C++ EFI_DEVICE_PATH_TO_TEXT_PROTOCOL::ConvertDevicePathToText方法代码示例

/**
  This function converts an input device structure to a Unicode string.

  @param DevPath                  A pointer to the device path structure.

  @return A new allocated Unicode string that represents the device path.

**/
CHAR16 *
BmDevicePathToStr (
  IN EFI_DEVICE_PATH_PROTOCOL     *DevPath
  )
{
  EFI_STATUS                       Status;
  CHAR16                           *ToText;
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *DevPathToText;

  if (DevPath == NULL) {
    return NULL;
  }

  Status = gBS->LocateProtocol (
                  &gEfiDevicePathToTextProtocolGuid,
                  NULL,
                  (VOID **) &DevPathToText
                  );
  ASSERT_EFI_ERROR (Status);
  ToText = DevPathToText->ConvertDevicePathToText (
                            DevPath,
                            FALSE,
                            TRUE
                            );
  ASSERT (ToText != NULL);
  return ToText;
}

/**
  Create an action OpCode with QuestionID and DevicePath on a given OpCodeHandle.

  @param[in]  QuestionID            The question ID.
  @param[in]  DevicePath            Points to device path.
  @param[in]  OpCodeHandle          Points to container for dynamic created opcodes.

**/
VOID
AddDevicePath (
  IN  UINTN                                     QuestionID,
  IN  EFI_DEVICE_PATH_PROTOCOL                  *DevicePath,
  IN     VOID                                   *OpCodeHandle
  )
{
  EFI_STATUS                        Status;
  EFI_DEVICE_PATH_PROTOCOL          *Next;
  EFI_STRING_ID                     NameID;
  EFI_STRING                        DriverName;
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL  *DevicePathText;

  //
  // Locate device path to text protocol.
  //
  Status = gBS->LocateProtocol (
                  &gEfiDevicePathToTextProtocolGuid,
                  NULL,
                  (VOID **) &DevicePathText
                  );
  if (EFI_ERROR (Status)) {
    return ;
  }
  
  //
  // Get driver file name node.
  //
  Next = DevicePath;
  while (!IsDevicePathEnd (Next)) {
    DevicePath  = Next;
    Next        = NextDevicePathNode (Next);
  }

  //
  // Display the device path in form.
  //
  DriverName = DevicePathText->ConvertDevicePathToText (DevicePath, FALSE, FALSE);
  NameID = HiiSetString (mCallbackInfo->HiiHandle, 0, DriverName, NULL);
  FreePool (DriverName);
  if (NameID == 0) {
    return ;
  }

  HiiCreateActionOpCode (
    OpCodeHandle,                   // Container for dynamic created opcodes
    (UINT16) QuestionID,            // Question ID
    NameID,                         // Prompt text
    STRING_TOKEN (STR_NULL_STRING), // Help text
    EFI_IFR_FLAG_CALLBACK,          // Question flag
    0                               // Action String ID
    );
}

/**
  Extract device path for given HII handle and class guid.

  @param Handle          The HII handle.

  @retval  NULL          Fail to get the device path string.
  @return  PathString    Get the device path string.

**/
CHAR16 *
ExtractDevicePathFromHiiHandle (
  IN      EFI_HII_HANDLE      Handle
  )
{
  EFI_STATUS                       Status;
  EFI_HANDLE                       DriverHandle;
  EFI_DEVICE_PATH_PROTOCOL         *DevicePath;  
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL *PathToText;
  CHAR16                           *NewString;

  ASSERT (Handle != NULL);

  if (Handle == NULL) {
    return NULL;
  }

  Status = gHiiDatabase->GetPackageListHandle (gHiiDatabase, Handle, &DriverHandle);
 if (EFI_ERROR (Status)) {
    return NULL;
  }

  //
  // Get the device path by the got Driver handle .
  //
  Status = gBS->HandleProtocol (DriverHandle, &gEfiDevicePathProtocolGuid, (VOID **) &DevicePath);
  if (EFI_ERROR (Status)) {
    return NULL;
 }

  Status = gBS->LocateProtocol (
                  &gEfiDevicePathToTextProtocolGuid,
                  NULL,
                  (VOID **) &PathToText
                  );
  if (EFI_ERROR (Status)) {
    return NULL;
  }

  //
  // Get device path string.
  //
  NewString = PathToText->ConvertDevicePathToText(DevicePath, FALSE, FALSE);

  return NewString;
}

EFI_STATUS
GenerateDeviceDescriptionName (
  IN  EFI_HANDLE  Handle,
  IN OUT CHAR16*  Description
  )
{
  EFI_STATUS                        Status;
  EFI_COMPONENT_NAME_PROTOCOL*      ComponentName2Protocol;
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
  EFI_DEVICE_PATH_PROTOCOL*         DevicePathProtocol;
  CHAR16*                           DriverName;
  CHAR16*                           DevicePathTxt;
  EFI_DEVICE_PATH*                  DevicePathNode;

