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_GET_VARIABLE |
125 EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME |
126 EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP |
127 EFI_RT_SUPPORTED_CONVERT_POINTER;
130 * This value must be synced with efi_runtime_detach_list
131 * as well as efi_runtime_services.
133 #ifdef CONFIG_EFI_HAVE_RUNTIME_RESET
134 rt_table->runtime_services_supported |= EFI_RT_SUPPORTED_RESET_SYSTEM;
137 ret = efi_install_configuration_table(&efi_rt_properties_table_guid,
143 * efi_memcpy_runtime() - copy memory area
145 * At runtime memcpy() is not available.
147 * Overlapping memory areas can be copied safely if src >= dest.
149 * @dest: destination buffer
150 * @src: source buffer
151 * @n: number of bytes to copy
152 * Return: pointer to destination buffer
154 void __efi_runtime efi_memcpy_runtime(void *dest, const void *src, size_t n)
164 * efi_update_table_header_crc32() - Update crc32 in table header
168 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table)
171 table->crc32 = crc32(0, (const unsigned char *)table,
176 * efi_reset_system_boottime() - reset system at boot time
178 * This function implements the ResetSystem() runtime service before
179 * SetVirtualAddressMap() is called.
181 * See the Unified Extensible Firmware Interface (UEFI) specification for
184 * @reset_type: type of reset to perform
185 * @reset_status: status code for the reset
186 * @data_size: size of reset_data
187 * @reset_data: information about the reset
189 static void EFIAPI efi_reset_system_boottime(
190 enum efi_reset_type reset_type,
191 efi_status_t reset_status,
192 unsigned long data_size, void *reset_data)
194 struct efi_event *evt;
196 EFI_ENTRY("%d %lx %lx %p", reset_type, reset_status, data_size,
200 list_for_each_entry(evt, &efi_events, link) {
203 &efi_guid_event_group_reset_system)) {
204 efi_signal_event(evt);
208 switch (reset_type) {
211 case EFI_RESET_PLATFORM_SPECIFIC:
212 do_reset(NULL, 0, 0, NULL);
214 case EFI_RESET_SHUTDOWN:
215 #ifdef CONFIG_CMD_POWEROFF
216 do_poweroff(NULL, 0, 0, NULL);
225 * efi_get_time_boottime() - get current time at boot time
227 * This function implements the GetTime runtime service before
228 * SetVirtualAddressMap() is called.
230 * See the Unified Extensible Firmware Interface (UEFI) specification
233 * @time: pointer to structure to receive current time
234 * @capabilities: pointer to structure to receive RTC properties
235 * Returns: status code
237 static efi_status_t EFIAPI efi_get_time_boottime(
238 struct efi_time *time,
239 struct efi_time_cap *capabilities)
241 #ifdef CONFIG_EFI_GET_TIME
242 efi_status_t ret = EFI_SUCCESS;
246 EFI_ENTRY("%p %p", time, capabilities);
249 ret = EFI_INVALID_PARAMETER;
252 if (uclass_get_device(UCLASS_RTC, 0, &dev) ||
253 dm_rtc_get(dev, &tm)) {
254 ret = EFI_UNSUPPORTED;
257 if (dm_rtc_get(dev, &tm)) {
258 ret = EFI_DEVICE_ERROR;
262 memset(time, 0, sizeof(*time));
263 time->year = tm.tm_year;
264 time->month = tm.tm_mon;
265 time->day = tm.tm_mday;
266 time->hour = tm.tm_hour;
267 time->minute = tm.tm_min;
268 time->second = tm.tm_sec;
271 EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT;
272 time->timezone = EFI_UNSPECIFIED_TIMEZONE;
275 /* Set reasonable dummy values */
276 capabilities->resolution = 1; /* 1 Hz */
277 capabilities->accuracy = 100000000; /* 100 ppm */
278 capabilities->sets_to_zero = false;
281 return EFI_EXIT(ret);
283 EFI_ENTRY("%p %p", time, capabilities);
284 return EFI_EXIT(EFI_UNSUPPORTED);
288 #ifdef CONFIG_EFI_SET_TIME
291 * efi_validate_time() - checks if timestamp is valid
293 * @time: timestamp to validate
294 * Returns: 0 if timestamp is valid, 1 otherwise
296 static int efi_validate_time(struct efi_time *time)
299 time->year < 1900 || time->year > 9999 ||
300 !time->month || time->month > 12 || !time->day ||
301 time->day > rtc_month_days(time->month - 1, time->year) ||
302 time->hour > 23 || time->minute > 59 || time->second > 59 ||
303 time->nanosecond > 999999999 ||
305 ~(EFI_TIME_IN_DAYLIGHT | EFI_TIME_ADJUST_DAYLIGHT) ||
306 ((time->timezone < -1440 || time->timezone > 1440) &&
307 time->timezone != EFI_UNSPECIFIED_TIMEZONE));
313 * efi_set_time_boottime() - set current time
315 * This function implements the SetTime() runtime service before
316 * SetVirtualAddressMap() is called.
