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bee91169 AG |
1 | /* |
2 | * EFI application boot time services | |
3 | * | |
4 | * Copyright (c) 2016 Alexander Graf | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
bee91169 AG |
9 | #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 | ||
19 | DECLARE_GLOBAL_DATA_PTR; | |
20 | ||
21 | /* This list contains all the EFI objects our payload has access to */ | |
22 | LIST_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 | */ | |
30 | static 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 | */ | |
50149ea3 | 40 | static struct efi_configuration_table EFI_RUNTIME_DATA efi_conf_table[1]; |
bee91169 AG |
41 | |
42 | /* | |
43 | * The "gd" pointer lives in a register on ARM and AArch64 that we declare | |
44 | * fixed when compiling U-Boot. However, the payload does not know about that | |
45 | * restriction so we need to manually swap its and our view of that register on | |
46 | * EFI callback entry/exit. | |
47 | */ | |
48 | static volatile void *efi_gd, *app_gd; | |
49 | ||
50 | /* Called from do_bootefi_exec() */ | |
51 | void efi_save_gd(void) | |
52 | { | |
53 | efi_gd = gd; | |
54 | } | |
55 | ||
56 | /* Called on every callback entry */ | |
57 | void efi_restore_gd(void) | |
58 | { | |
59 | /* Only restore if we're already in EFI context */ | |
60 | if (!efi_gd) | |
61 | return; | |
62 | ||
63 | if (gd != efi_gd) | |
64 | app_gd = gd; | |
65 | gd = efi_gd; | |
66 | } | |
67 | ||
68 | /* Called on every callback exit */ | |
69 | efi_status_t efi_exit_func(efi_status_t ret) | |
70 | { | |
71 | gd = app_gd; | |
72 | return ret; | |
73 | } | |
74 | ||
75 | static efi_status_t efi_unsupported(const char *funcname) | |
76 | { | |
edcef3ba | 77 | debug("EFI: App called into unimplemented function %s\n", funcname); |
bee91169 AG |
78 | return EFI_EXIT(EFI_UNSUPPORTED); |
79 | } | |
80 | ||
81 | static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) | |
82 | { | |
83 | return memcmp(g1, g2, sizeof(efi_guid_t)); | |
84 | } | |
85 | ||
86 | static unsigned long EFIAPI efi_raise_tpl(unsigned long new_tpl) | |
87 | { | |
88 | EFI_ENTRY("0x%lx", new_tpl); | |
89 | return EFI_EXIT(0); | |
90 | } | |
91 | ||
92 | static void EFIAPI efi_restore_tpl(unsigned long old_tpl) | |
93 | { | |
94 | EFI_ENTRY("0x%lx", old_tpl); | |
95 | EFI_EXIT(efi_unsupported(__func__)); | |
96 | } | |
97 | ||
98 | efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, | |
99 | unsigned long pages, | |
100 | uint64_t *memory) | |
101 | { | |
102 | efi_status_t r; | |
103 | ||
104 | EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); | |
105 | r = efi_allocate_pages(type, memory_type, pages, memory); | |
106 | return EFI_EXIT(r); | |
107 | } | |
108 | ||
109 | efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, unsigned long pages) | |
110 | { | |
111 | efi_status_t r; | |
112 | ||
113 | EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); | |
114 | r = efi_free_pages(memory, pages); | |
115 | return EFI_EXIT(r); | |
116 | } | |
117 | ||
118 | efi_status_t EFIAPI efi_get_memory_map_ext(unsigned long *memory_map_size, | |
119 | struct efi_mem_desc *memory_map, | |
120 | unsigned long *map_key, | |
121 | unsigned long *descriptor_size, | |
122 | uint32_t *descriptor_version) | |
123 | { | |
124 | efi_status_t r; | |
125 | ||
126 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
127 | map_key, descriptor_size, descriptor_version); | |
128 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
129 | descriptor_size, descriptor_version); | |
130 | return EFI_EXIT(r); | |
131 | } | |
132 | ||
ead1274b SB |
133 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
134 | unsigned long size, | |
135 | void **buffer) | |
bee91169 | 136 | { |
1cd29f0a AG |
137 | efi_status_t r; |
138 | ||
