/** @file
  SMM Library instance of SPI Flash Common Library Class

 @copyright
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  Intel's suppliers or licensors in any way.

  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.

@par Specification Reference:

**/

#include <Library/SpiFlashCommon.h>
#include <Library/SmmServicesTableLib.h>
#ifndef MINTREE_FLAG
#include <Protocol/BiosGuard.h>
#endif

extern PCH_SPI_PROTOCOL   *mSpiProtocol;
#ifndef MINTREE_FLAG
extern BIOSGUARD_PROTOCOL *mBiosGuardProtocol;
#endif

extern UINTN mFlashAreaBaseAddress;
extern UINTN mFlashAreaSize;

/**
  The library constructuor.

  The function does the necessary initialization work for this library
  instance.

  @param[in]  ImageHandle       The firmware allocated handle for the UEFI image.
  @param[in]  SystemTable       A pointer to the EFI system table.

  @retval     EFI_SUCCESS       The function always return EFI_SUCCESS for now.
                                It will ASSERT on error for debug version.
  @retval     EFI_ERROR         Please reference LocateProtocol for error code details.
**/
EFI_STATUS
EFIAPI
SmmSpiFlashCommonLibConstructor (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS Status;

  mFlashAreaBaseAddress = (UINTN)PcdGet32 (PcdFlashAreaBaseAddress);
  mFlashAreaSize        = (UINTN)PcdGet32 (PcdFlashAreaSize);
#ifndef MINTREE_FLAG
  mBiosGuardProtocol    = NULL;

  if (PcdGetBool (PcdBiosGuardEnable)) {
    //
    // Locate the BiosGuard protocol.
    //
    Status = gSmst->SmmLocateProtocol (
                      &gSmmBiosGuardProtocolGuid,
                      NULL,
                      (VOID **)&mBiosGuardProtocol
                      );
  }
#endif

  //
  // Locate the SMM SPI protocol.
  //
  Status = gSmst->SmmLocateProtocol (
                    &gPchSmmSpiProtocolGuid,
                    NULL,
                    (VOID **) &mSpiProtocol
                    );
  ASSERT_EFI_ERROR (Status);

  return Status;
}
