blob: 6f093290eb6d50f263511f9a45460ac175105905 [file] [log] [blame]
Alexander Grafbee91162016-03-04 01:09:59 +01001/*
2 * EFI application boot time services
3 *
4 * Copyright (c) 2016 Alexander Graf
5 *
6 * SPDX-License-Identifier: GPL-2.0+
7 */
8
Alexander Grafbee91162016-03-04 01:09:59 +01009#include <common.h>
10#include <efi_loader.h>
11#include <malloc.h>
12#include <asm/global_data.h>
13#include <libfdt_env.h>
14#include <u-boot/crc.h>
15#include <bootm.h>
16#include <inttypes.h>
17#include <watchdog.h>
18
19DECLARE_GLOBAL_DATA_PTR;
20
21/* This list contains all the EFI objects our payload has access to */
22LIST_HEAD(efi_obj_list);
23
24/*
25 * If we're running on nasty systems (32bit ARM booting into non-EFI Linux)
26 * we need to do trickery with caches. Since we don't want to break the EFI
27 * aware boot path, only apply hacks when loading exiting directly (breaking
28 * direct Linux EFI booting along the way - oh well).
29 */
30static bool efi_is_direct_boot = true;
31
32/*
33 * EFI can pass arbitrary additional "tables" containing vendor specific
34 * information to the payload. One such table is the FDT table which contains
35 * a pointer to a flattened device tree blob.
36 *
37 * In most cases we want to pass an FDT to the payload, so reserve one slot of
38 * config table space for it. The pointer gets populated by do_bootefi_exec().
39 */
Alexander Graf3c63db92016-10-14 13:45:30 +020040static struct efi_configuration_table __efi_runtime_data efi_conf_table[2];
Alexander Grafbee91162016-03-04 01:09:59 +010041
Simon Glass65e4c0b2016-09-25 15:27:35 -060042#ifdef CONFIG_ARM
Alexander Grafbee91162016-03-04 01:09:59 +010043/*
44 * The "gd" pointer lives in a register on ARM and AArch64 that we declare
45 * fixed when compiling U-Boot. However, the payload does not know about that
46 * restriction so we need to manually swap its and our view of that register on
47 * EFI callback entry/exit.
48 */
49static volatile void *efi_gd, *app_gd;
Simon Glass65e4c0b2016-09-25 15:27:35 -060050#endif
Alexander Grafbee91162016-03-04 01:09:59 +010051
52/* Called from do_bootefi_exec() */
53void efi_save_gd(void)
54{
Simon Glass65e4c0b2016-09-25 15:27:35 -060055#ifdef CONFIG_ARM
Alexander Grafbee91162016-03-04 01:09:59 +010056 efi_gd = gd;
Simon Glass65e4c0b2016-09-25 15:27:35 -060057#endif
Alexander Grafbee91162016-03-04 01:09:59 +010058}
59
60/* Called on every callback entry */
61void efi_restore_gd(void)
62{
Simon Glass65e4c0b2016-09-25 15:27:35 -060063#ifdef CONFIG_ARM
Alexander Grafbee91162016-03-04 01:09:59 +010064 /* Only restore if we're already in EFI context */
65 if (!efi_gd)
66 return;
67
68 if (gd != efi_gd)
69 app_gd = gd;
70 gd = efi_gd;
Simon Glass65e4c0b2016-09-25 15:27:35 -060071#endif
Alexander Grafbee91162016-03-04 01:09:59 +010072}
73
74/* Called on every callback exit */
75efi_status_t efi_exit_func(efi_status_t ret)
76{
Simon Glass65e4c0b2016-09-25 15:27:35 -060077#ifdef CONFIG_ARM
Alexander Grafbee91162016-03-04 01:09:59 +010078 gd = app_gd;
Simon Glass65e4c0b2016-09-25 15:27:35 -060079#endif
80
Alexander Grafbee91162016-03-04 01:09:59 +010081 return ret;
82}
83
84static efi_status_t efi_unsupported(const char *funcname)
85{
Alexander Grafedcef3b2016-06-02 11:38:27 +020086 debug("EFI: App called into unimplemented function %s\n", funcname);
Alexander Grafbee91162016-03-04 01:09:59 +010087 return EFI_EXIT(EFI_UNSUPPORTED);
88}
89
90static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
91{
92 return memcmp(g1, g2, sizeof(efi_guid_t));
93}
94
95static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl)
96{
97 EFI_ENTRY("0x%lx", new_tpl);
98 return EFI_EXIT(0);
99}
100
101static void EFIAPI efi_restore_tpl(unsigned long old_tpl)
102{
103 EFI_ENTRY("0x%lx", old_tpl);
104 EFI_EXIT(efi_unsupported(__func__));
105}
106
Masahiro Yamada6e0bf8d2017-06-22 17:49:03 +0900107static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type,
108 unsigned long pages,
109 uint64_t *memory)
Alexander Grafbee91162016-03-04 01:09:59 +0100110{
111 efi_status_t r;
