Beispiel #1
0
/**

  Service routine for BdsInstance->Entry(). Devices are connected, the
  consoles are initialized, and the boot options are tried.

  @param This             Protocol Instance structure.

**/
VOID
EFIAPI
BdsEntry (
  IN EFI_BDS_ARCH_PROTOCOL  *This
  )
{
  LIST_ENTRY                      DriverOptionList;
  LIST_ENTRY                      BootOptionList;
  UINTN                           BootNextSize;
  CHAR16                          *FirmwareVendor;
  EFI_STATUS                      Status;
  UINT16                          BootTimeOut;
  UINTN                           Index;
  EDKII_VARIABLE_LOCK_PROTOCOL    *VariableLock;

  //
  // Insert the performance probe
  //
  PERF_END (NULL, "DXE", NULL, 0);
  PERF_START (NULL, "BDS", NULL, 0);

  //
  // Initialize the global system boot option and driver option
  //
  InitializeListHead (&DriverOptionList);
  InitializeListHead (&BootOptionList);

  //
  // Initialize hotkey service
  //
  InitializeHotkeyService ();

  //
  // Fill in FirmwareVendor and FirmwareRevision from PCDs
  //
  FirmwareVendor = (CHAR16 *)PcdGetPtr (PcdFirmwareVendor);
  gST->FirmwareVendor = AllocateRuntimeCopyPool (StrSize (FirmwareVendor), FirmwareVendor);
  ASSERT (gST->FirmwareVendor != NULL);
  gST->FirmwareRevision = PcdGet32 (PcdFirmwareRevision);

  //
  // Fixup Tasble CRC after we updated Firmware Vendor and Revision
  //
  gST->Hdr.CRC32 = 0;
  gBS->CalculateCrc32 ((VOID *)gST, sizeof(EFI_SYSTEM_TABLE), &gST->Hdr.CRC32);

  //
  // Validate Variable.
  //
  BdsFormalizeEfiGlobalVariable();

  //
  // Mark the read-only variables if the Variable Lock protocol exists
  //
  Status = gBS->LocateProtocol (&gEdkiiVariableLockProtocolGuid, NULL, (VOID **) &VariableLock);
  DEBUG ((EFI_D_INFO, "[BdsDxe] Locate Variable Lock protocol - %r\n", Status));
  if (!EFI_ERROR (Status)) {
    for (Index = 0; Index < ARRAY_SIZE (mReadOnlyVariables); Index++) {
      Status = VariableLock->RequestToLock (VariableLock, mReadOnlyVariables[Index], &gEfiGlobalVariableGuid);
      ASSERT_EFI_ERROR (Status);
    }
  }

  //
  // Report Status Code to indicate connecting drivers will happen
  //
  REPORT_STATUS_CODE (
    EFI_PROGRESS_CODE,
    (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_BEGIN_CONNECTING_DRIVERS)
    );

  InitializeHwErrRecSupport();

  //
  // Initialize L"Timeout" EFI global variable.
  //
  BootTimeOut = PcdGet16 (PcdPlatformBootTimeOut);
  if (BootTimeOut != 0xFFFF) {
    //
    // If time out value equal 0xFFFF, no need set to 0xFFFF to variable area because UEFI specification
    // define same behavior between no value or 0xFFFF value for L"Timeout".
    //
    BdsDxeSetVariableAndReportStatusCodeOnError (
                    L"Timeout",
                    &gEfiGlobalVariableGuid,
                    EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_NON_VOLATILE,
                    sizeof (UINT16),
                    &BootTimeOut
                    );
  }

  //
  // bugbug: platform specific code
  // Initialize the platform specific string and language
  //
  InitializeStringSupport ();
  InitializeLanguage (TRUE);
  InitializeFrontPage (TRUE);

  //
  // Do the platform init, can be customized by OEM/IBV
  //
  PERF_START (NULL, "PlatformBds", "BDS", 0);
  PlatformBdsInit ();

