FmpDevicePkg/Library/CapsuleUpdatePolicyLibNull/CapsuleUpdatePolicyLibNull.c

   1 /**  @file
   2   Provides platform policy services used during a capsule update.
   3
   4   Copyright (c) 2016, Microsoft Corporation. All rights reserved.<BR>
   5   Copyright (c) 2018, Intel Corporation. All rights reserved.<BR>
   6
   7   Redistribution and use in source and binary forms, with or without
   8   modification, are permitted provided that the following conditions are met:
   9   1. Redistributions of source code must retain the above copyright notice,
  10   this list of conditions and the following disclaimer.
  11   2. Redistributions in binary form must reproduce the above copyright notice,
  12   this list of conditions and the following disclaimer in the documentation
  13   and/or other materials provided with the distribution.
  14
  15   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  16   ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18   IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  19   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  20   BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  22   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  23   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  24   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25
  26 **/
  27
  28 #include <PiDxe.h>
  29 #include <Library/CapsuleUpdatePolicyLib.h>
  30
  31 /**
  32   Determine if the system power state supports a capsule update.
  33
  34   @param[out] Good  Returns TRUE if system power state supports a capsule
  35                     update.  Returns FALSE if system power state does not
  36                     support a capsule update.  Return value is only valid if
  37                     return status is EFI_SUCCESS.
  38
  39   @retval EFI_SUCCESS            Good parameter has been updated with result.
  40   @retval EFI_INVALID_PARAMETER  Good is NULL.
  41   @retval EFI_DEVICE_ERROR       System power state can not be determined.
  42
  43 **/
  44 EFI_STATUS
  45 EFIAPI
  46 CheckSystemPower (
  47   OUT BOOLEAN  *Good
  48   )
  49 {
  50   *Good = TRUE;
  51   return EFI_SUCCESS;
  52 }
  53
  54 /**
  55   Determines if the system thermal state supports a capsule update.
  56
  57   @param[out] Good  Returns TRUE if system thermal state supports a capsule
  58                     update.  Returns FALSE if system thermal state does not
  59                     support a capsule update.  Return value is only valid if
  60                     return status is EFI_SUCCESS.
  61
  62   @retval EFI_SUCCESS            Good parameter has been updated with result.
  63   @retval EFI_INVALID_PARAMETER  Good is NULL.
  64   @retval EFI_DEVICE_ERROR       System thermal state can not be determined.
  65
  66 **/
  67 EFI_STATUS
  68 EFIAPI
  69 CheckSystemThermal (
  70   IN OUT BOOLEAN  *Good
  71   )
  72 {
  73   *Good = TRUE;
  74   return EFI_SUCCESS;
  75 }
  76
  77 /**
  78   Determines if the system environment state supports a capsule update.
  79
  80   @param[out] Good  Returns TRUE if system environment state supports a capsule
  81                     update.  Returns FALSE if system environment state does not
  82                     support a capsule update.  Return value is only valid if
  83                     return status is EFI_SUCCESS.
  84
  85   @retval EFI_SUCCESS            Good parameter has been updated with result.
  86   @retval EFI_INVALID_PARAMETER  Good is NULL.
  87   @retval EFI_DEVICE_ERROR       System environment state can not be determined.
  88
  89 **/
  90 EFI_STATUS
  91 EFIAPI
  92 CheckSystemEnvironment (
  93   IN OUT BOOLEAN  *Good
  94   )
  95 {
  96   *Good = TRUE;
  97   return EFI_SUCCESS;
  98 }
  99
 100 /**
 101   Determines if the Lowest Supported Version checks should be performed.  The
 102   expected result from this function is TRUE.  A platform can choose to return
 103   FALSE (e.g. during manufacturing or servicing) to allow a capsule update to a
 104   version below the current Lowest Supported Version.
 105
 106   @retval TRUE   The lowest supported version check is required.
 107   @retval FALSE  Do not perform lowest support version check.
 108
 109 **/
 110 BOOLEAN
 111 EFIAPI
 112 IsLowestSupportedVersionCheckRequired (
 113   VOID
 114   )
 115 {
 116   return TRUE;
 117 }
 118
 119 /**
 120   Determines if the FMP device should be locked when the event specified by
 121   PcdFmpDeviceLockEventGuid is signaled. The expected result from this function
 122   is TRUE so the FMP device is always locked.  A platform can choose to return
 123   FALSE (e.g. during manufacturing) to allow FMP devices to remain unlocked.
 124
 125   @retval TRUE   The FMP device lock action is required at lock event guid.
 126   @retval FALSE  Do not perform FMP device lock at lock event guid.
 127
 128 **/
 129 BOOLEAN
 130 EFIAPI
 131 IsLockFmpDeviceAtLockEventGuidRequired (
 132   VOID
 133   )
 134 {
 135   return TRUE;
 136 }