[PATCH] avr32 architecture

This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.

AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density.  The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.

The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf

The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture.  It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit.  It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.

Full data sheet is available from

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

Information about the AT32STK1000 development board can be found at

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918

including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.

Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.

This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.

[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 387 insertions, 0 deletions

diff --git a/include/asm-avr32/unistd.h b/include/asm-avr32/unistd.h
new file mode 100644
index 0000000..1f528f9
--- /dev/null
+++ b/include/asm-avr32/unistd.h
@@ -0,0 +1,387 @@
+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ *
+ * 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.
+ */
+#ifndef __ASM_AVR32_UNISTD_H
+#define __ASM_AVR32_UNISTD_H
+
+/*
+ * This file contains the system call numbers.
+ */
+
+#define __NR_restart_syscall      0
+#define __NR_exit		  1
+#define __NR_fork		  2
+#define __NR_read		  3
+#define __NR_write		  4
+#define __NR_open		  5
+#define __NR_close		  6
+#define __NR_umask		  7
+#define __NR_creat		  8
+#define __NR_link		  9
+#define __NR_unlink		 10
+#define __NR_execve		 11
+#define __NR_chdir		 12
+#define __NR_time		 13
+#define __NR_mknod		 14
+#define __NR_chmod		 15
+#define __NR_chown		 16
+#define __NR_lchown		 17
+#define __NR_lseek		 18
+#define __NR__llseek		 19
+#define __NR_getpid		 20
+#define __NR_mount		 21
+#define __NR_umount2		 22
+#define __NR_setuid		 23
+#define __NR_getuid		 24
+#define __NR_stime		 25
+#define __NR_ptrace		 26
+#define __NR_alarm		 27
+#define __NR_pause		 28
+#define __NR_utime		 29
+#define __NR_stat		 30
+#define __NR_fstat		 31
+#define __NR_lstat		 32
+#define __NR_access		 33
+#define __NR_chroot		 34
+#define __NR_sync		 35
+#define __NR_fsync		 36
+#define __NR_kill		 37
+#define __NR_rename		 38
+#define __NR_mkdir		 39
+#define __NR_rmdir		 40
+#define __NR_dup		 41
+#define __NR_pipe		 42
+#define __NR_times		 43
+#define __NR_clone		 44
+#define __NR_brk		 45
+#define __NR_setgid		 46
+#define __NR_getgid		 47
+#define __NR_getcwd		 48
+#define __NR_geteuid		 49
+#define __NR_getegid		 50
+#define __NR_acct		 51
+#define __NR_setfsuid		 52
+#define __NR_setfsgid		 53
+#define __NR_ioctl		 54
+#define __NR_fcntl		 55
+#define __NR_setpgid		 56
+#define __NR_mremap		 57
+#define __NR_setresuid		 58
+#define __NR_getresuid		 59
+#define __NR_setreuid		 60
+#define __NR_setregid		 61
+#define __NR_ustat		 62
+#define __NR_dup2		 63
+#define __NR_getppid		 64
+#define __NR_getpgrp		 65
+#define __NR_setsid		 66
+#define __NR_rt_sigaction	 67
+#define __NR_rt_sigreturn	 68
+#define __NR_rt_sigprocmask	 69
+#define __NR_rt_sigpending	 70
+#define __NR_rt_sigtimedwait	 71
+#define __NR_rt_sigqueueinfo	 72
+#define __NR_rt_sigsuspend	 73
+#define __NR_sethostname	 74
+#define __NR_setrlimit		 75
+#define __NR_getrlimit		 76	/* SuS compliant getrlimit */
+#define __NR_getrusage		 77
+#define __NR_gettimeofday	 78
+#define __NR_settimeofday	 79
+#define __NR_getgroups		 80
+#define __NR_setgroups		 81
+#define __NR_select		 82
+#define __NR_symlink		 83
+#define __NR_fchdir		 84
+#define __NR_readlink		 85
+#define __NR_pread		 86
+#define __NR_pwrite		 87
+#define __NR_swapon		 88
+#define __NR_reboot		 89
+#define __NR_mmap2		 90
+#define __NR_munmap		 91
+#define __NR_truncate		 92
+#define __NR_ftruncate		 93
+#define __NR_fchmod		 94
+#define __NR_fchown		 95
+#define __NR_getpriority	 96
+#define __NR_setpriority	 97
+#define __NR_wait4		 98
