diff options
Diffstat (limited to 'arch/arm26/kernel')
| -rw-r--r-- | arch/arm26/kernel/Makefile | 17 | ||||
| -rw-r--r-- | arch/arm26/kernel/armksyms.c | 204 | ||||
| -rw-r--r-- | arch/arm26/kernel/asm-offsets.c | 55 | ||||
| -rw-r--r-- | arch/arm26/kernel/calls.S | 265 | ||||
| -rw-r--r-- | arch/arm26/kernel/compat.c | 173 | ||||
| -rw-r--r-- | arch/arm26/kernel/dma.c | 273 | ||||
| -rw-r--r-- | arch/arm26/kernel/ecard.c | 847 | ||||
| -rw-r--r-- | arch/arm26/kernel/entry.S | 951 | ||||
| -rw-r--r-- | arch/arm26/kernel/fiq.c | 201 | ||||
| -rw-r--r-- | arch/arm26/kernel/head.S | 112 | ||||
| -rw-r--r-- | arch/arm26/kernel/init_task.c | 49 | ||||
| -rw-r--r-- | arch/arm26/kernel/irq.c | 722 | ||||
| -rw-r--r-- | arch/arm26/kernel/process.c | 392 | ||||
| -rw-r--r-- | arch/arm26/kernel/ptrace.c | 670 | ||||
| -rw-r--r-- | arch/arm26/kernel/ptrace.h | 13 | ||||
| -rw-r--r-- | arch/arm26/kernel/semaphore.c | 222 | ||||
| -rw-r--r-- | arch/arm26/kernel/setup.c | 572 | ||||
| -rw-r--r-- | arch/arm26/kernel/signal.c | 538 | ||||
| -rw-r--r-- | arch/arm26/kernel/sys_arm.c | 323 | ||||
| -rw-r--r-- | arch/arm26/kernel/time.c | 210 | ||||
| -rw-r--r-- | arch/arm26/kernel/traps.c | 548 | ||||
| -rw-r--r-- | arch/arm26/kernel/vmlinux-arm26-xip.lds.in | 136 | ||||
| -rw-r--r-- | arch/arm26/kernel/vmlinux-arm26.lds.in | 129 | ||||
| -rw-r--r-- | arch/arm26/kernel/vmlinux.lds.S | 11 |
24 files changed, 0 insertions, 7633 deletions
diff --git a/arch/arm26/kernel/Makefile b/arch/arm26/kernel/Makefile deleted file mode 100644 index ee9fb49fdb7..00000000000 --- a/arch/arm26/kernel/Makefile +++ /dev/null @@ -1,17 +0,0 @@ -# -# Makefile for the linux kernel. -# - -# Object file lists. - -AFLAGS_head.o := -DTEXTADDR=$(TEXTADDR) - -obj-y := compat.o dma.o entry.o irq.o process.o ptrace.o \ - semaphore.o setup.o signal.o sys_arm.o time.o traps.o \ - ecard.o dma.o ecard.o fiq.o time.o - -extra-y := head.o init_task.o vmlinux.lds - -obj-$(CONFIG_FIQ) += fiq.o -obj-$(CONFIG_MODULES) += armksyms.o - diff --git a/arch/arm26/kernel/armksyms.c b/arch/arm26/kernel/armksyms.c deleted file mode 100644 index fe1e3ceed7c..00000000000 --- a/arch/arm26/kernel/armksyms.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * linux/arch/arm26/kernel/armksyms.c - * - * Copyright (C) 2003 Ian Molton - * - * 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. - */ -#include <linux/module.h> -#include <linux/module.h> -#include <linux/user.h> -#include <linux/string.h> -#include <linux/fs.h> -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/delay.h> -#include <linux/in6.h> -#include <linux/interrupt.h> -#include <linux/pm.h> -#include <linux/tty.h> -#include <linux/vt_kern.h> -#include <linux/syscalls.h> - -#include <asm/byteorder.h> -#include <asm/elf.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/processor.h> -#include <asm/semaphore.h> -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/checksum.h> -#include <asm/mach-types.h> - -extern int dump_fpu(struct pt_regs *, struct user_fp_struct *); -extern void inswb(unsigned int port, void *to, int len); -extern void outswb(unsigned int port, const void *to, int len); - -extern void __bad_xchg(volatile void *ptr, int size); - -/* - * libgcc functions - functions that are used internally by the - * compiler... (prototypes are not correct though, but that - * doesn't really matter since they're not versioned). - */ -extern void __ashldi3(void); -extern void __ashrdi3(void); -extern void __divsi3(void); -extern void __lshrdi3(void); -extern void __modsi3(void); -extern void __muldi3(void); -extern void __ucmpdi2(void); -extern void __udivdi3(void); -extern void __umoddi3(void); -extern void __udivmoddi4(void); -extern void __udivsi3(void); -extern void __umodsi3(void); -extern void abort(void); - -extern void ret_from_exception(void); -extern void fpundefinstr(void); -extern void fp_enter(void); - -/* - * This has a special calling convention; it doesn't - * modify any of the usual registers, except for LR. - * FIXME - we used to use our own local version - looks to be in kernel/softirq now - */ -//extern void __do_softirq(void); - -#define EXPORT_SYMBOL_ALIAS(sym,orig) \ - const char __kstrtab_##sym[] \ - __attribute__((section(".kstrtab"))) = \ - __MODULE_STRING(sym); \ - const struct module_symbol __ksymtab_##sym \ - __attribute__((section("__ksymtab"))) = \ - { (unsigned long)&orig, __kstrtab_##sym }; - -/* - * floating point math emulator support. - * These symbols will never change their calling convention... - */ -EXPORT_SYMBOL_ALIAS(kern_fp_enter,fp_enter); -EXPORT_SYMBOL_ALIAS(fp_printk,printk); -EXPORT_SYMBOL_ALIAS(fp_send_sig,send_sig); - -EXPORT_SYMBOL(fpundefinstr); -EXPORT_SYMBOL(ret_from_exception); - -#ifdef CONFIG_VT -EXPORT_SYMBOL(kd_mksound); -#endif - -//EXPORT_SYMBOL(__do_softirq); - - /* platform dependent support */ -EXPORT_SYMBOL(dump_thread); -EXPORT_SYMBOL(dump_fpu); -EXPORT_SYMBOL(udelay); -EXPORT_SYMBOL(kernel_thread); -EXPORT_SYMBOL(system_rev); -EXPORT_SYMBOL(system_serial_low); -EXPORT_SYMBOL(system_serial_high); -#ifdef CONFIG_DEBUG_BUGVERBOSE -EXPORT_SYMBOL(__bug); -#endif -EXPORT_SYMBOL(__bad_xchg); -EXPORT_SYMBOL(__readwrite_bug); -EXPORT_SYMBOL(set_irq_type); -EXPORT_SYMBOL(pm_idle); -EXPORT_SYMBOL(pm_power_off); - - /* processor dependencies */ -EXPORT_SYMBOL(__machine_arch_type); - - /* networking */ -EXPORT_SYMBOL(csum_partial_copy_nocheck); -EXPORT_SYMBOL(__csum_ipv6_magic); - - /* io */ -#ifndef __raw_readsb -EXPORT_SYMBOL(__raw_readsb); -#endif -#ifndef __raw_readsw -EXPORT_SYMBOL(__raw_readsw); -#endif -#ifndef __raw_readsl -EXPORT_SYMBOL(__raw_readsl); -#endif -#ifndef __raw_writesb -EXPORT_SYMBOL(__raw_writesb); -#endif -#ifndef __raw_writesw -EXPORT_SYMBOL(__raw_writesw); -#endif -#ifndef __raw_writesl -EXPORT_SYMBOL(__raw_writesl); -#endif - - /* string / mem functions */ -EXPORT_SYMBOL(strcpy); -EXPORT_SYMBOL(strncpy); -EXPORT_SYMBOL(strcat); -EXPORT_SYMBOL(strncat); -EXPORT_SYMBOL(strcmp); -EXPORT_SYMBOL(strncmp); -EXPORT_SYMBOL(strchr); -EXPORT_SYMBOL(strlen); -EXPORT_SYMBOL(strnlen); -EXPORT_SYMBOL(strrchr); -EXPORT_SYMBOL(strstr); -EXPORT_SYMBOL(memset); -EXPORT_SYMBOL(memcpy); -EXPORT_SYMBOL(memmove); -EXPORT_SYMBOL(memcmp); -EXPORT_SYMBOL(memscan); -EXPORT_SYMBOL(__memzero); - - /* user mem (segment) */ -EXPORT_SYMBOL(uaccess_kernel); -EXPORT_SYMBOL(uaccess_user); - -EXPORT_SYMBOL(__get_user_1); -EXPORT_SYMBOL(__get_user_2); -EXPORT_SYMBOL(__get_user_4); -EXPORT_SYMBOL(__get_user_8); - -EXPORT_SYMBOL(__put_user_1); -EXPORT_SYMBOL(__put_user_2); -EXPORT_SYMBOL(__put_user_4); -EXPORT_SYMBOL(__put_user_8); - - /* gcc lib functions */ -EXPORT_SYMBOL(__ashldi3); -EXPORT_SYMBOL(__ashrdi3); -EXPORT_SYMBOL(__divsi3); -EXPORT_SYMBOL(__lshrdi3); -EXPORT_SYMBOL(__modsi3); -EXPORT_SYMBOL(__muldi3); -EXPORT_SYMBOL(__ucmpdi2); -EXPORT_SYMBOL(__udivdi3); -EXPORT_SYMBOL(__umoddi3); -EXPORT_SYMBOL(__udivmoddi4); -EXPORT_SYMBOL(__udivsi3); -EXPORT_SYMBOL(__umodsi3); - - /* bitops */ -EXPORT_SYMBOL(_set_bit_le); -EXPORT_SYMBOL(_test_and_set_bit_le); -EXPORT_SYMBOL(_clear_bit_le); -EXPORT_SYMBOL(_test_and_clear_bit_le); -EXPORT_SYMBOL(_change_bit_le); -EXPORT_SYMBOL(_test_and_change_bit_le); -EXPORT_SYMBOL(_find_first_zero_bit_le); -EXPORT_SYMBOL(_find_next_zero_bit_le); - - /* elf */ -EXPORT_SYMBOL(elf_platform); -EXPORT_SYMBOL(elf_hwcap); - -#ifdef CONFIG_PREEMPT -EXPORT_SYMBOL(kernel_flag); -#endif diff --git a/arch/arm26/kernel/asm-offsets.c b/arch/arm26/kernel/asm-offsets.c deleted file mode 100644 index 76d9d7d489a..00000000000 --- a/arch/arm26/kernel/asm-offsets.c +++ /dev/null @@ -1,55 +0,0 @@ -/* - * Copyright (C) 1995-2001 Russell King - * 2001-2002 Keith Owens - * 2003 Ian Molton - * - * Generate definitions needed by assembly language modules. - * This code generates raw asm output which is post-processed to extract - * and format the required data. - * - * 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. - */ - -#include <linux/sched.h> -#include <linux/mm.h> - -#include <asm/pgtable.h> -#include <asm/uaccess.h> - -/* - * Make sure that the compiler and target are compatible. - */ -#if defined(__APCS_32__) && defined(CONFIG_CPU_26) -#error Sorry, your compiler targets APCS-32 but this kernel requires APCS-26 -#endif - -/* Use marker if you need to separate the values later */ - -#define DEFINE(sym, val) \ - asm volatile("\n->" #sym " %0 " #val : : "i" (val)) - -#define BLANK() asm volatile("\n->" : : ) - -int main(void) -{ - DEFINE(TSK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); - BLANK(); - DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm)); - DEFINE(VMA_VM_FLAGS, offsetof(struct vm_area_struct, vm_flags)); - BLANK(); - DEFINE(VM_EXEC, VM_EXEC); - BLANK(); - BLANK(); - DEFINE(PAGE_PRESENT, _PAGE_PRESENT); - DEFINE(PAGE_READONLY, _PAGE_READONLY); - DEFINE(PAGE_NOT_USER, _PAGE_NOT_USER); - DEFINE(PAGE_OLD, _PAGE_OLD); - DEFINE(PAGE_CLEAN, _PAGE_CLEAN); - BLANK(); - DEFINE(PAGE_SZ, PAGE_SIZE); - BLANK(); - DEFINE(SYS_ERROR0, 0x9f0000); - return 0; -} diff --git a/arch/arm26/kernel/calls.S b/arch/arm26/kernel/calls.S deleted file mode 100644 index e3d276827c8..00000000000 --- a/arch/arm26/kernel/calls.S +++ /dev/null @@ -1,265 +0,0 @@ -/* - * linux/arch/arm26/kernel/calls.S - * - * Copyright (C) 2003 Ian Molton - * - * 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. - * - * FIXME - * This file is included twice in entry.S which may not be necessary - */ - -//FIXME - clearly NR_syscalls is never defined here - -#ifndef NR_syscalls -#define NR_syscalls 256 -#else - -__syscall_start: -/* 0 */ .long sys_ni_syscall - .long sys_exit - .long sys_fork_wrapper - .long sys_read - .long sys_write -/* 5 */ .long sys_open - .long sys_close - .long sys_ni_syscall /* was sys_waitpid */ - .long sys_creat - .long sys_link -/* 10 */ .long sys_unlink - .long sys_execve_wrapper - .long sys_chdir - .long sys_time /* used by libc4 */ - .long sys_mknod -/* 15 */ .long sys_chmod - .long sys_lchown16 - .long sys_ni_syscall /* was sys_break */ - .long sys_ni_syscall /* was sys_stat */ - .long sys_lseek -/* 20 */ .long sys_getpid - .long sys_mount - .long sys_oldumount /* used by libc4 */ - .long sys_setuid16 - .long sys_getuid16 -/* 25 */ .long sys_stime - .long sys_ptrace - .long sys_alarm /* used by libc4 */ - .long sys_ni_syscall /* was sys_fstat */ - .long sys_pause -/* 30 */ .long sys_utime /* used by libc4 */ - .long sys_ni_syscall /* was sys_stty */ - .long sys_ni_syscall /* was sys_getty */ - .long sys_access - .long sys_nice -/* 35 */ .long sys_ni_syscall /* was sys_ftime */ - .long sys_sync - .long sys_kill - .long sys_rename - .long sys_mkdir -/* 40 */ .long sys_rmdir - .long sys_dup - .long sys_pipe - .long sys_times - .long sys_ni_syscall /* was sys_prof */ -/* 45 */ .long sys_brk - .long sys_setgid16 - .long sys_getgid16 - .long sys_ni_syscall /* was sys_signal */ - .long sys_geteuid16 -/* 50 */ .long sys_getegid16 - .long sys_acct - .long sys_umount - .long sys_ni_syscall /* was sys_lock */ - .long sys_ioctl -/* 55 */ .long sys_fcntl - .long sys_ni_syscall /* was sys_mpx */ - .long sys_setpgid - .long sys_ni_syscall /* was sys_ulimit */ - .long sys_ni_syscall /* was sys_olduname */ -/* 60 */ .long sys_umask - .long sys_chroot - .long sys_ustat - .long sys_dup2 - .long sys_getppid -/* 65 */ .long sys_getpgrp - .long sys_setsid - .long sys_sigaction - .long sys_ni_syscall /* was sys_sgetmask */ - .long sys_ni_syscall /* was sys_ssetmask */ -/* 70 */ .long sys_setreuid16 - .long sys_setregid16 - .long sys_sigsuspend_wrapper - .long sys_sigpending - .long sys_sethostname -/* 75 */ .long sys_setrlimit - .long sys_old_getrlimit /* used by libc4 */ - .long sys_getrusage - .long sys_gettimeofday - .long sys_settimeofday -/* 80 */ .long sys_getgroups16 - .long sys_setgroups16 - .long old_select /* used by libc4 */ - .long sys_symlink - .long sys_ni_syscall /* was sys_lstat */ -/* 85 */ .long sys_readlink - .long sys_uselib - .long sys_swapon - .long sys_reboot - .long old_readdir /* used by libc4 */ -/* 90 */ .long old_mmap /* used by libc4 */ - .long sys_munmap - .long sys_truncate - .long sys_ftruncate - .long sys_fchmod -/* 95 */ .long sys_fchown16 - .long sys_getpriority - .long sys_setpriority - .long sys_ni_syscall /* was sys_profil */ - .long sys_statfs -/* 100 */ .long sys_fstatfs - .long sys_ni_syscall - .long sys_socketcall - .long sys_syslog - .long sys_setitimer -/* 105 */ .long sys_getitimer - .long sys_newstat - .long sys_newlstat - .long sys_newfstat - .long sys_ni_syscall /* was sys_uname */ -/* 110 */ .long sys_ni_syscall /* was sys_iopl */ - .long sys_vhangup - .long sys_ni_syscall - .long sys_syscall /* call a syscall */ - .long sys_wait4 -/* 115 */ .long sys_swapoff - .long sys_sysinfo - .long sys_ipc - .long sys_fsync - .long sys_sigreturn_wrapper -/* 120 */ .long sys_clone_wapper - .long sys_setdomainname - .long sys_newuname - .long sys_ni_syscall - .long sys_adjtimex -/* 125 */ .long sys_mprotect - .long sys_sigprocmask - .long sys_ni_syscall /* WAS: sys_create_module */ - .long sys_init_module - .long sys_delete_module -/* 130 */ .long sys_ni_syscall /* WAS: sys_get_kernel_syms */ - .long sys_quotactl - .long sys_getpgid - .long sys_fchdir - .long sys_bdflush -/* 135 */ .long sys_sysfs - .long sys_personality - .long sys_ni_syscall /* .long _sys_afs_syscall */ - .long sys_setfsuid16 - .long sys_setfsgid16 -/* 140 */ .long sys_llseek - .long sys_getdents - .long sys_select - .long sys_flock - .long sys_msync -/* 145 */ .long sys_readv - .long sys_writev - .long sys_getsid - .long sys_fdatasync - .long sys_sysctl -/* 150 */ .long sys_mlock - .long sys_munlock - .long sys_mlockall - .long sys_munlockall - .long sys_sched_setparam -/* 155 */ .long sys_sched_getparam - .long sys_sched_setscheduler - .long sys_sched_getscheduler - .long sys_sched_yield - .long sys_sched_get_priority_max -/* 160 */ .long sys_sched_get_priority_min - .long sys_sched_rr_get_interval - .long sys_nanosleep - .long sys_arm_mremap - .long sys_setresuid16 -/* 165 */ .long sys_getresuid16 - .long sys_ni_syscall - .long sys_ni_syscall /* WAS: sys_query_module */ - .long sys_poll - .long sys_nfsservctl -/* 170 */ .long sys_setresgid16 - .long sys_getresgid16 - .long sys_prctl - .long sys_rt_sigreturn_wrapper - .long sys_rt_sigaction -/* 175 */ .long sys_rt_sigprocmask - .long sys_rt_sigpending - .long sys_rt_sigtimedwait - .long sys_rt_sigqueueinfo - .long sys_rt_sigsuspend_wrapper -/* 180 */ .long sys_pread64 - .long sys_pwrite64 - .long sys_chown16 - .long sys_getcwd - .long sys_capget -/* 185 */ .long sys_capset - .long sys_sigaltstack_wrapper - .long sys_sendfile - .long sys_ni_syscall - .long sys_ni_syscall -/* 190 */ .long sys_vfork_wrapper - .long sys_getrlimit - .long sys_mmap2 - .long sys_truncate64 - .long sys_ftruncate64 -/* 195 */ .long sys_stat64 - .long sys_lstat64 - .long sys_fstat64 - .long sys_lchown - .long sys_getuid -/* 200 */ .long sys_getgid - .long sys_geteuid - .long sys_getegid - .long sys_setreuid - .long sys_setregid -/* 205 */ .long sys_getgroups - .long sys_setgroups - .long sys_fchown - .long sys_setresuid - .long sys_getresuid -/* 210 */ .long sys_setresgid - .long sys_getresgid - .long sys_chown - .long sys_setuid - .long sys_setgid -/* 215 */ .long sys_setfsuid - .long sys_setfsgid - .long sys_getdents64 - .long sys_pivot_root - .long sys_mincore -/* 220 */ .long sys_madvise - .long sys_fcntl64 - .long sys_ni_syscall /* TUX */ - .long sys_ni_syscall /* WAS: sys_security */ - .long sys_gettid -/* 225 */ .long sys_readahead - .long sys_setxattr - .long sys_lsetxattr - .long sys_fsetxattr - .long sys_getxattr -/* 230 */ .long sys_lgetxattr - .long sys_fgetxattr - .long sys_listxattr - .long sys_llistxattr - .long sys_flistxattr -/* 235 */ .long sys_removexattr - .long sys_lremovexattr - .long sys_fremovexattr - .long sys_tkill -__syscall_end: - - .rept NR_syscalls - (__syscall_end - __syscall_start) / 4 - .long sys_ni_syscall - .endr -#endif diff --git a/arch/arm26/kernel/compat.c b/arch/arm26/kernel/compat.c deleted file mode 100644 index 21e966ff0aa..00000000000 --- a/arch/arm26/kernel/compat.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * linux/arch/arm26/kernel/compat.c - * - * Copyright (C) 2001 Russell King - * 2003 Ian Molton - * - * 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. - * - * We keep the old params compatibility cruft in one place (here) - * so we don't end up with lots of mess around other places. - * - * NOTE: - * The old struct param_struct is deprecated, but it will be kept in - * the kernel for 5 years from now (2001). This will allow boot loaders - * to convert to the new struct tag way. - */ -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/init.h> - -#include <asm/setup.h> -#include <asm/mach-types.h> -#include <asm/page.h> - -//#include <asm/arch.h> -//#include <asm/mach/irq.h> - -/* - * Usage: - * - do not go blindly adding fields, add them at the end - * - when adding fields, don't rely on the address until - * a patch from me has been released - * - unused fields should be zero (for future expansion) - * - this structure is relatively short-lived - only - * guaranteed to contain useful data in setup_arch() - * - * This is the old deprecated way to pass parameters to the kernel - */ -struct param_struct { - union { - struct { - unsigned long page_size; /* 0 */ - unsigned long nr_pages; /* 4 */ - unsigned long ramdisk_size; /* 8 */ - unsigned long flags; /* 12 */ -#define FLAG_READONLY 1 -#define FLAG_RDLOAD 4 -#define FLAG_RDPROMPT 8 - unsigned long rootdev; /* 16 */ - unsigned long video_num_cols; /* 20 */ - unsigned long video_num_rows; /* 24 */ - unsigned long video_x; /* 28 */ - unsigned long video_y; /* 32 */ - unsigned long memc_control_reg; /* 36 */ - unsigned char sounddefault; /* 40 */ - unsigned char adfsdrives; /* 41 */ - unsigned char bytes_per_char_h; /* 42 */ - unsigned char bytes_per_char_v; /* 43 */ - unsigned long pages_in_bank[4]; /* 44 */ - unsigned long pages_in_vram; /* 60 */ - unsigned long initrd_start; /* 64 */ - unsigned long initrd_size; /* 68 */ - unsigned long rd_start; /* 72 */ - unsigned long system_rev; /* 76 */ - unsigned long system_serial_low; /* 80 */ - unsigned long system_serial_high; /* 84 */ - unsigned long mem_fclk_21285; /* 88 */ - } s; - char unused[256]; - } u1; - union { - char paths[8][128]; - struct { - unsigned long magic; - char n[1024 - sizeof(unsigned long)]; - } s; - } u2; - char commandline[COMMAND_LINE_SIZE]; -}; - -static struct tag * __init memtag(struct tag *tag, unsigned long start, unsigned long size) -{ - tag = tag_next(tag); - tag->hdr.tag = ATAG_MEM; - tag->hdr.size = tag_size(tag_mem32); - tag->u.mem.size = size; - tag->u.mem.start = start; - - return tag; -} - -static void __init build_tag_list(struct param_struct *params, void *taglist) -{ - struct tag *tag = taglist; - - if (params->u1.s.page_size != PAGE_SIZE) { - printk(KERN_WARNING "Warning: bad configuration page, " - "trying to continue\n"); - return; - } - - printk(KERN_DEBUG "Converting old-style param struct to taglist\n"); - - tag->hdr.tag = ATAG_CORE; - tag->hdr.size = tag_size(tag_core); - tag->u.core.flags = params->u1.s.flags & FLAG_READONLY; - tag->u.core.pagesize = params->u1.s.page_size; - tag->u.core.rootdev = params->u1.s.rootdev; - - tag = tag_next(tag); - tag->hdr.tag = ATAG_RAMDISK; - tag->hdr.size = tag_size(tag_ramdisk); - tag->u.ramdisk.flags = (params->u1.s.flags & FLAG_RDLOAD ? 1 : 0) | - (params->u1.s.flags & FLAG_RDPROMPT ? 2 : 0); - tag->u.ramdisk.size = params->u1.s.ramdisk_size; - tag->u.ramdisk.start = params->u1.s.rd_start; - - tag = tag_next(tag); - tag->hdr.tag = ATAG_INITRD; - tag->hdr.size = tag_size(tag_initrd); - tag->u.initrd.start = params->u1.s.initrd_start; - tag->u.initrd.size = params->u1.s.initrd_size; - - tag = tag_next(tag); - tag->hdr.tag = ATAG_SERIAL; - tag->hdr.size = tag_size(tag_serialnr); - tag->u.serialnr.low = params->u1.s.system_serial_low; - tag->u.serialnr.high = params->u1.s.system_serial_high; - - tag = tag_next(tag); - tag->hdr.tag = ATAG_REVISION; - tag->hdr.size = tag_size(tag_revision); - tag->u.revision.rev = params->u1.s.system_rev; - - tag = memtag(tag, PHYS_OFFSET, params->u1.s.nr_pages * PAGE_SIZE); - - tag = tag_next(tag); - tag->hdr.tag = ATAG_ACORN; - tag->hdr.size = tag_size(tag_acorn); - tag->u.acorn.memc_control_reg = params->u1.s.memc_control_reg; - tag->u.acorn.vram_pages = params->u1.s.pages_in_vram; - tag->u.acorn.sounddefault = params->u1.s.sounddefault; - tag->u.acorn.adfsdrives = params->u1.s.adfsdrives; - - tag = tag_next(tag); - tag->hdr.tag = ATAG_CMDLINE; - tag->hdr.size = (strlen(params->commandline) + 3 + - sizeof(struct tag_header)) >> 2; - strcpy(tag->u.cmdline.cmdline, params->commandline); - - tag = tag_next(tag); - tag->hdr.tag = ATAG_NONE; - tag->hdr.size = 0; - - memmove(params, taglist, ((int)tag) - ((int)taglist) + - sizeof(struct tag_header)); -} - -void __init convert_to_tag_list(struct tag *tags) -{ - struct param_struct *params = (struct param_struct *)tags; - build_tag_list(params, ¶ms->u2); -} - -void __init squash_mem_tags(struct tag *tag) -{ - for (; tag->hdr.size; tag = tag_next(tag)) - if (tag->hdr.tag == ATAG_MEM) - tag->hdr.tag = ATAG_NONE; -} diff --git a/arch/arm26/kernel/dma.c b/arch/arm26/kernel/dma.c deleted file mode 100644 index 80b5a774d90..00000000000 --- a/arch/arm26/kernel/dma.c +++ /dev/null @@ -1,273 +0,0 @@ -/* - * linux/arch/arm26/kernel/dma.c - * - * Copyright (C) 1995-2000 Russell King - * 2003 Ian Molton - * - * 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. - * - * Front-end to the DMA handling. This handles the allocation/freeing - * of DMA channels, and provides a unified interface to the machines - * DMA facilities. - */ -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/sched.h> -#include <linux/mman.h> -#include <linux/init.h> -#include <linux/spinlock.h> -#include <linux/errno.h> - -#include <asm/dma.h> - -DEFINE_SPINLOCK(dma_spin_lock); - -static dma_t dma_chan[MAX_DMA_CHANNELS]; - -/* - * Get dma list for /proc/dma - */ -int get_dma_list(char *buf) -{ - dma_t *dma; - char *p = buf; - int i; - - for (i = 0, dma = dma_chan; i < MAX_DMA_CHANNELS; i++, dma++) - if (dma->lock) - p += sprintf(p, "%2d: %14s %s\n", i, - dma->d_ops->type, dma->device_id); - - return p - buf; -} - -/* - * Request DMA channel - * - * On certain platforms, we have to allocate an interrupt as well... - */ -int request_dma(dmach_t channel, const char *device_id) -{ - dma_t *dma = dma_chan + channel; - int ret; - - if (channel >= MAX_DMA_CHANNELS || !dma->d_ops) - goto bad_dma; - - if (xchg(&dma->lock, 1) != 0) - goto busy; - - dma->device_id = device_id; - dma->active = 0; - dma->invalid = 1; - - ret = 0; - if (dma->d_ops->request) - ret = dma->d_ops->request(channel, dma); - - if (ret) - xchg(&dma->lock, 0); - - return ret; - -bad_dma: - printk(KERN_ERR "dma: trying to allocate DMA%d\n", channel); - return -EINVAL; - -busy: - return -EBUSY; -} - -/* - * Free DMA channel - * - * On certain platforms, we have to free interrupt as well... - */ -void free_dma(dmach_t channel) -{ - dma_t *dma = dma_chan + channel; - - if (channel >= MAX_DMA_CHANNELS || !dma->d_ops) - goto bad_dma; - - if (dma->active) { - printk(KERN_ERR "dma%d: freeing active DMA\n", channel); - dma->d_ops->disable(channel, dma); - dma->active = 0; - } - - if (xchg(&dma->lock, 0) != 0) { - if (dma->d_ops->free) - dma->d_ops->free(channel, dma); - return; - } - - printk(KERN_ERR "dma%d: trying to free free DMA\n", channel); - return; - -bad_dma: - printk(KERN_ERR "dma: trying to free DMA%d\n", channel); -} - -/* Set DMA Scatter-Gather list - */ -void set_dma_sg (dmach_t channel, struct scatterlist *sg, int nr_sg) -{ - dma_t *dma = dma_chan + channel; - - if (dma->active) - printk(KERN_ERR "dma%d: altering DMA SG while " - "DMA active\n", channel); - - dma->sg = sg; - dma->sgcount = nr_sg; - dma->using_sg = 1; - dma->invalid = 1; -} - -/* Set DMA address - * - * Copy address to the structure, and set the invalid bit - */ -void set_dma_addr (dmach_t channel, unsigned long physaddr) -{ - dma_t *dma = dma_chan + channel; - - if (dma->active) - printk(KERN_ERR "dma%d: altering DMA address while " - "DMA active\n", channel); - - dma->sg = &dma->buf; - dma->sgcount = 1; - dma->buf.