src/boot/efi/boot.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /*
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU Lesser General Public License as published by
   6  * the Free Software Foundation; either version 2.1 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * Copyright (C) 2012-2015 Kay Sievers <kay@vrfy.org>
  15  * Copyright (C) 2012-2015 Harald Hoyer <harald@redhat.com>
  16  */
  17
  18 #include <efi.h>
  19 #include <efilib.h>
  20
  21 #include "console.h"
  22 #include "disk.h"
  23 #include "graphics.h"
  24 #include "linux.h"
  25 #include "pefile.h"
  26 #include "util.h"
  27
  28 #ifndef EFI_OS_INDICATIONS_BOOT_TO_FW_UI
  29 #define EFI_OS_INDICATIONS_BOOT_TO_FW_UI 0x0000000000000001ULL
  30 #endif
  31
  32 /* magic string to find in the binary image */
  33 static const char __attribute__((used)) magic[] = "#### LoaderInfo: systemd-boot " VERSION " ####";
  34
  35 static const EFI_GUID global_guid = EFI_GLOBAL_VARIABLE;
  36
  37 enum loader_type {
  38         LOADER_UNDEFINED,
  39         LOADER_EFI,
  40         LOADER_LINUX
  41 };
  42
  43 typedef struct {
  44         CHAR16 *file;
  45         CHAR16 *title_show;
  46         CHAR16 *title;
  47         CHAR16 *version;
  48         CHAR16 *machine_id;
  49         EFI_HANDLE *device;
  50         enum loader_type type;
  51         CHAR16 *loader;
  52         CHAR16 *options;
  53         CHAR16 key;
  54         EFI_STATUS (*call)(VOID);
  55         BOOLEAN no_autoselect;
  56         BOOLEAN non_unique;
  57 } ConfigEntry;
  58
  59 typedef struct {
  60         ConfigEntry **entries;
  61         UINTN entry_count;
  62         INTN idx_default;
  63         INTN idx_default_efivar;
  64         UINTN timeout_sec;
  65         UINTN timeout_sec_config;
  66         INTN timeout_sec_efivar;
  67         CHAR16 *entry_default_pattern;
  68         CHAR16 *entry_oneshot;
  69         CHAR16 *options_edit;
  70         BOOLEAN no_editor;
  71 } Config;
  72
  73 static VOID cursor_left(UINTN *cursor, UINTN *first) {
  74         if ((*cursor) > 0)
  75                 (*cursor)--;
  76         else if ((*first) > 0)
  77                 (*first)--;
  78 }
  79
  80 static VOID cursor_right(UINTN *cursor, UINTN *first, UINTN x_max, UINTN len) {
  81         if ((*cursor)+1 < x_max)
  82                 (*cursor)++;
  83         else if ((*first) + (*cursor) < len)
  84                 (*first)++;
  85 }
  86
  87 static BOOLEAN line_edit(CHAR16 *line_in, CHAR16 **line_out, UINTN x_max, UINTN y_pos) {
  88         CHAR16 *line;
  89         UINTN size;
  90         UINTN len;
  91         UINTN first;
  92         CHAR16 *print;
  93         UINTN cursor;
  94         UINTN clear;
  95         BOOLEAN exit;
  96         BOOLEAN enter;
  97
  98         if (!line_in)
  99                 line_in = L"";
 100         size = StrLen(line_in) + 1024;
 101         line = AllocatePool(size * sizeof(CHAR16));
 102         StrCpy(line, line_in);
 103         len = StrLen(line);
 104         print = AllocatePool((x_max+1) * sizeof(CHAR16));
 105
 106         uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, TRUE);
 107
 108         first = 0;
 109         cursor = 0;
 110         clear = 0;
 111         enter = FALSE;
 112         exit = FALSE;
 113         while (!exit) {
 114                 EFI_STATUS err;
 115                 UINT64 key;
 116                 UINTN i;
 117
 118                 i = len - first;
 119                 if (i >= x_max-1)
 120                         i = x_max-1;
 121                 CopyMem(print, line + first, i * sizeof(CHAR16));
 122                 while (clear > 0 && i < x_max-1) {
 123                         clear--;
 124                         print[i++] = ' ';
 125                 }
 126                 print[i] = '\0';
 127
 128                 uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_pos);
 129                 uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, print);
 130                 uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 131
 132                 err = console_key_read(&key, TRUE);
 133                 if (EFI_ERROR(err))
 134                         continue;
 135
 136                 switch (key) {
 137                 case KEYPRESS(0, SCAN_ESC, 0):
 138                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'c'):
 139                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'g'):
 140                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('c')):
 141                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('g')):
 142                         exit = TRUE;
 143                         break;
 144
 145                 case KEYPRESS(0, SCAN_HOME, 0):
 146                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'a'):
 147                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('a')):
 148                         /* beginning-of-line */
 149                         cursor = 0;
 150                         first = 0;
 151                         continue;
 152
 153                 case KEYPRESS(0, SCAN_END, 0):
 154                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'e'):
 155                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('e')):
 156                         /* end-of-line */
 157                         cursor = len - first;
 158                         if (cursor+1 >= x_max) {
 159                                 cursor = x_max-1;
 160                                 first = len - (x_max-1);
 161                         }
 162                         continue;
 163
 164                 case KEYPRESS(0, SCAN_DOWN, 0):
 165                 case KEYPRESS(EFI_ALT_PRESSED, 0, 'f'):
 166                 case KEYPRESS(EFI_CONTROL_PRESSED, SCAN_RIGHT, 0):
 167                         /* forward-word */
 168                         while (line[first + cursor] && line[first + cursor] == ' ')
 169                                 cursor_right(&cursor, &first, x_max, len);
 170                         while (line[first + cursor] && line[first + cursor] != ' ')
 171                                 cursor_right(&cursor, &first, x_max, len);
 172                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 173                         continue;
 174
 175                 case KEYPRESS(0, SCAN_UP, 0):
 176                 case KEYPRESS(EFI_ALT_PRESSED, 0, 'b'):
 177                 case KEYPRESS(EFI_CONTROL_PRESSED, SCAN_LEFT, 0):
 178                         /* backward-word */
 179                         if ((first + cursor) > 0 && line[first + cursor-1] == ' ') {
 180                                 cursor_left(&cursor, &first);
 181                                 while ((first + cursor) > 0 && line[first + cursor] == ' ')
 182                                         cursor_left(&cursor, &first);
 183                         }
 184                         while ((first + cursor) > 0 && line[first + cursor-1] != ' ')
 185                                 cursor_left(&cursor, &first);
 186                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 187                         continue;
 188
 189                 case KEYPRESS(0, SCAN_RIGHT, 0):
 190                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'f'):
 191                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('f')):
 192                         /* forward-char */
 193                         if (first + cursor == len)
 194                                 continue;
 195                         cursor_right(&cursor, &first, x_max, len);
 196                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 197                         continue;
 198
 199                 case KEYPRESS(0, SCAN_LEFT, 0):
 200                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'b'):
 201                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('b')):
 202                         /* backward-char */
 203                         cursor_left(&cursor, &first);
 204                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 205                         continue;
 206
 207                 case KEYPRESS(EFI_ALT_PRESSED, 0, 'd'):
 208                         /* kill-word */
 209                         clear = 0;
 210                         for (i = first + cursor; i < len && line[i] == ' '; i++)
 211                                 clear++;
 212                         for (; i < len && line[i] != ' '; i++)
 213                                 clear++;
 214
 215                         for (i = first + cursor; i + clear < len; i++)
 216                                 line[i] = line[i + clear];
 217                         len -= clear;
 218                         line[len] = '\0';
 219                         continue;
 220
 221                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'w'):
 222                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('w')):
 223                 case KEYPRESS(EFI_ALT_PRESSED, 0, CHAR_BACKSPACE):
 224                         /* backward-kill-word */
 225                         clear = 0;
 226                         if ((first + cursor) > 0 && line[first + cursor-1] == ' ') {
 227                                 cursor_left(&cursor, &first);
 228                                 clear++;
 229                                 while ((first + cursor) > 0 && line[first + cursor] == ' ') {
 230                                         cursor_left(&cursor, &first);
 231                                         clear++;
 232                                 }
 233                         }
 234                         while ((first + cursor) > 0 && line[first + cursor-1] != ' ') {
 235                                 cursor_left(&cursor, &first);
 236                                 clear++;
 237                         }
 238                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, cursor, y_pos);
 239
 240                         for (i = first + cursor; i + clear < len; i++)
 241                                 line[i] = line[i + clear];
 242                         len -= clear;
 243                         line[len] = '\0';
 244                         continue;
 245
 246                 case KEYPRESS(0, SCAN_DELETE, 0):
