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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 | 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 HS |
23 | /* Task priority level */ |
24 | static UINTN efi_tpl = TPL_APPLICATION; | |
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 | * Write a debug message for an EPI API service that is not implemented yet. | |
160 | * | |
161 | * @funcname function that is not yet implemented | |
162 | * @return EFI_UNSUPPORTED | |
163 | */ | |
bee91169 AG |
164 | static efi_status_t efi_unsupported(const char *funcname) |
165 | { | |
edcef3ba | 166 | debug("EFI: App called into unimplemented function %s\n", funcname); |
bee91169 AG |
167 | return EFI_EXIT(EFI_UNSUPPORTED); |
168 | } | |
169 | ||
332468f7 HS |
170 | /* |
171 | * Raise the task priority level. | |
172 | * | |
173 | * This function implements the RaiseTpl service. | |
174 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
175 | * for details. | |
176 | * | |
177 | * @new_tpl new value of the task priority level | |
178 | * @return old value of the task priority level | |
179 | */ | |
503f2695 | 180 | static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl) |
bee91169 | 181 | { |
32f4b2f8 HS |
182 | UINTN old_tpl = efi_tpl; |
183 | ||
503f2695 | 184 | EFI_ENTRY("0x%zx", new_tpl); |
32f4b2f8 HS |
185 | |
186 | if (new_tpl < efi_tpl) | |
187 | debug("WARNING: new_tpl < current_tpl in %s\n", __func__); | |
188 | efi_tpl = new_tpl; | |
189 | if (efi_tpl > TPL_HIGH_LEVEL) | |
190 | efi_tpl = TPL_HIGH_LEVEL; | |
191 | ||
192 | EFI_EXIT(EFI_SUCCESS); | |
193 | return old_tpl; | |
bee91169 AG |
194 | } |
195 | ||
332468f7 HS |
196 | /* |
197 | * Lower the task priority level. | |
198 | * | |
199 | * This function implements the RestoreTpl service. | |
200 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
201 | * for details. | |
202 | * | |
203 | * @old_tpl value of the task priority level to be restored | |
204 | */ | |
503f2695 | 205 | static void EFIAPI efi_restore_tpl(UINTN old_tpl) |
bee91169 | 206 | { |
503f2695 | 207 | EFI_ENTRY("0x%zx", old_tpl); |
32f4b2f8 HS |
208 | |
209 | if (old_tpl > efi_tpl) | |
210 | debug("WARNING: old_tpl > current_tpl in %s\n", __func__); | |
211 | efi_tpl = old_tpl; | |
212 | if (efi_tpl > TPL_HIGH_LEVEL) | |
213 | efi_tpl = TPL_HIGH_LEVEL; | |
214 | ||
215 | EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
216 | } |
217 | ||
332468f7 HS |
218 | /* |
219 | * Allocate memory pages. | |
220 | * | |
221 | * This function implements the AllocatePages service. | |
222 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
223 | * for details. | |
224 | * | |
225 | * @type type of allocation to be performed | |
226 | * @memory_type usage type of the allocated memory | |
227 | * @pages number of pages to be allocated | |
228 | * @memory allocated memory | |
229 | * @return status code | |
230 | */ | |
6e0bf8d8 MY |
231 | static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, |
232 | unsigned long pages, | |
233 | uint64_t *memory) | |
bee91169 AG |
234 | { |
235 | efi_status_t r; | |
236 | ||
237 | EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); | |
238 | r = efi_allocate_pages(type, memory_type, pages, memory); | |
239 | return EFI_EXIT(r); | |
240 | } | |
241 | ||
332468f7 HS |
242 | /* |
243 | * Free memory pages. | |
244 | * | |
245 | * This function implements the FreePages service. | |
246 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
247 | * for details. | |
248 | * | |
249 | * @memory start of the memory area to be freed | |
250 | * @pages number of pages to be freed | |
251 | * @return status code | |
252 | */ | |
6e0bf8d8 MY |
253 | static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, |
254 | unsigned long pages) | |
bee91169 AG |
255 | { |
256 | efi_status_t r; | |
257 | ||
258 | EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); | |
259 | r = efi_free_pages(memory, pages); | |
260 | return EFI_EXIT(r); | |
261 | } | |
262 | ||
332468f7 HS |
263 | /* |
264 | * Get map describing memory usage. | |
265 | * | |
266 | * This function implements the GetMemoryMap service. | |
267 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
268 | * for details. | |
269 | * | |
270 | * @memory_map_size on entry the size, in bytes, of the memory map buffer, | |
271 | * on exit the size of the copied memory map | |
272 | * @memory_map buffer to which the memory map is written | |
273 | * @map_key key for the memory map | |
274 | * @descriptor_size size of an individual memory descriptor | |
275 | * @descriptor_version version number of the memory descriptor structure | |
276 | * @return status code | |
277 | */ | |
6e0bf8d8 MY |
278 | static efi_status_t EFIAPI efi_get_memory_map_ext( |
279 | unsigned long *memory_map_size, | |
280 | struct efi_mem_desc *memory_map, | |
281 | unsigned long *map_key, | |
282 | unsigned long *descriptor_size, | |
283 | uint32_t *descriptor_version) | |
bee91169 AG |
284 | { |
285 | efi_status_t r; | |
286 | ||
287 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
288 | map_key, descriptor_size, descriptor_version); | |
289 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
290 | descriptor_size, descriptor_version); | |
291 | return EFI_EXIT(r); | |
292 | } | |
293 | ||
332468f7 HS |
294 | /* |
295 | * Allocate memory from pool. | |
296 | * | |
297 | * This function implements the AllocatePool service. | |
298 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
299 | * for details. | |
300 | * | |
301 | * @pool_type type of the pool from which memory is to be allocated | |
302 | * @size number of bytes to be allocated | |
303 | * @buffer allocated memory | |
304 | * @return status code | |
305 | */ | |
ead1274b SB |
306 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
307 | unsigned long size, | |
308 | void **buffer) | |
bee91169 | 309 | { |
1cd29f0a AG |
310 | efi_status_t r; |
311 | ||
312 | EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); | |
ead1274b | 313 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 314 | return EFI_EXIT(r); |
bee91169 AG |
315 | } |
316 | ||
332468f7 HS |
317 | /* |
318 | * Free memory from pool. | |
319 | * | |
320 | * This function implements the FreePool service. | |
321 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
322 | * for details. | |
323 | * | |
324 | * @buffer start of memory to be freed | |
325 | * @return status code | |
326 | */ | |
42417bc8 | 327 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 328 | { |
1cd29f0a AG |
329 | efi_status_t r; |
330 | ||
331 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 332 | r = efi_free_pool(buffer); |
1cd29f0a | 333 | return EFI_EXIT(r); |
bee91169 AG |
334 | } |
335 | ||
3cc6e3fe HS |
336 | static efi_status_t efi_create_handle(void **handle) |
337 | { | |
338 | struct efi_object *obj; | |
339 | efi_status_t r; | |
340 | ||
341 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
342 | sizeof(struct efi_object), | |
343 | (void **)&obj); | |
344 | if (r != EFI_SUCCESS) | |
345 | return r; | |
346 | memset(obj, 0, sizeof(struct efi_object)); | |
347 | obj->handle = obj; | |
348 | list_add_tail(&obj->link, &efi_obj_list); | |
349 | *handle = obj; | |
350 | return r; | |
351 | } | |
352 | ||
bee91169 | 353 | /* |
c6841592 | 354 | * Our event capabilities are very limited. Only a small limited |
355 | * number of events is allowed to coexist. | |
bee91169 | 356 | */ |
c6841592 | 357 | static struct efi_event efi_events[16]; |
bee91169 | 358 | |
332468f7 HS |
359 | /* |
360 | * Create an event. | |
361 | * | |
362 | * This function is used inside U-Boot code to create an event. | |
363 | * | |
364 | * For the API function implementing the CreateEvent service see | |
365 | * efi_create_event_ext. | |
366 | * | |
367 | * @type type of the event to create | |
368 | * @notify_tpl task priority level of the event | |
369 | * @notify_function notification function of the event | |
370 | * @notify_context pointer passed to the notification function | |
371 | * @event created event | |
372 | * @return status code | |
373 | */ | |
b521d29e | 374 | efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl, |
49deb455 | 375 | void (EFIAPI *notify_function) ( |
2fd945fe | 376 | struct efi_event *event, |
377 | void *context), | |
49deb455 | 378 | void *notify_context, struct efi_event **event) |
bee91169 | 379 | { |
c6841592 | 380 | int i; |
381 | ||
a95343b8 | 382 | if (event == NULL) |
49deb455 | 383 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
384 | |
385 | if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) | |
49deb455 | 386 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
387 | |
388 | if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && | |
389 | notify_function == NULL) | |
49deb455 | 390 | return EFI_INVALID_PARAMETER; |
a95343b8 | 391 | |
c6841592 | 392 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
393 | if (efi_events[i].type) | |
394 | continue; | |
395 | efi_events[i].type = type; | |
