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diff --git a/ReferenceCode/ME/SampleCode/Include/Guid/TrEEPhysicalPresenceData/TrEEPhysicalPresenceData.h b/ReferenceCode/ME/SampleCode/Include/Guid/TrEEPhysicalPresenceData/TrEEPhysicalPresenceData.h
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index 0000000..215e8f9
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+++ b/ReferenceCode/ME/SampleCode/Include/Guid/TrEEPhysicalPresenceData/TrEEPhysicalPresenceData.h
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+/** @file
+  Define the variable data structures used for TrEE physical presence.
+  The TPM2 request from firmware or OS is saved to variable. And it is
+  cleared after it is processed in the next boot cycle. The TPM2 response
+  is saved to variable.
+
+@copyright
+  Copyright (c) 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 a 'Sample Driver' and is licensed as such
+  under the terms of your license agreement with Intel or your
+  vendor.  This file may be modified by the user, subject to
+  the additional terms of the license agreement
+**/
+
+#ifndef __TREE_PHYSICAL_PRESENCE_DATA_GUID_H__
+#define __TREE_PHYSICAL_PRESENCE_DATA_GUID_H__
+
+#define EFI_TREE_PHYSICAL_PRESENCE_DATA_GUID \
+  { \
+    0xf24643c2, 0xc622, 0x494e, { 0x8a, 0xd, 0x46, 0x32, 0x57, 0x9c, 0x2d, 0x5b }\
+  }
+
+#define TREE_PHYSICAL_PRESENCE_VARIABLE  L"TrEEPhysicalPresence"
+
+typedef struct {
+  UINT8   PPRequest;      ///< Physical Presence request command.
+  UINT8   LastPPRequest;
+  UINT32  PPResponse;
+  UINT8   Flags;
+} EFI_TREE_PHYSICAL_PRESENCE;
+
+//
+// The definition bit of the flags
+//
+#define TREE_FLAG_NO_PPI_CLEAR                        0x2
+#define TREE_FLAG_RESET_TRACK                         0x8
+
+//
+// The definition of physical presence operation actions
+//
+#define TREE_PHYSICAL_PRESENCE_NO_ACTION                               0
+#define TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR                     5
+#define TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_2                   14
+#define TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_FALSE                  17
+#define TREE_PHYSICAL_PRESENCE_SET_NO_PPI_CLEAR_TRUE                   18
+#define TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_3                   21
+#define TREE_PHYSICAL_PRESENCE_CLEAR_CONTROL_CLEAR_4                   22
+
+#define TREE_PHYSICAL_PRESENCE_NO_ACTION_MAX                           20
+
+extern EFI_GUID  gEfiTrEEPhysicalPresenceGuid;
+
+#endif
+