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-rw-r--r--arch/cris/boot/.gitignore2
-rw-r--r--arch/cris/boot/Makefile24
-rw-r--r--arch/cris/boot/compressed/Makefile38
-rw-r--r--arch/cris/boot/compressed/README24
-rw-r--r--arch/cris/boot/compressed/decompress_v10.lds30
-rw-r--r--arch/cris/boot/compressed/decompress_v32.lds30
-rw-r--r--arch/cris/boot/compressed/head_v10.S126
-rw-r--r--arch/cris/boot/compressed/head_v32.S145
-rw-r--r--arch/cris/boot/compressed/misc.c391
-rw-r--r--arch/cris/boot/rescue/Makefile47
-rw-r--r--arch/cris/boot/rescue/head_v10.S360
-rw-r--r--arch/cris/boot/rescue/head_v32.S26
-rw-r--r--arch/cris/boot/rescue/kimagerescue.S143
-rw-r--r--arch/cris/boot/rescue/rescue_v10.lds20
-rw-r--r--arch/cris/boot/rescue/rescue_v32.lds43
-rw-r--r--arch/cris/boot/rescue/testrescue.S24
-rw-r--r--arch/cris/boot/tools/build.c287
17 files changed, 1760 insertions, 0 deletions
diff --git a/arch/cris/boot/.gitignore b/arch/cris/boot/.gitignore
new file mode 100644
index 0000000..171a085
--- /dev/null
+++ b/arch/cris/boot/.gitignore
@@ -0,0 +1,2 @@
+Image
+zImage
diff --git a/arch/cris/boot/Makefile b/arch/cris/boot/Makefile
new file mode 100644
index 0000000..144f3af
--- /dev/null
+++ b/arch/cris/boot/Makefile
@@ -0,0 +1,24 @@
+#
+# arch/cris/boot/Makefile
+#
+
+objcopyflags-$(CONFIG_ETRAX_ARCH_V10) += -R .note -R .comment
+objcopyflags-$(CONFIG_ETRAX_ARCH_V32) += --remove-section=.bss
+
+OBJCOPYFLAGS = -O binary $(objcopyflags-y)
+
+
+subdir- := compressed rescue
+targets := Image
+
+$(obj)/Image: vmlinux FORCE
+ $(call if_changed,objcopy)
+ @echo ' Kernel: $@ is ready'
+
+$(obj)/compressed/vmlinux: $(obj)/Image FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/compressed $@
+ $(Q)$(MAKE) $(build)=$(obj)/rescue $(obj)/rescue/rescue.bin
+
+$(obj)/zImage: $(obj)/compressed/vmlinux
+ @cp $< $@
+ @echo ' Kernel: $@ is ready'
diff --git a/arch/cris/boot/compressed/Makefile b/arch/cris/boot/compressed/Makefile
new file mode 100644
index 0000000..8fe9338
--- /dev/null
+++ b/arch/cris/boot/compressed/Makefile
@@ -0,0 +1,38 @@
+#
+# arch/cris/boot/compressed/Makefile
+#
+
+asflags-y += $(LINUXINCLUDE)
+ccflags-y += -O2 $(LINUXINCLUDE)
+
+# asflags-$(CONFIG_ETRAX_ARCH_V32) += -I$(srctree)/include/asm/mach \
+# -I$(srctree)/include/asm/arch
+# ccflags-$(CONFIG_ETRAX_ARCH_V32) += -O2 -I$(srctree)/include/asm/mach
+# -I$(srctree)/include/asm/arch
+
+arch-$(CONFIG_ETRAX_ARCH_V10) = v10
+arch-$(CONFIG_ETRAX_ARCH_V32) = v32
+
+ldflags-y += -T $(srctree)/$(src)/decompress_$(arch-y).lds
+
+OBJECTS-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o
+OBJECTS-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o
+OBJECTS= $(OBJECTS-y) $(obj)/misc.o
+OBJCOPYFLAGS = -O binary --remove-section=.bss
+
+quiet_cmd_image = BUILD $@
+cmd_image = cat $(obj)/decompress.bin $(obj)/piggy.gz > $@
+
+targets := vmlinux piggy.gz decompress.o decompress.bin
+
+$(obj)/decompress.o: $(OBJECTS) FORCE
+ $(call if_changed,ld)
+
+$(obj)/decompress.bin: $(obj)/decompress.o FORCE
+ $(call if_changed,objcopy)
+
+$(obj)/vmlinux: $(obj)/piggy.gz $(obj)/decompress.bin FORCE
+ $(call if_changed,image)
+
+$(obj)/piggy.gz: $(obj)/../Image FORCE
+ $(call if_changed,gzip)
diff --git a/arch/cris/boot/compressed/README b/arch/cris/boot/compressed/README
new file mode 100644
index 0000000..182c5d7
--- /dev/null
+++ b/arch/cris/boot/compressed/README
@@ -0,0 +1,24 @@
+Creation of the self-extracting compressed kernel image (vmlinuz)
+-----------------------------------------------------------------
+
+This can be slightly confusing because it's a process with many steps.
+
+The kernel object built by the arch/etrax100/Makefile, vmlinux, is split
+by that makefile into text and data binary files, vmlinux.text and
+vmlinux.data.
+
+Those files together with a ROM filesystem can be catted together and
+burned into a flash or executed directly at the DRAM origin.
+
+They can also be catted together and compressed with gzip, which is what
+happens in this makefile. Together they make up piggy.img.
+
+The decompressor is built into the file decompress.o. It is turned into
+the binary file decompress.bin, which is catted together with piggy.img
+into the file vmlinuz. It can be executed in an arbitrary place in flash.
+
+Be careful - it assumes some things about free locations in DRAM. It
+assumes the DRAM starts at 0x40000000 and that it is at least 8 MB,
+so it puts its code at 0x40700000, and initial stack at 0x40800000.
+
+-Bjorn
diff --git a/arch/cris/boot/compressed/decompress_v10.lds b/arch/cris/boot/compressed/decompress_v10.lds
new file mode 100644
index 0000000..e80f459
--- /dev/null
+++ b/arch/cris/boot/compressed/decompress_v10.lds
@@ -0,0 +1,30 @@
+/* OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_FORMAT(elf32-cris)
+
+MEMORY
+ {
+ dram : ORIGIN = 0x40700000,
+ LENGTH = 0x00100000
+ }
+
+SECTIONS
+{
+ .text :
+ {
+ _stext = . ;
+ *(.text)
+ *(.rodata)
+ *(.rodata.*)
+ _etext = . ;
+ } > dram
+ .data :
+ {
+ *(.data)
+ _edata = . ;
+ } > dram
+ .bss :
+ {
+ *(.bss)
+ _end = ALIGN( 0x10 ) ;
+ } > dram
+}
diff --git a/arch/cris/boot/compressed/decompress_v32.lds b/arch/cris/boot/compressed/decompress_v32.lds
new file mode 100644
index 0000000..3c837fe
--- /dev/null
+++ b/arch/cris/boot/compressed/decompress_v32.lds
@@ -0,0 +1,30 @@
+/*#OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_ARCH (crisv32)
+
+MEMORY
+ {
+ dram : ORIGIN = 0x40700000,
+ LENGTH = 0x00100000
+ }
+
+SECTIONS
+{
+ .text :
+ {
+ _stext = . ;
+ *(.text)
+ *(.rodata)
+ *(.rodata.*)
+ _etext = . ;
+ } > dram
+ .data :
+ {
+ *(.data)
+ _edata = . ;
+ } > dram
+ .bss :
+ {
+ *(.bss)
+ _end = ALIGN( 0x10 ) ;
+ } > dram
+}
diff --git a/arch/cris/boot/compressed/head_v10.S b/arch/cris/boot/compressed/head_v10.S
new file mode 100644
index 0000000..9edb8ad
--- /dev/null
+++ b/arch/cris/boot/compressed/head_v10.S
@@ -0,0 +1,126 @@
+/*
+ * arch/cris/boot/compressed/head.S
+ *
+ * Copyright (C) 1999, 2001 Axis Communications AB
+ *
+ * Code that sets up the DRAM registers, calls the
+ * decompressor to unpack the piggybacked kernel, and jumps.