 247                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'd'):
 248                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('d')):
 249                         if (len == 0)
 250                                 continue;
 251                         if (first + cursor == len)
 252                                 continue;
 253                         for (i = first + cursor; i < len; i++)
 254                                 line[i] = line[i+1];
 255                         clear = 1;
 256                         len--;
 257                         continue;
 258
 259                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'k'):
 260                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('k')):
 261                         /* kill-line */
 262                         line[first + cursor] = '\0';
 263                         clear = len - (first + cursor);
 264                         len = first + cursor;
 265                         continue;
 266
 267                 case KEYPRESS(0, 0, CHAR_LINEFEED):
 268                 case KEYPRESS(0, 0, CHAR_CARRIAGE_RETURN):
 269                         if (StrCmp(line, line_in) != 0) {
 270                                 *line_out = line;
 271                                 line = NULL;
 272                         }
 273                         enter = TRUE;
 274                         exit = TRUE;
 275                         break;
 276
 277                 case KEYPRESS(0, 0, CHAR_BACKSPACE):
 278                         if (len == 0)
 279                                 continue;
 280                         if (first == 0 && cursor == 0)
 281                                 continue;
 282                         for (i = first + cursor-1; i < len; i++)
 283                                 line[i] = line[i+1];
 284                         clear = 1;
 285                         len--;
 286                         if (cursor > 0)
 287                                 cursor--;
 288                         if (cursor > 0 || first == 0)
 289                                 continue;
 290                         /* show full line if it fits */
 291                         if (len < x_max) {
 292                                 cursor = first;
 293                                 first = 0;
 294                                 continue;
 295                         }
 296                         /* jump left to see what we delete */
 297                         if (first > 10) {
 298                                 first -= 10;
 299                                 cursor = 10;
 300                         } else {
 301                                 cursor = first;
 302                                 first = 0;
 303                         }
 304                         continue;
 305
 306                 case KEYPRESS(0, 0, ' ') ... KEYPRESS(0, 0, '~'):
 307                 case KEYPRESS(0, 0, 0x80) ... KEYPRESS(0, 0, 0xffff):
 308                         if (len+1 == size)
 309                                 continue;
 310                         for (i = len; i > first + cursor; i--)
 311                                 line[i] = line[i-1];
 312                         line[first + cursor] = KEYCHAR(key);
 313                         len++;
 314                         line[len] = '\0';
 315                         if (cursor+1 < x_max)
 316                                 cursor++;
 317                         else if (first + cursor < len)
 318                                 first++;
 319                         continue;
 320                 }
 321         }
 322
 323         uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, FALSE);
 324         FreePool(print);
 325         FreePool(line);
 326         return enter;
 327 }
 328
 329 static UINTN entry_lookup_key(Config *config, UINTN start, CHAR16 key) {
 330         UINTN i;
 331
 332         if (key == 0)
 333                 return -1;
 334
 335         /* select entry by number key */
 336         if (key >= '1' && key <= '9') {
 337                 i = key - '0';
 338                 if (i > config->entry_count)
 339                         i = config->entry_count;
 340                 return i-1;
 341         }
 342
 343         /* find matching key in config entries */
 344         for (i = start; i < config->entry_count; i++)
 345                 if (config->entries[i]->key == key)
 346                         return i;
 347
 348         for (i = 0; i < start; i++)
 349                 if (config->entries[i]->key == key)
 350                         return i;
 351
 352         return -1;
 353 }
 354
 355 static VOID print_status(Config *config, CHAR16 *loaded_image_path) {
 356         UINT64 key;
 357         UINTN i;
 358         CHAR16 *s;
 359         CHAR8 *b;
 360         UINTN x;
 361         UINTN y;
 362         UINTN size;
 363
 364         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 365         uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
 366
 367         Print(L"systemd-boot version:   " VERSION "\n");
 368         Print(L"architecture:           " EFI_MACHINE_TYPE_NAME "\n");
 369         Print(L"loaded image:           %s\n", loaded_image_path);
 370         Print(L"UEFI specification:     %d.%02d\n", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
 371         Print(L"firmware vendor:        %s\n", ST->FirmwareVendor);
 372         Print(L"firmware version:       %d.%02d\n", ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
 373
 374         if (uefi_call_wrapper(ST->ConOut->QueryMode, 4, ST->ConOut, ST->ConOut->Mode->Mode, &x, &y) == EFI_SUCCESS)
 375                 Print(L"console size:           %d x %d\n", x, y);
 376
 377         if (efivar_get_raw(&global_guid, L"SecureBoot", &b, &size) == EFI_SUCCESS) {
 378                 Print(L"SecureBoot:             %s\n", yes_no(*b > 0));
 379                 FreePool(b);
 380         }
 381
 382         if (efivar_get_raw(&global_guid, L"SetupMode", &b, &size) == EFI_SUCCESS) {
 383                 Print(L"SetupMode:              %s\n", *b > 0 ? L"setup" : L"user");
 384                 FreePool(b);
 385         }
 386
 387         if (efivar_get_raw(&global_guid, L"OsIndicationsSupported", &b, &size) == EFI_SUCCESS) {
 388                 Print(L"OsIndicationsSupported: %d\n", (UINT64)*b);
 389                 FreePool(b);
 390         }
 391         Print(L"\n");
 392
 393         Print(L"timeout:                %d\n", config->timeout_sec);
 394         if (config->timeout_sec_efivar >= 0)
 395                 Print(L"timeout (EFI var):      %d\n", config->timeout_sec_efivar);
 396         Print(L"timeout (config):       %d\n", config->timeout_sec_config);
 397         if (config->entry_default_pattern)
 398                 Print(L"default pattern:        '%s'\n", config->entry_default_pattern);
 399         Print(L"editor:                 %s\n", yes_no(!config->no_editor));
 400         Print(L"\n");
 401
 402         Print(L"config entry count:     %d\n", config->entry_count);
 403         Print(L"entry selected idx:     %d\n", config->idx_default);
 404         if (config->idx_default_efivar >= 0)
 405                 Print(L"entry EFI var idx:      %d\n", config->idx_default_efivar);
 406         Print(L"\n");
 407
 408         if (efivar_get_int(L"LoaderConfigTimeout", &i) == EFI_SUCCESS)
 409                 Print(L"LoaderConfigTimeout:    %d\n", i);
 410         if (config->entry_oneshot)
 411                 Print(L"LoaderEntryOneShot:     %s\n", config->entry_oneshot);
 412         if (efivar_get(L"LoaderDevicePartUUID", &s) == EFI_SUCCESS) {
 413                 Print(L"LoaderDevicePartUUID:   %s\n", s);
 414                 FreePool(s);
 415         }
 416         if (efivar_get(L"LoaderEntryDefault", &s) == EFI_SUCCESS) {
 417                 Print(L"LoaderEntryDefault:     %s\n", s);
 418                 FreePool(s);
 419         }
 420
 421         Print(L"\n--- press key ---\n\n");
 422         console_key_read(&key, TRUE);
 423
 424         for (i = 0; i < config->entry_count; i++) {
 425                 ConfigEntry *entry;
 426
 427                 if (key == KEYPRESS(0, SCAN_ESC, 0) || key == KEYPRESS(0, 0, 'q'))
 428                         break;
 429
 430                 entry = config->entries[i];
 431                 Print(L"config entry:           %d/%d\n", i+1, config->entry_count);
 432                 if (entry->file)
 433                         Print(L"file                    '%s'\n", entry->file);
 434                 Print(L"title show              '%s'\n", entry->title_show);
 435                 if (entry->title)
 436                         Print(L"title                   '%s'\n", entry->title);
 437                 if (entry->version)
 438                         Print(L"version                 '%s'\n", entry->version);
 439                 if (entry->machine_id)
 440                         Print(L"machine-id              '%s'\n", entry->machine_id);
 441                 if (entry->device) {
 442                         EFI_DEVICE_PATH *device_path;
 443                         CHAR16 *str;
 444
 445                         device_path = DevicePathFromHandle(entry->device);
 446                         if (device_path) {
 447                                 str = DevicePathToStr(device_path);
 448                                 Print(L"device handle           '%s'\n", str);
 449                                 FreePool(str);
 450                         }
 451                 }
 452                 if (entry->loader)
 453                         Print(L"loader                  '%s'\n", entry->loader);
 454                 if (entry->options)
 455                         Print(L"options                 '%s'\n", entry->options);
 456                 Print(L"auto-select             %s\n", yes_no(!entry->no_autoselect));
 457                 if (entry->call)
 458                         Print(L"internal call           yes\n");
 459
 460                 Print(L"\n--- press key ---\n\n");
 461                 console_key_read(&key, TRUE);
 462         }
 463
 464         uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
 465 }
 466
 467 static BOOLEAN menu_run(Config *config, ConfigEntry **chosen_entry, CHAR16 *loaded_image_path) {
 468         EFI_STATUS err;
 469         UINTN visible_max;
 470         UINTN idx_highlight;