139 | EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); | |
ead1274b | 140 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 141 | return EFI_EXIT(r); |
bee91169 AG |
142 | } |
143 | ||
42417bc8 | 144 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 145 | { |
1cd29f0a AG |
146 | efi_status_t r; |
147 | ||
148 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 149 | r = efi_free_pool(buffer); |
1cd29f0a | 150 | return EFI_EXIT(r); |
bee91169 AG |
151 | } |
152 | ||
153 | /* | |
154 | * Our event capabilities are very limited. Only support a single | |
155 | * event to exist, so we don't need to maintain lists. | |
156 | */ | |
157 | static struct { | |
158 | enum efi_event_type type; | |
159 | u32 trigger_type; | |
160 | u32 trigger_time; | |
161 | u64 trigger_next; | |
162 | unsigned long notify_tpl; | |
163 | void (*notify_function) (void *event, void *context); | |
164 | void *notify_context; | |
165 | } efi_event = { | |
166 | /* Disable timers on bootup */ | |
167 | .trigger_next = -1ULL, | |
168 | }; | |
169 | ||
170 | static efi_status_t EFIAPI efi_create_event( | |
171 | enum efi_event_type type, ulong notify_tpl, | |
172 | void (*notify_function) (void *event, void *context), | |
173 | void *notify_context, void **event) | |
174 | { | |
175 | EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function, | |
176 | notify_context); | |
177 | if (efi_event.notify_function) { | |
178 | /* We only support one event at a time */ | |
179 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
180 | } | |
181 | ||
182 | efi_event.type = type; | |
183 | efi_event.notify_tpl = notify_tpl; | |
184 | efi_event.notify_function = notify_function; | |
185 | efi_event.notify_context = notify_context; | |
186 | *event = &efi_event; | |
187 | ||
188 | return EFI_EXIT(EFI_SUCCESS); | |
189 | } | |
190 | ||
191 | /* | |
192 | * Our timers have to work without interrupts, so we check whenever keyboard | |
193 | * input or disk accesses happen if enough time elapsed for it to fire. | |
194 | */ | |
195 | void efi_timer_check(void) | |
196 | { | |
197 | u64 now = timer_get_us(); | |
198 | ||
199 | if (now >= efi_event.trigger_next) { | |
200 | /* Triggering! */ | |
201 | if (efi_event.trigger_type == EFI_TIMER_PERIODIC) | |
202 | efi_event.trigger_next += efi_event.trigger_time / 10; | |
203 | efi_event.notify_function(&efi_event, efi_event.notify_context); | |
204 | } | |
205 | ||
206 | WATCHDOG_RESET(); | |
207 | } | |
208 | ||
209 | static efi_status_t EFIAPI efi_set_timer(void *event, int type, | |
210 | uint64_t trigger_time) | |
211 | { | |
212 | /* We don't have 64bit division available everywhere, so limit timer | |
213 | * distances to 32bit bits. */ | |
214 | u32 trigger32 = trigger_time; | |
215 | ||
216 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
217 | ||
218 | if (trigger32 < trigger_time) { | |
219 | printf("WARNING: Truncating timer from %"PRIx64" to %x\n", | |
220 | trigger_time, trigger32); | |
221 | } | |
222 | ||
223 | if (event != &efi_event) { | |
224 | /* We only support one event at a time */ | |
225 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
226 | } | |
227 | ||
228 | switch (type) { | |
229 | case EFI_TIMER_STOP: | |
230 | efi_event.trigger_next = -1ULL; | |
231 | break; | |
232 | case EFI_TIMER_PERIODIC: | |
233 | case EFI_TIMER_RELATIVE: | |
234 | efi_event.trigger_next = timer_get_us() + (trigger32 / 10); | |
235 | break; | |
236 | default: | |
237 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
238 | } | |
239 | efi_event.trigger_type = type; | |
240 | efi_event.trigger_time = trigger_time; | |
241 | ||
242 | return EFI_EXIT(EFI_SUCCESS); | |
243 | } | |
244 | ||
245 | static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, | |
246 | void *event, unsigned long *index) | |
247 | { | |
248 | u64 now; | |
