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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 | */ | |
3c63db9c | 40 | static struct efi_configuration_table __efi_runtime_data efi_conf_table[2]; |
bee91169 | 41 | |
65e4c0b1 | 42 | #ifdef CONFIG_ARM |
bee91169 AG |
43 | /* |
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 | */ | |
49 | static volatile void *efi_gd, *app_gd; | |
65e4c0b1 | 50 | #endif |
bee91169 AG |
51 | |
52 | /* Called from do_bootefi_exec() */ | |
53 | void efi_save_gd(void) | |
54 | { | |
65e4c0b1 | 55 | #ifdef CONFIG_ARM |
bee91169 | 56 | efi_gd = gd; |
65e4c0b1 | 57 | #endif |
bee91169 AG |
58 | } |
59 | ||
60 | /* Called on every callback entry */ | |
61 | void efi_restore_gd(void) | |
62 | { | |
65e4c0b1 | 63 | #ifdef CONFIG_ARM |
bee91169 AG |
64 | /* 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; | |
65e4c0b1 | 71 | #endif |
bee91169 AG |
72 | } |
73 | ||
74 | /* Called on every callback exit */ | |
75 | efi_status_t efi_exit_func(efi_status_t ret) | |
76 | { | |
65e4c0b1 | 77 | #ifdef CONFIG_ARM |
bee91169 | 78 | gd = app_gd; |
65e4c0b1 SG |
79 | #endif |
80 | ||
bee91169 AG |
81 | return ret; |
82 | } | |
83 | ||
84 | static efi_status_t efi_unsupported(const char *funcname) | |
85 | { | |
edcef3ba | 86 | debug("EFI: App called into unimplemented function %s\n", funcname); |
bee91169 AG |
87 | return EFI_EXIT(EFI_UNSUPPORTED); |
88 | } | |
89 | ||
90 | static int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) | |
91 | { | |
92 | return memcmp(g1, g2, sizeof(efi_guid_t)); | |
93 | } | |
94 | ||
95 | static 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 | ||
101 | static 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 | ||
107 | efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, | |
108 | unsigned long pages, | |
109 | uint64_t *memory) | |
110 | { | |
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 | ||
118 | efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, unsigned long pages) | |
119 | { | |
120 | efi_status_t r; | |
121 | ||
122 | EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); | |
123 | r = efi_free_pages(memory, pages); | |
124 | return EFI_EXIT(r); | |
125 | } | |
126 | ||
127 | efi_status_t EFIAPI efi_get_memory_map_ext(unsigned long *memory_map_size, | |
128 | struct efi_mem_desc *memory_map, | |
129 | unsigned long *map_key, | |
130 | unsigned long *descriptor_size, | |
131 | uint32_t *descriptor_version) | |
132 | { | |
133 | efi_status_t r; | |
134 | ||
135 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
136 | map_key, descriptor_size, descriptor_version); | |
137 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
138 | descriptor_size, descriptor_version); | |
139 | return EFI_EXIT(r); | |
140 | } | |
141 | ||
ead1274b SB |
142 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
143 | unsigned long size, | |
144 | void **buffer) | |
bee91169 | 145 | { |
1cd29f0a AG |
146 | efi_status_t r; |
147 | ||
148 | EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); | |
ead1274b | 149 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 150 | return EFI_EXIT(r); |
bee91169 AG |
151 | } |
152 | ||
42417bc8 | 153 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 154 | { |
1cd29f0a AG |
155 | efi_status_t r; |
156 | ||
157 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 158 | r = efi_free_pool(buffer); |
1cd29f0a | 159 | return EFI_EXIT(r); |
bee91169 AG |
160 | } |
161 | ||
162 | /* | |
163 | * Our event capabilities are very limited. Only support a single | |
164 | * event to exist, so we don't need to maintain lists. | |
165 | */ | |
166 | static struct { | |
167 | enum efi_event_type type; | |
168 | u32 trigger_type; | |
169 | u32 trigger_time; | |
170 | u64 trigger_next; | |
171 | unsigned long notify_tpl; | |
