xtensa: move headers files to arch/xtensa/include

Move all header files for xtensa to arch/xtensa/include and platform and
variant header files to the appropriate arch/xtensa/platforms/ and
arch/xtensa/variants/ directories.

Moving the files gets also rid of all uses of symlinks in the Makefile.

This has been completed already for the majority of the architectures
and xtensa is one out of six missing.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Chris Zankel <chris@zankel.net>

98 files changed, 8054 insertions, 0 deletions

diff --git a/arch/xtensa/include/asm/Kbuild b/arch/xtensa/include/asm/Kbuild
new file mode 100644
index 0000000..c68e168
--- /dev/null
+++ b/arch/xtensa/include/asm/Kbuild
@@ -0,0 +1 @@
+include include/asm-generic/Kbuild.asm
diff --git a/arch/xtensa/include/asm/asmmacro.h b/arch/xtensa/include/asm/asmmacro.h
new file mode 100644
index 0000000..755320f
--- /dev/null
+++ b/arch/xtensa/include/asm/asmmacro.h
@@ -0,0 +1,153 @@
+/*
+ * include/asm-xtensa/asmmacro.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ASMMACRO_H
+#define _XTENSA_ASMMACRO_H
+
+#include <variant/core.h>
+
+/*
+ * Some little helpers for loops. Use zero-overhead-loops
+ * where applicable and if supported by the processor.
+ *
+ * __loopi ar, at, size, inc
+ *         ar	register initialized with the start address
+ *	   at	scratch register used by macro
+ *	   size	size immediate value
+ *	   inc	increment
+ *
+ * __loops ar, as, at, inc_log2[, mask_log2][, cond][, ncond]
+ *	   ar	register initialized with the start address
+ *	   as	register initialized with the size
+ *	   at	scratch register use by macro
+ *	   inc_log2	increment [in log2]
+ *	   mask_log2	mask [in log2]
+ *	   cond		true condition (used in loop'cond')
+ *	   ncond	false condition (used in b'ncond')
+ *
+ * __loop  as
+ *	   restart loop. 'as' register must not have been modified!
+ *
+ * __endla ar, at, incr
+ *	   ar	start address (modified)
+ *	   as	scratch register used by macro
+ *	   inc	increment
+ */
+
+/*
+ * loop for given size as immediate
+ */
+
+	.macro	__loopi ar, at, size, incr
+
+#if XCHAL_HAVE_LOOPS
+		movi	\at, ((\size + \incr - 1) / (\incr))
+		loop	\at, 99f
+#else
+		addi	\at, \ar, \size
+		98:
+#endif
+
+	.endm
+
+/*
+ * loop for given size in register
+ */
+
+	.macro	__loops	ar, as, at, incr_log2, mask_log2, cond, ncond
+
+#if XCHAL_HAVE_LOOPS
+		.ifgt \incr_log2 - 1
+			addi	\at, \as, (1 << \incr_log2) - 1
+			.ifnc \mask_log2,
+				extui	\at, \at, \incr_log2, \mask_log2
+			.else
+				srli	\at, \at, \incr_log2
+			.endif
+		.endif
+		loop\cond	\at, 99f
+#else
+		.ifnc \mask_log2,
+			extui	\at, \as, \incr_log2, \mask_log2
+		.else
+			.ifnc \ncond,
+				srli	\at, \as, \incr_log2
+			.endif
+		.endif
+		.ifnc \ncond,
+			b\ncond	\at, 99f
+
+		.endif
+		.ifnc \mask_log2,
+			slli	\at, \at, \incr_log2
+			add	\at, \ar, \at
+		.else
+			add	\at, \ar, \as
+		.endif
+#endif
+		98:
+
+	.endm
+
+/*
+ * loop from ar to ax
+ */
+
+	.macro	__loopt	ar, as, at, incr_log2
+
+#if XCHAL_HAVE_LOOPS
+		sub	\at, \as, \ar
+		.ifgt	\incr_log2 - 1
+			addi	\at, \at, (1 << \incr_log2) - 1
+			srli	\at, \at, \incr_log2
+		.endif
+		loop	\at, 99f
+#else
+		98:
+#endif
+
+	.endm
+
+/*
+ * restart loop. registers must be unchanged
+ */
+
+	.macro	__loop	as
+
+#if XCHAL_HAVE_LOOPS
+		loop	\as, 99f
+#else
+		98:
+#endif
+
+	.endm
+
+/*
+ * end of loop with no increment of the address.
+ */
+
+	.macro	__endl	ar, as
+#if !XCHAL_HAVE_LOOPS
+		bltu	\ar, \as, 98b
+#endif
+		99:
+	.endm
+
+/*
+ * end of loop with increment of the address.
+ */
+
+	.macro	__endla	ar, as, incr
+		addi	\ar, \ar, \incr
+		__endl	\ar \as
+	.endm
+
+
+#endif /* _XTENSA_ASMMACRO_H */
diff --git a/arch/xtensa/include/asm/atomic.h b/arch/xtensa/include/asm/atomic.h
new file mode 100644
index 0000000..b3b2354
--- /dev/null
+++ b/arch/xtensa/include/asm/atomic.h
@@ -0,0 +1,300 @@
+/*
+ * include/asm-xtensa/atomic.h
+ *
+ * Atomic operations that C can't guarantee us.  Useful for resource counting..
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ATOMIC_H
+#define _XTENSA_ATOMIC_H
+
+#include <linux/stringify.h>
+
+typedef struct { volatile int counter; } atomic_t;
+
+#ifdef __KERNEL__
+#include <asm/processor.h>
+#include <asm/system.h>
+
+#define ATOMIC_INIT(i)	{ (i) }
+
+/*
+ * This Xtensa implementation assumes that the right mechanism
+ * for exclusion is for locking interrupts to level 1.
+ *
+ * Locking interrupts looks like this:
+ *
+ *    rsil a15, 1
+ *    <code>
+ *    wsr  a15, PS
+ *    rsync
+ *
+ * Note that a15 is used here because the register allocation
+ * done by the compiler is not guaranteed and a window overflow
+ * may not occur between the rsil and wsr instructions. By using
+ * a15 in the rsil, the machine is guaranteed to be in a state
+ * where no register reference will cause an overflow.
+ */
+
+/**
+ * atomic_read - read atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically reads the value of @v.
+ */
+#define atomic_read(v)		((v)->counter)
+
+/**
+ * atomic_set - set atomic variable
+ * @v: pointer of type atomic_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+#define atomic_set(v,i)		((v)->counter = (i))
+
+/**
+ * atomic_add - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic_add(int i, atomic_t * v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0              \n\t"
+	"add     %0, %0, %1             \n\t"
+	"s32i    %0, %2, 0              \n\t"
+	"wsr     a15, "__stringify(PS)"       \n\t"
+	"rsync                          \n"
+	: "=&a" (vval)
+	: "a" (i), "a" (v)
+	: "a15", "memory"
+	);
+}
+
+/**
+ * atomic_sub - subtract the atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic_sub(int i, atomic_t *v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0              \n\t"
+	"sub     %0, %0, %1             \n\t"
+	"s32i    %0, %2, 0              \n\t"
+	"wsr     a15, "__stringify(PS)"       \n\t"
+	"rsync                          \n"
+	: "=&a" (vval)
+	: "a" (i), "a" (v)
+	: "a15", "memory"
+	);
+}
+
+/*
+ * We use atomic_{add|sub}_return to define other functions.
+ */
+
+static inline int atomic_add_return(int i, atomic_t * v)
+{
+     unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0             \n\t"
+	"add     %0, %0, %1            \n\t"
+	"s32i    %0, %2, 0             \n\t"
+	"wsr     a15, "__stringify(PS)"      \n\t"
+	"rsync                         \n"
+	: "=&a" (vval)
+	: "a" (i), "a" (v)
+	: "a15", "memory"
+	);
+
+    return vval;
+}
+
+static inline int atomic_sub_return(int i, atomic_t * v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0             \n\t"
+	"sub     %0, %0, %1            \n\t"
+	"s32i    %0, %2, 0             \n\t"
+	"wsr     a15, "__stringify(PS)"       \n\t"
+	"rsync                         \n"
+	: "=&a" (vval)
+	: "a" (i), "a" (v)
+	: "a15", "memory"
+	);
+
+    return vval;
+}
+
+/**
+ * atomic_sub_and_test - subtract value from variable and test result
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_t
+ *
+ * Atomically subtracts @i from @v and returns
+ * true if the result is zero, or false for all
+ * other cases.
+ */
+#define atomic_sub_and_test(i,v) (atomic_sub_return((i),(v)) == 0)
+
+/**
+ * atomic_inc - increment atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1.
+ */
+#define atomic_inc(v) atomic_add(1,(v))
+
+/**
+ * atomic_inc - increment atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1.
+ */
+#define atomic_inc_return(v) atomic_add_return(1,(v))
+
+/**
+ * atomic_dec - decrement atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1.
+ */
+#define atomic_dec(v) atomic_sub(1,(v))
+
+/**
+ * atomic_dec_return - decrement atomic variable
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1.
+ */
+#define atomic_dec_return(v) atomic_sub_return(1,(v))
+
+/**
+ * atomic_dec_and_test - decrement and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically decrements @v by 1 and
+ * returns true if the result is 0, or false for all other
+ * cases.
+ */
+#define atomic_dec_and_test(v) (atomic_sub_return(1,(v)) == 0)
+
+/**
+ * atomic_inc_and_test - increment and test
+ * @v: pointer of type atomic_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+#define atomic_inc_and_test(v) (atomic_add_return(1,(v)) == 0)
+
+/**
+ * atomic_add_negative - add and test if negative
+ * @v: pointer of type atomic_t
+ * @i: integer value to add
+ *
+ * Atomically adds @i to @v and returns true
+ * if the result is negative, or false when
+ * result is greater than or equal to zero.
+ */
+#define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0)
+
+#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+/**
+ * atomic_add_unless - add unless the number is a given value
+ * @v: pointer of type atomic_t
+ * @a: the amount to add to v...
+ * @u: ...unless v is equal to u.
+ *
+ * Atomically adds @a to @v, so long as it was not @u.
+ * Returns non-zero if @v was not @u, and zero otherwise.
+ */
+static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+{
+	int c, old;
+	c = atomic_read(v);
+	for (;;) {
+		if (unlikely(c == (u)))
+			break;
+		old = atomic_cmpxchg((v), c, c + (a));
+		if (likely(old == c))
+			break;
+		c = old;
+	}
+	return c != (u);
+}
+
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+{
+    unsigned int all_f = -1;
+    unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0             \n\t"
+	"xor     %1, %4, %3            \n\t"
+	"and     %0, %0, %4            \n\t"
+	"s32i    %0, %2, 0             \n\t"
+	"wsr     a15, "__stringify(PS)"      \n\t"
+	"rsync                         \n"
+	: "=&a" (vval), "=a" (mask)
+	: "a" (v), "a" (all_f), "1" (mask)
+	: "a15", "memory"
+	);
+}
+
+static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
+{
+    unsigned int vval;
+
+    __asm__ __volatile__(
+	"rsil    a15,"__stringify(LOCKLEVEL)"\n\t"
+	"l32i    %0, %2, 0             \n\t"
+	"or      %0, %0, %1            \n\t"
+	"s32i    %0, %2, 0             \n\t"
+	"wsr     a15, "__stringify(PS)"       \n\t"
+	"rsync                         \n"
+	: "=&a" (vval)
+	: "a" (mask), "a" (v)
+	: "a15", "memory"
+	);
+}
+
+/* Atomic operations are already serializing */
+#define smp_mb__before_atomic_dec()	barrier()
+#define smp_mb__after_atomic_dec()	barrier()
+#define smp_mb__before_atomic_inc()	barrier()
+#define smp_mb__after_atomic_inc()	barrier()
+
+#include <asm-generic/atomic.h>
+#endif /* __KERNEL__ */
+
+#endif /* _XTENSA_ATOMIC_H */
+
diff --git a/arch/xtensa/include/asm/auxvec.h b/arch/xtensa/include/asm/auxvec.h
new file mode 100644
index 0000000..257dec7
--- /dev/null
+++ b/arch/xtensa/include/asm/auxvec.h
@@ -0,0 +1,4 @@
+#ifndef __XTENSA_AUXVEC_H
+#define __XTENSA_AUXVEC_H
+
+#endif
diff --git a/arch/xtensa/include/asm/bitops.h b/arch/xtensa/include/asm/bitops.h
new file mode 100644
index 0000000..23261e8
--- /dev/null
+++ b/arch/xtensa/include/asm/bitops.h
@@ -0,0 +1,121 @@
+/*
+ * include/asm-xtensa/bitops.h
+ *
+ * Atomic operations that C can't guarantee us.Useful for resource counting etc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BITOPS_H
+#define _XTENSA_BITOPS_H
+
+#ifdef __KERNEL__
+
+#ifndef _LINUX_BITOPS_H
+#error only <linux/bitops.h> can be included directly
+#endif
+
+#include <asm/processor.h>
+#include <asm/byteorder.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_SMP
+# error SMP not supported on this architecture
+#endif
+
+#define smp_mb__before_clear_bit()	barrier()
+#define smp_mb__after_clear_bit()	barrier()
+
+#include <asm-generic/bitops/atomic.h>
+#include <asm-generic/bitops/non-atomic.h>
+
+#if XCHAL_HAVE_NSA
+
+static inline unsigned long __cntlz (unsigned long x)
+{
+	int lz;
+	asm ("nsau %0, %1" : "=r" (lz) : "r" (x));
+	return lz;
+}
+
+/*
+ * ffz: Find first zero in word. Undefined if no zero exists.
+ * bit 0 is the LSB of addr; bit 32 is the LSB of (addr+1).
+ */
+
+static inline int ffz(unsigned long x)
+{
+	return 31 - __cntlz(~x & -~x);
+}
+
+/*
+ * __ffs: Find first bit set in word. Return 0 for bit 0
+ */
+
+static inline int __ffs(unsigned long x)
+{
+	return 31 - __cntlz(x & -x);
+}
+
+/*
+ * ffs: Find first bit set in word. This is defined the same way as
+ * the libc and compiler builtin ffs routines, therefore
+ * differs in spirit from the above ffz (man ffs).
+ */
+
+static inline int ffs(unsigned long x)
+{
+	return 32 - __cntlz(x & -x);
+}
+
+/*
+ * fls: Find last (most-significant) bit set in word.
+ * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
+ */
+
+static inline int fls (unsigned int x)
+{
+	return 32 - __cntlz(x);
+}
+
+#else
+
+/* Use the generic implementation if we don't have the nsa/nsau instructions. */
+
+# include <asm-generic/bitops/ffs.h>
+# include <asm-generic/bitops/__ffs.h>
+# include <asm-generic/bitops/ffz.h>
+# include <asm-generic/bitops/fls.h>
+
+#endif
+
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ext2-non-atomic.h>
+
+#ifdef __XTENSA_EL__
+# define ext2_set_bit_atomic(lock,nr,addr)				\
+	test_and_set_bit((nr), (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)				\
+	test_and_clear_bit((nr), (unsigned long*)(addr))
+#elif defined(__XTENSA_EB__)
+# define ext2_set_bit_atomic(lock,nr,addr)				\
+	test_and_set_bit((nr) ^ 0x18, (unsigned long*)(addr))
+# define ext2_clear_bit_atomic(lock,nr,addr)				\
+	test_and_clear_bit((nr) ^ 0x18, (unsigned long*)(addr))
+#else
+# error processor byte order undefined!
+#endif
+
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/lock.h>
+#include <asm-generic/bitops/sched.h>
+#include <asm-generic/bitops/minix.h>
+
+#endif	/* __KERNEL__ */
+
+#endif	/* _XTENSA_BITOPS_H */
diff --git a/arch/xtensa/include/asm/bootparam.h b/arch/xtensa/include/asm/bootparam.h
new file mode 100644
index 0000000..9983f2c
--- /dev/null
+++ b/arch/xtensa/include/asm/bootparam.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-xtensa/bootparam.h
+ *
+ * Definition of the Linux/Xtensa boot parameter structure
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005  Tensilica Inc.
+ *
+ * (Concept borrowed from the 68K port)
+ */
+
+#ifndef _XTENSA_BOOTPARAM_H
+#define _XTENSA_BOOTPARAM_H
+
+#define BP_VERSION 0x0001
+
+#define BP_TAG_COMMAND_LINE	0x1001	/* command line (0-terminated string)*/
+#define BP_TAG_INITRD		0x1002	/* ramdisk addr and size (bp_meminfo) */
+#define BP_TAG_MEMORY		0x1003	/* memory addr and size (bp_meminfo) */
+#define BP_TAG_SERIAL_BAUSRATE	0x1004	/* baud rate of current console. */
+#define BP_TAG_SERIAL_PORT	0x1005	/* serial device of current console */
+
+#define BP_TAG_FIRST		0x7B0B  /* first tag with a version number */
+#define BP_TAG_LAST 		0x7E0B	/* last tag */
+
+#ifndef __ASSEMBLY__
+
+/* All records are aligned to 4 bytes */
+
+typedef struct bp_tag {
+  unsigned short id;		/* tag id */
+  unsigned short size;		/* size of this record excluding the structure*/
+  unsigned long data[0];	/* data */
+} bp_tag_t;
+
+typedef struct meminfo {
+  unsigned long type;
+  unsigned long start;
+  unsigned long end;
+} meminfo_t;
+
+#define SYSMEM_BANKS_MAX 5
+
+#define MEMORY_TYPE_CONVENTIONAL	0x1000
+#define MEMORY_TYPE_NONE		0x2000
+
+typedef struct sysmem_info {
+  int nr_banks;
+  meminfo_t bank[SYSMEM_BANKS_MAX];
+} sysmem_info_t;
+
+extern sysmem_info_t sysmem;
+
+#endif
+#endif
+
+
+
diff --git a/arch/xtensa/include/asm/bug.h b/arch/xtensa/include/asm/bug.h
new file mode 100644
index 0000000..3e52d72
--- /dev/null
+++ b/arch/xtensa/include/asm/bug.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/bug.h
+ *
+ * Macros to cause a 'bug' message.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BUG_H
+#define _XTENSA_BUG_H
+
+#include <asm-generic/bug.h>
+
+#endif	/* _XTENSA_BUG_H */
diff --git a/arch/xtensa/include/asm/bugs.h b/arch/xtensa/include/asm/bugs.h
new file mode 100644
index 0000000..69b29d1
--- /dev/null
+++ b/arch/xtensa/include/asm/bugs.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/bugs.h
+ *
+ * This is included by init/main.c to check for architecture-dependent bugs.
+ *
+ * Xtensa processors don't have any bugs.  :)
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ */
+
+#ifndef _XTENSA_BUGS_H
+#define _XTENSA_BUGS_H
+
+static void check_bugs(void) { }
+
+#endif /* _XTENSA_BUGS_H */
diff --git a/arch/xtensa/include/asm/byteorder.h b/arch/xtensa/include/asm/byteorder.h
new file mode 100644
index 0000000..07d10ad
--- /dev/null
+++ b/arch/xtensa/include/asm/byteorder.h
@@ -0,0 +1,80 @@
+/*
+ * include/asm-xtensa/byteorder.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_BYTEORDER_H
+#define _XTENSA_BYTEORDER_H
+
+#include <asm/types.h>
+#include <linux/compiler.h>
+
+#ifdef __XTENSA_EL__
+# define __LITTLE_ENDIAN
+#elif defined(__XTENSA_EB__)
+# define __BIG_ENDIAN
+#else
+# error processor byte order undefined!
+#endif
+
+#define __SWAB_64_THRU_32__
+
+static inline __attribute_const__ __u32 __arch_swab32(__u32 x)
+{
+    __u32 res;
+    /* instruction sequence from Xtensa ISA release 2/2000 */
+    __asm__("ssai     8           \n\t"
+	    "srli     %0, %1, 16  \n\t"
+	    "src      %0, %0, %1  \n\t"
+	    "src      %0, %0, %0  \n\t"
+	    "src      %0, %1, %0  \n"
+	    : "=&a" (res)
+	    : "a" (x)
+	    );
+    return res;
+}
+#define __arch_swab32 __arch_swab32
+
+static inline __attribute_const__ __u16 __arch_swab16(__u16 x)
+{
+    /* Given that 'short' values are signed (i.e., can be negative),
+     * we cannot assume that the upper 16-bits of the register are
+     * zero.  We are careful to mask values after shifting.
+     */
+
+    /* There exists an anomaly between xt-gcc and xt-xcc.  xt-gcc
+     * inserts an extui instruction after putting this function inline
+     * to ensure that it uses only the least-significant 16 bits of
+     * the result.  xt-xcc doesn't use an extui, but assumes the
+     * __asm__ macro follows convention that the upper 16 bits of an
+     * 'unsigned short' result are still zero.  This macro doesn't
+     * follow convention; indeed, it leaves garbage in the upport 16
+     * bits of the register.
+
+     * Declaring the temporary variables 'res' and 'tmp' to be 32-bit
+     * types while the return type of the function is a 16-bit type
+     * forces both compilers to insert exactly one extui instruction
+     * (or equivalent) to mask off the upper 16 bits. */
+
+    __u32 res;
+    __u32 tmp;
+
+    __asm__("extui    %1, %2, 8, 8\n\t"
+	    "slli     %0, %2, 8   \n\t"
+	    "or       %0, %0, %1  \n"
+	    : "=&a" (res), "=&a" (tmp)
+	    : "a" (x)
+	    );
+
+    return res;
+}
+#define __arch_swab16 __arch_swab16
+
+#include <linux/byteorder.h>
+
+#endif /* _XTENSA_BYTEORDER_H */
diff --git a/arch/xtensa/include/asm/cache.h b/arch/xtensa/include/asm/cache.h
new file mode 100644
index 0000000..f04c989
--- /dev/null
+++ b/arch/xtensa/include/asm/cache.h
@@ -0,0 +1,33 @@
+/*
+ * include/asm-xtensa/cache.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CACHE_H
+#define _XTENSA_CACHE_H
+
+#include <variant/core.h>
+
+#define L1_CACHE_SHIFT	XCHAL_DCACHE_LINEWIDTH
+#define L1_CACHE_BYTES	XCHAL_DCACHE_LINESIZE
+#define SMP_CACHE_BYTES	L1_CACHE_BYTES
+
+#define DCACHE_WAY_SIZE	(XCHAL_DCACHE_SIZE/XCHAL_DCACHE_WAYS)
+#define ICACHE_WAY_SIZE	(XCHAL_ICACHE_SIZE/XCHAL_ICACHE_WAYS)
+#define DCACHE_WAY_SHIFT (XCHAL_DCACHE_SETWIDTH + XCHAL_DCACHE_LINEWIDTH)
+#define ICACHE_WAY_SHIFT (XCHAL_ICACHE_SETWIDTH + XCHAL_ICACHE_LINEWIDTH)
+
+/* Maximum cache size per way. */
+#if DCACHE_WAY_SIZE >= ICACHE_WAY_SIZE
+# define CACHE_WAY_SIZE DCACHE_WAY_SIZE
+#else
+# define CACHE_WAY_SIZE ICACHE_WAY_SIZE
+#endif
+
+
+#endif	/* _XTENSA_CACHE_H */
diff --git a/arch/xtensa/include/asm/cacheasm.h b/arch/xtensa/include/asm/cacheasm.h
new file mode 100644
index 0000000..2c20a58
--- /dev/null
+++ b/arch/xtensa/include/asm/cacheasm.h
@@ -0,0 +1,177 @@
+/*
+ * include/asm-xtensa/cacheasm.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006 Tensilica Inc.
+ */
+
+#include <asm/cache.h>
+#include <asm/asmmacro.h>
+#include <linux/stringify.h>
+
+/*
+ * Define cache functions as macros here so that they can be used
+ * by the kernel and boot loader. We should consider moving them to a
+ * library that can be linked by both.
+ *
+ * Locking
+ *
+ *   ___unlock_dcache_all
+ *   ___unlock_icache_all
+ *
+ * Flush and invaldating
+ *
+ *   ___flush_invalidate_dcache_{all|range|page}
+ *   ___flush_dcache_{all|range|page}
+ *   ___invalidate_dcache_{all|range|page}
+ *   ___invalidate_icache_{all|range|page}
+ *
+ */
+
+	.macro	__loop_cache_all ar at insn size line_width
+
+	movi	\ar, 0
+
+	__loopi	\ar, \at, \size, (4 << (\line_width))
+	\insn	\ar, 0 << (\line_width)
+	\insn	\ar, 1 << (\line_width)
+	\insn	\ar, 2 << (\line_width)
+	\insn	\ar, 3 << (\line_width)
+	__endla	\ar, \at, 4 << (\line_width)
+
+	.endm
+
+
+	.macro	__loop_cache_range ar as at insn line_width
+
+	extui	\at, \ar, 0, \line_width
+	add	\as, \as, \at
+
+	__loops	\ar, \as, \at, \line_width
+	\insn	\ar, 0
+	__endla	\ar, \at, (1 << (\line_width))
+
+	.endm
+
+
+	.macro	__loop_cache_page ar at insn line_width
+
+	__loopi	\ar, \at, PAGE_SIZE, 4 << (\line_width)
+	\insn	\ar, 0 << (\line_width)
+	\insn	\ar, 1 << (\line_width)
+	\insn	\ar, 2 << (\line_width)
+	\insn	\ar, 3 << (\line_width)
+	__endla	\ar, \at, 4 << (\line_width)
+
+	.endm
+
+
+#if XCHAL_DCACHE_LINE_LOCKABLE
+
+	.macro	___unlock_dcache_all ar at
+
+	__loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+#endif
+
+#if XCHAL_ICACHE_LINE_LOCKABLE
+
+	.macro	___unlock_icache_all ar at
+
+	__loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE XCHAL_ICACHE_LINEWIDTH
+
+	.endm
+#endif
+
+	.macro	___flush_invalidate_dcache_all ar at
+
+	__loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___flush_dcache_all ar at
+
+	__loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_dcache_all ar at
+
+	__loop_cache_all \ar \at dii __stringify(DCACHE_WAY_SIZE) \
+			 XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_icache_all ar at
+
+	__loop_cache_all \ar \at iii __stringify(ICACHE_WAY_SIZE) \
+			 XCHAL_ICACHE_LINEWIDTH
+
+	.endm
+
+
+
+	.macro	___flush_invalidate_dcache_range ar as at
+
+	__loop_cache_range \ar \as \at dhwbi XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___flush_dcache_range ar as at
+
+	__loop_cache_range \ar \as \at dhwb XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_dcache_range ar as at
+
+	__loop_cache_range \ar \as \at dhi XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_icache_range ar as at
+
+	__loop_cache_range \ar \as \at ihi XCHAL_ICACHE_LINEWIDTH
+
+	.endm
+
+
+
+	.macro	___flush_invalidate_dcache_page ar as
+
+	__loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro ___flush_dcache_page ar as
+
+	__loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_dcache_page ar as
+
+	__loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH
+
+	.endm
+
+
+	.macro	___invalidate_icache_page ar as
+
+	__loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH
+
+	.endm
+
diff --git a/arch/xtensa/include/asm/cacheflush.h b/arch/xtensa/include/asm/cacheflush.h
new file mode 100644
index 0000000..94c4c53
--- /dev/null
+++ b/arch/xtensa/include/asm/cacheflush.h
@@ -0,0 +1,155 @@
+/*
+ * include/asm-xtensa/cacheflush.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CACHEFLUSH_H
+#define _XTENSA_CACHEFLUSH_H
+
+#ifdef __KERNEL__
+
+#include <linux/mm.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+
+/*
+ * Lo-level routines for cache flushing.
+ *
+ * invalidate data or instruction cache:
+ *
+ * __invalidate_icache_all()
+ * __invalidate_icache_page(adr)
+ * __invalidate_dcache_page(adr)
+ * __invalidate_icache_range(from,size)
+ * __invalidate_dcache_range(from,size)
+ *
+ * flush data cache:
+ *
+ * __flush_dcache_page(adr)
+ *
+ * flush and invalidate data cache:
+ *
+ * __flush_invalidate_dcache_all()
+ * __flush_invalidate_dcache_page(adr)
+ * __flush_invalidate_dcache_range(from,size)
+ *
+ * specials for cache aliasing:
+ *
+ * __flush_invalidate_dcache_page_alias(vaddr,paddr)
+ * __invalidate_icache_page_alias(vaddr,paddr)
+ */
+
+extern void __invalidate_dcache_all(void);
+extern void __invalidate_icache_all(void);
+extern void __invalidate_dcache_page(unsigned long);
+extern void __invalidate_icache_page(unsigned long);
+extern void __invalidate_icache_range(unsigned long, unsigned long);
+extern void __invalidate_dcache_range(unsigned long, unsigned long);
+
+
+#if XCHAL_DCACHE_IS_WRITEBACK
+extern void __flush_invalidate_dcache_all(void);
+extern void __flush_dcache_page(unsigned long);
+extern void __flush_dcache_range(unsigned long, unsigned long);
+extern void __flush_invalidate_dcache_page(unsigned long);
+extern void __flush_invalidate_dcache_range(unsigned long, unsigned long);
+#else
+# define __flush_dcache_range(p,s)		do { } while(0)
+# define __flush_dcache_page(p)			do { } while(0)
+# define __flush_invalidate_dcache_page(p) 	__invalidate_dcache_page(p)
+# define __flush_invalidate_dcache_range(p,s)	__invalidate_dcache_range(p,s)
+#endif
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+extern void __flush_invalidate_dcache_page_alias(unsigned long, unsigned long);
+#endif
+#if (ICACHE_WAY_SIZE > PAGE_SIZE)
+extern void __invalidate_icache_page_alias(unsigned long, unsigned long);
+#else
+# define __invalidate_icache_page_alias(v,p)	do { } while(0)
+#endif
+
+/*
+ * We have physically tagged caches - nothing to do here -
+ * unless we have cache aliasing.
+ *
+ * Pages can get remapped. Because this might change the 'color' of that page,
+ * we have to flush the cache before the PTE is changed.
+ * (see also Documentation/cachetlb.txt)
+ */
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+
+#define flush_cache_all()						\
+	do {								\
+		__flush_invalidate_dcache_all();			\
+		__invalidate_icache_all();				\
+	} while (0)
+
+#define flush_cache_mm(mm)		flush_cache_all()
+#define flush_cache_dup_mm(mm)		flush_cache_mm(mm)
+
+#define flush_cache_vmap(start,end)	flush_cache_all()
+#define flush_cache_vunmap(start,end)	flush_cache_all()
+
+extern void flush_dcache_page(struct page*);
+extern void flush_cache_range(struct vm_area_struct*, ulong, ulong);
+extern void flush_cache_page(struct vm_area_struct*, unsigned long, unsigned long);
+
+#else
+
+#define flush_cache_all()				do { } while (0)
+#define flush_cache_mm(mm)				do { } while (0)
+#define flush_cache_dup_mm(mm)				do { } while (0)
+
+#define flush_cache_vmap(start,end)			do { } while (0)
+#define flush_cache_vunmap(start,end)			do { } while (0)
+
+#define flush_dcache_page(page)				do { } while (0)
+
+#define flush_cache_page(vma,addr,pfn)			do { } while (0)
+#define flush_cache_range(vma,start,end)		do { } while (0)
+
+#endif
+
+/* Ensure consistency between data and instruction cache. */
+#define flush_icache_range(start,end) 					\
+	do {								\
+		__flush_dcache_range(start, (end) - (start));		\
+		__invalidate_icache_range(start,(end) - (start));	\
+	} while (0)
+
+/* This is not required, see Documentation/cachetlb.txt */
+#define	flush_icache_page(vma,page)			do { } while (0)
+
+#define flush_dcache_mmap_lock(mapping)			do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)		do { } while (0)
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+
+extern void copy_to_user_page(struct vm_area_struct*, struct page*,
+		unsigned long, void*, const void*, unsigned long);
+extern void copy_from_user_page(struct vm_area_struct*, struct page*,
+		unsigned long, void*, const void*, unsigned long);
+
+#else
+
+#define copy_to_user_page(vma, page, vaddr, dst, src, len)		\
+	do {								\
+		memcpy(dst, src, len);					\
+		__flush_dcache_range((unsigned long) dst, len);		\
+		__invalidate_icache_range((unsigned long) dst, len);	\
+	} while (0)
+
+#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
+	memcpy(dst, src, len)
+
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _XTENSA_CACHEFLUSH_H */
diff --git a/arch/xtensa/include/asm/checksum.h b/arch/xtensa/include/asm/checksum.h
new file mode 100644
index 0000000..f84d3f0
--- /dev/null
+++ b/arch/xtensa/include/asm/checksum.h
@@ -0,0 +1,250 @@
+/*
+ * include/asm-xtensa/checksum.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CHECKSUM_H
+#define _XTENSA_CHECKSUM_H
+
+#include <linux/in6.h>
+#include <variant/core.h>
+
+/*
+ * computes the checksum of a memory block at buff, length len,
+ * and adds in "sum" (32-bit)
+ *
+ * returns a 32-bit number suitable for feeding into itself
+ * or csum_tcpudp_magic
+ *
+ * this function must be called with even lengths, except
+ * for the last fragment, which may be odd
+ *
+ * it's best to have buff aligned on a 32-bit boundary
+ */
+asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
+
+/*
+ * the same as csum_partial, but copies from src while it
+ * checksums, and handles user-space pointer exceptions correctly, when needed.
+ *
+ * here even more important to align src and dst on a 32-bit (or even
+ * better 64-bit) boundary
+ */
+
+asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst, int len, __wsum sum,
+						   int *src_err_ptr, int *dst_err_ptr);
+
+/*
+ *	Note: when you get a NULL pointer exception here this means someone
+ *	passed in an incorrect kernel address to one of these functions.
+ *
+ *	If you use these functions directly please don't forget the access_ok().
+ */
+static inline
+__wsum csum_partial_copy_nocheck(const void *src, void *dst,
+					int len, __wsum sum)
+{
+	return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
+}
+
+static inline
+__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+						int len, __wsum sum, int *err_ptr)
+{
+	return csum_partial_copy_generic((__force const void *)src, dst,
+					len, sum, err_ptr, NULL);
+}
+
+/*
+ *	Fold a partial checksum
+ */
+
+static __inline__ __sum16 csum_fold(__wsum sum)
+{
+	unsigned int __dummy;
+	__asm__("extui	%1, %0, 16, 16\n\t"
+		"extui	%0 ,%0, 0, 16\n\t"
+		"add	%0, %0, %1\n\t"
+		"slli	%1, %0, 16\n\t"
+		"add	%0, %0, %1\n\t"
+		"extui	%0, %0, 16, 16\n\t"
+		"neg	%0, %0\n\t"
+		"addi	%0, %0, -1\n\t"
+		"extui	%0, %0, 0, 16\n\t"
+		: "=r" (sum), "=&r" (__dummy)
+		: "0" (sum));
+	return (__force __sum16)sum;
+}
+
+/*
+ *	This is a version of ip_compute_csum() optimized for IP headers,
+ *	which always checksum on 4 octet boundaries.
