1 /* 2 * EFI application boot time services 3 * 4 * Copyright (c) 2016 Alexander Graf 5 * 6 * SPDX-License-Identifier: GPL-2.0+ 7 */ 8 9 #include <common.h> 10 #include <efi_loader.h> 11 #include <malloc.h> 12 #include <asm/global_data.h> 13 #include <libfdt_env.h> 14 #include <u-boot/crc.h> 15 #include <bootm.h> 16 #include <inttypes.h> 17 #include <watchdog.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 /* This list contains all the EFI objects our payload has access to */ 22 LIST_HEAD(efi_obj_list); 23 24 /* 25 * If we're running on nasty systems (32bit ARM booting into non-EFI Linux) 26 * we need to do trickery with caches. Since we don't want to break the EFI 27 * aware boot path, only apply hacks when loading exiting directly (breaking 28 * direct Linux EFI booting along the way - oh well). 29 */ 30 static bool efi_is_direct_boot = true; 31 32 /* 33 * EFI can pass arbitrary additional "tables" containing vendor specific 34 * information to the payload. One such table is the FDT table which contains 35 * a pointer to a flattened device tree blob. 36 * 37 * In most cases we want to pass an FDT to the payload, so reserve one slot of 38 * config table space for it. The pointer gets populated by do_bootefi_exec(). 39 */ 40 static struct efi_configuration_table __efi_runtime_data efi_conf_table[2]; 41 42 #ifdef CONFIG_ARM 43 /* 44 * The "gd" pointer lives in a register on ARM and AArch64 that we declare 45 * fixed when compiling U-Boot. However, the payload does not know about that 46 * restriction so we need to manually swap its and our view of that register on 47 * EFI callback entry/exit. 48 */ 49 static volatile void *efi_gd, *app_gd; 50 #endif 51 52 /* Called from do_bootefi_exec() */ 53 void efi_save_gd(void) 54 { 55 #ifdef CONFIG_ARM 56 efi_gd = gd; 57 #endif 58 } 59 60 /* Called on every callback entry */ 61 void efi_restore_gd(void) 62 { 63 #ifdef CONFIG_ARM 64 /* Only restore if we're already in EFI context */ 65 if (!efi_gd) 66 return; 67 68 if (gd != efi_gd) 69 app_gd = gd; 70 gd = efi_gd; 71 #endif 72 } 73 74 /* Called on every callback exit */ 75 efi_status_t efi_exit_func(efi_status_t ret) 76 { 77 #ifdef CONFIG_ARM 78 gd = app_gd; 79 #endif 80 81 return ret; 82 } 83 84 static efi_status_t efi_unsupported(const char *funcname) 85 { 86 debug("EFI: App called into unimplemented function %s\n", funcname); 87 return EFI_EXIT(EFI_UNSUPPORTED); 88 } 89 90 static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) 91 { 92 return memcmp(g1, g2, sizeof(efi_guid_t)); 93 } 94 95 static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl) 96 { 97 EFI_ENTRY("0x%lx", new_tpl); 98 return EFI_EXIT(0); 99 } 100 101 static void EFIAPI efi_restore_tpl(unsigned long old_tpl) 102 { 103 EFI_ENTRY("0x%lx", old_tpl); 104 EFI_EXIT(efi_unsupported(__func__)); 105 } 106 107 efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, 108 unsigned long pages, 109 uint64_t *memory) 110 { 111 efi_status_t r; 112 113 EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); 114 r = efi_allocate_pages(type, memory_type, pages, memory); 115 return EFI_EXIT(r); 116 } 117 118 efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, unsigned long pages) 119 { 120 efi_status_t r; 121 122 EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); 123 r = efi_free_pages(memory, pages); 124 return EFI_EXIT(r); 125 } 126 127 efi_status_t EFIAPI efi_get_memory_map_ext(unsigned long *memory_map_size, 128 struct efi_mem_desc *memory_map, 129 unsigned long *map_key, 130 unsigned long *descriptor_size, 131 uint32_t *descriptor_version) 132 { 133 efi_status_t r; 134 135 EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, 136 map_key, descriptor_size, descriptor_version); 137 r = efi_get_memory_map(memory_map_size, memory_map, map_key, 138 descriptor_size, descriptor_version); 139 return EFI_EXIT(r); 140 } 141 142 