2 * EFI application boot time services
4 * Copyright (c) 2016 Alexander Graf
6 * SPDX-License-Identifier: GPL-2.0+
10 #include <efi_loader.h>
12 #include <asm/global_data.h>
13 #include <libfdt_env.h>
14 #include <u-boot/crc.h>
19 DECLARE_GLOBAL_DATA_PTR;
21 /* This list contains all the EFI objects our payload has access to */
22 LIST_HEAD(efi_obj_list);
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).
30 static bool efi_is_direct_boot = true;
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.
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().
40 static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
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.
49 static volatile void *efi_gd, *app_gd;
52 /* Called from do_bootefi_exec() */
53 void efi_save_gd(void)
60 /* Called on every callback entry */
61 void efi_restore_gd(void)
64 /* Only restore if we're already in EFI context */
74 /* Called on every callback exit */
75 efi_status_t efi_exit_func(efi_status_t ret)
84 static efi_status_t efi_unsupported(const char *funcname)
86 debug("EFI: App called into unimplemented function %s\n", funcname);
87 return EFI_EXIT(EFI_UNSUPPORTED);
90 static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
92 return memcmp(g1, g2, sizeof(efi_guid_t));
95 static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl)
97 EFI_ENTRY("0x%lx", new_tpl);
101 static void EFIAPI efi_restore_tpl(unsigned long old_tpl)
103 EFI_ENTRY("0x%lx", old_tpl);
104 EFI_EXIT(efi_unsupported(__func__));
107 static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
113 EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory);
114 r = efi_allocate_pages(type, memory_type, pages, memory);
118 static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
123 EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages);
124 r = efi_free_pages(memory, pages);
128 static efi_status_t EFIAPI efi_get_memory_map_ext(
129 unsigned long *memory_map_size,
130 struct efi_mem_desc *memory_map,
131 unsigned long *map_key,
132 unsigned long *descriptor_size,
133 uint32_t *descriptor_version)
137 EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map,
138 map_key, descriptor_size, descriptor_version);
139 r = efi_get_memory_map(memory_map_size, memory_map, map_key,
140 descriptor_size, descriptor_version);
144 static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
150 EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer);
151 r = efi_allocate_pool(pool_type, size, buffer);
155 static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
159 EFI_ENTRY("%p", buffer);
160 r = efi_free_pool(buffer);
165 * Our event capabilities are very limited. Only support a single
166 * event to exist, so we don't need to maintain lists.
169 enum efi_event_type type;
173 unsigned long notify_tpl;
174 void (EFIAPI *notify_function) (void *event, void *context);
175 void *notify_context;
177 /* Disable timers on bootup */
178 .trigger_next = -1ULL,
181 static efi_status_t EFIAPI efi_create_event(
182 enum efi_event_type type, ulong notify_tpl,
183 void (EFIAPI *notify_function) (void *event,
185 void *notify_context, void **event)
187 EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function,
189 if (efi_event.notify_function) {
190 /* We only support one event at a time */
191 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
195 return EFI_EXIT(EFI_INVALID_PARAMETER);
197 if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
198 return EFI_EXIT(EFI_INVALID_PARAMETER);
200 if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
201 notify_function == NULL)
202 return EFI_EXIT(EFI_INVALID_PARAMETER);
204 efi_event.type = type;
205 efi_event.notify_tpl = notify_tpl;
206 efi_event.notify_function = notify_function;
207 efi_event.notify_context = notify_context;
210 return EFI_EXIT(EFI_SUCCESS);
214 * Our timers have to work without interrupts, so we check whenever keyboard
215 * input or disk accesses happen if enough time elapsed for it to fire.