e275458c | 172 | void (EFIAPI *notify_function) (void *event, void *context); |
bee91169 AG |
173 | void *notify_context; |
174 | } efi_event = { | |
175 | /* Disable timers on bootup */ | |
176 | .trigger_next = -1ULL, | |
177 | }; | |
178 | ||
179 | static efi_status_t EFIAPI efi_create_event( | |
180 | enum efi_event_type type, ulong notify_tpl, | |
e275458c SG |
181 | void (EFIAPI *notify_function) (void *event, |
182 | void *context), | |
bee91169 AG |
183 | void *notify_context, void **event) |
184 | { | |
185 | EFI_ENTRY("%d, 0x%lx, %p, %p", type, notify_tpl, notify_function, | |
186 | notify_context); | |
187 | if (efi_event.notify_function) { | |
188 | /* We only support one event at a time */ | |
189 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
190 | } | |
191 | ||
a95343b8 JG |
192 | if (event == NULL) |
193 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
194 | ||
195 | if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) | |
196 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
197 | ||
198 | if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && | |
199 | notify_function == NULL) | |
200 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
201 | ||
bee91169 AG |
202 | efi_event.type = type; |
203 | efi_event.notify_tpl = notify_tpl; | |
204 | efi_event.notify_function = notify_function; | |
205 | efi_event.notify_context = notify_context; | |
206 | *event = &efi_event; | |
207 | ||
208 | return EFI_EXIT(EFI_SUCCESS); | |
209 | } | |
210 | ||
211 | /* | |
212 | * Our timers have to work without interrupts, so we check whenever keyboard | |
213 | * input or disk accesses happen if enough time elapsed for it to fire. | |
214 | */ | |
215 | void efi_timer_check(void) | |
216 | { | |
217 | u64 now = timer_get_us(); | |
218 | ||
219 | if (now >= efi_event.trigger_next) { | |
220 | /* Triggering! */ | |
221 | if (efi_event.trigger_type == EFI_TIMER_PERIODIC) | |
222 | efi_event.trigger_next += efi_event.trigger_time / 10; | |
37a980b3 JG |
223 | if (efi_event.type & (EVT_NOTIFY_WAIT | EVT_NOTIFY_SIGNAL)) |
224 | efi_event.notify_function(&efi_event, | |
225 | efi_event.notify_context); | |
bee91169 AG |
226 | } |
227 | ||
228 | WATCHDOG_RESET(); | |
229 | } | |
230 | ||
231 | static efi_status_t EFIAPI efi_set_timer(void *event, int type, | |
232 | uint64_t trigger_time) | |
233 | { | |
234 | /* We don't have 64bit division available everywhere, so limit timer | |
235 | * distances to 32bit bits. */ | |
236 | u32 trigger32 = trigger_time; | |
237 | ||
238 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
239 | ||
240 | if (trigger32 < trigger_time) { | |
241 | printf("WARNING: Truncating timer from %"PRIx64" to %x\n", | |
242 | trigger_time, trigger32); | |
243 | } | |
244 | ||
245 | if (event != &efi_event) { | |
246 | /* We only support one event at a time */ | |
247 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
248 | } | |
249 | ||
250 | switch (type) { | |
251 | case EFI_TIMER_STOP: | |
252 | efi_event.trigger_next = -1ULL; | |
253 | break; | |
254 | case EFI_TIMER_PERIODIC: | |
255 | case EFI_TIMER_RELATIVE: | |
256 | efi_event.trigger_next = timer_get_us() + (trigger32 / 10); | |
257 | break; | |
258 | default: | |
259 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
260 | } | |
261 | efi_event.trigger_type = type; | |
262 | efi_event.trigger_time = trigger_time; | |
263 | ||
264 | return EFI_EXIT(EFI_SUCCESS); | |
265 | } | |
266 | ||
267 | static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, | |
268 | void *event, unsigned long *index) | |
269 | { | |
270 | u64 now; | |
271 | ||
272 | EFI_ENTRY("%ld, %p, %p", num_events, event, index); | |
273 | ||
274 | now = timer_get_us(); | |
275 | while (now < efi_event.trigger_next) { } | |
276 | efi_timer_check(); | |
277 | ||
278 | return EFI_EXIT(EFI_SUCCESS); | |
279 | } | |
