]>
Commit | Line | Data |
---|---|---|
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 | 9 | #include <common.h> |
7d963323 | 10 | #include <div64.h> |
bee91169 | 11 | #include <efi_loader.h> |
ad644e7c | 12 | #include <environment.h> |
bee91169 AG |
13 | #include <malloc.h> |
14 | #include <asm/global_data.h> | |
15 | #include <libfdt_env.h> | |
16 | #include <u-boot/crc.h> | |
17 | #include <bootm.h> | |
18 | #include <inttypes.h> | |
19 | #include <watchdog.h> | |
20 | ||
21 | DECLARE_GLOBAL_DATA_PTR; | |
22 | ||
32f4b2f8 | 23 | /* Task priority level */ |
152cade3 | 24 | static efi_uintn_t efi_tpl = TPL_APPLICATION; |
32f4b2f8 | 25 | |
bee91169 AG |
26 | /* This list contains all the EFI objects our payload has access to */ |
27 | LIST_HEAD(efi_obj_list); | |
28 | ||
29 | /* | |
30 | * If we're running on nasty systems (32bit ARM booting into non-EFI Linux) | |
31 | * we need to do trickery with caches. Since we don't want to break the EFI | |
32 | * aware boot path, only apply hacks when loading exiting directly (breaking | |
33 | * direct Linux EFI booting along the way - oh well). | |
34 | */ | |
35 | static bool efi_is_direct_boot = true; | |
36 | ||
37 | /* | |
38 | * EFI can pass arbitrary additional "tables" containing vendor specific | |
39 | * information to the payload. One such table is the FDT table which contains | |
40 | * a pointer to a flattened device tree blob. | |
41 | * | |
42 | * In most cases we want to pass an FDT to the payload, so reserve one slot of | |
43 | * config table space for it. The pointer gets populated by do_bootefi_exec(). | |
44 | */ | |
3c63db9c | 45 | static struct efi_configuration_table __efi_runtime_data efi_conf_table[2]; |
bee91169 | 46 | |
65e4c0b1 | 47 | #ifdef CONFIG_ARM |
bee91169 AG |
48 | /* |
49 | * The "gd" pointer lives in a register on ARM and AArch64 that we declare | |
50 | * fixed when compiling U-Boot. However, the payload does not know about that | |
51 | * restriction so we need to manually swap its and our view of that register on | |
52 | * EFI callback entry/exit. | |
53 | */ | |
54 | static volatile void *efi_gd, *app_gd; | |
65e4c0b1 | 55 | #endif |
bee91169 | 56 | |
c160d2f5 | 57 | static int entry_count; |
af65db85 | 58 | static int nesting_level; |
c160d2f5 RC |
59 | |
60 | /* Called on every callback entry */ | |
61 | int __efi_entry_check(void) | |
62 | { | |
63 | int ret = entry_count++ == 0; | |
64 | #ifdef CONFIG_ARM | |
65 | assert(efi_gd); | |
66 | app_gd = gd; | |
67 | gd = efi_gd; | |
68 | #endif | |
69 | return ret; | |
70 | } | |
71 | ||
72 | /* Called on every callback exit */ | |
73 | int __efi_exit_check(void) | |
74 | { | |
75 | int ret = --entry_count == 0; | |
76 | #ifdef CONFIG_ARM | |
77 | gd = app_gd; | |
78 | #endif | |
79 | return ret; | |
80 | } | |
81 | ||
bee91169 AG |
82 | /* Called from do_bootefi_exec() */ |
83 | void efi_save_gd(void) | |
84 | { | |
65e4c0b1 | 85 | #ifdef CONFIG_ARM |
bee91169 | 86 | efi_gd = gd; |
65e4c0b1 | 87 | #endif |
bee91169 AG |
88 | } |
89 | ||
c160d2f5 RC |
90 | /* |
91 | * Special case handler for error/abort that just forces things back | |
92 | * to u-boot world so we can dump out an abort msg, without any care | |
93 | * about returning back to UEFI world. | |
94 | */ | |
bee91169 AG |
95 | void efi_restore_gd(void) |
96 | { | |
65e4c0b1 | 97 | #ifdef CONFIG_ARM |
bee91169 AG |
98 | /* Only restore if we're already in EFI context */ |
99 | if (!efi_gd) | |
100 | return; | |
bee91169 | 101 | gd = efi_gd; |
65e4c0b1 | 102 | #endif |
bee91169 AG |
103 | } |
104 | ||
af65db85 RC |
105 | /* |
106 | * Two spaces per indent level, maxing out at 10.. which ought to be | |
107 | * enough for anyone ;-) | |
108 | */ | |
109 | static const char *indent_string(int level) | |
110 | { | |
111 | const char *indent = " "; | |
112 | const int max = strlen(indent); | |
113 | level = min(max, level * 2); | |
114 | return &indent[max - level]; | |
115 | } | |
116 | ||
ae0bd3a9 HS |
117 | const char *__efi_nesting(void) |
118 | { | |
119 | return indent_string(nesting_level); | |
120 | } | |
121 | ||
af65db85 RC |
122 | const char *__efi_nesting_inc(void) |
123 | { | |
124 | return indent_string(nesting_level++); | |
125 | } | |
126 | ||
127 | const char *__efi_nesting_dec(void) | |
128 | { | |
129 | return indent_string(--nesting_level); | |
130 | } | |
131 | ||
332468f7 HS |
132 | /* |
133 | * Queue an EFI event. | |
134 | * | |
135 | * This function queues the notification function of the event for future | |
136 | * execution. | |
137 | * | |
138 | * The notification function is called if the task priority level of the | |
139 | * event is higher than the current task priority level. | |
140 | * | |
141 | * For the SignalEvent service see efi_signal_event_ext. | |
142 | * | |
143 | * @event event to signal | |
144 | */ | |
91be9a77 | 145 | void efi_signal_event(struct efi_event *event) |
c6841592 | 146 | { |
ca62a4f5 | 147 | if (event->notify_function) { |
e190e897 | 148 | event->is_queued = true; |
32f4b2f8 HS |
149 | /* Check TPL */ |
150 | if (efi_tpl >= event->notify_tpl) | |
151 | return; | |
ea630ce9 HS |
152 | EFI_CALL_VOID(event->notify_function(event, |
153 | event->notify_context)); | |
c6841592 | 154 | } |
e190e897 | 155 | event->is_queued = false; |
c6841592 | 156 | } |
157 | ||
332468f7 HS |
158 | /* |
159 | * Raise the task priority level. | |
160 | * | |
161 | * This function implements the RaiseTpl service. | |
162 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
163 | * for details. | |
164 | * | |
165 | * @new_tpl new value of the task priority level | |
166 | * @return old value of the task priority level | |
167 | */ | |
152cade3 | 168 | static unsigned long EFIAPI efi_raise_tpl(efi_uintn_t new_tpl) |
bee91169 | 169 | { |
152cade3 | 170 | efi_uintn_t old_tpl = efi_tpl; |
32f4b2f8 | 171 | |
503f2695 | 172 | EFI_ENTRY("0x%zx", new_tpl); |
32f4b2f8 HS |
173 | |
174 | if (new_tpl < efi_tpl) | |
175 | debug("WARNING: new_tpl < current_tpl in %s\n", __func__); | |
176 | efi_tpl = new_tpl; | |
177 | if (efi_tpl > TPL_HIGH_LEVEL) | |
178 | efi_tpl = TPL_HIGH_LEVEL; | |
179 | ||
180 | EFI_EXIT(EFI_SUCCESS); | |
181 | return old_tpl; | |
bee91169 AG |
182 | } |
183 | ||
332468f7 HS |
184 | /* |
185 | * Lower the task priority level. | |
186 | * | |
187 | * This function implements the RestoreTpl service. | |
188 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
189 | * for details. | |
190 | * | |
191 | * @old_tpl value of the task priority level to be restored | |
192 | */ | |
152cade3 | 193 | static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl) |
bee91169 | 194 | { |
503f2695 | 195 | EFI_ENTRY("0x%zx", old_tpl); |
32f4b2f8 HS |
196 | |
197 | if (old_tpl > efi_tpl) | |
198 | debug("WARNING: old_tpl > current_tpl in %s\n", __func__); | |
199 | efi_tpl = old_tpl; | |
200 | if (efi_tpl > TPL_HIGH_LEVEL) | |
201 | efi_tpl = TPL_HIGH_LEVEL; | |
202 | ||
203 | EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
204 | } |
205 | ||
332468f7 HS |
206 | /* |
207 | * Allocate memory pages. | |
208 | * | |
209 | * This function implements the AllocatePages service. | |
210 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
211 | * for details. | |
212 | * | |
213 | * @type type of allocation to be performed | |
214 | * @memory_type usage type of the allocated memory | |
215 | * @pages number of pages to be allocated | |
216 | * @memory allocated memory | |
217 | * @return status code | |
218 | */ | |
6e0bf8d8 | 219 | static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, |
f5a2a938 | 220 | efi_uintn_t pages, |
6e0bf8d8 | 221 | uint64_t *memory) |
bee91169 AG |
222 | { |
223 | efi_status_t r; | |
224 | ||
f5a2a938 | 225 | EFI_ENTRY("%d, %d, 0x%zx, %p", type, memory_type, pages, memory); |
bee91169 AG |
226 | r = efi_allocate_pages(type, memory_type, pages, memory); |
227 | return EFI_EXIT(r); | |
228 | } | |
229 | ||
332468f7 HS |
230 | /* |
231 | * Free memory pages. | |
232 | * | |
233 | * This function implements the FreePages service. | |
234 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
235 | * for details. | |
236 | * | |
237 | * @memory start of the memory area to be freed | |
238 | * @pages number of pages to be freed | |
239 | * @return status code | |
240 | */ | |
6e0bf8d8 | 241 | static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, |
f5a2a938 | 242 | efi_uintn_t pages) |
bee91169 AG |
243 | { |
244 | efi_status_t r; | |
245 | ||
f5a2a938 | 246 | EFI_ENTRY("%"PRIx64", 0x%zx", memory, pages); |
bee91169 AG |
247 | r = efi_free_pages(memory, pages); |
248 | return EFI_EXIT(r); | |
249 | } | |
250 | ||
332468f7 HS |
251 | /* |
252 | * Get map describing memory usage. | |
253 | * | |
254 | * This function implements the GetMemoryMap service. | |
255 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
256 | * for details. | |
257 | * | |
258 | * @memory_map_size on entry the size, in bytes, of the memory map buffer, | |
259 | * on exit the size of the copied memory map | |
260 | * @memory_map buffer to which the memory map is written | |
261 | * @map_key key for the memory map | |
262 | * @descriptor_size size of an individual memory descriptor | |
263 | * @descriptor_version version number of the memory descriptor structure | |
264 | * @return status code | |
265 | */ | |
6e0bf8d8 | 266 | static efi_status_t EFIAPI efi_get_memory_map_ext( |
f5a2a938 | 267 | efi_uintn_t *memory_map_size, |
6e0bf8d8 | 268 | struct efi_mem_desc *memory_map, |
f5a2a938 HS |
269 | efi_uintn_t *map_key, |
270 | efi_uintn_t *descriptor_size, | |
6e0bf8d8 | 271 | uint32_t *descriptor_version) |
bee91169 AG |
272 | { |
273 | efi_status_t r; | |
274 | ||
275 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
