1 // SPDX-License-Identifier: GPL-2.0+
3 * EFI application runtime services
5 * Copyright (c) 2016 Alexander Graf
13 #include <efi_loader.h>
17 #include <u-boot/crc.h>
19 /* For manual relocation support */
20 DECLARE_GLOBAL_DATA_PTR;
22 /* GUID of the runtime properties table */
23 static const efi_guid_t efi_rt_properties_table_guid =
24 EFI_RT_PROPERTIES_TABLE_GUID;
26 struct efi_runtime_mmio_list {
27 struct list_head link;
33 /* This list contains all runtime available mmio regions */
34 LIST_HEAD(efi_runtime_mmio);
36 static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void);
39 * TODO(sjg@chromium.org): These defines and structures should come from the ELF
40 * header for each architecture (or a generic header) rather than being repeated
43 #if defined(__aarch64__)
44 #define R_RELATIVE R_AARCH64_RELATIVE
45 #define R_MASK 0xffffffffULL
47 #elif defined(__arm__)
48 #define R_RELATIVE R_ARM_RELATIVE
49 #define R_MASK 0xffULL
50 #elif defined(__i386__)
51 #define R_RELATIVE R_386_RELATIVE
52 #define R_MASK 0xffULL
53 #elif defined(__x86_64__)
54 #define R_RELATIVE R_X86_64_RELATIVE
55 #define R_MASK 0xffffffffULL
57 #elif defined(__riscv)
58 #define R_RELATIVE R_RISCV_RELATIVE
59 #define R_MASK 0xffULL
68 #if (__riscv_xlen == 32)
69 #define R_ABSOLUTE R_RISCV_32
71 #elif (__riscv_xlen == 64)
72 #define R_ABSOLUTE R_RISCV_64
75 #error unknown riscv target
78 #error Need to add relocation awareness
92 static __efi_runtime_data struct efi_mem_desc *efi_virtmap;
93 static __efi_runtime_data efi_uintn_t efi_descriptor_count;
94 static __efi_runtime_data efi_uintn_t efi_descriptor_size;
97 * EFI runtime code lives in two stages. In the first stage, U-Boot and an EFI
98 * payload are running concurrently at the same time. In this mode, we can
99 * handle a good number of runtime callbacks
103 * efi_init_runtime_supported() - create runtime properties table
105 * Create a configuration table specifying which services are available at
108 * Return: status code
110 efi_status_t efi_init_runtime_supported(void)
113 struct efi_rt_properties_table *rt_table;
115 ret = efi_allocate_pool(EFI_RUNTIME_SERVICES_DATA,
116 sizeof(struct efi_rt_properties_table),
118 if (ret != EFI_SUCCESS)
121 rt_table->version = EFI_RT_PROPERTIES_TABLE_VERSION;
122 rt_table->length = sizeof(struct efi_rt_properties_table);
123 rt_table->runtime_services_supported =
124 EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP |
125 EFI_RT_SUPPORTED_CONVERT_POINTER;
128 * This value must be synced with efi_runtime_detach_list
129 * as well as efi_runtime_services.
131 #ifdef CONFIG_EFI_HAVE_RUNTIME_RESET
132 rt_table->runtime_services_supported |= EFI_RT_SUPPORTED_RESET_SYSTEM;
135 ret = efi_install_configuration_table(&efi_rt_properties_table_guid,
141 * efi_update_table_header_crc32() - Update crc32 in table header
145 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table)
148 table->crc32 = crc32(0, (const unsigned char *)table,
153 * efi_reset_system_boottime() - reset system at boot time
155 * This function implements the ResetSystem() runtime service before
156 * SetVirtualAddressMap() is called.
