MdeModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdeModulePkg / Application / UiApp / FrontPageCustomizedUiSupport.c

/** @file\r
\r
  This library class defines a set of interfaces to customize Ui module\r
\r
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
#include <Uefi.h>\r
\r
#include <Guid/MdeModuleHii.h>\r
#include <Guid/GlobalVariable.h>\r
\r
#include <Protocol/HiiConfigAccess.h>\r
#include <Protocol/HiiString.h>\r
\r
#include <Library/HiiLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/UefiLib.h>\r
#include <Library/BaseMemoryLib.h>\r
#include <Library/PcdLib.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiRuntimeServicesTableLib.h>\r
#include <Library/UefiHiiServicesLib.h>\r
#include <Library/DevicePathLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
#include "FrontPageCustomizedUiSupport.h"\r
\r
//\r
// This is the VFR compiler generated header file which defines the\r
// string identifiers.\r
//\r
#define PRINTABLE_LANGUAGE_NAME_STRING_ID     0x0001\r
\r
#define UI_HII_DRIVER_LIST_SIZE               0x8\r
\r
#define FRONT_PAGE_KEY_CONTINUE               0x1000\r
#define FRONT_PAGE_KEY_RESET                  0x1001\r
#define FRONT_PAGE_KEY_LANGUAGE               0x1002\r
#define FRONT_PAGE_KEY_DRIVER                 0x2000\r
\r
typedef struct {\r
  EFI_STRING_ID   PromptId;\r
  EFI_STRING_ID   HelpId;\r
  EFI_STRING_ID   DevicePathId;\r
  EFI_GUID        FormSetGuid;\r
  BOOLEAN         EmptyLineAfter;\r
} UI_HII_DRIVER_INSTANCE;\r
\r
CHAR8                        *gLanguageString;\r
EFI_STRING_ID                *gLanguageToken;\r
UI_HII_DRIVER_INSTANCE       *gHiiDriverList;\r
extern EFI_HII_HANDLE        gStringPackHandle;\r
UINT8                        gCurrentLanguageIndex;\r
\r
\r
/**\r
  Get next language from language code list (with separator ';').\r
\r
  If LangCode is NULL, then ASSERT.\r
  If Lang is NULL, then ASSERT.\r
\r
  @param  LangCode    On input: point to first language in the list. On\r
                                 output: point to next language in the list, or\r
                                 NULL if no more language in the list.\r
  @param  Lang           The first language in the list.\r
\r
**/\r
VOID\r
GetNextLanguage (\r
  IN OUT CHAR8      **LangCode,\r
  OUT CHAR8         *Lang\r
  )\r
{\r
  UINTN  Index;\r
  CHAR8  *StringPtr;\r
\r
  ASSERT (LangCode != NULL);\r
  ASSERT (*LangCode != NULL);\r
  ASSERT (Lang != NULL);\r
\r
  Index = 0;\r
  StringPtr = *LangCode;\r
  while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {\r
    Index++;\r
  }\r
\r
  CopyMem (Lang, StringPtr, Index);\r
  Lang[Index] = 0;\r
\r
  if (StringPtr[Index] == ';') {\r
    Index++;\r
  }\r
  *LangCode = StringPtr + Index;\r
}\r
\r
/**\r
  This function processes the language changes in configuration.\r
\r
  @param Value           A pointer to the data being sent to the original exporting driver.\r
\r
\r
  @retval  TRUE          The callback successfully handled the action.\r
  @retval  FALSE         The callback not supported in this handler.\r
\r
**/\r
EFI_STATUS\r
LanguageChangeHandler (\r
  IN  EFI_IFR_TYPE_VALUE                     *Value\r
  )\r
{\r
  CHAR8                         *LangCode;\r
  CHAR8                         *Lang;\r
  UINTN                         Index;\r
  EFI_STATUS                    Status;\r
\r
  //\r
  // Allocate working buffer for RFC 4646 language in supported LanguageString.\r