+ *
+ */
+
+#define ASSEMBLER_MACROS_ONLY
+#include <arch/sv_addr_ag.h>
+
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+
+ ;; Exported symbols
+
+ .globl input_data
+
+
+ .text
+
+ nop
+ di
+
+;; We need to initialze DRAM registers before we start using the DRAM
+
+ cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
+ beq dram_init_finished
+ nop
+
+#include "../../arch-v10/lib/dram_init.S"
+
+dram_init_finished:
+
+ ;; Initiate the PA and PB ports
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
+ move.b $r0, [R_PORT_PA_DATA]
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
+ move.b $r0, [R_PORT_PA_DIR]
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
+ move.b $r0, [R_PORT_PB_DATA]
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
+ move.b $r0, [R_PORT_PB_DIR]
+
+ ;; Setup the stack to a suitably high address.
+ ;; We assume 8 MB is the minimum DRAM in an eLinux
+ ;; product and put the sp at the top for now.
+
+ move.d 0x40800000, $sp
+
+ ;; Figure out where the compressed piggyback image is
+ ;; in the flash (since we wont try to copy it to DRAM
+ ;; before unpacking). It is at _edata, but in flash.
+ ;; Use (_edata - basse) as offset to the current PC.
+
+basse: move.d $pc, $r5
+ and.d 0x7fffffff, $r5 ; strip any non-cache bit
+ subq 2, $r5 ; compensate for the move.d $pc instr
+ move.d $r5, $r0 ; save for later - flash address of 'basse'
+ add.d _edata, $r5
+ sub.d basse, $r5 ; $r5 = flash address of '_edata'
+
+ ;; Copy text+data to DRAM
+
+ move.d basse, $r1 ; destination
+ move.d _edata, $r2 ; end destination
+1: move.w [$r0+], $r3
+ move.w $r3, [$r1+]
+ cmp.d $r2, $r1
+ bcs 1b
+ nop
+
+ move.d $r5, [input_data] ; for the decompressor
+
+
+ ;; Clear the decompressors BSS (between _edata and _end)
+
+ moveq 0, $r0
+ move.d _edata, $r1
+ move.d _end, $r2
+1: move.w $r0, [$r1+]
+ cmp.d $r2, $r1
+ bcs 1b
+ nop
+
+ ;; Save command line magic and address.
+ move.d _cmd_line_magic, $r12
+ move.d $r10, [$r12]
+ move.d _cmd_line_addr, $r12
+ move.d $r11, [$r12]
+
+ ;; Do the decompression and save compressed size in inptr
+
+ jsr decompress_kernel
+
+ ;; Put start address of root partition in $r9 so the kernel can use it
+ ;; when mounting from flash
+
+ move.d [input_data], $r9 ; flash address of compressed kernel
+ add.d [inptr], $r9 ; size of compressed kernel
+
+ ;; Restore command line magic and address.
+ move.d _cmd_line_magic, $r10
+ move.d [$r10], $r10
+ move.d _cmd_line_addr, $r11
+ move.d [$r11], $r11
+
+ ;; Enter the decompressed kernel
+ move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized
+ jump 0x40004000 ; kernel is linked to this address
+
+ .data
+
+input_data:
+ .dword 0 ; used by the decompressor
+_cmd_line_magic:
+ .dword 0
+_cmd_line_addr:
+ .dword 0
+#include "../../arch-v10/lib/hw_settings.S"
diff --git a/arch/cris/boot/compressed/head_v32.S b/arch/cris/boot/compressed/head_v32.S
new file mode 100644
index 0000000..f483005
--- /dev/null
+++ b/arch/cris/boot/compressed/head_v32.S
@@ -0,0 +1,145 @@
+/*
+ * Code that sets up the DRAM registers, calls the
+ * decompressor to unpack the piggybacked kernel, and jumps.
+ *
+ * Copyright (C) 1999 - 2006, Axis Communications AB
+ */
+
+#define ASSEMBLER_MACROS_ONLY
+#include <hwregs/asm/reg_map_asm.h>
+#include <mach/startup.inc>
+
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+
+ ;; Exported symbols
+
+ .globl input_data
+
+ .text
+start:
+ di
+
+ ;; Start clocks for used blocks.
+ START_CLOCKS
+
+ ;; Initialize the DRAM registers.
+ cmp.d RAM_INIT_MAGIC, $r8 ; Already initialized?
+ beq dram_init_finished
+ nop
+
+#if defined CONFIG_ETRAXFS
+#include "../../arch-v32/mach-fs/dram_init.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../../arch-v32/mach-a3/dram_init.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif
+
+dram_init_finished:
+
+ GIO_INIT
+ ;; Setup the stack to a suitably high address.
+ ;; We assume 8 MB is the minimum DRAM and put
+ ;; the SP at the top for now.
+
+ move.d 0x40800000, $sp
+
+ ;; Figure out where the compressed piggyback image is.
+ ;; It is either in [NOR] flash (we don't want to copy it
+ ;; to DRAM before unpacking), or copied to DRAM
+ ;; by the [NAND] flash boot loader.
+ ;; The piggyback image is at _edata, but relative to where the
+ ;; image is actually located in memory, not where it is linked
+ ;; (the decompressor is linked at 0x40700000+ and runs there).
+ ;; Use (_edata - herami) as offset to the current PC.
+
+hereami:
+ lapcq ., $r5 ; get PC
+ and.d 0x7fffffff, $r5 ; strip any non-cache bit
+ move.d $r5, $r0 ; source address of 'herami'
+ add.d _edata, $r5
+ sub.d hereami, $r5 ; r5 = flash address of '_edata'
+ move.d hereami, $r1 ; destination
+
+ ;; Copy text+data to DRAM
+
+ move.d _edata, $r2 ; end destination
+1: move.w [$r0+], $r3 ; from herami+ source
+ move.w $r3, [$r1+] ; to hereami+ destination (linked address)
+ cmp.d $r2, $r1 ; finish when destination == _edata
+ bcs 1b
+ nop
+ move.d input_data, $r0 ; for the decompressor
+ move.d $r5, [$r0] ; for the decompressor
+
+ ;; Clear the decompressors BSS (between _edata and _end)
+
+ moveq 0, $r0
+ move.d _edata, $r1
+ move.d _end, $r2
+1: move.w $r0, [$r1+]
+ cmp.d $r2, $r1
+ bcs 1b
+ nop
+
+ ;; Save command line magic and address.
+ move.d _cmd_line_magic, $r0
+ move.d $r10, [$r0]
+ move.d _cmd_line_addr, $r0
+ move.d $r11, [$r0]
+
+ ;; Save boot source indicator
+ move.d _boot_source, $r0
+ move.d $r12, [$r0]
+
+ ;; Do the decompression and save compressed size in _inptr
+
+ jsr decompress_kernel
+ nop
+
+ ;; Restore boot source indicator
+ move.d _boot_source, $r12
+ move.d [$r12], $r12
+
+ ;; Restore command line magic and address.
+ move.d _cmd_line_magic, $r10
+ move.d [$r10], $r10
+ move.d _cmd_line_addr, $r11
+ move.d [$r11], $r11
+
+ ;; Put start address of root partition in r9 so the kernel can use it
+ ;; when mounting from flash
+ move.d input_data, $r0
+ move.d [$r0], $r9 ; flash address of compressed kernel
+ move.d inptr, $r0
+ add.d [$r0], $r9 ; size of compressed kernel
+ cmp.d 0x40000000, $r9 ; image in DRAM ?
+ blo enter_kernel ; no, must be [NOR] flash, jump
+ nop ; delay slot
+ and.d 0x001fffff, $r9 ; assume compressed kernel was < 2M
+
+enter_kernel:
+ ;; Enter the decompressed kernel
+ move.d RAM_INIT_MAGIC, $r8 ; Tell kernel that DRAM is initialized
+ jump 0x40004000 ; kernel is linked to this address
+ nop
+
+ .data
+
+input_data:
+ .dword 0 ; used by the decompressor
+_cmd_line_magic:
+ .dword 0
+_cmd_line_addr:
+ .dword 0
+_boot_source:
+ .dword 0
+
+#if defined CONFIG_ETRAXFS
+#include "../../arch-v32/mach-fs/hw_settings.S"
+#elif defined CONFIG_CRIS_MACH_ARTPEC3
+#include "../../arch-v32/mach-a3/hw_settings.S"
+#else
+#error Only ETRAXFS and ARTPEC-3 supported!
