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Tom Rinif739fcd2018-05-07 17:02:21 -04001// SPDX-License-Identifier: GPL-2.0+
Alexander Graf50149ea2016-03-04 01:10:01 +01002/*
3 * EFI application runtime services
4 *
5 * Copyright (c) 2016 Alexander Graf
Alexander Graf50149ea2016-03-04 01:10:01 +01006 */
7
8#include <common.h>
9#include <command.h>
Simon Glass1eb69ae2019-11-14 12:57:39 -070010#include <cpu_func.h>
Alexander Graf50149ea2016-03-04 01:10:01 +010011#include <dm.h>
Alexander Grafb34662d2018-06-18 17:23:11 +020012#include <elf.h>
Alexander Graf50149ea2016-03-04 01:10:01 +010013#include <efi_loader.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060014#include <log.h>
Simon Glass336d4612020-02-03 07:36:16 -070015#include <malloc.h>
Alexander Graf50149ea2016-03-04 01:10:01 +010016#include <rtc.h>
Simon Glass401d1c42020-10-30 21:38:53 -060017#include <asm/global_data.h>
Simon Glass3db71102019-11-14 12:57:16 -070018#include <u-boot/crc.h>
Alexander Graf50149ea2016-03-04 01:10:01 +010019
20/* For manual relocation support */
21DECLARE_GLOBAL_DATA_PTR;
22
Heinrich Schuchardt76be6872020-02-19 20:48:49 +010023/* GUID of the runtime properties table */
24static const efi_guid_t efi_rt_properties_table_guid =
25 EFI_RT_PROPERTIES_TABLE_GUID;
26
Alexander Graf80a48002016-08-16 21:08:45 +020027struct efi_runtime_mmio_list {
28 struct list_head link;
29 void **ptr;
30 u64 paddr;
31 u64 len;
32};
33
34/* This list contains all runtime available mmio regions */
Bin Meng6fc4fc32023-04-05 20:15:19 +080035static LIST_HEAD(efi_runtime_mmio);
Alexander Graf80a48002016-08-16 21:08:45 +020036
Alexander Graf3c63db92016-10-14 13:45:30 +020037static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void);
Alexander Graf50149ea2016-03-04 01:10:01 +010038
Simon Glass2d2b5b22018-06-11 23:26:40 -060039/*
Heinrich Schuchardt250b3252018-09-03 19:29:41 +020040 * TODO(sjg@chromium.org): These defines and structures should come from the ELF
41 * header for each architecture (or a generic header) rather than being repeated
42 * here.
Simon Glass2d2b5b22018-06-11 23:26:40 -060043 */
Alexander Grafbc028912018-06-18 17:23:08 +020044#if defined(__aarch64__)
Alexander Grafb34662d2018-06-18 17:23:11 +020045#define R_RELATIVE R_AARCH64_RELATIVE
Alexander Graf50149ea2016-03-04 01:10:01 +010046#define R_MASK 0xffffffffULL
47#define IS_RELA 1
Alexander Grafbc028912018-06-18 17:23:08 +020048#elif defined(__arm__)
Alexander Grafb34662d2018-06-18 17:23:11 +020049#define R_RELATIVE R_ARM_RELATIVE
Alexander Graf50149ea2016-03-04 01:10:01 +010050#define R_MASK 0xffULL
Heinrich Schuchardt3ce78292018-10-13 20:52:08 -070051#elif defined(__i386__)
Simon Glass65e4c0b2016-09-25 15:27:35 -060052#define R_RELATIVE R_386_RELATIVE
53#define R_MASK 0xffULL
Heinrich Schuchardt3ce78292018-10-13 20:52:08 -070054#elif defined(__x86_64__)
55#define R_RELATIVE R_X86_64_RELATIVE
56#define R_MASK 0xffffffffULL
57#define IS_RELA 1
Alexander Grafbc028912018-06-18 17:23:08 +020058#elif defined(__riscv)
Rick Chen6836adb2018-05-28 19:06:37 +080059#define R_RELATIVE R_RISCV_RELATIVE
60#define R_MASK 0xffULL
61#define IS_RELA 1
62
63struct dyn_sym {
64 ulong foo1;
65 ulong addr;
66 u32 foo2;
67 u32 foo3;
68};
Alexander Grafbc028912018-06-18 17:23:08 +020069#if (__riscv_xlen == 32)
Rick Chen6836adb2018-05-28 19:06:37 +080070#define R_ABSOLUTE R_RISCV_32
71#define SYM_INDEX 8
Alexander Grafbc028912018-06-18 17:23:08 +020072#elif (__riscv_xlen == 64)
Rick Chen6836adb2018-05-28 19:06:37 +080073#define R_ABSOLUTE R_RISCV_64
74#define SYM_INDEX 32
Alexander Grafbc028912018-06-18 17:23:08 +020075#else
76#error unknown riscv target
Rick Chen6836adb2018-05-28 19:06:37 +080077#endif
Alexander Graf50149ea2016-03-04 01:10:01 +010078#else
79#error Need to add relocation awareness
80#endif
81
82struct elf_rel {
83 ulong *offset;
84 ulong info;
85};
86
87struct elf_rela {
88 ulong *offset;
89 ulong info;
90 long addend;
91};
92
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +020093static __efi_runtime_data struct efi_mem_desc *efi_virtmap;
94static __efi_runtime_data efi_uintn_t efi_descriptor_count;
95static __efi_runtime_data efi_uintn_t efi_descriptor_size;
96
Alexander Graf50149ea2016-03-04 01:10:01 +010097/*
Heinrich Schuchardt250b3252018-09-03 19:29:41 +020098 * EFI runtime code lives in two stages. In the first stage, U-Boot and an EFI
Alexander Graf50149ea2016-03-04 01:10:01 +010099 * payload are running concurrently at the same time. In this mode, we can
100 * handle a good number of runtime callbacks
101 */
102
Heinrich Schuchardt76be6872020-02-19 20:48:49 +0100103/**
104 * efi_init_runtime_supported() - create runtime properties table
105 *
106 * Create a configuration table specifying which services are available at
107 * runtime.