249 | ||
250 | EFI_ENTRY("%ld, %p, %p", num_events, event, index); | |
251 | ||
252 | now = timer_get_us(); | |
253 | while (now < efi_event.trigger_next) { } | |
254 | efi_timer_check(); | |
255 | ||
256 | return EFI_EXIT(EFI_SUCCESS); | |
257 | } | |
258 | ||
259 | static efi_status_t EFIAPI efi_signal_event(void *event) | |
260 | { | |
261 | EFI_ENTRY("%p", event); | |
262 | return EFI_EXIT(EFI_SUCCESS); | |
263 | } | |
264 | ||
265 | static efi_status_t EFIAPI efi_close_event(void *event) | |
266 | { | |
267 | EFI_ENTRY("%p", event); | |
268 | efi_event.trigger_next = -1ULL; | |
269 | return EFI_EXIT(EFI_SUCCESS); | |
270 | } | |
271 | ||
272 | static efi_status_t EFIAPI efi_check_event(void *event) | |
273 | { | |
274 | EFI_ENTRY("%p", event); | |
275 | return EFI_EXIT(EFI_NOT_READY); | |
276 | } | |
277 | ||
278 | static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, | |
279 | efi_guid_t *protocol, int protocol_interface_type, | |
280 | void *protocol_interface) | |
281 | { | |
282 | EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, | |
283 | protocol_interface); | |
284 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
285 | } | |
286 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, | |
287 | efi_guid_t *protocol, void *old_interface, | |
288 | void *new_interface) | |
289 | { | |
290 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, | |
291 | new_interface); | |
292 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
293 | } | |
294 | ||
295 | static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, | |
296 | efi_guid_t *protocol, void *protocol_interface) | |
297 | { | |
298 | EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); | |
299 | return EFI_EXIT(EFI_NOT_FOUND); | |
300 | } | |
301 | ||
302 | static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, | |
303 | void *event, | |
304 | void **registration) | |
305 | { | |
306 | EFI_ENTRY("%p, %p, %p", protocol, event, registration); | |
307 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
308 | } | |
309 | ||
310 | static int efi_search(enum efi_locate_search_type search_type, | |
311 | efi_guid_t *protocol, void *search_key, | |
312 | struct efi_object *efiobj) | |
313 | { | |
314 | int i; | |
315 | ||
316 | switch (search_type) { | |
317 | case all_handles: | |
318 | return 0; | |
319 | case by_register_notify: | |
320 | return -1; | |
321 | case by_protocol: | |
322 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
323 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
324 | if (guid && !guidcmp(guid, protocol)) | |
325 | return 0; | |
326 | } | |
327 | return -1; | |
328 | } | |
329 | ||
330 | return -1; | |
331 | } | |
332 | ||
333 | static efi_status_t EFIAPI efi_locate_handle( | |
334 | enum efi_locate_search_type search_type, | |
335 | efi_guid_t *protocol, void *search_key, | |
336 | unsigned long *buffer_size, efi_handle_t *buffer) | |
337 | { | |
338 | struct list_head *lhandle; | |
339 | unsigned long size = 0; | |
340 | ||
341 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
342 | buffer_size, buffer); | |
343 | ||
344 | /* Count how much space we need */ | |
345 | list_for_each(lhandle, &efi_obj_list) { | |
346 | struct efi_object *efiobj; | |
347 | efiobj = list_entry(lhandle, struct efi_object, link); | |
348 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
349 | size += sizeof(void*); | |
350 | } | |
351 | } | |
352 | ||
353 | if (*buffer_size < size) { | |
354 | *buffer_size = size; | |
355 | return EFI_EXIT(EFI_BUFFER_TOO_SMALL); | |
356 | } | |
357 | ||
358 | /* Then fill the array */ | |
359 | list_for_each(lhandle, &efi_obj_list) { | |
360 | struct efi_object *efiobj; | |
361 | efiobj = list_entry(lhandle, struct efi_object, link); | |
362 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
