diff --git a/inc/efidef.h b/inc/efidef.h
index 3f3bedf..fdc743c 100644
--- a/inc/efidef.h
+++ b/inc/efidef.h
@@ -182,24 +182,36 @@ typedef enum {
     EfiMemoryMappedIO,
     EfiMemoryMappedIOPortSpace,
     EfiPalCode,
+    EfiPersistentMemory,
+    EfiUnacceptedMemoryType,
     EfiMaxMemoryType
 } EFI_MEMORY_TYPE;
 
-// possible caching types for the memory range
-#define EFI_MEMORY_UC           0x0000000000000001
-#define EFI_MEMORY_WC           0x0000000000000002
-#define EFI_MEMORY_WT           0x0000000000000004
-#define EFI_MEMORY_WB           0x0000000000000008
-#define EFI_MEMORY_UCE          0x0000000000000010
-#define EFI_MEMORY_WP           0x0000000000001000
 
-// physical memory protection on range
-#define EFI_MEMORY_RP           0x0000000000002000
-#define EFI_MEMORY_XP           0x0000000000004000
-#define EFI_MEMORY_RO           0x0000000000020000
+// Memory cacheability attribute
+#define EFI_MEMORY_UC            0x0000000000000001
+#define EFI_MEMORY_WC            0x0000000000000002
+#define EFI_MEMORY_WT            0x0000000000000004
+#define EFI_MEMORY_WB            0x0000000000000008
+#define EFI_MEMORY_UCE           0x0000000000000010
+
+// Physical memory protection attribute
+#define EFI_MEMORY_WP            0x0000000000001000
+#define EFI_MEMORY_RP            0x0000000000002000
+#define EFI_MEMORY_XP            0x0000000000004000
+#define EFI_MEMORY_RO            0x0000000000020000
+
+// Runtime memory attribute
+#define EFI_MEMORY_NV            0x0000000000008000
+#define EFI_MEMORY_RUNTIME       0x8000000000000000
+
+// Other memory attribute
+#define EFI_MEMORY_MORE_RELIABLE 0x0000000000010000
+#define EFI_MEMORY_SP            0x0000000000040000
+#define EFI_MEMORY_CPU_CRYPTO    0x0000000000080000
+#define EFI_MEMORY_ISA_VALID     0x4000000000000000
+#define EFI_MEMORY_ISA_MASK      0x0FFFF00000000000
 
-// range requires a runtime mapping
-#define EFI_MEMORY_RUNTIME      0x8000000000000000
 
 #define EFI_MEMORY_DESCRIPTOR_VERSION  1
 typedef struct {