projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 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> | |
| 066bcaca | 7 | #include <linux/export.h> |
| cdb3592a DM |
8 | #include <linux/pm.h> |
| 9 | ||
| cdb3592a DM |
10 | #include <asm/oplib.h> |
| 11 | #include <asm/prom.h> | |
| d550bbd4 | 12 | #include <asm/setup.h> |
| cdb3592a DM |
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 |