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[1]; 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(int pool_type, unsigned long size, 134 void **buffer) 135 { 136 efi_status_t r; 137 138 EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); 139 r = efi_allocate_pages(0, pool_type, (size + 0xfff) >> 12, (void*)buffer); 140 return EFI_EXIT(r); 141 } 142 143 static efi_status_t EFIAPI efi_free_pool(void *buffer) 144 { 145 efi_status_t r; 146 147 EFI_ENTRY("%p", buffer); 148 r = efi_free_pages((ulong)buffer, 0); 149 return EFI_EXIT(r); 150 } 151 152 /* 153 * Our event capabilities are very limited. Only support a single 154 * event to exist, so we don't need to maintain lists. 155 */ 156 static struct { 157 enum efi_event_type type; 158 u32 trigger_type; 159 u32 trigger_time; 160 u64 trigger_next; 161 unsigned long notify_tpl; 162 void (*notify_function) (void *event, void *context); 163 void *notify_context; 164 } efi_event = { 165 /* Disable timers on bootup */ 166 .trigger_next = -1ULL, 167 }; 168 169 static efi_status_t EFIAPI efi_create_event( 170 enum efi_event_type type, ulong notify_tpl, 171 void (*notify_function) (void *event, void *context), 172 void *notify_context, void **event) 173 { 174 EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function, 175 notify_context); 176 if (efi_event.notify_function) { 177 /* We only support one event at a time */ 178 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 179 } 180 181 efi_event.type = type; 182 efi_event.notify_tpl = notify_tpl; 183 efi_event.notify_function = notify_function; 184 efi_event.notify_context = notify_context; 185 *event = &efi_event; 186 187 return EFI_EXIT(EFI_SUCCESS); 188 } 189 190 /* 191 * Our timers have to work without interrupts, so we check whenever keyboard 192 * input or disk accesses happen if enough time elapsed for it to fire. 193 */ 194 void efi_timer_check(void) 195 { 196 u64 now = timer_get_us(); 197 198 if (now >= efi_event.trigger_next) { 199 /* Triggering! */ 200 if (efi_event.trigger_type == EFI_TIMER_PERIODIC) 201 efi_event.trigger_next += efi_event.trigger_time / 10; 202 efi_event.notify_function(&efi_event, efi_event.notify_context); 203 } 204 205 WATCHDOG_RESET(); 206 } 207 208 static efi_status_t EFIAPI efi_set_timer(void *event, int type, 209 uint64_t trigger_time) 210 { 211 /* We don't have 64bit division available everywhere, so limit timer 212 * distances to 32bit bits. */ 213 u32 trigger32 = trigger_time; 214 215 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); 216 217 if (trigger32 < trigger_time) { 218 printf("WARNING: Truncating timer from %"PRIx64" to %x\n", 219 trigger_time, trigger32); 220 } 221 222 if (event != &efi_event) { 223 /* We only support one event at a time */ 224 return EFI_EXIT(EFI_INVALID_PARAMETER); 225 } 226 227 switch (type) { 228 case EFI_TIMER_STOP: 229 efi_event.trigger_next = -1ULL; 230 break; 231 case EFI_TIMER_PERIODIC: 232 case EFI_TIMER_RELATIVE: 233 efi_event.trigger_next = timer_get_us() + (trigger32 / 10); 234 break; 235 default: 236 return EFI_EXIT(EFI_INVALID_PARAMETER); 237 } 238 efi_event.trigger_type = type; 239 efi_event.trigger_time = trigger_time; 240 241 return EFI_EXIT(EFI_SUCCESS); 242 } 243 244 static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, 245 void *event, unsigned long *index) 246 { 247 u64 now; 248 249 EFI_ENTRY("%ld, %p, %p", num_events, event, index); 250 251 now = timer_get_us(); 252 while (now < efi_event.trigger_next) { } 253 efi_timer_check(); 254 255 return EFI_EXIT(EFI_SUCCESS); 256 } 257 258 static efi_status_t EFIAPI efi_signal_event(void *event) 259 { 260 EFI_ENTRY("%p", event); 261 return EFI_EXIT(EFI_SUCCESS); 262 } 263 264 static efi_status_t EFIAPI efi_close_event(void *event) 265 { 266 EFI_ENTRY("%p", event); 267 efi_event.trigger_next = -1ULL; 268 return EFI_EXIT(EFI_SUCCESS); 