112
113 EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory);
114 r = efi_allocate_pages(type, memory_type, pages, memory);
115 return EFI_EXIT(r);
116}
117
Masahiro Yamada6e0bf8d2017-06-22 17:49:03 +0900118static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory,
119 unsigned long pages)
Alexander Grafbee91162016-03-04 01:09:59 +0100120{
121 efi_status_t r;
122
123 EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages);
124 r = efi_free_pages(memory, pages);
125 return EFI_EXIT(r);
126}
127
Masahiro Yamada6e0bf8d2017-06-22 17:49:03 +0900128static efi_status_t EFIAPI efi_get_memory_map_ext(
129 unsigned long *memory_map_size,
130 struct efi_mem_desc *memory_map,
131 unsigned long *map_key,
132 unsigned long *descriptor_size,
133 uint32_t *descriptor_version)
Alexander Grafbee91162016-03-04 01:09:59 +0100134{
135 efi_status_t r;
136
137 EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map,
138 map_key, descriptor_size, descriptor_version);
139 r = efi_get_memory_map(memory_map_size, memory_map, map_key,
140 descriptor_size, descriptor_version);
141 return EFI_EXIT(r);
142}
143
Stefan Brünsead12742016-10-09 22:17:18 +0200144static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type,
145 unsigned long size,
146 void **buffer)
Alexander Grafbee91162016-03-04 01:09:59 +0100147{
Alexander Graf1cd29f02016-03-24 01:37:37 +0100148 efi_status_t r;
149
150 EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer);
Stefan Brünsead12742016-10-09 22:17:18 +0200151 r = efi_allocate_pool(pool_type, size, buffer);
Alexander Graf1cd29f02016-03-24 01:37:37 +0100152 return EFI_EXIT(r);
Alexander Grafbee91162016-03-04 01:09:59 +0100153}
154
Stefan Brüns42417bc2016-10-09 22:17:26 +0200155static efi_status_t EFIAPI efi_free_pool_ext(void *buffer)
Alexander Grafbee91162016-03-04 01:09:59 +0100156{
Alexander Graf1cd29f02016-03-24 01:37:37 +0100157 efi_status_t r;
158
159 EFI_ENTRY("%p", buffer);
Stefan Brüns42417bc2016-10-09 22:17:26 +0200160 r = efi_free_pool(buffer);
Alexander Graf1cd29f02016-03-24 01:37:37 +0100161 return EFI_EXIT(r);
Alexander Grafbee91162016-03-04 01:09:59 +0100162}
163
164/*
165 * Our event capabilities are very limited. Only support a single
166 * event to exist, so we don't need to maintain lists.
167 */
168static struct {
169 enum efi_event_type type;
170 u32 trigger_type;
171 u32 trigger_time;
172 u64 trigger_next;
173 unsigned long notify_tpl;
Simon Glasse2754582016-09-25 15:27:32 -0600174 void (EFIAPI *notify_function) (void *event, void *context);
Alexander Grafbee91162016-03-04 01:09:59 +0100175 void *notify_context;
176} efi_event = {
177 /* Disable timers on bootup */
178 .trigger_next = -1ULL,
179};
180
181static efi_status_t EFIAPI efi_create_event(
182 enum efi_event_type type, ulong notify_tpl,
Simon Glasse2754582016-09-25 15:27:32 -0600183 void (EFIAPI *notify_function) (void *event,
184 void *context),
Alexander Grafbee91162016-03-04 01:09:59 +0100185 void *notify_context, void **event)
186{
187 EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function,
188 notify_context);
189 if (efi_event.notify_function) {
190 /* We only support one event at a time */
191 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
192 }
193
Jonathan Graya95343b2017-03-12 19:26:07 +1100194 if (event == NULL)
195 return EFI_EXIT(EFI_INVALID_PARAMETER);
196
197 if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT))
198 return EFI_EXIT(EFI_INVALID_PARAMETER);
199
200 if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) &&
201 notify_function == NULL)
202 return EFI_EXIT(EFI_INVALID_PARAMETER);
203
Alexander Grafbee91162016-03-04 01:09:59 +0100204 efi_event.type = type;
205 efi_event.notify_tpl = notify_tpl;
206 efi_event.notify_function = notify_function;
207 efi_event.notify_context = notify_context;
208 *event = &efi_event;
209
210 return EFI_EXIT(EFI_SUCCESS);
211}
212
213/*
214 * Our timers have to work without interrupts, so we check whenever keyboard
215 * input or disk accesses happen if enough time elapsed for it to fire.
