1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_REBOOT_H
3#define _LINUX_REBOOT_H
4
5
6#include <linux/notifier.h>
7#include <uapi/linux/reboot.h>
8
9struct device;
10
11#define SYS_DOWN 0x0001 /* Notify of system down */
12#define SYS_RESTART SYS_DOWN
13#define SYS_HALT 0x0002 /* Notify of system halt */
14#define SYS_POWER_OFF 0x0003 /* Notify of system power off */
15
16enum reboot_mode {
17 REBOOT_COLD = 0,
18 REBOOT_WARM,
19 REBOOT_HARD,
20 REBOOT_SOFT,
21 REBOOT_GPIO,
22};
23extern enum reboot_mode reboot_mode;
24
25enum reboot_type {
26 BOOT_TRIPLE = 't',
27 BOOT_KBD = 'k',
28 BOOT_BIOS = 'b',
29 BOOT_ACPI = 'a',
30 BOOT_EFI = 'e',
31 BOOT_CF9_FORCE = 'p',
32 BOOT_CF9_SAFE = 'q',
33};
34extern enum reboot_type reboot_type;
35
36extern int reboot_default;
37extern int reboot_cpu;
38extern int reboot_force;
39
40
41extern int register_reboot_notifier(struct notifier_block *);
42extern int unregister_reboot_notifier(struct notifier_block *);
43
44extern int devm_register_reboot_notifier(struct device *, struct notifier_block *);
45
46extern int register_restart_handler(struct notifier_block *);
47extern int unregister_restart_handler(struct notifier_block *);
48extern void do_kernel_restart(char *cmd);
49
50/*
51 * Architecture-specific implementations of sys_reboot commands.
52 */
53
54extern void migrate_to_reboot_cpu(void);
55extern void machine_restart(char *cmd);
56extern void machine_halt(void);
57extern void machine_power_off(void);
58
59extern void machine_shutdown(void);
60struct pt_regs;
61extern void machine_crash_shutdown(struct pt_regs *);
62
63/*
64 * Architecture independent implemenations of sys_reboot commands.
65 */
66
67extern void kernel_restart_prepare(char *cmd);
68extern void kernel_restart(char *cmd);
69extern void kernel_halt(void);
70extern void kernel_power_off(void);
71
72extern int C_A_D; /* for sysctl */
73void ctrl_alt_del(void);
74
75#define POWEROFF_CMD_PATH_LEN 256
76extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
77
78extern void orderly_poweroff(bool force);
79extern void orderly_reboot(void);
80
81/*
82 * Emergency restart, callable from an interrupt handler.
83 */
84
85extern void emergency_restart(void);
86#include <asm/emergency-restart.h>
87
88#endif /* _LINUX_REBOOT_H */
89