[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 000000000000..1f528f92690d
--- /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 */