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diff --git a/MdePkg/Include/Pi/PiStatusCode.h b/MdePkg/Include/Pi/PiStatusCode.h
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+++ b/MdePkg/Include/Pi/PiStatusCode.h
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+/** @file
+  StatusCode related definitions in PI.
+
+  Copyright (c) 2009, 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.             
+
+  @par Revision Reference:
+  PI Version 1.0
+
+**/
+
+#ifndef __PI_STATUS_CODE_H__
+#define __PI_STATUS_CODE_H__
+
+///
+/// Status Code Type Definition
+///
+typedef UINT32  EFI_STATUS_CODE_TYPE;
+
+//
+// A Status Code Type is made up of the code type and severity
+// All values masked by EFI_STATUS_CODE_RESERVED_MASK are
+// reserved for use by this specification.
+//
+#define EFI_STATUS_CODE_TYPE_MASK     0x000000FF
+#define EFI_STATUS_CODE_SEVERITY_MASK 0xFF000000
+#define EFI_STATUS_CODE_RESERVED_MASK 0x00FFFF00
+
+//
+// Definition of code types, all other values masked by
+// EFI_STATUS_CODE_TYPE_MASK are reserved for use by
+// this specification.
+//
+#define EFI_PROGRESS_CODE             0x00000001
+#define EFI_ERROR_CODE                0x00000002
+#define EFI_DEBUG_CODE                0x00000003
+
+//
+// Definitions of severities, all other values masked by
+// EFI_STATUS_CODE_SEVERITY_MASK are reserved for use by
+// this specification.
+// Uncontained errors are major errors that could not contained
+// to the specific component that is reporting the error
+// For example, if a memory error was not detected early enough,
+// the bad data could be consumed by other drivers.
+//
+#define EFI_ERROR_MINOR               0x40000000
+#define EFI_ERROR_MAJOR               0x80000000
+#define EFI_ERROR_UNRECOVERED         0x90000000
+#define EFI_ERROR_UNCONTAINED         0xa0000000
+
+///
+/// Status Code Value Definition
+///
+typedef UINT32 EFI_STATUS_CODE_VALUE;
+
+//
+// A Status Code Value is made up of the class, subclass, and
+// an operation.
+//
+#define EFI_STATUS_CODE_CLASS_MASK      0xFF000000
+#define EFI_STATUS_CODE_SUBCLASS_MASK   0x00FF0000
+#define EFI_STATUS_CODE_OPERATION_MASK  0x0000FFFF
+
+///
+/// Definition of Status Code extended data header.
+/// The data will follow HeaderSize bytes from the beginning of
+/// the structure and is Size bytes long.
+///
+typedef struct {
+  ///
+  /// The size of the structure. This is specified to enable future expansion.
+  ///
+  UINT16    HeaderSize;
+  ///
+  /// The size of the data in bytes. This does not include the size of the header structure.
+  ///
+  UINT16    Size;
+  ///
+  /// The GUID defining the type of the data.
+  ///
+  EFI_GUID  Type;
+} EFI_STATUS_CODE_DATA;
+
+
+///
+/// Bit values for Authentication Status
+///
+/// xx00 Image was not signed.
+/// xxx1 Platform security policy override. Assumes same meaning as 0010 (the image was signed, the
+///      signature was tested, and the signature passed authentication test).
+/// 0010 Image was signed, the signature was tested, and the signature passed authentication test.
+/// 0110 Image was signed and the signature was not tested.
+/// 1010 Image was signed, the signature was tested, and the signature failed the authentication test.
+///
+#define EFI_AUTH_STATUS_PLATFORM_OVERRIDE   0x01
+#define EFI_AUTH_STATUS_IMAGE_SIGNED        0x02
+#define EFI_AUTH_STATUS_NOT_TESTED          0x04
+#define EFI_AUTH_STATUS_TEST_FAILED         0x08
+#define EFI_AUTH_STATUS_ALL                 0x0f
+
+#endif