  ComponentName2Protocol = NULL;
  Status = gBS->HandleProtocol (Handle, &gEfiComponentName2ProtocolGuid, (VOID **)&ComponentName2Protocol);
  if (!EFI_ERROR(Status)) {
    //TODO: Fixme. we must find the best langague
    Status = ComponentName2Protocol->GetDriverName (ComponentName2Protocol,"en",&DriverName);
    if (!EFI_ERROR(Status)) {
      StrnCpy (Description, DriverName, BOOT_DEVICE_DESCRIPTION_MAX);
    }
  }

  if (EFI_ERROR(Status)) {
    // Use the lastest non null entry of the Device path as a description
    Status = gBS->HandleProtocol (Handle, &gEfiDevicePathProtocolGuid, (VOID **)&DevicePathProtocol);
    if (EFI_ERROR(Status)) {
      return Status;
    }

    // Convert the last non end-type Device Path Node in text for the description
    DevicePathNode = GetLastDevicePathNode (DevicePathProtocol);
    Status = gBS->LocateProtocol (&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
    ASSERT_EFI_ERROR(Status);
    DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (DevicePathNode, TRUE, TRUE);
    StrnCpy (Description, DevicePathTxt, BOOT_DEVICE_DESCRIPTION_MAX);
    FreePool (DevicePathTxt);
  }

  return EFI_SUCCESS;
}

EFI_STATUS
EblDevicePaths (
  IN UINTN  Argc,
  IN CHAR8  **Argv
  )
{
  EFI_STATUS Status;
  UINTN                              HandleCount;
  EFI_HANDLE                         *HandleBuffer;
  UINTN                              Index;
  CHAR16*                            String;
  EFI_DEVICE_PATH_PROTOCOL*          DevicePathProtocol;
  EFI_DEVICE_PATH_TO_TEXT_PROTOCOL*  DevicePathToTextProtocol;

  BdsConnectAllDrivers();

  Status = gBS->LocateProtocol(&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
  if (EFI_ERROR (Status)) {
    AsciiPrint ("Did not find the DevicePathToTextProtocol.\n");
    return EFI_SUCCESS;
  }

  Status = gBS->LocateHandleBuffer (ByProtocol, &gEfiDevicePathProtocolGuid, NULL, &HandleCount, &HandleBuffer);
  if (EFI_ERROR (Status)) {
    AsciiPrint ("No device path found\n");
    return EFI_SUCCESS;
  }

  for (Index = 0; Index < HandleCount; Index++) {
    Status = gBS->HandleProtocol (HandleBuffer[Index], &gEfiDevicePathProtocolGuid, (VOID **)&DevicePathProtocol);
    String = DevicePathToTextProtocol->ConvertDevicePathToText(DevicePathProtocol,TRUE,TRUE);
    Print (L"[0x%X] %s\n",(UINTN)HandleBuffer[Index], String);
  }

  return EFI_SUCCESS;
}

EFI_STATUS
DefineDefaultBootEntries (
  VOID
  )
{
  BDS_LOAD_OPTION*                    BdsLoadOption;
  UINTN                               Size;
  EFI_STATUS                          Status;
  EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;
  EFI_DEVICE_PATH*                    BootDevicePath;
  UINTN                               CmdLineSize;
  UINTN                               CmdLineAsciiSize;
  CHAR16*                             DefaultBootArgument;
  CHAR8*                              AsciiDefaultBootArgument;

  //
  // If Boot Order does not exist then create a default entry
  //
  Size = 0;
  Status = gRT->GetVariable (L"BootOrder", &gEfiGlobalVariableGuid, NULL, &Size, NULL);
  if (Status == EFI_NOT_FOUND) {
    if ((PcdGetPtr(PcdDefaultBootDevicePath) == NULL) || (StrLen ((CHAR16*)PcdGetPtr(PcdDefaultBootDevicePath)) == 0)) {
      return EFI_UNSUPPORTED;
    }

    Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
    if (EFI_ERROR(Status)) {
      // You must provide an implementation of DevicePathFromTextProtocol in your firmware (eg: DevicePathDxe)
      DEBUG((EFI_D_ERROR,"Error: Bds requires DevicePathFromTextProtocol\n"));
      return Status;
    }
    BootDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdDefaultBootDevicePath));

    DEBUG_CODE_BEGIN();
      // We convert back to the text representation of the device Path to see if the initial text is correct
      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
      CHAR16* DevicePathTxt;

      Status = gBS->LocateProtocol(&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
      ASSERT_EFI_ERROR(Status);
      DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (BootDevicePath, TRUE, TRUE);

      if (StrCmp ((CHAR16*)PcdGetPtr (PcdDefaultBootDevicePath), DevicePathTxt) != 0) {
        DEBUG ((EFI_D_ERROR, "Device Path given: '%s' Device Path expected: '%s'\n",
            (CHAR16*)PcdGetPtr (PcdDefaultBootDevicePath), DevicePathTxt));
        ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
      }

