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 83 /* 84 * Emergency restart, callable from an interrupt handler. 85 */ 86 87 extern void emergency_restart(void); 88 #include <asm/emergency-restart.h> 89 90 #endif /* _LINUX_REBOOT_H */ 91