MdeModulePkg FileExplorerLib: Change file format which has mixed file format.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19297 6f19259b-4bc3-4df7-8a09-765794883524

5 files changed, 1863 insertions, 1863 deletions

diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
index 65e4785921..c64a94bebe 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
+++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.c
@@ -1,1507 +1,1507 @@
-/** @file
-File explorer related functions.
-
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials are licensed and made available under
-the terms and conditions of the BSD License that accompanies this distribution.
-The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php.
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-
-#include "FileExplorer.h"
-
-EFI_GUID FileExplorerGuid       = EFI_FILE_EXPLORE_FORMSET_GUID;
-
-///
-/// File system selection menu
-///
-MENU_OPTION      mFsOptionMenu = {
-  MENU_OPTION_SIGNATURE,
-  {NULL},
-  0,
-  FALSE
-};
-
-FILE_EXPLORER_CALLBACK_DATA  gFileExplorerPrivate = {
-  FILE_EXPLORER_CALLBACK_DATA_SIGNATURE,
-  NULL,
-  NULL,
-  {
-    LibExtractConfig,
-    LibRouteConfig,
-    LibCallback
-  },
-  NULL,
-  &mFsOptionMenu,
-  0
-};
-
-HII_VENDOR_DEVICE_PATH  *gHiiVendorDevicePath;
-
-HII_VENDOR_DEVICE_PATH  FeHiiVendorDevicePath = {
-  {
-    {
-      HARDWARE_DEVICE_PATH,
-      HW_VENDOR_DP,
-      {
-        (UINT8) (sizeof (VENDOR_DEVICE_PATH)),
-        (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)
-      }
-    },
-    //
-    // Will be replace with gEfiCallerIdGuid in code.
-    //
-    { 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }
-  },
-  {
-    END_DEVICE_PATH_TYPE,
-    END_ENTIRE_DEVICE_PATH_SUBTYPE,
-    { 
-      (UINT8) (END_DEVICE_PATH_LENGTH),
-      (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)
-    }
-  }
-};
-
-VOID                *mLibStartOpCodeHandle = NULL;
-VOID                *mLibEndOpCodeHandle = NULL;
-EFI_IFR_GUID_LABEL  *mLibStartLabel = NULL;
-EFI_IFR_GUID_LABEL  *mLibEndLabel = NULL;
-
-/**
-  This function allows a caller to extract the current configuration for one
-  or more named elements from the target driver.
-
-
-  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Request         A null-terminated Unicode string in <ConfigRequest> format.
-  @param Progress        On return, points to a character in the Request string.
-                         Points to the string's null terminator if request was successful.
-                         Points to the most recent '&' before the first failing name/value
-                         pair (or the beginning of the string if the failure is in the
-                         first name/value pair) if the request was not successful.
-  @param Results         A null-terminated Unicode string in <ConfigAltResp> format which
-                         has all values filled in for the names in the Request string.
-                         String to be allocated by the called function.
-
-  @retval  EFI_INVALID_PARAMETER  Request is illegal syntax, or unknown name.
-  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.
-
-**/
-EFI_STATUS
-EFIAPI
-LibExtractConfig (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  CONST EFI_STRING                       Request,
-  OUT EFI_STRING                             *Progress,
-  OUT EFI_STRING                             *Results
-  )
-{
-  if (Progress == NULL || Results == NULL) {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  *Progress = Request;
-  return EFI_NOT_FOUND;
-}
-
-/**
-  This function processes the results of changes in configuration.
-
-
-  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Configuration   A null-terminated Unicode string in <ConfigResp> format.
-  @param Progress        A pointer to a string filled in with the offset of the most
-                         recent '&' before the first failing name/value pair (or the
-                         beginning of the string if the failure is in the first
-                         name/value pair) or the terminating NULL if all was successful.
-
-  @retval  EFI_INVALID_PARAMETER  Configuration is NULL.
-  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.
-
-**/
-EFI_STATUS
-EFIAPI
-LibRouteConfig (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  CONST EFI_STRING                       Configuration,
-  OUT EFI_STRING                             *Progress
-  )
-{
-  if (Configuration == NULL || Progress == NULL) {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  *Progress = Configuration;
-  return EFI_NOT_FOUND;
-}
-
-/**
-  This function processes the results of changes in configuration.
-  When user select a interactive opcode, this callback will be triggered.
-  Based on the Question(QuestionId) that triggers the callback, the corresponding
-  actions is performed. It handles:
-
-  1) Process the axtra action or exit file explorer when user select one file .
-  2) update of file content if a dir is selected.
-
-  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Action          Specifies the type of action taken by the browser.
-  @param QuestionId      A unique value which is sent to the original exporting driver
-                         so that it can identify the type of data to expect.
-  @param Type            The type of value for the question.
-  @param Value           A pointer to the data being sent to the original exporting driver.
-  @param ActionRequest   On return, points to the action requested by the callback function.
-
-  @retval  EFI_SUCCESS           The callback successfully handled the action.
-  @retval  other error           Error occur when parse one directory.
-**/
-EFI_STATUS
-EFIAPI
-LibCallback (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  EFI_BROWSER_ACTION                     Action,
-  IN  EFI_QUESTION_ID                        QuestionId,
-  IN  UINT8                                  Type,
-  IN  EFI_IFR_TYPE_VALUE                     *Value,
-  OUT EFI_BROWSER_ACTION_REQUEST             *ActionRequest
-  )
-{
-  EFI_STATUS    Status;
-  BOOLEAN       NeedExit;
-
-  NeedExit = TRUE;
-  
-  if (Action != EFI_BROWSER_ACTION_CHANGING && Action != EFI_BROWSER_ACTION_CHANGED) {
-    //
-    // Do nothing for other UEFI Action. Only do call back when data is changed.
-    //
-    return EFI_UNSUPPORTED;
-  }
-
-  *ActionRequest = EFI_BROWSER_ACTION_REQUEST_NONE;
-
-  if (Action == EFI_BROWSER_ACTION_CHANGED) {
-    if ((Value == NULL) || (ActionRequest == NULL)) {
-      return EFI_INVALID_PARAMETER;
-    }
-    
-    if (QuestionId >= FILE_OPTION_OFFSET) {
-      LibGetDevicePath(QuestionId);
-
-      //
-      // Process the extra action.
-      //
-      if (gFileExplorerPrivate.ChooseHandler != NULL) {
-        NeedExit = gFileExplorerPrivate.ChooseHandler (gFileExplorerPrivate.RetDevicePath);
-      }
-
-      if (NeedExit) {
-        *ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;
-      }
-    }
-  } else if (Action == EFI_BROWSER_ACTION_CHANGING) {
-    if (Value == NULL) {
-      return EFI_INVALID_PARAMETER;
-    }
-    
-    if (QuestionId >= FILE_OPTION_OFFSET) {
-      Status = LibUpdateFileExplorer (QuestionId);
-      if (EFI_ERROR (Status)) {
-        return Status;
-      }
-    }
-  }
-
-  return EFI_SUCCESS;
-}
-
-/**
-  Create a menu entry by given menu type.
-
-  @retval NULL           If failed to create the menu.
-  @return the new menu entry.
-
-**/
-MENU_ENTRY *
-LibCreateMenuEntry (
-  VOID
-  )
-{
-  MENU_ENTRY *MenuEntry;
-
-  //
-  // Create new menu entry
-  //
-  MenuEntry = AllocateZeroPool (sizeof (MENU_ENTRY));
-  if (MenuEntry == NULL) {
-    return NULL;
-  }
-
-  MenuEntry->VariableContext = AllocateZeroPool (sizeof (FILE_CONTEXT));
-  if (MenuEntry->VariableContext == NULL) {
-    FreePool (MenuEntry);
-    return NULL;
-  }
-
-  MenuEntry->Signature        = MENU_ENTRY_SIGNATURE;
-  return MenuEntry;
-}
-
-
-/**
-  Get the Menu Entry from the list in Menu Entry List.
-
-  If MenuNumber is great or equal to the number of Menu
-  Entry in the list, then ASSERT.
-
-  @param MenuOption      The Menu Entry List to read the menu entry.
-  @param MenuNumber      The index of Menu Entry.
-
-  @return The Menu Entry.
-
-**/
-MENU_ENTRY *
-LibGetMenuEntry (
-  MENU_OPTION         *MenuOption,
-  UINTN               MenuNumber
-  )
-{
-  MENU_ENTRY      *NewMenuEntry;
-  UINTN           Index;
-  LIST_ENTRY      *List;
-
-  ASSERT (MenuNumber < MenuOption->MenuNumber);
-
-  List = MenuOption->Head.ForwardLink;
-  for (Index = 0; Index < MenuNumber; Index++) {
-    List = List->ForwardLink;
-  }
-
-  NewMenuEntry = CR (List, MENU_ENTRY, Link, MENU_ENTRY_SIGNATURE);
-
-  return NewMenuEntry;
-}
-
-/**
-  Free up all resource allocated for a BM_MENU_ENTRY.
-
-  @param MenuEntry   A pointer to BM_MENU_ENTRY.
-
-**/
-VOID
-LibDestroyMenuEntry (
-  MENU_ENTRY         *MenuEntry
-  )
-{
-  FILE_CONTEXT           *FileContext;
-
-  FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;
-
-  if (!FileContext->IsRoot) {
-    FreePool (FileContext->DevicePath);
-  } else {
-    if (FileContext->FileHandle != NULL) {
-      FileContext->FileHandle->Close (FileContext->FileHandle);
-    }
-  }
-
-  if (FileContext->FileName != NULL) {
-    FreePool (FileContext->FileName);
-  }
-
-  FreePool (FileContext);
-
-  FreePool (MenuEntry->DisplayString);
-  if (MenuEntry->HelpString != NULL) {
-    FreePool (MenuEntry->HelpString);
-  }
-
-  FreePool (MenuEntry);
-}
-
-
-/**
-  Free resources allocated in Allocate Rountine.
-
-  @param FreeMenu        Menu to be freed
-**/
-VOID
-LibFreeMenu (
-  MENU_OPTION        *FreeMenu
-  )
-{
-  MENU_ENTRY *MenuEntry;
-  while (!IsListEmpty (&FreeMenu->Head)) {
-    MenuEntry = CR (
-                  FreeMenu->Head.ForwardLink,
-                  MENU_ENTRY,
-                  Link,
-                  MENU_ENTRY_SIGNATURE
-                  );
-    RemoveEntryList (&MenuEntry->Link);
-    LibDestroyMenuEntry (MenuEntry);
-  }
-  FreeMenu->MenuNumber = 0;
-}
-
-/**
-
-  Function opens and returns a file handle to the root directory of a volume.
-
-  @param DeviceHandle    A handle for a device
-
-  @return A valid file handle or NULL is returned
-
-**/
-EFI_FILE_HANDLE
-LibOpenRoot (
-  IN EFI_HANDLE                   DeviceHandle
-  )
-{
-  EFI_STATUS                      Status;
-  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;
-  EFI_FILE_HANDLE                 File;
-
-  File = NULL;
-
-  //
-  // File the file system interface to the device
-  //
-  Status = gBS->HandleProtocol (
-                  DeviceHandle,
-                  &gEfiSimpleFileSystemProtocolGuid,
-                  (VOID *) &Volume
-                  );
-
-  //
-  // Open the root directory of the volume
-  //
-  if (!EFI_ERROR (Status)) {
-    Status = Volume->OpenVolume (
-                      Volume,
-                      &File
-                      );
-  }
-  //
-  // Done
-  //
-  return EFI_ERROR (Status) ? NULL : File;
-}
-
-/**
-  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 *
-LibDevicePathToStr (
-  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;
-}
-
-/**
-  Duplicate a string.
-
-  @param Src             The source.
-
-  @return A new string which is duplicated copy of the source.
-  @retval NULL If there is not enough memory.
-
-**/
-CHAR16 *
-LibStrDuplicate (
-  IN CHAR16   *Src
-  )
-{
-  CHAR16  *Dest;
-  UINTN   Size;
-
-  Size  = StrSize (Src);
-  Dest  = AllocateZeroPool (Size);
-  ASSERT (Dest != NULL);
-  if (Dest != NULL) {
-    CopyMem (Dest, Src, Size);
-  }
-
-  return Dest;
-}
-
-/**
-
-  Function gets the file information from an open file descriptor, and stores it
-  in a buffer allocated from pool.
-
-  @param FHand           File Handle.
-  @param InfoType        Info type need to get.
-
-  @retval                A pointer to a buffer with file information or NULL is returned
-
-**/
-VOID *
-LibFileInfo (
-  IN EFI_FILE_HANDLE      FHand,
-  IN EFI_GUID             *InfoType
-  )
-{
-  EFI_STATUS    Status;
-  EFI_FILE_INFO *Buffer;
-  UINTN         BufferSize;
-
-  Buffer      = NULL;
-  BufferSize  = 0;
-  
-  Status = FHand->GetInfo (
-                    FHand,
-                    InfoType,
-                    &BufferSize,
-                    Buffer
-                    );
-  if (Status == EFI_BUFFER_TOO_SMALL) {
-    Buffer = AllocatePool (BufferSize);
-    ASSERT (Buffer != NULL);
-  }
-
-  Status = FHand->GetInfo (
-                    FHand,
-                    InfoType,
-                    &BufferSize,
-                    Buffer
-                    );
-
-  return Buffer;
-}
-
-/**
-
-  Get file type base on the file name.
-  Just cut the file name, from the ".". eg ".efi"
-
-  @param FileName  File need to be checked.
-
-  @retval the file type string.
-
-**/
-CHAR16*
-LibGetTypeFromName (
-  IN CHAR16   *FileName
-  )
-{
-  UINTN    Index;
-
-  Index = StrLen (FileName) - 1;
-  while ((FileName[Index] != L'.') && (Index != 0)) {
-    Index--;
-  }
-
-  return Index == 0 ? NULL : &FileName[Index];
-}
-
-/**
-  Converts the unicode character of the string from uppercase to lowercase.
-  This is a internal function.
-
-  @param ConfigString  String to be converted
-
-**/
-VOID
-LibToLowerString (
-  IN CHAR16  *String
-  )
-{
-  CHAR16      *TmpStr;
-
-  for (TmpStr = String; *TmpStr != L'\0'; TmpStr++) {
-    if (*TmpStr >= L'A' && *TmpStr <= L'Z') {
-      *TmpStr = (CHAR16) (*TmpStr - L'A' + L'a');
-    }
-  }
-}
-
-/**
-
-  Check whether current FileName point to a valid
-  Efi Image File.
-
-  @param FileName  File need to be checked.
-
-  @retval TRUE  Is Efi Image
-  @retval FALSE Not a valid Efi Image
-
-**/
-BOOLEAN
-LibIsSupportedFileType (
-  IN UINT16  *FileName
-  )
-{
-  CHAR16     *InputFileType;
-  CHAR16     *TmpStr;
-  BOOLEAN    IsSupported;
-
-  if (gFileExplorerPrivate.FileType == NULL) {
-    return TRUE;
-  }
-
-  InputFileType = LibGetTypeFromName (FileName);
-  //
-  // If the file not has *.* style, always return TRUE.