280 | ||
281 | static efi_status_t EFIAPI efi_signal_event(void *event) | |
282 | { | |
283 | EFI_ENTRY("%p", event); | |
284 | return EFI_EXIT(EFI_SUCCESS); | |
285 | } | |
286 | ||
287 | static efi_status_t EFIAPI efi_close_event(void *event) | |
288 | { | |
289 | EFI_ENTRY("%p", event); | |
290 | efi_event.trigger_next = -1ULL; | |
291 | return EFI_EXIT(EFI_SUCCESS); | |
292 | } | |
293 | ||
294 | static efi_status_t EFIAPI efi_check_event(void *event) | |
295 | { | |
296 | EFI_ENTRY("%p", event); | |
297 | return EFI_EXIT(EFI_NOT_READY); | |
298 | } | |
299 | ||
300 | static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, | |
301 | efi_guid_t *protocol, int protocol_interface_type, | |
302 | void *protocol_interface) | |
303 | { | |
304 | EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, | |
305 | protocol_interface); | |
306 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
307 | } | |
308 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, | |
309 | efi_guid_t *protocol, void *old_interface, | |
310 | void *new_interface) | |
311 | { | |
312 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, | |
313 | new_interface); | |
314 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
315 | } | |
316 | ||
317 | static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, | |
318 | efi_guid_t *protocol, void *protocol_interface) | |
319 | { | |
320 | EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); | |
321 | return EFI_EXIT(EFI_NOT_FOUND); | |
322 | } | |
323 | ||
324 | static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, | |
325 | void *event, | |
326 | void **registration) | |
327 | { | |
328 | EFI_ENTRY("%p, %p, %p", protocol, event, registration); | |
329 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
330 | } | |
331 | ||
332 | static int efi_search(enum efi_locate_search_type search_type, | |
333 | efi_guid_t *protocol, void *search_key, | |
334 | struct efi_object *efiobj) | |
335 | { | |
336 | int i; | |
337 | ||
338 | switch (search_type) { | |
339 | case all_handles: | |
340 | return 0; | |
341 | case by_register_notify: | |
342 | return -1; | |
343 | case by_protocol: | |
344 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
345 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
346 | if (guid && !guidcmp(guid, protocol)) | |
347 | return 0; | |
348 | } | |
349 | return -1; | |
350 | } | |
351 | ||
352 | return -1; | |
353 | } | |
354 | ||
355 | static efi_status_t EFIAPI efi_locate_handle( | |
356 | enum efi_locate_search_type search_type, | |
357 | efi_guid_t *protocol, void *search_key, | |
358 | unsigned long *buffer_size, efi_handle_t *buffer) | |
359 | { | |
360 | struct list_head *lhandle; | |
361 | unsigned long size = 0; | |
362 | ||
363 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
364 | buffer_size, buffer); | |
365 | ||
366 | /* Count how much space we need */ | |
367 | list_for_each(lhandle, &efi_obj_list) { | |
368 | struct efi_object *efiobj; | |
369 | efiobj = list_entry(lhandle, struct efi_object, link); | |
370 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
371 | size += sizeof(void*); | |
372 | } | |
373 | } | |
374 | ||
375 | if (*buffer_size < size) { | |
376 | *buffer_size = size; | |
377 | return EFI_EXIT(EFI_BUFFER_TOO_SMALL); | |
378 | } | |
379 | ||
380 | /* Then fill the array */ | |
381 | list_for_each(lhandle, &efi_obj_list) { | |
382 | struct efi_object *efiobj; | |
383 | efiobj = list_entry(lhandle, struct efi_object, link); | |
384 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
385 | *(buffer++) = efiobj->handle; | |
386 | } | |
387 | } | |
388 | ||
389 | *buffer_size = size; | |
390 | return EFI_EXIT(EFI_SUCCESS); | |
391 | } | |
392 | ||
393 | static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, | |
394 | struct efi_device_path **device_path, | |