276 | map_key, descriptor_size, descriptor_version); | |
277 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
278 | descriptor_size, descriptor_version); | |
279 | return EFI_EXIT(r); | |
280 | } | |
281 | ||
332468f7 HS |
282 | /* |
283 | * Allocate memory from pool. | |
284 | * | |
285 | * This function implements the AllocatePool service. | |
286 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
287 | * for details. | |
288 | * | |
289 | * @pool_type type of the pool from which memory is to be allocated | |
290 | * @size number of bytes to be allocated | |
291 | * @buffer allocated memory | |
292 | * @return status code | |
293 | */ | |
ead1274b | 294 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
f5a2a938 | 295 | efi_uintn_t size, |
ead1274b | 296 | void **buffer) |
bee91169 | 297 | { |
1cd29f0a AG |
298 | efi_status_t r; |
299 | ||
f5a2a938 | 300 | EFI_ENTRY("%d, %zd, %p", pool_type, size, buffer); |
ead1274b | 301 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 302 | return EFI_EXIT(r); |
bee91169 AG |
303 | } |
304 | ||
332468f7 HS |
305 | /* |
306 | * Free memory from pool. | |
307 | * | |
308 | * This function implements the FreePool service. | |
309 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
310 | * for details. | |
311 | * | |
312 | * @buffer start of memory to be freed | |
313 | * @return status code | |
314 | */ | |
42417bc8 | 315 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 316 | { |
1cd29f0a AG |
317 | efi_status_t r; |
318 | ||
319 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 320 | r = efi_free_pool(buffer); |
1cd29f0a | 321 | return EFI_EXIT(r); |
bee91169 AG |
322 | } |
323 | ||
2edab5e2 HS |
324 | /* |
325 | * Create handle. | |
326 | * | |
327 | * @handle new handle | |
328 | * @return status code | |
329 | */ | |
330 | efi_status_t efi_create_handle(void **handle) | |
3cc6e3fe HS |
331 | { |
332 | struct efi_object *obj; | |
333 | efi_status_t r; | |
334 | ||
335 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
336 | sizeof(struct efi_object), | |
337 | (void **)&obj); | |
338 | if (r != EFI_SUCCESS) | |
339 | return r; | |
340 | memset(obj, 0, sizeof(struct efi_object)); | |
341 | obj->handle = obj; | |
342 | list_add_tail(&obj->link, &efi_obj_list); | |
343 | *handle = obj; | |
344 | return r; | |
345 | } | |
346 | ||
bee91169 | 347 | /* |
c6841592 | 348 | * Our event capabilities are very limited. Only a small limited |
349 | * number of events is allowed to coexist. | |
bee91169 | 350 | */ |
c6841592 | 351 | static struct efi_event efi_events[16]; |
bee91169 | 352 | |
332468f7 HS |
353 | /* |
354 | * Create an event. | |
355 | * | |
356 | * This function is used inside U-Boot code to create an event. | |
357 | * | |
358 | * For the API function implementing the CreateEvent service see | |
359 | * efi_create_event_ext. | |
360 | * | |
361 | * @type type of the event to create | |
362 | * @notify_tpl task priority level of the event | |
363 | * @notify_function notification function of the event | |
364 | * @notify_context pointer passed to the notification function | |
365 | * @event created event | |
366 | * @return status code | |
367 | */ | |
152cade3 | 368 | efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, |
49deb455 | 369 | void (EFIAPI *notify_function) ( |
2fd945fe | 370 | struct efi_event *event, |
371 | void *context), | |
49deb455 | 372 | void *notify_context, struct efi_event **event) |
bee91169 | 373 | { |
c6841592 | 374 | int i; |
375 | ||
a95343b8 | 376 | if (event == NULL) |
49deb455 | 377 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
378 | |
379 | if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) | |
49deb455 | 380 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
381 | |
382 | if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && | |
383 | notify_function == NULL) | |
49deb455 | 384 | return EFI_INVALID_PARAMETER; |
a95343b8 | 385 | |
c6841592 | 386 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
387 | if (efi_events[i].type) | |
388 | continue; | |
389 | efi_events[i].type = type; | |
390 | efi_events[i].notify_tpl = notify_tpl; | |
391 | efi_events[i].notify_function = notify_function; | |
392 | efi_events[i].notify_context = notify_context; | |
393 | /* Disable timers on bootup */ | |
394 | efi_events[i].trigger_next = -1ULL; | |
e190e897 HS |
395 | efi_events[i].is_queued = false; |
396 | efi_events[i].is_signaled = false; | |
c6841592 | 397 | *event = &efi_events[i]; |
49deb455 | 398 | return EFI_SUCCESS; |
c6841592 | 399 | } |
49deb455 | 400 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
401 | } |
402 | ||
332468f7 HS |
403 | /* |
404 | * Create an event. | |
405 | * | |
406 | * This function implements the CreateEvent service. | |
407 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
408 | * for details. | |
409 | * | |
410 | * @type type of the event to create | |
411 | * @notify_tpl task priority level of the event | |
412 | * @notify_function notification function of the event | |
413 | * @notify_context pointer passed to the notification function | |
414 | * @event created event | |
415 | * @return status code | |
416 | */ | |
49deb455 | 417 | static efi_status_t EFIAPI efi_create_event_ext( |
152cade3 | 418 | uint32_t type, efi_uintn_t notify_tpl, |
49deb455 | 419 | void (EFIAPI *notify_function) ( |
420 | struct efi_event *event, | |
421 | void *context), | |
422 | void *notify_context, struct efi_event **event) | |
423 | { | |
424 | EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function, | |
425 | notify_context); | |
426 | return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function, | |
427 | notify_context, event)); | |
428 | } | |
429 | ||
430 | ||
bee91169 | 431 | /* |
332468f7 HS |
432 | * Check if a timer event has occurred or a queued notification function should |
433 | * be called. | |
434 | * | |
bee91169 | 435 | * Our timers have to work without interrupts, so we check whenever keyboard |
332468f7 | 436 | * input or disk accesses happen if enough time elapsed for them to fire. |
bee91169 AG |
437 | */ |
438 | void efi_timer_check(void) | |
439 | { | |
c6841592 | 440 | int i; |
bee91169 AG |
441 | u64 now = timer_get_us(); |
442 | ||
c6841592 | 443 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
ca62a4f5 HS |
444 | if (!efi_events[i].type) |
445 | continue; | |
e190e897 | 446 | if (efi_events[i].is_queued) |
ca62a4f5 HS |
447 | efi_signal_event(&efi_events[i]); |
448 | if (!(efi_events[i].type & EVT_TIMER) || | |
c6841592 | 449 | now < efi_events[i].trigger_next) |
450 | continue; | |
ca62a4f5 HS |
451 | switch (efi_events[i].trigger_type) { |
452 | case EFI_TIMER_RELATIVE: | |
453 | efi_events[i].trigger_type = EFI_TIMER_STOP; | |
454 | break; | |
455 | case EFI_TIMER_PERIODIC: | |
c6841592 | 456 | efi_events[i].trigger_next += |
8787b02e | 457 | efi_events[i].trigger_time; |
ca62a4f5 HS |
458 | break; |
459 | default: | |
460 | continue; | |
c6841592 | 461 | } |
e190e897 | 462 | efi_events[i].is_signaled = true; |
c6841592 | 463 | efi_signal_event(&efi_events[i]); |
bee91169 | 464 | } |
bee91169 AG |
465 | WATCHDOG_RESET(); |
466 | } | |
467 | ||
332468f7 HS |
468 | /* |
469 | * Set the trigger time for a timer event or stop the event. | |
470 | * | |
471 | * This is the function for internal usage in U-Boot. For the API function | |
472 | * implementing the SetTimer service see efi_set_timer_ext. | |
473 | * | |
474 | * @event event for which the timer is set | |
475 | * @type type of the timer | |
476 | * @trigger_time trigger period in multiples of 100ns | |
477 | * @return status code | |
478 | */ | |
b521d29e | 479 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 480 | uint64_t trigger_time) |
bee91169 | 481 | { |
c6841592 | 482 | int i; |
bee91169 | 483 | |
8787b02e | 484 | /* |
485 | * The parameter defines a multiple of 100ns. | |
486 | * We use multiples of 1000ns. So divide by 10. | |
487 | */ | |
7d963323 | 488 | do_div(trigger_time, 10); |
bee91169 | 489 | |
c6841592 | 490 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
491 | if (event != &efi_events[i]) | |
492 | continue; | |
bee91169 | 493 | |
c6841592 | 494 | if (!(event->type & EVT_TIMER)) |
495 | break; | |
496 | switch (type) { | |
497 | case EFI_TIMER_STOP: | |
498 | event->trigger_next = -1ULL; | |
499 | break; | |
500 | case EFI_TIMER_PERIODIC: | |
501 | case EFI_TIMER_RELATIVE: | |
502 | event->trigger_next = | |
8787b02e | 503 | timer_get_us() + trigger_time; |
c6841592 | 504 | break; |
505 | default: | |
bfc72462 | 506 | return EFI_INVALID_PARAMETER; |
c6841592 | 507 | } |
508 | event->trigger_type = type; | |
509 | event->trigger_time = trigger_time; | |
e190e897 | 510 | event->is_signaled = false; |
bfc72462 | 511 | return EFI_SUCCESS; |
bee91169 | 512 | } |
bfc72462 | 513 | return EFI_INVALID_PARAMETER; |
514 | } | |
515 | ||
332468f7 HS |
516 | /* |
517 | * Set the trigger time for a timer event or stop the event. | |
518 | * | |
519 | * This function implements the SetTimer service. | |
520 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
521 | * for details. | |
522 | * | |
523 | * @event event for which the timer is set | |
524 | * @type type of the timer | |
525 | * @trigger_time trigger period in multiples of 100ns | |
526 | * @return status code | |
527 | */ | |
b521d29e | 528 | static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event, |
529 | enum efi_timer_delay type, | |
530 | uint64_t trigger_time) | |
bfc72462 | 531 | { |
532 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
533 | return EFI_EXIT(efi_set_timer(event, type, trigger_time)); | |
bee91169 AG |
534 | } |
535 | ||
332468f7 HS |
536 | /* |
537 | * Wait for events to be signaled. | |
