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diff --git a/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PalLib.h b/src/vendorcode/intel/edk2/UDK2017/MdePkg/Include/Library/PalLib.h
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+/** @file
+  Provides library services to make PAL Calls.
+  
+  The PAL Library provides a service to make a PAL CALL.  This service is identical
+  in functionality to AsmPalCall() in the functions of the Base Library specific to Intel Itanium architecture.
+  The only difference is that the PAL Entry Point is not passed in.  Implementations
+  of this library class must manage PAL Entry Point on their own.  For example, a PEI
+  implementation can use a PPI to lookup the PAL Entry Point, and a DXE implementation
+  can contain a constructor to look up the PAL Entry Point from a HOB.  This library class 
+  is only available on Intel Itanium-based platforms.
+  
+Copyright (c) 2006 - 2008, 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.             
+
+**/
+
+#ifndef __PAL_CALL_LIB_H__
+#define __PAL_CALL_LIB_H__
+
+#include <IndustryStandard/Pal.h>
+
+/**
+  Makes a PAL procedure call.
+
+  This is a wrapper function to make a PAL procedure call.  Based on the Index value,
+  this API will make static or stacked PAL call. Architected procedures may be designated
+  as required or optional.  If a PAL procedure is specified as optional, a unique return
+  code of 0xFFFFFFFFFFFFFFFF is returned in the Status field of the PAL_CALL_RETURN structure.
+  This indicates that the procedure is not present in this PAL implementation.  It is the
+  caller's responsibility to check for this return code after calling any optional PAL
+  procedure. No parameter checking is performed on the 4 input parameters, but there are
+  some common rules that the caller should follow when making a PAL call.  Any address
+  passed to PAL as buffers for return parameters must be 8-byte aligned.  Unaligned addresses
+  may cause undefined results.  For those parameters defined as reserved or some fields
+  defined as reserved must be zero filled or the invalid argument return value may be
+  returned or undefined result may occur during the execution of the procedure.
+  This function is only available on Intel Itanium-based platforms.
+
+  @param Index  The PAL procedure Index number.
+  @param Arg2   The 2nd parameter for PAL procedure calls.
+  @param Arg3   The 3rd parameter for PAL procedure calls.
+  @param Arg4   The 4th parameter for PAL procedure calls.
+
+  @return Structure returned from the PAL Call procedure, including the status and return value.
+
+**/
+PAL_CALL_RETURN
+EFIAPI
+PalCall (
+  IN UINT64                  Index,
+  IN UINT64                  Arg2,
+  IN UINT64                  Arg3,
+  IN UINT64                  Arg4
+  );
+
+#endif
+