396 | efi_events[i].notify_tpl = notify_tpl; | |
397 | efi_events[i].notify_function = notify_function; | |
398 | efi_events[i].notify_context = notify_context; | |
399 | /* Disable timers on bootup */ | |
400 | efi_events[i].trigger_next = -1ULL; | |
e190e897 HS |
401 | efi_events[i].is_queued = false; |
402 | efi_events[i].is_signaled = false; | |
c6841592 | 403 | *event = &efi_events[i]; |
49deb455 | 404 | return EFI_SUCCESS; |
c6841592 | 405 | } |
49deb455 | 406 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
407 | } |
408 | ||
332468f7 HS |
409 | /* |
410 | * Create an event. | |
411 | * | |
412 | * This function implements the CreateEvent service. | |
413 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
414 | * for details. | |
415 | * | |
416 | * @type type of the event to create | |
417 | * @notify_tpl task priority level of the event | |
418 | * @notify_function notification function of the event | |
419 | * @notify_context pointer passed to the notification function | |
420 | * @event created event | |
421 | * @return status code | |
422 | */ | |
49deb455 | 423 | static efi_status_t EFIAPI efi_create_event_ext( |
b521d29e | 424 | uint32_t type, UINTN notify_tpl, |
49deb455 | 425 | void (EFIAPI *notify_function) ( |
426 | struct efi_event *event, | |
427 | void *context), | |
428 | void *notify_context, struct efi_event **event) | |
429 | { | |
430 | EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function, | |
431 | notify_context); | |
432 | return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function, | |
433 | notify_context, event)); | |
434 | } | |
435 | ||
436 | ||
bee91169 | 437 | /* |
332468f7 HS |
438 | * Check if a timer event has occurred or a queued notification function should |
439 | * be called. | |
440 | * | |
bee91169 | 441 | * Our timers have to work without interrupts, so we check whenever keyboard |
332468f7 | 442 | * input or disk accesses happen if enough time elapsed for them to fire. |
bee91169 AG |
443 | */ |
444 | void efi_timer_check(void) | |
445 | { | |
c6841592 | 446 | int i; |
bee91169 AG |
447 | u64 now = timer_get_us(); |
448 | ||
c6841592 | 449 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
ca62a4f5 HS |
450 | if (!efi_events[i].type) |
451 | continue; | |
e190e897 | 452 | if (efi_events[i].is_queued) |
ca62a4f5 HS |
453 | efi_signal_event(&efi_events[i]); |
454 | if (!(efi_events[i].type & EVT_TIMER) || | |
c6841592 | 455 | now < efi_events[i].trigger_next) |
456 | continue; | |
ca62a4f5 HS |
457 | switch (efi_events[i].trigger_type) { |
458 | case EFI_TIMER_RELATIVE: | |
459 | efi_events[i].trigger_type = EFI_TIMER_STOP; | |
460 | break; | |
461 | case EFI_TIMER_PERIODIC: | |
c6841592 | 462 | efi_events[i].trigger_next += |
8787b02e | 463 | efi_events[i].trigger_time; |
ca62a4f5 HS |
464 | break; |
465 | default: | |
466 | continue; | |
c6841592 | 467 | } |
e190e897 | 468 | efi_events[i].is_signaled = true; |
c6841592 | 469 | efi_signal_event(&efi_events[i]); |
bee91169 | 470 | } |
bee91169 AG |
471 | WATCHDOG_RESET(); |
472 | } | |
473 | ||
332468f7 HS |
474 | /* |
475 | * Set the trigger time for a timer event or stop the event. | |
476 | * | |
477 | * This is the function for internal usage in U-Boot. For the API function | |
478 | * implementing the SetTimer service see efi_set_timer_ext. | |
479 | * | |
480 | * @event event for which the timer is set | |
481 | * @type type of the timer | |
482 | * @trigger_time trigger period in multiples of 100ns | |
483 | * @return status code | |
484 | */ | |
b521d29e | 485 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 486 | uint64_t trigger_time) |
bee91169 | 487 | { |
c6841592 | 488 | int i; |
bee91169 | 489 | |
8787b02e | 490 | /* |
491 | * The parameter defines a multiple of 100ns. | |
492 | * We use multiples of 1000ns. So divide by 10. | |
493 | */ | |
7d963323 | 494 | do_div(trigger_time, 10); |
bee91169 | 495 | |
c6841592 | 496 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
497 | if (event != &efi_events[i]) | |
498 | continue; | |
bee91169 | 499 | |
c6841592 | 500 | if (!(event->type & EVT_TIMER)) |
501 | break; | |
502 | switch (type) { | |
503 | case EFI_TIMER_STOP: | |
504 | event->trigger_next = -1ULL; | |
505 | break; | |
506 | case EFI_TIMER_PERIODIC: | |
507 | case EFI_TIMER_RELATIVE: | |
508 | event->trigger_next = | |
8787b02e | 509 | timer_get_us() + trigger_time; |
c6841592 | 510 | break; |
511 | default: | |
bfc72462 | 512 | return EFI_INVALID_PARAMETER; |
c6841592 | 513 | } |
514 | event->trigger_type = type; | |
515 | event->trigger_time = trigger_time; | |
e190e897 | 516 | event->is_signaled = false; |
bfc72462 | 517 | return EFI_SUCCESS; |
bee91169 | 518 | } |
bfc72462 | 519 | return EFI_INVALID_PARAMETER; |
520 | } | |
521 | ||
332468f7 HS |
522 | /* |
523 | * Set the trigger time for a timer event or stop the event. | |
524 | * | |
525 | * This function implements the SetTimer service. | |
526 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
527 | * for details. | |
528 | * | |
529 | * @event event for which the timer is set | |
530 | * @type type of the timer | |
531 | * @trigger_time trigger period in multiples of 100ns | |
532 | * @return status code | |
533 | */ | |
b521d29e | 534 | static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event, |
535 | enum efi_timer_delay type, | |
536 | uint64_t trigger_time) | |
bfc72462 | 537 | { |
538 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
539 | return EFI_EXIT(efi_set_timer(event, type, trigger_time)); | |
bee91169 AG |
540 | } |
541 | ||
332468f7 HS |
542 | /* |
543 | * Wait for events to be signaled. | |
544 | * | |
545 | * This function implements the WaitForEvent service. | |
546 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
547 | * for details. | |
548 | * | |
549 | * @num_events number of events to be waited for | |
550 | * @events events to be waited for | |
551 | * @index index of the event that was signaled | |
552 | * @return status code | |
553 | */ | |
bee91169 | 554 | static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, |
2fd945fe | 555 | struct efi_event **event, |
ca379e1b | 556 | size_t *index) |
bee91169 | 557 | { |
c6841592 | 558 | int i, j; |
bee91169 AG |
559 | |
560 | EFI_ENTRY("%ld, %p, %p", num_events, event, index); | |
561 | ||
c6841592 | 562 | /* Check parameters */ |
563 | if (!num_events || !event) | |
564 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
32f4b2f8 HS |
565 | /* Check TPL */ |
566 | if (efi_tpl != TPL_APPLICATION) | |
567 | return EFI_EXIT(EFI_UNSUPPORTED); | |
c6841592 | 568 | for (i = 0; i < num_events; ++i) { |
569 | for (j = 0; j < ARRAY_SIZE(efi_events); ++j) { | |
570 | if (event[i] == &efi_events[j]) | |
571 | goto known_event; | |
572 | } | |
573 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
574 | known_event: | |
575 | if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL) | |
576 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
e190e897 | 577 | if (!event[i]->is_signaled) |
ca62a4f5 | 578 | efi_signal_event(event[i]); |
c6841592 | 579 | } |
580 | ||
581 | /* Wait for signal */ | |
582 | for (;;) { | |
583 | for (i = 0; i < num_events; ++i) { | |
e190e897 | 584 | if (event[i]->is_signaled) |
c6841592 | 585 | goto out; |
586 | } | |
587 | /* Allow events to occur. */ | |
588 | efi_timer_check(); | |
589 | } | |
590 | ||
591 | out: | |
592 | /* | |
593 | * Reset the signal which is passed to the caller to allow periodic | |
594 | * events to occur. | |
595 | */ | |
e190e897 | 596 | event[i]->is_signaled = false; |
c6841592 | 597 | if (index) |
598 | *index = i; | |
bee91169 AG |
599 | |
600 | return EFI_EXIT(EFI_SUCCESS); | |
601 | } | |
602 | ||
332468f7 HS |
603 | /* |
604 | * Signal an EFI event. | |
605 | * | |
606 | * This function implements the SignalEvent service. | |
607 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
608 | * for details. | |
609 | * | |
610 | * This functions sets the signaled state of the event and queues the | |
611 | * notification function for execution. | |
612 | * | |
613 | * @event event to signal | |
10a08c4e | 614 | * @return status code |
332468f7 | 615 | */ |
c6841592 | 616 | static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event) |
bee91169 | 617 | { |
c6841592 | 618 | int i; |
619 | ||
bee91169 | 620 | EFI_ENTRY("%p", event); |
c6841592 | 621 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
622 | if (event != &efi_events[i]) | |
623 | continue; | |
e190e897 | 624 | if (event->is_signaled) |
ca62a4f5 | 625 | break; |
e190e897 | 626 | event->is_signaled = true; |
ca62a4f5 HS |
627 | if (event->type & EVT_NOTIFY_SIGNAL) |
628 | efi_signal_event(event); | |
c6841592 | 629 | break; |
630 | } | |
bee91169 AG |
631 | return EFI_EXIT(EFI_SUCCESS); |
632 | } | |
633 | ||
332468f7 HS |
634 | /* |
635 | * Close an EFI event. | |
636 | * | |
637 | * This function implements the CloseEvent service. | |
638 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
639 | * for details. | |
640 | * | |