108 *
109 * Return: status code
110 */
AKASHI Takahiroe771b4b2019-06-05 13:21:38 +0900111efi_status_t efi_init_runtime_supported(void)
112{
Heinrich Schuchardt76be6872020-02-19 20:48:49 +0100113 efi_status_t ret;
114 struct efi_rt_properties_table *rt_table;
115
116 ret = efi_allocate_pool(EFI_RUNTIME_SERVICES_DATA,
117 sizeof(struct efi_rt_properties_table),
118 (void **)&rt_table);
119 if (ret != EFI_SUCCESS)
120 return ret;
121
122 rt_table->version = EFI_RT_PROPERTIES_TABLE_VERSION;
123 rt_table->length = sizeof(struct efi_rt_properties_table);
124 rt_table->runtime_services_supported =
Heinrich Schuchardtb02a7072020-03-24 19:54:53 +0000125 EFI_RT_SUPPORTED_GET_VARIABLE |
126 EFI_RT_SUPPORTED_GET_NEXT_VARIABLE_NAME |
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200127 EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP |
128 EFI_RT_SUPPORTED_CONVERT_POINTER;
AKASHI Takahiroe771b4b2019-06-05 13:21:38 +0900129
130 /*
131 * This value must be synced with efi_runtime_detach_list
132 * as well as efi_runtime_services.
133 */
Heinrich Schuchardt953661a2019-07-05 18:12:16 +0200134#ifdef CONFIG_EFI_HAVE_RUNTIME_RESET
Heinrich Schuchardt76be6872020-02-19 20:48:49 +0100135 rt_table->runtime_services_supported |= EFI_RT_SUPPORTED_RESET_SYSTEM;
AKASHI Takahiroe771b4b2019-06-05 13:21:38 +0900136#endif
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200137
Heinrich Schuchardt76be6872020-02-19 20:48:49 +0100138 ret = efi_install_configuration_table(&efi_rt_properties_table_guid,
139 rt_table);
140 return ret;
AKASHI Takahiroe771b4b2019-06-05 13:21:38 +0900141}
142
Heinrich Schuchardta39f39c2018-07-29 09:49:04 +0200143/**
Heinrich Schuchardtb0dd8cb2020-06-28 16:30:29 +0200144 * efi_memcpy_runtime() - copy memory area
145 *
146 * At runtime memcpy() is not available.
147 *
Heinrich Schuchardtebbad022020-07-22 07:56:14 +0200148 * Overlapping memory areas can be copied safely if src >= dest.
149 *
Heinrich Schuchardtb0dd8cb2020-06-28 16:30:29 +0200150 * @dest: destination buffer
151 * @src: source buffer
152 * @n: number of bytes to copy
153 * Return: pointer to destination buffer
154 */
155void __efi_runtime efi_memcpy_runtime(void *dest, const void *src, size_t n)
156{
157 u8 *d = dest;
158 const u8 *s = src;
159
160 for (; n; --n)
161 *d++ = *s++;
162}
163
164/**
Heinrich Schuchardta39f39c2018-07-29 09:49:04 +0200165 * efi_update_table_header_crc32() - Update crc32 in table header
166 *
167 * @table: EFI table
168 */
169void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table)
170{
171 table->crc32 = 0;
172 table->crc32 = crc32(0, (const unsigned char *)table,
173 table->headersize);
174}
175
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200176/**
Heinrich Schuchardt250b3252018-09-03 19:29:41 +0200177 * efi_reset_system_boottime() - reset system at boot time
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200178 *
179 * This function implements the ResetSystem() runtime service before
180 * SetVirtualAddressMap() is called.
181 *
182 * See the Unified Extensible Firmware Interface (UEFI) specification for
183 * details.
184 *
185 * @reset_type: type of reset to perform
186 * @reset_status: status code for the reset
187 * @data_size: size of reset_data
188 * @reset_data: information about the reset
189 */
Alexander Graf80a48002016-08-16 21:08:45 +0200190static void EFIAPI efi_reset_system_boottime(
191 enum efi_reset_type reset_type,
192 efi_status_t reset_status,
193 unsigned long data_size, void *reset_data)
Alexander Graf50149ea2016-03-04 01:10:01 +0100194{
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100195 struct efi_event *evt;
196
Alexander Graf50149ea2016-03-04 01:10:01 +0100197 EFI_ENTRY("%d %lx %lx %p", reset_type, reset_status, data_size,
198 reset_data);
199
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100200 /* Notify reset */
201 list_for_each_entry(evt, &efi_events, link) {
202 if (evt->group &&
203 !guidcmp(evt->group,
204 &efi_guid_event_group_reset_system)) {
Heinrich Schuchardt7eaa9002019-06-07 06:47:01 +0200205 efi_signal_event(evt);
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100206 break;
207 }
208 }
Alexander Graf50149ea2016-03-04 01:10:01 +0100209 switch (reset_type) {
210 case EFI_RESET_COLD:
211 case EFI_RESET_WARM:
Heinrich Schuchardt482fc902018-02-06 22:00:22 +0100212 case EFI_RESET_PLATFORM_SPECIFIC:
Alexander Graf50149ea2016-03-04 01:10:01 +0100213 do_reset(NULL, 0, 0, NULL);
214 break;
215 case EFI_RESET_SHUTDOWN:
Heinrich Schuchardte706ed72018-10-16 07:44:53 +0200216#ifdef CONFIG_CMD_POWEROFF
217 do_poweroff(NULL, 0, 0, NULL);
218#endif
Alexander Graf50149ea2016-03-04 01:10:01 +0100219 break;
220 }
221
Alexander Graf80a48002016-08-16 21:08:45 +0200222 while (1) { }
Alexander Graf50149ea2016-03-04 01:10:01 +0100223}
224
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200225/**
Heinrich Schuchardt250b3252018-09-03 19:29:41 +0200226 * efi_get_time_boottime() - get current time at boot time
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200227 *
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200228 * This function implements the GetTime runtime service before
229 * SetVirtualAddressMap() is called.
230 *
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200231 * See the Unified Extensible Firmware Interface (UEFI) specification
232 * for details.