__address = (char *)physaddr;//FIXME - not pretty - dma->using_sg = 0; - dma->invalid = 1; -} - -/* Set DMA byte count - * - * Copy address to the structure, and set the invalid bit - */ -void set_dma_count (dmach_t channel, unsigned long count) -{ - dma_t *dma = dma_chan + channel; - - if (dma->active) - printk(KERN_ERR "dma%d: altering DMA count while " - "DMA active\n", channel); - - dma->sg = &dma->buf; - dma->sgcount = 1; - dma->buf.length = count; - dma->using_sg = 0; - dma->invalid = 1; -} - -/* Set DMA direction mode - */ -void set_dma_mode (dmach_t channel, dmamode_t mode) -{ - dma_t *dma = dma_chan + channel; - - if (dma->active) - printk(KERN_ERR "dma%d: altering DMA mode while " - "DMA active\n", channel); - - dma->dma_mode = mode; - dma->invalid = 1; -} - -/* Enable DMA channel - */ -void enable_dma (dmach_t channel) -{ - dma_t *dma = dma_chan + channel; - - if (!dma->lock) - goto free_dma; - - if (dma->active == 0) { - dma->active = 1; - dma->d_ops->enable(channel, dma); - } - return; - -free_dma: - printk(KERN_ERR "dma%d: trying to enable free DMA\n", channel); - BUG(); -} - -/* Disable DMA channel - */ -void disable_dma (dmach_t channel) -{ - dma_t *dma = dma_chan + channel; - - if (!dma->lock) - goto free_dma; - - if (dma->active == 1) { - dma->active = 0; - dma->d_ops->disable(channel, dma); - } - return; - -free_dma: - printk(KERN_ERR "dma%d: trying to disable free DMA\n", channel); - BUG(); -} - -/* - * Is the specified DMA channel active? - */ -int dma_channel_active(dmach_t channel) -{ - return dma_chan[channel].active; -} - -void set_dma_page(dmach_t channel, char pagenr) -{ - printk(KERN_ERR "dma%d: trying to set_dma_page\n", channel); -} - -void set_dma_speed(dmach_t channel, int cycle_ns) -{ - dma_t *dma = dma_chan + channel; - int ret = 0; - - if (dma->d_ops->setspeed) - ret = dma->d_ops->setspeed(channel, dma, cycle_ns); - dma->speed = ret; -} - -int get_dma_residue(dmach_t channel) -{ - dma_t *dma = dma_chan + channel; - int ret = 0; - - if (dma->d_ops->residue) - ret = dma->d_ops->residue(channel, dma); - - return ret; -} - -void __init init_dma(void) -{ - arch_dma_init(dma_chan); -} - -EXPORT_SYMBOL(request_dma); -EXPORT_SYMBOL(free_dma); -EXPORT_SYMBOL(enable_dma); -EXPORT_SYMBOL(disable_dma); -EXPORT_SYMBOL(set_dma_addr); -EXPORT_SYMBOL(set_dma_count); -EXPORT_SYMBOL(set_dma_mode); -EXPORT_SYMBOL(set_dma_page); -EXPORT_SYMBOL(get_dma_residue); -EXPORT_SYMBOL(set_dma_sg); -EXPORT_SYMBOL(set_dma_speed); - -EXPORT_SYMBOL(dma_spin_lock); diff --git a/arch/arm26/kernel/ecard.c b/arch/arm26/kernel/ecard.c deleted file mode 100644 index e2bcefc91cc..00000000000 --- a/arch/arm26/kernel/ecard.c +++ /dev/null @@ -1,847 +0,0 @@ -/* - * linux/arch/arm26/kernel/ecard.c - * - * Copyright 1995-2001 Russell King - * Copyright 2003 Ian Molton - * - * 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. - * - * Find all installed expansion cards, and handle interrupts from them. - * - * Created from information from Acorns RiscOS3 PRMs - * 15-Jun-2003 IM Modified from ARM32 (RiscPC capable) version - * 10-Jan-1999 RMK Run loaders in a simulated RISC OS environment. - * 06-May-1997 RMK Added blacklist for cards whose loader doesn't work. - * 12-Sep-1997 RMK Created new handling of interrupt enables/disables - * - cards can now register their own routine to control - * interrupts (recommended). - * 29-Sep-1997 RMK Expansion card interrupt hardware not being re-enabled - * on reset from Linux. (Caused cards not to respond - * under RiscOS without hard reset). - * - */ -#define ECARD_C - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/reboot.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/proc_fs.h> -#include <linux/device.h> -#include <linux/init.h> - -#include <asm/dma.h> -#include <asm/ecard.h> -#include <asm/hardware.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/mmu_context.h> -#include <asm/irqchip.h> -#include <asm/tlbflush.h> - -enum req { - req_readbytes, - req_reset -}; - -struct ecard_request { - enum req req; - ecard_t *ec; - unsigned int address; - unsigned int length; - unsigned int use_loader; - void *buffer; -}; - -struct expcard_blacklist { - unsigned short manufacturer; - unsigned short product; - const char *type; -}; - -static ecard_t *cards; -static ecard_t *slot_to_expcard[MAX_ECARDS]; -static unsigned int ectcr; - -/* List of descriptions of cards which don't have an extended - * identification, or chunk directories containing a description. - */ -static struct expcard_blacklist __initdata blacklist[] = { - { MANU_ACORN, PROD_ACORN_ETHER1, "Acorn Ether1" } -}; - -asmlinkage extern int -ecard_loader_reset(volatile unsigned char *pa, loader_t loader); -asmlinkage extern int -ecard_loader_read(int off, volatile unsigned char *pa, loader_t loader); - -static const struct ecard_id * -ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec); - -static inline unsigned short -ecard_getu16(unsigned char *v) -{ - return v[0] | v[1] << 8; -} - -static inline signed long -ecard_gets24(unsigned char *v) -{ - return v[0] | v[1] << 8 | v[2] << 16 | ((v[2] & 0x80) ? 0xff000000 : 0); -} - -static inline ecard_t * -slot_to_ecard(unsigned int slot) -{ - return slot < MAX_ECARDS ? slot_to_expcard[slot] : NULL; -} - -/* ===================== Expansion card daemon ======================== */ -/* - * Since the loader programs on the expansion cards need to be run - * in a specific environment, create a separate task with this - * environment up, and pass requests to this task as and when we - * need to. - * - * This should allow 99% of loaders to be called from Linux. - * - * From a security standpoint, we trust the card vendors. This - * may be a misplaced trust. - */ -#define BUS_ADDR(x) ((((unsigned long)(x)) << 2) + IO_BASE) -#define POD_INT_ADDR(x) ((volatile unsigned char *)\ - ((BUS_ADDR((x)) - IO_BASE) + IO_START)) - -static inline void ecard_task_reset(struct ecard_request *req) -{ - struct expansion_card *ec = req->ec; - if (ec->loader) - ecard_loader_reset(POD_INT_ADDR(ec->podaddr), ec->loader); -} - -static void -ecard_task_readbytes(struct ecard_request *req) -{ - unsigned char *buf = (unsigned char *)req->buffer; - volatile unsigned char *base_addr = - (volatile unsigned char *)POD_INT_ADDR(req->ec->podaddr); - unsigned int len = req->length; - unsigned int off = req->address; - - if (!req->use_loader || !req->ec->loader) { - off *= 4; - while (len--) { - *buf++ = base_addr[off]; - off += 4; - } - } else { - while(len--) { - /* - * The following is required by some - * expansion card loader programs. - */ - *(unsigned long *)0x108 = 0; - *buf++ = ecard_loader_read(off++, base_addr, - req->ec->loader); - } - } -} - -static void ecard_do_request(struct ecard_request *req) -{ - switch (req->req) { - case req_readbytes: - ecard_task_readbytes(req); - break; - - case req_reset: - ecard_task_reset(req); - break; - } -} - -/* - * On 26-bit processors, we don't need the kcardd thread to access the - * expansion card loaders. We do it directly. - */ -#define ecard_call(req) ecard_do_request(req) - -/* ======================= Mid-level card control ===================== */ - -static void -ecard_readbytes(void *addr, ecard_t *ec, int off, int len, int useld) -{ - struct ecard_request req; - - req.req = req_readbytes; - req.ec = ec; - req.address = off; - req.length = len; - req.use_loader = useld; - req.buffer = addr; - - ecard_call(&req); -} - -int ecard_readchunk(struct in_chunk_dir *cd, ecard_t *ec, int id, int num) -{ - struct ex_chunk_dir excd; - int index = 16; - int useld = 0; - - if (!ec->cid.cd) - return 0; - - while(1) { - ecard_readbytes(&excd, ec, index, 8, useld); - index += 8; - if (c_id(&excd) == 0) { - if (!useld && ec->loader) { - useld = 1; - index = 0; - continue; - } - return 0; - } - if (c_id(&excd) == 0xf0) { /* link */ - index = c_start(&excd); - continue; - } - if (c_id(&excd) == 0x80) { /* loader */ - if (!ec->loader) { - ec->loader = kmalloc(c_len(&excd), - GFP_KERNEL); - if (ec->loader) - ecard_readbytes(ec->loader, ec, - (int)c_start(&excd), - c_len(&excd), useld); - else - return 0; - } - continue; - } - if (c_id(&excd) == id && num-- == 0) - break; - } - - if (c_id(&excd) & 0x80) { - switch (c_id(&excd) & 0x70) { - case 0x70: - ecard_readbytes((unsigned char *)excd.d.string, ec, - (int)c_start(&excd), c_len(&excd), - useld); - break; - case 0x00: - break; - } - } - cd->start_offset = c_start(&excd); - memcpy(cd->d.string, excd.d.string, 256); - return 1; -} - -/* ======================= Interrupt control ============================ */ - -static void ecard_def_irq_enable(ecard_t *ec, int irqnr) -{ -} - -static void ecard_def_irq_disable(ecard_t *ec, int irqnr) -{ -} - -static int ecard_def_irq_pending(ecard_t *ec) -{ - return !ec->irqmask || ec->irqaddr[0] & ec->irqmask; -} - -static void ecard_def_fiq_enable(ecard_t *ec, int fiqnr) -{ - panic("ecard_def_fiq_enable called - impossible"); -} - -static void ecard_def_fiq_disable(ecard_t *ec, int fiqnr) -{ - panic("ecard_def_fiq_disable called - impossible"); -} - -static int ecard_def_fiq_pending(ecard_t *ec) -{ - return !ec->fiqmask || ec->fiqaddr[0] & ec->fiqmask; -} - -static expansioncard_ops_t ecard_default_ops = { - ecard_def_irq_enable, - ecard_def_irq_disable, - ecard_def_irq_pending, - ecard_def_fiq_enable, - ecard_def_fiq_disable, - ecard_def_fiq_pending -}; - -/* - * Enable and disable interrupts from expansion cards. - * (interrupts are disabled for these functions). - * - * They are not meant to be called directly, but via enable/disable_irq. - */ -static void ecard_irq_unmask(unsigned int irqnr) -{ - ecard_t *ec = slot_to_ecard(irqnr - 32); - - if (ec) { - if (!ec->ops) - ec->ops = &ecard_default_ops; - - if (ec->claimed && ec->ops->irqenable) - ec->ops->irqenable(ec, irqnr); - else - printk(KERN_ERR "ecard: rejecting request to " - "enable IRQs for %d\n", irqnr); - } -} - -static void ecard_irq_mask(unsigned int irqnr) -{ - ecard_t *ec = slot_to_ecard(irqnr - 32); - - if (ec) { - if (!ec->ops) - ec->ops = &ecard_default_ops; - - if (ec->ops && ec->ops->irqdisable) - ec->ops->irqdisable(ec, irqnr); - } -} - -static struct irqchip ecard_chip = { - .ack = ecard_irq_mask, - .mask = ecard_irq_mask, - .unmask = ecard_irq_unmask, -}; - -void ecard_enablefiq(unsigned int fiqnr) -{ - ecard_t *ec = slot_to_ecard(fiqnr); - - if (ec) { - if (!ec->ops) - ec->ops = &ecard_default_ops; - - if (ec->claimed && ec->ops->fiqenable) - ec->ops->fiqenable(ec, fiqnr); - else - printk(KERN_ERR "ecard: rejecting request to " - "enable FIQs for %d\n", fiqnr); - } -} - -void ecard_disablefiq(unsigned int fiqnr) -{ - ecard_t *ec = slot_to_ecard(fiqnr); - - if (ec) { - if (!ec->ops) - ec->ops = &ecard_default_ops; - - if (ec->ops->fiqdisable) - ec->ops->fiqdisable(ec, fiqnr); - } -} - -static void -ecard_dump_irq_state(ecard_t *ec) -{ - printk(" %d: %sclaimed, ", - ec->slot_no, - ec->claimed ? "" : "not "); - - if (ec->ops && ec->ops->irqpending && - ec->ops != &ecard_default_ops) - printk("irq %spending\n", - ec->ops->irqpending(ec) ? "" : "not "); - else - printk("irqaddr %p, mask = %02X, status = %02X\n", - ec->irqaddr, ec->irqmask, *ec->irqaddr); -} - -static void ecard_check_lockup(struct irqdesc *desc) -{ - static int last, lockup; - ecard_t *ec; - - /* - * If the timer interrupt has not run since the last million - * unrecognised expansion card interrupts, then there is - * something seriously wrong. Disable the expansion card - * interrupts so at least we can continue. - * - * Maybe we ought to start a timer to re-enable them some time - * later? - */ - if (last == jiffies) { - lockup += 1; - if (lockup > 1000000) { - printk(KERN_ERR "\nInterrupt lockup detected - " - "disabling all expansion card interrupts\n"); - - desc->chip->mask(IRQ_EXPANSIONCARD); - - printk("Expansion card IRQ state:\n"); - - for (ec = cards; ec; ec = ec->next) - ecard_dump_irq_state(ec); - } - } else - lockup = 0; - - /* - * If we did not recognise the source of this interrupt, - * warn the user, but don't flood the user with these messages. - */ - if (!last || time_after(jiffies, (unsigned long)(last + 5*HZ))) { - last = jiffies; - printk(KERN_WARNING "Unrecognised interrupt from backplane\n"); - } -} - -static void -ecard_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) -{ - ecard_t *ec; - int called = 0; - - desc->chip->mask(irq); - for (ec = cards; ec; ec = ec->next) { - int pending; - - if (!ec->claimed || ec->irq == NO_IRQ) - continue; - - if (ec->ops && ec->ops->irqpending) - pending = ec->ops->irqpending(ec); - else - pending = ecard_default_ops.irqpending(ec); - - if (pending) { - struct irqdesc *d = irq_desc + ec->irq; - d->handle(ec->irq, d, regs); - called ++; - } - } - desc->chip->unmask(irq); - - if (called == 0) - ecard_check_lockup(desc); -} - -#define ecard_irqexp_handler NULL -#define ecard_probeirqhw() (0) - -unsigned int ecard_address(ecard_t *ec, card_type_t type, card_speed_t speed) -{ - unsigned long address = 0; - int slot = ec->slot_no; - - ectcr &= ~(1 << slot); - - switch (type) { - case ECARD_MEMC: - address = IO_EC_MEMC_BASE + (slot << 12); - break; - - case ECARD_IOC: - address = IO_EC_IOC_BASE + (slot << 12) + (speed << 17); - break; - - default: - break; - } - - return address; -} - -static int ecard_prints(char *buffer, ecard_t *ec) -{ - char *start = buffer; - - buffer += sprintf(buffer, " %d: ", ec->slot_no); - - if (ec->cid.id == 0) { - struct in_chunk_dir incd; - - buffer += sprintf(buffer, "[%04X:%04X] ", - ec->cid.manufacturer, ec->cid.product); - - if (!ec->card_desc && ec->cid.cd && - ecard_readchunk(&incd, ec, 0xf5, 0)) { - ec->card_desc = kmalloc(strlen(incd.d.string)+1, GFP_KERNEL); - - if (ec->card_desc) - strcpy((char *)ec->card_desc, incd.d.string); - } - - buffer += sprintf(buffer, "%s\n", ec->card_desc ? ec->card_desc : "*unknown*"); - } else - buffer += sprintf(buffer, "Simple card %d\n", ec->cid.id); - - return buffer - start; -} - -static int get_ecard_dev_info(char *buf, char **start, off_t pos, int count) -{ - ecard_t *ec = cards; - off_t at = 0; - int len, cnt; - - cnt = 0; - while (ec && count > cnt) { - len = ecard_prints(buf, ec); - at += len; - if (at >= pos) { - if (!*start) { - *start = buf + (pos - (at - len)); - cnt = at - pos; - } else - cnt += len; - buf += len; - } - ec = ec->next; - } - return (count > cnt) ? cnt : count; -} - -static struct proc_dir_entry *proc_bus_ecard_dir = NULL; - -static void ecard_proc_init(void) -{ - proc_bus_ecard_dir = proc_mkdir("ecard", proc_bus); - create_proc_info_entry("devices", 0, proc_bus_ecard_dir, - get_ecard_dev_info); -} - -#define ec_set_resource(ec,nr,st,sz,flg) \ - do { \ - (ec)->resource[nr].name = ec->dev.bus_id; \ - (ec)->resource[nr].start = st; \ - (ec)->resource[nr].end = (st) + (sz) - 1; \ - (ec)->resource[nr].flags = flg; \ - } while (0) - -static void __init ecard_init_resources(struct expansion_card *ec) -{ - unsigned long base = PODSLOT_IOC0_BASE; - unsigned int slot = ec->slot_no; - int i; - - ec_set_resource(ec, ECARD_RES_MEMC, - PODSLOT_MEMC_BASE + (slot << 14), - PODSLOT_MEMC_SIZE, IORESOURCE_MEM); - - for (i = 0; i < ECARD_RES_IOCSYNC - ECARD_RES_IOCSLOW; i++) { - ec_set_resource(ec, i + ECARD_RES_IOCSLOW, - base + (slot << 14) + (i << 19), - PODSLOT_IOC_SIZE, IORESOURCE_MEM); - } - - for (i = 0; i < ECARD_NUM_RESOURCES; i++) { - if (ec->resource[i].start && - request_resource(&iomem_resource, &ec->resource[i])) { - printk(KERN_ERR "%s: resource(s) not available\n", - ec->dev.bus_id); - ec->resource[i].end -= ec->resource[i].start; - ec->resource[i].start = 0; - } - } -} - -static ssize_t ecard_show_irq(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct expansion_card *ec = ECARD_DEV(dev); - return sprintf(buf, "%u\n", ec->irq); -} - -static ssize_t ecard_show_vendor(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct expansion_card *ec = ECARD_DEV(dev); - return sprintf(buf, "%u\n", ec->cid.manufacturer); -} - -static ssize_t ecard_show_device(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct expansion_card *ec = ECARD_DEV(dev); - return sprintf(buf, "%u\n", ec->cid.product); -} - -static ssize_t ecard_show_dma(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct expansion_card *ec = ECARD_DEV(dev); - return sprintf(buf, "%u\n", ec->dma); -} - -static ssize_t ecard_show_resources(struct device *dev, struct device_attribute *attr, char *buf) -{ - struct expansion_card *ec = ECARD_DEV(dev); - char *str = buf; - int i; - - for (i = 0; i < ECARD_NUM_RESOURCES; i++) - str += sprintf(str, "%08lx %08lx %08lx\n", - ec->resource[i].start, - ec->resource[i].end, - ec->resource[i].flags); - - return str - buf; -} - -static DEVICE_ATTR(irq, S_IRUGO, ecard_show_irq, NULL); -static DEVICE_ATTR(vendor, S_IRUGO, ecard_show_vendor, NULL); -static DEVICE_ATTR(device, S_IRUGO, ecard_show_device, NULL); -static DEVICE_ATTR(dma, S_IRUGO, ecard_show_dma, NULL); -static DEVICE_ATTR(resource, S_IRUGO, ecard_show_resources, NULL); - -/* - * Probe for an expansion card. - * - * If bit 1 of the first byte of the card is set, then the - * card does not exist. - */ -static int __init -ecard_probe(int slot, card_type_t type) -{ - ecard_t **ecp; - ecard_t *ec; - struct ex_ecid cid; - int i, rc = -ENOMEM; - - ec = kzalloc(sizeof(ecard_t), GFP_KERNEL); - if (!ec) - goto nomem; - - ec->slot_no = slot; - ec->type = type; - ec->irq = NO_IRQ; - ec->fiq = NO_IRQ; - ec->dma = NO_DMA; - ec->card_desc = NULL; - ec->ops = &ecard_default_ops; - - rc = -ENODEV; - if ((ec->podaddr = ecard_address(ec, type, ECARD_SYNC)) == 0) - goto nodev; - - cid.r_zero = 1; - ecard_readbytes(&cid, ec, 0, 16, 0); - if (cid.r_zero) - goto nodev; - - ec->cid.id = cid.r_id; - ec->cid.cd = cid.r_cd; - ec->cid.is = cid.r_is; - ec->cid.w = cid.r_w; - ec->cid.manufacturer = ecard_getu16(cid.r_manu); - ec->cid.product = ecard_getu16(cid.r_prod); - ec->cid.country = cid.r_country; - ec->cid.irqmask = cid.r_irqmask; - ec->cid.irqoff = ecard_gets24(cid.r_irqoff); - ec->cid.fiqmask = cid.r_fiqmask; - ec->cid.fiqoff = ecard_gets24(cid.r_fiqoff); - ec->fiqaddr = - ec->irqaddr = (unsigned char *)ioaddr(ec->podaddr); - - if (ec->cid.is) { - ec->irqmask = ec->cid.irqmask; - ec->irqaddr += ec->cid.irqoff; - ec->fiqmask = ec->cid.fiqmask; - ec->fiqaddr += ec->cid.fiqoff; - } else { - ec->irqmask = 1; - ec->fiqmask = 4; - } - - for (i = 0; i < ARRAY_SIZE(blacklist); i++) - if (blacklist[i].manufacturer == ec->cid.manufacturer && - blacklist[i].product == ec->cid.product) { - ec->card_desc = blacklist[i].type; - break; - } - - snprintf(ec->dev.bus_id, sizeof(ec->dev.bus_id), "ecard%d", slot); - ec->dev.parent = NULL; - ec->dev.bus = &ecard_bus_type; - ec->dev.dma_mask = &ec->dma_mask; - ec->dma_mask = (u64)0xffffffff; - - ecard_init_resources(ec); - - /* - * hook the interrupt handlers - */ - ec->irq = 32 + slot; - set_irq_chip(ec->irq, &ecard_chip); - set_irq_handler(ec->irq, do_level_IRQ); - set_irq_flags(ec->irq, IRQF_VALID); - - for (ecp = &cards; *ecp; ecp = &(*ecp)->next); - - *ecp = ec; - slot_to_expcard[slot] = ec; - - device_register(&ec->dev); - device_create_file(&ec->dev, &dev_attr_dma); - device_create_file(&ec->dev, &dev_attr_irq); - device_create_file(&ec->dev, &dev_attr_resource); - device_create_file(&ec->dev, &dev_attr_vendor); - device_create_file(&ec->dev, &dev_attr_device); - - return 0; - -nodev: - kfree(ec); -nomem: - return rc; -} - -/* - * Initialise the expansion card system. - * Locate all hardware - interrupt management and - * actual cards. - */ -static int __init ecard_init(void) -{ - int slot, irqhw; - - printk("Probing expansion cards\n"); - - for (slot = 0; slot < MAX_ECARDS; slot ++) { - ecard_probe(slot, ECARD_IOC); - } - - irqhw = ecard_probeirqhw(); - - set_irq_chained_handler(IRQ_EXPANSIONCARD, - irqhw ? ecard_irqexp_handler : ecard_irq_handler); - - ecard_proc_init(); - - return 0; -} - -subsys_initcall(ecard_init); - -/* - * ECARD "bus" - */ -static const struct ecard_id * -ecard_match_device(const struct ecard_id *ids, struct expansion_card *ec) -{ - int i; - - for (i = 0; ids[i].manufacturer != 65535; i++) - if (ec->cid.manufacturer == ids[i].manufacturer && - ec->cid.product == ids[i].product) - return ids + i; - - return NULL; -} - -static int ecard_drv_probe(struct device *dev) -{ - struct expansion_card *ec = ECARD_DEV(dev); - struct ecard_driver *drv = ECARD_DRV(dev->driver); - const struct ecard_id *id; - int ret; - - id = ecard_match_device(drv->id_table, ec); - - ecard_claim(ec); - ret = drv->probe(ec, id); - if (ret) - ecard_release(ec); - return ret; -} - -static int ecard_drv_remove(struct device *dev) -{ - struct expansion_card *ec = ECARD_DEV(dev); - struct ecard_driver *drv = ECARD_DRV(dev->driver); - - drv->remove(ec); - ecard_release(ec); - - return 0; -} - -/* - * Before rebooting, we must make sure that the expansion card is in a - * sensible state, so it can be re-detected. This means that the first - * page of the ROM must be visible. We call the expansion cards reset - * handler, if any. - */ -static void ecard_drv_shutdown(struct device *dev) -{ - struct expansion_card *ec = ECARD_DEV(dev); - struct ecard_driver *drv = ECARD_DRV(dev->driver); - struct ecard_request req; - - if (drv->shutdown) - drv->shutdown(ec); - ecard_release(ec); - req.req = req_reset; - req.ec = ec; - ecard_call(&req); -} - -int ecard_register_driver(struct ecard_driver *drv) -{ - drv->drv.bus = &ecard_bus_type; - drv->drv.probe = ecard_drv_probe; - drv->drv.remove = ecard_drv_remove; - drv->drv.shutdown = ecard_drv_shutdown; - - return driver_register(&drv->drv); -} - -void ecard_remove_driver(struct ecard_driver *drv) -{ - driver_unregister(&drv->drv); -} - -static int ecard_match(struct device *_dev, struct device_driver *_drv) -{ - struct expansion_card *ec = ECARD_DEV(_dev); - struct ecard_driver *drv = ECARD_DRV(_drv); - int ret; - - if (drv->id_table) { - ret = ecard_match_device(drv->id_table, ec) != NULL; - } else { - ret = ec->cid.id == drv->id; - } - - return ret; -} - -struct bus_type ecard_bus_type = { - .name = "ecard", - .match = ecard_match, -}; - -static int ecard_bus_init(void) -{ - return bus_register(&ecard_bus_type); -} - -postcore_initcall(ecard_bus_init); - -EXPORT_SYMBOL(ecard_readchunk); -EXPORT_SYMBOL(ecard_address); -EXPORT_SYMBOL(ecard_register_driver); -EXPORT_SYMBOL(ecard_remove_driver); -EXPORT_SYMBOL(ecard_bus_type); diff --git a/arch/arm26/kernel/entry.S b/arch/arm26/kernel/entry.S deleted file mode 100644 index 91496cc687b..00000000000 --- a/arch/arm26/kernel/entry.S +++ /dev/null @@ -1,951 +0,0 @@ -/* arch/arm26/kernel/entry.S - * - * Assembled from chunks of code in arch/arm - * - * Copyright (C) 2003 Ian Molton - * Based on the work of RMK. - * - */ - -#include <linux/linkage.h> - -#include <asm/assembler.h> -#include <asm/asm-offsets.h> -#include <asm/errno.h> -#include <asm/hardware.h> -#include <asm/sysirq.h> -#include <asm/thread_info.h> -#include <asm/page.h> -#include <asm/ptrace.h> - - .macro zero_fp -#ifndef CONFIG_NO_FRAME_POINTER - mov fp, #0 -#endif - .endm - - .text - -@ Bad Abort numbers -@ ----------------- -@ -#define BAD_PREFETCH 0 -#define BAD_DATA 1 -#define BAD_ADDREXCPTN 2 -#define BAD_IRQ 3 -#define BAD_UNDEFINSTR 4 - -@ OS version number used in SWIs -@ RISC OS is 0 -@ RISC iX is 8 -@ -#define OS_NUMBER 9 -#define ARMSWI_OFFSET 0x000f0000 - -@ -@ Stack format (ensured by USER_* and SVC_*) -@ PSR and PC are comined on arm26 -@ - -#define S_OFF 8 - -#define S_OLD_R0 64 -#define S_PC 60 -#define S_LR 56 -#define S_SP 52 -#define S_IP 48 -#define S_FP 44 -#define S_R10 40 -#define S_R9 36 -#define S_R8 32 -#define S_R7 28 -#define S_R6 24 -#define S_R5 20 -#define S_R4 16 -#define S_R3 12 -#define S_R2 8 -#define S_R1 4 -#define S_R0 0 - - .macro save_user_regs - str r0, [sp, #-4]! @ Store SVC r0 - str lr, [sp, #-4]! @ Store user mode PC - sub sp, sp, #15*4 - stmia sp, {r0 - lr}^ @ Store the other user-mode regs - mov r0, r0 - .endm - - .macro slow_restore_user_regs - ldmia sp, {r0 - lr}^ @ restore the user regs not including PC - mov r0, r0 - ldr lr, [sp, #15*4] @ get user PC - add sp, sp, #15*4+8 @ free stack - movs pc, lr @ return - .endm - - .macro fast_restore_user_regs - add sp, sp, #S_OFF - ldmib sp, {r1 - lr}^ - mov r0, r0 - ldr lr, [sp, #15*4] - add sp, sp, #15*4+8 - movs pc, lr - .endm - - .macro save_svc_regs - str sp, [sp, #-16]! - str lr, [sp, #8] - str lr, [sp, #4] - stmfd sp!, {r0 - r12} - mov r0, #-1 - str r0, [sp, #S_OLD_R0] - zero_fp - .endm - - .macro save_svc_regs_irq - str sp, [sp, #-16]! - str lr, [sp, #4] - ldr lr, .LCirq - ldr lr, [lr] - str lr, [sp, #8] - stmfd sp!, {r0 - r12} - mov r0, #-1 - str r0, [sp, #S_OLD_R0] - zero_fp - .endm - - .macro restore_svc_regs - ldmfd sp, {r0 - pc}^ - .endm - - .macro mask_pc, rd, rm - bic \rd, \rm, #PCMASK - .endm - - .macro disable_irqs, temp - mov \temp, pc - orr \temp, \temp, #PSR_I_BIT - teqp \temp, #0 - .endm - - .macro enable_irqs, temp - mov \temp, pc - and \temp, \temp, #~PSR_I_BIT - teqp \temp, #0 - .endm - - .macro initialise_traps_extra - .endm - - .macro get_thread_info, rd - mov \rd, sp, lsr #13 - mov \rd, \rd, lsl #13 - .endm - -/* - * These are the registers used in the syscall handler, and allow us to - * have in theory up to 7 arguments to a function - r0 to r6. - * - * Note that tbl == why is intentional. - * - * We must set at least "tsk" and "why" when calling ret_with_reschedule. - */ -scno .req r7 @ syscall number -tbl .req r8 @ syscall table pointer -why .req r8 @ Linux syscall (!