641 | * @event event to close | |
642 | * @return status code | |
643 | */ | |
2fd945fe | 644 | static efi_status_t EFIAPI efi_close_event(struct efi_event *event) |
bee91169 | 645 | { |
c6841592 | 646 | int i; |
647 | ||
bee91169 | 648 | EFI_ENTRY("%p", event); |
c6841592 | 649 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
650 | if (event == &efi_events[i]) { | |
651 | event->type = 0; | |
652 | event->trigger_next = -1ULL; | |
e190e897 HS |
653 | event->is_queued = false; |
654 | event->is_signaled = false; | |
c6841592 | 655 | return EFI_EXIT(EFI_SUCCESS); |
656 | } | |
657 | } | |
658 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
659 | } |
660 | ||
332468f7 HS |
661 | /* |
662 | * Check if an event is signaled. | |
663 | * | |
664 | * This function implements the CheckEvent service. | |
665 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
666 | * for details. | |
667 | * | |
668 | * If an event is not signaled yet the notification function is queued. | |
669 | * | |
670 | * @event event to check | |
671 | * @return status code | |
672 | */ | |
2fd945fe | 673 | static efi_status_t EFIAPI efi_check_event(struct efi_event *event) |
bee91169 | 674 | { |
c6841592 | 675 | int i; |
676 | ||
bee91169 | 677 | EFI_ENTRY("%p", event); |
c6841592 | 678 | efi_timer_check(); |
679 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
680 | if (event != &efi_events[i]) | |
681 | continue; | |
682 | if (!event->type || event->type & EVT_NOTIFY_SIGNAL) | |
683 | break; | |
e190e897 | 684 | if (!event->is_signaled) |
ca62a4f5 | 685 | efi_signal_event(event); |
e190e897 | 686 | if (event->is_signaled) |
c6841592 | 687 | return EFI_EXIT(EFI_SUCCESS); |
688 | return EFI_EXIT(EFI_NOT_READY); | |
689 | } | |
690 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
691 | } |
692 | ||
332468f7 HS |
693 | /* |
694 | * Install protocol interface. | |
695 | * | |
696 | * This is the function for internal calls. For the API implementation of the | |
697 | * InstallProtocolInterface service see function | |
698 | * efi_install_protocol_interface_ext. | |
699 | * | |
700 | * @handle handle on which the protocol shall be installed | |
701 | * @protocol GUID of the protocol to be installed | |
702 | * @protocol_interface_type type of the interface to be installed, | |
703 | * always EFI_NATIVE_INTERFACE | |
704 | * @protocol_interface interface of the protocol implementation | |
705 | * @return status code | |
706 | */ | |
bee91169 | 707 | static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, |
5a9682d0 | 708 | const efi_guid_t *protocol, int protocol_interface_type, |
bee91169 AG |
709 | void *protocol_interface) |
710 | { | |
e0549f8a | 711 | struct list_head *lhandle; |
712 | int i; | |
713 | efi_status_t r; | |
714 | ||
e0549f8a | 715 | if (!handle || !protocol || |
716 | protocol_interface_type != EFI_NATIVE_INTERFACE) { | |
717 | r = EFI_INVALID_PARAMETER; | |
718 | goto out; | |
719 | } | |
720 | ||
721 | /* Create new handle if requested. */ | |
722 | if (!*handle) { | |
3cc6e3fe HS |
723 | r = efi_create_handle(handle); |
724 | if (r != EFI_SUCCESS) | |
725 | goto out; | |
e0549f8a | 726 | } |
727 | /* Find object. */ | |
728 | list_for_each(lhandle, &efi_obj_list) { | |
729 | struct efi_object *efiobj; | |
730 | efiobj = list_entry(lhandle, struct efi_object, link); | |
731 | ||
732 | if (efiobj->handle != *handle) | |
733 | continue; | |
734 | /* Check if protocol is already installed on the handle. */ | |
735 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
736 | struct efi_handler *handler = &efiobj->protocols[i]; | |
737 | ||
738 | if (!handler->guid) | |
739 | continue; | |
740 | if (!guidcmp(handler->guid, protocol)) { | |
741 | r = EFI_INVALID_PARAMETER; | |
742 | goto out; | |
743 | } | |
744 | } | |
745 | /* Install protocol in first empty slot. */ | |
746 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
747 | struct efi_handler *handler = &efiobj->protocols[i]; | |
748 | ||
749 | if (handler->guid) | |
750 | continue; | |
751 | ||
752 | handler->guid = protocol; | |
753 | handler->protocol_interface = protocol_interface; | |
754 | r = EFI_SUCCESS; | |
755 | goto out; | |
756 | } | |
757 | r = EFI_OUT_OF_RESOURCES; | |
758 | goto out; | |
759 | } | |
760 | r = EFI_INVALID_PARAMETER; | |
761 | out: | |
8bee5a3c | 762 | return r; |
763 | } | |
764 | ||
332468f7 HS |
765 | /* |
766 | * Install protocol interface. | |
767 | * | |
768 | * This function implements the InstallProtocolInterface service. | |
769 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
770 | * for details. | |
771 | * | |
772 | * @handle handle on which the protocol shall be installed | |
773 | * @protocol GUID of the protocol to be installed | |
774 | * @protocol_interface_type type of the interface to be installed, | |
775 | * always EFI_NATIVE_INTERFACE | |
776 | * @protocol_interface interface of the protocol implementation | |
777 | * @return status code | |
778 | */ | |
8bee5a3c | 779 | static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle, |
5a9682d0 | 780 | const efi_guid_t *protocol, int protocol_interface_type, |
8bee5a3c | 781 | void *protocol_interface) |
782 | { | |
778e6af8 | 783 | EFI_ENTRY("%p, %pUl, %d, %p", handle, protocol, protocol_interface_type, |
8bee5a3c | 784 | protocol_interface); |
785 | ||
786 | return EFI_EXIT(efi_install_protocol_interface(handle, protocol, | |
787 | protocol_interface_type, | |
788 | protocol_interface)); | |
bee91169 | 789 | } |
e0549f8a | 790 | |
332468f7 HS |
791 | /* |
792 | * Reinstall protocol interface. | |
793 | * | |
794 | * This function implements the ReinstallProtocolInterface service. | |
795 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
796 | * for details. | |
797 | * | |
798 | * @handle handle on which the protocol shall be | |
799 | * reinstalled | |
800 | * @protocol GUID of the protocol to be installed | |
801 | * @old_interface interface to be removed | |
802 | * @new_interface interface to be installed | |
803 | * @return status code | |
804 | */ | |
bee91169 | 805 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, |
5a9682d0 | 806 | const efi_guid_t *protocol, void *old_interface, |
bee91169 AG |
807 | void *new_interface) |
808 | { | |
778e6af8 | 809 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface, |
bee91169 AG |
810 | new_interface); |
811 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
812 | } | |
813 | ||
332468f7 HS |
814 | /* |
815 | * Uninstall protocol interface. | |
816 | * | |
817 | * This is the function for internal calls. For the API implementation of the | |
818 | * UninstallProtocolInterface service see function | |
819 | * efi_uninstall_protocol_interface_ext. | |
820 | * | |
821 | * @handle handle from which the protocol shall be removed | |
822 | * @protocol GUID of the protocol to be removed | |
823 | * @protocol_interface interface to be removed | |
824 | * @return status code | |
825 | */ | |
bee91169 | 826 | static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, |
5a9682d0 | 827 | const efi_guid_t *protocol, void *protocol_interface) |
bee91169 | 828 | { |
4b6ed0d7 | 829 | struct list_head *lhandle; |
830 | int i; | |
831 | efi_status_t r = EFI_NOT_FOUND; | |
832 | ||
4b6ed0d7 | 833 | if (!handle || !protocol) { |
834 | r = EFI_INVALID_PARAMETER; | |
835 | goto out; | |
836 | } | |
837 | ||
838 | list_for_each(lhandle, &efi_obj_list) { | |
839 | struct efi_object *efiobj; | |
840 | efiobj = list_entry(lhandle, struct efi_object, link); | |
841 | ||
842 | if (efiobj->handle != handle) | |
843 | continue; | |
844 | ||
845 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
846 | struct efi_handler *handler = &efiobj->protocols[i]; | |
847 | const efi_guid_t *hprotocol = handler->guid; | |
848 | ||
849 | if (!hprotocol) | |
850 | continue; | |
851 | if (!guidcmp(hprotocol, protocol)) { | |
852 | if (handler->protocol_interface) { | |
853 | r = EFI_ACCESS_DENIED; | |
854 | } else { | |
855 | handler->guid = 0; | |
856 | r = EFI_SUCCESS; | |
857 | } | |
858 | goto out; | |
859 | } | |
860 | } | |
861 | } | |
862 | ||
863 | out: | |
3d8e1456 | 864 | return r; |
865 | } | |
866 | ||
332468f7 HS |
867 | /* |
868 | * Uninstall protocol interface. | |
869 | * | |
870 | * This function implements the UninstallProtocolInterface service. | |
871 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
872 | * for details. | |
873 | * | |
874 | * @handle handle from which the protocol shall be removed | |
875 | * @protocol GUID of the protocol to be removed | |
876 | * @protocol_interface interface to be removed | |
877 | * @return status code | |
878 | */ | |
3d8e1456 | 879 | static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle, |
5a9682d0 | 880 | const efi_guid_t *protocol, void *protocol_interface) |
3d8e1456 | 881 | { |
778e6af8 | 882 | EFI_ENTRY("%p, %pUl, %p", handle, protocol, protocol_interface); |
3d8e1456 | 883 | |
884 | return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol, | |
885 | protocol_interface)); | |
bee91169 AG |