+#endif
diff --git a/arch/cris/boot/compressed/misc.c b/arch/cris/boot/compressed/misc.c
new file mode 100644
index 0000000..47bc190
--- /dev/null
+++ b/arch/cris/boot/compressed/misc.c
@@ -0,0 +1,391 @@
+/*
+ * misc.c
+ *
+ * This is a collection of several routines from gzip-1.0.3
+ * adapted for Linux.
+ *
+ * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
+ * puts by Nick Holloway 1993, better puts by Martin Mares 1995
+ * adaptation for Linux/CRIS Axis Communications AB, 1999
+ *
+ */
+
+/* where the piggybacked kernel image expects itself to live.
+ * it is the same address we use when we network load an uncompressed
+ * image into DRAM, and it is the address the kernel is linked to live
+ * at by vmlinux.lds.S
+ */
+
+#define KERNEL_LOAD_ADR 0x40004000
+
+#include <linux/types.h>
+
+#ifdef CONFIG_ETRAX_ARCH_V32
+#include <hwregs/reg_rdwr.h>
+#include <hwregs/reg_map.h>
+#include <hwregs/ser_defs.h>
+#include <hwregs/pinmux_defs.h>
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+#include <hwregs/clkgen_defs.h>
+#endif
+#else
+#include <arch/svinto.h>
+#endif
+
+/*
+ * gzip declarations
+ */
+
+#define OF(args) args
+#define STATIC static
+
+void *memset(void *s, int c, size_t n);
+void *memcpy(void *__dest, __const void *__src, size_t __n);
+
+#define memzero(s, n) memset((s), 0, (n))
+
+typedef unsigned char uch;
+typedef unsigned short ush;
+typedef unsigned long ulg;
+
+#define WSIZE 0x8000 /* Window size must be at least 32k, */
+ /* and a power of two */
+
+static uch *inbuf; /* input buffer */
+static uch window[WSIZE]; /* Sliding window buffer */
+
+unsigned inptr = 0; /* index of next byte to be processed in inbuf
+ * After decompression it will contain the
+ * compressed size, and head.S will read it.
+ */
+
+static unsigned outcnt = 0; /* bytes in output buffer */
+
+/* gzip flag byte */
+#define ASCII_FLAG 0x01 /* bit 0 set: file probably ascii text */
+#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
+#define EXTRA_FIELD 0x04 /* bit 2 set: extra field present */
+#define ORIG_NAME 0x08 /* bit 3 set: original file name present */
+#define COMMENT 0x10 /* bit 4 set: file comment present */
+#define ENCRYPTED 0x20 /* bit 5 set: file is encrypted */
+#define RESERVED 0xC0 /* bit 6,7: reserved */
+
+#define get_byte() (inbuf[inptr++])
+
+/* Diagnostic functions */
+#ifdef DEBUG
+# define Assert(cond, msg) do { \
+ if (!(cond)) \
+ error(msg); \
+ } while (0)
+# define Trace(x) fprintf x
+# define Tracev(x) do { \
+ if (verbose) \
+ fprintf x; \
+ } while (0)
+# define Tracevv(x) do { \
+ if (verbose > 1) \
+ fprintf x; \
+ } while (0)
+# define Tracec(c, x) do { \
+ if (verbose && (c)) \
+ fprintf x; \
+ } while (0)
+# define Tracecv(c, x) do { \
+ if (verbose > 1 && (c)) \
+ fprintf x; \
+ } while (0)
+#else
+# define Assert(cond, msg)
+# define Trace(x)
+# define Tracev(x)
+# define Tracevv(x)
+# define Tracec(c, x)
+# define Tracecv(c, x)
+#endif
+
+static void flush_window(void);
+static void error(char *m);
+static void puts(const char *);
+
+extern char *input_data; /* lives in head.S */
+
+static long bytes_out;
+static uch *output_data;
+static unsigned long output_ptr;
+
+/* the "heap" is put directly after the BSS ends, at end */
+
+extern int _end;
+static long free_mem_ptr = (long)&_end;
+static long free_mem_end_ptr;
+
+#include "../../../../../lib/inflate.c"
+
+/* decompressor info and error messages to serial console */
+
+#ifdef CONFIG_ETRAX_ARCH_V32
+static inline void serout(const char *s, reg_scope_instances regi_ser)
+{
+ reg_ser_rs_stat_din rs;
+ reg_ser_rw_dout dout = {.data = *s};
+
+ do {
+ rs = REG_RD(ser, regi_ser, rs_stat_din);
+ }
+ while (!rs.tr_rdy);/* Wait for transceiver. */
+
+ REG_WR(ser, regi_ser, rw_dout, dout);
+}
+#endif
+
+static void puts(const char *s)
+{
+#ifndef CONFIG_ETRAX_DEBUG_PORT_NULL
+ while (*s) {
+#ifdef CONFIG_ETRAX_DEBUG_PORT0
+#ifdef CONFIG_ETRAX_ARCH_V32
+ serout(s, regi_ser0);
+#else
+ while (!(*R_SERIAL0_STATUS & (1 << 5)))
+ ;
+ *R_SERIAL0_TR_DATA = *s++;
+#endif
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT1
+#ifdef CONFIG_ETRAX_ARCH_V32
+ serout(s, regi_ser1);
+#else
+ while (!(*R_SERIAL1_STATUS & (1 << 5)))
+ ;
+ *R_SERIAL1_TR_DATA = *s++;
+#endif
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT2
+#ifdef CONFIG_ETRAX_ARCH_V32
+ serout(s, regi_ser2);
+#else
+ while (!(*R_SERIAL2_STATUS & (1 << 5)))
+ ;
+ *R_SERIAL2_TR_DATA = *s++;
+#endif
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT3
+#ifdef CONFIG_ETRAX_ARCH_V32
+ serout(s, regi_ser3);
+#else
+ while (!(*R_SERIAL3_STATUS & (1 << 5)))
+ ;
+ *R_SERIAL3_TR_DATA = *s++;
+#endif
+#endif
+ *s++;
+ }
+/* CONFIG_ETRAX_DEBUG_PORT_NULL */
+#endif
+}
+
+void *memset(void *s, int c, size_t n)
+{
+ int i;
+ char *ss = (char*)s;
+
+ for (i=0;i<n;i++) ss[i] = c;
+
+ return s;
+}
+
+void *memcpy(void *__dest, __const void *__src, size_t __n)
+{
+ int i;
+ char *d = (char *)__dest, *s = (char *)__src;
+
+ for (i = 0; i < __n; i++)
+ d[i] = s[i];
+
+ return __dest;
+}
+
+/* ===========================================================================
+ * Write the output window window[0..outcnt-1] and update crc and bytes_out.
+ * (Used for the decompressed data only.)
+ */
+
+static void flush_window(void)
+{
+ ulg c = crc; /* temporary variable */
+ unsigned n;
+ uch *in, *out, ch;
+
+ in = window;
+ out = &output_data[output_ptr];
+ for (n = 0; n < outcnt; n++) {
+ ch = *out = *in;
+ out++;
+ in++;
+ c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
+ }
+ crc = c;
+ bytes_out += (ulg)outcnt;
+ output_ptr += (ulg)outcnt;
+ outcnt = 0;
+}
+
+static void error(char *x)
+{
+ puts("\n\n");
+ puts(x);
+ puts("\n\n -- System halted\n");
+
+ while(1); /* Halt */
+}
+
+void setup_normal_output_buffer(void)
+{
+ output_data = (char *)KERNEL_LOAD_ADR;
+}
+
+#ifdef CONFIG_ETRAX_ARCH_V32
+static inline void serial_setup(reg_scope_instances regi_ser)
+{
+ reg_ser_rw_xoff xoff;
+ reg_ser_rw_tr_ctrl tr_ctrl;
+ reg_ser_rw_rec_ctrl rec_ctrl;
+ reg_ser_rw_tr_baud_div tr_baud;
+ reg_ser_rw_rec_baud_div rec_baud;
+
+ /* Turn off XOFF. */
+ xoff = REG_RD(ser, regi_ser, rw_xoff);
+
+ xoff.chr = 0;
+ xoff.automatic = regk_ser_no;
+
+ REG_WR(ser, regi_ser, rw_xoff, xoff);
+
+ /* Set baudrate and stopbits. */
+ tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
+ rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
+ tr_baud = REG_RD(ser, regi_ser, rw_tr_baud_div);
+ rec_baud = REG_RD(ser, regi_ser, rw_rec_baud_div);
+
+ tr_ctrl.stop_bits = 1; /* 2 stop bits. */
+ tr_ctrl.en = 1; /* enable transmitter */
+ rec_ctrl.en = 1; /* enabler receiver */
+
+ /*
+ * The baudrate setup used to be a bit fishy, but now transmitter and
+ * receiver are both set to the intended baud rate, 115200.