395 | efi_handle_t *device) | |
396 | { | |
397 | EFI_ENTRY("%p, %p, %p", protocol, device_path, device); | |
398 | return EFI_EXIT(EFI_NOT_FOUND); | |
399 | } | |
400 | ||
488bf12d | 401 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) |
bee91169 AG |
402 | { |
403 | int i; | |
404 | ||
bee91169 AG |
405 | /* Check for guid override */ |
406 | for (i = 0; i < systab.nr_tables; i++) { | |
407 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
408 | efi_conf_table[i].table = table; | |
488bf12d | 409 | return EFI_SUCCESS; |
bee91169 AG |
410 | } |
411 | } | |
412 | ||
413 | /* No override, check for overflow */ | |
414 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
488bf12d | 415 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
416 | |
417 | /* Add a new entry */ | |
418 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
419 | efi_conf_table[i].table = table; | |
aba5e919 | 420 | systab.nr_tables = i + 1; |
bee91169 | 421 | |
488bf12d AG |
422 | return EFI_SUCCESS; |
423 | } | |
424 | ||
425 | static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, | |
426 | void *table) | |
427 | { | |
428 | EFI_ENTRY("%p, %p", guid, table); | |
429 | return EFI_EXIT(efi_install_configuration_table(guid, table)); | |
bee91169 AG |
430 | } |
431 | ||
432 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, | |
433 | efi_handle_t parent_image, | |
434 | struct efi_device_path *file_path, | |
435 | void *source_buffer, | |
436 | unsigned long source_size, | |
437 | efi_handle_t *image_handle) | |
438 | { | |
439 | static struct efi_object loaded_image_info_obj = { | |
440 | .protocols = { | |
441 | { | |
442 | .guid = &efi_guid_loaded_image, | |
443 | .open = &efi_return_handle, | |
444 | }, | |
445 | }, | |
446 | }; | |
447 | struct efi_loaded_image *info; | |
448 | struct efi_object *obj; | |
449 | ||
450 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
451 | file_path, source_buffer, source_size, image_handle); | |
452 | info = malloc(sizeof(*info)); | |
453 | obj = malloc(sizeof(loaded_image_info_obj)); | |
454 | memset(info, 0, sizeof(*info)); | |
455 | memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); | |
456 | obj->handle = info; | |
457 | info->file_path = file_path; | |
458 | info->reserved = efi_load_pe(source_buffer, info); | |
459 | if (!info->reserved) { | |
460 | free(info); | |
461 | free(obj); | |
462 | return EFI_EXIT(EFI_UNSUPPORTED); | |
463 | } | |
464 | ||
465 | *image_handle = info; | |
466 | list_add_tail(&obj->link, &efi_obj_list); | |
467 | ||
468 | return EFI_EXIT(EFI_SUCCESS); | |
469 | } | |
470 | ||
471 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, | |
472 | unsigned long *exit_data_size, | |
473 | s16 **exit_data) | |
474 | { | |
475 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
476 | struct efi_loaded_image *info = image_handle; | |
477 | ||
478 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
479 | entry = info->reserved; | |
480 | ||
481 | efi_is_direct_boot = false; | |
482 | ||
483 | /* call the image! */ | |
a86aeaf2 AG |
484 | if (setjmp(&info->exit_jmp)) { |
485 | /* We returned from the child image */ | |
486 | return EFI_EXIT(info->exit_status); | |
487 | } | |
488 | ||
bee91169 AG |
489 | entry(image_handle, &systab); |
490 | ||
491 | /* Should usually never get here */ | |
492 | return EFI_EXIT(EFI_SUCCESS); | |
493 | } | |
494 | ||
a86aeaf2 AG |
495 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
496 | efi_status_t exit_status, unsigned long exit_data_size, | |
497 | int16_t *exit_data) | |
bee91169 | 498 | { |
a86aeaf2 AG |
499 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
500 | ||
bee91169 AG |
501 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
502 | exit_data_size, exit_data); | |
a86aeaf2 AG |
503 | |
504 | loaded_image_info->exit_status = exit_status; | |
