+#define EFI_HANDLE_TYPE_UNKNOWN 0x000
+#define EFI_HANDLE_TYPE_IMAGE_HANDLE 0x001
+#define EFI_HANDLE_TYPE_DRIVER_BINDING_HANDLE 0x002
+#define EFI_HANDLE_TYPE_DEVICE_DRIVER 0x004
+#define EFI_HANDLE_TYPE_BUS_DRIVER 0x008
+#define EFI_HANDLE_TYPE_DRIVER_CONFIGURATION_HANDLE 0x010
+#define EFI_HANDLE_TYPE_DRIVER_DIAGNOSTICS_HANDLE 0x020
+#define EFI_HANDLE_TYPE_COMPONENT_NAME_HANDLE 0x040
+#define EFI_HANDLE_TYPE_DEVICE_HANDLE 0x080
+#define EFI_HANDLE_TYPE_PARENT_HANDLE 0x100
+#define EFI_HANDLE_TYPE_CONTROLLER_HANDLE 0x200
+#define EFI_HANDLE_TYPE_CHILD_HANDLE 0x400