+#define __NR_statfs		 99
+#define __NR_fstatfs		100
+#define __NR_vhangup		101
+#define __NR_sigaltstack	102
+#define __NR_syslog		103
+#define __NR_setitimer		104
+#define __NR_getitimer		105
+#define __NR_swapoff		106
+#define __NR_sysinfo		107
+#define __NR_ipc		108
+#define __NR_sendfile		109
+#define __NR_setdomainname	110
+#define __NR_uname		111
+#define __NR_adjtimex		112
+#define __NR_mprotect		113
+#define __NR_vfork		114
+#define __NR_init_module	115
+#define __NR_delete_module	116
+#define __NR_quotactl		117
+#define __NR_getpgid		118
+#define __NR_bdflush		119
+#define __NR_sysfs		120
+#define __NR_personality	121
+#define __NR_afs_syscall	122 /* Syscall for Andrew File System */
+#define __NR_getdents		123
+#define __NR_flock		124
+#define __NR_msync		125
+#define __NR_readv		126
+#define __NR_writev		127
+#define __NR_getsid		128
+#define __NR_fdatasync		129
+#define __NR__sysctl		130
+#define __NR_mlock		131
+#define __NR_munlock		132
+#define __NR_mlockall		133
+#define __NR_munlockall		134
+#define __NR_sched_setparam		135
+#define __NR_sched_getparam		136
+#define __NR_sched_setscheduler		137
+#define __NR_sched_getscheduler		138
+#define __NR_sched_yield		139
+#define __NR_sched_get_priority_max	140
+#define __NR_sched_get_priority_min	141
+#define __NR_sched_rr_get_interval	142
+#define __NR_nanosleep		143
+#define __NR_poll		144
+#define __NR_nfsservctl		145
+#define __NR_setresgid		146
+#define __NR_getresgid		147
+#define __NR_prctl              148
+#define __NR_socket		149
+#define __NR_bind		150
+#define __NR_connect		151
+#define __NR_listen		152
+#define __NR_accept		153
+#define __NR_getsockname	154
+#define __NR_getpeername	155
+#define __NR_socketpair		156
+#define __NR_send		157
+#define __NR_recv		158
+#define __NR_sendto		159
+#define __NR_recvfrom		160
+#define __NR_shutdown		161
+#define __NR_setsockopt		162
+#define __NR_getsockopt		163
+#define __NR_sendmsg		164
+#define __NR_recvmsg		165
+#define __NR_truncate64		166
+#define __NR_ftruncate64	167
+#define __NR_stat64		168
+#define __NR_lstat64		169
+#define __NR_fstat64		170
+#define __NR_pivot_root		171
+#define __NR_mincore		172
+#define __NR_madvise		173
+#define __NR_getdents64		174
+#define __NR_fcntl64		175
+#define __NR_gettid		176
+#define __NR_readahead		177
+#define __NR_setxattr		178
+#define __NR_lsetxattr		179
+#define __NR_fsetxattr		180
+#define __NR_getxattr		181
+#define __NR_lgetxattr		182
+#define __NR_fgetxattr		183
+#define __NR_listxattr		184
+#define __NR_llistxattr		185
+#define __NR_flistxattr		186
+#define __NR_removexattr	187
+#define __NR_lremovexattr	188
+#define __NR_fremovexattr	189
+#define __NR_tkill		190
+#define __NR_sendfile64		191
+#define __NR_futex		192
+#define __NR_sched_setaffinity	193
+#define __NR_sched_getaffinity	194
+#define __NR_capget		195
+#define __NR_capset		196
+#define __NR_io_setup		197
+#define __NR_io_destroy		198
+#define __NR_io_getevents	199
+#define __NR_io_submit		200
+#define __NR_io_cancel		201
+#define __NR_fadvise64		202
+#define __NR_exit_group		203
+#define __NR_lookup_dcookie	204
+#define __NR_epoll_create	205
+#define __NR_epoll_ctl		206
+#define __NR_epoll_wait		207
+#define __NR_remap_file_pages	208
+#define __NR_set_tid_address	209
+
+#define __NR_timer_create	210
+#define __NR_timer_settime	211
+#define __NR_timer_gettime	212
+#define __NR_timer_getoverrun	213
+#define __NR_timer_delete	214
+#define __NR_clock_settime	215
+#define __NR_clock_gettime	216
+#define __NR_clock_getres	217
+#define __NR_clock_nanosleep	218
+#define __NR_statfs64		219
+#define __NR_fstatfs64		220
+#define __NR_tgkill		221
+				/* 222 reserved for tux */
+#define __NR_utimes		223
+#define __NR_fadvise64_64	224
+
+#define __NR_cacheflush		225
+
+#define __NR_vserver		226
+#define __NR_mq_open		227
+#define __NR_mq_unlink		228
+#define __NR_mq_timedsend	229
+#define __NR_mq_timedreceive	230
+#define __NR_mq_notify		231
+#define __NR_mq_getsetattr	232
+#define __NR_kexec_load		233
+#define __NR_waitid		234
