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diff --git a/Core/MdePkg/Library/PeiMemoryLib/MemLib.c b/Core/MdePkg/Library/PeiMemoryLib/MemLib.c
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+/** @file
+ Base Memory Library functions implementation bases on PeiServcie.
+
+ Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+ 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.
+
+**/
+
+#include "MemLibInternals.h"
+
+/**
+ Copies a source buffer to a destination buffer, and returns the destination buffer.
+
+ This function wraps the gPS->CopyMem ().
+
+ @param DestinationBuffer The pointer to the destination buffer of the memory copy.
+ @param SourceBuffer The pointer to the source buffer of the memory copy.
+ @param Length The number of bytes to copy from SourceBuffer to DestinationBuffer.
+
+ @return DestinationBuffer.
+
+**/
+VOID *
+EFIAPI
+InternalMemCopyMem (
+ OUT VOID *Destination,
+ IN CONST VOID *Source,
+ IN UINTN Length
+ )
+{
+ (*GetPeiServicesTablePointer ())->CopyMem (
+ Destination,
+ (VOID*)Source,
+ Length
+ );
+ return Destination;
+}
+
+/**
+ Fills a target buffer with a byte value, and returns the target buffer.
+
+ This function wraps the gPS->SetMem ().
+
+ @param Buffer Memory to set.
+ @param Size The number of bytes to set.
+ @param Value Value of the set operation.
+
+ @return Buffer.
+
+**/
+VOID *
+EFIAPI
+InternalMemSetMem (
+ OUT VOID *Buffer,
+ IN UINTN Size,
+ IN UINT8 Value
+ )
+{
+ (*GetPeiServicesTablePointer ())->SetMem (
+ Buffer,
+ Size,
+ Value
+ );
+ return Buffer;
+}