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diff --git a/DuetPkg/EfiLdr/LzmaDecompress.h b/DuetPkg/EfiLdr/LzmaDecompress.h
new file mode 100644
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+++ b/DuetPkg/EfiLdr/LzmaDecompress.h
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+/** @file
+  LZMA Decompress Library header file
+
+  Copyright (c) 2006 - 2009, Intel Corporation<BR>
+  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 __LZMADECOMPRESS_H__
+#define __LZMADECOMPRESS_H__
+
+/**
+  The internal implementation of *_DECOMPRESS_PROTOCOL.GetInfo().
+  
+  @param Source           The source buffer containing the compressed data.
+  @param SourceSize       The size of source buffer
+  @param DestinationSize  The size of destination buffer.
+  @param ScratchSize      The size of scratch buffer.
+
+  @retval RETURN_SUCCESS           - The size of destination buffer and the size of scratch buffer are successull retrieved.
+  @retval RETURN_INVALID_PARAMETER - The source data is corrupted
+**/
+RETURN_STATUS
+EFIAPI
+LzmaUefiDecompressGetInfo (
+  IN  CONST VOID  *Source,
+  IN  UINT32      SourceSize,
+  OUT UINT32      *DestinationSize,
+  OUT UINT32      *ScratchSize
+  );
+
+/**
+  The internal implementation of *_DECOMPRESS_PROTOCOL.Decompress().
+  
+  @param Source          - The source buffer containing the compressed data.
+  @param Destination     - The destination buffer to store the decompressed data
+  @param Scratch         - The buffer used internally by the decompress routine. This  buffer is needed to store intermediate data.
+
+  @retval RETURN_SUCCESS           - Decompression is successfull
+  @retval RETURN_INVALID_PARAMETER - The source data is corrupted  
+**/
+RETURN_STATUS
+EFIAPI
+LzmaUefiDecompress (
+  IN CONST VOID  *Source,
+  IN OUT VOID    *Destination,
+  IN OUT VOID    *Scratch
+  );
+
+#endif // __LZMADECOMPRESS_H__
+