216 */
217void efi_timer_check(void)
218{
219 u64 now = timer_get_us();
220
221 if (now >= efi_event.trigger_next) {
222 /* Triggering! */
223 if (efi_event.trigger_type == EFI_TIMER_PERIODIC)
224 efi_event.trigger_next += efi_event.trigger_time / 10;
Jonathan Gray37a980b2017-03-12 19:26:06 +1100225 if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL))
226 efi_event.notify_function(&efi_event,
227 efi_event.notify_context);
Alexander Grafbee91162016-03-04 01:09:59 +0100228 }
229
230 WATCHDOG_RESET();
231}
232
233static efi_status_t EFIAPI efi_set_timer(void *event, int type,
234 uint64_t trigger_time)
235{
236 /* We don't have 64bit division available everywhere, so limit timer
237 * distances to 32bit bits. */
238 u32 trigger32 = trigger_time;
239
240 EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time);
241
242 if (trigger32 < trigger_time) {
243 printf("WARNING: Truncating timer from %"PRIx64" to %x\n",
244 trigger_time, trigger32);
245 }
246
247 if (event != &efi_event) {
248 /* We only support one event at a time */
249 return EFI_EXIT(EFI_INVALID_PARAMETER);
250 }
251
252 switch (type) {
253 case EFI_TIMER_STOP:
254 efi_event.trigger_next = -1ULL;
255 break;
256 case EFI_TIMER_PERIODIC:
257 case EFI_TIMER_RELATIVE:
258 efi_event.trigger_next = timer_get_us() + (trigger32 / 10);
259 break;
260 default:
261 return EFI_EXIT(EFI_INVALID_PARAMETER);
262 }
263 efi_event.trigger_type = type;
264 efi_event.trigger_time = trigger_time;
265
266 return EFI_EXIT(EFI_SUCCESS);
267}
268
269static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events,
270 void *event, unsigned long *index)
271{
272 u64 now;
273
274 EFI_ENTRY("%ld, %p, %p", num_events, event, index);
275
276 now = timer_get_us();
277 while (now < efi_event.trigger_next) { }
278 efi_timer_check();
279
280 return EFI_EXIT(EFI_SUCCESS);
281}
282
283static efi_status_t EFIAPI efi_signal_event(void *event)
284{
285 EFI_ENTRY("%p", event);
286 return EFI_EXIT(EFI_SUCCESS);
287}
288
289static efi_status_t EFIAPI efi_close_event(void *event)
290{
291 EFI_ENTRY("%p", event);
292 efi_event.trigger_next = -1ULL;
293 return EFI_EXIT(EFI_SUCCESS);
294}
295
296static efi_status_t EFIAPI efi_check_event(void *event)
297{
298 EFI_ENTRY("%p", event);
299 return EFI_EXIT(EFI_NOT_READY);
300}
301
302static efi_status_t EFIAPI efi_install_protocol_interface(void **handle,
303 efi_guid_t *protocol, int protocol_interface_type,
304 void *protocol_interface)
305{
xypron.glpk@gmx.dee0549f82017-07-11 22:06:16 +0200306 struct list_head *lhandle;
307 int i;
308 efi_status_t r;
309
xypron.glpk@gmx.dee0549f82017-07-11 22:06:16 +0200310 if (!handle || !protocol ||
311 protocol_interface_type != EFI_NATIVE_INTERFACE) {
312 r = EFI_INVALID_PARAMETER;
313 goto out;
314 }
315
316 /* Create new handle if requested. */
317 if (!*handle) {
318 r = EFI_OUT_OF_RESOURCES;
319 goto out;
320 }
321 /* Find object. */
322 list_for_each(lhandle, &efi_obj_list) {
323 struct efi_object *efiobj;
324 efiobj = list_entry(lhandle, struct efi_object, link);
325
326 if (efiobj->handle != *handle)
327 continue;
328 /* Check if protocol is already installed on the handle. */
329 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
330 struct efi_handler *handler = &efiobj->protocols[i];
331
332 if (!handler->guid)
333 continue;
334 if (!guidcmp(handler->guid, protocol)) {
335 r = EFI_INVALID_PARAMETER;
336 goto out;
337 }
338 }
339 /* Install protocol in first empty slot. */
340 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
341 struct efi_handler *handler = &efiobj->protocols[i];
342
343 if (handler->guid)
344 continue;
345
346 handler->guid = protocol;
347 handler->protocol_interface = protocol_interface;
348 r = EFI_SUCCESS;
349 goto out;
350 }
351 r = EFI_OUT_OF_RESOURCES;
352 goto out;
353 }
354 r = EFI_INVALID_PARAMETER;
355out:
xypron.glpk@gmx.de8bee5a32017-07-11 22:06:18 +0200356 return r;
357}
358
359static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle,
360 efi_guid_t *protocol, int protocol_interface_type,
361 void *protocol_interface)
362{
363 EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type,
364 protocol_interface);
365
366 return EFI_EXIT(efi_install_protocol_interface(handle, protocol,
367 protocol_interface_type,
368 protocol_interface));
Alexander Grafbee91162016-03-04 01:09:59 +0100369}
xypron.glpk@gmx.dee0549f82017-07-11 22:06:16 +0200370
Alexander Grafbee91162016-03-04 01:09:59 +0100371static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle,
372 efi_guid_t *protocol, void *old_interface,
373 void *new_interface)
374{
375 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface,
