ubuntu20.04 init

hc

2024-03-25 edb30157bad0c0001c32b854271ace01d3b9a16a

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/**@file 
  Defines data structure that is the volume header found. 
  These data is intent to decouple FVB driver with FV header. 
 
Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> 
SPDX-License-Identifier: BSD-2-Clause-Patent 
 
**/ 
 
#include "SpiFvbServiceCommon.h" 
 
#define FIRMWARE_BLOCK_SIZE         0x10000 
#define FVB_MEDIA_BLOCK_SIZE        FIRMWARE_BLOCK_SIZE 
 
#define NV_STORAGE_BASE_ADDRESS     FixedPcdGet32(PcdFlashNvStorageVariableBase) 
#define SYSTEM_NV_BLOCK_NUM         ((FixedPcdGet32(PcdFlashNvStorageVariableSize)+ FixedPcdGet32(PcdFlashNvStorageFtwWorkingSize) + FixedPcdGet32(PcdFlashNvStorageFtwSpareSize))/ FVB_MEDIA_BLOCK_SIZE) 
 
typedef struct { 
  EFI_PHYSICAL_ADDRESS        BaseAddress; 
  EFI_FIRMWARE_VOLUME_HEADER  FvbInfo; 
  EFI_FV_BLOCK_MAP_ENTRY      End[1]; 
} EFI_FVB2_MEDIA_INFO; 
 
// 
// This data structure contains a template of all correct FV headers, which is used to restore 
// Fv header if it's corrupted. 
// 
EFI_FVB2_MEDIA_INFO mPlatformFvbMediaInfo[] = { 
  // 
  // Systen NvStorage FVB 
  // 
  { 
    NV_STORAGE_BASE_ADDRESS, 
    { 
      {0,}, //ZeroVector[16] 
      EFI_SYSTEM_NV_DATA_FV_GUID, 
      FVB_MEDIA_BLOCK_SIZE * SYSTEM_NV_BLOCK_NUM, 
      EFI_FVH_SIGNATURE, 
      0x0004feff, // check MdePkg/Include/Pi/PiFirmwareVolume.h for details on EFI_FVB_ATTRIBUTES_2 
      sizeof (EFI_FIRMWARE_VOLUME_HEADER) + sizeof (EFI_FV_BLOCK_MAP_ENTRY), 
      0,    //CheckSum which will be calucated dynamically. 
      0,    //ExtHeaderOffset 
      {0,}, //Reserved[1] 
      2,    //Revision 
      { 
        { 
          SYSTEM_NV_BLOCK_NUM, 
          FVB_MEDIA_BLOCK_SIZE, 
        } 
      } 
    }, 
    { 
      { 
        0, 
        0 
      } 
    } 
  } 
}; 
 
EFI_STATUS 
GetFvbInfo ( 
  IN  EFI_PHYSICAL_ADDRESS         FvBaseAddress, 
  OUT EFI_FIRMWARE_VOLUME_HEADER   **FvbInfo 
  ) 
{ 
  UINTN                       Index; 
  EFI_FIRMWARE_VOLUME_HEADER  *FvHeader; 
 
  for (Index = 0; Index < sizeof (mPlatformFvbMediaInfo) / sizeof (EFI_FVB2_MEDIA_INFO); Index++) { 
    if (mPlatformFvbMediaInfo[Index].BaseAddress == FvBaseAddress) { 
      FvHeader = &mPlatformFvbMediaInfo[Index].FvbInfo; 
 
      // 
      // Update the checksum value of FV header. 
      // 
      FvHeader->Checksum = CalculateCheckSum16 ( (UINT16 *) FvHeader, FvHeader->HeaderLength); 
 
      *FvbInfo = FvHeader; 
 
      DEBUG ((DEBUG_INFO, "BaseAddr: 0x%lx \n", FvBaseAddress)); 
      DEBUG ((DEBUG_INFO, "FvLength: 0x%lx \n", (*FvbInfo)->FvLength)); 
      DEBUG ((DEBUG_INFO, "HeaderLength: 0x%x \n", (*FvbInfo)->HeaderLength)); 
      DEBUG ((DEBUG_INFO, "Header Checksum: 0x%X\n", (*FvbInfo)->Checksum)); 
      DEBUG ((DEBUG_INFO, "FvBlockMap[0].NumBlocks: 0x%x \n", (*FvbInfo)->BlockMap[0].NumBlocks)); 
      DEBUG ((DEBUG_INFO, "FvBlockMap[0].BlockLength: 0x%x \n", (*FvbInfo)->BlockMap[0].Length)); 
      DEBUG ((DEBUG_INFO, "FvBlockMap[1].NumBlocks: 0x%x \n", (*FvbInfo)->BlockMap[1].NumBlocks)); 
      DEBUG ((DEBUG_INFO, "FvBlockMap[1].BlockLength: 0x%x \n\n", (*FvbInfo)->BlockMap[1].Length)); 
 
      return EFI_SUCCESS; 
    } 
  } 
  return EFI_NOT_FOUND; 
}