= 0) -tsk .req r9 @ current thread_info - -/* - * Get the system call number. - */ - .macro get_scno - mask_pc lr, lr - ldr scno, [lr, #-4] @ get SWI instruction - .endm -/* - * ----------------------------------------------------------------------- - */ - -/* - * We rely on the fact that R0 is at the bottom of the stack (due to - * slow/fast restore user regs). - */ -#if S_R0 != 0 -#error "Please fix" -#endif - -/* - * This is the fast syscall return path. We do as little as - * possible here, and this includes saving r0 back into the SVC - * stack. - */ -ret_fast_syscall: - disable_irqs r1 @ disable interrupts - ldr r1, [tsk, #TI_FLAGS] - tst r1, #_TIF_WORK_MASK - bne fast_work_pending - fast_restore_user_regs - -/* - * Ok, we need to do extra processing, enter the slow path. - */ -fast_work_pending: - str r0, [sp, #S_R0+S_OFF]! @ returned r0 -work_pending: - tst r1, #_TIF_NEED_RESCHED - bne work_resched - tst r1, #_TIF_NOTIFY_RESUME | _TIF_SIGPENDING - beq no_work_pending - mov r0, sp @ 'regs' - mov r2, why @ 'syscall' - bl do_notify_resume - disable_irqs r1 @ disable interrupts - b no_work_pending - -work_resched: - bl schedule -/* - * "slow" syscall return path. "why" tells us if this was a real syscall. - */ -ENTRY(ret_to_user) -ret_slow_syscall: - disable_irqs r1 @ disable interrupts - ldr r1, [tsk, #TI_FLAGS] - tst r1, #_TIF_WORK_MASK - bne work_pending -no_work_pending: - slow_restore_user_regs - -/* - * This is how we return from a fork. - */ -ENTRY(ret_from_fork) - bl schedule_tail - get_thread_info tsk - ldr r1, [tsk, #TI_FLAGS] @ check for syscall tracing - mov why, #1 - tst r1, #_TIF_SYSCALL_TRACE @ are we tracing syscalls? - beq ret_slow_syscall - mov r1, sp - mov r0, #1 @ trace exit [IP = 1] - bl syscall_trace - b ret_slow_syscall - -// FIXME - is this strictly necessary? -#include "calls.S" - -/*============================================================================= - * SWI handler - *----------------------------------------------------------------------------- - */ - - .align 5 -ENTRY(vector_swi) - save_user_regs - zero_fp - get_scno - - enable_irqs ip - - str r4, [sp, #-S_OFF]! @ push fifth arg - - get_thread_info tsk - ldr ip, [tsk, #TI_FLAGS] @ check for syscall tracing - bic scno, scno, #0xff000000 @ mask off SWI op-code - eor scno, scno, #OS_NUMBER << 20 @ check OS number - adr tbl, sys_call_table @ load syscall table pointer - tst ip, #_TIF_SYSCALL_TRACE @ are we tracing syscalls? - bne __sys_trace - - adral lr, ret_fast_syscall @ set return address - orral lr, lr, #PSR_I_BIT | MODE_SVC26 @ Force SVC mode on return - cmp scno, #NR_syscalls @ check upper syscall limit - ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine - - add r1, sp, #S_OFF -2: mov why, #0 @ no longer a real syscall - cmp scno, #ARMSWI_OFFSET - eor r0, scno, #OS_NUMBER << 20 @ put OS number back - bcs arm_syscall - b sys_ni_syscall @ not private func - - /* - * This is the really slow path. We're going to be doing - * context switches, and waiting for our parent to respond. - */ -__sys_trace: - add r1, sp, #S_OFF - mov r0, #0 @ trace entry [IP = 0] - bl syscall_trace - - adral lr, __sys_trace_return @ set return address - orral lr, lr, #PSR_I_BIT | MODE_SVC26 @ Force SVC mode on return - add r1, sp, #S_R0 + S_OFF @ pointer to regs - cmp scno, #NR_syscalls @ check upper syscall limit - ldmccia r1, {r0 - r3} @ have to reload r0 - r3 - ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine - b 2b - -__sys_trace_return: - str r0, [sp, #S_R0 + S_OFF]! @ save returned r0 - mov r1, sp - mov r0, #1 @ trace exit [IP = 1] - bl syscall_trace - b ret_slow_syscall - - .align 5 - - .type sys_call_table, #object -ENTRY(sys_call_table) -#include "calls.S" - -/*============================================================================ - * Special system call wrappers - */ -@ r0 = syscall number -@ r5 = syscall table - .type sys_syscall, #function -sys_syscall: - eor scno, r0, #OS_NUMBER << 20 - cmp scno, #NR_syscalls @ check range - stmleia sp, {r5, r6} @ shuffle args - movle r0, r1 - movle r1, r2 - movle r2, r3 - movle r3, r4 - ldrle pc, [tbl, scno, lsl #2] - b sys_ni_syscall - -sys_fork_wrapper: - add r0, sp, #S_OFF - b sys_fork - -sys_vfork_wrapper: - add r0, sp, #S_OFF - b sys_vfork - -sys_execve_wrapper: - add r3, sp, #S_OFF - b sys_execve - -sys_clone_wapper: - add r2, sp, #S_OFF - b sys_clone - -sys_sigsuspend_wrapper: - add r3, sp, #S_OFF - b sys_sigsuspend - -sys_rt_sigsuspend_wrapper: - add r2, sp, #S_OFF - b sys_rt_sigsuspend - -sys_sigreturn_wrapper: - add r0, sp, #S_OFF - b sys_sigreturn - -sys_rt_sigreturn_wrapper: - add r0, sp, #S_OFF - b sys_rt_sigreturn - -sys_sigaltstack_wrapper: - ldr r2, [sp, #S_OFF + S_SP] - b do_sigaltstack - -/* - * Note: off_4k (r5) is always units of 4K. If we can't do the requested - * offset, we return EINVAL. FIXME - this lost some stuff from arm32 to - * ifdefs. check it out. - */ -sys_mmap2: - tst r5, #((1 << (PAGE_SHIFT - 12)) - 1) - moveq r5, r5, lsr #PAGE_SHIFT - 12 - streq r5, [sp, #4] - beq do_mmap2 - mov r0, #-EINVAL - RETINSTR(mov,pc, lr) - -/* - * Design issues: - * - We have several modes that each vector can be called from, - * each with its own set of registers. On entry to any vector, - * we *must* save the registers used in *that* mode. - * - * - This code must be as fast as possible. - * - * There are a few restrictions on the vectors: - * - the SWI vector cannot be called from *any* non-user mode - * - * - the FP emulator is *never* called from *any* non-user mode undefined - * instruction. - * - */ - - .text - - .macro handle_irq -1: mov r4, #IOC_BASE - ldrb r6, [r4, #0x24] @ get high priority first - adr r5, irq_prio_h - teq r6, #0 - ldreqb r6, [r4, #0x14] @ get low priority - adreq r5, irq_prio_l - - teq r6, #0 @ If an IRQ happened... - ldrneb r0, [r5, r6] @ get IRQ number - movne r1, sp @ get struct pt_regs - adrne lr, 1b @ Set return address to 1b - orrne lr, lr, #PSR_I_BIT | MODE_SVC26 @ (and force SVC mode) - bne asm_do_IRQ @ process IRQ (if asserted) - .endm - - -/* - * Interrupt table (incorporates priority) - */ - .macro irq_prio_table -irq_prio_l: .byte 0, 0, 1, 0, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3 - .byte 4, 0, 1, 0, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3 - .byte 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 - .byte 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 - .byte 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3 - .byte 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3 - .byte 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 - .byte 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 - .byte 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7 -irq_prio_h: .byte 0, 8, 9, 8,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 12, 8, 9, 8,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 14,14,14,14,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 14,14,14,14,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 15,15,15,15,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 15,15,15,15,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 15,15,15,15,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 15,15,15,15,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .byte 13,13,13,13,10,10,10,10,11,11,11,11,10,10,10,10 - .endm - -#if 1 -/* - * Uncomment these if you wish to get more debugging into about data aborts. - * FIXME - I bet we can find a way to encode these and keep performance. - */ -#define FAULT_CODE_LDRSTRPOST 0x80 -#define FAULT_CODE_LDRSTRPRE 0x40 -#define FAULT_CODE_LDRSTRREG 0x20 -#define FAULT_CODE_LDMSTM 0x10 -#define FAULT_CODE_LDCSTC 0x08 -#endif -#define FAULT_CODE_PREFETCH 0x04 -#define FAULT_CODE_WRITE 0x02 -#define FAULT_CODE_FORCECOW 0x01 - -/*============================================================================= - * Undefined FIQs - *----------------------------------------------------------------------------- - */ -_unexp_fiq: ldr sp, .LCfiq - mov r12, #IOC_BASE - strb r12, [r12, #0x38] @ Disable FIQ register - teqp pc, #PSR_I_BIT | PSR_F_BIT | MODE_SVC26 - mov r0, r0 - stmfd sp!, {r0 - r3, ip, lr} - adr r0, Lfiqmsg - bl printk - ldmfd sp!, {r0 - r3, ip, lr} - teqp pc, #PSR_I_BIT | PSR_F_BIT | MODE_FIQ26 - mov r0, r0 - movs pc, lr - -Lfiqmsg: .ascii "*** Unexpected FIQ\n\0" - .align - -.LCfiq: .word __temp_fiq -.LCirq: .word __temp_irq - -/*============================================================================= - * Undefined instruction handler - *----------------------------------------------------------------------------- - * Handles floating point instructions - */ -vector_undefinstr: - tst lr, #MODE_SVC26 @ did we come from a non-user mode? - bne __und_svc @ yes - deal with it. -/* Otherwise, fall through for the user-space (common) case. */ - save_user_regs - zero_fp @ zero frame pointer - teqp pc, #PSR_I_BIT | MODE_SVC26 @ disable IRQs -.Lbug_undef: - ldr r4, .LC2 - ldr pc, [r4] @ Call FP module entry point -/* FIXME - should we trap for a null pointer here? */ - -/* The SVC mode case */ -__und_svc: save_svc_regs @ Non-user mode - mask_pc r0, lr - and r2, lr, #3 - sub r0, r0, #4 - mov r1, sp - bl do_undefinstr - restore_svc_regs - -/* We get here if the FP emulator doesnt handle the undef instr. - * If the insn WAS handled, the emulator jumps to ret_from_exception by itself/ - */ - .globl fpundefinstr -fpundefinstr: - mov r0, lr - mov r1, sp - teqp pc, #MODE_SVC26 - bl do_undefinstr - b ret_from_exception @ Normal FP exit - -#if defined CONFIG_FPE_NWFPE || defined CONFIG_FPE_FASTFPE - /* The FPE is always present */ - .equ fpe_not_present, 0 -#else -/* We get here if an undefined instruction happens and the floating - * point emulator is not present. If the offending instruction was - * a WFS, we just perform a normal return as if we had emulated the - * operation. This is a hack to allow some basic userland binaries - * to run so that the emulator module proper can be loaded. --philb - * FIXME - probably a broken useless hack... - */ -fpe_not_present: - adr r10, wfs_mask_data - ldmia r10, {r4, r5, r6, r7, r8} - ldr r10, [sp, #S_PC] @ Load PC - sub r10, r10, #4 - mask_pc r10, r10 - ldrt r10, [r10] @ get instruction - and r5, r10, r5 - teq r5, r4 @ Is it WFS? - beq ret_from_exception - and r5, r10, r8 - teq r5, r6 @ Is it LDF/STF on sp or fp? - teqne r5, r7 - bne fpundefinstr - tst r10, #0x00200000 @ Does it have WB - beq ret_from_exception - and r4, r10, #255 @ get offset - and r6, r10, #0x000f0000 - tst r10, #0x00800000 @ +/- - ldr r5, [sp, r6, lsr #14] @ Load reg - rsbeq r4, r4, #0 - add r5, r5, r4, lsl #2 - str r5, [sp, r6, lsr #14] @ Save reg - b ret_from_exception - -wfs_mask_data: .word 0x0e200110 @ WFS/RFS - .word 0x0fef0fff - .word 0x0d0d0100 @ LDF [sp]/STF [sp] - .word 0x0d0b0100 @ LDF [fp]/STF [fp] - .word 0x0f0f0f00 -#endif - -.LC2: .word fp_enter - -/*============================================================================= - * Prefetch abort handler - *----------------------------------------------------------------------------- - */ -#define DEBUG_UNDEF -/* remember: lr = USR pc */ -vector_prefetch: - sub lr, lr, #4 - tst lr, #MODE_SVC26 - bne __pabt_invalid - save_user_regs - teqp pc, #MODE_SVC26 @ Enable IRQs... - mask_pc r0, lr @ Address of abort - mov r1, sp @ Tasks registers - bl do_PrefetchAbort - teq r0, #0 @ If non-zero, we believe this abort.. - bne ret_from_exception -#ifdef DEBUG_UNDEF - adr r0, t - bl printk -#endif - ldr lr, [sp,#S_PC] @ FIXME program to test this on. I think its - b .Lbug_undef @ broken at the moment though!) - -__pabt_invalid: save_svc_regs - mov r0, sp @ Prefetch aborts are definitely *not* - mov r1, #BAD_PREFETCH @ allowed in non-user modes. We cant - and r2, lr, #3 @ recover from this problem. - b bad_mode - -#ifdef DEBUG_UNDEF -t: .ascii "*** undef ***\r\n\0" - .align -#endif - -/*============================================================================= - * Address exception handler - *----------------------------------------------------------------------------- - * These aren't too critical. - * (they're not supposed to happen). - * In order to debug the reason for address exceptions in non-user modes, - * we have to obtain all the registers so that we can see what's going on. - */ - -vector_addrexcptn: - sub lr, lr, #8 - tst lr, #3 - bne Laddrexcptn_not_user - save_user_regs - teq pc, #MODE_SVC26 - mask_pc r0, lr @ Point to instruction - mov r1, sp @ Point to registers - mov r2, #0x400 - mov lr, pc - bl do_excpt - b ret_from_exception - -Laddrexcptn_not_user: - save_svc_regs - and r2, lr, #3 - teq r2, #3 - bne Laddrexcptn_illegal_mode - teqp pc, #MODE_SVC26 - mask_pc r0, lr - mov r1, sp - orr r2, r2, #0x400 - bl do_excpt - ldmia sp, {r0 - lr} @ I cant remember the reason I changed this... - add sp, sp, #15*4 - movs pc, lr - -Laddrexcptn_illegal_mode: - mov r0, sp - str lr, [sp, #-4]! - orr r1, r2, #PSR_I_BIT | PSR_F_BIT - teqp r1, #0 @ change into mode (wont be user mode) - mov r0, r0 - mov r1, r8 @ Any register from r8 - r14 can be banked - mov r2, r9 - mov r3, r10 - mov r4, r11 - mov r5, r12 - mov r6, r13 - mov r7, r14 - teqp pc, #PSR_F_BIT | MODE_SVC26 @ back to svc - mov r0, r0 - stmfd sp!, {r1-r7} - ldmia r0, {r0-r7} - stmfd sp!, {r0-r7} - mov r0, sp - mov r1, #BAD_ADDREXCPTN - b bad_mode - -/*============================================================================= - * Interrupt (IRQ) handler - *----------------------------------------------------------------------------- - * Note: if the IRQ was taken whilst in user mode, then *no* kernel routine - * is running, so do not have to save svc lr. - * - * Entered in IRQ mode. - */ - -vector_IRQ: ldr sp, .LCirq @ Setup some temporary stack - sub lr, lr, #4 - str lr, [sp] @ push return address - - tst lr, #3 - bne __irq_non_usr - -__irq_usr: teqp pc, #PSR_I_BIT | MODE_SVC26 @ Enter SVC mode - mov r0, r0 - - ldr lr, .LCirq - ldr lr, [lr] @ Restore lr for jump back to USR - - save_user_regs - - handle_irq - - mov why, #0 - get_thread_info tsk - b ret_to_user - -@ Place the IRQ priority table here so that the handle_irq macros above -@ and below here can access it. - - irq_prio_table - -__irq_non_usr: teqp pc, #PSR_I_BIT | MODE_SVC26 @ Enter SVC mode - mov r0, r0 - - save_svc_regs_irq - - and r2, lr, #3 - teq r2, #3 - bne __irq_invalid @ IRQ not from SVC mode - - handle_irq - - restore_svc_regs - -__irq_invalid: mov r0, sp - mov r1, #BAD_IRQ - b bad_mode - -/*============================================================================= - * Data abort handler code - *----------------------------------------------------------------------------- - * - * This handles both exceptions from user and SVC modes, computes the address - * range of the problem, and does any correction that is required. It then - * calls the kernel data abort routine. - * - * This is where I wish that the ARM would tell you which address aborted. - */ - -vector_data: sub lr, lr, #8 @ Correct lr - tst lr, #3 - bne Ldata_not_user - save_user_regs - teqp pc, #MODE_SVC26 - mask_pc r0, lr - bl Ldata_do - b ret_from_exception - -Ldata_not_user: - save_svc_regs - and r2, lr, #3 - teq r2, #3 - bne Ldata_illegal_mode - tst lr, #PSR_I_BIT - teqeqp pc, #MODE_SVC26 - mask_pc r0, lr - bl Ldata_do - restore_svc_regs - -Ldata_illegal_mode: - mov r0, sp - mov r1, #BAD_DATA - b bad_mode - -Ldata_do: mov r3, sp - ldr r4, [r0] @ Get instruction - mov r2, #0 - tst r4, #1 << 20 @ Check to see if it is a write instruction - orreq r2, r2, #FAULT_CODE_WRITE @ Indicate write instruction - mov r1, r4, lsr #22 @ Now branch to the relevent processing routine - and r1, r1, #15 << 2 - add pc, pc, r1 - movs pc, lr - b Ldata_unknown - b Ldata_unknown - b Ldata_unknown - b Ldata_unknown - b Ldata_ldrstr_post @ ldr rd, [rn], #m - b Ldata_ldrstr_numindex @ ldr rd, [rn, #m] @ RegVal - b Ldata_ldrstr_post @ ldr rd, [rn], rm - b Ldata_ldrstr_regindex @ ldr rd, [rn, rm] - b Ldata_ldmstm @ ldm*a rn, <rlist> - b Ldata_ldmstm @ ldm*b rn, <rlist> - b Ldata_unknown - b Ldata_unknown - b Ldata_ldrstr_post @ ldc rd, [rn], #m @ Same as ldr rd, [rn], #m - b Ldata_ldcstc_pre @ ldc rd, [rn, #m] - b Ldata_unknown -Ldata_unknown: @ Part of jumptable - mov r0, r1 - mov r1, r4 - mov r2, r3 - b baddataabort - -Ldata_ldrstr_post: - mov r0, r4, lsr #14 @ Get Rn - and r0, r0, #15 << 2 @ Mask out reg. - teq r0, #15 << 2 - ldr r0, [r3, r0] @ Get register - biceq r0, r0, #PCMASK - mov r1, r0 -#ifdef FAULT_CODE_LDRSTRPOST - orr r2, r2, #FAULT_CODE_LDRSTRPOST -#endif - b do_DataAbort - -Ldata_ldrstr_numindex: - mov r0, r4, lsr #14 @ Get Rn - and r0, r0, #15 << 2 @ Mask out reg. - teq r0, #15 << 2 - ldr r0, [r3, r0] @ Get register - mov r1, r4, lsl #20 - biceq r0, r0, #PCMASK - tst r4, #1 << 23 - addne r0, r0, r1, lsr #20 - subeq r0, r0, r1, lsr #20 - mov r1, r0 -#ifdef FAULT_CODE_LDRSTRPRE - orr r2, r2, #FAULT_CODE_LDRSTRPRE -#endif - b do_DataAbort - -Ldata_ldrstr_regindex: - mov r0, r4, lsr #14 @ Get Rn - and r0, r0, #15 << 2 @ Mask out reg. - teq r0, #15 << 2 - ldr r0, [r3, r0] @ Get register - and r7, r4, #15 - biceq r0, r0, #PCMASK - teq r7, #15 @ Check for PC - ldr r7, [r3, r7, lsl #2] @ Get Rm - and r8, r4, #0x60 @ Get shift types - biceq r7, r7, #PCMASK - mov r9, r4, lsr #7 @ Get shift amount - and r9, r9, #31 - teq r8, #0 - moveq r7, r7, lsl r9 - teq r8, #0x20 @ LSR shift - moveq r7, r7, lsr r9 - teq r8, #0x40 @ ASR shift - moveq r7, r7, asr r9 - teq r8, #0x60 @ ROR shift - moveq r7, r7, ror r9 - tst r4, #1 << 23 - addne r0, r0, r7 - subeq r0, r0, r7 @ Apply correction - mov r1, r0 -#ifdef FAULT_CODE_LDRSTRREG - orr r2, r2, #FAULT_CODE_LDRSTRREG -#endif - b do_DataAbort - -Ldata_ldmstm: - mov r7, #0x11 - orr r7, r7, r7, lsl #8 - and r0, r4, r7 - and r1, r4, r7, lsl #1 - add r0, r0, r1, lsr #1 - and r1, r4, r7, lsl #2 - add r0, r0, r1, lsr #2 - and r1, r4, r7, lsl #3 - add r0, r0, r1, lsr #3 - add r0, r0, r0, lsr #8 - add r0, r0, r0, lsr #4 - and r7, r0, #15 @ r7 = no. of registers to transfer. - mov r5, r4, lsr #14 @ Get Rn - and r5, r5, #15 << 2 - ldr r0, [r3, r5] @ Get reg - eor r6, r4, r4, lsl #2 - tst r6, #1 << 23 @ Check inc/dec ^ writeback - rsbeq r7, r7, #0 - add r7, r0, r7, lsl #2 @ Do correction (signed) - subne r1, r7, #1 - subeq r1, r0, #1 - moveq r0, r7 - tst r4, #1 << 21 @ Check writeback - strne r7, [r3, r5] - eor r6, r4, r4, lsl #1 - tst r6, #1 << 24 @ Check Pre/Post ^ inc/dec - addeq r0, r0, #4 - addeq r1, r1, #4 - teq r5, #15*4 @ CHECK FOR PC - biceq r1, r1, #PCMASK - biceq r0, r0, #PCMASK -#ifdef FAULT_CODE_LDMSTM - orr r2, r2, #FAULT_CODE_LDMSTM -#endif - b do_DataAbort - -Ldata_ldcstc_pre: - mov r0, r4, lsr #14 @ Get Rn - and r0, r0, #15 << 2 @ Mask out reg. - teq r0, #15 << 2 - ldr r0, [r3, r0] @ Get register - mov r1, r4, lsl #24 @ Get offset - biceq r0, r0, #PCMASK - tst r4, #1 << 23 - addne r0, r0, r1, lsr #24 - subeq r0, r0, r1, lsr #24 - mov r1, r0 -#ifdef FAULT_CODE_LDCSTC - orr r2, r2, #FAULT_CODE_LDCSTC -#endif - b do_DataAbort - - -/* - * This is the return code to user mode for abort handlers - */ -ENTRY(ret_from_exception) - get_thread_info tsk - mov why, #0 - b ret_to_user - - .data -ENTRY(fp_enter) - .word fpe_not_present - .text -/* - * Register switch for older 26-bit only ARMs - */ -ENTRY(__switch_to) - add r0, r0, #TI_CPU_SAVE - stmia r0, {r4 - sl, fp, sp, lr} - add r1, r1, #TI_CPU_SAVE - ldmia r1, {r4 - sl, fp, sp, pc}^ - -/* - *============================================================================= - * Low-level interface code - *----------------------------------------------------------------------------- - * Trap initialisation - *----------------------------------------------------------------------------- - * - * Note - FIQ code has changed. The default is a couple of words in 0x1c, 0x20 - * that call _unexp_fiq. Nowever, we now copy the FIQ routine to 0x1c (removes - * some excess cycles). - * - * What we need to put into 0-0x1c are branches to branch to the kernel. - */ - - .section ".init.text",#alloc,#execinstr - -.Ljump_addresses: - swi SYS_ERROR0 - .word vector_undefinstr - 12 - .word vector_swi - 16 - .word vector_prefetch - 20 - .word vector_data - 24 - .word vector_addrexcptn - 28 - .word vector_IRQ - 32 - .word _unexp_fiq - 36 - b . + 8 -/* - * initialise the trap system - */ -ENTRY(__trap_init) - stmfd sp!, {r4 - r7, lr} - adr r1, .Ljump_addresses - ldmia r1, {r1 - r7, ip, lr} - orr r2, lr, r2, lsr #2 - orr r3, lr, r3, lsr #2 - orr r4, lr, r4, lsr #2 - orr r5, lr, r5, lsr #2 - orr r6, lr, r6, lsr #2 - orr r7, lr, r7, lsr #2 - orr ip, lr, ip, lsr #2 - mov r0, #0 - stmia r0, {r1 - r7, ip} - ldmfd sp!, {r4 - r7, pc}^ - - .bss -__temp_irq: .space 4 @ saved lr_irq -__temp_fiq: .space 128 diff --git a/arch/arm26/kernel/fiq.c b/arch/arm26/kernel/fiq.c deleted file mode 100644 index c4776c96be6..00000000000 --- a/arch/arm26/kernel/fiq.