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 
9 struct 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 
16 enum reboot_mode {
17 	REBOOT_UNDEFINED = -1,
18 	REBOOT_COLD = 0,
19 	REBOOT_WARM,
20 	REBOOT_HARD,
21 	REBOOT_SOFT,
22 	REBOOT_GPIO,
23 };
24 extern enum reboot_mode reboot_mode;
25 extern enum reboot_mode panic_reboot_mode;
26 
27 enum reboot_type {
28 	BOOT_TRIPLE	= 't',
29 	BOOT_KBD	= 'k',
30 	BOOT_BIOS	= 'b',
31 	BOOT_ACPI	= 'a',
32 	BOOT_EFI	= 'e',
33 	BOOT_CF9_FORCE	= 'p',
34 	BOOT_CF9_SAFE	= 'q',
35 };
36 extern enum reboot_type reboot_type;
37 
38 extern int reboot_default;
39 extern int reboot_cpu;
40 extern int reboot_force;
41 
42 
43 extern int register_reboot_notifier(struct notifier_block *);
44 extern int unregister_reboot_notifier(struct notifier_block *);
45 
46 extern int devm_register_reboot_notifier(struct device *, struct notifier_block *);
47 
48 extern int register_restart_handler(struct notifier_block *);
49 extern int unregister_restart_handler(struct notifier_block *);
50 extern void do_kernel_restart(char *cmd);
51 
52 /*
53  * Architecture-specific implementations of sys_reboot commands.
54  */
55 
56 extern void migrate_to_reboot_cpu(void);
57 extern void machine_restart(char *cmd);
58 extern void machine_halt(void);
59 extern void machine_power_off(void);
60 
61 extern void machine_shutdown(void);
62 struct pt_regs;
63 extern void machine_crash_shutdown(struct pt_regs *);
64 
65 /*
66  * Architecture independent implemenations of sys_reboot commands.
67  */
68 
69 extern void kernel_restart_prepare(char *cmd);
70 extern void kernel_restart(char *cmd);
71 extern void kernel_halt(void);
72 extern void kernel_power_off(void);
73 
74 extern int C_A_D; /* for sysctl */
75 void ctrl_alt_del(void);
76 
77 #define POWEROFF_CMD_PATH_LEN	256
78 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
79 
80 extern void orderly_poweroff(bool force);
81 extern void orderly_reboot(void);
82 void hw_protection_shutdown(const char *reason, int ms_until_forced);
83 
84 /*
85  * Emergency restart, callable from an interrupt handler.
86  */
87 
88 extern void emergency_restart(void);
89 #include <asm/emergency-restart.h>
90 
91 #endif /* _LINUX_REBOOT_H */
92