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-rw-r--r--arch/cris/kernel/Makefile4
-rw-r--r--arch/cris/kernel/asm-offsets.c59
-rw-r--r--arch/cris/kernel/crisksyms.c30
-rw-r--r--arch/cris/kernel/irq.c66
-rw-r--r--arch/cris/kernel/module.c42
-rw-r--r--arch/cris/kernel/process.c227
-rw-r--r--arch/cris/kernel/profile.c97
-rw-r--r--arch/cris/kernel/ptrace.c72
-rw-r--r--arch/cris/kernel/semaphore.c130
-rw-r--r--arch/cris/kernel/setup.c53
-rw-r--r--arch/cris/kernel/sys_cris.c147
-rw-r--r--arch/cris/kernel/time.c191
-rw-r--r--arch/cris/kernel/traps.c220
-rw-r--r--arch/cris/kernel/vmlinux.lds.S132
14 files changed, 472 insertions, 998 deletions
diff --git a/arch/cris/kernel/Makefile b/arch/cris/kernel/Makefile
index c8e8ea57098..b45640b3e60 100644
--- a/arch/cris/kernel/Makefile
+++ b/arch/cris/kernel/Makefile
@@ -3,10 +3,10 @@
# Makefile for the linux kernel.
#
+CPPFLAGS_vmlinux.lds := -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE)
extra-y := vmlinux.lds
-obj-y := process.o traps.o irq.o ptrace.o setup.o \
- time.o sys_cris.o semaphore.o
+obj-y := process.o traps.o irq.o ptrace.o setup.o time.o sys_cris.o
obj-$(CONFIG_MODULES) += crisksyms.o
obj-$(CONFIG_MODULES) += module.o
diff --git a/arch/cris/kernel/asm-offsets.c b/arch/cris/kernel/asm-offsets.c
new file mode 100644
index 00000000000..a5fd88d816a
--- /dev/null
+++ b/arch/cris/kernel/asm-offsets.c
@@ -0,0 +1,59 @@
+#include <linux/kbuild.h>
+#include <linux/sched.h>
+#include <asm/thread_info.h>
+
+/*
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed to extract
+ * and format the required data.
+ */
+
+#if !defined(CONFIG_ETRAX_ARCH_V10) && !defined(CONFIG_ETRAX_ARCH_V32)
+#error One of ARCH v10 and ARCH v32 must be true!
+#endif
+
+int main(void)
+{
+#define ENTRY(entry) DEFINE(PT_ ## entry, offsetof(struct pt_regs, entry))
+ ENTRY(orig_r10);
+ ENTRY(r13);
+ ENTRY(r12);
+ ENTRY(r11);
+ ENTRY(r10);
+ ENTRY(r9);
+#ifdef CONFIG_ETRAX_ARCH_V32
+ ENTRY(acr);
+ ENTRY(srs);
+#endif
+ ENTRY(mof);
+#ifdef CONFIG_ETRAX_ARCH_V10
+ ENTRY(dccr);
+#else
+ ENTRY(ccs);
+#endif
+ ENTRY(srp);
+ BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(TI_ ## entry, offsetof(struct thread_info, entry))
+ ENTRY(task);
+ ENTRY(flags);
+ ENTRY(preempt_count);
+ BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(THREAD_ ## entry, offsetof(struct thread_struct, entry))
+ ENTRY(ksp);
+ ENTRY(usp);
+#ifdef CONFIG_ETRAX_ARCH_V10
+ ENTRY(dccr);
+#else
+ ENTRY(ccs);
+#endif
+ BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(TASK_ ## entry, offsetof(struct task_struct, entry))
+ ENTRY(pid);
+ BLANK();
+ DEFINE(LCLONE_VM, CLONE_VM);
+ DEFINE(LCLONE_UNTRACED, CLONE_UNTRACED);
+ return 0;
+}
diff --git a/arch/cris/kernel/crisksyms.c b/arch/cris/kernel/crisksyms.c
index 85833d704eb..5868cee20eb 100644
--- a/arch/cris/kernel/crisksyms.c
+++ b/arch/cris/kernel/crisksyms.c
@@ -1,17 +1,14 @@
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/user.h>
#include <linux/elfcore.h>
#include <linux/sched.h>
#include <linux/in6.h>
#include <linux/interrupt.h>
-#include <linux/smp_lock.h>
#include <linux/pm.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/tty.h>
-#include <asm/semaphore.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/checksum.h>
@@ -21,7 +18,6 @@
#include <asm/pgtable.h>
#include <asm/fasttimer.h>
-extern void dump_thread(struct pt_regs *, struct user *);
extern unsigned long get_cmos_time(void);
extern void __Udiv(void);
extern void __Umod(void);
@@ -30,28 +26,13 @@ extern void __Mod(void);
extern void __ashldi3(void);
extern void __ashrdi3(void);
extern void __lshrdi3(void);
+extern void __negdi2(void);
extern void iounmap(volatile void * __iomem);
/* Platform dependent support */
-EXPORT_SYMBOL(dump_thread);
-EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(get_cmos_time);
EXPORT_SYMBOL(loops_per_usec);
-/* String functions */
-EXPORT_SYMBOL(memcmp);
-EXPORT_SYMBOL(memmove);
-EXPORT_SYMBOL(strpbrk);
-EXPORT_SYMBOL(strstr);
-EXPORT_SYMBOL(strcpy);
-EXPORT_SYMBOL(strchr);
-EXPORT_SYMBOL(strcmp);
-EXPORT_SYMBOL(strlen);
-EXPORT_SYMBOL(strcat);
-EXPORT_SYMBOL(strncat);
-EXPORT_SYMBOL(strncmp);
-EXPORT_SYMBOL(strncpy);
-
/* Math functions */
EXPORT_SYMBOL(__Udiv);
EXPORT_SYMBOL(__Umod);
@@ -60,17 +41,12 @@ EXPORT_SYMBOL(__Mod);
EXPORT_SYMBOL(__ashldi3);
EXPORT_SYMBOL(__ashrdi3);
EXPORT_SYMBOL(__lshrdi3);
+EXPORT_SYMBOL(__negdi2);
/* Memory functions */
EXPORT_SYMBOL(__ioremap);
EXPORT_SYMBOL(iounmap);
-/* Semaphore functions */
-EXPORT_SYMBOL(__up);
-EXPORT_SYMBOL(__down);
-EXPORT_SYMBOL(__down_interruptible);
-EXPORT_SYMBOL(__down_trylock);
-
/* Userspace access functions */
EXPORT_SYMBOL(__copy_user_zeroing);
EXPORT_SYMBOL(__copy_user);
@@ -89,4 +65,4 @@ EXPORT_SYMBOL(start_one_shot_timer);
EXPORT_SYMBOL(del_fast_timer);
EXPORT_SYMBOL(schedule_usleep);
#endif
-
+EXPORT_SYMBOL(csum_partial);
diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c
index 30deaf1b728..dd0be5de55d 100644
--- a/arch/cris/kernel/irq.c
+++ b/arch/cris/kernel/irq.c
@@ -2,12 +2,12 @@
*
* linux/arch/cris/kernel/irq.c
*
- * Copyright (c) 2000,2001 Axis Communications AB
+ * Copyright (c) 2000,2007 Axis Communications AB
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
* This file contains the code used by various IRQ handling routines:
- * asking for different IRQ's should be done through these routines
+ * asking for different IRQs 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.
@@ -15,11 +15,10 @@
*/
/*
- * IRQ's are in fact implemented a bit like signal handlers for the kernel.