  //\r
  Lang = AllocatePool (AsciiStrSize (gLanguageString));\r
  ASSERT (Lang != NULL);\r
\r
  Index = 0;\r
  LangCode = gLanguageString;\r
  while (*LangCode != 0) {\r
    GetNextLanguage (&LangCode, Lang);\r
\r
    if (Index == Value->u8) {\r
      gCurrentLanguageIndex = Value->u8;\r
      break;\r
    }\r
\r
    Index++;\r
  }\r
\r
  if (Index == Value->u8) {\r
    Status = gRT->SetVariable (\r
                    L"PlatformLang",\r
                    &gEfiGlobalVariableGuid,\r
                    EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
                    AsciiStrSize (Lang),\r
                    Lang\r
                    );\r
    if (EFI_ERROR (Status)) {\r
      FreePool (Lang);\r
      return EFI_DEVICE_ERROR;\r
    }\r
  } else {\r
    ASSERT (FALSE);\r
  }\r
  FreePool (Lang);\r
\r
  return EFI_SUCCESS;\r
}\r
\r
/**\r
  This function processes the results of changes in configuration.\r
\r
\r
  @param HiiHandle       Points to the hii handle for this formset.\r
  @param Action          Specifies the type of action taken by the browser.\r
  @param QuestionId      A unique value which is sent to the original exporting driver\r
                         so that it can identify the type of data to expect.\r
  @param Type            The type of value for the question.\r
  @param Value           A pointer to the data being sent to the original exporting driver.\r
  @param ActionRequest   On return, points to the action requested by the callback function.\r
  @param Status          Return the handle status.\r
\r
  @retval  TRUE          The callback successfully handled the action.\r
  @retval  FALSE         The callback not supported in this handler.\r
\r
**/\r
BOOLEAN\r
UiSupportLibCallbackHandler (\r
  IN  EFI_HII_HANDLE                         HiiHandle,\r
  IN  EFI_BROWSER_ACTION                     Action,\r
  IN  EFI_QUESTION_ID                        QuestionId,\r
  IN  UINT8                                  Type,\r
  IN  EFI_IFR_TYPE_VALUE                     *Value,\r
  OUT EFI_BROWSER_ACTION_REQUEST             *ActionRequest,\r
  OUT EFI_STATUS                             *Status\r
  )\r
{\r
  if (QuestionId != FRONT_PAGE_KEY_CONTINUE &&\r
      QuestionId != FRONT_PAGE_KEY_RESET &&\r
      QuestionId != FRONT_PAGE_KEY_LANGUAGE) {\r
    return FALSE;\r
  }\r
\r
  if (Action == EFI_BROWSER_ACTION_RETRIEVE) {\r
    if (QuestionId == FRONT_PAGE_KEY_LANGUAGE) {\r
      Value->u8 = gCurrentLanguageIndex;\r
      *Status = EFI_SUCCESS;\r
    } else {\r
      *Status = EFI_UNSUPPORTED;\r
    }\r
    return TRUE;\r
  }\r
\r
  if (Action != EFI_BROWSER_ACTION_CHANGED) {\r
    //\r
    // Do nothing for other UEFI Action. Only do call back when data is changed.\r
    //\r
    *Status = EFI_UNSUPPORTED;\r
    return TRUE;\r
  }\r
\r
  if (Action == EFI_BROWSER_ACTION_CHANGED) {\r
    if ((Value == NULL) || (ActionRequest == NULL)) {\r
      *Status = EFI_INVALID_PARAMETER;\r
      return TRUE;\r
    }\r
\r
    *Status = EFI_SUCCESS;\r
    switch (QuestionId) {\r
    case FRONT_PAGE_KEY_CONTINUE:\r
      //\r
      // This is the continue - clear the screen and return an error to get out of FrontPage loop\r
      //\r
      *ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;\r
      break;\r
\r
    case FRONT_PAGE_KEY_LANGUAGE:\r
      *Status = LanguageChangeHandler(Value);\r
      break;\r
\r
    case FRONT_PAGE_KEY_RESET:\r