static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, 143 unsigned long size, 144 void **buffer) 145 { 146 efi_status_t r; 147 148 EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); 149 r = efi_allocate_pool(pool_type, size, buffer); 150 return EFI_EXIT(r); 151 } 152 153 static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) 154 { 155 efi_status_t r; 156 157 EFI_ENTRY("%p", buffer); 158 r = efi_free_pool(buffer); 159 return EFI_EXIT(r); 160 } 161 162 /* 163 * Our event capabilities are very limited. Only support a single 164 * event to exist, so we don't need to maintain lists. 165 */ 166 static struct { 167 enum efi_event_type type; 168 u32 trigger_type; 169 u32 trigger_time; 170 u64 trigger_next; 171 unsigned long notify_tpl; 172 void (EFIAPI *notify_function) (void *event, void *context); 173 void *notify_context; 174 } efi_event = { 175 /* Disable timers on bootup */ 176 .trigger_next = -1ULL, 177 }; 178 179 static efi_status_t EFIAPI efi_create_event( 180 enum efi_event_type type, ulong notify_tpl, 181 void (EFIAPI *notify_function) (void *event, 182 void *context), 183 void *notify_context, void **event) 184 { 185 EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function, 186 notify_context); 187 if (efi_event.notify_function) { 188 /* We only support one event at a time */ 189 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 190 } 191 192 efi_event.type = type; 193 efi_event.notify_tpl = notify_tpl; 194 efi_event.notify_function = notify_function; 195 efi_event.notify_context = notify_context; 196 *event = &efi_event; 197 198 return EFI_EXIT(EFI_SUCCESS); 199 } 200 201 /* 202 * Our timers have to work without interrupts, so we check whenever keyboard 203 * input or disk accesses happen if enough time elapsed for it to fire. 204 */ 205 void efi_timer_check(void) 206 { 207 u64 now = timer_get_us(); 208 209 if (now >= efi_event.trigger_next) { 210 /* Triggering! */ 211 if (efi_event.trigger_type == EFI_TIMER_PERIODIC) 212 efi_event.trigger_next += efi_event.trigger_time / 10; 213 if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL)) 214 efi_event.notify_function(&efi_event, 215 efi_event.notify_context); 216 } 217 218 WATCHDOG_RESET(); 219 } 220 221 static efi_status_t EFIAPI efi_set_timer(void *event, int type, 222 uint64_t trigger_time) 223 { 224 /* We don't have 64bit division available everywhere, so limit timer 225 * distances to 32bit bits. */ 226 u32 trigger32 = trigger_time; 227 228 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); 229 230 if (trigger32 < trigger_time) { 231 printf("WARNING: Truncating timer from %"PRIx64" to %x\n", 232 trigger_time, trigger32); 233 } 234 235 if (event != &efi_event) { 236 /* We only support one event at a time */ 237 return EFI_EXIT(EFI_INVALID_PARAMETER); 238 } 239 240 switch (type) { 241 case EFI_TIMER_STOP: 242 efi_event.trigger_next = -1ULL; 243 break; 244 case EFI_TIMER_PERIODIC: 245 case EFI_TIMER_RELATIVE: 246 efi_event.trigger_next = timer_get_us() + (trigger32 / 10); 247 break; 248 default: 249 return EFI_EXIT(EFI_INVALID_PARAMETER); 250 } 251 efi_event.trigger_type = type; 252 efi_event.trigger_time = trigger_time; 253 254 return EFI_EXIT(EFI_SUCCESS); 255 } 256 257 static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, 258 void *event, unsigned long *index) 259 { 260 u64 now; 261 262 EFI_ENTRY("%ld, %p, %p", num_events, event, index); 263 264 now = timer_get_us(); 265 while (now < efi_event.trigger_next) { } 266 efi_timer_check(); 267 268 return EFI_EXIT(EFI_SUCCESS); 269 } 270 271 static efi_status_t EFIAPI efi_signal_event(void *event) 272 { 273 EFI_ENTRY("%p", event); 274 return EFI_EXIT(EFI_SUCCESS); 275 } 276 277 static efi_status_t EFIAPI efi_close_event(void *event) 278 { 279 EFI_ENTRY("%p", event); 280 efi_event.trigger_next = -1ULL; 281 return EFI_EXIT(EFI_SUCCESS); 282 } 283 284 static efi_status_t EFIAPI