 471         UINTN idx_highlight_prev;
 472         UINTN idx_first;
 473         UINTN idx_last;
 474         BOOLEAN refresh;
 475         BOOLEAN highlight;
 476         UINTN i;
 477         UINTN line_width;
 478         CHAR16 **lines;
 479         UINTN x_start;
 480         UINTN y_start;
 481         UINTN x_max;
 482         UINTN y_max;
 483         CHAR16 *status;
 484         CHAR16 *clearline;
 485         INTN timeout_remain;
 486         INT16 idx;
 487         BOOLEAN exit = FALSE;
 488         BOOLEAN run = TRUE;
 489         BOOLEAN wait = FALSE;
 490
 491         graphics_mode(FALSE);
 492         uefi_call_wrapper(ST->ConIn->Reset, 2, ST->ConIn, FALSE);
 493         uefi_call_wrapper(ST->ConOut->EnableCursor, 2, ST->ConOut, FALSE);
 494         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 495
 496         /* draw a single character to make ClearScreen work on some firmware */
 497         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L" ");
 498         uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
 499
 500         err = uefi_call_wrapper(ST->ConOut->QueryMode, 4, ST->ConOut, ST->ConOut->Mode->Mode, &x_max, &y_max);
 501         if (EFI_ERROR(err)) {
 502                 x_max = 80;
 503                 y_max = 25;
 504         }
 505
 506         /* we check 10 times per second for a keystroke */
 507         if (config->timeout_sec > 0)
 508                 timeout_remain = config->timeout_sec * 10;
 509         else
 510                 timeout_remain = -1;
 511
 512         idx_highlight = config->idx_default;
 513         idx_highlight_prev = 0;
 514
 515         visible_max = y_max - 2;
 516
 517         if ((UINTN)config->idx_default >= visible_max)
 518                 idx_first = config->idx_default-1;
 519         else
 520                 idx_first = 0;
 521
 522         idx_last = idx_first + visible_max-1;
 523
 524         refresh = TRUE;
 525         highlight = FALSE;
 526
 527         /* length of the longest entry */
 528         line_width = 5;
 529         for (i = 0; i < config->entry_count; i++) {
 530                 UINTN entry_len;
 531
 532                 entry_len = StrLen(config->entries[i]->title_show);
 533                 if (line_width < entry_len)
 534                         line_width = entry_len;
 535         }
 536         if (line_width > x_max-6)
 537                 line_width = x_max-6;
 538
 539         /* offsets to center the entries on the screen */
 540         x_start = (x_max - (line_width)) / 2;
 541         if (config->entry_count < visible_max)
 542                 y_start = ((visible_max - config->entry_count) / 2) + 1;
 543         else
 544                 y_start = 0;
 545
 546         /* menu entries title lines */
 547         lines = AllocatePool(sizeof(CHAR16 *) * config->entry_count);
 548         for (i = 0; i < config->entry_count; i++) {
 549                 UINTN j, k;
 550
 551                 lines[i] = AllocatePool(((x_max+1) * sizeof(CHAR16)));
 552                 for (j = 0; j < x_start; j++)
 553                         lines[i][j] = ' ';
 554
 555                 for (k = 0; config->entries[i]->title_show[k] != '\0' && j < x_max; j++, k++)
 556                         lines[i][j] = config->entries[i]->title_show[k];
 557
 558                 for (; j < x_max; j++)
 559                         lines[i][j] = ' ';
 560                 lines[i][x_max] = '\0';
 561         }
 562
 563         status = NULL;
 564         clearline = AllocatePool((x_max+1) * sizeof(CHAR16));
 565         for (i = 0; i < x_max; i++)
 566                 clearline[i] = ' ';
 567         clearline[i] = 0;
 568
 569         while (!exit) {
 570                 UINT64 key;
 571
 572                 if (refresh) {
 573                         for (i = 0; i < config->entry_count; i++) {
 574                                 if (i < idx_first || i > idx_last)
 575                                         continue;
 576                                 uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + i - idx_first);
 577                                 if (i == idx_highlight)
 578                                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut,
 579                                                           EFI_BLACK|EFI_BACKGROUND_LIGHTGRAY);
 580                                 else
 581                                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut,
 582                                                           EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 583                                 uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[i]);
 584                                 if ((INTN)i == config->idx_default_efivar) {
 585                                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + i - idx_first);
 586                                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
 587                                 }
 588                         }
 589                         refresh = FALSE;
 590                 } else if (highlight) {
 591                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + idx_highlight_prev - idx_first);
 592                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 593                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[idx_highlight_prev]);
 594                         if ((INTN)idx_highlight_prev == config->idx_default_efivar) {
 595                                 uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + idx_highlight_prev - idx_first);
 596                                 uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
 597                         }
 598
 599                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_start + idx_highlight - idx_first);
 600                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_BLACK|EFI_BACKGROUND_LIGHTGRAY);
 601                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, lines[idx_highlight]);
 602                         if ((INTN)idx_highlight == config->idx_default_efivar) {
 603                                 uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, x_start-3, y_start + idx_highlight - idx_first);
 604                                 uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, L"=>");
 605                         }
 606                         highlight = FALSE;
 607                 }
 608
 609                 if (timeout_remain > 0) {
 610                         FreePool(status);
 611                         status = PoolPrint(L"Boot in %d sec.", (timeout_remain + 5) / 10);
 612                 }
 613
 614                 /* print status at last line of screen */
 615                 if (status) {
 616                         UINTN len;
 617                         UINTN x;
 618
 619                         /* center line */
 620                         len = StrLen(status);
 621                         if (len < x_max)
 622                                 x = (x_max - len) / 2;
 623                         else
 624                                 x = 0;
 625                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 626                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
 627                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline + (x_max - x));
 628                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, status);
 629                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1 + x + len);
 630                 }
 631
 632                 err = console_key_read(&key, wait);
 633                 if (EFI_ERROR(err)) {
 634                         /* timeout reached */
 635                         if (timeout_remain == 0) {
 636                                 exit = TRUE;
 637                                 break;
 638                         }
 639
 640                         /* sleep and update status */
 641                         if (timeout_remain > 0) {
 642                                 uefi_call_wrapper(BS->Stall, 1, 100 * 1000);
 643                                 timeout_remain--;
 644                                 continue;
 645                         }
 646
 647                         /* timeout disabled, wait for next key */
 648                         wait = TRUE;
 649                         continue;
 650                 }
 651
 652                 timeout_remain = -1;
 653
 654                 /* clear status after keystroke */
 655                 if (status) {
 656                         FreePool(status);
 657                         status = NULL;
 658                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 659                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
 660                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
 661                 }
 662
 663                 idx_highlight_prev = idx_highlight;
 664
 665                 switch (key) {
 666                 case KEYPRESS(0, SCAN_UP, 0):
 667                 case KEYPRESS(0, 0, 'k'):
 668                         if (idx_highlight > 0)
 669                                 idx_highlight--;
 670                         break;
 671
 672                 case KEYPRESS(0, SCAN_DOWN, 0):
 673                 case KEYPRESS(0, 0, 'j'):
 674                         if (idx_highlight < config->entry_count-1)
 675                                 idx_highlight++;
 676                         break;
 677
 678                 case KEYPRESS(0, SCAN_HOME, 0):
 679                 case KEYPRESS(EFI_ALT_PRESSED, 0, '<'):
 680                         if (idx_highlight > 0) {
 681                                 refresh = TRUE;
 682                                 idx_highlight = 0;
 683                         }
 684                         break;
 685
 686                 case KEYPRESS(0, SCAN_END, 0):
 687                 case KEYPRESS(EFI_ALT_PRESSED, 0, '>'):
 688                         if (idx_highlight < config->entry_count-1) {
 689                                 refresh = TRUE;
 690                                 idx_highlight = config->entry_count-1;
 691                         }
 692                         break;
 693
 694                 case KEYPRESS(0, SCAN_PAGE_UP, 0):
 695                         if (idx_highlight > visible_max)