+ * IRQs 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/config.h>
#include <linux/module.h>
#include <linux/ptrace.h>
#include <linux/irq.h>
@@ -30,7 +29,6 @@
#include <linux/ioport.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
-#include <linux/slab.h>
#include <linux/random.h>
#include <linux/init.h>
#include <linux/seq_file.h>
@@ -38,71 +36,25 @@
#include <linux/spinlock.h>
#include <asm/io.h>
-
-void ack_bad_irq(unsigned int irq)
-{
- printk("unexpected IRQ trap at vector %02x\n", irq);
-}
-
-int show_interrupts(struct seq_file *p, void *v)
-{
- int i = *(loff_t *) v, j;
- struct irqaction * action;
- unsigned long flags;
-
- if (i == 0) {
- seq_printf(p, " ");
- for (j=0; j<NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "CPU%d ",j);
- seq_putc(p, '\n');
- }
-
- if (i < NR_IRQS) {
- spin_lock_irqsave(&irq_desc[i].lock, flags);
- action = irq_desc[i].action;
- if (!action)
- goto skip;
- seq_printf(p, "%3d: ",i);
-#ifndef CONFIG_SMP
- seq_printf(p, "%10u ", kstat_irqs(i));
-#else
- for (j = 0; j < NR_CPUS; j++)
- if (cpu_online(j))
- seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
-#endif
- seq_printf(p, " %14s", irq_desc[i].handler->typename);
- seq_printf(p, " %s", action->name);
-
- for (action=action->next; action; action = action->next)
- seq_printf(p, ", %s", action->name);
-
- seq_putc(p, '\n');
-skip:
- spin_unlock_irqrestore(&irq_desc[i].lock, flags);
- }
- return 0;
-}
-
+#include <arch/system.h>
/* called by the assembler IRQ entry functions defined in irq.h
- * to dispatch the interrupts to registred handlers
- * interrupts are disabled upon entry - depending on if the
- * interrupt was registred with SA_INTERRUPT or not, interrupts
- * are re-enabled or not.
+ * to dispatch the interrupts to registered handlers
*/
asmlinkage void do_IRQ(int irq, struct pt_regs * regs)
{
unsigned long sp;
+ struct pt_regs *old_regs = set_irq_regs(regs);
irq_enter();
sp = rdsp();
if (unlikely((sp & (PAGE_SIZE - 1)) < (PAGE_SIZE/8))) {
printk("do_IRQ: stack overflow: %lX\n", sp);
show_stack(NULL, (unsigned long *)sp);
}
- __do_IRQ(irq, regs);
- irq_exit();
+ generic_handle_irq(irq);
+ irq_exit();
+ set_irq_regs(old_regs);
}
void weird_irq(void)
diff --git a/arch/cris/kernel/module.c b/arch/cris/kernel/module.c
index 11b867df861..51123f985eb 100644
--- a/arch/cris/kernel/module.c
+++ b/arch/cris/kernel/module.c
@@ -21,6 +21,7 @@
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#if 0
#define DEBUGP printk
@@ -28,40 +29,18 @@
#define DEBUGP(fmt , ...)
#endif
+#ifdef CONFIG_ETRAX_KMALLOCED_MODULES
void *module_alloc(unsigned long size)
{
- if (size == 0)
- return NULL;
- return vmalloc_exec(size);
+ return kmalloc(size, GFP_KERNEL);
}
-
/* Free memory returned from module_alloc */
void module_free(struct module *mod, void *module_region)
{
- vfree(module_region);
- /* FIXME: If module_region == mod->init_region, trim exception
- table entries. */
-}
-
-/* We don't need anything special. */
-int module_frob_arch_sections(Elf_Ehdr *hdr,
- Elf_Shdr *sechdrs,
- char *secstrings,
- struct module *mod)
-{
- return 0;
-}
-
-int apply_relocate(Elf32_Shdr *sechdrs,
- const char *strtab,
- unsigned int symindex,
- unsigned int relsec,
- struct module *me)
-{
- printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
- return -ENOEXEC;
+ kfree(module_region);
}
+#endif
int apply_relocate_add(Elf32_Shdr *sechdrs,
const char *strtab,
@@ -101,14 +80,3 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
return 0;
}
-
-int module_finalize(const Elf_Ehdr *hdr,
- const Elf_Shdr *sechdrs,
- struct module *me)
-{
- return 0;
-}
-
-void module_arch_cleanup(struct module *mod)
-{
-}
diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c
index 949a0e40e03..b78498eb079 100644
--- a/arch/cris/kernel/process.c
+++ b/arch/cris/kernel/process.c
@@ -1,5 +1,4 @@
-/* $Id: process.c,v 1.21 2005/03/04 08:16:17 starvik Exp $
- *
+/*
* linux/arch/cris/kernel/process.c
*
* Copyright (C) 1995 Linus Torvalds
@@ -7,118 +6,18 @@
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
- * $Log: process.c,v $
- * Revision 1.21 2005/03/04 08:16:17 starvik
- * Merge of Linux 2.6.11.
- *
- * Revision 1.20 2005/01/18 05:57:22 starvik
- * Renamed hlt_counter to cris_hlt_counter and made it global.
- *
- * Revision 1.19 2004/10/19 13:07:43 starvik
- * Merge of Linux 2.6.9
- *
- * Revision 1.18 2004/08/16 12:37:23 starvik
- * Merge of Linux 2.6.8
- *
- * Revision 1.17 2004/04/05 13:53:48 starvik
- * Merge of Linux 2.6.5
- *
- * Revision 1.16 2003/10/27 08:04:33 starvik
- * Merge of Linux 2.6.0-test9
- *
- * Revision 1.15 2003/09/11 07:29:52 starvik
- * Merge of Linux 2.6.0-test5
- *
- * Revision 1.14 2003/06/10 10:21:12 johana
- * Moved thread_saved_pc() from arch/cris/kernel/process.c to
- * subarch specific process.c. arch-v32 has an erp, no irp.
- *
- * Revision 1.13 2003/04/09 05:20:47 starvik
- * Merge of Linux 2.5.67
- *
- * Revision 1.12 2002/12/11 15:41:11 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/kernel
- *
- * Revision 1.11 2002/12/10 09:00:10 starvik
- * Merge of Linux 2.5.51
- *
- * Revision 1.10 2002/11/27 08:42:34 starvik
- * Argument to user_regs() is thread_info*
- *
- * Revision 1.9 2002/11/26 09:44:21 starvik
- * New threads exits through ret_from_fork (necessary for preemptive scheduling)
- *
- * Revision 1.8 2002/11/19 14:35:24 starvik
- * Changes from linux 2.4
- * Changed struct initializer syntax to the currently prefered notation
- *
- * Revision 1.7 2002/11/18 07:39:42 starvik
- * thread_saved_pc moved here from processor.h
- *
- * Revision 1.6 2002/11/14 06:51:27 starvik
- * Made cpu_idle more similar with other archs
- * init_task_union -> init_thread_union
- * Updated for new interrupt macros
- * sys_clone and do_fork have a new argument, user_tid
- *
- * Revision 1.5 2002/11/05 06:45:11 starvik
- * Merge of Linux 2.5.45
- *
- * Revision 1.4 2002/02/05 15:37:44 bjornw
- * Need init_task.h
- *
- * Revision 1.3 2002/01/21 15:22:49 bjornw
- * current->counter is gone
- *
- * Revision 1.22 2001/11/13 09:40:43 orjanf
- * Added dump_fpu (needed for core dumps).
- *
- * Revision 1.21 2001/11/12 18:26:21 pkj
- * Fixed compiler warnings.
- *
- * Revision 1.20 2001/10/03 08:21:39 jonashg
- * cause_of_death does not exist if CONFIG_SVINTO_SIM is defined.