efi_check_event(void *event) 285 { 286 EFI_ENTRY("%p", event); 287 return EFI_EXIT(EFI_NOT_READY); 288 } 289 290 static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, 291 efi_guid_t *protocol, int protocol_interface_type, 292 void *protocol_interface) 293 { 294 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, 295 protocol_interface); 296 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 297 } 298 static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, 299 efi_guid_t *protocol, void *old_interface, 300 void *new_interface) 301 { 302 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, 303 new_interface); 304 return EFI_EXIT(EFI_ACCESS_DENIED); 305 } 306 307 static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, 308 efi_guid_t *protocol, void *protocol_interface) 309 { 310 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); 311 return EFI_EXIT(EFI_NOT_FOUND); 312 } 313 314 static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, 315 void *event, 316 void **registration) 317 { 318 EFI_ENTRY("%p, %p, %p", protocol, event, registration); 319 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 320 } 321 322 static int efi_search(enum efi_locate_search_type search_type, 323 efi_guid_t *protocol, void *search_key, 324 struct efi_object *efiobj) 325 { 326 int i; 327 328 switch (search_type) { 329 case all_handles: 330 return 0; 331 case by_register_notify: 332 return -1; 333 case by_protocol: 334 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 335 const efi_guid_t *guid = efiobj->protocols[i].guid; 336 if (guid && !guidcmp(guid, protocol)) 337 return 0; 338 } 339 return -1; 340 } 341 342 return -1; 343 } 344 345 static efi_status_t EFIAPI efi_locate_handle( 346 enum efi_locate_search_type search_type, 347 efi_guid_t *protocol, void *search_key, 348 unsigned long *buffer_size, efi_handle_t *buffer) 349 { 350 struct list_head *lhandle; 351 unsigned long size = 0; 352 353 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 354 buffer_size, buffer); 355 356 /* Count how much space we need */ 357 list_for_each(lhandle, &efi_obj_list) { 358 struct efi_object *efiobj; 359 efiobj = list_entry(lhandle, struct efi_object, link); 360 if (!efi_search(search_type, protocol, search_key, efiobj)) { 361 size += sizeof(void*); 362 } 363 } 364 365 if (*buffer_size < size) { 366 *buffer_size = size; 367 return EFI_EXIT(EFI_BUFFER_TOO_SMALL); 368 } 369 370 /* Then fill the array */ 371 list_for_each(lhandle, &efi_obj_list) { 372 struct efi_object *efiobj; 373 efiobj = list_entry(lhandle, struct efi_object, link); 374 if (!efi_search(search_type, protocol, search_key, efiobj)) { 375 *(buffer++) = efiobj->handle; 376 } 377 } 378 379 *buffer_size = size; 380 return EFI_EXIT(EFI_SUCCESS); 381 } 382 383 static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, 384 struct efi_device_path **device_path, 385 efi_handle_t *device) 386 { 387 EFI_ENTRY("%p, %p, %p", protocol, device_path, device); 388 return EFI_EXIT(EFI_NOT_FOUND); 389 } 390 391 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) 392 { 393 int i; 394 395 /* Check for guid override */ 396 for (i = 0; i < systab.nr_tables; i++) { 397 if (!guidcmp(guid, &efi_conf_table[i].guid)) { 398 efi_conf_table[i].table = table; 399 return EFI_SUCCESS; 400 } 401 } 402 403 /* No override, check for overflow */ 404 if (i >= ARRAY_SIZE(efi_conf_table)) 405 return EFI_OUT_OF_RESOURCES; 406 407 /* Add a new entry */ 408 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); 409 efi_conf_table[i].table = table; 410 systab.nr_tables = i + 1; 411 412 return EFI_SUCCESS; 413 } 414 415 static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, 416 void *table) 417 { 418 EFI_ENTRY("%p, %p", guid, table); 419 return EFI_EXIT(efi_install_configuration_table(guid, table)); 420 } 421 422 static efi_status_t EFIAPI efi_load_image(bool boot_policy, 