233 *
234 * @time: pointer to structure to receive current time
235 * @capabilities: pointer to structure to receive RTC properties
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200236 * Returns: status code
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200237 */
Alexander Graf80a48002016-08-16 21:08:45 +0200238static efi_status_t EFIAPI efi_get_time_boottime(
239 struct efi_time *time,
240 struct efi_time_cap *capabilities)
Alexander Graf50149ea2016-03-04 01:10:01 +0100241{
Heinrich Schuchardt5ec48e32019-05-31 22:56:02 +0200242#ifdef CONFIG_EFI_GET_TIME
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200243 efi_status_t ret = EFI_SUCCESS;
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200244 struct rtc_time tm;
Alexander Graf50149ea2016-03-04 01:10:01 +0100245 struct udevice *dev;
246
247 EFI_ENTRY("%p %p", time, capabilities);
248
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200249 if (!time) {
250 ret = EFI_INVALID_PARAMETER;
251 goto out;
252 }
Heinrich Schuchardtbb2b13d2019-05-19 21:41:28 +0200253 if (uclass_get_device(UCLASS_RTC, 0, &dev) ||
254 dm_rtc_get(dev, &tm)) {
255 ret = EFI_UNSUPPORTED;
256 goto out;
257 }
258 if (dm_rtc_get(dev, &tm)) {
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200259 ret = EFI_DEVICE_ERROR;
260 goto out;
261 }
Alexander Graf50149ea2016-03-04 01:10:01 +0100262
263 memset(time, 0, sizeof(*time));
264 time->year = tm.tm_year;
265 time->month = tm.tm_mon;
266 time->day = tm.tm_mday;
267 time->hour = tm.tm_hour;
268 time->minute = tm.tm_min;
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200269 time->second = tm.tm_sec;
Heinrich Schuchardt0eae5522020-10-23 05:30:29 +0200270 if (tm.tm_isdst > 0)
Heinrich Schuchardt38b9a792019-05-31 22:08:45 +0200271 time->daylight =
272 EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT;
Heinrich Schuchardt0eae5522020-10-23 05:30:29 +0200273 else if (!tm.tm_isdst)
274 time->daylight = EFI_TIME_ADJUST_DAYLIGHT;
275 else
276 time->daylight = 0;
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200277 time->timezone = EFI_UNSPECIFIED_TIMEZONE;
Alexander Graf50149ea2016-03-04 01:10:01 +0100278
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200279 if (capabilities) {
280 /* Set reasonable dummy values */
281 capabilities->resolution = 1; /* 1 Hz */
282 capabilities->accuracy = 100000000; /* 100 ppm */
283 capabilities->sets_to_zero = false;
284 }
285out:
286 return EFI_EXIT(ret);
Alexander Graf50149ea2016-03-04 01:10:01 +0100287#else
Heinrich Schuchardt49de2452018-07-07 23:39:14 +0200288 EFI_ENTRY("%p %p", time, capabilities);
Heinrich Schuchardtbb2b13d2019-05-19 21:41:28 +0200289 return EFI_EXIT(EFI_UNSUPPORTED);
Alexander Graf50149ea2016-03-04 01:10:01 +0100290#endif
291}
292
Heinrich Schuchardt5ec48e32019-05-31 22:56:02 +0200293#ifdef CONFIG_EFI_SET_TIME
Heinrich Schuchardte6bcc352019-05-31 07:35:19 +0200294
295/**
296 * efi_validate_time() - checks if timestamp is valid
297 *
298 * @time: timestamp to validate
299 * Returns: 0 if timestamp is valid, 1 otherwise
300 */
301static int efi_validate_time(struct efi_time *time)
302{
303 return (!time ||
304 time->year < 1900 || time->year > 9999 ||
305 !time->month || time->month > 12 || !time->day ||
306 time->day > rtc_month_days(time->month - 1, time->year) ||
307 time->hour > 23 || time->minute > 59 || time->second > 59 ||
308 time->nanosecond > 999999999 ||
309 time->daylight &
310 ~(EFI_TIME_IN_DAYLIGHT | EFI_TIME_ADJUST_DAYLIGHT) ||
311 ((time->timezone < -1440 || time->timezone > 1440) &&
312 time->timezone != EFI_UNSPECIFIED_TIMEZONE));
313}
314
315#endif
316
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200317/**
318 * efi_set_time_boottime() - set current time
319 *
320 * This function implements the SetTime() runtime service before
321 * SetVirtualAddressMap() is called.
322 *
323 * See the Unified Extensible Firmware Interface (UEFI) specification
324 * for details.
325 *
326 * @time: pointer to structure to with current time
327 * Returns: status code
328 */
329static efi_status_t EFIAPI efi_set_time_boottime(struct efi_time *time)
330{
Heinrich Schuchardt5ec48e32019-05-31 22:56:02 +0200331#ifdef CONFIG_EFI_SET_TIME
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200332 efi_status_t ret = EFI_SUCCESS;
333 struct rtc_time tm;
334 struct udevice *dev;
Alexander Graf80a48002016-08-16 21:08:45 +0200335
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200336 EFI_ENTRY("%p", time);
337
Heinrich Schuchardte6bcc352019-05-31 07:35:19 +0200338 if (efi_validate_time(time)) {
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200339 ret = EFI_INVALID_PARAMETER;
340 goto out;
341 }
342
343 if (uclass_get_device(UCLASS_RTC, 0, &dev)) {
344 ret = EFI_UNSUPPORTED;
345 goto out;
346 }
347
348 memset(&tm, 0, sizeof(tm));
349 tm.tm_year = time->year;
350 tm.tm_mon = time->month;
351 tm.tm_mday = time->day;
352 tm.tm_hour = time->hour;
353 tm.tm_min = time->minute;
354 tm.tm_sec = time->second;
Heinrich Schuchardt0eae5522020-10-23 05:30:29 +0200355 switch (time->daylight) {
356 case EFI_TIME_ADJUST_DAYLIGHT:
357 tm.tm_isdst = 0;
358 break;
359 case EFI_TIME_ADJUST_DAYLIGHT | EFI_TIME_IN_DAYLIGHT:
360 tm.tm_isdst = 1;
361 break;
362 default:
363 tm.tm_isdst = -1;
364 break;
365 }
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200366 /* Calculate day of week */
367 rtc_calc_weekday(&tm);
368
369 if (dm_rtc_set(dev, &tm))
370 ret = EFI_DEVICE_ERROR;
371out:
372 return EFI_EXIT(ret);
373#else
374 EFI_ENTRY("%p", time);
375 return EFI_EXIT(EFI_UNSUPPORTED);
376#endif
377}
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200378/**
379 * efi_reset_system() - reset system
380 *
381 * This function implements the ResetSystem() runtime service after
Heinrich Schuchardtf03a8792020-08-22 08:29:53 +0200382 * SetVirtualAddressMap() is called. As this placeholder cannot reset the
383 * system it simply return to the caller.