217 void efi_timer_check(void)
219 u64 now = timer_get_us();
221 if (now >= efi_event.trigger_next) {
223 if (efi_event.trigger_type == EFI_TIMER_PERIODIC)
224 efi_event.trigger_next += efi_event.trigger_time / 10;
225 if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL))
226 efi_event.notify_function(&efi_event,
227 efi_event.notify_context);
233 static efi_status_t EFIAPI efi_set_timer(void *event, int type,
234 uint64_t trigger_time)
236 /* We don't have 64bit division available everywhere, so limit timer
237 * distances to 32bit bits. */
238 u32 trigger32 = trigger_time;
240 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
242 if (trigger32 < trigger_time) {
243 printf("WARNING: Truncating timer from %"PRIx64" to %x\n",
244 trigger_time, trigger32);
247 if (event != &efi_event) {
248 /* We only support one event at a time */
249 return EFI_EXIT(EFI_INVALID_PARAMETER);
254 efi_event.trigger_next = -1ULL;
256 case EFI_TIMER_PERIODIC:
257 case EFI_TIMER_RELATIVE:
258 efi_event.trigger_next = timer_get_us() + (trigger32 / 10);
261 return EFI_EXIT(EFI_INVALID_PARAMETER);
263 efi_event.trigger_type = type;
264 efi_event.trigger_time = trigger_time;
266 return EFI_EXIT(EFI_SUCCESS);
269 static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
270 void *event, unsigned long *index)
274 EFI_ENTRY("%ld, %p, %p", num_events, event, index);
276 now = timer_get_us();
277 while (now < efi_event.trigger_next) { }
280 return EFI_EXIT(EFI_SUCCESS);
283 static efi_status_t EFIAPI efi_signal_event(void *event)
285 EFI_ENTRY("%p", event);
286 return EFI_EXIT(EFI_SUCCESS);
289 static efi_status_t EFIAPI efi_close_event(void *event)
291 EFI_ENTRY("%p", event);
292 efi_event.trigger_next = -1ULL;
293 return EFI_EXIT(EFI_SUCCESS);
296 static efi_status_t EFIAPI efi_check_event(void *event)
298 EFI_ENTRY("%p", event);
299 return EFI_EXIT(EFI_NOT_READY);
302 static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
303 efi_guid_t *protocol, int protocol_interface_type,
304 void *protocol_interface)
306 struct list_head *lhandle;
310 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type,
313 if (!handle || !protocol ||
314 protocol_interface_type != EFI_NATIVE_INTERFACE) {
315 r = EFI_INVALID_PARAMETER;
319 /* Create new handle if requested. */
321 r = EFI_OUT_OF_RESOURCES;
325 list_for_each(lhandle, &efi_obj_list) {
326 struct efi_object *efiobj;
327 efiobj = list_entry(lhandle, struct efi_object, link);
329 if (efiobj->handle != *handle)
331 /* Check if protocol is already installed on the handle. */
332 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
333 struct efi_handler *handler = &efiobj->protocols[i];
337 if (!guidcmp(handler->guid, protocol)) {
338 r = EFI_INVALID_PARAMETER;
342 /* Install protocol in first empty slot. */
343 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
344 struct efi_handler *handler = &efiobj->protocols[i];
349 handler->guid = protocol;
350 handler->protocol_interface = protocol_interface;
354 r = EFI_OUT_OF_RESOURCES;
357 r = EFI_INVALID_PARAMETER;
362 static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
363 efi_guid_t *protocol, void *old_interface,
366 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface,
368 return EFI_EXIT(EFI_ACCESS_DENIED);
371 static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
372 efi_guid_t *protocol, void *protocol_interface)
374 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface);
375 return EFI_EXIT(EFI_NOT_FOUND);
378 static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol,
382 EFI_ENTRY("%p, %p, %p", protocol, event, registration);
383 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
386 static int efi_search(enum efi_locate_search_type search_type,
387 efi_guid_t *protocol, void *search_key,
388 struct efi_object *efiobj)
392 switch (search_type) {
395 case by_register_notify:
398 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
399 const efi_guid_t *guid = efiobj->protocols[i].guid;
400 if (guid && !guidcmp(guid, protocol))
409 static efi_status_t EFIAPI efi_locate_handle(
410 enum efi_locate_search_type search_type,
411 efi_guid_t *protocol, void *search_key,
412 unsigned long *buffer_size, efi_handle_t *buffer)
414 struct list_head *lhandle;
415 unsigned long size = 0;
417 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