      //\r
      // Reset\r
      //\r
      gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);\r
      *Status = EFI_UNSUPPORTED;\r
\r
    default:\r
      break;\r
    }\r
  }\r
\r
  return TRUE;\r
}\r
\r
/**\r
  Create Select language menu in the front page with oneof opcode.\r
\r
  @param[in]    HiiHandle           The hii handle for the Uiapp driver.\r
  @param[in]    StartOpCodeHandle   The opcode handle to save the new opcode.\r
\r
**/\r
VOID\r
UiCreateLanguageMenu (\r
  IN EFI_HII_HANDLE              HiiHandle,\r
  IN VOID                        *StartOpCodeHandle\r
  )\r
{\r
  CHAR8                       *LangCode;\r
  CHAR8                       *Lang;\r
  UINTN                       LangSize;\r
  CHAR8                       *CurrentLang;\r
  UINTN                       OptionCount;\r
  CHAR16                      *StringBuffer;\r
  VOID                        *OptionsOpCodeHandle;\r
  UINTN                       StringSize;\r
  EFI_STATUS                  Status;\r
  EFI_HII_STRING_PROTOCOL     *HiiString;\r
\r
  Lang         = NULL;\r
  StringBuffer = NULL;\r
\r
  //\r
  // Init OpCode Handle and Allocate space for creation of UpdateData Buffer\r
  //\r
  OptionsOpCodeHandle = HiiAllocateOpCodeHandle ();\r
  ASSERT (OptionsOpCodeHandle != NULL);\r
\r
  GetEfiGlobalVariable2 (L"PlatformLang", (VOID**)&CurrentLang, NULL);\r
\r
  //\r
  // Get Support language list from variable.\r
  //\r
  GetEfiGlobalVariable2 (L"PlatformLangCodes", (VOID**)&gLanguageString, NULL);\r
  if (gLanguageString == NULL) {\r
    gLanguageString = AllocateCopyPool (\r
                               AsciiStrSize ((CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLangCodes)),\r
                               (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLangCodes)\r
                               );\r
    ASSERT (gLanguageString != NULL);\r
  }\r
\r
  if (gLanguageToken == NULL) {\r
    //\r
    // Count the language list number.\r
    //\r
    LangCode = gLanguageString;\r
    Lang = AllocatePool (AsciiStrSize (gLanguageString));\r
    ASSERT (Lang != NULL);\r
\r
    OptionCount = 0;\r
    while (*LangCode != 0) {\r
      GetNextLanguage (&LangCode, Lang);\r
      OptionCount ++;\r
    }\r
\r
    //\r
    // Allocate extra 1 as the end tag.\r
    //\r
    gLanguageToken = AllocateZeroPool ((OptionCount + 1) * sizeof (EFI_STRING_ID));\r
    ASSERT (gLanguageToken != NULL);\r
\r
    Status = gBS->LocateProtocol (&gEfiHiiStringProtocolGuid, NULL, (VOID **) &HiiString);\r
    ASSERT_EFI_ERROR (Status);\r
\r
    LangCode     = gLanguageString;\r
    OptionCount  = 0;\r
    while (*LangCode != 0) {\r
      GetNextLanguage (&LangCode, Lang);\r
\r
      StringSize = 0;\r
      Status = HiiString->GetString (HiiString, Lang, HiiHandle, PRINTABLE_LANGUAGE_NAME_STRING_ID, StringBuffer, &StringSize, NULL);\r
      if (Status == EFI_BUFFER_TOO_SMALL) {\r
        StringBuffer = AllocateZeroPool (StringSize);\r
        ASSERT (StringBuffer != NULL);\r
        Status = HiiString->GetString (HiiString, Lang, HiiHandle, PRINTABLE_LANGUAGE_NAME_STRING_ID, StringBuffer, &StringSize, NULL);\r
        ASSERT_EFI_ERROR (Status);\r
      }\r
\r
      if (EFI_ERROR (Status)) {\r
        LangSize = AsciiStrSize (Lang);\r
        StringBuffer = AllocatePool (LangSize * sizeof (CHAR16));\r
        ASSERT (StringBuffer != NULL);\r
        AsciiStrToUnicodeStrS (Lang, StringBuffer, LangSize);\r
