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   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <Base.h>
  16 #include <Library/SmmLib.h>
  17
  18 /**
  19   Triggers an SMI at boot time.
  20
  21   This function triggers a software SMM interrupt at boot time.
  22
  23 **/
  24 VOID
  25 EFIAPI
  26 TriggerBootServiceSoftwareSmi (
  27   VOID
  28   )
  29 {
  30   return;
  31 }
  32
  33
  34 /**
  35   Triggers an SMI at run time.
  36
  37   This function triggers a software SMM interrupt at run time.
  38
  39 **/
  40 VOID
  41 EFIAPI
  42 TriggerRuntimeSoftwareSmi (
  43   VOID
  44   )
  45 {
  46   return;
  47 }
  48
  49
  50
  51 /**
  52   Test if a boot time software SMI happened.
  53
  54   This function tests if a software SMM interrupt happened. If a software SMM
  55   interrupt happened and it was triggered at boot time, it returns TRUE. Otherwise,
  56   it returns FALSE.
  57
  58   @retval TRUE   A software SMI triggered at boot time happened.
  59   @retval FALSE  No software SMI happened or the software SMI was triggered at run time.
  60
  61 **/
  62 BOOLEAN
  63 EFIAPI
  64 IsBootServiceSoftwareSmi (
  65   VOID
  66   )
  67 {
  68   return FALSE;
  69 }
  70
  71
  72 /**
  73   Test if a run time software SMI happened.
  74
  75   This function tests if a software SMM interrupt happened. If a software SMM
  76   interrupt happened and it was triggered at run time, it returns TRUE. Otherwise,
  77   it returns FALSE.
  78
  79   @retval TRUE   A software SMI triggered at run time happened.
  80   @retval FALSE  No software SMI happened or the software SMI was triggered at boot time.
  81
  82 **/
  83 BOOLEAN
  84 EFIAPI
  85 IsRuntimeSoftwareSmi (
  86   VOID
  87   )
  88 {
  89   return FALSE;
  90 }
  91
  92 /**
  93   Clear APM SMI Status Bit; Set the EOS bit.
  94
  95 **/
  96 VOID
  97 EFIAPI
  98 ClearSmi (
  99   VOID
 100   )
 101 {
 102   return;
 103 }