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efi_loader: efi variable support
[people/ms/u-boot.git] / lib / efi_loader / efi_boottime.c
1 /*
2 * EFI application boot time services
3 *
4 * Copyright (c) 2016 Alexander Graf
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
9 #include <common.h>
10 #include <efi_loader.h>
11 #include <environment.h>
12 #include <malloc.h>
13 #include <asm/global_data.h>
14 #include <libfdt_env.h>
15 #include <u-boot/crc.h>
16 #include <bootm.h>
17 #include <inttypes.h>
18 #include <watchdog.h>
19
20 DECLARE_GLOBAL_DATA_PTR;
21
22 /* Task priority level */
23 static UINTN efi_tpl = TPL_APPLICATION;
24
25 /* This list contains all the EFI objects our payload has access to */
26 LIST_HEAD(efi_obj_list);
27
28 /*
29 * If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
30 * we need to do trickery with caches. Since we don't want to break the EFI
31 * aware boot path, only apply hacks when loading exiting directly (breaking
32 * direct Linux EFI booting along the way - oh well).
33 */
34 static bool efi_is_direct_boot = true;
35
36 /*
37 * EFI can pass arbitrary additional "tables" containing vendor specific
38 * information to the payload. One such table is the FDT table which contains
39 * a pointer to a flattened device tree blob.
40 *
41 * In most cases we want to pass an FDT to the payload, so reserve one slot of
42 * config table space for it. The pointer gets populated by do_bootefi_exec().
43 */
44 static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
45
46 #ifdef CONFIG_ARM
47 /*
48 * The "gd" pointer lives in a register on ARM and AArch64 that we declare
49 * fixed when compiling U-Boot. However, the payload does not know about that
50 * restriction so we need to manually swap its and our view of that register on
51 * EFI callback entry/exit.
52 */
53 static volatile void *efi_gd, *app_gd;
54 #endif
55
56 static int entry_count;
57 static int nesting_level;
58
59 /* Called on every callback entry */
60 int __efi_entry_check(void)
61 {
62 int ret = entry_count++ == 0;
63 #ifdef CONFIG_ARM
64 assert(efi_gd);
65 app_gd = gd;
66 gd = efi_gd;
67 #endif
68 return ret;
69 }
70
71 /* Called on every callback exit */
72 int __efi_exit_check(void)
73 {
74 int ret = --entry_count == 0;
75 #ifdef CONFIG_ARM
76 gd = app_gd;
77 #endif
78 return ret;
79 }
80
81 /* Called from do_bootefi_exec() */
82 void efi_save_gd(void)
83 {
84 #ifdef CONFIG_ARM
85 efi_gd = gd;
86 #endif
87 }
88
89 /*
90 * Special case handler for error/abort that just forces things back
91 * to u-boot world so we can dump out an abort msg, without any care
92 * about returning back to UEFI world.
93 */
94 void efi_restore_gd(void)
95 {
96 #ifdef CONFIG_ARM
97 /* Only restore if we're already in EFI context */
98 if (!efi_gd)
99 return;
100 gd = efi_gd;
101 #endif
102 }
103
104 /*
105 * Two spaces per indent level, maxing out at 10.. which ought to be
106 * enough for anyone ;-)
107 */
108 static const char *indent_string(int level)
109 {
110 const char *indent = " ";
111 const int max = strlen(indent);
112 level = min(max, level * 2);
113 return &indent[max - level];
114 }
115
116 const char *__efi_nesting(void)
117 {
118 return indent_string(nesting_level);
119 }
120
121 const char *__efi_nesting_inc(void)
122 {
123 return indent_string(nesting_level++);
124 }
125
126 const char *__efi_nesting_dec(void)
127 {
128 return indent_string(--nesting_level);
129 }
130
131 /* Low 32 bit */
132 #define EFI_LOW32(a) (a & 0xFFFFFFFFULL)
133 /* High 32 bit */
134 #define EFI_HIGH32(a) (a >> 32)
135
136 /*
137 * 64bit division by 10 implemented as multiplication by 1 / 10
138 *
139 * Decimals of one tenth: 0x1 / 0xA = 0x0.19999...
