2 files changed, 14 insertions, 1 deletions
diff --git a/MdePkg/Include/Pi/PiDxeCis.h b/MdePkg/Include/Pi/PiDxeCis.h
index bb5e6a2389..a2208dffc2 100644
--- a/MdePkg/Include/Pi/PiDxeCis.h
+++ b/MdePkg/Include/Pi/PiDxeCis.h
@@ -53,6 +53,11 @@ typedef enum {
   /// This memory supports byte-addressable non-volatility. 
   ///
   EfiGcdMemoryTypePersistentMemory,
+  ///
+  /// A memory region that provides higher reliability relative to other memory in the
+  /// system. If all memory has the same reliability, then this bit is not used.
+  ///
+  EfiGcdMemoryTypeMoreReliable,
   EfiGcdMemoryTypeMaximum
 } EFI_GCD_MEMORY_TYPE;
 
diff --git a/MdePkg/Include/Pi/PiHob.h b/MdePkg/Include/Pi/PiHob.h
index b24f95149b..8581d7c747 100644
--- a/MdePkg/Include/Pi/PiHob.h
+++ b/MdePkg/Include/Pi/PiHob.h
@@ -11,7 +11,7 @@ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 
   @par Revision Reference:
-  PI Version 1.0
+  PI Version 1.4
 
 **/
 
@@ -295,6 +295,14 @@ typedef UINT32 EFI_RESOURCE_ATTRIBUTE_TYPE;
 #define EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTED      0x00040000
 #define EFI_RESOURCE_ATTRIBUTE_READ_ONLY_PROTECTABLE    0x00800000
 
+//
+// Physical memory relative reliability attribute. This
+// memory provides higher reliability relative to other
+// memory in the system. If all memory has the same
+// reliability, then this bit is not used.
+//
+#define EFI_RESOURCE_ATTRIBUTE_MORE_RELIABLE            0x02000000
+
 ///
 /// Describes the resource properties of all fixed,
 /// nonrelocatable resource ranges found on the processor