376 new_interface);
377 return EFI_EXIT(EFI_ACCESS_DENIED);
378}
379
380static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle,
381 efi_guid_t *protocol, void *protocol_interface)
382{
xypron.glpk@gmx.de4b6ed0d2017-07-11 22:06:17 +0200383 struct list_head *lhandle;
384 int i;
385 efi_status_t r = EFI_NOT_FOUND;
386
xypron.glpk@gmx.de4b6ed0d2017-07-11 22:06:17 +0200387 if (!handle || !protocol) {
388 r = EFI_INVALID_PARAMETER;
389 goto out;
390 }
391
392 list_for_each(lhandle, &efi_obj_list) {
393 struct efi_object *efiobj;
394 efiobj = list_entry(lhandle, struct efi_object, link);
395
396 if (efiobj->handle != handle)
397 continue;
398
399 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
400 struct efi_handler *handler = &efiobj->protocols[i];
401 const efi_guid_t *hprotocol = handler->guid;
402
403 if (!hprotocol)
404 continue;
405 if (!guidcmp(hprotocol, protocol)) {
406 if (handler->protocol_interface) {
407 r = EFI_ACCESS_DENIED;
408 } else {
409 handler->guid = 0;
410 r = EFI_SUCCESS;
411 }
412 goto out;
413 }
414 }
415 }
416
417out:
xypron.glpk@gmx.de3d8e1452017-07-11 22:06:19 +0200418 return r;
419}
420
421static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle,
422 efi_guid_t *protocol, void *protocol_interface)
423{
424 EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface);
425
426 return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol,
427 protocol_interface));
Alexander Grafbee91162016-03-04 01:09:59 +0100428}
429
430static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol,
431 void *event,
432 void **registration)
433{
434 EFI_ENTRY("%p, %p, %p", protocol, event, registration);
435 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
436}
437
438static int efi_search(enum efi_locate_search_type search_type,
439 efi_guid_t *protocol, void *search_key,
440 struct efi_object *efiobj)
441{
442 int i;
443
444 switch (search_type) {
445 case all_handles:
446 return 0;
447 case by_register_notify:
448 return -1;
449 case by_protocol:
450 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
451 const efi_guid_t *guid = efiobj->protocols[i].guid;
452 if (guid && !guidcmp(guid, protocol))
453 return 0;
454 }
455 return -1;
456 }
457
458 return -1;
459}
460
461static efi_status_t EFIAPI efi_locate_handle(
462 enum efi_locate_search_type search_type,
463 efi_guid_t *protocol, void *search_key,
464 unsigned long *buffer_size, efi_handle_t *buffer)
465{
466 struct list_head *lhandle;
467 unsigned long size = 0;
468
Alexander Grafbee91162016-03-04 01:09:59 +0100469 /* Count how much space we need */
470 list_for_each(lhandle, &efi_obj_list) {
471 struct efi_object *efiobj;
472 efiobj = list_entry(lhandle, struct efi_object, link);
473 if (!efi_search(search_type, protocol, search_key, efiobj)) {
474 size += sizeof(void*);
475 }
476 }
477
478 if (*buffer_size < size) {
479 *buffer_size = size;
xypron.glpk@gmx.de26329582017-07-11 22:06:21 +0200480 return EFI_BUFFER_TOO_SMALL;
Alexander Grafbee91162016-03-04 01:09:59 +0100481 }
482
483 /* Then fill the array */
484 list_for_each(lhandle, &efi_obj_list) {
485 struct efi_object *efiobj;
486 efiobj = list_entry(lhandle, struct efi_object, link);
487 if (!efi_search(search_type, protocol, search_key, efiobj)) {
488 *(buffer++) = efiobj->handle;
489 }
490 }
491
492 *buffer_size = size;
xypron.glpk@gmx.de26329582017-07-11 22:06:21 +0200493 return EFI_SUCCESS;
494}
495
496static efi_status_t EFIAPI efi_locate_handle_ext(
497 enum efi_locate_search_type search_type,
498 efi_guid_t *protocol, void *search_key,
499 unsigned long *buffer_size, efi_handle_t *buffer)
500{
501 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
502 buffer_size, buffer);
503
504 return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key,
505 buffer_size, buffer));
Alexander Grafbee91162016-03-04 01:09:59 +0100506}
507
508static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol,
509 struct efi_device_path **device_path,
510 efi_handle_t *device)
511{
512 EFI_ENTRY("%p, %p, %p", protocol, device_path, device);
513 return EFI_EXIT(EFI_NOT_FOUND);
514}
515
Alexander Graf488bf122016-08-19 01:23:24 +0200516efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table)
Alexander Grafbee91162016-03-04 01:09:59 +0100517{
518 int i;
519
Alexander Grafbee91162016-03-04 01:09:59 +0100520 /* Check for guid override */
521 for (i = 0; i < systab.nr_tables; i++) {
522 if (!guidcmp(guid, &efi_conf_table[i].guid)) {
523 efi_conf_table[i].table = table;
Alexander Graf488bf122016-08-19 01:23:24 +0200524 return EFI_SUCCESS;
Alexander Grafbee91162016-03-04 01:09:59 +0100525 }