140 */
141 #define EFI_TENTH 0x199999999999999A
142 static u64 efi_div10(u64 a)
143 {
144 u64 prod;
145 u64 rem;
146 u64 ret;
147
148 ret = EFI_HIGH32(a) * EFI_HIGH32(EFI_TENTH);
149 prod = EFI_HIGH32(a) * EFI_LOW32(EFI_TENTH);
150 rem = EFI_LOW32(prod);
151 ret += EFI_HIGH32(prod);
152 prod = EFI_LOW32(a) * EFI_HIGH32(EFI_TENTH);
153 rem += EFI_LOW32(prod);
154 ret += EFI_HIGH32(prod);
155 prod = EFI_LOW32(a) * EFI_LOW32(EFI_TENTH);
156 rem += EFI_HIGH32(prod);
157 ret += EFI_HIGH32(rem);
158 /* Round to nearest integer */
159 if (rem >= (1 << 31))
160 ++ret;
161 return ret;
162 }
163
164 void efi_signal_event(struct efi_event *event)
165 {
166 if (event->notify_function) {
167 event->queued = 1;
168 /* Check TPL */
169 if (efi_tpl >= event->notify_tpl)
170 return;
171 EFI_CALL_VOID(event->notify_function(event,
172 event->notify_context));
173 }
174 event->queued = 0;
175 }
176
177 static efi_status_t efi_unsupported(const char *funcname)
178 {
179 debug("EFI: App called into unimplemented function %s\n", funcname);
180 return EFI_EXIT(EFI_UNSUPPORTED);
181 }
182
183 static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl)
184 {
185 UINTN old_tpl = efi_tpl;
186
187 EFI_ENTRY("0x%zx", new_tpl);
188
189 if (new_tpl < efi_tpl)
190 debug("WARNING: new_tpl < current_tpl in %s\n", __func__);
191 efi_tpl = new_tpl;
192 if (efi_tpl > TPL_HIGH_LEVEL)
193 efi_tpl = TPL_HIGH_LEVEL;
194
195 EFI_EXIT(EFI_SUCCESS);
196 return old_tpl;
197 }
198
199 static void EFIAPI efi_restore_tpl(UINTN old_tpl)
200 {
201 EFI_ENTRY("0x%zx", old_tpl);
202
203 if (old_tpl > efi_tpl)
204 debug("WARNING: old_tpl > current_tpl in %s\n", __func__);
205 efi_tpl = old_tpl;
206 if (efi_tpl > TPL_HIGH_LEVEL)
207 efi_tpl = TPL_HIGH_LEVEL;
208
209 EFI_EXIT(EFI_SUCCESS);
210 }
211
212 static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
213 unsigned long pages,
214 uint64_t *memory)
215 {
216 efi_status_t r;
217
218 EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory);
219 r = efi_allocate_pages(type, memory_type, pages, memory);
220 return EFI_EXIT(r);
221 }
222
223 static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
224 unsigned long pages)
225 {
226 efi_status_t r;
227
228 EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages);
229 r = efi_free_pages(memory, pages);
230 return EFI_EXIT(r);
231 }
232
233 static efi_status_t EFIAPI efi_get_memory_map_ext(
234 unsigned long *memory_map_size,
235 struct efi_mem_desc *memory_map,
236 unsigned long *map_key,
237 unsigned long *descriptor_size,
238 uint32_t *descriptor_version)
239 {
240 efi_status_t r;
241
242 EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map,
243 map_key, descriptor_size, descriptor_version);
244 r = efi_get_memory_map(memory_map_size, memory_map, map_key,
245 descriptor_size, descriptor_version);
246 return EFI_EXIT(r);
247 }
248
249 static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
250 unsigned long size,
251 void **buffer)
252 {
253 efi_status_t r;
254
255 EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer);
256 r = efi_allocate_pool(pool_type, size, buffer);
257 return EFI_EXIT(r);
258 }
259
260 static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
261 {
262 efi_status_t r;
263
264 EFI_ENTRY("%p", buffer);
265 r = efi_free_pool(buffer);
266 return EFI_EXIT(r);
267 }
268
269 /*
270 * Our event capabilities are very limited. Only a small limited
271 * number of events is allowed to coexist.
272 */
273 static struct efi_event efi_events[16];
274
275 efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl,
276 void (EFIAPI *notify_function) (
277 struct efi_event *event,
278 void *context),
279 void *notify_context, struct efi_event **event)
280 {
281 int i;
282
283 if (event == NULL)
284 return EFI_INVALID_PARAMETER;
285
286 if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
287 return EFI_INVALID_PARAMETER;
288
289 if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
290 notify_function == NULL)
291 return EFI_INVALID_PARAMETER;
292
293 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
294 if (efi_events[i].type)
295 continue;
296 efi_events[i].type = type;
297 efi_events[i].notify_tpl = notify_tpl;
298 efi_events[i].notify_function = notify_function;
299 efi_events[i].notify_context = notify_context;
300 /* Disable timers on bootup */
301 efi_events[i].trigger_next = -1ULL;
302 efi_events[i].queued = 0;
303 efi_events[i].signaled = 0;
304 *event = &efi_events[i];
305 return EFI_SUCCESS;
306 }
307 return EFI_OUT_OF_RESOURCES;
308 }
309
310 static efi_status_t EFIAPI efi_create_event_ext(
311 uint32_t type, UINTN notify_tpl,
312 void (EFIAPI *notify_function) (
313 struct efi_event *event,
314 void *context),
315 void *notify_context, struct efi_event **event)
316 {
317 EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function,
318 notify_context);
319 return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function,
320 notify_context, event));
321 }
322
323
324 /*
325 * Our timers have to work without interrupts, so we check whenever keyboard
326 * input or disk accesses happen if enough time elapsed for it to fire.
327 */
328 void efi_timer_check(void)
329 {
330 int i;
331 u64 now = timer_get_us();
332
333 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
334 if (!efi_events[i].type)
335 continue;
336 if (efi_events[i].queued)
337 efi_signal_event(&efi_events[i]);
338 if (!(efi_events[i].type & EVT_TIMER) ||
339 now < efi_events[i].trigger_next)
340 continue;
341 switch (efi_events[i].trigger_type) {
342 case EFI_TIMER_RELATIVE:
343 efi_events[i].trigger_type = EFI_TIMER_STOP;
344 break;
345 case EFI_TIMER_PERIODIC:
346 efi_events[i].trigger_next +=
347 efi_events[i].trigger_time;
348 break;
349 default:
350 continue;
351 }
352 efi_events[i].signaled = 1;
353 efi_signal_event(&efi_events[i]);
354 }
355 WATCHDOG_RESET();
356 }
357
358 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
359 uint64_t trigger_time)
360 {
361 int i;
362
363 /*
364 * The parameter defines a multiple of 100ns.
365 * We use multiples of 1000ns. So divide by 10.