538 | * | |
539 | * This function implements the WaitForEvent service. | |
540 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
541 | * for details. | |
542 | * | |
543 | * @num_events number of events to be waited for | |
544 | * @events events to be waited for | |
545 | * @index index of the event that was signaled | |
546 | * @return status code | |
547 | */ | |
f5a2a938 | 548 | static efi_status_t EFIAPI efi_wait_for_event(efi_uintn_t num_events, |
2fd945fe | 549 | struct efi_event **event, |
f5a2a938 | 550 | efi_uintn_t *index) |
bee91169 | 551 | { |
c6841592 | 552 | int i, j; |
bee91169 | 553 | |
f5a2a938 | 554 | EFI_ENTRY("%zd, %p, %p", num_events, event, index); |
bee91169 | 555 | |
c6841592 | 556 | /* Check parameters */ |
557 | if (!num_events || !event) | |
558 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
32f4b2f8 HS |
559 | /* Check TPL */ |
560 | if (efi_tpl != TPL_APPLICATION) | |
561 | return EFI_EXIT(EFI_UNSUPPORTED); | |
c6841592 | 562 | for (i = 0; i < num_events; ++i) { |
563 | for (j = 0; j < ARRAY_SIZE(efi_events); ++j) { | |
564 | if (event[i] == &efi_events[j]) | |
565 | goto known_event; | |
566 | } | |
567 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
568 | known_event: | |
569 | if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL) | |
570 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
e190e897 | 571 | if (!event[i]->is_signaled) |
ca62a4f5 | 572 | efi_signal_event(event[i]); |
c6841592 | 573 | } |
574 | ||
575 | /* Wait for signal */ | |
576 | for (;;) { | |
577 | for (i = 0; i < num_events; ++i) { | |
e190e897 | 578 | if (event[i]->is_signaled) |
c6841592 | 579 | goto out; |
580 | } | |
581 | /* Allow events to occur. */ | |
582 | efi_timer_check(); | |
583 | } | |
584 | ||
585 | out: | |
586 | /* | |
587 | * Reset the signal which is passed to the caller to allow periodic | |
588 | * events to occur. | |
589 | */ | |
e190e897 | 590 | event[i]->is_signaled = false; |
c6841592 | 591 | if (index) |
592 | *index = i; | |
bee91169 AG |
593 | |
594 | return EFI_EXIT(EFI_SUCCESS); | |
595 | } | |
596 | ||
332468f7 HS |
597 | /* |
598 | * Signal an EFI event. | |
599 | * | |
600 | * This function implements the SignalEvent service. | |
601 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
602 | * for details. | |
603 | * | |
604 | * This functions sets the signaled state of the event and queues the | |
605 | * notification function for execution. | |
606 | * | |
607 | * @event event to signal | |
10a08c4e | 608 | * @return status code |
332468f7 | 609 | */ |
c6841592 | 610 | static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event) |
bee91169 | 611 | { |
c6841592 | 612 | int i; |
613 | ||
bee91169 | 614 | EFI_ENTRY("%p", event); |
c6841592 | 615 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
616 | if (event != &efi_events[i]) | |
617 | continue; | |
e190e897 | 618 | if (event->is_signaled) |
ca62a4f5 | 619 | break; |
e190e897 | 620 | event->is_signaled = true; |
ca62a4f5 HS |
621 | if (event->type & EVT_NOTIFY_SIGNAL) |
622 | efi_signal_event(event); | |
c6841592 | 623 | break; |
624 | } | |
bee91169 AG |
625 | return EFI_EXIT(EFI_SUCCESS); |
626 | } | |
627 | ||
332468f7 HS |
628 | /* |
629 | * Close an EFI event. | |
630 | * | |
631 | * This function implements the CloseEvent service. | |
632 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
633 | * for details. | |
634 | * | |
635 | * @event event to close | |
636 | * @return status code | |
637 | */ | |
2fd945fe | 638 | static efi_status_t EFIAPI efi_close_event(struct efi_event *event) |
bee91169 | 639 | { |
c6841592 | 640 | int i; |
641 | ||
bee91169 | 642 | EFI_ENTRY("%p", event); |
c6841592 | 643 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
644 | if (event == &efi_events[i]) { | |
645 | event->type = 0; | |
646 | event->trigger_next = -1ULL; | |
e190e897 HS |
647 | event->is_queued = false; |
648 | event->is_signaled = false; | |
c6841592 | 649 | return EFI_EXIT(EFI_SUCCESS); |
650 | } | |
651 | } | |
652 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
653 | } |
654 | ||
332468f7 HS |
655 | /* |
656 | * Check if an event is signaled. | |
657 | * | |
658 | * This function implements the CheckEvent service. | |
659 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
660 | * for details. | |
661 | * | |
662 | * If an event is not signaled yet the notification function is queued. | |
663 | * | |
664 | * @event event to check | |
665 | * @return status code | |
666 | */ | |
2fd945fe | 667 | static efi_status_t EFIAPI efi_check_event(struct efi_event *event) |
bee91169 | 668 | { |
c6841592 | 669 | int i; |
670 | ||
bee91169 | 671 | EFI_ENTRY("%p", event); |
c6841592 | 672 | efi_timer_check(); |
673 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
674 | if (event != &efi_events[i]) | |
675 | continue; | |
676 | if (!event->type || event->type & EVT_NOTIFY_SIGNAL) | |
677 | break; | |
e190e897 | 678 | if (!event->is_signaled) |
ca62a4f5 | 679 | efi_signal_event(event); |
e190e897 | 680 | if (event->is_signaled) |
c6841592 | 681 | return EFI_EXIT(EFI_SUCCESS); |
682 | return EFI_EXIT(EFI_NOT_READY); | |
683 | } | |
684 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
685 | } |
686 | ||
7b9f8ad7 HS |
687 | /* |
688 | * Find the internal EFI object for a handle. | |
689 | * | |
690 | * @handle handle to find | |
691 | * @return EFI object | |
692 | */ | |
085d07cd | 693 | struct efi_object *efi_search_obj(const void *handle) |
7b9f8ad7 | 694 | { |
1b68153a | 695 | struct efi_object *efiobj; |
7b9f8ad7 | 696 | |
1b68153a | 697 | list_for_each_entry(efiobj, &efi_obj_list, link) { |
7b9f8ad7 HS |
698 | if (efiobj->handle == handle) |
699 | return efiobj; | |
700 | } | |
701 | ||
702 | return NULL; | |
703 | } | |
704 | ||
332468f7 HS |
705 | /* |
706 | * Install protocol interface. | |
707 | * | |
1760ef57 HS |
708 | * This function implements the InstallProtocolInterface service. |
709 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
710 | * for details. | |
332468f7 HS |
711 | * |
712 | * @handle handle on which the protocol shall be installed | |
713 | * @protocol GUID of the protocol to be installed | |
714 | * @protocol_interface_type type of the interface to be installed, | |
715 | * always EFI_NATIVE_INTERFACE | |
716 | * @protocol_interface interface of the protocol implementation | |
717 | * @return status code | |
718 | */ | |
1760ef57 HS |
719 | static efi_status_t EFIAPI efi_install_protocol_interface( |
720 | void **handle, const efi_guid_t *protocol, | |
721 | int protocol_interface_type, void *protocol_interface) | |
bee91169 | 722 | { |
e0549f8a | 723 | struct list_head *lhandle; |
724 | int i; | |
725 | efi_status_t r; | |
726 | ||
1760ef57 HS |
727 | EFI_ENTRY("%p, %pUl, %d, %p", handle, protocol, protocol_interface_type, |
728 | protocol_interface); | |
729 | ||
e0549f8a | 730 | if (!handle || !protocol || |
731 | protocol_interface_type != EFI_NATIVE_INTERFACE) { | |
732 | r = EFI_INVALID_PARAMETER; | |
733 | goto out; | |
734 | } | |
735 | ||
736 | /* Create new handle if requested. */ | |
737 | if (!*handle) { | |
3cc6e3fe HS |
738 | r = efi_create_handle(handle); |
739 | if (r != EFI_SUCCESS) | |
740 | goto out; | |
af1408e0 HS |
741 | debug("%sEFI: new handle %p\n", indent_string(nesting_level), |
742 | *handle); | |
743 | } else { | |
744 | debug("%sEFI: handle %p\n", indent_string(nesting_level), | |
745 | *handle); | |
e0549f8a | 746 | } |
747 | /* Find object. */ | |
748 | list_for_each(lhandle, &efi_obj_list) { | |
749 | struct efi_object *efiobj; | |
750 | efiobj = list_entry(lhandle, struct efi_object, link); | |
751 | ||
752 | if (efiobj->handle != *handle) | |
753 | continue; | |
754 | /* Check if protocol is already installed on the handle. */ | |
755 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
756 | struct efi_handler *handler = &efiobj->protocols[i]; | |
757 | ||
758 | if (!handler->guid) | |
759 | continue; | |
760 | if (!guidcmp(handler->guid, protocol)) { | |
761 | r = EFI_INVALID_PARAMETER; | |
762 | goto out; | |
763 | } | |
764 | } | |
765 | /* Install protocol in first empty slot. */ | |
766 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
767 | struct efi_handler *handler = &efiobj->protocols[i]; | |
768 | ||
769 | if (handler->guid) | |
770 | continue; | |
771 | ||
772 | handler->guid = protocol; | |
773 | handler->protocol_interface = protocol_interface; | |
774 | r = EFI_SUCCESS; | |
775 | goto out; | |
776 | } | |
777 | r = EFI_OUT_OF_RESOURCES; | |
778 | goto out; | |
779 | } | |
780 | r = EFI_INVALID_PARAMETER; | |
781 | out: | |
1760ef57 | 782 | return EFI_EXIT(r); |
bee91169 | 783 | } |
e0549f8a | 784 | |
332468f7 HS |
785 | /* |
786 | * Reinstall protocol interface. | |
787 | * | |
788 | * This function implements the ReinstallProtocolInterface service. | |
789 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
790 | * for details. | |
791 | * | |
792 | * @handle handle on which the protocol shall be | |
793 | * reinstalled | |
794 | * @protocol GUID of the protocol to be installed | |
795 | * @old_interface interface to be removed | |
796 | * @new_interface interface to be installed | |
797 | * @return status code | |
798 | */ | |
bee91169 | 799 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, |
5a9682d0 | 800 | const efi_guid_t *protocol, void *old_interface, |
bee91169 AG |
801 | void *new_interface) |
802 | { | |
778e6af8 | 803 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface, |
bee91169 AG |
804 | new_interface); |
805 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
806 | } | |
807 | ||
332468f7 HS |
808 | /* |
809 | * Uninstall protocol interface. | |
810 | * | |
cd534083 HS |