      }\r
\r
      ASSERT (StringBuffer != NULL);\r
      gLanguageToken[OptionCount] = HiiSetString (HiiHandle, 0, StringBuffer, NULL);\r
      FreePool (StringBuffer);\r
\r
      OptionCount++;\r
    }\r
  }\r
\r
  ASSERT (gLanguageToken != NULL);\r
  LangCode = gLanguageString;\r
  OptionCount = 0;\r
  if (Lang == NULL) {\r
    Lang = AllocatePool (AsciiStrSize (gLanguageString));\r
    ASSERT (Lang != NULL);\r
  }\r
  while (*LangCode != 0) {\r
    GetNextLanguage (&LangCode, Lang);\r
\r
    if (CurrentLang != NULL && AsciiStrCmp (Lang, CurrentLang) == 0) {\r
      HiiCreateOneOfOptionOpCode (\r
        OptionsOpCodeHandle,\r
        gLanguageToken[OptionCount],\r
        EFI_IFR_OPTION_DEFAULT,\r
        EFI_IFR_NUMERIC_SIZE_1,\r
        (UINT8) OptionCount\r
        );\r
      gCurrentLanguageIndex = (UINT8) OptionCount;\r
    } else {\r
      HiiCreateOneOfOptionOpCode (\r
        OptionsOpCodeHandle,\r
        gLanguageToken[OptionCount],\r
        0,\r
        EFI_IFR_NUMERIC_SIZE_1,\r
        (UINT8) OptionCount\r
        );\r
    }\r
\r
    OptionCount++;\r
  }\r
\r
  if (CurrentLang != NULL) {\r
    FreePool (CurrentLang);\r
  }\r
  FreePool (Lang);\r
\r
  HiiCreateOneOfOpCode (\r
    StartOpCodeHandle,\r
    FRONT_PAGE_KEY_LANGUAGE,\r
    0,\r
    0,\r
    STRING_TOKEN (STR_LANGUAGE_SELECT),\r
    STRING_TOKEN (STR_LANGUAGE_SELECT_HELP),\r
    EFI_IFR_FLAG_CALLBACK,\r
    EFI_IFR_NUMERIC_SIZE_1,\r
    OptionsOpCodeHandle,\r
    NULL\r
    );\r
}\r
\r
/**\r
  Create continue menu in the front page.\r
\r
  @param[in]    HiiHandle           The hii handle for the Uiapp driver.\r
  @param[in]    StartOpCodeHandle   The opcode handle to save the new opcode.\r
\r
**/\r
VOID\r
UiCreateContinueMenu (\r
  IN EFI_HII_HANDLE              HiiHandle,\r
  IN VOID                        *StartOpCodeHandle\r
  )\r
{\r
  HiiCreateActionOpCode (\r
    StartOpCodeHandle,\r
    FRONT_PAGE_KEY_CONTINUE,\r
    STRING_TOKEN (STR_CONTINUE_PROMPT),\r
    STRING_TOKEN (STR_CONTINUE_PROMPT),\r
    EFI_IFR_FLAG_CALLBACK,\r
    0\r
    );\r
}\r
\r
/**\r
  Create empty line menu in the front page.\r
\r
  @param    HiiHandle           The hii handle for the Uiapp driver.\r
  @param    StartOpCodeHandle   The opcode handle to save the new opcode.\r
\r
**/\r
VOID\r
UiCreateEmptyLine (\r
  IN EFI_HII_HANDLE              HiiHandle,\r
  IN VOID                        *StartOpCodeHandle\r
  )\r
{\r
  HiiCreateSubTitleOpCode (StartOpCodeHandle, STRING_TOKEN (STR_NULL_STRING), 0, 0, 0);\r
}\r
\r
/**\r
  Create Reset menu in the front page.\r
\r
  @param[in]    HiiHandle           The hii handle for the Uiapp driver.\r
  @param[in]    StartOpCodeHandle   The opcode handle to save the new opcode.\r
\r
**/\r
VOID\r
UiCreateResetMenu (\r
  IN EFI_HII_HANDLE              HiiHandle,\r
  IN VOID                        *StartOpCodeHandle\r
  )\r
{\r
  HiiCreateActionOpCode (\r
    StartOpCodeHandle,\r
    FRONT_PAGE_KEY_RESET,\r
    STRING_TOKEN (STR_RESET_STRING),\r
    STRING_TOKEN (STR_RESET_STRING),\r
    EFI_IFR_FLAG_CALLBACK,\r
    0\r
    );\r
}\r
\r
/**\r
  Extract device path for given HII handle and class guid.\r
\r
  @param Handle          The HII handle.\r
\r
  @retval  NULL          Fail to get the device path string.\r
  @return  PathString    Get the device path string.\r
\r
**/\r
CHAR16 *\r
ExtractDevicePathFromHiiHandle (\r
  IN      EFI_HII_HANDLE      Handle\r