366 */
367 trigger_time = efi_div10(trigger_time);
368
369 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
370 if (event != &efi_events[i])
371 continue;
372
373 if (!(event->type & EVT_TIMER))
374 break;
375 switch (type) {
376 case EFI_TIMER_STOP:
377 event->trigger_next = -1ULL;
378 break;
379 case EFI_TIMER_PERIODIC:
380 case EFI_TIMER_RELATIVE:
381 event->trigger_next =
382 timer_get_us() + trigger_time;
383 break;
384 default:
385 return EFI_INVALID_PARAMETER;
386 }
387 event->trigger_type = type;
388 event->trigger_time = trigger_time;
389 event->signaled = 0;
390 return EFI_SUCCESS;
391 }
392 return EFI_INVALID_PARAMETER;
393 }
394
395 static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event,
396 enum efi_timer_delay type,
397 uint64_t trigger_time)
398 {
399 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
400 return EFI_EXIT(efi_set_timer(event, type, trigger_time));
401 }
402
403 static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
404 struct efi_event **event,
405 unsigned long *index)
406 {
407 int i, j;
408
409 EFI_ENTRY("%ld, %p, %p", num_events, event, index);
410
411 /* Check parameters */
412 if (!num_events || !event)
413 return EFI_EXIT(EFI_INVALID_PARAMETER);
414 /* Check TPL */
415 if (efi_tpl != TPL_APPLICATION)
416 return EFI_EXIT(EFI_UNSUPPORTED);
417 for (i = 0; i < num_events; ++i) {
418 for (j = 0; j < ARRAY_SIZE(efi_events); ++j) {
419 if (event[i] == &efi_events[j])
420 goto known_event;
421 }
422 return EFI_EXIT(EFI_INVALID_PARAMETER);
423 known_event:
424 if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL)
425 return EFI_EXIT(EFI_INVALID_PARAMETER);
426 if (!event[i]->signaled)
427 efi_signal_event(event[i]);
428 }
429
430 /* Wait for signal */
431 for (;;) {
432 for (i = 0; i < num_events; ++i) {
433 if (event[i]->signaled)
434 goto out;
435 }
436 /* Allow events to occur. */
437 efi_timer_check();
438 }
439
440 out:
441 /*
442 * Reset the signal which is passed to the caller to allow periodic
443 * events to occur.
444 */
445 event[i]->signaled = 0;
446 if (index)
447 *index = i;
448
449 return EFI_EXIT(EFI_SUCCESS);
450 }
451
452 static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event)
453 {
454 int i;
455
456 EFI_ENTRY("%p", event);
457 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
458 if (event != &efi_events[i])
459 continue;
460 if (event->signaled)
461 break;
462 event->signaled = 1;
463 if (event->type & EVT_NOTIFY_SIGNAL)
464 efi_signal_event(event);
465 break;
466 }
467 return EFI_EXIT(EFI_SUCCESS);
468 }
469
470 static efi_status_t EFIAPI efi_close_event(struct efi_event *event)
471 {
472 int i;
473
474 EFI_ENTRY("%p", event);
475 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
476 if (event == &efi_events[i]) {
477 event->type = 0;
478 event->trigger_next = -1ULL;
479 event->queued = 0;
480 event->signaled = 0;
481 return EFI_EXIT(EFI_SUCCESS);
482 }
483 }
484 return EFI_EXIT(EFI_INVALID_PARAMETER);
485 }
486
487 static efi_status_t EFIAPI efi_check_event(struct efi_event *event)
488 {
489 int i;
490
491 EFI_ENTRY("%p", event);
492 efi_timer_check();
493 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
494 if (event != &efi_events[i])
495 continue;
496 if (!event->type || event->type & EVT_NOTIFY_SIGNAL)
497 break;
498 if (!event->signaled)
499 efi_signal_event(event);
500 if (event->signaled)
501 return EFI_EXIT(EFI_SUCCESS);
502 return EFI_EXIT(EFI_NOT_READY);
503 }
504 return EFI_EXIT(EFI_INVALID_PARAMETER);
505 }
506
507 static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
508 efi_guid_t *protocol, int protocol_interface_type,
509 void *protocol_interface)
510 {
511 struct list_head *lhandle;
512 int i;
513 efi_status_t r;
514
515 if (!handle || !protocol ||
516 protocol_interface_type != EFI_NATIVE_INTERFACE) {
517 r = EFI_INVALID_PARAMETER;
518 goto out;
519 }
520
521 /* Create new handle if requested. */
522 if (!*handle) {
523 r = EFI_OUT_OF_RESOURCES;
524 goto out;
525 }
526 /* Find object. */
527 list_for_each(lhandle, &efi_obj_list) {
528 struct efi_object *efiobj;
529 efiobj = list_entry(lhandle, struct efi_object, link);
530
531 if (efiobj->handle != *handle)
532 continue;
533 /* Check if protocol is already installed on the handle. */
534 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
535 struct efi_handler *handler = &efiobj->protocols[i];
536
537 if (!handler->guid)
538 continue;
539 if (!guidcmp(handler->guid, protocol)) {
540 r = EFI_INVALID_PARAMETER;
541 goto out;
542 }
543 }
544 /* Install protocol in first empty slot. */
545 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
546 struct efi_handler *handler = &efiobj->protocols[i];
547
548 if (handler->guid)
549 continue;
550
551 handler->guid = protocol;
552 handler->protocol_interface = protocol_interface;
553 r = EFI_SUCCESS;
554 goto out;
555 }
556 r = EFI_OUT_OF_RESOURCES;
557 goto out;
558 }
559 r = EFI_INVALID_PARAMETER;
560 out:
561 return r;
562 }
563
564 static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle,
565 efi_guid_t *protocol, int protocol_interface_type,
566 void *protocol_interface)
567 {
568 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type,
569 protocol_interface);
570
571 return EFI_EXIT(efi_install_protocol_interface(handle, protocol,
572 protocol_interface_type,
573 protocol_interface));
574 }
575
576 static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
577 efi_guid_t *protocol, void *old_interface,