886 | } |
887 | ||
332468f7 HS |
888 | /* |
889 | * Register an event for notification when a protocol is installed. | |
890 | * | |
891 | * This function implements the RegisterProtocolNotify service. | |
892 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
893 | * for details. | |
894 | * | |
895 | * @protocol GUID of the protocol whose installation shall be | |
896 | * notified | |
897 | * @event event to be signaled upon installation of the protocol | |
898 | * @registration key for retrieving the registration information | |
899 | * @return status code | |
900 | */ | |
5a9682d0 HS |
901 | static efi_status_t EFIAPI efi_register_protocol_notify( |
902 | const efi_guid_t *protocol, | |
903 | struct efi_event *event, | |
904 | void **registration) | |
bee91169 | 905 | { |
778e6af8 | 906 | EFI_ENTRY("%pUl, %p, %p", protocol, event, registration); |
bee91169 AG |
907 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); |
908 | } | |
909 | ||
332468f7 HS |
910 | /* |
911 | * Determine if an EFI handle implements a protocol. | |
912 | * | |
913 | * See the documentation of the LocateHandle service in the UEFI specification. | |
914 | * | |
915 | * @search_type selection criterion | |
916 | * @protocol GUID of the protocol | |
917 | * @search_key registration key | |
918 | * @efiobj handle | |
919 | * @return 0 if the handle implements the protocol | |
920 | */ | |
bee91169 | 921 | static int efi_search(enum efi_locate_search_type search_type, |
5a9682d0 | 922 | const efi_guid_t *protocol, void *search_key, |
bee91169 AG |
923 | struct efi_object *efiobj) |
924 | { | |
925 | int i; | |
926 | ||
927 | switch (search_type) { | |
928 | case all_handles: | |
929 | return 0; | |
930 | case by_register_notify: | |
931 | return -1; | |
932 | case by_protocol: | |
933 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
934 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
935 | if (guid && !guidcmp(guid, protocol)) | |
936 | return 0; | |
937 | } | |
938 | return -1; | |
939 | } | |
940 | ||
941 | return -1; | |
942 | } | |
943 | ||
332468f7 HS |
944 | /* |
945 | * Locate handles implementing a protocol. | |
946 | * | |
947 | * This function is meant for U-Boot internal calls. For the API implementation | |
948 | * of the LocateHandle service see efi_locate_handle_ext. | |
949 | * | |
950 | * @search_type selection criterion | |
951 | * @protocol GUID of the protocol | |
952 | * @search_key registration key | |
953 | * @buffer_size size of the buffer to receive the handles in bytes | |
954 | * @buffer buffer to receive the relevant handles | |
955 | * @return status code | |
956 | */ | |
ebf199b9 | 957 | static efi_status_t efi_locate_handle( |
bee91169 | 958 | enum efi_locate_search_type search_type, |
5a9682d0 | 959 | const efi_guid_t *protocol, void *search_key, |
bee91169 AG |
960 | unsigned long *buffer_size, efi_handle_t *buffer) |
961 | { | |
962 | struct list_head *lhandle; | |
963 | unsigned long size = 0; | |
964 | ||
bee91169 AG |
965 | /* Count how much space we need */ |
966 | list_for_each(lhandle, &efi_obj_list) { | |
967 | struct efi_object *efiobj; | |
968 | efiobj = list_entry(lhandle, struct efi_object, link); | |
969 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
970 | size += sizeof(void*); | |
971 | } | |
972 | } | |
973 | ||
974 | if (*buffer_size < size) { | |
975 | *buffer_size = size; | |
26329584 | 976 | return EFI_BUFFER_TOO_SMALL; |
bee91169 AG |
977 | } |
978 | ||
796a78cb RC |
979 | *buffer_size = size; |
980 | if (size == 0) | |
981 | return EFI_NOT_FOUND; | |
982 | ||
bee91169 AG |
983 | /* Then fill the array */ |
984 | list_for_each(lhandle, &efi_obj_list) { | |
985 | struct efi_object *efiobj; | |
986 | efiobj = list_entry(lhandle, struct efi_object, link); | |
987 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
988 | *(buffer++) = efiobj->handle; | |
989 | } | |
990 | } | |
991 | ||
26329584 | 992 | return EFI_SUCCESS; |
993 | } | |
994 | ||
332468f7 HS |
995 | /* |
996 | * Locate handles implementing a protocol. | |
997 | * | |
998 | * This function implements the LocateHandle service. | |
999 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1000 | * for details. | |
1001 | * | |
1002 | * @search_type selection criterion | |
1003 | * @protocol GUID of the protocol | |
1004 | * @search_key registration key | |
1005 | * @buffer_size size of the buffer to receive the handles in bytes | |
1006 | * @buffer buffer to receive the relevant handles | |
1007 | * @return 0 if the handle implements the protocol | |
1008 | */ | |
26329584 | 1009 | static efi_status_t EFIAPI efi_locate_handle_ext( |
1010 | enum efi_locate_search_type search_type, | |
5a9682d0 | 1011 | const efi_guid_t *protocol, void *search_key, |
26329584 | 1012 | unsigned long *buffer_size, efi_handle_t *buffer) |
1013 | { | |
778e6af8 | 1014 | EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key, |
26329584 | 1015 | buffer_size, buffer); |
1016 | ||
1017 | return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key, | |
1018 | buffer_size, buffer)); | |
bee91169 AG |
1019 | } |
1020 | ||
332468f7 HS |
1021 | /* |
1022 | * Get the device path and handle of an device implementing a protocol. | |
1023 | * | |
1024 | * This function implements the LocateDevicePath service. | |
1025 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1026 | * for details. | |
1027 | * | |
1028 | * @protocol GUID of the protocol | |
1029 | * @device_path device path | |
1030 | * @device handle of the device | |
1031 | * @return status code | |
1032 | */ | |
5a9682d0 HS |
1033 | static efi_status_t EFIAPI efi_locate_device_path( |
1034 | const efi_guid_t *protocol, | |
bee91169 AG |
1035 | struct efi_device_path **device_path, |
1036 | efi_handle_t *device) | |
1037 | { | |
b66c60dd RC |
1038 | struct efi_object *efiobj; |
1039 | ||
1040 | EFI_ENTRY("%pUl, %p, %p", protocol, device_path, device); | |
1041 | ||
1042 | efiobj = efi_dp_find_obj(*device_path, device_path); | |
1043 | if (!efiobj) | |
1044 | return EFI_EXIT(EFI_NOT_FOUND); | |
1045 | ||
1046 | *device = efiobj->handle; | |
1047 | ||
1048 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
1049 | } |
1050 | ||
d98cdf6a AG |
1051 | /* Collapses configuration table entries, removing index i */ |
1052 | static void efi_remove_configuration_table(int i) | |
1053 | { | |
1054 | struct efi_configuration_table *this = &efi_conf_table[i]; | |
1055 | struct efi_configuration_table *next = &efi_conf_table[i+1]; | |
1056 | struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables]; | |
1057 | ||
1058 | memmove(this, next, (ulong)end - (ulong)next); | |
1059 | systab.nr_tables--; | |
1060 | } | |
1061 | ||
332468f7 HS |
1062 | /* |
1063 | * Adds, updates, or removes a configuration table. | |
1064 | * | |
1065 | * This function is used for internal calls. For the API implementation of the | |
1066 | * InstallConfigurationTable service see efi_install_configuration_table_ext. | |
1067 | * | |
1068 | * @guid GUID of the installed table | |
1069 | * @table table to be installed | |
1070 | * @return status code | |
1071 | */ | |
488bf12d | 1072 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) |
bee91169 AG |
1073 | { |
1074 | int i; | |
1075 | ||
bee91169 AG |
1076 | /* Check for guid override */ |
1077 | for (i = 0; i < systab.nr_tables; i++) { | |
1078 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
d98cdf6a AG |
1079 | if (table) |
1080 | efi_conf_table[i].table = table; | |
1081 | else | |
1082 | efi_remove_configuration_table(i); | |
488bf12d | 1083 | return EFI_SUCCESS; |
bee91169 AG |
1084 | } |
1085 | } | |
1086 | ||
d98cdf6a AG |
1087 | if (!table) |
1088 | return EFI_NOT_FOUND; | |
1089 | ||
bee91169 AG |
1090 | /* No override, check for overflow */ |
1091 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
488bf12d | 1092 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
1093 | |
1094 | /* Add a new entry */ | |
1095 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
1096 | efi_conf_table[i].table = table; | |
aba5e919 | 1097 | systab.nr_tables = i + 1; |
bee91169 | 1098 | |
488bf12d AG |
1099 | return EFI_SUCCESS; |
1100 | } | |
1101 | ||
332468f7 HS |
1102 | /* |
1103 | * Adds, updates, or removes a configuration table. | |
1104 | * | |
1105 | * This function implements the InstallConfigurationTable service. | |
1106 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1107 | * for details. | |
1108 | * | |
1109 | * @guid GUID of the installed table | |
1110 | * @table table to be installed | |
1111 | * @return status code | |
1112 | */ | |
488bf12d AG |
1113 | static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, |
1114 | void *table) | |
1115 | { | |
778e6af8 | 1116 | EFI_ENTRY("%pUl, %p", guid, table); |
488bf12d | 1117 | return EFI_EXIT(efi_install_configuration_table(guid, table)); |
bee91169 AG |
1118 | } |
1119 | ||
332468f7 HS |
1120 | /* |
1121 | * Initialize a loaded_image_info + loaded_image_info object with correct | |
95c5553e | 1122 | * protocols, boot-device, etc. |