318 * See the Unified Extensible Firmware Interface (UEFI) specification
321 * @time: pointer to structure to with current time
322 * Returns: status code
324 static efi_status_t EFIAPI efi_set_time_boottime(struct efi_time *time)
326 #ifdef CONFIG_EFI_SET_TIME
327 efi_status_t ret = EFI_SUCCESS;
331 EFI_ENTRY("%p", time);
333 if (efi_validate_time(time)) {
334 ret = EFI_INVALID_PARAMETER;
338 if (uclass_get_device(UCLASS_RTC, 0, &dev)) {
339 ret = EFI_UNSUPPORTED;
343 memset(&tm, 0, sizeof(tm));
344 tm.tm_year = time->year;
345 tm.tm_mon = time->month;
346 tm.tm_mday = time->day;
347 tm.tm_hour = time->hour;
348 tm.tm_min = time->minute;
349 tm.tm_sec = time->second;
350 tm.tm_isdst = time->daylight ==
351 (EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT);
352 /* Calculate day of week */
353 rtc_calc_weekday(&tm);
355 if (dm_rtc_set(dev, &tm))
356 ret = EFI_DEVICE_ERROR;
358 return EFI_EXIT(ret);
360 EFI_ENTRY("%p", time);
361 return EFI_EXIT(EFI_UNSUPPORTED);
365 * efi_reset_system() - reset system
367 * This function implements the ResetSystem() runtime service after
368 * SetVirtualAddressMap() is called. It only executes an endless loop.
369 * Boards may override the helpers below to implement reset functionality.
371 * See the Unified Extensible Firmware Interface (UEFI) specification for
374 * @reset_type: type of reset to perform
375 * @reset_status: status code for the reset
376 * @data_size: size of reset_data
377 * @reset_data: information about the reset
379 void __weak __efi_runtime EFIAPI efi_reset_system(
380 enum efi_reset_type reset_type,
381 efi_status_t reset_status,
382 unsigned long data_size, void *reset_data)
384 /* Nothing we can do */
389 * efi_reset_system_init() - initialize the reset driver
391 * Boards may override this function to initialize the reset driver.
393 efi_status_t __weak efi_reset_system_init(void)
399 * efi_get_time() - get current time
401 * This function implements the GetTime runtime service after
402 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
403 * anymore only an error code is returned.
405 * See the Unified Extensible Firmware Interface (UEFI) specification
408 * @time: pointer to structure to receive current time
409 * @capabilities: pointer to structure to receive RTC properties
410 * Returns: status code
412 efi_status_t __weak __efi_runtime EFIAPI efi_get_time(
413 struct efi_time *time,
414 struct efi_time_cap *capabilities)
416 return EFI_UNSUPPORTED;
420 * efi_set_time() - set current time
422 * This function implements the SetTime runtime service after
423 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
424 * anymore only an error code is returned.
426 * See the Unified Extensible Firmware Interface (UEFI) specification
429 * @time: pointer to structure to with current time
430 * Returns: status code
432 efi_status_t __weak __efi_runtime EFIAPI efi_set_time(struct efi_time *time)
434 return EFI_UNSUPPORTED;
438 * efi_is_runtime_service_pointer() - check if pointer points to runtime table
440 * @p: pointer to check
441 * Return: true if the pointer points to a service function pointer in the
444 static bool efi_is_runtime_service_pointer(void *p)
446 return (p >= (void *)&efi_runtime_services.get_time &&
447 p <= (void *)&efi_runtime_services.query_variable_info) ||
448 p == (void *)&efi_events.prev ||
449 p == (void *)&efi_events.next;
453 * efi_runtime_detach() - detach unimplemented runtime functions
455 void efi_runtime_detach(void)
457 efi_runtime_services.reset_system = efi_reset_system;
458 efi_runtime_services.get_time = efi_get_time;
459 efi_runtime_services.set_time = efi_set_time;
462 efi_update_table_header_crc32(&efi_runtime_services.hdr);
466 * efi_set_virtual_address_map_runtime() - change from physical to virtual
469 * This function implements the SetVirtualAddressMap() runtime service after
470 * it is first called.