578 void *new_interface)
579 {
580 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface,
581 new_interface);
582 return EFI_EXIT(EFI_ACCESS_DENIED);
583 }
584
585 static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
586 efi_guid_t *protocol, void *protocol_interface)
587 {
588 struct list_head *lhandle;
589 int i;
590 efi_status_t r = EFI_NOT_FOUND;
591
592 if (!handle || !protocol) {
593 r = EFI_INVALID_PARAMETER;
594 goto out;
595 }
596
597 list_for_each(lhandle, &efi_obj_list) {
598 struct efi_object *efiobj;
599 efiobj = list_entry(lhandle, struct efi_object, link);
600
601 if (efiobj->handle != handle)
602 continue;
603
604 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
605 struct efi_handler *handler = &efiobj->protocols[i];
606 const efi_guid_t *hprotocol = handler->guid;
607
608 if (!hprotocol)
609 continue;
610 if (!guidcmp(hprotocol, protocol)) {
611 if (handler->protocol_interface) {
612 r = EFI_ACCESS_DENIED;
613 } else {
614 handler->guid = 0;
615 r = EFI_SUCCESS;
616 }
617 goto out;
618 }
619 }
620 }
621
622 out:
623 return r;
624 }
625
626 static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle,
627 efi_guid_t *protocol, void *protocol_interface)
628 {
629 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface);
630
631 return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol,
632 protocol_interface));
633 }
634
635 static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol,
636 struct efi_event *event,
637 void **registration)
638 {
639 EFI_ENTRY("%p, %p, %p", protocol, event, registration);
640 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
641 }
642
643 static int efi_search(enum efi_locate_search_type search_type,
644 efi_guid_t *protocol, void *search_key,
645 struct efi_object *efiobj)
646 {
647 int i;
648
649 switch (search_type) {
650 case all_handles:
651 return 0;
652 case by_register_notify:
653 return -1;
654 case by_protocol:
655 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
656 const efi_guid_t *guid = efiobj->protocols[i].guid;
657 if (guid && !guidcmp(guid, protocol))
658 return 0;
659 }
660 return -1;
661 }
662
663 return -1;
664 }
665
666 static efi_status_t efi_locate_handle(
667 enum efi_locate_search_type search_type,
668 efi_guid_t *protocol, void *search_key,
669 unsigned long *buffer_size, efi_handle_t *buffer)
670 {
671 struct list_head *lhandle;
672 unsigned long size = 0;
673
674 /* Count how much space we need */
675 list_for_each(lhandle, &efi_obj_list) {
676 struct efi_object *efiobj;
677 efiobj = list_entry(lhandle, struct efi_object, link);
678 if (!efi_search(search_type, protocol, search_key, efiobj)) {
679 size += sizeof(void*);
680 }
681 }
682
683 if (*buffer_size < size) {
684 *buffer_size = size;
685 return EFI_BUFFER_TOO_SMALL;
686 }
687
688 *buffer_size = size;
689 if (size == 0)
690 return EFI_NOT_FOUND;
691
692 /* Then fill the array */
693 list_for_each(lhandle, &efi_obj_list) {
694 struct efi_object *efiobj;
695 efiobj = list_entry(lhandle, struct efi_object, link);
696 if (!efi_search(search_type, protocol, search_key, efiobj)) {
697 *(buffer++) = efiobj->handle;
698 }
699 }
700
701 return EFI_SUCCESS;
702 }
703
704 static efi_status_t EFIAPI efi_locate_handle_ext(
705 enum efi_locate_search_type search_type,
706 efi_guid_t *protocol, void *search_key,
707 unsigned long *buffer_size, efi_handle_t *buffer)
708 {
709 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
710 buffer_size, buffer);
711
712 return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key,
713 buffer_size, buffer));
714 }
715
716 static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
717 struct efi_device_path **device_path,
718 efi_handle_t *device)
719 {
720 struct efi_object *efiobj;
721
722 EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device);
723
724 efiobj = efi_dp_find_obj(*device_path, device_path);
725 if (!efiobj)
726 return EFI_EXIT(EFI_NOT_FOUND);
727
728 *device = efiobj->handle;
729
730 return EFI_EXIT(EFI_SUCCESS);
731 }
732
733 /* Collapses configuration table entries, removing index i */
734 static void efi_remove_configuration_table(int i)
735 {
736 struct efi_configuration_table *this = &efi_conf_table[i];
737 struct efi_configuration_table *next = &efi_conf_table[i+1];
738 struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables];
739
740 memmove(this, next, (ulong)end - (ulong)next);
741 systab.nr_tables--;
742 }
743
744 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
745 {
746 int i;
747
748 /* Check for guid override */
749 for (i = 0; i < systab.nr_tables; i++) {
750 if (!guidcmp(guid, &efi_conf_table[i].guid)) {
751 if (table)
752 efi_conf_table[i].table = table;
753 else
754 efi_remove_configuration_table(i);
755 return EFI_SUCCESS;
756 }
757 }
758
759 if (!table)
760 return EFI_NOT_FOUND;
761
762 /* No override, check for overflow */
763 if (i >= ARRAY_SIZE(efi_conf_table))
764 return EFI_OUT_OF_RESOURCES;
765
766 /* Add a new entry */
767 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid));
768 efi_conf_table[i].table = table;
769 systab.nr_tables = i + 1;
770
771 return EFI_SUCCESS;
772 }
773
774 static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
775 void *table)
776 {
777 EFI_ENTRY("%p, %p", guid, table);
778 return EFI_EXIT(efi_install_configuration_table(guid, table));
779 }
780
781 /* Initialize a loaded_image_info + loaded_image_info object with correct
782 * protocols, boot-device, etc.
