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 efi_event.notify_function(&efi_event, efi_event.notify_context); 214 } 215 216 WATCHDOG_RESET(); 217 } 218 219 static efi_status_t EFIAPI efi_set_timer(void *event, int type, 220 uint64_t trigger_time) 221 { 222 /* We don't have 64bit division available everywhere, so limit timer 223 * distances to 32bit bits. */ 224 u32 trigger32 = trigger_time; 225 226 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); 227 228 if (trigger32 < trigger_time) { 229 printf("WARNING: Truncating timer from %"PRIx64" to %x\n", 230 trigger_time, trigger32); 231 } 232 233 if (event != &efi_event) { 234 /* We only support one event at a time */ 235 return EFI_EXIT(EFI_INVALID_PARAMETER); 236 } 237 238 switch (type) { 239 case EFI_TIMER_STOP: 240 efi_event.trigger_next = -1ULL; 241 break; 242 case EFI_TIMER_PERIODIC: 243 case EFI_TIMER_RELATIVE: 244 efi_event.trigger_next = timer_get_us() + (trigger32 / 10); 245 break; 246 default: 247 return EFI_EXIT(EFI_INVALID_PARAMETER); 248 } 249 efi_event.trigger_type = type; 250 efi_event.trigger_time = trigger_time; 251 252 return EFI_EXIT(EFI_SUCCESS); 253 } 254 255 static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, 256 void *event, unsigned long *index) 257 { 258 u64 now; 259 260 EFI_ENTRY("%ld, %p, %p", num_events, event, index); 261 262 now = timer_get_us(); 263 while (now < efi_event.trigger_next) { } 264 efi_timer_check(); 265 266 return EFI_EXIT(EFI_SUCCESS); 267 } 268 269 static efi_status_t EFIAPI efi_signal_event(void *event) 270 { 271 EFI_ENTRY("%p", event); 272 return EFI_EXIT(EFI_SUCCESS); 273 } 274 275 static efi_status_t EFIAPI efi_close_event(void *event) 276 { 277 EFI_ENTRY("%p", event); 278 efi_event.trigger_next = -1ULL; 279 return EFI_EXIT(EFI_SUCCESS); 280 } 281 282 static efi_status_t EFIAPI efi_check_event(void *event) 283 { 284 EFI_ENTRY("%p", event); 285 return EFI_EXIT(EFI_NOT_READY); 286 } 287 288 static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, 289 efi_guid_t *protocol, int protocol_interface_type, 290 void *protocol_interface) 291 { 292 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, 293 protocol_interface); 294 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 295 } 296 static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, 297 efi_guid_t *protocol, void *old_interface, 298 void *new_interface) 299 { 300 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, 301 new_interface); 302 return EFI_EXIT(EFI_ACCESS_DENIED); 303 } 304 305 static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, 306 efi_guid_t *protocol, void *protocol_interface) 307 { 308 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); 309 return EFI_EXIT(EFI_NOT_FOUND); 310 } 311 312 static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, 313 void *event, 314 void **registration) 315 { 316 EFI_ENTRY("%p, %p, %p", protocol, event, registration); 317 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 318 } 319 320 static int efi_search(enum efi_locate_search_type search_type, 321 efi_guid_t *protocol, void *search_key, 322 struct efi_object *efiobj) 323 { 324 int i; 325 326 switch (search_type) { 327 case all_handles: 328 return 0; 329 case by_register_notify: 330 return -1; 331 case by_protocol: 332 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 333 const efi_guid_t *guid = efiobj->protocols[i].guid; 334 if (guid && !guidcmp(guid, protocol)) 335 return 0; 336 } 337 return -1; 338 } 339 340 return -1; 341 } 342 343 static efi_status_t EFIAPI efi_locate_handle( 344 enum efi_locate_search_type search_type, 345 efi_guid_t *protocol, void *search_key, 346 unsigned long *buffer_size, efi_handle_t *buffer) 347 { 348 struct list_head *lhandle; 349 unsigned long size = 0; 350 351 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 352 buffer_size, buffer); 353 354 /* Count how much space we need */ 355 list_for_each(lhandle, &efi_obj_list) { 356 struct efi_object *efiobj; 357 efiobj = list_entry(lhandle, struct efi_object, link); 358 if (!efi_search(search_type, protocol, search_key, efiobj)) { 359 size += sizeof(void*); 360 } 361 } 362 363 if (*buffer_size < size) { 364 *buffer_size = size; 365 return EFI_EXIT(EFI_BUFFER_TOO_SMALL); 366 } 367 368 /* Then fill the array */ 369 list_for_each(lhandle, &efi_obj_list) { 370 struct