+ */
+static __inline__ __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+	unsigned int sum, tmp, endaddr;
+
+	__asm__ __volatile__(
+		"sub		%0, %0, %0\n\t"
+#if XCHAL_HAVE_LOOPS
+		"loopgtz	%2, 2f\n\t"
+#else
+		"beqz		%2, 2f\n\t"
+		"slli		%4, %2, 2\n\t"
+		"add		%4, %4, %1\n\t"
+		"0:\t"
+#endif
+		"l32i		%3, %1, 0\n\t"
+		"add		%0, %0, %3\n\t"
+		"bgeu		%0, %3, 1f\n\t"
+		"addi		%0, %0, 1\n\t"
+		"1:\t"
+		"addi		%1, %1, 4\n\t"
+#if !XCHAL_HAVE_LOOPS
+		"blt		%1, %4, 0b\n\t"
+#endif
+		"2:\t"
+	/* Since the input registers which are loaded with iph and ihl
+	   are modified, we must also specify them as outputs, or gcc
+	   will assume they contain their original values. */
+		: "=r" (sum), "=r" (iph), "=r" (ihl), "=&r" (tmp), "=&r" (endaddr)
+		: "1" (iph), "2" (ihl));
+
+	return	csum_fold(sum);
+}
+
+static __inline__ __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
+						   unsigned short len,
+						   unsigned short proto,
+						   __wsum sum)
+{
+
+#ifdef __XTENSA_EL__
+	unsigned long len_proto = (len + proto) << 8;
+#elif defined(__XTENSA_EB__)
+	unsigned long len_proto = len + proto;
+#else
+# error processor byte order undefined!
+#endif
+	__asm__("add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"add	%0, %0, %2\n\t"
+		"bgeu	%0, %2, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"add	%0, %0, %3\n\t"
+		"bgeu	%0, %3, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		: "=r" (sum), "=r" (len_proto)
+		: "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum));
+	return sum;
+}
+
+/*
+ * computes the checksum of the TCP/UDP pseudo-header
+ * returns a 16-bit checksum, already complemented
+ */
+static __inline__ __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
+						       unsigned short len,
+						       unsigned short proto,
+						       __wsum sum)
+{
+	return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
+}
+
+/*
+ * this routine is used for miscellaneous IP-like checksums, mainly
+ * in icmp.c
+ */
+
+static __inline__ __sum16 ip_compute_csum(const void *buff, int len)
+{
+    return csum_fold (csum_partial(buff, len, 0));
+}
+
+#define _HAVE_ARCH_IPV6_CSUM
+static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+					  const struct in6_addr *daddr,
+					  __u32 len, unsigned short proto,
+					  __wsum sum)
+{
+	unsigned int __dummy;
+	__asm__("l32i	%1, %2, 0\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %2, 4\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %2, 8\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %2, 12\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %3, 0\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %3, 4\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %3, 8\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"l32i	%1, %3, 12\n\t"
+		"add	%0, %0, %1\n\t"
+		"bgeu	%0, %1, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"add	%0, %0, %4\n\t"
+		"bgeu	%0, %4, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		"add	%0, %0, %5\n\t"
+		"bgeu	%0, %5, 1f\n\t"
+		"addi	%0, %0, 1\n\t"
+		"1:\t"
+		: "=r" (sum), "=&r" (__dummy)
+		: "r" (saddr), "r" (daddr),
+		  "r" (htonl(len)), "r" (htonl(proto)), "0" (sum));
+
+	return csum_fold(sum);
+}
+
+/*
+ *	Copy and checksum to user
+ */
+#define HAVE_CSUM_COPY_USER
+static __inline__ __wsum csum_and_copy_to_user(const void *src, void __user *dst,
+				    int len, __wsum sum, int *err_ptr)
+{
+	if (access_ok(VERIFY_WRITE, dst, len))
+		return csum_partial_copy_generic(src, dst, len, sum, NULL, err_ptr);
+
+	if (len)
+		*err_ptr = -EFAULT;
+
+	return (__force __wsum)-1; /* invalid checksum */
+}
+#endif
diff --git a/arch/xtensa/include/asm/coprocessor.h b/arch/xtensa/include/asm/coprocessor.h
new file mode 100644
index 0000000..65a285d
--- /dev/null
+++ b/arch/xtensa/include/asm/coprocessor.h
@@ -0,0 +1,177 @@
+/*
+ * include/asm-xtensa/coprocessor.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 - 2007 Tensilica Inc.
+ */
+
+
+#ifndef _XTENSA_COPROCESSOR_H
+#define _XTENSA_COPROCESSOR_H
+
+#include <linux/stringify.h>
+#include <variant/tie.h>
+#include <asm/types.h>
+
+#ifdef __ASSEMBLY__
+# include <variant/tie-asm.h>
+
+.macro	xchal_sa_start  a b
+	.set .Lxchal_pofs_, 0
+	.set .Lxchal_ofs_, 0
+.endm
+
+.macro	xchal_sa_align  ptr minofs maxofs ofsalign totalign
+	.set	.Lxchal_ofs_, .Lxchal_ofs_ + .Lxchal_pofs_ + \totalign - 1
+	.set	.Lxchal_ofs_, (.Lxchal_ofs_ & -\totalign) - .Lxchal_pofs_
+.endm
+
+#define _SELECT	(  XTHAL_SAS_TIE | XTHAL_SAS_OPT \
+		 | XTHAL_SAS_CC \
+		 | XTHAL_SAS_CALR | XTHAL_SAS_CALE )
+
+.macro save_xtregs_opt ptr clb at1 at2 at3 at4 offset
+	.if XTREGS_OPT_SIZE > 0
+		addi	\clb, \ptr, \offset
+		xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
+	.endif
+.endm
+
+.macro load_xtregs_opt ptr clb at1 at2 at3 at4 offset
+	.if XTREGS_OPT_SIZE > 0
+		addi	\clb, \ptr, \offset
+		xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
+	.endif
+.endm
+#undef _SELECT
+
+#define _SELECT	(  XTHAL_SAS_TIE | XTHAL_SAS_OPT \
+		 | XTHAL_SAS_NOCC \
+		 | XTHAL_SAS_CALR | XTHAL_SAS_CALE | XTHAL_SAS_GLOB )
+
+.macro save_xtregs_user ptr clb at1 at2 at3 at4 offset
+	.if XTREGS_USER_SIZE > 0
+		addi	\clb, \ptr, \offset
+		xchal_ncp_store \clb \at1 \at2 \at3 \at4 select=_SELECT
+	.endif
+.endm
+
+.macro load_xtregs_user ptr clb at1 at2 at3 at4 offset
+	.if XTREGS_USER_SIZE > 0
+		addi	\clb, \ptr, \offset
+		xchal_ncp_load \clb \at1 \at2 \at3 \at4 select=_SELECT
+	.endif
+.endm
+#undef _SELECT
+
+
+
+#endif	/* __ASSEMBLY__ */
+
+/*
+ * XTENSA_HAVE_COPROCESSOR(x) returns 1 if coprocessor x is configured.
+ *
+ * XTENSA_HAVE_IO_PORT(x) returns 1 if io-port x is configured.
+ *
+ */
+
+#define XTENSA_HAVE_COPROCESSOR(x)					\
+	((XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK) & (1 << (x)))
+#define XTENSA_HAVE_COPROCESSORS					\
+	(XCHAL_CP_MASK ^ XCHAL_CP_PORT_MASK)
+#define XTENSA_HAVE_IO_PORT(x)						\
+	(XCHAL_CP_PORT_MASK & (1 << (x)))
+#define XTENSA_HAVE_IO_PORTS						\
+	XCHAL_CP_PORT_MASK
+
+#ifndef __ASSEMBLY__
+
+
+#if XCHAL_HAVE_CP
+
+#define RSR_CPENABLE(x)	do {						  \
+	__asm__ __volatile__("rsr %0," __stringify(CPENABLE) : "=a" (x)); \
+	} while(0);
+#define WSR_CPENABLE(x)	do {						  \
+  	__asm__ __volatile__("wsr %0," __stringify(CPENABLE) "; rsync" 	  \
+	    		     :: "a" (x));				  \
+	} while(0);
+
+#endif /* XCHAL_HAVE_CP */
+
+
+/*
+ * Additional registers.
+ * We define three types of additional registers:
+ *  ext: extra registers that are used by the compiler
+ *  cpn: optional registers that can be used by a user application
+ *  cpX: coprocessor registers that can only be used if the corresponding
+ *       CPENABLE bit is set.
+ */
+
+#define XCHAL_SA_REG(list,cc,abi,type,y,name,z,align,size,...)	\
+	__REG ## list (cc, abi, type, name, size, align)
+
+#define __REG0(cc,abi,t,name,s,a)	__REG0_ ## cc (abi,name)
+#define __REG1(cc,abi,t,name,s,a)	__REG1_ ## cc (name)
+#define __REG2(cc,abi,type,...)		__REG2_ ## type (__VA_ARGS__)
+
+#define __REG0_0(abi,name)
+#define __REG0_1(abi,name)		__REG0_1 ## abi (name)
+#define __REG0_10(name)	__u32 name;
+#define __REG0_11(name)	__u32 name;
+#define __REG0_12(name)
+
+#define __REG1_0(name)	__u32 name;
+#define __REG1_1(name)
+
+#define __REG2_0(n,s,a)	__u32 name;
+#define __REG2_1(n,s,a)	unsigned char n[s] __attribute__ ((aligned(a)));
+#define __REG2_2(n,s,a) unsigned char n[s] __attribute__ ((aligned(a)));
+
+typedef struct { XCHAL_NCP_SA_LIST(0) } xtregs_opt_t
+	__attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
+typedef struct { XCHAL_NCP_SA_LIST(1) } xtregs_user_t
+	__attribute__ ((aligned (XCHAL_NCP_SA_ALIGN)));
+
+#if XTENSA_HAVE_COPROCESSORS
+
+typedef struct { XCHAL_CP0_SA_LIST(2) } xtregs_cp0_t
+	__attribute__ ((aligned (XCHAL_CP0_SA_ALIGN)));
+typedef struct { XCHAL_CP1_SA_LIST(2) } xtregs_cp1_t
+	__attribute__ ((aligned (XCHAL_CP1_SA_ALIGN)));
+typedef struct { XCHAL_CP2_SA_LIST(2) } xtregs_cp2_t
+	__attribute__ ((aligned (XCHAL_CP2_SA_ALIGN)));
+typedef struct { XCHAL_CP3_SA_LIST(2) } xtregs_cp3_t
+	__attribute__ ((aligned (XCHAL_CP3_SA_ALIGN)));
+typedef struct { XCHAL_CP4_SA_LIST(2) } xtregs_cp4_t
+	__attribute__ ((aligned (XCHAL_CP4_SA_ALIGN)));
+typedef struct { XCHAL_CP5_SA_LIST(2) } xtregs_cp5_t
+	__attribute__ ((aligned (XCHAL_CP5_SA_ALIGN)));
+typedef struct { XCHAL_CP6_SA_LIST(2) } xtregs_cp6_t
+	__attribute__ ((aligned (XCHAL_CP6_SA_ALIGN)));
+typedef struct { XCHAL_CP7_SA_LIST(2) } xtregs_cp7_t
+	__attribute__ ((aligned (XCHAL_CP7_SA_ALIGN)));
+
+extern struct thread_info* coprocessor_owner[XCHAL_CP_MAX];
+extern void coprocessor_save(void*, int);
+extern void coprocessor_load(void*, int);
+extern void coprocessor_flush(struct thread_info*, int);
+extern void coprocessor_restore(struct thread_info*, int);
+
+extern void coprocessor_release_all(struct thread_info*);
+extern void coprocessor_flush_all(struct thread_info*);
+
+static inline void coprocessor_clear_cpenable(void)
+{
+	unsigned long i = 0;
+	WSR_CPENABLE(i);
+}
+
+#endif	/* XTENSA_HAVE_COPROCESSORS */
+
+#endif	/* !__ASSEMBLY__ */
+#endif	/* _XTENSA_COPROCESSOR_H */
diff --git a/arch/xtensa/include/asm/cpumask.h b/arch/xtensa/include/asm/cpumask.h
new file mode 100644
index 0000000..ebeede3
--- /dev/null
+++ b/arch/xtensa/include/asm/cpumask.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/cpumask.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CPUMASK_H
+#define _XTENSA_CPUMASK_H
+
+#include <asm-generic/cpumask.h>
+
+#endif /* _XTENSA_CPUMASK_H */
diff --git a/arch/xtensa/include/asm/cputime.h b/arch/xtensa/include/asm/cputime.h
new file mode 100644
index 0000000..a7fb864
--- /dev/null
+++ b/arch/xtensa/include/asm/cputime.h
@@ -0,0 +1,6 @@
+#ifndef _XTENSA_CPUTIME_H
+#define _XTENSA_CPUTIME_H
+
+#include <asm-generic/cputime.h>
+
+#endif /* _XTENSA_CPUTIME_H */
diff --git a/arch/xtensa/include/asm/current.h b/arch/xtensa/include/asm/current.h
new file mode 100644
index 0000000..8d1eb5d
--- /dev/null
+++ b/arch/xtensa/include/asm/current.h
@@ -0,0 +1,38 @@
+/*
+ * include/asm-xtensa/current.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CURRENT_H
+#define _XTENSA_CURRENT_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/thread_info.h>
+
+struct task_struct;
+
+static inline struct task_struct *get_current(void)
+{
+	return current_thread_info()->task;
+}
+
+#define current get_current()
+
+#else
+
+#define CURRENT_SHIFT 13
+
+#define GET_CURRENT(reg,sp)		\
+	GET_THREAD_INFO(reg,sp);	\
+  	l32i reg, reg, TI_TASK		\
+
+#endif
+
+
+#endif /* XTENSA_CURRENT_H */
diff --git a/arch/xtensa/include/asm/delay.h b/arch/xtensa/include/asm/delay.h
new file mode 100644
index 0000000..e1d8c9e
--- /dev/null
+++ b/arch/xtensa/include/asm/delay.h
@@ -0,0 +1,49 @@
+/*
+ * include/asm-xtensa/delay.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ *
+ */
+
+#ifndef _XTENSA_DELAY_H
+#define _XTENSA_DELAY_H
+
+#include <asm/processor.h>
+#include <asm/param.h>
+
+extern unsigned long loops_per_jiffy;
+
+static inline void __delay(unsigned long loops)
+{
+  /* 2 cycles per loop. */
+  __asm__ __volatile__ ("1: addi %0, %0, -2; bgeui %0, 2, 1b"
+			: "=r" (loops) : "0" (loops));
+}
+
+static __inline__ u32 xtensa_get_ccount(void)
+{
+	u32 ccount;
+	asm volatile ("rsr %0, 234; # CCOUNT\n" : "=r" (ccount));
+	return ccount;
+}
+
+/* For SMP/NUMA systems, change boot_cpu_data to something like
+ * local_cpu_data->... where local_cpu_data points to the current
+ * cpu. */
+
+static __inline__ void udelay (unsigned long usecs)
+{
+	unsigned long start = xtensa_get_ccount();
+	unsigned long cycles = usecs * (loops_per_jiffy / (1000000UL / HZ));
+
+	/* Note: all variables are unsigned (can wrap around)! */
+	while (((unsigned long)xtensa_get_ccount()) - start < cycles)
+		;
+}
+
+#endif
+
diff --git a/arch/xtensa/include/asm/device.h b/arch/xtensa/include/asm/device.h
new file mode 100644
index 0000000..d8f9872
--- /dev/null
+++ b/arch/xtensa/include/asm/device.h
@@ -0,0 +1,7 @@
+/*
+ * Arch specific extensions to struct device
+ *
+ * This file is released under the GPLv2
+ */
+#include <asm-generic/device.h>
+
diff --git a/arch/xtensa/include/asm/div64.h b/arch/xtensa/include/asm/div64.h
new file mode 100644
index 0000000..f35678c
--- /dev/null
+++ b/arch/xtensa/include/asm/div64.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/div64.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DIV64_H
+#define _XTENSA_DIV64_H
+
+#include <asm-generic/div64.h>
+
+#endif /* _XTENSA_DIV64_H */
diff --git a/arch/xtensa/include/asm/dma-mapping.h b/arch/xtensa/include/asm/dma-mapping.h
new file mode 100644
index 0000000..51882ae
--- /dev/null
+++ b/arch/xtensa/include/asm/dma-mapping.h
@@ -0,0 +1,179 @@
+/*
+ * include/asm-xtensa/dma-mapping.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DMA_MAPPING_H
+#define _XTENSA_DMA_MAPPING_H
+
+#include <asm/cache.h>
+#include <asm/io.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+
+/*
+ * DMA-consistent mapping functions.
+ */
+
+extern void *consistent_alloc(int, size_t, dma_addr_t, unsigned long);
+extern void consistent_free(void*, size_t, dma_addr_t);
+extern void consistent_sync(void*, size_t, int);
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+void *dma_alloc_coherent(struct device *dev, size_t size,
+			   dma_addr_t *dma_handle, gfp_t flag);
+
+void dma_free_coherent(struct device *dev, size_t size,
+			 void *vaddr, dma_addr_t dma_handle);
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *ptr, size_t size,
+	       enum dma_data_direction direction)
+{
+	BUG_ON(direction == DMA_NONE);
+	consistent_sync(ptr, size, direction);
+	return virt_to_phys(ptr);
+}
+
+static inline void
+dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
+		 enum dma_data_direction direction)
+{
+	BUG_ON(direction == DMA_NONE);
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+	   enum dma_data_direction direction)
+{
+	int i;
+
+	BUG_ON(direction == DMA_NONE);
+
+	for (i = 0; i < nents; i++, sg++ ) {
+		BUG_ON(!sg_page(sg));
+
+		sg->dma_address = sg_phys(sg);
+		consistent_sync(sg_virt(sg), sg->length, direction);
+	}
+
+	return nents;
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page, unsigned long offset,
+	     size_t size, enum dma_data_direction direction)
+{
+	BUG_ON(direction == DMA_NONE);
+	return (dma_addr_t)(page_to_pfn(page)) * PAGE_SIZE + offset;
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+	       enum dma_data_direction direction)
+{
+	BUG_ON(direction == DMA_NONE);
+}
+
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+	     enum dma_data_direction direction)
+{
+	BUG_ON(direction == DMA_NONE);
+}
+
+static inline void
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+		enum dma_data_direction direction)
+{
+	consistent_sync((void *)bus_to_virt(dma_handle), size, direction);
+}
+
+static inline void
+dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size,
+		enum dma_data_direction direction)
+{
+	consistent_sync((void *)bus_to_virt(dma_handle), size, direction);
+}
+
+static inline void
+dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
+		      unsigned long offset, size_t size,
+		      enum dma_data_direction direction)
+{
+
+	consistent_sync((void *)bus_to_virt(dma_handle)+offset,size,direction);
+}
+
+static inline void
+dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
+		      unsigned long offset, size_t size,
+		      enum dma_data_direction direction)
+{
+
+	consistent_sync((void *)bus_to_virt(dma_handle)+offset,size,direction);
+}
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+		 enum dma_data_direction dir)
+{
+	int i;
+	for (i = 0; i < nelems; i++, sg++)
+		consistent_sync(sg_virt(sg), sg->length, dir);
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
+		 enum dma_data_direction dir)
+{
+	int i;
+	for (i = 0; i < nelems; i++, sg++)
+		consistent_sync(sg_virt(sg), sg->length, dir);
+}
+static inline int
+dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+	return 0;
+}
+
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+	return 1;
+}
+
+static inline int
+dma_set_mask(struct device *dev, u64 mask)
+{
+	if(!dev->dma_mask || !dma_supported(dev, mask))
+		return -EIO;
+
+	*dev->dma_mask = mask;
+
+	return 0;
+}
+
+static inline int
+dma_get_cache_alignment(void)
+{
+	return L1_CACHE_BYTES;
+}
+
+#define dma_is_consistent(d, h)	(1)
+
+static inline void
+dma_cache_sync(struct device *dev, void *vaddr, size_t size,
+	       enum dma_data_direction direction)
+{
+	consistent_sync(vaddr, size, direction);
+}
+
+#endif	/* _XTENSA_DMA_MAPPING_H */
diff --git a/arch/xtensa/include/asm/dma.h b/arch/xtensa/include/asm/dma.h
new file mode 100644
index 0000000..e30f3ab
--- /dev/null
+++ b/arch/xtensa/include/asm/dma.h
@@ -0,0 +1,61 @@
+/*
+ * include/asm-xtensa/dma.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_DMA_H
+#define _XTENSA_DMA_H
+
+#include <asm/io.h>		/* need byte IO */
+
+/*
+ * This is only to be defined if we have PC-like DMA.
+ * By default this is not true on an Xtensa processor,
+ * however on boards with a PCI bus, such functionality
+ * might be emulated externally.
+ *
+ * NOTE:  there still exists driver code that assumes
+ * this is defined, eg. drivers/sound/soundcard.c (as of 2.4).
+ */
+#define MAX_DMA_CHANNELS	8
+
+/*
+ * The maximum virtual address to which DMA transfers
+ * can be performed on this platform.
+ *
+ * NOTE: This is board (platform) specific, not processor-specific!
+ *
+ * NOTE: This assumes DMA transfers can only be performed on
+ *	the section of physical memory contiguously mapped in virtual
+ *	space for the kernel.  For the Xtensa architecture, this
+ *	means the maximum possible size of this DMA area is
+ *	the size of the statically mapped kernel segment
+ *	(XCHAL_KSEG_{CACHED,BYPASS}_SIZE), ie. 128 MB.
+ *
+ * NOTE: When the entire KSEG area is DMA capable, we substract
+ *	one from the max address so that the virt_to_phys() macro
+ *	works correctly on the address (otherwise the address
+ *	enters another area, and virt_to_phys() may not return
+ *	the value desired).
+ */
+
+#define MAX_DMA_ADDRESS		(PAGE_OFFSET + XCHAL_KIO_SIZE - 1)
+
+
+/* Reserve and release a DMA channel */
+extern int request_dma(unsigned int dmanr, const char * device_id);
+extern void free_dma(unsigned int dmanr);
+
+#ifdef CONFIG_PCI
+extern int isa_dma_bridge_buggy;
+#else
+#define isa_dma_bridge_buggy 	(0)
+#endif
+
+
+#endif
diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h
new file mode 100644
index 0000000..c3f53e7
--- /dev/null
+++ b/arch/xtensa/include/asm/elf.h
@@ -0,0 +1,205 @@
+/*
+ * include/asm-xtensa/elf.h
+ *
+ * ELF register definitions
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ELF_H
+#define _XTENSA_ELF_H
+
+#include <asm/ptrace.h>
+
+/* Xtensa processor ELF architecture-magic number */
+
+#define EM_XTENSA	94
+#define EM_XTENSA_OLD	0xABC7
+
+/* Xtensa relocations defined by the ABIs */
+
+#define R_XTENSA_NONE           0
+#define R_XTENSA_32             1
+#define R_XTENSA_RTLD           2
+#define R_XTENSA_GLOB_DAT       3
+#define R_XTENSA_JMP_SLOT       4
+#define R_XTENSA_RELATIVE       5
+#define R_XTENSA_PLT            6
+#define R_XTENSA_OP0            8
+#define R_XTENSA_OP1            9
+#define R_XTENSA_OP2            10
+#define R_XTENSA_ASM_EXPAND	11
+#define R_XTENSA_ASM_SIMPLIFY	12
+#define R_XTENSA_GNU_VTINHERIT	15
+#define R_XTENSA_GNU_VTENTRY	16
+#define R_XTENSA_DIFF8		17
+#define R_XTENSA_DIFF16		18
+#define R_XTENSA_DIFF32		19
+#define R_XTENSA_SLOT0_OP	20
+#define R_XTENSA_SLOT1_OP	21
+#define R_XTENSA_SLOT2_OP	22
+#define R_XTENSA_SLOT3_OP	23
+#define R_XTENSA_SLOT4_OP	24
+#define R_XTENSA_SLOT5_OP	25
+#define R_XTENSA_SLOT6_OP	26
+#define R_XTENSA_SLOT7_OP	27
+#define R_XTENSA_SLOT8_OP	28
+#define R_XTENSA_SLOT9_OP	29
+#define R_XTENSA_SLOT10_OP	30
+#define R_XTENSA_SLOT11_OP	31
+#define R_XTENSA_SLOT12_OP	32
+#define R_XTENSA_SLOT13_OP	33
+#define R_XTENSA_SLOT14_OP	34
+#define R_XTENSA_SLOT0_ALT	35
+#define R_XTENSA_SLOT1_ALT	36
+#define R_XTENSA_SLOT2_ALT	37
+#define R_XTENSA_SLOT3_ALT	38
+#define R_XTENSA_SLOT4_ALT	39
+#define R_XTENSA_SLOT5_ALT	40
+#define R_XTENSA_SLOT6_ALT	41
+#define R_XTENSA_SLOT7_ALT	42
+#define R_XTENSA_SLOT8_ALT	43
+#define R_XTENSA_SLOT9_ALT	44
+#define R_XTENSA_SLOT10_ALT	45
+#define R_XTENSA_SLOT11_ALT	46
+#define R_XTENSA_SLOT12_ALT	47
+#define R_XTENSA_SLOT13_ALT	48
+#define R_XTENSA_SLOT14_ALT	49
+
+/* ELF register definitions. This is needed for core dump support.  */
+
+typedef unsigned long elf_greg_t;
+
+typedef struct {
+	elf_greg_t pc;
+	elf_greg_t ps;
+	elf_greg_t lbeg;
+	elf_greg_t lend;
+	elf_greg_t lcount;
+	elf_greg_t sar;
+	elf_greg_t windowstart;
+	elf_greg_t windowbase;
+	elf_greg_t reserved[8+48];
+	elf_greg_t a[64];
+} xtensa_gregset_t;
+
+#define ELF_NGREG	(sizeof(xtensa_gregset_t) / sizeof(elf_greg_t))
+
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#define ELF_NFPREG	18
+
+typedef unsigned int elf_fpreg_t;
+typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
+
+#define ELF_CORE_COPY_REGS(_eregs, _pregs) 				\
+	xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs);
+
+extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *);
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+
+#define elf_check_arch(x) ( ( (x)->e_machine == EM_XTENSA )  || \
+			    ( (x)->e_machine == EM_XTENSA_OLD ) )
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+
+#ifdef __XTENSA_EL__
+# define ELF_DATA	ELFDATA2LSB
+#elif defined(__XTENSA_EB__)
+# define ELF_DATA	ELFDATA2MSB
+#else
+# error processor byte order undefined!
+#endif
+
+#define ELF_CLASS	ELFCLASS32
+#define ELF_ARCH	EM_XTENSA
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE	PAGE_SIZE
+
+/*
+ * This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+ * use of this is to invoke "./ld.so someprog" to test out a new version of
+ * the loader.  We need to make sure that it is out of the way of the program
+ * that it will "exec", and that there is sufficient room for the brk.
+ */
+
+#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
+
+/*
+ * This yields a mask that user programs can use to figure out what
+ * instruction set this CPU supports.  This could be done in user space,
+ * but it's not easy, and we've already done it here.
+ */
+
+#define ELF_HWCAP	(0)
+
+/*
+ * This yields a string that ld.so will use to load implementation
+ * specific libraries for optimization.  This is more specific in
+ * intent than poking at uname or /proc/cpuinfo.
+ * For the moment, we have only optimizations for the Intel generations,
+ * but that could change...
+ */
+
+#define ELF_PLATFORM  (NULL)
+
+/*
+ * The Xtensa processor ABI says that when the program starts, a2
+ * contains a pointer to a function which might be registered using
+ * `atexit'.  This provides a mean for the dynamic linker to call
+ * DT_FINI functions for shared libraries that have been loaded before
+ * the code runs.
+ *
+ * A value of 0 tells we have no such handler.
+ *
+ * We might as well make sure everything else is cleared too (except
+ * for the stack pointer in a1), just to make things more
+ * deterministic.  Also, clearing a0 terminates debugger backtraces.
+ */
+
+#define ELF_PLAT_INIT(_r, load_addr) \
+  do { _r->areg[0]=0; /*_r->areg[1]=0;*/ _r->areg[2]=0;  _r->areg[3]=0;  \
+       _r->areg[4]=0;  _r->areg[5]=0;    _r->areg[6]=0;  _r->areg[7]=0;  \
+       _r->areg[8]=0;  _r->areg[9]=0;    _r->areg[10]=0; _r->areg[11]=0; \
+       _r->areg[12]=0; _r->areg[13]=0;   _r->areg[14]=0; _r->areg[15]=0; \
+  } while (0)
+
+typedef struct {
+	xtregs_opt_t	opt;
+	xtregs_user_t	user;
+#if XTENSA_HAVE_COPROCESSORS
+	xtregs_cp0_t	cp0;
+	xtregs_cp1_t	cp1;
+	xtregs_cp2_t	cp2;
+	xtregs_cp3_t	cp3;
+	xtregs_cp4_t	cp4;
+	xtregs_cp5_t	cp5;
+	xtregs_cp6_t	cp6;
+	xtregs_cp7_t	cp7;
+#endif
+} elf_xtregs_t;
+
+#define SET_PERSONALITY(ex) set_personality(PER_LINUX_32BIT)
+
+struct task_struct;
+
+extern void do_copy_regs (xtensa_gregset_t*, struct pt_regs*,
+			  struct task_struct*);
+extern void do_restore_regs (xtensa_gregset_t*, struct pt_regs*,
+			     struct task_struct*);
+extern void do_save_fpregs (elf_fpregset_t*, struct pt_regs*,
+			    struct task_struct*);
+extern int do_restore_fpregs (elf_fpregset_t*, struct pt_regs*,
+			      struct task_struct*);
+
+#endif	/* _XTENSA_ELF_H */
diff --git a/arch/xtensa/include/asm/emergency-restart.h b/arch/xtensa/include/asm/emergency-restart.h
new file mode 100644
index 0000000..108d8c4
--- /dev/null
+++ b/arch/xtensa/include/asm/emergency-restart.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_EMERGENCY_RESTART_H
+#define _ASM_EMERGENCY_RESTART_H
+
+#include <asm-generic/emergency-restart.h>
+
+#endif /* _ASM_EMERGENCY_RESTART_H */
diff --git a/arch/xtensa/include/asm/errno.h b/arch/xtensa/include/asm/errno.h
new file mode 100644
index 0000000..a0f3b96
--- /dev/null
+++ b/arch/xtensa/include/asm/errno.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/errno.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_ERRNO_H
+#define _XTENSA_ERRNO_H
+
+#include <asm-generic/errno.h>
+
+#endif	/* _XTENSA_ERRNO_H */
diff --git a/arch/xtensa/include/asm/fb.h b/arch/xtensa/include/asm/fb.h
new file mode 100644
index 0000000..c7df380
--- /dev/null
+++ b/arch/xtensa/include/asm/fb.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_FB_H_
+#define _ASM_FB_H_
+#include <linux/fb.h>
+
+#define fb_pgprotect(...) do {} while (0)
+
+static inline int fb_is_primary_device(struct fb_info *info)
+{
+	return 0;
+}
+
+#endif /* _ASM_FB_H_ */
diff --git a/arch/xtensa/include/asm/fcntl.h b/arch/xtensa/include/asm/fcntl.h
new file mode 100644
index 0000000..46ab12d
--- /dev/null
+++ b/arch/xtensa/include/asm/fcntl.h
@@ -0,0 +1 @@
+#include <asm-generic/fcntl.h>
diff --git a/arch/xtensa/include/asm/futex.h b/arch/xtensa/include/asm/futex.h
new file mode 100644
index 0000000..0b74582
--- /dev/null
+++ b/arch/xtensa/include/asm/futex.h
@@ -0,0 +1 @@
+#include <asm-generic/futex.h>
diff --git a/arch/xtensa/include/asm/hardirq.h b/arch/xtensa/include/asm/hardirq.h
new file mode 100644
index 0000000..87cb19d
--- /dev/null
+++ b/arch/xtensa/include/asm/hardirq.h
@@ -0,0 +1,28 @@
+/*
+ * include/asm-xtensa/hardirq.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HARDIRQ_H
+#define _XTENSA_HARDIRQ_H
+
+#include <linux/cache.h>
+#include <asm/irq.h>
+
+/* headers.S is sensitive to the offsets of these fields */
+typedef struct {
+	unsigned int __softirq_pending;
+	unsigned int __syscall_count;
+	struct task_struct * __ksoftirqd_task; /* waitqueue is too large */
+	unsigned int __nmi_count;	       /* arch dependent */
+} ____cacheline_aligned irq_cpustat_t;
+
+void ack_bad_irq(unsigned int irq);
+#include <linux/irq_cpustat.h>	/* Standard mappings for irq_cpustat_t above */
+
+#endif	/* _XTENSA_HARDIRQ_H */
diff --git a/arch/xtensa/include/asm/highmem.h b/arch/xtensa/include/asm/highmem.h
new file mode 100644
index 0000000..0a046ca
--- /dev/null
+++ b/arch/xtensa/include/asm/highmem.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/highmem.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HIGHMEM_H
+#define _XTENSA_HIGHMEM_H
+
+extern void flush_cache_kmaps(void);
+
+#endif
+
diff --git a/arch/xtensa/include/asm/hw_irq.h b/arch/xtensa/include/asm/hw_irq.h
new file mode 100644
index 0000000..3ddbea7
--- /dev/null
+++ b/arch/xtensa/include/asm/hw_irq.h
@@ -0,0 +1,14 @@
+/*
+ * include/asm-xtensa/hw_irq.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2002 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_HW_IRQ_H
+#define _XTENSA_HW_IRQ_H
+
+#endif
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
new file mode 100644
index 0000000..07b7299
--- /dev/null
+++ b/arch/xtensa/include/asm/io.h
@@ -0,0 +1,200 @@
+/*
+ * include/asm-xtensa/io.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IO_H
+#define _XTENSA_IO_H
+
+#ifdef __KERNEL__
+#include <asm/byteorder.h>
+#include <asm/page.h>
+#include <linux/kernel.h>
+
+#include <linux/types.h>
+
+#define XCHAL_KIO_CACHED_VADDR	0xe0000000
+#define XCHAL_KIO_BYPASS_VADDR	0xf0000000
+#define XCHAL_KIO_PADDR		0xf0000000
+#define XCHAL_KIO_SIZE		0x10000000
+
+#define IOADDR(x)		(XCHAL_KIO_BYPASS_VADDR + (x))
+
+/*
+ * swap functions to change byte order from little-endian to big-endian and
+ * vice versa.