-  //
-  if (InputFileType == NULL) {
-    return TRUE;
-  }
-
-  TmpStr = AllocateCopyPool (StrSize (InputFileType), InputFileType);
-  LibToLowerString(TmpStr);
-
-  IsSupported = (StrStr (gFileExplorerPrivate.FileType, TmpStr) == NULL ? FALSE : TRUE);
-
-  FreePool (TmpStr);
-  return IsSupported;
-}
-
-/**
-
-  Append file name to existing file name.
-
-  @param Str1  The existing file name
-  @param Str2  The file name to be appended
-
-  @return Allocate a new string to hold the appended result.
-          Caller is responsible to free the returned string.
-
-**/
-CHAR16 *
-LibAppendFileName (
-  IN  CHAR16  *Str1,
-  IN  CHAR16  *Str2
-  )
-{
-  UINTN   Size1;
-  UINTN   Size2;
-  UINTN   MaxLen;
-  CHAR16  *Str;
-  CHAR16  *TmpStr;
-  CHAR16  *Ptr;
-  CHAR16  *LastSlash;
-
-  Size1 = StrSize (Str1);
-  Size2 = StrSize (Str2);
-  MaxLen = (Size1 + Size2 + sizeof (CHAR16))/ sizeof (CHAR16);
-  Str   = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16));
-  ASSERT (Str != NULL);
-
-  TmpStr = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16)); 
-  ASSERT (TmpStr != NULL);
-
-  StrCpyS (Str, MaxLen, Str1);
-  if (!((*Str == '\\') && (*(Str + 1) == 0))) {
-    StrCatS (Str, MaxLen, L"\\");
-  }
-
-  StrCatS (Str, MaxLen, Str2);
-
-  Ptr       = Str;
-  LastSlash = Str;
-  while (*Ptr != 0) {
-    if (*Ptr == '\\' && *(Ptr + 1) == '.' && *(Ptr + 2) == '.' && *(Ptr + 3) == L'\\') {
-      //
-      // Convert "\Name\..\" to "\"
-      // DO NOT convert the .. if it is at the end of the string. This will
-      // break the .. behavior in changing directories.
-      //
-
-      //
-      // Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings 
-      // that overlap.
-      //
-      StrCpyS (TmpStr, MaxLen, Ptr + 3);
-      StrCpyS (LastSlash, MaxLen - (UINTN) (LastSlash - Str), TmpStr);
-      Ptr = LastSlash;
-    } else if (*Ptr == '\\' && *(Ptr + 1) == '.' && *(Ptr + 2) == '\\') {
-      //
-      // Convert a "\.\" to a "\"
-      //
-
-      //
-      // Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings 
-      // that overlap.
-      //
-      StrCpyS (TmpStr, MaxLen, Ptr + 2);
-      StrCpyS (Ptr, MaxLen - (UINTN) (Ptr - Str), TmpStr);
-      Ptr = LastSlash;
-    } else if (*Ptr == '\\') {
-      LastSlash = Ptr;
-    }
-
-    Ptr++;
-  }
-
-  FreePool (TmpStr);
-  
-  return Str;
-}
-
-/**
-  This function build the FsOptionMenu list which records all
-  available file system in the system. They includes all instances
-  of EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, all instances of EFI_LOAD_FILE_SYSTEM.
-
-
-  @retval  EFI_SUCCESS             Success find the file system
-  @retval  EFI_OUT_OF_RESOURCES    Can not create menu entry
-
-**/
-EFI_STATUS
-LibFindFileSystem (
-  VOID
-  )
-{
-  UINTN                        NoSimpleFsHandles;
-  UINTN                        NoLoadFileHandles;
-  EFI_HANDLE                   *SimpleFsHandle;
-  EFI_HANDLE                   *LoadFileHandle;
-  UINT16                       *VolumeLabel;
-  UINTN                        Index;
-  EFI_STATUS                   Status;
-  MENU_ENTRY                   *MenuEntry;
-  FILE_CONTEXT                 *FileContext;
-  UINTN                        OptionNumber;
-  EFI_FILE_SYSTEM_VOLUME_LABEL *Info;
-
-  NoSimpleFsHandles = 0;
-  NoLoadFileHandles = 0;
-  OptionNumber      = 0;
-
-  //
-  // Locate Handles that support Simple File System protocol
-  //
-  Status = gBS->LocateHandleBuffer (
-                  ByProtocol,
-                  &gEfiSimpleFileSystemProtocolGuid,
-                  NULL,
-                  &NoSimpleFsHandles,
-                  &SimpleFsHandle
-                  );
-  if (!EFI_ERROR (Status)) {
-    //
-    // Find all the instances of the File System prototocol
-    //
-    for (Index = 0; Index < NoSimpleFsHandles; Index++) {
-      //
-      // Allocate pool for this load option
-      //
-      MenuEntry = LibCreateMenuEntry ();
-      if (NULL == MenuEntry) {
-        FreePool (SimpleFsHandle);
-        return EFI_OUT_OF_RESOURCES;
-      }
-
-      FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;
-      FileContext->DeviceHandle = SimpleFsHandle[Index];
-      FileContext->FileHandle = LibOpenRoot (FileContext->DeviceHandle);
-      if (FileContext->FileHandle == NULL) {
-        LibDestroyMenuEntry (MenuEntry);
-        continue;
-      }
-
-      MenuEntry->HelpString = LibDevicePathToStr (DevicePathFromHandle (FileContext->DeviceHandle));
-      FileContext->FileName = LibStrDuplicate (L"\\");
-      FileContext->DevicePath = FileDevicePath (FileContext->DeviceHandle, FileContext->FileName);
-      FileContext->IsDir = TRUE;
-      FileContext->IsRoot = TRUE;
-
-      //
-      // Get current file system's Volume Label
-      //
-      Info = (EFI_FILE_SYSTEM_VOLUME_LABEL *) LibFileInfo (FileContext->FileHandle, &gEfiFileSystemVolumeLabelInfoIdGuid);
-      if (Info == NULL) {
-        VolumeLabel = L"NO FILE SYSTEM INFO";
-      } else {
-        if (Info->VolumeLabel == NULL) {
-          VolumeLabel = L"NULL VOLUME LABEL";
-        } else {
-          VolumeLabel = Info->VolumeLabel;
-          if (*VolumeLabel == 0x0000) {
-            VolumeLabel = L"NO VOLUME LABEL";
-          }
-        }
-      }
-      MenuEntry->DisplayString  = AllocateZeroPool (MAX_CHAR);
-      ASSERT (MenuEntry->DisplayString != NULL);
-      UnicodeSPrint (
-        MenuEntry->DisplayString,
-        MAX_CHAR,
-        L"%s, [%s]",
-        VolumeLabel,
-        MenuEntry->HelpString
-        );
-  	  MenuEntry->DisplayStringToken = HiiSetString (
-                                             gFileExplorerPrivate.FeHiiHandle,
-                                             0,
-                                             MenuEntry->DisplayString,
-                                             NULL
-                                             );
-      FreePool (Info);
-
-      OptionNumber++;
-      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &MenuEntry->Link);
-    }
-  }
-
-  if (NoSimpleFsHandles != 0) {
-    FreePool (SimpleFsHandle);
-  }
-
-  //
-  // Searching for handles that support Load File protocol
-  //
-  Status = gBS->LocateHandleBuffer (
-                  ByProtocol,
-                  &gEfiLoadFileProtocolGuid,
-                  NULL,
-                  &NoLoadFileHandles,
-                  &LoadFileHandle
-                  );
-
-  if (!EFI_ERROR (Status)) {
-    for (Index = 0; Index < NoLoadFileHandles; Index++) {
-      MenuEntry = LibCreateMenuEntry ();
-      if (NULL == MenuEntry) {
-        FreePool (LoadFileHandle);
-        return EFI_OUT_OF_RESOURCES;
-      }
-
-      FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;
-      FileContext->DeviceHandle = LoadFileHandle[Index];
-      FileContext->IsRoot = TRUE;
-
-      FileContext->DevicePath = DevicePathFromHandle (FileContext->DeviceHandle);
-      FileContext->FileName = LibDevicePathToStr (FileContext->DevicePath);
-
-      MenuEntry->HelpString = LibDevicePathToStr (FileContext->DevicePath);
-      MenuEntry->DisplayString = AllocateZeroPool (MAX_CHAR);
-      ASSERT (MenuEntry->DisplayString != NULL);
-      UnicodeSPrint (
-        MenuEntry->DisplayString,
-        MAX_CHAR,
-        L"Load File [%s]",
-        MenuEntry->HelpString
-        );
-      MenuEntry->DisplayStringToken = HiiSetString (
-                                           gFileExplorerPrivate.FeHiiHandle,
-                                           0,
-                                           MenuEntry->DisplayString,
-                                           NULL
-                                           );
-
-      OptionNumber++;
-      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &MenuEntry->Link);
-    }
-  }
-
-  if (NoLoadFileHandles != 0) {
-    FreePool (LoadFileHandle);
-  }
-
-  gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;
-
-  return EFI_SUCCESS;
-}
-
-/**
-  Find the file handle from the input menu info.
-  
-  @param  MenuEntry        Input Menu info.
-  @param  RetFileHandle    Return the file handle for the input device path.
-  
-  @retval EFI_SUCESS       Find the file handle success.
-  @retval Other            Find the file handle failure.
-**/
-EFI_STATUS
-LibGetFileHandleFromMenu (
-  IN  MENU_ENTRY                *MenuEntry,  
-  OUT EFI_FILE_HANDLE           *RetFileHandle
-  )
-{
-  EFI_FILE_HANDLE Dir;
-  EFI_FILE_HANDLE NewDir;
-  FILE_CONTEXT    *FileContext;
-  EFI_STATUS      Status;
-
-  FileContext   = (FILE_CONTEXT *) MenuEntry->VariableContext;
-  Dir           = FileContext->FileHandle;
-
-  //
-  // Open current directory to get files from it
-  //
-  Status = Dir->Open (
-                  Dir,
-                  &NewDir,
-                  FileContext->FileName,
-                  EFI_FILE_READ_ONLY,
-                  0
-                  );
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-
-  if (!FileContext->IsRoot) {
-    Dir->Close (Dir);
-  }
-
-  *RetFileHandle = NewDir;
-
-  return EFI_SUCCESS;
-}
-
-/**
-  Find the file handle from the input device path info.
-  
-  @param  RootDirectory    Device path info.
-  @param  RetFileHandle    Return the file handle for the input device path.
-  @param  ParentFileName   Parent file name.
-  @param  DeviceHandle     Driver handle for this partition.
-  
-  @retval EFI_SUCESS       Find the file handle success.
-  @retval Other            Find the file handle failure.
-**/
-EFI_STATUS
-LibGetFileHandleFromDevicePath (
-  IN  EFI_DEVICE_PATH_PROTOCOL  *RootDirectory,  
-  OUT EFI_FILE_HANDLE           *RetFileHandle,
-  OUT UINT16                    **ParentFileName,
-  OUT EFI_HANDLE                *DeviceHandle
-  )
-{
-  EFI_DEVICE_PATH_PROTOCOL          *DevicePathNode;
-  EFI_DEVICE_PATH_PROTOCOL          *TempDevicePathNode;
-  EFI_STATUS                        Status;
-  EFI_HANDLE                        Handle;
-  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL   *Volume;
-  EFI_FILE_HANDLE                   FileHandle;
-  EFI_FILE_HANDLE                   LastHandle;
-  CHAR16                            *TempPath;
-
-  *ParentFileName = NULL;
-
-  //
-  // Attempt to access the file via a file system interface
-  //
-  DevicePathNode = RootDirectory;
-  Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &DevicePathNode, &Handle);
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-  
-  Status = gBS->HandleProtocol (Handle, &gEfiSimpleFileSystemProtocolGuid, (VOID**)&Volume);
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-  
-  //
-  // Open the Volume to get the File System handle
-  //
-  Status = Volume->OpenVolume (Volume, &FileHandle);
-  if (EFI_ERROR (Status)) {
-    return Status;
-  }
-
-  *DeviceHandle = Handle;
-
-  if (IsDevicePathEnd(DevicePathNode)) {
-    *ParentFileName = AllocateCopyPool (StrSize (L"\\"), L"\\");
-    *RetFileHandle = FileHandle;
-    return EFI_SUCCESS;
-  }
-  
-  //
-  // Duplicate the device path to avoid the access to unaligned device path node.
-  // Because the device path consists of one or more FILE PATH MEDIA DEVICE PATH
-  // nodes, It assures the fields in device path nodes are 2 byte aligned.
-  //
-  TempDevicePathNode = DuplicateDevicePath (DevicePathNode);
-  if (TempDevicePathNode == NULL) {
-
-    //
-    // Setting Status to an EFI_ERROR value will cause the rest of
-    // the file system support below to be skipped.
-    //
-    Status = EFI_OUT_OF_RESOURCES;
-  }
-        
-  //
-  // Parse each MEDIA_FILEPATH_DP node. There may be more than one, since the
-  // directory information and filename can be seperate. The goal is to inch
-  // our way down each device path node and close the previous node
-  //
-  DevicePathNode = TempDevicePathNode;
-  while (!EFI_ERROR (Status) && !IsDevicePathEnd (DevicePathNode)) {
-    if (DevicePathType (DevicePathNode) != MEDIA_DEVICE_PATH ||
-        DevicePathSubType (DevicePathNode) != MEDIA_FILEPATH_DP) {
-      Status = EFI_UNSUPPORTED;
-      goto Done;
-    }
-
-    LastHandle = FileHandle;
-    FileHandle = NULL;
-
-    Status = LastHandle->Open (
-                          LastHandle,
-                          &FileHandle,
-                          ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName,
-                          EFI_FILE_MODE_READ,
-                          0
-                          );
-    if (*ParentFileName == NULL) {
-      *ParentFileName = AllocateCopyPool (StrSize (((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName), ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName);
-    } else {
-      TempPath = LibAppendFileName (*ParentFileName, ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName);
-      FreePool (*ParentFileName);
-      *ParentFileName = TempPath;
-    }
-
-    //
-    // Close the previous node
-    //
-    LastHandle->Close (LastHandle);
-
-    DevicePathNode = NextDevicePathNode (DevicePathNode);
-  }
-
-  if (EFI_ERROR (Status)) {
-    goto Done;
-  }
-
-  *RetFileHandle = FileHandle;
-
-  Status = EFI_SUCCESS;
-
-Done:
-  if (TempDevicePathNode != NULL) {
-    FreePool (TempDevicePathNode);
-  }
-
-  if ((FileHandle != NULL) && (EFI_ERROR (Status))) {
-    FileHandle->Close (FileHandle);
-  }
-
-  return Status;
-}
-
-/**
-  Find files under current directory.
-  
-  All files and sub-directories in current directory
-  will be stored in DirectoryMenu for future use.
-
-  @param FileHandle    Parent file handle. 
-  @param FileName      Parent file name.
-  @param DeviceHandle  Driver handle for this partition.
-
-  @retval EFI_SUCCESS         Get files from current dir successfully.
-  @return Other value if can't get files from current dir.
-
-**/
-EFI_STATUS
-LibFindFiles (
-  IN EFI_FILE_HANDLE           FileHandle,
-  IN UINT16                    *FileName,
-  IN EFI_HANDLE                DeviceHandle
-  )
-{
-  EFI_FILE_INFO   *DirInfo;
-  UINTN           BufferSize;
-  UINTN           DirBufferSize;
-  MENU_ENTRY      *NewMenuEntry;
-  FILE_CONTEXT    *NewFileContext;