      FreePool (DevicePathTxt);
    DEBUG_CODE_END();

    // Create the entry is the Default values are correct
    if (BootDevicePath != NULL) {
      // We do not support NULL pointer
      ASSERT (PcdGetPtr (PcdDefaultBootArgument) != NULL);

      //
      // Logic to handle ASCII or Unicode default parameters
      //
      if (*(CHAR8*)PcdGetPtr (PcdDefaultBootArgument) == '\0') {
        CmdLineSize = 0;
        CmdLineAsciiSize = 0;
        DefaultBootArgument = NULL;
        AsciiDefaultBootArgument = NULL;
      } else if (IsUnicodeString ((CHAR16*)PcdGetPtr (PcdDefaultBootArgument))) {
        // The command line is a Unicode string
        DefaultBootArgument = (CHAR16*)PcdGetPtr (PcdDefaultBootArgument);
        CmdLineSize = StrSize (DefaultBootArgument);

        // Initialize ASCII variables
        CmdLineAsciiSize = CmdLineSize / 2;
        AsciiDefaultBootArgument = AllocatePool (CmdLineAsciiSize);
        if (AsciiDefaultBootArgument == NULL) {
          return EFI_OUT_OF_RESOURCES;
        }
        UnicodeStrToAsciiStr ((CHAR16*)PcdGetPtr (PcdDefaultBootArgument), AsciiDefaultBootArgument);
      } else {
        // The command line is a ASCII string
        AsciiDefaultBootArgument = (CHAR8*)PcdGetPtr (PcdDefaultBootArgument);
        CmdLineAsciiSize = AsciiStrSize (AsciiDefaultBootArgument);

        // Initialize ASCII variables
        CmdLineSize = CmdLineAsciiSize * 2;
        DefaultBootArgument = AllocatePool (CmdLineSize);
        if (DefaultBootArgument == NULL) {
          return EFI_OUT_OF_RESOURCES;
        }
        AsciiStrToUnicodeStr (AsciiDefaultBootArgument, DefaultBootArgument);
      }

      BootOptionCreate (LOAD_OPTION_ACTIVE | LOAD_OPTION_CATEGORY_BOOT,
        (CHAR16*)PcdGetPtr (PcdDefaultBootDescription),
        BootDevicePath,
        (UINT8 *)DefaultBootArgument, // OptionalData
        CmdLineSize,                  // OptionalDataSize
        &BdsLoadOption
        );
      FreePool (BdsLoadOption);

      if (DefaultBootArgument == (CHAR16*)PcdGetPtr (PcdDefaultBootArgument)) {
//.........这里部分代码省略.........

STATIC
EFI_STATUS
InitializeConsolePipe (
  IN EFI_DEVICE_PATH    *ConsoleDevicePaths,
  IN EFI_GUID           *Protocol,
  OUT EFI_HANDLE        *Handle,
  OUT VOID*             *Interface
  )
{
  EFI_STATUS                Status;
  UINTN                     Size;
  UINTN                     NoHandles;
  EFI_HANDLE                *Buffer;
  EFI_DEVICE_PATH_PROTOCOL* DevicePath;

  // Connect all the Device Path Consoles
  while (ConsoleDevicePaths != NULL) {
    DevicePath = GetNextDevicePathInstance (&ConsoleDevicePaths, &Size);

    Status = BdsConnectDevicePath (DevicePath, Handle, NULL);
    DEBUG_CODE_BEGIN();
      if (EFI_ERROR(Status)) {
        // We convert back to the text representation of the device Path
        EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
        CHAR16* DevicePathTxt;
        EFI_STATUS Status;

        Status = gBS->LocateProtocol(&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
        if (!EFI_ERROR(Status)) {
          DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (DevicePath, TRUE, TRUE);

          DEBUG((EFI_D_ERROR,"Fail to start the console with the Device Path '%s'. (Error '%r')\n", DevicePathTxt, Status));

          FreePool (DevicePathTxt);
        }
      }
    DEBUG_CODE_END();

    // If the console splitter driver is not supported by the platform then use the first Device Path
    // instance for the console interface.
    if (!EFI_ERROR(Status) && (*Interface == NULL)) {
      Status = gBS->HandleProtocol (*Handle, Protocol, Interface);
    }
  }