418 buffer_size, buffer);
420 /* Count how much space we need */
421 list_for_each(lhandle, &efi_obj_list) {
422 struct efi_object *efiobj;
423 efiobj = list_entry(lhandle, struct efi_object, link);
424 if (!efi_search(search_type, protocol, search_key, efiobj)) {
425 size += sizeof(void*);
429 if (*buffer_size < size) {
431 return EFI_EXIT(EFI_BUFFER_TOO_SMALL);
434 /* Then fill the array */
435 list_for_each(lhandle, &efi_obj_list) {
436 struct efi_object *efiobj;
437 efiobj = list_entry(lhandle, struct efi_object, link);
438 if (!efi_search(search_type, protocol, search_key, efiobj)) {
439 *(buffer++) = efiobj->handle;
444 return EFI_EXIT(EFI_SUCCESS);
447 static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
448 struct efi_device_path **device_path,
449 efi_handle_t *device)
451 EFI_ENTRY("%p, %p, %p", protocol, device_path, device);
452 return EFI_EXIT(EFI_NOT_FOUND);
455 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
459 /* Check for guid override */
460 for (i = 0; i < systab.nr_tables; i++) {
461 if (!guidcmp(guid, &efi_conf_table[i].guid)) {
462 efi_conf_table[i].table = table;
467 /* No override, check for overflow */
468 if (i >= ARRAY_SIZE(efi_conf_table))
469 return EFI_OUT_OF_RESOURCES;
471 /* Add a new entry */
472 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid));
473 efi_conf_table[i].table = table;
474 systab.nr_tables = i + 1;
479 static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
482 EFI_ENTRY("%p, %p", guid, table);
483 return EFI_EXIT(efi_install_configuration_table(guid, table));
486 static efi_status_t EFIAPI efi_load_image(bool boot_policy,
487 efi_handle_t parent_image,
488 struct efi_device_path *file_path,
490 unsigned long source_size,
491 efi_handle_t *image_handle)
493 static struct efi_object loaded_image_info_obj = {
496 .guid = &efi_guid_loaded_image,
500 struct efi_loaded_image *info;
501 struct efi_object *obj;
503 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
504 file_path, source_buffer, source_size, image_handle);
505 info = malloc(sizeof(*info));
506 loaded_image_info_obj.protocols[0].protocol_interface = info;
507 obj = malloc(sizeof(loaded_image_info_obj));
508 memset(info, 0, sizeof(*info));
509 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj));
511 info->file_path = file_path;
512 info->reserved = efi_load_pe(source_buffer, info);
513 if (!info->reserved) {
516 return EFI_EXIT(EFI_UNSUPPORTED);
519 *image_handle = info;
520 list_add_tail(&obj->link, &efi_obj_list);
522 return EFI_EXIT(EFI_SUCCESS);
525 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
526 unsigned long *exit_data_size,
529 ulong (*entry)(void *image_handle, struct efi_system_table *st);
530 struct efi_loaded_image *info = image_handle;
532 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
533 entry = info->reserved;
535 efi_is_direct_boot = false;
537 /* call the image! */
538 if (setjmp(&info->exit_jmp)) {
539 /* We returned from the child image */
540 return EFI_EXIT(info->exit_status);
543 entry(image_handle, &systab);
545 /* Should usually never get here */
546 return EFI_EXIT(EFI_SUCCESS);
549 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
550 efi_status_t exit_status, unsigned long exit_data_size,
553 struct efi_loaded_image *loaded_image_info = (void*)image_handle;
555 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status,
556 exit_data_size, exit_data);
558 loaded_image_info->exit_status = exit_status;
559 longjmp(&loaded_image_info->exit_jmp, 1);
561 panic("EFI application exited");
564 static struct efi_object *efi_search_obj(void *handle)
566 struct list_head *lhandle;
568 list_for_each(lhandle, &efi_obj_list) {
569 struct efi_object *efiobj;
570 efiobj = list_entry(lhandle, struct efi_object, link);
571 if (efiobj->handle == handle)
578 static efi_status_t EFIAPI efi_unload_image(void *image_handle)
580 struct efi_object *efiobj;
582 EFI_ENTRY("%p", image_handle);
583 efiobj = efi_search_obj(image_handle);
585 list_del(&efiobj->link);
587 return EFI_EXIT(EFI_SUCCESS);
590 static void efi_exit_caches(void)
592 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
594 * Grub on 32bit ARM needs to have caches disabled before jumping into
595 * a zImage, but does not know of all cache layers. Give it a hand.