 696                                 idx_highlight -= visible_max;
 697                         else
 698                                 idx_highlight = 0;
 699                         break;
 700
 701                 case KEYPRESS(0, SCAN_PAGE_DOWN, 0):
 702                         idx_highlight += visible_max;
 703                         if (idx_highlight > config->entry_count-1)
 704                                 idx_highlight = config->entry_count-1;
 705                         break;
 706
 707                 case KEYPRESS(0, 0, CHAR_LINEFEED):
 708                 case KEYPRESS(0, 0, CHAR_CARRIAGE_RETURN):
 709                         exit = TRUE;
 710                         break;
 711
 712                 case KEYPRESS(0, SCAN_F1, 0):
 713                 case KEYPRESS(0, 0, 'h'):
 714                 case KEYPRESS(0, 0, '?'):
 715                         status = StrDuplicate(L"(d)efault, (t/T)timeout, (e)dit, (v)ersion (Q)uit (P)rint (h)elp");
 716                         break;
 717
 718                 case KEYPRESS(0, 0, 'Q'):
 719                         exit = TRUE;
 720                         run = FALSE;
 721                         break;
 722
 723                 case KEYPRESS(0, 0, 'd'):
 724                         if (config->idx_default_efivar != (INTN)idx_highlight) {
 725                                 /* store the selected entry in a persistent EFI variable */
 726                                 efivar_set(L"LoaderEntryDefault", config->entries[idx_highlight]->file, TRUE);
 727                                 config->idx_default_efivar = idx_highlight;
 728                                 status = StrDuplicate(L"Default boot entry selected.");
 729                         } else {
 730                                 /* clear the default entry EFI variable */
 731                                 efivar_set(L"LoaderEntryDefault", NULL, TRUE);
 732                                 config->idx_default_efivar = -1;
 733                                 status = StrDuplicate(L"Default boot entry cleared.");
 734                         }
 735                         refresh = TRUE;
 736                         break;
 737
 738                 case KEYPRESS(0, 0, '-'):
 739                 case KEYPRESS(0, 0, 'T'):
 740                         if (config->timeout_sec_efivar > 0) {
 741                                 config->timeout_sec_efivar--;
 742                                 efivar_set_int(L"LoaderConfigTimeout", config->timeout_sec_efivar, TRUE);
 743                                 if (config->timeout_sec_efivar > 0)
 744                                         status = PoolPrint(L"Menu timeout set to %d sec.", config->timeout_sec_efivar);
 745                                 else
 746                                         status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
 747                         } else if (config->timeout_sec_efivar <= 0){
 748                                 config->timeout_sec_efivar = -1;
 749                                 efivar_set(L"LoaderConfigTimeout", NULL, TRUE);
 750                                 if (config->timeout_sec_config > 0)
 751                                         status = PoolPrint(L"Menu timeout of %d sec is defined by configuration file.",
 752                                                            config->timeout_sec_config);
 753                                 else
 754                                         status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
 755                         }
 756                         break;
 757
 758                 case KEYPRESS(0, 0, '+'):
 759                 case KEYPRESS(0, 0, 't'):
 760                         if (config->timeout_sec_efivar == -1 && config->timeout_sec_config == 0)
 761                                 config->timeout_sec_efivar++;
 762                         config->timeout_sec_efivar++;
 763                         efivar_set_int(L"LoaderConfigTimeout", config->timeout_sec_efivar, TRUE);
 764                         if (config->timeout_sec_efivar > 0)
 765                                 status = PoolPrint(L"Menu timeout set to %d sec.",
 766                                                    config->timeout_sec_efivar);
 767                         else
 768                                 status = StrDuplicate(L"Menu disabled. Hold down key at bootup to show menu.");
 769                         break;
 770
 771                 case KEYPRESS(0, 0, 'e'):
 772                         /* only the options of configured entries can be edited */
 773                         if (config->no_editor || config->entries[idx_highlight]->type == LOADER_UNDEFINED)
 774                                 break;
 775                         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_LIGHTGRAY|EFI_BACKGROUND_BLACK);
 776                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
 777                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
 778                         if (line_edit(config->entries[idx_highlight]->options, &config->options_edit, x_max-1, y_max-1))
 779                                 exit = TRUE;
 780                         uefi_call_wrapper(ST->ConOut->SetCursorPosition, 3, ST->ConOut, 0, y_max-1);
 781                         uefi_call_wrapper(ST->ConOut->OutputString, 2, ST->ConOut, clearline+1);
 782                         break;
 783
 784                 case KEYPRESS(0, 0, 'v'):
 785                         status = PoolPrint(L"systemd-boot " VERSION " (" EFI_MACHINE_TYPE_NAME "), UEFI Specification %d.%02d, Vendor %s %d.%02d",
 786                                            ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff,
 787                                            ST->FirmwareVendor, ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
 788                         break;
 789
 790                 case KEYPRESS(0, 0, 'P'):
 791                         print_status(config, loaded_image_path);
 792                         refresh = TRUE;
 793                         break;
 794
 795                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, 'l'):
 796                 case KEYPRESS(EFI_CONTROL_PRESSED, 0, CHAR_CTRL('l')):
 797                         refresh = TRUE;
 798                         break;
 799
 800                 default:
 801                         /* jump with a hotkey directly to a matching entry */
 802                         idx = entry_lookup_key(config, idx_highlight+1, KEYCHAR(key));
 803                         if (idx < 0)
 804                                 break;
 805                         idx_highlight = idx;
 806                         refresh = TRUE;
 807                 }
 808
 809                 if (idx_highlight > idx_last) {
 810                         idx_last = idx_highlight;
 811                         idx_first = 1 + idx_highlight - visible_max;
 812                         refresh = TRUE;
 813                 } else if (idx_highlight < idx_first) {
 814                         idx_first = idx_highlight;
 815                         idx_last = idx_highlight + visible_max-1;
 816                         refresh = TRUE;
 817                 }
 818
 819                 if (!refresh && idx_highlight != idx_highlight_prev)
 820                         highlight = TRUE;
 821         }
 822
 823         *chosen_entry = config->entries[idx_highlight];
 824
 825         for (i = 0; i < config->entry_count; i++)
 826                 FreePool(lines[i]);
 827         FreePool(lines);
 828         FreePool(clearline);
 829
 830         uefi_call_wrapper(ST->ConOut->SetAttribute, 2, ST->ConOut, EFI_WHITE|EFI_BACKGROUND_BLACK);
 831         uefi_call_wrapper(ST->ConOut->ClearScreen, 1, ST->ConOut);
 832         return run;
 833 }
 834
 835 static VOID config_add_entry(Config *config, ConfigEntry *entry) {
 836         if ((config->entry_count & 15) == 0) {
 837                 UINTN i;
 838
 839                 i = config->entry_count + 16;
 840                 if (config->entry_count == 0)
 841                         config->entries = AllocatePool(sizeof(VOID *) * i);
 842                 else
 843                         config->entries = ReallocatePool(config->entries,
 844                                                          sizeof(VOID *) * config->entry_count, sizeof(VOID *) * i);
 845         }
 846         config->entries[config->entry_count++] = entry;
 847 }
 848
 849 static VOID config_entry_free(ConfigEntry *entry) {
 850         FreePool(entry->title_show);
 851         FreePool(entry->title);
 852         FreePool(entry->machine_id);
 853         FreePool(entry->loader);
 854         FreePool(entry->options);
 855 }
 856
 857 static BOOLEAN is_digit(CHAR16 c) {
 858         return (c >= '0') && (c <= '9');
 859 }
 860
 861 static UINTN c_order(CHAR16 c) {
 862         if (c == '\0')
 863                 return 0;
 864         if (is_digit(c))
 865                 return 0;
 866         else if ((c >= 'a') && (c <= 'z'))
 867                 return c;
 868         else
 869                 return c + 0x10000;
 870 }
 871
 872 static INTN str_verscmp(CHAR16 *s1, CHAR16 *s2) {
 873         CHAR16 *os1 = s1;
 874         CHAR16 *os2 = s2;
 875
 876         while (*s1 || *s2) {
 877                 INTN first;
 878
 879                 while ((*s1 && !is_digit(*s1)) || (*s2 && !is_digit(*s2))) {
 880                         INTN order;
 881
 882                         order = c_order(*s1) - c_order(*s2);
 883                         if (order)
 884                                 return order;
 885                         s1++;
 886                         s2++;
 887                 }
 888
 889                 while (*s1 == '0')
 890                         s1++;
 891                 while (*s2 == '0')
 892                         s2++;
 893
 894                 first = 0;
 895                 while (is_digit(*s1) && is_digit(*s2)) {
 896                         if (first == 0)
 897                                 first = *s1 - *s2;
 898                         s1++;
 899                         s2++;
 900                 }
 901
 902                 if (is_digit(*s1))
 903                         return 1;
 904                 if (is_digit(*s2))
 905                         return -1;
 906
