]> code.delx.au - refind/blobdiff - refind/main.c
Removed BIOS Boot Partition detection; version 0.3.5 release.
[refind] / refind / main.c
index 058728cfa181d0f7a2675e7722d10f222c036dbe..1f574383154a95e6c3b2fd6f121bc81d07f2b518 100644 (file)
 #include "icns.h"
 #include "menu.h"
 #include "refit_call_wrapper.h"
+#include "driver_support.h"
 #include "../include/syslinux_mbr.h"
 
 // 
 // variables
 
-#define MACOSX_LOADER_PATH      L"\\System\\Library\\CoreServices\\boot.efi"
+#define MACOSX_LOADER_PATH      L"System\\Library\\CoreServices\\boot.efi"
 #if defined (EFIX64)
 #define SHELL_NAMES             L"\\EFI\\tools\\shell.efi,\\shellx64.efi"
 #elif defined (EFI32)
 #define SHELL_NAMES             L"\\EFI\\tools\\shell.efi"
 #endif
 
+// Filename patterns that identify EFI boot loaders. Note that a single case (either L"*.efi" or
+// L"*.EFI") is fine for most systems; but Gigabyte's buggy Hybrid EFI does a case-sensitive
+// comparison when it should do a case-insensitive comparison, so I'm doubling this up. It does
+// no harm on other computers, AFAIK. In theory, every case variation should be done for
+// completeness, but that's ridiculous....
+#define LOADER_MATCH_PATTERNS   L"*.efi,*.EFI"
+
+// Patterns that identify Linux kernels. Added to the loader match pattern when the
+// scan_all_linux_kernels option is set in the configuration file. Causes kernels WITHOUT
+// a ".efi" extension to be found when scanning for boot loaders.
+#define LINUX_MATCH_PATTERNS    L"vmlinuz*,bzImage*"
+
 static REFIT_MENU_ENTRY MenuEntryAbout    = { L"About rEFInd", TAG_ABOUT, 1, 0, 'A', NULL, NULL, NULL };
 static REFIT_MENU_ENTRY MenuEntryReset    = { L"Reboot Computer", TAG_REBOOT, 1, 0, 'R', NULL, NULL, NULL };
 static REFIT_MENU_ENTRY MenuEntryShutdown = { L"Shut Down Computer", TAG_SHUTDOWN, 1, 0, 'U', NULL, NULL, NULL };
@@ -72,9 +85,17 @@ static REFIT_MENU_ENTRY MenuEntryExit     = { L"Exit rEFInd", TAG_EXIT, 1, 0, 0,
 static REFIT_MENU_SCREEN MainMenu       = { L"Main Menu", NULL, 0, NULL, 0, NULL, 0, L"Automatic boot" };
 static REFIT_MENU_SCREEN AboutMenu      = { L"About", NULL, 0, NULL, 0, NULL, 0, NULL };
 
-REFIT_CONFIG GlobalConfig = { FALSE, 20, 0, 0, NULL, NULL, NULL, NULL, NULL,
+REFIT_CONFIG GlobalConfig = { FALSE, FALSE, 0, 0, 20, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
                               {TAG_SHELL, TAG_ABOUT, TAG_SHUTDOWN, TAG_REBOOT, 0, 0, 0, 0, 0 }};
 
+// Structure used to hold boot loader filenames and time stamps in
+// a linked list; used to sort entries within a directory.
+struct LOADER_LIST {
+   CHAR16              *FileName;
+   EFI_TIME            TimeStamp;
+   struct LOADER_LIST  *NextEntry;
+};
+
 //
 // misc functions
 //
@@ -83,7 +104,7 @@ static VOID AboutrEFInd(VOID)
 {
     if (AboutMenu.EntryCount == 0) {
         AboutMenu.TitleImage = BuiltinIcon(BUILTIN_ICON_FUNC_ABOUT);
-        AddMenuInfoLine(&AboutMenu, L"rEFInd Version 0.2.6.1");
+        AddMenuInfoLine(&AboutMenu, L"rEFInd Version 0.3.5");
         AddMenuInfoLine(&AboutMenu, L"");
         AddMenuInfoLine(&AboutMenu, L"Copyright (c) 2006-2010 Christoph Pfisterer");
         AddMenuInfoLine(&AboutMenu, L"Copyright (c) 2012 Roderick W. Smith");
@@ -115,7 +136,8 @@ static VOID AboutrEFInd(VOID)
 static EFI_STATUS StartEFIImageList(IN EFI_DEVICE_PATH **DevicePaths,
                                     IN CHAR16 *LoadOptions, IN CHAR16 *LoadOptionsPrefix,
                                     IN CHAR16 *ImageTitle,
-                                    OUT UINTN *ErrorInStep)
+                                    OUT UINTN *ErrorInStep,
+                                    IN BOOLEAN Verbose)
 {
     EFI_STATUS              Status, ReturnStatus;
     EFI_HANDLE              ChildImageHandle;
@@ -124,7 +146,8 @@ static EFI_STATUS StartEFIImageList(IN EFI_DEVICE_PATH **DevicePaths,
     CHAR16                  ErrorInfo[256];
     CHAR16                  *FullLoadOptions = NULL;
 
