MdePkg/Include/Protocol/DxeSmmReadyToLock.h

   1 /** @file
   2   DXE SMM Ready To Lock protocol introduced in the PI 1.2 specification.
   3
   4   According to PI 1.4a specification, this UEFI protocol indicates that
   5   resources and services that should not be used by the third party code
   6   are about to be locked.
   7   This protocol is a mandatory protocol published by PI platform code.
   8   This protocol in tandem with the End of DXE Event facilitates transition
   9   of the platform from the environment where all of the components are
  10   under the authority of the platform manufacturer to the environment where
  11   third party extensible modules such as UEFI drivers and UEFI applications
  12   are executed. The protocol is published immediately after signaling of the
  13   End of DXE Event. PI modules that need to lock or protect their resources
  14   in anticipation of the invocation of 3rd party extensible modules should
  15   register for notification on installation of this protocol and effect the
  16   appropriate protections in their notification handlers. For example, PI
  17   platform code may choose to use notification handler to lock SMM by invoking
  18   EFI_SMM_ACCESS2_PROTOCOL.Lock() function.
  19
  20   Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
  21   SPDX-License-Identifier: BSD-2-Clause-Patent
  22
  23 **/
  24
  25 #ifndef _DXE_SMM_READY_TO_LOCK_H_
  26 #define _DXE_SMM_READY_TO_LOCK_H_
  27
  28 #include <Protocol/DxeMmReadyToLock.h>
  29
  30 #define EFI_DXE_SMM_READY_TO_LOCK_PROTOCOL_GUID EFI_DXE_MM_READY_TO_LOCK_PROTOCOL_GUID
  31
  32 extern EFI_GUID gEfiDxeSmmReadyToLockProtocolGuid;
  33
  34 #endif