  // No Device Path has been defined for this console interface. We take the first protocol implementation
  if (*Interface == NULL) {
    Status = gBS->LocateHandleBuffer (ByProtocol, Protocol, NULL, &NoHandles, &Buffer);
    if (EFI_ERROR (Status)) {
      BdsConnectAllDrivers();
      Status = gBS->LocateHandleBuffer (ByProtocol, Protocol, NULL, &NoHandles, &Buffer);
    }

    if (!EFI_ERROR(Status)) {
      *Handle = Buffer[0];
      Status = gBS->HandleProtocol (*Handle, Protocol, Interface);
      ASSERT_EFI_ERROR(Status);
      FreePool (Buffer);
    }
  } else {
    Status = EFI_SUCCESS;
  }

  return Status;
}

EFI_STATUS
LinuxLoaderConfig (
  IN EFI_LOADED_IMAGE_PROTOCOL   *LoadedImage
  )
{
  EFI_STATUS                   Status;
  LINUX_LOADER_ACTION          Choice;
  UINTN                        BootOrderSize;
  UINT16*                      BootOrder;
  UINTN                        BootOrderCount;
  UINTN                        Index;
  CHAR16                       Description[MAX_ASCII_INPUT];
  CHAR8                        CmdLine[MAX_ASCII_INPUT];
  CHAR16                       Initrd[MAX_STR_INPUT];
  UINT16                       InitrdPathListLength;
  UINT16                       CmdLineLength;
  BDS_LOAD_OPTION*             BdsLoadOption;
  BDS_LOAD_OPTION**            SupportedBdsLoadOptions;
  UINTN                        SupportedBdsLoadOptionCount;
  LINUX_LOADER_OPTIONAL_DATA*  LinuxOptionalData;
  EFI_DEVICE_PATH*             DevicePathRoot;

  Choice = (LINUX_LOADER_ACTION)0;
  SupportedBdsLoadOptions = NULL;
  SupportedBdsLoadOptionCount = 0;

  do {
    Print (L"[%d] Create new Linux Boot Entry\n",LINUX_LOADER_NEW);
    Print (L"[%d] Update Linux Boot Entry\n",LINUX_LOADER_UPDATE);

    Print (L"Option: ");
    Status = GetHIInputInteger ((UINTN*)&Choice);
    if (Status == EFI_INVALID_PARAMETER) {
      Print (L"\n");
      return Status;
    } else if ((Choice != LINUX_LOADER_NEW) && (Choice != LINUX_LOADER_UPDATE)) {
      Print (L"Error: the option should be either '%d' or '%d'\n",LINUX_LOADER_NEW,LINUX_LOADER_UPDATE);
      Status = EFI_INVALID_PARAMETER;
    }
  } while (EFI_ERROR(Status));

  if (Choice == LINUX_LOADER_UPDATE) {
    // If no compatible entry then we just create a new entry
    Choice = LINUX_LOADER_NEW;

    // Scan the OptionalData of every entry for the correct signature
    Status = GetGlobalEnvironmentVariable (L"BootOrder", NULL, &BootOrderSize, (VOID**)&BootOrder);
    if (!EFI_ERROR(Status)) {
      BootOrderCount = BootOrderSize / sizeof(UINT16);

      // Allocate an array to handle maximum number of supported Boot Entry
      SupportedBdsLoadOptions = (BDS_LOAD_OPTION**)AllocatePool(sizeof(BDS_LOAD_OPTION*) * BootOrderCount);

      SupportedBdsLoadOptionCount = 0;

      // Check if the signature is present in the list of the current Boot entries
      for (Index = 0; Index < BootOrderCount; Index++) {
        Status = BootOptionFromLoadOptionIndex (BootOrder[Index], &BdsLoadOption);
        if (!EFI_ERROR(Status)) {
          if ((BdsLoadOption->OptionalDataSize >= sizeof(UINT32)) &&
              (*(UINT32*)BdsLoadOption->OptionalData == LINUX_LOADER_SIGNATURE)) {
            SupportedBdsLoadOptions[SupportedBdsLoadOptionCount++] = BdsLoadOption;
            Choice = LINUX_LOADER_UPDATE;
          }
        }
      }
    }
    FreePool (BootOrder);
  }

  if (Choice == LINUX_LOADER_NEW) {
    Description[0] = '\0';
    CmdLine[0]     = '\0';
    Initrd[0]      = '\0';

    BdsLoadOption = (BDS_LOAD_OPTION*)AllocateZeroPool (sizeof(BDS_LOAD_OPTION));

    DEBUG_CODE_BEGIN();
      CHAR16*                           DevicePathTxt;
      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;

      Status = gBS->LocateProtocol (&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
      ASSERT_EFI_ERROR(Status);
      DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (LoadedImage->FilePath, TRUE, TRUE);

      Print(L"EFI OS Loader: %s\n",DevicePathTxt);

      FreePool(DevicePathTxt);
    DEBUG_CODE_END();

    //
    // Fill the known fields of BdsLoadOption
    //

    BdsLoadOption->Attributes = LOAD_OPTION_ACTIVE | LOAD_OPTION_CATEGORY_BOOT;

    // Get the full Device Path for this file
    Status = gBS->HandleProtocol (LoadedImage->DeviceHandle, &gEfiDevicePathProtocolGuid, (VOID **)&DevicePathRoot);
    ASSERT_EFI_ERROR(Status);

//.........这里部分代码省略.........