472 * See the Unified Extensible Firmware Interface (UEFI) specification for
475 * @memory_map_size: size of the virtual map
476 * @descriptor_size: size of an entry in the map
477 * @descriptor_version: version of the map entries
478 * @virtmap: virtual address mapping information
479 * Return: status code EFI_UNSUPPORTED
481 static __efi_runtime efi_status_t EFIAPI efi_set_virtual_address_map_runtime(
482 efi_uintn_t memory_map_size,
483 efi_uintn_t descriptor_size,
484 uint32_t descriptor_version,
485 struct efi_mem_desc *virtmap)
487 return EFI_UNSUPPORTED;
491 * efi_convert_pointer_runtime() - convert from physical to virtual pointer
493 * This function implements the ConvertPointer() runtime service after
494 * the first call to SetVirtualAddressMap().
496 * See the Unified Extensible Firmware Interface (UEFI) specification for
499 * @debug_disposition: indicates if pointer may be converted to NULL
500 * @address: pointer to be converted
501 * Return: status code EFI_UNSUPPORTED
503 static __efi_runtime efi_status_t EFIAPI efi_convert_pointer_runtime(
504 efi_uintn_t debug_disposition, void **address)
506 return EFI_UNSUPPORTED;
510 * efi_convert_pointer() - convert from physical to virtual pointer
512 * This function implements the ConvertPointer() runtime service until
513 * the first call to SetVirtualAddressMap().
515 * See the Unified Extensible Firmware Interface (UEFI) specification for
518 * @debug_disposition: indicates if pointer may be converted to NULL
519 * @address: pointer to be converted
520 * Return: status code
522 __efi_runtime efi_status_t EFIAPI
523 efi_convert_pointer(efi_uintn_t debug_disposition, void **address)
525 efi_physical_addr_t addr;
527 efi_status_t ret = EFI_NOT_FOUND;
530 ret = EFI_UNSUPPORTED;
535 ret = EFI_INVALID_PARAMETER;
539 if (debug_disposition & EFI_OPTIONAL_PTR)
542 return EFI_INVALID_PARAMETER;
545 addr = (uintptr_t)*address;
546 for (i = 0; i < efi_descriptor_count; i++) {
547 struct efi_mem_desc *map = (void *)efi_virtmap +
548 (efi_descriptor_size * i);
550 if (addr >= map->physical_start &&
551 (addr < map->physical_start
552 + (map->num_pages << EFI_PAGE_SHIFT))) {
553 *address = (void *)(uintptr_t)
554 (addr + map->virtual_start -
555 map->physical_start);
566 static __efi_runtime void efi_relocate_runtime_table(ulong offset)
571 /* Relocate the runtime services pointers */
572 patchoff = offset - gd->relocaddr;
573 for (pos = (void **)&efi_runtime_services.get_time;
574 pos <= (void **)&efi_runtime_services.query_variable_info; ++pos) {
580 * The entry for SetVirtualAddress() must point to a physical address.
581 * After the first execution the service must return EFI_UNSUPPORTED.
583 efi_runtime_services.set_virtual_address_map =
584 &efi_set_virtual_address_map_runtime;
587 * The entry for ConvertPointer() must point to a physical address.
588 * The service is not usable after SetVirtualAddress().
590 efi_runtime_services.convert_pointer = &efi_convert_pointer_runtime;
593 * TODO: Update UEFI variable RuntimeServicesSupported removing flags
594 * EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP and
595 * EFI_RT_SUPPORTED_CONVERT_POINTER as required by the UEFI spec 2.8.
