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diff --git a/EdkModulePkg/Include/Guid/PeiPerformanceHob.h b/EdkModulePkg/Include/Guid/PeiPerformanceHob.h
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+++ b/EdkModulePkg/Include/Guid/PeiPerformanceHob.h
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+/*++
+
+Copyright (c) 2006, Intel Corporation                                                         
+All rights reserved. This program and the accompanying materials                          
+are licensed and made available under the terms and conditions of the BSD License         
+which accompanies this distribution.  The full text of the license may be found at        
+http://opensource.org/licenses/bsd-license.php                                            
+                                                                                          
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
+
+Module Name:
+
+  PeiPerformanceHob.h
+    
+Abstract:
+
+  GUIDs used for PEI Performance HOB data structures
+
+--*/
+
+#ifndef __PEI_PERFORMANCE_HOB_H__
+#define __PEI_PERFORMANCE_HOB_H__
+
+//
+// This is the GUID of PEI performance HOB
+//
+#define PEI_PERFORMANCE_HOB_GUID \
+  { 0xec4df5af, 0x4395, 0x4cc9, { 0x94, 0xde, 0x77, 0x50, 0x6d, 0x12, 0xc7, 0xb8 } }
+
+//
+// PEI_PERFORMANCE_STRING_SIZE must be a multiple of 8.
+//
+#define PEI_PERFORMANCE_STRING_SIZE     8
+#define PEI_PERFORMANCE_STRING_LENGTH   (PEI_PERFORMANCE_STRING_SIZE - 1)
+//
+// Bugbug: This macro will be replaced by a binary patchable PCD entry in EdkModulePkg
+//
+#define MAX_PEI_PERFORMANCE_LOG_ENTRIES 28
+
+typedef struct {
+  EFI_PHYSICAL_ADDRESS  Handle;
+  CHAR8                 Token[PEI_PERFORMANCE_STRING_SIZE];
+  CHAR8                 Module[PEI_PERFORMANCE_STRING_SIZE];
+  UINT64                StartTimeStamp;
+  UINT64                EndTimeStamp;
+} PEI_PERFORMANCE_LOG_ENTRY;
+
+//
+// The header must be aligned at 8 bytes.
+// 
+typedef struct {
+  UINT32                             NumberOfEntries;
+  UINT32                             Reserved;
+} PEI_PERFORMANCE_LOG_HEADER;
+
+
+extern EFI_GUID gPeiPerformanceHobGuid;
+
+#endif