384 *
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200385 * Boards may override the helpers below to implement reset functionality.
386 *
387 * See the Unified Extensible Firmware Interface (UEFI) specification for
388 * details.
389 *
390 * @reset_type: type of reset to perform
391 * @reset_status: status code for the reset
392 * @data_size: size of reset_data
393 * @reset_data: information about the reset
394 */
Alexander Graf3c63db92016-10-14 13:45:30 +0200395void __weak __efi_runtime EFIAPI efi_reset_system(
Alexander Graf80a48002016-08-16 21:08:45 +0200396 enum efi_reset_type reset_type,
397 efi_status_t reset_status,
398 unsigned long data_size, void *reset_data)
399{
Heinrich Schuchardtf03a8792020-08-22 08:29:53 +0200400 return;
Alexander Graf80a48002016-08-16 21:08:45 +0200401}
402
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200403/**
404 * efi_reset_system_init() - initialize the reset driver
405 *
406 * Boards may override this function to initialize the reset driver.
407 */
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100408efi_status_t __weak efi_reset_system_init(void)
Alexander Graf80a48002016-08-16 21:08:45 +0200409{
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100410 return EFI_SUCCESS;
Alexander Graf80a48002016-08-16 21:08:45 +0200411}
412
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200413/**
414 * efi_get_time() - get current time
415 *
416 * This function implements the GetTime runtime service after
417 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
418 * anymore only an error code is returned.
419 *
420 * See the Unified Extensible Firmware Interface (UEFI) specification
421 * for details.
422 *
423 * @time: pointer to structure to receive current time
424 * @capabilities: pointer to structure to receive RTC properties
425 * Returns: status code
426 */
Alexander Graf3c63db92016-10-14 13:45:30 +0200427efi_status_t __weak __efi_runtime EFIAPI efi_get_time(
Alexander Graf80a48002016-08-16 21:08:45 +0200428 struct efi_time *time,
429 struct efi_time_cap *capabilities)
430{
Heinrich Schuchardtc5b63be2019-06-13 18:42:40 +0200431 return EFI_UNSUPPORTED;
Alexander Graf80a48002016-08-16 21:08:45 +0200432}
433
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200434/**
435 * efi_set_time() - set current time
436 *
437 * This function implements the SetTime runtime service after
438 * SetVirtualAddressMap() is called. As the U-Boot driver are not available
439 * anymore only an error code is returned.
440 *
441 * See the Unified Extensible Firmware Interface (UEFI) specification
442 * for details.
443 *
444 * @time: pointer to structure to with current time
445 * Returns: status code
446 */
447efi_status_t __weak __efi_runtime EFIAPI efi_set_time(struct efi_time *time)
448{
449 return EFI_UNSUPPORTED;
450}
451
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000452/**
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900453 * efi_update_capsule_unsupported() - process information from operating system
454 *
455 * This function implements the UpdateCapsule() runtime service.
456 *
457 * See the Unified Extensible Firmware Interface (UEFI) specification for
458 * details.
459 *
460 * @capsule_header_array: pointer to array of virtual pointers
461 * @capsule_count: number of pointers in capsule_header_array
462 * @scatter_gather_list: pointer to array of physical pointers
463 * Returns: status code
464 */
Heinrich Schuchardt6c2377f2023-02-10 08:56:06 +0100465static efi_status_t __efi_runtime EFIAPI efi_update_capsule_unsupported(
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900466 struct efi_capsule_header **capsule_header_array,
467 efi_uintn_t capsule_count,
468 u64 scatter_gather_list)
469{
470 return EFI_UNSUPPORTED;
471}
472
473/**
474 * efi_query_capsule_caps_unsupported() - check if capsule is supported
475 *
476 * This function implements the QueryCapsuleCapabilities() runtime service.
477 *
478 * See the Unified Extensible Firmware Interface (UEFI) specification for
479 * details.
480 *
481 * @capsule_header_array: pointer to array of virtual pointers
482 * @capsule_count: number of pointers in capsule_header_array
483 * @maximum_capsule_size: maximum capsule size
484 * @reset_type: type of reset needed for capsule update
485 * Returns: status code
486 */
Heinrich Schuchardt6c2377f2023-02-10 08:56:06 +0100487static efi_status_t __efi_runtime EFIAPI efi_query_capsule_caps_unsupported(
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900488 struct efi_capsule_header **capsule_header_array,
489 efi_uintn_t capsule_count,
490 u64 *maximum_capsule_size,
491 u32 *reset_type)
492{
493 return EFI_UNSUPPORTED;
494}
495
496/**
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000497 * efi_is_runtime_service_pointer() - check if pointer points to runtime table
498 *
499 * @p: pointer to check
500 * Return: true if the pointer points to a service function pointer in the
501 * runtime table
502 */
503static bool efi_is_runtime_service_pointer(void *p)
Alexander Graf50149ea2016-03-04 01:10:01 +0100504{
Heinrich Schuchardt14b40482019-07-11 20:15:09 +0200505 return (p >= (void *)&efi_runtime_services.get_time &&
506 p <= (void *)&efi_runtime_services.query_variable_info) ||
507 p == (void *)&efi_events.prev ||
508 p == (void *)&efi_events.next;
Alexander Graf50149ea2016-03-04 01:10:01 +0100509}
510
Heinrich Schuchardtb23ffcb2019-07-05 18:12:21 +0200511/**
512 * efi_runtime_detach() - detach unimplemented runtime functions
513 */
Heinrich Schuchardt7f951042019-07-05 17:42:16 +0200514void efi_runtime_detach(void)
Alexander Graf50149ea2016-03-04 01:10:01 +0100515{
Heinrich Schuchardtb23ffcb2019-07-05 18:12:21 +0200516 efi_runtime_services.reset_system = efi_reset_system;
517 efi_runtime_services.get_time = efi_get_time;
518 efi_runtime_services.set_time = efi_set_time;
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900519 if (IS_ENABLED(CONFIG_EFI_RUNTIME_UPDATE_CAPSULE)) {
520 /* won't support at runtime */
521 efi_runtime_services.update_capsule =
522 efi_update_capsule_unsupported;
523 efi_runtime_services.query_capsule_caps =
524 efi_query_capsule_caps_unsupported;
525 }
Alexander Graf50149ea2016-03-04 01:10:01 +0100526
Heinrich Schuchardtb23ffcb2019-07-05 18:12:21 +0200527 /* Update CRC32 */
528 efi_update_table_header_crc32(&efi_runtime_services.hdr);
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000529}
530
Heinrich Schuchardtee8ebaa2019-06-29 03:32:52 +0200531/**
532 * efi_set_virtual_address_map_runtime() - change from physical to virtual
533 * mapping
534 *
535 * This function implements the SetVirtualAddressMap() runtime service after
536 * it is first called.