597 if (efi_is_direct_boot)
598 cleanup_before_linux();
602 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
603 unsigned long map_key)
605 EFI_ENTRY("%p, %ld", image_handle, map_key);
607 board_quiesce_devices();
609 /* Fix up caches for EFI payloads if necessary */
612 /* This stops all lingering devices */
613 bootm_disable_interrupts();
615 /* Give the payload some time to boot */
618 return EFI_EXIT(EFI_SUCCESS);
621 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
623 static uint64_t mono = 0;
624 EFI_ENTRY("%p", count);
626 return EFI_EXIT(EFI_SUCCESS);
629 static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
631 EFI_ENTRY("%ld", microseconds);
632 udelay(microseconds);
633 return EFI_EXIT(EFI_SUCCESS);
636 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
637 uint64_t watchdog_code,
638 unsigned long data_size,
639 uint16_t *watchdog_data)
641 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
642 data_size, watchdog_data);
643 return EFI_EXIT(efi_unsupported(__func__));
646 static efi_status_t EFIAPI efi_connect_controller(
647 efi_handle_t controller_handle,
648 efi_handle_t *driver_image_handle,
649 struct efi_device_path *remain_device_path,
652 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
653 remain_device_path, recursive);
654 return EFI_EXIT(EFI_NOT_FOUND);
657 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle,
658 void *driver_image_handle,
661 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
663 return EFI_EXIT(EFI_INVALID_PARAMETER);
666 static efi_status_t EFIAPI efi_close_protocol(void *handle,
667 efi_guid_t *protocol,
669 void *controller_handle)
671 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle,
673 return EFI_EXIT(EFI_NOT_FOUND);
676 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
677 efi_guid_t *protocol,
678 struct efi_open_protocol_info_entry **entry_buffer,
679 unsigned long *entry_count)
681 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer,
683 return EFI_EXIT(EFI_NOT_FOUND);
686 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
687 efi_guid_t ***protocol_buffer,
688 unsigned long *protocol_buffer_count)
690 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
691 protocol_buffer_count);
692 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
695 static efi_status_t EFIAPI efi_locate_handle_buffer(
696 enum efi_locate_search_type search_type,
697 efi_guid_t *protocol, void *search_key,
698 unsigned long *no_handles, efi_handle_t **buffer)
700 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
702 return EFI_EXIT(EFI_NOT_FOUND);
705 static struct efi_class_map efi_class_maps[] = {
707 .guid = &efi_guid_console_control,
708 .interface = &efi_console_control
712 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
714 void **protocol_interface)
718 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
719 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) {
720 struct efi_class_map *curmap = &efi_class_maps[i];
721 if (!guidcmp(protocol, curmap->guid)) {
722 *protocol_interface = (void*)curmap->interface;
723 return EFI_EXIT(EFI_SUCCESS);
727 return EFI_EXIT(EFI_NOT_FOUND);
730 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
733 EFI_ENTRY("%p", handle);
734 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
737 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
740 EFI_ENTRY("%p", handle);
741 return EFI_EXIT(EFI_INVALID_PARAMETER);
744 static efi_status_t EFIAPI efi_calculate_crc32(void *data,
745 unsigned long data_size,
748 EFI_ENTRY("%p, %ld", data, data_size);
749 *crc32_p = crc32(0, data, data_size);
750 return EFI_EXIT(EFI_SUCCESS);
753 static void EFIAPI efi_copy_mem(void *destination, void *source,
754 unsigned long length)
756 EFI_ENTRY("%p, %p, %ld", destination, source, length);
757 memcpy(destination, source, length);
760 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value)
762 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value);
763 memset(buffer, value, size);
766 static efi_status_t EFIAPI efi_open_protocol(
767 void *handle, efi_guid_t *protocol,
768 void **protocol_interface, void *agent_handle,