+ * The magic value is 29.493 MHz.
+ */
+ tr_ctrl.base_freq = regk_ser_f29_493;
+ rec_ctrl.base_freq = regk_ser_f29_493;
+ tr_baud.div = (29493000 / 8) / 115200;
+ rec_baud.div = (29493000 / 8) / 115200;
+
+ REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
+ REG_WR(ser, regi_ser, rw_tr_baud_div, tr_baud);
+ REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
+ REG_WR(ser, regi_ser, rw_rec_baud_div, rec_baud);
+}
+#endif
+
+void decompress_kernel(void)
+{
+ char revision;
+ char compile_rev;
+
+#ifdef CONFIG_ETRAX_ARCH_V32
+ /* Need at least a CRISv32 to run. */
+ compile_rev = 32;
+#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT2) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT3)
+ reg_pinmux_rw_hwprot hwprot;
+
+#ifdef CONFIG_CRIS_MACH_ARTPEC3
+ reg_clkgen_rw_clk_ctrl clk_ctrl;
+
+ /* Enable corresponding clock region when serial 1..3 selected */
+
+ clk_ctrl = REG_RD(clkgen, regi_clkgen, rw_clk_ctrl);
+ clk_ctrl.sser_ser_dma6_7 = regk_clkgen_yes;
+ REG_WR(clkgen, regi_clkgen, rw_clk_ctrl, clk_ctrl);
+#endif
+
+ /* pinmux setup for ports 1..3 */
+ hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot);
+#endif
+
+
+#ifdef CONFIG_ETRAX_DEBUG_PORT0
+ serial_setup(regi_ser0);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT1
+ hwprot.ser1 = regk_pinmux_yes;
+ serial_setup(regi_ser1);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT2
+ hwprot.ser2 = regk_pinmux_yes;
+ serial_setup(regi_ser2);
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT3
+ hwprot.ser3 = regk_pinmux_yes;
+ serial_setup(regi_ser3);
+#endif
+#if defined(CONFIG_ETRAX_DEBUG_PORT1) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT2) || \
+ defined(CONFIG_ETRAX_DEBUG_PORT3)
+ REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot);
+#endif
+
+ /* input_data is set in head.S */
+ inbuf = input_data;
+#else /* CRISv10 */
+ /* Need at least a crisv10 to run. */
+ compile_rev = 10;
+
+ /* input_data is set in head.S */
+ inbuf = input_data;
+
+#ifdef CONFIG_ETRAX_DEBUG_PORT0
+ *R_SERIAL0_XOFF = 0;
+ *R_SERIAL0_BAUD = 0x99;
+ *R_SERIAL0_TR_CTRL = 0x40;
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT1
+ *R_SERIAL1_XOFF = 0;
+ *R_SERIAL1_BAUD = 0x99;
+ *R_SERIAL1_TR_CTRL = 0x40;
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT2
+ *R_GEN_CONFIG = 0x08;
+ *R_SERIAL2_XOFF = 0;
+ *R_SERIAL2_BAUD = 0x99;
+ *R_SERIAL2_TR_CTRL = 0x40;
+#endif
+#ifdef CONFIG_ETRAX_DEBUG_PORT3
+ *R_GEN_CONFIG = 0x100;
+ *R_SERIAL3_XOFF = 0;
+ *R_SERIAL3_BAUD = 0x99;
+ *R_SERIAL3_TR_CTRL = 0x40;
+#endif
+#endif
+
+ setup_normal_output_buffer();
+
+ makecrc();
+
+ __asm__ volatile ("move $vr,%0" : "=rm" (revision));
+ if (revision < compile_rev) {
+#ifdef CONFIG_ETRAX_ARCH_V32
+ puts("You need an ETRAX FS to run Linux 2.6/crisv32\n");
+#else
+ puts("You need an ETRAX 100LX to run linux 2.6\n");
+#endif
+ while(1);
+ }
+
+ puts("Uncompressing Linux...\n");
+ gunzip();
+ puts("Done. Now booting the kernel\n");
+}
diff --git a/arch/cris/boot/rescue/Makefile b/arch/cris/boot/rescue/Makefile
new file mode 100644
index 0000000..52bd0bd
--- /dev/null
+++ b/arch/cris/boot/rescue/Makefile
@@ -0,0 +1,47 @@
+#
+# Makefile for rescue (bootstrap) code
+#
+
+# CC = gcc-cris -mlinux -march=v32 $(LINUXINCLUDE)
+# ccflags-$(CONFIG_ETRAX_ARCH_V32) += -I$(srctree)/include/asm/arch/mach/ \
+# -I$(srctree)/include/asm/arch
+# asflags-y += -I $(srctree)/include/asm/arch/mach/ -I $(srctree)/include/asm/arch
+# LD = gcc-cris -mlinux -march=v32 -nostdlib
+
+asflags-y += $(LINUXINCLUDE)
+ccflags-y += -O2 $(LINUXINCLUDE)
+arch-$(CONFIG_ETRAX_ARCH_V10) = v10
+arch-$(CONFIG_ETRAX_ARCH_V32) = v32
+
+ldflags-y += -T $(srctree)/$(src)/rescue_$(arch-y).lds
+OBJCOPYFLAGS = -O binary --remove-section=.bss
+obj-$(CONFIG_ETRAX_ARCH_V32) = $(obj)/head_v32.o
+obj-$(CONFIG_ETRAX_ARCH_V10) = $(obj)/head_v10.o
+OBJECTS := $(obj-y)
+
+targets := rescue.o rescue.bin
+
+$(obj)/rescue.o: $(OBJECTS) FORCE
+ $(call if_changed,ld)
+
+$(obj)/rescue.bin: $(obj)/rescue.o FORCE
+ $(call if_changed,objcopy)
+ cp -p $(obj)/rescue.bin $(objtree)
+
+$(obj)/testrescue.bin: $(obj)/testrescue.o
+ $(OBJCOPY) $(OBJCOPYFLAGS) $(obj)/testrescue.o tr.bin
+# Pad it to 784 bytes
+ dd if=/dev/zero of=tmp2423 bs=1 count=784
+ cat tr.bin tmp2423 >testrescue_tmp.bin
+ dd if=testrescue_tmp.bin of=$(obj)/testrescue.bin bs=1 count=784
+ rm tr.bin tmp2423 testrescue_tmp.bin
+
+
+$(obj)/kimagerescue.bin: $(obj)/kimagerescue.o
+ $(OBJCOPY) $(OBJCOPYFLAGS) $(obj)/kimagerescue.o ktr.bin
+# Pad it to 784 bytes, that's what the rescue loader expects
+ dd if=/dev/zero of=tmp2423 bs=1 count=784
+ cat ktr.bin tmp2423 >kimagerescue_tmp.bin
+ dd if=kimagerescue_tmp.bin of=$(obj)/kimagerescue.bin bs=1 count=784
+ rm ktr.bin tmp2423 kimagerescue_tmp.bin
+
diff --git a/arch/cris/boot/rescue/head_v10.S b/arch/cris/boot/rescue/head_v10.S
new file mode 100644
index 0000000..2fafe24
--- /dev/null
+++ b/arch/cris/boot/rescue/head_v10.S
@@ -0,0 +1,360 @@
+/*
+ * Rescue code, made to reside at the beginning of the
+ * flash-memory. when it starts, it checks a partition
+ * table at the first sector after the rescue sector.