783 */
784 void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *obj,
785 struct efi_device_path *device_path,
786 struct efi_device_path *file_path)
787 {
788 obj->handle = info;
789
790 /*
791 * When asking for the device path interface, return
792 * bootefi_device_path
793 */
794 obj->protocols[0].guid = &efi_guid_device_path;
795 obj->protocols[0].protocol_interface = device_path;
796
797 /*
798 * When asking for the loaded_image interface, just
799 * return handle which points to loaded_image_info
800 */
801 obj->protocols[1].guid = &efi_guid_loaded_image;
802 obj->protocols[1].protocol_interface = info;
803
804 obj->protocols[2].guid = &efi_guid_console_control;
805 obj->protocols[2].protocol_interface = (void *)&efi_console_control;
806
807 obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol;
808 obj->protocols[3].protocol_interface =
809 (void *)&efi_device_path_to_text;
810
811 info->file_path = file_path;
812 info->device_handle = efi_dp_find_obj(device_path, NULL);
813
814 list_add_tail(&obj->link, &efi_obj_list);
815 }
816
817 static efi_status_t load_image_from_path(struct efi_device_path *file_path,
818 void **buffer)
819 {
820 struct efi_file_info *info = NULL;
821 struct efi_file_handle *f;
822 static efi_status_t ret;
823 uint64_t bs;
824
825 f = efi_file_from_path(file_path);
826 if (!f)
827 return EFI_DEVICE_ERROR;
828
829 bs = 0;
830 EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
831 &bs, info));
832 if (ret == EFI_BUFFER_TOO_SMALL) {
833 info = malloc(bs);
834 EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid,
835 &bs, info));
836 }
837 if (ret != EFI_SUCCESS)
838 goto error;
839
840 ret = efi_allocate_pool(EFI_LOADER_DATA, info->file_size, buffer);
841 if (ret)
842 goto error;
843
844 EFI_CALL(ret = f->read(f, &info->file_size, *buffer));
845
846 error:
847 free(info);
848 EFI_CALL(f->close(f));
849
850 if (ret != EFI_SUCCESS) {
851 efi_free_pool(*buffer);
852 *buffer = NULL;
853 }
854
855 return ret;
856 }
857
858 static efi_status_t EFIAPI efi_load_image(bool boot_policy,
859 efi_handle_t parent_image,
860 struct efi_device_path *file_path,
861 void *source_buffer,
862 unsigned long source_size,
863 efi_handle_t *image_handle)
864 {
865 struct efi_loaded_image *info;
866 struct efi_object *obj;
867
868 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
869 file_path, source_buffer, source_size, image_handle);
870
871 info = calloc(1, sizeof(*info));
872 obj = calloc(1, sizeof(*obj));
873
874 if (!source_buffer) {
875 struct efi_device_path *dp, *fp;
876 efi_status_t ret;
877
878 ret = load_image_from_path(file_path, &source_buffer);
879 if (ret != EFI_SUCCESS) {
880 free(info);
881 free(obj);
882 return EFI_EXIT(ret);
883 }
884
885 /*
886 * split file_path which contains both the device and
887 * file parts:
888 */
889 efi_dp_split_file_path(file_path, &dp, &fp);
890
891 efi_setup_loaded_image(info, obj, dp, fp);
892 } else {
893 /* In this case, file_path is the "device" path, ie.
894 * something like a HARDWARE_DEVICE:MEMORY_MAPPED
895 */
896 efi_setup_loaded_image(info, obj, file_path, NULL);
897 }
898
899 info->reserved = efi_load_pe(source_buffer, info);
900 if (!info->reserved) {
901 free(info);
902 free(obj);
903 return EFI_EXIT(EFI_UNSUPPORTED);
904 }
905
906 *image_handle = info;
907
908 return EFI_EXIT(EFI_SUCCESS);
909 }
910
911 static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
912 unsigned long *exit_data_size,
913 s16 **exit_data)
914 {
915 ulong (*entry)(void *image_handle, struct efi_system_table *st);
916 struct efi_loaded_image *info = image_handle;
917
918 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
919 entry = info->reserved;
920
921 efi_is_direct_boot = false;
922
923 /* call the image! */
924 if (setjmp(&info->exit_jmp)) {
925 /* We returned from the child image */
926 return EFI_EXIT(info->exit_status);
927 }
928
929 __efi_nesting_dec();
930 __efi_exit_check();
931 entry(image_handle, &systab);
932 __efi_entry_check();
933 __efi_nesting_inc();
934
935 /* Should usually never get here */
936 return EFI_EXIT(EFI_SUCCESS);
937 }
938
939 static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
940 efi_status_t exit_status, unsigned long exit_data_size,
941 int16_t *exit_data)
942 {
943 struct efi_loaded_image *loaded_image_info = (void*)image_handle;
944
945 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status,
946 exit_data_size, exit_data);
947
948 /* Make sure entry/exit counts for EFI world cross-overs match */
949 __efi_exit_check();
950
951 /*
952 * But longjmp out with the U-Boot gd, not the application's, as
953 * the other end is a setjmp call inside EFI context.