423 efi_handle_t parent_image, 424 struct efi_device_path *file_path, 425 void *source_buffer, 426 unsigned long source_size, 427 efi_handle_t *image_handle) 428 { 429 static struct efi_object loaded_image_info_obj = { 430 .protocols = { 431 { 432 .guid = &efi_guid_loaded_image, 433 .open = &efi_return_handle, 434 }, 435 }, 436 }; 437 struct efi_loaded_image *info; 438 struct efi_object *obj; 439 440 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, 441 file_path, source_buffer, source_size, image_handle); 442 info = malloc(sizeof(*info)); 443 obj = malloc(sizeof(loaded_image_info_obj)); 444 memset(info, 0, sizeof(*info)); 445 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); 446 obj->handle = info; 447 info->file_path = file_path; 448 info->reserved = efi_load_pe(source_buffer, info); 449 if (!info->reserved) { 450 free(info); 451 free(obj); 452 return EFI_EXIT(EFI_UNSUPPORTED); 453 } 454 455 *image_handle = info; 456 list_add_tail(&obj->link, &efi_obj_list); 457 458 return EFI_EXIT(EFI_SUCCESS); 459 } 460 461 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, 462 unsigned long *exit_data_size, 463 s16 **exit_data) 464 { 465 ulong (*entry)(void *image_handle, struct efi_system_table *st); 466 struct efi_loaded_image *info = image_handle; 467 468 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); 469 entry = info->reserved; 470 471 efi_is_direct_boot = false; 472 473 /* call the image! */ 474 if (setjmp(&info->exit_jmp)) { 475 /* We returned from the child image */ 476 return EFI_EXIT(info->exit_status); 477 } 478 479 entry(image_handle, &systab); 480 481 /* Should usually never get here */ 482 return EFI_EXIT(EFI_SUCCESS); 483 } 484 485 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, 486 efi_status_t exit_status, unsigned long exit_data_size, 487 int16_t *exit_data) 488 { 489 struct efi_loaded_image *loaded_image_info = (void*)image_handle; 490 491 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, 492 exit_data_size, exit_data); 493 494 loaded_image_info->exit_status = exit_status; 495 longjmp(&loaded_image_info->exit_jmp, 1); 496 497 panic("EFI application exited"); 498 } 499 500 static struct efi_object *efi_search_obj(void *handle) 501 { 502 struct list_head *lhandle; 503 504 list_for_each(lhandle, &efi_obj_list) { 505 struct efi_object *efiobj; 506 efiobj = list_entry(lhandle, struct efi_object, link); 507 if (efiobj->handle == handle) 508 return efiobj; 509 } 510 511 return NULL; 512 } 513 514 static efi_status_t EFIAPI efi_unload_image(void *image_handle) 515 { 516 struct efi_object *efiobj; 517 518 EFI_ENTRY("%p", image_handle); 519 efiobj = efi_search_obj(image_handle); 520 if (efiobj) 521 list_del(&efiobj->link); 522 523 return EFI_EXIT(EFI_SUCCESS); 524 } 525 526 static void efi_exit_caches(void) 527 { 528 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 529 /* 530 * Grub on 32bit ARM needs to have caches disabled before jumping into 531 * a zImage, but does not know of all cache layers. Give it a hand. 532 */ 533 if (efi_is_direct_boot) 534 cleanup_before_linux(); 535 #endif 536 } 537 538 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, 539 unsigned long map_key) 540 { 541 EFI_ENTRY("%p, %ld", image_handle, map_key); 542 543 board_quiesce_devices(); 544 545 /* Fix up caches for EFI payloads if necessary */ 546 efi_exit_caches(); 547 548 /* This stops all lingering devices */ 549 bootm_disable_interrupts(); 550 551 /* Give the payload some time to boot */ 552 WATCHDOG_RESET(); 553 554 return EFI_EXIT(EFI_SUCCESS); 555 } 556 557 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) 558 { 559 static uint64_t mono = 0; 560 EFI_ENTRY("%p", count); 561 *count = mono++; 562 return EFI_EXIT(EFI_SUCCESS); 563 } 564 565 static efi_status_t EFIAPI efi_stall(unsigned long microseconds) 566 { 567 EFI_ENTRY("%ld", microseconds); 568 udelay(microseconds); 569 