+ * the partition table was generated by the product builder
+ * script and contains offsets, lengths, types and checksums
+ * for each partition that this code should check.
+ *
+ * If any of the checksums fail, we assume the flash is so
+ * corrupt that we cant use it to boot into the ftp flash
+ * loader, and instead we initialize the serial port to
+ * receive a flash-loader and new flash image. we dont include
+ * any flash code here, but just accept a certain amount of
+ * bytes from the serial port and jump into it. the downloaded
+ * code is put in the cache.
+ *
+ * The partitiontable is designed so that it is transparent to
+ * code execution - it has a relative branch opcode in the
+ * beginning that jumps over it. each entry contains extra
+ * data so we can add stuff later.
+ *
+ * Partition table format:
+ *
+ * Code transparency:
+ *
+ * 2 bytes [opcode 'nop']
+ * 2 bytes [opcode 'di']
+ * 4 bytes [opcode 'ba <offset>', 8-bit or 16-bit version]
+ * 2 bytes [opcode 'nop', delay slot]
+ *
+ * Table validation (at +10):
+ *
+ * 2 bytes [magic/version word for partitiontable - 0xef, 0xbe]
+ * 2 bytes [length of all entries plus the end marker]
+ * 4 bytes [checksum for the partitiontable itself]
+ *
+ * Entries, each with the following format, last has offset -1:
+ *
+ * 4 bytes [offset in bytes, from start of flash]
+ * 4 bytes [length in bytes of partition]
+ * 4 bytes [checksum, simple longword sum]
+ * 2 bytes [partition type]
+ * 2 bytes [flags, only bit 0 used, ro/rw = 1/0]
+ * 16 bytes [reserved for future use]
+ *
+ * End marker
+ *
+ * 4 bytes [-1]
+ *
+ * 10 bytes [0, padding]
+ *
+ * Bit 0 in flags signifies RW or RO. The rescue code only bothers
+ * to check the checksum for RO partitions, since the others will
+ * change their data without updating the checksums. A 1 in bit 0
+ * means RO, 0 means RW. That way, it is possible to set a partition
+ * in RO mode initially, and later mark it as RW, since you can always
+ * write 0's to the flash.
+ *
+ * During the wait for serial input, the status LED will flash so the
+ * user knows something went wrong.
+ *
+ * Copyright (C) 1999-2007 Axis Communications AB
+ */
+
+#ifdef CONFIG_ETRAX_AXISFLASHMAP
+
+#define ASSEMBLER_MACROS_ONLY
+#include <arch/sv_addr_ag.h>
+
+ ;; The partitiontable is looked for at the first sector after the boot
+ ;; sector. Sector size is 65536 bytes in all flashes we use.
+
+#define PTABLE_START CONFIG_ETRAX_PTABLE_SECTOR
+#define PTABLE_MAGIC 0xbeef
+
+ ;; The normal Etrax100 on-chip boot ROM does serial boot at 0x380000f0.
+ ;; That is not where we put our downloaded serial boot-code.
+ ;; The length is enough for downloading code that loads the rest
+ ;; of itself (after having setup the DRAM etc).
+ ;; It is the same length as the on-chip ROM loads, so the same
+ ;; host loader can be used to load a rescued product as well as
+ ;; one booted through the Etrax serial boot code.
+
+#define CODE_START 0x40000000
+#define CODE_LENGTH 784
+
+#ifdef CONFIG_ETRAX_RESCUE_SER0
+#define SERXOFF R_SERIAL0_XOFF
+#define SERBAUD R_SERIAL0_BAUD
+#define SERRECC R_SERIAL0_REC_CTRL
+#define SERRDAT R_SERIAL0_REC_DATA
+#define SERSTAT R_SERIAL0_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER1
+#define SERXOFF R_SERIAL1_XOFF
+#define SERBAUD R_SERIAL1_BAUD
+#define SERRECC R_SERIAL1_REC_CTRL
+#define SERRDAT R_SERIAL1_REC_DATA
+#define SERSTAT R_SERIAL1_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER2
+#define SERXOFF R_SERIAL2_XOFF
+#define SERBAUD R_SERIAL2_BAUD
+#define SERRECC R_SERIAL2_REC_CTRL
+#define SERRDAT R_SERIAL2_REC_DATA
+#define SERSTAT R_SERIAL2_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER3
+#define SERXOFF R_SERIAL3_XOFF
+#define SERBAUD R_SERIAL3_BAUD
+#define SERRECC R_SERIAL3_REC_CTRL
+#define SERRDAT R_SERIAL3_REC_DATA
+#define SERSTAT R_SERIAL3_STATUS
+#endif
+
+#define NOP_DI 0xf025050f
+#define RAM_INIT_MAGIC 0x56902387
+
+ .text
+
+ ;; This is the entry point of the rescue code
+ ;; 0x80000000 if loaded in flash (as it should be)
+ ;; Since etrax actually starts at address 2 when booting from flash, we
+ ;; put a nop (2 bytes) here first so we dont accidentally skip the di
+
+ nop
+ di
+
+ jump in_cache ; enter cached area instead
+in_cache:
+
+
+ ;; First put a jump test to give a possibility of upgrading the
+ ;; rescue code without erasing/reflashing the sector.
+ ;; We put a longword of -1 here and if it is not -1, we jump using
+ ;; the value as jump target. Since we can always change 1's to 0's
+ ;; without erasing the sector, it is possible to add new
+ ;; code after this and altering the jumptarget in an upgrade.
+
+jtcd: move.d [jumptarget], $r0
+ cmp.d 0xffffffff, $r0
+ beq no_newjump
+ nop
+
+ jump [$r0]
+
+jumptarget:
+ .dword 0xffffffff ; can be overwritten later to insert new code
+
+no_newjump:
+#ifdef CONFIG_ETRAX_ETHERNET
+ ;; Start MII clock to make sure it is running when tranceiver is reset
+ move.d 0x3, $r0 ; enable = on, phy = mii_clk
+ move.d $r0, [R_NETWORK_GEN_CONFIG]
+#endif
+
+ ;; We need to setup the bus registers before we start using the DRAM
+#include "../../../arch-v10/lib/dram_init.S"
+
+ ;; we now should go through the checksum-table and check the listed
+ ;; partitions for errors.
+
+ move.d PTABLE_START, $r3
+ move.d [$r3], $r0
+ cmp.d NOP_DI, $r0 ; make sure the nop/di is there...
+ bne do_rescue
+ nop
+
+ ;; skip the code transparency block (10 bytes).
+
+ addq 10, $r3
+
+ ;; check for correct magic
+
+ move.w [$r3+], $r0
+ cmp.w PTABLE_MAGIC, $r0
+ bne do_rescue ; didn't recognize - trig rescue
+ nop
+
+ ;; check for correct ptable checksum
+
+ movu.w [$r3+], $r2 ; ptable length
+ move.d $r2, $r8 ; save for later, length of total ptable
+ addq 28, $r8 ; account for the rest
+ move.d [$r3+], $r4 ; ptable checksum
+ move.d $r3, $r1
+ jsr checksum ; r1 source, r2 length, returns in r0
+
+ cmp.d $r0, $r4
+ bne do_rescue ; didn't match - trig rescue
+ nop
+
+ ;; ptable is ok. validate each entry.
+
+ moveq -1, $r7
+
+ploop: move.d [$r3+], $r1 ; partition offset (from ptable start)
+ bne notfirst ; check if it is the partition containing ptable
+ nop ; yes..
+ move.d $r8, $r1 ; for its checksum check, skip the ptable
+ move.d [$r3+], $r2 ; partition length
+ sub.d $r8, $r2 ; minus the ptable length
+ ba bosse
+ nop
+notfirst:
+ cmp.d -1, $r1 ; the end of the ptable ?
+ beq flash_ok ; if so, the flash is validated
+ move.d [$r3+], $r2 ; partition length
+bosse: move.d [$r3+], $r5 ; checksum
+ move.d [$r3+], $r4 ; type and flags
+ addq 16, $r3 ; skip the reserved bytes
+ btstq 16, $r4 ; check ro flag
+ bpl ploop ; rw partition, skip validation
+ nop
+ btstq 17, $r4 ; check bootable flag
+ bpl 1f
+ nop
+ move.d $r1, $r7 ; remember boot partition offset
+1:
+ add.d PTABLE_START, $r1
+
+ jsr checksum ; checksum the partition
+
+ cmp.d $r0, $r5
+ beq ploop ; checksums matched, go to next entry
+ nop
+
+ ;; otherwise fall through to the rescue code.