954 */
955 efi_restore_gd();
956
957 loaded_image_info->exit_status = exit_status;
958 longjmp(&loaded_image_info->exit_jmp, 1);
959
960 panic("EFI application exited");
961 }
962
963 static struct efi_object *efi_search_obj(void *handle)
964 {
965 struct list_head *lhandle;
966
967 list_for_each(lhandle, &efi_obj_list) {
968 struct efi_object *efiobj;
969 efiobj = list_entry(lhandle, struct efi_object, link);
970 if (efiobj->handle == handle)
971 return efiobj;
972 }
973
974 return NULL;
975 }
976
977 static efi_status_t EFIAPI efi_unload_image(void *image_handle)
978 {
979 struct efi_object *efiobj;
980
981 EFI_ENTRY("%p", image_handle);
982 efiobj = efi_search_obj(image_handle);
983 if (efiobj)
984 list_del(&efiobj->link);
985
986 return EFI_EXIT(EFI_SUCCESS);
987 }
988
989 static void efi_exit_caches(void)
990 {
991 #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
992 /*
993 * Grub on 32bit ARM needs to have caches disabled before jumping into
994 * a zImage, but does not know of all cache layers. Give it a hand.
995 */
996 if (efi_is_direct_boot)
997 cleanup_before_linux();
998 #endif
999 }
1000
1001 static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
1002 unsigned long map_key)
1003 {
1004 int i;
1005
1006 EFI_ENTRY("%p, %ld", image_handle, map_key);
1007
1008 /* Notify that ExitBootServices is invoked. */
1009 for (i = 0; i < ARRAY_SIZE(efi_events); ++i) {
1010 if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES)
1011 continue;
1012 efi_signal_event(&efi_events[i]);
1013 }
1014 /* Make sure that notification functions are not called anymore */
1015 efi_tpl = TPL_HIGH_LEVEL;
1016
1017 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1018 /* save any EFI variables that have been written: */
1019 env_save();
1020 #endif
1021
1022 board_quiesce_devices();
1023
1024 /* Fix up caches for EFI payloads if necessary */
1025 efi_exit_caches();
1026
1027 /* This stops all lingering devices */
1028 bootm_disable_interrupts();
1029
1030 /* Give the payload some time to boot */
1031 WATCHDOG_RESET();
1032
1033 return EFI_EXIT(EFI_SUCCESS);
1034 }
1035
1036 static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
1037 {
1038 static uint64_t mono = 0;
1039 EFI_ENTRY("%p", count);
1040 *count = mono++;
1041 return EFI_EXIT(EFI_SUCCESS);
1042 }
1043
1044 static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
1045 {
1046 EFI_ENTRY("%ld", microseconds);
1047 udelay(microseconds);
1048 return EFI_EXIT(EFI_SUCCESS);
1049 }
1050
1051 static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
1052 uint64_t watchdog_code,
1053 unsigned long data_size,
1054 uint16_t *watchdog_data)
1055 {
1056 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
1057 data_size, watchdog_data);
1058 return efi_unsupported(__func__);
1059 }
1060
1061 static efi_status_t EFIAPI efi_connect_controller(
1062 efi_handle_t controller_handle,
1063 efi_handle_t *driver_image_handle,
1064 struct efi_device_path *remain_device_path,
1065 bool recursive)
1066 {
1067 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
1068 remain_device_path, recursive);
1069 return EFI_EXIT(EFI_NOT_FOUND);
1070 }
1071
1072 static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle,
1073 void *driver_image_handle,
1074 void *child_handle)
1075 {
1076 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
1077 child_handle);
1078 return EFI_EXIT(EFI_INVALID_PARAMETER);
1079 }
1080
1081 static efi_status_t EFIAPI efi_close_protocol(void *handle,
1082 efi_guid_t *protocol,
1083 void *agent_handle,
1084 void *controller_handle)
1085 {
1086 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle,
1087 controller_handle);
1088 return EFI_EXIT(EFI_NOT_FOUND);
1089 }
1090
1091 static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
1092 efi_guid_t *protocol,
1093 struct efi_open_protocol_info_entry **entry_buffer,
1094 unsigned long *entry_count)
1095 {
1096 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer,
1097 entry_count);
1098 return EFI_EXIT(EFI_NOT_FOUND);
1099 }
1100
1101 static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
1102 efi_guid_t ***protocol_buffer,
1103 unsigned long *protocol_buffer_count)
1104 {
1105 unsigned long buffer_size;
1106 struct efi_object *efiobj;
1107 unsigned long i, j;
1108 struct list_head *lhandle;