269 } 270 271 static efi_status_t EFIAPI efi_check_event(void *event) 272 { 273 EFI_ENTRY("%p", event); 274 return EFI_EXIT(EFI_NOT_READY); 275 } 276 277 static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, 278 efi_guid_t *protocol, int protocol_interface_type, 279 void *protocol_interface) 280 { 281 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, 282 protocol_interface); 283 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 284 } 285 static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, 286 efi_guid_t *protocol, void *old_interface, 287 void *new_interface) 288 { 289 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, 290 new_interface); 291 return EFI_EXIT(EFI_ACCESS_DENIED); 292 } 293 294 static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, 295 efi_guid_t *protocol, void *protocol_interface) 296 { 297 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); 298 return EFI_EXIT(EFI_NOT_FOUND); 299 } 300 301 static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, 302 void *event, 303 void **registration) 304 { 305 EFI_ENTRY("%p, %p, %p", protocol, event, registration); 306 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 307 } 308 309 static int efi_search(enum efi_locate_search_type search_type, 310 efi_guid_t *protocol, void *search_key, 311 struct efi_object *efiobj) 312 { 313 int i; 314 315 switch (search_type) { 316 case all_handles: 317 return 0; 318 case by_register_notify: 319 return -1; 320 case by_protocol: 321 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 322 const efi_guid_t *guid = efiobj->protocols[i].guid; 323 if (guid && !guidcmp(guid, protocol)) 324 return 0; 325 } 326 return -1; 327 } 328 329 return -1; 330 } 331 332 static efi_status_t EFIAPI efi_locate_handle( 333 enum efi_locate_search_type search_type, 334 efi_guid_t *protocol, void *search_key, 335 unsigned long *buffer_size, efi_handle_t *buffer) 336 { 337 struct list_head *lhandle; 338 unsigned long size = 0; 339 340 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 341 buffer_size, buffer); 342 343 /* Count how much space we need */ 344 list_for_each(lhandle, &efi_obj_list) { 345 struct efi_object *efiobj; 346 efiobj = list_entry(lhandle, struct efi_object, link); 347 if (!efi_search(search_type, protocol, search_key, efiobj)) { 348 size += sizeof(void*); 349 } 350 } 351 352 if (*buffer_size < size) { 353 *buffer_size = size; 354 return EFI_EXIT(EFI_BUFFER_TOO_SMALL); 355 } 356 357 /* Then fill the array */ 358 list_for_each(lhandle, &efi_obj_list) { 359 struct efi_object *efiobj; 360 efiobj = list_entry(lhandle, struct efi_object, link); 361 if (!efi_search(search_type, protocol, search_key, efiobj)) { 362 *(buffer++) = efiobj->handle; 363 } 364 } 365 366 *buffer_size = size; 367 return EFI_EXIT(EFI_SUCCESS); 368 } 369 370 static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, 371 struct efi_device_path **device_path, 372 efi_handle_t *device) 373 { 374 EFI_ENTRY("%p, %p, %p", protocol, device_path, device); 375 return EFI_EXIT(EFI_NOT_FOUND); 376 } 377 378 static efi_status_t EFIAPI efi_install_configuration_table(efi_guid_t *guid, 379 void *table) 380 { 381 int i; 382 383 EFI_ENTRY("%p, %p", guid, table); 384 385 /* Check for guid override */ 386 for (i = 0; i < systab.nr_tables; i++) { 387 if (!guidcmp(guid, &efi_conf_table[i].guid)) { 388 efi_conf_table[i].table = table; 389 return EFI_EXIT(EFI_SUCCESS); 390 } 391 } 392 393 /* No override, check for overflow */ 394 if (i >= ARRAY_SIZE(efi_conf_table)) 395 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 396 397 /* Add a new entry */ 398 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); 399 efi_conf_table[i].table = table; 400 systab.nr_tables = i; 401 402 return EFI_EXIT(EFI_SUCCESS); 403 } 404 405 static efi_status_t EFIAPI efi_load_image(bool boot_policy, 406 efi_handle_t