- *
- * Revision 1.19 2001/09/26 11:52:54 bjornw
- * INIT_MMAP is gone in 2.4.10
- *
- * Revision 1.18 2001/08/21 21:43:51 hp
- * Move last watchdog fix inside #ifdef CONFIG_ETRAX_WATCHDOG
- *
- * Revision 1.17 2001/08/21 13:48:01 jonashg
- * Added fix by HP to avoid oops when doing a hard_reset_now.
- *
- * Revision 1.16 2001/06/21 02:00:40 hp
- * * entry.S: Include asm/unistd.h.
- * (_sys_call_table): Use section .rodata, not .data.
- * (_kernel_thread): Move from...
- * * process.c: ... here.
- * * entryoffsets.c (VAL): Break out from...
- * (OF): Use VAL.
- * (LCLONE_VM): New asmified value from CLONE_VM.
- *
- * Revision 1.15 2001/06/20 16:31:57 hp
- * Add comments to describe empty functions according to review.
- *
- * Revision 1.14 2001/05/29 11:27:59 markusl
- * Fixed so that hard_reset_now will do reset even if watchdog wasn't enabled
- *
- * Revision 1.13 2001/03/20 19:44:06 bjornw
- * Use the 7th syscall argument for regs instead of current_regs
- *
*/
/*
* This file handles the architecture-dependent parts of process handling..
*/
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
#include <asm/irq.h>
#include <linux/module.h>
#include <linux/spinlock.h>
-#include <linux/fs_struct.h>
#include <linux/init_task.h>
#include <linux/sched.h>
#include <linux/fs.h>
@@ -126,100 +25,18 @@
#include <linux/elfcore.h>
#include <linux/mqueue.h>
#include <linux/reboot.h>
+#include <linux/rcupdate.h>
//#define DEBUG
-/*
- * Initial task structure. Make this a per-architecture thing,
- * because different architectures tend to have different
- * alignment requirements and potentially different initial
- * setup.
- */
-
-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 having a special
- * "init_task" linker map entry..
- */
-union thread_union init_thread_union
- __attribute__((__section__(".data.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);
-
-/*
- * The hlt_counter, disable_hlt and enable_hlt is just here as a hook if
- * there would ever be a halt sequence (for power save when idle) with
- * some largish delay when halting or resuming *and* a driver that can't
- * afford that delay. The hlt_counter would then be checked before
- * executing the halt sequence, and the driver marks the unhaltable
- * region by enable_hlt/disable_hlt.
- */
-
-int cris_hlt_counter=0;
-
-void disable_hlt(void)
-{
- cris_hlt_counter++;
-}
-
-EXPORT_SYMBOL(disable_hlt);
-
-void enable_hlt(void)
-{
- cris_hlt_counter--;
-}
-
-EXPORT_SYMBOL(enable_hlt);
-
-/*
- * The following aren't currently used.
- */
-void (*pm_idle)(void);
-
extern void default_idle(void);
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle (void)
+void (*pm_power_off)(void);
+EXPORT_SYMBOL(pm_power_off);
+
+void arch_cpu_idle(void)
{
- /* endless idle loop with no priority at all */
- while (1) {
- while (!need_resched()) {
- void (*idle)(void);
- /*
- * Mark this as an RCU critical section so that
- * synchronize_kernel() in the unload path waits
- * for our completion.
- */
- idle = pm_idle;
- if (!idle)
- idle = default_idle;
- idle();
- }
- schedule();
- }
+ default_idle();
}
void hard_reset_now (void);
@@ -255,34 +72,6 @@ void flush_thread(void)
{
}
-/*
- * fill in the user structure for a core dump..
- */
-void dump_thread(struct pt_regs * regs, struct user * dump)
-{
-#if 0
- int i;
-
- /* changed the size calculations - should hopefully work better. lbt */
- dump->magic = CMAGIC;
- dump->start_code = 0;
- dump->start_stack = regs->esp & ~(PAGE_SIZE - 1);
- dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
- dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
- dump->u_dsize -= dump->u_tsize;
- dump->u_ssize = 0;
- for (i = 0; i < 8; i++)
- dump->u_debugreg[i] = current->debugreg[i];
-
- if (dump->start_stack < TASK_SIZE)
- dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
-
- dump->regs = *regs;
-
- dump->u_fpvalid = dump_fpu (regs, &dump->i387);
-#endif
-}
-
/* Fill in the fpu structure for a core dump. */
int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
{
diff --git a/arch/cris/kernel/profile.c b/arch/cris/kernel/profile.c
index 69c52189f04..cd9f15b92f8 100644
--- a/arch/cris/kernel/profile.c
+++ b/arch/cris/kernel/profile.c
@@ -2,72 +2,85 @@
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
+#include <linux/slab.h>
#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/uaccess.h>
#define SAMPLE_BUFFER_SIZE 8192
-static char* sample_buffer;
-static char* sample_buffer_pos;
+static char *sample_buffer;
+static char *sample_buffer_pos;
static int prof_running = 0;
-void
-cris_profile_sample(struct pt_regs* regs)
+void cris_profile_sample(struct pt_regs *regs)
{
- if (!prof_running)
- return;
- if (user_mode(regs))
- *(unsigned int*)sample_buffer_pos = current->pid;
- else
- *(unsigned int*)sample_buffer_pos = 0;
- *(unsigned int*)(sample_buffer_pos + 4) = instruction_pointer(regs);
- sample_buffer_pos += 8;
- if (sample_buffer_pos == sample_buffer + SAMPLE_BUFFER_SIZE)
- sample_buffer_pos = sample_buffer;
+ if (!prof_running)
+ return;
+
+ if (user_mode(regs))
+ *(unsigned int*)sample_buffer_pos = current->pid;
+ else
+ *(unsigned int*)sample_buffer_pos = 0;
+
+ *(unsigned int *)(sample_buffer_pos + 4) = instruction_pointer(regs);
+ sample_buffer_pos += 8;
+
+ if (sample_buffer_pos == sample_buffer + SAMPLE_BUFFER_SIZE)
+ sample_buffer_pos = sample_buffer;
}
static ssize_t
-read_cris_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
+read_cris_profile(struct file *file, char __user *buf,
+ size_t count, loff_t *ppos)
{
- unsigned long p = *ppos;
- if (p > SAMPLE_BUFFER_SIZE)
- return 0;
- if (p + count > SAMPLE_BUFFER_SIZE)
- count = SAMPLE_BUFFER_SIZE - p;
- if (copy_to_user(buf, sample_buffer + p,count))
- return -EFAULT;
- memset(sample_buffer + p, 0, count);
- *ppos += count;
- return count;
+ unsigned long p = *ppos;
+ ssize_t ret;
+
+ ret = simple_read_from_buffer(buf, count, ppos, sample_buffer,
+ SAMPLE_BUFFER_SIZE);
+ if (ret < 0)
+ return ret;
+
+ memset(sample_buffer + p, 0, ret);
+
+ return ret;
}
static ssize_t
write_cris_profile(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
+ size_t count, loff_t *ppos)
{
- sample_buffer_pos = sample_buffer;
- memset(sample_buffer, 0, SAMPLE_BUFFER_SIZE);
+ sample_buffer_pos = sample_buffer;
+ memset(sample_buffer, 0, SAMPLE_BUFFER_SIZE);
+ return count < SAMPLE_BUFFER_SIZE ? count : SAMPLE_BUFFER_SIZE;
}
-static struct file_operations cris_proc_profile_operations = {
+static const struct file_operations cris_proc_profile_operations = {
.read = read_cris_profile,
.write = write_cris_profile,
+ .llseek = default_llseek,
};
-static int
-__init init_cris_profile(void)
+static int __init init_cris_profile(void)
{
- struct proc_dir_entry *entry;
- sample_buffer = (char*)kmalloc(SAMPLE_BUFFER_SIZE, GFP_KERNEL);
- sample_buffer_pos = sample_buffer;
- entry = create_proc_entry("system_profile", S_IWUSR | S_IRUGO, NULL);
- if (entry) {
- entry->proc_fops = &cris_proc_profile_operations;
- entry->size = SAMPLE_BUFFER_SIZE;
- }
- prof_running = 1;
- return 0;
-}
+ struct proc_dir_entry *entry;
+
+ sample_buffer = kmalloc(SAMPLE_BUFFER_SIZE, GFP_KERNEL);
+ if (!sample_buffer) {
+ return -ENOMEM;
+ }
+
+ sample_buffer_pos = sample_buffer;
+ entry = proc_create("system_profile", S_IWUSR | S_IRUGO, NULL,
+ &cris_proc_profile_operations);
+ if (entry) {
+ proc_set_size(entry, SAMPLE_BUFFER_SIZE);
+ }
+ prof_running = 1;
+
+ return 0;
+}
__initcall(init_cris_profile);
+
diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c
index 2b6363cbe98..58d44ee1a71 100644
--- a/arch/cris/kernel/ptrace.c
+++ b/arch/cris/kernel/ptrace.c
@@ -2,93 +2,43 @@
* linux/arch/cris/kernel/ptrace.c
*
* Parts taken from the m68k port.