  )\r
{\r
  EFI_STATUS                       Status;\r
  EFI_HANDLE                       DriverHandle;\r
\r
  ASSERT (Handle != NULL);\r
\r
  if (Handle == NULL) {\r
    return NULL;\r
  }\r
\r
  Status = gHiiDatabase->GetPackageListHandle (gHiiDatabase, Handle, &DriverHandle);\r
  if (EFI_ERROR (Status)) {\r
    return NULL;\r
  }\r
\r
  return ConvertDevicePathToText(DevicePathFromHandle (DriverHandle), FALSE, FALSE);\r
}\r
\r
/**\r
  Check whether this driver need to be shown in the front page.\r
\r
  @param    HiiHandle           The hii handle for the driver.\r
  @param    Guid                The special guid for the driver which is the target.\r
  @param    PromptId            Return the prompt string id.\r
  @param    HelpId              Return the help string id.\r
  @param    FormsetGuid         Return the formset guid info.\r
\r
  @retval   EFI_SUCCESS         Search the driver success\r
\r
**/\r
BOOLEAN\r
RequiredDriver (\r
  IN  EFI_HII_HANDLE              HiiHandle,\r
  IN  EFI_GUID                    *Guid,\r
  OUT EFI_STRING_ID               *PromptId,\r
  OUT EFI_STRING_ID               *HelpId,\r
  OUT VOID                        *FormsetGuid\r
  )\r
{\r
  EFI_STATUS                  Status;\r
  UINT8                       ClassGuidNum;\r
  EFI_GUID                    *ClassGuid;\r
  EFI_IFR_FORM_SET            *Buffer;\r
  UINTN                       BufferSize;\r
  UINT8                       *Ptr;\r
  UINTN                       TempSize;\r
  BOOLEAN                     RetVal;\r
\r
  Status = HiiGetFormSetFromHiiHandle(HiiHandle, &Buffer,&BufferSize);\r
  if (EFI_ERROR (Status)) {\r
    return FALSE;\r
  }\r
\r
  RetVal = FALSE;\r
  TempSize = 0;\r
  Ptr = (UINT8 *) Buffer;\r
  while(TempSize < BufferSize)  {\r
    TempSize += ((EFI_IFR_OP_HEADER *) Ptr)->Length;\r
\r
    if (((EFI_IFR_OP_HEADER *) Ptr)->Length <= OFFSET_OF (EFI_IFR_FORM_SET, Flags)){\r
      Ptr += ((EFI_IFR_OP_HEADER *) Ptr)->Length;\r
      continue;\r
    }\r
\r
    ClassGuidNum = (UINT8) (((EFI_IFR_FORM_SET *)Ptr)->Flags & 0x3);\r
    ClassGuid = (EFI_GUID *) (VOID *)(Ptr + sizeof (EFI_IFR_FORM_SET));\r
    while (ClassGuidNum-- > 0) {\r
      if (!CompareGuid (Guid, ClassGuid)){\r
        ClassGuid ++;\r
        continue;\r
      }\r
\r
      *PromptId = ((EFI_IFR_FORM_SET *)Ptr)->FormSetTitle;\r
      *HelpId = ((EFI_IFR_FORM_SET *)Ptr)->Help;\r
      CopyMem (FormsetGuid, &((EFI_IFR_FORM_SET *) Ptr)->Guid, sizeof (EFI_GUID));\r
      RetVal = TRUE;\r
    }\r
  }\r
\r
  FreePool (Buffer);\r
\r
  return RetVal;\r
}\r
\r
/**\r
  Search the drivers in the system which need to show in the front page\r
  and insert the menu to the front page.\r
\r
  @param    HiiHandle           The hii handle for the Uiapp driver.\r
  @param    ClassGuid           The class guid for the driver which is the target.\r
  @param    SpecialHandlerFn    The pointer to the specail handler function, if any.\r
  @param    StartOpCodeHandle   The opcode handle to save the new opcode.\r
\r
  @retval   EFI_SUCCESS         Search the driver success\r
\r
**/\r
EFI_STATUS\r
UiListThirdPartyDrivers (\r
  IN EFI_HII_HANDLE              HiiHandle,\r
  IN EFI_GUID                    *ClassGuid,\r
  IN DRIVER_SPECIAL_HANDLER      SpecialHandlerFn,\r
  IN VOID                        *StartOpCodeHandle\r
  )\r
{\r
  UINTN                       Index;\r
  EFI_STRING                  String;\r
