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
42 extern int register_reboot_notifier(struct notifier_block *);
43 extern int unregister_reboot_notifier(struct notifier_block *);
44
45
46 /*
47 * Architecture-specific implementations of sys_reboot commands.
48 */
49
50 extern void machine_restart(char *cmd);
51 extern void machine_halt(void);
52 extern void machine_power_off(void);
53
54 extern void machine_shutdown(void);
55 struct pt_regs;
56 extern void machine_crash_shutdown(struct pt_regs *);
57
58 /*
59 * Architecture independent implemenations of sys_reboot commands.
60 */
61
62 extern void kernel_restart(char *cmd);
63 extern void kernel_halt(void);
64 extern void kernel_power_off(void);
65
66 void ctrl_alt_del(void);
67
68 #define POWEROFF_CMD_PATH_LEN 256
69 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
70
71 extern int orderly_poweroff(bool force);
72
73 /*
74 * Emergency restart, callable from an interrupt handler.
75 */
76
77 extern void emergency_restart(void);
78 #include <asm/emergency-restart.h>
79
80 #endif
81
82 #endif /* _LINUX_REBOOT_H */
83
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