efi_object *efiobj; 371 efiobj = list_entry(lhandle, struct efi_object, link); 372 if (!efi_search(search_type, protocol, search_key, efiobj)) { 373 *(buffer++) = efiobj->handle; 374 } 375 } 376 377 *buffer_size = size; 378 return EFI_EXIT(EFI_SUCCESS); 379 } 380 381 static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, 382 struct efi_device_path **device_path, 383 efi_handle_t *device) 384 { 385 EFI_ENTRY("%p, %p, %p", protocol, device_path, device); 386 return EFI_EXIT(EFI_NOT_FOUND); 387 } 388 389 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) 390 { 391 int i; 392 393 /* Check for guid override */ 394 for (i = 0; i < systab.nr_tables; i++) { 395 if (!guidcmp(guid, &efi_conf_table[i].guid)) { 396 efi_conf_table[i].table = table; 397 return EFI_SUCCESS; 398 } 399 } 400 401 /* No override, check for overflow */ 402 if (i >= ARRAY_SIZE(efi_conf_table)) 403 return EFI_OUT_OF_RESOURCES; 404 405 /* Add a new entry */ 406 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); 407 efi_conf_table[i].table = table; 408 systab.nr_tables = i + 1; 409 410 return EFI_SUCCESS; 411 } 412 413 static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, 414 void *table) 415 { 416 EFI_ENTRY("%p, %p", guid, table); 417 return EFI_EXIT(efi_install_configuration_table(guid, table)); 418 } 419 420 static efi_status_t EFIAPI efi_load_image(bool boot_policy, 421 efi_handle_t parent_image, 422 struct efi_device_path *file_path, 423 void *source_buffer, 424 unsigned long source_size, 425 efi_handle_t *image_handle) 426 { 427 static struct efi_object loaded_image_info_obj = { 428 .protocols = { 429 { 430 .guid = &efi_guid_loaded_image, 431 .open = &efi_return_handle, 432 }, 433 }, 434 }; 435 struct efi_loaded_image *info; 436 struct efi_object *obj; 437 438 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, 439 file_path, source_buffer, source_size, image_handle); 440 info = malloc(sizeof(*info)); 441 obj = malloc(sizeof(loaded_image_info_obj)); 442 memset(info, 0, sizeof(*info)); 443 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); 444 obj->handle = info; 445 info->file_path = file_path; 446 info->reserved = efi_load_pe(source_buffer, info); 447 if (!info->reserved) { 448 free(info); 449 free(obj); 450 return EFI_EXIT(EFI_UNSUPPORTED); 451 } 452 453 *image_handle = info; 454 list_add_tail(&obj->link, &efi_obj_list); 455 456 return EFI_EXIT(EFI_SUCCESS); 457 } 458 459 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, 460 unsigned long *exit_data_size, 461 s16 **exit_data) 462 { 463 ulong (*entry)(void *image_handle, struct efi_system_table *st); 464 struct efi_loaded_image *info = image_handle; 465 466 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); 467 entry = info->reserved; 468 469 efi_is_direct_boot = false; 470 471 /* call the image! */ 472 if (setjmp(&info->exit_jmp)) { 473 /* We returned from the child image */ 474 return EFI_EXIT(info->exit_status); 475 } 476 477 entry(image_handle, &systab); 478 479 /* Should usually never get here */ 480 return EFI_EXIT(EFI_SUCCESS); 481 } 482 483 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, 484 efi_status_t exit_status, unsigned long exit_data_size, 485 int16_t *exit_data) 486 { 487 struct efi_loaded_image *loaded_image_info = (void*)image_handle; 488 489 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, 490 exit_data_size, exit_data); 491 492 loaded_image_info->exit_status = exit_status; 493 longjmp(&loaded_image_info->exit_jmp, 1); 494 495 panic("EFI application exited"); 496 } 497 498 static struct efi_object *efi_search_obj(void *handle) 499 { 500 struct list_head *lhandle; 501 502 list_for_each(lhandle, &efi_obj_list) { 503 struct efi_object *efiobj; 504 efiobj = list_entry(lhandle, struct efi_object, link); 505 if (efiobj->handle == handle) 506 return efiobj; 507 } 508 509 return NULL; 510 } 511 512 static efi_status_t EFIAPI efi_unload_image(void *image_handle) 513 { 514 struct efi_object *efiobj; 515 516 EFI_ENTRY("%p", image_handle); 517 efiobj = efi_search_obj(image_handle); 518 if (efiobj) 519 list_del(&efiobj->link); 520 521 return EFI_EXIT(EFI_SUCCESS); 522 } 523 524 static void efi_exit_caches(void) 525 { 526 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 527 /* 528 * Grub on 32bit ARM needs to have caches disabled before jumping into 529 * a zImage, but does