DuetPkg/FvbRuntimeService/FvbInfo.c

   1 /**@file
   2 Copyright (c) 2007, Intel Corporation
   3 All rights reserved. This program and the accompanying materials
   4 are licensed and made available under the terms and conditions of the BSD License
   5 which accompanies this distribution.  The full text of the license may be found at
   6 http://opensource.org/licenses/bsd-license.php
   7
   8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11 Module Name:
  12
  13   FvbInfo.c
  14
  15 Abstract:
  16
  17   Defines data structure that is the volume header found.These data is intent
  18   to decouple FVB driver with FV header.
  19
  20 **/
  21 #include "FileIo.h"
  22 #include "FlashLayout.h"
  23
  24 typedef struct {
  25   UINT64                      FvLength;
  26   EFI_FIRMWARE_VOLUME_HEADER  FvbInfo;
  27   EFI_FV_BLOCK_MAP_ENTRY      End;
  28 } EFI_FVB_MEDIA_INFO;
  29
  30 #define FVB_MEDIA_BLOCK_SIZE    FIRMWARE_BLOCK_SIZE
  31 #define RECOVERY_BOIS_BLOCK_NUM FIRMWARE_BLOCK_NUMBER
  32 #define SYSTEM_NV_BLOCK_NUM     2
  33
  34 EFI_FVB_MEDIA_INFO  mPlatformFvbMediaInfo[] = {
  35   //
  36   // Systen NvStorage FVB
  37   //
  38   {
  39     NV_STORAGE_FVB_SIZE,
  40     {
  41       {
  42         0,
  43       },  // ZeroVector[16]
  44       EFI_SYSTEM_NV_DATA_FV_GUID,
  45       NV_STORAGE_FVB_SIZE,
  46       EFI_FVH_SIGNATURE,
  47       EFI_FVB2_READ_ENABLED_CAP |
  48         EFI_FVB2_READ_STATUS |
  49         EFI_FVB2_WRITE_ENABLED_CAP |
  50         EFI_FVB2_WRITE_STATUS |
  51         EFI_FVB2_ERASE_POLARITY,
  52       sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY),
  53       0,  // CheckSum
  54       0,  // ExtHeaderOffset
  55       {
  56         0,
  57       },  // Reserved[1]
  58       1,  // Revision
  59       {
  60         NV_STORAGE_FVB_BLOCK_NUM,
  61         FV_BLOCK_SIZE,
  62       }
  63     },
  64     {
  65       0,
  66       0
  67     }
  68   },
  69   //
  70   // System FTW FVB
  71   //
  72   {
  73     NV_FTW_FVB_SIZE,
  74     {
  75       {
  76         0,
  77       },  // ZeroVector[16]
  78       EFI_SYSTEM_NV_DATA_FV_GUID,
  79       NV_FTW_FVB_SIZE,
  80       EFI_FVH_SIGNATURE,
  81       EFI_FVB2_READ_ENABLED_CAP |
  82         EFI_FVB2_READ_STATUS |
  83         EFI_FVB2_WRITE_ENABLED_CAP |
  84         EFI_FVB2_WRITE_STATUS |
  85         EFI_FVB2_ERASE_POLARITY,
  86       sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY),
  87       0,  // CheckSum
  88       0,  // ExtHeaderOffset
  89       {
  90         0,
  91       },  // Reserved[1]
  92       1,  // Revision
  93       {
  94         NV_FTW_FVB_BLOCK_NUM,
  95         FV_BLOCK_SIZE,
  96       }
  97     },
  98     {
  99       0,
 100       0
 101     }
 102   }
 103 };
 104
 105 EFI_STATUS
 106 GetFvbInfo (
 107   IN  UINT64                        FvLength,
 108   OUT EFI_FIRMWARE_VOLUME_HEADER    **FvbInfo
 109   )
 110 {
 111   UINTN Index;
 112
 113   for (Index = 0; Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB_MEDIA_INFO); Index += 1) {
 114     if (mPlatformFvbMediaInfo[Index].FvLength == FvLength) {
 115       *FvbInfo = &mPlatformFvbMediaInfo[Index].FvbInfo;
 116       return EFI_SUCCESS;
 117     }
 118   }
 119
 120   return EFI_NOT_FOUND;
 121 }