599 efi_update_table_header_crc32(&efi_runtime_services.hdr);
602 /* Relocate EFI runtime to uboot_reloc_base = offset */
603 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map)
606 struct elf_rela *rel = (void*)&__efi_runtime_rel_start;
608 struct elf_rel *rel = (void*)&__efi_runtime_rel_start;
609 static ulong lastoff = CONFIG_SYS_TEXT_BASE;
612 debug("%s: Relocating to offset=%lx\n", __func__, offset);
613 for (; (ulong)rel < (ulong)&__efi_runtime_rel_stop; rel++) {
614 ulong base = CONFIG_SYS_TEXT_BASE;
618 p = (void*)((ulong)rel->offset - base) + gd->relocaddr;
621 * The runtime services table is updated in
622 * efi_relocate_runtime_table()
624 if (map && efi_is_runtime_service_pointer(p))
627 debug("%s: rel->info=%#lx *p=%#lx rel->offset=%p\n", __func__,
628 rel->info, *p, rel->offset);
630 switch (rel->info & R_MASK) {
633 newaddr = rel->addend + offset - CONFIG_SYS_TEXT_BASE;
635 newaddr = *p - lastoff + offset;
640 ulong symidx = rel->info >> SYM_INDEX;
641 extern struct dyn_sym __dyn_sym_start[];
642 newaddr = __dyn_sym_start[symidx].addr + offset;
644 newaddr -= CONFIG_SYS_TEXT_BASE;
650 printf("%s: Unknown relocation type %llx\n",
651 __func__, rel->info & R_MASK);
655 /* Check if the relocation is inside bounds */
656 if (map && ((newaddr < map->virtual_start) ||
657 newaddr > (map->virtual_start +
658 (map->num_pages << EFI_PAGE_SHIFT)))) {
659 printf("%s: Relocation at %p is out of range (%lx)\n",
660 __func__, p, newaddr);
664 debug("%s: Setting %p to %lx\n", __func__, p, newaddr);
666 flush_dcache_range((ulong)p & ~(EFI_CACHELINE_SIZE - 1),
667 ALIGN((ulong)&p[1], EFI_CACHELINE_SIZE));
674 invalidate_icache_all();
678 * efi_set_virtual_address_map() - change from physical to virtual mapping
680 * This function implements the SetVirtualAddressMap() runtime service.
682 * See the Unified Extensible Firmware Interface (UEFI) specification for
685 * @memory_map_size: size of the virtual map
686 * @descriptor_size: size of an entry in the map
687 * @descriptor_version: version of the map entries
688 * @virtmap: virtual address mapping information
689 * Return: status code
691 static efi_status_t EFIAPI efi_set_virtual_address_map(
692 efi_uintn_t memory_map_size,
693 efi_uintn_t descriptor_size,
694 uint32_t descriptor_version,
695 struct efi_mem_desc *virtmap)
697 efi_uintn_t n = memory_map_size / descriptor_size;
699 efi_status_t ret = EFI_INVALID_PARAMETER;
700 int rt_code_sections = 0;
701 struct efi_event *event;
703 EFI_ENTRY("%zx %zx %x %p", memory_map_size, descriptor_size,
704 descriptor_version, virtmap);
706 if (descriptor_version != EFI_MEMORY_DESCRIPTOR_VERSION ||
707 descriptor_size < sizeof(struct efi_mem_desc))
710 efi_virtmap = virtmap;
711 efi_descriptor_size = descriptor_size;
712 efi_descriptor_count = n;
716 * Further down we are cheating. While really we should implement
717 * SetVirtualAddressMap() events and ConvertPointer() to allow
718 * dynamically loaded drivers to expose runtime services, we don't
721 * So let's ensure we see exactly one single runtime section, as
722 * that is the built-in one. If we see more (or less), someone must
723 * have tried adding or removing to that which we don't support yet.
724 * In that case, let's better fail rather than expose broken runtime
727 for (i = 0; i < n; i++) {
728 struct efi_mem_desc *map = (void*)virtmap +
729 (descriptor_size * i);
731 if (map->type == EFI_RUNTIME_SERVICES_CODE)
735 if (rt_code_sections != 1) {
737 * We expose exactly one single runtime code section, so
738 * something is definitely going wrong.
743 /* Notify EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
744 list_for_each_entry(event, &efi_events, link) {
745 if (event->notify_function)
746 EFI_CALL_VOID(event->notify_function(
747 event, event->notify_context));
750 /* Rebind mmio pointers */
751 for (i = 0; i < n; i++) {
752 struct efi_mem_desc *map = (void*)virtmap +
753 (descriptor_size * i);
754 struct list_head *lhandle;
755 efi_physical_addr_t map_start = map->physical_start;
756 efi_physical_addr_t map_len = map->num_pages << EFI_PAGE_SHIFT;
757 efi_physical_addr_t map_end = map_start + map_len;
758 u64 off = map->virtual_start - map_start;
760 /* Adjust all mmio pointers in this region */
761 list_for_each(lhandle, &efi_runtime_mmio) {
762 struct efi_runtime_mmio_list *lmmio;
764 lmmio = list_entry(lhandle,
765 struct efi_runtime_mmio_list,
767 if ((map_start <= lmmio->paddr) &&
768 (map_end >= lmmio->paddr)) {
769 uintptr_t new_addr = lmmio->paddr + off;
770 *lmmio->ptr = (void *)new_addr;
773 if ((map_start <= (uintptr_t)systab.tables) &&
774 (map_end >= (uintptr_t)systab.tables)) {
775 char *ptr = (char *)systab.tables;
778 systab.tables = (struct efi_configuration_table *)ptr;
782 /* Relocate the runtime. See TODO above */
783 for (i = 0; i < n; i++) {
784 struct efi_mem_desc *map;
786 map = (void*)virtmap + (descriptor_size * i);
787 if (map->type == EFI_RUNTIME_SERVICES_CODE) {
788 ulong new_offset = map->virtual_start -
789 map->physical_start + gd->relocaddr;
791 efi_relocate_runtime_table(new_offset);
792 efi_runtime_relocate(new_offset, map);
799 return EFI_EXIT(ret);
803 * efi_add_runtime_mmio() - add memory-mapped IO region
805 * This function adds a memory-mapped IO region to the memory map to make it
806 * available at runtime.
