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gerrit-public.fairphone.software / kernel / msm-4.19 / 9d23f9e946ad757344792a20ba5152f3a921688b / . / include / linux / reboot.h
blob: e0879a70e830e29847cc9ba9b9f4d6851d8e3c4d [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1#ifndef _LINUX_REBOOT_H
2#define _LINUX_REBOOT_H
3
4/*
5 * Magic values required to use _reboot() system call.
6 */
7
8#define LINUX_REBOOT_MAGIC1 0xfee1dead
9#define LINUX_REBOOT_MAGIC2 672274793
10#define LINUX_REBOOT_MAGIC2A 85072278
11#define LINUX_REBOOT_MAGIC2B 369367448
12#define LINUX_REBOOT_MAGIC2C 537993216
13
14
15/*
16 * Commands accepted by the _reboot() system call.
17 *
18 * RESTART Restart system using default command and mode.
19 * HALT Stop OS and give system control to ROM monitor, if any.
20 * CAD_ON Ctrl-Alt-Del sequence causes RESTART command.
21 * CAD_OFF Ctrl-Alt-Del sequence sends SIGINT to init task.
22 * POWER_OFF Stop OS and remove all power from system, if possible.
23 * RESTART2 Restart system using given command string.
24 * SW_SUSPEND Suspend system using software suspend if compiled in.
25 * KEXEC Restart system using a previously loaded Linux kernel
26 */
27
28#define LINUX_REBOOT_CMD_RESTART 0x01234567
29#define LINUX_REBOOT_CMD_HALT 0xCDEF0123
30#define LINUX_REBOOT_CMD_CAD_ON 0x89ABCDEF
31#define LINUX_REBOOT_CMD_CAD_OFF 0x00000000
32#define LINUX_REBOOT_CMD_POWER_OFF 0x4321FEDC
33#define LINUX_REBOOT_CMD_RESTART2 0xA1B2C3D4
34#define LINUX_REBOOT_CMD_SW_SUSPEND 0xD000FCE2
35#define LINUX_REBOOT_CMD_KEXEC 0x45584543
36
37
38#ifdef __KERNEL__
39
40#include <linux/notifier.h>
41
Amerigo Wangc5f41752011-07-25 17:13:10 -0700[diff] [blame]42#define SYS_DOWN 0x0001 /* Notify of system down */
43#define SYS_RESTART SYS_DOWN
44#define SYS_HALT 0x0002 /* Notify of system halt */
45#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
46
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]47extern int register_reboot_notifier(struct notifier_block *);
48extern int unregister_reboot_notifier(struct notifier_block *);
49
50
51/*
52 * Architecture-specific implementations of sys_reboot commands.
53 */
54
55extern void machine_restart(char *cmd);
56extern void machine_halt(void);
57extern void machine_power_off(void);
58
Eric W. Biedermandc009d92005-06-25 14:57:52 -0700[diff] [blame]59extern void machine_shutdown(void);
Alexander Nyberg6e274d12005-06-25 14:58:26 -0700[diff] [blame]60struct pt_regs;
61extern void machine_crash_shutdown(struct pt_regs *);
Eric W. Biedermandc009d92005-06-25 14:57:52 -0700[diff] [blame]62
Eric W. Biederman4a00ea12005-07-26 11:24:14 -0600[diff] [blame]63/*
64 * Architecture independent implemenations of sys_reboot commands.
65 */
66
Huang Yingca195b72008-08-15 00:40:24 -0700[diff] [blame]67extern void kernel_restart_prepare(char *cmd);
Eric W. Biederman4a00ea12005-07-26 11:24:14 -0600[diff] [blame]68extern void kernel_restart(char *cmd);
69extern void kernel_halt(void);
70extern void kernel_power_off(void);
Adrian Bunk83cc5ed2006-06-25 05:47:41 -0700[diff] [blame]71
Dave Youngeb5572f2010-03-10 15:23:59 -0800[diff] [blame]72extern int C_A_D; /* for sysctl */
Adrian Bunk83cc5ed2006-06-25 05:47:41 -0700[diff] [blame]73void ctrl_alt_del(void);
Eric W. Biederman4a00ea12005-07-26 11:24:14 -0600[diff] [blame]74
Jeremy Fitzhardinge10a0a8d2007-07-17 18:37:02 -0700[diff] [blame]75#define POWEROFF_CMD_PATH_LEN 256
76extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
77
78extern int orderly_poweroff(bool force);
79
Eric W. Biederman7c903472005-07-26 11:29:55 -0600[diff] [blame]80/*
81 * Emergency restart, callable from an interrupt handler.
82 */
83
84extern void emergency_restart(void);
85#include <asm/emergency-restart.h>
86
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]87#endif
88
89#endif /* _LINUX_REBOOT_H */