+ */
+
+static inline unsigned short _swapw (unsigned short v)
+{
+	return (v << 8) | (v >> 8);
+}
+
+static inline unsigned int _swapl (unsigned int v)
+{
+	return (v << 24) | ((v & 0xff00) << 8) | ((v >> 8) & 0xff00) | (v >> 24);
+}
+
+/*
+ * Change virtual addresses to physical addresses and vv.
+ * These are trivial on the 1:1 Linux/Xtensa mapping
+ */
+
+static inline unsigned long virt_to_phys(volatile void * address)
+{
+	return __pa(address);
+}
+
+static inline void * phys_to_virt(unsigned long address)
+{
+	return __va(address);
+}
+
+/*
+ * virt_to_bus and bus_to_virt are deprecated.
+ */
+
+#define virt_to_bus(x)	virt_to_phys(x)
+#define bus_to_virt(x)	phys_to_virt(x)
+
+/*
+ * Return the virtual (cached) address for the specified bus memory.
+ * Note that we currently don't support any address outside the KIO segment.
+ */
+
+static inline void *ioremap(unsigned long offset, unsigned long size)
+{
+	if (offset >= XCHAL_KIO_PADDR
+	    && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+		return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_BYPASS_VADDR);
+
+	else
+		BUG();
+}
+
+static inline void *ioremap_nocache(unsigned long offset, unsigned long size)
+{
+	if (offset >= XCHAL_KIO_PADDR
+	    && offset < XCHAL_KIO_PADDR + XCHAL_KIO_SIZE)
+		return (void*)(offset-XCHAL_KIO_PADDR+XCHAL_KIO_CACHED_VADDR);
+	else
+		BUG();
+}
+
+static inline void iounmap(void *addr)
+{
+}
+
+/*
+ * Generic I/O
+ */
+
+#define readb(addr) \
+	({ unsigned char __v = (*(volatile unsigned char *)(addr)); __v; })
+#define readw(addr) \
+	({ unsigned short __v = (*(volatile unsigned short *)(addr)); __v; })
+#define readl(addr) \
+	({ unsigned int __v = (*(volatile unsigned int *)(addr)); __v; })
+#define writeb(b, addr) (void)((*(volatile unsigned char *)(addr)) = (b))
+#define writew(b, addr) (void)((*(volatile unsigned short *)(addr)) = (b))
+#define writel(b, addr) (void)((*(volatile unsigned int *)(addr)) = (b))
+
+static inline __u8 __raw_readb(const volatile void __iomem *addr)
+{
+          return *(__force volatile __u8 *)(addr);
+}
+static inline __u16 __raw_readw(const volatile void __iomem *addr)
+{
+          return *(__force volatile __u16 *)(addr);
+}
+static inline __u32 __raw_readl(const volatile void __iomem *addr)
+{
+          return *(__force volatile __u32 *)(addr);
+}
+static inline void __raw_writeb(__u8 b, volatile void __iomem *addr)
+{
+          *(__force volatile __u8 *)(addr) = b;
+}
+static inline void __raw_writew(__u16 b, volatile void __iomem *addr)
+{
+          *(__force volatile __u16 *)(addr) = b;
+}
+static inline void __raw_writel(__u32 b, volatile void __iomem *addr)
+{
+          *(__force volatile __u32 *)(addr) = b;
+}
+
+/* These are the definitions for the x86 IO instructions
+ * inb/inw/inl/outb/outw/outl, the "string" versions
+ * insb/insw/insl/outsb/outsw/outsl, and the "pausing" versions
+ * inb_p/inw_p/...
+ * The macros don't do byte-swapping.
+ */
+
+#define inb(port)		readb((u8 *)((port)))
+#define outb(val, port)		writeb((val),(u8 *)((unsigned long)(port)))
+#define inw(port)		readw((u16 *)((port)))
+#define outw(val, port)		writew((val),(u16 *)((unsigned long)(port)))
+#define inl(port)		readl((u32 *)((port)))
+#define outl(val, port)		writel((val),(u32 *)((unsigned long)(port)))
+
+#define inb_p(port)		inb((port))
+#define outb_p(val, port)	outb((val), (port))
+#define inw_p(port)		inw((port))
+#define outw_p(val, port)	outw((val), (port))
+#define inl_p(port)		inl((port))
+#define outl_p(val, port)	outl((val), (port))
+
+extern void insb (unsigned long port, void *dst, unsigned long count);
+extern void insw (unsigned long port, void *dst, unsigned long count);
+extern void insl (unsigned long port, void *dst, unsigned long count);
+extern void outsb (unsigned long port, const void *src, unsigned long count);
+extern void outsw (unsigned long port, const void *src, unsigned long count);
+extern void outsl (unsigned long port, const void *src, unsigned long count);
+
+#define IO_SPACE_LIMIT ~0
+
+#define memset_io(a,b,c)       memset((void *)(a),(b),(c))
+#define memcpy_fromio(a,b,c)   memcpy((a),(void *)(b),(c))
+#define memcpy_toio(a,b,c)      memcpy((void *)(a),(b),(c))
+
+/* At this point the Xtensa doesn't provide byte swap instructions */
+
+#ifdef __XTENSA_EB__
+# define in_8(addr) (*(u8*)(addr))
+# define in_le16(addr) _swapw(*(u16*)(addr))
+# define in_le32(addr) _swapl(*(u32*)(addr))
+# define out_8(b, addr) *(u8*)(addr) = (b)
+# define out_le16(b, addr) *(u16*)(addr) = _swapw(b)
+# define out_le32(b, addr) *(u32*)(addr) = _swapl(b)
+#elif defined(__XTENSA_EL__)
+# define in_8(addr)  (*(u8*)(addr))
+# define in_le16(addr) (*(u16*)(addr))
+# define in_le32(addr) (*(u32*)(addr))
+# define out_8(b, addr) *(u8*)(addr) = (b)
+# define out_le16(b, addr) *(u16*)(addr) = (b)
+# define out_le32(b, addr) *(u32*)(addr) = (b)
+#else
+# error processor byte order undefined!
+#endif
+
+
+/*
+ * Convert a physical pointer to a virtual kernel pointer for /dev/mem access
+ */
+#define xlate_dev_mem_ptr(p)    __va(p)
+
+/*
+ * Convert a virtual cached pointer to an uncached pointer
+ */
+#define xlate_dev_kmem_ptr(p)   p
+
+
+#endif	/* __KERNEL__ */
+
+#endif	/* _XTENSA_IO_H */
diff --git a/arch/xtensa/include/asm/ioctl.h b/arch/xtensa/include/asm/ioctl.h
new file mode 100644
index 0000000..b279fe0
--- /dev/null
+++ b/arch/xtensa/include/asm/ioctl.h
@@ -0,0 +1 @@
+#include <asm-generic/ioctl.h>
diff --git a/arch/xtensa/include/asm/ioctls.h b/arch/xtensa/include/asm/ioctls.h
new file mode 100644
index 0000000..0ffa942
--- /dev/null
+++ b/arch/xtensa/include/asm/ioctls.h
@@ -0,0 +1,116 @@
+/*
+ * include/asm-xtensa/ioctls.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 - 2005 Tensilica Inc.
+ *
+ * Derived from "include/asm-i386/ioctls.h"
+ */
+
+#ifndef _XTENSA_IOCTLS_H
+#define _XTENSA_IOCTLS_H
+
+#include <asm/ioctl.h>
+
+#define FIOCLEX		_IO('f', 1)
+#define FIONCLEX	_IO('f', 2)
+#define FIOASYNC	_IOW('f', 125, int)
+#define FIONBIO		_IOW('f', 126, int)
+#define FIONREAD	_IOR('f', 127, int)
+#define TIOCINQ		FIONREAD
+#define FIOQSIZE	_IOR('f', 128, loff_t)
+
+#define TCGETS		0x5401
+#define TCSETS		0x5402
+#define TCSETSW		0x5403
+#define TCSETSF		0x5404
+
+#define TCGETA		_IOR('t', 23, struct termio)
+#define TCSETA		_IOW('t', 24, struct termio)
+#define TCSETAW		_IOW('t', 25, struct termio)
+#define TCSETAF		_IOW('t', 28, struct termio)
+
+#define TCSBRK		_IO('t', 29)
+#define TCXONC		_IO('t', 30)
+#define TCFLSH		_IO('t', 31)
+
+#define TIOCSWINSZ	_IOW('t', 103, struct winsize)
+#define TIOCGWINSZ	_IOR('t', 104, struct winsize)
+#define	TIOCSTART	_IO('t', 110)		/* start output, like ^Q */
+#define	TIOCSTOP	_IO('t', 111)		/* stop output, like ^S */
+#define TIOCOUTQ        _IOR('t', 115, int)     /* output queue size */
+
+#define TIOCSPGRP	_IOW('t', 118, int)
+#define TIOCGPGRP	_IOR('t', 119, int)
+
+#define TIOCEXCL	_IO('T', 12)
+#define TIOCNXCL	_IO('T', 13)
+#define TIOCSCTTY	_IO('T', 14)
+
+#define TIOCSTI		_IOW('T', 18, char)
+#define TIOCMGET	_IOR('T', 21, unsigned int)
+#define TIOCMBIS	_IOW('T', 22, unsigned int)
+#define TIOCMBIC	_IOW('T', 23, unsigned int)
+#define TIOCMSET	_IOW('T', 24, unsigned int)
+# define TIOCM_LE	0x001
+# define TIOCM_DTR	0x002
+# define TIOCM_RTS	0x004
+# define TIOCM_ST	0x008
+# define TIOCM_SR	0x010
+# define TIOCM_CTS	0x020
+# define TIOCM_CAR	0x040
+# define TIOCM_RNG	0x080
+# define TIOCM_DSR	0x100
+# define TIOCM_CD	TIOCM_CAR
+# define TIOCM_RI	TIOCM_RNG
+
+#define TIOCGSOFTCAR	_IOR('T', 25, unsigned int)
+#define TIOCSSOFTCAR	_IOW('T', 26, unsigned int)
+#define TIOCLINUX	_IOW('T', 28, char)
+#define TIOCCONS	_IO('T', 29)
+#define TIOCGSERIAL	_IOR('T', 30, struct serial_struct)
+#define TIOCSSERIAL	_IOW('T', 31, struct serial_struct)
+#define TIOCPKT		_IOW('T', 32, int)
+# define TIOCPKT_DATA		 0
+# define TIOCPKT_FLUSHREAD	 1
+# define TIOCPKT_FLUSHWRITE	 2
+# define TIOCPKT_STOP		 4
+# define TIOCPKT_START		 8
+# define TIOCPKT_NOSTOP		16
+# define TIOCPKT_DOSTOP		32
+
+
+#define TIOCNOTTY	_IO('T', 34)
+#define TIOCSETD	_IOW('T', 35, int)
+#define TIOCGETD	_IOR('T', 36, int)
+#define TCSBRKP		_IOW('T', 37, int)   /* Needed for POSIX tcsendbreak()*/
+#define TIOCTTYGSTRUCT	_IOR('T', 38, struct tty_struct) /* For debugging only*/
+#define TIOCSBRK	_IO('T', 39) 	     /* BSD compatibility */
+#define TIOCCBRK	_IO('T', 40)	     /* BSD compatibility */
+#define TIOCGSID	_IOR('T', 41, pid_t) /* Return the session ID of FD*/
+#define TCGETS2		_IOR('T', 42, struct termios2)
+#define TCSETS2		_IOW('T', 43, struct termios2)
+#define TCSETSW2	_IOW('T', 44, struct termios2)
+#define TCSETSF2	_IOW('T', 45, struct termios2)
+#define TIOCGPTN	_IOR('T',0x30, unsigned int) /* Get Pty Number (of pty-mux device) */
+#define TIOCSPTLCK	_IOW('T',0x31, int)  /* Lock/unlock Pty */
+
+#define TIOCSERCONFIG	_IO('T', 83)
+#define TIOCSERGWILD	_IOR('T', 84,  int)
+#define TIOCSERSWILD	_IOW('T', 85,  int)
+#define TIOCGLCKTRMIOS	0x5456
+#define TIOCSLCKTRMIOS	0x5457
+#define TIOCSERGSTRUCT	0x5458		     /* For debugging only */
+#define TIOCSERGETLSR   _IOR('T', 89, unsigned int) /* Get line status reg. */
+  /* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+# define TIOCSER_TEMT    0x01		     /* Transmitter physically empty */
+#define TIOCSERGETMULTI _IOR('T', 90, struct serial_multiport_struct) /* Get multiport config  */
+#define TIOCSERSETMULTI _IOW('T', 91, struct serial_multiport_struct) /* Set multiport config */
+
+#define TIOCMIWAIT	_IO('T', 92) /* wait for a change on serial input line(s) */
+#define TIOCGICOUNT	0x545D	/* read serial port inline interrupt counts */
+
+#endif /* _XTENSA_IOCTLS_H */
diff --git a/arch/xtensa/include/asm/ipcbuf.h b/arch/xtensa/include/asm/ipcbuf.h
new file mode 100644
index 0000000..c33aa6a
--- /dev/null
+++ b/arch/xtensa/include/asm/ipcbuf.h
@@ -0,0 +1,37 @@
+/*
+ * include/asm-xtensa/ipcbuf.h
+ *
+ * The ipc64_perm structure for the Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IPCBUF_H
+#define _XTENSA_IPCBUF_H
+
+/*
+ * Pad space is left for:
+ * - 32-bit mode_t and seq
+ * - 2 miscellaneous 32-bit values
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ */
+
+struct ipc64_perm
+{
+	__kernel_key_t		key;
+	__kernel_uid32_t	uid;
+	__kernel_gid32_t	gid;
+	__kernel_uid32_t	cuid;
+	__kernel_gid32_t	cgid;
+	__kernel_mode_t		mode;
+	unsigned long		seq;
+	unsigned long		__unused1;
+	unsigned long		__unused2;
+};
+
+#endif /* _XTENSA_IPCBUF_H */
diff --git a/arch/xtensa/include/asm/irq.h b/arch/xtensa/include/asm/irq.h
new file mode 100644
index 0000000..1620d1e
--- /dev/null
+++ b/arch/xtensa/include/asm/irq.h
@@ -0,0 +1,30 @@
+/*
+ * include/asm-xtensa/irq.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_IRQ_H
+#define _XTENSA_IRQ_H
+
+#include <platform/hardware.h>
+#include <variant/core.h>
+
+#ifndef PLATFORM_NR_IRQS
+# define PLATFORM_NR_IRQS 0
+#endif
+#define XTENSA_NR_IRQS XCHAL_NUM_INTERRUPTS
+#define NR_IRQS (XTENSA_NR_IRQS + PLATFORM_NR_IRQS)
+
+static __inline__ int irq_canonicalize(int irq)
+{
+	return (irq);
+}
+
+struct irqaction;
+
+#endif	/* _XTENSA_IRQ_H */
diff --git a/arch/xtensa/include/asm/irq_regs.h b/arch/xtensa/include/asm/irq_regs.h
new file mode 100644
index 0000000..3dd9c0b
--- /dev/null
+++ b/arch/xtensa/include/asm/irq_regs.h
@@ -0,0 +1 @@
+#include <asm-generic/irq_regs.h>
diff --git a/arch/xtensa/include/asm/kdebug.h b/arch/xtensa/include/asm/kdebug.h
new file mode 100644
index 0000000..6ece1b0
--- /dev/null
+++ b/arch/xtensa/include/asm/kdebug.h
@@ -0,0 +1 @@
+#include <asm-generic/kdebug.h>
diff --git a/arch/xtensa/include/asm/kmap_types.h b/arch/xtensa/include/asm/kmap_types.h
new file mode 100644
index 0000000..9e822d2
--- /dev/null
+++ b/arch/xtensa/include/asm/kmap_types.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-xtensa/kmap_types.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_KMAP_TYPES_H
+#define _XTENSA_KMAP_TYPES_H
+
+enum km_type {
+  KM_BOUNCE_READ,
+  KM_SKB_SUNRPC_DATA,
+  KM_SKB_DATA_SOFTIRQ,
+  KM_USER0,
+  KM_USER1,
+  KM_BIO_SRC_IRQ,
+  KM_BIO_DST_IRQ,
+  KM_PTE0,
+  KM_PTE1,
+  KM_IRQ0,
+  KM_IRQ1,
+  KM_SOFTIRQ0,
+  KM_SOFTIRQ1,
+  KM_TYPE_NR
+};
+
+#endif	/* _XTENSA_KMAP_TYPES_H */
diff --git a/arch/xtensa/include/asm/linkage.h b/arch/xtensa/include/asm/linkage.h
new file mode 100644
index 0000000..bf2128a
--- /dev/null
+++ b/arch/xtensa/include/asm/linkage.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/linkage.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_LINKAGE_H
+#define _XTENSA_LINKAGE_H
+
+/* Nothing to do here ... */
+
+#endif	/* _XTENSA_LINKAGE_H */
diff --git a/arch/xtensa/include/asm/local.h b/arch/xtensa/include/asm/local.h
new file mode 100644
index 0000000..48723e5
--- /dev/null
+++ b/arch/xtensa/include/asm/local.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/local.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_LOCAL_H
+#define _XTENSA_LOCAL_H
+
+#include <asm-generic/local.h>
+
+#endif /* _XTENSA_LOCAL_H */
diff --git a/arch/xtensa/include/asm/mman.h b/arch/xtensa/include/asm/mman.h
new file mode 100644
index 0000000..9b92620
--- /dev/null
+++ b/arch/xtensa/include/asm/mman.h
@@ -0,0 +1,84 @@
+/*
+ * include/asm-xtensa/mman.h
+ *
+ * Xtensa Processor memory-manager definitions
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995 by Ralf Baechle
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMAN_H
+#define _XTENSA_MMAN_H
+
+/*
+ * Protections are chosen from these bits, OR'd together.  The
+ * implementation does not necessarily support PROT_EXEC or PROT_WRITE
+ * without PROT_READ.  The only guarantees are that no writing will be
+ * allowed without PROT_WRITE and no access will be allowed for PROT_NONE.
+ */
+
+#define PROT_NONE	0x0		/* page can not be accessed */
+#define PROT_READ	0x1		/* page can be read */
+#define PROT_WRITE	0x2		/* page can be written */
+#define PROT_EXEC	0x4		/* page can be executed */
+
+#define PROT_SEM	0x10		/* page may be used for atomic ops */
+#define PROT_GROWSDOWN	0x01000000	/* mprotect flag: extend change to start of growsdown vma */
+#define PROT_GROWSUP	0x02000000	/* mprotect flag: extend change to end fo growsup vma */
+
+/*
+ * Flags for mmap
+ */
+#define MAP_SHARED	0x001		/* Share changes */
+#define MAP_PRIVATE	0x002		/* Changes are private */
+#define MAP_TYPE	0x00f		/* Mask for type of mapping */
+#define MAP_FIXED	0x010		/* Interpret addr exactly */
+
+/* not used by linux, but here to make sure we don't clash with ABI defines */
+#define MAP_RENAME	0x020		/* Assign page to file */
+#define MAP_AUTOGROW	0x040		/* File may grow by writing */
+#define MAP_LOCAL	0x080		/* Copy on fork/sproc */
+#define MAP_AUTORSRV	0x100		/* Logical swap reserved on demand */
+
+/* These are linux-specific */
+#define MAP_NORESERVE	0x0400		/* don't check for reservations */
+#define MAP_ANONYMOUS	0x0800		/* don't use a file */
+#define MAP_GROWSDOWN	0x1000		/* stack-like segment */
+#define MAP_DENYWRITE	0x2000		/* ETXTBSY */
+#define MAP_EXECUTABLE	0x4000		/* mark it as an executable */
+#define MAP_LOCKED	0x8000		/* pages are locked */
+#define MAP_POPULATE	0x10000		/* populate (prefault) pagetables */
+#define MAP_NONBLOCK	0x20000		/* do not block on IO */
+
+/*
+ * Flags for msync
+ */
+#define MS_ASYNC	0x0001		/* sync memory asynchronously */
+#define MS_INVALIDATE	0x0002		/* invalidate mappings & caches */
+#define MS_SYNC		0x0004		/* synchronous memory sync */
+
+/*
+ * Flags for mlockall
+ */
+#define MCL_CURRENT	1		/* lock all current mappings */
+#define MCL_FUTURE	2		/* lock all future mappings */
+
+#define MADV_NORMAL	0		/* no further special treatment */
+#define MADV_RANDOM	1		/* expect random page references */
+#define MADV_SEQUENTIAL	2		/* expect sequential page references */
+#define MADV_WILLNEED	3		/* will need these pages */
+#define MADV_DONTNEED	4		/* don't need these pages */
+
+/* common parameters: try to keep these consistent across architectures */
+#define MADV_REMOVE	9		/* remove these pages & resources */
+#define MADV_DONTFORK	10		/* don't inherit across fork */
+#define MADV_DOFORK	11		/* do inherit across fork */
+
+/* compatibility flags */
+#define MAP_FILE	0
+
+#endif /* _XTENSA_MMAN_H */
diff --git a/arch/xtensa/include/asm/mmu.h b/arch/xtensa/include/asm/mmu.h
new file mode 100644
index 0000000..44c5bb0
--- /dev/null
+++ b/arch/xtensa/include/asm/mmu.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/mmu.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMU_H
+#define _XTENSA_MMU_H
+
+/* Default "unsigned long" context */
+typedef unsigned long mm_context_t;
+
+#endif	/* _XTENSA_MMU_H */
diff --git a/arch/xtensa/include/asm/mmu_context.h b/arch/xtensa/include/asm/mmu_context.h
new file mode 100644
index 0000000..c0fd8e5
--- /dev/null
+++ b/arch/xtensa/include/asm/mmu_context.h
@@ -0,0 +1,136 @@
+/*
+ * include/asm-xtensa/mmu_context.h
+ *
+ * Switch an MMU context.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MMU_CONTEXT_H
+#define _XTENSA_MMU_CONTEXT_H
+
+#include <linux/stringify.h>
+#include <linux/sched.h>
+
+#include <asm/pgtable.h>
+#include <asm/cacheflush.h>
+#include <asm/tlbflush.h>
+#include <asm-generic/mm_hooks.h>
+
+#define XCHAL_MMU_ASID_BITS	8
+
+#if (XCHAL_HAVE_TLBS != 1)
+# error "Linux must have an MMU!"
+#endif
+
+extern unsigned long asid_cache;
+
+/*
+ * NO_CONTEXT is the invalid ASID value that we don't ever assign to
+ * any user or kernel context.
+ *
+ * 0 invalid
+ * 1 kernel
+ * 2 reserved
+ * 3 reserved
+ * 4...255 available
+ */
+
+#define NO_CONTEXT	0
+#define ASID_USER_FIRST	4
+#define ASID_MASK	((1 << XCHAL_MMU_ASID_BITS) - 1)
+#define ASID_INSERT(x)	(0x03020001 | (((x) & ASID_MASK) << 8))
+
+static inline void set_rasid_register (unsigned long val)
+{
+	__asm__ __volatile__ (" wsr %0, "__stringify(RASID)"\n\t"
+			      " isync\n" : : "a" (val));
+}
+
+static inline unsigned long get_rasid_register (void)
+{
+	unsigned long tmp;
+	__asm__ __volatile__ (" rsr %0,"__stringify(RASID)"\n\t" : "=a" (tmp));
+	return tmp;
+}
+
+static inline void
+__get_new_mmu_context(struct mm_struct *mm)
+{
+	extern void flush_tlb_all(void);
+	if (! (++asid_cache & ASID_MASK) ) {
+		flush_tlb_all(); /* start new asid cycle */
+		asid_cache += ASID_USER_FIRST;
+	}
+	mm->context = asid_cache;
+}
+
+static inline void
+__load_mmu_context(struct mm_struct *mm)
+{
+	set_rasid_register(ASID_INSERT(mm->context));
+	invalidate_page_directory();
+}
+
+/*
+ * Initialize the context related info for a new mm_struct
+ * instance.
+ */
+
+static inline int
+init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+{
+	mm->context = NO_CONTEXT;
+	return 0;
+}
+
+/*
+ * After we have set current->mm to a new value, this activates
+ * the context for the new mm so we see the new mappings.
+ */
+static inline void
+activate_mm(struct mm_struct *prev, struct mm_struct *next)
+{
+	/* Unconditionally get a new ASID.  */
+
+	__get_new_mmu_context(next);
+	__load_mmu_context(next);
+}
+
+
+static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
+                             struct task_struct *tsk)
+{
+	unsigned long asid = asid_cache;
+
+	/* Check if our ASID is of an older version and thus invalid */
+
+	if (next->context == NO_CONTEXT || ((next->context^asid) & ~ASID_MASK))
+		__get_new_mmu_context(next);
+
+	__load_mmu_context(next);
+}
+
+#define deactivate_mm(tsk, mm)	do { } while(0)
+
+/*
+ * Destroy context related info for an mm_struct that is about
+ * to be put to rest.
+ */
+static inline void destroy_context(struct mm_struct *mm)
+{
+	invalidate_page_directory();
+}
+
+
+static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
+{
+	/* Nothing to do. */
+
+}
+
+#endif /* _XTENSA_MMU_CONTEXT_H */
diff --git a/arch/xtensa/include/asm/module.h b/arch/xtensa/include/asm/module.h
new file mode 100644
index 0000000..d9b34be
--- /dev/null
+++ b/arch/xtensa/include/asm/module.h
@@ -0,0 +1,27 @@
+/*
+ * include/asm-xtensa/module.h
+ *
+ * This file contains the module code specific to the Xtensa architecture.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_MODULE_H
+#define _XTENSA_MODULE_H
+
+struct mod_arch_specific
+{
+	/* No special elements, yet. */
+};
+
+#define MODULE_ARCH_VERMAGIC "xtensa-" __stringify(XCHAL_CORE_ID) " "
+
+#define Elf_Shdr Elf32_Shdr
+#define Elf_Sym Elf32_Sym
+#define Elf_Ehdr Elf32_Ehdr
+
+#endif	/* _XTENSA_MODULE_H */
diff --git a/arch/xtensa/include/asm/msgbuf.h b/arch/xtensa/include/asm/msgbuf.h
new file mode 100644
index 0000000..693c967
--- /dev/null
+++ b/arch/xtensa/include/asm/msgbuf.h
@@ -0,0 +1,48 @@
+/*
+ * include/asm-xtensa/msgbuf.h
+ *
+ * The msqid64_ds structure for the Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ */
+
+#ifndef _XTENSA_MSGBUF_H
+#define _XTENSA_MSGBUF_H
+
+struct msqid64_ds {
+	struct ipc64_perm msg_perm;
+#ifdef __XTENSA_EB__
+	unsigned int	__unused1;
+	__kernel_time_t msg_stime;	/* last msgsnd time */
+	unsigned int	__unused2;
+	__kernel_time_t msg_rtime;	/* last msgrcv time */
+	unsigned int	__unused3;
+	__kernel_time_t msg_ctime;	/* last change time */
+#elif defined(__XTENSA_EL__)
+	__kernel_time_t msg_stime;	/* last msgsnd time */
+	unsigned int	__unused1;
+	__kernel_time_t msg_rtime;	/* last msgrcv time */
+	unsigned int	__unused2;
+	__kernel_time_t msg_ctime;	/* last change time */
+	unsigned int	__unused3;
+#else
+# error processor byte order undefined!
+#endif
+	unsigned long  msg_cbytes;	/* current number of bytes on queue */
+	unsigned long  msg_qnum;	/* number of messages in queue */
+	unsigned long  msg_qbytes;	/* max number of bytes on queue */
+	__kernel_pid_t msg_lspid;	/* pid of last msgsnd */
+	__kernel_pid_t msg_lrpid;	/* last receive pid */
+	unsigned long  __unused4;
+	unsigned long  __unused5;
+};
+
+#endif	/* _XTENSA_MSGBUF_H */
diff --git a/arch/xtensa/include/asm/mutex.h b/arch/xtensa/include/asm/mutex.h
new file mode 100644
index 0000000..458c1f7
--- /dev/null
+++ b/arch/xtensa/include/asm/mutex.h
@@ -0,0 +1,9 @@
+/*
+ * Pull in the generic implementation for the mutex fastpath.
+ *
+ * TODO: implement optimized primitives instead, or leave the generic
+ * implementation in place, or pick the atomic_xchg() based generic
+ * implementation. (see asm-generic/mutex-xchg.h for details)
+ */
+
+#include <asm-generic/mutex-dec.h>
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h
new file mode 100644
index 0000000..11f7dc2
--- /dev/null
+++ b/arch/xtensa/include/asm/page.h
@@ -0,0 +1,174 @@
+/*
+ * include/asm-xtensa/page.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PAGE_H
+#define _XTENSA_PAGE_H
+
+#include <asm/processor.h>
+#include <asm/types.h>
+#include <asm/cache.h>
+
+/*
+ * Fixed TLB translations in the processor.
+ */
+
+#define XCHAL_KSEG_CACHED_VADDR 0xd0000000
+#define XCHAL_KSEG_BYPASS_VADDR 0xd8000000
+#define XCHAL_KSEG_PADDR        0x00000000
+#define XCHAL_KSEG_SIZE         0x08000000
+
+/*
+ * PAGE_SHIFT determines the page size
+ */
+
+#define PAGE_SHIFT		12
+#define PAGE_SIZE		(__XTENSA_UL_CONST(1) << PAGE_SHIFT)
+#define PAGE_MASK		(~(PAGE_SIZE-1))
+
+#define PAGE_OFFSET		XCHAL_KSEG_CACHED_VADDR
+#define MAX_MEM_PFN		XCHAL_KSEG_SIZE
+#define PGTABLE_START		0x80000000
+
+/*
+ * Cache aliasing:
+ *
+ * If the cache size for one way is greater than the page size, we have to
+ * deal with cache aliasing. The cache index is wider than the page size:
+ *
+ * |    |cache| cache index
+ * | pfn  |off|	virtual address
+ * |xxxx:X|zzz|
+ * |    : |   |
+ * | \  / |   |
+ * |trans.|   |
+ * | /  \ |   |
+ * |yyyy:Y|zzz|	physical address
+ *
+ * When the page number is translated to the physical page address, the lowest
+ * bit(s) (X) that are part of the cache index are also translated (Y).
+ * If this translation changes bit(s) (X), the cache index is also afected,
+ * thus resulting in a different cache line than before.
+ * The kernel does not provide a mechanism to ensure that the page color
+ * (represented by this bit) remains the same when allocated or when pages
+ * are remapped. When user pages are mapped into kernel space, the color of
+ * the page might also change.
+ *
+ * We use the address space VMALLOC_END ... VMALLOC_END + DCACHE_WAY_SIZE * 2
+ * to temporarily map a patch so we can match the color.
+ */
+
+#if DCACHE_WAY_SIZE > PAGE_SIZE
+# define DCACHE_ALIAS_ORDER	(DCACHE_WAY_SHIFT - PAGE_SHIFT)
+# define DCACHE_ALIAS_MASK	(PAGE_MASK & (DCACHE_WAY_SIZE - 1))
+# define DCACHE_ALIAS(a)	(((a) & DCACHE_ALIAS_MASK) >> PAGE_SHIFT)
+# define DCACHE_ALIAS_EQ(a,b)	((((a) ^ (b)) & DCACHE_ALIAS_MASK) == 0)
+#else
+# define DCACHE_ALIAS_ORDER	0
+#endif
+
+#if ICACHE_WAY_SIZE > PAGE_SIZE
+# define ICACHE_ALIAS_ORDER	(ICACHE_WAY_SHIFT - PAGE_SHIFT)
+# define ICACHE_ALIAS_MASK	(PAGE_MASK & (ICACHE_WAY_SIZE - 1))
+# define ICACHE_ALIAS(a)	(((a) & ICACHE_ALIAS_MASK) >> PAGE_SHIFT)
+# define ICACHE_ALIAS_EQ(a,b)	((((a) ^ (b)) & ICACHE_ALIAS_MASK) == 0)
+#else
+# define ICACHE_ALIAS_ORDER	0
+#endif
+
+
+#ifdef __ASSEMBLY__
+
+#define __pgprot(x)	(x)
+
+#else
+
+/*
+ * These are used to make use of C type-checking..
+ */
+
+typedef struct { unsigned long pte; } pte_t;		/* page table entry */
+typedef struct { unsigned long pgd; } pgd_t;		/* PGD table entry */
+typedef struct { unsigned long pgprot; } pgprot_t;
+typedef struct page *pgtable_t;
+
+#define pte_val(x)	((x).pte)
+#define pgd_val(x)	((x).pgd)
+#define pgprot_val(x)	((x).pgprot)
+
+#define __pte(x)	((pte_t) { (x) } )
+#define __pgd(x)	((pgd_t) { (x) } )
+#define __pgprot(x)	((pgprot_t) { (x) } )
+
+/*
+ * Pure 2^n version of get_order
+ * Use 'nsau' instructions if supported by the processor or the generic version.
+ */
+
+#if XCHAL_HAVE_NSA
+
+static inline __attribute_const__ int get_order(unsigned long size)
+{
+	int lz;
+	asm ("nsau %0, %1" : "=r" (lz) : "r" ((size - 1) >> PAGE_SHIFT));
+	return 32 - lz;
+}
+
+#else
+
+# include <asm-generic/page.h>
+
+#endif
+
+struct page;
+extern void clear_page(void *page);
+extern void copy_page(void *to, void *from);
+
+/*
+ * If we have cache aliasing and writeback caches, we might have to do
+ * some extra work
+ */
+
+#if DCACHE_WAY_SIZE > PAGE_SIZE
+extern void clear_user_page(void*, unsigned long, struct page*);
+extern void copy_user_page(void*, void*, unsigned long, struct page*);
+#else
+# define clear_user_page(page, vaddr, pg)	clear_page(page)
+# define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
+#endif
+
+/*
+ * This handles the memory map.  We handle pages at
+ * XCHAL_KSEG_CACHED_VADDR for kernels with 32 bit address space.
+ * These macros are for conversion of kernel address, not user
+ * addresses.