1109 efi_status_t r;
1110
1111 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
1112 protocol_buffer_count);
1113
1114 if (!handle || !protocol_buffer || !protocol_buffer_count)
1115 return EFI_EXIT(EFI_INVALID_PARAMETER);
1116
1117 *protocol_buffer = NULL;
1118 *protocol_buffer_count = 0;
1119 list_for_each(lhandle, &efi_obj_list) {
1120 efiobj = list_entry(lhandle, struct efi_object, link);
1121
1122 if (efiobj->handle != handle)
1123 continue;
1124
1125 /* Count protocols */
1126 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
1127 if (efiobj->protocols[i].guid)
1128 ++*protocol_buffer_count;
1129 }
1130 /* Copy guids */
1131 if (*protocol_buffer_count) {
1132 buffer_size = sizeof(efi_guid_t *) *
1133 *protocol_buffer_count;
1134 r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES,
1135 buffer_size,
1136 (void **)protocol_buffer);
1137 if (r != EFI_SUCCESS)
1138 return EFI_EXIT(r);
1139 j = 0;
1140 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) {
1141 if (efiobj->protocols[i].guid) {
1142 (*protocol_buffer)[j] = (void *)
1143 efiobj->protocols[i].guid;
1144 ++j;
1145 }
1146 }
1147 }
1148 break;
1149 }
1150
1151 return EFI_EXIT(EFI_SUCCESS);
1152 }
1153
1154 static efi_status_t EFIAPI efi_locate_handle_buffer(
1155 enum efi_locate_search_type search_type,
1156 efi_guid_t *protocol, void *search_key,
1157 unsigned long *no_handles, efi_handle_t **buffer)
1158 {
1159 efi_status_t r;
1160 unsigned long buffer_size = 0;
1161
1162 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
1163 no_handles, buffer);
1164
1165 if (!no_handles || !buffer) {
1166 r = EFI_INVALID_PARAMETER;
1167 goto out;
1168 }
1169 *no_handles = 0;
1170 *buffer = NULL;
1171 r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
1172 *buffer);
1173 if (r != EFI_BUFFER_TOO_SMALL)
1174 goto out;
1175 r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
1176 (void **)buffer);
1177 if (r != EFI_SUCCESS)
1178 goto out;
1179 r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
1180 *buffer);
1181 if (r == EFI_SUCCESS)
1182 *no_handles = buffer_size / sizeof(void *);
1183 out:
1184 return EFI_EXIT(r);
1185 }
1186
1187 static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
1188 void *registration,
1189 void **protocol_interface)
1190 {
1191 struct list_head *lhandle;
1192 int i;
1193
1194 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
1195
1196 if (!protocol || !protocol_interface)
1197 return EFI_EXIT(EFI_INVALID_PARAMETER);
1198
1199 EFI_PRINT_GUID("protocol", protocol);
1200
1201 list_for_each(lhandle, &efi_obj_list) {
1202 struct efi_object *efiobj;
1203
1204 efiobj = list_entry(lhandle, struct efi_object, link);
1205 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
1206 struct efi_handler *handler = &efiobj->protocols[i];
1207
1208 if (!handler->guid)
1209 continue;
1210 if (!guidcmp(handler->guid, protocol)) {
1211 *protocol_interface =
1212 handler->protocol_interface;
1213 return EFI_EXIT(EFI_SUCCESS);
1214 }
1215 }
1216 }
1217 *protocol_interface = NULL;
1218
1219 return EFI_EXIT(EFI_NOT_FOUND);
1220 }
1221
1222 static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
1223 void **handle, ...)
1224 {
1225 EFI_ENTRY("%p", handle);
1226
1227 va_list argptr;
1228 efi_guid_t *protocol;
1229 void *protocol_interface;
1230 efi_status_t r = EFI_SUCCESS;
1231 int i = 0;
1232
1233 if (!handle)
1234 return EFI_EXIT(EFI_INVALID_PARAMETER);
1235
1236 va_start(argptr, handle);
1237 for (;;) {
1238 protocol = va_arg(argptr, efi_guid_t*);
1239 if (!protocol)
1240 break;
1241 protocol_interface = va_arg(argptr, void*);
1242 r = efi_install_protocol_interface(handle, protocol,
1243 EFI_NATIVE_INTERFACE,
1244 protocol_interface);
1245 if (r != EFI_SUCCESS)
1246 break;
1247 i++;
1248 }
1249 va_end(argptr);
1250 if (r == EFI_SUCCESS)
1251 return EFI_EXIT(r);
1252
1253 /* If an error occured undo all changes. */
1254 va_start(argptr, handle);
1255 for (; i; --i) {
1256 protocol = va_arg(argptr, efi_guid_t*);
1257 protocol_interface = va_arg(argptr, void*);
1258 efi_uninstall_protocol_interface(handle, protocol,
1259 protocol_interface);
1260 }
1261 va_end(argptr);
1262
1263 return EFI_EXIT(r);
1264 }
1265
1266 static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
1267 void *handle, ...)