769 void *controller_handle, uint32_t attributes)
771 struct list_head *lhandle;
773 efi_status_t r = EFI_INVALID_PARAMETER;
775 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol,
776 protocol_interface, agent_handle, controller_handle,
779 if (!handle || !protocol ||
780 (!protocol_interface && attributes !=
781 EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) {
785 switch (attributes) {
786 case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
787 case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
788 case EFI_OPEN_PROTOCOL_TEST_PROTOCOL:
790 case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
791 if (controller_handle == handle)
793 case EFI_OPEN_PROTOCOL_BY_DRIVER:
794 case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
795 if (controller_handle == NULL)
797 case EFI_OPEN_PROTOCOL_EXCLUSIVE:
798 if (agent_handle == NULL)
805 list_for_each(lhandle, &efi_obj_list) {
806 struct efi_object *efiobj;
807 efiobj = list_entry(lhandle, struct efi_object, link);
809 if (efiobj->handle != handle)
812 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
813 struct efi_handler *handler = &efiobj->protocols[i];
814 const efi_guid_t *hprotocol = handler->guid;
817 if (!guidcmp(hprotocol, protocol)) {
819 EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
820 *protocol_interface =
821 handler->protocol_interface;
836 static efi_status_t EFIAPI efi_handle_protocol(void *handle,
837 efi_guid_t *protocol,
838 void **protocol_interface)
840 return efi_open_protocol(handle, protocol, protocol_interface, NULL,
841 NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
844 static const struct efi_boot_services efi_boot_services = {
846 .headersize = sizeof(struct efi_table_hdr),
848 .raise_tpl = efi_raise_tpl,
849 .restore_tpl = efi_restore_tpl,
850 .allocate_pages = efi_allocate_pages_ext,
851 .free_pages = efi_free_pages_ext,
852 .get_memory_map = efi_get_memory_map_ext,
853 .allocate_pool = efi_allocate_pool_ext,
854 .free_pool = efi_free_pool_ext,
855 .create_event = efi_create_event,
856 .set_timer = efi_set_timer,
857 .wait_for_event = efi_wait_for_event,
858 .signal_event = efi_signal_event,
859 .close_event = efi_close_event,
860 .check_event = efi_check_event,
861 .install_protocol_interface = efi_install_protocol_interface,
862 .reinstall_protocol_interface = efi_reinstall_protocol_interface,
863 .uninstall_protocol_interface = efi_uninstall_protocol_interface,
864 .handle_protocol = efi_handle_protocol,
866 .register_protocol_notify = efi_register_protocol_notify,
867 .locate_handle = efi_locate_handle,
868 .locate_device_path = efi_locate_device_path,
869 .install_configuration_table = efi_install_configuration_table_ext,
870 .load_image = efi_load_image,
871 .start_image = efi_start_image,
873 .unload_image = efi_unload_image,
874 .exit_boot_services = efi_exit_boot_services,
875 .get_next_monotonic_count = efi_get_next_monotonic_count,
877 .set_watchdog_timer = efi_set_watchdog_timer,
878 .connect_controller = efi_connect_controller,
879 .disconnect_controller = efi_disconnect_controller,
880 .open_protocol = efi_open_protocol,
881 .close_protocol = efi_close_protocol,
882 .open_protocol_information = efi_open_protocol_information,
883 .protocols_per_handle = efi_protocols_per_handle,
884 .locate_handle_buffer = efi_locate_handle_buffer,
885 .locate_protocol = efi_locate_protocol,
886 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces,
887 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces,
888 .calculate_crc32 = efi_calculate_crc32,
889 .copy_mem = efi_copy_mem,
890 .set_mem = efi_set_mem,
894 static uint16_t __efi_runtime_data firmware_vendor[] =
895 { 'D','a','s',' ','U','-','b','o','o','t',0 };
897 struct efi_system_table __efi_runtime_data systab = {
899 .signature = EFI_SYSTEM_TABLE_SIGNATURE,
900 .revision = 0x20005, /* 2.5 */
901 .headersize = sizeof(struct efi_table_hdr),
903 .fw_vendor = (long)firmware_vendor,
904 .con_in = (void*)&efi_con_in,
905 .con_out = (void*)&efi_con_out,
906 .std_err = (void*)&efi_con_out,
907 .runtime = (void*)&efi_runtime_services,
908 .boottime = (void*)&efi_boot_services,
910 .tables = (void*)efi_conf_table,