+ */
+
+#define __pa(x)			((unsigned long) (x) - PAGE_OFFSET)
+#define __va(x)			((void *)((unsigned long) (x) + PAGE_OFFSET))
+#define pfn_valid(pfn)		((unsigned long)pfn < max_mapnr)
+#ifdef CONFIG_DISCONTIGMEM
+# error CONFIG_DISCONTIGMEM not supported
+#endif
+
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define page_to_virt(page)	__va(page_to_pfn(page) << PAGE_SHIFT)
+#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
+
+#define WANT_PAGE_VIRTUAL
+
+
+#endif /* __ASSEMBLY__ */
+
+#define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
+				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#include <asm-generic/memory_model.h>
+#endif /* _XTENSA_PAGE_H */
diff --git a/arch/xtensa/include/asm/param.h b/arch/xtensa/include/asm/param.h
new file mode 100644
index 0000000..ba03d5a
--- /dev/null
+++ b/arch/xtensa/include/asm/param.h
@@ -0,0 +1,34 @@
+/*
+ * include/asm-xtensa/param.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PARAM_H
+#define _XTENSA_PARAM_H
+
+#ifdef __KERNEL__
+# define HZ		CONFIG_HZ	/* internal timer frequency */
+# define USER_HZ	100		/* for user interfaces in "ticks" */
+# define CLOCKS_PER_SEC (USER_HZ)	/* frequnzy at which times() counts */
+#else
+# define HZ		100
+#endif
+
+#define EXEC_PAGESIZE	4096
+
+#ifndef NGROUPS
+#define NGROUPS		32
+#endif
+
+#ifndef NOGROUP
+#define NOGROUP		(-1)
+#endif
+
+#define MAXHOSTNAMELEN	64	/* max length of hostname */
+
+#endif /* _XTENSA_PARAM_H */
diff --git a/arch/xtensa/include/asm/pci-bridge.h b/arch/xtensa/include/asm/pci-bridge.h
new file mode 100644
index 0000000..00fcbd7
--- /dev/null
+++ b/arch/xtensa/include/asm/pci-bridge.h
@@ -0,0 +1,88 @@
+/*
+ * include/asm-xtensa/pci-bridge.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PCI_BRIDGE_H
+#define _XTENSA_PCI_BRIDGE_H
+
+#ifdef __KERNEL__
+
+struct device_node;
+struct pci_controller;
+
+/*
+ * pciauto_bus_scan() enumerates the pci space.
+ */
+
+extern int pciauto_bus_scan(struct pci_controller *, int);
+
+struct pci_space {
+	unsigned long start;
+	unsigned long end;
+	unsigned long base;
+};
+
+/*
+ * Structure of a PCI controller (host bridge)
+ */
+
+struct pci_controller {
+	int index;			/* used for pci_controller_num */
+	struct pci_controller *next;
+        struct pci_bus *bus;
+	void *arch_data;
+
+	int first_busno;
+	int last_busno;
+
+	struct pci_ops *ops;
+	volatile unsigned int *cfg_addr;
+	volatile unsigned char *cfg_data;
+
+	/* Currently, we limit ourselves to 1 IO range and 3 mem
+	 * ranges since the common pci_bus structure can't handle more
+	 */
+	struct resource	io_resource;
+	struct resource mem_resources[3];
+	int mem_resource_count;
+
+	/* Host bridge I/O and Memory space
+	 * Used for BAR placement algorithms
+	 */
+	struct pci_space io_space;
+	struct pci_space mem_space;
+
+	/* Return the interrupt number fo a device. */
+	int (*map_irq)(struct pci_dev*, u8, u8);
+
+};
+
+static inline void pcibios_init_resource(struct resource *res,
+		unsigned long start, unsigned long end, int flags, char *name)
+{
+	res->start = start;
+	res->end = end;
+	res->flags = flags;
+	res->name = name;
+	res->parent = NULL;
+	res->sibling = NULL;
+	res->child = NULL;
+}
+
+
+/* These are used for config access before all the PCI probing has been done. */
+int early_read_config_byte(struct pci_controller*, int, int, int, u8*);
+int early_read_config_word(struct pci_controller*, int, int, int, u16*);
+int early_read_config_dword(struct pci_controller*, int, int, int, u32*);
+int early_write_config_byte(struct pci_controller*, int, int, int, u8);
+int early_write_config_word(struct pci_controller*, int, int, int, u16);
+int early_write_config_dword(struct pci_controller*, int, int, int, u32);
+
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_PCI_BRIDGE_H */
diff --git a/arch/xtensa/include/asm/pci.h b/arch/xtensa/include/asm/pci.h
new file mode 100644
index 0000000..66410ac
--- /dev/null
+++ b/arch/xtensa/include/asm/pci.h
@@ -0,0 +1,82 @@
+/*
+ * linux/include/asm-xtensa/pci.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PCI_H
+#define _XTENSA_PCI_H
+
+#ifdef __KERNEL__
+
+/* Can be used to override the logic in pci_scan_bus for skipping
+ * already-configured bus numbers - to be used for buggy BIOSes
+ * or architectures with incomplete PCI setup by the loader
+ */
+
+#define pcibios_assign_all_busses()	0
+
+extern struct pci_controller* pcibios_alloc_controller(void);
+
+static inline void pcibios_set_master(struct pci_dev *dev)
+{
+	/* No special bus mastering setup handling */
+}
+
+static inline void pcibios_penalize_isa_irq(int irq)
+{
+	/* We don't do dynamic PCI IRQ allocation */
+}
+
+/* Assume some values. (We should revise them, if necessary) */
+
+#define PCIBIOS_MIN_IO		0x2000
+#define PCIBIOS_MIN_MEM		0x10000000
+
+/* Dynamic DMA mapping stuff.
+ * Xtensa has everything mapped statically like x86.
+ */
+
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <asm/scatterlist.h>
+#include <linux/string.h>
+#include <asm/io.h>
+
+struct pci_dev;
+
+/* The PCI address space does equal the physical memory address space.
+ * The networking and block device layers use this boolean for bounce buffer
+ * decisions.
+ */
+
+#define PCI_DMA_BUS_IS_PHYS	(1)
+
+/* pci_unmap_{page,single} is a no-op, so */
+#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
+#define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
+#define pci_unmap_addr(PTR, ADDR_NAME)		(0)
+#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
+#define pci_ubnmap_len(PTR, LEN_NAME)		(0)
+#define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
+
+/* Map a range of PCI memory or I/O space for a device into user space */
+int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
+                        enum pci_mmap_state mmap_state, int write_combine);
+
+/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
+#define HAVE_PCI_MMAP	1
+
+#endif /* __KERNEL__ */
+
+/* Implement the pci_ DMA API in terms of the generic device dma_ one */
+#include <asm-generic/pci-dma-compat.h>
+
+/* Generic PCI */
+#include <asm-generic/pci.h>
+
+#endif	/* _XTENSA_PCI_H */
diff --git a/arch/xtensa/include/asm/percpu.h b/arch/xtensa/include/asm/percpu.h
new file mode 100644
index 0000000..6d2bc2a
--- /dev/null
+++ b/arch/xtensa/include/asm/percpu.h
@@ -0,0 +1,16 @@
+/*
+ * linux/include/asm-xtensa/percpu.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PERCPU__
+#define _XTENSA_PERCPU__
+
+#include <asm-generic/percpu.h>
+
+#endif /* _XTENSA_PERCPU__ */
diff --git a/arch/xtensa/include/asm/pgalloc.h b/arch/xtensa/include/asm/pgalloc.h
new file mode 100644
index 0000000..4f4a798
--- /dev/null
+++ b/arch/xtensa/include/asm/pgalloc.h
@@ -0,0 +1,73 @@
+/*
+ * include/asm-xtensa/pgalloc.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PGALLOC_H
+#define _XTENSA_PGALLOC_H
+
+#ifdef __KERNEL__
+
+#include <linux/highmem.h>
+
+/*
+ * Allocating and freeing a pmd is trivial: the 1-entry pmd is
+ * inside the pgd, so has no extra memory associated with it.
+ */
+
+#define pmd_populate_kernel(mm, pmdp, ptep)				     \
+	(pmd_val(*(pmdp)) = ((unsigned long)ptep))
+#define pmd_populate(mm, pmdp, page)					     \
+	(pmd_val(*(pmdp)) = ((unsigned long)page_to_virt(page)))
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+static inline pgd_t*
+pgd_alloc(struct mm_struct *mm)
+{
+	return (pgd_t*) __get_free_pages(GFP_KERNEL | __GFP_ZERO, PGD_ORDER);
+}
+
+static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+	free_page((unsigned long)pgd);
+}
+
+/* Use a slab cache for the pte pages (see also sparc64 implementation) */
+
+extern struct kmem_cache *pgtable_cache;
+
+static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm, 
+					 unsigned long address)
+{
+	return kmem_cache_alloc(pgtable_cache, GFP_KERNEL|__GFP_REPEAT);
+}
+
+static inline pgtable_t pte_alloc_one(struct mm_struct *mm,
+					unsigned long addr)
+{
+	struct page *page;
+
+	page = virt_to_page(pte_alloc_one_kernel(mm, addr));
+	pgtable_page_ctor(page);
+	return page;
+}
+
+static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
+{
+	kmem_cache_free(pgtable_cache, pte);
+}
+
+static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
+{
+	pgtable_page_dtor(pte);
+	kmem_cache_free(pgtable_cache, page_address(pte));
+}
+#define pmd_pgtable(pmd) pmd_page(pmd)
+
+#endif /* __KERNEL__ */
+#endif /* _XTENSA_PGALLOC_H */
diff --git a/arch/xtensa/include/asm/pgtable.h b/arch/xtensa/include/asm/pgtable.h
new file mode 100644
index 0000000..8014d96
--- /dev/null
+++ b/arch/xtensa/include/asm/pgtable.h
@@ -0,0 +1,416 @@
+/*
+ * include/asm-xtensa/pgtable.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PGTABLE_H
+#define _XTENSA_PGTABLE_H
+
+#include <asm-generic/pgtable-nopmd.h>
+#include <asm/page.h>
+
+/*
+ * We only use two ring levels, user and kernel space.
+ */
+
+#define USER_RING		1	/* user ring level */
+#define KERNEL_RING		0	/* kernel ring level */
+
+/*
+ * The Xtensa architecture port of Linux has a two-level page table system,
+ * i.e. the logical three-level Linux page table layout is folded.
+ * Each task has the following memory page tables:
+ *
+ *   PGD table (page directory), ie. 3rd-level page table:
+ *	One page (4 kB) of 1024 (PTRS_PER_PGD) pointers to PTE tables
+ *	(Architectures that don't have the PMD folded point to the PMD tables)
+ *
+ *	The pointer to the PGD table for a given task can be retrieved from
+ *	the task structure (struct task_struct*) t, e.g. current():
+ *	  (t->mm ? t->mm : t->active_mm)->pgd
+ *
+ *   PMD tables (page middle-directory), ie. 2nd-level page tables:
+ *	Absent for the Xtensa architecture (folded, PTRS_PER_PMD == 1).
+ *
+ *   PTE tables (page table entry), ie. 1st-level page tables:
+ *	One page (4 kB) of 1024 (PTRS_PER_PTE) PTEs with a special PTE
+ *	invalid_pte_table for absent mappings.
+ *
+ * The individual pages are 4 kB big with special pages for the empty_zero_page.
+ */
+
+#define PGDIR_SHIFT	22
+#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
+#define PGDIR_MASK	(~(PGDIR_SIZE-1))
+
+/*
+ * Entries per page directory level: we use two-level, so
+ * we don't really have any PMD directory physically.
+ */
+#define PTRS_PER_PTE		1024
+#define PTRS_PER_PTE_SHIFT	10
+#define PTRS_PER_PGD		1024
+#define PGD_ORDER		0
+#define USER_PTRS_PER_PGD	(TASK_SIZE/PGDIR_SIZE)
+#define FIRST_USER_ADDRESS	0
+#define FIRST_USER_PGD_NR	(FIRST_USER_ADDRESS >> PGDIR_SHIFT)
+
+/*
+ * Virtual memory area. We keep a distance to other memory regions to be
+ * on the safe side. We also use this area for cache aliasing.
+ */
+
+#define VMALLOC_START		0xC0000000
+#define VMALLOC_END		0xC7FEFFFF
+#define TLBTEMP_BASE_1		0xC7FF0000
+#define TLBTEMP_BASE_2		0xC7FF8000
+
+/*
+ * Xtensa Linux config PTE layout (when present):
+ *	31-12:	PPN
+ *	11-6:	Software
+ *	5-4:	RING
+ *	3-0:	CA
+ *
+ * Similar to the Alpha and MIPS ports, we need to keep track of the ref
+ * and mod bits in software.  We have a software "you can read
+ * from this page" bit, and a hardware one which actually lets the
+ * process read from the page.  On the same token we have a software
+ * writable bit and the real hardware one which actually lets the
+ * process write to the page.
+ *
+ * See further below for PTE layout for swapped-out pages.
+ */
+
+#define _PAGE_HW_EXEC		(1<<0)	/* hardware: page is executable */
+#define _PAGE_HW_WRITE		(1<<1)	/* hardware: page is writable */
+
+#define _PAGE_FILE		(1<<1)	/* non-linear mapping, if !present */
+#define _PAGE_PROTNONE		(3<<0)	/* special case for VM_PROT_NONE */
+
+/* None of these cache modes include MP coherency:  */
+#define _PAGE_CA_BYPASS		(0<<2)	/* bypass, non-speculative */
+#define _PAGE_CA_WB		(1<<2)	/* write-back */
+#define _PAGE_CA_WT		(2<<2)	/* write-through */
+#define _PAGE_CA_MASK		(3<<2)
+#define _PAGE_INVALID		(3<<2)
+
+#define _PAGE_USER		(1<<4)	/* user access (ring=1) */
+
+/* Software */
+#define _PAGE_WRITABLE_BIT	6
+#define _PAGE_WRITABLE		(1<<6)	/* software: page writable */
+#define _PAGE_DIRTY		(1<<7)	/* software: page dirty */
+#define _PAGE_ACCESSED		(1<<8)	/* software: page accessed (read) */
+
+/* On older HW revisions, we always have to set bit 0 */
+#if XCHAL_HW_VERSION_MAJOR < 2000
+# define _PAGE_VALID		(1<<0)
+#else
+# define _PAGE_VALID		0
+#endif
+
+#define _PAGE_CHG_MASK	(PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
+#define _PAGE_PRESENT	(_PAGE_VALID | _PAGE_CA_WB | _PAGE_ACCESSED)
+
+#ifdef CONFIG_MMU
+
+#define PAGE_NONE	   __pgprot(_PAGE_INVALID | _PAGE_USER | _PAGE_PROTNONE)
+#define PAGE_COPY	   __pgprot(_PAGE_PRESENT | _PAGE_USER)
+#define PAGE_COPY_EXEC	   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_HW_EXEC)
+#define PAGE_READONLY	   __pgprot(_PAGE_PRESENT | _PAGE_USER)
+#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_HW_EXEC)
+#define PAGE_SHARED	   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_WRITABLE)
+#define PAGE_SHARED_EXEC \
+	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_WRITABLE | _PAGE_HW_EXEC)
+#define PAGE_KERNEL	   __pgprot(_PAGE_PRESENT | _PAGE_HW_WRITE)
+#define PAGE_KERNEL_EXEC   __pgprot(_PAGE_PRESENT|_PAGE_HW_WRITE|_PAGE_HW_EXEC)
+
+#if (DCACHE_WAY_SIZE > PAGE_SIZE)
+# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED)
+#else
+# define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED | _PAGE_CA_WB)
+#endif
+
+#else /* no mmu */
+
+# define PAGE_NONE       __pgprot(0)
+# define PAGE_SHARED     __pgprot(0)
+# define PAGE_COPY       __pgprot(0)
+# define PAGE_READONLY   __pgprot(0)
+# define PAGE_KERNEL     __pgprot(0)
+
+#endif
+
+/*
+ * On certain configurations of Xtensa MMUs (eg. the initial Linux config),
+ * the MMU can't do page protection for execute, and considers that the same as
+ * read.  Also, write permissions may imply read permissions.
+ * What follows is the closest we can get by reasonable means..
+ * See linux/mm/mmap.c for protection_map[] array that uses these definitions.
+ */
+#define __P000	PAGE_NONE		/* private --- */
+#define __P001	PAGE_READONLY		/* private --r */
+#define __P010	PAGE_COPY		/* private -w- */
+#define __P011	PAGE_COPY		/* private -wr */
+#define __P100	PAGE_READONLY_EXEC	/* private x-- */
+#define __P101	PAGE_READONLY_EXEC	/* private x-r */
+#define __P110	PAGE_COPY_EXEC		/* private xw- */
+#define __P111	PAGE_COPY_EXEC		/* private xwr */
+
+#define __S000	PAGE_NONE		/* shared  --- */
+#define __S001	PAGE_READONLY		/* shared  --r */
+#define __S010	PAGE_SHARED		/* shared  -w- */
+#define __S011	PAGE_SHARED		/* shared  -wr */
+#define __S100	PAGE_READONLY_EXEC	/* shared  x-- */
+#define __S101	PAGE_READONLY_EXEC	/* shared  x-r */
+#define __S110	PAGE_SHARED_EXEC	/* shared  xw- */
+#define __S111	PAGE_SHARED_EXEC	/* shared  xwr */
+
+#ifndef __ASSEMBLY__
+
+#define pte_ERROR(e) \
+	printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
+#define pgd_ERROR(e) \
+	printk("%s:%d: bad pgd entry %08lx.\n", __FILE__, __LINE__, pgd_val(e))
+
+extern unsigned long empty_zero_page[1024];
+
+#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
+
+extern pgd_t swapper_pg_dir[PAGE_SIZE/sizeof(pgd_t)];
+
+/*
+ * The pmd contains the kernel virtual address of the pte page.
+ */
+#define pmd_page_vaddr(pmd) ((unsigned long)(pmd_val(pmd) & PAGE_MASK))
+#define pmd_page(pmd) virt_to_page(pmd_val(pmd))
+
+/*
+ * pte status.
+ */
+#define pte_none(pte)	 (pte_val(pte) == _PAGE_INVALID)
+#define pte_present(pte)						\
+	(((pte_val(pte) & _PAGE_CA_MASK) != _PAGE_INVALID)		\
+	 || ((pte_val(pte) & _PAGE_PROTNONE) == _PAGE_PROTNONE))
+#define pte_clear(mm,addr,ptep)						\
+	do { update_pte(ptep, __pte(_PAGE_INVALID)); } while(0)
+
+#define pmd_none(pmd)	 (!pmd_val(pmd))
+#define pmd_present(pmd) (pmd_val(pmd) & PAGE_MASK)
+#define pmd_bad(pmd)	 (pmd_val(pmd) & ~PAGE_MASK)
+#define pmd_clear(pmdp)	 do { set_pmd(pmdp, __pmd(0)); } while (0)
+
+static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_WRITABLE; }
+static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
+static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
+static inline int pte_file(pte_t pte)  { return pte_val(pte) & _PAGE_FILE; }
+static inline int pte_special(pte_t pte) { return 0; }
+
+static inline pte_t pte_wrprotect(pte_t pte)	
+	{ pte_val(pte) &= ~(_PAGE_WRITABLE | _PAGE_HW_WRITE); return pte; }
+static inline pte_t pte_mkclean(pte_t pte)
+	{ pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HW_WRITE); return pte; }
+static inline pte_t pte_mkold(pte_t pte)
+	{ pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkdirty(pte_t pte)
+	{ pte_val(pte) |= _PAGE_DIRTY; return pte; }
+static inline pte_t pte_mkyoung(pte_t pte)
+	{ pte_val(pte) |= _PAGE_ACCESSED; return pte; }
+static inline pte_t pte_mkwrite(pte_t pte)
+	{ pte_val(pte) |= _PAGE_WRITABLE; return pte; }
+static inline pte_t pte_mkspecial(pte_t pte)
+	{ return pte; }
+
+/*
+ * Conversion functions: convert a page and protection to a page entry,
+ * and a page entry and page directory to the page they refer to.
+ */
+
+#define pte_pfn(pte)		(pte_val(pte) >> PAGE_SHIFT)
+#define pte_same(a,b)		(pte_val(a) == pte_val(b))
+#define pte_page(x)		pfn_to_page(pte_pfn(x))
+#define pfn_pte(pfn, prot)	__pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
+#define mk_pte(page, prot)	pfn_pte(page_to_pfn(page), prot)
+
+static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
+{
+	return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
+}
+
+/*
+ * Certain architectures need to do special things when pte's
+ * within a page table are directly modified.  Thus, the following
+ * hook is made available.
+ */
+static inline void update_pte(pte_t *ptep, pte_t pteval)
+{
+	*ptep = pteval;
+#if (DCACHE_WAY_SIZE > PAGE_SIZE) && XCHAL_DCACHE_IS_WRITEBACK
+	__asm__ __volatile__ ("dhwb %0, 0" :: "a" (ptep));
+#endif
+
+}
+
+struct mm_struct;
+
+static inline void
+set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pteval)
+{
+	update_pte(ptep, pteval);
+}
+
+
+static inline void
+set_pmd(pmd_t *pmdp, pmd_t pmdval)
+{
+	*pmdp = pmdval;
+}
+
+struct vm_area_struct;
+
+static inline int
+ptep_test_and_clear_young(struct vm_area_struct *vma, unsigned long addr,
+    			  pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	if (!pte_young(pte))
+		return 0;
+	update_pte(ptep, pte_mkold(pte));
+	return 1;
+}
+
+static inline pte_t
+ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+	pte_t pte = *ptep;
+	pte_clear(mm, addr, ptep);
+	return pte;
+}
+
+static inline void
+ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+{
+  	pte_t pte = *ptep;
+  	update_pte(ptep, pte_wrprotect(pte));
+}
+
+/* to find an entry in a kernel page-table-directory */
+#define pgd_offset_k(address)	pgd_offset(&init_mm, address)
+
+/* to find an entry in a page-table-directory */
+#define pgd_offset(mm,address)	((mm)->pgd + pgd_index(address))
+
+#define pgd_index(address)	((address) >> PGDIR_SHIFT)
+
+/* Find an entry in the second-level page table.. */
+#define pmd_offset(dir,address) ((pmd_t*)(dir))
+
+/* Find an entry in the third-level page table.. */
+#define pte_index(address)	(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define pte_offset_kernel(dir,addr) 					\
+	((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
+#define pte_offset_map(dir,addr)	pte_offset_kernel((dir),(addr))
+#define pte_offset_map_nested(dir,addr)	pte_offset_kernel((dir),(addr))
+
+#define pte_unmap(pte)		do { } while (0)
+#define pte_unmap_nested(pte)	do { } while (0)
+
+
+/*
+ * Encode and decode a swap entry.
+ *
+ * Format of swap pte:
+ *  bit	   0	   MBZ
+ *  bit	   1	   page-file (must be zero)
+ *  bits   2 -  3  page hw access mode (must be 11: _PAGE_INVALID)
+ *  bits   4 -  5  ring protection (must be 01: _PAGE_USER)
+ *  bits   6 - 10  swap type (5 bits -> 32 types)
+ *  bits  11 - 31  swap offset / PAGE_SIZE (21 bits -> 8GB)
+ 
+ * Format of file pte:
+ *  bit	   0	   MBZ
+ *  bit	   1	   page-file (must be one: _PAGE_FILE)
+ *  bits   2 -  3  page hw access mode (must be 11: _PAGE_INVALID)
+ *  bits   4 -  5  ring protection (must be 01: _PAGE_USER)
+ *  bits   6 - 31  file offset / PAGE_SIZE
+ */
+
+#define __swp_type(entry)	(((entry).val >> 6) & 0x1f)
+#define __swp_offset(entry)	((entry).val >> 11)
+#define __swp_entry(type,offs)	\
+	((swp_entry_t) {((type) << 6) | ((offs) << 11) | _PAGE_INVALID})
+#define __pte_to_swp_entry(pte)	((swp_entry_t) { pte_val(pte) })
+#define __swp_entry_to_pte(x)	((pte_t) { (x).val })
+
+#define PTE_FILE_MAX_BITS	28
+#define pte_to_pgoff(pte)	(pte_val(pte) >> 4)
+#define pgoff_to_pte(off)	\
+	((pte_t) { ((off) << 4) | _PAGE_INVALID | _PAGE_FILE })
+
+#endif /*  !defined (__ASSEMBLY__) */
+
+
+#ifdef __ASSEMBLY__
+
+/* Assembly macro _PGD_INDEX is the same as C pgd_index(unsigned long),
+ *                _PGD_OFFSET as C pgd_offset(struct mm_struct*, unsigned long),
+ *                _PMD_OFFSET as C pmd_offset(pgd_t*, unsigned long)
+ *                _PTE_OFFSET as C pte_offset(pmd_t*, unsigned long)
+ *
+ * Note: We require an additional temporary register which can be the same as
+ *       the register that holds the address.
+ *
+ * ((pte_t*) ((unsigned long)(pmd_val(*pmd) & PAGE_MASK)) + pte_index(addr))
+ *
+ */
+#define _PGD_INDEX(rt,rs)	extui	rt, rs, PGDIR_SHIFT, 32-PGDIR_SHIFT
+#define _PTE_INDEX(rt,rs)	extui	rt, rs, PAGE_SHIFT, PTRS_PER_PTE_SHIFT
+
+#define _PGD_OFFSET(mm,adr,tmp)		l32i	mm, mm, MM_PGD;		\
+					_PGD_INDEX(tmp, adr);		\
+					addx4	mm, tmp, mm
+
+#define _PTE_OFFSET(pmd,adr,tmp)	_PTE_INDEX(tmp, adr);		\
+					srli	pmd, pmd, PAGE_SHIFT;	\
+					slli	pmd, pmd, PAGE_SHIFT;	\
+					addx4	pmd, tmp, pmd
+
+#else
+
+extern void paging_init(void);
+
+#define kern_addr_valid(addr)	(1)
+
+extern  void update_mmu_cache(struct vm_area_struct * vma,
+			      unsigned long address, pte_t pte);
+
+/*
+ * remap a physical page `pfn' of size `size' with page protection `prot'
+ * into virtual address `from'
+ */
+
+#define io_remap_pfn_range(vma,from,pfn,size,prot) \
+                remap_pfn_range(vma, from, pfn, size, prot)
+
+
+extern void pgtable_cache_init(void);
+
+typedef pte_t *pte_addr_t;
+
+#endif /* !defined (__ASSEMBLY__) */
+
+#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
+#define __HAVE_ARCH_PTEP_GET_AND_CLEAR
+#define __HAVE_ARCH_PTEP_SET_WRPROTECT
+#define __HAVE_ARCH_PTEP_MKDIRTY
+#define __HAVE_ARCH_PTE_SAME
+
+#include <asm-generic/pgtable.h>
+
+#endif /* _XTENSA_PGTABLE_H */
diff --git a/arch/xtensa/include/asm/platform.h b/arch/xtensa/include/asm/platform.h
new file mode 100644
index 0000000..e3d5a48
--- /dev/null
+++ b/arch/xtensa/include/asm/platform.h
@@ -0,0 +1,89 @@
+/*
+ * Platform specific functions
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PLATFORM_H
+#define _XTENSA_PLATFORM_H
+
+#include <linux/types.h>
+#include <linux/pci.h>
+
+#include <asm/bootparam.h>
+
+/*
+ * platform_init is called before the mmu is initialized to give the
+ * platform a early hook-up. bp_tag_t is a list of configuration tags
+ * passed from the boot-loader.
+ */
+extern void platform_init(bp_tag_t*);
+
+/*
+ * platform_setup is called from setup_arch with a pointer to the command-line
+ * string.
+ */
+extern void platform_setup (char **);
+
+/*
+ * platform_init_irq is called from init_IRQ.
+ */
+extern void platform_init_irq (void);
+
+/*
+ * platform_restart is called to restart the system.
+ */
+extern void platform_restart (void);
+
+/*
+ * platform_halt is called to stop the system and halt.
+ */
+extern void platform_halt (void);
+
+/*
+ * platform_power_off is called to stop the system and power it off.
+ */
+extern void platform_power_off (void);
+
+/*
+ * platform_idle is called from the idle function.
+ */
+extern void platform_idle (void);
+
+/*
+ * platform_heartbeat is called every HZ
+ */
+extern void platform_heartbeat (void);
+
+/*
+ * platform_pcibios_init is called to allow the platform to setup the pci bus.
+ */
+extern void platform_pcibios_init (void);
+
+/*
+ * platform_pcibios_fixup allows to modify the PCI configuration.
+ */
+extern int platform_pcibios_fixup (void);
+
+/*
+ * platform_calibrate_ccount calibrates cpu clock freq (CONFIG_XTENSA_CALIBRATE)
+ */
+extern void platform_calibrate_ccount (void);
+
+/*
+ * platform_get_rtc_time returns RTC seconds (returns 0 for no error)
+ */
+extern int platform_get_rtc_time(time_t*);
+
+/*
+ * platform_set_rtc_time set RTC seconds (returns 0 for no error)
+ */
+extern int platform_set_rtc_time(time_t);
+
+
+#endif	/* _XTENSA_PLATFORM_H */
+
diff --git a/arch/xtensa/include/asm/poll.h b/arch/xtensa/include/asm/poll.h
new file mode 100644
index 0000000..9d2d599
--- /dev/null
+++ b/arch/xtensa/include/asm/poll.h
@@ -0,0 +1,20 @@
+/*
+ * include/asm-xtensa/poll.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_POLL_H
+#define _XTENSA_POLL_H
+
+#define POLLWRNORM	POLLOUT
+#define POLLWRBAND	0x0100
+#define POLLREMOVE	0x0800
+
+#include <asm-generic/poll.h>
+
+#endif /* _XTENSA_POLL_H */
diff --git a/arch/xtensa/include/asm/posix_types.h b/arch/xtensa/include/asm/posix_types.h
new file mode 100644
index 0000000..43f9dd1
--- /dev/null
+++ b/arch/xtensa/include/asm/posix_types.h
@@ -0,0 +1,122 @@
+/*
+ * include/asm-xtensa/posix_types.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Largely copied from include/asm-ppc/posix_types.h
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_POSIX_TYPES_H
+#define _XTENSA_POSIX_TYPES_H
+
+/*
+ * This file is generally used by user-level software, so you need to
+ * be a little careful about namespace pollution etc.  Also, we cannot
+ * assume GCC is being used.
+ */
+
+typedef unsigned long	__kernel_ino_t;
+typedef unsigned int	__kernel_mode_t;
+typedef unsigned long	__kernel_nlink_t;
+typedef long		__kernel_off_t;
+typedef int		__kernel_pid_t;
+typedef unsigned short	__kernel_ipc_pid_t;
+typedef unsigned int	__kernel_uid_t;
+typedef unsigned int	__kernel_gid_t;
+typedef unsigned int	__kernel_size_t;
+typedef int		__kernel_ssize_t;
+typedef long		__kernel_ptrdiff_t;
+typedef long		__kernel_time_t;
+typedef long		__kernel_suseconds_t;
+typedef long		__kernel_clock_t;
+typedef int		__kernel_timer_t;
+typedef int		__kernel_clockid_t;
+typedef int		__kernel_daddr_t;
+typedef char *		__kernel_caddr_t;
+typedef unsigned short	__kernel_uid16_t;
+typedef unsigned short	__kernel_gid16_t;
+typedef unsigned int	__kernel_uid32_t;
+typedef unsigned int	__kernel_gid32_t;
+
+typedef unsigned short	__kernel_old_uid_t;
+typedef unsigned short	__kernel_old_gid_t;
+typedef unsigned short	__kernel_old_dev_t;
+
+#ifdef __GNUC__
+typedef long long	__kernel_loff_t;
+#endif
+
+typedef struct {
+	int	val[2];
+} __kernel_fsid_t;
+
+#ifndef __GNUC__
+
+#define	__FD_SET(d, set)	((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
+#define	__FD_CLR(d, set)	((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
+#define	__FD_ISSET(d, set)	((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
+#define	__FD_ZERO(set)	\
+  ((void) memset ((void *) (set), 0, sizeof (__kernel_fd_set)))
+
+#else /* __GNUC__ */
+
+#if defined(__KERNEL__)
+/* With GNU C, use inline functions instead so args are evaluated only once: */
+
+#undef __FD_SET
+static __inline__ void __FD_SET(unsigned long fd, __kernel_fd_set *fdsetp)
+{
+	unsigned long _tmp = fd / __NFDBITS;
+	unsigned long _rem = fd % __NFDBITS;
+	fdsetp->fds_bits[_tmp] |= (1UL<<_rem);
+}
+
+#undef __FD_CLR
+static __inline__ void __FD_CLR(unsigned long fd, __kernel_fd_set *fdsetp)
+{
+	unsigned long _tmp = fd / __NFDBITS;
+	unsigned long _rem = fd % __NFDBITS;
+	fdsetp->fds_bits[_tmp] &= ~(1UL<<_rem);
+}
+
+#undef __FD_ISSET
+static __inline__ int __FD_ISSET(unsigned long fd, __kernel_fd_set *p)
+{
+	unsigned long _tmp = fd / __NFDBITS;
+	unsigned long _rem = fd % __NFDBITS;
+	return (p->fds_bits[_tmp] & (1UL<<_rem)) != 0;
+}
+
+/*
+ * This will unroll the loop for the normal constant case (8 ints,
+ * for a 256-bit fd_set)
+ */
+#undef __FD_ZERO
+static __inline__ void __FD_ZERO(__kernel_fd_set *p)
+{
+	unsigned int *tmp = (unsigned int *)p->fds_bits;
+	int i;
+
+	if (__builtin_constant_p(__FDSET_LONGS)) {
+		switch (__FDSET_LONGS) {
+			case 8:
+				tmp[0] = 0; tmp[1] = 0; tmp[2] = 0; tmp[3] = 0;
+				tmp[4] = 0; tmp[5] = 0; tmp[6] = 0; tmp[7] = 0;
+				return;
+		}
+	}
+	i = __FDSET_LONGS;
+	while (i) {
+		i--;
+		*tmp = 0;
+		tmp++;
+	}
+}
+
+#endif /* defined(__KERNEL__) */
+#endif /* __GNUC__ */
+#endif /* _XTENSA_POSIX_TYPES_H */
diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
new file mode 100644
index 0000000..07387d3
--- /dev/null
+++ b/arch/xtensa/include/asm/processor.h
@@ -0,0 +1,193 @@
+/*
+ * include/asm-xtensa/processor.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PROCESSOR_H
+#define _XTENSA_PROCESSOR_H
+
+#include <variant/core.h>
+#include <asm/coprocessor.h>
+
+#include <linux/compiler.h>
+#include <asm/ptrace.h>
+#include <asm/types.h>
+#include <asm/regs.h>
+
+/* Assertions. */
+
+#if (XCHAL_HAVE_WINDOWED != 1)
+# error Linux requires the Xtensa Windowed Registers Option.
+#endif
+
+/*
+ * User space process size: 1 GB.
+ * Windowed call ABI requires caller and callee to be located within the same
+ * 1 GB region. The C compiler places trampoline code on the stack for sources
+ * that take the address of a nested C function (a feature used by glibc), so
+ * the 1 GB requirement applies to the stack as well.
+ */
+
+#define TASK_SIZE	__XTENSA_UL_CONST(0x40000000)
+#define STACK_TOP	TASK_SIZE
+#define STACK_TOP_MAX	STACK_TOP
+
+/*
+ * General exception cause assigned to debug exceptions. Debug exceptions go
+ * to their own vector, rather than the general exception vectors (user,
+ * kernel, double); and their specific causes are reported via DEBUGCAUSE
+ * rather than EXCCAUSE.  However it is sometimes convenient to redirect debug
+ * exceptions to the general exception mechanism.  To do this, an otherwise
+ * unused EXCCAUSE value was assigned to debug exceptions for this purpose.