+
+do_rescue:
+ ;; setup port PA and PB default initial directions and data
+ ;; (so we can flash LEDs, and so that DTR and others are set)
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
+ move.b $r0, [R_PORT_PA_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
+ move.b $r0, [R_PORT_PA_DATA]
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
+ move.b $r0, [R_PORT_PB_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
+ move.b $r0, [R_PORT_PB_DATA]
+
+ ;; setup the serial port at 115200 baud
+
+ moveq 0, $r0
+ move.d $r0, [SERXOFF]
+
+ move.b 0x99, $r0
+ move.b $r0, [SERBAUD] ; 115.2kbaud for both transmit and receive
+
+ move.b 0x40, $r0 ; rec enable
+ move.b $r0, [SERRECC]
+
+ moveq 0, $r1 ; "timer" to clock out a LED red flash
+ move.d CODE_START, $r3 ; destination counter
+ movu.w CODE_LENGTH, $r4; length
+
+wait_ser:
+ addq 1, $r1
+#ifndef CONFIG_ETRAX_NO_LEDS
+#ifdef CONFIG_ETRAX_PA_LEDS
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r2
+#endif
+#ifdef CONFIG_ETRAX_PB_LEDS
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r2
+#endif
+ move.d (1 << CONFIG_ETRAX_LED1R) | (1 << CONFIG_ETRAX_LED2R), $r0
+ btstq 16, $r1
+ bpl 1f
+ nop
+ or.d $r0, $r2 ; set bit
+ ba 2f
+ nop
+1: not $r0 ; clear bit
+ and.d $r0, $r2
+2:
+#ifdef CONFIG_ETRAX_PA_LEDS
+ move.b $r2, [R_PORT_PA_DATA]
+#endif
+#ifdef CONFIG_ETRAX_PB_LEDS
+ move.b $r2, [R_PORT_PB_DATA]
+#endif
+#ifdef CONFIG_ETRAX_90000000_LEDS
+ move.b $r2, [0x90000000]
+#endif
+#endif
+
+ ;; check if we got something on the serial port
+
+ move.b [SERSTAT], $r0
+ btstq 0, $r0 ; data_avail
+ bpl wait_ser
+ nop
+
+ ;; got something - copy the byte and loop
+
+ move.b [SERRDAT], $r0
+ move.b $r0, [$r3+]
+
+ subq 1, $r4 ; decrease length
+ bne wait_ser
+ nop
+
+ ;; jump into downloaded code
+
+ move.d RAM_INIT_MAGIC, $r8 ; Tell next product that DRAM is
+ ; initialized
+ jump CODE_START
+
+flash_ok:
+ ;; check r7, which contains either -1 or the partition to boot from
+
+ cmp.d -1, $r7
+ bne 1f
+ nop
+ move.d PTABLE_START, $r7; otherwise use the ptable start
+1:
+ move.d RAM_INIT_MAGIC, $r8 ; Tell next product that DRAM is
+ ; initialized
+ jump $r7 ; boot!
+
+
+ ;; Helper subroutines
+
+ ;; Will checksum by simple addition
+ ;; r1 - source
+ ;; r2 - length in bytes
+ ;; result will be in r0
+checksum:
+ moveq 0, $r0
+ moveq CONFIG_ETRAX_FLASH1_SIZE, $r6
+
+ ;; If the first physical flash memory is exceeded wrap to the
+ ;; second one
+ btstq 26, $r1 ; Are we addressing first flash?
+ bpl 1f
+ nop
+ clear.d $r6
+
+1: test.d $r6 ; 0 = no wrapping
+ beq 2f
+ nop
+ lslq 20, $r6 ; Convert MB to bytes
+ sub.d $r1, $r6
+
+2: addu.b [$r1+], $r0
+ subq 1, $r6 ; Flash memory left
+ beq 3f
+ subq 1, $r2 ; Length left
+ bne 2b
+ nop
+ ret
+ nop
+
+3: move.d MEM_CSE1_START, $r1 ; wrap to second flash
+ ba 2b
+ nop
+
+#endif
diff --git a/arch/cris/boot/rescue/head_v32.S b/arch/cris/boot/rescue/head_v32.S
new file mode 100644
index 0000000..5f846b7
--- /dev/null
+++ b/arch/cris/boot/rescue/head_v32.S
@@ -0,0 +1,26 @@
+/*
+ * Just get started by jumping to CONFIG_ETRAX_PTABLE_SECTOR to start
+ * kernel decompressor.
+ *
+ * In practice, this only works for NOR flash (or some convoluted RAM boot)
+ * and hence is not really useful for Artpec-3, so it's Etrax FS / NOR only.
+ *
+ */
+
+#include <mach/startup.inc>
+
+#ifdef CONFIG_ETRAX_AXISFLASHMAP
+
+;; Code
+
+ .text
+start:
+
+ ;; Start clocks for used blocks.
+ START_CLOCKS
+
+ move.d CONFIG_ETRAX_PTABLE_SECTOR, $r10
+ jump $r10 ; Jump to decompressor
+ nop
+
+#endif
diff --git a/arch/cris/boot/rescue/kimagerescue.S b/arch/cris/boot/rescue/kimagerescue.S
new file mode 100644
index 0000000..6f7b3e6
--- /dev/null
+++ b/arch/cris/boot/rescue/kimagerescue.S
@@ -0,0 +1,143 @@
+/*
+ * Rescue code to be prepended on a kimage and copied to the
+ * rescue serial port.
+ * This is called from the rescue code, it will copy received data to
+ * 4004000 and after a timeout jump to it.
+ */
+
+#define ASSEMBLER_MACROS_ONLY
+#include <arch/sv_addr_ag.h>
+
+#define CODE_START 0x40004000
+#define CODE_LENGTH 784
+#define TIMEOUT_VALUE 1000
+
+
+#ifdef CONFIG_ETRAX_RESCUE_SER0
+#define SERXOFF R_SERIAL0_XOFF
+#define SERBAUD R_SERIAL0_BAUD
+#define SERRECC R_SERIAL0_REC_CTRL
+#define SERRDAT R_SERIAL0_REC_DATA
+#define SERSTAT R_SERIAL0_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER1
+#define SERXOFF R_SERIAL1_XOFF
+#define SERBAUD R_SERIAL1_BAUD
+#define SERRECC R_SERIAL1_REC_CTRL
+#define SERRDAT R_SERIAL1_REC_DATA
+#define SERSTAT R_SERIAL1_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER2
+#define SERXOFF R_SERIAL2_XOFF
+#define SERBAUD R_SERIAL2_BAUD
+#define SERRECC R_SERIAL2_REC_CTRL
+#define SERRDAT R_SERIAL2_REC_DATA
+#define SERSTAT R_SERIAL2_STATUS
+#endif
+#ifdef CONFIG_ETRAX_RESCUE_SER3
+#define SERXOFF R_SERIAL3_XOFF
+#define SERBAUD R_SERIAL3_BAUD
+#define SERRECC R_SERIAL3_REC_CTRL
+#define SERRDAT R_SERIAL3_REC_DATA
+#define SERSTAT R_SERIAL3_STATUS
+#endif
+
+ .text
+ ;; This is the entry point of the rescue code
+ ;; 0x80000000 if loaded in flash (as it should be)
+ ;; since etrax actually starts at address 2 when booting from flash, we
+ ;; put a nop (2 bytes) here first so we dont accidentally skip the di
+
+ nop
+ di
+#ifndef CONFIG_SVINTO_SIM
+ ;; setup port PA and PB default initial directions and data
+ ;; (so we can flash LEDs, and so that DTR and others are set)
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DIR, $r0
+ move.b $r0, [R_PORT_PA_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r0
+ move.b $r0, [R_PORT_PA_DATA]
+
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DIR, $r0
+ move.b $r0, [R_PORT_PB_DIR]
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r0
+ move.b $r0, [R_PORT_PB_DATA]
+
+ ;; We need to setup the bus registers before we start using the DRAM
+#include "../../lib/dram_init.S"
+
+#endif
+ ;; Setup the stack to a suitably high address.