-  UINTN           Pass;
-  EFI_STATUS      Status;
-  UINTN           OptionNumber;
-
-  OptionNumber = 0;
-
-  DirBufferSize = sizeof (EFI_FILE_INFO) + 1024;
-  DirInfo       = AllocateZeroPool (DirBufferSize);
-  if (DirInfo == NULL) {
-    return EFI_OUT_OF_RESOURCES;
-  }
-
-  //
-  // Get all files in current directory
-  // Pass 1 to get Directories
-  // Pass 2 to get files that are EFI images
-  //
-  for (Pass = 1; Pass <= 2; Pass++) {
-    FileHandle->SetPosition (FileHandle, 0);
-    for (;;) {
-      BufferSize  = DirBufferSize;
-      Status      = FileHandle->Read (FileHandle, &BufferSize, DirInfo);
-      if (EFI_ERROR (Status) || BufferSize == 0) {
-        break;
-      }
-
-      if (((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0 && Pass == 2) ||
-          ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == 0 && Pass == 1)
-          ) {
-        //
-        // Pass 1 is for Directories
-        // Pass 2 is for file names
-        //
-        continue;
-      }
-
-      if (!((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0 || LibIsSupportedFileType (DirInfo->FileName))) {
-        //
-        // Slip file unless it is a directory entry or a .EFI file
-        //
-        continue;
-      }
-
-      NewMenuEntry = LibCreateMenuEntry ();
-      if (NULL == NewMenuEntry) {
-        return EFI_OUT_OF_RESOURCES;
-      }
-
-      NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;
-      NewFileContext->DeviceHandle = DeviceHandle;
-      NewFileContext->FileName = LibAppendFileName (FileName, DirInfo->FileName);
-      NewFileContext->FileHandle = FileHandle;
-      NewFileContext->DevicePath = FileDevicePath (NewFileContext->DeviceHandle, NewFileContext->FileName);
-      NewMenuEntry->HelpString = NULL;
-      NewFileContext->IsDir = (BOOLEAN) ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY);
-
-      if (NewFileContext->IsDir) {
-        BufferSize = StrLen (DirInfo->FileName) * 2 + 6;
-        NewMenuEntry->DisplayString = AllocateZeroPool (BufferSize);
-        UnicodeSPrint (
-          NewMenuEntry->DisplayString,
-          BufferSize,
-          L"<%s>",
-          DirInfo->FileName
-          );
-      } else {
-        NewMenuEntry->DisplayString = LibStrDuplicate (DirInfo->FileName);
-      }
-      
-      NewMenuEntry->DisplayStringToken = HiiSetString (
-                                           gFileExplorerPrivate.FeHiiHandle,
-                                           0,
-                                           NewMenuEntry->DisplayString,
-                                           NULL
-                                           );
-
-      NewFileContext->IsRoot            = FALSE;
-
-      OptionNumber++;
-      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &NewMenuEntry->Link);
-    }
-  }
-
-  gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;
-
-  FreePool (DirInfo);
-
-  return EFI_SUCCESS;
-}
-
-/**
-  Refresh the global UpdateData structure.
-
-**/
-VOID
-LibRefreshUpdateData (
-  VOID
-  )
-{
-  //
-  // Free current updated date
-  //
-  if (mLibStartOpCodeHandle != NULL) {
-    HiiFreeOpCodeHandle (mLibStartOpCodeHandle);
-  }
-  if (mLibEndOpCodeHandle != NULL) {
-    HiiFreeOpCodeHandle (mLibEndOpCodeHandle);
-  }
-
-  //
-  // Create new OpCode Handle
-  //
-  mLibStartOpCodeHandle = HiiAllocateOpCodeHandle ();
-  mLibEndOpCodeHandle = HiiAllocateOpCodeHandle ();
-
-  //
-  // Create Hii Extend Label OpCode as the start opcode
-  //
-  mLibStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (
-                                         mLibStartOpCodeHandle,
-                                         &gEfiIfrTianoGuid,
-                                         NULL,
-                                         sizeof (EFI_IFR_GUID_LABEL)
-                                         );
-  mLibStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
-
-  mLibStartLabel->Number = FORM_FILE_EXPLORER_ID;
-
-  //
-  // Create Hii Extend Label OpCode as the start opcode
-  //
-  mLibEndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (
-                                         mLibEndOpCodeHandle,
-                                         &gEfiIfrTianoGuid,
-                                         NULL,
-                                         sizeof (EFI_IFR_GUID_LABEL)
-                                         );
-  mLibEndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;
-
-  mLibEndLabel->Number = LABEL_END;
-}
-
-/**
-
-  Update the File Explore page.
-
-**/
-VOID
-LibUpdateFileExplorePage (
-  VOID
-  )
-{
-  UINTN           Index;
-  MENU_ENTRY      *NewMenuEntry;
-  FILE_CONTEXT    *NewFileContext;
-  MENU_OPTION     *MenuOption;
-
-  NewMenuEntry    = NULL;
-  NewFileContext  = NULL;
-
-  LibRefreshUpdateData ();
-  MenuOption = gFileExplorerPrivate.FsOptionMenu;
-
-  for (Index = 0; Index < MenuOption->MenuNumber; Index++) {
-    NewMenuEntry    = LibGetMenuEntry (MenuOption, Index);
-    NewFileContext  = (FILE_CONTEXT *) NewMenuEntry->VariableContext;
-
-    if (!NewFileContext->IsDir) {
-      //
-      // Create Text opcode for directory, also create Text opcode for file in FileExplorerStateBootFromFile.
-      //
-      HiiCreateActionOpCode (
-        mLibStartOpCodeHandle,
-        (UINT16) (FILE_OPTION_OFFSET + Index),
-        NewMenuEntry->DisplayStringToken,
-        STRING_TOKEN (STR_NULL_STRING),
-        EFI_IFR_FLAG_CALLBACK,
-        0
-        );
-    } else {
-      //
-      // Create Goto opcode for file in FileExplorerStateAddBootOption or FileExplorerStateAddDriverOptionState.
-      //
-      HiiCreateGotoOpCode (
-        mLibStartOpCodeHandle,
-        FORM_FILE_EXPLORER_ID,
-        NewMenuEntry->DisplayStringToken,
-        STRING_TOKEN (STR_NULL_STRING),
-        EFI_IFR_FLAG_CALLBACK,
-        (UINT16) (FILE_OPTION_OFFSET + Index)
-        );
-    }
-  }
-
-  HiiUpdateForm (
-    gFileExplorerPrivate.FeHiiHandle,
-    &FileExplorerGuid,
-    FORM_FILE_EXPLORER_ID,
-    mLibStartOpCodeHandle, // Label FORM_FILE_EXPLORER_ID
-    mLibEndOpCodeHandle    // LABEL_END
-    );
-}
-
-/**
-  Update the file explower page with the refershed file system.
-
-  @param KeyValue        Key value to identify the type of data to expect.
-
-  @retval  EFI_SUCCESS   Update the file explorer form success.
-  @retval  other errors  Error occur when parse one directory.
-
-**/
-EFI_STATUS
-LibUpdateFileExplorer (
-  IN UINT16                       KeyValue
-  )
-{
-  UINT16          FileOptionMask;
-  MENU_ENTRY      *NewMenuEntry;
-  FILE_CONTEXT    *NewFileContext;
-  EFI_STATUS      Status;
-  EFI_FILE_HANDLE FileHandle;
-
-  Status = EFI_SUCCESS;
-  FileOptionMask = (UINT16) (FILE_OPTION_MASK & KeyValue);
-  NewMenuEntry   = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);
-  NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;
-
-  if (NewFileContext->IsDir) {
-    RemoveEntryList (&NewMenuEntry->Link);
-    LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
-    LibGetFileHandleFromMenu (NewMenuEntry, &FileHandle);
-    Status = LibFindFiles (FileHandle, NewFileContext->FileName, NewFileContext->DeviceHandle);
-    if (!EFI_ERROR (Status)) {
-      LibUpdateFileExplorePage ();
-    } else {
-      LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
-    }
-    LibDestroyMenuEntry (NewMenuEntry);
-  }
-
-  return Status;
-}
-
-/**
-  Get the device path info saved in the menu structure.
-
-  @param KeyValue        Key value to identify the type of data to expect.
-
-**/
-VOID
-LibGetDevicePath (
-  IN UINT16                       KeyValue
-  )
-{
-  UINT16          FileOptionMask;
-  MENU_ENTRY      *NewMenuEntry;
-  FILE_CONTEXT    *NewFileContext;
-
-  FileOptionMask    = (UINT16) (FILE_OPTION_MASK & KeyValue);
-
-  NewMenuEntry = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);
-
-  NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;
-
-  if (gFileExplorerPrivate.RetDevicePath != NULL) {
-    FreePool (gFileExplorerPrivate.RetDevicePath);
-  }
-  gFileExplorerPrivate.RetDevicePath = DuplicateDevicePath (NewFileContext->DevicePath);
-}
-
-/**
-  Choose a file in the specified directory. 
-
-  If user input NULL for the RootDirectory, will choose file in the system.
-
-  If user input *File != NULL, function will return the allocate device path
-  info for the choosed file, caller has to free the memory after use it.
-
-  @param  RootDirectory    Pointer to the root directory.
-  @param  FileType         The file type need to choose.
-  @param  ChooseHandler    Function pointer to the extra task need to do
-                           after choose one file.
-  @param  File             Return the device path for the last time chosed file.
-
-  @retval EFI_SUCESS             Choose file success.
-  @retval EFI_INVALID_PARAMETER  Both ChooseHandler and return device path are NULL
-                                 One of them must not NULL.
-  @retval Other errors           Choose file failed.
-**/
-EFI_STATUS
-EFIAPI
-ChooseFile (
-  IN  EFI_DEVICE_PATH_PROTOCOL  *RootDirectory,
-  IN  CHAR16                    *FileType,  OPTIONAL
-  IN  CHOOSE_HANDLER            ChooseHandler,  OPTIONAL
-  OUT EFI_DEVICE_PATH_PROTOCOL  **File  OPTIONAL
-  )
-{
-  EFI_FILE_HANDLE                   FileHandle;
-  EFI_STATUS                        Status;
-  UINT16                            *FileName;
-  EFI_HANDLE                        DeviceHandle;
-
-  if ((ChooseHandler == NULL) && (File == NULL)) {
-    return EFI_INVALID_PARAMETER;
-  }
-
-  FileName = NULL;
-
-  gFileExplorerPrivate.RetDevicePath = NULL;
-  gFileExplorerPrivate.ChooseHandler = ChooseHandler;
-  if (FileType != NULL) {
-    gFileExplorerPrivate.FileType = AllocateCopyPool (StrSize (FileType), FileType);
-    LibToLowerString(gFileExplorerPrivate.FileType);
-  } else {
-    gFileExplorerPrivate.FileType = NULL;
-  }
-
-  if (RootDirectory == NULL) {
-    Status = LibFindFileSystem();
-  } else {
-    Status = LibGetFileHandleFromDevicePath(RootDirectory, &FileHandle, &FileName, &DeviceHandle);
-    if (EFI_ERROR (Status)) {
-      goto Done;
-    }
-
-    Status = LibFindFiles (FileHandle, FileName, DeviceHandle);
-  }
-  if (EFI_ERROR (Status)) {
-    goto Done;
-  }
-
-  LibUpdateFileExplorePage();
-
-  gFileExplorerPrivate.FormBrowser2->SendForm (
-                         gFileExplorerPrivate.FormBrowser2,
-                         &gFileExplorerPrivate.FeHiiHandle,
-                         1,
-                         &FileExplorerGuid,
-                         0,
-                         NULL,
-                         NULL
-                         );
-
-Done:
-  if ((Status == EFI_SUCCESS) && (File != NULL)) {
-    *File  = gFileExplorerPrivate.RetDevicePath;
-  } else if (gFileExplorerPrivate.RetDevicePath != NULL) {
-    FreePool (gFileExplorerPrivate.RetDevicePath);
-  }
-
-  if (gFileExplorerPrivate.FileType != NULL) {
-    FreePool (gFileExplorerPrivate.FileType);
-  }
-
-  LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);
-
-  if (FileName != NULL) {
-    FreePool (FileName);
-  }
-
-  return Status;
-}
-
-/**
-
-  Install Boot Manager Menu driver.
-
-  @param ImageHandle     The image handle.
-  @param SystemTable     The system table.
-
-  @retval  EFI_SUCEESS  Install File explorer library success.
-
-**/
-EFI_STATUS
-EFIAPI
-FileExplorerLibConstructor (
-  IN EFI_HANDLE                            ImageHandle,
-  IN EFI_SYSTEM_TABLE                      *SystemTable
-  )
-{
-  EFI_STATUS                     Status;
-
-  gHiiVendorDevicePath = (HII_VENDOR_DEVICE_PATH*) DuplicateDevicePath ((EFI_DEVICE_PATH_PROTOCOL*)&FeHiiVendorDevicePath);
-  ASSERT (gHiiVendorDevicePath != NULL);
-  CopyGuid (&gHiiVendorDevicePath->VendorDevicePath.Guid, &gEfiCallerIdGuid);
-
-  //
-  // Install Device Path Protocol and Config Access protocol to driver handle
-  //
-  Status = gBS->InstallMultipleProtocolInterfaces (
-                  &gFileExplorerPrivate.FeDriverHandle,
-                  &gEfiDevicePathProtocolGuid,
-                  gHiiVendorDevicePath,
-                  &gEfiHiiConfigAccessProtocolGuid,
-                  &gFileExplorerPrivate.FeConfigAccess,
-                  NULL
-                  );
-  ASSERT_EFI_ERROR (Status);
-
-  //
-  // Post our File Explorer VFR binary to the HII database.
-  //
-  gFileExplorerPrivate.FeHiiHandle = HiiAddPackages (
-                                   &FileExplorerGuid,
-                                   gFileExplorerPrivate.FeDriverHandle,
-                                   FileExplorerVfrBin,
-                                   FileExplorerLibStrings,
-                                   NULL
-                                   );
-  ASSERT (gFileExplorerPrivate.FeHiiHandle != NULL);
-
-  //
-  // Locate Formbrowser2 protocol
-  //
-  Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &gFileExplorerPrivate.FormBrowser2);
-  ASSERT_EFI_ERROR (Status);
-    
-  InitializeListHead (&gFileExplorerPrivate.FsOptionMenu->Head);
-
-  return EFI_SUCCESS;
-}
-
-/**
-  Unloads the application and its installed protocol.
-
-  @param[in]  ImageHandle       Handle that identifies the image to be unloaded.
-  @param[in]  SystemTable       The system table.
-
-  @retval EFI_SUCCESS           The image has been unloaded.
-**/
-EFI_STATUS
-EFIAPI
-FileExplorerLibDestructor (
-  IN EFI_HANDLE                            ImageHandle,
-  IN EFI_SYSTEM_TABLE                      *SystemTable
-  )
-{
-  EFI_STATUS    Status;
-
-  ASSERT (gHiiVendorDevicePath != NULL);
-
-  Status = gBS->UninstallMultipleProtocolInterfaces (
-                  gFileExplorerPrivate.FeDriverHandle,
-                  &gEfiDevicePathProtocolGuid,
-                  gHiiVendorDevicePath,
-                  &gEfiHiiConfigAccessProtocolGuid,
-                  &gFileExplorerPrivate.FeConfigAccess,
-                  NULL
-                  );
-  ASSERT_EFI_ERROR (Status);
-  
-  HiiRemovePackages (gFileExplorerPrivate.FeHiiHandle);
-
-  FreePool (gHiiVendorDevicePath);
-
-  return EFI_SUCCESS;
-}
-
+/** @file