EFI_STATUS
BootMenuMain (
  VOID
  )
{
  LIST_ENTRY                    BootOptionsList;
  UINTN                         OptionCount;
  UINTN                         BootOptionCount;
  EFI_STATUS                    Status;
  LIST_ENTRY*                   Entry;
  BDS_LOAD_OPTION*              BootOption;
  UINTN                         BootOptionSelected;
  UINTN                         Index;
  UINTN                         BootMainEntryCount;
  BOOLEAN                       IsUnicode;

  BootOption         = NULL;
  BootMainEntryCount = sizeof(BootMainEntries) / sizeof(struct BOOT_MAIN_ENTRY);

  while (TRUE) {
    // Get Boot#### list
    BootOptionList (&BootOptionsList);

    OptionCount = 1;

    // Display the Boot options
    for (Entry = GetFirstNode (&BootOptionsList);
         !IsNull (&BootOptionsList,Entry);
         Entry = GetNextNode (&BootOptionsList,Entry)
         )
    {
      BootOption = LOAD_OPTION_FROM_LINK(Entry);

      Print(L"[%d] %s\n", OptionCount, BootOption->Description);

      DEBUG_CODE_BEGIN();
        CHAR16*                           DevicePathTxt;
        EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
        ARM_BDS_LOADER_OPTIONAL_DATA*     OptionalData;
        UINTN                             CmdLineSize;
        ARM_BDS_LOADER_TYPE               LoaderType;

        Status = gBS->LocateProtocol (&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
        if (EFI_ERROR(Status)) {
          // You must provide an implementation of DevicePathToTextProtocol in your firmware (eg: DevicePathDxe)
          DEBUG((EFI_D_ERROR,"Error: Bds requires DevicePathToTextProtocol\n"));
          return Status;
        }
        DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (BootOption->FilePathList, TRUE, TRUE);

        Print(L"\t- %s\n",DevicePathTxt);

        // If it is a supported BootEntry then print its details
        if (IS_ARM_BDS_BOOTENTRY (BootOption)) {
          OptionalData = BootOption->OptionalData;
          LoaderType = (ARM_BDS_LOADER_TYPE)ReadUnaligned32 ((CONST UINT32*)&OptionalData->Header.LoaderType);
          if ((LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) || (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT)) {
            if (ReadUnaligned16 (&OptionalData->Arguments.LinuxArguments.InitrdSize) > 0) {
              CmdLineSize = ReadUnaligned16 (&OptionalData->Arguments.LinuxArguments.CmdLineSize);
              DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (
                  GetAlignedDevicePath ((EFI_DEVICE_PATH*)((UINTN)(&OptionalData->Arguments.LinuxArguments + 1) + CmdLineSize)), TRUE, TRUE);
              Print(L"\t- Initrd: %s\n", DevicePathTxt);
            }
            if (ReadUnaligned16 (&OptionalData->Arguments.LinuxArguments.CmdLineSize) > 0) {
              Print(L"\t- Arguments: %a\n", (&OptionalData->Arguments.LinuxArguments + 1));
            }
          }

          switch (LoaderType) {
            case BDS_LOADER_EFI_APPLICATION:
              Print(L"\t- LoaderType: EFI Application\n");
              break;

            case BDS_LOADER_KERNEL_LINUX_ATAG:
              Print(L"\t- LoaderType: Linux kernel with ATAG support\n");
              break;

            case BDS_LOADER_KERNEL_LINUX_FDT:
              Print(L"\t- LoaderType: Linux kernel with FDT support\n");
              break;

            default:
              Print(L"\t- LoaderType: Not recognized (%d)\n", LoaderType);
          }
        } else if (BootOption->OptionalData != NULL) {
          if (IsPrintableString (BootOption->OptionalData, &IsUnicode)) {
            if (IsUnicode) {
              Print (L"\t- Arguments: %s\n", BootOption->OptionalData);
            } else {
              AsciiPrint ("\t- Arguments: %a\n", BootOption->OptionalData);
            }
          }
        }
        FreePool(DevicePathTxt);
      DEBUG_CODE_END();

      OptionCount++;
    }
    BootOptionCount = OptionCount-1;

//.........这里部分代码省略.........

/**
  Worker function that displays the list of boot options that is passed in.

  The function loops over the entries of the list of boot options that is passed
  in. For each entry, the boot option description is displayed on a single line
  along with the position of the option in the list. In debug mode, the UEFI
  device path and the arguments of the boot option are displayed as well in
  subsequent lines.