+#define __NR_add_key		235
+#define __NR_request_key	236
+#define __NR_keyctl		237
+#define __NR_ioprio_set		238
+#define __NR_ioprio_get		239
+#define __NR_inotify_init	240
+#define __NR_inotify_add_watch	241
+#define __NR_inotify_rm_watch	242
+#define __NR_openat		243
+#define __NR_mkdirat		244
+#define __NR_mknodat		245
+#define __NR_fchownat		246
+#define __NR_futimesat		247
+#define __NR_fstatat64		248
+#define __NR_unlinkat		249
+#define __NR_renameat		250
+#define __NR_linkat		251
+#define __NR_symlinkat		252
+#define __NR_readlinkat		253
+#define __NR_fchmodat		254
+#define __NR_faccessat		255
+#define __NR_pselect6		256
+#define __NR_ppoll		257
+#define __NR_unshare		258
+#define __NR_set_robust_list	259
+#define __NR_get_robust_list	260
+#define __NR_splice		261
+#define __NR_sync_file_range	262
+#define __NR_tee		263
+#define __NR_vmsplice		264
+
+#define NR_syscalls		265
+
+
+/*
+ * AVR32 calling convention for system calls:
+ *   - System call number in r8
+ *   - Parameters in r12 and downwards to r9 as well as r6 and r5.
+ *   - Return value in r12
+ */
+
+/*
+ * user-visible error numbers are in the range -1 - -124: see
+ * <asm-generic/errno.h>
+ */
+
+#define __syscall_return(type, res) do {				\
+		if ((unsigned long)(res) >= (unsigned long)(-125)) {	\
+			errno = -(res);					\
+			res = -1;					\
+		}							\
+		return (type) (res);					\
+	} while (0)
+
+#ifdef __KERNEL__
+#define __ARCH_WANT_IPC_PARSE_VERSION
+#define __ARCH_WANT_STAT64
+#define __ARCH_WANT_SYS_ALARM
+#define __ARCH_WANT_SYS_GETHOSTNAME
+#define __ARCH_WANT_SYS_PAUSE
+#define __ARCH_WANT_SYS_TIME
+#define __ARCH_WANT_SYS_UTIME
+#define __ARCH_WANT_SYS_WAITPID
+#define __ARCH_WANT_SYS_FADVISE64
+#define __ARCH_WANT_SYS_GETPGRP
+#define __ARCH_WANT_SYS_LLSEEK
+#define __ARCH_WANT_SYS_GETPGRP
+#define __ARCH_WANT_SYS_RT_SIGACTION
+#define __ARCH_WANT_SYS_RT_SIGSUSPEND
+#endif
+
+#if defined(__KERNEL_SYSCALLS__) || defined(__CHECKER__)
+
+#include <linux/types.h>
+#include <linux/linkage.h>
+#include <asm/signal.h>
+
+struct pt_regs;
+
+/*
+ * we need this inline - forking from kernel space will result
+ * in NO COPY ON WRITE (!!!), until an execve is executed. This
+ * is no problem, but for the stack. This is handled by not letting
+ * main() use the stack at all after fork(). Thus, no function
+ * calls - which means inline code for fork too, as otherwise we
+ * would use the stack upon exit from 'fork()'.
+ *
+ * Actually only pause and fork are needed inline, so that there
+ * won't be any messing with the stack from main(), but we define
+ * some others too.
+ */
+static inline int execve(const char *file, char **argv, char **envp)
+{
+	register long scno asm("r8") = __NR_execve;
+	register long sc1 asm("r12") = (long)file;
+	register long sc2 asm("r11") = (long)argv;
+	register long sc3 asm("r10") = (long)envp;
+	int res;
+
+	asm volatile("scall"
+		     : "=r"(sc1)
+		     : "r"(scno), "0"(sc1), "r"(sc2), "r"(sc3)
+		     : "lr", "memory");
+	res = sc1;
+	__syscall_return(int, res);
+}
+
+asmlinkage long sys_rt_sigsuspend(sigset_t __user *unewset, size_t sigsetsize);
+asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss,
+			       struct pt_regs *regs);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
+asmlinkage int sys_pipe(unsigned long __user *filedes);
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+			  unsigned long prot, unsigned long flags,
+			  unsigned long fd, off_t offset);
+asmlinkage int sys_cacheflush(int operation, void __user *addr, size_t len);
+asmlinkage int sys_fork(struct pt_regs *regs);
+asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
+			 unsigned long parent_tidptr,
+			 unsigned long child_tidptr, struct pt_regs *regs);
+asmlinkage int sys_vfork(struct pt_regs *regs);
+asmlinkage int sys_execve(char __user *ufilename, char __user *__user *uargv,
+			  char __user *__user *uenvp, struct pt_regs *regs);
+
+#endif
+
+/*
+ * "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");
+
+#endif /* __ASM_AVR32_UNISTD_H */