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