1268 {
1269 EFI_ENTRY("%p", handle);
1270 return EFI_EXIT(EFI_INVALID_PARAMETER);
1271 }
1272
1273 static efi_status_t EFIAPI efi_calculate_crc32(void *data,
1274 unsigned long data_size,
1275 uint32_t *crc32_p)
1276 {
1277 EFI_ENTRY("%p, %ld", data, data_size);
1278 *crc32_p = crc32(0, data, data_size);
1279 return EFI_EXIT(EFI_SUCCESS);
1280 }
1281
1282 static void EFIAPI efi_copy_mem(void *destination, void *source,
1283 unsigned long length)
1284 {
1285 EFI_ENTRY("%p, %p, %ld", destination, source, length);
1286 memcpy(destination, source, length);
1287 }
1288
1289 static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value)
1290 {
1291 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value);
1292 memset(buffer, value, size);
1293 }
1294
1295 static efi_status_t EFIAPI efi_open_protocol(
1296 void *handle, efi_guid_t *protocol,
1297 void **protocol_interface, void *agent_handle,
1298 void *controller_handle, uint32_t attributes)
1299 {
1300 struct list_head *lhandle;
1301 int i;
1302 efi_status_t r = EFI_INVALID_PARAMETER;
1303
1304 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol,
1305 protocol_interface, agent_handle, controller_handle,
1306 attributes);
1307
1308 if (!handle || !protocol ||
1309 (!protocol_interface && attributes !=
1310 EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) {
1311 goto out;
1312 }
1313
1314 EFI_PRINT_GUID("protocol", protocol);
1315
1316 switch (attributes) {
1317 case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
1318 case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
1319 case EFI_OPEN_PROTOCOL_TEST_PROTOCOL:
1320 break;
1321 case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
1322 if (controller_handle == handle)
1323 goto out;
1324 case EFI_OPEN_PROTOCOL_BY_DRIVER:
1325 case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
1326 if (controller_handle == NULL)
1327 goto out;
1328 case EFI_OPEN_PROTOCOL_EXCLUSIVE:
1329 if (agent_handle == NULL)
1330 goto out;
1331 break;
1332 default:
1333 goto out;
1334 }
1335
1336 list_for_each(lhandle, &efi_obj_list) {
1337 struct efi_object *efiobj;
1338 efiobj = list_entry(lhandle, struct efi_object, link);
1339
1340 if (efiobj->handle != handle)
1341 continue;
1342
1343 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
1344 struct efi_handler *handler = &efiobj->protocols[i];
1345 const efi_guid_t *hprotocol = handler->guid;
1346 if (!hprotocol)
1347 continue;
1348 if (!guidcmp(hprotocol, protocol)) {
1349 if (attributes !=
1350 EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
1351 *protocol_interface =
1352 handler->protocol_interface;
1353 }
1354 r = EFI_SUCCESS;
1355 goto out;
1356 }
1357 }
1358 goto unsupported;
1359 }
1360
1361 unsupported:
1362 r = EFI_UNSUPPORTED;
1363 out:
1364 return EFI_EXIT(r);
1365 }
1366
1367 static efi_status_t EFIAPI efi_handle_protocol(void *handle,
1368 efi_guid_t *protocol,
1369 void **protocol_interface)
1370 {
1371 return efi_open_protocol(handle, protocol, protocol_interface, NULL,
1372 NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
1373 }
1374
1375 static const struct efi_boot_services efi_boot_services = {
1376 .hdr = {
1377 .headersize = sizeof(struct efi_table_hdr),
1378 },
1379 .raise_tpl = efi_raise_tpl,
1380 .restore_tpl = efi_restore_tpl,
1381 .allocate_pages = efi_allocate_pages_ext,
1382 .free_pages = efi_free_pages_ext,
1383 .get_memory_map = efi_get_memory_map_ext,
1384 .allocate_pool = efi_allocate_pool_ext,
1385 .free_pool = efi_free_pool_ext,
1386 .create_event = efi_create_event_ext,
1387 .set_timer = efi_set_timer_ext,
1388 .wait_for_event = efi_wait_for_event,
1389 .signal_event = efi_signal_event_ext,
1390 .close_event = efi_close_event,
1391 .check_event = efi_check_event,
1392 .install_protocol_interface = efi_install_protocol_interface_ext,
1393 .reinstall_protocol_interface = efi_reinstall_protocol_interface,
1394 .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext,
1395 .handle_protocol = efi_handle_protocol,
1396 .reserved = NULL,
1397 .register_protocol_notify = efi_register_protocol_notify,
1398 .locate_handle = efi_locate_handle_ext,
1399 .locate_device_path = efi_locate_device_path,
1400 .install_configuration_table = efi_install_configuration_table_ext,
1401 .load_image = efi_load_image,
1402 .start_image = efi_start_image,
1403 .exit = efi_exit,
1404 .unload_image = efi_unload_image,
1405 .exit_boot_services = efi_exit_boot_services,
1406 .get_next_monotonic_count = efi_get_next_monotonic_count,
1407 .stall = efi_stall,
1408 .set_watchdog_timer = efi_set_watchdog_timer,
1409 .connect_controller = efi_connect_controller,
1410 .disconnect_controller = efi_disconnect_controller,
1411 .open_protocol = efi_open_protocol,
1412 .close_protocol = efi_close_protocol,
1413 .open_protocol_information = efi_open_protocol_information,
1414 .protocols_per_handle = efi_protocols_per_handle,
1415 .locate_handle_buffer = efi_locate_handle_buffer,
1416 .locate_protocol = efi_locate_protocol,
1417 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces,
1418 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces,
1419 .calculate_crc32 = efi_calculate_crc32,
1420 .copy_mem = efi_copy_mem,
1421 .set_mem = efi_set_mem,
1422 };
1423
1424
1425 static uint16_t __efi_runtime_data firmware_vendor[] =
1426 { 'D','a','s',' ','U','-','b','o','o','t',0 };
1427
1428 struct efi_system_table __efi_runtime_data systab = {
1429 .hdr = {
1430 .signature = EFI_SYSTEM_TABLE_SIGNATURE,
1431 .revision = 0x20005, /* 2.5 */
1432 .headersize = sizeof(struct efi_table_hdr),
1433 },
1434 .fw_vendor = (long)firmware_vendor,
1435 .con_in = (void*)&efi_con_in,
1436 .con_out = (void*)&efi_con_out,
1437 .std_err = (void*)&efi_con_out,
1438 .runtime = (void*)&efi_runtime_services,
1439 .boottime = (void*)&efi_boot_services,
1440 .nr_tables = 0,
1441 .tables = (void*)efi_conf_table,
1442 };
"Das U-Boot" Source Tree