363 | *(buffer++) = efiobj->handle; | |
364 | } | |
365 | } | |
366 | ||
367 | *buffer_size = size; | |
368 | return EFI_EXIT(EFI_SUCCESS); | |
369 | } | |
370 | ||
371 | static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, | |
372 | struct efi_device_path **device_path, | |
373 | efi_handle_t *device) | |
374 | { | |
375 | EFI_ENTRY("%p, %p, %p", protocol, device_path, device); | |
376 | return EFI_EXIT(EFI_NOT_FOUND); | |
377 | } | |
378 | ||
379 | static efi_status_t EFIAPI efi_install_configuration_table(efi_guid_t *guid, | |
380 | void *table) | |
381 | { | |
382 | int i; | |
383 | ||
384 | EFI_ENTRY("%p, %p", guid, table); | |
385 | ||
386 | /* Check for guid override */ | |
387 | for (i = 0; i < systab.nr_tables; i++) { | |
388 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
389 | efi_conf_table[i].table = table; | |
390 | return EFI_EXIT(EFI_SUCCESS); | |
391 | } | |
392 | } | |
393 | ||
394 | /* No override, check for overflow */ | |
395 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
396 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
397 | ||
398 | /* Add a new entry */ | |
399 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
400 | efi_conf_table[i].table = table; | |
401 | systab.nr_tables = i; | |
402 | ||
403 | return EFI_EXIT(EFI_SUCCESS); | |
404 | } | |
405 | ||
406 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, | |
407 | efi_handle_t parent_image, | |
408 | struct efi_device_path *file_path, | |
409 | void *source_buffer, | |
410 | unsigned long source_size, | |
411 | efi_handle_t *image_handle) | |
412 | { | |
413 | static struct efi_object loaded_image_info_obj = { | |
414 | .protocols = { | |
415 | { | |
416 | .guid = &efi_guid_loaded_image, | |
417 | .open = &efi_return_handle, | |
418 | }, | |
419 | }, | |
420 | }; | |
421 | struct efi_loaded_image *info; | |
422 | struct efi_object *obj; | |
423 | ||
424 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
425 | file_path, source_buffer, source_size, image_handle); | |
426 | info = malloc(sizeof(*info)); | |
427 | obj = malloc(sizeof(loaded_image_info_obj)); | |
428 | memset(info, 0, sizeof(*info)); | |
429 | memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); | |
430 | obj->handle = info; | |
431 | info->file_path = file_path; | |
432 | info->reserved = efi_load_pe(source_buffer, info); | |
433 | if (!info->reserved) { | |
434 | free(info); | |
435 | free(obj); | |
436 | return EFI_EXIT(EFI_UNSUPPORTED); | |
437 | } | |
438 | ||
439 | *image_handle = info; | |
440 | list_add_tail(&obj->link, &efi_obj_list); | |
441 | ||
442 | return EFI_EXIT(EFI_SUCCESS); | |
443 | } | |
444 | ||
445 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, | |
446 | unsigned long *exit_data_size, | |
447 | s16 **exit_data) | |
448 | { | |
449 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
450 | struct efi_loaded_image *info = image_handle; | |
451 | ||
452 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
453 | entry = info->reserved; | |
454 | ||
455 | efi_is_direct_boot = false; | |
456 | ||
457 | /* call the image! */ | |
a86aeaf2 AG |
458 | if (setjmp(&info->exit_jmp)) { |
459 | /* We returned from the child image */ | |
460 | return EFI_EXIT(info->exit_status); | |
461 | } | |
462 | ||
bee91169 AG |
463 | entry(image_handle, &systab); |
464 | ||
465 | /* Should usually never get here */ | |
466 | return EFI_EXIT(EFI_SUCCESS); | |
467 | } | |
468 | ||
a86aeaf2 AG |
469 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
470 | efi_status_t exit_status, unsigned long exit_data_size, | |
471 | int16_t *exit_data) | |
bee91169 | 472 | { |
a86aeaf2 AG |
473 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
474 | ||
bee91169 AG |
475 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
476 | exit_data_size, exit_data); | |
a86aeaf2 AG |
