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diff --git a/MdePkg/Include/Protocol/PciOverride.h b/MdePkg/Include/Protocol/PciOverride.h
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+/** @file
+  This file declares EFI PCI Override protocol which provides the interface between
+  the PCI bus driver/PCI Host Bridge Resource Allocation driver and an implementation's
+  driver to describe the unique features of a platform.
+  This protocol is optional.
+
+  Copyright (c) 2009, 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.
+
+  @par Revision Reference:
+  This Protocol is defined in UEFI Platform Initialization Specification 1.2
+  Volume 5: Standards
+
+**/
+
+#ifndef _PCI_OVERRIDE_H_
+#define _PCI_OVERRIDE_H_
+
+///
+/// EFI_PCI_OVERRIDE_PROTOCOL has the same structure with EFI_PCI_PLATFORM_PROTOCOL
+///
+#include <Protocol/PciPlatform.h>
+
+///
+/// Global ID for the EFI_PCI_OVERRIDE_PROTOCOL
+///
+#define EFI_PCI_OVERRIDE_GUID \
+  { \
+    0xb5b35764, 0x460c, 0x4a06, {0x99, 0xfc, 0x77, 0xa1, 0x7c, 0x1b, 0x5c, 0xeb} \
+  }
+
+///
+/// Declaration for EFI_PCI_OVERRIDE_PROTOCOL
+///
+typedef EFI_PCI_PLATFORM_PROTOCOL EFI_PCI_OVERRIDE_PROTOCOL;
+
+
+extern EFI_GUID   gEfiPciOverrideProtocolGuid;
+
+#endif