526 }
527
528 /* No override, check for overflow */
529 if (i >= ARRAY_SIZE(efi_conf_table))
Alexander Graf488bf122016-08-19 01:23:24 +0200530 return EFI_OUT_OF_RESOURCES;
Alexander Grafbee91162016-03-04 01:09:59 +0100531
532 /* Add a new entry */
533 memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid));
534 efi_conf_table[i].table = table;
Alexander Grafaba5e912016-08-19 01:23:30 +0200535 systab.nr_tables = i + 1;
Alexander Grafbee91162016-03-04 01:09:59 +0100536
Alexander Graf488bf122016-08-19 01:23:24 +0200537 return EFI_SUCCESS;
538}
539
540static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid,
541 void *table)
542{
543 EFI_ENTRY("%p, %p", guid, table);
544 return EFI_EXIT(efi_install_configuration_table(guid, table));
Alexander Grafbee91162016-03-04 01:09:59 +0100545}
546
547static efi_status_t EFIAPI efi_load_image(bool boot_policy,
548 efi_handle_t parent_image,
549 struct efi_device_path *file_path,
550 void *source_buffer,
551 unsigned long source_size,
552 efi_handle_t *image_handle)
553{
554 static struct efi_object loaded_image_info_obj = {
555 .protocols = {
556 {
557 .guid = &efi_guid_loaded_image,
Alexander Grafbee91162016-03-04 01:09:59 +0100558 },
559 },
560 };
561 struct efi_loaded_image *info;
562 struct efi_object *obj;
563
564 EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image,
565 file_path, source_buffer, source_size, image_handle);
566 info = malloc(sizeof(*info));
xypron.glpk@gmx.deb5349f72017-07-11 22:06:14 +0200567 loaded_image_info_obj.protocols[0].protocol_interface = info;
Alexander Grafbee91162016-03-04 01:09:59 +0100568 obj = malloc(sizeof(loaded_image_info_obj));
569 memset(info, 0, sizeof(*info));
570 memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj));
571 obj->handle = info;
572 info->file_path = file_path;
573 info->reserved = efi_load_pe(source_buffer, info);
574 if (!info->reserved) {
575 free(info);
576 free(obj);
577 return EFI_EXIT(EFI_UNSUPPORTED);
578 }
579
580 *image_handle = info;
581 list_add_tail(&obj->link, &efi_obj_list);
582
583 return EFI_EXIT(EFI_SUCCESS);
584}
585
586static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
587 unsigned long *exit_data_size,
588 s16 **exit_data)
589{
590 ulong (*entry)(void *image_handle, struct efi_system_table *st);
591 struct efi_loaded_image *info = image_handle;
592
593 EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data);
594 entry = info->reserved;
595
596 efi_is_direct_boot = false;
597
598 /* call the image! */
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200599 if (setjmp(&info->exit_jmp)) {
600 /* We returned from the child image */
601 return EFI_EXIT(info->exit_status);
602 }
603
Alexander Grafbee91162016-03-04 01:09:59 +0100604 entry(image_handle, &systab);
605
606 /* Should usually never get here */
607 return EFI_EXIT(EFI_SUCCESS);
608}
609
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200610static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle,
611 efi_status_t exit_status, unsigned long exit_data_size,
612 int16_t *exit_data)
Alexander Grafbee91162016-03-04 01:09:59 +0100613{
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200614 struct efi_loaded_image *loaded_image_info = (void*)image_handle;
615
Alexander Grafbee91162016-03-04 01:09:59 +0100616 EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status,
617 exit_data_size, exit_data);
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200618
619 loaded_image_info->exit_status = exit_status;
Alexander Graf692fcdd2016-09-27 09:30:32 +0200620 longjmp(&loaded_image_info->exit_jmp, 1);
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200621
622 panic("EFI application exited");
Alexander Grafbee91162016-03-04 01:09:59 +0100623}
624
625static struct efi_object *efi_search_obj(void *handle)
626{
627 struct list_head *lhandle;
628
629 list_for_each(lhandle, &efi_obj_list) {
630 struct efi_object *efiobj;
631 efiobj = list_entry(lhandle, struct efi_object, link);
632 if (efiobj->handle == handle)
633 return efiobj;
634 }
635
636 return NULL;
637}
638
639static efi_status_t EFIAPI efi_unload_image(void *image_handle)
640{
641 struct efi_object *efiobj;
642
643 EFI_ENTRY("%p", image_handle);
644 efiobj = efi_search_obj(image_handle);
645 if (efiobj)
646 list_del(&efiobj->link);
647
648 return EFI_EXIT(EFI_SUCCESS);
649}
650
651static void efi_exit_caches(void)
652{
653#if defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
654 /*
655 * Grub on 32bit ARM needs to have caches disabled before jumping into
656 * a zImage, but does not know of all cache layers. Give it a hand.
