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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
View file

@ -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)

25
arch/arm/mach-pxa/corgi.c
View file

@ -19,6 +19,7 @@
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <asm/setup.h>
#include <asm/memory.h>
@ -26,6 +27,7 @@
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@ -310,8 +312,31 @@ static struct platform_device *devices[] __initdata = {
&corgiled_device,
};
static void corgi_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED off tells the bootloader to halt */
reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
arm_machine_restart('h');
}
static void corgi_restart(char mode)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
if (!machine_is_corgi())
/* Green LED on tells the bootloader to reboot */
set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_LED_GREEN);
arm_machine_restart('h');
}
static void __init corgi_init(void)
{
pm_power_off = corgi_poweroff;
arm_pm_restart = corgi_restart;
/* setup sleep mode values */
PWER = 0x00000002;
PFER = 0x00000000;

17
arch/arm/mach-pxa/poodle.c
View file

@ -18,11 +18,13 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/fb.h>
#include <linux/pm.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/setup.h>
#include <asm/system.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@ -247,10 +249,25 @@ static struct platform_device *devices[] __initdata = {
&poodle_scoop_device,
};
static void poodle_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
arm_machine_restart('h');
}
static void poodle_restart(char mode)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
arm_machine_restart('h');
}
static void __init poodle_init(void)
{
int ret = 0;
pm_power_off = poodle_poweroff;
arm_pm_restart = poodle_restart;
/* setup sleep mode values */
PWER = 0x00000002;
PFER = 0x00000000;

25
arch/arm/mach-pxa/spitz.c
View file

@ -20,6 +20,7 @@
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <asm/setup.h>
#include <asm/memory.h>
@ -27,6 +28,7 @@
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@ -432,8 +434,31 @@ static struct platform_device *devices[] __initdata = {
&spitzled_device,
};
static void spitz_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
pxa_gpio_mode(SPITZ_GPIO_ON_RESET | GPIO_OUT);
GPSR(SPITZ_GPIO_ON_RESET) = GPIO_bit(SPITZ_GPIO_ON_RESET);
mdelay(1000);
arm_machine_restart('h');
}
static void spitz_restart(char mode)
{
/* Bootloader magic for a reboot */
if((MSC0 & 0xffff0000) == 0x7ff00000)
MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
spitz_poweroff();
}
static void __init common_init(void)
{
pm_power_off = spitz_poweroff;
arm_pm_restart = spitz_restart;
PMCR = 0x00;
/* setup sleep mode values */

25
arch/arm/mach-pxa/tosa.c
View file

@ -19,12 +19,14 @@
#include <linux/fs.h>
#include <linux/interrupt.h>
#include <linux/mmc/host.h>
#include <linux/pm.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/arch/irda.h>
#include <asm/arch/mmc.h>
#include <asm/arch/udc.h>
@ -266,8 +268,31 @@ static struct platform_device *devices[] __initdata = {
&tosaled_device,
};
static void tosa_poweroff(void)
{
RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_OUT);
GPSR(TOSA_GPIO_ON_RESET) = GPIO_bit(TOSA_GPIO_ON_RESET);
mdelay(1000);
arm_machine_restart('h');
}
static void tosa_restart(char mode)
{
/* Bootloader magic for a reboot */
if((MSC0 & 0xffff0000) == 0x7ff00000)
MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
tosa_poweroff();
}
static void __init tosa_init(void)
{
pm_power_off = tosa_poweroff;
arm_pm_restart = tosa_restart;
pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_IN);
pxa_gpio_mode(TOSA_GPIO_TC6393_INT | GPIO_IN);
pxa_gpio_mode(TOSA_GPIO_USB_IN | GPIO_IN);

1
include/asm-arm/arch-pxa/system.h
View file

@ -10,6 +10,7 @@
* published by the Free Software Foundation.
*/
#include <asm/proc-fns.h>
#include "hardware.h"
#include "pxa-regs.h"

3
include/asm-arm/system.h
View file

@ -108,6 +108,9 @@ extern void __show_regs(struct pt_regs *);
extern int cpu_architecture(void);
extern void cpu_init(void);
void arm_machine_restart(char mode);
extern void (*arm_pm_restart)(char str);
/*
* Intel's XScale3 core supports some v6 features (supersections, L2)
* but advertises itself as v5 as it does not support the v6 ISA. For