808 * @mmio_ptr: pointer to a pointer to the start of the memory-mapped
810 * @len: size of the memory-mapped IO region
811 * Returns: status code
813 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
815 struct efi_runtime_mmio_list *newmmio;
816 uint64_t addr = *(uintptr_t *)mmio_ptr;
819 ret = efi_add_memory_map(addr, len, EFI_MMAP_IO);
820 if (ret != EFI_SUCCESS)
821 return EFI_OUT_OF_RESOURCES;
823 newmmio = calloc(1, sizeof(*newmmio));
825 return EFI_OUT_OF_RESOURCES;
826 newmmio->ptr = mmio_ptr;
827 newmmio->paddr = *(uintptr_t *)mmio_ptr;
829 list_add_tail(&newmmio->link, &efi_runtime_mmio);
835 * In the second stage, U-Boot has disappeared. To isolate our runtime code
836 * that at this point still exists from the rest, we put it into a special
841 * This means that we can not rely on any code outside of this file in any
842 * function or variable below this line.
844 * Please keep everything fully self-contained and annotated with
845 * __efi_runtime and __efi_runtime_data markers.
849 * Relocate the EFI runtime stub to a different place. We need to call this
850 * the first time we expose the runtime interface to a user and on set virtual
855 * efi_unimplemented() - replacement function, returns EFI_UNSUPPORTED
857 * This function is used after SetVirtualAddressMap() is called as replacement
858 * for services that are not available anymore due to constraints of the U-Boot
861 * Return: EFI_UNSUPPORTED
863 static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void)
865 return EFI_UNSUPPORTED;
869 * efi_update_capsule() - process information from operating system
871 * This function implements the UpdateCapsule() runtime service.
873 * See the Unified Extensible Firmware Interface (UEFI) specification for
876 * @capsule_header_array: pointer to array of virtual pointers
877 * @capsule_count: number of pointers in capsule_header_array
878 * @scatter_gather_list: pointer to arry of physical pointers
879 * Returns: status code
881 efi_status_t __efi_runtime EFIAPI efi_update_capsule(
882 struct efi_capsule_header **capsule_header_array,
883 efi_uintn_t capsule_count,
884 u64 scatter_gather_list)
886 return EFI_UNSUPPORTED;
890 * efi_query_capsule_caps() - check if capsule is supported
892 * This function implements the QueryCapsuleCapabilities() runtime service.
894 * See the Unified Extensible Firmware Interface (UEFI) specification for
897 * @capsule_header_array: pointer to array of virtual pointers
898 * @capsule_count: number of pointers in capsule_header_array
899 * @maximum_capsule_size: maximum capsule size
900 * @reset_type: type of reset needed for capsule update
901 * Returns: status code
903 efi_status_t __efi_runtime EFIAPI efi_query_capsule_caps(
904 struct efi_capsule_header **capsule_header_array,
905 efi_uintn_t capsule_count,
906 u64 *maximum_capsule_size,
909 return EFI_UNSUPPORTED;
912 struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
914 .signature = EFI_RUNTIME_SERVICES_SIGNATURE,
915 .revision = EFI_SPECIFICATION_VERSION,
916 .headersize = sizeof(struct efi_runtime_services),
918 .get_time = &efi_get_time_boottime,
919 .set_time = &efi_set_time_boottime,
920 .get_wakeup_time = (void *)&efi_unimplemented,
921 .set_wakeup_time = (void *)&efi_unimplemented,
922 .set_virtual_address_map = &efi_set_virtual_address_map,
923 .convert_pointer = efi_convert_pointer,
924 .get_variable = efi_get_variable,
925 .get_next_variable_name = efi_get_next_variable_name,
926 .set_variable = efi_set_variable,
927 .get_next_high_mono_count = (void *)&efi_unimplemented,
928 .reset_system = &efi_reset_system_boottime,
929 .update_capsule = efi_update_capsule,
930 .query_capsule_caps = efi_query_capsule_caps,
931 .query_variable_info = efi_query_variable_info,