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * linux/arch/arm26/kernel/fiq.c - * - * Copyright (C) 1998 Russell King - * Copyright (C) 1998, 1999 Phil Blundell - * Copyright (C) 2003 Ian Molton - * - * FIQ support written by Philip Blundell <philb@gnu.org>, 1998. - * - * FIQ support re-written by Russell King to be more generic - * - * We now properly support a method by which the FIQ handlers can - * be stacked onto the vector. We still do not support sharing - * the FIQ vector itself. - * - * Operation is as follows: - * 1. Owner A claims FIQ: - * - default_fiq relinquishes control. - * 2. Owner A: - * - inserts code. - * - sets any registers, - * - enables FIQ. - * 3. Owner B claims FIQ: - * - if owner A has a relinquish function. - * - disable FIQs. - * - saves any registers. - * - returns zero. - * 4. Owner B: - * - inserts code. - * - sets any registers, - * - enables FIQ. - * 5. Owner B releases FIQ: - * - Owner A is asked to reacquire FIQ: - * - inserts code. - * - restores saved registers. - * - enables FIQ. - * 6. Goto 3 - */ -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/mman.h> -#include <linux/init.h> -#include <linux/seq_file.h> - -#include <asm/fiq.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/pgalloc.h> -#include <asm/system.h> -#include <asm/uaccess.h> - -#define FIQ_VECTOR (vectors_base() + 0x1c) - -static unsigned long no_fiq_insn; - -#define unprotect_page_0() -#define protect_page_0() - -/* Default reacquire function - * - we always relinquish FIQ control - * - we always reacquire FIQ control - */ -static int fiq_def_op(void *ref, int relinquish) -{ - if (!relinquish) { - unprotect_page_0(); - *(unsigned long *)FIQ_VECTOR = no_fiq_insn; - protect_page_0(); - } - - return 0; -} - -static struct fiq_handler default_owner = { - .name = "default", - .fiq_op = fiq_def_op, -}; - -static struct fiq_handler *current_fiq = &default_owner; - -int show_fiq_list(struct seq_file *p, void *v) -{ - if (current_fiq != &default_owner) - seq_printf(p, "FIQ: %s\n", current_fiq->name); - - return 0; -} - -void set_fiq_handler(void *start, unsigned int length) -{ - unprotect_page_0(); - - memcpy((void *)FIQ_VECTOR, start, length); - - protect_page_0(); -} - -/* - * Taking an interrupt in FIQ mode is death, so both these functions - * disable irqs for the duration. - */ -void set_fiq_regs(struct pt_regs *regs) -{ - register unsigned long tmp, tmp2; - __asm__ volatile ( - "mov %0, pc \n" - "bic %1, %0, #0x3 \n" - "orr %1, %1, %3 \n" - "teqp %1, #0 @ select FIQ mode \n" - "mov r0, r0 \n" - "ldmia %2, {r8 - r14} \n" - "teqp %0, #0 @ return to SVC mode \n" - "mov r0, r0 " - : "=&r" (tmp), "=&r" (tmp2) - : "r" (®s->ARM_r8), "I" (PSR_I_BIT | PSR_F_BIT | MODE_FIQ26) - /* These registers aren't modified by the above code in a way - visible to the compiler, but we mark them as clobbers anyway - so that GCC won't put any of the input or output operands in - them. */ - : "r8", "r9", "r10", "r11", "r12", "r13", "r14"); -} - -void get_fiq_regs(struct pt_regs *regs) -{ - register unsigned long tmp, tmp2; - __asm__ volatile ( - "mov %0, pc \n" - "bic %1, %0, #0x3 \n" - "orr %1, %1, %3 \n" - "teqp %1, #0 @ select FIQ mode \n" - "mov r0, r0 \n" - "stmia %2, {r8 - r14} \n" - "teqp %0, #0 @ return to SVC mode \n" - "mov r0, r0 " - : "=&r" (tmp), "=&r" (tmp2) - : "r" (®s->ARM_r8), "I" (PSR_I_BIT | PSR_F_BIT | MODE_FIQ26) - /* These registers aren't modified by the above code in a way - visible to the compiler, but we mark them as clobbers anyway - so that GCC won't put any of the input or output operands in - them. */ - : "r8", "r9", "r10", "r11", "r12", "r13", "r14"); -} - -int claim_fiq(struct fiq_handler *f) -{ - int ret = 0; - - if (current_fiq) { - ret = -EBUSY; - - if (current_fiq->fiq_op != NULL) - ret = current_fiq->fiq_op(current_fiq->dev_id, 1); - } - - if (!ret) { - f->next = current_fiq; - current_fiq = f; - } - - return ret; -} - -void release_fiq(struct fiq_handler *f) -{ - if (current_fiq != f) { - printk(KERN_ERR "%s FIQ trying to release %s FIQ\n", - f->name, current_fiq->name); -#ifdef CONFIG_DEBUG_ERRORS - __backtrace(); -#endif - return; - } - - do - current_fiq = current_fiq->next; - while (current_fiq->fiq_op(current_fiq->dev_id, 0)); -} - -void enable_fiq(int fiq) -{ - enable_irq(fiq + FIQ_START); -} - -void disable_fiq(int fiq) -{ - disable_irq(fiq + FIQ_START); -} - -EXPORT_SYMBOL(set_fiq_handler); -EXPORT_SYMBOL(set_fiq_regs); -EXPORT_SYMBOL(get_fiq_regs); -EXPORT_SYMBOL(claim_fiq); -EXPORT_SYMBOL(release_fiq); -EXPORT_SYMBOL(enable_fiq); -EXPORT_SYMBOL(disable_fiq); - -void __init init_FIQ(void) -{ - no_fiq_insn = *(unsigned long *)FIQ_VECTOR; - set_fs(get_fs()); -} diff --git a/arch/arm26/kernel/head.S b/arch/arm26/kernel/head.S deleted file mode 100644 index 93575e0e58f..00000000000 --- a/arch/arm26/kernel/head.S +++ /dev/null @@ -1,112 +0,0 @@ -/* - * linux/arch/arm26/kernel/head.S - * - * Copyright (C) 1994-2000 Russell King - * Copyright (C) 2003 Ian Molton - * - * 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. - * - * 26-bit kernel startup code - */ -#include <linux/linkage.h> -#include <asm/mach-types.h> - - .globl swapper_pg_dir - .equ swapper_pg_dir, 0x0207d000 - -/* - * Entry point. - */ - .section ".init.text",#alloc,#execinstr -ENTRY(stext) - -__entry: - cmp pc, #0x02000000 - ldrlt pc, LC0 @ if 0x01800000, call at 0x02080000 - teq r0, #0 @ Check for old calling method - blne oldparams @ Move page if old - - adr r0, LC0 - ldmib r0, {r2-r5, sp} @ Setup stack (and fetch other values) - - mov r0, #0 @ Clear BSS -1: cmp r2, r3 - strcc r0, [r2], #4 - bcc 1b - - bl detect_proc_type - str r0, [r4] - bl detect_arch_type - str r0, [r5] - -#ifdef CONFIG_XIP_KERNEL - ldr r3, ETEXT @ data section copy - ldr r4, SDATA - ldr r5, EDATA -1: - ldr r6, [r3], #4 - str r6, [r4], #4 - cmp r4, r5 - blt 1b -#endif - mov fp, #0 - b start_kernel - -LC0: .word _stext - .word __bss_start @ r2 - .word _end @ r3 - .word processor_id @ r4 - .word __machine_arch_type @ r5 - .word init_thread_union+8192 @ sp -#ifdef CONFIG_XIP_KERNEL -ETEXT: .word _endtext -SDATA: .word _sdata -EDATA: .word __bss_start -#endif - -arm2_id: .long 0x41560200 @ ARM2 and 250 dont have a CPUID -arm250_id: .long 0x41560250 @ So we create some after probing for them - .align - -oldparams: mov r4, #0x02000000 - add r3, r4, #0x00080000 - add r4, r4, #0x0007c000 -1: ldmia r0!, {r5 - r12} - stmia r4!, {r5 - r12} - cmp r4, r3 - blt 1b - mov pc, lr - -/* - * We need some way to automatically detect the difference between - * these two machines. Unfortunately, it is not possible to detect - * the presence of the SuperIO chip, because that will hang the old - * Archimedes machines solid. - */ -/* DAG: Outdated, these have been combined !!!!!!! */ -detect_arch_type: -#if defined(CONFIG_ARCH_ARC) - mov r0, #MACH_TYPE_ARCHIMEDES -#elif defined(CONFIG_ARCH_A5K) - mov r0, #MACH_TYPE_A5K -#endif - mov pc, lr - -detect_proc_type: - mov ip, lr - mov r2, #0xea000000 @ Point undef instr to continuation - adr r0, continue - 12 - orr r0, r2, r0, lsr #2 - mov r1, #0 - str r0, [r1, #4] - ldr r0, arm2_id - swp r2, r2, [r1] @ check for swp (ARM2 cant) - ldr r0, arm250_id - mrc 15, 0, r3, c0, c0 @ check for CP#15 (ARM250 cant) - mov r0, r3 -continue: mov r2, #0xeb000000 @ Make undef vector loop - sub r2, r2, #2 - str r2, [r1, #4] - mov pc, ip diff --git a/arch/arm26/kernel/init_task.c b/arch/arm26/kernel/init_task.c deleted file mode 100644 index 4191565b889..00000000000 --- a/arch/arm26/kernel/init_task.c +++ /dev/null @@ -1,49 +0,0 @@ -/* - * linux/arch/arm26/kernel/init_task.c - * - * Copyright (C) 2003 Ian Molton - * - */ -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/fs.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> - -#include <asm/uaccess.h> -#include <asm/pgtable.h> - -static struct fs_struct init_fs = INIT_FS; -static struct files_struct init_files = INIT_FILES; -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -struct mm_struct init_mm = INIT_MM(init_mm); - -EXPORT_SYMBOL(init_mm); - -/* - * Initial thread structure. - * - * We need to make sure that this is 8192-byte aligned due to the - * way process stacks are handled. This is done by making sure - * the linker maps this in the .text segment right after head.S, - * and making the linker scripts ensure the proper alignment. - * - * FIXME - should this be 32K alignment on arm26? - * - * The things we do for performance... - */ -union thread_union init_thread_union - __attribute__((__section__(".init.task"))) = - { INIT_THREAD_INFO(init_task) }; - -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); - -EXPORT_SYMBOL(init_task); diff --git a/arch/arm26/kernel/irq.c b/arch/arm26/kernel/irq.c deleted file mode 100644 index 2ffe695b062..00000000000 --- a/arch/arm26/kernel/irq.c +++ /dev/null @@ -1,722 +0,0 @@ -/* - * linux/arch/arm/kernel/irq.c - * - * Copyright (C) 1992 Linus Torvalds - * Modifications for ARM processor Copyright (C) 1995-2000 Russell King. - * 'Borrowed' for ARM26 and (C) 2003 Ian Molton. - * - * 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. - * - * This file contains the code used by various IRQ handling routines: - * asking for different IRQ's should be done through these routines - * instead of just grabbing them. Thus setups with different IRQ numbers - * shouldn't result in any weird surprises, and installing new handlers - * should be easier. - * - * IRQ's are in fact implemented a bit like signal handlers for the kernel. - * Naturally it's not a 1:1 relation, but there are similarities. - */ -#include <linux/module.h> -#include <linux/ptrace.h> -#include <linux/kernel_stat.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/ioport.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/random.h> -#include <linux/smp.h> -#include <linux/init.h> -#include <linux/seq_file.h> -#include <linux/errno.h> - -#include <asm/irq.h> -#include <asm/system.h> -#include <asm/irqchip.h> - -//FIXME - this ought to be in a header IMO -void __init arc_init_irq(void); - -/* - * Maximum IRQ count. Currently, this is arbitary. However, it should - * not be set too low to prevent false triggering. Conversely, if it - * is set too high, then you could miss a stuck IRQ. - * - * FIXME Maybe we ought to set a timer and re-enable the IRQ at a later time? - */ -#define MAX_IRQ_CNT 100000 - -static volatile unsigned long irq_err_count; -static DEFINE_SPINLOCK(irq_controller_lock); - -struct irqdesc irq_desc[NR_IRQS]; - -/* - * Dummy mask/unmask handler - */ -void dummy_mask_unmask_irq(unsigned int irq) -{ -} - -void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) -{ - irq_err_count += 1; - printk(KERN_ERR "IRQ: spurious interrupt %d\n", irq); -} - -static struct irqchip bad_chip = { - .ack = dummy_mask_unmask_irq, - .mask = dummy_mask_unmask_irq, - .unmask = dummy_mask_unmask_irq, -}; - -static struct irqdesc bad_irq_desc = { - .chip = &bad_chip, - .handle = do_bad_IRQ, - .depth = 1, -}; - -/** - * disable_irq - disable an irq and wait for completion - * @irq: Interrupt to disable - * - * Disable the selected interrupt line. We do this lazily. - * - * This function may be called from IRQ context. - */ -void disable_irq(unsigned int irq) -{ - struct irqdesc *desc = irq_desc + irq; - unsigned long flags; - spin_lock_irqsave(&irq_controller_lock, flags); - if (!desc->depth++) - desc->enabled = 0; - spin_unlock_irqrestore(&irq_controller_lock, flags); -} -EXPORT_SYMBOL(disable_irq); - -void disable_irq_nosync(unsigned int irq) __attribute__((alias("disable_irq"))); - -EXPORT_SYMBOL(disable_irq_nosync); - -/** - * enable_irq - enable interrupt handling on an irq - * @irq: Interrupt to enable - * - * Re-enables the processing of interrupts on this IRQ line. - * Note that this may call the interrupt handler, so you may - * get unexpected results if you hold IRQs disabled. - * - * This function may be called from IRQ context. - */ -void enable_irq(unsigned int irq) -{ - struct irqdesc *desc = irq_desc + irq; - unsigned long flags; - int pending = 0; - - spin_lock_irqsave(&irq_controller_lock, flags); - if (unlikely(!desc->depth)) { - printk("enable_irq(%u) unbalanced from %p\n", irq, - __builtin_return_address(0)); //FIXME bum addresses reported - why? - } else if (!--desc->depth) { - desc->probing = 0; - desc->enabled = 1; - desc->chip->unmask(irq); - pending = desc->pending; - desc->pending = 0; - /* - * If the interrupt was waiting to be processed, - * retrigger it. - */ - if (pending) - desc->chip->rerun(irq); - } - spin_unlock_irqrestore(&irq_controller_lock, flags); -} -EXPORT_SYMBOL(enable_irq); - -int show_interrupts(struct seq_file *p, void *v) -{ - int i = *(loff_t *) v; - struct irqaction * action; - - if (i < NR_IRQS) { - action = irq_desc[i].action; - if (!action) - goto out; - seq_printf(p, "%3d: %10u ", i, kstat_irqs(i)); - seq_printf(p, " %s", action->name); - for (action = action->next; action; action = action->next) { - seq_printf(p, ", %s", action->name); - } - seq_putc(p, '\n'); - } else if (i == NR_IRQS) { - show_fiq_list(p, v); - seq_printf(p, "Err: %10lu\n", irq_err_count); - } -out: - return 0; -} - -/* - * IRQ lock detection. - * - * Hopefully, this should get us out of a few locked situations. - * However, it may take a while for this to happen, since we need - * a large number if IRQs to appear in the same jiffie with the - * same instruction pointer (or within 2 instructions). - */ -static int check_irq_lock(struct irqdesc *desc, int irq, struct pt_regs *regs) -{ - unsigned long instr_ptr = instruction_pointer(regs); - - if (desc->lck_jif == jiffies && - desc->lck_pc >= instr_ptr && desc->lck_pc < instr_ptr + 8) { - desc->lck_cnt += 1; - - if (desc->lck_cnt > MAX_IRQ_CNT) { - printk(KERN_ERR "IRQ LOCK: IRQ%d is locking the system, disabled\n", irq); - return 1; - } - } else { - desc->lck_cnt = 0; - desc->lck_pc = instruction_pointer(regs); - desc->lck_jif = jiffies; - } - return 0; -} - -static void -__do_irq(unsigned int irq, struct irqaction *action, struct pt_regs *regs) -{ - unsigned int status; - int ret; - - spin_unlock(&irq_controller_lock); - if (!(action->flags & IRQF_DISABLED)) - local_irq_enable(); - - status = 0; - do { - ret = action->handler(irq, action->dev_id, regs); - if (ret == IRQ_HANDLED) - status |= action->flags; - action = action->next; - } while (action); - - if (status & IRQF_SAMPLE_RANDOM) - add_interrupt_randomness(irq); - - spin_lock_irq(&irq_controller_lock); -} - -/* - * This is for software-decoded IRQs. The caller is expected to - * handle the ack, clear, mask and unmask issues. - */ -void -do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) -{ - struct irqaction *action; - const int cpu = smp_processor_id(); - - desc->triggered = 1; - - kstat_cpu(cpu).irqs[irq]++; - - action = desc->action; - if (action) - __do_irq(irq, desc->action, regs); -} - -/* - * Most edge-triggered IRQ implementations seem to take a broken - * approach to this. Hence the complexity. - */ -void -do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) -{ - const int cpu = smp_processor_id(); - - desc->triggered = 1; - - /* - * If we're currently running this IRQ, or its disabled, - * we shouldn't process the IRQ. Instead, turn on the - * hardware masks. - */ - if (unlikely(desc->running || !desc->enabled)) - goto running; - - /* - * Acknowledge and clear the IRQ, but don't mask it. - */ - desc->chip->ack(irq); - - /* - * Mark the IRQ currently in progress. - */ - desc->running = 1; - - kstat_cpu(cpu).irqs[irq]++; - - do { - struct irqaction *action; - - action = desc->action; - if (!action) - break; - - if (desc->pending && desc->enabled) { - desc->pending = 0; - desc->chip->unmask(irq); - } - - __do_irq(irq, action, regs); - } while (desc->pending); - - desc->running = 0; - - /* - * If we were disabled or freed, shut down the handler. - */ - if (likely(desc->action && !check_irq_lock(desc, irq, regs))) - return; - - running: - /* - * We got another IRQ while this one was masked or - * currently running. Delay it. - */ - desc->pending = 1; - desc->chip->mask(irq); - desc->chip->ack(irq); -} - -/* - * Level-based IRQ handler. Nice and simple. - */ -void -do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs) -{ - struct irqaction *action; - const int cpu = smp_processor_id(); - - desc->triggered = 1; - - /* - * Acknowledge, clear _AND_ disable the interrupt. - */ - desc->chip->ack(irq); - - if (likely(desc->enabled)) { - kstat_cpu(cpu).irqs[irq]++; - - /* - * Return with this interrupt masked if no action - */ - action = desc->action; - if (action) { - __do_irq(irq, desc->action, regs); - - if (likely(desc->enabled && - !check_irq_lock(desc, irq, regs))) - desc->chip->unmask(irq); - } - } -} - -/* - * do_IRQ handles all hardware IRQ's. Decoded IRQs should not - * come via this function. Instead, they should provide their - * own 'handler' - */ -asmlinkage void asm_do_IRQ(int irq, struct pt_regs *regs) -{ - struct irqdesc *desc = irq_desc + irq; - - /* - * Some hardware gives randomly wrong interrupts. Rather - * than crashing, do something sensible. - */ - if (irq >= NR_IRQS) - desc = &bad_irq_desc; - - irq_enter(); - spin_lock(&irq_controller_lock); - desc->handle(irq, desc, regs); - spin_unlock(&irq_controller_lock); - irq_exit(); -} - -void __set_irq_handler(unsigned int irq, irq_handler_t handle, int is_chained) -{ - struct irqdesc *desc; - unsigned long flags; - - if (irq >= NR_IRQS) { - printk(KERN_ERR "Trying to install handler for IRQ%d\n", irq); - return; - } - - if (handle == NULL) - handle = do_bad_IRQ; - - desc = irq_desc + irq; - - if (is_chained && desc->chip == &bad_chip) - printk(KERN_WARNING "Trying to install chained handler for IRQ%d\n", irq); - - spin_lock_irqsave(&irq_controller_lock, flags); - if (handle == do_bad_IRQ) { - desc->chip->mask(irq); - desc->chip->ack(irq); - desc->depth = 1; - desc->enabled = 0; - } - desc->handle = handle; - if (handle != do_bad_IRQ && is_chained) { - desc->valid = 0; - desc->probe_ok = 0; - desc->depth = 0; - desc->chip->unmask(irq); - } - spin_unlock_irqrestore(&irq_controller_lock, flags); -} - -void set_irq_chip(unsigned int irq, struct irqchip *chip) -{ - struct irqdesc *desc; - unsigned long flags; - - if (irq >= NR_IRQS) { - printk(KERN_ERR "Trying to install chip for IRQ%d\n", irq); - return; - } - - if (chip == NULL) - chip = &bad_chip; - - desc = irq_desc + irq; - spin_lock_irqsave(&irq_controller_lock, flags); - desc->chip = chip; - spin_unlock_irqrestore(&irq_controller_lock, flags); -} - -int set_irq_type(unsigned int irq, unsigned int type) -{ - struct irqdesc *desc; - unsigned long flags; - int ret = -ENXIO; - - if (irq >= NR_IRQS) { - printk(KERN_ERR "Trying to set irq type for IRQ%d\n", irq); - return -ENODEV; - } - - desc = irq_desc + irq; - if (desc->chip->type) { - spin_lock_irqsave(&irq_controller_lock, flags); - ret = desc->chip->type(irq, type); - spin_unlock_irqrestore(&irq_controller_lock, flags); - } - - return ret; -} - -void set_irq_flags(unsigned int irq, unsigned int iflags) -{ - struct irqdesc *desc; - unsigned long flags; - - if (irq >= NR_IRQS) { - printk(KERN_ERR "Trying to set irq flags for IRQ%d\n", irq); - return; - } - - desc = irq_desc + irq; - spin_lock_irqsave(&irq_controller_lock, flags); - desc->valid = (iflags & IRQF_VALID) != 0; - desc->probe_ok = (iflags & IRQF_PROBE) != 0; - desc->noautoenable = (iflags & IRQF_NOAUTOEN) != 0; - spin_unlock_irqrestore(&irq_controller_lock, flags); -} - -int setup_irq(unsigned int irq, struct irqaction *new) -{ - int shared = 0; - struct irqaction *old, **p; - unsigned long flags; - struct irqdesc *desc; - - /* - * Some drivers like serial.c use request_irq() heavily, - * so we have to be careful not to interfere with a - * running system. - */ - if (new->flags & IRQF_SAMPLE_RANDOM) { - /* - * This function might sleep, we want to call it first, - * outside of the atomic block. - * Yes, this might clear the entropy pool if the wrong - * driver is attempted to be loaded, without actually - * installing a new handler, but is this really a problem, - * only the sysadmin is able to do this. - */ - rand_initialize_irq(irq); - } - - /* - * The following block of code has to be executed atomically - */ - desc = irq_desc + irq; - spin_lock_irqsave(&irq_controller_lock, flags); - p = &desc->action; - if ((old = *p) != NULL) { - /* Can't share interrupts unless both agree to */ - if (!