1LINUX_REBOOT_CMD_RESTART 0x01234567
2LINUX_REBOOT_CMD_HALT 0xCDEF0123
3LINUX_REBOOT_CMD_CAD_ON 0x89ABCDEF
4LINUX_REBOOT_CMD_CAD_OFF 0x00000000
5LINUX_REBOOT_CMD_POWER_OFF 0x4321FEDC
6LINUX_REBOOT_CMD_RESTART2 0xA1B2C3D4
7LINUX_REBOOT_CMD_SW_SUSPEND 0xD000FCE2
8LINUX_REBOOT_CMD_KEXEC 0x45584543
9