 907                 if (first)
 908                         return first;
 909         }
 910
 911         return StrCmp(os1, os2);
 912 }
 913
 914 static CHAR8 *line_get_key_value(CHAR8 *content, CHAR8 *sep, UINTN *pos, CHAR8 **key_ret, CHAR8 **value_ret) {
 915         CHAR8 *line;
 916         UINTN linelen;
 917         CHAR8 *value;
 918
 919 skip:
 920         line = content + *pos;
 921         if (*line == '\0')
 922                 return NULL;
 923
 924         linelen = 0;
 925         while (line[linelen] && !strchra((CHAR8 *)"\n\r", line[linelen]))
 926                linelen++;
 927
 928         /* move pos to next line */
 929         *pos += linelen;
 930         if (content[*pos])
 931                 (*pos)++;
 932
 933         /* empty line */
 934         if (linelen == 0)
 935                 goto skip;
 936
 937         /* terminate line */
 938         line[linelen] = '\0';
 939
 940         /* remove leading whitespace */
 941         while (strchra((CHAR8 *)" \t", *line)) {
 942                 line++;
 943                 linelen--;
 944         }
 945
 946         /* remove trailing whitespace */
 947         while (linelen > 0 && strchra(sep, line[linelen-1]))
 948                 linelen--;
 949         line[linelen] = '\0';
 950
 951         if (*line == '#')
 952                 goto skip;
 953
 954         /* split key/value */
 955         value = line;
 956         while (*value && !strchra(sep, *value))
 957                 value++;
 958         if (*value == '\0')
 959                 goto skip;
 960         *value = '\0';
 961         value++;
 962         while (*value && strchra(sep, *value))
 963                 value++;
 964
 965         /* unquote */
 966         if (value[0] == '\"' && line[linelen-1] == '\"') {
 967                 value++;
 968                 line[linelen-1] = '\0';
 969         }
 970
 971         *key_ret = line;
 972         *value_ret = value;
 973         return line;
 974 }
 975
 976 static VOID config_defaults_load_from_file(Config *config, CHAR8 *content) {
 977         CHAR8 *line;
 978         UINTN pos = 0;
 979         CHAR8 *key, *value;
 980
 981         line = content;
 982         while ((line = line_get_key_value(content, (CHAR8 *)" \t", &pos, &key, &value))) {
 983                 if (strcmpa((CHAR8 *)"timeout", key) == 0) {
 984                         CHAR16 *s;
 985
 986                         s = stra_to_str(value);
 987                         config->timeout_sec_config = Atoi(s);
 988                         config->timeout_sec = config->timeout_sec_config;
 989                         FreePool(s);
 990                         continue;
 991                 }
 992
 993                 if (strcmpa((CHAR8 *)"default", key) == 0) {
 994                         FreePool(config->entry_default_pattern);
 995                         config->entry_default_pattern = stra_to_str(value);
 996                         StrLwr(config->entry_default_pattern);
 997                         continue;
 998                 }
 999
1000                 if (strcmpa((CHAR8 *)"editor", key) == 0) {
1001                         BOOLEAN on;
1002
1003                         if (EFI_ERROR(parse_boolean(value, &on)))
1004                                 continue;
1005                         config->no_editor = !on;
1006                 }
1007         }
1008 }
1009
1010 static VOID config_entry_add_from_file(Config *config, EFI_HANDLE *device, CHAR16 *file, CHAR8 *content, CHAR16 *loaded_image_path) {
1011         ConfigEntry *entry;
1012         CHAR8 *line;
1013         UINTN pos = 0;
1014         CHAR8 *key, *value;
1015         UINTN len;
1016         CHAR16 *initrd = NULL;
1017
1018         entry = AllocateZeroPool(sizeof(ConfigEntry));
1019
1020         line = content;
1021         while ((line = line_get_key_value(content, (CHAR8 *)" \t", &pos, &key, &value))) {
1022                 if (strcmpa((CHAR8 *)"title", key) == 0) {
1023                         FreePool(entry->title);
1024                         entry->title = stra_to_str(value);
1025                         continue;
1026                 }
1027
1028                 if (strcmpa((CHAR8 *)"version", key) == 0) {
1029                         FreePool(entry->version);
1030                         entry->version = stra_to_str(value);
1031                         continue;
1032                 }
1033
1034                 if (strcmpa((CHAR8 *)"machine-id", key) == 0) {
1035                         FreePool(entry->machine_id);
1036                         entry->machine_id = stra_to_str(value);
1037                         continue;
1038                 }
1039
1040                 if (strcmpa((CHAR8 *)"linux", key) == 0) {
1041                         FreePool(entry->loader);
1042                         entry->type = LOADER_LINUX;
1043                         entry->loader = stra_to_path(value);
1044                         entry->key = 'l';
1045                         continue;
1046                 }
1047
1048                 if (strcmpa((CHAR8 *)"efi", key) == 0) {
1049                         entry->type = LOADER_EFI;
1050                         FreePool(entry->loader);
1051                         entry->loader = stra_to_path(value);
1052
1053                         /* do not add an entry for ourselves */
1054                         if (StriCmp(entry->loader, loaded_image_path) == 0) {
1055                                 entry->type = LOADER_UNDEFINED;
1056                                 break;
1057                         }
1058                         continue;
1059                 }
1060
1061                 if (strcmpa((CHAR8 *)"architecture", key) == 0) {
1062                         /* do not add an entry for an EFI image of architecture not matching with that of the image */
1063                         if (strcmpa((CHAR8 *)EFI_MACHINE_TYPE_NAME, value) != 0) {
1064                                 entry->type = LOADER_UNDEFINED;
1065                                 break;
1066                         }
1067                         continue;
1068                 }
1069
1070                 if (strcmpa((CHAR8 *)"initrd", key) == 0) {
1071                         CHAR16 *new;
1072
1073                         new = stra_to_path(value);
1074                         if (initrd) {
1075                                 CHAR16 *s;
1076
1077                                 s = PoolPrint(L"%s initrd=%s", initrd, new);
1078                                 FreePool(initrd);
1079                                 initrd = s;
1080                         } else
1081                                 initrd = PoolPrint(L"initrd=%s", new);
1082                         FreePool(new);
1083                         continue;
1084                 }
1085
1086                 if (strcmpa((CHAR8 *)"options", key) == 0) {
1087                         CHAR16 *new;
1088
1089                         new = stra_to_str(value);
1090                         if (entry->options) {
1091                                 CHAR16 *s;
1092
1093                                 s = PoolPrint(L"%s %s", entry->options, new);
1094                                 FreePool(entry->options);
1095                                 entry->options = s;
1096                         } else {
1097                                 entry->options = new;
1098                                 new = NULL;
1099                         }
1100                         FreePool(new);
1101                         continue;
1102                 }
1103         }
1104
1105         if (entry->type == LOADER_UNDEFINED) {
1106                 config_entry_free(entry);
1107                 FreePool(initrd);
1108                 FreePool(entry);
1109                 return;
1110         }
1111
1112         /* add initrd= to options */
1113         if (entry->type == LOADER_LINUX && initrd) {
1114                 if (entry->options) {
1115                         CHAR16 *s;
1116
1117                         s = PoolPrint(L"%s %s", initrd, entry->options);
1118                         FreePool(entry->options);
1119                         entry->options = s;
1120                 } else {
1121                         entry->options = initrd;
1122                         initrd = NULL;
1123                 }
1124         }
1125         FreePool(initrd);
1126
1127         entry->device = device;
1128         entry->file = StrDuplicate(file);
1129         len = StrLen(entry->file);
1130         /* remove ".conf" */
1131         if (len > 5)
1132                 entry->file[len - 5] = '\0';
1133         StrLwr(entry->file);
1134
1135         config_add_entry(config, entry);
1136 }
1137
1138 static VOID config_load_defaults(Config *config, EFI_FILE *root_dir) {
1139         CHAR8 *content = NULL;
1140         UINTN sec;
1141         UINTN len;
1142         EFI_STATUS err;
1143
1144         len = file_read(root_dir, L"\\loader\\loader.conf", 0, 0, &content);
1145         if (len > 0)
1146                 config_defaults_load_from_file(config, content);
1147         FreePool(content);
1148
1149         err = efivar_get_int(L"LoaderConfigTimeout", &sec);
1150         if (!EFI_ERROR(err)) {
1151                 config->timeout_sec_efivar = sec;
1152                 config->timeout_sec = sec;
1153         } else
1154                 config->timeout_sec_efivar = -1;
1155 }
1156
1157 static VOID config_load_entries(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir, CHAR16 *loaded_image_path) {
1158         EFI_FILE_HANDLE entries_dir;
1159         EFI_STATUS err;
1160
1161         err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &entries_dir, L"\\loader\\entries", EFI_FILE_MODE_READ, 0ULL);
1162         if (!EFI_ERROR(err)) {
1163                 for (;;) {
1164                         CHAR16 buf[256];
1165                         UINTN bufsize;
1166                         EFI_FILE_INFO *f;
1167                         CHAR8 *content = NULL;
1168                         UINTN len;
1169
1170                         bufsize = sizeof(buf);
1171                         err = uefi_call_wrapper(entries_dir->Read, 3, entries_dir, &bufsize, buf);
1172                         if (bufsize == 0 || EFI_ERROR(err))
1173                                 break;
1174
1175                         f = (EFI_FILE_INFO *) buf;
1176                         if (f->FileName[0] == '.')