-    Print(L"Starting %s\n", ImageTitle);
+    if (Verbose)
+        Print(L"Starting %s\n", ImageTitle);
     if (ErrorInStep != NULL)
         *ErrorInStep = 0;
 
@@ -160,7 +183,8 @@ static EFI_STATUS StartEFIImageList(IN EFI_DEVICE_PATH **DevicePaths,
         // NOTE: We also include the terminating null in the length for safety.
         ChildLoadedImage->LoadOptions = (VOID *)LoadOptions;
         ChildLoadedImage->LoadOptionsSize = ((UINT32)StrLen(LoadOptions) + 1) * sizeof(CHAR16);
-        Print(L"Using load options '%s'\n", LoadOptions);
+        if (Verbose)
+            Print(L"Using load options '%s'\n", LoadOptions);
     }
 
     // close open file handles
@@ -191,13 +215,14 @@ bailout:
 static EFI_STATUS StartEFIImage(IN EFI_DEVICE_PATH *DevicePath,
                                 IN CHAR16 *LoadOptions, IN CHAR16 *LoadOptionsPrefix,
                                 IN CHAR16 *ImageTitle,
-                                OUT UINTN *ErrorInStep)
+                                OUT UINTN *ErrorInStep,
+                                IN BOOLEAN Verbose)
 {
     EFI_DEVICE_PATH *DevicePaths[2];
 
     DevicePaths[0] = DevicePath;
     DevicePaths[1] = NULL;
-    return StartEFIImageList(DevicePaths, LoadOptions, LoadOptionsPrefix, ImageTitle, ErrorInStep);
+    return StartEFIImageList(DevicePaths, LoadOptions, LoadOptionsPrefix, ImageTitle, ErrorInStep, Verbose);
 } /* static EFI_STATUS StartEFIImage() */
 
 //
@@ -210,7 +235,7 @@ static VOID StartLoader(IN LOADER_ENTRY *Entry)
 
     BeginExternalScreen(Entry->UseGraphicsMode, L"Booting OS");
     StartEFIImage(Entry->DevicePath, Entry->LoadOptions,
-                  Basename(Entry->LoaderPath), Basename(Entry->LoaderPath), &ErrorInStep);
+                  Basename(Entry->LoaderPath), Basename(Entry->LoaderPath), &ErrorInStep, TRUE);
     FinishExternalScreen();
 }
 
@@ -248,8 +273,8 @@ static CHAR16 * FindInitrd(IN CHAR16 *LoaderPath, IN REFIT_VOLUME *Volume) {
    while ((DirIterNext(&DirIter, 2, L"init*", &DirEntry)) && (InitrdName == NULL)) {
       InitrdVersion = FindNumbers(DirEntry->FileName);
       if (KernelVersion != NULL) {
-            if (StriCmp(InitrdVersion, KernelVersion) == 0)
-               InitrdName = PoolPrint(L"%s%s", Path, DirEntry->FileName);
+         if (StriCmp(InitrdVersion, KernelVersion) == 0)
+            InitrdName = PoolPrint(L"%s%s", Path, DirEntry->FileName);
       } else {
          if (InitrdVersion == NULL)
             InitrdName = PoolPrint(L"%s%s", Path, DirEntry->FileName);
@@ -271,6 +296,66 @@ LOADER_ENTRY * AddPreparedLoaderEntry(LOADER_ENTRY *Entry) {
    return(Entry);
 } // LOADER_ENTRY * AddPreparedLoaderEntry()
 