- *
+ *
* Copyright (c) 2000, 2001, 2002 Axis Communications AB
*
* Authors: Bjorn Wesen
*
- * $Log: ptrace.c,v $
- * Revision 1.10 2004/09/22 11:50:01 orjanf
- * * Moved get_reg/put_reg to arch-specific files.
- * * Added functions to access debug registers (CRISv32).
- * * Added support for PTRACE_SINGLESTEP (CRISv32).
- * * Added S flag to CCS_MASK (CRISv32).
- *
- * Revision 1.9 2003/07/04 12:56:11 tobiasa
- * Moved arch-specific code to arch-specific files.
- *
- * Revision 1.8 2003/04/09 05:20:47 starvik
- * Merge of Linux 2.5.67
- *
- * Revision 1.7 2002/11/27 08:42:34 starvik
- * Argument to user_regs() is thread_info*
- *
- * Revision 1.6 2002/11/20 11:56:11 starvik
- * Merge of Linux 2.5.48
- *
- * Revision 1.5 2002/11/18 07:41:19 starvik
- * Removed warning
- *
- * Revision 1.4 2002/11/11 12:47:28 starvik
- * SYSCALL_TRACE has been moved to thread flags
- *
- * Revision 1.3 2002/02/05 15:37:18 bjornw
- * * Add do_notify_resume (replaces do_signal in the callchain)
- * * syscall_trace is now do_syscall_trace
- * * current->ptrace flag PT_TRACESYS -> PT_SYSCALLTRACE
- * * Keep track of the current->work.syscall_trace counter
- *
- * Revision 1.2 2001/12/18 13:35:20 bjornw
- * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
- *
- * Revision 1.8 2001/11/12 18:26:21 pkj
- * Fixed compiler warnings.
- *
- * Revision 1.7 2001/09/26 11:53:49 bjornw
- * PTRACE_DETACH works more simple in 2.4.10
- *
- * Revision 1.6 2001/07/25 16:08:47 bjornw
- * PTRACE_ATTACH bulk moved into arch-independent code in 2.4.7
- *
- * Revision 1.5 2001/03/26 14:24:28 orjanf
- * * Changed loop condition.
- * * Added comment documenting non-standard ptrace behaviour.
- *
- * Revision 1.4 2001/03/20 19:44:41 bjornw
- * Use the user_regs macro instead of thread.esp0
- *
- * Revision 1.3 2000/12/18 23:45:25 bjornw
- * Linux/CRIS first version
- *
- *
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
+#include <linux/tracehook.h>
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
-#include <asm/system.h>
#include <asm/processor.h>
/* notification of userspace execution resumption
* - triggered by current->work.notify_resume
*/
-extern int do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs);
+extern int do_signal(int canrestart, struct pt_regs *regs);
-void do_notify_resume(int canrestart, sigset_t *oldset, struct pt_regs *regs,
- __u32 thread_info_flags )
+void do_notify_resume(int canrestart, struct pt_regs *regs,
+ __u32 thread_info_flags)
{
/* deal with pending signal delivery */
if (thread_info_flags & _TIF_SIGPENDING)
- do_signal(canrestart,oldset,regs);
+ do_signal(canrestart,regs);
+
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
}
diff --git a/arch/cris/kernel/semaphore.c b/arch/cris/kernel/semaphore.c
deleted file mode 100644
index b884263d3cd..00000000000
--- a/arch/cris/kernel/semaphore.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Generic semaphore code. Buyer beware. Do your own
- * specific changes in <asm/semaphore-helper.h>
- */
-
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <asm/semaphore-helper.h>
-
-/*
- * Semaphores are implemented using a two-way counter:
- * The "count" variable is decremented for each process
- * that tries to sleep, while the "waking" variable is
- * incremented when the "up()" code goes to wake up waiting
- * processes.
- *
- * 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.
- *
- * waking_non_zero() (from asm/semaphore.h) must execute
- * atomically.
- *
- * When __up() is called, the count was negative before
- * incrementing it, and we need to wake up somebody.
- *
- * This routine adds one to the count of processes that need to
- * wake up and exit. ALL waiting processes actually wake up but
- * only the one that gets to the "waking" field first will gate
- * through and acquire the semaphore. The others will go back
- * to sleep.
- *
- * 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.
- */
-void __up(struct semaphore *sem)
-{
- wake_one_more(sem);
- wake_up(&sem->wait);
-}
-
-/*
- * Perform the "down" function. Return zero for semaphore acquired,
- * return negative for signalled out of the function.
- *
- * If called from __down, the return is ignored and the wait loop is
- * not interruptible. This means that a task waiting on a semaphore
- * using "down()" cannot be killed until someone does an "up()" on
- * the semaphore.
- *
- * If called from __down_interruptible, the return value gets checked
- * upon return. If the return value is negative then the task continues
- * with the negative value in the return register (it can be tested by
- * the caller).
- *
- * Either form may be used in conjunction with "up()".