+ */
+
+#define EXCCAUSE_MAPPED_DEBUG	63
+
+/*
+ * We use DEPC also as a flag to distinguish between double and regular
+ * exceptions. For performance reasons, DEPC might contain the value of
+ * EXCCAUSE for regular exceptions, so we use this definition to mark a
+ * valid double exception address.
+ * (Note: We use it in bgeui, so it should be 64, 128, or 256)
+ */
+
+#define VALID_DOUBLE_EXCEPTION_ADDRESS	64
+
+/* LOCKLEVEL defines the interrupt level that masks all
+ * general-purpose interrupts.
+ */
+#define LOCKLEVEL 1
+
+/* WSBITS and WBBITS are the width of the WINDOWSTART and WINDOWBASE
+ * registers
+ */
+#define WSBITS  (XCHAL_NUM_AREGS / 4)      /* width of WINDOWSTART in bits */
+#define WBBITS  (XCHAL_NUM_AREGS_LOG2 - 2) /* width of WINDOWBASE in bits */
+
+#ifndef __ASSEMBLY__
+
+/* Build a valid return address for the specified call winsize.
+ * winsize must be 1 (call4), 2 (call8), or 3 (call12)
+ */
+#define MAKE_RA_FOR_CALL(ra,ws)   (((ra) & 0x3fffffff) | (ws) << 30)
+
+/* Convert return address to a valid pc
+ * Note: We assume that the stack pointer is in the same 1GB ranges as the ra
+ */
+#define MAKE_PC_FROM_RA(ra,sp)    (((ra) & 0x3fffffff) | ((sp) & 0xc0000000))
+
+typedef struct {
+    unsigned long seg;
+} mm_segment_t;
+
+struct thread_struct {
+
+	/* kernel's return address and stack pointer for context switching */
+	unsigned long ra; /* kernel's a0: return address and window call size */
+	unsigned long sp; /* kernel's a1: stack pointer */
+
+	mm_segment_t current_ds;    /* see uaccess.h for example uses */
+
+	/* struct xtensa_cpuinfo info; */
+
+	unsigned long bad_vaddr; /* last user fault */
+	unsigned long bad_uaddr; /* last kernel fault accessing user space */
+	unsigned long error_code;
+
+	unsigned long ibreak[XCHAL_NUM_IBREAK];
+	unsigned long dbreaka[XCHAL_NUM_DBREAK];
+	unsigned long dbreakc[XCHAL_NUM_DBREAK];
+
+	/* Make structure 16 bytes aligned. */
+	int align[0] __attribute__ ((aligned(16)));
+};
+
+
+/*
+ * Default implementation of macro that returns current
+ * instruction pointer ("program counter").
+ */
+#define current_text_addr()  ({ __label__ _l; _l: &&_l;})
+
+
+/* This decides where the kernel will search for a free chunk of vm
+ * space during mmap's.
+ */
+#define TASK_UNMAPPED_BASE	(TASK_SIZE / 2)
+
+#define INIT_THREAD  \
+{									\
+	ra:		0, 						\
+	sp:		sizeof(init_stack) + (long) &init_stack,	\
+	current_ds:	{0},						\
+	/*info:		{0}, */						\
+	bad_vaddr:	0,						\
+	bad_uaddr:	0,						\
+	error_code:	0,						\
+}
+
+
+/*
+ * Do necessary setup to start up a newly executed thread.
+ * Note: We set-up ps as if we did a call4 to the new pc.
+ *       set_thread_state in signal.c depends on it.
+ */
+#define USER_PS_VALUE ((1 << PS_WOE_BIT) |				\
+                       (1 << PS_CALLINC_SHIFT) |			\
+                       (USER_RING << PS_RING_SHIFT) |			\
+                       (1 << PS_UM_BIT) |				\
+                       (1 << PS_EXCM_BIT))
+
+/* Clearing a0 terminates the backtrace. */
+#define start_thread(regs, new_pc, new_sp) \
+	regs->pc = new_pc; \
+	regs->ps = USER_PS_VALUE; \
+	regs->areg[1] = new_sp; \
+	regs->areg[0] = 0; \
+	regs->wmask = 1; \
+	regs->depc = 0; \
+	regs->windowbase = 0; \
+	regs->windowstart = 1;
+
+/* Forward declaration */
+struct task_struct;
+struct mm_struct;
+
+/* Free all resources held by a thread. */
+#define release_thread(thread) do { } while(0)
+
+/* Prepare to copy thread state - unlazy all lazy status */
+extern void prepare_to_copy(struct task_struct*);
+
+/* Create a kernel thread without removing it from tasklists */
+extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
+
+/* Copy and release all segment info associated with a VM */
+#define copy_segments(p, mm)	do { } while(0)
+#define release_segments(mm)	do { } while(0)
+#define forget_segments()	do { } while (0)
+
+#define thread_saved_pc(tsk)	(task_pt_regs(tsk)->pc)
+
+extern unsigned long get_wchan(struct task_struct *p);
+
+#define KSTK_EIP(tsk)		(task_pt_regs(tsk)->pc)
+#define KSTK_ESP(tsk)		(task_pt_regs(tsk)->areg[1])
+
+#define cpu_relax()  barrier()
+
+/* Special register access. */
+
+#define WSR(v,sr) __asm__ __volatile__ ("wsr %0,"__stringify(sr) :: "a"(v));
+#define RSR(v,sr) __asm__ __volatile__ ("rsr %0,"__stringify(sr) : "=a"(v));
+
+#define set_sr(x,sr) ({unsigned int v=(unsigned int)x; WSR(v,sr);})
+#define get_sr(sr) ({unsigned int v; RSR(v,sr); v; })
+
+#endif	/* __ASSEMBLY__ */
+#endif	/* _XTENSA_PROCESSOR_H */
diff --git a/arch/xtensa/include/asm/ptrace.h b/arch/xtensa/include/asm/ptrace.h
new file mode 100644
index 0000000..905e1e6
--- /dev/null
+++ b/arch/xtensa/include/asm/ptrace.h
@@ -0,0 +1,135 @@
+/*
+ * include/asm-xtensa/ptrace.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_PTRACE_H
+#define _XTENSA_PTRACE_H
+
+/*
+ * Kernel stack
+ *
+ * 		+-----------------------+  -------- STACK_SIZE
+ * 		|     register file     |  |
+ * 		+-----------------------+  |
+ * 		|    struct pt_regs     |  |
+ * 		+-----------------------+  | ------ PT_REGS_OFFSET
+ * double 	:  16 bytes spill area  :  |  ^
+ * excetion 	:- - - - - - - - - - - -:  |  |
+ * frame	:    struct pt_regs     :  |  |
+ * 		:- - - - - - - - - - - -:  |  |
+ * 		|                       |  |  |
+ * 		|     memory stack      |  |  |
+ * 		|                       |  |  |
+ * 		~                       ~  ~  ~
+ * 		~                       ~  ~  ~
+ * 		|                       |  |  |
+ * 		|                       |  |  |
+ * 		+-----------------------+  |  | --- STACK_BIAS
+ * 		|  struct task_struct   |  |  |  ^
+ *  current --> +-----------------------+  |  |  |
+ * 		|  struct thread_info   |  |  |  |
+ *		+-----------------------+ --------
+ */
+
+#define KERNEL_STACK_SIZE (2 * PAGE_SIZE)
+
+/*  Offsets for exception_handlers[] (3 x 64-entries x 4-byte tables). */
+
+#define EXC_TABLE_KSTK		0x004	/* Kernel Stack */
+#define EXC_TABLE_DOUBLE_SAVE	0x008	/* Double exception save area for a0 */
+#define EXC_TABLE_FIXUP		0x00c	/* Fixup handler */
+#define EXC_TABLE_PARAM		0x010	/* For passing a parameter to fixup */
+#define EXC_TABLE_SYSCALL_SAVE	0x014	/* For fast syscall handler */
+#define EXC_TABLE_FAST_USER	0x100	/* Fast user exception handler */
+#define EXC_TABLE_FAST_KERNEL	0x200	/* Fast kernel exception handler */
+#define EXC_TABLE_DEFAULT	0x300	/* Default C-Handler */
+#define EXC_TABLE_SIZE		0x400
+
+/* Registers used by strace */
+
+#define REG_A_BASE	0x0000
+#define REG_AR_BASE	0x0100
+#define REG_PC		0x0020
+#define REG_PS		0x02e6
+#define REG_WB		0x0248
+#define REG_WS		0x0249
+#define REG_LBEG	0x0200
+#define REG_LEND	0x0201
+#define REG_LCOUNT	0x0202
+#define REG_SAR		0x0203
+
+#define SYSCALL_NR	0x00ff
+
+/* Other PTRACE_ values defined in <linux/ptrace.h> using values 0-9,16,17,24 */
+
+#define PTRACE_GETREGS		12
+#define PTRACE_SETREGS		13
+#define PTRACE_GETXTREGS	18
+#define PTRACE_SETXTREGS	19
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+
+/*
+ * This struct defines the way the registers are stored on the
+ * kernel stack during a system call or other kernel entry.
+ */
+struct pt_regs {
+	unsigned long pc;		/*   4 */
+	unsigned long ps;		/*   8 */
+	unsigned long depc;		/*  12 */
+	unsigned long exccause;		/*  16 */
+	unsigned long excvaddr;		/*  20 */
+	unsigned long debugcause;	/*  24 */
+	unsigned long wmask;		/*  28 */
+	unsigned long lbeg;		/*  32 */
+	unsigned long lend;		/*  36 */
+	unsigned long lcount;		/*  40 */
+	unsigned long sar;		/*  44 */
+	unsigned long windowbase;	/*  48 */
+	unsigned long windowstart;	/*  52 */
+	unsigned long syscall;		/*  56 */
+	unsigned long icountlevel;	/*  60 */
+	int reserved[1];		/*  64 */
+
+	/* Additional configurable registers that are used by the compiler. */
+	xtregs_opt_t xtregs_opt;
+
+	/* Make sure the areg field is 16 bytes aligned. */
+	int align[0] __attribute__ ((aligned(16)));
+
+	/* current register frame.
+	 * Note: The ESF for kernel exceptions ends after 16 registers!
+	 */
+	unsigned long areg[16];		/* 128 (64) */
+};
+
+#include <variant/core.h>
+
+# define task_pt_regs(tsk) ((struct pt_regs*) \
+  (task_stack_page(tsk) + KERNEL_STACK_SIZE - (XCHAL_NUM_AREGS-16)*4) - 1)
+# define user_mode(regs) (((regs)->ps & 0x00000020)!=0)
+# define instruction_pointer(regs) ((regs)->pc)
+extern void show_regs(struct pt_regs *);
+
+# ifndef CONFIG_SMP
+#  define profile_pc(regs) instruction_pointer(regs)
+# endif
+
+#else	/* __ASSEMBLY__ */
+
+# include <asm/asm-offsets.h>
+#define PT_REGS_OFFSET	  (KERNEL_STACK_SIZE - PT_USER_SIZE)
+
+#endif	/* !__ASSEMBLY__ */
+
+#endif  /* __KERNEL__ */
+
+#endif	/* _XTENSA_PTRACE_H */
diff --git a/arch/xtensa/include/asm/regs.h b/arch/xtensa/include/asm/regs.h
new file mode 100644
index 0000000..d4baed2
--- /dev/null
+++ b/arch/xtensa/include/asm/regs.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (c) 2006 Tensilica, Inc.  All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2.1 of the GNU Lesser General Public
+ * License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * Further, this software is distributed without any warranty that it is
+ * free of the rightful claim of any third person regarding infringement
+ * or the like.  Any license provided herein, whether implied or
+ * otherwise, applies only to this software file.  Patent licenses, if
+ * any, provided herein do not apply to combinations of this program with
+ * other software, or any other product whatsoever.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
+ * USA.
+ */
+
+#ifndef _XTENSA_REGS_H
+#define _XTENSA_REGS_H
+
+/*  Special registers.  */
+
+#define LBEG		0
+#define LEND		1
+#define LCOUNT		2
+#define SAR		3
+#define BR		4
+#define SCOMPARE1	12
+#define ACCHI		16
+#define ACCLO		17
+#define MR		32
+#define WINDOWBASE	72
+#define WINDOWSTART	73
+#define PTEVADDR	83
+#define RASID		90
+#define ITLBCFG		91
+#define DTLBCFG		92
+#define IBREAKENABLE	96
+#define DDR		104
+#define IBREAKA		128
+#define DBREAKA		144
+#define DBREAKC		160
+#define EPC		176
+#define EPC_1		177
+#define DEPC		192
+#define EPS		192
+#define EPS_1		193
+#define EXCSAVE		208
+#define EXCSAVE_1	209
+#define INTERRUPT	226
+#define INTENABLE	228
+#define PS		230
+#define THREADPTR	231
+#define EXCCAUSE	232
+#define DEBUGCAUSE	233
+#define CCOUNT		234
+#define PRID		235
+#define ICOUNT		236
+#define ICOUNTLEVEL	237
+#define EXCVADDR	238
+#define CCOMPARE	240
+#define MISC		244
+
+/*  Special names for read-only and write-only interrupt registers.  */
+
+#define INTREAD		226
+#define INTSET		226
+#define INTCLEAR	227
+
+/*  EXCCAUSE register fields  */
+
+#define EXCCAUSE_EXCCAUSE_SHIFT	0
+#define EXCCAUSE_EXCCAUSE_MASK	0x3F
+
+#define EXCCAUSE_ILLEGAL_INSTRUCTION		0
+#define EXCCAUSE_SYSTEM_CALL			1
+#define EXCCAUSE_INSTRUCTION_FETCH_ERROR	2
+#define EXCCAUSE_LOAD_STORE_ERROR		3
+#define EXCCAUSE_LEVEL1_INTERRUPT		4
+#define EXCCAUSE_ALLOCA				5
+#define EXCCAUSE_INTEGER_DIVIDE_BY_ZERO		6
+#define EXCCAUSE_SPECULATION			7
+#define EXCCAUSE_PRIVILEGED			8
+#define EXCCAUSE_UNALIGNED			9
+#define EXCCAUSE_ITLB_MISS			16
+#define EXCCAUSE_ITLB_MULTIHIT			17
+#define EXCCAUSE_ITLB_PRIVILEGE			18
+#define EXCCAUSE_ITLB_SIZE_RESTRICTION		19
+#define EXCCAUSE_FETCH_CACHE_ATTRIBUTE		20
+#define EXCCAUSE_DTLB_MISS			24
+#define EXCCAUSE_DTLB_MULTIHIT			25
+#define EXCCAUSE_DTLB_PRIVILEGE			26
+#define EXCCAUSE_DTLB_SIZE_RESTRICTION		27
+#define EXCCAUSE_LOAD_CACHE_ATTRIBUTE		28
+#define EXCCAUSE_STORE_CACHE_ATTRIBUTE		29
+#define EXCCAUSE_COPROCESSOR0_DISABLED		32
+#define EXCCAUSE_COPROCESSOR1_DISABLED		33
+#define EXCCAUSE_COPROCESSOR2_DISABLED		34
+#define EXCCAUSE_COPROCESSOR3_DISABLED		35
+#define EXCCAUSE_COPROCESSOR4_DISABLED		36
+#define EXCCAUSE_COPROCESSOR5_DISABLED		37
+#define EXCCAUSE_COPROCESSOR6_DISABLED		38
+#define EXCCAUSE_COPROCESSOR7_DISABLED		39
+
+/*  PS register fields.  */
+
+#define PS_WOE_BIT		18
+#define PS_CALLINC_SHIFT	16
+#define PS_CALLINC_MASK		0x00030000
+#define PS_OWB_SHIFT		8
+#define PS_OWB_MASK		0x00000F00
+#define PS_RING_SHIFT		6
+#define PS_RING_MASK		0x000000C0
+#define PS_UM_BIT		5
+#define PS_EXCM_BIT		4
+#define PS_INTLEVEL_SHIFT	0
+#define PS_INTLEVEL_MASK	0x0000000F
+
+/*  DBREAKCn register fields.  */
+
+#define DBREAKC_MASK_BIT		0
+#define DBREAKC_MASK_MASK		0x0000003F
+#define DBREAKC_LOAD_BIT		30
+#define DBREAKC_LOAD_MASK		0x40000000
+#define DBREAKC_STOR_BIT		31
+#define DBREAKC_STOR_MASK		0x80000000
+
+/*  DEBUGCAUSE register fields.  */
+
+#define DEBUGCAUSE_DEBUGINT_BIT		5	/* External debug interrupt */
+#define DEBUGCAUSE_BREAKN_BIT		4	/* BREAK.N instruction */
+#define DEBUGCAUSE_BREAK_BIT		3	/* BREAK instruction */
+#define DEBUGCAUSE_DBREAK_BIT		2	/* DBREAK match */
+#define DEBUGCAUSE_IBREAK_BIT		1	/* IBREAK match */
+#define DEBUGCAUSE_ICOUNT_BIT		0	/* ICOUNT would incr. to zero */
+
+#endif /* _XTENSA_SPECREG_H */
+
diff --git a/arch/xtensa/include/asm/resource.h b/arch/xtensa/include/asm/resource.h
new file mode 100644
index 0000000..17b5ab3
--- /dev/null
+++ b/arch/xtensa/include/asm/resource.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/resource.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RESOURCE_H
+#define _XTENSA_RESOURCE_H
+
+#include <asm-generic/resource.h>
+
+#endif	/* _XTENSA_RESOURCE_H */
diff --git a/arch/xtensa/include/asm/rmap.h b/arch/xtensa/include/asm/rmap.h
new file mode 100644
index 0000000..649588b
--- /dev/null
+++ b/arch/xtensa/include/asm/rmap.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/rmap.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RMAP_H
+#define _XTENSA_RMAP_H
+
+#include <asm-generic/rmap.h>
+
+#endif
diff --git a/arch/xtensa/include/asm/rwsem.h b/arch/xtensa/include/asm/rwsem.h
new file mode 100644
index 0000000..e39edf5
--- /dev/null
+++ b/arch/xtensa/include/asm/rwsem.h
@@ -0,0 +1,168 @@
+/*
+ * include/asm-xtensa/rwsem.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Largely copied from include/asm-ppc/rwsem.h
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_RWSEM_H
+#define _XTENSA_RWSEM_H
+
+#ifndef _LINUX_RWSEM_H
+#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
+#endif
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+#include <asm/system.h>
+
+/*
+ * the semaphore definition
+ */
+struct rw_semaphore {
+	signed long		count;
+#define RWSEM_UNLOCKED_VALUE		0x00000000
+#define RWSEM_ACTIVE_BIAS		0x00000001
+#define RWSEM_ACTIVE_MASK		0x0000ffff
+#define RWSEM_WAITING_BIAS		(-0x00010000)
+#define RWSEM_ACTIVE_READ_BIAS		RWSEM_ACTIVE_BIAS
+#define RWSEM_ACTIVE_WRITE_BIAS		(RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
+	spinlock_t		wait_lock;
+	struct list_head	wait_list;
+};
+
+#define __RWSEM_INITIALIZER(name) \
+	{ RWSEM_UNLOCKED_VALUE, SPIN_LOCK_UNLOCKED, \
+	  LIST_HEAD_INIT((name).wait_list) }
+
+#define DECLARE_RWSEM(name)		\
+	struct rw_semaphore name = __RWSEM_INITIALIZER(name)
+
+extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
+
+static inline void init_rwsem(struct rw_semaphore *sem)
+{
+	sem->count = RWSEM_UNLOCKED_VALUE;
+	spin_lock_init(&sem->wait_lock);
+	INIT_LIST_HEAD(&sem->wait_list);
+}
+
+/*
+ * lock for reading
+ */
+static inline void __down_read(struct rw_semaphore *sem)
+{
+	if (atomic_add_return(1,(atomic_t *)(&sem->count)) > 0)
+		smp_wmb();
+	else
+		rwsem_down_read_failed(sem);
+}
+
+static inline int __down_read_trylock(struct rw_semaphore *sem)
+{
+	int tmp;
+
+	while ((tmp = sem->count) >= 0) {
+		if (tmp == cmpxchg(&sem->count, tmp,
+				   tmp + RWSEM_ACTIVE_READ_BIAS)) {
+			smp_wmb();
+			return 1;
+		}
+	}
+	return 0;
+}
+
+/*
+ * lock for writing
+ */
+static inline void __down_write(struct rw_semaphore *sem)
+{
+	int tmp;
+
+	tmp = atomic_add_return(RWSEM_ACTIVE_WRITE_BIAS,
+				(atomic_t *)(&sem->count));
+	if (tmp == RWSEM_ACTIVE_WRITE_BIAS)
+		smp_wmb();
+	else
+		rwsem_down_write_failed(sem);
+}
+
+static inline int __down_write_trylock(struct rw_semaphore *sem)
+{
+	int tmp;
+
+	tmp = cmpxchg(&sem->count, RWSEM_UNLOCKED_VALUE,
+		      RWSEM_ACTIVE_WRITE_BIAS);
+	smp_wmb();
+	return tmp == RWSEM_UNLOCKED_VALUE;
+}
+
+/*
+ * unlock after reading
+ */
+static inline void __up_read(struct rw_semaphore *sem)
+{
+	int tmp;
+
+	smp_wmb();
+	tmp = atomic_sub_return(1,(atomic_t *)(&sem->count));
+	if (tmp < -1 && (tmp & RWSEM_ACTIVE_MASK) == 0)
+		rwsem_wake(sem);
+}
+
+/*
+ * unlock after writing
+ */
+static inline void __up_write(struct rw_semaphore *sem)
+{
+	smp_wmb();
+	if (atomic_sub_return(RWSEM_ACTIVE_WRITE_BIAS,
+			      (atomic_t *)(&sem->count)) < 0)
+		rwsem_wake(sem);
+}
+
+/*
+ * implement atomic add functionality
+ */
+static inline void rwsem_atomic_add(int delta, struct rw_semaphore *sem)
+{
+	atomic_add(delta, (atomic_t *)(&sem->count));
+}
+
+/*
+ * downgrade write lock to read lock
+ */
+static inline void __downgrade_write(struct rw_semaphore *sem)
+{
+	int tmp;
+
+	smp_wmb();
+	tmp = atomic_add_return(-RWSEM_WAITING_BIAS, (atomic_t *)(&sem->count));
+	if (tmp < 0)
+		rwsem_downgrade_wake(sem);
+}
+
+/*
+ * implement exchange and add functionality
+ */
+static inline int rwsem_atomic_update(int delta, struct rw_semaphore *sem)
+{
+	smp_mb();
+	return atomic_add_return(delta, (atomic_t *)(&sem->count));
+}
+
+static inline int rwsem_is_locked(struct rw_semaphore *sem)
+{
+	return (sem->count != 0);
+}
+
+#endif	/* _XTENSA_RWSEM_H */
diff --git a/arch/xtensa/include/asm/scatterlist.h b/arch/xtensa/include/asm/scatterlist.h
new file mode 100644
index 0000000..810080b
--- /dev/null
+++ b/arch/xtensa/include/asm/scatterlist.h
@@ -0,0 +1,39 @@
+/*
+ * include/asm-xtensa/scatterlist.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SCATTERLIST_H
+#define _XTENSA_SCATTERLIST_H
+
+#include <asm/types.h>
+
+struct scatterlist {
+#ifdef CONFIG_DEBUG_SG
+	unsigned long	sg_magic;
+#endif
+	unsigned long	page_link;
+	unsigned int	offset;
+	dma_addr_t	dma_address;
+	unsigned int	length;
+};
+
+/*
+ * These macros should be used after a pci_map_sg call has been done
+ * to get bus addresses of each of the SG entries and their lengths.
+ * You should only work with the number of sg entries pci_map_sg
+ * returns, or alternatively stop on the first sg_dma_len(sg) which
+ * is 0.
+ */
+#define sg_dma_address(sg)      ((sg)->dma_address)
+#define sg_dma_len(sg)          ((sg)->length)
+
+
+#define ISA_DMA_THRESHOLD (~0UL)
+
+#endif	/* _XTENSA_SCATTERLIST_H */
diff --git a/arch/xtensa/include/asm/sections.h b/arch/xtensa/include/asm/sections.h
new file mode 100644
index 0000000..40b5191
--- /dev/null
+++ b/arch/xtensa/include/asm/sections.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/sections.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SECTIONS_H
+#define _XTENSA_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif	/* _XTENSA_SECTIONS_H */
diff --git a/arch/xtensa/include/asm/segment.h b/arch/xtensa/include/asm/segment.h
new file mode 100644
index 0000000..a2eb547
--- /dev/null
+++ b/arch/xtensa/include/asm/segment.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/segment.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SEGMENT_H
+#define _XTENSA_SEGMENT_H
+
+#include <asm/uaccess.h>
+
+#endif	/* _XTENSA_SEGEMENT_H */
diff --git a/arch/xtensa/include/asm/sembuf.h b/arch/xtensa/include/asm/sembuf.h
new file mode 100644
index 0000000..c158704
--- /dev/null
+++ b/arch/xtensa/include/asm/sembuf.h
@@ -0,0 +1,44 @@
+/*
+ * include/asm-xtensa/sembuf.h
+ *
+ * The semid64_ds structure for Xtensa architecture.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ *
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ */
+
+#ifndef _XTENSA_SEMBUF_H
+#define _XTENSA_SEMBUF_H
+
+#include <asm/byteorder.h>
+
+struct semid64_ds {
+	struct ipc64_perm sem_perm;		/* permissions .. see ipc.h */
+#ifdef __XTENSA_EL__
+	__kernel_time_t	sem_otime;		/* last semop time */
+	unsigned long	__unused1;
+	__kernel_time_t	sem_ctime;		/* last change time */
+	unsigned long	__unused2;
+#else
+	unsigned long	__unused1;
+	__kernel_time_t	sem_otime;		/* last semop time */
+	unsigned long	__unused2;
+	__kernel_time_t	sem_ctime;		/* last change time */
+#endif
+	unsigned long	sem_nsems;		/* no. of semaphores in array */
+	unsigned long	__unused3;
+	unsigned long	__unused4;
+};
+
+#endif /* __ASM_XTENSA_SEMBUF_H */
diff --git a/arch/xtensa/include/asm/serial.h b/arch/xtensa/include/asm/serial.h
new file mode 100644
index 0000000..a8a2493
--- /dev/null
+++ b/arch/xtensa/include/asm/serial.h
@@ -0,0 +1,18 @@
+/*
+ * include/asm-xtensa/serial.h
+ *
+ * Configuration details for 8250, 16450, 16550, etc. serial ports
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SERIAL_H
+#define _XTENSA_SERIAL_H
+
+#include <platform/serial.h>
+
+#endif	/* _XTENSA_SERIAL_H */
diff --git a/arch/xtensa/include/asm/setup.h b/arch/xtensa/include/asm/setup.h
new file mode 100644
index 0000000..e363652
--- /dev/null
+++ b/arch/xtensa/include/asm/setup.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/setup.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SETUP_H
+#define _XTENSA_SETUP_H
+
+#define COMMAND_LINE_SIZE	256
+
+#endif
diff --git a/arch/xtensa/include/asm/shmbuf.h b/arch/xtensa/include/asm/shmbuf.h
new file mode 100644
index 0000000..ad4b012
--- /dev/null
+++ b/arch/xtensa/include/asm/shmbuf.h
@@ -0,0 +1,71 @@
+/*
+ * include/asm-xtensa/shmbuf.h
+ *
+ * The shmid64_ds structure for Xtensa architecture.
+ * Note extra padding because this structure is passed back and forth
+ * between kernel and user space.
+ *
+ * Pad space is left for:
+ * - 64-bit time_t to solve y2038 problem
+ * - 2 miscellaneous 32-bit values
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SHMBUF_H
+#define _XTENSA_SHMBUF_H
+
+#if defined (__XTENSA_EL__)
+struct shmid64_ds {
+	struct ipc64_perm	shm_perm;	/* operation perms */
+	size_t			shm_segsz;	/* size of segment (bytes) */
+	__kernel_time_t		shm_atime;	/* last attach time */
+	unsigned long		__unused1;
+	__kernel_time_t		shm_dtime;	/* last detach time */
+	unsigned long		__unused2;
+	__kernel_time_t		shm_ctime;	/* last change time */
+	unsigned long		__unused3;
+	__kernel_pid_t		shm_cpid;	/* pid of creator */
+	__kernel_pid_t		shm_lpid;	/* pid of last operator */
+	unsigned long		shm_nattch;	/* no. of current attaches */
+	unsigned long		__unused4;
+	unsigned long		__unused5;
+};
+#elif defined (__XTENSA_EB__)
+struct shmid64_ds {
+	struct ipc64_perm	shm_perm;	/* operation perms */
+	size_t			shm_segsz;	/* size of segment (bytes) */
+	__kernel_time_t		shm_atime;	/* last attach time */
+	unsigned long		__unused1;
+	__kernel_time_t		shm_dtime;	/* last detach time */
+	unsigned long		__unused2;
+	__kernel_time_t		shm_ctime;	/* last change time */
+	unsigned long		__unused3;
+	__kernel_pid_t		shm_cpid;	/* pid of creator */
+	__kernel_pid_t		shm_lpid;	/* pid of last operator */
+	unsigned long		shm_nattch;	/* no. of current attaches */
+	unsigned long		__unused4;
+	unsigned long		__unused5;
+};
+#else
+# error endian order not defined
+#endif
+
+
+struct shminfo64 {
+	unsigned long	shmmax;
+	unsigned long	shmmin;
+	unsigned long	shmmni;
+	unsigned long	shmseg;
+	unsigned long	shmall;
+	unsigned long	__unused1;
+	unsigned long	__unused2;
+	unsigned long	__unused3;
+	unsigned long	__unused4;
+};
+
+#endif	/* _XTENSA_SHMBUF_H */
diff --git a/arch/xtensa/include/asm/shmparam.h b/arch/xtensa/include/asm/shmparam.h
new file mode 100644
index 0000000..c8cc16c
--- /dev/null
+++ b/arch/xtensa/include/asm/shmparam.h
@@ -0,0 +1,21 @@
+/*
+ * include/asm-xtensa/shmparam.h
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License.  See the file "COPYING" in the main directory of
+ * this archive for more details.
+ */
+
+#ifndef _XTENSA_SHMPARAM_H
+#define _XTENSA_SHMPARAM_H
+
+/*
+ * Xtensa can have variable size caches, and if
+ * the size of single way is larger than the page size,
+ * then we have to start worrying about cache aliasing
+ * problems.
+ */
+
+#define SHMLBA	((PAGE_SIZE > DCACHE_WAY_SIZE)? PAGE_SIZE : DCACHE_WAY_SIZE)
+
+#endif /* _XTENSA_SHMPARAM_H */
diff --git a/arch/xtensa/include/asm/sigcontext.h b/arch/xtensa/include/asm/sigcontext.h
new file mode 100644
index 0000000..03383af
--- /dev/null
+++ b/arch/xtensa/include/asm/sigcontext.h
@@ -0,0 +1,28 @@
+/*
+ * include/asm-xtensa/sigcontext.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGCONTEXT_H
+#define _XTENSA_SIGCONTEXT_H
+
+
+struct sigcontext {
+	unsigned long sc_pc;
+	unsigned long sc_ps;
+	unsigned long sc_lbeg;
+	unsigned long sc_lend;
+	unsigned long sc_lcount;
+	unsigned long sc_sar;
+	unsigned long sc_acclo;
+	unsigned long sc_acchi;
+	unsigned long sc_a[16];
+	void *sc_xtregs;
+};
+
+#endif /* _XTENSA_SIGCONTEXT_H */
diff --git a/arch/xtensa/include/asm/siginfo.h b/arch/xtensa/include/asm/siginfo.h
new file mode 100644
index 0000000..6916248
--- /dev/null
+++ b/arch/xtensa/include/asm/siginfo.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/siginfo.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGINFO_H
+#define _XTENSA_SIGINFO_H
+
+#include <asm-generic/siginfo.h>
+
+#endif	/* _XTENSA_SIGINFO_H */
diff --git a/arch/xtensa/include/asm/signal.h b/arch/xtensa/include/asm/signal.h
new file mode 100644
index 0000000..633ba73
--- /dev/null
+++ b/arch/xtensa/include/asm/signal.h
@@ -0,0 +1,172 @@
+/*
+ * include/asm-xtensa/signal.h
+ *
+ * Swiped from SH.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SIGNAL_H
+#define _XTENSA_SIGNAL_H
+
+
+#define _NSIG		64
+#define _NSIG_BPW	32
+#define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+/* Avoid too many header ordering problems.  */
+struct siginfo;
+typedef unsigned long old_sigset_t;		/* at least 32 bits */
+typedef struct {
+	unsigned long sig[_NSIG_WORDS];
+} sigset_t;
+
+#endif
+
+#define SIGHUP		 1
+#define SIGINT		 2
+#define SIGQUIT		 3
+#define SIGILL		 4
+#define SIGTRAP		 5
+#define SIGABRT		 6
+#define SIGIOT		 6
+#define SIGBUS		 7
+#define SIGFPE		 8
+#define SIGKILL		 9
+#define SIGUSR1		10
+#define SIGSEGV		11
+#define SIGUSR2		12
+#define SIGPIPE		13
+#define SIGALRM		14
+#define SIGTERM		15
+#define SIGSTKFLT	16
+#define SIGCHLD		17
+#define SIGCONT		18
+#define SIGSTOP		19
+#define SIGTSTP		20
+#define SIGTTIN		21
+#define SIGTTOU		22
+#define SIGURG		23
+#define SIGXCPU		24
+#define SIGXFSZ		25
+#define SIGVTALRM	26
+#define SIGPROF		27
+#define SIGWINCH	28
+#define SIGIO		29
+#define SIGPOLL		SIGIO
+/* #define SIGLOST		29 */
+#define SIGPWR		30
+#define SIGSYS		31
+#define	SIGUNUSED	31
+
+/* These should not be considered constants from userland.  */
+#define SIGRTMIN	32
+#define SIGRTMAX	(_NSIG-1)
+
+/*
+ * SA_FLAGS values:
+ *
+ * SA_ONSTACK indicates that a registered stack_t will be used.
+ * SA_RESTART flag to get restarting signals (which were the default long ago)
+ * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
+ * SA_RESETHAND clears the handler when the signal is delivered.
+ * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
+ * SA_NODEFER prevents the current signal from being masked in the handler.
+ *
+ * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
+ * Unix names RESETHAND and NODEFER respectively.