return EFI_EXIT(EFI_SUCCESS); 570 } 571 572 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, 573 uint64_t watchdog_code, 574 unsigned long data_size, 575 uint16_t *watchdog_data) 576 { 577 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, 578 data_size, watchdog_data); 579 return EFI_EXIT(efi_unsupported(__func__)); 580 } 581 582 static efi_status_t EFIAPI efi_connect_controller( 583 efi_handle_t controller_handle, 584 efi_handle_t *driver_image_handle, 585 struct efi_device_path *remain_device_path, 586 bool recursive) 587 { 588 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, 589 remain_device_path, recursive); 590 return EFI_EXIT(EFI_NOT_FOUND); 591 } 592 593 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, 594 void *driver_image_handle, 595 void *child_handle) 596 { 597 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, 598 child_handle); 599 return EFI_EXIT(EFI_INVALID_PARAMETER); 600 } 601 602 static efi_status_t EFIAPI efi_close_protocol(void *handle, 603 efi_guid_t *protocol, 604 void *agent_handle, 605 void *controller_handle) 606 { 607 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, 608 controller_handle); 609 return EFI_EXIT(EFI_NOT_FOUND); 610 } 611 612 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, 613 efi_guid_t *protocol, 614 struct efi_open_protocol_info_entry **entry_buffer, 615 unsigned long *entry_count) 616 { 617 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, 618 entry_count); 619 return EFI_EXIT(EFI_NOT_FOUND); 620 } 621 622 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, 623 efi_guid_t ***protocol_buffer, 624 unsigned long *protocol_buffer_count) 625 { 626 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, 627 protocol_buffer_count); 628 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 629 } 630 631 static efi_status_t EFIAPI efi_locate_handle_buffer( 632 enum efi_locate_search_type search_type, 633 efi_guid_t *protocol, void *search_key, 634 unsigned long *no_handles, efi_handle_t **buffer) 635 { 636 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 637 no_handles, buffer); 638 return EFI_EXIT(EFI_NOT_FOUND); 639 } 640 641 static struct efi_class_map efi_class_maps[] = { 642 { 643 .guid = &efi_guid_console_control, 644 .interface = &efi_console_control 645 }, 646 }; 647 648 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, 649 void *registration, 650 void **protocol_interface) 651 { 652 int i; 653 654 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); 655 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { 656 struct efi_class_map *curmap = &efi_class_maps[i]; 657 if (!guidcmp(protocol, curmap->guid)) { 658 *protocol_interface = (void*)curmap->interface; 659 return EFI_EXIT(EFI_SUCCESS); 660 } 661 } 662 663 return EFI_EXIT(EFI_NOT_FOUND); 664 } 665 666 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( 667 void **handle, ...) 668 { 669 EFI_ENTRY("%p", handle); 670 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 671 } 672 673 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( 674 void *handle, ...) 675 { 676 EFI_ENTRY("%p", handle); 677 return EFI_EXIT(EFI_INVALID_PARAMETER); 678 } 679 680 static efi_status_t EFIAPI efi_calculate_crc32(void *data, 681 unsigned long data_size, 682 uint32_t *crc32_p) 683 { 684 EFI_ENTRY("%p, %ld", data, data_size); 685 *crc32_p = crc32(0, data, data_size); 686 return EFI_EXIT(EFI_SUCCESS); 687 } 688 689 static void EFIAPI efi_copy_mem(void *destination, void *source, 690 unsigned long length) 691 { 692 EFI_ENTRY("%p, %p, %ld", destination, source, length); 693 memcpy(destination, source, length); 694 } 695 696 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) 697 { 698 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); 699 memset(buffer, value, size); 700 } 701 702 static efi_status_t EFIAPI efi_open_protocol( 703 void *handle, efi_guid_t *protocol, 