parent_image, 407 struct efi_device_path *file_path, 408 void *source_buffer, 409 unsigned long source_size, 410 efi_handle_t *image_handle) 411 { 412 static struct efi_object loaded_image_info_obj = { 413 .protocols = { 414 { 415 .guid = &efi_guid_loaded_image, 416 .open = &efi_return_handle, 417 }, 418 }, 419 }; 420 struct efi_loaded_image *info; 421 struct efi_object *obj; 422 423 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, 424 file_path, source_buffer, source_size, image_handle); 425 info = malloc(sizeof(*info)); 426 obj = malloc(sizeof(loaded_image_info_obj)); 427 memset(info, 0, sizeof(*info)); 428 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); 429 obj->handle = info; 430 info->file_path = file_path; 431 info->reserved = efi_load_pe(source_buffer, info); 432 if (!info->reserved) { 433 free(info); 434 free(obj); 435 return EFI_EXIT(EFI_UNSUPPORTED); 436 } 437 438 *image_handle = info; 439 list_add_tail(&obj->link, &efi_obj_list); 440 441 return EFI_EXIT(EFI_SUCCESS); 442 } 443 444 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, 445 unsigned long *exit_data_size, 446 s16 **exit_data) 447 { 448 ulong (*entry)(void *image_handle, struct efi_system_table *st); 449 struct efi_loaded_image *info = image_handle; 450 451 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); 452 entry = info->reserved; 453 454 efi_is_direct_boot = false; 455 456 /* call the image! */ 457 if (setjmp(&info->exit_jmp)) { 458 /* We returned from the child image */ 459 return EFI_EXIT(info->exit_status); 460 } 461 462 entry(image_handle, &systab); 463 464 /* Should usually never get here */ 465 return EFI_EXIT(EFI_SUCCESS); 466 } 467 468 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, 469 efi_status_t exit_status, unsigned long exit_data_size, 470 int16_t *exit_data) 471 { 472 struct efi_loaded_image *loaded_image_info = (void*)image_handle; 473 474 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, 475 exit_data_size, exit_data); 476 477 loaded_image_info->exit_status = exit_status; 478 longjmp(&loaded_image_info->exit_jmp); 479 480 panic("EFI application exited"); 481 } 482 483 static struct efi_object *efi_search_obj(void *handle) 484 { 485 struct list_head *lhandle; 486 487 list_for_each(lhandle, &efi_obj_list) { 488 struct efi_object *efiobj; 489 efiobj = list_entry(lhandle, struct efi_object, link); 490 if (efiobj->handle == handle) 491 return efiobj; 492 } 493 494 return NULL; 495 } 496 497 static efi_status_t EFIAPI efi_unload_image(void *image_handle) 498 { 499 struct efi_object *efiobj; 500 501 EFI_ENTRY("%p", image_handle); 502 efiobj = efi_search_obj(image_handle); 503 if (efiobj) 504 list_del(&efiobj->link); 505 506 return EFI_EXIT(EFI_SUCCESS); 507 } 508 509 static void efi_exit_caches(void) 510 { 511 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 512 /* 513 * Grub on 32bit ARM needs to have caches disabled before jumping into 514 * a zImage, but does not know of all cache layers. Give it a hand. 515 */ 516 if (efi_is_direct_boot) 517 cleanup_before_linux(); 518 #endif 519 } 520 521 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, 522 unsigned long map_key) 523 { 524 EFI_ENTRY("%p, %ld", image_handle, map_key); 525 526 /* Fix up caches for EFI payloads if necessary */ 527 efi_exit_caches(); 528 529 /* This stops all lingering devices */ 530 bootm_disable_interrupts(); 531 532 /* Give the payload some time to boot */ 533 WATCHDOG_RESET(); 534 535 return EFI_EXIT(EFI_SUCCESS); 536 } 537 538 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) 539 { 540 static uint64_t mono = 0; 541 EFI_ENTRY("%p", count); 542 *count = mono++; 543 return EFI_EXIT(EFI_SUCCESS); 544 } 545 546 static efi_status_t EFIAPI efi_stall(unsigned long microseconds) 547 { 548 EFI_ENTRY("%ld", microseconds); 549 udelay(microseconds); 550 return EFI_EXIT(EFI_SUCCESS); 