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diff --git a/ReferenceCode/Chipset/SystemAgent/SampleCode/Ppi/PlatformMemorySize/PlatformMemorySize.h b/ReferenceCode/Chipset/SystemAgent/SampleCode/Ppi/PlatformMemorySize/PlatformMemorySize.h
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+++ b/ReferenceCode/Chipset/SystemAgent/SampleCode/Ppi/PlatformMemorySize/PlatformMemorySize.h
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+/** @file
+  Platform Memory Size PPI as defined in Tiano
+  PPI for describing the minimum platform memory size in order to successfully
+  pass control into DXE
+
+@copyright
+  Copyright (c) 1999 - 2012 Intel Corporation. All rights reserved
+  This software and associated documentation (if any) is furnished
+  under a license and may only be used or copied in accordance
+  with the terms of the license. Except as permitted by such
+  license, no part of this software or documentation may be
+  reproduced, stored in a retrieval system, or transmitted in any
+  form or by any means without the express written consent of
+  Intel Corporation.
+
+  This file contains 'Framework Code' and is licensed as such
+  under the terms of your license agreement with Intel or your
+  vendor.  This file may not be modified, except as allowed by
+  additional terms of your license agreement.
+**/
+#ifndef _PEI_PLATFORM_MEMORY_SIZE_H_
+#define _PEI_PLATFORM_MEMORY_SIZE_H_
+
+#define PEI_PLATFORM_MEMORY_SIZE_PPI_GUID \
+  { \
+    0x9a7ef41e, 0xc140, 0x4bd1, 0xb8, 0x84, 0x1e, 0x11, 0x24, 0xb, 0x4c, 0xe6 \
+  }
+
+EFI_FORWARD_DECLARATION (PEI_PLATFORM_MEMORY_SIZE_PPI);
+
+typedef
+EFI_STATUS
+(EFIAPI *PEI_GET_MINIMUM_PLATFORM_MEMORY_SIZE) (
+  IN      EFI_PEI_SERVICES                       **PeiServices,
+  IN PEI_PLATFORM_MEMORY_SIZE_PPI                * This,
+  IN OUT  UINT64                                 *MemorySize
+  );
+
+struct _PEI_PLATFORM_MEMORY_SIZE_PPI {
+  PEI_GET_MINIMUM_PLATFORM_MEMORY_SIZE  GetPlatformMemorySize;
+};
+
+extern EFI_GUID gPeiPlatformMemorySizePpiGuid;
+
+#endif