LXR linux/arch/sparc/kernel/reboot.c

   1/* reboot.c: reboot/shutdown/halt/poweroff handling
   2 *
   3 * Copyright (C) 2008 David S. Miller <davem@davemloft.net>
   4 */
   5#include <linux/kernel.h>
   6#include <linux/reboot.h>
   7#include <linux/export.h>
   8#include <linux/pm.h>
   9
  10#include <asm/oplib.h>
  11#include <asm/prom.h>
  12#include <asm/setup.h>
  13
  14/* sysctl - toggle power-off restriction for serial console
  15 * systems in machine_power_off()
  16 */
  17int scons_pwroff = 1;
  18
  19/* This isn't actually used, it exists merely to satisfy the
  20 * reference in kernel/sys.c
  21 */
  22void (*pm_power_off)(void) = machine_power_off;
  23EXPORT_SYMBOL(pm_power_off);
  24
  25void machine_power_off(void)
  26{
  27        if (strcmp(of_console_device->type, "serial") || scons_pwroff)
  28                prom_halt_power_off();
  29
  30        prom_halt();
  31}
  32
  33void machine_halt(void)
  34{
  35        prom_halt();
  36        panic("Halt failed!");
  37}
  38
  39void machine_restart(char *cmd)
  40{
  41        char *p;
  42
  43        p = strchr(reboot_command, '\n');
  44        if (p)
  45                *p = 0;
  46        if (cmd)
  47                prom_reboot(cmd);
  48        if (*reboot_command)
  49                prom_reboot(reboot_command);
  50        prom_reboot("");
  51        panic("Reboot failed!");
  52}
  53
  54