+File explorer related functions.

+

+Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>

+This program and the accompanying materials are licensed and made available under

+the terms and conditions of the BSD License that accompanies this distribution.

+The full text of the license may be found at

+http://opensource.org/licenses/bsd-license.php.

+

+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+

+

+#include "FileExplorer.h"

+

+EFI_GUID FileExplorerGuid       = EFI_FILE_EXPLORE_FORMSET_GUID;

+

+///

+/// File system selection menu

+///

+MENU_OPTION      mFsOptionMenu = {

+  MENU_OPTION_SIGNATURE,

+  {NULL},

+  0,

+  FALSE

+};

+

+FILE_EXPLORER_CALLBACK_DATA  gFileExplorerPrivate = {

+  FILE_EXPLORER_CALLBACK_DATA_SIGNATURE,

+  NULL,

+  NULL,

+  {

+    LibExtractConfig,

+    LibRouteConfig,

+    LibCallback

+  },

+  NULL,

+  &mFsOptionMenu,

+  0

+};

+

+HII_VENDOR_DEVICE_PATH  *gHiiVendorDevicePath;

+

+HII_VENDOR_DEVICE_PATH  FeHiiVendorDevicePath = {

+  {

+    {

+      HARDWARE_DEVICE_PATH,

+      HW_VENDOR_DP,

+      {

+        (UINT8) (sizeof (VENDOR_DEVICE_PATH)),

+        (UINT8) ((sizeof (VENDOR_DEVICE_PATH)) >> 8)

+      }

+    },

+    //

+    // Will be replace with gEfiCallerIdGuid in code.

+    //

+    { 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } }

+  },

+  {

+    END_DEVICE_PATH_TYPE,

+    END_ENTIRE_DEVICE_PATH_SUBTYPE,

+    { 

+      (UINT8) (END_DEVICE_PATH_LENGTH),

+      (UINT8) ((END_DEVICE_PATH_LENGTH) >> 8)

+    }

+  }

+};

+

+VOID                *mLibStartOpCodeHandle = NULL;

+VOID                *mLibEndOpCodeHandle = NULL;

+EFI_IFR_GUID_LABEL  *mLibStartLabel = NULL;

+EFI_IFR_GUID_LABEL  *mLibEndLabel = NULL;

+

+/**

+  This function allows a caller to extract the current configuration for one

+  or more named elements from the target driver.

+

+

+  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Request         A null-terminated Unicode string in <ConfigRequest> format.

+  @param Progress        On return, points to a character in the Request string.

+                         Points to the string's null terminator if request was successful.

+                         Points to the most recent '&' before the first failing name/value

+                         pair (or the beginning of the string if the failure is in the

+                         first name/value pair) if the request was not successful.

+  @param Results         A null-terminated Unicode string in <ConfigAltResp> format which

+                         has all values filled in for the names in the Request string.

+                         String to be allocated by the called function.

+

+  @retval  EFI_INVALID_PARAMETER  Request is illegal syntax, or unknown name.

+  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.

+

+**/

+EFI_STATUS

+EFIAPI

+LibExtractConfig (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  CONST EFI_STRING                       Request,

+  OUT EFI_STRING                             *Progress,

+  OUT EFI_STRING                             *Results

+  )

+{

+  if (Progress == NULL || Results == NULL) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  *Progress = Request;

+  return EFI_NOT_FOUND;

+}

+

+/**

+  This function processes the results of changes in configuration.

+

+

+  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Configuration   A null-terminated Unicode string in <ConfigResp> format.

+  @param Progress        A pointer to a string filled in with the offset of the most

+                         recent '&' before the first failing name/value pair (or the

+                         beginning of the string if the failure is in the first

+                         name/value pair) or the terminating NULL if all was successful.

+

+  @retval  EFI_INVALID_PARAMETER  Configuration is NULL.

+  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.

+

+**/

+EFI_STATUS

+EFIAPI

+LibRouteConfig (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  CONST EFI_STRING                       Configuration,

+  OUT EFI_STRING                             *Progress

+  )

+{

+  if (Configuration == NULL || Progress == NULL) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  *Progress = Configuration;

+  return EFI_NOT_FOUND;

+}

+

+/**

+  This function processes the results of changes in configuration.

+  When user select a interactive opcode, this callback will be triggered.

+  Based on the Question(QuestionId) that triggers the callback, the corresponding

+  actions is performed. It handles:

+

+  1) Process the axtra action or exit file explorer when user select one file .

+  2) update of file content if a dir is selected.

+

+  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Action          Specifies the type of action taken by the browser.

+  @param QuestionId      A unique value which is sent to the original exporting driver

+                         so that it can identify the type of data to expect.

+  @param Type            The type of value for the question.

+  @param Value           A pointer to the data being sent to the original exporting driver.

+  @param ActionRequest   On return, points to the action requested by the callback function.

+

+  @retval  EFI_SUCCESS           The callback successfully handled the action.

+  @retval  other error           Error occur when parse one directory.

+**/

+EFI_STATUS

+EFIAPI

+LibCallback (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  EFI_BROWSER_ACTION                     Action,

+  IN  EFI_QUESTION_ID                        QuestionId,

+  IN  UINT8                                  Type,

+  IN  EFI_IFR_TYPE_VALUE                     *Value,

+  OUT EFI_BROWSER_ACTION_REQUEST             *ActionRequest

+  )

+{

+  EFI_STATUS    Status;

+  BOOLEAN       NeedExit;

+

+  NeedExit = TRUE;

+  

+  if (Action != EFI_BROWSER_ACTION_CHANGING && Action != EFI_BROWSER_ACTION_CHANGED) {

+    //

+    // Do nothing for other UEFI Action. Only do call back when data is changed.

+    //

+    return EFI_UNSUPPORTED;

+  }

+

+  *ActionRequest = EFI_BROWSER_ACTION_REQUEST_NONE;

+

+  if (Action == EFI_BROWSER_ACTION_CHANGED) {

+    if ((Value == NULL) || (ActionRequest == NULL)) {

+      return EFI_INVALID_PARAMETER;

+    }

+    

+    if (QuestionId >= FILE_OPTION_OFFSET) {

+      LibGetDevicePath(QuestionId);

+

+      //

+      // Process the extra action.

+      //

+      if (gFileExplorerPrivate.ChooseHandler != NULL) {

+        NeedExit = gFileExplorerPrivate.ChooseHandler (gFileExplorerPrivate.RetDevicePath);

+      }

+

+      if (NeedExit) {

+        *ActionRequest = EFI_BROWSER_ACTION_REQUEST_EXIT;

+      }

+    }

+  } else if (Action == EFI_BROWSER_ACTION_CHANGING) {

+    if (Value == NULL) {

+      return EFI_INVALID_PARAMETER;

+    }

+    

+    if (QuestionId >= FILE_OPTION_OFFSET) {

+      Status = LibUpdateFileExplorer (QuestionId);

+      if (EFI_ERROR (Status)) {

+        return Status;

+      }

+    }

+  }

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Create a menu entry by given menu type.

+

+  @retval NULL           If failed to create the menu.

+  @return the new menu entry.

+

+**/

+MENU_ENTRY *

+LibCreateMenuEntry (

+  VOID

+  )

+{

+  MENU_ENTRY *MenuEntry;

+

+  //

+  // Create new menu entry

+  //

+  MenuEntry = AllocateZeroPool (sizeof (MENU_ENTRY));

+  if (MenuEntry == NULL) {

+    return NULL;

+  }

+

+  MenuEntry->VariableContext = AllocateZeroPool (sizeof (FILE_CONTEXT));

+  if (MenuEntry->VariableContext == NULL) {

+    FreePool (MenuEntry);

+    return NULL;

+  }

+

+  MenuEntry->Signature        = MENU_ENTRY_SIGNATURE;

+  return MenuEntry;

+}

+

+

+/**

+  Get the Menu Entry from the list in Menu Entry List.

+

+  If MenuNumber is great or equal to the number of Menu

+  Entry in the list, then ASSERT.

+

+  @param MenuOption      The Menu Entry List to read the menu entry.

+  @param MenuNumber      The index of Menu Entry.

+

+  @return The Menu Entry.

+

+**/

+MENU_ENTRY *

+LibGetMenuEntry (

+  MENU_OPTION         *MenuOption,

+  UINTN               MenuNumber

+  )

+{

+  MENU_ENTRY      *NewMenuEntry;

+  UINTN           Index;

+  LIST_ENTRY      *List;

+

+  ASSERT (MenuNumber < MenuOption->MenuNumber);

+

+  List = MenuOption->Head.ForwardLink;

+  for (Index = 0; Index < MenuNumber; Index++) {

+    List = List->ForwardLink;

+  }

+

+  NewMenuEntry = CR (List, MENU_ENTRY, Link, MENU_ENTRY_SIGNATURE);

+

+  return NewMenuEntry;

+}

+

+/**

+  Free up all resource allocated for a BM_MENU_ENTRY.

+

+  @param MenuEntry   A pointer to BM_MENU_ENTRY.

+

+**/

+VOID

+LibDestroyMenuEntry (

+  MENU_ENTRY         *MenuEntry

+  )

+{

+  FILE_CONTEXT           *FileContext;

+

+  FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;

+

+  if (!FileContext->IsRoot) {

+    FreePool (FileContext->DevicePath);

+  } else {

+    if (FileContext->FileHandle != NULL) {

+      FileContext->FileHandle->Close (FileContext->FileHandle);

+    }

+  }

+

+  if (FileContext->FileName != NULL) {

+    FreePool (FileContext->FileName);

+  }

+

+  FreePool (FileContext);

+

+  FreePool (MenuEntry->DisplayString);

+  if (MenuEntry->HelpString != NULL) {

+    FreePool (MenuEntry->HelpString);

+  }

+

+  FreePool (MenuEntry);

+}

+

+

+/**

+  Free resources allocated in Allocate Rountine.

+

+  @param FreeMenu        Menu to be freed

+**/

+VOID

+LibFreeMenu (

+  MENU_OPTION        *FreeMenu

+  )

+{

+  MENU_ENTRY *MenuEntry;

+  while (!IsListEmpty (&FreeMenu->Head)) {

+    MenuEntry = CR (

+                  FreeMenu->Head.ForwardLink,

+                  MENU_ENTRY,

+                  Link,

+                  MENU_ENTRY_SIGNATURE

+                  );

+    RemoveEntryList (&MenuEntry->Link);

+    LibDestroyMenuEntry (MenuEntry);

+  }

+  FreeMenu->MenuNumber = 0;

+}

+

+/**

+

+  Function opens and returns a file handle to the root directory of a volume.

+

+  @param DeviceHandle    A handle for a device

+

+  @return A valid file handle or NULL is returned

+

+**/

+EFI_FILE_HANDLE

+LibOpenRoot (

+  IN EFI_HANDLE                   DeviceHandle

+  )

+{

+  EFI_STATUS                      Status;

+  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *Volume;

+  EFI_FILE_HANDLE                 File;

+

+  File = NULL;

+

+  //

+  // File the file system interface to the device

+  //

+  Status = gBS->HandleProtocol (

+                  DeviceHandle,

+                  &gEfiSimpleFileSystemProtocolGuid,

+                  (VOID *) &Volume

+                  );

+

+  //

+  // Open the root directory of the volume

+  //

+  if (!EFI_ERROR (Status)) {

+    Status = Volume->OpenVolume (

+                      Volume,

+                      &File

+                      );

+  }

+  //

+  // Done

+  //

+  return EFI_ERROR (Status) ? NULL : File;

+}

+

+/**

+  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 *

+LibDevicePathToStr (

+  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;

+}

+

+/**

+  Duplicate a string.

+

+  @param Src             The source.

+

+  @return A new string which is duplicated copy of the source.

+  @retval NULL If there is not enough memory.

+

+**/

+CHAR16 *

+LibStrDuplicate (

+  IN CHAR16   *Src

+  )

+{

+  CHAR16  *Dest;

+  UINTN   Size;

+

+  Size  = StrSize (Src);

+  Dest  = AllocateZeroPool (Size);

+  ASSERT (Dest != NULL);

+  if (Dest != NULL) {

+    CopyMem (Dest, Src, Size);

+  }

+

+  return Dest;

+}

+

+/**

+

+  Function gets the file information from an open file descriptor, and stores it

+  in a buffer allocated from pool.

+

+  @param FHand           File Handle.

+  @param InfoType        Info type need to get.

+

+  @retval                A pointer to a buffer with file information or NULL is returned

+

+**/

+VOID *

+LibFileInfo (

+  IN EFI_FILE_HANDLE      FHand,

+  IN EFI_GUID             *InfoType

+  )

+{

+  EFI_STATUS    Status;

+  EFI_FILE_INFO *Buffer;

+  UINTN         BufferSize;

+

+  Buffer      = NULL;

+  BufferSize  = 0;

+  

+  Status = FHand->GetInfo (

+                    FHand,

+                    InfoType,

+                    &BufferSize,

+                    Buffer

+                    );

+  if (Status == EFI_BUFFER_TOO_SMALL) {

+    Buffer = AllocatePool (BufferSize);

+    ASSERT (Buffer != NULL);

+  }

+

+  Status = FHand->GetInfo (

+                    FHand,

+                    InfoType,

+                    &BufferSize,

+                    Buffer

+                    );

+

+  return Buffer;

+}

+

+/**

+

+  Get file type base on the file name.