332468f7 | 1123 | * |
10a08c4e | 1124 | * @info loaded image info to be passed to the entry point of the |
332468f7 HS |
1125 | * image |
1126 | * @obj internal object associated with the loaded image | |
1127 | * @device_path device path of the loaded image | |
1128 | * @file_path file path of the loaded image | |
95c5553e RC |
1129 | */ |
1130 | void efi_setup_loaded_image(struct efi_loaded_image *info, struct efi_object *obj, | |
1131 | struct efi_device_path *device_path, | |
1132 | struct efi_device_path *file_path) | |
1133 | { | |
1134 | obj->handle = info; | |
1135 | ||
1136 | /* | |
1137 | * When asking for the device path interface, return | |
1138 | * bootefi_device_path | |
1139 | */ | |
1140 | obj->protocols[0].guid = &efi_guid_device_path; | |
1141 | obj->protocols[0].protocol_interface = device_path; | |
1142 | ||
1143 | /* | |
1144 | * When asking for the loaded_image interface, just | |
1145 | * return handle which points to loaded_image_info | |
1146 | */ | |
1147 | obj->protocols[1].guid = &efi_guid_loaded_image; | |
1148 | obj->protocols[1].protocol_interface = info; | |
1149 | ||
1150 | obj->protocols[2].guid = &efi_guid_console_control; | |
1151 | obj->protocols[2].protocol_interface = (void *)&efi_console_control; | |
1152 | ||
1153 | obj->protocols[3].guid = &efi_guid_device_path_to_text_protocol; | |
1154 | obj->protocols[3].protocol_interface = | |
1155 | (void *)&efi_device_path_to_text; | |
1156 | ||
1157 | info->file_path = file_path; | |
1a2c8d2f HS |
1158 | if (device_path) |
1159 | info->device_handle = efi_dp_find_obj(device_path, NULL); | |
95c5553e RC |
1160 | |
1161 | list_add_tail(&obj->link, &efi_obj_list); | |
1162 | } | |
1163 | ||
332468f7 HS |
1164 | /* |
1165 | * Load an image using a file path. | |
1166 | * | |
1167 | * @file_path the path of the image to load | |
1168 | * @buffer buffer containing the loaded image | |
10a08c4e | 1169 | * @return status code |
332468f7 | 1170 | */ |
9975fe96 RC |
1171 | efi_status_t efi_load_image_from_path(struct efi_device_path *file_path, |
1172 | void **buffer) | |
838ee4b4 RC |
1173 | { |
1174 | struct efi_file_info *info = NULL; | |
1175 | struct efi_file_handle *f; | |
1176 | static efi_status_t ret; | |
1177 | uint64_t bs; | |
1178 | ||
1179 | f = efi_file_from_path(file_path); | |
1180 | if (!f) | |
1181 | return EFI_DEVICE_ERROR; | |
1182 | ||
1183 | bs = 0; | |
1184 | EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid, | |
1185 | &bs, info)); | |
1186 | if (ret == EFI_BUFFER_TOO_SMALL) { | |
1187 | info = malloc(bs); | |
1188 | EFI_CALL(ret = f->getinfo(f, (efi_guid_t *)&efi_file_info_guid, | |
1189 | &bs, info)); | |
1190 | } | |
1191 | if (ret != EFI_SUCCESS) | |
1192 | goto error; | |
1193 | ||
1194 | ret = efi_allocate_pool(EFI_LOADER_DATA, info->file_size, buffer); | |
1195 | if (ret) | |
1196 | goto error; | |
1197 | ||
1198 | EFI_CALL(ret = f->read(f, &info->file_size, *buffer)); | |
1199 | ||
1200 | error: | |
1201 | free(info); | |
1202 | EFI_CALL(f->close(f)); | |
1203 | ||
1204 | if (ret != EFI_SUCCESS) { | |
1205 | efi_free_pool(*buffer); | |
1206 | *buffer = NULL; | |
1207 | } | |
1208 | ||
1209 | return ret; | |
1210 | } | |
1211 | ||
332468f7 HS |
1212 | /* |
1213 | * Load an EFI image into memory. | |
1214 | * | |
1215 | * This function implements the LoadImage service. | |
1216 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1217 | * for details. | |
1218 | * | |
1219 | * @boot_policy true for request originating from the boot manager | |
1220 | * @parent_image the calles's image handle | |
1221 | * @file_path the path of the image to load | |
1222 | * @source_buffer memory location from which the image is installed | |
1223 | * @source_size size of the memory area from which the image is | |
1224 | * installed | |
1225 | * @image_handle handle for the newly installed image | |
1226 | * @return status code | |
1227 | */ | |
bee91169 AG |
1228 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, |
1229 | efi_handle_t parent_image, | |
1230 | struct efi_device_path *file_path, | |
1231 | void *source_buffer, | |
1232 | unsigned long source_size, | |
1233 | efi_handle_t *image_handle) | |
1234 | { | |
bee91169 AG |
1235 | struct efi_loaded_image *info; |
1236 | struct efi_object *obj; | |
1237 | ||
1238 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
1239 | file_path, source_buffer, source_size, image_handle); | |
838ee4b4 RC |
1240 | |
1241 | info = calloc(1, sizeof(*info)); | |
1242 | obj = calloc(1, sizeof(*obj)); | |
1243 | ||
1244 | if (!source_buffer) { | |
1245 | struct efi_device_path *dp, *fp; | |
1246 | efi_status_t ret; | |
1247 | ||
9975fe96 | 1248 | ret = efi_load_image_from_path(file_path, &source_buffer); |
838ee4b4 RC |
1249 | if (ret != EFI_SUCCESS) { |
1250 | free(info); | |
1251 | free(obj); | |
1252 | return EFI_EXIT(ret); | |
1253 | } | |
1254 | ||
1255 | /* | |
1256 | * split file_path which contains both the device and | |
1257 | * file parts: | |
1258 | */ | |
1259 | efi_dp_split_file_path(file_path, &dp, &fp); | |
1260 | ||
1261 | efi_setup_loaded_image(info, obj, dp, fp); | |
1262 | } else { | |
1263 | /* In this case, file_path is the "device" path, ie. | |
1264 | * something like a HARDWARE_DEVICE:MEMORY_MAPPED | |
1265 | */ | |
1266 | efi_setup_loaded_image(info, obj, file_path, NULL); | |
1267 | } | |
1268 | ||
bee91169 AG |
1269 | info->reserved = efi_load_pe(source_buffer, info); |
1270 | if (!info->reserved) { | |
1271 | free(info); | |
1272 | free(obj); | |
1273 | return EFI_EXIT(EFI_UNSUPPORTED); | |
1274 | } | |
1275 | ||
1276 | *image_handle = info; | |
bee91169 AG |
1277 | |
1278 | return EFI_EXIT(EFI_SUCCESS); | |
1279 | } | |
1280 | ||
332468f7 HS |
1281 | /* |
1282 | * Call the entry point of an image. | |
1283 | * | |
1284 | * This function implements the StartImage service. | |
1285 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1286 | * for details. | |
1287 | * | |
1288 | * @image_handle handle of the image | |
1289 | * @exit_data_size size of the buffer | |
1290 | * @exit_data buffer to receive the exit data of the called image | |
10a08c4e | 1291 | * @return status code |
332468f7 | 1292 | */ |
bee91169 AG |
1293 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, |
1294 | unsigned long *exit_data_size, | |
1295 | s16 **exit_data) | |
1296 | { | |
1297 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
1298 | struct efi_loaded_image *info = image_handle; | |
1299 | ||
1300 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
1301 | entry = info->reserved; | |
1302 | ||
1303 | efi_is_direct_boot = false; | |
1304 | ||
1305 | /* call the image! */ | |
a86aeaf2 AG |
1306 | if (setjmp(&info->exit_jmp)) { |
1307 | /* We returned from the child image */ | |
1308 | return EFI_EXIT(info->exit_status); | |
1309 | } | |
1310 | ||
af65db85 | 1311 | __efi_nesting_dec(); |
c160d2f5 | 1312 | __efi_exit_check(); |
bee91169 | 1313 | entry(image_handle, &systab); |
c160d2f5 | 1314 | __efi_entry_check(); |
af65db85 | 1315 | __efi_nesting_inc(); |
bee91169 AG |
1316 | |
1317 | /* Should usually never get here */ | |
1318 | return EFI_EXIT(EFI_SUCCESS); | |
1319 | } | |
1320 | ||
332468f7 HS |
1321 | /* |
1322 | * Leave an EFI application or driver. | |
1323 | * | |
1324 | * This function implements the Exit service. | |
1325 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1326 | * for details. | |
1327 | * | |
1328 | * @image_handle handle of the application or driver that is exiting | |
1329 | * @exit_status status code | |
1330 | * @exit_data_size size of the buffer in bytes | |
1331 | * @exit_data buffer with data describing an error | |
10a08c4e | 1332 | * @return status code |
332468f7 | 1333 | */ |
a86aeaf2 AG |
1334 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
1335 | efi_status_t exit_status, unsigned long exit_data_size, | |
1336 | int16_t *exit_data) | |
bee91169 | 1337 | { |
a86aeaf2 AG |
1338 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
1339 | ||
bee91169 AG |
1340 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
1341 | exit_data_size, exit_data); | |
a86aeaf2 | 1342 | |
a148920e | 1343 | /* Make sure entry/exit counts for EFI world cross-overs match */ |
da94073b HS |
1344 | __efi_exit_check(); |
1345 | ||
a148920e AG |
1346 | /* |
1347 | * But longjmp out with the U-Boot gd, not the application's, as | |
1348 | * the other end is a setjmp call inside EFI context. | |
1349 | */ | |
1350 | efi_restore_gd(); | |
1351 | ||
a86aeaf2 | 1352 | loaded_image_info->exit_status = exit_status; |
692fcdd8 | 1353 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
1354 | |
1355 | panic("EFI application exited"); | |
bee91169 AG |
1356 | } |
1357 | ||
332468f7 HS |
1358 | /* |
1359 | * Find the internal EFI object for a handle. | |
1360 | * | |
1361 | * @handle handle to find | |
1362 | * @return EFI object | |
1363 | */ | |
bee91169 AG |
1364 | static struct efi_object *efi_search_obj(void *handle) |
1365 | { | |
1366 | struct list_head *lhandle; | |
