diff options
Diffstat (limited to 'arch/m68knommu/kernel')
| -rw-r--r-- | arch/m68knommu/kernel/asm-offsets.c | 28 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/entry.S | 6 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/process.c | 5 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/ptrace.c | 18 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/setup.c | 92 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/sys_m68k.c | 38 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/syscalltable.S | 2 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/vmlinux.lds.S | 47 |
8 files changed, 140 insertions, 96 deletions
diff --git a/arch/m68knommu/kernel/asm-offsets.c b/arch/m68knommu/kernel/asm-offsets.c index 594ee0e657fe..9a8876f715d8 100644 --- a/arch/m68knommu/kernel/asm-offsets.c +++ b/arch/m68knommu/kernel/asm-offsets.c @@ -45,25 +45,25 @@ int main(void) DEFINE(THREAD_FPSTATE, offsetof(struct thread_struct, fpstate)); /* offsets into the pt_regs */ - DEFINE(PT_D0, offsetof(struct pt_regs, d0)); - DEFINE(PT_ORIG_D0, offsetof(struct pt_regs, orig_d0)); - DEFINE(PT_D1, offsetof(struct pt_regs, d1)); - DEFINE(PT_D2, offsetof(struct pt_regs, d2)); - DEFINE(PT_D3, offsetof(struct pt_regs, d3)); - DEFINE(PT_D4, offsetof(struct pt_regs, d4)); - DEFINE(PT_D5, offsetof(struct pt_regs, d5)); - DEFINE(PT_A0, offsetof(struct pt_regs, a0)); - DEFINE(PT_A1, offsetof(struct pt_regs, a1)); - DEFINE(PT_A2, offsetof(struct pt_regs, a2)); - DEFINE(PT_PC, offsetof(struct pt_regs, pc)); - DEFINE(PT_SR, offsetof(struct pt_regs, sr)); + DEFINE(PT_OFF_D0, offsetof(struct pt_regs, d0)); + DEFINE(PT_OFF_ORIG_D0, offsetof(struct pt_regs, orig_d0)); + DEFINE(PT_OFF_D1, offsetof(struct pt_regs, d1)); + DEFINE(PT_OFF_D2, offsetof(struct pt_regs, d2)); + DEFINE(PT_OFF_D3, offsetof(struct pt_regs, d3)); + DEFINE(PT_OFF_D4, offsetof(struct pt_regs, d4)); + DEFINE(PT_OFF_D5, offsetof(struct pt_regs, d5)); + DEFINE(PT_OFF_A0, offsetof(struct pt_regs, a0)); + DEFINE(PT_OFF_A1, offsetof(struct pt_regs, a1)); + DEFINE(PT_OFF_A2, offsetof(struct pt_regs, a2)); + DEFINE(PT_OFF_PC, offsetof(struct pt_regs, pc)); + DEFINE(PT_OFF_SR, offsetof(struct pt_regs, sr)); #ifdef CONFIG_COLDFIRE /* bitfields are a bit difficult */ - DEFINE(PT_FORMATVEC, offsetof(struct pt_regs, sr) - 2); + DEFINE(PT_OFF_FORMATVEC, offsetof(struct pt_regs, sr) - 2); #else /* bitfields are a bit difficult */ - DEFINE(PT_VECTOR, offsetof(struct pt_regs, pc) + 4); + DEFINE(PT_OFF_VECTOR, offsetof(struct pt_regs, pc) + 4); #endif /* signal defines */ diff --git a/arch/m68knommu/kernel/entry.S b/arch/m68knommu/kernel/entry.S index f56faa5c9cd9..56043ade3941 100644 --- a/arch/m68knommu/kernel/entry.S +++ b/arch/m68knommu/kernel/entry.S @@ -46,7 +46,7 @@ ENTRY(buserr) SAVE_ALL moveq #-1,%d0 - movel %d0,%sp@(PT_ORIG_D0) + movel %d0,%sp@(PT_OFF_ORIG_D0) movel %sp,%sp@- /* stack frame pointer argument */ jsr buserr_c addql #4,%sp @@ -55,7 +55,7 @@ ENTRY(buserr) ENTRY(trap) SAVE_ALL moveq #-1,%d0 - movel %d0,%sp@(PT_ORIG_D0) + movel %d0,%sp@(PT_OFF_ORIG_D0) movel %sp,%sp@- /* stack frame pointer argument */ jsr trap_c