blob: eba7d918162a55c2b331d016900ed08426ba1c71 [file] [log] [blame]
David S. Millercdb35922008-09-01 19:31:16 -07001/* 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>
Paul Gortmaker066bcac2011-07-22 13:18:16 -04007#include <linux/export.h>
David S. Millercdb35922008-09-01 19:31:16 -07008#include <linux/pm.h>
9
David S. Millercdb35922008-09-01 19:31:16 -070010#include <asm/oplib.h>
11#include <asm/prom.h>
David Howellsd550bbd2012-03-28 18:30:03 +010012#include <asm/setup.h>
David S. Millercdb35922008-09-01 19:31:16 -070013
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{
David S. Millercdb35922008-09-01 19:31:16 -070027 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{
David S. Millercdb35922008-09-01 19:31:16 -070035 prom_halt();
36 panic("Halt failed!");
37}
38
39void machine_restart(char *cmd)
40{
41 char *p;
42
David S. Millercdb35922008-09-01 19:31:16 -070043 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