1367 | ||
1368 | list_for_each(lhandle, &efi_obj_list) { | |
1369 | struct efi_object *efiobj; | |
1370 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1371 | if (efiobj->handle == handle) | |
1372 | return efiobj; | |
1373 | } | |
1374 | ||
1375 | return NULL; | |
1376 | } | |
1377 | ||
332468f7 HS |
1378 | /* |
1379 | * Unload an EFI image. | |
1380 | * | |
1381 | * This function implements the UnloadImage service. | |
1382 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1383 | * for details. | |
1384 | * | |
1385 | * @image_handle handle of the image to be unloaded | |
1386 | * @return status code | |
1387 | */ | |
bee91169 AG |
1388 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) |
1389 | { | |
1390 | struct efi_object *efiobj; | |
1391 | ||
1392 | EFI_ENTRY("%p", image_handle); | |
1393 | efiobj = efi_search_obj(image_handle); | |
1394 | if (efiobj) | |
1395 | list_del(&efiobj->link); | |
1396 | ||
1397 | return EFI_EXIT(EFI_SUCCESS); | |
1398 | } | |
1399 | ||
332468f7 HS |
1400 | /* |
1401 | * Fix up caches for EFI payloads if necessary. | |
1402 | */ | |
bee91169 AG |
1403 | static void efi_exit_caches(void) |
1404 | { | |
1405 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
1406 | /* | |
1407 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
1408 | * a zImage, but does not know of all cache layers. Give it a hand. | |
1409 | */ | |
1410 | if (efi_is_direct_boot) | |
1411 | cleanup_before_linux(); | |
1412 | #endif | |
1413 | } | |
1414 | ||
332468f7 HS |
1415 | /* |
1416 | * Stop boot services. | |
1417 | * | |
1418 | * This function implements the ExitBootServices service. | |
1419 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1420 | * for details. | |
1421 | * | |
1422 | * @image_handle handle of the loaded image | |
1423 | * @map_key key of the memory map | |
1424 | * @return status code | |
1425 | */ | |
bee91169 AG |
1426 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, |
1427 | unsigned long map_key) | |
1428 | { | |
152a263c HS |
1429 | int i; |
1430 | ||
bee91169 AG |
1431 | EFI_ENTRY("%p, %ld", image_handle, map_key); |
1432 | ||
152a263c HS |
1433 | /* Notify that ExitBootServices is invoked. */ |
1434 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
1435 | if (efi_events[i].type != EVT_SIGNAL_EXIT_BOOT_SERVICES) | |
1436 | continue; | |
1437 | efi_signal_event(&efi_events[i]); | |
1438 | } | |
1439 | /* Make sure that notification functions are not called anymore */ | |
1440 | efi_tpl = TPL_HIGH_LEVEL; | |
1441 | ||
ad644e7c RC |
1442 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
1443 | /* save any EFI variables that have been written: */ | |
1444 | env_save(); | |
1445 | #endif | |
1446 | ||
b7b8410a AG |
1447 | board_quiesce_devices(); |
1448 | ||
bee91169 AG |
1449 | /* Fix up caches for EFI payloads if necessary */ |
1450 | efi_exit_caches(); | |
1451 | ||
1452 | /* This stops all lingering devices */ | |
1453 | bootm_disable_interrupts(); | |
1454 | ||
1455 | /* Give the payload some time to boot */ | |
1456 | WATCHDOG_RESET(); | |
1457 | ||
1458 | return EFI_EXIT(EFI_SUCCESS); | |
1459 | } | |
1460 | ||
332468f7 HS |
1461 | /* |
1462 | * Get next value of the counter. | |
1463 | * | |
1464 | * This function implements the NextMonotonicCount service. | |
1465 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1466 | * for details. | |
1467 | * | |
1468 | * @count returned value of the counter | |
1469 | * @return status code | |
1470 | */ | |
bee91169 AG |
1471 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) |
1472 | { | |
1473 | static uint64_t mono = 0; | |
1474 | EFI_ENTRY("%p", count); | |
1475 | *count = mono++; | |
1476 | return EFI_EXIT(EFI_SUCCESS); | |
1477 | } | |
1478 | ||
332468f7 HS |
1479 | /* |
1480 | * Sleep. | |
1481 | * | |
1482 | * This function implements the Stall sercive. | |
1483 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1484 | * for details. | |
1485 | * | |
1486 | * @microseconds period to sleep in microseconds | |
1487 | * @return status code | |
1488 | */ | |
bee91169 AG |
1489 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) |
1490 | { | |
1491 | EFI_ENTRY("%ld", microseconds); | |
1492 | udelay(microseconds); | |
1493 | return EFI_EXIT(EFI_SUCCESS); | |
1494 | } | |
1495 | ||
332468f7 HS |
1496 | /* |
1497 | * Reset the watchdog timer. | |
1498 | * | |
1499 | * This function implements the WatchdogTimer service. | |
1500 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1501 | * for details. | |
1502 | * | |
1503 | * @timeout seconds before reset by watchdog | |
1504 | * @watchdog_code code to be logged when resetting | |
1505 | * @data_size size of buffer in bytes | |
1506 | * @watchdog_data buffer with data describing the reset reason | |
10a08c4e | 1507 | * @return status code |
332468f7 | 1508 | */ |
bee91169 AG |
1509 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, |
1510 | uint64_t watchdog_code, | |
1511 | unsigned long data_size, | |
1512 | uint16_t *watchdog_data) | |
1513 | { | |
1514 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
1515 | data_size, watchdog_data); | |
b5104821 | 1516 | return efi_unsupported(__func__); |
bee91169 AG |
1517 | } |
1518 | ||
332468f7 HS |
1519 | /* |
1520 | * Connect a controller to a driver. | |
1521 | * | |
1522 | * This function implements the ConnectController 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 | * @remain_device_path device path of a child controller | |
1529 | * @recursive true to connect all child controllers | |
1530 | * @return status code | |
1531 | */ | |
bee91169 AG |
1532 | static efi_status_t EFIAPI efi_connect_controller( |
1533 | efi_handle_t controller_handle, | |
1534 | efi_handle_t *driver_image_handle, | |
1535 | struct efi_device_path *remain_device_path, | |
1536 | bool recursive) | |
1537 | { | |
1538 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
1539 | remain_device_path, recursive); | |
1540 | return EFI_EXIT(EFI_NOT_FOUND); | |
1541 | } | |
1542 | ||
332468f7 HS |
1543 | /* |
1544 | * Disconnect a controller from a driver. | |
1545 | * | |
1546 | * This function implements the DisconnectController service. | |
1547 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1548 | * for details. | |
1549 | * | |
1550 | * @controller_handle handle of the controller | |
1551 | * @driver_image_handle handle of the driver | |
1552 | * @child_handle handle of the child to destroy | |
1553 | * @return status code | |
1554 | */ | |
bee91169 AG |
1555 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, |
1556 | void *driver_image_handle, | |
1557 | void *child_handle) | |
1558 | { | |
1559 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
1560 | child_handle); | |
1561 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1562 | } | |
1563 | ||
332468f7 HS |
1564 | /* |
1565 | * Close a protocol. | |
1566 | * | |
1567 | * This function implements the CloseProtocol service. | |
1568 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1569 | * for details. | |
1570 | * | |
1571 | * @handle handle on which the protocol shall be closed | |
1572 | * @protocol GUID of the protocol to close | |
1573 | * @agent_handle handle of the driver | |
1574 | * @controller_handle handle of the controller | |
1575 | * @return status code | |
1576 | */ | |
bee91169 | 1577 | static efi_status_t EFIAPI efi_close_protocol(void *handle, |
5a9682d0 | 1578 | const efi_guid_t *protocol, |
bee91169 AG |
1579 | void *agent_handle, |
1580 | void *controller_handle) | |
1581 | { | |
778e6af8 | 1582 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, agent_handle, |
bee91169 AG |
1583 | controller_handle); |
1584 | return EFI_EXIT(EFI_NOT_FOUND); | |
1585 | } | |
1586 | ||
332468f7 HS |
1587 | /* |
1588 | * Provide information about then open status of a protocol on a handle | |
1589 | * | |
1590 | * This function implements the OpenProtocolInformation service. | |
1591 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1592 | * for details. | |
1593 | * | |
1594 | * @handle handle for which the information shall be retrieved | |
1595 | * @protocol GUID of the protocol | |
1596 | * @entry_buffer buffer to receive the open protocol information | |
1597 | * @entry_count number of entries available in the buffer | |
1598 | * @return status code | |
1599 | */ | |
bee91169 | 1600 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, |
5a9682d0 | 1601 | const efi_guid_t *protocol, |
bee91169 AG |
1602 | struct efi_open_protocol_info_entry **entry_buffer, |
1603 | unsigned long *entry_count) | |
1604 | { | |
778e6af8 | 1605 | EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, entry_buffer, |
bee91169 AG |
1606 | entry_count); |
1607 | return EFI_EXIT(EFI_NOT_FOUND); | |
1608 | } | |
1609 | ||
332468f7 HS |
1610 | /* |
1611 | * Get protocols installed on a handle. | |
1612 | * | |
1613 | * This function implements the ProtocolsPerHandleService. | |
1614 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1615 | * for details. | |
1616 | * | |
