SecurityPkg/Library/SmmTcg2PhysicalPresenceLib/StandaloneMmTcg2PhysicalPresenceLib.c

   1 /** @file
   2   Handle TPM 2.0 physical presence requests from OS.
   3
   4   This library will handle TPM 2.0 physical presence request from OS.
   5
   6   Caution: This module requires additional review when modified.
   7   This driver will have external input - variable.
   8   This external input must be validated carefully to avoid security issue.
   9
  10   Tcg2PhysicalPresenceLibSubmitRequestToPreOSFunction() and Tcg2PhysicalPresenceLibGetUserConfirmationStatusFunction()
  11   will receive untrusted input and do validation.
  12
  13 Copyright (c) 2015 - 2020, Intel Corporation. All rights reserved.<BR>
  14 Copyright (c) Microsoft Corporation.
  15 SPDX-License-Identifier: BSD-2-Clause-Patent
  16
  17 **/
  18
  19 #include <PiMm.h>
  20
  21 #include "MmTcg2PhysicalPresenceLibCommon.h"
  22
  23 /**
  24   The constructor function locates SmmVariable protocol.
  25
  26   It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
  27
  28   @param  ImageHandle   The firmware allocated handle for the EFI image.
  29   @param  SystemTable   A pointer to the EFI System Table.
  30
  31   @retval EFI_SUCCESS   The constructor successfully added string package.
  32   @retval Other value   The constructor can't add string package.
  33 **/
  34 EFI_STATUS
  35 EFIAPI
  36 Tcg2PhysicalPresenceLibStandaloneMmConstructor (
  37   IN EFI_HANDLE           ImageHandle,
  38   IN EFI_MM_SYSTEM_TABLE  *SystemTable
  39   )
  40 {
  41   return Tcg2PhysicalPresenceLibCommonConstructor ();
  42 }