(old->flags & new->flags & IRQF_SHARED)) { - spin_unlock_irqrestore(&irq_controller_lock, flags); - return -EBUSY; - } - - /* add new interrupt at end of irq queue */ - do { - p = &old->next; - old = *p; - } while (old); - shared = 1; - } - - *p = new; - - if (!shared) { - desc->probing = 0; - desc->running = 0; - desc->pending = 0; - desc->depth = 1; - if (!desc->noautoenable) { - desc->depth = 0; - desc->enabled = 1; - desc->chip->unmask(irq); - } - } - - spin_unlock_irqrestore(&irq_controller_lock, flags); - return 0; -} - -/** - * request_irq - allocate an interrupt line - * @irq: Interrupt line to allocate - * @handler: Function to be called when the IRQ occurs - * @irqflags: Interrupt type flags - * @devname: An ascii name for the claiming device - * @dev_id: A cookie passed back to the handler function - * - * This call allocates interrupt resources and enables the - * interrupt line and IRQ handling. From the point this - * call is made your handler function may be invoked. Since - * your handler function must clear any interrupt the board - * raises, you must take care both to initialise your hardware - * and to set up the interrupt handler in the right order. - * - * Dev_id must be globally unique. Normally the address of the - * device data structure is used as the cookie. Since the handler - * receives this value it makes sense to use it. - * - * If your interrupt is shared you must pass a non NULL dev_id - * as this is required when freeing the interrupt. - * - * Flags: - * - * IRQF_SHARED Interrupt is shared - * - * IRQF_DISABLED Disable local interrupts while processing - * - * IRQF_SAMPLE_RANDOM The interrupt can be used for entropy - * - */ - -//FIXME - handler used to return void - whats the significance of the change? -int request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), - unsigned long irq_flags, const char * devname, void *dev_id) -{ - unsigned long retval; - struct irqaction *action; - - if (irq >= NR_IRQS || !irq_desc[irq].valid || !handler || - (irq_flags & IRQF_SHARED && !dev_id)) - return -EINVAL; - - action = kmalloc(sizeof(struct irqaction), GFP_KERNEL); - if (!action) - return -ENOMEM; - - action->handler = handler; - action->flags = irq_flags; - cpus_clear(action->mask); - action->name = devname; - action->next = NULL; - action->dev_id = dev_id; - - retval = setup_irq(irq, action); - - if (retval) - kfree(action); - return retval; -} - -EXPORT_SYMBOL(request_irq); - -/** - * free_irq - free an interrupt - * @irq: Interrupt line to free - * @dev_id: Device identity to free - * - * Remove an interrupt handler. The handler is removed and if the - * interrupt line is no longer in use by any driver it is disabled. - * On a shared IRQ the caller must ensure the interrupt is disabled - * on the card it drives before calling this function. - * - * This function may be called from interrupt context. - */ -void free_irq(unsigned int irq, void *dev_id) -{ - struct irqaction * action, **p; - unsigned long flags; - - if (irq >= NR_IRQS || !irq_desc[irq].valid) { - printk(KERN_ERR "Trying to free IRQ%d\n",irq); -#ifdef CONFIG_DEBUG_ERRORS - __backtrace(); -#endif - return; - } - - spin_lock_irqsave(&irq_controller_lock, flags); - for (p = &irq_desc[irq].action; (action = *p) != NULL; p = &action->next) { - if (action->dev_id != dev_id) - continue; - - /* Found it - now free it */ - *p = action->next; - kfree(action); - goto out; - } - printk(KERN_ERR "Trying to free free IRQ%d\n",irq); -#ifdef CONFIG_DEBUG_ERRORS - __backtrace(); -#endif -out: - spin_unlock_irqrestore(&irq_controller_lock, flags); -} - -EXPORT_SYMBOL(free_irq); - -/* Start the interrupt probing. Unlike other architectures, - * we don't return a mask of interrupts from probe_irq_on, - * but return the number of interrupts enabled for the probe. - * The interrupts which have been enabled for probing is - * instead recorded in the irq_desc structure. - */ -unsigned long probe_irq_on(void) -{ - unsigned int i, irqs = 0; - unsigned long delay; - - /* - * first snaffle up any unassigned but - * probe-able interrupts - */ - spin_lock_irq(&irq_controller_lock); - for (i = 0; i < NR_IRQS; i++) { - if (!irq_desc[i].probe_ok || irq_desc[i].action) - continue; - - irq_desc[i].probing = 1; - irq_desc[i].triggered = 0; - if (irq_desc[i].chip->type) - irq_desc[i].chip->type(i, IRQT_PROBE); - irq_desc[i].chip->unmask(i); - irqs += 1; - } - spin_unlock_irq(&irq_controller_lock); - - /* - * wait for spurious interrupts to mask themselves out again - */ - for (delay = jiffies + HZ/10; time_before(jiffies, delay); ) - /* min 100ms delay */; - - /* - * now filter out any obviously spurious interrupts - */ - spin_lock_irq(&irq_controller_lock); - for (i = 0; i < NR_IRQS; i++) { - if (irq_desc[i].probing && irq_desc[i].triggered) { - irq_desc[i].probing = 0; - irqs -= 1; - } - } - spin_unlock_irq(&irq_controller_lock); - - return irqs; -} - -EXPORT_SYMBOL(probe_irq_on); - -/* - * Possible return values: - * >= 0 - interrupt number - * -1 - no interrupt/many interrupts - */ -int probe_irq_off(unsigned long irqs) -{ - unsigned int i; - int irq_found = NO_IRQ; - - /* - * look at the interrupts, and find exactly one - * that we were probing has been triggered - */ - spin_lock_irq(&irq_controller_lock); - for (i = 0; i < NR_IRQS; i++) { - if (irq_desc[i].probing && - irq_desc[i].triggered) { - if (irq_found != NO_IRQ) { - irq_found = NO_IRQ; - goto out; - } - irq_found = i; - } - } - - if (irq_found == -1) - irq_found = NO_IRQ; -out: - spin_unlock_irq(&irq_controller_lock); - - return irq_found; -} - -EXPORT_SYMBOL(probe_irq_off); - -void __init init_irq_proc(void) -{ -} - -void __init init_IRQ(void) -{ - struct irqdesc *desc; - extern void init_dma(void); - int irq; - - for (irq = 0, desc = irq_desc; irq < NR_IRQS; irq++, desc++) - *desc = bad_irq_desc; - - arc_init_irq(); - init_dma(); -} diff --git a/arch/arm26/kernel/process.c b/arch/arm26/kernel/process.c deleted file mode 100644 index dcd81e62ff4..00000000000 --- a/arch/arm26/kernel/process.c +++ /dev/null @@ -1,392 +0,0 @@ -/* - * linux/arch/arm26/kernel/process.c - * - * Copyright (C) 2003 Ian Molton - adapted for ARM26 - * Copyright (C) 1996-2000 Russell King - Converted to ARM. - * Origional Copyright (C) 1995 Linus Torvalds - * - * 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. - */ -#include <stdarg.h> - -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/slab.h> -#include <linux/user.h> -#include <linux/a.out.h> -#include <linux/delay.h> -#include <linux/reboot.h> -#include <linux/interrupt.h> -#include <linux/init.h> - -#include <asm/system.h> -#include <asm/io.h> -#include <asm/leds.h> -#include <asm/processor.h> -#include <asm/uaccess.h> - -extern const char *processor_modes[]; -extern void setup_mm_for_reboot(char mode); - -static volatile int hlt_counter; - -void disable_hlt(void) -{ - hlt_counter++; -} - -EXPORT_SYMBOL(disable_hlt); - -void enable_hlt(void) -{ - hlt_counter--; -} - -EXPORT_SYMBOL(enable_hlt); - -static int __init nohlt_setup(char *__unused) -{ - hlt_counter = 1; - return 1; -} - -static int __init hlt_setup(char *__unused) -{ - hlt_counter = 0; - return 1; -} - -__setup("nohlt", nohlt_setup); -__setup("hlt", hlt_setup); - -/* - * This is our default idle handler. We need to disable - * interrupts here to ensure we don't miss a wakeup call. - */ -void cpu_idle(void) -{ - /* endless idle loop with no priority at all */ - while (1) { - while (!need_resched()) - cpu_relax(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } -} - -static char reboot_mode = 'h'; - -int __init reboot_setup(char *str) -{ - reboot_mode = str[0]; - return 1; -} - -__setup("reboot=", reboot_setup); - -/* ARM26 cant do these but we still need to define them. */ -void machine_halt(void) -{ -} -void machine_power_off(void) -{ -} - -void machine_restart(char * __unused) -{ - /* - * Clean and disable cache, and turn off interrupts - */ - cpu_proc_fin(); - - /* - * Tell the mm system that we are going to reboot - - * we may need it to insert some 1:1 mappings so that - * soft boot works. - */ - setup_mm_for_reboot(reboot_mode); - - /* - * copy branch instruction to reset location and call it - */ - - *(unsigned long *)0 = *(unsigned long *)0x03800000; - ((void(*)(void))0)(); - - /* - * Whoops - the architecture was unable to reboot. - * Tell the user! Should never happen... - */ - mdelay(1000); - printk("Reboot failed -- System halted\n"); - while (1); -} - -void show_regs(struct pt_regs * regs) -{ - unsigned long flags; - - flags = condition_codes(regs); - - printk("pc : [<%08lx>] lr : [<%08lx>] %s\n" - "sp : %08lx ip : %08lx fp : %08lx\n", - instruction_pointer(regs), - regs->ARM_lr, print_tainted(), regs->ARM_sp, - regs->ARM_ip, regs->ARM_fp); - printk("r10: %08lx r9 : %08lx r8 : %08lx\n", - regs->ARM_r10, regs->ARM_r9, - regs->ARM_r8); - printk("r7 : %08lx r6 : %08lx r5 : %08lx r4 : %08lx\n", - regs->ARM_r7, regs->ARM_r6, - regs->ARM_r5, regs->ARM_r4); - printk("r3 : %08lx r2 : %08lx r1 : %08lx r0 : %08lx\n", - regs->ARM_r3, regs->ARM_r2, - regs->ARM_r1, regs->ARM_r0); - printk("Flags: %c%c%c%c", - flags & PSR_N_BIT ? 'N' : 'n', - flags & PSR_Z_BIT ? 'Z' : 'z', - flags & PSR_C_BIT ? 'C' : 'c', - flags & PSR_V_BIT ? 'V' : 'v'); - printk(" IRQs o%s FIQs o%s Mode %s Segment %s\n", - interrupts_enabled(regs) ? "n" : "ff", - fast_interrupts_enabled(regs) ? "n" : "ff", - processor_modes[processor_mode(regs)], - get_fs() == get_ds() ? "kernel" : "user"); -} - -void show_fpregs(struct user_fp *regs) -{ - int i; - - for (i = 0; i < 8; i++) { - unsigned long *p; - char type; - - p = (unsigned long *)(regs->fpregs + i); - - switch (regs->ftype[i]) { - case 1: type = 'f'; break; - case 2: type = 'd'; break; - case 3: type = 'e'; break; - default: type = '?'; break; - } - if (regs->init_flag) - type = '?'; - - printk(" f%d(%c): %08lx %08lx %08lx%c", - i, type, p[0], p[1], p[2], i & 1 ? '\n' : ' '); - } - - - printk("FPSR: %08lx FPCR: %08lx\n", - (unsigned long)regs->fpsr, - (unsigned long)regs->fpcr); -} - -/* - * Task structure and kernel stack allocation. - */ -static unsigned long *thread_info_head; -static unsigned int nr_thread_info; - -extern unsigned long get_page_8k(int priority); -extern void free_page_8k(unsigned long page); - -// FIXME - is this valid? -#define EXTRA_TASK_STRUCT 0 -#define ll_alloc_task_struct() ((struct thread_info *)get_page_8k(GFP_KERNEL)) -#define ll_free_task_struct(p) free_page_8k((unsigned long)(p)) - -//FIXME - do we use *task param below looks like we dont, which is ok? -//FIXME - if EXTRA_TASK_STRUCT is zero we can optimise the below away permanently. *IF* its supposed to be zero. -struct thread_info *alloc_thread_info(struct task_struct *task) -{ - struct thread_info *thread = NULL; - - if (EXTRA_TASK_STRUCT) { - unsigned long *p = thread_info_head; - - if (p) { - thread_info_head = (unsigned long *)p[0]; - nr_thread_info -= 1; - } - thread = (struct thread_info *)p; - } - - if (!thread) - thread = ll_alloc_task_struct(); - -#ifdef CONFIG_MAGIC_SYSRQ - /* - * The stack must be cleared if you want SYSRQ-T to - * give sensible stack usage information - */ - if (thread) { - char *p = (char *)thread; - memzero(p+KERNEL_STACK_SIZE, KERNEL_STACK_SIZE); - } -#endif - return thread; -} - -void free_thread_info(struct thread_info *thread) -{ - if (EXTRA_TASK_STRUCT && nr_thread_info < EXTRA_TASK_STRUCT) { - unsigned long *p = (unsigned long *)thread; - p[0] = (unsigned long)thread_info_head; - thread_info_head = p; - nr_thread_info += 1; - } else - ll_free_task_struct(thread); -} - -/* - * Free current thread data structures etc.. - */ -void exit_thread(void) -{ -} - -void flush_thread(void) -{ - struct thread_info *thread = current_thread_info(); - struct task_struct *tsk = current; - - memset(&tsk->thread.debug, 0, sizeof(struct debug_info)); - memset(&thread->fpstate, 0, sizeof(union fp_state)); - - clear_used_math(); -} - -void release_thread(struct task_struct *dead_task) -{ -} - -asmlinkage void ret_from_fork(void) __asm__("ret_from_fork"); - -int -copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start, - unsigned long unused, struct task_struct *p, struct pt_regs *regs) -{ - struct thread_info *thread = task_thread_info(p); - struct pt_regs *childregs = task_pt_regs(p); - - *childregs = *regs; - childregs->ARM_r0 = 0; - childregs->ARM_sp = stack_start; - - memset(&thread->cpu_context, 0, sizeof(struct cpu_context_save)); - thread->cpu_context.sp = (unsigned long)childregs; - thread->cpu_context.pc = (unsigned long)ret_from_fork | MODE_SVC26 | PSR_I_BIT; - - return 0; -} - -/* - * fill in the fpe structure for a core dump... - */ -int dump_fpu (struct pt_regs *regs, struct user_fp *fp) -{ - struct thread_info *thread = current_thread_info(); - int used_math = !!used_math(); - - if (used_math) - memcpy(fp, &thread->fpstate.soft, sizeof (*fp)); - - return used_math; -} - -/* - * fill in the user structure for a core dump.. - */ -void dump_thread(struct pt_regs * regs, struct user * dump) -{ - struct task_struct *tsk = current; - - dump->magic = CMAGIC; - dump->start_code = tsk->mm->start_code; - dump->start_stack = regs->ARM_sp & ~(PAGE_SIZE - 1); - - dump->u_tsize = (tsk->mm->end_code - tsk->mm->start_code) >> PAGE_SHIFT; - dump->u_dsize = (tsk->mm->brk - tsk->mm->start_data + PAGE_SIZE - 1) >> PAGE_SHIFT; - dump->u_ssize = 0; - - dump->u_debugreg[0] = tsk->thread.debug.bp[0].address; - dump->u_debugreg[1] = tsk->thread.debug.bp[1].address; - dump->u_debugreg[2] = tsk->thread.debug.bp[0].insn; - dump->u_debugreg[3] = tsk->thread.debug.bp[1].insn; - dump->u_debugreg[4] = tsk->thread.debug.nsaved; - - if (dump->start_stack < 0x04000000) - dump->u_ssize = (0x04000000 - dump->start_stack) >> PAGE_SHIFT; - - dump->regs = *regs; - dump->u_fpvalid = dump_fpu (regs, &dump->u_fp); -} - -/* - * Shuffle the argument into the correct register before calling the - * thread function. r1 is the thread argument, r2 is the pointer to - * the thread function, and r3 points to the exit function. - * FIXME - make sure this is right - the older code used to zero fp - * and cause the parent to call sys_exit (do_exit in this version) - */ -extern void kernel_thread_helper(void); - -asm( ".section .text\n" -" .align\n" -" .type kernel_thread_helper, #function\n" -"kernel_thread_helper:\n" -" mov r0, r1\n" -" mov lr, r3\n" -" mov pc, r2\n" -" .size kernel_thread_helper, . - kernel_thread_helper\n" -" .previous"); - -/* - * Create a kernel thread. - */ -pid_t kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs; - - memset(®s, 0, sizeof(regs)); - - regs.ARM_r1 = (unsigned long)arg; - regs.ARM_r2 = (unsigned long)fn; - regs.ARM_r3 = (unsigned long)do_exit; - regs.ARM_pc = (unsigned long)kernel_thread_helper | MODE_SVC26; - - return do_fork(flags|CLONE_VM|CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - - -unsigned long get_wchan(struct task_struct *p) -{ - unsigned long fp, lr; - unsigned long stack_page; - int count = 0; - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - - stack_page = 4096 + (unsigned long)p; - fp = thread_saved_fp(p); - do { - if (fp < stack_page || fp > 4092+stack_page) - return 0; - lr = pc_pointer (((unsigned long *)fp)[-1]); - if (!in_sched_functions(lr)) - return lr; - fp = *(unsigned long *) (fp - 12); - } while (count ++ < 16); - return 0; -} diff --git a/arch/arm26/kernel/ptrace.c b/arch/arm26/kernel/ptrace.c deleted file mode 100644 index 0fefb86970c..00000000000 --- a/arch/arm26/kernel/ptrace.c +++ /dev/null @@ -1,670 +0,0 @@ -/* - * linux/arch/arm26/kernel/ptrace.c - * - * By Ross Biro 1/23/92 - * edited by Linus Torvalds - * ARM modifications Copyright (C) 2000 Russell King - * - * 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. - */ -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/security.h> -#include <linux/signal.h> - -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/system.h> -//#include <asm/processor.h> - -#include "ptrace.h" - -#define REG_PC 15 -#define REG_PSR 15 -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -/* - * Breakpoint SWI instruction: SWI &9F0001 - */ -#define BREAKINST_ARM 0xef9f0001 - -/* - * this routine will get a word off of the processes privileged stack. - * the offset is how far from the base addr as stored in the THREAD. - * this routine assumes that all the privileged stacks are in our - * data space. - */ -static inline long get_user_reg(struct task_struct *task, int offset) -{ - return task_pt_regs(task)->uregs[offset]; -} - -/* - * this routine will put a word on the processes privileged stack. - * the offset is how far from the base addr as stored in the THREAD. - * this routine assumes that all the privileged stacks are in our - * data space. - */ -static inline int -put_user_reg(struct task_struct *task, int offset, long data) -{ - struct pt_regs newregs, *regs = task_pt_regs(task); - int ret = -EINVAL; - - newregs = *regs; - newregs.uregs[offset] = data; - - if (valid_user_regs(&newregs)) { - regs->uregs[offset] = data; - ret = 0; - } - - return ret; -} - -static inline int -read_u32(struct task_struct *task, unsigned long addr, u32 *res) -{ - int ret; - - ret = access_process_vm(task, addr, res, sizeof(*res), 0); - - return ret == sizeof(*res) ? 0 : -EIO; -} - -static inline int -read_instr(struct task_struct *task, unsigned long addr, u32 *res) -{ - int ret; - u32 val; - ret = access_process_vm(task, addr & ~3, &val, sizeof(val), 0); - ret = ret == sizeof(val) ? 0 : -EIO; - *res = val; - return ret; -} - -/* - * Get value of register `rn' (in the instruction) - */ -static unsigned long -ptrace_getrn(struct task_struct *child, unsigned long insn) -{ - unsigned int reg = (insn >> 16) & 15; - unsigned long val; - - val = get_user_reg(child, reg); - if (reg == 15) - val = pc_pointer(val + 8); //FIXME - correct for arm26? - - return val; -} - -/* - * Get value of operand 2 (in an ALU instruction) - */ -static unsigned long -ptrace_getaluop2(struct task_struct *child, unsigned long insn) -{ - unsigned long val; - int shift; - int type; - - if (insn & 1 << 25) { - val = insn & 255; - shift = (insn >> 8) & 15; - type = 3; - } else { - val = get_user_reg (child, insn & 15); - - if (insn & (1 << 4)) - shift = (int)get_user_reg (child, (insn >> 8) & 15); - else - shift = (insn >> 7) & 31; - - type = (insn >> 5) & 3; - } - - switch (type) { - case 0: val <<= shift; break; - case 1: val >>= shift; break; - case 2: - val = (((signed long)val) >> shift); - break; - case 3: - val = (val >> shift) | (val << (32 - shift)); - break; - } - return val; -} - -/* - * Get value of operand 2 (in a LDR instruction) - */ -static unsigned long -ptrace_getldrop2(struct task_struct *child, unsigned long insn) -{ - unsigned long val; - int shift; - int type; - - val = get_user_reg(child, insn & 15); - shift = (insn >> 7) & 31; - type = (insn >> 5) & 3; - - switch (type) { - case 0: val <<= shift; break; - case 1: val >>= shift; break; - case 2: - val = (((signed long)val) >> shift); - break; - case 3: - val = (val >> shift) | (val << (32 - shift)); - break; - } - return val; -} - -#define OP_MASK 0x01e00000 -#define OP_AND 0x00000000 -#define OP_EOR 0x00200000 -#define OP_SUB 0x00400000 -#define OP_RSB 0x00600000 -#define OP_ADD 0x00800000 -#define OP_ADC 0x00a00000 -#define OP_SBC 0x00c00000 -#define OP_RSC 0x00e00000 -#define OP_ORR 0x01800000 -#define OP_MOV 0x01a00000 -#define OP_BIC 0x01c00000 -#define OP_MVN 0x01e00000 - -static unsigned long -get_branch_address(struct task_struct *child, unsigned long pc, unsigned long insn) -{ - u32 alt = 0; - - switch (insn & 0x0e000000) { - case 0x00000000: - case 0x02000000: { - /* - * data processing - */ - long aluop1, aluop2, ccbit; - - if ((insn & 0xf000) != 0xf000) - break; - - aluop1 = ptrace_getrn(child, insn); - aluop2 = ptrace_getaluop2(child, insn); - ccbit = get_user_reg(child, REG_PSR) & PSR_C_BIT ? 1 : 0; - - switch (insn & OP_MASK) { - case OP_AND: alt = aluop1 & aluop2; break; - case OP_EOR: alt = aluop1 ^ aluop2; break; - case OP_SUB: alt = aluop1 - aluop2; break; - case OP_RSB: alt = aluop2 - aluop1; break; - case OP_ADD: alt = aluop1 + aluop2; break; - case OP_ADC: alt = aluop1 + aluop2 + ccbit; break; - case OP_SBC: alt = aluop1 - aluop2 + ccbit; break; - case OP_RSC: alt = aluop2 - aluop1 + ccbit; break; - case OP_ORR: alt = aluop1 | aluop2; break; - case OP_MOV: alt = aluop2; break; - case OP_BIC: alt = aluop1 & ~aluop2; break; - case OP_MVN: alt = ~aluop2; break; - } - break; - } - - case 0x04000000: - case 0x06000000: - /* - * ldr - */ - if ((insn & 0x0010f000) == 0x0010f000) { - unsigned long base; - - base = ptrace_getrn(child, insn); - if (insn & 1 << 24) { - long aluop2; - - if (insn & 0x02000000) - aluop2 = ptrace_getldrop2(child, insn); - else - aluop2 = insn & 0xfff; - - if (insn & 1 << 23) - base += aluop2; - else - base -= aluop2; - } - if (read_u32(child, base, &alt) == 0) - alt = pc_pointer(alt); - } - break; - - case 0x08000000: - /* - * ldm - */ - if ((insn & 0x00108000) == 0x00108000) { - unsigned long base; - unsigned int nr_regs; - - if (insn & (1 << 23)) { - nr_regs = hweight16(insn & 65535) << 2; - - if (!(insn & (1 << 24))) - nr_regs -= 4; - } else { - if (insn & (1 << 24)) - nr_regs = -4; - else - nr_regs = 0; - } - - base = ptrace_getrn(child, insn); - - if (read_u32(child, base + nr_regs, &alt) == 0) - alt = pc_pointer(alt); - break; - } - break; - - case 0x0a000000: { - /* - * bl or b - */ - signed long displ; - /* It's a branch/branch link: instead of trying to - * figure out whether the branch will be taken or not, - * we'll put a breakpoint at both locations. This is - * simpler, more reliable, and probably not a whole lot - * slower than the alternative approach of emulating the - * branch. - */ - displ = (insn & 0x00ffffff) << 8; - displ = (displ >> 6) + 8; - if (displ != 0 && displ != 4) - alt = pc + displ; - } - break; - } - - return alt; -} - -static int -swap_insn(struct task_struct *task, unsigned long addr, - void *old_insn, void *new_insn, int size) -{ - int ret; - - ret = access_process_vm(task, addr, old_insn, size, 0); - if (ret == size) - ret = access_process_vm(task, addr, new_insn, size, 1); - return ret; -} - -static void -add_breakpoint(struct task_struct *task, struct debug_info *dbg, unsigned long addr) -{ - int nr = dbg->nsaved; - - if (nr < 2) { - u32 new_insn = BREAKINST_ARM; - int res; - - res = swap_insn(task, addr, &dbg->bp[nr].insn, &new_insn, 4); - - if (res == 4) { - dbg->bp[nr].address = addr; - dbg->nsaved += 1; - } - } else - printk(KERN_ERR "ptrace: too many breakpoints\n"); -} - -/* - * Clear one breakpoint in the user program. We copy what the hardware - * does and use bit 0 of the address to indicate whether this is a Thumb - * breakpoint or an ARM breakpoint. - */ -static void clear_breakpoint(struct task_struct *task, struct debug_entry *bp) -{ - unsigned long addr = bp->address; - u32 old_insn; - int ret; - - ret = swap_insn(task, addr & ~3, &old_insn, - &bp->insn, 4); - - if (ret != 4 || old_insn != BREAKINST_ARM) - printk(KERN_ERR "%s:%d: corrupted ARM breakpoint at " - "0x%08lx (0x%08x)\n", task->comm, task->pid, - addr, old_insn); -} - -void ptrace_set_bpt(struct task_struct *child) -{ - struct pt_regs *regs; - unsigned long pc; - u32 insn; - int res; - - regs = task_pt_regs(child); - pc = instruction_pointer(regs); - - res = read_instr(child, pc, &insn); - if (!res) { - struct debug_info *dbg = &child->thread.debug; - unsigned long alt; - - dbg->nsaved = 0; - - alt = get_branch_address(child, pc, insn); - if (alt) - add_breakpoint(child, dbg, alt); - - /* - * Note that we ignore the result of setting the above - * breakpoint since it may fail. When it does, this is - * not so much an error, but a forewarning that we may - * be receiving a prefetch abort shortly. - * - * If we don't set this breakpoint here, then we can - * lose control of the thread during single stepping. - */ - if (!alt || predicate(insn) != PREDICATE_ALWAYS) - add_breakpoint(child, dbg, pc + 4); - } -} - -/* - * Ensure no single-step breakpoint is pending. Returns non-zero - * value if child was being single-stepped. - */ -void ptrace_cancel_bpt(struct task_struct *child) -{ - int i, nsaved = child->thread.debug.nsaved; - - child->thread.debug.nsaved = 0; - - if (nsaved > 2) { - printk("ptrace_cancel_bpt: bogus nsaved: %d!