+  Just cut the file name, from the ".". eg ".efi"

+

+  @param FileName  File need to be checked.

+

+  @retval the file type string.

+

+**/

+CHAR16*

+LibGetTypeFromName (

+  IN CHAR16   *FileName

+  )

+{

+  UINTN    Index;

+

+  Index = StrLen (FileName) - 1;

+  while ((FileName[Index] != L'.') && (Index != 0)) {

+    Index--;

+  }

+

+  return Index == 0 ? NULL : &FileName[Index];

+}

+

+/**

+  Converts the unicode character of the string from uppercase to lowercase.

+  This is a internal function.

+

+  @param ConfigString  String to be converted

+

+**/

+VOID

+LibToLowerString (

+  IN CHAR16  *String

+  )

+{

+  CHAR16      *TmpStr;

+

+  for (TmpStr = String; *TmpStr != L'\0'; TmpStr++) {

+    if (*TmpStr >= L'A' && *TmpStr <= L'Z') {

+      *TmpStr = (CHAR16) (*TmpStr - L'A' + L'a');

+    }

+  }

+}

+

+/**

+

+  Check whether current FileName point to a valid

+  Efi Image File.

+

+  @param FileName  File need to be checked.

+

+  @retval TRUE  Is Efi Image

+  @retval FALSE Not a valid Efi Image

+

+**/

+BOOLEAN

+LibIsSupportedFileType (

+  IN UINT16  *FileName

+  )

+{

+  CHAR16     *InputFileType;

+  CHAR16     *TmpStr;

+  BOOLEAN    IsSupported;

+

+  if (gFileExplorerPrivate.FileType == NULL) {

+    return TRUE;

+  }

+

+  InputFileType = LibGetTypeFromName (FileName);

+  //

+  // If the file not has *.* style, always return TRUE.

+  //

+  if (InputFileType == NULL) {

+    return TRUE;

+  }

+

+  TmpStr = AllocateCopyPool (StrSize (InputFileType), InputFileType);

+  LibToLowerString(TmpStr);

+

+  IsSupported = (StrStr (gFileExplorerPrivate.FileType, TmpStr) == NULL ? FALSE : TRUE);

+

+  FreePool (TmpStr);

+  return IsSupported;

+}

+

+/**

+

+  Append file name to existing file name.

+

+  @param Str1  The existing file name

+  @param Str2  The file name to be appended

+

+  @return Allocate a new string to hold the appended result.

+          Caller is responsible to free the returned string.

+

+**/

+CHAR16 *

+LibAppendFileName (

+  IN  CHAR16  *Str1,

+  IN  CHAR16  *Str2

+  )

+{

+  UINTN   Size1;

+  UINTN   Size2;

+  UINTN   MaxLen;

+  CHAR16  *Str;

+  CHAR16  *TmpStr;

+  CHAR16  *Ptr;

+  CHAR16  *LastSlash;

+

+  Size1 = StrSize (Str1);

+  Size2 = StrSize (Str2);

+  MaxLen = (Size1 + Size2 + sizeof (CHAR16))/ sizeof (CHAR16);

+  Str   = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16));

+  ASSERT (Str != NULL);

+

+  TmpStr = AllocateZeroPool (Size1 + Size2 + sizeof (CHAR16)); 

+  ASSERT (TmpStr != NULL);

+

+  StrCpyS (Str, MaxLen, Str1);

+  if (!((*Str == '\\') && (*(Str + 1) == 0))) {

+    StrCatS (Str, MaxLen, L"\\");

+  }

+

+  StrCatS (Str, MaxLen, Str2);

+

+  Ptr       = Str;

+  LastSlash = Str;

+  while (*Ptr != 0) {

+    if (*Ptr == '\\' && *(Ptr + 1) == '.' && *(Ptr + 2) == '.' && *(Ptr + 3) == L'\\') {

+      //

+      // Convert "\Name\..\" to "\"

+      // DO NOT convert the .. if it is at the end of the string. This will

+      // break the .. behavior in changing directories.

+      //

+

+      //

+      // Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings 

+      // that overlap.

+      //

+      StrCpyS (TmpStr, MaxLen, Ptr + 3);

+      StrCpyS (LastSlash, MaxLen - (UINTN) (LastSlash - Str), TmpStr);

+      Ptr = LastSlash;

+    } else if (*Ptr == '\\' && *(Ptr + 1) == '.' && *(Ptr + 2) == '\\') {

+      //

+      // Convert a "\.\" to a "\"

+      //

+

+      //

+      // Use TmpStr as a backup, as StrCpyS in BaseLib does not handle copy of two strings 

+      // that overlap.

+      //

+      StrCpyS (TmpStr, MaxLen, Ptr + 2);

+      StrCpyS (Ptr, MaxLen - (UINTN) (Ptr - Str), TmpStr);

+      Ptr = LastSlash;

+    } else if (*Ptr == '\\') {

+      LastSlash = Ptr;

+    }

+

+    Ptr++;

+  }

+

+  FreePool (TmpStr);

+  

+  return Str;

+}

+

+/**

+  This function build the FsOptionMenu list which records all

+  available file system in the system. They includes all instances

+  of EFI_SIMPLE_FILE_SYSTEM_PROTOCOL, all instances of EFI_LOAD_FILE_SYSTEM.

+

+

+  @retval  EFI_SUCCESS             Success find the file system

+  @retval  EFI_OUT_OF_RESOURCES    Can not create menu entry

+

+**/

+EFI_STATUS

+LibFindFileSystem (

+  VOID

+  )

+{

+  UINTN                        NoSimpleFsHandles;

+  UINTN                        NoLoadFileHandles;

+  EFI_HANDLE                   *SimpleFsHandle;

+  EFI_HANDLE                   *LoadFileHandle;

+  UINT16                       *VolumeLabel;

+  UINTN                        Index;

+  EFI_STATUS                   Status;

+  MENU_ENTRY                   *MenuEntry;

+  FILE_CONTEXT                 *FileContext;

+  UINTN                        OptionNumber;

+  EFI_FILE_SYSTEM_VOLUME_LABEL *Info;

+

+  NoSimpleFsHandles = 0;

+  NoLoadFileHandles = 0;

+  OptionNumber      = 0;

+

+  //

+  // Locate Handles that support Simple File System protocol

+  //

+  Status = gBS->LocateHandleBuffer (

+                  ByProtocol,

+                  &gEfiSimpleFileSystemProtocolGuid,

+                  NULL,

+                  &NoSimpleFsHandles,

+                  &SimpleFsHandle

+                  );

+  if (!EFI_ERROR (Status)) {

+    //

+    // Find all the instances of the File System prototocol

+    //

+    for (Index = 0; Index < NoSimpleFsHandles; Index++) {

+      //

+      // Allocate pool for this load option

+      //

+      MenuEntry = LibCreateMenuEntry ();

+      if (NULL == MenuEntry) {

+        FreePool (SimpleFsHandle);

+        return EFI_OUT_OF_RESOURCES;

+      }

+

+      FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;

+      FileContext->DeviceHandle = SimpleFsHandle[Index];

+      FileContext->FileHandle = LibOpenRoot (FileContext->DeviceHandle);

+      if (FileContext->FileHandle == NULL) {

+        LibDestroyMenuEntry (MenuEntry);

+        continue;

+      }

+

+      MenuEntry->HelpString = LibDevicePathToStr (DevicePathFromHandle (FileContext->DeviceHandle));

+      FileContext->FileName = LibStrDuplicate (L"\\");

+      FileContext->DevicePath = FileDevicePath (FileContext->DeviceHandle, FileContext->FileName);

+      FileContext->IsDir = TRUE;

+      FileContext->IsRoot = TRUE;

+

+      //

+      // Get current file system's Volume Label

+      //

+      Info = (EFI_FILE_SYSTEM_VOLUME_LABEL *) LibFileInfo (FileContext->FileHandle, &gEfiFileSystemVolumeLabelInfoIdGuid);

+      if (Info == NULL) {

+        VolumeLabel = L"NO FILE SYSTEM INFO";

+      } else {

+        if (Info->VolumeLabel == NULL) {

+          VolumeLabel = L"NULL VOLUME LABEL";

+        } else {

+          VolumeLabel = Info->VolumeLabel;

+          if (*VolumeLabel == 0x0000) {

+            VolumeLabel = L"NO VOLUME LABEL";

+          }

+        }

+      }

+      MenuEntry->DisplayString  = AllocateZeroPool (MAX_CHAR);

+      ASSERT (MenuEntry->DisplayString != NULL);

+      UnicodeSPrint (

+        MenuEntry->DisplayString,

+        MAX_CHAR,

+        L"%s, [%s]",

+        VolumeLabel,

+        MenuEntry->HelpString

+        );

+  	  MenuEntry->DisplayStringToken = HiiSetString (

+                                             gFileExplorerPrivate.FeHiiHandle,

+                                             0,

+                                             MenuEntry->DisplayString,

+                                             NULL

+                                             );

+      FreePool (Info);

+

+      OptionNumber++;

+      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &MenuEntry->Link);

+    }

+  }

+

+  if (NoSimpleFsHandles != 0) {

+    FreePool (SimpleFsHandle);

+  }

+

+  //

+  // Searching for handles that support Load File protocol

+  //

+  Status = gBS->LocateHandleBuffer (

+                  ByProtocol,

+                  &gEfiLoadFileProtocolGuid,

+                  NULL,

+                  &NoLoadFileHandles,

+                  &LoadFileHandle

+                  );

+

+  if (!EFI_ERROR (Status)) {

+    for (Index = 0; Index < NoLoadFileHandles; Index++) {

+      MenuEntry = LibCreateMenuEntry ();

+      if (NULL == MenuEntry) {

+        FreePool (LoadFileHandle);

+        return EFI_OUT_OF_RESOURCES;

+      }

+

+      FileContext = (FILE_CONTEXT *) MenuEntry->VariableContext;

+      FileContext->DeviceHandle = LoadFileHandle[Index];

+      FileContext->IsRoot = TRUE;

+

+      FileContext->DevicePath = DevicePathFromHandle (FileContext->DeviceHandle);

+      FileContext->FileName = LibDevicePathToStr (FileContext->DevicePath);

+

+      MenuEntry->HelpString = LibDevicePathToStr (FileContext->DevicePath);

+      MenuEntry->DisplayString = AllocateZeroPool (MAX_CHAR);

+      ASSERT (MenuEntry->DisplayString != NULL);

+      UnicodeSPrint (

+        MenuEntry->DisplayString,

+        MAX_CHAR,

+        L"Load File [%s]",

+        MenuEntry->HelpString

+        );

+      MenuEntry->DisplayStringToken = HiiSetString (

+                                           gFileExplorerPrivate.FeHiiHandle,

+                                           0,

+                                           MenuEntry->DisplayString,

+                                           NULL

+                                           );

+

+      OptionNumber++;

+      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &MenuEntry->Link);

+    }

+  }

+

+  if (NoLoadFileHandles != 0) {

+    FreePool (LoadFileHandle);

+  }

+

+  gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Find the file handle from the input menu info.

+  

+  @param  MenuEntry        Input Menu info.

+  @param  RetFileHandle    Return the file handle for the input device path.

+  

+  @retval EFI_SUCESS       Find the file handle success.

+  @retval Other            Find the file handle failure.

+**/

+EFI_STATUS

+LibGetFileHandleFromMenu (

+  IN  MENU_ENTRY                *MenuEntry,  

+  OUT EFI_FILE_HANDLE           *RetFileHandle

+  )

+{

+  EFI_FILE_HANDLE Dir;

+  EFI_FILE_HANDLE NewDir;

+  FILE_CONTEXT    *FileContext;

+  EFI_STATUS      Status;

+

+  FileContext   = (FILE_CONTEXT *) MenuEntry->VariableContext;

+  Dir           = FileContext->FileHandle;

+

+  //

+  // Open current directory to get files from it

+  //

+  Status = Dir->Open (

+                  Dir,

+                  &NewDir,

+                  FileContext->FileName,

+                  EFI_FILE_READ_ONLY,

+                  0

+                  );

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+

+  if (!FileContext->IsRoot) {

+    Dir->Close (Dir);

+  }

+

+  *RetFileHandle = NewDir;

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Find the file handle from the input device path info.

+  

+  @param  RootDirectory    Device path info.

+  @param  RetFileHandle    Return the file handle for the input device path.

+  @param  ParentFileName   Parent file name.

+  @param  DeviceHandle     Driver handle for this partition.

+  

+  @retval EFI_SUCESS       Find the file handle success.

+  @retval Other            Find the file handle failure.

+**/

+EFI_STATUS

+LibGetFileHandleFromDevicePath (

+  IN  EFI_DEVICE_PATH_PROTOCOL  *RootDirectory,  

+  OUT EFI_FILE_HANDLE           *RetFileHandle,

+  OUT UINT16                    **ParentFileName,

+  OUT EFI_HANDLE                *DeviceHandle

+  )

+{

+  EFI_DEVICE_PATH_PROTOCOL          *DevicePathNode;

+  EFI_DEVICE_PATH_PROTOCOL          *TempDevicePathNode;

+  EFI_STATUS                        Status;

+  EFI_HANDLE                        Handle;

+  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL   *Volume;

+  EFI_FILE_HANDLE                   FileHandle;

+  EFI_FILE_HANDLE                   LastHandle;

+  CHAR16                            *TempPath;

+

+  *ParentFileName = NULL;

+

+  //

+  // Attempt to access the file via a file system interface

+  //

+  DevicePathNode = RootDirectory;

+  Status = gBS->LocateDevicePath (&gEfiSimpleFileSystemProtocolGuid, &DevicePathNode, &Handle);

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+  

+  Status = gBS->HandleProtocol (Handle, &gEfiSimpleFileSystemProtocolGuid, (VOID**)&Volume);

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+  

+  //

+  // Open the Volume to get the File System handle

+  //

+  Status = Volume->OpenVolume (Volume, &FileHandle);

+  if (EFI_ERROR (Status)) {

+    return Status;

+  }

+

+  *DeviceHandle = Handle;

+

+  if (IsDevicePathEnd(DevicePathNode)) {

+    *ParentFileName = AllocateCopyPool (StrSize (L"\\"), L"\\");

+    *RetFileHandle = FileHandle;

+    return EFI_SUCCESS;

+  }

+  

+  //

+  // Duplicate the device path to avoid the access to unaligned device path node.

+  // Because the device path consists of one or more FILE PATH MEDIA DEVICE PATH

+  // nodes, It assures the fields in device path nodes are 2 byte aligned.

+  //

+  TempDevicePathNode = DuplicateDevicePath (DevicePathNode);

+  if (TempDevicePathNode == NULL) {

+

+    //

+    // Setting Status to an EFI_ERROR value will cause the rest of

+    // the file system support below to be skipped.