477 | |
478 | loaded_image_info->exit_status = exit_status; | |
692fcdd8 | 479 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
480 | |
481 | panic("EFI application exited"); | |
bee91169 AG |
482 | } |
483 | ||
484 | static struct efi_object *efi_search_obj(void *handle) | |
485 | { | |
486 | struct list_head *lhandle; | |
487 | ||
488 | list_for_each(lhandle, &efi_obj_list) { | |
489 | struct efi_object *efiobj; | |
490 | efiobj = list_entry(lhandle, struct efi_object, link); | |
491 | if (efiobj->handle == handle) | |
492 | return efiobj; | |
493 | } | |
494 | ||
495 | return NULL; | |
496 | } | |
497 | ||
498 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) | |
499 | { | |
500 | struct efi_object *efiobj; | |
501 | ||
502 | EFI_ENTRY("%p", image_handle); | |
503 | efiobj = efi_search_obj(image_handle); | |
504 | if (efiobj) | |
505 | list_del(&efiobj->link); | |
506 | ||
507 | return EFI_EXIT(EFI_SUCCESS); | |
508 | } | |
509 | ||
510 | static void efi_exit_caches(void) | |
511 | { | |
512 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
513 | /* | |
514 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
515 | * a zImage, but does not know of all cache layers. Give it a hand. | |
516 | */ | |
517 | if (efi_is_direct_boot) | |
518 | cleanup_before_linux(); | |
519 | #endif | |
520 | } | |
521 | ||
522 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, | |
523 | unsigned long map_key) | |
524 | { | |
525 | EFI_ENTRY("%p, %ld", image_handle, map_key); | |
526 | ||
527 | /* Fix up caches for EFI payloads if necessary */ | |
528 | efi_exit_caches(); | |
529 | ||
530 | /* This stops all lingering devices */ | |
531 | bootm_disable_interrupts(); | |
532 | ||
533 | /* Give the payload some time to boot */ | |
534 | WATCHDOG_RESET(); | |
535 | ||
536 | return EFI_EXIT(EFI_SUCCESS); | |
537 | } | |
538 | ||
539 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) | |
540 | { | |
541 | static uint64_t mono = 0; | |
542 | EFI_ENTRY("%p", count); | |
543 | *count = mono++; | |
544 | return EFI_EXIT(EFI_SUCCESS); | |
545 | } | |
546 | ||
547 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) | |
548 | { | |
549 | EFI_ENTRY("%ld", microseconds); | |
550 | udelay(microseconds); | |
551 | return EFI_EXIT(EFI_SUCCESS); | |
552 | } | |
553 | ||
554 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, | |
555 | uint64_t watchdog_code, | |
556 | unsigned long data_size, | |
557 | uint16_t *watchdog_data) | |
558 | { | |
559 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
560 | data_size, watchdog_data); | |
561 | return EFI_EXIT(efi_unsupported(__func__)); | |
562 | } | |
563 | ||
564 | static efi_status_t EFIAPI efi_connect_controller( | |
565 | efi_handle_t controller_handle, | |
566 | efi_handle_t *driver_image_handle, | |
567 | struct efi_device_path *remain_device_path, | |
568 | bool recursive) | |
569 | { | |
570 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
571 | remain_device_path, recursive); | |
572 | return EFI_EXIT(EFI_NOT_FOUND); | |
573 | } | |
574 | ||
575 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, | |
576 | void *driver_image_handle, | |
577 | void *child_handle) | |
578 | { | |
579 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
580 | child_handle); | |
581 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
582 | } | |
583 | ||
584 | static efi_status_t EFIAPI efi_close_protocol(void *handle, | |
585 | efi_guid_t *protocol, | |
586 | void *agent_handle, | |
587 | void *controller_handle) | |
588 | { | |
589 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, | |
590 | controller_handle); | |
591 | return EFI_EXIT(EFI_NOT_FOUND); | |
592 | } | |
593 | ||
594 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, | |
595 | efi_guid_t *protocol, | |
596 | struct efi_open_protocol_info_entry **entry_buffer, | |