  @param[in]  BootOptionsList  List of the boot options

**/
STATIC
VOID
DisplayBootOptions (
  IN  LIST_ENTRY*   BootOptionsList
  )
{
  EFI_STATUS        Status;
  UINTN             BootOptionCount;
  LIST_ENTRY       *Entry;
  BDS_LOAD_OPTION  *BdsLoadOption;
  BOOLEAN           IsUnicode;

  BootOptionCount = 0 ;
  for (Entry = GetFirstNode (BootOptionsList);
       !IsNull (BootOptionsList, Entry);
       Entry = GetNextNode (BootOptionsList, Entry)
      ) {

    BdsLoadOption = LOAD_OPTION_FROM_LINK (Entry);
    Print (L"[%d] %s\n", ++BootOptionCount, BdsLoadOption->Description);

    DEBUG_CODE_BEGIN ();
      CHAR16*                           DevicePathTxt;
      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
      ARM_BDS_LOADER_TYPE               LoaderType;
      ARM_BDS_LOADER_OPTIONAL_DATA*     OptionalData;

      Status = gBS->LocateProtocol (
                     &gEfiDevicePathToTextProtocolGuid,
                     NULL,
                     (VOID **)&DevicePathToTextProtocol
                     );
      ASSERT_EFI_ERROR (Status);
      DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (
                                                  BdsLoadOption->FilePathList,
                                                  TRUE,
                                                  TRUE
                                                  );
      Print (L"\t- %s\n", DevicePathTxt);

      OptionalData = BdsLoadOption->OptionalData;
      if (IS_ARM_BDS_BOOTENTRY (BdsLoadOption)) {
        LoaderType = (ARM_BDS_LOADER_TYPE)ReadUnaligned32 ((CONST UINT32*)&OptionalData->Header.LoaderType);
        if ((LoaderType == BDS_LOADER_KERNEL_LINUX_ATAG) ||
            (LoaderType == BDS_LOADER_KERNEL_LINUX_FDT )   ) {
          Print (L"\t- Arguments: %a\n", &OptionalData->Arguments.LinuxArguments + 1);
        }
      } else if (OptionalData != NULL) {
        if (IsPrintableString (OptionalData, &IsUnicode)) {
          if (IsUnicode) {
            Print (L"\t- Arguments: %s\n", OptionalData);
          } else {
            AsciiPrint ("\t- Arguments: %a\n", OptionalData);
          }
        }
      }

      FreePool (DevicePathTxt);
    DEBUG_CODE_END ();
  }
}

STATIC
EFI_STATUS
SelectBootDevice (
  OUT BDS_SUPPORTED_DEVICE** SupportedBootDevice
  )
{
  EFI_STATUS  Status;
  LIST_ENTRY  SupportedDeviceList;
  UINTN       SupportedDeviceCount;
  LIST_ENTRY* Entry;
  UINTN       SupportedDeviceSelected;
  UINTN       Index;

  //
  // List the Boot Devices supported
  //

  // Start all the drivers first
  BdsConnectAllDrivers ();

  // List the supported devices
  Status = BootDeviceListSupportedInit (&SupportedDeviceList);
  ASSERT_EFI_ERROR(Status);

  SupportedDeviceCount = 0;
  for (Entry = GetFirstNode (&SupportedDeviceList);
       !IsNull (&SupportedDeviceList,Entry);
       Entry = GetNextNode (&SupportedDeviceList,Entry)
       )
  {
    *SupportedBootDevice = SUPPORTED_BOOT_DEVICE_FROM_LINK(Entry);
    Print(L"[%d] %s\n",SupportedDeviceCount+1,(*SupportedBootDevice)->Description);

    DEBUG_CODE_BEGIN();
      CHAR16*                           DevicePathTxt;
      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;

      Status = gBS->LocateProtocol (&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
      ASSERT_EFI_ERROR(Status);
      DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText ((*SupportedBootDevice)->DevicePathProtocol,TRUE,TRUE);

      Print(L"\t- %s\n",DevicePathTxt);

      FreePool(DevicePathTxt);
    DEBUG_CODE_END();

    SupportedDeviceCount++;
  }

  if (SupportedDeviceCount == 0) {
    Print(L"There is no supported device.\n");
    Status = EFI_ABORTED;
    goto EXIT;
  }

  //
  // Select the Boot Device
  //
  SupportedDeviceSelected = 0;
  while (SupportedDeviceSelected == 0) {
    Print(L"Select the Boot Device: ");
    Status = GetHIInputInteger (&SupportedDeviceSelected);
    if (EFI_ERROR(Status)) {
      Status = EFI_ABORTED;
      goto EXIT;
    } else if ((SupportedDeviceSelected == 0) || (SupportedDeviceSelected > SupportedDeviceCount)) {
      Print(L"Invalid input (max %d)\n",SupportedDeviceCount);
      SupportedDeviceSelected = 0;
    }
  }