551 } 552 553 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, 554 uint64_t watchdog_code, 555 unsigned long data_size, 556 uint16_t *watchdog_data) 557 { 558 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, 559 data_size, watchdog_data); 560 return EFI_EXIT(efi_unsupported(__func__)); 561 } 562 563 static efi_status_t EFIAPI efi_connect_controller( 564 efi_handle_t controller_handle, 565 efi_handle_t *driver_image_handle, 566 struct efi_device_path *remain_device_path, 567 bool recursive) 568 { 569 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, 570 remain_device_path, recursive); 571 return EFI_EXIT(EFI_NOT_FOUND); 572 } 573 574 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, 575 void *driver_image_handle, 576 void *child_handle) 577 { 578 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, 579 child_handle); 580 return EFI_EXIT(EFI_INVALID_PARAMETER); 581 } 582 583 static efi_status_t EFIAPI efi_close_protocol(void *handle, 584 efi_guid_t *protocol, 585 void *agent_handle, 586 void *controller_handle) 587 { 588 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, 589 controller_handle); 590 return EFI_EXIT(EFI_NOT_FOUND); 591 } 592 593 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, 594 efi_guid_t *protocol, 595 struct efi_open_protocol_info_entry **entry_buffer, 596 unsigned long *entry_count) 597 { 598 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, 599 entry_count); 600 return EFI_EXIT(EFI_NOT_FOUND); 601 } 602 603 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, 604 efi_guid_t ***protocol_buffer, 605 unsigned long *protocol_buffer_count) 606 { 607 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, 608 protocol_buffer_count); 609 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 610 } 611 612 static efi_status_t EFIAPI efi_locate_handle_buffer( 613 enum efi_locate_search_type search_type, 614 efi_guid_t *protocol, void *search_key, 615 unsigned long *no_handles, efi_handle_t **buffer) 616 { 617 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 618 no_handles, buffer); 619 return EFI_EXIT(EFI_NOT_FOUND); 620 } 621 622 static struct efi_class_map efi_class_maps[] = { 623 { 624 .guid = &efi_guid_console_control, 625 .interface = &efi_console_control 626 }, 627 }; 628 629 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, 630 void *registration, 631 void **protocol_interface) 632 { 633 int i; 634 635 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); 636 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { 637 struct efi_class_map *curmap = &efi_class_maps[i]; 638 if (!guidcmp(protocol, curmap->guid)) { 639 *protocol_interface = (void*)curmap->interface; 640 return EFI_EXIT(EFI_SUCCESS); 641 } 642 } 643 644 return EFI_EXIT(EFI_NOT_FOUND); 645 } 646 647 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( 648 void **handle, ...) 649 { 650 EFI_ENTRY("%p", handle); 651 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 652 } 653 654 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( 655 void *handle, ...) 656 { 657 EFI_ENTRY("%p", handle); 658 return EFI_EXIT(EFI_INVALID_PARAMETER); 659 } 660 661 static efi_status_t EFIAPI efi_calculate_crc32(void *data, 662 unsigned long data_size, 663 uint32_t *crc32_p) 664 { 665 EFI_ENTRY("%p, %ld", data, data_size); 666 *crc32_p = crc32(0, data, data_size); 667 return EFI_EXIT(EFI_SUCCESS); 668 } 669 670 static void EFIAPI efi_copy_mem(void *destination, void *source, 671 unsigned long length) 672 { 673 EFI_ENTRY("%p, %p, %ld", destination, source, length); 674 memcpy(destination, source, length); 675 } 676 677 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) 678 { 679 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); 680 memset(buffer, value, size); 681 } 682 683 static efi_status_t EFIAPI efi_open_protocol( 684 void *handle, efi_guid_t *protocol, 685 