+// Creates a copy of a menu screen.
+// Returns a pointer to the copy of the menu screen.
+static REFIT_MENU_SCREEN* CopyMenuScreen(REFIT_MENU_SCREEN *Entry) {
+   REFIT_MENU_SCREEN *NewEntry;
+   UINTN i;
+
+   NewEntry = AllocateZeroPool(sizeof(REFIT_MENU_SCREEN));
+   if ((Entry != NULL) && (NewEntry != NULL)) {
+      CopyMem(NewEntry, Entry, sizeof(REFIT_MENU_SCREEN));
+      NewEntry->Title = StrDuplicate(Entry->Title);
+      NewEntry->TimeoutText = StrDuplicate(Entry->TimeoutText);
+      if (Entry->TitleImage != NULL) {
+         NewEntry->TitleImage = AllocatePool(sizeof(EG_IMAGE));
+         if (NewEntry->TitleImage != NULL)
+            CopyMem(NewEntry->TitleImage, Entry->TitleImage, sizeof(EG_IMAGE));
+      } // if
+      NewEntry->InfoLines = (CHAR16**) AllocateZeroPool(Entry->InfoLineCount * (sizeof(CHAR16*)));
+      for (i = 0; i < Entry->InfoLineCount && NewEntry->InfoLines; i++) {
+         NewEntry->InfoLines[i] = StrDuplicate(Entry->InfoLines[i]);
+      } // for
+      NewEntry->Entries = (REFIT_MENU_ENTRY**) AllocateZeroPool(Entry->EntryCount * (sizeof (REFIT_MENU_ENTRY*)));
+      for (i = 0; i < Entry->EntryCount && NewEntry->Entries; i++) {
+         AddMenuEntry(NewEntry, Entry->Entries[i]);
+      } // for
+   } // if
+   return (NewEntry);
+} // static REFIT_MENU_SCREEN* CopyMenuScreen()
+
+// Creates a copy of a menu entry. Intended to enable moving a stack-based
+// menu entry (such as the ones for the "reboot" and "exit" functions) to
+// to the heap. This enables easier deletion of the whole set of menu
+// entries when re-scanning.
+// Returns a pointer to the copy of the menu entry.
+static REFIT_MENU_ENTRY* CopyMenuEntry(REFIT_MENU_ENTRY *Entry) {
+   REFIT_MENU_ENTRY *NewEntry;
+
+   NewEntry = AllocateZeroPool(sizeof(REFIT_MENU_ENTRY));
+   if ((Entry != NULL) && (NewEntry != NULL)) {
+      CopyMem(NewEntry, Entry, sizeof(REFIT_MENU_ENTRY));
+      NewEntry->Title = StrDuplicate(Entry->Title);
+      if (Entry->BadgeImage != NULL) {
+         NewEntry->BadgeImage = AllocatePool(sizeof(EG_IMAGE));
+         if (NewEntry->BadgeImage != NULL)
+            CopyMem(NewEntry->BadgeImage, Entry->BadgeImage, sizeof(EG_IMAGE));
+      }
+      if (Entry->Image != NULL) {
+         NewEntry->Image = AllocatePool(sizeof(EG_IMAGE));
+         if (NewEntry->Image != NULL)
+            CopyMem(NewEntry->Image, Entry->Image, sizeof(EG_IMAGE));
+      }
+      if (Entry->SubScreen != NULL) {
+         NewEntry->SubScreen = CopyMenuScreen(Entry->SubScreen);
+//          NewEntry->SubScreen = AllocatePool(sizeof(REFIT_MENU_SCREEN));
+//          if (NewEntry->SubScreen != NULL)
+//             CopyMem(NewEntry->SubScreen, Entry->SubScreen, sizeof(REFIT_MENU_SCREEN));
+      }
+   } // if
+   return (NewEntry);
+} // REFIT_MENU_ENTRY* CopyMenuEntry()
+
 // Creates a new LOADER_ENTRY data structure and populates it with
 // default values from the specified Entry, or NULL values if Entry
 // is unspecified (NULL).
@@ -395,7 +480,7 @@ VOID GenerateSubScreen(LOADER_ENTRY *Entry, IN REFIT_VOLUME *Volume) {
             AddMenuEntry(SubScreen, (REFIT_MENU_ENTRY *)SubEntry);
          }
 #endif
-      
+
          SubEntry = InitializeLoaderEntry(Entry);
          if (SubEntry != NULL) {
             SubEntry->me.Title        = L"Boot Mac OS X in single user mode";
@@ -539,7 +624,7 @@ VOID SetLoaderDefaults(LOADER_ENTRY *Entry, CHAR16 *LoaderPath, IN REFIT_VOLUME
 
    // locate a custom icon for the loader
    StrCpy(IconFileName, LoaderPath);
-   ReplaceExtension(IconFileName, L".icns");
+   ReplaceEfiExtension(IconFileName, L".icns");
    if (FileExists(Volume->RootDir, IconFileName)) {
       Entry->me.Image = LoadIcns(Volume->RootDir, IconFileName, 128);
    } else if ((StrLen(PathOnly) == 0) && (Volume->VolIconImage != NULL)) {
@@ -579,6 +664,9 @@ VOID SetLoaderDefaults(LOADER_ENTRY *Entry, CHAR16 *LoaderPath, IN REFIT_VOLUME
       Entry->OSType = 'E';
       if (ShortcutLetter == 0)
          ShortcutLetter = 'L';
+   } else if (StriSubCmp(L"grub", FileName)) {
+      Entry->OSType = 'G';
+      ShortcutLetter = 'G';
    } else if (StriCmp(FileName, L"cdboot.efi") == 0 ||
               StriCmp(FileName, L"bootmgr.efi") == 0 ||
               StriCmp(FileName, L"Bootmgfw.efi") == 0) {
@@ -609,8 +697,8 @@ LOADER_ENTRY * AddLoaderEntry(IN CHAR16 *LoaderPath, IN CHAR16 *LoaderTitle, IN
    CleanUpPathNameSlashes(LoaderPath);
    Entry = InitializeLoaderEntry(NULL);
    if (Entry != NULL) {
-      Entry->Title = StrDuplicate(LoaderTitle);
-      Entry->me.Title = PoolPrint(L"Boot %s from %s", (LoaderTitle != NULL) ? LoaderTitle : LoaderPath + 1, Volume->VolName);
+      Entry->Title = StrDuplicate((LoaderTitle != NULL) ? LoaderTitle : LoaderPath);
+      Entry->me.Title = PoolPrint(L"Boot %s from %s", (LoaderTitle != NULL) ? LoaderTitle : LoaderPath, Volume->VolName);
       Entry->me.Row = 0;
       Entry->me.BadgeImage = Volume->VolBadgeImage;
       Entry->LoaderPath = StrDuplicate(LoaderPath);
@@ -624,32 +712,85 @@ LOADER_ENTRY * AddLoaderEntry(IN CHAR16 *LoaderPath, IN CHAR16 *LoaderTitle, IN
    return(Entry);
 } // LOADER_ENTRY * AddLoaderEntry()
 
