2 files changed, 25 insertions, 1 deletions
diff --git a/MdePkg/Include/Common/StatusCode.h b/MdePkg/Include/Common/StatusCode.h
index 474ed106f8..03b0cfcc3d 100644
--- a/MdePkg/Include/Common/StatusCode.h
+++ b/MdePkg/Include/Common/StatusCode.h
@@ -595,7 +595,7 @@ typedef struct {
 //
 #define EFI_SW_PEIM_PC_RECOVERY_BEGIN (EFI_SUBCLASS_SPECIFIC | 0x00000000)
 #define EFI_SW_PEIM_PC_CAPSULE_LOAD   (EFI_SUBCLASS_SPECIFIC | 0x00000001)
-#define EFI_SW_PEIM_PC_CAPSULE_START  (EFI_SUBCLASS_SPECIFIC | 0x00000001)
+#define EFI_SW_PEIM_PC_CAPSULE_START  (EFI_SUBCLASS_SPECIFIC | 0x00000002)
 #define EFI_SW_PEIM_PC_RECOVERY_USER  (EFI_SUBCLASS_SPECIFIC | 0x00000003)
 #define EFI_SW_PEIM_PC_RECOVERY_AUTO  (EFI_SUBCLASS_SPECIFIC | 0x00000004)
 
diff --git a/MdePkg/Library/PeiHobLib/HobLib.c b/MdePkg/Library/PeiHobLib/HobLib.c
index ce9f79f82c..60a0e8c5da 100644
--- a/MdePkg/Library/PeiHobLib/HobLib.c
+++ b/MdePkg/Library/PeiHobLib/HobLib.c
@@ -228,6 +228,11 @@ BuildModuleHob (
   Hob->MemoryAllocationHeader.MemoryLength      = ModuleLength;
   Hob->MemoryAllocationHeader.MemoryType        = EfiBootServicesCode;
 
+  //
+  // Zero the reserved space to match HOB spec
+  //
+  ZeroMem (Hob->MemoryAllocationHeader.Reserved, sizeof (Hob->MemoryAllocationHeader.Reserved));
+  
   CopyGuid (&Hob->ModuleName, ModuleName);
   Hob->EntryPoint = EntryPoint;
 }
@@ -418,6 +423,11 @@ BuildCpuHob (
 
   Hob->SizeOfMemorySpace = SizeOfMemorySpace;
   Hob->SizeOfIoSpace     = SizeOfIoSpace;
+
+  //
+  // Zero the reserved space to match HOB spec
+  //
+  ZeroMem (Hob->Reserved, sizeof (Hob->Reserved)); 
 }
 
 /**
@@ -447,6 +457,11 @@ BuildStackHob (
   Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
   Hob->AllocDescriptor.MemoryLength      = Length;
   Hob->AllocDescriptor.MemoryType        = EfiConventionalMemory;
+
+  //
+  // Zero the reserved space to match HOB spec
+  //
+  ZeroMem (Hob->AllocDescriptor.Reserved, sizeof (Hob->AllocDescriptor.Reserved));
 }
 
 /**
@@ -478,6 +493,11 @@ BuildBspStoreHob (
   Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
   Hob->AllocDescriptor.MemoryLength      = Length;
   Hob->AllocDescriptor.MemoryType        = MemoryType;
+
+  //
+  // Zero the reserved space to match HOB spec
+  //
+  ZeroMem (Hob->AllocDescriptor.Reserved, sizeof (Hob->AllocDescriptor.Reserved));
 }
 
 /**
@@ -509,4 +529,8 @@ BuildMemoryAllocationHob (
   Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
   Hob->AllocDescriptor.MemoryLength      = Length;
   Hob->AllocDescriptor.MemoryType        = MemoryType;
+  //
+  // Zero the reserved space to match HOB spec
+  //
+  ZeroMem (Hob->AllocDescriptor.Reserved, sizeof (Hob->AllocDescriptor.Reserved));
 }