158 * See the Unified Extensible Firmware Interface (UEFI) specification for
161 * @reset_type: type of reset to perform
162 * @reset_status: status code for the reset
163 * @data_size: size of reset_data
164 * @reset_data: information about the reset
166 static void EFIAPI efi_reset_system_boottime(
167 enum efi_reset_type reset_type,
168 efi_status_t reset_status,
169 unsigned long data_size, void *reset_data)
171 struct efi_event *evt;
173 EFI_ENTRY("%d %lx %lx %p", reset_type, reset_status, data_size,
177 list_for_each_entry(evt, &efi_events, link) {
180 &efi_guid_event_group_reset_system)) {
181 efi_signal_event(evt);
185 switch (reset_type) {
188 case EFI_RESET_PLATFORM_SPECIFIC:
189 do_reset(NULL, 0, 0, NULL);
191 case EFI_RESET_SHUTDOWN:
192 #ifdef CONFIG_CMD_POWEROFF
193 do_poweroff(NULL, 0, 0, NULL);
202 * efi_get_time_boottime() - get current time at boot time
204 * This function implements the GetTime runtime service before
205 * SetVirtualAddressMap() is called.
207 * See the Unified Extensible Firmware Interface (UEFI) specification
210 * @time: pointer to structure to receive current time
211 * @capabilities: pointer to structure to receive RTC properties
212 * Returns: status code
214 static efi_status_t EFIAPI efi_get_time_boottime(
215 struct efi_time *time,
216 struct efi_time_cap *capabilities)
218 #ifdef CONFIG_EFI_GET_TIME
219 efi_status_t ret = EFI_SUCCESS;
223 EFI_ENTRY("%p %p", time, capabilities);
226 ret = EFI_INVALID_PARAMETER;
229 if (uclass_get_device(UCLASS_RTC, 0, &dev) ||
230 dm_rtc_get(dev, &tm)) {
231 ret = EFI_UNSUPPORTED;
234 if (dm_rtc_get(dev, &tm)) {
235 ret = EFI_DEVICE_ERROR;
239 memset(time, 0, sizeof(*time));
240 time->year = tm.tm_year;
241 time->month = tm.tm_mon;
242 time->day = tm.tm_mday;
243 time->hour = tm.tm_hour;
244 time->minute = tm.tm_min;
245 time->second = tm.tm_sec;
248 EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT;
249 time->timezone = EFI_UNSPECIFIED_TIMEZONE;
252 /* Set reasonable dummy values */
253 capabilities->resolution = 1; /* 1 Hz */
254 capabilities->accuracy = 100000000; /* 100 ppm */
255 capabilities->sets_to_zero = false;
258 return EFI_EXIT(ret);
260 EFI_ENTRY("%p %p", time, capabilities);
261 return EFI_EXIT(EFI_UNSUPPORTED);
265 #ifdef CONFIG_EFI_SET_TIME
268 * efi_validate_time() - checks if timestamp is valid
270 * @time: timestamp to validate
271 * Returns: 0 if timestamp is valid, 1 otherwise
273 static int efi_validate_time(struct efi_time *time)
276 time->year < 1900 || time->year > 9999 ||
277 !time->month || time->month > 12 || !time->day ||
278 time->day > rtc_month_days(time->month - 1, time->year) ||
279 time->hour > 23 || time->minute > 59 || time->second > 59 ||
280 time->nanosecond > 999999999 ||
282 ~(EFI_TIME_IN_DAYLIGHT | EFI_TIME_ADJUST_DAYLIGHT) ||
283 ((time->timezone < -1440 || time->timezone > 1440) &&
284 time->timezone != EFI_UNSPECIFIED_TIMEZONE));
290 * efi_set_time_boottime() - set current time
292 * This function implements the SetTime() runtime service before
293 * SetVirtualAddressMap() is called.
295 * See the Unified Extensible Firmware Interface (UEFI) specification
298 * @time: pointer to structure to with current time
299 * Returns: status code
301 static efi_status_t EFIAPI efi_set_time_boottime(struct efi_time *time)
303 #ifdef CONFIG_EFI_SET_TIME
304 efi_status_t ret = EFI_SUCCESS;
308 EFI_ENTRY("%p", time);
310 if (efi_validate_time(time)) {
311 ret = EFI_INVALID_PARAMETER;
315 if (uclass_get_device(UCLASS_RTC, 0, &dev)) {
316 ret = EFI_UNSUPPORTED;
320 memset(&tm, 0, sizeof(tm));
321 tm.tm_year = time->year;
322 tm.tm_mon = time->month;
323 tm.tm_mday = time->day;
324 tm.tm_hour = time->hour;
325 tm.tm_min = time->minute;
326 tm.tm_sec = time->second;
327 tm.tm_isdst = time->daylight ==
328 (EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT);
329 /* Calculate day of week */
330 rtc_calc_weekday(&tm);
332 if (dm_rtc_set(dev, &tm))
333 ret = EFI_DEVICE_ERROR;
335 return EFI_EXIT(ret);
337 EFI_ENTRY("%p", time);
338 return EFI_EXIT(EFI_UNSUPPORTED);
342 * efi_reset_system() - reset system
344 * This function implements the ResetSystem() runtime service after
345 * SetVirtualAddressMap() is called. It only executes an endless loop.
