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_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 static efi_status_t EFIAPI efi_install_configuration_table(efi_guid_t *guid, 380 void *table) 381 { 382 int i; 383 384 EFI_ENTRY("%p, %p", guid, table); 385 386 /* Check for guid override */ 387 for (i = 0; i < systab.nr_tables; i++) { 388 if (!guidcmp(guid, &efi_conf_table[i].guid)) { 389 efi_conf_table[i].table = table; 390 return EFI_EXIT(EFI_SUCCESS); 391 } 392 } 393 394 /* No override, check for overflow */ 395 if (i >= ARRAY_SIZE(efi_conf_table)) 396 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 397 398 /* Add a new entry */ 399 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); 400 efi_conf_table[i].table = table; 401 systab.nr_tables = i; 402 403 return EFI_EXIT(EFI_SUCCESS); 404 } 405 406 static efi_status_t EFIAPI efi_load_image(bool boot_policy, 407 efi_handle_t parent_image, 408 struct efi_device_path *file_path, 409 void *source_buffer, 410 unsigned long source_size, 411 efi_handle_t *image_handle) 412 { 413 static struct efi_object loaded_image_info_obj = { 414 .protocols = { 415 { 416 .guid = &efi_guid_loaded_image, 417 .open = &efi_return_handle, 418 }, 419 }, 420 }; 421 struct efi_loaded_image *info; 422 struct efi_object *obj; 423 424 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, 425 file_path, source_buffer, source_size, image_handle); 426 info = malloc(sizeof(*info)); 427 obj = malloc(sizeof(loaded_image_info_obj)); 428 memset(info, 0, sizeof(*info)); 429 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); 430 obj->handle = info; 431 info->file_path = file_path; 432 info->reserved = efi_load_pe(source_buffer, info); 433 if (!info->reserved) { 434 free(info); 435 free(obj); 436 return EFI_EXIT(EFI_UNSUPPORTED); 437 } 438 439 *image_handle = info; 440 list_add_tail(&obj->link, &efi_obj_list); 441 442 return EFI_EXIT(EFI_SUCCESS); 443 } 444 445 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, 446 unsigned long *exit_data_size, 447 s16 **exit_data) 448 { 449 ulong (*entry)(void *image_handle, struct efi_system_table *st); 450 struct efi_loaded_image *info = image_handle; 451 452 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); 453 entry = info->reserved; 454 455 efi_is_direct_boot = false; 456 457 /* call the image! */ 458 if (setjmp(&info->exit_jmp)) { 459 /* We returned from the child image */ 460 return EFI_EXIT(info->exit_status); 461 } 462 463 entry(image_handle, &systab); 464 465 /* Should usually never get here */ 466 return EFI_EXIT(EFI_SUCCESS); 467 } 468 469 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, 470 efi_status_t exit_status, unsigned long exit_data_size, 471 int16_t *exit_data) 472 { 473 struct efi_loaded_image *loaded_image_info = (void*)image_handle; 474 475 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, 476 exit_data_size, exit_data); 477 478 loaded_image_info->exit_status = exit_status; 479 longjmp(&loaded_image_info->exit_jmp, 1); 480 481 panic("EFI application exited"); 482 } 483 484 static struct efi_object *efi_search_obj(void *handle) 485 { 486 struct list_head *lhandle; 487 488 list_for_each(lhandle, &efi_obj_list) { 489 struct efi_object *efiobj; 490 efiobj = list_entry(lhandle, struct efi_object, link); 491 if (efiobj->handle == handle) 492 return efiobj; 493 } 494 495 return NULL; 496 } 497 498 static efi_status_t EFIAPI efi_unload_image(void *image_handle) 499 { 500 struct efi_object *efiobj; 501 502 EFI_ENTRY("%p", image_handle); 503 efiobj = efi_search_obj(image_handle); 504 if (efiobj) 505 list_del(&efiobj->link); 506 507 return EFI_EXIT(EFI_SUCCESS); 508 } 509 510 static void efi_exit_caches(void) 511 { 512 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) 513 /* 514 * Grub on 32bit ARM needs to have caches disabled before jumping into 515 * a zImage, but does not know of all cache layers. Give it a hand. 516 */ 517 if (efi_is_direct_boot) 518 cleanup_before_linux(); 519 #endif 520 } 521 522 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, 523 unsigned long map_key) 524 { 525 EFI_ENTRY("%p, %ld", image_handle, map_key); 526 527 /* Fix up caches for EFI