reboot.c

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/* reboot.c: reboot/shutdown/halt/poweroff handling
 *
 * Copyright (C) 2008 David S. Miller <[email protected]>
 */
#include <linux/kernel.h>
#include <linux/reboot.h>
#include <linux/export.h>
#include <linux/pm.h>

#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/setup.h>

/* sysctl - toggle power-off restriction for serial console
 * systems in machine_power_off()
 */
int scons_pwroff = 1;

/* This isn't actually used, it exists merely to satisfy the
 * reference in kernel/sys.c
 */
void (*pm_power_off)(void) = machine_power_off;
EXPORT_SYMBOL(pm_power_off);

void machine_power_off(void)
{
    if (strcmp(of_console_device->type, "serial") || scons_pwroff)
        prom_halt_power_off();

    prom_halt();
}

void machine_halt(void)
{
    prom_halt();
    panic("Halt failed!");
}

void machine_restart(char *cmd)
{
    char *p;

    p = strchr(reboot_command, '\n');
    if (p)
        *p = 0;
    if (cmd)
        prom_reboot(cmd);
    if (*reboot_command)
        prom_reboot(reboot_command);
    prom_reboot("");
    panic("Reboot failed!");
}