537 *
538 * See the Unified Extensible Firmware Interface (UEFI) specification for
539 * details.
540 *
541 * @memory_map_size: size of the virtual map
542 * @descriptor_size: size of an entry in the map
543 * @descriptor_version: version of the map entries
544 * @virtmap: virtual address mapping information
545 * Return: status code EFI_UNSUPPORTED
546 */
Heinrich Schuchardt96185602019-07-12 22:41:43 +0200547static __efi_runtime efi_status_t EFIAPI efi_set_virtual_address_map_runtime(
Heinrich Schuchardt24e67222019-07-27 20:28:47 +0200548 efi_uintn_t memory_map_size,
549 efi_uintn_t descriptor_size,
Heinrich Schuchardtee8ebaa2019-06-29 03:32:52 +0200550 uint32_t descriptor_version,
551 struct efi_mem_desc *virtmap)
552{
553 return EFI_UNSUPPORTED;
554}
555
556/**
557 * efi_convert_pointer_runtime() - convert from physical to virtual pointer
558 *
559 * This function implements the ConvertPointer() runtime service after
560 * the first call to SetVirtualAddressMap().
561 *
562 * See the Unified Extensible Firmware Interface (UEFI) specification for
563 * details.
564 *
565 * @debug_disposition: indicates if pointer may be converted to NULL
566 * @address: pointer to be converted
567 * Return: status code EFI_UNSUPPORTED
568 */
569static __efi_runtime efi_status_t EFIAPI efi_convert_pointer_runtime(
570 efi_uintn_t debug_disposition, void **address)
571{
572 return EFI_UNSUPPORTED;
573}
574
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200575/**
Heinrich Schuchardt7aeceff2020-03-22 08:28:15 +0100576 * efi_convert_pointer() - convert from physical to virtual pointer
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200577 *
578 * This function implements the ConvertPointer() runtime service until
579 * the first call to SetVirtualAddressMap().
580 *
581 * See the Unified Extensible Firmware Interface (UEFI) specification for
582 * details.
583 *
584 * @debug_disposition: indicates if pointer may be converted to NULL
585 * @address: pointer to be converted
Heinrich Schuchardt7aeceff2020-03-22 08:28:15 +0100586 * Return: status code
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200587 */
Heinrich Schuchardta44d2a22020-03-24 18:05:22 +0100588__efi_runtime efi_status_t EFIAPI
589efi_convert_pointer(efi_uintn_t debug_disposition, void **address)
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200590{
Heinrich Schuchardta27c78f2020-07-07 03:10:12 +0200591 efi_physical_addr_t addr;
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200592 efi_uintn_t i;
593 efi_status_t ret = EFI_NOT_FOUND;
594
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200595 if (!efi_virtmap) {
596 ret = EFI_UNSUPPORTED;
597 goto out;
598 }
599
600 if (!address) {
601 ret = EFI_INVALID_PARAMETER;
602 goto out;
603 }
Heinrich Schuchardt724d2812020-03-24 17:52:40 +0100604 if (!*address) {
605 if (debug_disposition & EFI_OPTIONAL_PTR)
606 return EFI_SUCCESS;
607 else
608 return EFI_INVALID_PARAMETER;
609 }
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200610
Heinrich Schuchardta27c78f2020-07-07 03:10:12 +0200611 addr = (uintptr_t)*address;
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200612 for (i = 0; i < efi_descriptor_count; i++) {
613 struct efi_mem_desc *map = (void *)efi_virtmap +
614 (efi_descriptor_size * i);
615
616 if (addr >= map->physical_start &&
617 (addr < map->physical_start
618 + (map->num_pages << EFI_PAGE_SHIFT))) {
619 *address = (void *)(uintptr_t)
620 (addr + map->virtual_start -
621 map->physical_start);
622
623 ret = EFI_SUCCESS;
624 break;
625 }
626 }
627
628out:
Heinrich Schuchardta44d2a22020-03-24 18:05:22 +0100629 return ret;
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200630}
631
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000632static __efi_runtime void efi_relocate_runtime_table(ulong offset)
633{
634 ulong patchoff;
635 void **pos;
636
637 /* Relocate the runtime services pointers */
638 patchoff = offset - gd->relocaddr;
639 for (pos = (void **)&efi_runtime_services.get_time;
640 pos <= (void **)&efi_runtime_services.query_variable_info; ++pos) {
Heinrich Schuchardtee8ebaa2019-06-29 03:32:52 +0200641 if (*pos)
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000642 *pos += patchoff;
Alexander Graf50149ea2016-03-04 01:10:01 +0100643 }
Heinrich Schuchardta39f39c2018-07-29 09:49:04 +0200644
Heinrich Schuchardtee8ebaa2019-06-29 03:32:52 +0200645 /*
646 * The entry for SetVirtualAddress() must point to a physical address.