657 */
658 if (efi_is_direct_boot)
659 cleanup_before_linux();
660#endif
661}
662
663static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle,
664 unsigned long map_key)
665{
666 EFI_ENTRY("%p, %ld", image_handle, map_key);
667
Alexander Grafb7b84102016-11-17 01:02:57 +0100668 board_quiesce_devices();
669
Alexander Grafbee91162016-03-04 01:09:59 +0100670 /* Fix up caches for EFI payloads if necessary */
671 efi_exit_caches();
672
673 /* This stops all lingering devices */
674 bootm_disable_interrupts();
675
676 /* Give the payload some time to boot */
677 WATCHDOG_RESET();
678
679 return EFI_EXIT(EFI_SUCCESS);
680}
681
682static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count)
683{
684 static uint64_t mono = 0;
685 EFI_ENTRY("%p", count);
686 *count = mono++;
687 return EFI_EXIT(EFI_SUCCESS);
688}
689
690static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
691{
692 EFI_ENTRY("%ld", microseconds);
693 udelay(microseconds);
694 return EFI_EXIT(EFI_SUCCESS);
695}
696
697static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout,
698 uint64_t watchdog_code,
699 unsigned long data_size,
700 uint16_t *watchdog_data)
701{
702 EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code,
703 data_size, watchdog_data);
704 return EFI_EXIT(efi_unsupported(__func__));
705}
706
707static efi_status_t EFIAPI efi_connect_controller(
708 efi_handle_t controller_handle,
709 efi_handle_t *driver_image_handle,
710 struct efi_device_path *remain_device_path,
711 bool recursive)
712{
713 EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle,
714 remain_device_path, recursive);
715 return EFI_EXIT(EFI_NOT_FOUND);
716}
717
718static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle,
719 void *driver_image_handle,
720 void *child_handle)
721{
722 EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
723 child_handle);
724 return EFI_EXIT(EFI_INVALID_PARAMETER);
725}
726
727static efi_status_t EFIAPI efi_close_protocol(void *handle,
728 efi_guid_t *protocol,
729 void *agent_handle,
730 void *controller_handle)
731{
732 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle,
733 controller_handle);
734 return EFI_EXIT(EFI_NOT_FOUND);
735}
736
737static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle,
738 efi_guid_t *protocol,
739 struct efi_open_protocol_info_entry **entry_buffer,
740 unsigned long *entry_count)
741{
742 EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer,
743 entry_count);
744 return EFI_EXIT(EFI_NOT_FOUND);
745}
746
747static efi_status_t EFIAPI efi_protocols_per_handle(void *handle,
748 efi_guid_t ***protocol_buffer,
749 unsigned long *protocol_buffer_count)
750{
751 EFI_ENTRY("%p, %p, %p", handle, protocol_buffer,
752 protocol_buffer_count);
753 return EFI_EXIT(EFI_OUT_OF_RESOURCES);
754}
755
756static efi_status_t EFIAPI efi_locate_handle_buffer(
757 enum efi_locate_search_type search_type,
758 efi_guid_t *protocol, void *search_key,
759 unsigned long *no_handles, efi_handle_t **buffer)
760{
xypron.glpk@gmx.dec2e703f2017-07-11 22:06:22 +0200761 efi_status_t r;
762 unsigned long buffer_size = 0;
763
Alexander Grafbee91162016-03-04 01:09:59 +0100764 EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key,
765 no_handles, buffer);
xypron.glpk@gmx.dec2e703f2017-07-11 22:06:22 +0200766
767 if (!no_handles || !buffer) {
768 r = EFI_INVALID_PARAMETER;
769 goto out;
770 }
771 *no_handles = 0;
772 *buffer = NULL;
773 r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
774 *buffer);
775 if (r != EFI_BUFFER_TOO_SMALL)
776 goto out;
777 r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size,
778 (void **)buffer);
779 if (r != EFI_SUCCESS)
780 goto out;
781 r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
782 *buffer);
783 if (r == EFI_SUCCESS)
784 *no_handles = buffer_size / sizeof(void *);
785out:
786 return EFI_EXIT(r);
Alexander Grafbee91162016-03-04 01:09:59 +0100787}
788
789static struct efi_class_map efi_class_maps[] = {
790 {
791 .guid = &efi_guid_console_control,
792 .interface = &efi_console_control
793 },
794};
795
796static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol,
797 void *registration,
798 void **protocol_interface)
799{
800 int i;
801
802 EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface);
803 for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) {
804 struct efi_class_map *curmap = &efi_class_maps[i];
805 if (!guidcmp(protocol, curmap->guid)) {
806 *protocol_interface = (void*)curmap->interface;
807 return EFI_EXIT(EFI_SUCCESS);
808 }
809 }
810
811 return EFI_EXIT(EFI_NOT_FOUND);
812}
813
814static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces(
815 void **handle, ...)
