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diff --git a/ReferenceCode/Chipset/SystemAgent/SaInit/Dxe/VTd.h b/ReferenceCode/Chipset/SystemAgent/SaInit/Dxe/VTd.h
new file mode 100644
index 0000000..2d9daa4
--- /dev/null
+++ b/ReferenceCode/Chipset/SystemAgent/SaInit/Dxe/VTd.h
@@ -0,0 +1,70 @@
+/** @file
+  This code provides a initialization of intel VT-d (Virtualization Technology for Directed I/O).
+
+@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 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 _VT_D_H_
+#define _VT_D_H_
+
+///
+/// Include files
+///
+#include "DmaRemappingTable.h"
+#include "SaAccess.h"
+#include "PchAccess.h"
+
+#include EFI_PROTOCOL_DEPENDENCY (AcpiTable)
+#include EFI_PROTOCOL_DEFINITION (SaPlatformPolicy)
+#include EFI_PROTOCOL_DEFINITION (PchPlatformPolicy)
+
+///
+/// SA ACPI table data storage file
+///
+#include EFI_GUID_DEFINITION (SaAcpiTableStorage)
+
+#define VTD_ECAP_REG  0x10
+#define IR            BIT3
+
+#define VTD_GCMD_REG  0x18
+#define QIE           BIT26
+#define IRE           BIT25
+
+EFI_STATUS
+VtdInit (
+  IN  DXE_PLATFORM_SA_POLICY_PROTOCOL    *DxePlatformSaPolicy
+  )
+/**
+  Locate the VT-d ACPI tables data file and read ACPI SSDT tables.
+  Publish the appropriate SSDT based on current configuration and capabilities.
+
+  @param[in] DxePlatformSaPolicy            SA DxePlatformPolicy protocol
+
+  @retval EFI_SUCCESS - Vtd initialization complete
+  @retval Other       - No Vtd function initiated
+**/
+;
+
+VOID
+UpdateDmarExitPmAuth (
+  VOID
+  )
+/**
+  ExitPmAuth routine for update DMAR
+**/
+;
+#endif