692fcdd8 | 505 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
506 | |
507 | panic("EFI application exited"); | |
bee91169 AG |
508 | } |
509 | ||
510 | static struct efi_object *efi_search_obj(void *handle) | |
511 | { | |
512 | struct list_head *lhandle; | |
513 | ||
514 | list_for_each(lhandle, &efi_obj_list) { | |
515 | struct efi_object *efiobj; | |
516 | efiobj = list_entry(lhandle, struct efi_object, link); | |
517 | if (efiobj->handle == handle) | |
518 | return efiobj; | |
519 | } | |
520 | ||
521 | return NULL; | |
522 | } | |
523 | ||
524 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) | |
525 | { | |
526 | struct efi_object *efiobj; | |
527 | ||
528 | EFI_ENTRY("%p", image_handle); | |
529 | efiobj = efi_search_obj(image_handle); | |
530 | if (efiobj) | |
531 | list_del(&efiobj->link); | |
532 | ||
533 | return EFI_EXIT(EFI_SUCCESS); | |
534 | } | |
535 | ||
536 | static void efi_exit_caches(void) | |
537 | { | |
538 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
539 | /* | |
540 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
541 | * a zImage, but does not know of all cache layers. Give it a hand. | |
542 | */ | |
543 | if (efi_is_direct_boot) | |
544 | cleanup_before_linux(); | |
545 | #endif | |
546 | } | |
547 | ||
548 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, | |
549 | unsigned long map_key) | |
550 | { | |
551 | EFI_ENTRY("%p, %ld", image_handle, map_key); | |
552 | ||
b7b8410a AG |
553 | board_quiesce_devices(); |
554 | ||
bee91169 AG |
555 | /* Fix up caches for EFI payloads if necessary */ |
556 | efi_exit_caches(); | |
557 | ||
558 | /* This stops all lingering devices */ | |
559 | bootm_disable_interrupts(); | |
560 | ||
561 | /* Give the payload some time to boot */ | |
562 | WATCHDOG_RESET(); | |
563 | ||
564 | return EFI_EXIT(EFI_SUCCESS); | |
565 | } | |
566 | ||
567 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) | |
568 | { | |
569 | static uint64_t mono = 0; | |
570 | EFI_ENTRY("%p", count); | |
571 | *count = mono++; | |
572 | return EFI_EXIT(EFI_SUCCESS); | |
573 | } | |
574 | ||
575 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) | |
576 | { | |
577 | EFI_ENTRY("%ld", microseconds); | |
578 | udelay(microseconds); | |
579 | return EFI_EXIT(EFI_SUCCESS); | |
580 | } | |
581 | ||
582 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, | |
583 | uint64_t watchdog_code, | |
584 | unsigned long data_size, | |
585 | uint16_t *watchdog_data) | |
586 | { | |
587 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
588 | data_size, watchdog_data); | |
589 | return EFI_EXIT(efi_unsupported(__func__)); | |
590 | } | |
591 | ||
592 | static efi_status_t EFIAPI efi_connect_controller( | |
593 | efi_handle_t controller_handle, | |
594 | efi_handle_t *driver_image_handle, | |
595 | struct efi_device_path *remain_device_path, | |
596 | bool recursive) | |
597 | { | |
598 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
599 | remain_device_path, recursive); | |
600 | return EFI_EXIT(EFI_NOT_FOUND); | |
601 | } | |
602 | ||
603 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, | |
604 | void *driver_image_handle, | |
605 | void *child_handle) | |
606 | { | |
607 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
608 | child_handle); | |
609 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
610 | } | |
611 | ||
612 | static efi_status_t EFIAPI efi_close_protocol(void *handle, | |
613 | efi_guid_t *protocol, | |
614 | void *agent_handle, | |
615 | void *controller_handle) | |
616 | { | |
617 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, | |
618 | controller_handle); | |
619 | return EFI_EXIT(EFI_NOT_FOUND); | |
620 | } | |
621 | ||
622 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, | |
623 | efi_guid_t *protocol, | |
