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diff --git a/MdePkg/Include/Ppi/Decompress.h b/MdePkg/Include/Ppi/Decompress.h
new file mode 100644
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+++ b/MdePkg/Include/Ppi/Decompress.h
@@ -0,0 +1,80 @@
+/* @file
+  Provides decompression services to the PEI Foundatoin.
+
+  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.             
+
+  Module Name:  Decompress.h
+
+  @par Revision Reference:
+  This PPI is defined in PI Version 1.00.
+
+**/
+
+#ifndef __DECOMPRESS_PPI_H__
+#define __DECOMPRESS_PPI_H__
+
+#define EFI_PEI_DECOMPRESS_PPI_GUID \
+	{ 0x1a36e4e7, 0xfab6, 0x476a, { 0x8e, 0x75, 0x69, 0x5a, 0x5, 0x76, 0xfd, 0xd7 } }
+
+typedef struct _EFI_PEI_DECOMPRESS_PPI 	EFI_PEI_DECOMPRESS_PPI;;
+
+/**                                                              
+  Decompresses the data in a compressed section and returns it
+  as a series of standard PI Firmware File Sections. The
+  required memory is allocated from permanent memory.
+
+  @param This 				Points to this instance of the
+											EFI_PEI_DECOMPRESS_PEI PPI. InputSection Points to
+											the compressed section.
+
+  @param OutputBuffer Holds the returned pointer to the
+                      decompressed sections.
+
+  @param OutputSize 	Holds the returned size of the decompress
+                      section streams.
+
+  @retval EFI_SUCCESS 					The section was decompressed
+																successfully. OutputBuffer contains the
+																resulting data and OutputSize contains
+																the resulting size.
+
+  @retval EFI_OUT_OF_RESOURCES 	Unable to allocate sufficient
+                                memory to hold the decompressed data.
+
+  @retval	EFI_UNSUPPORTED 			The compression type specified
+																in the compression header is unsupported.
+**/
+typedef
+EFI_STATUS
+(EFIAPI *EFI_PEI_DECOMPRESS_DECOMPRESS)(
+	IN CONST 	EFI_PEI_DECOMPRESS_PPI 	*This,
+	IN CONST 	EFI_COMPRESSION_SECTION *InputSection,
+	OUT 			VOID 										**OutputBuffer,
+	OUT 			UINTN 									*OutputSize
+);
+
+
+/**                                                              
+  This PPI’s single member function decompresses a compression
+	encapsulated section. It is used by the PEI Foundation to
+	process sectioned files. Prior to the installation of this PPI,
+  compression sections will be ignored.
+
+  @param	Decompress 	Decompress a single compression section in
+                     a firmware file.
+**/
+struct _EFI_PEI_DECOMPRESS_PPI {
+	EFI_PEI_DECOMPRESS_DECOMPRESS Decompress;
+};
+
+
+extern EFI_GUID		gEfiPeiDecompressPpiGuid;
+
+#endif