647 * After the first execution the service must return EFI_UNSUPPORTED.
648 */
649 efi_runtime_services.set_virtual_address_map =
650 &efi_set_virtual_address_map_runtime;
651
652 /*
653 * The entry for ConvertPointer() must point to a physical address.
654 * The service is not usable after SetVirtualAddress().
655 */
656 efi_runtime_services.convert_pointer = &efi_convert_pointer_runtime;
657
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200658 /*
659 * TODO: Update UEFI variable RuntimeServicesSupported removing flags
660 * EFI_RT_SUPPORTED_SET_VIRTUAL_ADDRESS_MAP and
661 * EFI_RT_SUPPORTED_CONVERT_POINTER as required by the UEFI spec 2.8.
662 */
663
Heinrich Schuchardt250b3252018-09-03 19:29:41 +0200664 /* Update CRC32 */
Heinrich Schuchardta39f39c2018-07-29 09:49:04 +0200665 efi_update_table_header_crc32(&efi_runtime_services.hdr);
Alexander Graf50149ea2016-03-04 01:10:01 +0100666}
667
668/* Relocate EFI runtime to uboot_reloc_base = offset */
669void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map)
670{
671#ifdef IS_RELA
672 struct elf_rela *rel = (void*)&__efi_runtime_rel_start;
673#else
674 struct elf_rel *rel = (void*)&__efi_runtime_rel_start;
Simon Glass98463902022-10-20 18:22:39 -0600675 static ulong lastoff = CONFIG_TEXT_BASE;
Alexander Graf50149ea2016-03-04 01:10:01 +0100676#endif
677
Alexander Grafedcef3b2016-06-02 11:38:27 +0200678 debug("%s: Relocating to offset=%lx\n", __func__, offset);
Alexander Graf50149ea2016-03-04 01:10:01 +0100679 for (; (ulong)rel < (ulong)&__efi_runtime_rel_stop; rel++) {
Simon Glass98463902022-10-20 18:22:39 -0600680 ulong base = CONFIG_TEXT_BASE;
Alexander Graf50149ea2016-03-04 01:10:01 +0100681 ulong *p;
682 ulong newaddr;
683
684 p = (void*)((ulong)rel->offset - base) + gd->relocaddr;
685
Heinrich Schuchardt9f8932d2019-08-14 06:49:09 +0200686 /*
687 * The runtime services table is updated in
688 * efi_relocate_runtime_table()
689 */
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000690 if (map && efi_is_runtime_service_pointer(p))
691 continue;
692
Heinrich Schuchardt3ce78292018-10-13 20:52:08 -0700693 debug("%s: rel->info=%#lx *p=%#lx rel->offset=%p\n", __func__,
694 rel->info, *p, rel->offset);
Alexander Graf50149ea2016-03-04 01:10:01 +0100695
Rick Chen6836adb2018-05-28 19:06:37 +0800696 switch (rel->info & R_MASK) {
697 case R_RELATIVE:
Alexander Graf50149ea2016-03-04 01:10:01 +0100698#ifdef IS_RELA
Simon Glass98463902022-10-20 18:22:39 -0600699 newaddr = rel->addend + offset - CONFIG_TEXT_BASE;
Alexander Graf50149ea2016-03-04 01:10:01 +0100700#else
701 newaddr = *p - lastoff + offset;
702#endif
Rick Chen6836adb2018-05-28 19:06:37 +0800703 break;
704#ifdef R_ABSOLUTE
705 case R_ABSOLUTE: {
706 ulong symidx = rel->info >> SYM_INDEX;
707 extern struct dyn_sym __dyn_sym_start[];
708 newaddr = __dyn_sym_start[symidx].addr + offset;
Alexander Grafafdc4fc2018-11-04 22:25:22 +0100709#ifdef IS_RELA
Simon Glass98463902022-10-20 18:22:39 -0600710 newaddr -= CONFIG_TEXT_BASE;
Alexander Grafafdc4fc2018-11-04 22:25:22 +0100711#endif
Rick Chen6836adb2018-05-28 19:06:37 +0800712 break;
713 }
714#endif
715 default:
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000716 printf("%s: Unknown relocation type %llx\n",
717 __func__, rel->info & R_MASK);
Rick Chen6836adb2018-05-28 19:06:37 +0800718 continue;
719 }
Alexander Graf50149ea2016-03-04 01:10:01 +0100720
721 /* Check if the relocation is inside bounds */
722 if (map && ((newaddr < map->virtual_start) ||
Heinrich Schuchardt591cf2e2017-09-18 22:11:34 +0200723 newaddr > (map->virtual_start +
724 (map->num_pages << EFI_PAGE_SHIFT)))) {
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000725 printf("%s: Relocation at %p is out of range (%lx)\n",
726 __func__, p, newaddr);
Alexander Graf50149ea2016-03-04 01:10:01 +0100727 continue;
728 }
729
Alexander Grafedcef3b2016-06-02 11:38:27 +0200730 debug("%s: Setting %p to %lx\n", __func__, p, newaddr);
Alexander Graf50149ea2016-03-04 01:10:01 +0100731 *p = newaddr;
Alexander Graf36c37a82016-04-11 23:20:39 +0200732 flush_dcache_range((ulong)p & ~(EFI_CACHELINE_SIZE - 1),
733 ALIGN((ulong)&p[1], EFI_CACHELINE_SIZE));
Alexander Graf50149ea2016-03-04 01:10:01 +0100734 }
735
736#ifndef IS_RELA
737 lastoff = offset;
738#endif
739
740 invalidate_icache_all();
741}
742
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200743/**
744 * efi_set_virtual_address_map() - change from physical to virtual mapping
745 *
746 * This function implements the SetVirtualAddressMap() runtime service.
747 *
748 * See the Unified Extensible Firmware Interface (UEFI) specification for
749 * details.