+ ;; We assume 8 MB is the minimum DRAM in an eLinux
+ ;; product and put the sp at the top for now.
+
+ move.d 0x40800000, $sp
+
+ ;; setup the serial port at 115200 baud
+
+ moveq 0, $r0
+ move.d $r0, [SERXOFF]
+
+ move.b 0x99, $r0
+ move.b $r0, [SERBAUD] ; 115.2kbaud for both transmit
+ ; and receive
+
+ move.b 0x40, $r0 ; rec enable
+ move.b $r0, [SERRECC]
+
+
+ moveq 0, $r1 ; "timer" to clock out a LED red flash
+ move.d CODE_START, $r3 ; destination counter
+ move.d CODE_LENGTH, $r4 ; length
+ move.d TIMEOUT_VALUE, $r5 ; "timeout" until jump
+
+wait_ser:
+ addq 1, $r1
+ subq 1, $r5 ; decrease timeout
+ beq jump_start ; timed out
+ nop
+#ifndef CONFIG_ETRAX_NO_LEDS
+#ifdef CONFIG_ETRAX_PA_LEDS
+ move.b CONFIG_ETRAX_DEF_R_PORT_PA_DATA, $r2
+#endif
+#ifdef CONFIG_ETRAX_PB_LEDS
+ move.b CONFIG_ETRAX_DEF_R_PORT_PB_DATA, $r2
+#endif
+ move.d (1 << CONFIG_ETRAX_LED1R) | (1 << CONFIG_ETRAX_LED2R), $r0
+ btstq 16, $r1
+ bpl 1f
+ nop
+ or.d $r0, $r2 ; set bit
+ ba 2f
+ nop
+1: not $r0 ; clear bit
+ and.d $r0, $r2
+2:
+#ifdef CONFIG_ETRAX_PA_LEDS
+ move.b $r2, [R_PORT_PA_DATA]
+#endif
+#ifdef CONFIG_ETRAX_PB_LEDS
+ move.b $r2, [R_PORT_PB_DATA]
+#endif
+#endif
+
+ ;; check if we got something on the serial port
+
+ move.b [SERSTAT], $r0
+ btstq 0, $r0 ; data_avail
+ bpl wait_ser
+ nop
+
+ ;; got something - copy the byte and loop
+
+ move.b [SERRDAT], $r0
+ move.b $r0, [$r3+]
+ move.d TIMEOUT_VALUE, $r5 ; reset "timeout"
+ subq 1, $r4 ; decrease length
+ bne wait_ser
+ nop
+jump_start:
+ ;; jump into downloaded code
+
+ jump CODE_START
diff --git a/arch/cris/boot/rescue/rescue_v10.lds b/arch/cris/boot/rescue/rescue_v10.lds
new file mode 100644
index 0000000..0b52a94
--- /dev/null
+++ b/arch/cris/boot/rescue/rescue_v10.lds
@@ -0,0 +1,20 @@
+MEMORY
+ {
+ flash : ORIGIN = 0x00000000,
+ LENGTH = 0x00100000
+ }
+
+SECTIONS
+{
+ .text :
+ {
+ stext = . ;
+ *(.text)
+ etext = . ;
+ } > flash
+ .data :
+ {
+ *(.data)
+ edata = . ;
+ } > flash
+}
diff --git a/arch/cris/boot/rescue/rescue_v32.lds b/arch/cris/boot/rescue/rescue_v32.lds
new file mode 100644
index 0000000..8ac646b
--- /dev/null
+++ b/arch/cris/boot/rescue/rescue_v32.lds
@@ -0,0 +1,43 @@
+/*#OUTPUT_FORMAT(elf32-us-cris) */
+OUTPUT_ARCH (crisv32)
+/* Now that NAND support has been stripped, this file could be simplified,
+ * but it doesn't do any harm on the other hand so why bother. */
+
+MEMORY
+ {
+ bootblk : ORIGIN = 0x38000000,
+ LENGTH = 0x00004000
+ intmem : ORIGIN = 0x38004000,
+ LENGTH = 0x00005000
+ }
+
+SECTIONS
+{
+ .text :
+ {
+ _stext = . ;
+ *(.text)
+ *(.init.text)
+ *(.rodata)
+ *(.rodata.*)
+ _etext = . ;
+ } > bootblk
+ .data :
+ {
+ *(.data)
+ _edata = . ;
+ } > bootblk
+ .bss :
+ {
+ _bss = . ;
+ *(.bss)
+ _end = ALIGN( 0x10 ) ;
+ } > intmem
+
+ /* Get rid of stuff from EXPORT_SYMBOL(foo). */
+ /DISCARD/ :
+ {
+ *(__ksymtab_strings)
+ *(__ksymtab)
+ }
+}
diff --git a/arch/cris/boot/rescue/testrescue.S b/arch/cris/boot/rescue/testrescue.S
new file mode 100644
index 0000000..fc7ec67
--- /dev/null
+++ b/arch/cris/boot/rescue/testrescue.S
@@ -0,0 +1,24 @@
+/*
+ * Simple testcode to download by the rescue block.
+ * Just lights some LEDs to show it was downloaded correctly.
+ *
+ * Copyright (C) 1999 Axis Communications AB
+ */
+
+#define ASSEMBLER_MACROS_ONLY
+#include <arch/sv_addr_ag.h>
+
+ .text
+
+ nop
+ nop
+ moveq -1, $r2
+ move.b $r2, [R_PORT_PA_DIR]
+ moveq 0, $r2
+ move.b $r2, [R_PORT_PA_DATA]
+
+endless:
+ nop
+ ba endless
+ nop
+
diff --git a/arch/cris/boot/tools/build.c b/arch/cris/boot/tools/build.c
new file mode 100644
index 0000000..c8adef3
--- /dev/null
+++ b/arch/cris/boot/tools/build.c
@@ -0,0 +1,287 @@
+/*
+ * linux/tools/build.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ */
+
+/*
+ * This file builds a disk-image from three different files:
+ *
+ * - bootsect: exactly 512 bytes of 8086 machine code, loads the rest
+ * - setup: 8086 machine code, sets up system parm
+ * - system: 80386 code for actual system
+ *
+ * It does some checking that all files are of the correct type, and
+ * just writes the result to stdout, removing headers and padding to
+ * the right amount. It also writes some system data to stderr.
