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diff --git a/ReferenceCode/Chipset/LynxPoint/S3Support/Smm/S3SupportSmm.h b/ReferenceCode/Chipset/LynxPoint/S3Support/Smm/S3SupportSmm.h
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+/** @file
+ Header file for PCH SMM Handler
+
+@copyright
+ Copyright (c) 2015 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 an 'Intel Peripheral Driver' and uniquely
+ identified as "Intel Reference Module" and is
+ licensed for Intel CPUs and chipsets under the terms of your
+ license agreement with Intel or your vendor. This file may
+ be modified by the user, subject to additional terms of the
+ license agreement
+**/
+
+#ifndef _PCHLATEINITSMM_H_
+#define _PCHLATEINITSMM_H_
+
+///
+/// External include files do NOT need to be explicitly specified in real EDKII
+/// environment
+///
+#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000)
+#include "EdkIIGlueDxe.h"
+#include "PchAccess.h"
+#include "PchPlatformLib.h"
+
+///
+/// Driver Consumed Protocol Prototypes
+///
+#include EFI_PROTOCOL_DEPENDENCY (PchS3Support)
+#include EFI_PROTOCOL_DEPENDENCY (SmmBase)
+#include EFI_PROTOCOL_DEPENDENCY (SmmIoTrapDispatch)
+#include EFI_PROTOCOL_DEPENDENCY (SmmSxDispatch)
+#include EFI_PROTOCOL_CONSUMER (ExitPmAuth)
+
+
+#endif
+
+/**
+ An IO Trap SMI callback to copy the DispatchArray data to SMRAM and unregister the IO Trap.
+
+ @param[in] DispatchHandle - The handle of this callback, obtained when registering
+ @param[in] DispatchContext - Pointer to the EFI_SMM_IO_TRAP_DISPATCH_CALLBACK_CONTEXT
+
+ @retval None
+**/
+VOID
+S3SupportSmmExitPmAuthCallback (
+ EFI_EVENT Event,
+ VOID *ParentImageHandle
+);
+
+#endif