1177                                 continue;
1178                         if (f->Attribute & EFI_FILE_DIRECTORY)
1179                                 continue;
1180
1181                         len = StrLen(f->FileName);
1182                         if (len < 6)
1183                                 continue;
1184                         if (StriCmp(f->FileName + len - 5, L".conf") != 0)
1185                                 continue;
1186                         if (StrnCmp(f->FileName, L"auto-", 5) == 0)
1187                                 continue;
1188
1189                         len = file_read(entries_dir, f->FileName, 0, 0, &content);
1190                         if (len > 0)
1191                                 config_entry_add_from_file(config, device, f->FileName, content, loaded_image_path);
1192                         FreePool(content);
1193                 }
1194                 uefi_call_wrapper(entries_dir->Close, 1, entries_dir);
1195         }
1196 }
1197
1198 static VOID config_sort_entries(Config *config) {
1199         UINTN i;
1200
1201         for (i = 1; i < config->entry_count; i++) {
1202                 BOOLEAN more;
1203                 UINTN k;
1204
1205                 more = FALSE;
1206                 for (k = 0; k < config->entry_count - i; k++) {
1207                         ConfigEntry *entry;
1208
1209                         if (str_verscmp(config->entries[k]->file, config->entries[k+1]->file) <= 0)
1210                                 continue;
1211                         entry = config->entries[k];
1212                         config->entries[k] = config->entries[k+1];
1213                         config->entries[k+1] = entry;
1214                         more = TRUE;
1215                 }
1216                 if (!more)
1217                         break;
1218         }
1219 }
1220
1221 static VOID config_default_entry_select(Config *config) {
1222         CHAR16 *var;
1223         EFI_STATUS err;
1224         UINTN i;
1225
1226         /*
1227          * The EFI variable to specify a boot entry for the next, and only the
1228          * next reboot. The variable is always cleared directly after it is read.
1229          */
1230         err = efivar_get(L"LoaderEntryOneShot", &var);
1231         if (!EFI_ERROR(err)) {
1232                 BOOLEAN found = FALSE;
1233
1234                 for (i = 0; i < config->entry_count; i++) {
1235                         if (StrCmp(config->entries[i]->file, var) == 0) {
1236                                 config->idx_default = i;
1237                                 found = TRUE;
1238                                 break;
1239                         }
1240                 }
1241
1242                 config->entry_oneshot = StrDuplicate(var);
1243                 efivar_set(L"LoaderEntryOneShot", NULL, TRUE);
1244                 FreePool(var);
1245                 if (found)
1246                         return;
1247         }
1248
1249         /*
1250          * The EFI variable to select the default boot entry overrides the
1251          * configured pattern. The variable can be set and cleared by pressing
1252          * the 'd' key in the loader selection menu, the entry is marked with
1253          * an '*'.
1254          */
1255         err = efivar_get(L"LoaderEntryDefault", &var);
1256         if (!EFI_ERROR(err)) {
1257                 BOOLEAN found = FALSE;
1258
1259                 for (i = 0; i < config->entry_count; i++) {
1260                         if (StrCmp(config->entries[i]->file, var) == 0) {
1261                                 config->idx_default = i;
1262                                 config->idx_default_efivar = i;
1263                                 found = TRUE;
1264                                 break;
1265                         }
1266                 }
1267                 FreePool(var);
1268                 if (found)
1269                         return;
1270         }
1271         config->idx_default_efivar = -1;
1272
1273         if (config->entry_count == 0)
1274                 return;
1275
1276         /*
1277          * Match the pattern from the end of the list to the start, find last
1278          * entry (largest number) matching the given pattern.
1279          */
1280         if (config->entry_default_pattern) {
1281                 i = config->entry_count;
1282                 while (i--) {
1283                         if (config->entries[i]->no_autoselect)
1284                                 continue;
1285                         if (MetaiMatch(config->entries[i]->file, config->entry_default_pattern)) {
1286                                 config->idx_default = i;
1287                                 return;
1288                         }
1289                 }
1290         }
1291
1292         /* select the last suitable entry */
1293         i = config->entry_count;
1294         while (i--) {
1295                 if (config->entries[i]->no_autoselect)
1296                         continue;
1297                 config->idx_default = i;
1298                 return;
1299         }
1300
1301         /* no entry found */
1302         config->idx_default = -1;
1303 }
1304
1305 /* generate a unique title, avoiding non-distinguishable menu entries */
1306 static VOID config_title_generate(Config *config) {
1307         UINTN i, k;
1308         BOOLEAN unique;
1309
1310         /* set title */
1311         for (i = 0; i < config->entry_count; i++) {
1312                 CHAR16 *title;
1313
1314                 FreePool(config->entries[i]->title_show);
1315                 title = config->entries[i]->title;
1316                 if (!title)
1317                         title = config->entries[i]->file;
1318                 config->entries[i]->title_show = StrDuplicate(title);
1319         }
1320
1321         unique = TRUE;
1322         for (i = 0; i < config->entry_count; i++) {
1323                 for (k = 0; k < config->entry_count; k++) {
1324                         if (i == k)
1325                                 continue;
1326                         if (StrCmp(config->entries[i]->title_show, config->entries[k]->title_show) != 0)
1327                                 continue;
1328
1329                         unique = FALSE;
1330                         config->entries[i]->non_unique = TRUE;
1331                         config->entries[k]->non_unique = TRUE;
1332                 }
1333         }
1334         if (unique)
1335                 return;
1336
1337         /* add version to non-unique titles */
1338         for (i = 0; i < config->entry_count; i++) {
1339                 CHAR16 *s;
1340
1341                 if (!config->entries[i]->non_unique)
1342                         continue;
1343                 if (!config->entries[i]->version)
1344                         continue;
1345
1346                 s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, config->entries[i]->version);
1347                 FreePool(config->entries[i]->title_show);
1348                 config->entries[i]->title_show = s;
1349                 config->entries[i]->non_unique = FALSE;
1350         }
1351
1352         unique = TRUE;
1353         for (i = 0; i < config->entry_count; i++) {
1354                 for (k = 0; k < config->entry_count; k++) {
1355                         if (i == k)
1356                                 continue;
1357                         if (StrCmp(config->entries[i]->title_show, config->entries[k]->title_show) != 0)
1358                                 continue;
1359
1360                         unique = FALSE;
1361                         config->entries[i]->non_unique = TRUE;
1362                         config->entries[k]->non_unique = TRUE;
1363                 }
1364         }
1365         if (unique)
1366                 return;
1367
1368         /* add machine-id to non-unique titles */
1369         for (i = 0; i < config->entry_count; i++) {
1370                 CHAR16 *s;
1371                 CHAR16 *m;
1372
1373                 if (!config->entries[i]->non_unique)
1374                         continue;
1375                 if (!config->entries[i]->machine_id)
1376                         continue;
1377
1378                 m = StrDuplicate(config->entries[i]->machine_id);
1379                 m[8] = '\0';
1380                 s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, m);
1381                 FreePool(config->entries[i]->title_show);
1382                 config->entries[i]->title_show = s;
1383                 config->entries[i]->non_unique = FALSE;
1384                 FreePool(m);
1385         }
1386
1387         unique = TRUE;
1388         for (i = 0; i < config->entry_count; i++) {
1389                 for (k = 0; k < config->entry_count; k++) {
1390                         if (i == k)
1391                                 continue;
1392                         if (StrCmp(config->entries[i]->title_show, config->entries[k]->title_show) != 0)
1393                                 continue;
1394
1395                         unique = FALSE;
1396                         config->entries[i]->non_unique = TRUE;
1397                         config->entries[k]->non_unique = TRUE;
1398                 }
1399         }
1400         if (unique)
1401                 return;
1402
1403         /* add file name to non-unique titles */
1404         for (i = 0; i < config->entry_count; i++) {
1405                 CHAR16 *s;
1406
1407                 if (!config->entries[i]->non_unique)
1408                         continue;
1409                 s = PoolPrint(L"%s (%s)", config->entries[i]->title_show, config->entries[i]->file);
1410                 FreePool(config->entries[i]->title_show);
1411                 config->entries[i]->title_show = s;
1412                 config->entries[i]->non_unique = FALSE;
1413         }
1414 }
1415
1416 static BOOLEAN config_entry_add_call(Config *config, CHAR16 *title, EFI_STATUS (*call)(VOID)) {
