1 files changed, 22 insertions, 9 deletions
diff --git a/MdePkg/Include/Pi/PiFirmwareVolume.h b/MdePkg/Include/Pi/PiFirmwareVolume.h
index 6ef2f1fc33f3..ca13075b77d9 100644
--- a/MdePkg/Include/Pi/PiFirmwareVolume.h
+++ b/MdePkg/Include/Pi/PiFirmwareVolume.h
@@ -1,17 +1,11 @@
 /** @file
   The firmware volume related definitions in PI.
 
-  Copyright (c) 2006 - 2013, 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.
+  Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
 
   @par Revision Reference:
-  PI Version 1.3
+  PI Version 1.6
 
 **/
 
@@ -231,4 +225,23 @@ typedef struct {
   ///
 } EFI_FIRMWARE_VOLUME_EXT_ENTRY_GUID_TYPE;
 
+#define EFI_FV_EXT_TYPE_USED_SIZE_TYPE 0x03
+
+///
+/// The EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE can be used to find
+/// out how many EFI_FVB2_ERASE_POLARITY bytes are at the end of the FV.
+///
+typedef struct {
+  ///
+  /// Standard extension entry, with the type EFI_FV_EXT_TYPE_USED_SIZE_TYPE.
+  ///
+  EFI_FIRMWARE_VOLUME_EXT_ENTRY     Hdr;
+  ///
+  /// The number of bytes of the FV that are in uses. The remaining
+  /// EFI_FIRMWARE_VOLUME_HEADER FvLength minus UsedSize bytes in
+  /// the FV must contain the value implied by EFI_FVB2_ERASE_POLARITY.
+  ///
+  UINT32                            UsedSize;
+} EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE;
+
 #endif