addql #4,%sp @@ -67,7 +67,7 @@ ENTRY(trap) ENTRY(dbginterrupt) SAVE_ALL moveq #-1,%d0 - movel %d0,%sp@(PT_ORIG_D0) + movel %d0,%sp@(PT_OFF_ORIG_D0) movel %sp,%sp@- /* stack frame pointer argument */ jsr dbginterrupt_c addql #4,%sp diff --git a/arch/m68knommu/kernel/process.c b/arch/m68knommu/kernel/process.c index 8f8f4abab2ff..5c9ecd427090 100644 --- a/arch/m68knommu/kernel/process.c +++ b/arch/m68knommu/kernel/process.c @@ -352,15 +352,12 @@ asmlinkage int sys_execve(char *name, char **argv, char **envp) char * filename; struct pt_regs *regs = (struct pt_regs *) &name; - lock_kernel(); filename = getname(name); error = PTR_ERR(filename); if (IS_ERR(filename)) - goto out; + return error; error = do_execve(filename, argv, envp, regs); putname(filename); -out: - unlock_kernel(); return error; } diff --git a/arch/m68knommu/kernel/ptrace.c b/arch/m68knommu/kernel/ptrace.c index ef70ca070ce2..4d3828959fb0 100644 --- a/arch/m68knommu/kernel/ptrace.c +++ b/arch/m68knommu/kernel/ptrace.c @@ -86,6 +86,20 @@ static inline int put_reg(struct task_struct *task, int regno, return 0; } +void user_enable_single_step(struct task_struct *task) +{ + unsigned long srflags; + srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16); + put_reg(task, PT_SR, srflags); +} + +void user_disable_single_step(struct task_struct *task) +{ + unsigned long srflags; + srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16); + put_reg(task, PT_SR, srflags); +} + /* * Called by kernel/ptrace.c when detaching.. * @@ -93,10 +107,8 @@ static inline int put_reg(struct task_struct *task, int regno, */ void ptrace_disable(struct task_struct *child) { - unsigned long tmp; /* make sure the single step bit is not set. */ - tmp = get_reg(child, PT_SR) & ~(TRACE_BITS << 16); - put_reg(child, PT_SR, tmp); + user_disable_single_step(child); } long arch_ptrace(struct task_struct *child, long request, long addr, long data) diff --git a/arch/m68knommu/kernel/setup.c b/arch/m68knommu/kernel/setup.c index 5c2bb3eeaaa2..ba92b90d5fbc 100644 --- a/arch/m68knommu/kernel/setup.c +++ b/arch/m68knommu/kernel/setup.c @@ -29,6 +29,8 @@ #include <linux/bootmem.h> #include <linux/seq_file.h> #include <linux/init.h> +#include <linux/initrd.h> +#include <linux/root_dev.h> #include <asm/setup.h> #include <asm/irq.h> @@ -52,7 +54,6 @@ void (*mach_reset)(void); void (*mach_halt)(void); void (*mach_power_off)(void); - #ifdef CONFIG_M68000 #define CPU "MC68000" #endif @@ -111,6 +112,69 @@ void (*mach_power_off)(void); extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; extern int _ramstart, _ramend; +#if defined(CONFIG_UBOOT) +/* + * parse_uboot_commandline + * + * Copies u-boot commandline arguments and store them in the proper linux + * variables. + * + * Assumes: + * _init_sp global contains the address in the stack pointer when the + * kernel starts (see head.S::_start) + * + * U-Boot calling convention: + * (*kernel) (kbd, initrd_start, initrd_end, cmd_start, cmd_end); + * + * _init_sp can be parsed as such + * + * _init_sp+00 = u-boot cmd after jsr into kernel (skip) + * _init_sp+04 = &kernel board_info (residual