+// Returns -1 if (Time1 < Time2), +1 if (Time1 > Time2), or 0 if
+// (Time1 == Time2). Precision is only to the nearest second; since
+// this is used for sorting boot loader entries, differences smaller
+// than this are likely to be meaningless (and unlikely!).
+INTN TimeComp(EFI_TIME *Time1, EFI_TIME *Time2) {
+   INT64 Time1InSeconds, Time2InSeconds;
+
+   // Following values are overestimates; I'm assuming 31 days in every month.
+   // This is fine for the purpose of this function, which has a limited
+   // purpose.
+   Time1InSeconds = Time1->Second + (Time1->Minute * 60) + (Time1->Hour * 3600) + (Time1->Day * 86400) +
+                    (Time1->Month * 2678400) + ((Time1->Year - 1998) * 32140800);
+   Time2InSeconds = Time2->Second + (Time2->Minute * 60) + (Time2->Hour * 3600) + (Time2->Day * 86400) +
+                    (Time2->Month * 2678400) + ((Time2->Year - 1998) * 32140800);
+   if (Time1InSeconds < Time2InSeconds)
+      return (-1);
+   else if (Time1InSeconds > Time2InSeconds)
+      return (1);
+
+   return 0;
+} // INTN TimeComp()
+
+// Adds a loader list element, keeping it sorted by date. Returns the new
+// first element (the one with the most recent date).
+static struct LOADER_LIST * AddLoaderListEntry(struct LOADER_LIST *LoaderList, struct LOADER_LIST *NewEntry) {
+   struct LOADER_LIST *LatestEntry, *CurrentEntry, *PrevEntry = NULL;
+
+   LatestEntry = CurrentEntry = LoaderList;
+   if (LoaderList == NULL) {
+      LatestEntry = NewEntry;
+   } else {
+      while ((CurrentEntry != NULL) && (TimeComp(&(NewEntry->TimeStamp), &(CurrentEntry->TimeStamp)) < 0)) {
+         PrevEntry = CurrentEntry;
+         CurrentEntry = CurrentEntry->NextEntry;
+      } // while
+      NewEntry->NextEntry = CurrentEntry;
+      if (PrevEntry == NULL) {
+         LatestEntry = NewEntry;
+      } else {
+         PrevEntry->NextEntry = NewEntry;
+      } // if/else
+   } // if/else
+   return (LatestEntry);
+} // static VOID AddLoaderListEntry()
+
+// Delete the LOADER_LIST linked list
+static VOID CleanUpLoaderList(struct LOADER_LIST *LoaderList) {
+   struct LOADER_LIST *Temp;
+
+   while (LoaderList != NULL) {
+      Temp = LoaderList;
+      LoaderList = LoaderList->NextEntry;
+      FreePool(Temp->FileName);
+      FreePool(Temp);
+   } // while
+} // static VOID CleanUpLoaderList()
+
 // Scan an individual directory for EFI boot loader files and, if found,
-// add them to the list.
-static VOID ScanLoaderDir(IN REFIT_VOLUME *Volume, IN CHAR16 *Path)
+// add them to the list. Sorts the entries within the loader directory
+// so that the most recent one appears first in the list.
+static VOID ScanLoaderDir(IN REFIT_VOLUME *Volume, IN CHAR16 *Path, IN CHAR16 *Pattern)
 {
     EFI_STATUS              Status;
     REFIT_DIR_ITER          DirIter;
     EFI_FILE_INFO           *DirEntry;
-    CHAR16                  FileName[256], *SelfPath;
-    UINTN                   i = 0;
-
-    // Skip past leading slashes, which are sometimes (but not always) included
-    // in SelfDirPath, to get a path that's known to never include this feature.
-    while ((SelfDirPath != NULL) && (SelfDirPath[i] == L'\\')) {
-       i++;
-    }
-    SelfPath = &SelfDirPath[i]; // NOTE: *DO NOT* call FreePool() on SelfPath!!!
+    CHAR16                  FileName[256], *Extension;
+    struct LOADER_LIST      *LoaderList = NULL, *NewLoader;
 
-    if (!SelfPath || !Path || ((StriCmp(Path, SelfPath) == 0) && Volume != SelfVolume) ||
-        (StriCmp(Path, SelfPath) != 0)) {
+    if (!SelfDirPath || !Path || ((StriCmp(Path, SelfDirPath) == 0) && Volume != SelfVolume) ||
+        (StriCmp(Path, SelfDirPath) != 0)) {
        // look through contents of the directory
        DirIterOpen(Volume->RootDir, Path, &DirIter);
-       while (DirIterNext(&DirIter, 2, L"*.efi", &DirEntry)) {
+       while (DirIterNext(&DirIter, 2, Pattern, &DirEntry)) {
+          Extension = FindExtension(DirEntry->FileName);
           if (DirEntry->FileName[0] == '.' ||
               StriCmp(DirEntry->FileName, L"TextMode.efi") == 0 ||
               StriCmp(DirEntry->FileName, L"ebounce.efi") == 0 ||
               StriCmp(DirEntry->FileName, L"GraphicsConsole.efi") == 0 ||
+              StriCmp(Extension, L".icns") == 0 ||
               StriSubCmp(L"shell", DirEntry->FileName))
                 continue;   // skip this
 