346 * Boards may override the helpers below to implement reset functionality.
348 * See the Unified Extensible Firmware Interface (UEFI) specification for
351 * @reset_type: type of reset to perform
352 * @reset_status: status code for the reset
353 * @data_size: size of reset_data
354 * @reset_data: information about the reset
356 void __weak __efi_runtime EFIAPI efi_reset_system(
357 enum efi_reset_type reset_type,
358 efi_status_t reset_status,
359 unsigned long data_size, void *reset_data)
361 /* Nothing we can do */
366 * efi_reset_system_init() - initialize the reset driver
368 * Boards may override this function to initialize the reset driver.
370 efi_status_t __weak efi_reset_system_init(void)
376 * efi_get_time() - get current time
378 * This function implements the GetTime runtime service after
379 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
380 * anymore only an error code is returned.
382 * See the Unified Extensible Firmware Interface (UEFI) specification
385 * @time: pointer to structure to receive current time
386 * @capabilities: pointer to structure to receive RTC properties
387 * Returns: status code
389 efi_status_t __weak __efi_runtime EFIAPI efi_get_time(
390 struct efi_time *time,
391 struct efi_time_cap *capabilities)
393 return EFI_UNSUPPORTED;
397 * efi_set_time() - set current time
399 * This function implements the SetTime runtime service after
400 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
401 * anymore only an error code is returned.
403 * See the Unified Extensible Firmware Interface (UEFI) specification
406 * @time: pointer to structure to with current time
407 * Returns: status code
409 efi_status_t __weak __efi_runtime EFIAPI efi_set_time(struct efi_time *time)
411 return EFI_UNSUPPORTED;
415 * efi_is_runtime_service_pointer() - check if pointer points to runtime table
417 * @p: pointer to check
418 * Return: true if the pointer points to a service function pointer in the
421 static bool efi_is_runtime_service_pointer(void *p)
423 return (p >= (void *)&efi_runtime_services.get_time &&
424 p <= (void *)&efi_runtime_services.query_variable_info) ||
425 p == (void *)&efi_events.prev ||
426 p == (void *)&efi_events.next;
430 * efi_runtime_detach() - detach unimplemented runtime functions
432 void efi_runtime_detach(void)
434 efi_runtime_services.reset_system = efi_reset_system;
435 efi_runtime_services.get_time = efi_get_time;
436 efi_runtime_services.set_time = efi_set_time;
439 efi_update_table_header_crc32(&efi_runtime_services.hdr);
443 * efi_set_virtual_address_map_runtime() - change from physical to virtual
446 * This function implements the SetVirtualAddressMap() runtime service after
447 * it is first called.
449 * See the Unified Extensible Firmware Interface (UEFI) specification for
452 * @memory_map_size: size of the virtual map
453 * @descriptor_size: size of an entry in the map
454 * @descriptor_version: version of the map entries
455 * @virtmap: virtual address mapping information
456 * Return: status code EFI_UNSUPPORTED
458 static __efi_runtime efi_status_t EFIAPI efi_set_virtual_address_map_runtime(
459 efi_uintn_t memory_map_size,
460 efi_uintn_t descriptor_size,
461 uint32_t descriptor_version,
462 struct efi_mem_desc *virtmap)
464 return EFI_UNSUPPORTED;
468 * efi_convert_pointer_runtime() - convert from physical to virtual pointer
470 * This function implements the ConvertPointer() runtime service after
471 * the first call to SetVirtualAddressMap().
473 * See the Unified Extensible Firmware Interface (UEFI) specification for
476 * @debug_disposition: indicates if pointer may be converted to NULL
477 * @address: pointer to be converted
478 * Return: status code EFI_UNSUPPORTED
480 static __efi_runtime efi_status_t EFIAPI efi_convert_pointer_runtime(
481 efi_uintn_t debug_disposition, void **address)
483 return EFI_UNSUPPORTED;
487 * efi_convert_pointer() - convert from physical to virtual pointer
489 * This function implements the ConvertPointer() runtime service until
490 * the first call to SetVirtualAddressMap().