payloads if necessary */ 528 efi_exit_caches(); 529 530 /* This stops all lingering devices */ 531 bootm_disable_interrupts(); 532 533 /* Give the payload some time to boot */ 534 WATCHDOG_RESET(); 535 536 return EFI_EXIT(EFI_SUCCESS); 537 } 538 539 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) 540 { 541 static uint64_t mono = 0; 542 EFI_ENTRY("%p", count); 543 *count = mono++; 544 return EFI_EXIT(EFI_SUCCESS); 545 } 546 547 static efi_status_t EFIAPI efi_stall(unsigned long microseconds) 548 { 549 EFI_ENTRY("%ld", microseconds); 550 udelay(microseconds); 551 return EFI_EXIT(EFI_SUCCESS); 552 } 553 554 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, 555 uint64_t watchdog_code, 556 unsigned long data_size, 557 uint16_t *watchdog_data) 558 { 559 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, 560 data_size, watchdog_data); 561 return EFI_EXIT(efi_unsupported(__func__)); 562 } 563 564 static efi_status_t EFIAPI efi_connect_controller( 565 efi_handle_t controller_handle, 566 efi_handle_t *driver_image_handle, 567 struct efi_device_path *remain_device_path, 568 bool recursive) 569 { 570 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, 571 remain_device_path, recursive); 572 return EFI_EXIT(EFI_NOT_FOUND); 573 } 574 575 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, 576 void *driver_image_handle, 577 void *child_handle) 578 { 579 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, 580 child_handle); 581 return EFI_EXIT(EFI_INVALID_PARAMETER); 582 } 583 584 static efi_status_t EFIAPI efi_close_protocol(void *handle, 585 efi_guid_t *protocol, 586 void *agent_handle, 587 void *controller_handle) 588 { 589 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, 590 controller_handle); 591 return EFI_EXIT(EFI_NOT_FOUND); 592 } 593 594 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, 595 efi_guid_t *protocol, 596 struct efi_open_protocol_info_entry **entry_buffer, 597 unsigned long *entry_count) 598 { 599 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, 600 entry_count); 601 return EFI_EXIT(EFI_NOT_FOUND); 602 } 603 604 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, 605 efi_guid_t ***protocol_buffer, 606 unsigned long *protocol_buffer_count) 607 { 608 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, 609 protocol_buffer_count); 610 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 611 } 612 613 static efi_status_t EFIAPI efi_locate_handle_buffer( 614 enum efi_locate_search_type search_type, 615 efi_guid_t *protocol, void *search_key, 616 unsigned long *no_handles, efi_handle_t **buffer) 617 { 618 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, 619 no_handles, buffer); 620 return EFI_EXIT(EFI_NOT_FOUND); 621 } 622 623 static struct efi_class_map efi_class_maps[] = { 624 { 625 .guid = &efi_guid_console_control, 626 .interface = &efi_console_control 627 }, 628 }; 629 630 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, 631 void *registration, 632 void **protocol_interface) 633 { 634 int i; 635 636 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); 637 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { 638 struct efi_class_map *curmap = &efi_class_maps[i]; 639 if (!guidcmp(protocol, curmap->guid)) { 640 *protocol_interface = (void*)curmap->interface; 641 return EFI_EXIT(EFI_SUCCESS); 642 } 643 } 644 645 return EFI_EXIT(EFI_NOT_FOUND); 646 } 647 648 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( 649 void **handle, ...) 650 { 651 EFI_ENTRY("%p", handle); 652 return EFI_EXIT(EFI_OUT_OF_RESOURCES); 653 } 654 655 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( 656 void *handle, ...) 