EdkModulePkg/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 #include <PeiMain.h>
  27
  28 EFI_STATUS
  29 EFIAPI
  30 PeiGetBootMode (
  31   IN EFI_PEI_SERVICES  **PeiServices,
  32   OUT EFI_BOOT_MODE *BootMode
  33   )
  34 /*++
  35
  36 Routine Description:
  37
  38   This service enables PEIMs to ascertain the present value of the boot mode.
  39
  40 Arguments:
  41
  42   PeiServices    - The PEI core services table.
  43   BootMode       - A pointer to contain the value of the boot mode.
  44
  45 Returns:
  46
  47   EFI_SUCCESS           - The boot mode was returned successfully.
  48   EFI_INVALID_PARAMETER - BootMode is NULL.
  49
  50 --*/
  51 {
  52   PEI_CORE_INSTANCE                    *PrivateData;
  53   EFI_HOB_HANDOFF_INFO_TABLE    *HandOffHob;
  54
  55
  56   if (BootMode == NULL) {
  57     return EFI_INVALID_PARAMETER;
  58   }
  59
  60   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
  61
  62   HandOffHob  = (PrivateData->HobList.HandoffInformationTable);
  63
  64   *BootMode   = HandOffHob->BootMode;
  65
  66
  67   return EFI_SUCCESS;
  68 };
  69
  70
  71 EFI_STATUS
  72 EFIAPI
  73 PeiSetBootMode (
  74   IN EFI_PEI_SERVICES  **PeiServices,
  75   IN EFI_BOOT_MODE     BootMode
  76   )
  77 /*++
  78
  79 Routine Description:
  80
  81   This service enables PEIMs to update the boot mode variable.
  82
  83 Arguments:
  84
  85   PeiServices    - The PEI core services table.
  86   BootMode       - The value of the boot mode to set.
  87
  88 Returns:
  89
  90   EFI_SUCCESS    - The value was successfully updated
  91
  92 --*/
  93 {
  94   PEI_CORE_INSTANCE                    *PrivateData;
  95   EFI_HOB_HANDOFF_INFO_TABLE    *HandOffHob;
  96
  97
  98   PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);
  99
 100   HandOffHob  = (PrivateData->HobList.HandoffInformationTable);
 101
 102   HandOffHob->BootMode = BootMode;
 103
 104
 105   return EFI_SUCCESS;
 106 };