Merge branch 'core/debugobjects' into core/urgent
[linux-2.6] / 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/module.h>
8 #include <linux/pm.h>
9
10 #include <asm/system.h>
11 #include <asm/oplib.h>
12 #include <asm/prom.h>
13
14 /* sysctl - toggle power-off restriction for serial console
15  * systems in machine_power_off()
16  */
17 int scons_pwroff = 1;
18
19 /* This isn't actually used, it exists merely to satisfy the
20  * reference in kernel/sys.c
21  */
22 void (*pm_power_off)(void) = machine_power_off;
23 EXPORT_SYMBOL(pm_power_off);
24
25 void 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
33 void machine_halt(void)
34 {
35         prom_halt();
36         panic("Halt failed!");
37 }
38
39 void 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