void **protocol_interface, void *agent_handle, 686 void *controller_handle, uint32_t attributes) 687 { 688 struct list_head *lhandle; 689 int i; 690 efi_status_t r = EFI_UNSUPPORTED; 691 692 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, 693 protocol_interface, agent_handle, controller_handle, 694 attributes); 695 list_for_each(lhandle, &efi_obj_list) { 696 struct efi_object *efiobj; 697 efiobj = list_entry(lhandle, struct efi_object, link); 698 699 if (efiobj->handle != handle) 700 continue; 701 702 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 703 struct efi_handler *handler = &efiobj->protocols[i]; 704 const efi_guid_t *hprotocol = handler->guid; 705 if (!hprotocol) 706 break; 707 if (!guidcmp(hprotocol, protocol)) { 708 r = handler->open(handle, protocol, 709 protocol_interface, agent_handle, 710 controller_handle, attributes); 711 goto out; 712 } 713 } 714 } 715 716 out: 717 return EFI_EXIT(r); 718 } 719 720 static efi_status_t EFIAPI efi_handle_protocol(void *handle, 721 efi_guid_t *protocol, 722 void **protocol_interface) 723 { 724 return efi_open_protocol(handle, protocol, protocol_interface, 725 NULL, NULL, 0); 726 } 727 728 static const struct efi_boot_services efi_boot_services = { 729 .hdr = { 730 .headersize = sizeof(struct efi_table_hdr), 731 }, 732 .raise_tpl = efi_raise_tpl, 733 .restore_tpl = efi_restore_tpl, 734 .allocate_pages = efi_allocate_pages_ext, 735 .free_pages = efi_free_pages_ext, 736 .get_memory_map = efi_get_memory_map_ext, 737 .allocate_pool = efi_allocate_pool, 738 .free_pool = efi_free_pool, 739 .create_event = efi_create_event, 740 .set_timer = efi_set_timer, 741 .wait_for_event = efi_wait_for_event, 742 .signal_event = efi_signal_event, 743 .close_event = efi_close_event, 744 .check_event = efi_check_event, 745 .install_protocol_interface = efi_install_protocol_interface, 746 .reinstall_protocol_interface = efi_reinstall_protocol_interface, 747 .uninstall_protocol_interface = efi_uninstall_protocol_interface, 748 .handle_protocol = efi_handle_protocol, 749 .reserved = NULL, 750 .register_protocol_notify = efi_register_protocol_notify, 751 .locate_handle = efi_locate_handle, 752 .locate_device_path = efi_locate_device_path, 753 .install_configuration_table = efi_install_configuration_table, 754 .load_image = efi_load_image, 755 .start_image = efi_start_image, 756 .exit = efi_exit, 757 .unload_image = efi_unload_image, 758 .exit_boot_services = efi_exit_boot_services, 759 .get_next_monotonic_count = efi_get_next_monotonic_count, 760 .stall = efi_stall, 761 .set_watchdog_timer = efi_set_watchdog_timer, 762 .connect_controller = efi_connect_controller, 763 .disconnect_controller = efi_disconnect_controller, 764 .open_protocol = efi_open_protocol, 765 .close_protocol = efi_close_protocol, 766 .open_protocol_information = efi_open_protocol_information, 767 .protocols_per_handle = efi_protocols_per_handle, 768 .locate_handle_buffer = efi_locate_handle_buffer, 769 .locate_protocol = efi_locate_protocol, 770 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, 771 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, 772 .calculate_crc32 = efi_calculate_crc32, 773 .copy_mem = efi_copy_mem, 774 .set_mem = efi_set_mem, 775 }; 776 777 778 static uint16_t EFI_RUNTIME_DATA firmware_vendor[] = 779 { 'D','a','s',' ','U','-','b','o','o','t',0 }; 780 781 struct efi_system_table EFI_RUNTIME_DATA systab = { 782 .hdr = { 783 .signature = EFI_SYSTEM_TABLE_SIGNATURE, 784 .revision = 0x20005, /* 2.5 */ 785 .headersize = sizeof(struct efi_table_hdr), 786 }, 787 .fw_vendor = (long)firmware_vendor, 788 .con_in = (void*)&efi_con_in, 789 .con_out = (void*)&efi_con_out, 790 .std_err = (void*)&efi_con_out, 791 .runtime = (void*)&efi_runtime_services, 792 .boottime = (void*)&efi_boot_services, 793 .nr_tables = 0, 794 .tables = (void*)efi_conf_table, 795 }; 796