816{
817 EFI_ENTRY("%p", handle);
xypron.glpk@gmx.de58b83582017-07-11 22:06:20 +0200818
819 va_list argptr;
820 efi_guid_t *protocol;
821 void *protocol_interface;
822 efi_status_t r = EFI_SUCCESS;
823 int i = 0;
824
825 if (!handle)
826 return EFI_EXIT(EFI_INVALID_PARAMETER);
827
828 va_start(argptr, handle);
829 for (;;) {
830 protocol = va_arg(argptr, efi_guid_t*);
831 if (!protocol)
832 break;
833 protocol_interface = va_arg(argptr, void*);
834 r = efi_install_protocol_interface(handle, protocol,
835 EFI_NATIVE_INTERFACE,
836 protocol_interface);
837 if (r != EFI_SUCCESS)
838 break;
839 i++;
840 }
841 va_end(argptr);
842 if (r == EFI_SUCCESS)
843 return EFI_EXIT(r);
844
845 /* If an error occured undo all changes. */
846 va_start(argptr, handle);
847 for (; i; --i) {
848 protocol = va_arg(argptr, efi_guid_t*);
849 protocol_interface = va_arg(argptr, void*);
850 efi_uninstall_protocol_interface(handle, protocol,
851 protocol_interface);
852 }
853 va_end(argptr);
854
855 return EFI_EXIT(r);
Alexander Grafbee91162016-03-04 01:09:59 +0100856}
857
858static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces(
859 void *handle, ...)
860{
861 EFI_ENTRY("%p", handle);
862 return EFI_EXIT(EFI_INVALID_PARAMETER);
863}
864
865static efi_status_t EFIAPI efi_calculate_crc32(void *data,
866 unsigned long data_size,
867 uint32_t *crc32_p)
868{
869 EFI_ENTRY("%p, %ld", data, data_size);
870 *crc32_p = crc32(0, data, data_size);
871 return EFI_EXIT(EFI_SUCCESS);
872}
873
874static void EFIAPI efi_copy_mem(void *destination, void *source,
875 unsigned long length)
876{
877 EFI_ENTRY("%p, %p, %ld", destination, source, length);
878 memcpy(destination, source, length);
879}
880
881static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value)
882{
883 EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value);
884 memset(buffer, value, size);
885}
886
887static efi_status_t EFIAPI efi_open_protocol(
888 void *handle, efi_guid_t *protocol,
889 void **protocol_interface, void *agent_handle,
890 void *controller_handle, uint32_t attributes)
891{
892 struct list_head *lhandle;
893 int i;
xypron.glpk@gmx.de69baec62017-07-11 22:06:15 +0200894 efi_status_t r = EFI_INVALID_PARAMETER;
Alexander Grafbee91162016-03-04 01:09:59 +0100895
896 EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol,
897 protocol_interface, agent_handle, controller_handle,
898 attributes);
xypron.glpk@gmx.deb5349f72017-07-11 22:06:14 +0200899
xypron.glpk@gmx.de69baec62017-07-11 22:06:15 +0200900 if (!handle || !protocol ||
901 (!protocol_interface && attributes !=
902 EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) {
903 goto out;
904 }
905
906 switch (attributes) {
907 case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL:
908 case EFI_OPEN_PROTOCOL_GET_PROTOCOL:
909 case EFI_OPEN_PROTOCOL_TEST_PROTOCOL:
910 break;
911 case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER:
912 if (controller_handle == handle)
913 goto out;
914 case EFI_OPEN_PROTOCOL_BY_DRIVER:
915 case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE:
916 if (controller_handle == NULL)
917 goto out;
918 case EFI_OPEN_PROTOCOL_EXCLUSIVE:
919 if (agent_handle == NULL)
920 goto out;
921 break;
922 default:
xypron.glpk@gmx.deb5349f72017-07-11 22:06:14 +0200923 goto out;
924 }
925
Alexander Grafbee91162016-03-04 01:09:59 +0100926 list_for_each(lhandle, &efi_obj_list) {
927 struct efi_object *efiobj;
928 efiobj = list_entry(lhandle, struct efi_object, link);
929
930 if (efiobj->handle != handle)
931 continue;
932
933 for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) {
934 struct efi_handler *handler = &efiobj->protocols[i];
935 const efi_guid_t *hprotocol = handler->guid;
936 if (!hprotocol)
xypron.glpk@gmx.de4b6ed0d2017-07-11 22:06:17 +0200937 continue;
Alexander Grafbee91162016-03-04 01:09:59 +0100938 if (!guidcmp(hprotocol, protocol)) {
xypron.glpk@gmx.deb5349f72017-07-11 22:06:14 +0200939 if (attributes !=
940 EFI_OPEN_PROTOCOL_TEST_PROTOCOL) {
941 *protocol_interface =
942 handler->protocol_interface;
943 }
944 r = EFI_SUCCESS;
Alexander Grafbee91162016-03-04 01:09:59 +0100945 goto out;
946 }
947 }
