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diff --git a/MdePkg/Include/Uefi.h b/MdePkg/Include/Uefi.h
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+++ b/MdePkg/Include/Uefi.h
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+/** @file
+
+  Root include file for Mde Package UEFI modules.
+
+  UEFI modules follow the public EFI 1.10 or UEFI 2.0 specifications and
+  also contains the infrastructure required to build modules. The build 
+  infrastructure must set EFI_SPECIFICATION_VERSION  before including  this 
+  file. To support R9/UEFI2.0 set EFI_SPECIFIATION_VERSION to 0x00020000. To 
+  support R8.5/EFI 1.10 set EFI_SPECIFIATION_VERSION to 0x00010010. 
+  Seting EDK_RELEASE_VERSION to zero implies no Tiano extensions and a
+  non zero value implies Tiano extensions are availible. 
+  EFI_SPECIFIATION_VERSION and EDK_RELEASE_VERSION are set automatically
+  by the build infrastructure for every module.
+  
+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.
+
+**/
+
+
+#ifndef __UEFI_H__
+#define __UEFI_H__
+
+
+//
+// Check to make sure EFI_SPECIFICATION_VERSION and EDK_RELEASE_VERSION are defined.
+//  also check for legal combinations
+//
+#if !defined(EFI_SPECIFICATION_VERSION)
+  #error EFI_SPECIFICATION_VERSION not defined
+#elif !defined(EDK_RELEASE_VERSION)
+  #error EDK_RELEASE_VERSION not defined
+#elif EDK_RELEASE_VERSION == 0x00000000
+//
+// UEFI mode with no Tiano extensions is legal
+//
+#elif (EDK_RELEASE_VERSION <= 0x00080005) && (EFI_SPECIFICATION_VERSION >= 0x00020000)
+  #error Illegal combination of EFI_SPECIFICATION_VERSION and EDK_RELEASE_VERSION versions
+#endif
+
+
+
+#include <Common/UefiBaseTypes.h>
+#include <Uefi/UefiSpec.h>
+
+//
+// Need due to R8.5 Tiano contamination of UEFI enumes. 
+// There is a UEFI library that does things the new way and the old way
+// This is why these definitions are need in Uefi.h
+//
+#include <Guid/EventLegacyBios.h>
+#include <Guid/FrameworkDevicePath.h>
+
+
+//
+// All module types types have access to PCD for build support
+//
+#include <Protocol/Pcd.h>
+
+#endif