597 | unsigned long *entry_count) | |
598 | { | |
599 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, | |
600 | entry_count); | |
601 | return EFI_EXIT(EFI_NOT_FOUND); | |
602 | } | |
603 | ||
604 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, | |
605 | efi_guid_t ***protocol_buffer, | |
606 | unsigned long *protocol_buffer_count) | |
607 | { | |
608 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, | |
609 | protocol_buffer_count); | |
610 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
611 | } | |
612 | ||
613 | static efi_status_t EFIAPI efi_locate_handle_buffer( | |
614 | enum efi_locate_search_type search_type, | |
615 | efi_guid_t *protocol, void *search_key, | |
616 | unsigned long *no_handles, efi_handle_t **buffer) | |
617 | { | |
618 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
619 | no_handles, buffer); | |
620 | return EFI_EXIT(EFI_NOT_FOUND); | |
621 | } | |
622 | ||
623 | static struct efi_class_map efi_class_maps[] = { | |
624 | { | |
625 | .guid = &efi_guid_console_control, | |
626 | .interface = &efi_console_control | |
627 | }, | |
628 | }; | |
629 | ||
630 | static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, | |
631 | void *registration, | |
632 | void **protocol_interface) | |
633 | { | |
634 | int i; | |
635 | ||
636 | EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); | |
637 | for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { | |
638 | struct efi_class_map *curmap = &efi_class_maps[i]; | |
639 | if (!guidcmp(protocol, curmap->guid)) { | |
640 | *protocol_interface = (void*)curmap->interface; | |
641 | return EFI_EXIT(EFI_SUCCESS); | |
642 | } | |
643 | } | |
644 | ||
645 | return EFI_EXIT(EFI_NOT_FOUND); | |
646 | } | |
647 | ||
648 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( | |
649 | void **handle, ...) | |
650 | { | |
651 | EFI_ENTRY("%p", handle); | |
652 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
653 | } | |
654 | ||
655 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( | |
656 | void *handle, ...) | |
657 | { | |
658 | EFI_ENTRY("%p", handle); | |
659 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
660 | } | |
661 | ||
662 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, | |
663 | unsigned long data_size, | |
664 | uint32_t *crc32_p) | |
665 | { | |
666 | EFI_ENTRY("%p, %ld", data, data_size); | |
667 | *crc32_p = crc32(0, data, data_size); | |
668 | return EFI_EXIT(EFI_SUCCESS); | |
669 | } | |
670 | ||
671 | static void EFIAPI efi_copy_mem(void *destination, void *source, | |
672 | unsigned long length) | |
673 | { | |
674 | EFI_ENTRY("%p, %p, %ld", destination, source, length); | |
675 | memcpy(destination, source, length); | |
676 | } | |
677 | ||
678 | static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) | |
679 | { | |
680 | EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); | |
681 | memset(buffer, value, size); | |
682 | } | |
683 | ||
684 | static efi_status_t EFIAPI efi_open_protocol( | |
685 | void *handle, efi_guid_t *protocol, | |
686 | void **protocol_interface, void *agent_handle, | |
687 | void *controller_handle, uint32_t attributes) | |
688 | { | |
689 | struct list_head *lhandle; | |
690 | int i; | |
691 | efi_status_t r = EFI_UNSUPPORTED; | |
692 | ||
693 | EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, | |
694 | protocol_interface, agent_handle, controller_handle, | |
695 | attributes); | |
696 | list_for_each(lhandle, &efi_obj_list) { | |
697 | struct efi_object *efiobj; | |
698 | efiobj = list_entry(lhandle, struct efi_object, link); | |
699 | ||
700 | if (efiobj->handle != handle) | |
701 | continue; | |
702 | ||
703 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
704 | struct efi_handler *handler = &efiobj->protocols[i]; | |
