#ifndef _LINUX_REBOOT_H #define _LINUX_REBOOT_H /* * Magic values required to use _reboot() system call. */ #define LINUX_REBOOT_MAGIC1 0xfee1dead #define LINUX_REBOOT_MAGIC2 672274793 #define LINUX_REBOOT_MAGIC2A 85072278 #define LINUX_REBOOT_MAGIC2B 369367448 #define LINUX_REBOOT_MAGIC2C 537993216 /* * Commands accepted by the _reboot() system call. * * RESTART Restart system using default command and mode. * HALT Stop OS and give system control to ROM monitor, if any. * CAD_ON Ctrl-Alt-Del sequence causes RESTART command. * CAD_OFF Ctrl-Alt-Del sequence sends SIGINT to init task. * POWER_OFF Stop OS and remove all power from system, if possible. * RESTART2 Restart system using given command string. * SW_SUSPEND Suspend system using software suspend if compiled in. * KEXEC Restart system using a previously loaded Linux kernel */ #define LINUX_REBOOT_CMD_RESTART 0x01234567 #define LINUX_REBOOT_CMD_HALT 0xCDEF0123 #define LINUX_REBOOT_CMD_CAD_ON 0x89ABCDEF #define LINUX_REBOOT_CMD_CAD_OFF 0x00000000 #define LINUX_REBOOT_CMD_POWER_OFF 0x4321FEDC #define LINUX_REBOOT_CMD_RESTART2 0xA1B2C3D4 #define LINUX_REBOOT_CMD_SW_SUSPEND 0xD000FCE2 #define LINUX_REBOOT_CMD_KEXEC 0x45584543 #ifdef __KERNEL__ #include <linux/notifier.h> #define SYS_DOWN 0x0001 /* Notify of system down */ #define SYS_RESTART SYS_DOWN #define SYS_HALT 0x0002 /* Notify of system halt */ #define SYS_POWER_OFF 0x0003 /* Notify of system power off */ extern int register_reboot_notifier(struct notifier_block *); extern int unregister_reboot_notifier(struct notifier_block *); /* * Architecture-specific implementations of sys_reboot commands. */ extern void machine_restart(char *cmd); extern void machine_halt(void); extern void machine_power_off(void); extern void machine_shutdown(void); struct pt_regs; extern void machine_crash_shutdown(struct pt_regs *); /* * Architecture independent implemenations of sys_reboot commands. */ extern void kernel_restart_prepare(char *cmd); extern void kernel_restart(char *cmd); extern void kernel_halt(void); extern void kernel_power_off(void); extern int C_A_D; /* for sysctl */ void ctrl_alt_del(void); #define POWEROFF_CMD_PATH_LEN 256 extern char poweroff_cmd[POWEROFF_CMD_PATH_LEN]; extern int orderly_poweroff(bool force); /* * Emergency restart, callable from an interrupt handler. */ extern void emergency_restart(void); #include <asm/emergency-restart.h> #endif #endif /* _LINUX_REBOOT_H */