750 *
751 * @memory_map_size: size of the virtual map
752 * @descriptor_size: size of an entry in the map
753 * @descriptor_version: version of the map entries
754 * @virtmap: virtual address mapping information
755 * Return: status code
756 */
Alexander Graf50149ea2016-03-04 01:10:01 +0100757static efi_status_t EFIAPI efi_set_virtual_address_map(
Heinrich Schuchardt24e67222019-07-27 20:28:47 +0200758 efi_uintn_t memory_map_size,
759 efi_uintn_t descriptor_size,
Alexander Graf50149ea2016-03-04 01:10:01 +0100760 uint32_t descriptor_version,
761 struct efi_mem_desc *virtmap)
762{
Heinrich Schuchardt24e67222019-07-27 20:28:47 +0200763 efi_uintn_t n = memory_map_size / descriptor_size;
764 efi_uintn_t i;
Heinrich Schuchardt53e1d8f2019-08-14 05:19:37 +0200765 efi_status_t ret = EFI_INVALID_PARAMETER;
Alexander Graf5c38e052018-12-11 10:00:42 +0100766 int rt_code_sections = 0;
Heinrich Schuchardt14b40482019-07-11 20:15:09 +0200767 struct efi_event *event;
Alexander Graf50149ea2016-03-04 01:10:01 +0100768
Heinrich Schuchardt24e67222019-07-27 20:28:47 +0200769 EFI_ENTRY("%zx %zx %x %p", memory_map_size, descriptor_size,
Alexander Graf50149ea2016-03-04 01:10:01 +0100770 descriptor_version, virtmap);
771
Heinrich Schuchardt53e1d8f2019-08-14 05:19:37 +0200772 if (descriptor_version != EFI_MEMORY_DESCRIPTOR_VERSION ||
773 descriptor_size < sizeof(struct efi_mem_desc))
774 goto out;
775
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200776 efi_virtmap = virtmap;
777 efi_descriptor_size = descriptor_size;
778 efi_descriptor_count = n;
779
Alexander Graf5c38e052018-12-11 10:00:42 +0100780 /*
781 * TODO:
782 * Further down we are cheating. While really we should implement
783 * SetVirtualAddressMap() events and ConvertPointer() to allow
784 * dynamically loaded drivers to expose runtime services, we don't
785 * today.
786 *
787 * So let's ensure we see exactly one single runtime section, as
788 * that is the built-in one. If we see more (or less), someone must
789 * have tried adding or removing to that which we don't support yet.
790 * In that case, let's better fail rather than expose broken runtime
791 * services.
792 */
793 for (i = 0; i < n; i++) {
794 struct efi_mem_desc *map = (void*)virtmap +
795 (descriptor_size * i);
796
797 if (map->type == EFI_RUNTIME_SERVICES_CODE)
798 rt_code_sections++;
799 }
800
801 if (rt_code_sections != 1) {
802 /*
803 * We expose exactly one single runtime code section, so
804 * something is definitely going wrong.
805 */
Heinrich Schuchardt53e1d8f2019-08-14 05:19:37 +0200806 goto out;
Alexander Graf5c38e052018-12-11 10:00:42 +0100807 }
808
Heinrich Schuchardt14b40482019-07-11 20:15:09 +0200809 /* Notify EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE */
810 list_for_each_entry(event, &efi_events, link) {
811 if (event->notify_function)
812 EFI_CALL_VOID(event->notify_function(
813 event, event->notify_context));
814 }
815
Alexander Graf80a48002016-08-16 21:08:45 +0200816 /* Rebind mmio pointers */
817 for (i = 0; i < n; i++) {
818 struct efi_mem_desc *map = (void*)virtmap +
819 (descriptor_size * i);
820 struct list_head *lhandle;
821 efi_physical_addr_t map_start = map->physical_start;
822 efi_physical_addr_t map_len = map->num_pages << EFI_PAGE_SHIFT;
823 efi_physical_addr_t map_end = map_start + map_len;
Heinrich Schuchardt07240da2018-08-04 23:16:06 +0200824 u64 off = map->virtual_start - map_start;
Alexander Graf80a48002016-08-16 21:08:45 +0200825
826 /* Adjust all mmio pointers in this region */
827 list_for_each(lhandle, &efi_runtime_mmio) {
828 struct efi_runtime_mmio_list *lmmio;
829
830 lmmio = list_entry(lhandle,
831 struct efi_runtime_mmio_list,
832 link);
833 if ((map_start <= lmmio->paddr) &&
834 (map_end >= lmmio->paddr)) {
Alexander Graf80a48002016-08-16 21:08:45 +0200835 uintptr_t new_addr = lmmio->paddr + off;
836 *lmmio->ptr = (void *)new_addr;
837 }
838 }
Heinrich Schuchardt07240da2018-08-04 23:16:06 +0200839 if ((map_start <= (uintptr_t)systab.tables) &&
840 (map_end >= (uintptr_t)systab.tables)) {
841 char *ptr = (char *)systab.tables;
842
843 ptr += off;
844 systab.tables = (struct efi_configuration_table *)ptr;
845 }
Alexander Graf80a48002016-08-16 21:08:45 +0200846 }
847
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000848 /* Relocate the runtime. See TODO above */
Alexander Graf50149ea2016-03-04 01:10:01 +0100849 for (i = 0; i < n; i++) {
850 struct efi_mem_desc *map;
851
852 map = (void*)virtmap + (descriptor_size * i);
853 if (map->type == EFI_RUNTIME_SERVICES_CODE) {
Alexander Graf80a48002016-08-16 21:08:45 +0200854 ulong new_offset = map->virtual_start -
Alexander Graf5c38e052018-12-11 10:00:42 +0100855 map->physical_start + gd->relocaddr;
Alexander Graf50149ea2016-03-04 01:10:01 +0100856
Heinrich Schuchardt24a238f2019-06-20 22:00:02 +0000857 efi_relocate_runtime_table(new_offset);
Alexander Graf50149ea2016-03-04 01:10:01 +0100858 efi_runtime_relocate(new_offset, map);
Heinrich Schuchardt53e1d8f2019-08-14 05:19:37 +0200859 ret = EFI_SUCCESS;
860 goto out;
Alexander Graf50149ea2016-03-04 01:10:01 +0100861 }
862 }
863
Heinrich Schuchardt53e1d8f2019-08-14 05:19:37 +0200864out:
865 return EFI_EXIT(ret);
Alexander Graf50149ea2016-03-04 01:10:01 +0100866}
867
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200868/**
869 * efi_add_runtime_mmio() - add memory-mapped IO region
870 *
871 * This function adds a memory-mapped IO region to the memory map to make it
872 * available at runtime.