xypron.glpk@gmx.de69baec62017-07-11 22:06:15 +0200948 goto unsupported;
Alexander Grafbee91162016-03-04 01:09:59 +0100949 }
950
xypron.glpk@gmx.de69baec62017-07-11 22:06:15 +0200951unsupported:
952 r = EFI_UNSUPPORTED;
Alexander Grafbee91162016-03-04 01:09:59 +0100953out:
954 return EFI_EXIT(r);
955}
956
957static efi_status_t EFIAPI efi_handle_protocol(void *handle,
958 efi_guid_t *protocol,
959 void **protocol_interface)
960{
xypron.glpk@gmx.de8e1d3292017-06-29 21:16:19 +0200961 return efi_open_protocol(handle, protocol, protocol_interface, NULL,
962 NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL);
Alexander Grafbee91162016-03-04 01:09:59 +0100963}
964
965static const struct efi_boot_services efi_boot_services = {
966 .hdr = {
967 .headersize = sizeof(struct efi_table_hdr),
968 },
969 .raise_tpl = efi_raise_tpl,
970 .restore_tpl = efi_restore_tpl,
971 .allocate_pages = efi_allocate_pages_ext,
972 .free_pages = efi_free_pages_ext,
973 .get_memory_map = efi_get_memory_map_ext,
Stefan Brünsead12742016-10-09 22:17:18 +0200974 .allocate_pool = efi_allocate_pool_ext,
Stefan Brüns42417bc2016-10-09 22:17:26 +0200975 .free_pool = efi_free_pool_ext,
Alexander Grafbee91162016-03-04 01:09:59 +0100976 .create_event = efi_create_event,
977 .set_timer = efi_set_timer,
978 .wait_for_event = efi_wait_for_event,
979 .signal_event = efi_signal_event,
980 .close_event = efi_close_event,
981 .check_event = efi_check_event,
xypron.glpk@gmx.de8bee5a32017-07-11 22:06:18 +0200982 .install_protocol_interface = efi_install_protocol_interface_ext,
Alexander Grafbee91162016-03-04 01:09:59 +0100983 .reinstall_protocol_interface = efi_reinstall_protocol_interface,
xypron.glpk@gmx.de3d8e1452017-07-11 22:06:19 +0200984 .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext,
Alexander Grafbee91162016-03-04 01:09:59 +0100985 .handle_protocol = efi_handle_protocol,
986 .reserved = NULL,
987 .register_protocol_notify = efi_register_protocol_notify,
xypron.glpk@gmx.de26329582017-07-11 22:06:21 +0200988 .locate_handle = efi_locate_handle_ext,
Alexander Grafbee91162016-03-04 01:09:59 +0100989 .locate_device_path = efi_locate_device_path,
Alexander Graf488bf122016-08-19 01:23:24 +0200990 .install_configuration_table = efi_install_configuration_table_ext,
Alexander Grafbee91162016-03-04 01:09:59 +0100991 .load_image = efi_load_image,
992 .start_image = efi_start_image,
Alexander Grafa86aeaf2016-05-20 23:28:23 +0200993 .exit = efi_exit,
Alexander Grafbee91162016-03-04 01:09:59 +0100994 .unload_image = efi_unload_image,
995 .exit_boot_services = efi_exit_boot_services,
996 .get_next_monotonic_count = efi_get_next_monotonic_count,
997 .stall = efi_stall,
998 .set_watchdog_timer = efi_set_watchdog_timer,
999 .connect_controller = efi_connect_controller,
1000 .disconnect_controller = efi_disconnect_controller,
1001 .open_protocol = efi_open_protocol,
1002 .close_protocol = efi_close_protocol,
1003 .open_protocol_information = efi_open_protocol_information,
1004 .protocols_per_handle = efi_protocols_per_handle,
1005 .locate_handle_buffer = efi_locate_handle_buffer,
1006 .locate_protocol = efi_locate_protocol,
1007 .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces,
1008 .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces,
1009 .calculate_crc32 = efi_calculate_crc32,
1010 .copy_mem = efi_copy_mem,
1011 .set_mem = efi_set_mem,
1012};
1013
1014
Alexander Graf3c63db92016-10-14 13:45:30 +02001015static uint16_t __efi_runtime_data firmware_vendor[] =
Alexander Grafbee91162016-03-04 01:09:59 +01001016 { 'D','a','s',' ','U','-','b','o','o','t',0 };
1017
Alexander Graf3c63db92016-10-14 13:45:30 +02001018struct efi_system_table __efi_runtime_data systab = {
Alexander Grafbee91162016-03-04 01:09:59 +01001019 .hdr = {
1020 .signature = EFI_SYSTEM_TABLE_SIGNATURE,
1021 .revision = 0x20005, /* 2.5 */
1022 .headersize = sizeof(struct efi_table_hdr),
1023 },
1024 .fw_vendor = (long)firmware_vendor,
1025 .con_in = (void*)&efi_con_in,
1026 .con_out = (void*)&efi_con_out,
1027 .std_err = (void*)&efi_con_out,
1028 .runtime = (void*)&efi_runtime_services,
1029 .boottime = (void*)&efi_boot_services,
1030 .nr_tables = 0,
1031 .tables = (void*)efi_conf_table,
1032};