492 * See the Unified Extensible Firmware Interface (UEFI) specification for
495 * @debug_disposition: indicates if pointer may be converted to NULL
496 * @address: pointer to be converted
497 * Return: status code
499 static __efi_runtime efi_status_t EFIAPI efi_convert_pointer(
500 efi_uintn_t debug_disposition, void **address)
502 efi_physical_addr_t addr = (uintptr_t)*address;
504 efi_status_t ret = EFI_NOT_FOUND;
506 EFI_ENTRY("%zu %p", debug_disposition, address);
509 ret = EFI_UNSUPPORTED;
514 ret = EFI_INVALID_PARAMETER;
518 for (i = 0; i < efi_descriptor_count; i++) {
519 struct efi_mem_desc *map = (void *)efi_virtmap +
520 (efi_descriptor_size * i);
522 if (addr >= map->physical_start &&
523 (addr < map->physical_start
524 + (map->num_pages << EFI_PAGE_SHIFT))) {
525 *address = (void *)(uintptr_t)
526 (addr + map->virtual_start -
527 map->physical_start);
535 return EFI_EXIT(ret);
538 static __efi_runtime void efi_relocate_runtime_table(ulong offset)
543 /* Relocate the runtime services pointers */
544 patchoff = offset - gd->relocaddr;
545 for (pos = (void **)&efi_runtime_services.get_time;
546 pos <= (void **)&efi_runtime_services.query_variable_info; ++pos) {
552 * The entry for SetVirtualAddress() must point to a physical address.
553 * After the first execution the service must return EFI_UNSUPPORTED.
555 efi_runtime_services.set_virtual_address_map =
556 &efi_set_virtual_address_map_runtime;
559 * The entry for ConvertPointer() must point to a physical address.
560 * The service is not usable after SetVirtualAddress().
562 efi_runtime_services.convert_pointer = &efi_convert_pointer_runtime;
565 * TODO: Update UEFI variable RuntimeServicesSupported removing flags
566 * EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP and
567 * EFI_RT_SUPPORTED_CONVERT_POINTER as required by the UEFI spec 2.8.
571 efi_update_table_header_crc32(&efi_runtime_services.hdr);
574 /* Relocate EFI runtime to uboot_reloc_base = offset */
575 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map)
578 struct elf_rela *rel = (void*)&__efi_runtime_rel_start;
580 struct elf_rel *rel = (void*)&__efi_runtime_rel_start;
581 static ulong lastoff = CONFIG_SYS_TEXT_BASE;
584 debug("%s: Relocating to offset=%lx\n", __func__, offset);
585 for (; (ulong)rel < (ulong)&__efi_runtime_rel_stop; rel++) {
586 ulong base = CONFIG_SYS_TEXT_BASE;
590 p = (void*)((ulong)rel->offset - base) + gd->relocaddr;
593 * The runtime services table is updated in
594 * efi_relocate_runtime_table()
596 if (map && efi_is_runtime_service_pointer(p))
599 debug("%s: rel->info=%#lx *p=%#lx rel->offset=%p\n", __func__,
600 rel->info, *p, rel->offset);
602 switch (rel->info & R_MASK) {
605 newaddr = rel->addend + offset - CONFIG_SYS_TEXT_BASE;
607 newaddr = *p - lastoff + offset;
612 ulong symidx = rel->info >> SYM_INDEX;
613 extern struct dyn_sym __dyn_sym_start[];
614 newaddr = __dyn_sym_start[symidx].addr + offset;
616 newaddr -= CONFIG_SYS_TEXT_BASE;
622 printf("%s: Unknown relocation type %llx\n",
623 __func__, rel->info & R_MASK);
627 /* Check if the relocation is inside bounds */
628 if (map && ((newaddr < map->virtual_start) ||
629 newaddr > (map->virtual_start +
630 (map->num_pages << EFI_PAGE_SHIFT)))) {
631 printf("%s: Relocation at %p is out of range (%lx)\n",
632 __func__, p, newaddr);
636 debug("%s: Setting %p to %lx\n", __func__, p, newaddr);
638 flush_dcache_range((ulong)p & ~(EFI_CACHELINE_SIZE - 1),
639 ALIGN((ulong)&p[1], EFI_CACHELINE_SIZE));
646 invalidate_icache_all();
650 * efi_set_virtual_address_map() - change from physical to virtual mapping
652 * This function implements the SetVirtualAddressMap() runtime service.
