MdePkg/Library/SmmLibNull/SmmLibNull.c

   1 /** @file
   2   NULL instance of SMM Library.
   3
   4   Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <Base.h>
  10 #include <Library/SmmLib.h>
  11
  12 /**
  13   Triggers an SMI at boot time.
  14
  15   This function triggers a software SMM interrupt at boot time.
  16
  17 **/
  18 VOID
  19 EFIAPI
  20 TriggerBootServiceSoftwareSmi (
  21   VOID
  22   )
  23 {
  24   return;
  25 }
  26
  27 /**
  28   Triggers an SMI at run time.
  29
  30   This function triggers a software SMM interrupt at run time.
  31
  32 **/
  33 VOID
  34 EFIAPI
  35 TriggerRuntimeSoftwareSmi (
  36   VOID
  37   )
  38 {
  39   return;
  40 }
  41
  42 /**
  43   Test if a boot time software SMI happened.
  44
  45   This function tests if a software SMM interrupt happened. If a software SMM
  46   interrupt happened and it was triggered at boot time, it returns TRUE. Otherwise,
  47   it returns FALSE.
  48
  49   @retval TRUE   A software SMI triggered at boot time happened.
  50   @retval FALSE  No software SMI happened or the software SMI was triggered at run time.
  51
  52 **/
  53 BOOLEAN
  54 EFIAPI
  55 IsBootServiceSoftwareSmi (
  56   VOID
  57   )
  58 {
  59   return FALSE;
  60 }
  61
  62 /**
  63   Test if a run time software SMI happened.
  64
  65   This function tests if a software SMM interrupt happened. If a software SMM
  66   interrupt happened and it was triggered at run time, it returns TRUE. Otherwise,
  67   it returns FALSE.
  68
  69   @retval TRUE   A software SMI triggered at run time happened.
  70   @retval FALSE  No software SMI happened or the software SMI was triggered at boot time.
  71
  72 **/
  73 BOOLEAN
  74 EFIAPI
  75 IsRuntimeSoftwareSmi (
  76   VOID
  77   )
  78 {
  79   return FALSE;
  80 }
  81
  82 /**
  83   Clear APM SMI Status Bit; Set the EOS bit.
  84
  85 **/
  86 VOID
  87 EFIAPI
  88 ClearSmi (
  89   VOID
  90   )
  91 {
  92   return;
  93 }