624 | struct efi_open_protocol_info_entry **entry_buffer, | |
625 | unsigned long *entry_count) | |
626 | { | |
627 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, | |
628 | entry_count); | |
629 | return EFI_EXIT(EFI_NOT_FOUND); | |
630 | } | |
631 | ||
632 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, | |
633 | efi_guid_t ***protocol_buffer, | |
634 | unsigned long *protocol_buffer_count) | |
635 | { | |
636 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, | |
637 | protocol_buffer_count); | |
638 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
639 | } | |
640 | ||
641 | static efi_status_t EFIAPI efi_locate_handle_buffer( | |
642 | enum efi_locate_search_type search_type, | |
643 | efi_guid_t *protocol, void *search_key, | |
644 | unsigned long *no_handles, efi_handle_t **buffer) | |
645 | { | |
646 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
647 | no_handles, buffer); | |
648 | return EFI_EXIT(EFI_NOT_FOUND); | |
649 | } | |
650 | ||
651 | static struct efi_class_map efi_class_maps[] = { | |
652 | { | |
653 | .guid = &efi_guid_console_control, | |
654 | .interface = &efi_console_control | |
655 | }, | |
656 | }; | |
657 | ||
658 | static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, | |
659 | void *registration, | |
660 | void **protocol_interface) | |
661 | { | |
662 | int i; | |
663 | ||
664 | EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); | |
665 | for (i = 0; i < ARRAY_SIZE(efi_class_maps); i++) { | |
666 | struct efi_class_map *curmap = &efi_class_maps[i]; | |
667 | if (!guidcmp(protocol, curmap->guid)) { | |
668 | *protocol_interface = (void*)curmap->interface; | |
669 | return EFI_EXIT(EFI_SUCCESS); | |
670 | } | |
671 | } | |
672 | ||
673 | return EFI_EXIT(EFI_NOT_FOUND); | |
674 | } | |
675 | ||
676 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( | |
677 | void **handle, ...) | |
678 | { | |
679 | EFI_ENTRY("%p", handle); | |
680 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
681 | } | |
682 | ||
683 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( | |
684 | void *handle, ...) | |
685 | { | |
686 | EFI_ENTRY("%p", handle); | |
687 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
688 | } | |
689 | ||
690 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, | |
691 | unsigned long data_size, | |
692 | uint32_t *crc32_p) | |
693 | { | |
694 | EFI_ENTRY("%p, %ld", data, data_size); | |
695 | *crc32_p = crc32(0, data, data_size); | |
696 | return EFI_EXIT(EFI_SUCCESS); | |
697 | } | |
698 | ||
699 | static void EFIAPI efi_copy_mem(void *destination, void *source, | |
700 | unsigned long length) | |
701 | { | |
702 | EFI_ENTRY("%p, %p, %ld", destination, source, length); | |
703 | memcpy(destination, source, length); | |
704 | } | |
705 | ||
706 | static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) | |
707 | { | |
708 | EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); | |
709 | memset(buffer, value, size); | |
710 | } | |
711 | ||
712 | static efi_status_t EFIAPI efi_open_protocol( | |
713 | void *handle, efi_guid_t *protocol, | |
714 | void **protocol_interface, void *agent_handle, | |
715 | void *controller_handle, uint32_t attributes) | |
716 | { | |
717 | struct list_head *lhandle; | |
718 | int i; | |
719 | efi_status_t r = EFI_UNSUPPORTED; | |
720 | ||
721 | EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, | |
722 | protocol_interface, agent_handle, controller_handle, | |
723 | attributes); | |
724 | list_for_each(lhandle, &efi_obj_list) { | |
725 | struct efi_object *efiobj; | |
726 | efiobj = list_entry(lhandle, struct efi_object, link); | |
727 | ||
728 | if (efiobj->handle != handle) | |
729 | continue; | |
730 | ||
731 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
732 | struct efi_handler *handler = &efiobj->protocols[i]; | |
733 | const efi_guid_t *hprotocol = handler->guid; | |