1417         ConfigEntry *entry;
1418
1419         entry = AllocateZeroPool(sizeof(ConfigEntry));
1420         entry->title = StrDuplicate(title);
1421         entry->call = call;
1422         entry->no_autoselect = TRUE;
1423         config_add_entry(config, entry);
1424         return TRUE;
1425 }
1426
1427 static ConfigEntry *config_entry_add_loader(Config *config, EFI_HANDLE *device,
1428                                             enum loader_type type,CHAR16 *file, CHAR16 key, CHAR16 *title, CHAR16 *loader) {
1429         ConfigEntry *entry;
1430
1431         entry = AllocateZeroPool(sizeof(ConfigEntry));
1432         entry->type = type;
1433         entry->title = StrDuplicate(title);
1434         entry->device = device;
1435         entry->loader = StrDuplicate(loader);
1436         entry->file = StrDuplicate(file);
1437         StrLwr(entry->file);
1438         entry->key = key;
1439         config_add_entry(config, entry);
1440
1441         return entry;
1442 }
1443
1444 static BOOLEAN config_entry_add_loader_auto(Config *config, EFI_HANDLE *device, EFI_FILE *root_dir, CHAR16 *loaded_image_path,
1445                                          CHAR16 *file, CHAR16 key, CHAR16 *title, CHAR16 *loader) {
1446         EFI_FILE_HANDLE handle;
1447         ConfigEntry *entry;
1448         EFI_STATUS err;
1449
1450         /* do not add an entry for ourselves */
1451         if (loaded_image_path && StriCmp(loader, loaded_image_path) == 0)
1452                 return FALSE;
1453
1454         /* check existence */
1455         err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &handle, loader, EFI_FILE_MODE_READ, 0ULL);
1456         if (EFI_ERROR(err))
1457                 return FALSE;
1458         uefi_call_wrapper(handle->Close, 1, handle);
1459
1460         entry = config_entry_add_loader(config, device, LOADER_UNDEFINED, file, key, title, loader);
1461         if (!entry)
1462                 return FALSE;
1463
1464         /* do not boot right away into auto-detected entries */
1465         entry->no_autoselect = TRUE;
1466
1467         return TRUE;
1468 }
1469
1470 static VOID config_entry_add_osx(Config *config) {
1471         EFI_STATUS err;
1472         UINTN handle_count = 0;
1473         EFI_HANDLE *handles = NULL;
1474
1475         err = LibLocateHandle(ByProtocol, &FileSystemProtocol, NULL, &handle_count, &handles);
1476         if (!EFI_ERROR(err)) {
1477                 UINTN i;
1478
1479                 for (i = 0; i < handle_count; i++) {
1480                         EFI_FILE *root;
1481                         BOOLEAN found;
1482
1483                         root = LibOpenRoot(handles[i]);
1484                         if (!root)
1485                                 continue;
1486                         found = config_entry_add_loader_auto(config, handles[i], root, NULL, L"auto-osx", 'a', L"OS X",
1487                                                              L"\\System\\Library\\CoreServices\\boot.efi");
1488                         uefi_call_wrapper(root->Close, 1, root);
1489                         if (found)
1490                                 break;
1491                 }
1492
1493                 FreePool(handles);
1494         }
1495 }
1496
1497 static VOID config_entry_add_linux( Config *config, EFI_LOADED_IMAGE *loaded_image, EFI_FILE *root_dir) {
1498         EFI_FILE_HANDLE linux_dir;
1499         EFI_STATUS err;
1500         ConfigEntry *entry;
1501
1502         err = uefi_call_wrapper(root_dir->Open, 5, root_dir, &linux_dir, L"\\EFI\\Linux", EFI_FILE_MODE_READ, 0ULL);
1503         if (!EFI_ERROR(err)) {
1504                 for (;;) {
1505                         CHAR16 buf[256];
1506                         UINTN bufsize;
1507                         EFI_FILE_INFO *f;
1508                         CHAR8 *sections[] = {
1509                                 (UINT8 *)".osrel",
1510                                 (UINT8 *)".cmdline",
1511                                 NULL
1512                         };
1513                         UINTN offs[ELEMENTSOF(sections)-1] = {};
1514                         UINTN szs[ELEMENTSOF(sections)-1] = {};
1515                         UINTN addrs[ELEMENTSOF(sections)-1] = {};
1516                         CHAR8 *content = NULL;
1517                         UINTN len;
1518                         CHAR8 *line;
1519                         UINTN pos = 0;
1520                         CHAR8 *key, *value;
1521                         CHAR16 *os_name = NULL;
1522                         CHAR16 *os_id = NULL;
1523                         CHAR16 *os_version = NULL;
1524                         CHAR16 *os_build = NULL;
1525
1526                         bufsize = sizeof(buf);
1527                         err = uefi_call_wrapper(linux_dir->Read, 3, linux_dir, &bufsize, buf);
1528                         if (bufsize == 0 || EFI_ERROR(err))
1529                                 break;
1530
1531                         f = (EFI_FILE_INFO *) buf;
1532                         if (f->FileName[0] == '.')
1533                                 continue;
1534                         if (f->Attribute & EFI_FILE_DIRECTORY)
1535                                 continue;
1536                         len = StrLen(f->FileName);
1537                         if (len < 5)
1538                                 continue;
1539                         if (StriCmp(f->FileName + len - 4, L".efi") != 0)
1540                                 continue;
1541
1542                         /* look for .osrel and .cmdline sections in the .efi binary */
1543                         err = pefile_locate_sections(linux_dir, f->FileName, sections, addrs, offs, szs);
1544                         if (EFI_ERROR(err))
1545                                 continue;
1546
1547                         len = file_read(linux_dir, f->FileName, offs[0], szs[0], &content);
1548                         if (len <= 0)
1549                                 continue;
1550
1551                         /* read properties from the embedded os-release file */
1552                         line = content;
1553                         while ((line = line_get_key_value(content, (CHAR8 *)"=", &pos, &key, &value))) {
1554                                 if (strcmpa((CHAR8 *)"PRETTY_NAME", key) == 0) {
1555                                         FreePool(os_name);
1556                                         os_name = stra_to_str(value);
1557                                         continue;
1558                                 }
1559
1560                                 if (strcmpa((CHAR8 *)"ID", key) == 0) {
1561                                         FreePool(os_id);
1562                                         os_id = stra_to_str(value);
1563                                         continue;
1564                                 }
1565
1566                                 if (strcmpa((CHAR8 *)"VERSION_ID", key) == 0) {
1567                                         FreePool(os_version);
1568                                         os_version = stra_to_str(value);
1569                                         continue;
1570                                 }
1571
1572                                 if (strcmpa((CHAR8 *)"BUILD_ID", key) == 0) {
1573                                         FreePool(os_build);
1574                                         os_build = stra_to_str(value);
1575                                         continue;
1576                                 }
1577                         }
1578
1579                         if (os_name && os_id && (os_version || os_build)) {
1580                                 CHAR16 *conf;
1581                                 CHAR16 *path;
1582                                 CHAR16 *cmdline;
1583
1584                                 conf = PoolPrint(L"%s-%s", os_id, os_version ? : os_build);
1585                                 path = PoolPrint(L"\\EFI\\Linux\\%s", f->FileName);
1586                                 entry = config_entry_add_loader(config, loaded_image->DeviceHandle, LOADER_LINUX, conf, 'l', os_name, path);
1587
1588                                 FreePool(content);
1589                                 /* read the embedded cmdline file */
1590                                 len = file_read(linux_dir, f->FileName, offs[1], szs[1] - 1 , &content);
1591                                 if (len > 0) {
1592                                         cmdline = stra_to_str(content);
1593                                         entry->options = cmdline;
1594                                         cmdline = NULL;
1595                                 }
1596                                 FreePool(cmdline);
1597                                 FreePool(conf);
1598                                 FreePool(path);
1599                         }
1600
1601                         FreePool(os_name);
1602                         FreePool(os_id);
1603                         FreePool(os_version);
1604                         FreePool(os_build);
1605                         FreePool(content);
1606                 }
1607                 uefi_call_wrapper(linux_dir->Close, 1, linux_dir);
1608         }
1609 }
1610
1611 static EFI_STATUS image_start(EFI_HANDLE parent_image, const Config *config, const ConfigEntry *entry) {
1612         EFI_HANDLE image;
1613         EFI_DEVICE_PATH *path;
1614         CHAR16 *options;
1615         EFI_STATUS err;
1616
1617         path = FileDevicePath(entry->device, entry->loader);
1618         if (!path) {
1619                 Print(L"Error getting device path.");
1620                 uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1621                 return EFI_INVALID_PARAMETER;
1622         }
1623
1624         err = uefi_call_wrapper(BS->LoadImage, 6, FALSE, parent_image, path, NULL, 0, &image);
1625         if (EFI_ERROR(err)) {
