1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_REBOOT_H
3 #define _LINUX_REBOOT_H
6 #include <linux/notifier.h>
7 #include <uapi/linux/reboot.h>
9 #define SYS_DOWN 0x0001 /* Notify of system down */
10 #define SYS_RESTART SYS_DOWN
11 #define SYS_HALT 0x0002 /* Notify of system halt */
12 #define SYS_POWER_OFF 0x0003 /* Notify of system power off */
21 extern enum reboot_mode reboot_mode;
32 extern enum reboot_type reboot_type;
34 extern int reboot_default;
35 extern int reboot_cpu;
36 extern int reboot_force;
39 extern int register_reboot_notifier(struct notifier_block *);
40 extern int unregister_reboot_notifier(struct notifier_block *);
42 extern int register_restart_handler(struct notifier_block *);
43 extern int unregister_restart_handler(struct notifier_block *);
44 extern void do_kernel_restart(char *cmd);
47 * Architecture-specific implementations of sys_reboot commands.
50 extern void migrate_to_reboot_cpu(void);
51 extern void machine_restart(char *cmd);
52 extern void machine_halt(void);
53 extern void machine_power_off(void);
55 extern void machine_shutdown(void);
57 extern void machine_crash_shutdown(struct pt_regs *);
60 * Architecture independent implemenations of sys_reboot commands.
63 extern void kernel_restart_prepare(char *cmd);
64 extern void kernel_restart(char *cmd);
65 extern void kernel_halt(void);
66 extern void kernel_power_off(void);
68 extern int C_A_D; /* for sysctl */
69 void ctrl_alt_del(void);
71 #define POWEROFF_CMD_PATH_LEN 256
72 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
74 extern void orderly_poweroff(bool force);
75 extern void orderly_reboot(void);
78 * Emergency restart, callable from an interrupt handler.
81 extern void emergency_restart(void);
82 #include <asm/emergency-restart.h>
84 #endif /* _LINUX_REBOOT_H */