1617 | * @handle handle for which the information is retrieved | |
1618 | * @protocol_buffer buffer with protocol GUIDs | |
1619 | * @protocol_buffer_count number of entries in the buffer | |
10a08c4e | 1620 | * @return status code |
332468f7 | 1621 | */ |
bee91169 AG |
1622 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, |
1623 | efi_guid_t ***protocol_buffer, | |
1624 | unsigned long *protocol_buffer_count) | |
1625 | { | |
c0ebfc86 | 1626 | unsigned long buffer_size; |
1627 | struct efi_object *efiobj; | |
1628 | unsigned long i, j; | |
1629 | struct list_head *lhandle; | |
1630 | efi_status_t r; | |
1631 | ||
bee91169 AG |
1632 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, |
1633 | protocol_buffer_count); | |
c0ebfc86 | 1634 | |
1635 | if (!handle || !protocol_buffer || !protocol_buffer_count) | |
1636 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1637 | ||
1638 | *protocol_buffer = NULL; | |
661c8327 | 1639 | *protocol_buffer_count = 0; |
c0ebfc86 | 1640 | list_for_each(lhandle, &efi_obj_list) { |
1641 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1642 | ||
1643 | if (efiobj->handle != handle) | |
1644 | continue; | |
1645 | ||
1646 | /* Count protocols */ | |
1647 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1648 | if (efiobj->protocols[i].guid) | |
1649 | ++*protocol_buffer_count; | |
1650 | } | |
1651 | /* Copy guids */ | |
1652 | if (*protocol_buffer_count) { | |
1653 | buffer_size = sizeof(efi_guid_t *) * | |
1654 | *protocol_buffer_count; | |
1655 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
1656 | buffer_size, | |
1657 | (void **)protocol_buffer); | |
1658 | if (r != EFI_SUCCESS) | |
1659 | return EFI_EXIT(r); | |
1660 | j = 0; | |
1661 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) { | |
1662 | if (efiobj->protocols[i].guid) { | |
1663 | (*protocol_buffer)[j] = (void *) | |
1664 | efiobj->protocols[i].guid; | |
1665 | ++j; | |
1666 | } | |
1667 | } | |
1668 | } | |
1669 | break; | |
1670 | } | |
1671 | ||
1672 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
1673 | } |
1674 | ||
332468f7 HS |
1675 | /* |
1676 | * Locate handles implementing a protocol. | |
1677 | * | |
1678 | * This function implements the LocateHandleBuffer service. | |
1679 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1680 | * for details. | |
1681 | * | |
1682 | * @search_type selection criterion | |
1683 | * @protocol GUID of the protocol | |
1684 | * @search_key registration key | |
1685 | * @no_handles number of returned handles | |
1686 | * @buffer buffer with the returned handles | |
1687 | * @return status code | |
1688 | */ | |
bee91169 AG |
1689 | static efi_status_t EFIAPI efi_locate_handle_buffer( |
1690 | enum efi_locate_search_type search_type, | |
5a9682d0 | 1691 | const efi_guid_t *protocol, void *search_key, |
bee91169 AG |
1692 | unsigned long *no_handles, efi_handle_t **buffer) |
1693 | { | |
c2e703f9 | 1694 | efi_status_t r; |
1695 | unsigned long buffer_size = 0; | |
1696 | ||
778e6af8 | 1697 | EFI_ENTRY("%d, %pUl, %p, %p, %p", search_type, protocol, search_key, |
bee91169 | 1698 | no_handles, buffer); |
c2e703f9 | 1699 | |
1700 | if (!no_handles || !buffer) { | |
1701 | r = EFI_INVALID_PARAMETER; | |
1702 | goto out; | |
1703 | } | |
1704 | *no_handles = 0; | |
1705 | *buffer = NULL; | |
1706 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1707 | *buffer); | |
1708 | if (r != EFI_BUFFER_TOO_SMALL) | |
1709 | goto out; | |
1710 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size, | |
1711 | (void **)buffer); | |
1712 | if (r != EFI_SUCCESS) | |
1713 | goto out; | |
1714 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1715 | *buffer); | |
1716 | if (r == EFI_SUCCESS) | |
1717 | *no_handles = buffer_size / sizeof(void *); | |
1718 | out: | |
1719 | return EFI_EXIT(r); | |
bee91169 AG |
1720 | } |
1721 | ||
332468f7 HS |
1722 | /* |
1723 | * Find an interface implementing a protocol. | |
1724 | * | |
1725 | * This function implements the LocateProtocol service. | |
1726 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1727 | * for details. | |
1728 | * | |
1729 | * @protocol GUID of the protocol | |
1730 | * @registration registration key passed to the notification function | |
1731 | * @protocol_interface interface implementing the protocol | |
10a08c4e | 1732 | * @return status code |
332468f7 | 1733 | */ |
5a9682d0 | 1734 | static efi_status_t EFIAPI efi_locate_protocol(const efi_guid_t *protocol, |
bee91169 AG |
1735 | void *registration, |
1736 | void **protocol_interface) | |
1737 | { | |
88adae5e | 1738 | struct list_head *lhandle; |
bee91169 AG |
1739 | int i; |
1740 | ||
778e6af8 | 1741 | EFI_ENTRY("%pUl, %p, %p", protocol, registration, protocol_interface); |
88adae5e | 1742 | |
1743 | if (!protocol || !protocol_interface) | |
1744 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1745 | ||
ae0bd3a9 HS |
1746 | EFI_PRINT_GUID("protocol", protocol); |
1747 | ||
88adae5e | 1748 | list_for_each(lhandle, &efi_obj_list) { |
1749 | struct efi_object *efiobj; | |
1750 | ||
1751 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1752 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1753 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1754 | ||
1755 | if (!handler->guid) | |
1756 | continue; | |
1757 | if (!guidcmp(handler->guid, protocol)) { | |
1758 | *protocol_interface = | |
1759 | handler->protocol_interface; | |
1760 | return EFI_EXIT(EFI_SUCCESS); | |
1761 | } | |
bee91169 AG |
1762 | } |
1763 | } | |
88adae5e | 1764 | *protocol_interface = NULL; |
bee91169 AG |
1765 | |
1766 | return EFI_EXIT(EFI_NOT_FOUND); | |
1767 | } | |
1768 | ||
332468f7 HS |
1769 | /* |
1770 | * Install multiple protocol interfaces. | |
1771 | * | |
1772 | * This function implements the MultipleProtocolInterfaces service. | |
1773 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1774 | * for details. | |
1775 | * | |
1776 | * @handle handle on which the protocol interfaces shall be installed | |
1777 | * @... NULL terminated argument list with pairs of protocol GUIDS and | |
1778 | * interfaces | |
1779 | * @return status code | |
1780 | */ | |
bee91169 AG |
1781 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( |
1782 | void **handle, ...) | |
1783 | { | |
1784 | EFI_ENTRY("%p", handle); | |
58b83586 | 1785 | |
1786 | va_list argptr; | |
5a9682d0 | 1787 | const efi_guid_t *protocol; |
58b83586 | 1788 | void *protocol_interface; |
1789 | efi_status_t r = EFI_SUCCESS; | |
1790 | int i = 0; | |
1791 | ||
1792 | if (!handle) | |
1793 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1794 | ||
1795 | va_start(argptr, handle); | |
1796 | for (;;) { | |
1797 | protocol = va_arg(argptr, efi_guid_t*); | |
1798 | if (!protocol) | |
1799 | break; | |
1800 | protocol_interface = va_arg(argptr, void*); | |
1801 | r = efi_install_protocol_interface(handle, protocol, | |
1802 | EFI_NATIVE_INTERFACE, | |
1803 | protocol_interface); | |
1804 | if (r != EFI_SUCCESS) | |
1805 | break; | |
1806 | i++; | |
1807 | } | |
1808 | va_end(argptr); | |
1809 | if (r == EFI_SUCCESS) | |
1810 | return EFI_EXIT(r); | |
1811 | ||
1812 | /* If an error occured undo all changes. */ | |
1813 | va_start(argptr, handle); | |
1814 | for (; i; --i) { | |
1815 | protocol = va_arg(argptr, efi_guid_t*); | |
1816 | protocol_interface = va_arg(argptr, void*); | |
1817 | efi_uninstall_protocol_interface(handle, protocol, | |
1818 | protocol_interface); | |
1819 | } | |
1820 | va_end(argptr); | |
1821 | ||
1822 | return EFI_EXIT(r); | |
bee91169 AG |
1823 | } |
1824 | ||
332468f7 HS |
1825 | /* |
1826 | * Uninstall multiple protocol interfaces. | |
1827 | * | |
1828 | * This function implements the UninstallMultipleProtocolInterfaces service. | |
1829 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1830 | * for details. | |
1831 | * | |
1832 | * @handle handle from which the protocol interfaces shall be removed | |
1833 | * @... NULL terminated argument list with pairs of protocol GUIDS and | |
1834 | * interfaces | |
1835 | * @return status code | |
1836 | */ | |
bee91169 AG |
1837 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( |
1838 | void *handle, ...) | |
1839 | { | |
1840 | EFI_ENTRY("%p", handle); | |
1841 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1842 | } | |
1843 | ||
332468f7 HS |
1844 | /* |
1845 | * Calculate cyclic redundancy code. | |
1846 | * | |
1847 | * This function implements the CalculateCrc32 service. | |
1848 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1849 | * for details. | |
1850 | * | |
1851 | * @data buffer with data | |
1852 | * @data_size size of buffer in bytes | |
1853 | * @crc32_p cyclic redundancy code | |
1854 | * @return status code | |
1855 | */ | |
bee91169 AG |
1856 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, |
1857 | unsigned long data_size, | |
1858 | uint32_t *crc32_p) | |
1859 | { | |
1860 | EFI_ENTRY("%p, %ld", data, data_size); | |
1861 | *crc32_p = crc32(0, data, data_size); | |
1862 | return EFI_EXIT(EFI_SUCCESS); | |
1863 | } | |
1864 | ||