\n", nsaved); - nsaved = 2; - } - - for (i = 0; i < nsaved; i++) - clear_breakpoint(child, &child->thread.debug.bp[i]); -} - -/* - * Called by kernel/ptrace.c when detaching.. - * - * Make sure the single step bit is not set. - */ -void ptrace_disable(struct task_struct *child) -{ - child->ptrace &= ~PT_SINGLESTEP; - ptrace_cancel_bpt(child); -} - -/* - * Handle hitting a breakpoint. - */ -void ptrace_break(struct task_struct *tsk, struct pt_regs *regs) -{ - siginfo_t info; - - /* - * The PC is always left pointing at the next instruction. Fix this. - */ - regs->ARM_pc -= 4; - - if (tsk->thread.debug.nsaved == 0) - printk(KERN_ERR "ptrace: bogus breakpoint trap\n"); - - ptrace_cancel_bpt(tsk); - - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_BRKPT; - info.si_addr = (void *)instruction_pointer(regs) - 4; - - force_sig_info(SIGTRAP, &info, tsk); -} - -/* - * Read the word at offset "off" into the "struct user". We - * actually access the pt_regs stored on the kernel stack. - */ -static int ptrace_read_user(struct task_struct *tsk, unsigned long off, - unsigned long *ret) -{ - unsigned long tmp; - - if (off & 3 || off >= sizeof(struct user)) - return -EIO; - - tmp = 0; - if (off < sizeof(struct pt_regs)) - tmp = get_user_reg(tsk, off >> 2); - - return put_user(tmp, ret); -} - -/* - * Write the word at offset "off" into "struct user". We - * actually access the pt_regs stored on the kernel stack. - */ -static int ptrace_write_user(struct task_struct *tsk, unsigned long off, - unsigned long val) -{ - if (off & 3 || off >= sizeof(struct user)) - return -EIO; - - if (off >= sizeof(struct pt_regs)) - return 0; - - return put_user_reg(tsk, off >> 2, val); -} - -/* - * Get all user integer registers. - */ -static int ptrace_getregs(struct task_struct *tsk, void *uregs) -{ - struct pt_regs *regs = task_pt_regs(tsk); - - return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0; -} - -/* - * Set all user integer registers. - */ -static int ptrace_setregs(struct task_struct *tsk, void *uregs) -{ - struct pt_regs newregs; - int ret; - - ret = -EFAULT; - if (copy_from_user(&newregs, uregs, sizeof(struct pt_regs)) == 0) { - struct pt_regs *regs = task_pt_regs(tsk); - - ret = -EINVAL; - if (valid_user_regs(&newregs)) { - *regs = newregs; - ret = 0; - } - } - - return ret; -} - -/* - * Get the child FPU state. - */ -static int ptrace_getfpregs(struct task_struct *tsk, void *ufp) -{ - return copy_to_user(ufp, &task_thread_info(tsk)->fpstate, - sizeof(struct user_fp)) ? -EFAULT : 0; -} - -/* - * Set the child FPU state. - */ -static int ptrace_setfpregs(struct task_struct *tsk, void *ufp) -{ - set_stopped_child_used_math(tsk); - return copy_from_user(&task_thread_info(tsk)->fpstate, ufp, - sizeof(struct user_fp)) ? -EFAULT : 0; -} - -long arch_ptrace(struct task_struct *child, long request, long addr, long data) -{ - int ret; - - switch (request) { - /* - * read word at location "addr" in the child process. - */ - case PTRACE_PEEKTEXT: - case PTRACE_PEEKDATA: - ret = generic_ptrace_peekdata(child, addr, data); - break; - - case PTRACE_PEEKUSR: - ret = ptrace_read_user(child, addr, (unsigned long *)data); - break; - - /* - * write the word at location addr. - */ - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: - ret = generic_ptrace_pokedata(child, addr, data); - break; - - case PTRACE_POKEUSR: - ret = ptrace_write_user(child, addr, data); - break; - - /* - * continue/restart and stop at next (return from) syscall - */ - case PTRACE_SYSCALL: - case PTRACE_CONT: - ret = -EIO; - if (!valid_signal(data)) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - /* make sure single-step breakpoint is gone. */ - child->ptrace &= ~PT_SINGLESTEP; - ptrace_cancel_bpt(child); - wake_up_process(child); - ret = 0; - break; - - /* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: - /* make sure single-step breakpoint is gone. */ - child->ptrace &= ~PT_SINGLESTEP; - ptrace_cancel_bpt(child); - if (child->exit_state != EXIT_ZOMBIE) { - child->exit_code = SIGKILL; - wake_up_process(child); - } - ret = 0; - break; - - /* - * execute single instruction. - */ - case PTRACE_SINGLESTEP: - ret = -EIO; - if (!valid_signal(data)) - break; - child->ptrace |= PT_SINGLESTEP; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - /* give it a chance to run. */ - wake_up_process(child); - ret = 0; - break; - - case PTRACE_DETACH: - ret = ptrace_detach(child, data); - break; - - case PTRACE_GETREGS: - ret = ptrace_getregs(child, (void *)data); - break; - - case PTRACE_SETREGS: - ret = ptrace_setregs(child, (void *)data); - break; - - case PTRACE_GETFPREGS: - ret = ptrace_getfpregs(child, (void *)data); - break; - - case PTRACE_SETFPREGS: - ret = ptrace_setfpregs(child, (void *)data); - break; - - default: - ret = ptrace_request(child, request, addr, data); - break; - } - - return ret; -} - -asmlinkage void syscall_trace(int why, struct pt_regs *regs) -{ - unsigned long ip; - - if (!test_thread_flag(TIF_SYSCALL_TRACE)) - return; - if (!(current->ptrace & PT_PTRACED)) - return; - - /* - * Save IP. IP is used to denote syscall entry/exit: - * IP = 0 -> entry, = 1 -> exit - */ - ip = regs->ARM_ip; - regs->ARM_ip = why; - - /* the 0x80 provides a way for the tracing parent to distinguish - between a syscall stop and SIGTRAP delivery */ - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } - regs->ARM_ip = ip; -} diff --git a/arch/arm26/kernel/ptrace.h b/arch/arm26/kernel/ptrace.h deleted file mode 100644 index 846c9d8d36e..00000000000 --- a/arch/arm26/kernel/ptrace.h +++ /dev/null @@ -1,13 +0,0 @@ -/* - * linux/arch/arm26/kernel/ptrace.h - * - * Copyright (C) 2000-2003 Russell King - * Copyright (C) 2003 Ian Molton - * - * 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. - */ -extern void ptrace_cancel_bpt(struct task_struct *); -extern void ptrace_set_bpt(struct task_struct *); -extern void ptrace_break(struct task_struct *, struct pt_regs *); diff --git a/arch/arm26/kernel/semaphore.c b/arch/arm26/kernel/semaphore.c deleted file mode 100644 index 5447a06db3f..00000000000 --- a/arch/arm26/kernel/semaphore.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - * ARM semaphore implementation, taken from - * - * i386 semaphore implementation. - * - * (C) Copyright 1999 Linus Torvalds - * (C) Copyright 2003 Ian Molton (ARM26 mods) - * - * Modified for ARM by Russell King - * - * 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. - */ -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/errno.h> -#include <linux/init.h> - -#include <asm/semaphore.h> - -/* - * Semaphores are implemented using a two-way counter: - * The "count" variable is decremented for each process - * that tries to acquire the semaphore, while the "sleeping" - * variable is a count of such acquires. - * - * Notably, the inline "up()" and "down()" functions can - * efficiently test if they need to do any extra work (up - * needs to do something only if count was negative before - * the increment operation. - * - * "sleeping" and the contention routine ordering is - * protected by the semaphore spinlock. - * - * Note that these functions are only called when there is - * contention on the lock, and as such all this is the - * "non-critical" part of the whole semaphore business. The - * critical part is the inline stuff in <asm/semaphore.h> - * where we want to avoid any extra jumps and calls. - */ - -/* - * Logic: - * - only on a boundary condition do we need to care. When we go - * from a negative count to a non-negative, we wake people up. - * - when we go from a non-negative count to a negative do we - * (a) synchronize with the "sleeper" count and (b) make sure - * that we're on the wakeup list before we synchronize so that - * we cannot lose wakeup events. - */ - -void __up(struct semaphore *sem) -{ - wake_up(&sem->wait); -} - -static DEFINE_SPINLOCK(semaphore_lock); - -void __sched __down(struct semaphore * sem) -{ - struct task_struct *tsk = current; - DECLARE_WAITQUEUE(wait, tsk); - tsk->state = TASK_UNINTERRUPTIBLE; - add_wait_queue_exclusive(&sem->wait, &wait); - - spin_lock_irq(&semaphore_lock); - sem->sleepers++; - for (;;) { - int sleepers = sem->sleepers; - - /* - * Add "everybody else" into it. They aren't - * playing, because we own the spinlock. - */ - if (!atomic_add_negative(sleepers - 1, &sem->count)) { - sem->sleepers = 0; - break; - } - sem->sleepers = 1; /* us - see -1 above */ - spin_unlock_irq(&semaphore_lock); - - schedule(); - tsk->state = TASK_UNINTERRUPTIBLE; - spin_lock_irq(&semaphore_lock); - } - spin_unlock_irq(&semaphore_lock); - remove_wait_queue(&sem->wait, &wait); - tsk->state = TASK_RUNNING; - wake_up(&sem->wait); -} - -int __sched __down_interruptible(struct semaphore * sem) -{ - int retval = 0; - struct task_struct *tsk = current; - DECLARE_WAITQUEUE(wait, tsk); - tsk->state = TASK_INTERRUPTIBLE; - add_wait_queue_exclusive(&sem->wait, &wait); - - spin_lock_irq(&semaphore_lock); - sem->sleepers ++; - for (;;) { - int sleepers = sem->sleepers; - - /* - * With signals pending, this turns into - * the trylock failure case - we won't be - * sleeping, and we* can't get the lock as - * it has contention. Just correct the count - * and exit. - */ - if (signal_pending(current)) { - retval = -EINTR; - sem->sleepers = 0; - atomic_add(sleepers, &sem->count); - break; - } - - /* - * Add "everybody else" into it. They aren't - * playing, because we own the spinlock. The - * "-1" is because we're still hoping to get - * the lock. - */ - if (!atomic_add_negative(sleepers - 1, &sem->count)) { - sem->sleepers = 0; - break; - } - sem->sleepers = 1; /* us - see -1 above */ - spin_unlock_irq(&semaphore_lock); - - schedule(); - tsk->state = TASK_INTERRUPTIBLE; - spin_lock_irq(&semaphore_lock); - } - spin_unlock_irq(&semaphore_lock); - tsk->state = TASK_RUNNING; - remove_wait_queue(&sem->wait, &wait); - wake_up(&sem->wait); - return retval; -} - -/* - * Trylock failed - make sure we correct for - * having decremented the count. - * - * We could have done the trylock with a - * single "cmpxchg" without failure cases, - * but then it wouldn't work on a 386. - */ -int __down_trylock(struct semaphore * sem) -{ - int sleepers; - unsigned long flags; - - spin_lock_irqsave(&semaphore_lock, flags); - sleepers = sem->sleepers + 1; - sem->sleepers = 0; - - /* - * Add "everybody else" and us into it. They aren't - * playing, because we own the spinlock. - */ - if (!atomic_add_negative(sleepers, &sem->count)) - wake_up(&sem->wait); - - spin_unlock_irqrestore(&semaphore_lock, flags); - return 1; -} - -/* - * The semaphore operations have a special calling sequence that - * allow us to do a simpler in-line version of them. These routines - * need to convert that sequence back into the C sequence when - * there is contention on the semaphore. - * - * ip contains the semaphore pointer on entry. Save the C-clobbered - * registers (r0 to r3 and lr), but not ip, as we use it as a return - * value in some cases.. - */ -asm(" .section .sched.text , #alloc, #execinstr \n\ - .align 5 \n\ - .globl __down_failed \n\ -__down_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ - mov r0, ip \n\ - bl __down \n\ - ldmfd sp!, {r0 - r3, pc}^ \n\ - \n\ - .align 5 \n\ - .globl __down_interruptible_failed \n\ -__down_interruptible_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ - mov r0, ip \n\ - bl __down_interruptible \n\ - mov ip, r0 \n\ - ldmfd sp!, {r0 - r3, pc}^ \n\ - \n\ - .align 5 \n\ - .globl __down_trylock_failed \n\ -__down_trylock_failed: \n\ - stmfd sp!, {r0 - r3, lr} \n\ - mov r0, ip \n\ - bl __down_trylock \n\ - mov ip, r0 \n\ - ldmfd sp!, {r0 - r3, pc}^ \n\ - \n\ - .align 5 \n\ - .globl __up_wakeup \n\ -__up_wakeup: \n\ - stmfd sp!, {r0 - r3, lr} \n\ - mov r0, ip \n\ - bl __up \n\ - ldmfd sp!, {r0 - r3, pc}^ \n\ - "); - -EXPORT_SYMBOL(__down_failed); -EXPORT_SYMBOL(__down_interruptible_failed); -EXPORT_SYMBOL(__down_trylock_failed); -EXPORT_SYMBOL(__up_wakeup); - diff --git a/arch/arm26/kernel/setup.c b/arch/arm26/kernel/setup.c deleted file mode 100644 index 0e006c6cd5a..00000000000 --- a/arch/arm26/kernel/setup.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * linux/arch/arm26/kernel/setup.c - * - * Copyright (C) 1995-2001 Russell King - * Copyright (C) 2003 Ian Molton - * - * 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. - */ -#include <linux/kernel.h> -#include <linux/stddef.h> -#include <linux/ioport.h> -#include <linux/delay.h> -#include <linux/utsname.h> -#include <linux/blkdev.h> -#include <linux/console.h> -#include <linux/bootmem.h> -#include <linux/seq_file.h> -#include <linux/screen_info.h> -#include <linux/init.h> -#include <linux/root_dev.h> - -#include <asm/elf.h> -#include <asm/hardware.h> -#include <asm/io.h> -#include <asm/procinfo.h> -#include <asm/setup.h> -#include <asm/mach-types.h> -#include <asm/tlbflush.h> - -#include <asm/irqchip.h> - -#ifndef MEM_SIZE -#define MEM_SIZE (16*1024*1024) -#endif - -#ifdef CONFIG_PREEMPT -DEFINE_SPINLOCK(kernel_flag); -#endif - -#if defined(CONFIG_FPE_NWFPE) -char fpe_type[8]; - -static int __init fpe_setup(char *line) -{ - memcpy(fpe_type, line, 8); - return 1; -} - -__setup("fpe=", fpe_setup); -#endif - -extern void paging_init(struct meminfo *); -extern void convert_to_tag_list(struct tag *tags); -extern void squash_mem_tags(struct tag *tag); -extern void bootmem_init(struct meminfo *); -extern int root_mountflags; -extern int _stext, _text, _etext, _edata, _end; -#ifdef CONFIG_XIP_KERNEL -extern int _endtext, _sdata; -#endif - - -unsigned int processor_id; -unsigned int __machine_arch_type; -unsigned int system_rev; -unsigned int system_serial_low; -unsigned int system_serial_high; -unsigned int elf_hwcap; -unsigned int memc_ctrl_reg; -unsigned int number_mfm_drives; - -struct processor processor; - -char elf_platform[ELF_PLATFORM_SIZE]; - -unsigned long phys_initrd_start __initdata = 0; -unsigned long phys_initrd_size __initdata = 0; -static struct meminfo meminfo __initdata = { 0, }; -static struct proc_info_item proc_info; -static const char *machine_name; -static char __initdata command_line[COMMAND_LINE_SIZE]; - -static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE; - -/* - * Standard memory resources - */ -static struct resource mem_res[] = { - { "Video RAM", 0, 0, IORESOURCE_MEM }, - { "Kernel code", 0, 0, IORESOURCE_MEM }, - { "Kernel data", 0, 0, IORESOURCE_MEM } -}; - -#define video_ram mem_res[0] -#define kernel_code mem_res[1] -#define kernel_data mem_res[2] - -static struct resource io_res[] = { - { "reserved", 0x3bc, 0x3be, IORESOURCE_IO | IORESOURCE_BUSY }, - { "reserved", 0x378, 0x37f, IORESOURCE_IO | IORESOURCE_BUSY }, - { "reserved", 0x278, 0x27f, IORESOURCE_IO | IORESOURCE_BUSY } -}; - -#define lp0 io_res[0] -#define lp1 io_res[1] -#define lp2 io_res[2] - -#define dump_cpu_info() do { } while (0) - -static void __init setup_processor(void) -{ - extern struct proc_info_list __proc_info_begin, __proc_info_end; - struct proc_info_list *list; - - /* - * locate processor in the list of supported processor - * types. The linker builds this table for us from the - * entries in arch/arm26/mm/proc-*.S - */ - for (list = &__proc_info_begin; list < &__proc_info_end ; list++) - if ((processor_id & list->cpu_mask) == list->cpu_val) - break; - - /* - * If processor type is unrecognised, then we - * can do nothing... - */ - if (list >= &__proc_info_end) { - printk("CPU configuration botched (ID %08x), unable " - "to continue.\n", processor_id); - while (1); - } - - proc_info = *list->info; - processor = *list->proc; - - - printk("CPU: %s %s revision %d\n", - proc_info.manufacturer, proc_info.cpu_name, - (int)processor_id & 15); - - dump_cpu_info(); - - sprintf(init_utsname()->machine, "%s", list->arch_name); - sprintf(elf_platform, "%s", list->elf_name); - elf_hwcap = list->elf_hwcap; - - cpu_proc_init(); -} - -/* - * Initial parsing of the command line. We need to pick out the - * memory size. We look for mem=size@start, where start and size - * are "size[KkMm]" - */ -static void __init -parse_cmdline(struct meminfo *mi, char **cmdline_p, char *from) -{ - char c = ' ', *to = command_line; - int usermem = 0, len = 0; - - for (;;) { - if (c == ' ' && !memcmp(from, "mem=", 4)) { - unsigned long size, start; - - if (to != command_line) - to -= 1; - - /* - * If the user specifies memory size, we - * blow away any automatically generated - * size. - */ - if (usermem == 0) { - usermem = 1; - mi->nr_banks = 0; - } - - start = PHYS_OFFSET; - size = memparse(from + 4, &from); - if (*from == '@') - start = memparse(from + 1, &from); - - mi->bank[mi->nr_banks].start = start; - mi->bank[mi->nr_banks].size = size; - mi->bank[mi->nr_banks].node = PHYS_TO_NID(start); - mi->nr_banks += 1; - } - c = *from++; - if (!c) - break; - if (COMMAND_LINE_SIZE <= ++len) - break; - *to++ = c; - } - *to = '\0'; - *cmdline_p = command_line; -} - -static void __init -setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz) -{ -#ifdef CONFIG_BLK_DEV_RAM - extern int rd_size, rd_image_start, rd_prompt, rd_doload; - - rd_image_start = image_start; - rd_prompt = prompt; - rd_doload = doload; - - if (rd_sz) - rd_size = rd_sz; -#endif -} - -static void __init -request_standard_resources(struct meminfo *mi) -{ - struct resource *res; - int i; - - kernel_code.start = init_mm.start_code; - kernel_code.end = init_mm.end_code - 1; -#ifdef CONFIG_XIP_KERNEL - kernel_data.start = init_mm.start_data; -#else - kernel_data.start = init_mm.end_code; -#endif - kernel_data.end = init_mm.brk - 1; - - for (i = 0; i < mi->nr_banks; i++) { - unsigned long virt_start, virt_end; - - if (mi->bank[i].size == 0) - continue; - - virt_start = mi->bank[i].start; - virt_end = virt_start + mi->bank[i].size - 1; - - res = alloc_bootmem_low(sizeof(*res)); - res->name = "System RAM"; - res->start = virt_start; - res->end = virt_end; - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; - - request_resource(&iomem_resource, res); - - if (kernel_code.start >= res->start && - kernel_code.end <= res->end) - request_resource(res, &kernel_code); - if (kernel_data.start >= res->start && - kernel_data.end <= res->end) - request_resource(res, &kernel_data); - } - -/* FIXME - needed? if (mdesc->video_start) { - video_ram.start = mdesc->video_start; - video_ram.end = mdesc->video_end; - request_resource(&iomem_resource, &video_ram); - }*/ - - /* - * Some machines don't have the possibility of ever - * possessing lp1 or lp2 - */ - if (0) /* FIXME - need to do this for A5k at least */ - request_resource(&ioport_resource, &lp0); -} - -/* - * Tag parsing. - * - * This is the new way of passing data to the kernel at boot time. Rather - * than passing a fixed inflexible structure to the kernel, we pass a list - * of variable-sized tags to the kernel. The first tag must be a ATAG_CORE - * tag for the list to be recognised (to distinguish the tagged list from - * a param_struct). The list is terminated with a zero-length tag (this tag - * is not parsed in any way). - */ -static int __init parse_tag_core(const struct tag *tag) -{ - if (tag->hdr.size > 2) { - if ((tag->u.core.flags & 1) == 0) - root_mountflags &= ~MS_RDONLY; - ROOT_DEV = old_decode_dev(tag->u.core.rootdev); - } - return 0; -} - -__tagtable(ATAG_CORE, parse_tag_core); - -static int __init parse_tag_mem32(const struct tag *tag) -{ - if (meminfo.nr_banks >= NR_BANKS) { - printk(KERN_WARNING - "Ignoring memory bank 0x%08x size %dKB\n", - tag->u.mem.start, tag->u.mem.size / 1024); - return -EINVAL; - } - meminfo.bank[meminfo.nr_banks].start = tag->u.mem.start; - meminfo.bank[meminfo.nr_banks].size = tag->u.mem.size; - meminfo.bank[meminfo.nr_banks].node = PHYS_TO_NID(tag->u.mem.start); - meminfo.nr_banks += 1; - - return 0; -} - -__tagtable(ATAG_MEM, parse_tag_mem32); - -#if defined(CONFIG_DUMMY_CONSOLE) -struct screen_info screen_info = { - .orig_video_lines = 30, - .orig_video_cols = 80, - .orig_video_mode = 0, - .orig_video_ega_bx = 0, - .orig_video_isVGA = 1, - .orig_video_points = 8 -}; - -static int __init parse_tag_videotext(const struct tag *tag) -{ - screen_info.orig_x = tag->u.videotext.x; - screen_info.orig_y = tag->u.videotext.y; - screen_info.orig_video_page = tag->u.videotext.video_page; - screen_info.orig_video_mode = tag->u.videotext.video_mode; - screen_info.orig_video_cols = tag->u.videotext.video_cols; - screen_info.orig_video_ega_bx = tag->u.videotext.video_ega_bx; - screen_info.orig_video_lines = tag->u.videotext.video_lines; - screen_info.orig_video_isVGA = tag->u.videotext.video_isvga; - screen_info.orig_video_points = tag->u.videotext.video_points; - return 0; -} - -__tagtable(ATAG_VIDEOTEXT, parse_tag_videotext); -#endif - -static int __init parse_tag_acorn(const struct tag *tag) -{ - memc_ctrl_reg = tag->u.acorn.memc_control_reg; - number_mfm_drives = tag->u.acorn.adfsdrives; - return 0; -} - -__tagtable(ATAG_ACORN, parse_tag_acorn); - -static int __init parse_tag_ramdisk(const struct tag *tag) -{ - setup_ramdisk((tag->u.ramdisk.flags & 1) == 0, - (tag->u.ramdisk.flags & 2) == 0, - tag->u.ramdisk.start, tag->u.ramdisk.size); - return 0; -} - -__tagtable(ATAG_RAMDISK, parse_tag_ramdisk); - -static int __init parse_tag_initrd(const struct tag *tag) -{ - printk(KERN_WARNING "ATAG_INITRD is deprecated; please update your bootloader. \n"); - phys_initrd_start = (unsigned long)tag->u.initrd.start; - phys_initrd_size = (unsigned long)tag->u.initrd.size; - return 0; -} - -__tagtable(ATAG_INITRD, parse_tag_initrd); - -static int __init parse_tag_initrd2(const struct tag *tag) -{ - printk(KERN_WARNING "ATAG_INITRD is deprecated; please update your bootloader. \n"); - phys_initrd_start = (unsigned long)tag->u.initrd.start; - phys_initrd_size = (unsigned long)tag->u.initrd.size; - return 0; -} - -__tagtable(ATAG_INITRD2, parse_tag_initrd2); - -static int __init parse_tag_serialnr(const struct tag *tag) -{ - system_serial_low = tag->u.serialnr.low; - system_serial_high = tag->u.serialnr.high; - return 0; -} - -__tagtable(ATAG_SERIAL, parse_tag_serialnr); - -static int __init parse_tag_revision(const struct tag *tag) -{ - system_rev = tag->u.revision.rev; - return 0; -} - -__tagtable(ATAG_REVISION, parse_tag_revision); - -static int __init parse_tag_cmdline(const struct tag *tag) -{ - strncpy(default_command_line, tag->u.cmdline.cmdline, COMMAND_LINE_SIZE); - default_command_line[COMMAND_LINE_SIZE - 1] = '\0'; - return 0; -} - -__tagtable(ATAG_CMDLINE, parse_tag_cmdline); - -/* - * Scan the tag table for this tag, and call its parse function. - * The tag table is built by the linker from all the __tagtable - * declarations. - */ -static int __init parse_tag(const struct tag *tag) -{ - extern struct tagtable __tagtable_begin, __tagtable_end; - struct tagtable *t; - - for (t = &__tagtable_begin; t < &__tagtable_end; t++) - if (tag->hdr.tag == t->tag) { - t->parse(tag); - break; - } - - return t < &__tagtable_end; -} - -/* - * Parse all tags in the list, checking both the global and architecture - * specific tag tables. - */ -static void __init parse_tags(const struct tag *t) -{ - for (; t->hdr.size; t = tag_next(t)) - if (!parse_tag(t)) - printk(KERN_WARNING - "Ignoring unrecognised tag 0x%08x\n", - t->hdr.tag); -} - -/* - * This holds our defaults. - */ -static struct init_tags { - struct tag_header hdr1; - struct tag_core core; - struct tag_header hdr2; - struct tag_mem32 mem; - struct tag_header hdr3; -} init_tags __initdata = { - { tag_size(tag_core), ATAG_CORE }, - { 1, PAGE_SIZE, 0xff }, - { tag_size(tag_mem32), ATAG_MEM }, - { MEM_SIZE, PHYS_OFFSET }, - { 0, ATAG_NONE } -}; - -void __init setup_arch(char **cmdline_p) -{ - struct tag *tags = (struct tag *)&init_tags; - char *from = default_command_line; - - setup_processor(); - if(machine_arch_type == MACH_TYPE_A5K) - machine_name = "A5000"; - else if(machine_arch_type == MACH_TYPE_ARCHIMEDES) - machine_name = "Archimedes"; - else - machine_name = "UNKNOWN"; - - //FIXME - the tag struct is always copied here but this is a block - // of RAM that is accidentally reserved along with video RAM. perhaps - // it would be a good idea to explicitly reserve this? - - tags = (struct tag *)0x0207c000; - - /* - * If we have the old style parameters, convert them to - * a tag list. - */ - if (tags->hdr.tag != ATAG_CORE) - convert_to_tag_list(tags); - if (tags->hdr.tag != ATAG_CORE) - tags = (struct tag *)&init_tags; - if (tags->hdr.tag == ATAG_CORE) { - if (meminfo.nr_banks != 0) - squash_mem_tags(tags); - parse_tags(tags); - } - - init_mm.start_code = (unsigned long) &_text; -#ifndef CONFIG_XIP_KERNEL - init_mm.end_code = (unsigned long) &_etext; -#else - init_mm.end_code = (unsigned long) &_endtext; - init_mm.start_data = (unsigned long) &_sdata; -#endif - init_mm.end_data = (unsigned long) &_edata; - init_mm.brk = (unsigned long) &_end; - - memcpy(boot_command_line, from, COMMAND_LINE_SIZE); - boot_command_line[COMMAND_LINE_SIZE-1] = '\0'; - parse_cmdline(&meminfo, cmdline_p, from); - bootmem_init(&meminfo); - paging_init(&meminfo); - request_standard_resources(&meminfo); - -#ifdef CONFIG_VT -#if defined(CONFIG_DUMMY_CONSOLE) - conswitchp = &dummy_con; -#endif -#endif -} - -static const char *hwcap_str[] = { - "swp", - "half", - "thumb", - "26bit", - "fastmult", - "fpa", - "vfp", - "edsp", - NULL -}; - -static int c_show(struct seq_file *m, void *v) -{ - int i; - - seq_printf(m, "Processor\t: %s %s rev %d (%s)\n", - proc_info.manufacturer, proc_info.cpu_name, - (int)processor_id & 15, elf_platform); - - seq_printf(m, "BogoMIPS\t: %lu.