data) + * _init_sp+08 = &initrd_start + * _init_sp+12 = &initrd_end + * _init_sp+16 = &cmd_start + * _init_sp+20 = &cmd_end + * + * This also assumes that the memory locations pointed to are still + * unmodified. U-boot places them near the end of external SDRAM. + * + * Argument(s): + * commandp = the linux commandline arg container to fill. + * size = the sizeof commandp. + * + * Returns: + */ +void parse_uboot_commandline(char *commandp, int size) +{ + extern unsigned long _init_sp; + unsigned long *sp; + unsigned long uboot_kbd; + unsigned long uboot_initrd_start, uboot_initrd_end; + unsigned long uboot_cmd_start, uboot_cmd_end; + + + sp = (unsigned long *)_init_sp; + uboot_kbd = sp[1]; + uboot_initrd_start = sp[2]; + uboot_initrd_end = sp[3]; + uboot_cmd_start = sp[4]; + uboot_cmd_end = sp[5]; + + if (uboot_cmd_start && uboot_cmd_end) + strncpy(commandp, (const char *)uboot_cmd_start, size); +#if defined(CONFIG_BLK_DEV_INITRD) + if (uboot_initrd_start && uboot_initrd_end && + (uboot_initrd_end > uboot_initrd_start)) { + initrd_start = uboot_initrd_start; + initrd_end = uboot_initrd_end; + ROOT_DEV = Root_RAM0; + printk(KERN_INFO "initrd at 0x%lx:0x%lx\n", + initrd_start, initrd_end); + } +#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ +} +#endif /* #if defined(CONFIG_UBOOT) */ + void __init setup_arch(char **cmdline_p) { int bootmap_size; @@ -128,7 +192,24 @@ void __init setup_arch(char **cmdline_p) #if defined(CONFIG_BOOTPARAM) strncpy(&command_line[0], CONFIG_BOOTPARAM_STRING, sizeof(command_line)); command_line[sizeof(command_line) - 1] = 0; -#endif +#endif /* CONFIG_BOOTPARAM */ + +#if defined(CONFIG_UBOOT) + /* CONFIG_UBOOT and CONFIG_BOOTPARAM defined, concatenate cmdline */ + #if defined(CONFIG_BOOTPARAM) + /* Add the whitespace separator */ + command_line[strlen(CONFIG_BOOTPARAM_STRING)] = ' '; + /* Parse uboot command line into the rest of the buffer */ + parse_uboot_commandline( + &command_line[(strlen(CONFIG_BOOTPARAM_STRING)+1)], + (sizeof(command_line) - + (strlen(CONFIG_BOOTPARAM_STRING)+1))); + /* Only CONFIG_UBOOT defined, create cmdline */ + #else + parse_uboot_commandline(&command_line[0], sizeof(command_line)); + #endif /* CONFIG_BOOTPARAM */ + command_line[sizeof(command_line) - 1] = 0; +#endif /* CONFIG_UBOOT */ printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n"); @@ -204,6 +285,13 @@ void __init setup_arch(char **cmdline_p) free_bootmem(memory_start, memory_end - memory_start); reserve_bootmem(memory_start, bootmap_size, BOOTMEM_DEFAULT); +#if defined(CONFIG_UBOOT) && defined(CONFIG_BLK_DEV_INITRD) + if ((initrd_start > 0) && (initrd_start < initrd_end) && + (initrd_end < memory_end)) + reserve_bootmem(initrd_start, initrd_end - initrd_start, + BOOTMEM_DEFAULT); +#endif /* if defined(CONFIG_BLK_DEV_INITRD) */ + /* * Get kmalloc into gear. */ diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c index efdd090778a3..b67cbc735a9b 100644 --- a/arch/m68knommu/kernel/sys_m68k.c +++ b/arch/m68knommu/kernel/sys_m68k.c @@ -27,39 +27,6 @@ #include <asm/cacheflush.h> #include <asm/unistd.h> -/* common code for old and new mmaps */ -static