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 /**
  29   Triggers an SMI at run time.
  30
  31   This function triggers a software SMM interrupt at run time.
  32
  33 **/
  34 VOID
  35 EFIAPI
  36 TriggerRuntimeSoftwareSmi (
  37   VOID
  38   )
  39 {
  40   return;
  41 }
  42
  43
  44
  45 /**
  46   Test if a boot time software SMI happened.
  47
  48   This function tests if a software SMM interrupt happened. If a software SMM
  49   interrupt happened and it was triggered at boot time, it returns TRUE. Otherwise,
  50   it returns FALSE.
  51
  52   @retval TRUE   A software SMI triggered at boot time happened.
  53   @retval FALSE  No software SMI happened or the software SMI was triggered at run time.
  54
  55 **/
  56 BOOLEAN
  57 EFIAPI
  58 IsBootServiceSoftwareSmi (
  59   VOID
  60   )
  61 {
  62   return FALSE;
  63 }
  64
  65
  66 /**
  67   Test if a run time software SMI happened.
  68
  69   This function tests if a software SMM interrupt happened. If a software SMM
  70   interrupt happened and it was triggered at run time, it returns TRUE. Otherwise,
  71   it returns FALSE.
  72
  73   @retval TRUE   A software SMI triggered at run time happened.
  74   @retval FALSE  No software SMI happened or the software SMI was triggered at boot time.
  75
  76 **/
  77 BOOLEAN
  78 EFIAPI
  79 IsRuntimeSoftwareSmi (
  80   VOID
  81   )
  82 {
  83   return FALSE;
  84 }
  85
  86 /**
  87   Clear APM SMI Status Bit; Set the EOS bit.
  88
  89 **/
  90 VOID
  91 EFIAPI
  92 ClearSmi (
  93   VOID
  94   )
  95 {
  96   return;
  97 }