705 | const efi_guid_t *hprotocol = handler->guid; | |
706 | if (!hprotocol) | |
707 | break; | |
708 | if (!guidcmp(hprotocol, protocol)) { | |
709 | r = handler->open(handle, protocol, | |
710 | protocol_interface, agent_handle, | |
711 | controller_handle, attributes); | |
712 | goto out; | |
713 | } | |
714 | } | |
715 | } | |
716 | ||
717 | out: | |
718 | return EFI_EXIT(r); | |
719 | } | |
720 | ||
721 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, | |
722 | efi_guid_t *protocol, | |
723 | void **protocol_interface) | |
724 | { | |
bee91169 AG |
725 | return efi_open_protocol(handle, protocol, protocol_interface, |
726 | NULL, NULL, 0); | |
727 | } | |
728 | ||
729 | static const struct efi_boot_services efi_boot_services = { | |
730 | .hdr = { | |
731 | .headersize = sizeof(struct efi_table_hdr), | |
732 | }, | |
733 | .raise_tpl = efi_raise_tpl, | |
734 | .restore_tpl = efi_restore_tpl, | |
735 | .allocate_pages = efi_allocate_pages_ext, | |
736 | .free_pages = efi_free_pages_ext, | |
737 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 738 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 739 | .free_pool = efi_free_pool_ext, |
bee91169 AG |
740 | .create_event = efi_create_event, |
741 | .set_timer = efi_set_timer, | |
742 | .wait_for_event = efi_wait_for_event, | |
743 | .signal_event = efi_signal_event, | |
744 | .close_event = efi_close_event, | |
745 | .check_event = efi_check_event, | |
746 | .install_protocol_interface = efi_install_protocol_interface, | |
747 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, | |
748 | .uninstall_protocol_interface = efi_uninstall_protocol_interface, | |
749 | .handle_protocol = efi_handle_protocol, | |
750 | .reserved = NULL, | |
751 | .register_protocol_notify = efi_register_protocol_notify, | |
752 | .locate_handle = efi_locate_handle, | |
753 | .locate_device_path = efi_locate_device_path, | |
754 | .install_configuration_table = efi_install_configuration_table, | |
755 | .load_image = efi_load_image, | |
756 | .start_image = efi_start_image, | |
a86aeaf2 | 757 | .exit = efi_exit, |
bee91169 AG |
758 | .unload_image = efi_unload_image, |
759 | .exit_boot_services = efi_exit_boot_services, | |
760 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
761 | .stall = efi_stall, | |
762 | .set_watchdog_timer = efi_set_watchdog_timer, | |
763 | .connect_controller = efi_connect_controller, | |
764 | .disconnect_controller = efi_disconnect_controller, | |
765 | .open_protocol = efi_open_protocol, | |
766 | .close_protocol = efi_close_protocol, | |
767 | .open_protocol_information = efi_open_protocol_information, | |
768 | .protocols_per_handle = efi_protocols_per_handle, | |
769 | .locate_handle_buffer = efi_locate_handle_buffer, | |
770 | .locate_protocol = efi_locate_protocol, | |
771 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
772 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
773 | .calculate_crc32 = efi_calculate_crc32, | |
774 | .copy_mem = efi_copy_mem, | |
775 | .set_mem = efi_set_mem, | |
776 | }; | |
777 | ||
778 | ||
50149ea3 | 779 | static uint16_t EFI_RUNTIME_DATA firmware_vendor[] = |
bee91169 AG |
780 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
781 | ||
50149ea3 | 782 | struct efi_system_table EFI_RUNTIME_DATA systab = { |
bee91169 AG |
783 | .hdr = { |
784 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
785 | .revision = 0x20005, /* 2.5 */ | |
786 | .headersize = sizeof(struct efi_table_hdr), | |
787 | }, | |
788 | .fw_vendor = (long)firmware_vendor, | |
789 | .con_in = (void*)&efi_con_in, | |
790 | .con_out = (void*)&efi_con_out, | |
791 | .std_err = (void*)&efi_con_out, | |
792 | .runtime = (void*)&efi_runtime_services, | |
793 | .boottime = (void*)&efi_boot_services, | |
794 | .nr_tables = 0, | |
795 | .tables = (void*)efi_conf_table, | |
796 | }; |