+ */
+#define SA_NOCLDSTOP	0x00000001
+#define SA_NOCLDWAIT	0x00000002 /* not supported yet */
+#define SA_SIGINFO	0x00000004
+#define SA_ONSTACK	0x08000000
+#define SA_RESTART	0x10000000
+#define SA_NODEFER	0x40000000
+#define SA_RESETHAND	0x80000000
+
+#define SA_NOMASK	SA_NODEFER
+#define SA_ONESHOT	SA_RESETHAND
+
+#define SA_RESTORER	0x04000000
+
+/*
+ * sigaltstack controls
+ */
+#define SS_ONSTACK	1
+#define SS_DISABLE	2
+
+#define MINSIGSTKSZ	2048
+#define SIGSTKSZ	8192
+
+#ifndef __ASSEMBLY__
+
+#define SIG_BLOCK          0	/* for blocking signals */
+#define SIG_UNBLOCK        1	/* for unblocking signals */
+#define SIG_SETMASK        2	/* for setting the signal mask */
+
+/* Type of a signal handler.  */
+typedef void (*__sighandler_t)(int);
+
+#define SIG_DFL	((__sighandler_t)0)	/* default signal handling */
+#define SIG_IGN	((__sighandler_t)1)	/* ignore signal */
+#define SIG_ERR	((__sighandler_t)-1)	/* error return from signal */
+
+#ifdef __KERNEL__
+struct old_sigaction {
+	__sighandler_t sa_handler;
+	old_sigset_t sa_mask;
+	unsigned long sa_flags;
+	void (*sa_restorer)(void);
+};
+
+struct sigaction {
+	__sighandler_t sa_handler;
+	unsigned long sa_flags;
+	void (*sa_restorer)(void);
+	sigset_t sa_mask;		/* mask last for extensibility */
+};
+
+struct k_sigaction {
+	struct sigaction sa;
+};
+
+#else
+
+/* Here we must cater to libcs that poke about in kernel headers.  */
+
+struct sigaction {
+	union {
+	  __sighandler_t _sa_handler;
+	  void (*_sa_sigaction)(int, struct siginfo *, void *);
+	} _u;
+	sigset_t sa_mask;
+	unsigned long sa_flags;
+	void (*sa_restorer)(void);
+};
+
+#define sa_handler	_u._sa_handler
+#define sa_sigaction	_u._sa_sigaction
+
+#endif /* __KERNEL__ */
+
+typedef struct sigaltstack {
+	void *ss_sp;
+	int ss_flags;
+	size_t ss_size;
+} stack_t;
+
+#ifdef __KERNEL__
+#include <asm/sigcontext.h>
+#define ptrace_signal_deliver(regs, cookie) do { } while (0)
+
+#endif	/* __KERNEL__ */
+#endif	/* __ASSEMBLY__ */
+#endif	/* _XTENSA_SIGNAL_H */
diff --git a/arch/xtensa/include/asm/smp.h b/arch/xtensa/include/asm/smp.h
new file mode 100644
index 0000000..83c569e
--- /dev/null
+++ b/arch/xtensa/include/asm/smp.h
@@ -0,0 +1,27 @@
+/*
+ * include/asm-xtensa/smp.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SMP_H
+#define _XTENSA_SMP_H
+
+extern struct xtensa_cpuinfo boot_cpu_data;
+
+#define cpu_data (&boot_cpu_data)
+#define current_cpu_data boot_cpu_data
+
+struct xtensa_cpuinfo {
+	unsigned long	*pgd_cache;
+	unsigned long	*pte_cache;
+	unsigned long	pgtable_cache_sz;
+};
+
+#define cpu_logical_map(cpu)	(cpu)
+
+#endif	/* _XTENSA_SMP_H */
diff --git a/arch/xtensa/include/asm/socket.h b/arch/xtensa/include/asm/socket.h
new file mode 100644
index 0000000..6100682
--- /dev/null
+++ b/arch/xtensa/include/asm/socket.h
@@ -0,0 +1,68 @@
+/*
+ * include/asm-xtensa/socket.h
+ *
+ * Copied from i386.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _XTENSA_SOCKET_H
+#define _XTENSA_SOCKET_H
+
+#include <asm/sockios.h>
+
+/* For setsockoptions(2) */
+#define SOL_SOCKET	1
+
+#define SO_DEBUG	1
+#define SO_REUSEADDR	2
+#define SO_TYPE		3
+#define SO_ERROR	4
+#define SO_DONTROUTE	5
+#define SO_BROADCAST	6
+#define SO_SNDBUF	7
+#define SO_RCVBUF	8
+#define SO_SNDBUFFORCE	32
+#define SO_RCVBUFFORCE	33
+#define SO_KEEPALIVE	9
+#define SO_OOBINLINE	10
+#define SO_NO_CHECK	11
+#define SO_PRIORITY	12
+#define SO_LINGER	13
+#define SO_BSDCOMPAT	14
+/* To add :#define SO_REUSEPORT 15 */
+#define SO_PASSCRED	16
+#define SO_PEERCRED	17
+#define SO_RCVLOWAT	18
+#define SO_SNDLOWAT	19
+#define SO_RCVTIMEO	20
+#define SO_SNDTIMEO	21
+
+/* Security levels - as per NRL IPv6 - don't actually do anything */
+
+#define SO_SECURITY_AUTHENTICATION		22
+#define SO_SECURITY_ENCRYPTION_TRANSPORT	23
+#define SO_SECURITY_ENCRYPTION_NETWORK		24
+
+#define SO_BINDTODEVICE	25
+
+/* Socket filtering */
+
+#define SO_ATTACH_FILTER        26
+#define SO_DETACH_FILTER        27
+
+#define SO_PEERNAME		28
+#define SO_TIMESTAMP		29
+#define SCM_TIMESTAMP		SO_TIMESTAMP
+
+#define SO_ACCEPTCONN		30
+#define SO_PEERSEC		31
+#define SO_PASSSEC		34
+#define SO_TIMESTAMPNS		35
+#define SCM_TIMESTAMPNS		SO_TIMESTAMPNS
+
+#define SO_MARK			36
+
+#endif	/* _XTENSA_SOCKET_H */
diff --git a/arch/xtensa/include/asm/sockios.h b/arch/xtensa/include/asm/sockios.h
new file mode 100644
index 0000000..efe0af3
--- /dev/null
+++ b/arch/xtensa/include/asm/sockios.h
@@ -0,0 +1,31 @@
+/*
+ * include/asm-xtensa/sockios.h
+ *
+ * Socket-level I/O control calls.  Copied from MIPS.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1995 by Ralf Baechle
+ * Copyright (C) 2001 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SOCKIOS_H
+#define _XTENSA_SOCKIOS_H
+
+#include <asm/ioctl.h>
+
+/* Socket-level I/O control calls. */
+
+#define FIOGETOWN	_IOR('f', 123, int)
+#define FIOSETOWN 	_IOW('f', 124, int)
+
+#define SIOCATMARK	_IOR('s', 7, int)
+#define SIOCSPGRP	_IOW('s', 8, pid_t)
+#define SIOCGPGRP	_IOR('s', 9, pid_t)
+
+#define SIOCGSTAMP	0x8906		/* Get stamp (timeval) */
+#define SIOCGSTAMPNS	0x8907		/* Get stamp (timespec) */
+
+#endif	/* _XTENSA_SOCKIOS_H */
diff --git a/arch/xtensa/include/asm/spinlock.h b/arch/xtensa/include/asm/spinlock.h
new file mode 100644
index 0000000..8ff2364
--- /dev/null
+++ b/arch/xtensa/include/asm/spinlock.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/spinlock.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SPINLOCK_H
+#define _XTENSA_SPINLOCK_H
+
+#include <linux/spinlock.h>
+
+#endif	/* _XTENSA_SPINLOCK_H */
diff --git a/arch/xtensa/include/asm/stat.h b/arch/xtensa/include/asm/stat.h
new file mode 100644
index 0000000..c499203
--- /dev/null
+++ b/arch/xtensa/include/asm/stat.h
@@ -0,0 +1,59 @@
+/*
+ * include/asm-xtensa/stat.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_STAT_H
+#define _XTENSA_STAT_H
+
+#define STAT_HAVE_NSEC 1
+
+struct stat {
+	unsigned long	st_dev;
+	unsigned long	st_ino;
+	unsigned int	st_mode;
+	unsigned int	st_nlink;
+	unsigned int	st_uid;
+	unsigned int	st_gid;
+	unsigned long	st_rdev;
+	long		st_size;
+	unsigned long	st_blksize;
+	unsigned long	st_blocks;
+	unsigned long	st_atime;
+	unsigned long	st_atime_nsec;
+	unsigned long	st_mtime;
+	unsigned long	st_mtime_nsec;
+	unsigned long	st_ctime;
+	unsigned long	st_ctime_nsec;
+	unsigned long	__unused4;
+	unsigned long	__unused5;
+};
+
+struct stat64  {
+	unsigned long long st_dev;	/* Device */
+	unsigned long long st_ino;	/* File serial number */
+	unsigned int  st_mode;		/* File mode. */
+	unsigned int  st_nlink;		/* Link count. */
+	unsigned int  st_uid;		/* User ID of the file's owner. */
+	unsigned int  st_gid;		/* Group ID of the file's group. */
+	unsigned long long st_rdev;	/* Device number, if device. */
+	long long st_size;		/* Size of file, in bytes. */
+	unsigned long st_blksize;	/* Optimal block size for I/O. */
+	unsigned long __unused2;
+	unsigned long long st_blocks;	/* Number 512-byte blocks allocated. */
+	unsigned long st_atime;		/* Time of last access. */
+	unsigned long st_atime_nsec;
+	unsigned long st_mtime;		/* Time of last modification. */
+	unsigned long st_mtime_nsec;
+	unsigned long st_ctime;		/* Time of last status change. */
+	unsigned long st_ctime_nsec;
+	unsigned long __unused4;
+	unsigned long __unused5;
+};
+
+#endif	/* _XTENSA_STAT_H */
diff --git a/arch/xtensa/include/asm/statfs.h b/arch/xtensa/include/asm/statfs.h
new file mode 100644
index 0000000..9c3d1a2
--- /dev/null
+++ b/arch/xtensa/include/asm/statfs.h
@@ -0,0 +1,17 @@
+/*
+ * include/asm-xtensa/statfs.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_STATFS_H
+#define _XTENSA_STATFS_H
+
+#include <asm-generic/statfs.h>
+
+#endif	/* _XTENSA_STATFS_H */
+
diff --git a/arch/xtensa/include/asm/string.h b/arch/xtensa/include/asm/string.h
new file mode 100644
index 0000000..5fb8c27
--- /dev/null
+++ b/arch/xtensa/include/asm/string.h
@@ -0,0 +1,124 @@
+/*
+ * include/asm-xtensa/string.h
+ *
+ * These trivial string functions are considered part of the public domain.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+/* We should optimize these. See arch/xtensa/lib/strncpy_user.S */
+
+#ifndef _XTENSA_STRING_H
+#define _XTENSA_STRING_H
+
+#define __HAVE_ARCH_STRCPY
+static inline char *strcpy(char *__dest, const char *__src)
+{
+	register char *__xdest = __dest;
+	unsigned long __dummy;
+
+	__asm__ __volatile__("1:\n\t"
+		"l8ui	%2, %1, 0\n\t"
+		"s8i	%2, %0, 0\n\t"
+		"addi	%1, %1, 1\n\t"
+		"addi	%0, %0, 1\n\t"
+		"bnez	%2, 1b\n\t"
+		: "=r" (__dest), "=r" (__src), "=&r" (__dummy)
+		: "0" (__dest), "1" (__src)
+		: "memory");
+
+	return __xdest;
+}
+
+#define __HAVE_ARCH_STRNCPY
+static inline char *strncpy(char *__dest, const char *__src, size_t __n)
+{
+	register char *__xdest = __dest;
+	unsigned long __dummy;
+
+	if (__n == 0)
+		return __xdest;
+
+	__asm__ __volatile__(
+		"1:\n\t"
+		"l8ui	%2, %1, 0\n\t"
+		"s8i	%2, %0, 0\n\t"
+		"addi	%1, %1, 1\n\t"
+		"addi	%0, %0, 1\n\t"
+		"beqz	%2, 2f\n\t"
+		"bne	%1, %5, 1b\n"
+		"2:"
+		: "=r" (__dest), "=r" (__src), "=&r" (__dummy)
+		: "0" (__dest), "1" (__src), "r" (__src+__n)
+		: "memory");
+
+	return __xdest;
+}
+
+#define __HAVE_ARCH_STRCMP
+static inline int strcmp(const char *__cs, const char *__ct)
+{
+	register int __res;
+	unsigned long __dummy;
+
+	__asm__ __volatile__(
+		"1:\n\t"
+		"l8ui	%3, %1, 0\n\t"
+		"addi	%1, %1, 1\n\t"
+		"l8ui	%2, %0, 0\n\t"
+		"addi	%0, %0, 1\n\t"
+		"beqz	%2, 2f\n\t"
+		"beq	%2, %3, 1b\n"
+		"2:\n\t"
+		"sub	%2, %3, %2"
+		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
+		: "0" (__cs), "1" (__ct));
+
+	return __res;
+}
+
+#define __HAVE_ARCH_STRNCMP
+static inline int strncmp(const char *__cs, const char *__ct, size_t __n)
+{
+	register int __res;
+	unsigned long __dummy;
+
+	__asm__ __volatile__(
+		"mov	%2, %3\n"
+		"1:\n\t"
+		"beq	%0, %6, 2f\n\t"
+		"l8ui	%3, %1, 0\n\t"
+		"addi	%1, %1, 1\n\t"
+		"l8ui	%2, %0, 0\n\t"
+		"addi	%0, %0, 1\n\t"
+		"beqz	%2, 2f\n\t"
+		"beqz	%3, 2f\n\t"
+		"beq	%2, %3, 1b\n"
+		"2:\n\t"
+		"sub	%2, %3, %2"
+		: "=r" (__cs), "=r" (__ct), "=&r" (__res), "=&r" (__dummy)
+		: "0" (__cs), "1" (__ct), "r" (__cs+__n));
+
+	return __res;
+}
+
+#define __HAVE_ARCH_MEMSET
+extern void *memset(void *__s, int __c, size_t __count);
+
+#define __HAVE_ARCH_MEMCPY
+extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
+
+#define __HAVE_ARCH_MEMMOVE
+extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
+
+/* Don't build bcopy at all ...  */
+#define __HAVE_ARCH_BCOPY
+
+#define __HAVE_ARCH_MEMSCAN
+#define memscan memchr
+
+#endif	/* _XTENSA_STRING_H */
diff --git a/arch/xtensa/include/asm/syscall.h b/arch/xtensa/include/asm/syscall.h
new file mode 100644
index 0000000..05cebf8
--- /dev/null
+++ b/arch/xtensa/include/asm/syscall.h
@@ -0,0 +1,42 @@
+/*
+ * include/asm-xtensa/syscall.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2007 Tensilica Inc.
+ */
+
+struct pt_regs;
+struct sigaction;
+asmlinkage long xtensa_execve(char*, char**, char**, struct pt_regs*);
+asmlinkage long xtensa_clone(unsigned long, unsigned long, struct pt_regs*);
+asmlinkage long xtensa_pipe(int __user *);
+asmlinkage long xtensa_mmap2(unsigned long, unsigned long, unsigned long,
+    			     unsigned long, unsigned long, unsigned long);
+asmlinkage long xtensa_ptrace(long, long, long, long);
+asmlinkage long xtensa_sigreturn(struct pt_regs*);
+asmlinkage long xtensa_rt_sigreturn(struct pt_regs*);
+asmlinkage long xtensa_sigsuspend(struct pt_regs*);
+asmlinkage long xtensa_rt_sigsuspend(struct pt_regs*);
+asmlinkage long xtensa_sigaction(int, const struct old_sigaction*,
+				 struct old_sigaction*);
+asmlinkage long xtensa_sigaltstack(struct pt_regs *regs);
+asmlinkage long sys_rt_sigaction(int,
+				 const struct sigaction __user *,
+				 struct sigaction __user *,
+				 size_t);
+asmlinkage long xtensa_shmat(int, char __user *, int);
+asmlinkage long xtensa_fadvise64_64(int, int,
+				    unsigned long long, unsigned long long);
+
+/* Should probably move to linux/syscalls.h */
+struct pollfd;
+asmlinkage long sys_pselect6(int n, fd_set __user *inp, fd_set __user *outp,
+	fd_set __user *exp, struct timespec __user *tsp, void __user *sig);
+asmlinkage long sys_ppoll(struct pollfd __user *ufds, unsigned int nfds,
+	struct timespec __user *tsp, const sigset_t __user *sigmask,
+	size_t sigsetsize);
+
+
diff --git a/arch/xtensa/include/asm/system.h b/arch/xtensa/include/asm/system.h
new file mode 100644
index 0000000..62b1e8f
--- /dev/null
+++ b/arch/xtensa/include/asm/system.h
@@ -0,0 +1,215 @@
+/*
+ * include/asm-xtensa/system.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_SYSTEM_H
+#define _XTENSA_SYSTEM_H
+
+#include <linux/stringify.h>
+
+#include <asm/processor.h>
+
+/* interrupt control */
+
+#define local_save_flags(x)						\
+	__asm__ __volatile__ ("rsr %0,"__stringify(PS) : "=a" (x));
+#define local_irq_restore(x)	do {					\
+	__asm__ __volatile__ ("wsr %0, "__stringify(PS)" ; rsync" 	\
+	    		      :: "a" (x) : "memory"); } while(0);
+#define local_irq_save(x)	do {					\
+	__asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL) 	\
+	    		      : "=a" (x) :: "memory");} while(0);
+
+static inline void local_irq_disable(void)
+{
+	unsigned long flags;
+	__asm__ __volatile__ ("rsil %0, "__stringify(LOCKLEVEL)
+	    		      : "=a" (flags) :: "memory");
+}
+static inline void local_irq_enable(void)
+{
+	unsigned long flags;
+	__asm__ __volatile__ ("rsil %0, 0" : "=a" (flags) :: "memory");
+
+}
+
+static inline int irqs_disabled(void)
+{
+	unsigned long flags;
+	local_save_flags(flags);
+	return flags & 0xf;
+}
+
+
+#define smp_read_barrier_depends() do { } while(0)
+#define read_barrier_depends() do { } while(0)
+
+#define mb()  barrier()
+#define rmb() mb()
+#define wmb() mb()
+
+#ifdef CONFIG_SMP
+#error smp_* not defined
+#else
+#define smp_mb()	barrier()
+#define smp_rmb()	barrier()
+#define smp_wmb()	barrier()
+#endif
+
+#define set_mb(var, value)	do { var = value; mb(); } while (0)
+
+#if !defined (__ASSEMBLY__)
+
+/* * switch_to(n) should switch tasks to task nr n, first
+ * checking that n isn't the current task, in which case it does nothing.
+ */
+extern void *_switch_to(void *last, void *next);
+
+#endif	/* __ASSEMBLY__ */
+
+#define switch_to(prev,next,last)		\
+do {						\
+	(last) = _switch_to(prev, next);	\
+} while(0)
+
+/*
+ * cmpxchg
+ */
+
+static inline unsigned long
+__cmpxchg_u32(volatile int *p, int old, int new)
+{
+  __asm__ __volatile__("rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+		       "l32i    %0, %1, 0              \n\t"
+		       "bne	%0, %2, 1f             \n\t"
+		       "s32i    %3, %1, 0              \n\t"
+		       "1:                             \n\t"
+		       "wsr     a15, "__stringify(PS)" \n\t"
+		       "rsync                          \n\t"
+		       : "=&a" (old)
+		       : "a" (p), "a" (old), "r" (new)
+		       : "a15", "memory");
+  return old;
+}
+/* This function doesn't exist, so you'll get a linker error
+ * if something tries to do an invalid cmpxchg(). */
+
+extern void __cmpxchg_called_with_bad_pointer(void);
+
+static __inline__ unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, int size)
+{
+	switch (size) {
+	case 4:  return __cmpxchg_u32(ptr, old, new);
+	default: __cmpxchg_called_with_bad_pointer();
+		 return old;
+	}
+}
+
+#define cmpxchg(ptr,o,n)						      \
+	({ __typeof__(*(ptr)) _o_ = (o);				      \
+	   __typeof__(*(ptr)) _n_ = (n);				      \
+	   (__typeof__(*(ptr))) __cmpxchg((ptr), (unsigned long)_o_,	      \
+	   			        (unsigned long)_n_, sizeof (*(ptr))); \
+	})
+
+#include <asm-generic/cmpxchg-local.h>
+
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+				      unsigned long old,
+				      unsigned long new, int size)
+{
+	switch (size) {
+	case 4:
+		return __cmpxchg_u32(ptr, old, new);
+	default:
+		return __cmpxchg_local_generic(ptr, old, new, size);
+	}
+
+	return old;
+}
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr, o, n)				  	       \
+	((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\
+			(unsigned long)(n), sizeof(*(ptr))))
+#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
+
+/*
+ * xchg_u32
+ *
+ * Note that a15 is used here because the register allocation
+ * done by the compiler is not guaranteed and a window overflow
+ * may not occur between the rsil and wsr instructions. By using
+ * a15 in the rsil, the machine is guaranteed to be in a state
+ * where no register reference will cause an overflow.
+ */
+
+static inline unsigned long xchg_u32(volatile int * m, unsigned long val)
+{
+  unsigned long tmp;
+  __asm__ __volatile__("rsil    a15, "__stringify(LOCKLEVEL)"\n\t"
+		       "l32i    %0, %1, 0              \n\t"
+		       "s32i    %2, %1, 0              \n\t"
+		       "wsr     a15, "__stringify(PS)" \n\t"
+		       "rsync                          \n\t"
+		       : "=&a" (tmp)
+		       : "a" (m), "a" (val)
+		       : "a15", "memory");
+  return tmp;
+}
+
+#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+
+/*
+ * This only works if the compiler isn't horribly bad at optimizing.
+ * gcc-2.5.8 reportedly can't handle this, but I define that one to
+ * be dead anyway.
+ */
+
+extern void __xchg_called_with_bad_pointer(void);
+
+static __inline__ unsigned long
+__xchg(unsigned long x, volatile void * ptr, int size)
+{
+	switch (size) {
+		case 4:
+			return xchg_u32(ptr, x);
+	}
+	__xchg_called_with_bad_pointer();
+	return x;
+}
+
+extern void set_except_vector(int n, void *addr);
+
+static inline void spill_registers(void)
+{
+	unsigned int a0, ps;
+
+	__asm__ __volatile__ (
+		"movi	a14," __stringify (PS_EXCM_BIT) " | 1\n\t"
+		"mov	a12, a0\n\t"
+		"rsr	a13," __stringify(SAR) "\n\t"
+		"xsr	a14," __stringify(PS) "\n\t"
+		"movi	a0, _spill_registers\n\t"
+		"rsync\n\t"
+		"callx0 a0\n\t"
+		"mov	a0, a12\n\t"
+		"wsr	a13," __stringify(SAR) "\n\t"
+		"wsr	a14," __stringify(PS) "\n\t"
+		:: "a" (&a0), "a" (&ps)
+		: "a2", "a3", "a4", "a7", "a11", "a12", "a13", "a14", "a15", "memory");
+}
+
+#define arch_align_stack(x) (x)
+
+#endif	/* _XTENSA_SYSTEM_H */
diff --git a/arch/xtensa/include/asm/termbits.h b/arch/xtensa/include/asm/termbits.h
new file mode 100644
index 0000000..85aa6a3c
--- /dev/null
+++ b/arch/xtensa/include/asm/termbits.h
@@ -0,0 +1,219 @@
+/*
+ * include/asm-xtensa/termbits.h
+ *
+ * Copied from SH.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TERMBITS_H
+#define _XTENSA_TERMBITS_H
+
+
+#include <linux/posix_types.h>
+
+typedef unsigned char	cc_t;
+typedef unsigned int	speed_t;
+typedef unsigned int	tcflag_t;
+
+#define NCCS 19
+struct termios {
+	tcflag_t c_iflag;		/* input mode flags */
+	tcflag_t c_oflag;		/* output mode flags */
+	tcflag_t c_cflag;		/* control mode flags */
+	tcflag_t c_lflag;		/* local mode flags */
+	cc_t c_line;			/* line discipline */
+	cc_t c_cc[NCCS];		/* control characters */
+};
+
+struct termios2 {
+	tcflag_t c_iflag;		/* input mode flags */
+	tcflag_t c_oflag;		/* output mode flags */
+	tcflag_t c_cflag;		/* control mode flags */
+	tcflag_t c_lflag;		/* local mode flags */
+	cc_t c_line;			/* line discipline */
+	cc_t c_cc[NCCS];		/* control characters */
+	speed_t c_ispeed;		/* input speed */
+	speed_t c_ospeed;		/* output speed */
+};
+
+struct ktermios {
+	tcflag_t c_iflag;		/* input mode flags */
+	tcflag_t c_oflag;		/* output mode flags */
+	tcflag_t c_cflag;		/* control mode flags */
+	tcflag_t c_lflag;		/* local mode flags */
+	cc_t c_line;			/* line discipline */
+	cc_t c_cc[NCCS];		/* control characters */
+	speed_t c_ispeed;		/* input speed */
+	speed_t c_ospeed;		/* output speed */
+};
+
+/* c_cc characters */
+
+#define VINTR 0
+#define VQUIT 1
+#define VERASE 2
+#define VKILL 3
+#define VEOF 4
+#define VTIME 5
+#define VMIN 6
+#define VSWTC 7
+#define VSTART 8
+#define VSTOP 9
+#define VSUSP 10
+#define VEOL 11
+#define VREPRINT 12
+#define VDISCARD 13
+#define VWERASE 14
+#define VLNEXT 15
+#define VEOL2 16
+
+/* c_iflag bits */
+
+#define IGNBRK	0000001
+#define BRKINT	0000002
+#define IGNPAR	0000004
+#define PARMRK	0000010
+#define INPCK	0000020
+#define ISTRIP	0000040
+#define INLCR	0000100
+#define IGNCR	0000200
+#define ICRNL	0000400
+#define IUCLC	0001000
+#define IXON	0002000
+#define IXANY	0004000
+#define IXOFF	0010000
+#define IMAXBEL	0020000
+#define IUTF8	0040000
+
+/* c_oflag bits */
+
+#define OPOST	0000001
+#define OLCUC	0000002
+#define ONLCR	0000004
+#define OCRNL	0000010
+#define ONOCR	0000020
+#define ONLRET	0000040
+#define OFILL	0000100
+#define OFDEL	0000200
+#define NLDLY	0000400
+#define   NL0	0000000
+#define   NL1	0000400
+#define CRDLY	0003000
+#define   CR0	0000000
+#define   CR1	0001000
+#define   CR2	0002000
+#define   CR3	0003000
+#define TABDLY	0014000
+#define   TAB0	0000000
+#define   TAB1	0004000
+#define   TAB2	0010000
+#define   TAB3	0014000
+#define   XTABS	0014000
+#define BSDLY	0020000
+#define   BS0	0000000
+#define   BS1	0020000
+#define VTDLY	0040000
+#define   VT0	0000000
+#define   VT1	0040000
+#define FFDLY	0100000
+#define   FF0	0000000
+#define   FF1	0100000
+
+/* c_cflag bit meaning */
+
+#define CBAUD	0010017
+#define  B0	0000000		/* hang up */
+#define  B50	0000001
+#define  B75	0000002
+#define  B110	0000003
+#define  B134	0000004
+#define  B150	0000005
+#define  B200	0000006
+#define  B300	0000007
+#define  B600	0000010
+#define  B1200	0000011
+#define  B1800	0000012
+#define  B2400	0000013
+#define  B4800	0000014
+#define  B9600	0000015
+#define  B19200	0000016
+#define  B38400	0000017
+#define EXTA B19200
+#define EXTB B38400
+#define CSIZE	0000060
+#define   CS5	0000000
+#define   CS6	0000020
+#define   CS7	0000040
+#define   CS8	0000060
+#define CSTOPB	0000100
+#define CREAD	0000200
+#define PARENB	0000400
+#define PARODD	0001000
+#define HUPCL	0002000
+#define CLOCAL	0004000
+#define CBAUDEX 0010000
+#define	   BOTHER 0010000
+#define    B57600 0010001
+#define   B115200 0010002
+#define   B230400 0010003
+#define   B460800 0010004
+#define   B500000 0010005
+#define   B576000 0010006
+#define   B921600 0010007
+#define  B1000000 0010010
+#define  B1152000 0010011
+#define  B1500000 0010012
+#define  B2000000 0010013
+#define  B2500000 0010014
+#define  B3000000 0010015
+#define  B3500000 0010016
+#define  B4000000 0010017
+#define CIBAUD	  002003600000		/* input baud rate */
+#define CMSPAR	  010000000000		/* mark or space (stick) parity */
+#define CRTSCTS	  020000000000		/* flow control */
+
+#define IBSHIFT	16		/* Shift from CBAUD to CIBAUD */
+
+/* c_lflag bits */
+
+#define ISIG	0000001
+#define ICANON	0000002
+#define XCASE	0000004
+#define ECHO	0000010
+#define ECHOE	0000020
+#define ECHOK	0000040
+#define ECHONL	0000100
+#define NOFLSH	0000200
+#define TOSTOP	0000400
+#define ECHOCTL	0001000
+#define ECHOPRT	0002000
+#define ECHOKE	0004000
+#define FLUSHO	0010000
+#define PENDIN	0040000
+#define IEXTEN	0100000
+
+/* tcflow() and TCXONC use these */
+
+#define	TCOOFF		0
+#define	TCOON		1
+#define	TCIOFF		2
+#define	TCION		3
+
+/* tcflush() and TCFLSH use these */
+
+#define	TCIFLUSH	0
+#define	TCOFLUSH	1
+#define	TCIOFLUSH	2
+
+/* tcsetattr uses these */
+
+#define	TCSANOW		0
+#define	TCSADRAIN	1
+#define	TCSAFLUSH	2
+
+#endif	/* _XTENSA_TERMBITS_H */
diff --git a/arch/xtensa/include/asm/termios.h b/arch/xtensa/include/asm/termios.h
new file mode 100644
index 0000000..4673f42
--- /dev/null
+++ b/arch/xtensa/include/asm/termios.h
@@ -0,0 +1,105 @@
+/*
+ * include/asm-xtensa/termios.h
+ *
+ * Copied from SH.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TERMIOS_H
+#define _XTENSA_TERMIOS_H
+
+#include <asm/termbits.h>
+#include <asm/ioctls.h>
+
+struct winsize {
+	unsigned short ws_row;
+	unsigned short ws_col;
+	unsigned short ws_xpixel;
+	unsigned short ws_ypixel;
+};
+
+#define NCC 8
+struct termio {
+	unsigned short c_iflag;		/* input mode flags */
+	unsigned short c_oflag;		/* output mode flags */
+	unsigned short c_cflag;		/* control mode flags */
+	unsigned short c_lflag;		/* local mode flags */
+	unsigned char c_line;		/* line discipline */
+	unsigned char c_cc[NCC];	/* control characters */
+};
+
+/* Modem lines */
+
+#define TIOCM_LE	0x001
+#define TIOCM_DTR	0x002
+#define TIOCM_RTS	0x004
+#define TIOCM_ST	0x008
+#define TIOCM_SR	0x010
+#define TIOCM_CTS	0x020
+#define TIOCM_CAR	0x040
+#define TIOCM_RNG	0x080
+#define TIOCM_DSR	0x100
+#define TIOCM_CD	TIOCM_CAR
+#define TIOCM_RI	TIOCM_RNG
+#define TIOCM_OUT1	0x2000
+#define TIOCM_OUT2	0x4000
+#define TIOCM_LOOP	0x8000
+
+/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */
+
+#ifdef __KERNEL__
+
+/*	intr=^C		quit=^\		erase=del	kill=^U
+	eof=^D		vtime=\0	vmin=\1		sxtc=\0
+	start=^Q	stop=^S		susp=^Z		eol=\0
+	reprint=^R	discard=^U	werase=^W	lnext=^V
+	eol2=\0
+*/
+#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0"
+
+/*
+ * Translate a "termio" structure into a "termios". Ugh.
+ */
+
+#define SET_LOW_TERMIOS_BITS(termios, termio, x) { \
+	unsigned short __tmp; \
+	get_user(__tmp,&(termio)->x); \
+	*(unsigned short *) &(termios)->x = __tmp; \
+}
+
+#define user_termio_to_kernel_termios(termios, termio) \
+({ \
+	SET_LOW_TERMIOS_BITS(termios, termio, c_iflag); \
+	SET_LOW_TERMIOS_BITS(termios, termio, c_oflag); \
+	SET_LOW_TERMIOS_BITS(termios, termio, c_cflag); \
+	SET_LOW_TERMIOS_BITS(termios, termio, c_lflag); \
+	copy_from_user((termios)->c_cc, (termio)->c_cc, NCC); \
+})
+
+/*
+ * Translate a "termios" structure into a "termio". Ugh.
+ */
+
+#define kernel_termios_to_user_termio(termio, termios) \
+({ \
+	put_user((termios)->c_iflag, &(termio)->c_iflag); \
+	put_user((termios)->c_oflag, &(termio)->c_oflag); \
+	put_user((termios)->c_cflag, &(termio)->c_cflag); \
+	put_user((termios)->c_lflag, &(termio)->c_lflag); \
+	put_user((termios)->c_line,  &(termio)->c_line); \
+	copy_to_user((termio)->c_cc, (termios)->c_cc, NCC); \
+})
+
+#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios2))
+#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios2))
+#define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
+#define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
+
+#endif	/* __KERNEL__ */
+
+#endif	/* _XTENSA_TERMIOS_H */
diff --git a/arch/xtensa/include/asm/thread_info.h b/arch/xtensa/include/asm/thread_info.h
new file mode 100644
index 0000000..0f4fe1f
--- /dev/null
+++ b/arch/xtensa/include/asm/thread_info.h
@@ -0,0 +1,164 @@
+/*
+ * include/asm-xtensa/thread_info.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_THREAD_INFO_H
+#define _XTENSA_THREAD_INFO_H
+
+#ifdef __KERNEL__
+
+#ifndef __ASSEMBLY__
+# include <asm/processor.h>
+#endif
+
+/*
+ * low level task data that entry.S needs immediate access to
+ * - this struct should fit entirely inside of one cache line
+ * - this struct shares the supervisor stack pages
+ * - if the contents of this structure are changed, the assembly constants
+ *   must also be changed
+ */
+
+#ifndef __ASSEMBLY__
+
+#if XTENSA_HAVE_COPROCESSORS
+
+typedef struct xtregs_coprocessor {
+	xtregs_cp0_t cp0;
+	xtregs_cp1_t cp1;
+	xtregs_cp2_t cp2;
+	xtregs_cp3_t cp3;
+	xtregs_cp4_t cp4;
+	xtregs_cp5_t cp5;
+	xtregs_cp6_t cp6;
+	xtregs_cp7_t cp7;
+} xtregs_coprocessor_t;
+
+#endif
+
+struct thread_info {
+	struct task_struct	*task;		/* main task structure */
+	struct exec_domain	*exec_domain;	/* execution domain */
+	unsigned long		flags;		/* low level flags */
+	unsigned long		status;		/* thread-synchronous flags */
+	__u32			cpu;		/* current CPU */
+	__s32			preempt_count;	/* 0 => preemptable,< 0 => BUG*/
+
+	mm_segment_t		addr_limit;	/* thread address space */
+	struct restart_block    restart_block;
+
+	unsigned long		cpenable;
+
+	/* Allocate storage for extra user states and coprocessor states. */
+#if XTENSA_HAVE_COPROCESSORS
+	xtregs_coprocessor_t	xtregs_cp;
+#endif
+	xtregs_user_t		xtregs_user;
+};
+
+#else /* !__ASSEMBLY__ */
+
+/* offsets into the thread_info struct for assembly code access */
+#define TI_TASK		 0x00000000
+#define TI_EXEC_DOMAIN	 0x00000004
+#define TI_FLAGS	 0x00000008
+#define TI_STATUS	 0x0000000C
+#define TI_CPU		 0x00000010
+#define TI_PRE_COUNT	 0x00000014
+#define TI_ADDR_LIMIT	 0x00000018
+#define TI_RESTART_BLOCK 0x000001C
+
+#endif
+
+#define PREEMPT_ACTIVE		0x10000000
+
+/*
+ * macros/functions for gaining access to the thread information structure
+ *
+ * preempt_count needs to be 1 initially, until the scheduler is functional.
