MdeModulePkg/Core/Pei/BootMode/BootMode.c

   1 /*++
   2
   3 Copyright (c) 2006, Intel Corporation
   4 All rights reserved. This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   BootMode.c
  15
  16 Abstract:
  17
  18   EFI PEI Core Boot Mode services
  19
  20
  21
  22 Revision History
  23
  24 --*/
  25
  26 //
  27 // Include common header file for this module.
  28 //
  29 #include "CommonHeader.h"
  30
  31 #include <PeiMain.h>
  32
  33 EFI_STATUS
  34 EFIAPI
  35 PeiGetBootMode (
  36   IN EFI_PEI_SERVICES  **PeiServices,
  37   OUT EFI_BOOT_MODE *BootMode
  38   )
  39 /*++
  40
  41 Routine Description:
  42
  43   This service enables PEIMs to ascertain the present value of the boot mode.
  44
  45 Arguments:
  46
  47   PeiServices    - The PEI core services table.
  48   BootMode       - A pointer to contain the value of the boot mode.
  49
  50 Returns:
  51
  52   EFI_SUCCESS           - The boot mode was returned successfully.
  53   EFI_INVALID_PARAMETER - BootMode is NULL.
  54
  55 --*/
  56 {
  57   PEI_CORE_INSTANCE                    *PrivateData;
  58   EFI_HOB_HANDOFF_INFO_TABLE    *HandOffHob;
  59
  60
  61   if (BootMode == NULL) {
  62     return EFI_INVALID_PARAMETER;
  63   }
  64
  65   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
  66
  67   HandOffHob  = (PrivateData->HobList.HandoffInformationTable);
  68
  69   *BootMode   = HandOffHob->BootMode;
  70
  71
  72   return EFI_SUCCESS;
  73 }
  74
  75
  76 EFI_STATUS
  77 EFIAPI
  78 PeiSetBootMode (
  79   IN EFI_PEI_SERVICES  **PeiServices,
  80   IN EFI_BOOT_MODE     BootMode
  81   )
  82 /*++
  83
  84 Routine Description:
  85
  86   This service enables PEIMs to update the boot mode variable.
  87
  88 Arguments:
  89
  90   PeiServices    - The PEI core services table.
  91   BootMode       - The value of the boot mode to set.
  92
  93 Returns:
  94
  95   EFI_SUCCESS    - The value was successfully updated
  96
  97 --*/
  98 {
  99   PEI_CORE_INSTANCE                    *PrivateData;
 100   EFI_HOB_HANDOFF_INFO_TABLE    *HandOffHob;
 101
 102
 103   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
 104
 105   HandOffHob  = (PrivateData->HobList.HandoffInformationTable);
 106
 107   HandOffHob->BootMode = BootMode;
 108
 109
 110   return EFI_SUCCESS;
 111 }