%02lu\n", - loops_per_jiffy / (500000/HZ), - (loops_per_jiffy / (5000/HZ)) % 100); - - /* dump out the processor features */ - seq_puts(m, "Features\t: "); - - for (i = 0; hwcap_str[i]; i++) - if (elf_hwcap & (1 << i)) - seq_printf(m, "%s ", hwcap_str[i]); - - seq_puts(m, "\n"); - - seq_printf(m, "CPU part\t\t: %07x\n", processor_id >> 4); - seq_printf(m, "CPU revision\t: %d\n\n", processor_id & 15); - seq_printf(m, "Hardware\t: %s\n", machine_name); - seq_printf(m, "Revision\t: %04x\n", system_rev); - seq_printf(m, "Serial\t\t: %08x%08x\n", - system_serial_high, system_serial_low); - - return 0; -} - -static void *c_start(struct seq_file *m, loff_t *pos) -{ - return *pos < 1 ? (void *)1 : NULL; -} - -static void *c_next(struct seq_file *m, void *v, loff_t *pos) -{ - ++*pos; - return NULL; -} - -static void c_stop(struct seq_file *m, void *v) -{ -} - -struct seq_operations cpuinfo_op = { - .start = c_start, - .next = c_next, - .stop = c_stop, - .show = c_show -}; diff --git a/arch/arm26/kernel/signal.c b/arch/arm26/kernel/signal.c deleted file mode 100644 index 379b82dc645..00000000000 --- a/arch/arm26/kernel/signal.c +++ /dev/null @@ -1,538 +0,0 @@ -/* - * linux/arch/arm26/kernel/signal.c - * - * Copyright (C) 1995-2002 Russell King - * Copyright (C) 2003 Ian Molton (ARM26) - * - * FIXME!!! This is probably very broken (13/05/2003) - * - * 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. - */ -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/signal.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/personality.h> -#include <linux/tty.h> -#include <linux/binfmts.h> -#include <linux/elf.h> - -#include <asm/pgalloc.h> -#include <asm/ucontext.h> -#include <asm/uaccess.h> -#include <asm/unistd.h> - -#include "ptrace.h" - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -/* - * For ARM syscalls, we encode the syscall number into the instruction. - */ -#define SWI_SYS_SIGRETURN (0xef000000|(__NR_sigreturn)) -#define SWI_SYS_RT_SIGRETURN (0xef000000|(__NR_rt_sigreturn)) - -static int do_signal(sigset_t *oldset, struct pt_regs * regs, int syscall); - -/* - * atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int sys_sigsuspend(int restart, unsigned long oldmask, old_sigset_t mask, struct pt_regs *regs) -{ - sigset_t saveset; - - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - saveset = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - regs->ARM_r0 = -EINTR; - - while (1) { - current->state = TASK_INTERRUPTIBLE; - schedule(); - if (do_signal(&saveset, regs, 0)) - return regs->ARM_r0; - } -} - -asmlinkage int -sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, struct pt_regs *regs) -{ - sigset_t saveset, newset; - - /* XXX: Don't preclude handling different sized sigset_t's. */ - if (sigsetsize != sizeof(sigset_t)) - return -EINVAL; - - if (copy_from_user(&newset, unewset, sizeof(newset))) - return -EFAULT; - sigdelsetmask(&newset, ~_BLOCKABLE); - - spin_lock_irq(¤t->sighand->siglock); - saveset = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - regs->ARM_r0 = -EINTR; - - while (1) { - current->state = TASK_INTERRUPTIBLE; - schedule(); - if (do_signal(&saveset, regs, 0)) - return regs->ARM_r0; - } -} - -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction *act, - struct old_sigaction *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) - return -EFAULT; - __get_user(new_ka.sa.sa_flags, &act->sa_flags); - __get_user(mask, &act->sa_mask); - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) - return -EFAULT; - __put_user(old_ka.sa.sa_flags, &oact->sa_flags); - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); - } - - return ret; -} - -/* - * Do a signal return; undo the signal stack. - */ -struct sigframe -{ - struct sigcontext sc; - unsigned long extramask[_NSIG_WORDS-1]; - unsigned long retcode; -}; - -struct rt_sigframe -{ - struct siginfo *pinfo; - void *puc; - struct siginfo info; - struct ucontext uc; - unsigned long retcode; -}; - -static int -restore_sigcontext(struct pt_regs *regs, struct sigcontext *sc) -{ - int err = 0; - - __get_user_error(regs->ARM_r0, &sc->arm_r0, err); - __get_user_error(regs->ARM_r1, &sc->arm_r1, err); - __get_user_error(regs->ARM_r2, &sc->arm_r2, err); - __get_user_error(regs->ARM_r3, &sc->arm_r3, err); - __get_user_error(regs->ARM_r4, &sc->arm_r4, err); - __get_user_error(regs->ARM_r5, &sc->arm_r5, err); - __get_user_error(regs->ARM_r6, &sc->arm_r6, err); - __get_user_error(regs->ARM_r7, &sc->arm_r7, err); - __get_user_error(regs->ARM_r8, &sc->arm_r8, err); - __get_user_error(regs->ARM_r9, &sc->arm_r9, err); - __get_user_error(regs->ARM_r10, &sc->arm_r10, err); - __get_user_error(regs->ARM_fp, &sc->arm_fp, err); - __get_user_error(regs->ARM_ip, &sc->arm_ip, err); - __get_user_error(regs->ARM_sp, &sc->arm_sp, err); - __get_user_error(regs->ARM_lr, &sc->arm_lr, err); - __get_user_error(regs->ARM_pc, &sc->arm_pc, err); - - err |= !valid_user_regs(regs); - - return err; -} - -asmlinkage int sys_sigreturn(struct pt_regs *regs) -{ - struct sigframe *frame; - sigset_t set; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - if (regs->ARM_sp & 7) - goto badframe; - - frame = (struct sigframe *)regs->ARM_sp; - - if (!access_ok(VERIFY_READ, frame, sizeof (*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.oldmask) - || (_NSIG_WORDS > 1 - && __copy_from_user(&set.sig[1], &frame->extramask, - sizeof(frame->extramask)))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (restore_sigcontext(regs, &frame->sc)) - goto badframe; - - /* Send SIGTRAP if we're single-stepping */ - if (current->ptrace & PT_SINGLESTEP) { - ptrace_cancel_bpt(current); - send_sig(SIGTRAP, current, 1); - } - - return regs->ARM_r0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -asmlinkage int sys_rt_sigreturn(struct pt_regs *regs) -{ - struct rt_sigframe *frame; - sigset_t set; - - /* - * Since we stacked the signal on a 64-bit boundary, - * then 'sp' should be word aligned here. If it's - * not, then the user is trying to mess with us. - */ - if (regs->ARM_sp & 7) - goto badframe; - - frame = (struct rt_sigframe *)regs->ARM_sp; - - if (!access_ok(VERIFY_READ, frame, sizeof (*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (restore_sigcontext(regs, &frame->uc.uc_mcontext)) - goto badframe; - - /* Send SIGTRAP if we're single-stepping */ - if (current->ptrace & PT_SINGLESTEP) { - ptrace_cancel_bpt(current); - send_sig(SIGTRAP, current, 1); - } - - return regs->ARM_r0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -static int -setup_sigcontext(struct sigcontext *sc, /*struct _fpstate *fpstate,*/ - struct pt_regs *regs, unsigned long mask) -{ - int err = 0; - - __put_user_error(regs->ARM_r0, &sc->arm_r0, err); - __put_user_error(regs->ARM_r1, &sc->arm_r1, err); - __put_user_error(regs->ARM_r2, &sc->arm_r2, err); - __put_user_error(regs->ARM_r3, &sc->arm_r3, err); - __put_user_error(regs->ARM_r4, &sc->arm_r4, err); - __put_user_error(regs->ARM_r5, &sc->arm_r5, err); - __put_user_error(regs->ARM_r6, &sc->arm_r6, err); - __put_user_error(regs->ARM_r7, &sc->arm_r7, err); - __put_user_error(regs->ARM_r8, &sc->arm_r8, err); - __put_user_error(regs->ARM_r9, &sc->arm_r9, err); - __put_user_error(regs->ARM_r10, &sc->arm_r10, err); - __put_user_error(regs->ARM_fp, &sc->arm_fp, err); - __put_user_error(regs->ARM_ip, &sc->arm_ip, err); - __put_user_error(regs->ARM_sp, &sc->arm_sp, err); - __put_user_error(regs->ARM_lr, &sc->arm_lr, err); - __put_user_error(regs->ARM_pc, &sc->arm_pc, err); - - __put_user_error(current->thread.trap_no, &sc->trap_no, err); - __put_user_error(current->thread.error_code, &sc->error_code, err); - __put_user_error(current->thread.address, &sc->fault_address, err); - __put_user_error(mask, &sc->oldmask, err); - - return err; -} - -static inline void * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, int framesize) -{ - unsigned long sp = regs->ARM_sp; - - /* - * This is the X/Open sanctioned signal stack switching. - */ - if ((ka->sa.sa_flags & SA_ONSTACK) && !sas_ss_flags(sp)) - sp = current->sas_ss_sp + current->sas_ss_size; - - /* - * ATPCS B01 mandates 8-byte alignment - */ - return (void *)((sp - framesize) & ~7); -} - -static int -setup_return(struct pt_regs *regs, struct k_sigaction *ka, - unsigned long *rc, void *frame, int usig) -{ - unsigned long handler = (unsigned long)ka->sa.sa_handler; - unsigned long retcode; - - if (ka->sa.sa_flags & SA_RESTORER) { - retcode = (unsigned long)ka->sa.sa_restorer; - } else { - - if (__put_user((ka->sa.sa_flags & SA_SIGINFO)?SWI_SYS_RT_SIGRETURN:SWI_SYS_SIGRETURN, rc)) - return 1; - - retcode = ((unsigned long)rc); - } - - regs->ARM_r0 = usig; - regs->ARM_sp = (unsigned long)frame; - regs->ARM_lr = retcode; - regs->ARM_pc = handler & ~3; - - return 0; -} - -static int -setup_frame(int usig, struct k_sigaction *ka, sigset_t *set, struct pt_regs *regs) -{ - struct sigframe *frame = get_sigframe(ka, regs, sizeof(*frame)); - int err = 0; - - if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - return 1; - - err |= setup_sigcontext(&frame->sc, /*&frame->fpstate,*/ regs, set->sig[0]); - - if (_NSIG_WORDS > 1) { - err |= __copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask)); - } - - if (err == 0) - err = setup_return(regs, ka, &frame->retcode, frame, usig); - - return err; -} - -static int -setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) -{ - struct rt_sigframe *frame = get_sigframe(ka, regs, sizeof(*frame)); - int err = 0; - - if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame))) - return 1; - - __put_user_error(&frame->info, &frame->pinfo, err); - __put_user_error(&frame->uc, &frame->puc, err); - err |= copy_siginfo_to_user(&frame->info, info); - - /* Clear all the bits of the ucontext we don't use. */ - err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext)); - - err |= setup_sigcontext(&frame->uc.uc_mcontext, /*&frame->fpstate,*/ - regs, set->sig[0]); - err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); - - if (err == 0) - err = setup_return(regs, ka, &frame->retcode, frame, usig); - - if (err == 0) { - /* - * For realtime signals we must also set the second and third - * arguments for the signal handler. - * -- Peter Maydell <pmaydell@chiark.greenend.org.uk> 2000-12-06 - */ - regs->ARM_r1 = (unsigned long)frame->pinfo; - regs->ARM_r2 = (unsigned long)frame->puc; - } - - return err; -} - -static inline void restart_syscall(struct pt_regs *regs) -{ - regs->ARM_r0 = regs->ARM_ORIG_r0; - regs->ARM_pc -= 4; -} - -/* - * OK, we're invoking a handler - */ -static void -handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset, - struct pt_regs * regs, int syscall) -{ - struct thread_info *thread = current_thread_info(); - struct task_struct *tsk = current; - struct k_sigaction *ka = &tsk->sighand->action[sig-1]; - int usig = sig; - int ret; - - /* - * If we were from a system call, check for system call restarting... - */ - if (syscall) { - switch (regs->ARM_r0) { - case -ERESTART_RESTARTBLOCK: - current_thread_info()->restart_block.fn = - do_no_restart_syscall; - case -ERESTARTNOHAND: - regs->ARM_r0 = -EINTR; - break; - case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { - regs->ARM_r0 = -EINTR; - break; - } - /* fallthrough */ - case -ERESTARTNOINTR: - restart_syscall(regs); - } - } - - /* - * translate the signal - */ - if (usig < 32 && thread->exec_domain && thread->exec_domain->signal_invmap) - usig = thread->exec_domain->signal_invmap[usig]; - - /* - * Set up the stack frame - */ - if (ka->sa.sa_flags & SA_SIGINFO) - ret = setup_rt_frame(usig, ka, info, oldset, regs); - else - ret = setup_frame(usig, ka, oldset, regs); - - /* - * Check that the resulting registers are actually sane. - */ - ret |= !valid_user_regs(regs); - - if (ret == 0) { - if (ka->sa.sa_flags & SA_ONESHOT) - ka->sa.sa_handler = SIG_DFL; - - spin_lock_irq(&tsk->sighand->siglock); - sigorsets(&tsk->blocked, &tsk->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(&tsk->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(&tsk->sighand->siglock); - return; - } - - force_sigsegv(sig, tsk); -} - -/* - * Note that 'init' is a special process: it doesn't get signals it doesn't - * want to handle. Thus you cannot kill init even with a SIGKILL even by - * mistake. - * - * Note that we go through the signals twice: once to check the signals that - * the kernel can handle, and then we build all the user-level signal handling - * stack-frames in one go after that. - */ -static int do_signal(sigset_t *oldset, struct pt_regs *regs, int syscall) -{ - siginfo_t info; - int signr; - struct k_sigaction ka; - - /* - * We want the common case to go fast, which - * is why we may in certain cases get here from - * kernel mode. Just return without doing anything - * if so. - */ - if (!user_mode(regs)) - return 0; - - if (current->ptrace & PT_SINGLESTEP) - ptrace_cancel_bpt(current); - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - handle_signal(signr, &info, oldset, regs, syscall); - if (current->ptrace & PT_SINGLESTEP) - ptrace_set_bpt(current); - return 1; - } - - /* - * No signal to deliver to the process - restart the syscall. - */ - if (syscall) { - if (regs->ARM_r0 == -ERESTART_RESTARTBLOCK) { - u32 *usp; - - regs->ARM_sp -= 12; - usp = (u32 *)regs->ARM_sp; - - put_user(regs->ARM_pc, &usp[0]); - /* swi __NR_restart_syscall */ - put_user(0xef000000 | __NR_restart_syscall, &usp[1]); - /* ldr pc, [sp], #12 */ -// FIXME!!! is #12 correct there? - put_user(0xe49df00c, &usp[2]); - - regs->ARM_pc = regs->ARM_sp + 4; - } - if (regs->ARM_r0 == -ERESTARTNOHAND || - regs->ARM_r0 == -ERESTARTSYS || - regs->ARM_r0 == -ERESTARTNOINTR) { - restart_syscall(regs); - } - } - if (current->ptrace & PT_SINGLESTEP) - ptrace_set_bpt(current); - return 0; -} - -asmlinkage void -do_notify_resume(struct pt_regs *regs, unsigned int thread_flags, int syscall) -{ - if (thread_flags & _TIF_SIGPENDING) - do_signal(¤t->blocked, regs, syscall); -} diff --git a/arch/arm26/kernel/sys_arm.c b/arch/arm26/kernel/sys_arm.c deleted file mode 100644 index dc05aba58ba..00000000000 --- a/arch/arm26/kernel/sys_arm.c +++ /dev/null @@ -1,323 +0,0 @@ -/* - * linux/arch/arm26/kernel/sys_arm.c - * - * Copyright (C) People who wrote linux/arch/i386/kernel/sys_i386.c - * Copyright (C) 1995, 1996 Russell King. - * Copyright (C) 2003 Ian Molton. - * - * 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. - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/arm - * platform. - */ -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/syscalls.h> -#include <linux/mman.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/utsname.h> - -#include <asm/uaccess.h> -#include <asm/ipc.h> - -extern unsigned long do_mremap(unsigned long addr, unsigned long old_len, - unsigned long new_len, unsigned long flags, - unsigned long new_addr); - -/* - * sys_pipe() is the normal C calling standard for creating - * a pipe. It's not the way unix traditionally does this, though. - */ -asmlinkage int sys_pipe(unsigned long * fildes) -{ - int fd[2]; - int error; - - error = do_pipe(fd); - if (!error) { - if (copy_to_user(fildes, fd, 2*sizeof(int))) - error = -EFAULT; - } - return error; -} - -/* common code for old and new mmaps */ -inline long do_mmap2( - unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - int error = -EINVAL; - struct file * file = NULL; - - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - - /* - * If we are doing a fixed mapping, and address < FIRST_USER_ADDRESS, - * then deny it. - */ - if (flags & MAP_FIXED && addr < FIRST_USER_ADDRESS) - goto out; - - error = -EBADF; - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - - down_write(¤t->mm->mmap_sem); - error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); - up_write(¤t->mm->mmap_sem); - - if (file) - fput(file); -out: - return error; -} - -struct mmap_arg_struct { - unsigned long addr; - unsigned long len; - unsigned long prot; - unsigned long flags; - unsigned long fd; - unsigned long offset; -}; - -asmlinkage int old_mmap(struct mmap_arg_struct *arg) -{ - int error = -EFAULT; - struct mmap_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - goto out; - - error = -EINVAL; - if (a.offset & ~PAGE_MASK) - goto out; - - error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); -out: - return error; -} - -asmlinkage unsigned long -sys_arm_mremap(unsigned long addr, unsigned long old_len, - unsigned long new_len, unsigned long flags, - unsigned long new_addr) -{ - unsigned long ret = -EINVAL; - - /* - * If we are doing a fixed mapping, and address < FIRST_USER_ADDRESS, - * then deny it. - */ - if (flags & MREMAP_FIXED && new_addr < FIRST_USER_ADDRESS) - goto out; - - down_write(¤t->mm->mmap_sem); - ret = do_mremap(addr, old_len, new_len, flags, new_addr); - up_write(¤t->mm->mmap_sem); - -out: - return ret; -} - -/* - * Perform the select(nd, in, out, ex, tv) and mmap() system - * calls. - */ - -struct sel_arg_struct { - unsigned long n; - fd_set *inp, *outp, *exp; - struct timeval *tvp; -}; - -asmlinkage int old_select(struct sel_arg_struct *arg) -{ - struct sel_arg_struct a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - /* sys_select() does the appropriate kernel locking */ - return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); -} - -/* - * sys_ipc() is the de-multiplexer for the SysV IPC calls.. - * - * This is really horribly ugly. - */ -asmlinkage int sys_ipc (uint call, int first, int second, int third, void *ptr, long fifth) -{ - int version, ret; - - version = call >> 16; /* hack for backward compatibility */ - call &= 0xffff; - - switch (call) { - case SEMOP: - return sys_semop (first, (struct sembuf *)ptr, second); - case SEMGET: - return sys_semget (first, second, third); - case SEMCTL: { - union semun fourth; - if (!ptr) - return -EINVAL; - if (get_user(fourth.__pad, (void **) ptr)) - return -EFAULT; - return sys_semctl (first, second, third, fourth); - } - - case MSGSND: - return sys_msgsnd (first, (struct msgbuf *) ptr, - second, third); - case MSGRCV: - switch (version) { - case 0: { - struct ipc_kludge tmp; - if (!ptr) - return -EINVAL; - if (copy_from_user(&tmp,(struct ipc_kludge *) ptr, - sizeof (tmp))) - return -EFAULT; - return sys_msgrcv (first, tmp.msgp, second, - tmp.msgtyp, third); - } - default: - return sys_msgrcv (first, - (struct msgbuf *) ptr, - second, fifth, third); - } - case MSGGET: - return sys_msgget ((key_t) first, second); - case MSGCTL: - return sys_msgctl (first, second, (struct msqid_ds *) ptr); - - case SHMAT: - switch (version) { - default: { - ulong raddr; - ret = do_shmat (first, (char *) ptr, second, &raddr); - if (ret) - return ret; - return put_user (raddr, (ulong *) third); - } - case 1: /* iBCS2 emulator entry point */ - if (!segment_eq(get_fs(), get_ds())) - return -EINVAL; - return do_shmat (first, (char *) ptr, - second, (ulong *) third); - } - case SHMDT: - return sys_shmdt ((char *)ptr); - case SHMGET: - return sys_shmget (first, second, third); - case SHMCTL: - return sys_shmctl (first, second, - (struct shmid_ds *) ptr); - default: - return -EINVAL; - } -} - -/* Fork a new task - this creates a new program thread. - * This is called indirectly via a small wrapper - */ -asmlinkage int sys_fork(struct pt_regs *regs) -{ - return do_fork(SIGCHLD, regs->ARM_sp, regs, 0, NULL, NULL); -} - -/* Clone a task - this clones the calling program thread. - * This is called indirectly via a small wrapper - */ -asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp, struct pt_regs *regs) -{ - /* - * We don't support SETTID / CLEARTID (FIXME!!! (nicked from arm32)) - */ - if (clone_flags & (CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID)) - return -EINVAL; - - if (!newsp) - newsp = regs->ARM_sp; - - return do_fork(clone_flags, newsp, regs, 0, NULL, NULL); -} - -asmlinkage int sys_vfork(struct pt_regs *regs) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs->ARM_sp, regs, 0, NULL, NULL); -} - -/* sys_execve() executes a new program. - * This is called indirectly via a small wrapper - */ -asmlinkage int sys_execve(char *filenamei, char **argv, char **envp, struct pt_regs *regs) -{ - int error; - char * filename; - - filename = getname(filenamei); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - goto out; - error = do_execve(filename, argv, envp, regs); - putname(filename); -out: - return error; -} - -/* FIXME - see if this is correct for arm26 */ -int kernel_execve(const char *filename, char *const argv[], char *const envp[]) -{ - struct pt_regs regs; - int ret; - memset(®s, 0, sizeof(struct pt_regs)); - ret = do_execve((char *)filename, (char __user * __user *)argv, (char __user * __user *)envp, ®s); - if (ret < 0) - goto out; - - /* - * Save argc to the register structure for userspace. - */ - regs.ARM_r0 = ret; - - /* - * We were successful. We won't be returning to our caller, but - * instead to user space by manipulating the kernel stack. - */ - asm( "add r0, %0, %1\n\t" - "mov r1, %2\n\t" - "mov r2, %3\n\t" - "bl memmove\n\t" /* copy regs to top of stack */ - "mov r8, #0\n\t" /* not a syscall */ - "mov r9, %0\n\t" /* thread structure */ - "mov sp, r0\n\t" /* reposition stack pointer */ - "b ret_to_user" - : - : "r" (current_thread_info()), - "Ir" (THREAD_SIZE - 8 - sizeof(regs)), - "r" (®s), - "Ir" (sizeof(regs)) - : "r0", "r1", "r2", "r3", "ip", "memory"); - - out: - return ret; -} - -EXPORT_SYMBOL(kernel_execve); diff --git a/arch/arm26/kernel/time.c b/arch/arm26/kernel/time.c deleted file mode 100644 index 0f1d57fbd3d..00000000000 --- a/arch/arm26/kernel/time.