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[ARM] 3593/1: Add reboot and shutdown handlers for Zaurus handhelds

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Patch from Richard Purdie

Add functionality to allow machine specific reboot handlers on ARM.
Add machine specific reboot and poweroff handlers for all PXA Zaurus
models.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Richard Purdie
2006-06-19 19:57:12 +01:00
committed by Russell King
parent b7408aff2d
commit 74617fb6b8
7 changed files with 131 additions and 26 deletions
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61
arch/arm/kernel/process.c
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@ -28,6 +28,7 @@
#include <linux/init.h>
#include <linux/cpu.h>
#include <linux/elfcore.h>
#include <linux/pm.h>
#include <asm/leds.h>
#include <asm/processor.h>
@ -71,8 +72,36 @@ static int __init hlt_setup(char *__unused)
__setup("nohlt", nohlt_setup);
__setup("hlt", hlt_setup);
void arm_machine_restart(char mode)
{
/*
* 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(mode);
/*
* Now call the architecture specific reboot code.
*/
arch_reset(mode);
/*
* Whoops - the architecture was unable to reboot.
* Tell the user!
*/
mdelay(1000);
printk("Reboot failed -- System halted\n");
while (1);
}
/*
* The following aren't currently used.
* Function pointers to optional machine specific functions
*/
void (*pm_idle)(void);
EXPORT_SYMBOL(pm_idle);
@ -80,6 +109,10 @@ EXPORT_SYMBOL(pm_idle);
void (*pm_power_off)(void);
EXPORT_SYMBOL(pm_power_off);
void (*arm_pm_restart)(char str) = arm_machine_restart;
EXPORT_SYMBOL_GPL(arm_pm_restart);
/*
* This is our default idle handler. We need to disable
* interrupts here to ensure we don't miss a wakeup call.
@ -151,33 +184,9 @@ void machine_power_off(void)
pm_power_off();
}
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);
/*
* Now call the architecture specific reboot code.
*/
arch_reset(reboot_mode);
/*
* Whoops - the architecture was unable to reboot.
* Tell the user!
*/
mdelay(1000);
printk("Reboot failed -- System halted\n");
while (1);
arm_pm_restart(reboot_mode);
}
void __show_regs(struct pt_regs *regs)