873 *
Heinrich Schuchardtfb34f292018-12-23 02:35:13 +0100874 * @mmio_ptr: pointer to a pointer to the start of the memory-mapped
875 * IO region
Heinrich Schuchardt250b3252018-09-03 19:29:41 +0200876 * @len: size of the memory-mapped IO region
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200877 * Returns: status code
878 */
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100879efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
Alexander Graf80a48002016-08-16 21:08:45 +0200880{
881 struct efi_runtime_mmio_list *newmmio;
Alexander Graf813468c2018-03-15 15:08:16 +0100882 uint64_t addr = *(uintptr_t *)mmio_ptr;
Bryan O'Donoghueb225c922019-07-15 12:00:39 +0100883 efi_status_t ret;
Alexander Graf813468c2018-03-15 15:08:16 +0100884
Michael Walle714497e2020-05-17 12:29:19 +0200885 ret = efi_add_memory_map(addr, len, EFI_MMAP_IO);
Bryan O'Donoghueb225c922019-07-15 12:00:39 +0100886 if (ret != EFI_SUCCESS)
Alexander Graf813468c2018-03-15 15:08:16 +0100887 return EFI_OUT_OF_RESOURCES;
Alexander Graf80a48002016-08-16 21:08:45 +0200888
889 newmmio = calloc(1, sizeof(*newmmio));
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100890 if (!newmmio)
891 return EFI_OUT_OF_RESOURCES;
Alexander Graf80a48002016-08-16 21:08:45 +0200892 newmmio->ptr = mmio_ptr;
893 newmmio->paddr = *(uintptr_t *)mmio_ptr;
894 newmmio->len = len;
895 list_add_tail(&newmmio->link, &efi_runtime_mmio);
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100896
Alexander Graf813468c2018-03-15 15:08:16 +0100897 return EFI_SUCCESS;
Alexander Graf80a48002016-08-16 21:08:45 +0200898}
899
Alexander Graf50149ea2016-03-04 01:10:01 +0100900/*
901 * In the second stage, U-Boot has disappeared. To isolate our runtime code
902 * that at this point still exists from the rest, we put it into a special
903 * section.
904 *
905 * !!WARNING!!
906 *
907 * This means that we can not rely on any code outside of this file in any
908 * function or variable below this line.
909 *
910 * Please keep everything fully self-contained and annotated with
Alexander Graf3c63db92016-10-14 13:45:30 +0200911 * __efi_runtime and __efi_runtime_data markers.
Alexander Graf50149ea2016-03-04 01:10:01 +0100912 */
913
914/*
915 * Relocate the EFI runtime stub to a different place. We need to call this
916 * the first time we expose the runtime interface to a user and on set virtual
917 * address map calls.
918 */
919
Heinrich Schuchardtbcfb0e22018-07-29 15:10:11 +0200920/**
921 * efi_unimplemented() - replacement function, returns EFI_UNSUPPORTED
922 *
923 * This function is used after SetVirtualAddressMap() is called as replacement
924 * for services that are not available anymore due to constraints of the U-Boot
925 * implementation.
926 *
927 * Return: EFI_UNSUPPORTED
928 */
Alexander Graf3c63db92016-10-14 13:45:30 +0200929static efi_status_t __efi_runtime EFIAPI efi_unimplemented(void)
Alexander Graf50149ea2016-03-04 01:10:01 +0100930{
931 return EFI_UNSUPPORTED;
932}
933
Alexander Graf3c63db92016-10-14 13:45:30 +0200934struct efi_runtime_services __efi_runtime_data efi_runtime_services = {
Alexander Graf50149ea2016-03-04 01:10:01 +0100935 .hdr = {
936 .signature = EFI_RUNTIME_SERVICES_SIGNATURE,
Heinrich Schuchardt112f2432018-06-28 12:45:27 +0200937 .revision = EFI_SPECIFICATION_VERSION,
Heinrich Schuchardt71c846a2018-06-28 12:45:29 +0200938 .headersize = sizeof(struct efi_runtime_services),
Alexander Graf50149ea2016-03-04 01:10:01 +0100939 },
Alexander Graf80a48002016-08-16 21:08:45 +0200940 .get_time = &efi_get_time_boottime,
Heinrich Schuchardt433bfe72019-05-19 20:07:39 +0200941 .set_time = &efi_set_time_boottime,
Alexander Graf50149ea2016-03-04 01:10:01 +0100942 .get_wakeup_time = (void *)&efi_unimplemented,
943 .set_wakeup_time = (void *)&efi_unimplemented,
944 .set_virtual_address_map = &efi_set_virtual_address_map,
Heinrich Schuchardt7be56e82019-07-27 20:35:24 +0200945 .convert_pointer = efi_convert_pointer,
Rob Clarkad644e72017-09-13 18:05:37 -0400946 .get_variable = efi_get_variable,
Heinrich Schuchardt45c66f92018-05-17 07:57:05 +0200947 .get_next_variable_name = efi_get_next_variable_name,
Rob Clarkad644e72017-09-13 18:05:37 -0400948 .set_variable = efi_set_variable,
Heinrich Schuchardtb94461c2019-06-20 15:40:49 +0200949 .get_next_high_mono_count = (void *)&efi_unimplemented,
Alexander Graf80a48002016-08-16 21:08:45 +0200950 .reset_system = &efi_reset_system_boottime,
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900951#ifdef CONFIG_EFI_RUNTIME_UPDATE_CAPSULE
Heinrich Schuchardt0c230742018-02-09 20:41:21 +0100952 .update_capsule = efi_update_capsule,
953 .query_capsule_caps = efi_query_capsule_caps,
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900954#else
955 .update_capsule = efi_update_capsule_unsupported,
956 .query_capsule_caps = efi_query_capsule_caps_unsupported,
957#endif
Heinrich Schuchardt0c230742018-02-09 20:41:21 +0100958 .query_variable_info = efi_query_variable_info,
Alexander Graf50149ea2016-03-04 01:10:01 +0100959};