- *
- */
-
-#define DOWN_VAR \
- struct task_struct *tsk = current; \
- wait_queue_t wait; \
- init_waitqueue_entry(&wait, tsk);
-
-#define DOWN_HEAD(task_state) \
- \
- \
- tsk->state = (task_state); \
- add_wait_queue(&sem->wait, &wait); \
- \
- /* \
- * Ok, we're set up. sem->count is known to be less than zero \
- * so we must wait. \
- * \
- * We can let go the lock for purposes of waiting. \
- * We re-acquire it after awaking so as to protect \
- * all semaphore operations. \
- * \
- * If "up()" is called before we call waking_non_zero() then \
- * we will catch it right away. If it is called later then \
- * we will have to go through a wakeup cycle to catch it. \
- * \
- * Multiple waiters contend for the semaphore lock to see \
- * who gets to gate through and who has to wait some more. \
- */ \
- for (;;) {
-
-#define DOWN_TAIL(task_state) \
- tsk->state = (task_state); \
- } \
- tsk->state = TASK_RUNNING; \
- remove_wait_queue(&sem->wait, &wait);
-
-void __sched __down(struct semaphore * sem)
-{
- DOWN_VAR
- DOWN_HEAD(TASK_UNINTERRUPTIBLE)
- if (waking_non_zero(sem))
- break;
- schedule();
- DOWN_TAIL(TASK_UNINTERRUPTIBLE)
-}
-
-int __sched __down_interruptible(struct semaphore * sem)
-{
- int ret = 0;
- DOWN_VAR
- DOWN_HEAD(TASK_INTERRUPTIBLE)
-
- ret = waking_non_zero_interruptible(sem, tsk);
- if (ret)
- {
- if (ret == 1)
- /* ret != 0 only if we get interrupted -arca */
- ret = 0;
- break;
- }
- schedule();
- DOWN_TAIL(TASK_INTERRUPTIBLE)
- return ret;
-}
-
-int __down_trylock(struct semaphore * sem)
-{
- return waking_non_zero_trylock(sem);
-}
diff --git a/arch/cris/kernel/setup.c b/arch/cris/kernel/setup.c
index d11206e467a..905b70ea993 100644
--- a/arch/cris/kernel/setup.c
+++ b/arch/cris/kernel/setup.c
@@ -10,33 +10,35 @@
* This file handles the architecture-dependent parts of initialization
*/
-#include <linux/config.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <asm/pgtable.h>
#include <linux/seq_file.h>
-#include <linux/tty.h>
+#include <linux/screen_info.h>
#include <linux/utsname.h>
-
+#include <linux/pfn.h>
+#include <linux/cpu.h>
#include <asm/setup.h>
+#include <arch/system.h>
/*
* Setup options
*/
-struct drive_info_struct { char dummy[32]; } drive_info;
struct screen_info screen_info;
extern int root_mountflags;
extern char _etext, _edata, _end;
-char cris_command_line[COMMAND_LINE_SIZE] = { 0, };
+char __initdata cris_command_line[COMMAND_LINE_SIZE] = { 0, };
extern const unsigned long text_start, edata; /* set by the linker script */
extern unsigned long dram_start, dram_end;
extern unsigned long romfs_start, romfs_length, romfs_in_flash; /* from head.S */
+static struct cpu cpu_devices[NR_CPUS];
+
extern void show_etrax_copyright(void); /* arch-vX/kernel/setup.c */
/* This mainly sets up the memory area, and can be really confusing.
@@ -46,24 +48,23 @@ extern void show_etrax_copyright(void); /* arch-vX/kernel/setup.c */
* given by the macro __pa().
*
* In this DRAM, the kernel code and data is loaded, in the beginning.
- * It really starts at c0004000 to make room for some special pages -
+ * It really starts at c0004000 to make room for some special pages -
* the start address is text_start. The kernel data ends at _end. After
* this the ROM filesystem is appended (if there is any).
- *
+ *
* Between this address and dram_end, we have RAM pages usable to the
* boot code and the system.
*
*/
-void __init
-setup_arch(char **cmdline_p)
+void __init setup_arch(char **cmdline_p)
{
extern void init_etrax_debug(void);
unsigned long bootmap_size;
unsigned long start_pfn, max_pfn;
unsigned long memory_start;
- /* register an initial console printing routine for printk's */
+ /* register an initial console printing routine for printk's */
init_etrax_debug();
@@ -89,10 +90,6 @@ setup_arch(char **cmdline_p)
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
-#define PFN_UP(x) (((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
-#define PFN_DOWN(x) ((x) >> PAGE_SHIFT)
-#define PFN_PHYS(x) ((x) << PAGE_SHIFT)
-
/* min_low_pfn points to the start of DRAM, start_pfn points
* to the first DRAM pages after the kernel, and max_low_pfn
* to the end of DRAM.
@@ -126,7 +123,7 @@ setup_arch(char **cmdline_p)
min_low_pfn = PAGE_OFFSET >> PAGE_SHIFT;
bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
- min_low_pfn,
+ min_low_pfn,
max_low_pfn);
/* And free all memory not belonging to the kernel (addr, size) */
@@ -142,7 +139,7 @@ setup_arch(char **cmdline_p)
* Arguments are start, size
*/
- reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size);
+ reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
/* paging_init() sets up the MMU and marks all pages as reserved */
@@ -158,19 +155,20 @@ setup_arch(char **cmdline_p)
#endif
/* Save command line for future references. */
- memcpy(saved_command_line, cris_command_line, COMMAND_LINE_SIZE);
- saved_command_line[COMMAND_LINE_SIZE - 1] = '\0';
+ memcpy(boot_command_line, cris_command_line, COMMAND_LINE_SIZE);
+ boot_command_line[COMMAND_LINE_SIZE - 1] = '\0';
/* give credit for the CRIS port */
show_etrax_copyright();
/* Setup utsname */
- strcpy(system_utsname.machine, cris_machine_name);
+ strcpy(init_utsname()->machine, cris_machine_name);
}
+#ifdef CONFIG_PROC_FS
static void *c_start(struct seq_file *m, loff_t *pos)
{
- return *pos < NR_CPUS ? (void *)(int)(*pos + 1): NULL;
+ return *pos < nr_cpu_ids ? (void *)(int)(*pos + 1) : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
@@ -185,11 +183,24 @@ static void c_stop(struct seq_file *m, void *v)
extern int show_cpuinfo(struct seq_file *m, void *v);
-struct seq_operations cpuinfo_op = {
+const struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
.show = show_cpuinfo,
};
+#endif /* CONFIG_PROC_FS */
+
+static int __init topology_init(void)
+{
+ int i;
+
+ for_each_possible_cpu(i) {
+ return register_cpu(&cpu_devices[i], i);
+ }
+
+ return 0;
+}
+subsys_initcall(topology_init);
diff --git a/arch/cris/kernel/sys_cris.c b/arch/cris/kernel/sys_cris.c
index 0aa0e0ebb3a..7aa036ec78f 100644
--- a/arch/cris/kernel/sys_cris.c
+++ b/arch/cris/kernel/sys_cris.c
@@ -13,162 +13,23 @@
#include <linux/sched.h>
#include <linux/syscalls.h>
#include <linux/mm.h>
+#include <linux/fs.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/shm.h>
#include <linux/stat.h>
#include <linux/mman.h>
#include <linux/file.h>
+#include <linux/ipc.h>
#include <asm/uaccess.h>
-#include <asm/ipc.h>
#include <asm/segment.h>
-/*
- * 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 __user * fildes)
-{
- int fd[2];
- int error;
-
- lock_kernel();
- error = do_pipe(fd);
- unlock_kernel();
- if (!error) {
- if (copy_to_user(fildes, fd, 2*sizeof(int)))
- error = -EFAULT;
- }
- return error;
-}
-
-/* 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(&current->mm->mmap_sem);
- error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&current->mm->mmap_sem);
-
- if (file)
- fput(file);
-out:
- return error;
-}
-
-asmlinkage unsigned long old_mmap(unsigned long __user *args)
-{
- unsigned long buffer[6];
- int err = -EFAULT;
-
- if (copy_from_user(&buffer, args, sizeof(buffer)))
- goto out;
-
- err = -EINVAL;
- if (buffer[5] & ~PAGE_MASK) /* verify that offset is on page boundary */
- goto out;
-
- err = do_mmap2(buffer[0], buffer[1], buffer[2], buffer[3],
- buffer[4], buffer[5] >> PAGE_SHIFT);
-out:
- return err;
-}
-
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);
-}
-
-/*
- * sys_ipc() is the de-multiplexer for the SysV IPC calls..
