Esempi in C++ (Cpp) per FvbEraseBlocks

Esempio n. 1

File: NorFlashFvbDxe.c Progetto: Cutty/edk2

EFI_STATUS
EFIAPI
NorFlashFvbInitialize (
  IN NOR_FLASH_INSTANCE* Instance
  )
{
  EFI_STATUS  Status;
  UINT32      FvbNumLba;
  EFI_BOOT_MODE BootMode;

  DEBUG((DEBUG_BLKIO,"NorFlashFvbInitialize\n"));

  Instance->Initialized = TRUE;

  // Set the index of the first LBA for the FVB
  Instance->StartLba = (PcdGet32 (PcdFlashNvStorageVariableBase) - Instance->RegionBaseAddress) / Instance->Media.BlockSize;

  BootMode = GetBootModeHob ();
  if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
    Status = EFI_INVALID_PARAMETER;
  } else {
    // Determine if there is a valid header at the beginning of the NorFlash
    Status = ValidateFvHeader (Instance);
  }

  // Install the Default FVB header if required  
  if (EFI_ERROR(Status)) {
    // There is no valid header, so time to install one.
    DEBUG((EFI_D_ERROR,"NorFlashFvbInitialize: ERROR - The FVB Header is not valid. Installing a correct one for this volume.\n"));

    // Erase all the NorFlash that is reserved for variable storage
    FvbNumLba = (PcdGet32(PcdFlashNvStorageVariableSize) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) + PcdGet32(PcdFlashNvStorageFtwSpareSize)) / Instance->Media.BlockSize;

    Status = FvbEraseBlocks (&Instance->FvbProtocol, (EFI_LBA)0, FvbNumLba, EFI_LBA_LIST_TERMINATOR);
    if (EFI_ERROR(Status)) {
      return Status;
    }

    // Install all appropriate headers
    Status = InitializeFvAndVariableStoreHeaders (Instance);
    if (EFI_ERROR(Status)) {
      return Status;
    }
  }
  return Status;
}

Esempio n. 2

File: NorFlashFvbDxe.c Progetto: lersek/edk2

EFI_STATUS
EFIAPI
NorFlashFvbInitialize (
  IN NOR_FLASH_INSTANCE* Instance
  )
{
  EFI_STATUS  Status;
  UINT32      FvbNumLba;
  EFI_BOOT_MODE BootMode;
  UINTN       RuntimeMmioRegionSize;

  DEBUG((DEBUG_BLKIO,"NorFlashFvbInitialize\n"));
  ASSERT((Instance != NULL));

  //
  // Declare the Non-Volatile storage as EFI_MEMORY_RUNTIME
  //

  // Note: all the NOR Flash region needs to be reserved into the UEFI Runtime memory;
  //       even if we only use the small block region at the top of the NOR Flash.
  //       The reason is when the NOR Flash memory is set into program mode, the command
  //       is written as the base of the flash region (ie: Instance->DeviceBaseAddress)
  RuntimeMmioRegionSize = (Instance->RegionBaseAddress - Instance->DeviceBaseAddress) + Instance->Size;

  Status = gDS->AddMemorySpace (
      EfiGcdMemoryTypeMemoryMappedIo,
      Instance->DeviceBaseAddress, RuntimeMmioRegionSize,
      EFI_MEMORY_UC | EFI_MEMORY_RUNTIME
      );
  ASSERT_EFI_ERROR (Status);

  Status = gDS->SetMemorySpaceAttributes (
      Instance->DeviceBaseAddress, RuntimeMmioRegionSize,
      EFI_MEMORY_UC | EFI_MEMORY_RUNTIME);
  ASSERT_EFI_ERROR (Status);

  mFlashNvStorageVariableBase = FixedPcdGet32 (PcdFlashNvStorageVariableBase);

  // Set the index of the first LBA for the FVB
  Instance->StartLba = (PcdGet32 (PcdFlashNvStorageVariableBase) - Instance->RegionBaseAddress) / Instance->Media.BlockSize;

  BootMode = GetBootModeHob ();
  if (BootMode == BOOT_WITH_DEFAULT_SETTINGS) {
    Status = EFI_INVALID_PARAMETER;
  } else {
    // Determine if there is a valid header at the beginning of the NorFlash
    Status = ValidateFvHeader (Instance);
  }

  // Install the Default FVB header if required
  if (EFI_ERROR(Status)) {
    // There is no valid header, so time to install one.
    DEBUG ((EFI_D_INFO, "%a: The FVB Header is not valid.\n", __FUNCTION__));
    DEBUG ((EFI_D_INFO, "%a: Installing a correct one for this volume.\n",
      __FUNCTION__));

    // Erase all the NorFlash that is reserved for variable storage
    FvbNumLba = (PcdGet32(PcdFlashNvStorageVariableSize) + PcdGet32(PcdFlashNvStorageFtwWorkingSize) + PcdGet32(PcdFlashNvStorageFtwSpareSize)) / Instance->Media.BlockSize;

    Status = FvbEraseBlocks (&Instance->FvbProtocol, (EFI_LBA)0, FvbNumLba, EFI_LBA_LIST_TERMINATOR);
    if (EFI_ERROR(Status)) {
      return Status;
    }

    // Install all appropriate headers
    Status = InitializeFvAndVariableStoreHeaders (Instance);
    if (EFI_ERROR(Status)) {
      return Status;
    }
  }

  //
  // The driver implementing the variable read service can now be dispatched;
  // the varstore headers are in place.
  //
  Status = gBS->InstallProtocolInterface (
                  &gImageHandle,
                  &gEdkiiNvVarStoreFormattedGuid,
                  EFI_NATIVE_INTERFACE,
                  NULL
                  );
  ASSERT_EFI_ERROR (Status);

  //
  // Register for the virtual address change event
  //
  Status = gBS->CreateEventEx (
                  EVT_NOTIFY_SIGNAL,
                  TPL_NOTIFY,
                  FvbVirtualNotifyEvent,
                  NULL,
                  &gEfiEventVirtualAddressChangeGuid,
                  &mFvbVirtualAddrChangeEvent
                  );
  ASSERT_EFI_ERROR (Status);

  return Status;
}