not know of all cache layers. Give it a hand. 530 */ 531 if (efi_is_direct_boot) 532 cleanup_before_linux(); 533 #endif 534 } 535 536 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, 537 unsigned long map_key) 538 { 539 EFI_ENTRY("%p, %ld", image_handle, map_key); 540 541 board_quiesce_devices(); 542 543 /* Fix up caches for EFI payloads if necessary */ 544 efi_exit_caches(); 545 546 /* This stops all lingering devices */ 547 bootm_disable_interrupts(); 548 549 /* Give the payload some time to boot */ 550 WATCHDOG_RESET(); 551 552 return EFI_EXIT(EFI_SUCCESS); 553 } 554 555 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) 556 { 557 static uint64_t mono = 0; 558 EFI_ENTRY("%p", count); 559 *count = mono++; 560 return EFI_EXIT(EFI_SUCCESS); 561 } 562 563 static efi_status_t EFIAPI efi_stall(unsigned long microseconds) 564 { 565 EFI_ENTRY("%ld", microseconds); 566 udelay(microseconds); 567 return EFI_EXIT(EFI_SUCCESS); 568 } 569 570 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, 571 uint64_t watchdog_code, 572 unsigned long data_size, 573 uint16_t *watchdog_data) 574 { 575 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, 576 data_size, watchdog_data); 577 return EFI_EXIT(efi_unsupported(__func__)); 578 } 579 580 static efi_status_t EFIAPI efi_connect_controller( 581 efi_handle_t controller_handle, 582 efi_handle_t *driver_image_handle, 583 struct efi_device_path *remain_device_path, 584 bool recursive) 585 { 586 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, 587 remain_device_path, recursive); 588 return EFI_EXIT(EFI_NOT_FOUND); 589 } 590 591 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, 592 void *driver_image_handle, 593 void *child_handle) 594 { 595 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, 596 child_handle); 597 return EFI_EXIT(EFI_INVALID_PARAMETER); 598 } 599 600 static efi_status_t EFIAPI efi_close_protocol(void *handle, 601 efi_guid_t *protocol, 602 void *agent_handle, 603 void *controller_handle) 604 { 605 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, 606 controller_handle); 607 return EFI_EXIT(EFI_NOT_FOUND); 608 } 609 610 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, 611 efi_guid_t *protocol, 612 struct efi_open_protocol_info_entry **entry_buffer, 613 unsigned long *entry_count) 614 { 615 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, 616 entry_count); 617 return EFI_EXIT(EFI_NOT_FOUND); 618 } 619 620 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, 621 efi_guid_t ***protocol_buffer, 622 unsigned long *protocol_buffer_count) 623 { 624 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, 625 protocol_buffer_count); 626 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 627 } 628 629 static efi_status_t EFIAPI efi_locate_handle_buffer( 630 enum efi_locate_search_type search_type, 631 efi_guid_t *protocol, void *search_key, 632 unsigned long *no_handles, efi_handle_t **buffer) 633 { 634 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 635 no_handles, buffer); 636 return EFI_EXIT(EFI_NOT_FOUND); 637 } 638 639 static struct efi_class_map efi_class_maps[] = { 640 { 641 .guid = &efi_guid_console_control, 642 .interface = &efi_console_control 643 }, 644 }; 645 646 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, 647 void *registration, 648 void **protocol_interface) 649 { 650 int i; 651 652 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); 653 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { 654 struct efi_class_map *curmap = &efi_class_maps[i]; 655 if (!guidcmp(protocol, curmap->guid)) { 656 *protocol_interface = (void*)curmap->interface; 657 return EFI_EXIT(EFI_SUCCESS); 658 } 659 } 660 661 return EFI_EXIT(EFI_NOT_FOUND); 662 } 663 664 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( 665 void **handle, ...) 666 { 667 EFI_ENTRY("%p", handle); 668 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 669 } 670 671 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( 672 void *handle, ...) 