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