  //
  // Get the Device Path for the selected boot device
  //
  Index = 1;
  for (Entry = GetFirstNode (&SupportedDeviceList);
       !IsNull (&SupportedDeviceList,Entry);
       Entry = GetNextNode (&SupportedDeviceList,Entry)
       )
  {
    if (Index == SupportedDeviceSelected) {
      *SupportedBootDevice = SUPPORTED_BOOT_DEVICE_FROM_LINK(Entry);
      break;
    }
    Index++;
  }

EXIT:
  BootDeviceListSupportedFree (&SupportedDeviceList, *SupportedBootDevice);
  return Status;
}

EFI_STATUS
DefineDefaultBootEntries (
  VOID
  )
{
  BDS_LOAD_OPTION*                    BdsLoadOption;
  UINTN                               Size;
  EFI_STATUS                          Status;
  EFI_DEVICE_PATH_FROM_TEXT_PROTOCOL* EfiDevicePathFromTextProtocol;
  EFI_DEVICE_PATH*                    BootDevicePath;
  UINT8*                              OptionalData;
  UINTN                               OptionalDataSize;
  ARM_BDS_LOADER_ARGUMENTS*           BootArguments;
  ARM_BDS_LOADER_TYPE                 BootType;
  EFI_DEVICE_PATH*                    InitrdPath;
  UINTN                               InitrdSize;
  UINTN                               CmdLineSize;
  UINTN                               CmdLineAsciiSize;
  CHAR16*                             DefaultBootArgument;
  CHAR8*                              AsciiDefaultBootArgument;

  //
  // If Boot Order does not exist then create a default entry
  //
  Size = 0;
  Status = gRT->GetVariable (L"BootOrder", &gEfiGlobalVariableGuid, NULL, &Size, NULL);
  if (Status == EFI_NOT_FOUND) {
    if ((PcdGetPtr(PcdDefaultBootDevicePath) == NULL) || (StrLen ((CHAR16*)PcdGetPtr(PcdDefaultBootDevicePath)) == 0)) {
      return EFI_UNSUPPORTED;
    }

    Status = gBS->LocateProtocol (&gEfiDevicePathFromTextProtocolGuid, NULL, (VOID **)&EfiDevicePathFromTextProtocol);
    if (EFI_ERROR(Status)) {
      // You must provide an implementation of DevicePathFromTextProtocol in your firmware (eg: DevicePathDxe)
      DEBUG((EFI_D_ERROR,"Error: Bds requires DevicePathFromTextProtocol\n"));
      return Status;
    }
    BootDevicePath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdDefaultBootDevicePath));

    DEBUG_CODE_BEGIN();
      // We convert back to the text representation of the device Path to see if the initial text is correct
      EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol;
      CHAR16* DevicePathTxt;

      Status = gBS->LocateProtocol(&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
      ASSERT_EFI_ERROR(Status);
      DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (BootDevicePath, TRUE, TRUE);

      ASSERT (StrCmp ((CHAR16*)PcdGetPtr(PcdDefaultBootDevicePath), DevicePathTxt) == 0);

      FreePool (DevicePathTxt);
    DEBUG_CODE_END();

    // Create the entry is the Default values are correct
    if (BootDevicePath != NULL) {
      BootType = (ARM_BDS_LOADER_TYPE)PcdGet32 (PcdDefaultBootType);

      // We do not support NULL pointer
      ASSERT (PcdGetPtr (PcdDefaultBootArgument) != NULL);

      //
      // Logic to handle ASCII or Unicode default parameters
      //
      if (*(CHAR8*)PcdGetPtr (PcdDefaultBootArgument) == '\0') {
        CmdLineSize = 0;
        CmdLineAsciiSize = 0;
        DefaultBootArgument = NULL;
        AsciiDefaultBootArgument = NULL;
      } else if (IsUnicodeString ((CHAR16*)PcdGetPtr (PcdDefaultBootArgument))) {
        // The command line is a Unicode string
        DefaultBootArgument = (CHAR16*)PcdGetPtr (PcdDefaultBootArgument);
        CmdLineSize = StrSize (DefaultBootArgument);

        // Initialize ASCII variables
        CmdLineAsciiSize = CmdLineSize / 2;
        AsciiDefaultBootArgument = AllocatePool (CmdLineAsciiSize);
        if (AsciiDefaultBootArgument == NULL) {
          return EFI_OUT_OF_RESOURCES;
        }
        UnicodeStrToAsciiStr ((CHAR16*)PcdGetPtr (PcdDefaultBootArgument), AsciiDefaultBootArgument);
      } else {
        // The command line is a ASCII string
        AsciiDefaultBootArgument = (CHAR8*)PcdGetPtr (PcdDefaultBootArgument);
        CmdLineAsciiSize = AsciiStrSize (AsciiDefaultBootArgument);