- *
- * This is really horribly ugly. (same as arch/i386)
- */
-
-asmlinkage int sys_ipc (uint call, int first, int second,
- int third, void __user *ptr, long fifth)
-{
- int version, ret;
-
- version = call >> 16; /* hack for backward compatibility */
- call &= 0xffff;
-
- switch (call) {
- case SEMOP:
- return sys_semtimedop (first, (struct sembuf __user *)ptr, second, NULL);
- case SEMTIMEDOP:
- return sys_semtimedop(first, (struct sembuf __user *)ptr, second,
- (const struct timespec __user *)fifth);
-
- case SEMGET:
- return sys_semget (first, second, third);
- case SEMCTL: {
- union semun fourth;
- if (!ptr)
- return -EINVAL;
- if (get_user(fourth.__pad, (void * __user *) ptr))
- return -EFAULT;
- return sys_semctl (first, second, third, fourth);
- }
-
- case MSGSND:
- return sys_msgsnd (first, (struct msgbuf __user *) 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 __user *) ptr,
- sizeof (tmp)))
- return -EFAULT;
- return sys_msgrcv (first, tmp.msgp, second,
- tmp.msgtyp, third);
- }
- default:
- return sys_msgrcv (first,
- (struct msgbuf __user *) ptr,
- second, fifth, third);
- }
- case MSGGET:
- return sys_msgget ((key_t) first, second);
- case MSGCTL:
- return sys_msgctl (first, second, (struct msqid_ds __user *) ptr);
-
- case SHMAT: {
- ulong raddr;
- ret = do_shmat (first, (char __user *) ptr, second, &raddr);
- if (ret)
- return ret;
- return put_user (raddr, (ulong __user *) third);
- }
- case SHMDT:
- return sys_shmdt ((char __user *)ptr);
- case SHMGET:
- return sys_shmget (first, second, third);
- case SHMCTL:
- return sys_shmctl (first, second,
- (struct shmid_ds __user *) ptr);
- default:
- return -ENOSYS;
- }
+ /* bug(?): 8Kb pages here */
+ return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
}
diff --git a/arch/cris/kernel/time.c b/arch/cris/kernel/time.c
index fa2d4323da2..fe6acdabbc8 100644
--- a/arch/cris/kernel/time.c
+++ b/arch/cris/kernel/time.c
@@ -1,5 +1,4 @@
-/* $Id: time.c,v 1.18 2005/03/04 08:16:17 starvik Exp $
- *
+/*
* linux/arch/cris/kernel/time.c
*
* Copyright (C) 1991, 1992, 1995 Linus Torvalds
@@ -18,11 +17,10 @@
* Linux/CRIS specific code:
*
* Authors: Bjorn Wesen
- * Johan Adolfsson
+ * Johan Adolfsson
*
*/
-#include <asm/rtc.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/param.h>
@@ -31,189 +29,40 @@
#include <linux/timex.h>
#include <linux/init.h>
#include <linux/profile.h>
+#include <linux/sched.h> /* just for sched_clock() - funny that */
-u64 jiffies_64 = INITIAL_JIFFIES;
-EXPORT_SYMBOL(jiffies_64);
-
-int have_rtc; /* used to remember if we have an RTC or not */;
+#define D(x)
#define TICK_SIZE tick
-extern unsigned long wall_jiffies;
extern unsigned long loops_per_jiffy; /* init/main.c */
unsigned long loops_per_usec;
-extern unsigned long do_slow_gettimeoffset(void);
-static unsigned long (*do_gettimeoffset)(void) = do_slow_gettimeoffset;
-
-/*
- * This version of gettimeofday has near microsecond resolution.
- *
- * Note: Division is quite slow on CRIS and do_gettimeofday is called
- * rather often. Maybe we should do some kind of approximation here
- * (a naive approximation would be to divide by 1024).
- */
-void do_gettimeofday(struct timeval *tv)
+int set_rtc_mmss(unsigned long nowtime)
{
- unsigned long flags;
- signed long usec, sec;
- local_irq_save(flags);
- local_irq_disable();
- usec = do_gettimeoffset();
- {
- unsigned long lost = jiffies - wall_jiffies;
- if (lost)
- usec += lost * (1000000 / HZ);
- }
-
- /*
- * If time_adjust is negative then NTP is slowing the clock
- * so make sure not to go into next possible interval.
- * Better to lose some accuracy than have time go backwards..
- */
- if (unlikely(time_adjust < 0) && usec > tickadj)
- usec = tickadj;
-
- sec = xtime.tv_sec;
- usec += xtime.tv_nsec / 1000;
- local_irq_restore(flags);
-
- while (usec >= 1000000) {
- usec -= 1000000;
- sec++;
- }
-
- tv->tv_sec = sec;
- tv->tv_usec = usec;
+ D(printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime));
+ return 0;
}
-EXPORT_SYMBOL(do_gettimeofday);
-
-int do_settimeofday(struct timespec *tv)
+/* grab the time from the RTC chip */
+unsigned long get_cmos_time(void)
{
- time_t wtm_sec, sec = tv->tv_sec;
- long wtm_nsec, nsec = tv->tv_nsec;
-
- 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
- * made, and then undo it!
- */
- nsec -= do_gettimeoffset() * NSEC_PER_USEC;
- nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
-
- wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
- wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec);
-
- set_normalized_timespec(&xtime, sec, nsec);
- set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec);
-
- time_adjust = 0; /* stop active adjtime() */
- time_status |= STA_UNSYNC;
- time_maxerror = NTP_PHASE_LIMIT;
- time_esterror = NTP_PHASE_LIMIT;
- write_sequnlock_irq(&xtime_lock);
- clock_was_set();
return 0;
}
-EXPORT_SYMBOL(do_settimeofday);
-
-/*
- * BUG: This routine does not handle hour overflow properly; it just
- * sets the minutes. Usually you'll only notice that after reboot!
- */
-
-int set_rtc_mmss(unsigned long nowtime)
+int update_persistent_clock(struct timespec now)
{
- int retval = 0;
- int real_seconds, real_minutes, cmos_minutes;
-
- printk(KERN_DEBUG "set_rtc_mmss(%lu)\n", nowtime);
-
- if(!have_rtc)
- return 0;
-
- cmos_minutes = CMOS_READ(RTC_MINUTES);
- BCD_TO_BIN(cmos_minutes);
-
- /*
- * since we're only adjusting minutes and seconds,
- * don't interfere with hour overflow. This avoids
- * messing with unknown time zones but requires your
- * RTC not to be off by more than 15 minutes
- */
- real_seconds = nowtime % 60;
- real_minutes = nowtime / 60;
- if (((abs(real_minutes - cmos_minutes) + 15)/30) & 1)
- real_minutes += 30; /* correct for half hour time zone */
- real_minutes %= 60;
-
- if (abs(real_minutes - cmos_minutes) < 30) {
- BIN_TO_BCD(real_seconds);
- BIN_TO_BCD(real_minutes);
- CMOS_WRITE(real_seconds,RTC_SECONDS);
- CMOS_WRITE(real_minutes,RTC_MINUTES);
- } else {
- printk(KERN_WARNING
- "set_rtc_mmss: can't update from %d to %d\n",
- cmos_minutes, real_minutes);
- retval = -1;
- }
-
- return retval;
+ return set_rtc_mmss(now.tv_sec);
}
-/* grab the time from the RTC chip */
-
-unsigned long
-get_cmos_time(void)
+void read_persistent_clock(struct timespec *ts)
{
- unsigned int year, mon, day, hour, min, sec;
-
- sec = CMOS_READ(RTC_SECONDS);
- min = CMOS_READ(RTC_MINUTES);
- hour = CMOS_READ(RTC_HOURS);
- day = CMOS_READ(RTC_DAY_OF_MONTH);
- mon = CMOS_READ(RTC_MONTH);
- year = CMOS_READ(RTC_YEAR);
-
- printk(KERN_DEBUG
- "rtc: sec 0x%x min 0x%x hour 0x%x day 0x%x mon 0x%x year 0x%x\n",
- sec, min, hour, day, mon, year);
-
- BCD_TO_BIN(sec);
- BCD_TO_BIN(min);
- BCD_TO_BIN(hour);
- BCD_TO_BIN(day);
- BCD_TO_BIN(mon);
- BCD_TO_BIN(year);
-
- if ((year += 1900) < 1970)
- year += 100;
-
- return mktime(year, mon, day, hour, min, sec);
+ ts->tv_sec = 0;
+ ts->tv_nsec = 0;
}
-/* update xtime from the CMOS settings. used when /dev/rtc gets a SET_TIME.
