Vlv2TbltDevicePkg/PlatformInitPei/FlashMap.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   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
  16 Module Name:
  17
  18   FlashMap.c
  19
  20 Abstract:
  21
  22   Build GUIDed HOBs for platform specific flash map.
  23
  24 --*/
  25
  26 #include "Efi.h"
  27 #include "Pei.h"
  28 #include "PeiLib.h"
  29 #include "PeiLib.h"
  30 #include "EfiFlashMap.h"
  31 #include EFI_PROTOCOL_CONSUMER (FirmwareVolumeBlock)
  32 #include EFI_GUID_DEFINITION (FlashMapHob)
  33 #include EFI_GUID_DEFINITION (SystemNvDataGuid)
  34 #include EFI_GUID_DEFINITION (FirmwareFileSystem)
  35
  36 EFI_GUID                            mFvBlockGuid      = EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL_GUID;
  37 EFI_GUID                            mFfsGuid          = EFI_FIRMWARE_FILE_SYSTEM_GUID;
  38 EFI_GUID                            mSystemDataGuid   = EFI_SYSTEM_NV_DATA_HOB_GUID;
  39
  40 static EFI_FLASH_AREA_DATA          mFlashAreaData[]  = {
  41         //
  42   // Variable area
  43   //
  44   { FixedPcdGet32 (PcdFlashNvStorageVariableBase),
  45     FixedPcdGet32 (PcdFlashNvStorageVariableSize),
  46     EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV,
  47     EFI_FLASH_AREA_EFI_VARIABLES },
  48
  49   //
  50   // Boot block 2nd part
  51   //
  52   { FixedPcdGet32 (PcdFlashFvRecovery2Base),
  53     FixedPcdGet32 (PcdFlashFvRecovery2Size),
  54     EFI_FLASH_AREA_SUBFV | EFI_FLASH_AREA_MEMMAPPED_FV,
  55     EFI_FLASH_AREA_FTW_BACKUP },
  56
  57   //
  58   // Recovery FV
  59   //
  60   { FixedPcdGet32 (PcdFlashFvRecoveryBase),
  61     FixedPcdGet32 (PcdFlashFvRecoverySize),
  62     EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV,
  63     EFI_FLASH_AREA_RECOVERY_BIOS },
  64
  65   //
  66   // Main FV
  67   //
  68   { FixedPcdGet32 (PcdFlashFvMainBase),
  69     FixedPcdGet32 (PcdFlashFvMainSize),
  70     EFI_FLASH_AREA_FV | EFI_FLASH_AREA_MEMMAPPED_FV,
  71     EFI_FLASH_AREA_MAIN_BIOS }
  72
  73 };
  74
  75 #define NUM_FLASH_AREA_DATA (ARRAY_SIZE (mFlashAreaData))
  76
  77 /**
  78   Build GUID HOBs for platform specific flash map.
  79
  80   @param FfsHeader     Pointer this FFS file header.
  81   @param PeiServices   General purpose services available to every PEIM.
  82
  83   @retval EFI_SUCCESS   Guid HOBs for platform flash map is built.
  84   @retval Otherwise     Failed to build the Guid HOB data.
  85
  86 **/
  87 EFI_STATUS
  88 PeimInitializeFlashMap (
  89   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  90   IN EFI_PEI_SERVICES          **PeiServices
  91   )
  92 {
  93   UINTN                         Index;
  94   EFI_FLASH_AREA_HOB_DATA       FlashHobData;
  95
  96   //
  97   // Build flash area entries as GUIDed HOBs.
  98   //
  99   for (Index = 0; Index < NUM_FLASH_AREA_DATA; Index++) {
 100     ZeroMem(&FlashHobData, sizeof (EFI_FLASH_AREA_HOB_DATA));
 101
 102     FlashHobData.AreaType               = mFlashAreaData[Index].AreaType;
 103     FlashHobData.NumberOfEntries        = 1;
 104     FlashHobData.SubAreaData.Attributes = mFlashAreaData[Index].Attributes;
 105     FlashHobData.SubAreaData.Base       = (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Base;
 106     FlashHobData.SubAreaData.Length     = (EFI_PHYSICAL_ADDRESS) (UINTN) mFlashAreaData[Index].Length;
 107
 108     switch (FlashHobData.AreaType) {
 109     case EFI_FLASH_AREA_RECOVERY_BIOS:
 110     case EFI_FLASH_AREA_MAIN_BIOS:
 111       CopyMem (
 112         &FlashHobData.AreaTypeGuid,
 113         &mFfsGuid,
 114         sizeof (EFI_GUID)
 115         );
 116       CopyMem (
 117         &FlashHobData.SubAreaData.FileSystem,
 118         &mFvBlockGuid,
 119         sizeof (EFI_GUID)
 120         );
 121       break;
 122
 123     case EFI_FLASH_AREA_GUID_DEFINED:
 124       CopyMem (
 125         &FlashHobData.AreaTypeGuid,
 126         &mSystemDataGuid,
 127         sizeof (EFI_GUID)
 128         );
 129       CopyMem (
 130         &FlashHobData.SubAreaData.FileSystem,
 131         &mFvBlockGuid,
 132         sizeof (EFI_GUID)
 133         );
 134       break;
 135
 136     default:
 137       break;
 138     }
 139
 140     PeiBuildHobGuidData(PeiServices,
 141                         &gEfiFlashMapHobGuid,
 142                         &FlashHobData,
 143                         sizeof (EFI_FLASH_AREA_HOB_DATA)
 144                         );
 145   }
 146   return EFI_SUCCESS;
 147 }
 148