734 | if (!hprotocol) | |
735 | break; | |
736 | if (!guidcmp(hprotocol, protocol)) { | |
737 | r = handler->open(handle, protocol, | |
738 | protocol_interface, agent_handle, | |
739 | controller_handle, attributes); | |
740 | goto out; | |
741 | } | |
742 | } | |
743 | } | |
744 | ||
745 | out: | |
746 | return EFI_EXIT(r); | |
747 | } | |
748 | ||
749 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, | |
750 | efi_guid_t *protocol, | |
751 | void **protocol_interface) | |
752 | { | |
bee91169 AG |
753 | return efi_open_protocol(handle, protocol, protocol_interface, |
754 | NULL, NULL, 0); | |
755 | } | |
756 | ||
757 | static const struct efi_boot_services efi_boot_services = { | |
758 | .hdr = { | |
759 | .headersize = sizeof(struct efi_table_hdr), | |
760 | }, | |
761 | .raise_tpl = efi_raise_tpl, | |
762 | .restore_tpl = efi_restore_tpl, | |
763 | .allocate_pages = efi_allocate_pages_ext, | |
764 | .free_pages = efi_free_pages_ext, | |
765 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 766 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 767 | .free_pool = efi_free_pool_ext, |
bee91169 AG |
768 | .create_event = efi_create_event, |
769 | .set_timer = efi_set_timer, | |
770 | .wait_for_event = efi_wait_for_event, | |
771 | .signal_event = efi_signal_event, | |
772 | .close_event = efi_close_event, | |
773 | .check_event = efi_check_event, | |
774 | .install_protocol_interface = efi_install_protocol_interface, | |
775 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, | |
776 | .uninstall_protocol_interface = efi_uninstall_protocol_interface, | |
777 | .handle_protocol = efi_handle_protocol, | |
778 | .reserved = NULL, | |
779 | .register_protocol_notify = efi_register_protocol_notify, | |
780 | .locate_handle = efi_locate_handle, | |
781 | .locate_device_path = efi_locate_device_path, | |
488bf12d | 782 | .install_configuration_table = efi_install_configuration_table_ext, |
bee91169 AG |
783 | .load_image = efi_load_image, |
784 | .start_image = efi_start_image, | |
a86aeaf2 | 785 | .exit = efi_exit, |
bee91169 AG |
786 | .unload_image = efi_unload_image, |
787 | .exit_boot_services = efi_exit_boot_services, | |
788 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
789 | .stall = efi_stall, | |
790 | .set_watchdog_timer = efi_set_watchdog_timer, | |
791 | .connect_controller = efi_connect_controller, | |
792 | .disconnect_controller = efi_disconnect_controller, | |
793 | .open_protocol = efi_open_protocol, | |
794 | .close_protocol = efi_close_protocol, | |
795 | .open_protocol_information = efi_open_protocol_information, | |
796 | .protocols_per_handle = efi_protocols_per_handle, | |
797 | .locate_handle_buffer = efi_locate_handle_buffer, | |
798 | .locate_protocol = efi_locate_protocol, | |
799 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
800 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
801 | .calculate_crc32 = efi_calculate_crc32, | |
802 | .copy_mem = efi_copy_mem, | |
803 | .set_mem = efi_set_mem, | |
804 | }; | |
805 | ||
806 | ||
3c63db9c | 807 | static uint16_t __efi_runtime_data firmware_vendor[] = |
bee91169 AG |
808 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
809 | ||
3c63db9c | 810 | struct efi_system_table __efi_runtime_data systab = { |
bee91169 AG |
811 | .hdr = { |
812 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
813 | .revision = 0x20005, /* 2.5 */ | |
814 | .headersize = sizeof(struct efi_table_hdr), | |
815 | }, | |
816 | .fw_vendor = (long)firmware_vendor, | |
817 | .con_in = (void*)&efi_con_in, | |
818 | .con_out = (void*)&efi_con_out, | |
819 | .std_err = (void*)&efi_con_out, | |
820 | .runtime = (void*)&efi_runtime_services, | |
821 | .boottime = (void*)&efi_boot_services, | |
822 | .nr_tables = 0, | |
823 | .tables = (void*)efi_conf_table, | |
824 | }; |