332468f7 HS |
1865 | /* |
1866 | * Copy memory. | |
1867 | * | |
1868 | * This function implements the CopyMem service. | |
1869 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1870 | * for details. | |
1871 | * | |
1872 | * @destination destination of the copy operation | |
1873 | * @source source of the copy operation | |
1874 | * @length number of bytes to copy | |
1875 | */ | |
fc05a959 HS |
1876 | static void EFIAPI efi_copy_mem(void *destination, const void *source, |
1877 | size_t length) | |
bee91169 | 1878 | { |
fc05a959 | 1879 | EFI_ENTRY("%p, %p, %ld", destination, source, (unsigned long)length); |
bee91169 | 1880 | memcpy(destination, source, length); |
f7c78176 | 1881 | EFI_EXIT(EFI_SUCCESS); |
bee91169 AG |
1882 | } |
1883 | ||
332468f7 HS |
1884 | /* |
1885 | * Fill memory with a byte value. | |
1886 | * | |
1887 | * This function implements the SetMem service. | |
1888 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1889 | * for details. | |
1890 | * | |
1891 | * @buffer buffer to fill | |
1892 | * @size size of buffer in bytes | |
1893 | * @value byte to copy to the buffer | |
1894 | */ | |
fc05a959 | 1895 | static void EFIAPI efi_set_mem(void *buffer, size_t size, uint8_t value) |
bee91169 | 1896 | { |
fc05a959 | 1897 | EFI_ENTRY("%p, %ld, 0x%x", buffer, (unsigned long)size, value); |
bee91169 | 1898 | memset(buffer, value, size); |
f7c78176 | 1899 | EFI_EXIT(EFI_SUCCESS); |
bee91169 AG |
1900 | } |
1901 | ||
332468f7 HS |
1902 | /* |
1903 | * Open protocol interface on a handle. | |
1904 | * | |
1905 | * This function implements the OpenProtocol interface. | |
1906 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1907 | * for details. | |
1908 | * | |
1909 | * @handle handle on which the protocol shall be opened | |
1910 | * @protocol GUID of the protocol | |
1911 | * @protocol_interface interface implementing the protocol | |
1912 | * @agent_handle handle of the driver | |
1913 | * @controller_handle handle of the controller | |
1914 | * @attributes attributes indicating how to open the protocol | |
1915 | * @return status code | |
1916 | */ | |
bee91169 | 1917 | static efi_status_t EFIAPI efi_open_protocol( |
5a9682d0 | 1918 | void *handle, const efi_guid_t *protocol, |
bee91169 AG |
1919 | void **protocol_interface, void *agent_handle, |
1920 | void *controller_handle, uint32_t attributes) | |
1921 | { | |
1922 | struct list_head *lhandle; | |
1923 | int i; | |
69baec67 | 1924 | efi_status_t r = EFI_INVALID_PARAMETER; |
bee91169 | 1925 | |
778e6af8 | 1926 | EFI_ENTRY("%p, %pUl, %p, %p, %p, 0x%x", handle, protocol, |
bee91169 AG |
1927 | protocol_interface, agent_handle, controller_handle, |
1928 | attributes); | |
b5349f74 | 1929 | |
69baec67 | 1930 | if (!handle || !protocol || |
1931 | (!protocol_interface && attributes != | |
1932 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) { | |
1933 | goto out; | |
1934 | } | |
1935 | ||
ae0bd3a9 HS |
1936 | EFI_PRINT_GUID("protocol", protocol); |
1937 | ||
69baec67 | 1938 | switch (attributes) { |
1939 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL: | |
1940 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL: | |
1941 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL: | |
1942 | break; | |
1943 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER: | |
1944 | if (controller_handle == handle) | |
1945 | goto out; | |
1946 | case EFI_OPEN_PROTOCOL_BY_DRIVER: | |
1947 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1948 | if (controller_handle == NULL) | |
1949 | goto out; | |
1950 | case EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1951 | if (agent_handle == NULL) | |
1952 | goto out; | |
1953 | break; | |
1954 | default: | |
b5349f74 | 1955 | goto out; |
1956 | } | |
1957 | ||
bee91169 AG |
1958 | list_for_each(lhandle, &efi_obj_list) { |
1959 | struct efi_object *efiobj; | |
1960 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1961 | ||
1962 | if (efiobj->handle != handle) | |
1963 | continue; | |
1964 | ||
1965 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1966 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1967 | const efi_guid_t *hprotocol = handler->guid; | |
1968 | if (!hprotocol) | |
4b6ed0d7 | 1969 | continue; |
bee91169 | 1970 | if (!guidcmp(hprotocol, protocol)) { |
b5349f74 | 1971 | if (attributes != |
1972 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL) { | |
1973 | *protocol_interface = | |
1974 | handler->protocol_interface; | |
1975 | } | |
1976 | r = EFI_SUCCESS; | |
bee91169 AG |
1977 | goto out; |
1978 | } | |
1979 | } | |
69baec67 | 1980 | goto unsupported; |
bee91169 AG |
1981 | } |
1982 | ||
69baec67 | 1983 | unsupported: |
1984 | r = EFI_UNSUPPORTED; | |
bee91169 AG |
1985 | out: |
1986 | return EFI_EXIT(r); | |
1987 | } | |
1988 | ||
332468f7 HS |
1989 | /* |
1990 | * Get interface of a protocol on a handle. | |
1991 | * | |
1992 | * This function implements the HandleProtocol service. | |
1993 | * See the Unified Extensible Firmware Interface (UEFI) specification | |
1994 | * for details. | |
1995 | * | |
1996 | * @handle handle on which the protocol shall be opened | |
1997 | * @protocol GUID of the protocol | |
1998 | * @protocol_interface interface implementing the protocol | |
1999 | * @return status code | |
2000 | */ | |
bee91169 | 2001 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, |
5a9682d0 | 2002 | const efi_guid_t *protocol, |
bee91169 AG |
2003 | void **protocol_interface) |
2004 | { | |
8e1d329f | 2005 | return efi_open_protocol(handle, protocol, protocol_interface, NULL, |
2006 | NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL); | |
bee91169 AG |
2007 | } |
2008 | ||
2009 | static const struct efi_boot_services efi_boot_services = { | |
2010 | .hdr = { | |
2011 | .headersize = sizeof(struct efi_table_hdr), | |
2012 | }, | |
2013 | .raise_tpl = efi_raise_tpl, | |
2014 | .restore_tpl = efi_restore_tpl, | |
2015 | .allocate_pages = efi_allocate_pages_ext, | |
2016 | .free_pages = efi_free_pages_ext, | |
2017 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 2018 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 2019 | .free_pool = efi_free_pool_ext, |
49deb455 | 2020 | .create_event = efi_create_event_ext, |
bfc72462 | 2021 | .set_timer = efi_set_timer_ext, |
bee91169 | 2022 | .wait_for_event = efi_wait_for_event, |
c6841592 | 2023 | .signal_event = efi_signal_event_ext, |
bee91169 AG |
2024 | .close_event = efi_close_event, |
2025 | .check_event = efi_check_event, | |
8bee5a3c | 2026 | .install_protocol_interface = efi_install_protocol_interface_ext, |
bee91169 | 2027 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, |
3d8e1456 | 2028 | .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext, |
bee91169 AG |
2029 | .handle_protocol = efi_handle_protocol, |
2030 | .reserved = NULL, | |
2031 | .register_protocol_notify = efi_register_protocol_notify, | |
26329584 | 2032 | .locate_handle = efi_locate_handle_ext, |
bee91169 | 2033 | .locate_device_path = efi_locate_device_path, |
488bf12d | 2034 | .install_configuration_table = efi_install_configuration_table_ext, |
bee91169 AG |
2035 | .load_image = efi_load_image, |
2036 | .start_image = efi_start_image, | |
a86aeaf2 | 2037 | .exit = efi_exit, |
bee91169 AG |
2038 | .unload_image = efi_unload_image, |
2039 | .exit_boot_services = efi_exit_boot_services, | |
2040 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
2041 | .stall = efi_stall, | |
2042 | .set_watchdog_timer = efi_set_watchdog_timer, | |
2043 | .connect_controller = efi_connect_controller, | |
2044 | .disconnect_controller = efi_disconnect_controller, | |
2045 | .open_protocol = efi_open_protocol, | |
2046 | .close_protocol = efi_close_protocol, | |
2047 | .open_protocol_information = efi_open_protocol_information, | |
2048 | .protocols_per_handle = efi_protocols_per_handle, | |
2049 | .locate_handle_buffer = efi_locate_handle_buffer, | |
2050 | .locate_protocol = efi_locate_protocol, | |
2051 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
2052 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
2053 | .calculate_crc32 = efi_calculate_crc32, | |
2054 | .copy_mem = efi_copy_mem, | |
2055 | .set_mem = efi_set_mem, | |
2056 | }; | |
2057 | ||
2058 | ||
3c63db9c | 2059 | static uint16_t __efi_runtime_data firmware_vendor[] = |
bee91169 AG |
2060 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
2061 | ||
3c63db9c | 2062 | struct efi_system_table __efi_runtime_data systab = { |
bee91169 AG |
2063 | .hdr = { |
2064 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
2065 | .revision = 0x20005, /* 2.5 */ | |
2066 | .headersize = sizeof(struct efi_table_hdr), | |
2067 | }, | |
2068 | .fw_vendor = (long)firmware_vendor, | |
2069 | .con_in = (void*)&efi_con_in, | |
2070 | .con_out = (void*)&efi_con_out, | |
2071 | .std_err = (void*)&efi_con_out, | |
2072 | .runtime = (void*)&efi_runtime_services, | |
2073 | .boottime = (void*)&efi_boot_services, | |
2074 | .nr_tables = 0, | |
2075 | .tables = (void*)efi_conf_table, | |
2076 | }; |