+ */
+
+/*
+ * Changes by tytso to allow root device specification
+ * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
+ * Cross compiling fixes by Gertjan van Wingerde, July 1996
+ */
+
+#include <stdio.h> /* fprintf */
+#include <string.h>
+#include <stdlib.h> /* contains exit */
+#include <sys/types.h> /* unistd.h needs this */
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+#include <unistd.h> /* contains read/write */
+#include <fcntl.h>
+#include <errno.h>
+
+#define MINIX_HEADER 32
+
+#define N_MAGIC_OFFSET 1024
+#ifndef __BFD__
+static int GCC_HEADER = sizeof(struct exec);
+#endif
+
+#ifdef __BIG_KERNEL__
+#define SYS_SIZE 0xffff
+#else
+#define SYS_SIZE DEF_SYSSIZE
+#endif
+
+#define DEFAULT_MAJOR_ROOT 0
+#define DEFAULT_MINOR_ROOT 0
+
+/* max nr of sectors of setup: don't change unless you also change
+ * bootsect etc */
+#define SETUP_SECTS 4
+
+#define STRINGIFY(x) #x
+
+typedef union {
+ int i;
+ long l;
+ short s[2];
+ char b[4];
+} conv;
+
+long intel_long(long l)
+{
+ conv t;
+
+ t.b[0] = l & 0xff; l >>= 8;
+ t.b[1] = l & 0xff; l >>= 8;
+ t.b[2] = l & 0xff; l >>= 8;
+ t.b[3] = l & 0xff; l >>= 8;
+ return t.l;
+}
+
+int intel_int(int i)
+{
+ conv t;
+
+ t.b[0] = i & 0xff; i >>= 8;
+ t.b[1] = i & 0xff; i >>= 8;
+ t.b[2] = i & 0xff; i >>= 8;
+ t.b[3] = i & 0xff; i >>= 8;
+ return t.i;
+}
+
+short intel_short(short l)
+{
+ conv t;
+
+ t.b[0] = l & 0xff; l >>= 8;
+ t.b[1] = l & 0xff; l >>= 8;
+ return t.s[0];
+}
+
+void die(const char * str)
+{
+ fprintf(stderr,"%s\n",str);
+ exit(1);
+}
+
+void usage(void)
+{
+ die("Usage: build bootsect setup system [rootdev] [> image]");
+}
+
+int main(int argc, char ** argv)
+{
+ int i,c,id,sz,tmp_int;
+ unsigned long sys_size, tmp_long;
+ char buf[1024];
+#ifndef __BFD__
+ struct exec *ex = (struct exec *)buf;
+#endif
+ char major_root, minor_root;
+ struct stat sb;
+ unsigned char setup_sectors;
+
+ if ((argc < 4) || (argc > 5))
+ usage();
+ if (argc > 4) {
+ if (!strcmp(argv[4], "CURRENT")) {
+ if (stat("/", &sb)) {
+ perror("/");
+ die("Couldn't stat /");
+ }
+ major_root = major(sb.st_dev);
+ minor_root = minor(sb.st_dev);
+ } else if (strcmp(argv[4], "FLOPPY")) {
+ if (stat(argv[4], &sb)) {
+ perror(argv[4]);
+ die("Couldn't stat root device.");
+ }
+ major_root = major(sb.st_rdev);
+ minor_root = minor(sb.st_rdev);
+ } else {
+ major_root = 0;
+ minor_root = 0;
+ }
+ } else {
+ major_root = DEFAULT_MAJOR_ROOT;
+ minor_root = DEFAULT_MINOR_ROOT;
+ }
+ fprintf(stderr, "Root device is (%d, %d)\n", major_root, minor_root);
+ for (i=0;i<sizeof buf; i++) buf[i]=0;
+ if ((id=open(argv[1],O_RDONLY,0))<0)
+ die("Unable to open 'boot'");
+ if (read(id,buf,MINIX_HEADER) != MINIX_HEADER)
+ die("Unable to read header of 'boot'");
+ if (((long *) buf)[0]!=intel_long(0x04100301))
+ die("Non-Minix header of 'boot'");
+ if (((long *) buf)[1]!=intel_long(MINIX_HEADER))
+ die("Non-Minix header of 'boot'");
+ if (((long *) buf)[3] != 0)
+ die("Illegal data segment in 'boot'");
+ if (((long *) buf)[4] != 0)
+ die("Illegal bss in 'boot'");
+ if (((long *) buf)[5] != 0)
+ die("Non-Minix header of 'boot'");
+ if (((long *) buf)[7] != 0)
+ die("Illegal symbol table in 'boot'");
+ i=read(id,buf,sizeof buf);
+ fprintf(stderr,"Boot sector %d bytes.\n",i);
+ if (i != 512)
+ die("Boot block must be exactly 512 bytes");
+ if ((*(unsigned short *)(buf+510)) != (unsigned short)intel_short(0xAA55))
+ die("Boot block hasn't got boot flag (0xAA55)");
+ buf[508] = (char) minor_root;
+ buf[509] = (char) major_root;
+ i=write(1,buf,512);
+ if (i!=512)
+ die("Write call failed");
+ close (id);
+
+ if ((id=open(argv[2],O_RDONLY,0))<0)
+ die("Unable to open 'setup'");
+ if (read(id,buf,MINIX_HEADER) != MINIX_HEADER)
+ die("Unable to read header of 'setup'");
+ if (((long *) buf)[0]!=intel_long(0x04100301))
+ die("Non-Minix header of 'setup'");
+ if (((long *) buf)[1]!=intel_long(MINIX_HEADER))
+ die("Non-Minix header of 'setup'");
+ if (((long *) buf)[3] != 0)
+ die("Illegal data segment in 'setup'");
+ if (((long *) buf)[4] != 0)
+ die("Illegal bss in 'setup'");
+ if (((long *) buf)[5] != 0)
+ die("Non-Minix header of 'setup'");
+ if (((long *) buf)[7] != 0)
+ die("Illegal symbol table in 'setup'");
+ for (i=0 ; (c=read(id,buf,sizeof buf))>0 ; i+=c )
+#ifdef __BIG_KERNEL__
+ {
+ if (!i) {
+ /* Working with memcpy because of alignment constraints
+ on Sparc - Gertjan */
+ memcpy(&tmp_long, &buf[2], sizeof(long));
+ if (tmp_long != intel_long(0x53726448) )
+ die("Wrong magic in loader header of 'setup'");
+ memcpy(&tmp_int, &buf[6], sizeof(int));
+ if (tmp_int < intel_int(0x200))
+ die("Wrong version of loader header of 'setup'");
+ buf[0x11] = 1; /* LOADED_HIGH */
+ tmp_long = intel_long(0x100000);
+ memcpy(&buf[0x14], &tmp_long, sizeof(long)); /* code32_start */
+ }
+#endif
+ if (write(1,buf,c)!=c)
+ die("Write call failed");
+#ifdef __BIG_KERNEL__
+ }
+#endif
+ if (c != 0)
+ die("read-error on 'setup'");
+ close (id);
+ setup_sectors = (unsigned char)((i + 511) / 512);
+ /* for compatibility with LILO */
+ if (setup_sectors < SETUP_SECTS)
+ setup_sectors = SETUP_SECTS;
+ fprintf(stderr,"Setup is %d bytes.\n",i);
+ for (c=0 ; c<sizeof(buf) ; c++)
+ buf[c] = '\0';
+ while (i < setup_sectors * 512) {
+ c = setup_sectors * 512 - i;
+ if (c > sizeof(buf))
+ c = sizeof(buf);
+ if (write(1,buf,c) != c)
+ die("Write call failed");
+ i += c;
+ }
+
+ if ((id=open(argv[3],O_RDONLY,0))<0)
+ die("Unable to open 'system'");
+#ifndef __BFD__
+ if (read(id,buf,GCC_HEADER) != GCC_HEADER)
+ die("Unable to read header of 'system'");
+ if (N_MAGIC(*ex) == ZMAGIC) {
+ GCC_HEADER = N_MAGIC_OFFSET;
+ lseek(id, GCC_HEADER, SEEK_SET);
+ } else if (N_MAGIC(*ex) != QMAGIC)
+ die("Non-GCC header of 'system'");
+ fprintf(stderr,"System is %d kB (%d kB code, %d kB data and %d kB bss)\n",
+ (ex->a_text+ex->a_data+ex->a_bss)/1024,
+ ex->a_text /1024,
+ ex->a_data /1024,
+ ex->a_bss /1024);
+ sz = N_SYMOFF(*ex) - GCC_HEADER + 4;
+#else
+ if (fstat (id, &sb)) {
+ perror ("fstat");
+ die ("Unable to stat 'system'");
+ }
+ sz = sb.st_size;
+ fprintf (stderr, "System is %d kB\n", sz/1024);
+#endif
+ sys_size = (sz + 15) / 16;
+ if (sys_size > SYS_SIZE)
+ die("System is too big");
+ while (sz > 0) {
+ int l, n;
+
+ l = sz;
+ if (l > sizeof(buf))
+ l = sizeof(buf);
+ if ((n=read(id, buf, l)) != l) {
+ if (n == -1)
+ perror(argv[1]);
+ else
+ fprintf(stderr, "Unexpected EOF\n");
+ die("Can't read 'system'");
+ }
+ if (write(1, buf, l) != l)
+ die("Write failed");
+ sz -= l;
+ }
+ close(id);
+ if (lseek(1, 497, 0) == 497) {
+ if (write(1, &setup_sectors, 1) != 1)
+ die("Write of setup sectors failed");
+ }
+ if (lseek(1,500,0) == 500) {
+ buf[0] = (sys_size & 0xff);
+ buf[1] = ((sys_size >> 8) & 0xff);
+ if (write(1, buf, 2) != 2)
+ die("Write failed");
+ }
+ return(0);
+}
generated by cgit v1.1 at 2024-12-27 05:37:20 +0000