- * TODO: this doesn't reset the fancy NTP phase stuff as do_settimeofday does.
- */
-
-void
-update_xtime_from_cmos(void)
-{
- if(have_rtc) {
- xtime.tv_sec = get_cmos_time();
- xtime.tv_nsec = 0;
- }
-}
extern void cris_profile_sample(struct pt_regs* regs);
@@ -221,21 +70,19 @@ void
cris_do_profile(struct pt_regs* regs)
{
-#if CONFIG_SYSTEM_PROFILER
+#ifdef CONFIG_SYSTEM_PROFILER
cris_profile_sample(regs);
#endif
-#if CONFIG_PROFILING
- profile_tick(CPU_PROFILING, regs);
+#ifdef CONFIG_PROFILING
+ profile_tick(CPU_PROFILING);
#endif
}
-/*
- * Scheduler clock - returns current time in nanosec units.
- */
unsigned long long sched_clock(void)
{
- return (unsigned long long)jiffies * (1000000000 / HZ);
+ return (unsigned long long)jiffies * (NSEC_PER_SEC / HZ) +
+ get_ns_in_jiffie();
}
static int
diff --git a/arch/cris/kernel/traps.c b/arch/cris/kernel/traps.c
index 520d92205fe..0ffda73734f 100644
--- a/arch/cris/kernel/traps.c
+++ b/arch/cris/kernel/traps.c
@@ -1,66 +1,79 @@
-/* $Id: traps.c,v 1.11 2005/01/24 16:03:19 orjanf Exp $
- *
+/*
* linux/arch/cris/traps.c
*
- * Here we handle the break vectors not used by the system call
- * mechanism, as well as some general stack/register dumping
+ * Here we handle the break vectors not used by the system call
+ * mechanism, as well as some general stack/register dumping
* things.
- *
- * Copyright (C) 2000-2002 Axis Communications AB
+ *
+ * Copyright (C) 2000-2007 Axis Communications AB
*
* Authors: Bjorn Wesen
- * Hans-Peter Nilsson
+ * Hans-Peter Nilsson
*
*/
#include <linux/init.h>
#include <linux/module.h>
+
#include <asm/pgtable.h>
#include <asm/uaccess.h>
+#include <arch/system.h>
+
+extern void arch_enable_nmi(void);
+extern void stop_watchdog(void);
+extern void reset_watchdog(void);
+extern void show_registers(struct pt_regs *regs);
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+extern void handle_BUG(struct pt_regs *regs);
+#else
+#define handle_BUG(regs)
+#endif
static int kstack_depth_to_print = 24;
-extern int raw_printk(const char *fmt, ...);
+void (*nmi_handler)(struct pt_regs *);
-void show_trace(unsigned long * stack)
+void
+show_trace(unsigned long *stack)
{
unsigned long addr, module_start, module_end;
extern char _stext, _etext;
int i;
- raw_printk("\nCall Trace: ");
+ printk("\nCall Trace: ");
- i = 1;
- module_start = VMALLOC_START;
- module_end = VMALLOC_END;
+ i = 1;
+ module_start = VMALLOC_START;
+ module_end = VMALLOC_END;
- while (((long) stack & (THREAD_SIZE-1)) != 0) {
- if (__get_user (addr, stack)) {
+ while (((long)stack & (THREAD_SIZE-1)) != 0) {
+ if (__get_user(addr, stack)) {
/* This message matches "failing address" marked
s390 in ksymoops, so lines containing it will
not be filtered out by ksymoops. */
- raw_printk ("Failing address 0x%lx\n", (unsigned long)stack);
+ printk("Failing address 0x%lx\n", (unsigned long)stack);
break;
}
stack++;
- /*
- * If the address is either in the text segment of the
- * kernel, or in the region which contains vmalloc'ed
- * memory, it *may* be the address of a calling
- * routine; if so, print it so that someone tracing
- * down the cause of the crash will be able to figure
- * out the call path that was taken.
- */
- if (((addr >= (unsigned long) &_stext) &&
- (addr <= (unsigned long) &_etext)) ||
- ((addr >= module_start) && (addr <= module_end))) {
- if (i && ((i % 8) == 0))
- raw_printk("\n ");
- raw_printk("[<%08lx>] ", addr);
- i++;
- }
- }
+ /*
+ * If the address is either in the text segment of the
+ * kernel, or in the region which contains vmalloc'ed
+ * memory, it *may* be the address of a calling
+ * routine; if so, print it so that someone tracing
+ * down the cause of the crash will be able to figure
+ * out the call path that was taken.
+ */
+ if (((addr >= (unsigned long)&_stext) &&
+ (addr <= (unsigned long)&_etext)) ||
+ ((addr >= module_start) && (addr <= module_end))) {
+ if (i && ((i % 8) == 0))
+ printk("\n ");
+ printk("[<%08lx>] ", addr);
+ i++;
+ }
+ }
}
/*
@@ -78,109 +91,142 @@ void show_trace(unsigned long * stack)
* with the ksymoops maintainer.
*/
-void
+void
show_stack(struct task_struct *task, unsigned long *sp)
{
- unsigned long *stack, addr;
- int i;
+ unsigned long *stack, addr;
+ int i;
/*
* debugging aid: "show_stack(NULL);" prints a
* back trace.