811 | * This function implements the UninstallProtocolInterface service. |
812 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
813 | * for details. | |
332468f7 HS |
814 | * |
815 | * @handle handle from which the protocol shall be removed | |
816 | * @protocol GUID of the protocol to be removed | |
817 | * @protocol_interface interface to be removed | |
818 | * @return status code | |
819 | */ | |
cd534083 HS |
820 | static efi_status_t EFIAPI efi_uninstall_protocol_interface( |
821 | void *handle, const efi_guid_t *protocol, | |
822 | void *protocol_interface) | |
bee91169 | 823 | { |
4b6ed0d7 | 824 | struct list_head *lhandle; |
825 | int i; | |
826 | efi_status_t r = EFI_NOT_FOUND; | |
827 | ||
cd534083 HS |
828 | EFI_ENTRY("%p, %pUl, %p", handle, protocol, protocol_interface); |
829 | ||
4b6ed0d7 | 830 | if (!handle || !protocol) { |
831 | r = EFI_INVALID_PARAMETER; | |
832 | goto out; | |
833 | } | |
834 | ||
835 | list_for_each(lhandle, &efi_obj_list) { | |
836 | struct efi_object *efiobj; | |
837 | efiobj = list_entry(lhandle, struct efi_object, link); | |
838 | ||
839 | if (efiobj->handle != handle) | |
840 | continue; | |
841 | ||
842 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
843 | struct efi_handler *handler = &efiobj->protocols[i]; | |
844 | const efi_guid_t *hprotocol = handler->guid; | |
845 | ||
846 | if (!hprotocol) | |
847 | continue; | |
848 | if (!guidcmp(hprotocol, protocol)) { | |
849 | if (handler->protocol_interface) { | |
850 | r = EFI_ACCESS_DENIED; | |
851 | } else { | |
852 | handler->guid = 0; | |
853 | r = EFI_SUCCESS; | |
854 | } | |
855 | goto out; | |
856 | } | |
857 | } | |
858 | } | |
859 | ||
860 | out: | |
cd534083 | 861 | return EFI_EXIT(r); |
bee91169 AG |
862 | } |
863 | ||
332468f7 HS |
864 | /* |
865 | * Register an event for notification when a protocol is installed. | |
866 | * | |
867 | * This function implements the RegisterProtocolNotify service. | |
868 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
869 | * for details. | |
870 | * | |
871 | * @protocol GUID of the protocol whose installation shall be | |
872 | * notified | |
873 | * @event event to be signaled upon installation of the protocol | |
874 | * @registration key for retrieving the registration information | |
875 | * @return status code | |
876 | */ | |
5a9682d0 HS |
877 | static efi_status_t EFIAPI efi_register_protocol_notify( |
878 | const efi_guid_t *protocol, | |
879 | struct efi_event *event, | |
880 | void **registration) | |
bee91169 | 881 | { |
778e6af8 | 882 | EFI_ENTRY("%pUl, %p, %p", protocol, event, registration); |
bee91169 AG |
883 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); |
884 | } | |
885 | ||
332468f7 HS |
886 | /* |
887 | * Determine if an EFI handle implements a protocol. | |
888 | * | |
889 | * See the documentation of the LocateHandle service in the UEFI specification. | |
890 | * | |
891 | * @search_type selection criterion | |
892 | * @protocol GUID of the protocol | |
893 | * @search_key registration key | |
894 | * @efiobj handle | |
895 | * @return 0 if the handle implements the protocol | |
896 | */ | |
bee91169 | 897 | static int efi_search(enum efi_locate_search_type search_type, |
5a9682d0 | 898 | const efi_guid_t *protocol, void *search_key, |
bee91169 AG |
899 | struct efi_object *efiobj) |
900 | { | |
901 | int i; | |
902 | ||
903 | switch (search_type) { | |
9f0770ff | 904 | case ALL_HANDLES: |
bee91169 | 905 | return 0; |
9f0770ff | 906 | case BY_REGISTER_NOTIFY: |
caf864e4 | 907 | /* RegisterProtocolNotify is not implemented yet */ |
bee91169 | 908 | return -1; |
9f0770ff | 909 | case BY_PROTOCOL: |
bee91169 AG |
910 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { |
911 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
912 | if (guid && !guidcmp(guid, protocol)) | |
913 | return 0; | |
914 | } | |
915 | return -1; | |
916 | } | |
917 | ||
918 | return -1; | |
919 | } | |
920 | ||
332468f7 HS |
921 | /* |
922 | * Locate handles implementing a protocol. | |
923 | * | |
924 | * This function is meant for U-Boot internal calls. For the API implementation | |
925 | * of the LocateHandle service see efi_locate_handle_ext. | |
926 | * | |
927 | * @search_type selection criterion | |
928 | * @protocol GUID of the protocol | |
929 | * @search_key registration key | |
930 | * @buffer_size size of the buffer to receive the handles in bytes | |
931 | * @buffer buffer to receive the relevant handles | |
932 | * @return status code | |
933 | */ | |
ebf199b9 | 934 | static efi_status_t efi_locate_handle( |
bee91169 | 935 | enum efi_locate_search_type search_type, |
5a9682d0 | 936 | const efi_guid_t *protocol, void *search_key, |
f5a2a938 | 937 | efi_uintn_t *buffer_size, efi_handle_t *buffer) |
bee91169 | 938 | { |
caf864e4 | 939 | struct efi_object *efiobj; |
f5a2a938 | 940 | efi_uintn_t size = 0; |
bee91169 | 941 | |
caf864e4 HS |
942 | /* Check parameters */ |
943 | switch (search_type) { | |
944 | case ALL_HANDLES: | |
945 | break; | |
946 | case BY_REGISTER_NOTIFY: | |
947 | if (!search_key) | |
948 | return EFI_INVALID_PARAMETER; | |
949 | /* RegisterProtocolNotify is not implemented yet */ | |
950 | return EFI_UNSUPPORTED; | |
951 | case BY_PROTOCOL: | |
952 | if (!protocol) | |
953 | return EFI_INVALID_PARAMETER; | |
954 | break; | |
955 | default: | |
956 | return EFI_INVALID_PARAMETER; | |
957 | } | |
958 | ||
959 | /* | |
960 | * efi_locate_handle_buffer uses this function for | |
961 | * the calculation of the necessary buffer size. | |
962 | * So do not require a buffer for buffersize == 0. | |
963 | */ | |
964 | if (!buffer_size || (*buffer_size && !buffer)) | |
965 | return EFI_INVALID_PARAMETER; | |
966 | ||
bee91169 | 967 | /* Count how much space we need */ |
caf864e4 HS |
968 | list_for_each_entry(efiobj, &efi_obj_list, link) { |
969 | if (!efi_search(search_type, protocol, search_key, efiobj)) | |
bee91169 | 970 | size += sizeof(void*); |
bee91169 AG |
971 | } |
972 | ||
973 | if (*buffer_size < size) { | |
974 | *buffer_size = size; | |
26329584 | 975 | return EFI_BUFFER_TOO_SMALL; |
bee91169 AG |
976 | } |
977 | ||
796a78cb RC |
978 | *buffer_size = size; |
979 | if (size == 0) | |
980 | return EFI_NOT_FOUND; | |
981 | ||
bee91169 | 982 | /* Then fill the array */ |
caf864e4 HS |
983 | list_for_each_entry(efiobj, &efi_obj_list, link) { |
984 | if (!efi_search(search_type, protocol, search_key, efiobj)) | |
985 | *buffer++ = efiobj->handle; | |
bee91169 AG |
986 | } |
987 | ||
26329584 | 988 | return EFI_SUCCESS; |
989 | } | |
990 | ||
332468f7 HS |
991 | /* |
992 | * Locate handles implementing a protocol. | |
993 | * | |
994 | * This function implements the LocateHandle service. | |
995 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
996 | * for details. | |
997 | * | |
998 | * @search_type selection criterion | |
999 | * @protocol GUID of the protocol | |
1000 | * @search_key registration key | |
1001 | * @buffer_size size of the buffer to receive the handles in bytes | |
1002 | * @buffer buffer to receive the relevant handles | |
1003 | * @return 0 if the handle implements the protocol | |
1004 | */ | |
26329584 | 1005 | static efi_status_t EFIAPI efi_locate_handle_ext( |
1006 | enum efi_locate_search_type search_type, | |
5a9682d0 | 1007 | const efi_guid_t *protocol, void *search_key, |
f5a2a938 | 1008 | efi_uintn_t *buffer_size, efi_handle_t *buffer) |
26329584 | 1009 | { |
778e6af8 | 1010 | EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key, |
26329584 | 1011 | buffer_size, buffer); |
1012 | ||
1013 | return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key, | |
1014 | buffer_size, buffer)); | |
bee91169 AG |
1015 | } |
1016 | ||
332468f7 HS |
1017 | /* |
1018 | * Get the device path and handle of an device implementing a protocol. | |
1019 | * | |
1020 | * This function implements the LocateDevicePath service. | |
1021 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1022 | * for details. | |
1023 | * | |
1024 | * @protocol GUID of the protocol | |
1025 | * @device_path device path | |
1026 | * @device handle of the device | |
1027 | * @return status code | |
1028 | */ | |
5a9682d0 HS |
1029 | static efi_status_t EFIAPI efi_locate_device_path( |
1030 | const efi_guid_t *protocol, | |
bee91169 AG |
1031 | struct efi_device_path **device_path, |
1032 | efi_handle_t *device) | |
1033 | { | |
b66c60dd RC |
1034 | struct efi_object *efiobj; |
1035 | ||
1036 | EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device); | |
1037 | ||
1038 | efiobj = efi_dp_find_obj(*device_path, device_path); | |
1039 | if (!efiobj) | |
1040 | return EFI_EXIT(EFI_NOT_FOUND); | |
1041 | ||
1042 | *device = efiobj->handle; | |
1043 | ||
1044 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
1045 | } |
1046 | ||
d98cdf6a AG |
1047 | /* Collapses configuration table entries, removing index i */ |
1048 | static void efi_remove_configuration_table(int i) | |
1049 | { | |
1050 | struct efi_configuration_table *this = &efi_conf_table[i]; | |
1051 | struct efi_configuration_table *next = &efi_conf_table[i+1]; | |
1052 | struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables]; | |
1053 | ||
1054 | memmove(this, next, (ulong)end - (ulong)next); | |
1055 | systab.nr_tables--; | |
1056 | } | |
1057 | ||
332468f7 HS |
1058 | /* |
1059 | * Adds, updates, or removes a configuration table. | |
1060 | * | |
1061 | * This function is used for internal calls. For the API implementation of the | |
1062 | * InstallConfigurationTable service see efi_install_configuration_table_ext. | |
1063 | * | |
1064 | * @guid GUID of the installed table | |
1065 | * @table table to be installed | |
1066 | * @return status code | |
1067 | */ | |
488bf12d | 1068 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) |