+ */
+
+#ifndef __ASSEMBLY__
+
+#define INIT_THREAD_INFO(tsk)			\
+{						\
+	.task		= &tsk,			\
+	.exec_domain	= &default_exec_domain,	\
+	.flags		= 0,			\
+	.cpu		= 0,			\
+	.preempt_count	= 1,			\
+	.addr_limit	= KERNEL_DS,		\
+	.restart_block = {			\
+		.fn = do_no_restart_syscall,	\
+	},					\
+}
+
+#define init_thread_info	(init_thread_union.thread_info)
+#define init_stack		(init_thread_union.stack)
+
+/* how to get the thread information struct from C */
+static inline struct thread_info *current_thread_info(void)
+{
+	struct thread_info *ti;
+	 __asm__("extui %0,a1,0,13\n\t"
+	         "xor %0, a1, %0" : "=&r" (ti) : );
+	return ti;
+}
+
+#else /* !__ASSEMBLY__ */
+
+/* how to get the thread information struct from ASM */
+#define GET_THREAD_INFO(reg,sp) \
+	extui reg, sp, 0, 13; \
+	xor   reg, sp, reg
+#endif
+
+
+/*
+ * thread information flags
+ * - these are process state flags that various assembly files may need to access
+ * - pending work-to-be-done flags are in LSW
+ * - other flags in MSW
+ */
+#define TIF_SYSCALL_TRACE	0	/* syscall trace active */
+#define TIF_SIGPENDING		1	/* signal pending */
+#define TIF_NEED_RESCHED	2	/* rescheduling necessary */
+#define TIF_SINGLESTEP		3	/* restore singlestep on return to user mode */
+#define TIF_IRET		4	/* return with iret */
+#define TIF_MEMDIE		5
+#define TIF_RESTORE_SIGMASK	6	/* restore signal mask in do_signal() */
+#define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
+#define TIF_FREEZE		17	/* is freezing for suspend */
+
+#define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
+#define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
+#define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_SINGLESTEP		(1<<TIF_SINGLESTEP)
+#define _TIF_IRET		(1<<TIF_IRET)
+#define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
+#define _TIF_FREEZE		(1<<TIF_FREEZE)
+
+#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
+#define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
+
+/*
+ * Thread-synchronous status.
+ *
+ * This is different from the flags in that nobody else
+ * ever touches our thread-synchronous status, so we don't
+ * have to worry about atomic accesses.
+ */
+#define TS_USEDFPU		0x0001	/* FPU was used by this task this quantum (SMP) */
+
+#define THREAD_SIZE 8192	//(2*PAGE_SIZE)
+#define THREAD_SIZE_ORDER 1
+
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_THREAD_INFO */
diff --git a/arch/xtensa/include/asm/timex.h b/arch/xtensa/include/asm/timex.h
new file mode 100644
index 0000000..b83a818
--- /dev/null
+++ b/arch/xtensa/include/asm/timex.h
@@ -0,0 +1,96 @@
+/*
+ * include/asm-xtensa/timex.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TIMEX_H
+#define _XTENSA_TIMEX_H
+
+#ifdef __KERNEL__
+
+#include <asm/processor.h>
+#include <linux/stringify.h>
+
+#define _INTLEVEL(x)	XCHAL_INT ## x ## _LEVEL
+#define INTLEVEL(x)	_INTLEVEL(x)
+
+#if INTLEVEL(XCHAL_TIMER0_INTERRUPT) == 1
+# define LINUX_TIMER     0
+# define LINUX_TIMER_INT XCHAL_TIMER0_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER1_INTERRUPT) == 1
+# define LINUX_TIMER     1
+# define LINUX_TIMER_INT XCHAL_TIMER1_INTERRUPT
+#elif INTLEVEL(XCHAL_TIMER2_INTERRUPT) == 1
+# define LINUX_TIMER     2
+# define LINUX_TIMER_INT XCHAL_TIMER2_INTERRUPT
+#else
+# error "Bad timer number for Linux configurations!"
+#endif
+
+#define LINUX_TIMER_MASK        (1L << LINUX_TIMER_INT)
+
+#define CLOCK_TICK_RATE 	1193180	/* (everyone is using this value) */
+#define CLOCK_TICK_FACTOR       20 /* Factor of both 10^6 and CLOCK_TICK_RATE */
+
+#ifdef CONFIG_XTENSA_CALIBRATE_CCOUNT
+extern unsigned long ccount_per_jiffy;
+extern unsigned long ccount_nsec;
+#define CCOUNT_PER_JIFFY ccount_per_jiffy
+#define NSEC_PER_CCOUNT  ccount_nsec
+#else
+#define CCOUNT_PER_JIFFY (CONFIG_XTENSA_CPU_CLOCK*(1000000UL/HZ))
+#define NSEC_PER_CCOUNT (1000UL / CONFIG_XTENSA_CPU_CLOCK)
+#endif
+
+
+typedef unsigned long long cycles_t;
+
+/*
+ * Only used for SMP.
+ */
+
+extern cycles_t cacheflush_time;
+
+#define get_cycles()	(0)
+
+
+/*
+ * Register access.
+ */
+
+#define WSR_CCOUNT(r)	  asm volatile ("wsr %0,"__stringify(CCOUNT) :: "a" (r))
+#define RSR_CCOUNT(r)	  asm volatile ("rsr %0,"__stringify(CCOUNT) : "=a" (r))
+#define WSR_CCOMPARE(x,r) asm volatile ("wsr %0,"__stringify(CCOMPARE)"+"__stringify(x) :: "a"(r))
+#define RSR_CCOMPARE(x,r) asm volatile ("rsr %0,"__stringify(CCOMPARE)"+"__stringify(x) : "=a"(r))
+
+static inline unsigned long get_ccount (void)
+{
+	unsigned long ccount;
+	RSR_CCOUNT(ccount);
+	return ccount;
+}
+
+static inline void set_ccount (unsigned long ccount)
+{
+	WSR_CCOUNT(ccount);
+}
+
+static inline unsigned long get_linux_timer (void)
+{
+	unsigned ccompare;
+	RSR_CCOMPARE(LINUX_TIMER, ccompare);
+	return ccompare;
+}
+
+static inline void set_linux_timer (unsigned long ccompare)
+{
+	WSR_CCOMPARE(LINUX_TIMER, ccompare);
+}
+
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_TIMEX_H */
diff --git a/arch/xtensa/include/asm/tlb.h b/arch/xtensa/include/asm/tlb.h
new file mode 100644
index 0000000..31c220f
--- /dev/null
+++ b/arch/xtensa/include/asm/tlb.h
@@ -0,0 +1,47 @@
+/*
+ * include/asm-xtensa/tlb.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TLB_H
+#define _XTENSA_TLB_H
+
+#include <asm/cache.h>
+#include <asm/page.h>
+
+#if (DCACHE_WAY_SIZE <= PAGE_SIZE)
+
+/* Note, read http://lkml.org/lkml/2004/1/15/6 */
+
+# define tlb_start_vma(tlb,vma)			do { } while (0)
+# define tlb_end_vma(tlb,vma)			do { } while (0)
+
+#else
+
+# define tlb_start_vma(tlb, vma)					      \
+	do {								      \
+		if (!tlb->fullmm)					      \
+			flush_cache_range(vma, vma->vm_start, vma->vm_end);   \
+	} while(0)
+
+# define tlb_end_vma(tlb, vma)						      \
+	do {								      \
+		if (!tlb->fullmm)					      \
+			flush_tlb_range(vma, vma->vm_start, vma->vm_end);     \
+	} while(0)
+
+#endif
+
+#define __tlb_remove_tlb_entry(tlb,pte,addr)	do { } while (0)
+#define tlb_flush(tlb)				flush_tlb_mm((tlb)->mm)
+
+#include <asm-generic/tlb.h>
+
+#define __pte_free_tlb(tlb, pte)		pte_free((tlb)->mm, pte)
+
+#endif	/* _XTENSA_TLB_H */
diff --git a/arch/xtensa/include/asm/tlbflush.h b/arch/xtensa/include/asm/tlbflush.h
new file mode 100644
index 0000000..46d2400
--- /dev/null
+++ b/arch/xtensa/include/asm/tlbflush.h
@@ -0,0 +1,191 @@
+/*
+ * include/asm-xtensa/tlbflush.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TLBFLUSH_H
+#define _XTENSA_TLBFLUSH_H
+
+#ifdef __KERNEL__
+
+#include <linux/stringify.h>
+#include <asm/processor.h>
+
+#define DTLB_WAY_PGD	7
+
+#define ITLB_ARF_WAYS	4
+#define DTLB_ARF_WAYS	4
+
+#define ITLB_HIT_BIT	3
+#define DTLB_HIT_BIT	4
+
+#ifndef __ASSEMBLY__
+
+/* TLB flushing:
+ *
+ *  - flush_tlb_all() flushes all processes TLB entries
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB entries
+ *  - flush_tlb_page(mm, vmaddr) flushes a single page
+ *  - flush_tlb_range(mm, start, end) flushes a range of pages
+ */
+
+extern void flush_tlb_all(void);
+extern void flush_tlb_mm(struct mm_struct*);
+extern void flush_tlb_page(struct vm_area_struct*,unsigned long);
+extern void flush_tlb_range(struct vm_area_struct*,unsigned long,unsigned long);
+
+#define flush_tlb_kernel_range(start,end) flush_tlb_all()
+
+/* TLB operations. */
+
+static inline unsigned long itlb_probe(unsigned long addr)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("pitlb  %0, %1\n\t" : "=a" (tmp) : "a" (addr));
+	return tmp;
+}
+
+static inline unsigned long dtlb_probe(unsigned long addr)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("pdtlb  %0, %1\n\t" : "=a" (tmp) : "a" (addr));
+	return tmp;
+}
+
+static inline void invalidate_itlb_entry (unsigned long probe)
+{
+	__asm__ __volatile__("iitlb  %0; isync\n\t" : : "a" (probe));
+}
+
+static inline void invalidate_dtlb_entry (unsigned long probe)
+{
+	__asm__ __volatile__("idtlb  %0; dsync\n\t" : : "a" (probe));
+}
+
+/* Use the .._no_isync functions with caution.  Generally, these are
+ * handy for bulk invalidates followed by a single 'isync'.  The
+ * caller must follow up with an 'isync', which can be relatively
+ * expensive on some Xtensa implementations.
+ */
+static inline void invalidate_itlb_entry_no_isync (unsigned entry)
+{
+	/* Caller must follow up with 'isync'. */
+	__asm__ __volatile__ ("iitlb  %0\n" : : "a" (entry) );
+}
+
+static inline void invalidate_dtlb_entry_no_isync (unsigned entry)
+{
+	/* Caller must follow up with 'isync'. */
+	__asm__ __volatile__ ("idtlb  %0\n" : : "a" (entry) );
+}
+
+static inline void set_itlbcfg_register (unsigned long val)
+{
+	__asm__ __volatile__("wsr  %0, "__stringify(ITLBCFG)"\n\t" "isync\n\t"
+			     : : "a" (val));
+}
+
+static inline void set_dtlbcfg_register (unsigned long val)
+{
+	__asm__ __volatile__("wsr  %0, "__stringify(DTLBCFG)"; dsync\n\t"
+	    		     : : "a" (val));
+}
+
+static inline void set_ptevaddr_register (unsigned long val)
+{
+	__asm__ __volatile__(" wsr  %0, "__stringify(PTEVADDR)"; isync\n"
+			     : : "a" (val));
+}
+
+static inline unsigned long read_ptevaddr_register (void)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("rsr  %0, "__stringify(PTEVADDR)"\n\t" : "=a" (tmp));
+	return tmp;
+}
+
+static inline void write_dtlb_entry (pte_t entry, int way)
+{
+	__asm__ __volatile__("wdtlb  %1, %0; dsync\n\t"
+			     : : "r" (way), "r" (entry) );
+}
+
+static inline void write_itlb_entry (pte_t entry, int way)
+{
+	__asm__ __volatile__("witlb  %1, %0; isync\n\t"
+	                     : : "r" (way), "r" (entry) );
+}
+
+static inline void invalidate_page_directory (void)
+{
+	invalidate_dtlb_entry (DTLB_WAY_PGD);
+	invalidate_dtlb_entry (DTLB_WAY_PGD+1);
+	invalidate_dtlb_entry (DTLB_WAY_PGD+2);
+}
+
+static inline void invalidate_itlb_mapping (unsigned address)
+{
+	unsigned long tlb_entry;
+	if (((tlb_entry = itlb_probe(address)) & (1 << ITLB_HIT_BIT)) != 0)
+		invalidate_itlb_entry(tlb_entry);
+}
+
+static inline void invalidate_dtlb_mapping (unsigned address)
+{
+	unsigned long tlb_entry;
+	if (((tlb_entry = dtlb_probe(address)) & (1 << DTLB_HIT_BIT)) != 0)
+		invalidate_dtlb_entry(tlb_entry);
+}
+
+#define check_pgt_cache()	do { } while (0)
+
+
+/*
+ * DO NOT USE THESE FUNCTIONS.  These instructions aren't part of the Xtensa
+ * ISA and exist only for test purposes..
+ * You may find it helpful for MMU debugging, however.
+ *
+ * 'at' is the unmodified input register
+ * 'as' is the output register, as follows (specific to the Linux config):
+ *
+ *      as[31..12] contain the virtual address
+ *      as[11..08] are meaningless
+ *      as[07..00] contain the asid
+ */
+
+static inline unsigned long read_dtlb_virtual (int way)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("rdtlb0  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+	return tmp;
+}
+
+static inline unsigned long read_dtlb_translation (int way)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("rdtlb1  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+	return tmp;
+}
+
+static inline unsigned long read_itlb_virtual (int way)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("ritlb0  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+	return tmp;
+}
+
+static inline unsigned long read_itlb_translation (int way)
+{
+	unsigned long tmp;
+	__asm__ __volatile__("ritlb1  %0, %1\n\t" : "=a" (tmp), "+a" (way));
+	return tmp;
+}
+
+#endif	/* __ASSEMBLY__ */
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_TLBFLUSH_H */
diff --git a/arch/xtensa/include/asm/topology.h b/arch/xtensa/include/asm/topology.h
new file mode 100644
index 0000000..7309e38
--- /dev/null
+++ b/arch/xtensa/include/asm/topology.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/topology.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TOPOLOGY_H
+#define _XTENSA_TOPOLOGY_H
+
+#include <asm-generic/topology.h>
+
+#endif	/* _XTENSA_TOPOLOGY_H */
diff --git a/arch/xtensa/include/asm/types.h b/arch/xtensa/include/asm/types.h
new file mode 100644
index 0000000..c89569a
--- /dev/null
+++ b/arch/xtensa/include/asm/types.h
@@ -0,0 +1,42 @@
+/*
+ * include/asm-xtensa/types.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_TYPES_H
+#define _XTENSA_TYPES_H
+
+#include <asm-generic/int-ll64.h>
+
+#ifdef __ASSEMBLY__
+# define __XTENSA_UL(x)		(x)
+# define __XTENSA_UL_CONST(x)	x
+#else
+# define __XTENSA_UL(x)		((unsigned long)(x))
+# define __XTENSA_UL_CONST(x)	x##UL
+#endif
+
+#ifndef __ASSEMBLY__
+
+typedef unsigned short umode_t;
+
+/*
+ * These aren't exported outside the kernel to avoid name space clashes
+ */
+#ifdef __KERNEL__
+
+#define BITS_PER_LONG 32
+
+/* Dma addresses are 32-bits wide.  */
+
+typedef u32 dma_addr_t;
+
+#endif	/* __KERNEL__ */
+#endif
+
+#endif	/* _XTENSA_TYPES_H */
diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h
new file mode 100644
index 0000000..b852842
--- /dev/null
+++ b/arch/xtensa/include/asm/uaccess.h
@@ -0,0 +1,500 @@
+/*
+ * include/asm-xtensa/uaccess.h
+ *
+ * User space memory access functions
+ *
+ * These routines provide basic accessing functions to the user memory
+ * space for the kernel. This header file provides fuctions such as:
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UACCESS_H
+#define _XTENSA_UACCESS_H
+
+#include <linux/errno.h>
+
+#define VERIFY_READ    0
+#define VERIFY_WRITE   1
+
+#ifdef __ASSEMBLY__
+
+#include <asm/current.h>
+#include <asm/asm-offsets.h>
+#include <asm/processor.h>
+#include <asm/types.h>
+
+/*
+ * These assembly macros mirror the C macros that follow below.  They
+ * should always have identical functionality.  See
+ * arch/xtensa/kernel/sys.S for usage.
+ */
+
+#define KERNEL_DS	0
+#define USER_DS		1
+
+#define get_ds		(KERNEL_DS)
+
+/*
+ * get_fs reads current->thread.current_ds into a register.
+ * On Entry:
+ * 	<ad>	anything
+ * 	<sp>	stack
+ * On Exit:
+ * 	<ad>	contains current->thread.current_ds
+ */
+	.macro	get_fs	ad, sp
+	GET_CURRENT(\ad,\sp)
+	l32i	\ad, \ad, THREAD_CURRENT_DS
+	.endm
+
+/*
+ * set_fs sets current->thread.current_ds to some value.
+ * On Entry:
+ *	<at>	anything (temp register)
+ *	<av>	value to write
+ *	<sp>	stack
+ * On Exit:
+ *	<at>	destroyed (actually, current)
+ *	<av>	preserved, value to write
+ */
+	.macro	set_fs	at, av, sp
+	GET_CURRENT(\at,\sp)
+	s32i	\av, \at, THREAD_CURRENT_DS
+	.endm
+
+/*
+ * kernel_ok determines whether we should bypass addr/size checking.
+ * See the equivalent C-macro version below for clarity.
+ * On success, kernel_ok branches to a label indicated by parameter
+ * <success>.  This implies that the macro falls through to the next
+ * insruction on an error.
+ *
+ * Note that while this macro can be used independently, we designed
+ * in for optimal use in the access_ok macro below (i.e., we fall
+ * through on error).
+ *
+ * On Entry:
+ * 	<at>		anything (temp register)
+ * 	<success>	label to branch to on success; implies
+ * 			fall-through macro on error
+ * 	<sp>		stack pointer
+ * On Exit:
+ * 	<at>		destroyed (actually, current->thread.current_ds)
+ */
+
+#if ((KERNEL_DS != 0) || (USER_DS == 0))
+# error Assembly macro kernel_ok fails
+#endif
+	.macro	kernel_ok  at, sp, success
+	get_fs	\at, \sp
+	beqz	\at, \success
+	.endm
+
+/*
+ * user_ok determines whether the access to user-space memory is allowed.
+ * See the equivalent C-macro version below for clarity.
+ *
+ * On error, user_ok branches to a label indicated by parameter
+ * <error>.  This implies that the macro falls through to the next
+ * instruction on success.
+ *
+ * Note that while this macro can be used independently, we designed
+ * in for optimal use in the access_ok macro below (i.e., we fall
+ * through on success).
+ *
+ * On Entry:
+ * 	<aa>	register containing memory address
+ * 	<as>	register containing memory size
+ * 	<at>	temp register
+ * 	<error>	label to branch to on error; implies fall-through
+ * 		macro on success
+ * On Exit:
+ * 	<aa>	preserved
+ * 	<as>	preserved
+ * 	<at>	destroyed (actually, (TASK_SIZE + 1 - size))
+ */
+	.macro	user_ok	aa, as, at, error
+	movi	\at, __XTENSA_UL_CONST(TASK_SIZE)
+	bgeu	\as, \at, \error
+	sub	\at, \at, \as
+	bgeu	\aa, \at, \error
+	.endm
+
+/*
+ * access_ok determines whether a memory access is allowed.  See the
+ * equivalent C-macro version below for clarity.
+ *
+ * On error, access_ok branches to a label indicated by parameter
+ * <error>.  This implies that the macro falls through to the next
+ * instruction on success.
+ *
+ * Note that we assume success is the common case, and we optimize the
+ * branch fall-through case on success.
+ *
+ * On Entry:
+ * 	<aa>	register containing memory address
+ * 	<as>	register containing memory size
+ * 	<at>	temp register
+ * 	<sp>
+ * 	<error>	label to branch to on error; implies fall-through
+ * 		macro on success
+ * On Exit:
+ * 	<aa>	preserved
+ * 	<as>	preserved
+ * 	<at>	destroyed
+ */
+	.macro	access_ok  aa, as, at, sp, error
+	kernel_ok  \at, \sp, .Laccess_ok_\@
+	user_ok    \aa, \as, \at, \error
+.Laccess_ok_\@:
+	.endm
+
+#else /* __ASSEMBLY__ not defined */
+
+#include <linux/sched.h>
+#include <asm/types.h>
+
+/*
+ * The fs value determines whether argument validity checking should
+ * be performed or not.  If get_fs() == USER_DS, checking is
+ * performed, with get_fs() == KERNEL_DS, checking is bypassed.
+ *
+ * For historical reasons (Data Segment Register?), these macros are
+ * grossly misnamed.
+ */
+
+#define KERNEL_DS	((mm_segment_t) { 0 })
+#define USER_DS		((mm_segment_t) { 1 })
+
+#define get_ds()	(KERNEL_DS)
+#define get_fs()	(current->thread.current_ds)
+#define set_fs(val)	(current->thread.current_ds = (val))
+
+#define segment_eq(a,b)	((a).seg == (b).seg)
+
+#define __kernel_ok (segment_eq(get_fs(), KERNEL_DS))
+#define __user_ok(addr,size) (((size) <= TASK_SIZE)&&((addr) <= TASK_SIZE-(size)))
+#define __access_ok(addr,size) (__kernel_ok || __user_ok((addr),(size)))
+#define access_ok(type,addr,size) __access_ok((unsigned long)(addr),(size))
+
+/*
+ * These are the main single-value transfer routines.  They
+ * automatically use the right size if we just have the right pointer
+ * type.
+ *
+ * This gets kind of ugly. We want to return _two_ values in
+ * "get_user()" and yet we don't want to do any pointers, because that
+ * is too much of a performance impact. Thus we have a few rather ugly
+ * macros here, and hide all the uglyness from the user.
+ *
+ * Careful to not
+ * (a) re-use the arguments for side effects (sizeof is ok)
+ * (b) require any knowledge of processes at this stage
+ */
+#define put_user(x,ptr)	__put_user_check((x),(ptr),sizeof(*(ptr)))
+#define get_user(x,ptr) __get_user_check((x),(ptr),sizeof(*(ptr)))
+
+/*
+ * The "__xxx" versions of the user access functions are versions that
+ * do not verify the address space, that must have been done previously
+ * with a separate "access_ok()" call (this is used when we do multiple
+ * accesses to the same area of user memory).
+ */
+#define __put_user(x,ptr) __put_user_nocheck((x),(ptr),sizeof(*(ptr)))
+#define __get_user(x,ptr) __get_user_nocheck((x),(ptr),sizeof(*(ptr)))
+
+
+extern long __put_user_bad(void);
+
+#define __put_user_nocheck(x,ptr,size)			\
+({							\
+	long __pu_err;					\
+	__put_user_size((x),(ptr),(size),__pu_err);	\
+	__pu_err;					\
+})
+
+#define __put_user_check(x,ptr,size)				\
+({								\
+	long __pu_err = -EFAULT;				\
+	__typeof__(*(ptr)) *__pu_addr = (ptr);			\
+	if (access_ok(VERIFY_WRITE,__pu_addr,size))		\
+		__put_user_size((x),__pu_addr,(size),__pu_err);	\
+	__pu_err;						\
+})
+
+#define __put_user_size(x,ptr,size,retval)				\
+do {									\
+	int __cb;							\
+	retval = 0;							\
+	switch (size) {							\
+        case 1: __put_user_asm(x,ptr,retval,1,"s8i",__cb);  break;	\
+        case 2: __put_user_asm(x,ptr,retval,2,"s16i",__cb); break;	\
+        case 4: __put_user_asm(x,ptr,retval,4,"s32i",__cb); break;	\
+        case 8: {							\
+		     __typeof__(*ptr) __v64 = x;			\
+		     retval = __copy_to_user(ptr,&__v64,8);		\
+		     break;						\
+	        }							\
+	default: __put_user_bad();					\
+	}								\
+} while (0)
+
+
+/*
+ * Consider a case of a user single load/store would cause both an
+ * unaligned exception and an MMU-related exception (unaligned
+ * exceptions happen first):
+ *
+ * User code passes a bad variable ptr to a system call.
+ * Kernel tries to access the variable.
+ * Unaligned exception occurs.
+ * Unaligned exception handler tries to make aligned accesses.
+ * Double exception occurs for MMU-related cause (e.g., page not mapped).
+ * do_page_fault() thinks the fault address belongs to the kernel, not the
+ * user, and panics.
+ *
+ * The kernel currently prohibits user unaligned accesses.  We use the
+ * __check_align_* macros to check for unaligned addresses before
+ * accessing user space so we don't crash the kernel.  Both
+ * __put_user_asm and __get_user_asm use these alignment macros, so
+ * macro-specific labels such as 0f, 1f, %0, %2, and %3 must stay in
+ * sync.
+ */
+
+#define __check_align_1  ""
+
+#define __check_align_2				\
+	"   _bbci.l %3,  0, 1f		\n"	\
+	"   movi    %0, %4		\n"	\
+	"   _j      2f			\n"
+
+#define __check_align_4				\
+	"   _bbsi.l %3,  0, 0f		\n"	\
+	"   _bbci.l %3,  1, 1f		\n"	\
+	"0: movi    %0, %4		\n"	\
+	"   _j      2f			\n"
+
+
+/*
+ * We don't tell gcc that we are accessing memory, but this is OK
+ * because we do not write to any memory gcc knows about, so there
+ * are no aliasing issues.
+ *
+ * WARNING: If you modify this macro at all, verify that the
+ * __check_align_* macros still work.
+ */
+#define __put_user_asm(x, addr, err, align, insn, cb)	\
+   __asm__ __volatile__(				\
+	__check_align_##align				\
+	"1: "insn"  %2, %3, 0		\n"		\
+	"2:				\n"		\
+	"   .section  .fixup,\"ax\"	\n"		\
+	"   .align 4			\n"		\
+	"4:				\n"		\
+	"   .long  2b			\n"		\
+	"5:				\n"		\
+	"   l32r   %1, 4b		\n"		\
+        "   movi   %0, %4		\n"		\
+        "   jx     %1			\n"		\
+	"   .previous			\n"		\
+	"   .section  __ex_table,\"a\"	\n"		\
+	"   .long	1b, 5b		\n"		\
+	"   .previous"					\
+	:"=r" (err), "=r" (cb)				\
+	:"r" ((int)(x)), "r" (addr), "i" (-EFAULT), "0" (err))
+
+#define __get_user_nocheck(x,ptr,size)				\
+({								\
+	long __gu_err, __gu_val;				\
+	__get_user_size(__gu_val,(ptr),(size),__gu_err);	\
+	(x) = (__typeof__(*(ptr)))__gu_val;			\
+	__gu_err;						\
+})
+
+#define __get_user_check(x,ptr,size)					\
+({									\
+	long __gu_err = -EFAULT, __gu_val = 0;				\
+	const __typeof__(*(ptr)) *__gu_addr = (ptr);			\
+	if (access_ok(VERIFY_READ,__gu_addr,size))			\
+		__get_user_size(__gu_val,__gu_addr,(size),__gu_err);	\
+	(x) = (__typeof__(*(ptr)))__gu_val;				\
+	__gu_err;							\
+})
+
+extern long __get_user_bad(void);
+
+#define __get_user_size(x,ptr,size,retval)				\
+do {									\
+	int __cb;							\
+	retval = 0;							\
+        switch (size) {							\
+          case 1: __get_user_asm(x,ptr,retval,1,"l8ui",__cb);  break;	\
+          case 2: __get_user_asm(x,ptr,retval,2,"l16ui",__cb); break;	\
+          case 4: __get_user_asm(x,ptr,retval,4,"l32i",__cb);  break;	\
+          case 8: retval = __copy_from_user(&x,ptr,8);    break;	\
+          default: (x) = __get_user_bad();				\
+        }								\
+} while (0)
+
+
+/*
+ * WARNING: If you modify this macro at all, verify that the
+ * __check_align_* macros still work.
+ */
+#define __get_user_asm(x, addr, err, align, insn, cb) \
+   __asm__ __volatile__(			\
+	__check_align_##align			\
+	"1: "insn"  %2, %3, 0		\n"	\
+	"2:				\n"	\
+	"   .section  .fixup,\"ax\"	\n"	\
+	"   .align 4			\n"	\
+	"4:				\n"	\
+	"   .long  2b			\n"	\
+	"5:				\n"	\
+	"   l32r   %1, 4b		\n"	\
+	"   movi   %2, 0		\n"	\
+        "   movi   %0, %4		\n"	\
+        "   jx     %1			\n"	\
+	"   .previous			\n"	\
+	"   .section  __ex_table,\"a\"	\n"	\
+	"   .long	1b, 5b		\n"	\
+	"   .previous"				\
+	:"=r" (err), "=r" (cb), "=r" (x)	\
+	:"r" (addr), "i" (-EFAULT), "0" (err))
+
+
+/*
+ * Copy to/from user space
+ */
+
+/*
+ * We use a generic, arbitrary-sized copy subroutine.  The Xtensa
+ * architecture would cause heavy code bloat if we tried to inline
+ * these functions and provide __constant_copy_* equivalents like the
+ * i386 versions.  __xtensa_copy_user is quite efficient.  See the
+ * .fixup section of __xtensa_copy_user for a discussion on the
+ * X_zeroing equivalents for Xtensa.
+ */
+
+extern unsigned __xtensa_copy_user(void *to, const void *from, unsigned n);
+#define __copy_user(to,from,size) __xtensa_copy_user(to,from,size)
+
+
+static inline unsigned long
+__generic_copy_from_user_nocheck(void *to, const void *from, unsigned long n)
+{
+	return __copy_user(to,from,n);
+}
+
+static inline unsigned long
+__generic_copy_to_user_nocheck(void *to, const void *from, unsigned long n)
+{
+	return __copy_user(to,from,n);
+}
+
+static inline unsigned long
+__generic_copy_to_user(void *to, const void *from, unsigned long n)
+{
+	prefetch(from);
+	if (access_ok(VERIFY_WRITE, to, n))
+		return __copy_user(to,from,n);
+	return n;
+}
+
+static inline unsigned long
+__generic_copy_from_user(void *to, const void *from, unsigned long n)
+{
+	prefetchw(to);
+	if (access_ok(VERIFY_READ, from, n))
+		return __copy_user(to,from,n);
+	else
+		memset(to, 0, n);
+	return n;
+}
+
+#define copy_to_user(to,from,n) __generic_copy_to_user((to),(from),(n))
+#define copy_from_user(to,from,n) __generic_copy_from_user((to),(from),(n))
+#define __copy_to_user(to,from,n) __generic_copy_to_user_nocheck((to),(from),(n))
+#define __copy_from_user(to,from,n) __generic_copy_from_user_nocheck((to),(from),(n))
+#define __copy_to_user_inatomic __copy_to_user
+#define __copy_from_user_inatomic __copy_from_user
+
+
+/*
+ * We need to return the number of bytes not cleared.  Our memset()
+ * returns zero if a problem occurs while accessing user-space memory.
+ * In that event, return no memory cleared.  Otherwise, zero for
+ * success.
+ */
+
+static inline unsigned long
+__xtensa_clear_user(void *addr, unsigned long size)
+{
+	if ( ! memset(addr, 0, size) )
+		return size;
+	return 0;
+}
+
+static inline unsigned long
+clear_user(void *addr, unsigned long size)
+{
+	if (access_ok(VERIFY_WRITE, addr, size))
+		return __xtensa_clear_user(addr, size);
+	return size ? -EFAULT : 0;
+}
+
+#define __clear_user  __xtensa_clear_user
+
+
+extern long __strncpy_user(char *, const char *, long);
+#define __strncpy_from_user __strncpy_user
+
+static inline long
+strncpy_from_user(char *dst, const char *src, long count)
+{
+	if (access_ok(VERIFY_READ, src, 1))
+		return __strncpy_from_user(dst, src, count);
+	return -EFAULT;
+}
+
+
+#define strlen_user(str) strnlen_user((str), TASK_SIZE - 1)
+
+/*
+ * Return the size of a string (including the ending 0!)