@@ -657,8 +798,21 @@ static VOID ScanLoaderDir(IN REFIT_VOLUME *Volume, IN CHAR16 *Path)
                 SPrint(FileName, 255, L"\\%s\\%s", Path, DirEntry->FileName);
           else
                 SPrint(FileName, 255, L"\\%s", DirEntry->FileName);
-          AddLoaderEntry(FileName, NULL, Volume);
-       }
+          CleanUpPathNameSlashes(FileName);
+          NewLoader = AllocateZeroPool(sizeof(struct LOADER_LIST));
+          if (NewLoader != NULL) {
+             NewLoader->FileName = StrDuplicate(FileName);
+             NewLoader->TimeStamp = DirEntry->ModificationTime;
+             LoaderList = AddLoaderListEntry(LoaderList, NewLoader);
+          } // if
+          FreePool(Extension);
+       } // while
+       NewLoader = LoaderList;
+       while (NewLoader != NULL) {
+          AddLoaderEntry(NewLoader->FileName, NULL, Volume);
+          NewLoader = NewLoader->NextEntry;
+       } // while
+       CleanUpLoaderList(LoaderList);
        Status = DirIterClose(&DirIter);
        if (Status != EFI_NOT_FOUND) {
           if (Path)
@@ -674,9 +828,13 @@ static VOID ScanEfiFiles(REFIT_VOLUME *Volume) {
    EFI_STATUS              Status;
    REFIT_DIR_ITER          EfiDirIter;
    EFI_FILE_INFO           *EfiDirEntry;
-   CHAR16                  FileName[256], *Directory;
+   CHAR16                  FileName[256], *Directory, *MatchPatterns;
    UINTN                   i, Length;
 
+    MatchPatterns = StrDuplicate(LOADER_MATCH_PATTERNS);
+    if (GlobalConfig.ScanAllLinux)
+       MergeStrings(&MatchPatterns, LINUX_MATCH_PATTERNS, L',');
+
    if ((Volume->RootDir != NULL) && (Volume->VolName != NULL)) {
       // check for Mac OS X boot loader
       StrCpy(FileName, MACOSX_LOADER_PATH);
@@ -685,19 +843,19 @@ static VOID ScanEfiFiles(REFIT_VOLUME *Volume) {
       }
 
       // check for XOM
-      StrCpy(FileName, L"\\System\\Library\\CoreServices\\xom.efi");
+      StrCpy(FileName, L"System\\Library\\CoreServices\\xom.efi");
       if (FileExists(Volume->RootDir, FileName)) {
          AddLoaderEntry(FileName, L"Windows XP (XoM)", Volume);
       }
 
       // check for Microsoft boot loader/menu
-      StrCpy(FileName, L"\\EFI\\Microsoft\\Boot\\Bootmgfw.efi");
+      StrCpy(FileName, L"EFI\\Microsoft\\Boot\\Bootmgfw.efi");
       if (FileExists(Volume->RootDir, FileName)) {
          AddLoaderEntry(FileName, L"Microsoft EFI boot", Volume);
       }
 
       // scan the root directory for EFI executables
-      ScanLoaderDir(Volume, NULL);
+      ScanLoaderDir(Volume, L"\\", MatchPatterns);
 
       // scan subdirectories of the EFI directory (as per the standard)
       DirIterOpen(Volume->RootDir, L"EFI", &EfiDirIter);
@@ -705,7 +863,7 @@ static VOID ScanEfiFiles(REFIT_VOLUME *Volume) {
          if (StriCmp(EfiDirEntry->FileName, L"tools") == 0 || EfiDirEntry->FileName[0] == '.')
             continue;   // skip this, doesn't contain boot loaders
          SPrint(FileName, 255, L"EFI\\%s", EfiDirEntry->FileName);
-         ScanLoaderDir(Volume, FileName);
+         ScanLoaderDir(Volume, FileName, MatchPatterns);
       } // while()
       Status = DirIterClose(&EfiDirIter);
       if (Status != EFI_NOT_FOUND)
@@ -714,14 +872,10 @@ static VOID ScanEfiFiles(REFIT_VOLUME *Volume) {
       // Scan user-specified (or additional default) directories....
       i = 0;
       while ((Directory = FindCommaDelimited(GlobalConfig.AlsoScan, i++)) != NULL) {
+         CleanUpPathNameSlashes(Directory);
          Length = StrLen(Directory);
-         // Some EFI implementations won't read a directory if the path ends in
-         // a backslash, so eliminate this character, if it's present....
-         while ((Length > 0) && (Directory[Length - 1] == L'\\')) {
-            Directory[--Length] = 0;
-         } // while
          if (Length > 0)
-            ScanLoaderDir(Volume, Directory);
+            ScanLoaderDir(Volume, Directory, MatchPatterns);
          FreePool(Directory);
       } // while
    } // if
@@ -939,7 +1093,7 @@ static VOID StartLegacy(IN LEGACY_ENTRY *Entry)
 
     ExtractLegacyLoaderPaths(DiscoveredPathList, MAX_DISCOVERED_PATHS, LegacyLoaderList);
 