bee91169 AG |
1069 | { |
1070 | int i; | |
1071 | ||
bee91169 AG |
1072 | /* Check for guid override */ |
1073 | for (i = 0; i < systab.nr_tables; i++) { | |
1074 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
d98cdf6a AG |
1075 | if (table) |
1076 | efi_conf_table[i].table = table; | |
1077 | else | |
1078 | efi_remove_configuration_table(i); | |
488bf12d | 1079 | return EFI_SUCCESS; |
bee91169 AG |
1080 | } |
1081 | } | |
1082 | ||
d98cdf6a AG |
1083 | if (!table) |
1084 | return EFI_NOT_FOUND; | |
1085 | ||
bee91169 AG |
1086 | /* No override, check for overflow */ |
1087 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
488bf12d | 1088 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
1089 | |
1090 | /* Add a new entry */ | |
1091 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
1092 | efi_conf_table[i].table = table; | |
aba5e919 | 1093 | systab.nr_tables = i + 1; |
bee91169 | 1094 | |
488bf12d AG |
1095 | return EFI_SUCCESS; |
1096 | } | |
1097 | ||
332468f7 HS |
1098 | /* |
1099 | * Adds, updates, or removes a configuration table. | |
1100 | * | |
1101 | * This function implements the InstallConfigurationTable service. | |
1102 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1103 | * for details. | |
1104 | * | |
1105 | * @guid GUID of the installed table | |
1106 | * @table table to be installed | |
1107 | * @return status code | |
1108 | */ | |
488bf12d AG |
1109 | static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, |
1110 | void *table) | |
1111 | { | |
778e6af8 | 1112 | EFI_ENTRY("%pUl, %p", guid, table); |
488bf12d | 1113 | return EFI_EXIT(efi_install_configuration_table(guid, table)); |
bee91169 AG |
1114 | } |
1115 | ||
332468f7 HS |
1116 | /* |
1117 | * Initialize a loaded_image_info + loaded_image_info object with correct | |
95c5553e | 1118 | * protocols, boot-device, etc. |
332468f7 | 1119 | * |
10a08c4e | 1120 | * @info loaded image info to be passed to the entry point of the |
332468f7 HS |
1121 | * image |
1122 | * @obj internal object associated with the loaded image | |
1123 | * @device_path device path of the loaded image | |
1124 | * @file_path file path of the loaded image | |
95c5553e RC |
1125 | */ |
1126 | void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *obj, | |
1127 | struct efi_device_path *device_path, | |
1128 | struct efi_device_path *file_path) | |
1129 | { | |
1130 | obj->handle = info; | |
1131 | ||
1132 | /* | |
1133 | * When asking for the device path interface, return | |
1134 | * bootefi_device_path | |
1135 | */ | |
1136 | obj->protocols[0].guid = &efi_guid_device_path; | |
1137 | obj->protocols[0].protocol_interface = device_path; | |
1138 | ||
1139 | /* | |
1140 | * When asking for the loaded_image interface, just | |
1141 | * return handle which points to loaded_image_info | |
1142 | */ | |
1143 | obj->protocols[1].guid = &efi_guid_loaded_image; | |
1144 | obj->protocols[1].protocol_interface = info; | |
1145 | ||
1146 | obj->protocols[2].guid = &efi_guid_console_control; | |
1147 | obj->protocols[2].protocol_interface = (void *)&efi_console_control; | |
1148 | ||
1149 | obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol; | |
1150 | obj->protocols[3].protocol_interface = | |
1151 | (void *)&efi_device_path_to_text; | |
1152 | ||
1153 | info->file_path = file_path; | |
1a2c8d2f HS |
1154 | if (device_path) |
1155 | info->device_handle = efi_dp_find_obj(device_path, NULL); | |
95c5553e RC |
1156 | |
1157 | list_add_tail(&obj->link, &efi_obj_list); | |
1158 | } | |
1159 | ||
332468f7 HS |
1160 | /* |
1161 | * Load an image using a file path. | |
1162 | * | |
1163 | * @file_path the path of the image to load | |
1164 | * @buffer buffer containing the loaded image | |
10a08c4e | 1165 | * @return status code |
332468f7 | 1166 | */ |
9975fe96 RC |
1167 | efi_status_t efi_load_image_from_path(struct efi_device_path *file_path, |
1168 | void **buffer) | |
838ee4b4 RC |
1169 | { |
1170 | struct efi_file_info *info = NULL; | |
1171 | struct efi_file_handle *f; | |
1172 | static efi_status_t ret; | |
1173 | uint64_t bs; | |
1174 | ||
1175 | f = efi_file_from_path(file_path); | |
1176 | if (!f) | |
1177 | return EFI_DEVICE_ERROR; | |
1178 | ||
1179 | bs = 0; | |
1180 | EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid, | |
1181 | &bs, info)); | |
1182 | if (ret == EFI_BUFFER_TOO_SMALL) { | |
1183 | info = malloc(bs); | |
1184 | EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid, | |
1185 | &bs, info)); | |
1186 | } | |
1187 | if (ret != EFI_SUCCESS) | |
1188 | goto error; | |
1189 | ||
1190 | ret = efi_allocate_pool(EFI_LOADER_DATA, info->file_size, buffer); | |
1191 | if (ret) | |
1192 | goto error; | |
1193 | ||
1194 | EFI_CALL(ret = f->read(f, &info->file_size, *buffer)); | |
1195 | ||
1196 | error: | |
1197 | free(info); | |
1198 | EFI_CALL(f->close(f)); | |
1199 | ||
1200 | if (ret != EFI_SUCCESS) { | |
1201 | efi_free_pool(*buffer); | |
1202 | *buffer = NULL; | |
1203 | } | |
1204 | ||
1205 | return ret; | |
1206 | } | |
1207 | ||
332468f7 HS |
1208 | /* |
1209 | * Load an EFI image into memory. | |
1210 | * | |
1211 | * This function implements the LoadImage service. | |
1212 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1213 | * for details. | |
1214 | * | |
1215 | * @boot_policy true for request originating from the boot manager | |
1216 | * @parent_image the calles's image handle | |
1217 | * @file_path the path of the image to load | |
1218 | * @source_buffer memory location from which the image is installed | |
1219 | * @source_size size of the memory area from which the image is | |
1220 | * installed | |
1221 | * @image_handle handle for the newly installed image | |
1222 | * @return status code | |
1223 | */ | |
bee91169 AG |
1224 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, |
1225 | efi_handle_t parent_image, | |
1226 | struct efi_device_path *file_path, | |
1227 | void *source_buffer, | |
1228 | unsigned long source_size, | |
1229 | efi_handle_t *image_handle) | |
1230 | { | |
bee91169 AG |
1231 | struct efi_loaded_image *info; |
1232 | struct efi_object *obj; | |
1233 | ||
1234 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
1235 | file_path, source_buffer, source_size, image_handle); | |
838ee4b4 RC |
1236 | |
1237 | info = calloc(1, sizeof(*info)); | |
1238 | obj = calloc(1, sizeof(*obj)); | |
1239 | ||
1240 | if (!source_buffer) { | |
1241 | struct efi_device_path *dp, *fp; | |
1242 | efi_status_t ret; | |
1243 | ||
9975fe96 | 1244 | ret = efi_load_image_from_path(file_path, &source_buffer); |
838ee4b4 RC |
1245 | if (ret != EFI_SUCCESS) { |
1246 | free(info); | |
1247 | free(obj); | |
1248 | return EFI_EXIT(ret); | |
1249 | } | |
1250 | ||
1251 | /* | |
1252 | * split file_path which contains both the device and | |
1253 | * file parts: | |
1254 | */ | |
1255 | efi_dp_split_file_path(file_path, &dp, &fp); | |
1256 | ||
1257 | efi_setup_loaded_image(info, obj, dp, fp); | |
1258 | } else { | |
1259 | /* In this case, file_path is the "device" path, ie. | |
1260 | * something like a HARDWARE_DEVICE:MEMORY_MAPPED | |
1261 | */ | |
1262 | efi_setup_loaded_image(info, obj, file_path, NULL); | |
1263 | } | |
1264 | ||
bee91169 AG |
1265 | info->reserved = efi_load_pe(source_buffer, info); |
1266 | if (!info->reserved) { | |
1267 | free(info); | |
1268 | free(obj); | |
1269 | return EFI_EXIT(EFI_UNSUPPORTED); | |
1270 | } | |
1271 | ||
32fc2ac3 HS |
1272 | info->system_table = &systab; |
1273 | info->parent_handle = parent_image; | |
bee91169 | 1274 | *image_handle = info; |
bee91169 AG |
1275 | |
1276 | return EFI_EXIT(EFI_SUCCESS); | |
1277 | } | |
1278 | ||
332468f7 HS |
1279 | /* |
1280 | * Call the entry point of an image. | |
1281 | * | |
1282 | * This function implements the StartImage service. | |
1283 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1284 | * for details. | |
1285 | * | |
1286 | * @image_handle handle of the image | |
1287 | * @exit_data_size size of the buffer | |
1288 | * @exit_data buffer to receive the exit data of the called image | |
10a08c4e | 1289 | * @return status code |
332468f7 | 1290 | */ |
bee91169 AG |
1291 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, |
1292 | unsigned long *exit_data_size, | |
1293 | s16 **exit_data) | |
1294 | { | |
1295 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
1296 | struct efi_loaded_image *info = image_handle; | |
1297 | ||
1298 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
1299 | entry = info->reserved; | |
1300 | ||
1301 | efi_is_direct_boot = false; | |
1302 | ||
1303 | /* call the image! */ | |
a86aeaf2 AG |
1304 | if (setjmp(&info->exit_jmp)) { |
1305 | /* We returned from the child image */ | |
1306 | return EFI_EXIT(info->exit_status); | |
1307 | } | |
1308 | ||
af65db85 | 1309 | __efi_nesting_dec(); |
c160d2f5 | 1310 | __efi_exit_check(); |
bee91169 | 1311 | entry(image_handle, &systab); |
c160d2f5 | 1312 | __efi_entry_check(); |
af65db85 | 1313 | __efi_nesting_inc(); |
bee91169 AG |
1314 | |
1315 | /* Should usually never get here */ | |
1316 | return EFI_EXIT(EFI_SUCCESS); | |
1317 | } | |
1318 | ||
332468f7 HS |
1319 | /* |
1320 | * Leave an EFI application or driver. | |
1321 | * | |
1322 | * This function implements the Exit service. | |
1323 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1324 | * for details. | |
1325 | * | |
1326 | * @image_handle handle of the application or driver that is exiting | |
1327 | * @exit_status status code | |
1328 | * @exit_data_size size of the buffer in bytes | |
1329 | * @exit_data buffer with data describing an error | |
10a08c4e | 1330 | * @return status code |
332468f7 | 1331 | */ |
a86aeaf2 AG |
1332 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