+ */
+extern long __strnlen_user(const char *, long);
+
+static inline long strnlen_user(const char *str, long len)
+{
+	unsigned long top = __kernel_ok ? ~0UL : TASK_SIZE - 1;
+
+	if ((unsigned long)str > top)
+		return 0;
+	return __strnlen_user(str, len);
+}
+
+
+struct exception_table_entry
+{
+	unsigned long insn, fixup;
+};
+
+/* Returns 0 if exception not found and fixup.unit otherwise.  */
+
+extern unsigned long search_exception_table(unsigned long addr);
+extern void sort_exception_table(void);
+
+/* Returns the new pc */
+#define fixup_exception(map_reg, fixup_unit, pc)                \
+({                                                              \
+	fixup_unit;                                             \
+})
+
+#endif	/* __ASSEMBLY__ */
+#endif	/* _XTENSA_UACCESS_H */
diff --git a/arch/xtensa/include/asm/ucontext.h b/arch/xtensa/include/asm/ucontext.h
new file mode 100644
index 0000000..94c94ed
--- /dev/null
+++ b/arch/xtensa/include/asm/ucontext.h
@@ -0,0 +1,22 @@
+/*
+ * include/asm-xtensa/ucontext.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UCONTEXT_H
+#define _XTENSA_UCONTEXT_H
+
+struct ucontext {
+	unsigned long	  uc_flags;
+	struct ucontext  *uc_link;
+	stack_t		  uc_stack;
+	struct sigcontext uc_mcontext;
+	sigset_t	  uc_sigmask;	/* mask last for extensibility */
+};
+
+#endif /* _XTENSA_UCONTEXT_H */
diff --git a/arch/xtensa/include/asm/unaligned.h b/arch/xtensa/include/asm/unaligned.h
new file mode 100644
index 0000000..8f3424f
--- /dev/null
+++ b/arch/xtensa/include/asm/unaligned.h
@@ -0,0 +1,29 @@
+/*
+ * Xtensa doesn't handle unaligned accesses efficiently.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+#ifndef _ASM_XTENSA_UNALIGNED_H
+#define _ASM_XTENSA_UNALIGNED_H
+
+#ifdef __XTENSA_EL__
+# include <linux/unaligned/le_memmove.h>
+# include <linux/unaligned/be_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_le
+# define put_unaligned	__put_unaligned_le
+#elif defined(__XTENSA_EB__)
+# include <linux/unaligned/be_memmove.h>
+# include <linux/unaligned/le_byteshift.h>
+# include <linux/unaligned/generic.h>
+# define get_unaligned	__get_unaligned_be
+# define put_unaligned	__put_unaligned_be
+#else
+# error processor byte order undefined!
+#endif
+
+#endif	/* _ASM_XTENSA_UNALIGNED_H */
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
new file mode 100644
index 0000000..c092c8f
--- /dev/null
+++ b/arch/xtensa/include/asm/unistd.h
@@ -0,0 +1,735 @@
+/*
+ * include/asm-xtensa/unistd.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_UNISTD_H
+#define _XTENSA_UNISTD_H
+
+#ifndef __SYSCALL
+# define __SYSCALL(nr,func,nargs)
+#endif
+
+#define __NR_spill				  0
+__SYSCALL(  0, sys_ni_syscall, 0)
+#define __NR_xtensa				  1
+__SYSCALL(  1, sys_ni_syscall, 0)
+#define __NR_available4				  2
+__SYSCALL(  2, sys_ni_syscall, 0)
+#define __NR_available5				  3
+__SYSCALL(  3, sys_ni_syscall, 0)
+#define __NR_available6				  4
+__SYSCALL(  4, sys_ni_syscall, 0)
+#define __NR_available7				  5
+__SYSCALL(  5, sys_ni_syscall, 0)
+#define __NR_available8				  6
+__SYSCALL(  6, sys_ni_syscall, 0)
+#define __NR_available9				  7
+__SYSCALL(  7, sys_ni_syscall, 0)
+
+/* File Operations */
+
+#define __NR_open 				  8
+__SYSCALL(  8, sys_open, 3)
+#define __NR_close 				  9
+__SYSCALL(  9, sys_close, 1)
+#define __NR_dup 				 10
+__SYSCALL( 10, sys_dup, 1)
+#define __NR_dup2 				 11
+__SYSCALL( 11, sys_dup2, 2)
+#define __NR_read 				 12
+__SYSCALL( 12, sys_read, 3)
+#define __NR_write 				 13
+__SYSCALL( 13, sys_write, 3)
+#define __NR_select 				 14
+__SYSCALL( 14, sys_select, 5)
+#define __NR_lseek 				 15
+__SYSCALL( 15, sys_lseek, 3)
+#define __NR_poll 				 16
+__SYSCALL( 16, sys_poll, 3)
+#define __NR__llseek				 17
+__SYSCALL( 17, sys_llseek, 5)
+#define __NR_epoll_wait 			 18
+__SYSCALL( 18, sys_epoll_wait, 4)
+#define __NR_epoll_ctl 				 19
+__SYSCALL( 19, sys_epoll_ctl, 4)
+#define __NR_epoll_create 			 20
+__SYSCALL( 20, sys_epoll_create, 1)
+#define __NR_creat 				 21
+__SYSCALL( 21, sys_creat, 2)
+#define __NR_truncate 				 22
+__SYSCALL( 22, sys_truncate, 2)
+#define __NR_ftruncate 				 23
+__SYSCALL( 23, sys_ftruncate, 2)
+#define __NR_readv 				 24
+__SYSCALL( 24, sys_readv, 3)
+#define __NR_writev 				 25
+__SYSCALL( 25, sys_writev, 3)
+#define __NR_fsync 				 26
+__SYSCALL( 26, sys_fsync, 1)
+#define __NR_fdatasync 				 27
+__SYSCALL( 27, sys_fdatasync, 1)
+#define __NR_truncate64 			 28
+__SYSCALL( 28, sys_truncate64, 2)
+#define __NR_ftruncate64 			 29
+__SYSCALL( 29, sys_ftruncate64, 2)
+#define __NR_pread64 				 30
+__SYSCALL( 30, sys_pread64, 6)
+#define __NR_pwrite64 				 31
+__SYSCALL( 31, sys_pwrite64, 6)
+
+#define __NR_link 				 32
+__SYSCALL( 32, sys_link, 2)
+#define __NR_rename 				 33
+__SYSCALL( 33, sys_rename, 2)
+#define __NR_symlink 				 34
+__SYSCALL( 34, sys_symlink, 2)
+#define __NR_readlink 				 35
+__SYSCALL( 35, sys_readlink, 3)
+#define __NR_mknod 				 36
+__SYSCALL( 36, sys_mknod, 3)
+#define __NR_pipe 				 37
+__SYSCALL( 37, xtensa_pipe, 1)
+#define __NR_unlink 				 38
+__SYSCALL( 38, sys_unlink, 1)
+#define __NR_rmdir 				 39
+__SYSCALL( 39, sys_rmdir, 1)
+
+#define __NR_mkdir 				 40
+__SYSCALL( 40, sys_mkdir, 2)
+#define __NR_chdir 				 41
+__SYSCALL( 41, sys_chdir, 1)
+#define __NR_fchdir 				 42
+__SYSCALL( 42, sys_fchdir, 1)
+#define __NR_getcwd 				 43
+__SYSCALL( 43, sys_getcwd, 2)
+
+#define __NR_chmod 				 44
+__SYSCALL( 44, sys_chmod, 2)
+#define __NR_chown 				 45
+__SYSCALL( 45, sys_chown, 3)
+#define __NR_stat 				 46
+__SYSCALL( 46, sys_newstat, 2)
+#define __NR_stat64 				 47
+__SYSCALL( 47, sys_stat64, 2)
+
+#define __NR_lchown 				 48
+__SYSCALL( 48, sys_lchown, 3)
+#define __NR_lstat 				 49
+__SYSCALL( 49, sys_newlstat, 2)
+#define __NR_lstat64 				 50
+__SYSCALL( 50, sys_lstat64, 2)
+#define __NR_available51			 51
+__SYSCALL( 51, sys_ni_syscall, 0)
+
+#define __NR_fchmod 				 52
+__SYSCALL( 52, sys_fchmod, 2)
+#define __NR_fchown 				 53
+__SYSCALL( 53, sys_fchown, 3)
+#define __NR_fstat 				 54
+__SYSCALL( 54, sys_newfstat, 2)
+#define __NR_fstat64 				 55
+__SYSCALL( 55, sys_fstat64, 2)
+
+#define __NR_flock 				 56
+__SYSCALL( 56, sys_flock, 2)
+#define __NR_access 				 57
+__SYSCALL( 57, sys_access, 2)
+#define __NR_umask 				 58
+__SYSCALL( 58, sys_umask, 1)
+#define __NR_getdents 				 59
+__SYSCALL( 59, sys_getdents, 3)
+#define __NR_getdents64 			 60
+__SYSCALL( 60, sys_getdents64, 3)
+#define __NR_fcntl64 				 61
+__SYSCALL( 61, sys_fcntl64, 3)
+#define __NR_available62			 62
+__SYSCALL( 62, sys_ni_syscall, 0)
+#define __NR_fadvise64_64 			 63
+__SYSCALL( 63, xtensa_fadvise64_64, 6)
+#define __NR_utime				 64	/* glibc 2.3.3 ?? */
+__SYSCALL( 64, sys_utime, 2)
+#define __NR_utimes 				 65
+__SYSCALL( 65, sys_utimes, 2)
+#define __NR_ioctl 				 66
+__SYSCALL( 66, sys_ioctl, 3)
+#define __NR_fcntl 				 67
+__SYSCALL( 67, sys_fcntl, 3)
+
+#define __NR_setxattr 				 68
+__SYSCALL( 68, sys_setxattr, 5)
+#define __NR_getxattr 				 69
+__SYSCALL( 69, sys_getxattr, 4)
+#define __NR_listxattr 				 70
+__SYSCALL( 70, sys_listxattr, 3)
+#define __NR_removexattr 			 71
+__SYSCALL( 71, sys_removexattr, 2)
+#define __NR_lsetxattr 				 72
+__SYSCALL( 72, sys_lsetxattr, 5)
+#define __NR_lgetxattr 				 73
+__SYSCALL( 73, sys_lgetxattr, 4)
+#define __NR_llistxattr 			 74
+__SYSCALL( 74, sys_llistxattr, 3)
+#define __NR_lremovexattr 			 75
+__SYSCALL( 75, sys_lremovexattr, 2)
+#define __NR_fsetxattr 				 76
+__SYSCALL( 76, sys_fsetxattr, 5)
+#define __NR_fgetxattr 				 77
+__SYSCALL( 77, sys_fgetxattr, 4)
+#define __NR_flistxattr 			 78
+__SYSCALL( 78, sys_flistxattr, 3)
+#define __NR_fremovexattr 			 79
+__SYSCALL( 79, sys_fremovexattr, 2)
+
+/* File Map / Shared Memory Operations */
+
+#define __NR_mmap2 				 80
+__SYSCALL( 80, xtensa_mmap2, 6)
+#define __NR_munmap 				 81
+__SYSCALL( 81, sys_munmap, 2)
+#define __NR_mprotect 				 82
+__SYSCALL( 82, sys_mprotect, 3)
+#define __NR_brk 				 83
+__SYSCALL( 83, sys_brk, 1)
+#define __NR_mlock 				 84
+__SYSCALL( 84, sys_mlock, 2)
+#define __NR_munlock 				 85
+__SYSCALL( 85, sys_munlock, 2)
+#define __NR_mlockall 				 86
+__SYSCALL( 86, sys_mlockall, 1)
+#define __NR_munlockall 			 87
+__SYSCALL( 87, sys_munlockall, 0)
+#define __NR_mremap 				 88
+__SYSCALL( 88, sys_mremap, 4)
+#define __NR_msync 				 89
+__SYSCALL( 89, sys_msync, 3)
+#define __NR_mincore 				 90
+__SYSCALL( 90, sys_mincore, 3)
+#define __NR_madvise 				 91
+__SYSCALL( 91, sys_madvise, 3)
+#define __NR_shmget				 92
+__SYSCALL( 92, sys_shmget, 4)
+#define __NR_shmat				 93
+__SYSCALL( 93, xtensa_shmat, 4)
+#define __NR_shmctl				 94
+__SYSCALL( 94, sys_shmctl, 4)
+#define __NR_shmdt				 95
+__SYSCALL( 95, sys_shmdt, 4)
+
+/* Socket Operations */
+
+#define __NR_socket 				 96
+__SYSCALL( 96, sys_socket, 3)
+#define __NR_setsockopt 			 97
+__SYSCALL( 97, sys_setsockopt, 5)
+#define __NR_getsockopt 			 98
+__SYSCALL( 98, sys_getsockopt, 5)
+#define __NR_shutdown 				 99
+__SYSCALL( 99, sys_shutdown, 2)
+
+#define __NR_bind 				100
+__SYSCALL(100, sys_bind, 3)
+#define __NR_connect 				101
+__SYSCALL(101, sys_connect, 3)
+#define __NR_listen 				102
+__SYSCALL(102, sys_listen, 2)
+#define __NR_accept 				103
+__SYSCALL(103, sys_accept, 3)
+
+#define __NR_getsockname 			104
+__SYSCALL(104, sys_getsockname, 3)
+#define __NR_getpeername 			105
+__SYSCALL(105, sys_getpeername, 3)
+#define __NR_sendmsg 				106
+__SYSCALL(106, sys_sendmsg, 3)
+#define __NR_recvmsg 				107
+__SYSCALL(107, sys_recvmsg, 3)
+#define __NR_send 				108
+__SYSCALL(108, sys_send, 4)
+#define __NR_recv 				109
+__SYSCALL(109, sys_recv, 4)
+#define __NR_sendto 				110
+__SYSCALL(110, sys_sendto, 6)
+#define __NR_recvfrom 				111
+__SYSCALL(111, sys_recvfrom, 6)
+
+#define __NR_socketpair 			112
+__SYSCALL(112, sys_socketpair, 4)
+#define __NR_sendfile 				113
+__SYSCALL(113, sys_sendfile, 4)
+#define __NR_sendfile64 			114
+__SYSCALL(114, sys_sendfile64, 4)
+#define __NR_available115			115
+__SYSCALL(115, sys_ni_syscall, 0)
+
+/* Process Operations */
+
+#define __NR_clone 				116
+__SYSCALL(116, xtensa_clone, 5)
+#define __NR_execve 				117
+__SYSCALL(117, xtensa_execve, 3)
+#define __NR_exit 				118
+__SYSCALL(118, sys_exit, 1)
+#define __NR_exit_group 			119
+__SYSCALL(119, sys_exit_group, 1)
+#define __NR_getpid 				120
+__SYSCALL(120, sys_getpid, 0)
+#define __NR_wait4 				121
+__SYSCALL(121, sys_wait4, 4)
+#define __NR_waitid 				122
+__SYSCALL(122, sys_waitid, 5)
+#define __NR_kill 				123
+__SYSCALL(123, sys_kill, 2)
+#define __NR_tkill 				124
+__SYSCALL(124, sys_tkill, 2)
+#define __NR_tgkill 				125
+__SYSCALL(125, sys_tgkill, 3)
+#define __NR_set_tid_address 			126
+__SYSCALL(126, sys_set_tid_address, 1)
+#define __NR_gettid 				127
+__SYSCALL(127, sys_gettid, 0)
+#define __NR_setsid 				128
+__SYSCALL(128, sys_setsid, 0)
+#define __NR_getsid 				129
+__SYSCALL(129, sys_getsid, 1)
+#define __NR_prctl 				130
+__SYSCALL(130, sys_prctl, 5)
+#define __NR_personality 			131
+__SYSCALL(131, sys_personality, 1)
+#define __NR_getpriority 			132
+__SYSCALL(132, sys_getpriority, 2)
+#define __NR_setpriority 			133
+__SYSCALL(133, sys_setpriority, 3)
+#define __NR_setitimer 				134
+__SYSCALL(134, sys_setitimer, 3)
+#define __NR_getitimer 				135
+__SYSCALL(135, sys_getitimer, 2)
+#define __NR_setuid 				136
+__SYSCALL(136, sys_setuid, 1)
+#define __NR_getuid 				137
+__SYSCALL(137, sys_getuid, 0)
+#define __NR_setgid 				138
+__SYSCALL(138, sys_setgid, 1)
+#define __NR_getgid 				139
+__SYSCALL(139, sys_getgid, 0)
+#define __NR_geteuid 				140
+__SYSCALL(140, sys_geteuid, 0)
+#define __NR_getegid 				141
+__SYSCALL(141, sys_getegid, 0)
+#define __NR_setreuid 				142
+__SYSCALL(142, sys_setreuid, 2)
+#define __NR_setregid 				143
+__SYSCALL(143, sys_setregid, 2)
+#define __NR_setresuid 				144
+__SYSCALL(144, sys_setresuid, 3)
+#define __NR_getresuid 				145
+__SYSCALL(145, sys_getresuid, 3)
+#define __NR_setresgid 				146
+__SYSCALL(146, sys_setresgid, 3)
+#define __NR_getresgid 				147
+__SYSCALL(147, sys_getresgid, 3)
+#define __NR_setpgid 				148
+__SYSCALL(148, sys_setpgid, 2)
+#define __NR_getpgid 				149
+__SYSCALL(149, sys_getpgid, 1)
+#define __NR_getppid 				150
+__SYSCALL(150, sys_getppid, 0)
+#define __NR_getpgrp				151
+__SYSCALL(151, sys_getpgrp, 0)
+
+#define __NR_reserved152 			152	/* set_thread_area */
+__SYSCALL(152, sys_ni_syscall, 0)
+#define __NR_reserved153 			153	/* get_thread_area */
+__SYSCALL(153, sys_ni_syscall, 0)
+#define __NR_times 				154
+__SYSCALL(154, sys_times, 1)
+#define __NR_acct 				155
+__SYSCALL(155, sys_acct, 1)
+#define __NR_sched_setaffinity 			156
+__SYSCALL(156, sys_sched_setaffinity, 3)
+#define __NR_sched_getaffinity 			157
+__SYSCALL(157, sys_sched_getaffinity, 3)
+#define __NR_capget 				158
+__SYSCALL(158, sys_capget, 2)
+#define __NR_capset 				159
+__SYSCALL(159, sys_capset, 2)
+#define __NR_ptrace 				160
+__SYSCALL(160, sys_ptrace, 4)
+#define __NR_semtimedop				161
+__SYSCALL(161, sys_semtimedop, 5)
+#define __NR_semget				162
+__SYSCALL(162, sys_semget, 4)
+#define __NR_semop				163
+__SYSCALL(163, sys_semop, 4)
+#define __NR_semctl				164
+__SYSCALL(164, sys_semctl, 4)
+#define __NR_available165			165
+__SYSCALL(165, sys_ni_syscall, 0)
+#define __NR_msgget				166
+__SYSCALL(166, sys_msgget, 4)
+#define __NR_msgsnd				167
+__SYSCALL(167, sys_msgsnd, 4)
+#define __NR_msgrcv				168
+__SYSCALL(168, sys_msgrcv, 4)
+#define __NR_msgctl				169
+__SYSCALL(169, sys_msgctl, 4)
+#define __NR_available170			170
+__SYSCALL(170, sys_ni_syscall, 0)
+#define __NR_available171			171
+__SYSCALL(171, sys_ni_syscall, 0)
+
+/* File System */
+
+#define __NR_mount 				172
+__SYSCALL(172, sys_mount, 5)
+#define __NR_swapon 				173
+__SYSCALL(173, sys_swapon, 2)
+#define __NR_chroot 				174
+__SYSCALL(174, sys_chroot, 1)
+#define __NR_pivot_root 			175
+__SYSCALL(175, sys_pivot_root, 2)
+#define __NR_umount 				176
+__SYSCALL(176, sys_umount, 2)
+#define __NR_swapoff 				177
+__SYSCALL(177, sys_swapoff, 1)
+#define __NR_sync 				178
+__SYSCALL(178, sys_sync, 0)
+#define __NR_available179			179
+__SYSCALL(179, sys_ni_syscall, 0)
+#define __NR_setfsuid 				180
+__SYSCALL(180, sys_setfsuid, 1)
+#define __NR_setfsgid 				181
+__SYSCALL(181, sys_setfsgid, 1)
+#define __NR_sysfs 				182
+__SYSCALL(182, sys_sysfs, 3)
+#define __NR_ustat 				183
+__SYSCALL(183, sys_ustat, 2)
+#define __NR_statfs 				184
+__SYSCALL(184, sys_statfs, 2)
+#define __NR_fstatfs 				185
+__SYSCALL(185, sys_fstatfs, 2)
+#define __NR_statfs64 				186
+__SYSCALL(186, sys_statfs64, 3)
+#define __NR_fstatfs64 				187
+__SYSCALL(187, sys_fstatfs64, 3)
+
+/* System */
+
+#define __NR_setrlimit 				188
+__SYSCALL(188, sys_setrlimit, 2)
+#define __NR_getrlimit 				189
+__SYSCALL(189, sys_getrlimit, 2)
+#define __NR_getrusage 				190
+__SYSCALL(190, sys_getrusage, 2)
+#define __NR_futex				191
+__SYSCALL(191, sys_futex, 5)
+#define __NR_gettimeofday 			192
+__SYSCALL(192, sys_gettimeofday, 2)
+#define __NR_settimeofday 			193
+__SYSCALL(193, sys_settimeofday, 2)
+#define __NR_adjtimex 				194
+__SYSCALL(194, sys_adjtimex, 1)
+#define __NR_nanosleep	 			195
+__SYSCALL(195, sys_nanosleep, 2)
+#define __NR_getgroups 				196
+__SYSCALL(196, sys_getgroups, 2)
+#define __NR_setgroups 				197
+__SYSCALL(197, sys_setgroups, 2)
+#define __NR_sethostname 			198
+__SYSCALL(198, sys_sethostname, 2)
+#define __NR_setdomainname 			199
+__SYSCALL(199, sys_setdomainname, 2)
+#define __NR_syslog 				200
+__SYSCALL(200, sys_syslog, 3)
+#define __NR_vhangup 				201
+__SYSCALL(201, sys_vhangup, 0)
+#define __NR_uselib 				202
+__SYSCALL(202, sys_uselib, 1)
+#define __NR_reboot 				203
+__SYSCALL(203, sys_reboot, 3)
+#define __NR_quotactl 				204
+__SYSCALL(204, sys_quotactl, 4)
+#define __NR_nfsservctl 			205
+__SYSCALL(205, sys_nfsservctl, 3)
+#define __NR__sysctl 				206
+__SYSCALL(206, sys_sysctl, 1)
+#define __NR_bdflush 				207
+__SYSCALL(207, sys_bdflush, 2)
+#define __NR_uname 				208
+__SYSCALL(208, sys_newuname, 1)
+#define __NR_sysinfo 				209
+__SYSCALL(209, sys_sysinfo, 1)
+#define __NR_init_module 			210
+__SYSCALL(210, sys_init_module, 2)
+#define __NR_delete_module 			211
+__SYSCALL(211, sys_delete_module, 1)
+
+#define __NR_sched_setparam 			212
+__SYSCALL(212, sys_sched_setparam, 2)
+#define __NR_sched_getparam 			213
+__SYSCALL(213, sys_sched_getparam, 2)
+#define __NR_sched_setscheduler 		214
+__SYSCALL(214, sys_sched_setscheduler, 3)
+#define __NR_sched_getscheduler 		215
+__SYSCALL(215, sys_sched_getscheduler, 1)
+#define __NR_sched_get_priority_max 		216
+__SYSCALL(216, sys_sched_get_priority_max, 1)
+#define __NR_sched_get_priority_min 		217
+__SYSCALL(217, sys_sched_get_priority_min, 1)
+#define __NR_sched_rr_get_interval 		218
+__SYSCALL(218, sys_sched_rr_get_interval, 2)
+#define __NR_sched_yield 			219
+__SYSCALL(219, sys_sched_yield, 0)
+#define __NR_available222 			222
+__SYSCALL(222, sys_ni_syscall, 0)
+
+/* Signal Handling */
+
+#define __NR_restart_syscall 			223
+__SYSCALL(223, sys_restart_syscall, 0)
+#define __NR_sigaltstack 			224
+__SYSCALL(224, xtensa_sigaltstack, 2)
+#define __NR_rt_sigreturn 			225
+__SYSCALL(225, xtensa_rt_sigreturn, 1)
+#define __NR_rt_sigaction 			226
+__SYSCALL(226, sys_rt_sigaction, 4)
+#define __NR_rt_sigprocmask 			227
+__SYSCALL(227, sys_rt_sigprocmask, 4)
+#define __NR_rt_sigpending 			228
+__SYSCALL(228, sys_rt_sigpending, 2)
+#define __NR_rt_sigtimedwait 			229
+__SYSCALL(229, sys_rt_sigtimedwait, 4)
+#define __NR_rt_sigqueueinfo 			230
+__SYSCALL(230, sys_rt_sigqueueinfo, 3)
+#define __NR_rt_sigsuspend 			231
+__SYSCALL(231, xtensa_rt_sigsuspend, 2)
+
+/* Message */
+
+#define __NR_mq_open 				232
+__SYSCALL(232, sys_mq_open, 4)
+#define __NR_mq_unlink 				233
+__SYSCALL(233, sys_mq_unlink, 1)
+#define __NR_mq_timedsend 			234
+__SYSCALL(234, sys_mq_timedsend, 5)
+#define __NR_mq_timedreceive 			235
+__SYSCALL(235, sys_mq_timedreceive, 5)
+#define __NR_mq_notify 				236
+__SYSCALL(236, sys_mq_notify, 2)
+#define __NR_mq_getsetattr 			237
+__SYSCALL(237, sys_mq_getsetattr, 3)
+#define __NR_available238			238
+__SYSCALL(238, sys_ni_syscall, 0)
+
+/* IO */
+
+#define __NR_io_setup 				239
+__SYSCALL(239, sys_io_setup, 2)
+#define __NR_io_destroy 			240
+__SYSCALL(240, sys_io_destroy, 1)
+#define __NR_io_submit 				241
+__SYSCALL(241, sys_io_submit, 3)
+#define __NR_io_getevents 			242
+__SYSCALL(242, sys_io_getevents, 5)
+#define __NR_io_cancel 				243
+__SYSCALL(243, sys_io_cancel, 3)
+#define __NR_clock_settime 			244
+__SYSCALL(244, sys_clock_settime, 2)
+#define __NR_clock_gettime 			245
+__SYSCALL(245, sys_clock_gettime, 2)
+#define __NR_clock_getres 			246
+__SYSCALL(246, sys_clock_getres, 2)
+#define __NR_clock_nanosleep 			247
+__SYSCALL(247, sys_clock_nanosleep, 4)
+
+/* Timer */
+
+#define __NR_timer_create 			248
+__SYSCALL(248, sys_timer_create, 3)
+#define __NR_timer_delete 			249
+__SYSCALL(249, sys_timer_delete, 1)
+#define __NR_timer_settime 			250
+__SYSCALL(250, sys_timer_settime, 4)
+#define __NR_timer_gettime 			251
+__SYSCALL(251, sys_timer_gettime, 2)
+#define __NR_timer_getoverrun 			252
+__SYSCALL(252, sys_timer_getoverrun, 1)
+
+/* System */
+
+#define __NR_reserved244 			253
+__SYSCALL(253, sys_ni_syscall, 0)
+#define __NR_lookup_dcookie 			254
+__SYSCALL(254, sys_lookup_dcookie, 4)
+#define __NR_available255			255
+__SYSCALL(255, sys_ni_syscall, 0)
+#define __NR_add_key 				256
+__SYSCALL(256, sys_add_key, 5)
+#define __NR_request_key 			257
+__SYSCALL(257, sys_request_key, 5)
+#define __NR_keyctl 				258
+__SYSCALL(258, sys_keyctl, 5)
+#define __NR_available259			259
+__SYSCALL(259, sys_ni_syscall, 0)
+
+
+#define __NR_readahead				260
+__SYSCALL(260, sys_readahead, 5)
+#define __NR_remap_file_pages			261
+__SYSCALL(261, sys_remap_file_pages, 5)
+#define __NR_migrate_pages			262
+__SYSCALL(262, sys_migrate_pages, 0)
+#define __NR_mbind				263
+__SYSCALL(263, sys_mbind, 6)
+#define __NR_get_mempolicy			264
+__SYSCALL(264, sys_get_mempolicy, 5)
+#define __NR_set_mempolicy			265
+__SYSCALL(265, sys_set_mempolicy, 3)
+#define __NR_unshare				266
+__SYSCALL(266, sys_unshare, 1)
+#define __NR_move_pages				267
+__SYSCALL(267, sys_move_pages, 0)
+#define __NR_splice				268
+__SYSCALL(268, sys_splice, 0)
+#define __NR_tee				269
+__SYSCALL(269, sys_tee, 0)
+#define __NR_vmsplice				270
+__SYSCALL(270, sys_vmsplice, 0)
+#define __NR_available271			271
+__SYSCALL(271, sys_ni_syscall, 0)
+
+#define __NR_pselect6				272
+__SYSCALL(272, sys_pselect6, 0)
+#define __NR_ppoll				273
+__SYSCALL(273, sys_ppoll, 0)
+#define __NR_epoll_pwait			274
+__SYSCALL(274, sys_epoll_pwait, 0)
+#define __NR_available275			275
+__SYSCALL(275, sys_ni_syscall, 0)
+
+#define __NR_inotify_init			276
+__SYSCALL(276, sys_inotify_init, 0)
+#define __NR_inotify_add_watch			277
+__SYSCALL(277, sys_inotify_add_watch, 3)
+#define __NR_inotify_rm_watch			278
+__SYSCALL(278, sys_inotify_rm_watch, 2)
+#define __NR_available279			279
+__SYSCALL(279, sys_ni_syscall, 0)
+
+#define __NR_getcpu				280
+__SYSCALL(280, sys_getcpu, 0)
+#define __NR_kexec_load				281
+__SYSCALL(281, sys_ni_syscall, 0)
+
+#define __NR_ioprio_set				282
+__SYSCALL(282, sys_ioprio_set, 2)
+#define __NR_ioprio_get				283
+__SYSCALL(283, sys_ioprio_get, 3)
+
+#define __NR_set_robust_list			284
+__SYSCALL(284, sys_set_robust_list, 3)
+#define __NR_get_robust_list			285
+__SYSCALL(285, sys_get_robust_list, 3)
+#define __NR_reserved286			286	/* sync_file_rangeX */
+__SYSCALL(286, sys_ni_syscall, 3)
+#define __NR_available287			287
+__SYSCALL(287, sys_faccessat, 0)
+
+/* Relative File Operations */
+
+#define __NR_openat				288
+__SYSCALL(288, sys_openat, 4)
+#define __NR_mkdirat				289
+__SYSCALL(289, sys_mkdirat, 3)
+#define __NR_mknodat				290
+__SYSCALL(290, sys_mknodat, 4)
+#define __NR_unlinkat				291
+__SYSCALL(291, sys_unlinkat, 3)
+#define __NR_renameat				292
+__SYSCALL(292, sys_renameat, 4)
+#define __NR_linkat				293
+__SYSCALL(293, sys_linkat, 5)
+#define __NR_symlinkat				294
+__SYSCALL(294, sys_symlinkat, 3)
+#define __NR_readlinkat				295
+__SYSCALL(295, sys_readlinkat, 4)
+#define __NR_utimensat				296
+__SYSCALL(296, sys_utimensat, 0)
+#define __NR_fchownat				297
+__SYSCALL(297, sys_fchownat, 5)
+#define __NR_futimesat				298
+__SYSCALL(298, sys_futimesat, 4)
+#define __NR_fstatat64				299
+__SYSCALL(299, sys_fstatat64, 0)
+#define __NR_fchmodat				300
+__SYSCALL(300, sys_fchmodat, 4)
+#define __NR_faccessat				301
+__SYSCALL(301, sys_faccessat, 4)
+#define __NR_available302			302
+__SYSCALL(302, sys_ni_syscall, 0)
+#define __NR_available303			303
+__SYSCALL(303, sys_ni_syscall, 0)
+
+#define __NR_signalfd				304
+__SYSCALL(304, sys_signalfd, 3)
+/*  305 was __NR_timerfd  */
+__SYSCALL(305, sys_ni_syscall, 0)
+#define __NR_eventfd				306
+__SYSCALL(306, sys_eventfd, 1)
+
+#define __NR_syscall_count			307
+
+/*
+ * sysxtensa syscall handler
+ *
+ * int sysxtensa (SYS_XTENSA_ATOMIC_SET,     ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_ADD,     ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_EXG_ADD, ptr, val,    unused);
+ * int sysxtensa (SYS_XTENSA_ATOMIC_CMP_SWP, ptr, oldval, newval);
+ *        a2            a6                   a3    a4      a5
+ */
+
+#define SYS_XTENSA_RESERVED               0     /* don't use this */
+#define SYS_XTENSA_ATOMIC_SET             1     /* set variable */
+#define SYS_XTENSA_ATOMIC_EXG_ADD         2     /* exchange memory and add */
+#define SYS_XTENSA_ATOMIC_ADD             3     /* add to memory */
+#define SYS_XTENSA_ATOMIC_CMP_SWP         4     /* compare and swap */
+
+#define SYS_XTENSA_COUNT                  5     /* count */
+
+#ifdef __KERNEL__
+
+/*
+ * "Conditional" syscalls
+ *
+ * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
+ * but it doesn't work on all toolchains, so we just do it by hand
+ */
+#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");
+
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_UTIME
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+#define __ARCH_WANT_SYS_GETPGRP
+
+/* 
+ * Ignore legacy system calls in the checksyscalls.sh script
+ */
+
+#define __IGNORE_fork				/* use clone */
+#define __IGNORE_time
+#define __IGNORE_alarm				/* use setitimer */
+#define __IGNORE_pause
+#define __IGNORE_mmap				/* use mmap2 */
+#define __IGNORE_vfork				/* use clone */
+#define __IGNORE_fadvise64			/* use fadvise64_64 */
+
+#endif	/* __KERNEL__ */
+#endif	/* _XTENSA_UNISTD_H */
diff --git a/arch/xtensa/include/asm/user.h b/arch/xtensa/include/asm/user.h
new file mode 100644
index 0000000..2c3ed23
--- /dev/null
+++ b/arch/xtensa/include/asm/user.h
@@ -0,0 +1,20 @@
+/*
+ * include/asm-xtensa/user.h
+ *
+ * Xtensa Processor version.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_USER_H
+#define _XTENSA_USER_H
+
+/* This file usually defines a 'struct user' structure. However, it it only
+ * used for a.out file, which are not supported on Xtensa.
+ */
+
+#endif	/* _XTENSA_USER_H */
diff --git a/arch/xtensa/include/asm/vga.h b/arch/xtensa/include/asm/vga.h
new file mode 100644
index 0000000..1fd8cab
--- /dev/null
+++ b/arch/xtensa/include/asm/vga.h
@@ -0,0 +1,19 @@
+/*
+ * include/asm-xtensa/vga.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_VGA_H
+#define _XTENSA_VGA_H
+
+#define VGA_MAP_MEM(x,s) (unsigned long)phys_to_virt(x)
+
+#define vga_readb(x)	(*(x))
+#define vga_writeb(x,y)	(*(y) = (x))
+
+#endif
diff --git a/arch/xtensa/include/asm/xor.h b/arch/xtensa/include/asm/xor.h
new file mode 100644
index 0000000..e7b1f08
--- /dev/null
+++ b/arch/xtensa/include/asm/xor.h
@@ -0,0 +1,16 @@
+/*
+ * include/asm-xtensa/xor.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 - 2005 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_XOR_H
+#define _XTENSA_XOR_H
+
+#include <asm-generic/xor.h>
+
+#endif