1626                 Print(L"Error loading %s: %r", entry->loader, err);
1627                 uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1628                 goto out;
1629         }
1630
1631         if (config->options_edit)
1632                 options = config->options_edit;
1633         else if (entry->options)
1634                 options = entry->options;
1635         else
1636                 options = NULL;
1637         if (options) {
1638                 EFI_LOADED_IMAGE *loaded_image;
1639
1640                 err = uefi_call_wrapper(BS->OpenProtocol, 6, image, &LoadedImageProtocol, (VOID **)&loaded_image,
1641                                         parent_image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
1642                 if (EFI_ERROR(err)) {
1643                         Print(L"Error getting LoadedImageProtocol handle: %r", err);
1644                         uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1645                         goto out_unload;
1646                 }
1647                 loaded_image->LoadOptions = options;
1648                 loaded_image->LoadOptionsSize = (StrLen(loaded_image->LoadOptions)+1) * sizeof(CHAR16);
1649         }
1650
1651         efivar_set_time_usec(L"LoaderTimeExecUSec", 0);
1652         err = uefi_call_wrapper(BS->StartImage, 3, image, NULL, NULL);
1653 out_unload:
1654         uefi_call_wrapper(BS->UnloadImage, 1, image);
1655 out:
1656         FreePool(path);
1657         return err;
1658 }
1659
1660 static EFI_STATUS reboot_into_firmware(VOID) {
1661         CHAR8 *b;
1662         UINTN size;
1663         UINT64 osind;
1664         EFI_STATUS err;
1665
1666         osind = EFI_OS_INDICATIONS_BOOT_TO_FW_UI;
1667
1668         err = efivar_get_raw(&global_guid, L"OsIndications", &b, &size);
1669         if (!EFI_ERROR(err))
1670                 osind |= (UINT64)*b;
1671         FreePool(b);
1672
1673         err = efivar_set_raw(&global_guid, L"OsIndications", (CHAR8 *)&osind, sizeof(UINT64), TRUE);
1674         if (EFI_ERROR(err))
1675                 return err;
1676
1677         err = uefi_call_wrapper(RT->ResetSystem, 4, EfiResetCold, EFI_SUCCESS, 0, NULL);
1678         Print(L"Error calling ResetSystem: %r", err);
1679         uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1680         return err;
1681 }
1682
1683 static VOID config_free(Config *config) {
1684         UINTN i;
1685
1686         for (i = 0; i < config->entry_count; i++)
1687                 config_entry_free(config->entries[i]);
1688         FreePool(config->entries);
1689         FreePool(config->entry_default_pattern);
1690         FreePool(config->options_edit);
1691         FreePool(config->entry_oneshot);
1692 }
1693
1694 EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
1695         CHAR16 *s;
1696         CHAR8 *b;
1697         UINTN size;
1698         EFI_LOADED_IMAGE *loaded_image;
1699         EFI_FILE *root_dir;
1700         CHAR16 *loaded_image_path;
1701         EFI_STATUS err;
1702         Config config;
1703         UINT64 init_usec;
1704         BOOLEAN menu = FALSE;
1705         CHAR16 uuid[37];
1706
1707         InitializeLib(image, sys_table);
1708         init_usec = time_usec();
1709         efivar_set_time_usec(L"LoaderTimeInitUSec", init_usec);
1710         efivar_set(L"LoaderInfo", L"systemd-boot " VERSION, FALSE);
1711         s = PoolPrint(L"%s %d.%02d", ST->FirmwareVendor, ST->FirmwareRevision >> 16, ST->FirmwareRevision & 0xffff);
1712         efivar_set(L"LoaderFirmwareInfo", s, FALSE);
1713         FreePool(s);
1714         s = PoolPrint(L"UEFI %d.%02d", ST->Hdr.Revision >> 16, ST->Hdr.Revision & 0xffff);
1715         efivar_set(L"LoaderFirmwareType", s, FALSE);
1716         FreePool(s);
1717
1718         err = uefi_call_wrapper(BS->OpenProtocol, 6, image, &LoadedImageProtocol, (VOID **)&loaded_image,
1719                                 image, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
1720         if (EFI_ERROR(err)) {
1721                 Print(L"Error getting a LoadedImageProtocol handle: %r ", err);
1722                 uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1723                 return err;
1724         }
1725
1726         /* export the device path this image is started from */
1727         if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS)
1728                 efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
1729
1730         root_dir = LibOpenRoot(loaded_image->DeviceHandle);
1731         if (!root_dir) {
1732                 Print(L"Unable to open root directory: %r ", err);
1733                 uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1734                 return EFI_LOAD_ERROR;
1735         }
1736
1737
1738         /* the filesystem path to this image, to prevent adding ourselves to the menu */
1739         loaded_image_path = DevicePathToStr(loaded_image->FilePath);
1740         efivar_set(L"LoaderImageIdentifier", loaded_image_path, FALSE);
1741
1742         ZeroMem(&config, sizeof(Config));
1743         config_load_defaults(&config, root_dir);
1744
1745         /* scan /EFI/Linux/ directory */
1746         config_entry_add_linux(&config, loaded_image, root_dir);
1747
1748         /* scan /loader/entries/\*.conf files */
1749         config_load_entries(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path);
1750
1751         /* sort entries after version number */
1752         config_sort_entries(&config);
1753
1754         /* if we find some well-known loaders, add them to the end of the list */
1755         config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
1756                                      L"auto-windows", 'w', L"Windows Boot Manager", L"\\EFI\\Microsoft\\Boot\\bootmgfw.efi");
1757         config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
1758                                      L"auto-efi-shell", 's', L"EFI Shell", L"\\shell" EFI_MACHINE_TYPE_NAME ".efi");
1759         config_entry_add_loader_auto(&config, loaded_image->DeviceHandle, root_dir, loaded_image_path,
1760                                      L"auto-efi-default", '\0', L"EFI Default Loader", L"\\EFI\\Boot\\boot" EFI_MACHINE_TYPE_NAME ".efi");
1761         config_entry_add_osx(&config);
1762
1763         if (efivar_get_raw(&global_guid, L"OsIndicationsSupported", &b, &size) == EFI_SUCCESS) {
1764                 UINT64 osind = (UINT64)*b;
1765
1766                 if (osind & EFI_OS_INDICATIONS_BOOT_TO_FW_UI)
1767                         config_entry_add_call(&config, L"Reboot Into Firmware Interface", reboot_into_firmware);
1768                 FreePool(b);
1769         }
1770
1771         if (config.entry_count == 0) {
1772                 Print(L"No loader found. Configuration files in \\loader\\entries\\*.conf are needed.");
1773                 uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1774                 goto out;
1775         }
1776
1777         config_title_generate(&config);
1778
1779         /* select entry by configured pattern or EFI LoaderDefaultEntry= variable*/
1780         config_default_entry_select(&config);
1781
1782         /* if no configured entry to select from was found, enable the menu */
1783         if (config.idx_default == -1) {
1784                 config.idx_default = 0;
1785                 if (config.timeout_sec == 0)
1786                         config.timeout_sec = 10;
1787         }
1788
1789         /* select entry or show menu when key is pressed or timeout is set */
1790         if (config.timeout_sec == 0) {
1791                 UINT64 key;
1792
1793                 err = console_key_read(&key, FALSE);
1794                 if (!EFI_ERROR(err)) {
1795                         INT16 idx;
1796
1797                         /* find matching key in config entries */
1798                         idx = entry_lookup_key(&config, config.idx_default, KEYCHAR(key));
1799                         if (idx >= 0)
1800                                 config.idx_default = idx;
1801                         else
1802                                 menu = TRUE;
1803                 }
1804         } else
1805                 menu = TRUE;
1806
1807         for (;;) {
1808                 ConfigEntry *entry;
1809
1810                 entry = config.entries[config.idx_default];
1811                 if (menu) {
1812                         efivar_set_time_usec(L"LoaderTimeMenuUSec", 0);
1813                         uefi_call_wrapper(BS->SetWatchdogTimer, 4, 0, 0x10000, 0, NULL);
1814                         if (!menu_run(&config, &entry, loaded_image_path))
1815                                 break;
1816
1817                         /* run special entry like "reboot" */
1818                         if (entry->call) {
1819                                 entry->call();
1820                                 continue;
1821                         }
1822                 }
1823
1824                 /* export the selected boot entry to the system */
1825                 efivar_set(L"LoaderEntrySelected", entry->file, FALSE);
1826
1827                 uefi_call_wrapper(BS->SetWatchdogTimer, 4, 5 * 60, 0x10000, 0, NULL);
1828                 err = image_start(image, &config, entry);
1829                 if (EFI_ERROR(err)) {
1830                         graphics_mode(FALSE);
1831                         Print(L"\nFailed to execute %s (%s): %r\n", entry->title, entry->loader, err);
1832                         uefi_call_wrapper(BS->Stall, 1, 3 * 1000 * 1000);
1833                         goto out;
1834                 }
1835
1836                 menu = TRUE;
1837                 config.timeout_sec = 0;
1838         }
1839         err = EFI_SUCCESS;
1840 out:
1841         FreePool(loaded_image_path);
1842         config_free(&config);
1843         uefi_call_wrapper(root_dir->Close, 1, root_dir);
1844         uefi_call_wrapper(BS->CloseProtocol, 4, image, &LoadedImageProtocol, image, NULL);
1845         return err;
1846 }