1333 | efi_status_t exit_status, unsigned long exit_data_size, | |
1334 | int16_t *exit_data) | |
bee91169 | 1335 | { |
a86aeaf2 AG |
1336 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
1337 | ||
bee91169 AG |
1338 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
1339 | exit_data_size, exit_data); | |
a86aeaf2 | 1340 | |
a148920e | 1341 | /* Make sure entry/exit counts for EFI world cross-overs match */ |
da94073b HS |
1342 | __efi_exit_check(); |
1343 | ||
a148920e AG |
1344 | /* |
1345 | * But longjmp out with the U-Boot gd, not the application's, as | |
1346 | * the other end is a setjmp call inside EFI context. | |
1347 | */ | |
1348 | efi_restore_gd(); | |
1349 | ||
a86aeaf2 | 1350 | loaded_image_info->exit_status = exit_status; |
692fcdd8 | 1351 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
1352 | |
1353 | panic("EFI application exited"); | |
bee91169 AG |
1354 | } |
1355 | ||
332468f7 HS |
1356 | /* |
1357 | * Unload an EFI image. | |
1358 | * | |
1359 | * This function implements the UnloadImage service. | |
1360 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1361 | * for details. | |
1362 | * | |
1363 | * @image_handle handle of the image to be unloaded | |
1364 | * @return status code | |
1365 | */ | |
bee91169 AG |
1366 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) |
1367 | { | |
1368 | struct efi_object *efiobj; | |
1369 | ||
1370 | EFI_ENTRY("%p", image_handle); | |
1371 | efiobj = efi_search_obj(image_handle); | |
1372 | if (efiobj) | |
1373 | list_del(&efiobj->link); | |
1374 | ||
1375 | return EFI_EXIT(EFI_SUCCESS); | |
1376 | } | |
1377 | ||
332468f7 HS |
1378 | /* |
1379 | * Fix up caches for EFI payloads if necessary. | |
1380 | */ | |
bee91169 AG |
1381 | static void efi_exit_caches(void) |
1382 | { | |
1383 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
1384 | /* | |
1385 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
1386 | * a zImage, but does not know of all cache layers. Give it a hand. | |
1387 | */ | |
1388 | if (efi_is_direct_boot) | |
1389 | cleanup_before_linux(); | |
1390 | #endif | |
1391 | } | |
1392 | ||
332468f7 HS |
1393 | /* |
1394 | * Stop boot services. | |
1395 | * | |
1396 | * This function implements the ExitBootServices service. | |
1397 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1398 | * for details. | |
1399 | * | |
1400 | * @image_handle handle of the loaded image | |
1401 | * @map_key key of the memory map | |
1402 | * @return status code | |
1403 | */ | |
bee91169 AG |
1404 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, |
1405 | unsigned long map_key) | |
1406 | { | |
152a263c HS |
1407 | int i; |
1408 | ||
bee91169 AG |
1409 | EFI_ENTRY("%p, %ld", image_handle, map_key); |
1410 | ||
152a263c HS |
1411 | /* Notify that ExitBootServices is invoked. */ |
1412 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
1413 | if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES) | |
1414 | continue; | |
1415 | efi_signal_event(&efi_events[i]); | |
1416 | } | |
1417 | /* Make sure that notification functions are not called anymore */ | |
1418 | efi_tpl = TPL_HIGH_LEVEL; | |
1419 | ||
40583564 | 1420 | /* XXX Should persist EFI variables here */ |
ad644e7c | 1421 | |
b7b8410a AG |
1422 | board_quiesce_devices(); |
1423 | ||
bee91169 AG |
1424 | /* Fix up caches for EFI payloads if necessary */ |
1425 | efi_exit_caches(); | |
1426 | ||
1427 | /* This stops all lingering devices */ | |
1428 | bootm_disable_interrupts(); | |
1429 | ||
1430 | /* Give the payload some time to boot */ | |
b3d60900 | 1431 | efi_set_watchdog(0); |
bee91169 AG |
1432 | WATCHDOG_RESET(); |
1433 | ||
1434 | return EFI_EXIT(EFI_SUCCESS); | |
1435 | } | |
1436 | ||
332468f7 HS |
1437 | /* |
1438 | * Get next value of the counter. | |
1439 | * | |
1440 | * This function implements the NextMonotonicCount service. | |
1441 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1442 | * for details. | |
1443 | * | |
1444 | * @count returned value of the counter | |
1445 | * @return status code | |
1446 | */ | |
bee91169 AG |
1447 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) |
1448 | { | |
1449 | static uint64_t mono = 0; | |
1450 | EFI_ENTRY("%p", count); | |
1451 | *count = mono++; | |
1452 | return EFI_EXIT(EFI_SUCCESS); | |
1453 | } | |
1454 | ||
332468f7 HS |
1455 | /* |
1456 | * Sleep. | |
1457 | * | |
1458 | * This function implements the Stall sercive. | |
1459 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1460 | * for details. | |
1461 | * | |
1462 | * @microseconds period to sleep in microseconds | |
1463 | * @return status code | |
1464 | */ | |
bee91169 AG |
1465 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) |
1466 | { | |
1467 | EFI_ENTRY("%ld", microseconds); | |
1468 | udelay(microseconds); | |
1469 | return EFI_EXIT(EFI_SUCCESS); | |
1470 | } | |
1471 | ||
332468f7 HS |
1472 | /* |
1473 | * Reset the watchdog timer. | |
1474 | * | |
b3d60900 | 1475 | * This function implements the SetWatchdogTimer service. |
332468f7 HS |
1476 | * See the Unified Extensible Firmware Interface (UEFI) specification |
1477 | * for details. | |
1478 | * | |
1479 | * @timeout seconds before reset by watchdog | |
1480 | * @watchdog_code code to be logged when resetting | |
1481 | * @data_size size of buffer in bytes | |
1482 | * @watchdog_data buffer with data describing the reset reason | |
10a08c4e | 1483 | * @return status code |
332468f7 | 1484 | */ |
bee91169 AG |
1485 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, |
1486 | uint64_t watchdog_code, | |
1487 | unsigned long data_size, | |
1488 | uint16_t *watchdog_data) | |
1489 | { | |
1490 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
1491 | data_size, watchdog_data); | |
b3d60900 | 1492 | return EFI_EXIT(efi_set_watchdog(timeout)); |
bee91169 AG |
1493 | } |
1494 | ||
332468f7 HS |
1495 | /* |
1496 | * Connect a controller to a driver. | |
1497 | * | |
1498 | * This function implements the ConnectController service. | |
1499 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1500 | * for details. | |
1501 | * | |
1502 | * @controller_handle handle of the controller | |
1503 | * @driver_image_handle handle of the driver | |
1504 | * @remain_device_path device path of a child controller | |
1505 | * @recursive true to connect all child controllers | |
1506 | * @return status code | |
1507 | */ | |
bee91169 AG |
1508 | static efi_status_t EFIAPI efi_connect_controller( |
1509 | efi_handle_t controller_handle, | |
1510 | efi_handle_t *driver_image_handle, | |
1511 | struct efi_device_path *remain_device_path, | |
1512 | bool recursive) | |
1513 | { | |
1514 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
1515 | remain_device_path, recursive); | |
1516 | return EFI_EXIT(EFI_NOT_FOUND); | |
1517 | } | |
1518 | ||
332468f7 HS |
1519 | /* |
1520 | * Disconnect a controller from a driver. | |
1521 | * | |
1522 | * This function implements the DisconnectController service. | |
1523 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1524 | * for details. | |
1525 | * | |
1526 | * @controller_handle handle of the controller | |
1527 | * @driver_image_handle handle of the driver | |
1528 | * @child_handle handle of the child to destroy | |
1529 | * @return status code | |
1530 | */ | |
bee91169 AG |
1531 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, |
1532 | void *driver_image_handle, | |
1533 | void *child_handle) | |
1534 | { | |
1535 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
1536 | child_handle); | |
1537 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1538 | } | |
1539 | ||
332468f7 HS |
1540 | /* |
1541 | * Close a protocol. | |
1542 | * | |
1543 | * This function implements the CloseProtocol service. | |
1544 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1545 | * for details. | |
1546 | * | |
1547 | * @handle handle on which the protocol shall be closed | |
1548 | * @protocol GUID of the protocol to close | |
1549 | * @agent_handle handle of the driver | |
1550 | * @controller_handle handle of the controller | |
1551 | * @return status code | |
1552 | */ | |
bee91169 | 1553 | static efi_status_t EFIAPI efi_close_protocol(void *handle, |
5a9682d0 | 1554 | const efi_guid_t *protocol, |
bee91169 AG |
1555 | void *agent_handle, |
1556 | void *controller_handle) | |
1557 | { | |
778e6af8 | 1558 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle, |
bee91169 AG |
1559 | controller_handle); |
1560 | return EFI_EXIT(EFI_NOT_FOUND); | |
1561 | } | |
1562 | ||
332468f7 HS |
1563 | /* |
1564 | * Provide information about then open status of a protocol on a handle | |
1565 | * | |
1566 | * This function implements the OpenProtocolInformation service. | |
1567 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1568 | * for details. | |
1569 | * | |
1570 | * @handle handle for which the information shall be retrieved | |
1571 | * @protocol GUID of the protocol | |
1572 | * @entry_buffer buffer to receive the open protocol information | |
1573 | * @entry_count number of entries available in the buffer | |
1574 | * @return status code | |
1575 | */ | |
bee91169 | 1576 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, |
5a9682d0 | 1577 | const efi_guid_t *protocol, |
bee91169 | 1578 | struct efi_open_protocol_info_entry **entry_buffer, |
f5a2a938 | 1579 | efi_uintn_t *entry_count) |
bee91169 | 1580 | { |
778e6af8 | 1581 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, entry_buffer, |
bee91169 AG |
1582 | entry_count); |
1583 | return EFI_EXIT(EFI_NOT_FOUND); | |
1584 | } | |
1585 | ||
332468f7 HS |
1586 | /* |
1587 | * Get protocols installed on a handle. | |
1588 | * | |
1589 | * This function implements the ProtocolsPerHandleService. | |