654 * See the Unified Extensible Firmware Interface (UEFI) specification for
657 * @memory_map_size: size of the virtual map
658 * @descriptor_size: size of an entry in the map
659 * @descriptor_version: version of the map entries
660 * @virtmap: virtual address mapping information
661 * Return: status code
663 static efi_status_t EFIAPI efi_set_virtual_address_map(
664 efi_uintn_t memory_map_size,
665 efi_uintn_t descriptor_size,
666 uint32_t descriptor_version,
667 struct efi_mem_desc *virtmap)
669 efi_uintn_t n = memory_map_size / descriptor_size;
671 efi_status_t ret = EFI_INVALID_PARAMETER;
672 int rt_code_sections = 0;
673 struct efi_event *event;
675 EFI_ENTRY("%zx %zx %x %p", memory_map_size, descriptor_size,
676 descriptor_version, virtmap);
678 if (descriptor_version != EFI_MEMORY_DESCRIPTOR_VERSION ||
679 descriptor_size < sizeof(struct efi_mem_desc))
682 efi_virtmap = virtmap;
683 efi_descriptor_size = descriptor_size;
684 efi_descriptor_count = n;
688 * Further down we are cheating. While really we should implement
689 * SetVirtualAddressMap() events and ConvertPointer() to allow
690 * dynamically loaded drivers to expose runtime services, we don't
693 * So let's ensure we see exactly one single runtime section, as
694 * that is the built-in one. If we see more (or less), someone must
695 * have tried adding or removing to that which we don't support yet.
696 * In that case, let's better fail rather than expose broken runtime
699 for (i = 0; i < n; i++) {
700 struct efi_mem_desc *map = (void*)virtmap +
701 (descriptor_size * i);
703 if (map->type == EFI_RUNTIME_SERVICES_CODE)
707 if (rt_code_sections != 1) {
709 * We expose exactly one single runtime code section, so
710 * something is definitely going wrong.
715 /* Notify EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
716 list_for_each_entry(event, &efi_events, link) {
717 if (event->notify_function)
718 EFI_CALL_VOID(event->notify_function(
719 event, event->notify_context));
722 /* Rebind mmio pointers */
723 for (i = 0; i < n; i++) {
724 struct efi_mem_desc *map = (void*)virtmap +
725 (descriptor_size * i);
726 struct list_head *lhandle;
727 efi_physical_addr_t map_start = map->physical_start;
728 efi_physical_addr_t map_len = map->num_pages << EFI_PAGE_SHIFT;
729 efi_physical_addr_t map_end = map_start + map_len;
730 u64 off = map->virtual_start - map_start;
732 /* Adjust all mmio pointers in this region */
733 list_for_each(lhandle, &efi_runtime_mmio) {
734 struct efi_runtime_mmio_list *lmmio;
736 lmmio = list_entry(lhandle,
737 struct efi_runtime_mmio_list,
739 if ((map_start <= lmmio->paddr) &&
740 (map_end >= lmmio->paddr)) {
741 uintptr_t new_addr = lmmio->paddr + off;
742 *lmmio->ptr = (void *)new_addr;
745 if ((map_start <= (uintptr_t)systab.tables) &&
746 (map_end >= (uintptr_t)systab.tables)) {
747 char *ptr = (char *)systab.tables;
750 systab.tables = (struct efi_configuration_table *)ptr;
754 /* Relocate the runtime. See TODO above */
755 for (i = 0; i < n; i++) {
756 struct efi_mem_desc *map;
758 map = (void*)virtmap + (descriptor_size * i);
759 if (map->type == EFI_RUNTIME_SERVICES_CODE) {
760 ulong new_offset = map->virtual_start -
761 map->physical_start + gd->relocaddr;
763 efi_relocate_runtime_table(new_offset);
764 efi_runtime_relocate(new_offset, map);
771 return EFI_EXIT(ret);
775 * efi_add_runtime_mmio() - add memory-mapped IO region
777 * This function adds a memory-mapped IO region to the memory map to make it
778 * available at runtime.
