MdeModulePkg/Library/PiSmmCoreSmmServicesTableLib/PiSmmCoreSmmServicesTableLib.c

   1 /** @file
   2   SMM Core SMM Services Table Library.
   3
   4   Copyright (c) 2010 - 2018, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <PiSmm.h>
  10 #include <Library/SmmServicesTableLib.h>
  11 #include <Library/DebugLib.h>
  12
  13 EFI_SMM_SYSTEM_TABLE2         *gSmst = NULL;
  14 extern EFI_SMM_SYSTEM_TABLE2  gSmmCoreSmst;
  15
  16 /**
  17   The constructor function caches the pointer of SMM Services Table.
  18
  19   @param  ImageHandle   The firmware allocated handle for the EFI image.
  20   @param  SystemTable   A pointer to the EFI System Table.
  21
  22   @retval EFI_SUCCESS   The constructor always returns EFI_SUCCESS.
  23
  24 **/
  25 EFI_STATUS
  26 EFIAPI
  27 SmmCoreSmmServicesTableLibConstructor (
  28   IN EFI_HANDLE        ImageHandle,
  29   IN EFI_SYSTEM_TABLE  *SystemTable
  30   )
  31 {
  32   gSmst = &gSmmCoreSmst;
  33   return EFI_SUCCESS;
  34 }
  35
  36 /**
  37   This function allows the caller to determine if the driver is executing in
  38   System Management Mode(SMM).
  39
  40   This function returns TRUE if the driver is executing in SMM and FALSE if the
  41   driver is not executing in SMM.
  42
  43   @retval  TRUE  The driver is executing in System Management Mode (SMM).
  44   @retval  FALSE The driver is not executing in System Management Mode (SMM).
  45
  46 **/
  47 BOOLEAN
  48 EFIAPI
  49 InSmm (
  50   VOID
  51   )
  52 {
  53   return TRUE;
  54 }