-    Status = StartEFIImageList(DiscoveredPathList, Entry->LoadOptions, NULL, L"legacy loader", &ErrorInStep);
+    Status = StartEFIImageList(DiscoveredPathList, Entry->LoadOptions, NULL, L"legacy loader", &ErrorInStep, TRUE);
     if (Status == EFI_NOT_FOUND) {
         if (ErrorInStep == 1) {
             Print(L"\nPlease make sure that you have the latest firmware update installed.\n");
@@ -996,7 +1150,7 @@ static LEGACY_ENTRY * AddLegacyEntry(IN CHAR16 *LoaderTitle, IN REFIT_VOLUME *Vo
     SubEntry->Volume          = Entry->Volume;
     SubEntry->LoadOptions     = Entry->LoadOptions;
     AddMenuEntry(SubScreen, (REFIT_MENU_ENTRY *)SubEntry);
-    
+
     AddMenuEntry(SubScreen, &MenuEntryReturn);
     Entry->me.SubScreen = SubScreen;
     AddMenuEntry(&MainMenu, (REFIT_MENU_ENTRY *)Entry);
@@ -1018,7 +1172,7 @@ static VOID ScanLegacyVolume(REFIT_VOLUME *Volume, UINTN VolumeIndex) {
          Volume->BlockIOOffset == 0 &&
          Volume->OSName == NULL)
          // this is a whole disk (MBR) entry; hide if we have entries for partitions
-      HideIfOthersFound = TRUE;
+         HideIfOthersFound = TRUE;
    }
    if (HideIfOthersFound) {
       // check for other bootable entries on the same disk
@@ -1081,10 +1235,10 @@ static VOID ScanLegacyExternal(VOID)
 
 static VOID StartTool(IN LOADER_ENTRY *Entry)
 {
-    BeginExternalScreen(Entry->UseGraphicsMode, Entry->me.Title + 6);  // assumes "Start <title>" as assigned below
-    StartEFIImage(Entry->DevicePath, Entry->LoadOptions, Basename(Entry->LoaderPath),
-                  Basename(Entry->LoaderPath), NULL);
-    FinishExternalScreen();
+   BeginExternalScreen(Entry->UseGraphicsMode, Entry->me.Title + 6);  // assumes "Start <title>" as assigned below
+   StartEFIImage(Entry->DevicePath, Entry->LoadOptions, Basename(Entry->LoaderPath),
+                 Basename(Entry->LoaderPath), NULL, TRUE);
+   FinishExternalScreen();
 } /* static VOID StartTool() */
 
 static LOADER_ENTRY * AddToolEntry(IN CHAR16 *LoaderPath, IN CHAR16 *LoaderTitle, IN EG_IMAGE *Image,
@@ -1107,69 +1261,50 @@ static LOADER_ENTRY * AddToolEntry(IN CHAR16 *LoaderPath, IN CHAR16 *LoaderTitle
     return Entry;
 } /* static LOADER_ENTRY * AddToolEntry() */
 
-#ifdef DEBIAN_ENABLE_EFI110
 //
 // pre-boot driver functions
 //
 
-static VOID ScanDriverDir(IN CHAR16 *Path)
+static UINTN ScanDriverDir(IN CHAR16 *Path)
 {
     EFI_STATUS              Status;
     REFIT_DIR_ITER          DirIter;
+    UINTN                   NumFound = 0;
     EFI_FILE_INFO           *DirEntry;
     CHAR16                  FileName[256];
 
+    CleanUpPathNameSlashes(Path);
     // look through contents of the directory
     DirIterOpen(SelfRootDir, Path, &DirIter);
-    while (DirIterNext(&DirIter, 2, L"*.EFI", &DirEntry)) {
+    while (DirIterNext(&DirIter, 2, LOADER_MATCH_PATTERNS, &DirEntry)) {
         if (DirEntry->FileName[0] == '.')
             continue;   // skip this
 
         SPrint(FileName, 255, L"%s\\%s", Path, DirEntry->FileName);
+        NumFound++;
         Status = StartEFIImage(FileDevicePath(SelfLoadedImage->DeviceHandle, FileName),
-                               L"", DirEntry->FileName, DirEntry->FileName, NULL);
+                               L"", DirEntry->FileName, DirEntry->FileName, NULL, FALSE);
     }
     Status = DirIterClose(&DirIter);
     if (Status != EFI_NOT_FOUND) {
         SPrint(FileName, 255, L"while scanning the %s directory", Path);
         CheckError(Status, FileName);
     }
+    return (NumFound);
 }
-/* EFI_STATUS
-LibScanHandleDatabase (
-     EFI_HANDLE  DriverBindingHandle, OPTIONAL
-     UINT32      *DriverBindingHandleIndex, OPTIONAL
-     EFI_HANDLE  ControllerHandle, OPTIONAL
-     UINT32      *ControllerHandleIndex, OPTIONAL
-     UINTN       *HandleCount,
-     EFI_HANDLE  **HandleBuffer,
-     UINT32      **HandleType
-     );
-#define EFI_HANDLE_TYPE_UNKNOWN                     0x000
-#define EFI_HANDLE_TYPE_IMAGE_HANDLE                0x001
-#define EFI_HANDLE_TYPE_DRIVER_BINDING_HANDLE       0x002
-#define EFI_HANDLE_TYPE_DEVICE_DRIVER               0x004
-#define EFI_HANDLE_TYPE_BUS_DRIVER                  0x008
-#define EFI_HANDLE_TYPE_DRIVER_CONFIGURATION_HANDLE 0x010
-#define EFI_HANDLE_TYPE_DRIVER_DIAGNOSTICS_HANDLE   0x020
-#define EFI_HANDLE_TYPE_COMPONENT_NAME_HANDLE       0x040
-#define EFI_HANDLE_TYPE_DEVICE_HANDLE               0x080
-#define EFI_HANDLE_TYPE_PARENT_HANDLE               0x100
-#define EFI_HANDLE_TYPE_CONTROLLER_HANDLE           0x200
-#define EFI_HANDLE_TYPE_CHILD_HANDLE                0x400 */
 
