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authorPaul Mackerras <paulus@samba.org>2008-01-31 11:25:51 +1100
committerPaul Mackerras <paulus@samba.org>2008-01-31 11:25:51 +1100
commitbd45ac0c5daae35e7c71138172e63df5cf644cf6 (patch)
tree5eb5a599bf6a9d7a8a34e802db932aa9e9555de4 /arch/x86/kernel/reboot_64.c
parent4eece4ccf997c0e6d8fdad3d842e37b16b8d705f (diff)
parent5bdeae46be6dfe9efa44a548bd622af325f4bdb4 (diff)
Merge branch 'linux-2.6'
Diffstat (limited to 'arch/x86/kernel/reboot_64.c')
-rw-r--r--arch/x86/kernel/reboot_64.c176
1 files changed, 0 insertions, 176 deletions
diff --git a/arch/x86/kernel/reboot_64.c b/arch/x86/kernel/reboot_64.c
deleted file mode 100644
index 53620a92a8f..00000000000
--- a/arch/x86/kernel/reboot_64.c
+++ /dev/null
@@ -1,176 +0,0 @@
-/* Various gunk just to reboot the machine. */
-#include <linux/module.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/smp.h>
-#include <linux/kernel.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/pm.h>
-#include <linux/kdebug.h>
-#include <linux/sched.h>
-#include <asm/io.h>
-#include <asm/delay.h>
-#include <asm/desc.h>
-#include <asm/hw_irq.h>
-#include <asm/system.h>
-#include <asm/pgtable.h>
-#include <asm/tlbflush.h>
-#include <asm/apic.h>
-#include <asm/hpet.h>
-#include <asm/gart.h>
-
-/*
- * Power off function, if any
- */
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-static long no_idt[3];
-static enum {
- BOOT_TRIPLE = 't',
- BOOT_KBD = 'k'
-} reboot_type = BOOT_KBD;
-static int reboot_mode = 0;
-int reboot_force;
-
-/* reboot=t[riple] | k[bd] [, [w]arm | [c]old]
- warm Don't set the cold reboot flag
- cold Set the cold reboot flag
- triple Force a triple fault (init)
- kbd Use the keyboard controller. cold reset (default)
- force Avoid anything that could hang.
- */
-static int __init reboot_setup(char *str)
-{
- for (;;) {
- switch (*str) {
- case 'w':
- reboot_mode = 0x1234;
- break;
-
- case 'c':
- reboot_mode = 0;
- break;
-
- case 't':
- case 'b':
- case 'k':
- reboot_type = *str;
- break;
- case 'f':
- reboot_force = 1;
- break;
- }
- if((str = strchr(str,',')) != NULL)
- str++;
- else
- break;
- }
- return 1;
-}
-
-__setup("reboot=", reboot_setup);
-
-static inline void kb_wait(void)
-{
- int i;
-
- for (i=0; i<0x10000; i++)
- if ((inb_p(0x64) & 0x02) == 0)
- break;
-}
-
-void machine_shutdown(void)
-{
- unsigned long flags;
-
- /* Stop the cpus and apics */
-#ifdef CONFIG_SMP
- int reboot_cpu_id;
-
- /* The boot cpu is always logical cpu 0 */
- reboot_cpu_id = 0;
-
- /* Make certain the cpu I'm about to reboot on is online */
- if (!cpu_isset(reboot_cpu_id, cpu_online_map)) {
- reboot_cpu_id = smp_processor_id();
- }
-
- /* Make certain I only run on the appropriate processor */
- set_cpus_allowed(current, cpumask_of_cpu(reboot_cpu_id));
-
- /* O.K Now that I'm on the appropriate processor,
- * stop all of the others.
- */
- smp_send_stop();
-#endif
-
- local_irq_save(flags);
-
-#ifndef CONFIG_SMP
- disable_local_APIC();
-#endif
-
- disable_IO_APIC();
-
-#ifdef CONFIG_HPET_TIMER
- hpet_disable();
-#endif
- local_irq_restore(flags);
-
- pci_iommu_shutdown();
-}
-
-void machine_emergency_restart(void)
-{
- int i;
-
- /* Tell the BIOS if we want cold or warm reboot */
- *((unsigned short *)__va(0x472)) = reboot_mode;
-
- for (;;) {
- /* Could also try the reset bit in the Hammer NB */
- switch (reboot_type) {
- case BOOT_KBD:
- for (i=0; i<10; i++) {
- kb_wait();
- udelay(50);
- outb(0xfe,0x64); /* pulse reset low */
- udelay(50);
- }
-
- case BOOT_TRIPLE:
- load_idt((const struct desc_ptr *)&no_idt);
- __asm__ __volatile__("int3");
-
- reboot_type = BOOT_KBD;
- break;
- }
- }
-}
-
-void machine_restart(char * __unused)
-{
- printk("machine restart\n");
-
- if (!reboot_force) {
- machine_shutdown();
- }
- machine_emergency_restart();
-}
-
-void machine_halt(void)
-{
-}
-
-void machine_power_off(void)
-{
- if (pm_power_off) {
- if (!reboot_force) {
- machine_shutdown();
- }
- pm_power_off();
- }
-}
-