  EFI_STRING_ID               Token;\r
  EFI_STRING_ID               TokenHelp;\r
  EFI_HII_HANDLE              *HiiHandles;\r
  CHAR16                      *DevicePathStr;\r
  UINTN                       Count;\r
  UINTN                       CurrentSize;\r
  UI_HII_DRIVER_INSTANCE      *DriverListPtr;\r
  EFI_STRING                  NewName;\r
  BOOLEAN                     EmptyLineAfter;\r
\r
  if (gHiiDriverList != NULL) {\r
    FreePool (gHiiDriverList);\r
  }\r
\r
  HiiHandles = HiiGetHiiHandles (NULL);\r
  ASSERT (HiiHandles != NULL);\r
\r
  gHiiDriverList = AllocateZeroPool (UI_HII_DRIVER_LIST_SIZE * sizeof (UI_HII_DRIVER_INSTANCE));\r
  ASSERT (gHiiDriverList != NULL);\r
  DriverListPtr = gHiiDriverList;\r
  CurrentSize = UI_HII_DRIVER_LIST_SIZE;\r
\r
  for (Index = 0, Count = 0; HiiHandles[Index] != NULL; Index++) {\r
    if (!RequiredDriver (HiiHandles[Index], ClassGuid, &Token, &TokenHelp, &gHiiDriverList[Count].FormSetGuid)) {\r
      continue;\r
    }\r
\r
    String = HiiGetString (HiiHandles[Index], Token, NULL);\r
    if (String == NULL) {\r
      String = HiiGetString (gStringPackHandle, STRING_TOKEN (STR_MISSING_STRING), NULL);\r
      ASSERT (String != NULL);\r
    } else if (SpecialHandlerFn != NULL) {\r
      //\r
      // Check whether need to rename the driver name.\r
      //\r
      EmptyLineAfter = FALSE;\r
      if (SpecialHandlerFn (String, &NewName, &EmptyLineAfter)) {\r
        FreePool (String);\r
        String = NewName;\r
        DriverListPtr[Count].EmptyLineAfter = EmptyLineAfter;\r
      }\r
    }\r
    DriverListPtr[Count].PromptId = HiiSetString (HiiHandle, 0, String, NULL);\r
    FreePool (String);\r
\r
    String = HiiGetString (HiiHandles[Index], TokenHelp, NULL);\r
    if (String == NULL) {\r
      String = HiiGetString (gStringPackHandle, STRING_TOKEN (STR_MISSING_STRING), NULL);\r
      ASSERT (String != NULL);\r
    }\r
    DriverListPtr[Count].HelpId = HiiSetString (HiiHandle, 0, String, NULL);\r
    FreePool (String);\r
\r
    DevicePathStr = ExtractDevicePathFromHiiHandle(HiiHandles[Index]);\r
    if (DevicePathStr != NULL){\r
      DriverListPtr[Count].DevicePathId = HiiSetString (HiiHandle, 0, DevicePathStr, NULL);\r
      FreePool (DevicePathStr);\r
    } else {\r
      DriverListPtr[Count].DevicePathId = 0;\r
    }\r
\r
    Count++;\r
    if (Count >= CurrentSize) {\r
      DriverListPtr = ReallocatePool (\r
                        CurrentSize * sizeof (UI_HII_DRIVER_INSTANCE),\r
                        (Count + UI_HII_DRIVER_LIST_SIZE)\r
                          * sizeof (UI_HII_DRIVER_INSTANCE),\r
                        gHiiDriverList\r
                        );\r
      ASSERT (DriverListPtr != NULL);\r
      gHiiDriverList = DriverListPtr;\r
      CurrentSize += UI_HII_DRIVER_LIST_SIZE;\r
    }\r
  }\r
\r
  FreePool (HiiHandles);\r
\r
  Index = 0;\r
  while (gHiiDriverList[Index].PromptId != 0) {\r
    HiiCreateGotoExOpCode (\r
      StartOpCodeHandle,\r
      0,\r
      gHiiDriverList[Index].PromptId,\r
      gHiiDriverList[Index].HelpId,\r
      0,\r
      (EFI_QUESTION_ID) (Index + FRONT_PAGE_KEY_DRIVER),\r
      0,\r
      &gHiiDriverList[Index].FormSetGuid,\r
      gHiiDriverList[Index].DevicePathId\r
    );\r
\r
    if (gHiiDriverList[Index].EmptyLineAfter) {\r
      UiCreateEmptyLine (HiiHandle, StartOpCodeHandle);\r
    }\r
\r
    Index ++;\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r