  //
  // Set up the device list based on EFI 1.1 variables
  // process Driver#### and Load the driver's in the
  // driver option list
  //
  BdsLibBuildOptionFromVar (&DriverOptionList, L"DriverOrder");
  if (!IsListEmpty (&DriverOptionList)) {
    BdsLibLoadDrivers (&DriverOptionList);
  }
  //
  // Check if we have the boot next option
  //
  mBootNext = BdsLibGetVariableAndSize (
                L"BootNext",
                &gEfiGlobalVariableGuid,
                &BootNextSize
                );

  //
  // Setup some platform policy here
  //
  PlatformBdsPolicyBehavior (&DriverOptionList, &BootOptionList, BdsProcessCapsules, BdsMemoryTest);
  PERF_END (NULL, "PlatformBds", "BDS", 0);

  //
  // BDS select the boot device to load OS
  //
  BdsBootDeviceSelect ();

  //
  // Only assert here since this is the right behavior, we should never
  // return back to DxeCore.
  //
  ASSERT (FALSE);

  return ;
}
/**

  Service routine for BdsInstance->Entry(). Devices are connected, the
  consoles are initialized, and the boot options are tried.

  @param This             Protocol Instance structure.

**/
VOID
EFIAPI
BdsEntry (
  IN EFI_BDS_ARCH_PROTOCOL  *This
  )
{
  LIST_ENTRY                      DriverOptionList;
  LIST_ENTRY                      BootOptionList;
  UINTN                           BootNextSize;
  CHAR16                          *FirmwareVendor;

  //
  // Insert the performance probe
  //
  PERF_END (NULL, "DXE", NULL, 0);
  PERF_START (NULL, "BDS", NULL, 0);

  //
  // Initialize the global system boot option and driver option
  //
  InitializeListHead (&DriverOptionList);
  InitializeListHead (&BootOptionList);

  //
  // Initialize hotkey service
  //
  InitializeHotkeyService ();

  //
  // Fill in FirmwareVendor and FirmwareRevision from PCDs
  //
  FirmwareVendor = (CHAR16 *)PcdGetPtr (PcdFirmwareVendor);
  gST->FirmwareVendor = AllocateRuntimeCopyPool (StrSize (FirmwareVendor), FirmwareVendor);
  ASSERT (gST->FirmwareVendor != NULL);
  gST->FirmwareRevision = PcdGet32 (PcdFirmwareRevision);

  //
  // Fixup Tasble CRC after we updated Firmware Vendor and Revision
  //
  gBS->CalculateCrc32 ((VOID *)gST, sizeof(EFI_SYSTEM_TABLE), &gST->Hdr.CRC32);

  //
  // Validate Variable.
  //
  BdsFormalizeEfiGlobalVariable();

  //
  // Do the platform init, can be customized by OEM/IBV
  //
  PERF_START (NULL, "PlatformBds", "BDS", 0);
  PlatformBdsInit ();

  InitializeHwErrRecSupport();

  //
  // bugbug: platform specific code
  // Initialize the platform specific string and language
  //
  InitializeStringSupport ();
  InitializeLanguage (TRUE);
  InitializeFrontPage (TRUE);

  //
  // Set up the device list based on EFI 1.1 variables
  // process Driver#### and Load the driver's in the
  // driver option list
  //
  BdsLibBuildOptionFromVar (&DriverOptionList, L"DriverOrder");
  if (!IsListEmpty (&DriverOptionList)) {
    BdsLibLoadDrivers (&DriverOptionList);
  }
  //
  // Check if we have the boot next option
  //
  mBootNext = BdsLibGetVariableAndSize (
                L"BootNext",
                &gEfiGlobalVariableGuid,
                &BootNextSize
                );

  //
  // Setup some platform policy here
  //
  PlatformBdsPolicyBehavior (&DriverOptionList, &BootOptionList, BdsProcessCapsules, BdsMemoryTest);
  PERF_END (NULL, "PlatformBds", "BDS", 0);

  //
  // BDS select the boot device to load OS
  //
  BdsBootDeviceSelect ();

  //
  // Only assert here since this is the right behavior, we should never
  // return back to DxeCore.
  //
  ASSERT (FALSE);

  return ;
}