1590 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1591 | * for details. | |
1592 | * | |
1593 | * @handle handle for which the information is retrieved | |
1594 | * @protocol_buffer buffer with protocol GUIDs | |
1595 | * @protocol_buffer_count number of entries in the buffer | |
10a08c4e | 1596 | * @return status code |
332468f7 | 1597 | */ |
bee91169 AG |
1598 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, |
1599 | efi_guid_t ***protocol_buffer, | |
f5a2a938 | 1600 | efi_uintn_t *protocol_buffer_count) |
bee91169 | 1601 | { |
c0ebfc86 | 1602 | unsigned long buffer_size; |
1603 | struct efi_object *efiobj; | |
1604 | unsigned long i, j; | |
1605 | struct list_head *lhandle; | |
1606 | efi_status_t r; | |
1607 | ||
bee91169 AG |
1608 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, |
1609 | protocol_buffer_count); | |
c0ebfc86 | 1610 | |
1611 | if (!handle || !protocol_buffer || !protocol_buffer_count) | |
1612 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1613 | ||
1614 | *protocol_buffer = NULL; | |
661c8327 | 1615 | *protocol_buffer_count = 0; |
c0ebfc86 | 1616 | list_for_each(lhandle, &efi_obj_list) { |
1617 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1618 | ||
1619 | if (efiobj->handle != handle) | |
1620 | continue; | |
1621 | ||
1622 | /* Count protocols */ | |
1623 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1624 | if (efiobj->protocols[i].guid) | |
1625 | ++*protocol_buffer_count; | |
1626 | } | |
1627 | /* Copy guids */ | |
1628 | if (*protocol_buffer_count) { | |
1629 | buffer_size = sizeof(efi_guid_t *) * | |
1630 | *protocol_buffer_count; | |
1631 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
1632 | buffer_size, | |
1633 | (void **)protocol_buffer); | |
1634 | if (r != EFI_SUCCESS) | |
1635 | return EFI_EXIT(r); | |
1636 | j = 0; | |
1637 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) { | |
1638 | if (efiobj->protocols[i].guid) { | |
1639 | (*protocol_buffer)[j] = (void *) | |
1640 | efiobj->protocols[i].guid; | |
1641 | ++j; | |
1642 | } | |
1643 | } | |
1644 | } | |
1645 | break; | |
1646 | } | |
1647 | ||
1648 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
1649 | } |
1650 | ||
332468f7 HS |
1651 | /* |
1652 | * Locate handles implementing a protocol. | |
1653 | * | |
1654 | * This function implements the LocateHandleBuffer service. | |
1655 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1656 | * for details. | |
1657 | * | |
1658 | * @search_type selection criterion | |
1659 | * @protocol GUID of the protocol | |
1660 | * @search_key registration key | |
1661 | * @no_handles number of returned handles | |
1662 | * @buffer buffer with the returned handles | |
1663 | * @return status code | |
1664 | */ | |
bee91169 AG |
1665 | static efi_status_t EFIAPI efi_locate_handle_buffer( |
1666 | enum efi_locate_search_type search_type, | |
5a9682d0 | 1667 | const efi_guid_t *protocol, void *search_key, |
f5a2a938 | 1668 | efi_uintn_t *no_handles, efi_handle_t **buffer) |
bee91169 | 1669 | { |
c2e703f9 | 1670 | efi_status_t r; |
f5a2a938 | 1671 | efi_uintn_t buffer_size = 0; |
c2e703f9 | 1672 | |
778e6af8 | 1673 | EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key, |
bee91169 | 1674 | no_handles, buffer); |
c2e703f9 | 1675 | |
1676 | if (!no_handles || !buffer) { | |
1677 | r = EFI_INVALID_PARAMETER; | |
1678 | goto out; | |
1679 | } | |
1680 | *no_handles = 0; | |
1681 | *buffer = NULL; | |
1682 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1683 | *buffer); | |
1684 | if (r != EFI_BUFFER_TOO_SMALL) | |
1685 | goto out; | |
1686 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size, | |
1687 | (void **)buffer); | |
1688 | if (r != EFI_SUCCESS) | |
1689 | goto out; | |
1690 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1691 | *buffer); | |
1692 | if (r == EFI_SUCCESS) | |
1693 | *no_handles = buffer_size / sizeof(void *); | |
1694 | out: | |
1695 | return EFI_EXIT(r); | |
bee91169 AG |
1696 | } |
1697 | ||
332468f7 HS |
1698 | /* |
1699 | * Find an interface implementing a protocol. | |
1700 | * | |
1701 | * This function implements the LocateProtocol service. | |
1702 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1703 | * for details. | |
1704 | * | |
1705 | * @protocol GUID of the protocol | |
1706 | * @registration registration key passed to the notification function | |
1707 | * @protocol_interface interface implementing the protocol | |
10a08c4e | 1708 | * @return status code |
332468f7 | 1709 | */ |
5a9682d0 | 1710 | static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol, |
bee91169 AG |
1711 | void *registration, |
1712 | void **protocol_interface) | |
1713 | { | |
88adae5e | 1714 | struct list_head *lhandle; |
bee91169 AG |
1715 | int i; |
1716 | ||
778e6af8 | 1717 | EFI_ENTRY("%pUl, %p, %p", protocol, registration, protocol_interface); |
88adae5e | 1718 | |
1719 | if (!protocol || !protocol_interface) | |
1720 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1721 | ||
ae0bd3a9 HS |
1722 | EFI_PRINT_GUID("protocol", protocol); |
1723 | ||
88adae5e | 1724 | list_for_each(lhandle, &efi_obj_list) { |
1725 | struct efi_object *efiobj; | |
1726 | ||
1727 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1728 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1729 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1730 | ||
1731 | if (!handler->guid) | |
1732 | continue; | |
1733 | if (!guidcmp(handler->guid, protocol)) { | |
1734 | *protocol_interface = | |
1735 | handler->protocol_interface; | |
1736 | return EFI_EXIT(EFI_SUCCESS); | |
1737 | } | |
bee91169 AG |
1738 | } |
1739 | } | |
88adae5e | 1740 | *protocol_interface = NULL; |
bee91169 AG |
1741 | |
1742 | return EFI_EXIT(EFI_NOT_FOUND); | |
1743 | } | |
1744 | ||
332468f7 HS |
1745 | /* |
1746 | * Install multiple protocol interfaces. | |
1747 | * | |
1748 | * This function implements the MultipleProtocolInterfaces service. | |
1749 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1750 | * for details. | |
1751 | * | |
1752 | * @handle handle on which the protocol interfaces shall be installed | |
1753 | * @... NULL terminated argument list with pairs of protocol GUIDS and | |
1754 | * interfaces | |
1755 | * @return status code | |
1756 | */ | |
bee91169 AG |
1757 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( |
1758 | void **handle, ...) | |
1759 | { | |
1760 | EFI_ENTRY("%p", handle); | |
58b83586 | 1761 | |
1762 | va_list argptr; | |
5a9682d0 | 1763 | const efi_guid_t *protocol; |
58b83586 | 1764 | void *protocol_interface; |
1765 | efi_status_t r = EFI_SUCCESS; | |
1766 | int i = 0; | |
1767 | ||
1768 | if (!handle) | |
1769 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1770 | ||
1771 | va_start(argptr, handle); | |
1772 | for (;;) { | |
1773 | protocol = va_arg(argptr, efi_guid_t*); | |
1774 | if (!protocol) | |
1775 | break; | |
1776 | protocol_interface = va_arg(argptr, void*); | |
1760ef57 HS |
1777 | r = EFI_CALL(efi_install_protocol_interface( |
1778 | handle, protocol, | |
1779 | EFI_NATIVE_INTERFACE, | |
1780 | protocol_interface)); | |
58b83586 | 1781 | if (r != EFI_SUCCESS) |
1782 | break; | |
1783 | i++; | |
1784 | } | |
1785 | va_end(argptr); | |
1786 | if (r == EFI_SUCCESS) | |
1787 | return EFI_EXIT(r); | |
1788 | ||
62471e46 | 1789 | /* If an error occurred undo all changes. */ |
58b83586 | 1790 | va_start(argptr, handle); |
1791 | for (; i; --i) { | |
1792 | protocol = va_arg(argptr, efi_guid_t*); | |
1793 | protocol_interface = va_arg(argptr, void*); | |
cd534083 HS |
1794 | EFI_CALL(efi_uninstall_protocol_interface(handle, protocol, |
1795 | protocol_interface)); | |
58b83586 | 1796 | } |
1797 | va_end(argptr); | |
1798 | ||
1799 | return EFI_EXIT(r); | |
bee91169 AG |
1800 | } |
1801 | ||
332468f7 HS |
1802 | /* |
1803 | * Uninstall multiple protocol interfaces. | |
1804 | * | |
1805 | * This function implements the UninstallMultipleProtocolInterfaces service. | |
1806 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1807 | * for details. | |
1808 | * | |
1809 | * @handle handle from which the protocol interfaces shall be removed | |
1810 | * @... NULL terminated argument list with pairs of protocol GUIDS and | |
1811 | * interfaces | |
1812 | * @return status code | |
1813 | */ | |
bee91169 AG |
1814 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( |
1815 | void *handle, ...) | |
1816 | { | |
1817 | EFI_ENTRY("%p", handle); | |
843ce54c HS |
1818 | |
1819 | va_list argptr; | |
1820 | const efi_guid_t *protocol; | |
1821 | void *protocol_interface; | |
1822 | efi_status_t r = EFI_SUCCESS; | |
1823 | size_t i = 0; | |
1824 | ||
1825 | if (!handle) | |
1826 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1827 | ||
1828 | va_start(argptr, handle); | |
1829 | for (;;) { | |
1830 | protocol = va_arg(argptr, efi_guid_t*); | |
1831 | if (!protocol) | |
1832 | break; | |
1833 | protocol_interface = va_arg(argptr, void*); | |
1834 | r = EFI_CALL(efi_uninstall_protocol_interface( | |
1835 | handle, protocol, | |
1836 | protocol_interface)); | |
1837 | if (r != EFI_SUCCESS) | |
1838 | break; | |
1839 | i++; | |
1840 | } | |
1841 | va_end(argptr); | |
1842 | if (r == EFI_SUCCESS) | |
1843 | return EFI_EXIT(r); | |
1844 | ||
1845 | /* If an error occurred undo all changes. */ | |
1846 | va_start(argptr, handle); | |
1847 | for (; i; --i) { | |
1848 | protocol = va_arg(argptr, efi_guid_t*); | |
1849 | protocol_interface = va_arg(argptr, void*); | |
1850 | EFI_CALL(efi_install_protocol_interface(&handle, protocol, | |
1851 | EFI_NATIVE_INTERFACE, | |
1852 | protocol_interface)); | |
1853 | } | |
1854 | va_end(argptr); | |
1855 | ||
1856 | return EFI_EXIT(r); | |
bee91169 AG |
1857 | } |
1858 | ||
332468f7 HS |