 static EFI_STATUS ConnectAllDriversToAllControllers(VOID)
 {
-    EFI_STATUS  Status;
-    UINTN       AllHandleCount;
-    EFI_HANDLE  *AllHandleBuffer;
-    UINTN       Index;
-    UINTN       HandleCount;
-    EFI_HANDLE  *HandleBuffer;
-    UINT32      *HandleType;
-    UINTN       HandleIndex;
-    BOOLEAN     Parent;
-    BOOLEAN     Device;
+    EFI_STATUS           Status;
+    UINTN                AllHandleCount;
+    EFI_HANDLE           *AllHandleBuffer;
+    UINTN                Index;
+    UINTN                HandleCount;
+    EFI_HANDLE           *HandleBuffer;
+    UINT32               *HandleType;
+    UINTN                HandleIndex;
+    BOOLEAN              Parent;
+    BOOLEAN              Device;
 
     Status = LibLocateHandle(AllHandles,
                              NULL,
@@ -1204,15 +1339,15 @@ static EFI_STATUS ConnectAllDriversToAllControllers(VOID)
             for (HandleIndex = 0; HandleIndex < HandleCount; HandleIndex++) {
                 if (HandleType[HandleIndex] & EFI_HANDLE_TYPE_PARENT_HANDLE)
                     Parent = TRUE;
-            }
+            } // for
 
             if (!Parent) {
                 if (HandleType[Index] & EFI_HANDLE_TYPE_DEVICE_HANDLE) {
-                    Status = refit_call4_wrapper(BS->ConnectController,
-                                                 AllHandleBuffer[Index],
-                                                 NULL,
-                                                 NULL,
-                                                 TRUE);
+                   Status = refit_call4_wrapper(BS->ConnectController,
+                                                AllHandleBuffer[Index],
+                                                NULL,
+                                                NULL,
+                                                TRUE);
                 }
             }
         }
@@ -1224,23 +1359,35 @@ static EFI_STATUS ConnectAllDriversToAllControllers(VOID)
 Done:
     FreePool (AllHandleBuffer);
     return Status;
-}
+} /* EFI_STATUS ConnectAllDriversToAllControllers() */
 
+// Load all EFI drivers from rEFInd's "drivers" subdirectory and from the
+// directories specified by the user in the "scan_driver_dirs" configuration
+// file line.
 static VOID LoadDrivers(VOID)
 {
-    CHAR16                  DirName[256];
-
-    // load drivers from /efi/refind/drivers
-    SPrint(DirName, 255, L"%s\\drivers", SelfDirPath);
-    ScanDriverDir(DirName);
-
-    // load drivers from /efi/tools/drivers
-    ScanDriverDir(L"\\efi\\tools\\drivers");
+    CHAR16        *Directory;
+    UINTN         i = 0, Length, NumFound = 0;
+
+    // load drivers from the "drivers" subdirectory of rEFInd's home directory
+    Directory = StrDuplicate(SelfDirPath);
+    CleanUpPathNameSlashes(Directory);
+    MergeStrings(&Directory, L"drivers", L'\\');
+    NumFound += ScanDriverDir(Directory);
+
+    // Scan additional user-specified driver directories....
+    while ((Directory = FindCommaDelimited(GlobalConfig.DriverDirs, i++)) != NULL) {
+       CleanUpPathNameSlashes(Directory);
+       Length = StrLen(Directory);
+       if (Length > 0)
+          NumFound += ScanDriverDir(Directory);
+       FreePool(Directory);
+    } // while
 
