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_COLD = 0,
18 	REBOOT_WARM,
19 	REBOOT_HARD,
20 	REBOOT_SOFT,
21 	REBOOT_GPIO,
22 };
23 extern enum reboot_mode reboot_mode;
24 
25 enum 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 };
34 extern enum reboot_type reboot_type;
35 
36 extern int reboot_default;
37 extern int reboot_cpu;
38 extern int reboot_force;
39 
40 
41 extern int register_reboot_notifier(struct notifier_block *);
42 extern int unregister_reboot_notifier(struct notifier_block *);
43 
44 extern int devm_register_reboot_notifier(struct device *, struct notifier_block *);
45 
46 extern int register_restart_handler(struct notifier_block *);
47 extern int unregister_restart_handler(struct notifier_block *);
48 extern void do_kernel_restart(char *cmd);
49 
50 /*
51  * Architecture-specific implementations of sys_reboot commands.
52  */
53 
54 extern void migrate_to_reboot_cpu(void);
55 extern void machine_restart(char *cmd);
56 extern void machine_halt(void);
57 extern void machine_power_off(void);
58 
59 extern void machine_shutdown(void);
60 struct pt_regs;
61 extern void machine_crash_shutdown(struct pt_regs *);
62 
63 /*
64  * Architecture independent implemenations of sys_reboot commands.
65  */
66 
67 extern void kernel_restart_prepare(char *cmd);
68 extern void kernel_restart(char *cmd);
69 extern void kernel_halt(void);
70 extern void kernel_power_off(void);
71 
72 extern int C_A_D; /* for sysctl */
73 void ctrl_alt_del(void);
74 
75 #define POWEROFF_CMD_PATH_LEN	256
76 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN];
77 
78 extern void orderly_poweroff(bool force);
79 extern void orderly_reboot(void);
80 
81 /*
82  * Emergency restart, callable from an interrupt handler.
83  */
84 
85 extern void emergency_restart(void);
86 #include <asm/emergency-restart.h>
87 
88 #endif /* _LINUX_REBOOT_H */
89