1859 | /* |
1860 | * Calculate cyclic redundancy code. | |
1861 | * | |
1862 | * This function implements the CalculateCrc32 service. | |
1863 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1864 | * for details. | |
1865 | * | |
1866 | * @data buffer with data | |
1867 | * @data_size size of buffer in bytes | |
1868 | * @crc32_p cyclic redundancy code | |
1869 | * @return status code | |
1870 | */ | |
bee91169 AG |
1871 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, |
1872 | unsigned long data_size, | |
1873 | uint32_t *crc32_p) | |
1874 | { | |
1875 | EFI_ENTRY("%p, %ld", data, data_size); | |
1876 | *crc32_p = crc32(0, data, data_size); | |
1877 | return EFI_EXIT(EFI_SUCCESS); | |
1878 | } | |
1879 | ||
332468f7 HS |
1880 | /* |
1881 | * Copy memory. | |
1882 | * | |
1883 | * This function implements the CopyMem service. | |
1884 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1885 | * for details. | |
1886 | * | |
1887 | * @destination destination of the copy operation | |
1888 | * @source source of the copy operation | |
1889 | * @length number of bytes to copy | |
1890 | */ | |
fc05a959 HS |
1891 | static void EFIAPI efi_copy_mem(void *destination, const void *source, |
1892 | size_t length) | |
bee91169 | 1893 | { |
fc05a959 | 1894 | EFI_ENTRY("%p, %p, %ld", destination, source, (unsigned long)length); |
bee91169 | 1895 | memcpy(destination, source, length); |
f7c78176 | 1896 | EFI_EXIT(EFI_SUCCESS); |
bee91169 AG |
1897 | } |
1898 | ||
332468f7 HS |
1899 | /* |
1900 | * Fill memory with a byte value. | |
1901 | * | |
1902 | * This function implements the SetMem service. | |
1903 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1904 | * for details. | |
1905 | * | |
1906 | * @buffer buffer to fill | |
1907 | * @size size of buffer in bytes | |
1908 | * @value byte to copy to the buffer | |
1909 | */ | |
fc05a959 | 1910 | static void EFIAPI efi_set_mem(void *buffer, size_t size, uint8_t value) |
bee91169 | 1911 | { |
fc05a959 | 1912 | EFI_ENTRY("%p, %ld, 0x%x", buffer, (unsigned long)size, value); |
bee91169 | 1913 | memset(buffer, value, size); |
f7c78176 | 1914 | EFI_EXIT(EFI_SUCCESS); |
bee91169 AG |
1915 | } |
1916 | ||
332468f7 HS |
1917 | /* |
1918 | * Open protocol interface on a handle. | |
1919 | * | |
1920 | * This function implements the OpenProtocol interface. | |
1921 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1922 | * for details. | |
1923 | * | |
1924 | * @handle handle on which the protocol shall be opened | |
1925 | * @protocol GUID of the protocol | |
1926 | * @protocol_interface interface implementing the protocol | |
1927 | * @agent_handle handle of the driver | |
1928 | * @controller_handle handle of the controller | |
1929 | * @attributes attributes indicating how to open the protocol | |
1930 | * @return status code | |
1931 | */ | |
bee91169 | 1932 | static efi_status_t EFIAPI efi_open_protocol( |
5a9682d0 | 1933 | void *handle, const efi_guid_t *protocol, |
bee91169 AG |
1934 | void **protocol_interface, void *agent_handle, |
1935 | void *controller_handle, uint32_t attributes) | |
1936 | { | |
1937 | struct list_head *lhandle; | |
1938 | int i; | |
69baec67 | 1939 | efi_status_t r = EFI_INVALID_PARAMETER; |
bee91169 | 1940 | |
778e6af8 | 1941 | EFI_ENTRY("%p, %pUl, %p, %p, %p, 0x%x", handle, protocol, |
bee91169 AG |
1942 | protocol_interface, agent_handle, controller_handle, |
1943 | attributes); | |
b5349f74 | 1944 | |
69baec67 | 1945 | if (!handle || !protocol || |
1946 | (!protocol_interface && attributes != | |
1947 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) { | |
1948 | goto out; | |
1949 | } | |
1950 | ||
ae0bd3a9 HS |
1951 | EFI_PRINT_GUID("protocol", protocol); |
1952 | ||
69baec67 | 1953 | switch (attributes) { |
1954 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL: | |
1955 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL: | |
1956 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL: | |
1957 | break; | |
1958 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER: | |
1959 | if (controller_handle == handle) | |
1960 | goto out; | |
1961 | case EFI_OPEN_PROTOCOL_BY_DRIVER: | |
1962 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1963 | if (controller_handle == NULL) | |
1964 | goto out; | |
1965 | case EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1966 | if (agent_handle == NULL) | |
1967 | goto out; | |
1968 | break; | |
1969 | default: | |
b5349f74 | 1970 | goto out; |
1971 | } | |
1972 | ||
bee91169 AG |
1973 | list_for_each(lhandle, &efi_obj_list) { |
1974 | struct efi_object *efiobj; | |
1975 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1976 | ||
1977 | if (efiobj->handle != handle) | |
1978 | continue; | |
1979 | ||
1980 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1981 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1982 | const efi_guid_t *hprotocol = handler->guid; | |
1983 | if (!hprotocol) | |
4b6ed0d7 | 1984 | continue; |
bee91169 | 1985 | if (!guidcmp(hprotocol, protocol)) { |
b5349f74 | 1986 | if (attributes != |
1987 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL) { | |
1988 | *protocol_interface = | |
1989 | handler->protocol_interface; | |
1990 | } | |
1991 | r = EFI_SUCCESS; | |
bee91169 AG |
1992 | goto out; |
1993 | } | |
1994 | } | |
69baec67 | 1995 | goto unsupported; |
bee91169 AG |
1996 | } |
1997 | ||
69baec67 | 1998 | unsupported: |
1999 | r = EFI_UNSUPPORTED; | |
bee91169 AG |
2000 | out: |
2001 | return EFI_EXIT(r); | |
2002 | } | |
2003 | ||
332468f7 HS |
2004 | /* |
2005 | * Get interface of a protocol on a handle. | |
2006 | * | |
2007 | * This function implements the HandleProtocol service. | |
2008 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
2009 | * for details. | |
2010 | * | |
2011 | * @handle handle on which the protocol shall be opened | |
2012 | * @protocol GUID of the protocol | |
2013 | * @protocol_interface interface implementing the protocol | |
2014 | * @return status code | |
2015 | */ | |
bee91169 | 2016 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, |
5a9682d0 | 2017 | const efi_guid_t *protocol, |
bee91169 AG |
2018 | void **protocol_interface) |
2019 | { | |
8e1d329f | 2020 | return efi_open_protocol(handle, protocol, protocol_interface, NULL, |
2021 | NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL); | |
bee91169 AG |
2022 | } |
2023 | ||
2024 | static const struct efi_boot_services efi_boot_services = { | |
2025 | .hdr = { | |
2026 | .headersize = sizeof(struct efi_table_hdr), | |
2027 | }, | |
2028 | .raise_tpl = efi_raise_tpl, | |
2029 | .restore_tpl = efi_restore_tpl, | |
2030 | .allocate_pages = efi_allocate_pages_ext, | |
2031 | .free_pages = efi_free_pages_ext, | |
2032 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 2033 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 2034 | .free_pool = efi_free_pool_ext, |
49deb455 | 2035 | .create_event = efi_create_event_ext, |
bfc72462 | 2036 | .set_timer = efi_set_timer_ext, |
bee91169 | 2037 | .wait_for_event = efi_wait_for_event, |
c6841592 | 2038 | .signal_event = efi_signal_event_ext, |
bee91169 AG |
2039 | .close_event = efi_close_event, |
2040 | .check_event = efi_check_event, | |
1760ef57 | 2041 | .install_protocol_interface = efi_install_protocol_interface, |
bee91169 | 2042 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, |
cd534083 | 2043 | .uninstall_protocol_interface = efi_uninstall_protocol_interface, |
bee91169 AG |
2044 | .handle_protocol = efi_handle_protocol, |
2045 | .reserved = NULL, | |
2046 | .register_protocol_notify = efi_register_protocol_notify, | |
26329584 | 2047 | .locate_handle = efi_locate_handle_ext, |
bee91169 | 2048 | .locate_device_path = efi_locate_device_path, |
488bf12d | 2049 | .install_configuration_table = efi_install_configuration_table_ext, |
bee91169 AG |
2050 | .load_image = efi_load_image, |
2051 | .start_image = efi_start_image, | |
a86aeaf2 | 2052 | .exit = efi_exit, |
bee91169 AG |
2053 | .unload_image = efi_unload_image, |
2054 | .exit_boot_services = efi_exit_boot_services, | |
2055 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
2056 | .stall = efi_stall, | |
2057 | .set_watchdog_timer = efi_set_watchdog_timer, | |
2058 | .connect_controller = efi_connect_controller, | |
2059 | .disconnect_controller = efi_disconnect_controller, | |
2060 | .open_protocol = efi_open_protocol, | |
2061 | .close_protocol = efi_close_protocol, | |
2062 | .open_protocol_information = efi_open_protocol_information, | |
2063 | .protocols_per_handle = efi_protocols_per_handle, | |
2064 | .locate_handle_buffer = efi_locate_handle_buffer, | |
2065 | .locate_protocol = efi_locate_protocol, | |
2066 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
2067 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
2068 | .calculate_crc32 = efi_calculate_crc32, | |
2069 | .copy_mem = efi_copy_mem, | |
2070 | .set_mem = efi_set_mem, | |
2071 | }; | |
2072 | ||
2073 | ||
3c63db9c | 2074 | static uint16_t __efi_runtime_data firmware_vendor[] = |
bee91169 AG |
2075 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
2076 | ||
3c63db9c | 2077 | struct efi_system_table __efi_runtime_data systab = { |
bee91169 AG |
2078 | .hdr = { |
2079 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
2080 | .revision = 0x20005, /* 2.5 */ | |
2081 | .headersize = sizeof(struct efi_table_hdr), | |
2082 | }, | |
2083 | .fw_vendor = (long)firmware_vendor, | |
2084 | .con_in = (void*)&efi_con_in, | |
2085 | .con_out = (void*)&efi_con_out, | |
2086 | .std_err = (void*)&efi_con_out, | |
2087 | .runtime = (void*)&efi_runtime_services, | |
2088 | .boottime = (void*)&efi_boot_services, | |
2089 | .nr_tables = 0, | |
2090 | .tables = (void*)efi_conf_table, | |
2091 | }; |