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cdb3592a DM |
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 | ||
17f04fbb | 10 | #include <asm/system.h> |
cdb3592a DM |
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 | { | |
cdb3592a DM |
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 | { | |
cdb3592a DM |
35 | prom_halt(); |
36 | panic("Halt failed!"); | |
37 | } | |
38 | ||
39 | void machine_restart(char *cmd) | |
40 | { | |
41 | char *p; | |
42 | ||
cdb3592a DM |
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 |