*/
- if(sp == NULL) {
+ if (sp == NULL) {
if (task)
sp = (unsigned long*)task->thread.ksp;
else
sp = (unsigned long*)rdsp();
}
- stack = sp;
+ stack = sp;
- raw_printk("\nStack from %08lx:\n ", (unsigned long)stack);
- for(i = 0; i < kstack_depth_to_print; i++) {
- if (((long) stack & (THREAD_SIZE-1)) == 0)
- break;
- if (i && ((i % 8) == 0))
- raw_printk("\n ");
- if (__get_user (addr, stack)) {
+ printk("\nStack from %08lx:\n ", (unsigned long)stack);
+ for (i = 0; i < kstack_depth_to_print; i++) {
+ if (((long)stack & (THREAD_SIZE-1)) == 0)
+ break;
+ if (i && ((i % 8) == 0))
+ printk("\n ");
+ if (__get_user(addr, stack)) {
/* This message matches "failing address" marked
s390 in ksymoops, so lines containing it will
not be filtered out by ksymoops. */
- raw_printk ("Failing address 0x%lx\n", (unsigned long)stack);
+ printk("Failing address 0x%lx\n", (unsigned long)stack);
break;
}
stack++;
- raw_printk("%08lx ", addr);
- }
+ printk("%08lx ", addr);
+ }
show_trace(sp);
}
-static void (*nmi_handler)(struct pt_regs*);
-extern void arch_enable_nmi(void);
+#if 0
+/* displays a short stack trace */
-void set_nmi_handler(void (*handler)(struct pt_regs*))
+int
+show_stack(void)
{
- nmi_handler = handler;
- arch_enable_nmi();
+ unsigned long *sp = (unsigned long *)rdusp();
+ int i;
+
+ printk("Stack dump [0x%08lx]:\n", (unsigned long)sp);
+ for (i = 0; i < 16; i++)
+ printk("sp + %d: 0x%08lx\n", i*4, sp[i]);
+ return 0;
}
+#endif
-void handle_nmi(struct pt_regs* regs)
+void
+set_nmi_handler(void (*handler)(struct pt_regs *))
{
- if (nmi_handler)
- nmi_handler(regs);
+ nmi_handler = handler;
+ arch_enable_nmi();
}
#ifdef CONFIG_DEBUG_NMI_OOPS
-void oops_nmi_handler(struct pt_regs* regs)
+void
+oops_nmi_handler(struct pt_regs *regs)
{
- stop_watchdog();
- raw_printk("NMI!\n");
- show_registers(regs);
+ stop_watchdog();
+ oops_in_progress = 1;
+ printk("NMI!\n");
+ show_registers(regs);
+ oops_in_progress = 0;
}
-static int
-__init oops_nmi_register(void)
+static int __init
+oops_nmi_register(void)
{
- set_nmi_handler(oops_nmi_handler);
- return 0;
+ set_nmi_handler(oops_nmi_handler);
+ return 0;
}
__initcall(oops_nmi_register);
#endif
-#if 0
-/* displays a short stack trace */
-
-int
-show_stack()
+/*
+ * This gets called from entry.S when the watchdog has bitten. Show something
+ * similar to an Oops dump, and if the kernel is configured to be a nice
+ * doggy, then halt instead of reboot.
+ */
+void
+watchdog_bite_hook(struct pt_regs *regs)
{
- unsigned long *sp = (unsigned long *)rdusp();
- int i;
- raw_printk("Stack dump [0x%08lx]:\n", (unsigned long)sp);
- for(i = 0; i < 16; i++)
- raw_printk("sp + %d: 0x%08lx\n", i*4, sp[i]);
- return 0;
-}
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+ local_irq_disable();
+ stop_watchdog();
+ show_registers(regs);
+
+ while (1)
+ ; /* Do nothing. */
+#else
+ show_registers(regs);
#endif
+}
-void dump_stack(void)
+/* This is normally the Oops function. */
+void
+die_if_kernel(const char *str, struct pt_regs *regs, long err)
{
- show_stack(NULL, NULL);
-}
+ if (user_mode(regs))
+ return;
+
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+ /*
+ * This printout might take too long and could trigger
+ * the watchdog normally. If NICE_DOGGY is set, simply
+ * stop the watchdog during the printout.
+ */
+ stop_watchdog();
+#endif
-EXPORT_SYMBOL(dump_stack);
+ handle_BUG(regs);
-void __init
-trap_init(void)
-{
- /* Nothing needs to be done */
+ printk("%s: %04lx\n", str, err & 0xffff);
+
+ show_registers(regs);
+
+ oops_in_progress = 0;
+
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+ reset_watchdog();
+#endif
+ do_exit(SIGSEGV);
}
-void spinning_cpu(void* addr)
+void __init
+trap_init(void)
{
- raw_printk("CPU %d spinning on %X\n", smp_processor_id(), addr);
- dump_stack();
+ /* Nothing needs to be done */
}
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
new file mode 100644
index 00000000000..a68b983dcea
--- /dev/null
+++ b/arch/cris/kernel/vmlinux.lds.S
@@ -0,0 +1,132 @@
+/* ld script to make the Linux/CRIS kernel
+ * Authors: Bjorn Wesen (bjornw@axis.com)
+ *
+ * It is VERY DANGEROUS to fiddle around with the symbols in this
+ * script. It is for example quite vital that all generated sections
+ * that are used are actually named here, otherwise the linker will
+ * put them at the end, where the init stuff is which is FREED after
+ * the kernel has booted.
+ */
+
+#include <asm-generic/vmlinux.lds.h>
+#include <asm/page.h>
+
+#ifdef CONFIG_ETRAX_VMEM_SIZE
+#define __CONFIG_ETRAX_VMEM_SIZE CONFIG_ETRAX_VMEM_SIZE
+#else
+#define __CONFIG_ETRAX_VMEM_SIZE 0
+#endif
+
+
+jiffies = jiffies_64;
+SECTIONS
+{
+ . = DRAM_VIRTUAL_BASE;
+ dram_start = .;
+#ifdef CONFIG_ETRAX_ARCH_V10
+ ibr_start = .;
+#else
+ ebp_start = .;
+ /* The boot section is only necessary until the VCS top */
+ /* level testbench includes both flash and DRAM. */
+ .boot : { *(.boot) }
+#endif
+
+ /* see head.S and pages reserved at the start */
+ . = DRAM_VIRTUAL_BASE + 0x4000;
+
+ _text = .; /* Text and read-only data. */
+ text_start = .; /* Lots of aliases. */
+ _stext = .;
+ __stext = .;
+ .text : {
+ TEXT_TEXT
+ SCHED_TEXT
+ LOCK_TEXT
+ *(.fixup)
+ *(.text.__*)
+ }
+
+ _etext = . ; /* End of text section. */
+ __etext = .;
+
+ EXCEPTION_TABLE(4)
+
+ _sdata = .;
+ RODATA
+
+ . = ALIGN (4);
+ ___data_start = . ;
+ __Sdata = . ;
+ .data : { /* Data */
+ CACHELINE_ALIGNED_DATA(32)
+ READ_MOSTLY_DATA(32)
+ DATA_DATA
+ }
+ __edata = . ; /* End of data section. */
+ _edata = . ;
+
+ INIT_TASK_DATA_SECTION(PAGE_SIZE)
+
+ . = ALIGN(PAGE_SIZE); /* Init code and data. */
+ __init_begin = .;
+ INIT_TEXT_SECTION(PAGE_SIZE)
+ .init.data : { INIT_DATA }
+ .init.setup : { INIT_SETUP(16) }
+ .initcall.init : {
+ INIT_CALLS
+ }
+
+ .con_initcall.init : {
+ CON_INITCALL
+ }
+ SECURITY_INIT
+
+ /* .exit.text is discarded at runtime, not link time,
+ * to deal with references from __bug_table
+ */
+ .exit.text : {
+ EXIT_TEXT
+ }
+ .exit.data : {
+ EXIT_DATA
+ }
+
+#ifdef CONFIG_ETRAX_ARCH_V10
+#ifdef CONFIG_BLK_DEV_INITRD
+ .init.ramfs : {
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+ }
+#endif
+#endif
+ __vmlinux_end = .; /* Last address of the physical file. */
+#ifdef CONFIG_ETRAX_ARCH_V32
+ PERCPU_SECTION(32)
+
+ .init.ramfs : {
+ INIT_RAM_FS
+ }
+#endif
+
+ /*
+ * We fill to the next page, so we can discard all init
+ * pages without needing to consider what payload might be
+ * appended to the kernel image.
+ */
+ . = ALIGN(PAGE_SIZE);
+
+ __init_end = .;
+
+ __data_end = . ; /* Move to _edata ? */
+ BSS_SECTION(1, 1, 1)
+
+ . = ALIGN (0x20);
+ _end = .;
+ __end = .;
+
+ dram_end = dram_start + (CONFIG_ETRAX_DRAM_SIZE - __CONFIG_ETRAX_VMEM_SIZE)*1024*1024;
+
+ DISCARDS
+}
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