704 void **protocol_interface, void *agent_handle, 705 void *controller_handle, uint32_t attributes) 706 { 707 struct list_head *lhandle; 708 int i; 709 efi_status_t r = EFI_UNSUPPORTED; 710 711 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, 712 protocol_interface, agent_handle, controller_handle, 713 attributes); 714 list_for_each(lhandle, &efi_obj_list) { 715 struct efi_object *efiobj; 716 efiobj = list_entry(lhandle, struct efi_object, link); 717 718 if (efiobj->handle != handle) 719 continue; 720 721 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 722 struct efi_handler *handler = &efiobj->protocols[i]; 723 const efi_guid_t *hprotocol = handler->guid; 724 if (!hprotocol) 725 break; 726 if (!guidcmp(hprotocol, protocol)) { 727 r = handler->open(handle, protocol, 728 protocol_interface, agent_handle, 729 controller_handle, attributes); 730 goto out; 731 } 732 } 733 } 734 735 out: 736 return EFI_EXIT(r); 737 } 738 739 static efi_status_t EFIAPI efi_handle_protocol(void *handle, 740 efi_guid_t *protocol, 741 void **protocol_interface) 742 { 743 return efi_open_protocol(handle, protocol, protocol_interface, 744 NULL, NULL, 0); 745 } 746 747 static const struct efi_boot_services efi_boot_services = { 748 .hdr = { 749 .headersize = sizeof(struct efi_table_hdr), 750 }, 751 .raise_tpl = efi_raise_tpl, 752 .restore_tpl = efi_restore_tpl, 753 .allocate_pages = efi_allocate_pages_ext, 754 .free_pages = efi_free_pages_ext, 755 .get_memory_map = efi_get_memory_map_ext, 756 .allocate_pool = efi_allocate_pool_ext, 757 .free_pool = efi_free_pool_ext, 758 .create_event = efi_create_event, 759 .set_timer = efi_set_timer, 760 .wait_for_event = efi_wait_for_event, 761 .signal_event = efi_signal_event, 762 .close_event = efi_close_event, 763 .check_event = efi_check_event, 764 .install_protocol_interface = efi_install_protocol_interface, 765 .reinstall_protocol_interface = efi_reinstall_protocol_interface, 766 .uninstall_protocol_interface = efi_uninstall_protocol_interface, 767 .handle_protocol = efi_handle_protocol, 768 .reserved = NULL, 769 .register_protocol_notify = efi_register_protocol_notify, 770 .locate_handle = efi_locate_handle, 771 .locate_device_path = efi_locate_device_path, 772 .install_configuration_table = efi_install_configuration_table_ext, 773 .load_image = efi_load_image, 774 .start_image = efi_start_image, 775 .exit = efi_exit, 776 .unload_image = efi_unload_image, 777 .exit_boot_services = efi_exit_boot_services, 778 .get_next_monotonic_count = efi_get_next_monotonic_count, 779 .stall = efi_stall, 780 .set_watchdog_timer = efi_set_watchdog_timer, 781 .connect_controller = efi_connect_controller, 782 .disconnect_controller = efi_disconnect_controller, 783 .open_protocol = efi_open_protocol, 784 .close_protocol = efi_close_protocol, 785 .open_protocol_information = efi_open_protocol_information, 786 .protocols_per_handle = efi_protocols_per_handle, 787 .locate_handle_buffer = efi_locate_handle_buffer, 788 .locate_protocol = efi_locate_protocol, 789 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, 790 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, 791 .calculate_crc32 = efi_calculate_crc32, 792 .copy_mem = efi_copy_mem, 793 .set_mem = efi_set_mem, 794 }; 795 796 797 static uint16_t __efi_runtime_data firmware_vendor[] = 798 { 'D','a','s',' ','U','-','b','o','o','t',0 }; 799 800 struct efi_system_table __efi_runtime_data systab = { 801 .hdr = { 802 .signature = EFI_SYSTEM_TABLE_SIGNATURE, 803 .revision = 0x20005, /* 2.5 */ 804 .headersize = sizeof(struct efi_table_hdr), 805 }, 806 .fw_vendor = (long)firmware_vendor, 807 .con_in = (void*)&efi_con_in, 808 .con_out = (void*)&efi_con_out, 809 .std_err = (void*)&efi_con_out, 810 .runtime = (void*)&efi_runtime_services, 811 .boottime = (void*)&efi_boot_services, 812 .nr_tables = 0, 813 .tables = (void*)efi_conf_table, 814 }; 815