inline long do_mmap2( - unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - int error = -EBADF; - struct file * file = NULL; - - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - 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; -} - -asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, - unsigned long fd, unsigned long pgoff) -{ - return do_mmap2(addr, len, prot, flags, fd, pgoff); -} - /* * Perform the select(nd, in, out, ex, tv) and mmap() system * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to @@ -88,9 +55,8 @@ asmlinkage int old_mmap(struct mmap_arg_struct *arg) if (a.offset & ~PAGE_MASK) goto out; - a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - - error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); + error = sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, + a.offset >> PAGE_SHIFT); out: return error; } diff --git a/arch/m68knommu/kernel/syscalltable.S b/arch/m68knommu/kernel/syscalltable.S index 23535cc415ae..486837efa3d7 100644 --- a/arch/m68knommu/kernel/syscalltable.S +++ b/arch/m68knommu/kernel/syscalltable.S @@ -210,7 +210,7 @@ ENTRY(sys_call_table) .long sys_ni_syscall /* streams2 */ .long sys_vfork /* 190 */ .long sys_getrlimit - .long sys_mmap2 + .long sys_mmap_pgoff .long sys_truncate64 .long sys_ftruncate64 .long sys_stat64 /* 195 */ diff --git a/arch/m68knommu/kernel/vmlinux.lds.S b/arch/m68knommu/kernel/vmlinux.lds.S index 2736a5e309c0..9f1784f586b9 100644 --- a/arch/m68knommu/kernel/vmlinux.lds.S +++ b/arch/m68knommu/kernel/vmlinux.lds.S @@ -8,6 +8,8 @@ */ #include <asm-generic/vmlinux.lds.h> +#include <asm/page.h> +#include <asm/thread_info.h> #if defined(CONFIG_RAMKERNEL) #define RAM_START CONFIG_KERNELBASE @@ -15,7 +17,7 @@ #define TEXT ram #define DATA ram #define INIT ram -#define BSS ram +#define BSSS ram #endif #if defined(CONFIG_ROMKERNEL) || defined(CONFIG_HIMEMKERNEL) #define RAM_START CONFIG_RAMBASE @@ -27,7 +29,7 @@ #define TEXT rom #define DATA ram #define INIT ram -#define BSS ram +#define BSSS ram #endif #ifndef DATA_ADDR @@ -147,40 +149,19 @@ SECTIONS { . = ALIGN(4); _sdata = . ; DATA_DATA - . = ALIGN(32); - *(.data.cacheline_aligned) - . = ALIGN(8192) ; - *(.data.init_task) + CACHELINE_ALIGNED_DATA(32) + INIT_TASK_DATA(THREAD_SIZE) _edata = . ; } > DATA - .init : { - . = ALIGN(4096); + .init.text : { + . = ALIGN(PAGE_SIZE); __init_begin = .; - _sinittext = .; - INIT_TEXT - _einittext = .; - INIT_DATA - . = ALIGN(16); - __setup_start = .; - *(.init.setup) - __setup_end = .; - __initcall_start = .; - INITCALLS - __initcall_end = .; - __con_initcall_start = .; - *(.con_initcall.init) - __con_initcall_end = .; - __security_initcall_start = .; - *(.security_initcall.init) - __security_initcall_end = .; -#ifdef CONFIG_BLK_DEV_INITRD - . = ALIGN(4); - __initramfs_start = .; - *(.init.ramfs) - __initramfs_end = .; -#endif - . = ALIGN(4096); + } > INIT + INIT_TEXT_SECTION(PAGE_SIZE) > INIT + INIT_DATA_SECTION(16) > INIT + .init.data : { + . = ALIGN(PAGE_SIZE); __init_end = .; } > INIT @@ -192,7 +173,7 @@ SECTIONS { . = ALIGN(4) ; _ebss = . ; _end = . ; - } > BSS + } > BSSS DISCARDS } |