+    //

+    Status = EFI_OUT_OF_RESOURCES;

+  }

+        

+  //

+  // Parse each MEDIA_FILEPATH_DP node. There may be more than one, since the

+  // directory information and filename can be seperate. The goal is to inch

+  // our way down each device path node and close the previous node

+  //

+  DevicePathNode = TempDevicePathNode;

+  while (!EFI_ERROR (Status) && !IsDevicePathEnd (DevicePathNode)) {

+    if (DevicePathType (DevicePathNode) != MEDIA_DEVICE_PATH ||

+        DevicePathSubType (DevicePathNode) != MEDIA_FILEPATH_DP) {

+      Status = EFI_UNSUPPORTED;

+      goto Done;

+    }

+

+    LastHandle = FileHandle;

+    FileHandle = NULL;

+

+    Status = LastHandle->Open (

+                          LastHandle,

+                          &FileHandle,

+                          ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName,

+                          EFI_FILE_MODE_READ,

+                          0

+                          );

+    if (*ParentFileName == NULL) {

+      *ParentFileName = AllocateCopyPool (StrSize (((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName), ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName);

+    } else {

+      TempPath = LibAppendFileName (*ParentFileName, ((FILEPATH_DEVICE_PATH *) DevicePathNode)->PathName);

+      FreePool (*ParentFileName);

+      *ParentFileName = TempPath;

+    }

+

+    //

+    // Close the previous node

+    //

+    LastHandle->Close (LastHandle);

+

+    DevicePathNode = NextDevicePathNode (DevicePathNode);

+  }

+

+  if (EFI_ERROR (Status)) {

+    goto Done;

+  }

+

+  *RetFileHandle = FileHandle;

+

+  Status = EFI_SUCCESS;

+

+Done:

+  if (TempDevicePathNode != NULL) {

+    FreePool (TempDevicePathNode);

+  }

+

+  if ((FileHandle != NULL) && (EFI_ERROR (Status))) {

+    FileHandle->Close (FileHandle);

+  }

+

+  return Status;

+}

+

+/**

+  Find files under current directory.

+  

+  All files and sub-directories in current directory

+  will be stored in DirectoryMenu for future use.

+

+  @param FileHandle    Parent file handle. 

+  @param FileName      Parent file name.

+  @param DeviceHandle  Driver handle for this partition.

+

+  @retval EFI_SUCCESS         Get files from current dir successfully.

+  @return Other value if can't get files from current dir.

+

+**/

+EFI_STATUS

+LibFindFiles (

+  IN EFI_FILE_HANDLE           FileHandle,

+  IN UINT16                    *FileName,

+  IN EFI_HANDLE                DeviceHandle

+  )

+{

+  EFI_FILE_INFO   *DirInfo;

+  UINTN           BufferSize;

+  UINTN           DirBufferSize;

+  MENU_ENTRY      *NewMenuEntry;

+  FILE_CONTEXT    *NewFileContext;

+  UINTN           Pass;

+  EFI_STATUS      Status;

+  UINTN           OptionNumber;

+

+  OptionNumber = 0;

+

+  DirBufferSize = sizeof (EFI_FILE_INFO) + 1024;

+  DirInfo       = AllocateZeroPool (DirBufferSize);

+  if (DirInfo == NULL) {

+    return EFI_OUT_OF_RESOURCES;

+  }

+

+  //

+  // Get all files in current directory

+  // Pass 1 to get Directories

+  // Pass 2 to get files that are EFI images

+  //

+  for (Pass = 1; Pass <= 2; Pass++) {

+    FileHandle->SetPosition (FileHandle, 0);

+    for (;;) {

+      BufferSize  = DirBufferSize;

+      Status      = FileHandle->Read (FileHandle, &BufferSize, DirInfo);

+      if (EFI_ERROR (Status) || BufferSize == 0) {

+        break;

+      }

+

+      if (((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0 && Pass == 2) ||

+          ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == 0 && Pass == 1)

+          ) {

+        //

+        // Pass 1 is for Directories

+        // Pass 2 is for file names

+        //

+        continue;

+      }

+

+      if (!((DirInfo->Attribute & EFI_FILE_DIRECTORY) != 0 || LibIsSupportedFileType (DirInfo->FileName))) {

+        //

+        // Slip file unless it is a directory entry or a .EFI file

+        //

+        continue;

+      }

+

+      NewMenuEntry = LibCreateMenuEntry ();

+      if (NULL == NewMenuEntry) {

+        return EFI_OUT_OF_RESOURCES;

+      }

+

+      NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;

+      NewFileContext->DeviceHandle = DeviceHandle;

+      NewFileContext->FileName = LibAppendFileName (FileName, DirInfo->FileName);

+      NewFileContext->FileHandle = FileHandle;

+      NewFileContext->DevicePath = FileDevicePath (NewFileContext->DeviceHandle, NewFileContext->FileName);

+      NewMenuEntry->HelpString = NULL;

+      NewFileContext->IsDir = (BOOLEAN) ((DirInfo->Attribute & EFI_FILE_DIRECTORY) == EFI_FILE_DIRECTORY);

+

+      if (NewFileContext->IsDir) {

+        BufferSize = StrLen (DirInfo->FileName) * 2 + 6;

+        NewMenuEntry->DisplayString = AllocateZeroPool (BufferSize);

+        UnicodeSPrint (

+          NewMenuEntry->DisplayString,

+          BufferSize,

+          L"<%s>",

+          DirInfo->FileName

+          );

+      } else {

+        NewMenuEntry->DisplayString = LibStrDuplicate (DirInfo->FileName);

+      }

+      

+      NewMenuEntry->DisplayStringToken = HiiSetString (

+                                           gFileExplorerPrivate.FeHiiHandle,

+                                           0,

+                                           NewMenuEntry->DisplayString,

+                                           NULL

+                                           );

+

+      NewFileContext->IsRoot            = FALSE;

+

+      OptionNumber++;

+      InsertTailList (&gFileExplorerPrivate.FsOptionMenu->Head, &NewMenuEntry->Link);

+    }

+  }

+

+  gFileExplorerPrivate.FsOptionMenu->MenuNumber = OptionNumber;

+

+  FreePool (DirInfo);

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Refresh the global UpdateData structure.

+

+**/

+VOID

+LibRefreshUpdateData (

+  VOID

+  )

+{

+  //

+  // Free current updated date

+  //

+  if (mLibStartOpCodeHandle != NULL) {

+    HiiFreeOpCodeHandle (mLibStartOpCodeHandle);

+  }

+  if (mLibEndOpCodeHandle != NULL) {

+    HiiFreeOpCodeHandle (mLibEndOpCodeHandle);

+  }

+

+  //

+  // Create new OpCode Handle

+  //

+  mLibStartOpCodeHandle = HiiAllocateOpCodeHandle ();

+  mLibEndOpCodeHandle = HiiAllocateOpCodeHandle ();

+

+  //

+  // Create Hii Extend Label OpCode as the start opcode

+  //

+  mLibStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (

+                                         mLibStartOpCodeHandle,

+                                         &gEfiIfrTianoGuid,

+                                         NULL,

+                                         sizeof (EFI_IFR_GUID_LABEL)

+                                         );

+  mLibStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;

+

+  mLibStartLabel->Number = FORM_FILE_EXPLORER_ID;

+

+  //

+  // Create Hii Extend Label OpCode as the start opcode

+  //

+  mLibEndLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (

+                                         mLibEndOpCodeHandle,

+                                         &gEfiIfrTianoGuid,

+                                         NULL,

+                                         sizeof (EFI_IFR_GUID_LABEL)

+                                         );

+  mLibEndLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;

+

+  mLibEndLabel->Number = LABEL_END;

+}

+

+/**

+

+  Update the File Explore page.

+

+**/

+VOID

+LibUpdateFileExplorePage (

+  VOID

+  )

+{

+  UINTN           Index;

+  MENU_ENTRY      *NewMenuEntry;

+  FILE_CONTEXT    *NewFileContext;

+  MENU_OPTION     *MenuOption;

+

+  NewMenuEntry    = NULL;

+  NewFileContext  = NULL;

+

+  LibRefreshUpdateData ();

+  MenuOption = gFileExplorerPrivate.FsOptionMenu;

+

+  for (Index = 0; Index < MenuOption->MenuNumber; Index++) {

+    NewMenuEntry    = LibGetMenuEntry (MenuOption, Index);

+    NewFileContext  = (FILE_CONTEXT *) NewMenuEntry->VariableContext;

+

+    if (!NewFileContext->IsDir) {

+      //

+      // Create Text opcode for directory, also create Text opcode for file in FileExplorerStateBootFromFile.

+      //

+      HiiCreateActionOpCode (

+        mLibStartOpCodeHandle,

+        (UINT16) (FILE_OPTION_OFFSET + Index),

+        NewMenuEntry->DisplayStringToken,

+        STRING_TOKEN (STR_NULL_STRING),

+        EFI_IFR_FLAG_CALLBACK,

+        0

+        );

+    } else {

+      //

+      // Create Goto opcode for file in FileExplorerStateAddBootOption or FileExplorerStateAddDriverOptionState.

+      //

+      HiiCreateGotoOpCode (

+        mLibStartOpCodeHandle,

+        FORM_FILE_EXPLORER_ID,

+        NewMenuEntry->DisplayStringToken,

+        STRING_TOKEN (STR_NULL_STRING),

+        EFI_IFR_FLAG_CALLBACK,

+        (UINT16) (FILE_OPTION_OFFSET + Index)

+        );

+    }

+  }

+

+  HiiUpdateForm (

+    gFileExplorerPrivate.FeHiiHandle,

+    &FileExplorerGuid,

+    FORM_FILE_EXPLORER_ID,

+    mLibStartOpCodeHandle, // Label FORM_FILE_EXPLORER_ID

+    mLibEndOpCodeHandle    // LABEL_END

+    );

+}

+

+/**

+  Update the file explower page with the refershed file system.

+

+  @param KeyValue        Key value to identify the type of data to expect.

+

+  @retval  EFI_SUCCESS   Update the file explorer form success.

+  @retval  other errors  Error occur when parse one directory.

+

+**/

+EFI_STATUS

+LibUpdateFileExplorer (

+  IN UINT16                       KeyValue

+  )

+{

+  UINT16          FileOptionMask;

+  MENU_ENTRY      *NewMenuEntry;

+  FILE_CONTEXT    *NewFileContext;

+  EFI_STATUS      Status;

+  EFI_FILE_HANDLE FileHandle;

+

+  Status = EFI_SUCCESS;

+  FileOptionMask = (UINT16) (FILE_OPTION_MASK & KeyValue);

+  NewMenuEntry   = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);

+  NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;

+

+  if (NewFileContext->IsDir) {

+    RemoveEntryList (&NewMenuEntry->Link);

+    LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);

+    LibGetFileHandleFromMenu (NewMenuEntry, &FileHandle);

+    Status = LibFindFiles (FileHandle, NewFileContext->FileName, NewFileContext->DeviceHandle);

+    if (!EFI_ERROR (Status)) {

+      LibUpdateFileExplorePage ();

+    } else {

+      LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);

+    }

+    LibDestroyMenuEntry (NewMenuEntry);

+  }

+

+  return Status;

+}

+

+/**

+  Get the device path info saved in the menu structure.

+

+  @param KeyValue        Key value to identify the type of data to expect.

+

+**/

+VOID

+LibGetDevicePath (

+  IN UINT16                       KeyValue

+  )

+{

+  UINT16          FileOptionMask;

+  MENU_ENTRY      *NewMenuEntry;

+  FILE_CONTEXT    *NewFileContext;

+

+  FileOptionMask    = (UINT16) (FILE_OPTION_MASK & KeyValue);

+

+  NewMenuEntry = LibGetMenuEntry (gFileExplorerPrivate.FsOptionMenu, FileOptionMask);

+

+  NewFileContext = (FILE_CONTEXT *) NewMenuEntry->VariableContext;

+

+  if (gFileExplorerPrivate.RetDevicePath != NULL) {

+    FreePool (gFileExplorerPrivate.RetDevicePath);

+  }

+  gFileExplorerPrivate.RetDevicePath = DuplicateDevicePath (NewFileContext->DevicePath);

+}

+

+/**

+  Choose a file in the specified directory. 

+

+  If user input NULL for the RootDirectory, will choose file in the system.

+

+  If user input *File != NULL, function will return the allocate device path

+  info for the choosed file, caller has to free the memory after use it.

+

+  @param  RootDirectory    Pointer to the root directory.

+  @param  FileType         The file type need to choose.

+  @param  ChooseHandler    Function pointer to the extra task need to do

+                           after choose one file.

+  @param  File             Return the device path for the last time chosed file.

+

+  @retval EFI_SUCESS             Choose file success.

+  @retval EFI_INVALID_PARAMETER  Both ChooseHandler and return device path are NULL

+                                 One of them must not NULL.

+  @retval Other errors           Choose file failed.

+**/

+EFI_STATUS

+EFIAPI

+ChooseFile (

+  IN  EFI_DEVICE_PATH_PROTOCOL  *RootDirectory,

+  IN  CHAR16                    *FileType,  OPTIONAL

+  IN  CHOOSE_HANDLER            ChooseHandler,  OPTIONAL

+  OUT EFI_DEVICE_PATH_PROTOCOL  **File  OPTIONAL

+  )

+{

+  EFI_FILE_HANDLE                   FileHandle;

+  EFI_STATUS                        Status;

+  UINT16                            *FileName;

+  EFI_HANDLE                        DeviceHandle;

+

+  if ((ChooseHandler == NULL) && (File == NULL)) {

+    return EFI_INVALID_PARAMETER;

+  }

+

+  FileName = NULL;

+

+  gFileExplorerPrivate.RetDevicePath = NULL;

+  gFileExplorerPrivate.ChooseHandler = ChooseHandler;

+  if (FileType != NULL) {

+    gFileExplorerPrivate.FileType = AllocateCopyPool (StrSize (FileType), FileType);

+    LibToLowerString(gFileExplorerPrivate.FileType);

+  } else {

+    gFileExplorerPrivate.FileType = NULL;

+  }

+

+  if (RootDirectory == NULL) {

+    Status = LibFindFileSystem();

+  } else {

+    Status = LibGetFileHandleFromDevicePath(RootDirectory, &FileHandle, &FileName, &DeviceHandle);

+    if (EFI_ERROR (Status)) {

+      goto Done;

+    }

+

+    Status = LibFindFiles (FileHandle, FileName, DeviceHandle);

+  }

+  if (EFI_ERROR (Status)) {

+    goto Done;

+  }

+

+  LibUpdateFileExplorePage();

+

+  gFileExplorerPrivate.FormBrowser2->SendForm (

+                         gFileExplorerPrivate.FormBrowser2,

+                         &gFileExplorerPrivate.FeHiiHandle,

+                         1,

+                         &FileExplorerGuid,

+                         0,

+                         NULL,

+                         NULL

+                         );

+

+Done:

+  if ((Status == EFI_SUCCESS) && (File != NULL)) {

+    *File  = gFileExplorerPrivate.RetDevicePath;

+  } else if (gFileExplorerPrivate.RetDevicePath != NULL) {

+    FreePool (gFileExplorerPrivate.RetDevicePath);

+  }

+

+  if (gFileExplorerPrivate.FileType != NULL) {

+    FreePool (gFileExplorerPrivate.FileType);

+  }

+

+  LibFreeMenu (gFileExplorerPrivate.FsOptionMenu);

+

+  if (FileName != NULL) {

+    FreePool (FileName);

+  }

+

+  return Status;

+}

+

+/**

+

+  Install Boot Manager Menu driver.