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * linux/arch/arm26/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * Modifications for ARM (C) 1994-2001 Russell King - * Mods for ARM26 (C) 2003 Ian Molton - * - * 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. - * - * This file contains the ARM-specific time handling details: - * reading the RTC at bootup, etc... - * - * 1994-07-02 Alan Modra - * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime - * 1998-12-20 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/time.h> -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/timex.h> -#include <linux/errno.h> -#include <linux/profile.h> - -#include <asm/hardware.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/ioc.h> - -/* this needs a better home */ -DEFINE_SPINLOCK(rtc_lock); - -/* change this if you have some constant time drift */ -#define USECS_PER_JIFFY (1000000/HZ) - -static int dummy_set_rtc(void) -{ - return 0; -} - -/* - * hook for setting the RTC's idea of the current time. - */ -int (*set_rtc)(void) = dummy_set_rtc; - -/* - * Get time offset based on IOCs timer. - * FIXME - if this is called with interrutps off, why the shennanigans - * below ? - */ -static unsigned long gettimeoffset(void) -{ - unsigned int count1, count2, status; - long offset; - - ioc_writeb (0, IOC_T0LATCH); - barrier (); - count1 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); - barrier (); - status = ioc_readb(IOC_IRQREQA); - barrier (); - ioc_writeb (0, IOC_T0LATCH); - barrier (); - count2 = ioc_readb(IOC_T0CNTL) | (ioc_readb(IOC_T0CNTH) << 8); - - offset = count2; - if (count2 < count1) { - /* - * We have not had an interrupt between reading count1 - * and count2. - */ - if (status & (1 << 5)) - offset -= LATCH; - } else if (count2 > count1) { - /* - * We have just had another interrupt between reading - * count1 and count2. - */ - offset -= LATCH; - } - - offset = (LATCH - offset) * (tick_nsec / 1000); - return (offset + LATCH/2) / LATCH; -} - -static unsigned long next_rtc_update; - -/* - * If we have an externally synchronized linux clock, then update - * CMOS clock accordingly every ~11 minutes. set_rtc() has to be - * called as close as possible to 500 ms before the new second - * starts. - */ -static inline void do_set_rtc(void) -{ - if (!ntp_synced() || set_rtc == NULL) - return; - -//FIXME - timespec.tv_sec is a time_t not unsigned long - if (next_rtc_update && - time_before((unsigned long)xtime.tv_sec, next_rtc_update)) - return; - - if (xtime.tv_nsec < 500000000 - ((unsigned) tick_nsec >> 1) && - xtime.tv_nsec >= 500000000 + ((unsigned) tick_nsec >> 1)) - return; - - if (set_rtc()) - /* - * rtc update failed. Try again in 60s - */ - next_rtc_update = xtime.tv_sec + 60; - else - next_rtc_update = xtime.tv_sec + 660; -} - -#define do_leds() - -void do_gettimeofday(struct timeval *tv) -{ - unsigned long flags; - unsigned long seq; - unsigned long usec, sec; - - do { - seq = read_seqbegin_irqsave(&xtime_lock, flags); - usec = gettimeoffset(); - sec = xtime.tv_sec; - usec += xtime.tv_nsec / 1000; - } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); - - /* usec may have gone up a lot: be safe */ - while (usec >= 1000000) { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; -} - -EXPORT_SYMBOL(do_gettimeofday); - -int do_settimeofday(struct timespec *tv) -{ - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) - return -EINVAL; - - write_seqlock_irq(&xtime_lock); - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * done, and then undo it! - */ - tv->tv_nsec -= 1000 * gettimeoffset(); - - while (tv->tv_nsec < 0) { - tv->tv_nsec += NSEC_PER_SEC; - tv->tv_sec--; - } - - xtime.tv_sec = tv->tv_sec; - xtime.tv_nsec = tv->tv_nsec; - ntp_clear(); - write_sequnlock_irq(&xtime_lock); - clock_was_set(); - return 0; -} - -EXPORT_SYMBOL(do_settimeofday); - -static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - do_timer(1); -#ifndef CONFIG_SMP - update_process_times(user_mode(regs)); -#endif - do_set_rtc(); //FIME - EVERY timer IRQ? - profile_tick(CPU_PROFILING, regs); - return IRQ_HANDLED; //FIXME - is this right? -} - -static struct irqaction timer_irq = { - .name = "timer", - .flags = IRQF_DISABLED, - .handler = timer_interrupt, -}; - -extern void ioctime_init(void); - -/* - * Set up timer interrupt. - */ -void __init time_init(void) -{ - ioc_writeb(LATCH & 255, IOC_T0LTCHL); - ioc_writeb(LATCH >> 8, IOC_T0LTCHH); - ioc_writeb(0, IOC_T0GO); - - - setup_irq(IRQ_TIMER, &timer_irq); -} - diff --git a/arch/arm26/kernel/traps.c b/arch/arm26/kernel/traps.c deleted file mode 100644 index 2911e2eae80..00000000000 --- a/arch/arm26/kernel/traps.c +++ /dev/null @@ -1,548 +0,0 @@ -/* - * linux/arch/arm26/kernel/traps.c - * - * Copyright (C) 1995-2002 Russell King - * Fragments that appear the same as linux/arch/i386/kernel/traps.c (C) Linus Torvalds - * Copyright (C) 2003 Ian Molton (ARM26) - * - * 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. - * - * 'traps.c' handles hardware exceptions after we have saved some state in - * 'linux/arch/arm26/lib/traps.S'. Mostly a debugging aid, but will probably - * kill the offending process. - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/spinlock.h> -#include <linux/personality.h> -#include <linux/ptrace.h> -#include <linux/elf.h> -#include <linux/interrupt.h> -#include <linux/init.h> - -#include <asm/atomic.h> -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/uaccess.h> -#include <asm/unistd.h> -#include <linux/mutex.h> - -#include "ptrace.h" - -extern void c_backtrace (unsigned long fp, int pmode); -extern void show_pte(struct mm_struct *mm, unsigned long addr); - -const char *processor_modes[] = { "USER_26", "FIQ_26" , "IRQ_26" , "SVC_26" }; - -static const char *handler[]= { "prefetch abort", "data abort", "address exception", "interrupt" "*bad reason*"}; - -/* - * Stack pointers should always be within the kernels view of - * physical memory. If it is not there, then we can't dump - * out any information relating to the stack. - */ -static int verify_stack(unsigned long sp) -{ - if (sp < PAGE_OFFSET || (sp > (unsigned long)high_memory && high_memory != 0)) - return -EFAULT; - - return 0; -} - -/* - * Dump out the contents of some memory nicely... - */ -static void dump_mem(const char *str, unsigned long bottom, unsigned long top) -{ - unsigned long p = bottom & ~31; - mm_segment_t fs; - int i; - - /* - * We need to switch to kernel mode so that we can use __get_user - * to safely read from kernel space. Note that we now dump the - * code first, just in case the backtrace kills us. - */ - fs = get_fs(); - set_fs(KERNEL_DS); - - printk("%s", str); - printk("(0x%08lx to 0x%08lx)\n", bottom, top); - - for (p = bottom & ~31; p < top;) { - printk("%04lx: ", p & 0xffff); - - for (i = 0; i < 8; i++, p += 4) { - unsigned int val; - - if (p < bottom || p >= top) - printk(" "); - else { - __get_user(val, (unsigned long *)p); - printk("%08x ", val); - } - } - printk ("\n"); - } - - set_fs(fs); -} - -static void dump_instr(struct pt_regs *regs) -{ - unsigned long addr = instruction_pointer(regs); - const int width = 8; - mm_segment_t fs; - int i; - - /* - * We need to switch to kernel mode so that we can use __get_user - * to safely read from kernel space. Note that we now dump the - * code first, just in case the backtrace kills us. - */ - fs = get_fs(); - set_fs(KERNEL_DS); - - printk("Code: "); - for (i = -4; i < 1; i++) { - unsigned int val, bad; - - bad = __get_user(val, &((u32 *)addr)[i]); - - if (!bad) - printk(i == 0 ? "(%0*x) " : "%0*x ", width, val); - else { - printk("bad PC value."); - break; - } - } - printk("\n"); - - set_fs(fs); -} - -/*static*/ void __dump_stack(struct task_struct *tsk, unsigned long sp) -{ - dump_mem("Stack: ", sp, 8192+(unsigned long)task_stack_page(tsk)); -} - -void dump_stack(void) -{ -#ifdef CONFIG_DEBUG_ERRORS - __backtrace(); -#endif -} - -EXPORT_SYMBOL(dump_stack); - -//FIXME - was a static fn -void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk) -{ - unsigned int fp; - int ok = 1; - - printk("Backtrace: "); - fp = regs->ARM_fp; - if (!fp) { - printk("no frame pointer"); - ok = 0; - } else if (verify_stack(fp)) { - printk("invalid frame pointer 0x%08x", fp); - ok = 0; - } else if (fp < (unsigned long)end_of_stack(tsk)) - printk("frame pointer underflow"); - printk("\n"); - - if (ok) - c_backtrace(fp, processor_mode(regs)); -} - -/* FIXME - this is probably wrong.. */ -void show_stack(struct task_struct *task, unsigned long *sp) { - dump_mem("Stack: ", (unsigned long)sp, 8192+(unsigned long)task_stack_page(task)); -} - -DEFINE_SPINLOCK(die_lock); - -/* - * This function is protected against re-entrancy. - */ -NORET_TYPE void die(const char *str, struct pt_regs *regs, int err) -{ - struct task_struct *tsk = current; - - console_verbose(); - spin_lock_irq(&die_lock); - - printk("Internal error: %s: %x\n", str, err); - printk("CPU: %d\n", smp_processor_id()); - show_regs(regs); - add_taint(TAINT_DIE); - printk("Process %s (pid: %d, stack limit = 0x%p)\n", - current->comm, current->pid, end_of_stack(tsk)); - - if (!user_mode(regs) || in_interrupt()) { - __dump_stack(tsk, (unsigned long)(regs + 1)); - dump_backtrace(regs, tsk); - dump_instr(regs); - } -while(1); - spin_unlock_irq(&die_lock); - do_exit(SIGSEGV); -} - -void die_if_kernel(const char *str, struct pt_regs *regs, int err) -{ - if (user_mode(regs)) - return; - - die(str, regs, err); -} - -static DEFINE_MUTEX(undef_mutex); -static int (*undef_hook)(struct pt_regs *); - -int request_undef_hook(int (*fn)(struct pt_regs *)) -{ - int ret = -EBUSY; - - mutex_lock(&undef_mutex); - if (undef_hook == NULL) { - undef_hook = fn; - ret = 0; - } - mutex_unlock(&undef_mutex); - - return ret; -} - -int release_undef_hook(int (*fn)(struct pt_regs *)) -{ - int ret = -EINVAL; - - mutex_lock(&undef_mutex); - if (undef_hook == fn) { - undef_hook = NULL; - ret = 0; - } - mutex_unlock(&undef_mutex); - - return ret; -} - -static int undefined_extension(struct pt_regs *regs, unsigned int op) -{ - switch (op) { - case 1: /* 0xde01 / 0x?7f001f0 */ - ptrace_break(current, regs); - return 0; - } - return 1; -} - -asmlinkage void do_undefinstr(struct pt_regs *regs) -{ - siginfo_t info; - void *pc; - - regs->ARM_pc -= 4; - - pc = (unsigned long *)instruction_pointer(regs); /* strip PSR */ - - if (user_mode(regs)) { - u32 instr; - - get_user(instr, (u32 *)pc); - - if ((instr & 0x0fff00ff) == 0x07f000f0 && - undefined_extension(regs, (instr >> 8) & 255) == 0) { - regs->ARM_pc += 4; - return; - } - } else { - if (undef_hook && undef_hook(regs) == 0) { - regs->ARM_pc += 4; - return; - } - } - -#ifdef CONFIG_DEBUG_USER - printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n", - current->comm, current->pid, pc); - dump_instr(regs); -#endif - - current->thread.error_code = 0; - current->thread.trap_no = 6; - - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLOPC; - info.si_addr = pc; - - force_sig_info(SIGILL, &info, current); - - die_if_kernel("Oops - undefined instruction", regs, 0); -} - -asmlinkage void do_excpt(unsigned long address, struct pt_regs *regs, int mode) -{ - siginfo_t info; - -#ifdef CONFIG_DEBUG_USER - printk(KERN_INFO "%s (%d): address exception: pc=%08lx\n", - current->comm, current->pid, instruction_pointer(regs)); - dump_instr(regs); -#endif - - current->thread.error_code = 0; - current->thread.trap_no = 11; - - info.si_signo = SIGBUS; - info.si_errno = 0; - info.si_code = BUS_ADRERR; - info.si_addr = (void *)address; - - force_sig_info(SIGBUS, &info, current); - - die_if_kernel("Oops - address exception", regs, mode); -} - -asmlinkage void do_unexp_fiq (struct pt_regs *regs) -{ -#ifndef CONFIG_IGNORE_FIQ - printk("Hmm. Unexpected FIQ received, but trying to continue\n"); - printk("You may have a hardware problem...\n"); -#endif -} - -/* - * bad_mode handles the impossible case in the vectors. If you see one of - * these, then it's extremely serious, and could mean you have buggy hardware. - * It never returns, and never tries to sync. We hope that we can at least - * dump out some state information... - */ -asmlinkage void bad_mode(struct pt_regs *regs, int reason, int proc_mode) -{ - unsigned int vectors = vectors_base(); - - console_verbose(); - - printk(KERN_CRIT "Bad mode in %s handler detected: mode %s\n", - handler[reason<5?reason:4], processor_modes[proc_mode]); - - /* - * Dump out the vectors and stub routines. Maybe a better solution - * would be to dump them out only if we detect that they are corrupted. - */ - dump_mem(KERN_CRIT "Vectors: ", vectors, vectors + 0x40); - dump_mem(KERN_CRIT "Stubs: ", vectors + 0x200, vectors + 0x4b8); - - die("Oops", regs, 0); - local_irq_disable(); - panic("bad mode"); -} - -static int bad_syscall(int n, struct pt_regs *regs) -{ - struct thread_info *thread = current_thread_info(); - siginfo_t info; - - if (current->personality != PER_LINUX && thread->exec_domain->handler) { - thread->exec_domain->handler(n, regs); - return regs->ARM_r0; - } - -#ifdef CONFIG_DEBUG_USER - printk(KERN_ERR "[%d] %s: obsolete system call %08x.\n", - current->pid, current->comm, n); - dump_instr(regs); -#endif - - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLTRP; - info.si_addr = (void *)instruction_pointer(regs) - 4; - - force_sig_info(SIGILL, &info, current); - die_if_kernel("Oops", regs, n); - return regs->ARM_r0; -} - -static inline void -do_cache_op(unsigned long start, unsigned long end, int flags) -{ - struct vm_area_struct *vma; - - if (end < start) - return; - - vma = find_vma(current->active_mm, start); - if (vma && vma->vm_start < end) { - if (start < vma->vm_start) - start = vma->vm_start; - if (end > vma->vm_end) - end = vma->vm_end; - } -} - -/* - * Handle all unrecognised system calls. - * 0x9f0000 - 0x9fffff are some more esoteric system calls - */ -#define NR(x) ((__ARM_NR_##x) - __ARM_NR_BASE) -asmlinkage int arm_syscall(int no, struct pt_regs *regs) -{ - siginfo_t info; - - if ((no >> 16) != 0x9f) - return bad_syscall(no, regs); - - switch (no & 0xffff) { - case 0: /* branch through 0 */ - info.si_signo = SIGSEGV; - info.si_errno = 0; - info.si_code = SEGV_MAPERR; - info.si_addr = NULL; - - force_sig_info(SIGSEGV, &info, current); - - die_if_kernel("branch through zero", regs, 0); - return 0; - - case NR(breakpoint): /* SWI BREAK_POINT */ - ptrace_break(current, regs); - return regs->ARM_r0; - - case NR(cacheflush): - return 0; - - case NR(usr26): - break; - - default: - /* Calls 9f00xx..9f07ff are defined to return -ENOSYS - if not implemented, rather than raising SIGILL. This - way the calling program can gracefully determine whether - a feature is supported. */ - if (no <= 0x7ff) - return -ENOSYS; - break; - } -#ifdef CONFIG_DEBUG_USER - /* - * experience shows that these seem to indicate that - * something catastrophic has happened - */ - printk("[%d] %s: arm syscall %d\n", current->pid, current->comm, no); - dump_instr(regs); - if (user_mode(regs)) { - show_regs(regs); - c_backtrace(regs->ARM_fp, processor_mode(regs)); - } -#endif - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLTRP; - info.si_addr = (void *)instruction_pointer(regs) - 4; - - force_sig_info(SIGILL, &info, current); - die_if_kernel("Oops", regs, no); - return 0; -} - -void __bad_xchg(volatile void *ptr, int size) -{ - printk("xchg: bad data size: pc 0x%p, ptr 0x%p, size %d\n", - __builtin_return_address(0), ptr, size); - BUG(); -} - -/* - * A data abort trap was taken, but we did not handle the instruction. - * Try to abort the user program, or panic if it was the kernel. - */ -asmlinkage void -baddataabort(int code, unsigned long instr, struct pt_regs *regs) -{ - unsigned long addr = instruction_pointer(regs); - siginfo_t info; - -#ifdef CONFIG_DEBUG_USER - printk(KERN_ERR "[%d] %s: bad data abort: code %d instr 0x%08lx\n", - current->pid, current->comm, code, instr); - dump_instr(regs); - show_pte(current->mm, addr); -#endif - - info.si_signo = SIGILL; - info.si_errno = 0; - info.si_code = ILL_ILLOPC; - info.si_addr = (void *)addr; - - force_sig_info(SIGILL, &info, current); - die_if_kernel("unknown data abort code", regs, instr); -} - -volatile void __bug(const char *file, int line, void *data) -{ - printk(KERN_CRIT"kernel BUG at %s:%d!", file, line); - if (data) - printk(KERN_CRIT" - extra data = %p", data); - printk("\n"); - *(int *)0 = 0; -} - -void __readwrite_bug(const char *fn) -{ - printk("%s called, but not implemented", fn); - BUG(); -} - -void __pte_error(const char *file, int line, unsigned long val) -{ - printk("%s:%d: bad pte %08lx.\n", file, line, val); -} - -void __pmd_error(const char *file, int line, unsigned long val) -{ - printk("%s:%d: bad pmd %08lx.\n", file, line, val); -} - -void __pgd_error(const char *file, int line, unsigned long val) -{ - printk("%s:%d: bad pgd %08lx.\n", file, line, val); -} - -asmlinkage void __div0(void) -{ - printk("Division by zero in kernel.\n"); - dump_stack(); -} - -void abort(void) -{ - BUG(); - - /* if that doesn't kill us, halt */ - panic("Oops failed to kill thread"); -} - -void __init trap_init(void) -{ - extern void __trap_init(unsigned long); - unsigned long base = vectors_base(); - - __trap_init(base); - if (base != 0) - printk(KERN_DEBUG "Relocating machine vectors to 0x%08lx\n", - base); -} diff --git a/arch/arm26/kernel/vmlinux-arm26-xip.lds.in b/arch/arm26/kernel/vmlinux-arm26-xip.lds.in deleted file mode 100644 index 4ec715c25de..00000000000 --- a/arch/arm26/kernel/vmlinux-arm26-xip.lds.in +++ /dev/null @@ -1,136 +0,0 @@ -/* ld script to make ARM Linux kernel - * taken from the i386 version by Russell King - * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> - * borrowed from Russels ARM port by Ian Molton - */ - -#include <asm-generic/vmlinux.lds.h> - -OUTPUT_ARCH(arm) -ENTRY(stext) -jiffies = jiffies_64; -SECTIONS -{ - . = TEXTADDR; - .init : { /* Init code and data */ - _stext = .; - __init_begin = .; - _sinittext = .; - *(.init.text) - _einittext = .; - __proc_info_begin = .; - *(.proc.info) - __proc_info_end = .; - __arch_info_begin = .; - *(.arch.info) - __arch_info_end = .; - __tagtable_begin = .; - *(.taglist) - __tagtable_end = .; - . = ALIGN(16); - __setup_start = .; - *(.init.setup) - __setup_end = .; - __early_begin = .; - *(__early_param) - __early_end = .; - __initcall_start = .; - *(.initcall1.init) - *(.initcall2.init) - *(.initcall3.init) - *(.initcall4.init) - *(.initcall5.init) - *(.initcall6.init) - *(.initcall7.init) - __initcall_end = .; - __con_initcall_start = .; - *(.con_initcall.init) - __con_initcall_end = .; -#ifdef CONFIG_BLK_DEV_INITRD - . = ALIGN(32); - __initramfs_start = .; - usr/built-in.o(.init.ramfs) - __initramfs_end = .; -#endif - . = ALIGN(32768); - __init_end = .; - } - - /DISCARD/ : { /* Exit code and data */ - *(.exit.text) - *(.exit.data) - *(.exitcall.exit) - } - - .text : { /* Real text segment */ - _text = .; /* Text and read-only data */ - TEXT_TEXT - SCHED_TEXT - LOCK_TEXT /* FIXME - borrowed from arm32 - check*/ - *(.fixup) - *(.gnu.warning) - *(.rodata) - *(.rodata.*) - *(.glue_7) - *(.glue_7t) - *(.got) /* Global offset table */ - - _etext = .; /* End of text section */ - } - - . = ALIGN(16); - __ex_table : { /* Exception table */ - __start___ex_table = .; - *(__ex_table) - __stop___ex_table = .; - } - - RODATA - - _endtext = .; - - . = DATAADDR; - - _sdata = .; - - .data : { - . = ALIGN(8192); - /* - * first, the init thread union, aligned - * to an 8192 byte boundary. (see arm26/kernel/init_task.c) - * FIXME - sould this be 32K aligned on arm26? - */ - *(.init.task) - - /* - * The cacheline aligned data - */ - . = ALIGN(32); - *(.data.cacheline_aligned) - - /* - * and the usual data section - */ - DATA_DATA - CONSTRUCTORS - - *(.init.data) - - _edata = .; - } - - .bss : { - __bss_start = .; /* BSS */ - *(.bss) - *(COMMON) - _end = . ; - } - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } -} diff --git a/arch/arm26/kernel/vmlinux-arm26.lds.in b/arch/arm26/kernel/vmlinux-arm26.lds.in deleted file mode 100644 index 6c44f6a17bf..00000000000 --- a/arch/arm26/kernel/vmlinux-arm26.lds.in +++ /dev/null @@ -1,129 +0,0 @@ -/* ld script to make ARM Linux kernel - * taken from the i386 version by Russell King - * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> - * borrowed from Russels ARM port by Ian Molton and subsequently modified. - */ - -#include <asm-generic/vmlinux.lds.h> - -OUTPUT_ARCH(arm) -ENTRY(stext) -jiffies = jiffies_64; -SECTIONS -{ - . = TEXTADDR; - .init : { /* Init code and data */ - _stext = .; - __init_begin = .; - _sinittext = .; - *(.init.text) - _einittext = .; - __proc_info_begin = .; - *(.proc.info) - __proc_info_end = .; - __arch_info_begin = .; - *(.arch.info) - __arch_info_end = .; - __tagtable_begin = .; - *(.taglist) - __tagtable_end = .; - *(.init.data) - . = ALIGN(16); - __setup_start = .; - *(.init.setup) - __setup_end = .; - __early_begin = .; - *(__early_param) - __early_end = .; - __initcall_start = .; - *(.initcall1.init) - *(.initcall2.init) - *(.initcall3.init) - *(.initcall4.init) - *(.initcall5.init) - *(.initcall6.init) - *(.initcall7.init) - __initcall_end = .; - __con_initcall_start = .; - *(.con_initcall.init) - __con_initcall_end = .; -#ifdef CONFIG_BLK_DEV_INITRD - . = ALIGN(32); - __initramfs_start = .; - usr/built-in.o(.init.ramfs) - __initramfs_end = .; -#endif - . = ALIGN(32768); - __init_end = .; - } - - /DISCARD/ : { /* Exit code and data */ - *(.exit.text) - *(.exit.data) - *(.exitcall.exit) - } - - .text : { /* Real text segment */ - _text = .; /* Text and read-only data */ - TEXT_TEXT - SCHED_TEXT - LOCK_TEXT - *(.fixup) - *(.gnu.warning) - *(.rodata) - *(.rodata.*) - *(.glue_7) - *(.glue_7t) - *(.got) /* Global offset table */ - - _etext = .; /* End of text section */ - } - - . = ALIGN(16); - __ex_table : { /* Exception table */ - __start___ex_table = .; - *(__ex_table) - __stop___ex_table = .; - } - - RODATA - - . = ALIGN(8192); - - .data : { - /* - * first, the init task union, aligned - * to an 8192 byte boundary. (see arm26/kernel/init_task.c) - */ - *(.init.task) - - /* - * The cacheline aligned data - */ - . = ALIGN(32); - *(.data.cacheline_aligned) - - /* - * and the usual data section - */ - DATA_DATA - CONSTRUCTORS - - _edata = .; - } - - .bss : { - __bss_start = .; /* BSS */ - *(.bss) - *(COMMON) - _end = . ; - } - /* Stabs debugging sections. */ - .stab 0 : { *(.stab) } - .stabstr 0 : { *(.stabstr) } - .stab.excl 0 : { *(.stab.excl) } - .stab.exclstr 0 : { *(.stab.exclstr) } - .stab.index 0 : { *(.stab.index) } - .stab.indexstr 0 : { *(.stab.indexstr) } - .comment 0 : { *(.comment) } -} diff --git a/arch/arm26/kernel/vmlinux.lds.S b/arch/arm26/kernel/vmlinux.lds.S deleted file mode 100644 index 1fa39f02e07..00000000000 --- a/arch/arm26/kernel/vmlinux.lds.S +++ /dev/null @@ -1,11 +0,0 @@ - -#ifdef CONFIG_XIP_KERNEL - -#include "vmlinux-arm26-xip.lds.in" - -#else - -#include "vmlinux-arm26.lds.in" - -#endif - |