        // Initialize ASCII variables
        CmdLineSize = CmdLineAsciiSize * 2;
        DefaultBootArgument = AllocatePool (CmdLineSize);
        if (DefaultBootArgument == NULL) {
          return EFI_OUT_OF_RESOURCES;
        }
        AsciiStrToUnicodeStr (AsciiDefaultBootArgument, DefaultBootArgument);
      }

      if ((BootType == BDS_LOADER_KERNEL_LINUX_ATAG) || (BootType == BDS_LOADER_KERNEL_LINUX_FDT)) {
        InitrdPath = EfiDevicePathFromTextProtocol->ConvertTextToDevicePath ((CHAR16*)PcdGetPtr(PcdDefaultBootInitrdPath));
        InitrdSize = GetDevicePathSize (InitrdPath);

        OptionalDataSize = sizeof(ARM_BDS_LOADER_ARGUMENTS) + CmdLineAsciiSize + InitrdSize;
        BootArguments = (ARM_BDS_LOADER_ARGUMENTS*)AllocatePool (OptionalDataSize);
//.........这里部分代码省略.........

EFI_STATUS
GetBootDeviceTypeInfo (
  VOID
  )
{
    EFI_STATUS        Status = EFI_SUCCESS;
    LIST_ENTRY        BootOptionsList;
    LIST_ENTRY*       Entry;    
    UINT16            *SataDes = NULL;
    UINT16            *MacDes = NULL;
    UINTN             SataDesSize = 0;
    UINTN             MacDesSize = 0; 
    BDS_LOAD_OPTION*  BootOption;
    UINTN             OptionCount = 0;
    CHAR16*           SataStr = L"Sata";
    CHAR16*           MacStr = L"MAC";
    CHAR16*           DevicePathTxt = NULL;
    EFI_DEVICE_PATH_TO_TEXT_PROTOCOL* DevicePathToTextProtocol = NULL;    
    
    // Get Boot#### list
    BootOptionList (&BootOptionsList);
    // Display the Boot options
    for (Entry = GetFirstNode (&BootOptionsList);
     !IsNull (&BootOptionsList,Entry);
     Entry = GetNextNode (&BootOptionsList,Entry)
     )
    {
        BootOption = LOAD_OPTION_FROM_LINK(Entry);
        //Print(L"[%d] %s\n", OptionCount, BootOption->Description);
        //DEBUG_CODE_BEGIN();
        Status = gBS->LocateProtocol (&gEfiDevicePathToTextProtocolGuid, NULL, (VOID **)&DevicePathToTextProtocol);
        if (EFI_ERROR(Status)) {
            // You must provide an implementation of DevicePathToTextProtocol in your firmware (eg: DevicePathDxe)
            DEBUG((EFI_D_ERROR,"Error: Bds requires DevicePathToTextProtocol\n"));
            return Status;
        }
        DevicePathTxt = DevicePathToTextProtocol->ConvertDevicePathToText (BootOption->FilePathList, TRUE, TRUE);
         //Print(L"\t- %s\n",DevicePathTxt);
        //DEBUG_CODE_END();        
         //FIND SATA BOOT DEVICES       
        if(!(StringFind(DevicePathTxt, SataStr)))
        {                        
            if(SataDesSize != 0)
            {
                SataDes = ReallocatePool (SataDesSize, SataDesSize + sizeof(UINT16), SataDes);
                SataDes[SataDesSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;
                SataDesSize += sizeof(UINT16);
            }else{
                SataDesSize = sizeof(UINT16);
                SataDes = &(BootOption->LoadOptionIndex);
            }
           // Print(L"liuhuan SATA boot num: %d\n",SataDesSize / sizeof(UINT16));
        }        
        //FIND PXE BOOT DEVICES
        if(!(StringFind(DevicePathTxt, MacStr) ))            
        {                        
            if(MacDesSize != 0)
            {
                MacDes = ReallocatePool (MacDesSize, MacDesSize + sizeof(UINT16), MacDes);
                MacDes[MacDesSize / sizeof(UINT16)] = BootOption->LoadOptionIndex;
                MacDesSize += sizeof(UINT16);
            }else{
                MacDesSize = sizeof(UINT16);
                MacDes = &(BootOption->LoadOptionIndex);
            }
         //   Print(L"liuhuan PXE boot num: %d\n",MacDesSize / sizeof(UINT16));
        }
        //FreePool(DevicePathTxt);    
        OptionCount++;
    }
     
    OemGetSataBootNum(SataDesSize);
    OemGetPXEBootNum(MacDesSize);

    if(SataDes != NULL)
    {
        FreePool(SataDes);
    }
    if(MacDes != NULL)
    {
        FreePool(MacDes);
    }
    if(DevicePathTxt != NULL)
    {
        FreePool(DevicePathTxt);
    }
    return EFI_SUCCESS;
}