     // connect all devices
-    ConnectAllDriversToAllControllers();
-}
-#endif /* DEBIAN_ENABLE_EFI110 */
+    if (NumFound > 0)
+       ConnectAllDriversToAllControllers();
+} /* static VOID LoadDrivers() */
 
 static VOID ScanForBootloaders(VOID) {
    UINTN i;
@@ -1298,31 +1445,36 @@ static VOID ScanForBootloaders(VOID) {
 // reboot, etc.)
 static VOID ScanForTools(VOID) {
    CHAR16 *FileName = NULL;
+   REFIT_MENU_ENTRY *TempMenuEntry;
    UINTN i, j;
 
    for (i = 0; i < NUM_TOOLS; i++) {
       switch(GlobalConfig.ShowTools[i]) {
          case TAG_SHUTDOWN:
-            MenuEntryShutdown.Image = BuiltinIcon(BUILTIN_ICON_FUNC_SHUTDOWN);
-            AddMenuEntry(&MainMenu, &MenuEntryShutdown);
+            TempMenuEntry = CopyMenuEntry(&MenuEntryShutdown);
+            TempMenuEntry->Image = BuiltinIcon(BUILTIN_ICON_FUNC_SHUTDOWN);
+            AddMenuEntry(&MainMenu, TempMenuEntry);
             break;
          case TAG_REBOOT:
-            MenuEntryReset.Image = BuiltinIcon(BUILTIN_ICON_FUNC_RESET);
-            AddMenuEntry(&MainMenu, &MenuEntryReset);
+            TempMenuEntry = CopyMenuEntry(&MenuEntryReset);
+            TempMenuEntry->Image = BuiltinIcon(BUILTIN_ICON_FUNC_RESET);
+            AddMenuEntry(&MainMenu, TempMenuEntry);
             break;
          case TAG_ABOUT:
-            MenuEntryAbout.Image = BuiltinIcon(BUILTIN_ICON_FUNC_ABOUT);
-            AddMenuEntry(&MainMenu, &MenuEntryAbout);
+            TempMenuEntry = CopyMenuEntry(&MenuEntryAbout);
+            TempMenuEntry->Image = BuiltinIcon(BUILTIN_ICON_FUNC_ABOUT);
+            AddMenuEntry(&MainMenu, TempMenuEntry);
             break;
          case TAG_EXIT:
-            MenuEntryExit.Image = BuiltinIcon(BUILTIN_ICON_FUNC_EXIT);
-            AddMenuEntry(&MainMenu, &MenuEntryExit);
+            TempMenuEntry = CopyMenuEntry(&MenuEntryExit);
+            TempMenuEntry->Image = BuiltinIcon(BUILTIN_ICON_FUNC_EXIT);
+            AddMenuEntry(&MainMenu, TempMenuEntry);
             break;
          case TAG_SHELL:
             j = 0;
             while ((FileName = FindCommaDelimited(SHELL_NAMES, j++)) != NULL) {
                if (FileExists(SelfRootDir, FileName)) {
-                  AddToolEntry(FileName, L"EFI Shell", BuiltinIcon(BUILTIN_ICON_TOOL_SHELL), 'E', FALSE);
+                  AddToolEntry(FileName, L"EFI Shell", BuiltinIcon(BUILTIN_ICON_TOOL_SHELL), 'S', FALSE);
                }
             } // while
             break;
@@ -1348,10 +1500,11 @@ EFI_STATUS
 EFIAPI
 efi_main (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
 {
-    EFI_STATUS Status;
-    BOOLEAN MainLoopRunning = TRUE;
-    REFIT_MENU_ENTRY *ChosenEntry;
-    UINTN MenuExit;
+    EFI_STATUS         Status;
+    BOOLEAN            MainLoopRunning = TRUE;
+    REFIT_MENU_ENTRY   *ChosenEntry;
+    UINTN              MenuExit;
+    CHAR16             *Selection;
 
     // bootstrap
     InitializeLib(ImageHandle, SystemTable);
@@ -1370,23 +1523,24 @@ efi_main (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
 
     // further bootstrap (now with config available)
     SetupScreen();
-#ifdef DEBIAN_ENABLE_EFI110
     LoadDrivers();
-#endif /* DEBIAN_ENABLE_EFI110 */
     ScanForBootloaders();
     ScanForTools();
 
+    Selection = StrDuplicate(GlobalConfig.DefaultSelection);
     while (MainLoopRunning) {
-        MenuExit = RunMainMenu(&MainMenu, GlobalConfig.DefaultSelection, &ChosenEntry);
+        MenuExit = RunMainMenu(&MainMenu, Selection, &ChosenEntry);
 
         // We don't allow exiting the main menu with the Escape key.
         if (MenuExit == MENU_EXIT_ESCAPE) {
-           // Commented-out below: Was part of an attempt to get rEFInd to
-           // re-scan disk devices on pressing Esc; but doesn't work (yet), so
-           // removed....
-//             ReadConfig();
-//             ScanForBootloaders();
-//             SetupScreen();
+            FreeList((VOID ***) &(MainMenu.Entries), &MainMenu.EntryCount);
+            MainMenu.Entries = NULL;
+            MainMenu.EntryCount = 0;
+            ReadConfig();
+            ConnectAllDriversToAllControllers();
+            ScanForBootloaders();
+            ScanForTools();
+            SetupScreen();
             continue;
         }
 
@@ -1425,13 +1579,15 @@ efi_main (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)
                 return EFI_SUCCESS;
                 break;
 
-        }
-    }
+        } // switch()
+        FreePool(Selection);
+        Selection = StrDuplicate(ChosenEntry->Title);
+    } // while()
 
     // If we end up here, things have gone wrong. Try to reboot, and if that
     // fails, go into an endless loop.
     refit_call4_wrapper(RT->ResetSystem, EfiResetCold, EFI_SUCCESS, 0, NULL);
     EndlessIdleLoop();
-    
+
     return EFI_SUCCESS;
 } /* efi_main() */