673 { 674 EFI_ENTRY("%p", handle); 675 return EFI_EXIT(EFI_INVALID_PARAMETER); 676 } 677 678 static efi_status_t EFIAPI efi_calculate_crc32(void *data, 679 unsigned long data_size, 680 uint32_t *crc32_p) 681 { 682 EFI_ENTRY("%p, %ld", data, data_size); 683 *crc32_p = crc32(0, data, data_size); 684 return EFI_EXIT(EFI_SUCCESS); 685 } 686 687 static void EFIAPI efi_copy_mem(void *destination, void *source, 688 unsigned long length) 689 { 690 EFI_ENTRY("%p, %p, %ld", destination, source, length); 691 memcpy(destination, source, length); 692 } 693 694 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) 695 { 696 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); 697 memset(buffer, value, size); 698 } 699 700 static efi_status_t EFIAPI efi_open_protocol( 701 void *handle, efi_guid_t *protocol, 702 void **protocol_interface, void *agent_handle, 703 void *controller_handle, uint32_t attributes) 704 { 705 struct list_head *lhandle; 706 int i; 707 efi_status_t r = EFI_UNSUPPORTED; 708 709 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, 710 protocol_interface, agent_handle, controller_handle, 711 attributes); 712 list_for_each(lhandle, &efi_obj_list) { 713 struct efi_object *efiobj; 714 efiobj = list_entry(lhandle, struct efi_object, link); 715 716 if (efiobj->handle != handle) 717 continue; 718 719 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 720 struct efi_handler *handler = &efiobj->protocols[i]; 721 const efi_guid_t *hprotocol = handler->guid; 722 if (!hprotocol) 723 break; 724 if (!guidcmp(hprotocol, protocol)) { 725 r = handler->open(handle, protocol, 726 protocol_interface, agent_handle, 727 controller_handle, attributes); 728 goto out; 729 } 730 } 731 } 732 733 out: 734 return EFI_EXIT(r); 735 } 736 737 static efi_status_t EFIAPI efi_handle_protocol(void *handle, 738 efi_guid_t *protocol, 739 void **protocol_interface) 740 { 741 return efi_open_protocol(handle, protocol, protocol_interface, 742 NULL, NULL, 0); 743 } 744 745 static const struct efi_boot_services efi_boot_services = { 746 .hdr = { 747 .headersize = sizeof(struct efi_table_hdr), 748 }, 749 .raise_tpl = efi_raise_tpl, 750 .restore_tpl = efi_restore_tpl, 751 .allocate_pages = efi_allocate_pages_ext, 752 .free_pages = efi_free_pages_ext, 753 .get_memory_map = efi_get_memory_map_ext, 754 .allocate_pool = efi_allocate_pool_ext, 755 .free_pool = efi_free_pool_ext, 756 .create_event = efi_create_event, 757 .set_timer = efi_set_timer, 758 .wait_for_event = efi_wait_for_event, 759 .signal_event = efi_signal_event, 760 .close_event = efi_close_event, 761 .check_event = efi_check_event, 762 .install_protocol_interface = efi_install_protocol_interface, 763 .reinstall_protocol_interface = efi_reinstall_protocol_interface, 764 .uninstall_protocol_interface = efi_uninstall_protocol_interface, 765 .handle_protocol = efi_handle_protocol, 766 .reserved = NULL, 767 .register_protocol_notify = efi_register_protocol_notify, 768 .locate_handle = efi_locate_handle, 769 .locate_device_path = efi_locate_device_path, 770 .install_configuration_table = efi_install_configuration_table_ext, 771 .load_image = efi_load_image, 772 .start_image = efi_start_image, 773 .exit = efi_exit, 774 .unload_image = efi_unload_image, 775 .exit_boot_services = efi_exit_boot_services, 776 .get_next_monotonic_count = efi_get_next_monotonic_count, 777 .stall = efi_stall, 778 .set_watchdog_timer = efi_set_watchdog_timer, 779 .connect_controller = efi_connect_controller, 780 .disconnect_controller = efi_disconnect_controller, 781 .open_protocol = efi_open_protocol, 782 .close_protocol = efi_close_protocol, 783 .open_protocol_information = efi_open_protocol_information, 784 .protocols_per_handle = efi_protocols_per_handle, 785 .locate_handle_buffer = efi_locate_handle_buffer, 786 .locate_protocol = efi_locate_protocol, 787 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, 788 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, 789 .calculate_crc32 = efi_calculate_crc32, 790 .copy_mem = efi_copy_mem, 791 .set_mem = efi_set_mem, 792 }; 793 794 795 static uint16_t __efi_runtime_data firmware_vendor[] = 796 { 'D','a','s',' ','U','-','b','o','o','t',0 }; 797 798 struct efi_system_table __efi_runtime_data systab = { 799 .hdr = { 800 .signature = EFI_SYSTEM_TABLE_SIGNATURE, 801 .revision = 0x20005, /* 2.5 */ 802 .headersize = sizeof(struct efi_table_hdr), 803 }, 804 .fw_vendor = (long)firmware_vendor, 805 .con_in = (void*)&efi_con_in, 806 .con_out = (void*)&efi_con_out, 807 .std_err = (void*)&efi_con_out, 808 .runtime = (void*)&efi_runtime_services, 809 .boottime = (void*)&efi_boot_services, 810 .nr_tables = 0, 811 .tables = (void*)efi_conf_table, 812 }; 813