diff --git a/sys/sys/efi.h b/sys/sys/efi.h
--- a/sys/sys/efi.h
+++ b/sys/sys/efi.h
@@ -45,6 +45,23 @@
 #define LINUX_EFI_MEMRESERVE_TABLE			\
 	{0x888eb0c6,0x8ede,0x4ff5,0xa8,0xf0,{0x9a,0xee,0x5c,0xb9,0x77,0xc2}}
 
+#if BYTE_ORDER == LITTLE_ENDIAN
+#define	EFI_GUID(a, b, c, d, e0, e1, e2, e3, e4, e5)			\
+	((efi_guid_t) {(a), (b), (c), (d) >> 8, (d) & 0xff,		\
+	{ (e0), (e1), (e2), (e3), (e4), (e5) }})
+#else
+#define	EFI_GUID(a, b, c, d, e0, e1, e2, e3, e4, e5)			\
+	((efi_guid_t) {(a), (b), (c), (d) & 0xff, (d) >> 8,		\
+	{ (e0), (e1), (e2), (e3), (e4), (e5) }})
+#endif
+
+#define	EFI_GLOBAL_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa0d,	\
+	0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
+
+#define	EFI_VARIABLE_NON_VOLATILE	0x00000001
+#define	EFI_VARIABLE_BOOTSERVICE_ACCESS	0x00000002
+#define	EFI_VARIABLE_RUNTIME_ACCESS	0x00000004
+
 enum efi_reset {
 	EFI_RESET_COLD = 0,
 	EFI_RESET_WARM = 1,
@@ -154,6 +171,11 @@
 	uint64_t	memory_protection_attribute;
 };
 
+#ifndef _EFIVAR_EFI_GUID_T_DEF
+#define	_EFIVAR_EFI_GUID_T_DEF
+typedef struct uuid efi_guid_t;
+#endif
+
 #ifdef _KERNEL
 
 #ifdef EFIABI_ATTR