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diff --git a/IntelFsp2Pkg/FspSecCore/SecMain.h b/IntelFsp2Pkg/FspSecCore/SecMain.h
new file mode 100644
index 0000000000..33f73625ca
--- /dev/null
+++ b/IntelFsp2Pkg/FspSecCore/SecMain.h
@@ -0,0 +1,140 @@
+/** @file
+
+  Copyright (c) 2014 - 2016, Intel Corporation. All rights reserved.<BR>
+  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.
+
+**/
+
+#ifndef _SEC_CORE_H_
+#define _SEC_CORE_H_
+
+
+#include <PiPei.h>
+#include <Ppi/TemporaryRamSupport.h>
+
+#include <Library/BaseLib.h>
+#include <Library/IoLib.h>
+#include <Library/DebugLib.h>
+#include <Library/PcdLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/PciCf8Lib.h>
+#include <Library/SerialPortLib.h>
+#include <Library/FspSwitchStackLib.h>
+#include <Library/FspCommonLib.h>
+#include <FspEas.h>
+
+#define SEC_IDT_ENTRY_COUNT    34
+
+typedef VOID (*PEI_CORE_ENTRY) ( \
+  IN CONST  EFI_SEC_PEI_HAND_OFF    *SecCoreData, \
+  IN CONST  EFI_PEI_PPI_DESCRIPTOR  *PpiList \
+);
+
+typedef struct _SEC_IDT_TABLE {
+  EFI_PEI_SERVICES  *PeiService;
+  UINT64            IdtTable[SEC_IDT_ENTRY_COUNT];
+} SEC_IDT_TABLE;
+
+/**
+  Switch the stack in the temporary memory to the one in the permanent memory.
+
+  This function must be invoked after the memory migration immediately. The relative
+  position of the stack in the temporary and permanent memory is same.
+
+  @param[in] TemporaryMemoryBase  Base address of the temporary memory.
+  @param[in] PermenentMemoryBase  Base address of the permanent memory.
+**/
+VOID
+EFIAPI
+SecSwitchStack (
+  IN UINT32   TemporaryMemoryBase,
+  IN UINT32   PermenentMemoryBase
+  );
+
+/**
+  This service of the TEMPORARY_RAM_SUPPORT_PPI that migrates temporary RAM into
+  permanent memory.
+
+  @param[in] PeiServices            Pointer to the PEI Services Table.
+  @param[in] TemporaryMemoryBase    Source Address in temporary memory from which the SEC or PEIM will copy the
+                                Temporary RAM contents.
+  @param[in] PermanentMemoryBase    Destination Address in permanent memory into which the SEC or PEIM will copy the
+                                Temporary RAM contents.
+  @param[in] CopySize               Amount of memory to migrate from temporary to permanent memory.
+
+  @retval EFI_SUCCESS           The data was successfully returned.
+  @retval EFI_INVALID_PARAMETER PermanentMemoryBase + CopySize > TemporaryMemoryBase when
+                                TemporaryMemoryBase > PermanentMemoryBase.
+
+**/
+EFI_STATUS
+EFIAPI
+SecTemporaryRamSupport (
+  IN CONST EFI_PEI_SERVICES   **PeiServices,
+  IN EFI_PHYSICAL_ADDRESS     TemporaryMemoryBase,
+  IN EFI_PHYSICAL_ADDRESS     PermanentMemoryBase,
+  IN UINTN                    CopySize
+  );
+
+/**
+  Initializes floating point units for requirement of UEFI specification.
+
+  This function initializes floating-point control word to 0x027F (all exceptions
+  masked,double-precision, round-to-nearest) and multimedia-extensions control word
+  (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
+  for masked underflow).
+
+**/
+VOID
+EFIAPI
+InitializeFloatingPointUnits (
+  VOID
+  );
+
+/**
+
+  Entry point to the C language phase of SEC. After the SEC assembly
+  code has initialized some temporary memory and set up the stack,
+  the control is transferred to this function.
+
+
+  @param[in] SizeOfRam          Size of the temporary memory available for use.
+  @param[in] TempRamBase        Base address of tempory ram
+  @param[in] BootFirmwareVolume Base address of the Boot Firmware Volume.
+  @param[in] PeiCore            PeiCore entry point.
+  @param[in] BootLoaderStack    BootLoader stack.
+  @param[in] ApiIdx             the index of API.
+
+  @return This function never returns.
+
+**/
+VOID
+EFIAPI
+SecStartup (
+  IN UINT32                   SizeOfRam,
+  IN UINT32                   TempRamBase,
+  IN VOID                    *BootFirmwareVolume,
+  IN PEI_CORE_ENTRY           PeiCore,
+  IN UINT32                   BootLoaderStack,
+  IN UINT32                   ApiIdx
+  );
+
+/**
+  Autogenerated function that calls the library constructors for all of the module's
+  dependent libraries.  This function must be called by the SEC Core once a stack has
+  been established.
+
+**/
+VOID
+EFIAPI
+ProcessLibraryConstructorList (
+  VOID
+  );
+
+#endif