657 { 658 EFI_ENTRY("%p", handle); 659 return EFI_EXIT(EFI_INVALID_PARAMETER); 660 } 661 662 static efi_status_t EFIAPI efi_calculate_crc32(void *data, 663 unsigned long data_size, 664 uint32_t *crc32_p) 665 { 666 EFI_ENTRY("%p, %ld", data, data_size); 667 *crc32_p = crc32(0, data, data_size); 668 return EFI_EXIT(EFI_SUCCESS); 669 } 670 671 static void EFIAPI efi_copy_mem(void *destination, void *source, 672 unsigned long length) 673 { 674 EFI_ENTRY("%p, %p, %ld", destination, source, length); 675 memcpy(destination, source, length); 676 } 677 678 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) 679 { 680 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); 681 memset(buffer, value, size); 682 } 683 684 static efi_status_t EFIAPI efi_open_protocol( 685 void *handle, efi_guid_t *protocol, 686 void **protocol_interface, void *agent_handle, 687 void *controller_handle, uint32_t attributes) 688 { 689 struct list_head *lhandle; 690 int i; 691 efi_status_t r = EFI_UNSUPPORTED; 692 693 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, 694 protocol_interface, agent_handle, controller_handle, 695 attributes); 696 list_for_each(lhandle, &efi_obj_list) { 697 struct efi_object *efiobj; 698 efiobj = list_entry(lhandle, struct efi_object, link); 699 700 if (efiobj->handle != handle) 701 continue; 702 703 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { 704 struct efi_handler *handler = &efiobj->protocols[i]; 705 const efi_guid_t *hprotocol = handler->guid; 706 if (!hprotocol) 707 break; 708 if (!guidcmp(hprotocol, protocol)) { 709 r = handler->open(handle, protocol, 710 protocol_interface, agent_handle, 711 controller_handle, attributes); 712 goto out; 713 } 714 } 715 } 716 717 out: 718 return EFI_EXIT(r); 719 } 720 721 static efi_status_t EFIAPI efi_handle_protocol(void *handle, 722 efi_guid_t *protocol, 723 void **protocol_interface) 724 { 725 return efi_open_protocol(handle, protocol, protocol_interface, 726 NULL, NULL, 0); 727 } 728 729 static const struct efi_boot_services efi_boot_services = { 730 .hdr = { 731 .headersize = sizeof(struct efi_table_hdr), 732 }, 733 .raise_tpl = efi_raise_tpl, 734 .restore_tpl = efi_restore_tpl, 735 .allocate_pages = efi_allocate_pages_ext, 736 .free_pages = efi_free_pages_ext, 737 .get_memory_map = efi_get_memory_map_ext, 738 .allocate_pool = efi_allocate_pool_ext, 739 .free_pool = efi_free_pool_ext, 740 .create_event = efi_create_event, 741 .set_timer = efi_set_timer, 742 .wait_for_event = efi_wait_for_event, 743 .signal_event = efi_signal_event, 744 .close_event = efi_close_event, 745 .check_event = efi_check_event, 746 .install_protocol_interface = efi_install_protocol_interface, 747 .reinstall_protocol_interface = efi_reinstall_protocol_interface, 748 .uninstall_protocol_interface = efi_uninstall_protocol_interface, 749 .handle_protocol = efi_handle_protocol, 750 .reserved = NULL, 751 .register_protocol_notify = efi_register_protocol_notify, 752 .locate_handle = efi_locate_handle, 753 .locate_device_path = efi_locate_device_path, 754 .install_configuration_table = efi_install_configuration_table, 755 .load_image = efi_load_image, 756 .start_image = efi_start_image, 757 .exit = efi_exit, 758 .unload_image = efi_unload_image, 759 .exit_boot_services = efi_exit_boot_services, 760 .get_next_monotonic_count = efi_get_next_monotonic_count, 761 .stall = efi_stall, 762 .set_watchdog_timer = efi_set_watchdog_timer, 763 .connect_controller = efi_connect_controller, 764 .disconnect_controller = efi_disconnect_controller, 765 .open_protocol = efi_open_protocol, 766 .close_protocol = efi_close_protocol, 767 .open_protocol_information = efi_open_protocol_information, 768 .protocols_per_handle = efi_protocols_per_handle, 769 .locate_handle_buffer = efi_locate_handle_buffer, 770 .locate_protocol = efi_locate_protocol, 771 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, 772 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, 773 .calculate_crc32 = efi_calculate_crc32, 774 .copy_mem = efi_copy_mem, 775 .set_mem = efi_set_mem, 776 }; 777 778 779 static uint16_t EFI_RUNTIME_DATA firmware_vendor[] = 780 { 'D','a','s',' ','U','-','b','o','o','t',0 }; 781 782 struct efi_system_table EFI_RUNTIME_DATA systab = { 783 .hdr = { 784 .signature = EFI_SYSTEM_TABLE_SIGNATURE, 785 .revision = 0x20005, /* 2.5 */ 786 .headersize = sizeof(struct efi_table_hdr), 787 }, 788 .fw_vendor = (long)firmware_vendor, 789 .con_in = (void*)&efi_con_in, 790 .con_out = (void*)&efi_con_out, 791 .std_err = (void*)&efi_con_out, 792 .runtime = (void*)&efi_runtime_services, 793 .boottime = (void*)&efi_boot_services, 794 .nr_tables = 0, 795 .tables = (void*)efi_conf_table, 796 }; 797