+

+  @param ImageHandle     The image handle.

+  @param SystemTable     The system table.

+

+  @retval  EFI_SUCEESS  Install File explorer library success.

+

+**/

+EFI_STATUS

+EFIAPI

+FileExplorerLibConstructor (

+  IN EFI_HANDLE                            ImageHandle,

+  IN EFI_SYSTEM_TABLE                      *SystemTable

+  )

+{

+  EFI_STATUS                     Status;

+

+  gHiiVendorDevicePath = (HII_VENDOR_DEVICE_PATH*) DuplicateDevicePath ((EFI_DEVICE_PATH_PROTOCOL*)&FeHiiVendorDevicePath);

+  ASSERT (gHiiVendorDevicePath != NULL);

+  CopyGuid (&gHiiVendorDevicePath->VendorDevicePath.Guid, &gEfiCallerIdGuid);

+

+  //

+  // Install Device Path Protocol and Config Access protocol to driver handle

+  //

+  Status = gBS->InstallMultipleProtocolInterfaces (

+                  &gFileExplorerPrivate.FeDriverHandle,

+                  &gEfiDevicePathProtocolGuid,

+                  gHiiVendorDevicePath,

+                  &gEfiHiiConfigAccessProtocolGuid,

+                  &gFileExplorerPrivate.FeConfigAccess,

+                  NULL

+                  );

+  ASSERT_EFI_ERROR (Status);

+

+  //

+  // Post our File Explorer VFR binary to the HII database.

+  //

+  gFileExplorerPrivate.FeHiiHandle = HiiAddPackages (

+                                   &FileExplorerGuid,

+                                   gFileExplorerPrivate.FeDriverHandle,

+                                   FileExplorerVfrBin,

+                                   FileExplorerLibStrings,

+                                   NULL

+                                   );

+  ASSERT (gFileExplorerPrivate.FeHiiHandle != NULL);

+

+  //

+  // Locate Formbrowser2 protocol

+  //

+  Status = gBS->LocateProtocol (&gEfiFormBrowser2ProtocolGuid, NULL, (VOID **) &gFileExplorerPrivate.FormBrowser2);

+  ASSERT_EFI_ERROR (Status);

+    

+  InitializeListHead (&gFileExplorerPrivate.FsOptionMenu->Head);

+

+  return EFI_SUCCESS;

+}

+

+/**

+  Unloads the application and its installed protocol.

+

+  @param[in]  ImageHandle       Handle that identifies the image to be unloaded.

+  @param[in]  SystemTable       The system table.

+

+  @retval EFI_SUCCESS           The image has been unloaded.

+**/

+EFI_STATUS

+EFIAPI

+FileExplorerLibDestructor (

+  IN EFI_HANDLE                            ImageHandle,

+  IN EFI_SYSTEM_TABLE                      *SystemTable

+  )

+{

+  EFI_STATUS    Status;

+

+  ASSERT (gHiiVendorDevicePath != NULL);

+

+  Status = gBS->UninstallMultipleProtocolInterfaces (

+                  gFileExplorerPrivate.FeDriverHandle,

+                  &gEfiDevicePathProtocolGuid,

+                  gHiiVendorDevicePath,

+                  &gEfiHiiConfigAccessProtocolGuid,

+                  &gFileExplorerPrivate.FeConfigAccess,

+                  NULL

+                  );

+  ASSERT_EFI_ERROR (Status);

+  

+  HiiRemovePackages (gFileExplorerPrivate.FeHiiHandle);

+

+  FreePool (gHiiVendorDevicePath);

+

+  return EFI_SUCCESS;

+}

+

diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.h b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.h
index 4c27ea1d9d..fab20523ad 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FileExplorer.h
+++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorer.h
@@ -1,239 +1,239 @@
-/** @file
-   File explorer lib.
-
-Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials                          
-are licensed and made available under the terms and conditions of the BSD License         
-which accompanies this distribution.  The full text of the license may be found at        
-http://opensource.org/licenses/bsd-license.php                                            
-                                                                                          
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
-**/
-
-#ifndef _FILE_EXPLORER_H_
-#define _FILE_EXPLORER_H_
-
-#include <PiDxe.h>
-#include <Guid/FileSystemVolumeLabelInfo.h>
-#include <Guid/FileInfo.h>
-#include <Guid/MdeModuleHii.h>
-
-#include <Protocol/HiiConfigAccess.h>
-#include <Protocol/DevicePath.h>
-#include <Protocol/SimpleFileSystem.h>
-#include <Protocol/DevicePathToText.h>
-#include <Protocol/LoadFile.h>
-#include <Protocol/FormBrowser2.h>
-
-#include <Library/DebugLib.h>
-#include <Library/BaseMemoryLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/MemoryAllocationLib.h>
-#include <Library/BaseLib.h>
-#include <Library/UefiLib.h>
-#include <Library/DevicePathLib.h>
-#include <Library/FileExplorerLib.h>
-#include <Library/HiiLib.h>
-#include <Library/PrintLib.h>
-
-#include "FormGuid.h"
-
-#define FILE_EXPLORER_CALLBACK_DATA_SIGNATURE     SIGNATURE_32 ('f', 'e', 'c', 'k')
-
-
-#pragma pack(1)
-
-///
-/// HII specific Vendor Device Path definition.
-///
-typedef struct {
-  VENDOR_DEVICE_PATH             VendorDevicePath;
-  EFI_DEVICE_PATH_PROTOCOL       End;
-} HII_VENDOR_DEVICE_PATH;
-
-typedef struct {
-  EFI_HANDLE                        DeviceHandle;
-  EFI_DEVICE_PATH_PROTOCOL          *DevicePath;
-  EFI_FILE_HANDLE                   FileHandle;
-  UINT16                            *FileName;
-
-  BOOLEAN                           IsRoot;
-  BOOLEAN                           IsDir;
-} FILE_CONTEXT;
-
-typedef struct {
-  UINTN           Signature;
-  LIST_ENTRY      Link;
-  UINT16          *DisplayString;
-  UINT16          *HelpString;
-  EFI_STRING_ID   DisplayStringToken;
-  EFI_STRING_ID   HelpStringToken;
-  VOID            *VariableContext;
-} MENU_ENTRY;
-
-typedef struct {
-  UINTN           Signature;
-  LIST_ENTRY      Head;
-  UINTN           MenuNumber;
-  BOOLEAN         Used;
-} MENU_OPTION;
-
-typedef struct {
-  //
-  // Shared callback data.
-  //
-  UINTN                          Signature;
-
-  //
-  // File explorer formset callback data.
-  //
-  EFI_HII_HANDLE                 FeHiiHandle;
-  EFI_HANDLE                     FeDriverHandle;
-  EFI_HII_CONFIG_ACCESS_PROTOCOL FeConfigAccess;
-  EFI_FORM_BROWSER2_PROTOCOL     *FormBrowser2;
-  MENU_OPTION                    *FsOptionMenu;
-  CHAR16                         *FileType;
-  CHOOSE_HANDLER                 ChooseHandler;
-  EFI_DEVICE_PATH_PROTOCOL       *RetDevicePath;
-
-} FILE_EXPLORER_CALLBACK_DATA;
-
-#define FILE_EXPLORER_PRIVATE_FROM_THIS(a)  CR (a, FILE_EXPLORER_CALLBACK_DATA, FeConfigAccess, FILE_EXPLORER_CALLBACK_DATA_SIGNATURE)
-
-#pragma pack()
-
-extern UINT8    FileExplorerVfrBin[];
-
-#define MENU_OPTION_SIGNATURE      SIGNATURE_32 ('m', 'e', 'n', 'u')
-#define MENU_ENTRY_SIGNATURE       SIGNATURE_32 ('e', 'n', 't', 'r')
-
-///
-/// Define the maximum characters that will be accepted.
-///
-#define MAX_CHAR                480
-#define FILE_OPTION_OFFSET      0x8000
-#define FILE_OPTION_MASK        0x7FFF
-
-
-/**
-  This function processes the results of changes in configuration.
-  When user select a interactive opcode, this callback will be triggered.
-  Based on the Question(QuestionId) that triggers the callback, the corresponding
-  actions is performed. It handles:
-
-  1) the addition of boot option.
-  2) the addition of driver option.
-  3) exit from file browser
-  4) update of file content if a dir is selected.
-  5) boot the file if a file is selected in "boot from file"
-
-
-  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Action          Specifies the type of action taken by the browser.
-  @param QuestionId      A unique value which is sent to the original exporting driver
-                         so that it can identify the type of data to expect.
-  @param Type            The type of value for the question.
-  @param Value           A pointer to the data being sent to the original exporting driver.
-  @param ActionRequest   On return, points to the action requested by the callback function.
-
-  @retval  EFI_SUCCESS           The callback successfully handled the action.
-  @retval  EFI_OUT_OF_RESOURCES  Not enough storage is available to hold the variable and its data.
-  @retval  EFI_DEVICE_ERROR      The variable could not be saved.
-  @retval  EFI_UNSUPPORTED       The specified Action is not supported by the callback.
-
-**/
-EFI_STATUS
-EFIAPI
-LibCallback (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  EFI_BROWSER_ACTION                     Action,
-  IN  EFI_QUESTION_ID                        QuestionId,
-  IN  UINT8                                  Type,
-  IN  EFI_IFR_TYPE_VALUE                     *Value,
-  OUT EFI_BROWSER_ACTION_REQUEST             *ActionRequest
-  );
-
-
-/**
-  This function allows a caller to extract the current configuration for one
-  or more named elements from the target driver.
-
-
-  @param This            - Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Request         - A null-terminated Unicode string in <ConfigRequest> format.
-  @param Progress        - On return, points to a character in the Request string.
-                         Points to the string's null terminator if request was successful.
-                         Points to the most recent '&' before the first failing name/value
-                         pair (or the beginning of the string if the failure is in the
-                         first name/value pair) if the request was not successful.
-  @param Results         - A null-terminated Unicode string in <ConfigAltResp> format which
-                         has all values filled in for the names in the Request string.
-                         String to be allocated by the called function.
-
-  @retval  EFI_SUCCESS            The Results is filled with the requested values.
-  @retval  EFI_OUT_OF_RESOURCES   Not enough memory to store the results.
-  @retval  EFI_INVALID_PARAMETER  Request is NULL, illegal syntax, or unknown name.
-  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.
-
-**/
-EFI_STATUS
-EFIAPI
-LibExtractConfig (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  CONST EFI_STRING                       Request,
-  OUT EFI_STRING                             *Progress,
-  OUT EFI_STRING                             *Results
-  );
-
-/**
-  This function processes the results of changes in configuration.
-
-
-  @param This            - Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
-  @param Configuration   - A null-terminated Unicode string in <ConfigResp> format.
-  @param Progress        - A pointer to a string filled in with the offset of the most
-                         recent '&' before the first failing name/value pair (or the
-                         beginning of the string if the failure is in the first
-                         name/value pair) or the terminating NULL if all was successful.
-
-  @retval  EFI_SUCCESS            The Results is processed successfully.
-  @retval  EFI_INVALID_PARAMETER  Configuration is NULL.
-  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.
-
-**/
-EFI_STATUS
-EFIAPI
-LibRouteConfig (
-  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,
-  IN  CONST EFI_STRING                       Configuration,
-  OUT EFI_STRING                             *Progress
-  );
-
-/**
-  Update the file explower page with the refershed file system.
-
-  @param KeyValue        Key value to identify the type of data to expect.
-
-  @retval  EFI_SUCCESS   Update the file explorer form success.
-  @retval  other errors  Error occur when parse one directory.
-
-**/
-EFI_STATUS
-LibUpdateFileExplorer (
-  IN UINT16                       KeyValue
-  );
-  
-  
-/**
-  Get the device path info saved in the menu structure.
-
-  @param KeyValue        Key value to identify the type of data to expect.
-
-**/
-VOID
-LibGetDevicePath (
-  IN UINT16                       KeyValue
-  );
-
-#endif 
+/** @file

+   File explorer lib.

+

+Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>

+This program and the accompanying materials                          

+are licensed and made available under the terms and conditions of the BSD License         

+which accompanies this distribution.  The full text of the license may be found at        

+http://opensource.org/licenses/bsd-license.php                                            

+                                                                                          

+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     

+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

+**/

+

+#ifndef _FILE_EXPLORER_H_

+#define _FILE_EXPLORER_H_

+

+#include <PiDxe.h>

+#include <Guid/FileSystemVolumeLabelInfo.h>

+#include <Guid/FileInfo.h>

+#include <Guid/MdeModuleHii.h>

+

+#include <Protocol/HiiConfigAccess.h>

+#include <Protocol/DevicePath.h>

+#include <Protocol/SimpleFileSystem.h>

+#include <Protocol/DevicePathToText.h>

+#include <Protocol/LoadFile.h>

+#include <Protocol/FormBrowser2.h>

+

+#include <Library/DebugLib.h>

+#include <Library/BaseMemoryLib.h>

+#include <Library/UefiBootServicesTableLib.h>

+#include <Library/MemoryAllocationLib.h>

+#include <Library/BaseLib.h>

+#include <Library/UefiLib.h>

+#include <Library/DevicePathLib.h>

+#include <Library/FileExplorerLib.h>

+#include <Library/HiiLib.h>

+#include <Library/PrintLib.h>

+

+#include "FormGuid.h"

+

+#define FILE_EXPLORER_CALLBACK_DATA_SIGNATURE     SIGNATURE_32 ('f', 'e', 'c', 'k')

+

+

+#pragma pack(1)

+

+///

+/// HII specific Vendor Device Path definition.

+///

+typedef struct {

+  VENDOR_DEVICE_PATH             VendorDevicePath;

+  EFI_DEVICE_PATH_PROTOCOL       End;

+} HII_VENDOR_DEVICE_PATH;

+

+typedef struct {

+  EFI_HANDLE                        DeviceHandle;

+  EFI_DEVICE_PATH_PROTOCOL          *DevicePath;

+  EFI_FILE_HANDLE                   FileHandle;

+  UINT16                            *FileName;

+

+  BOOLEAN                           IsRoot;

+  BOOLEAN                           IsDir;

+} FILE_CONTEXT;

+

+typedef struct {

+  UINTN           Signature;

+  LIST_ENTRY      Link;

+  UINT16          *DisplayString;

+  UINT16          *HelpString;

+  EFI_STRING_ID   DisplayStringToken;

+  EFI_STRING_ID   HelpStringToken;

+  VOID            *VariableContext;

+} MENU_ENTRY;

+

+typedef struct {

+  UINTN           Signature;

+  LIST_ENTRY      Head;

+  UINTN           MenuNumber;

+  BOOLEAN         Used;

+} MENU_OPTION;

+

+typedef struct {

+  //

+  // Shared callback data.