780 * @mmio_ptr: pointer to a pointer to the start of the memory-mapped
782 * @len: size of the memory-mapped IO region
783 * Returns: status code
785 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
787 struct efi_runtime_mmio_list *newmmio;
788 uint64_t addr = *(uintptr_t *)mmio_ptr;
791 ret = efi_add_memory_map(addr, len, EFI_MMAP_IO);
792 if (ret != EFI_SUCCESS)
793 return EFI_OUT_OF_RESOURCES;
795 newmmio = calloc(1, sizeof(*newmmio));
797 return EFI_OUT_OF_RESOURCES;
798 newmmio->ptr = mmio_ptr;
799 newmmio->paddr = *(uintptr_t *)mmio_ptr;
801 list_add_tail(&newmmio->link, &efi_runtime_mmio);
807 * In the second stage, U-Boot has disappeared. To isolate our runtime code
808 * that at this point still exists from the rest, we put it into a special
813 * This means that we can not rely on any code outside of this file in any
814 * function or variable below this line.
816 * Please keep everything fully self-contained and annotated with
817 * __efi_runtime and __efi_runtime_data markers.
821 * Relocate the EFI runtime stub to a different place. We need to call this
822 * the first time we expose the runtime interface to a user and on set virtual
827 * efi_unimplemented() - replacement function, returns EFI_UNSUPPORTED
829 * This function is used after SetVirtualAddressMap() is called as replacement
830 * for services that are not available anymore due to constraints of the U-Boot
833 * Return: EFI_UNSUPPORTED
835 static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void)
837 return EFI_UNSUPPORTED;
841 * efi_update_capsule() - process information from operating system
843 * This function implements the UpdateCapsule() runtime service.
845 * See the Unified Extensible Firmware Interface (UEFI) specification for
848 * @capsule_header_array: pointer to array of virtual pointers
849 * @capsule_count: number of pointers in capsule_header_array
850 * @scatter_gather_list: pointer to arry of physical pointers
851 * Returns: status code
853 efi_status_t __efi_runtime EFIAPI efi_update_capsule(
854 struct efi_capsule_header **capsule_header_array,
855 efi_uintn_t capsule_count,
856 u64 scatter_gather_list)
858 return EFI_UNSUPPORTED;
862 * efi_query_capsule_caps() - check if capsule is supported
864 * This function implements the QueryCapsuleCapabilities() runtime service.
866 * See the Unified Extensible Firmware Interface (UEFI) specification for
869 * @capsule_header_array: pointer to array of virtual pointers
870 * @capsule_count: number of pointers in capsule_header_array
871 * @maximum_capsule_size: maximum capsule size
872 * @reset_type: type of reset needed for capsule update
873 * Returns: status code
875 efi_status_t __efi_runtime EFIAPI efi_query_capsule_caps(
876 struct efi_capsule_header **capsule_header_array,
877 efi_uintn_t capsule_count,
878 u64 *maximum_capsule_size,
881 return EFI_UNSUPPORTED;
884 struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
886 .signature = EFI_RUNTIME_SERVICES_SIGNATURE,
887 .revision = EFI_SPECIFICATION_VERSION,
888 .headersize = sizeof(struct efi_runtime_services),
890 .get_time = &efi_get_time_boottime,
891 .set_time = &efi_set_time_boottime,
892 .get_wakeup_time = (void *)&efi_unimplemented,
893 .set_wakeup_time = (void *)&efi_unimplemented,
894 .set_virtual_address_map = &efi_set_virtual_address_map,
895 .convert_pointer = efi_convert_pointer,
896 .get_variable = efi_get_variable,
897 .get_next_variable_name = efi_get_next_variable_name,
898 .set_variable = efi_set_variable,
899 .get_next_high_mono_count = (void *)&efi_unimplemented,
900 .reset_system = &efi_reset_system_boottime,
901 .update_capsule = efi_update_capsule,
902 .query_capsule_caps = efi_query_capsule_caps,
903 .query_variable_info = efi_query_variable_info,