+  //

+  UINTN                          Signature;

+

+  //

+  // File explorer formset callback data.

+  //

+  EFI_HII_HANDLE                 FeHiiHandle;

+  EFI_HANDLE                     FeDriverHandle;

+  EFI_HII_CONFIG_ACCESS_PROTOCOL FeConfigAccess;

+  EFI_FORM_BROWSER2_PROTOCOL     *FormBrowser2;

+  MENU_OPTION                    *FsOptionMenu;

+  CHAR16                         *FileType;

+  CHOOSE_HANDLER                 ChooseHandler;

+  EFI_DEVICE_PATH_PROTOCOL       *RetDevicePath;

+

+} FILE_EXPLORER_CALLBACK_DATA;

+

+#define FILE_EXPLORER_PRIVATE_FROM_THIS(a)  CR (a, FILE_EXPLORER_CALLBACK_DATA, FeConfigAccess, FILE_EXPLORER_CALLBACK_DATA_SIGNATURE)

+

+#pragma pack()

+

+extern UINT8    FileExplorerVfrBin[];

+

+#define MENU_OPTION_SIGNATURE      SIGNATURE_32 ('m', 'e', 'n', 'u')

+#define MENU_ENTRY_SIGNATURE       SIGNATURE_32 ('e', 'n', 't', 'r')

+

+///

+/// Define the maximum characters that will be accepted.

+///

+#define MAX_CHAR                480

+#define FILE_OPTION_OFFSET      0x8000

+#define FILE_OPTION_MASK        0x7FFF

+

+

+/**

+  This function processes the results of changes in configuration.

+  When user select a interactive opcode, this callback will be triggered.

+  Based on the Question(QuestionId) that triggers the callback, the corresponding

+  actions is performed. It handles:

+

+  1) the addition of boot option.

+  2) the addition of driver option.

+  3) exit from file browser

+  4) update of file content if a dir is selected.

+  5) boot the file if a file is selected in "boot from file"

+

+

+  @param This            Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Action          Specifies the type of action taken by the browser.

+  @param QuestionId      A unique value which is sent to the original exporting driver

+                         so that it can identify the type of data to expect.

+  @param Type            The type of value for the question.

+  @param Value           A pointer to the data being sent to the original exporting driver.

+  @param ActionRequest   On return, points to the action requested by the callback function.

+

+  @retval  EFI_SUCCESS           The callback successfully handled the action.

+  @retval  EFI_OUT_OF_RESOURCES  Not enough storage is available to hold the variable and its data.

+  @retval  EFI_DEVICE_ERROR      The variable could not be saved.

+  @retval  EFI_UNSUPPORTED       The specified Action is not supported by the callback.

+

+**/

+EFI_STATUS

+EFIAPI

+LibCallback (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  EFI_BROWSER_ACTION                     Action,

+  IN  EFI_QUESTION_ID                        QuestionId,

+  IN  UINT8                                  Type,

+  IN  EFI_IFR_TYPE_VALUE                     *Value,

+  OUT EFI_BROWSER_ACTION_REQUEST             *ActionRequest

+  );

+

+

+/**

+  This function allows a caller to extract the current configuration for one

+  or more named elements from the target driver.

+

+

+  @param This            - Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Request         - A null-terminated Unicode string in <ConfigRequest> format.

+  @param Progress        - On return, points to a character in the Request string.

+                         Points to the string's null terminator if request was successful.

+                         Points to the most recent '&' before the first failing name/value

+                         pair (or the beginning of the string if the failure is in the

+                         first name/value pair) if the request was not successful.

+  @param Results         - A null-terminated Unicode string in <ConfigAltResp> format which

+                         has all values filled in for the names in the Request string.

+                         String to be allocated by the called function.

+

+  @retval  EFI_SUCCESS            The Results is filled with the requested values.

+  @retval  EFI_OUT_OF_RESOURCES   Not enough memory to store the results.

+  @retval  EFI_INVALID_PARAMETER  Request is NULL, illegal syntax, or unknown name.

+  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.

+

+**/

+EFI_STATUS

+EFIAPI

+LibExtractConfig (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  CONST EFI_STRING                       Request,

+  OUT EFI_STRING                             *Progress,

+  OUT EFI_STRING                             *Results

+  );

+

+/**

+  This function processes the results of changes in configuration.

+

+

+  @param This            - Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.

+  @param Configuration   - A null-terminated Unicode string in <ConfigResp> format.

+  @param Progress        - A pointer to a string filled in with the offset of the most

+                         recent '&' before the first failing name/value pair (or the

+                         beginning of the string if the failure is in the first

+                         name/value pair) or the terminating NULL if all was successful.

+

+  @retval  EFI_SUCCESS            The Results is processed successfully.

+  @retval  EFI_INVALID_PARAMETER  Configuration is NULL.

+  @retval  EFI_NOT_FOUND          Routing data doesn't match any storage in this driver.

+

+**/

+EFI_STATUS

+EFIAPI

+LibRouteConfig (

+  IN  CONST EFI_HII_CONFIG_ACCESS_PROTOCOL   *This,

+  IN  CONST EFI_STRING                       Configuration,

+  OUT EFI_STRING                             *Progress

+  );

+

+/**

+  Update the file explower page with the refershed file system.

+

+  @param KeyValue        Key value to identify the type of data to expect.

+

+  @retval  EFI_SUCCESS   Update the file explorer form success.

+  @retval  other errors  Error occur when parse one directory.

+

+**/

+EFI_STATUS

+LibUpdateFileExplorer (

+  IN UINT16                       KeyValue

+  );

+  

+  

+/**

+  Get the device path info saved in the menu structure.

+

+  @param KeyValue        Key value to identify the type of data to expect.

+

+**/

+VOID

+LibGetDevicePath (

+  IN UINT16                       KeyValue

+  );

+

+#endif 

diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf b/MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
index b587bf5924..89c75f9416 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
+++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorerLib.inf
@@ -1,59 +1,59 @@
-## @file
-#  library defines a set of interfaces for how to do file explorer.
-#  
-#  Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
-#  This program and the accompanying materials are licensed and made available under
-#  the terms and conditions of the BSD License that accompanies this distribution.
-#  The full text of the license may be found at
-#  http://opensource.org/licenses/bsd-license.php.
-#  
-#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-#  
-##
-[Defines]
-  INF_VERSION                    = 0x00010005
-  BASE_NAME                      = FileExplorerLib
-  FILE_GUID                      = 4FC9C630-0F90-4053-8F13-264CBD22FC58
-  MODULE_TYPE                    = DXE_DRIVER
-  VERSION_STRING                 = 1.0
-  LIBRARY_CLASS                  = FileExplorerLib|DXE_DRIVER UEFI_APPLICATION
-  CONSTRUCTOR                    = FileExplorerLibConstructor
-  DESTRUCTOR                     = FileExplorerLibDestructor
-
-#
-# The following information is for reference only and not required by the build tools.
-#
-#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC
-#
-
-[Sources]
-  FileExplorer.h
-  FileExplorerVfr.vfr
-  FileExplorerString.uni
-  FileExplorer.c
-  FormGuid.h
-
-[Packages]
-  MdePkg/MdePkg.dec
-  MdeModulePkg/MdeModulePkg.dec
-
-[LibraryClasses]
-  DevicePathLib
-  BaseLib
-  MemoryAllocationLib
-  UefiBootServicesTableLib
-  BaseMemoryLib
-  DebugLib
-  HiiLib
-
-[Guids]
-  gEfiFileSystemVolumeLabelInfoIdGuid           ## CONSUMES ## GUID (Indicate the information type is volume)
-  gEfiIfrTianoGuid                              ## CONSUMES ## GUID (Extended IFR Guid Opcode)
- 
-[Protocols]
-  gEfiSimpleFileSystemProtocolGuid              ## CONSUMES
-  gEfiLoadFileProtocolGuid                      ## CONSUMES
-  gEfiHiiConfigAccessProtocolGuid               ## CONSUMES
-  gEfiFormBrowser2ProtocolGuid                  ## CONSUMES
+## @file

+#  library defines a set of interfaces for how to do file explorer.

+#  

+#  Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>

+#  This program and the accompanying materials are licensed and made available under

+#  the terms and conditions of the BSD License that accompanies this distribution.

+#  The full text of the license may be found at

+#  http://opensource.org/licenses/bsd-license.php.

+#  

+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+#  

+##

+[Defines]

+  INF_VERSION                    = 0x00010005

+  BASE_NAME                      = FileExplorerLib

+  FILE_GUID                      = 4FC9C630-0F90-4053-8F13-264CBD22FC58

+  MODULE_TYPE                    = DXE_DRIVER

+  VERSION_STRING                 = 1.0

+  LIBRARY_CLASS                  = FileExplorerLib|DXE_DRIVER UEFI_APPLICATION

+  CONSTRUCTOR                    = FileExplorerLibConstructor

+  DESTRUCTOR                     = FileExplorerLibDestructor

+

+#

+# The following information is for reference only and not required by the build tools.

+#

+#  VALID_ARCHITECTURES           = IA32 X64 IPF EBC

+#

+

+[Sources]

+  FileExplorer.h

+  FileExplorerVfr.vfr

+  FileExplorerString.uni

+  FileExplorer.c

+  FormGuid.h

+

+[Packages]

+  MdePkg/MdePkg.dec

+  MdeModulePkg/MdeModulePkg.dec

+

+[LibraryClasses]

+  DevicePathLib

+  BaseLib

+  MemoryAllocationLib

+  UefiBootServicesTableLib

+  BaseMemoryLib

+  DebugLib

+  HiiLib

+

+[Guids]

+  gEfiFileSystemVolumeLabelInfoIdGuid           ## CONSUMES ## GUID (Indicate the information type is volume)

+  gEfiIfrTianoGuid                              ## CONSUMES ## GUID (Extended IFR Guid Opcode)

+ 

+[Protocols]

+  gEfiSimpleFileSystemProtocolGuid              ## CONSUMES

+  gEfiLoadFileProtocolGuid                      ## CONSUMES

+  gEfiHiiConfigAccessProtocolGuid               ## CONSUMES

+  gEfiFormBrowser2ProtocolGuid                  ## CONSUMES

   gEfiDevicePathToTextProtocolGuid              ## CONSUMES
\ No newline at end of file
diff --git a/MdeModulePkg/Library/FileExplorerLib/FileExplorerVfr.vfr b/MdeModulePkg/Library/FileExplorerLib/FileExplorerVfr.vfr
index 89dd81ad08..ef7c99c24f 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FileExplorerVfr.vfr
+++ b/MdeModulePkg/Library/FileExplorerLib/FileExplorerVfr.vfr
@@ -1,31 +1,31 @@
-///** @file
-//
-//    File Explorer Formset
-//
-//  Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
-//  This program and the accompanying materials
-//  are licensed and made available under the terms and conditions of the BSD License
-//  which accompanies this distribution.  The full text of the license may be found at
-//  http://opensource.org/licenses/bsd-license.php
-//
-//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-//
-//**/
-
-#include "FormGuid.h"
-
-formset
-  guid = EFI_FILE_EXPLORE_FORMSET_GUID,
-  title = STRING_TOKEN(STR_FILE_EXPLORER_TITLE),
-  help = STRING_TOKEN(STR_NULL_STRING),
-  classguid = EFI_FILE_EXPLORE_FORMSET_GUID,
-
-  form formid = FORM_FILE_EXPLORER_ID,
-       title = STRING_TOKEN(STR_FILE_EXPLORER_TITLE);
-
-       label FORM_FILE_EXPLORER_ID;
-       label LABEL_END;
-  endform;
-
+///** @file

+//

+//    File Explorer Formset

+//

+//  Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>

+//  This program and the accompanying materials

+//  are licensed and made available under the terms and conditions of the BSD License

+//  which accompanies this distribution.  The full text of the license may be found at

+//  http://opensource.org/licenses/bsd-license.php

+//

+//  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+//  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+//

+//**/

+

+#include "FormGuid.h"

+

+formset

+  guid = EFI_FILE_EXPLORE_FORMSET_GUID,

+  title = STRING_TOKEN(STR_FILE_EXPLORER_TITLE),

+  help = STRING_TOKEN(STR_NULL_STRING),

+  classguid = EFI_FILE_EXPLORE_FORMSET_GUID,

+

+  form formid = FORM_FILE_EXPLORER_ID,

+       title = STRING_TOKEN(STR_FILE_EXPLORER_TITLE);

+

+       label FORM_FILE_EXPLORER_ID;

+       label LABEL_END;

+  endform;

+

 endformset;
\ No newline at end of file
diff --git a/MdeModulePkg/Library/FileExplorerLib/FormGuid.h b/MdeModulePkg/Library/FileExplorerLib/FormGuid.h
index 6c23c6c5e4..011ae228c9 100644
--- a/MdeModulePkg/Library/FileExplorerLib/FormGuid.h
+++ b/MdeModulePkg/Library/FileExplorerLib/FormGuid.h
@@ -1,29 +1,29 @@
-/** @file
-Formset guids, form id and VarStore data structure for File explorer library.
-
-Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials are licensed and made available under
-the terms and conditions of the BSD License that accompanies this distribution.
-The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php.
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-
-#ifndef _FILE_EXPLORER_FORM_GUID_H_
-#define _FILE_EXPLORER_FORM_GUID_H_
-
-
-#define EFI_FILE_EXPLORE_FORMSET_GUID \
-  { \
-  0x1f2d63e1, 0xfebd, 0x4dc7, {0x9c, 0xc5, 0xba, 0x2b, 0x1c, 0xef, 0x9c, 0x5b} \
-  }
-
-#define FORM_FILE_EXPLORER_ID                0x1000
-#define LABEL_END                            0xffff
-
-#endif
-
+/** @file

+Formset guids, form id and VarStore data structure for File explorer library.

+

+Copyright (c) 2004 - 2015, Intel Corporation. All rights reserved.<BR>

+This program and the accompanying materials are licensed and made available under

+the terms and conditions of the BSD License that accompanies this distribution.

+The full text of the license may be found at

+http://opensource.org/licenses/bsd-license.php.

+

+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+

+

+#ifndef _FILE_EXPLORER_FORM_GUID_H_

+#define _FILE_EXPLORER_FORM_GUID_H_

+

+

+#define EFI_FILE_EXPLORE_FORMSET_GUID \

+  { \

+  0x1f2d63e1, 0xfebd, 0x4dc7, {0x9c, 0xc5, 0xba, 0x2b, 0x1c, 0xef, 0x9c, 0x5b} \

+  }

+

+#define FORM_FILE_EXPLORER_ID                0x1000

+#define LABEL_END                            0xffff

+

+#endif

+