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Commit | Line | Data |
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bee91169 AG |
1 | /* |
2 | * EFI application boot time services | |
3 | * | |
4 | * Copyright (c) 2016 Alexander Graf | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
bee91169 AG |
9 | #include <common.h> |
10 | #include <efi_loader.h> | |
11 | #include <malloc.h> | |
12 | #include <asm/global_data.h> | |
13 | #include <libfdt_env.h> | |
14 | #include <u-boot/crc.h> | |
15 | #include <bootm.h> | |
16 | #include <inttypes.h> | |
17 | #include <watchdog.h> | |
18 | ||
19 | DECLARE_GLOBAL_DATA_PTR; | |
20 | ||
32f4b2f8 HS |
21 | /* Task priority level */ |
22 | static UINTN efi_tpl = TPL_APPLICATION; | |
23 | ||
bee91169 AG |
24 | /* This list contains all the EFI objects our payload has access to */ |
25 | LIST_HEAD(efi_obj_list); | |
26 | ||
27 | /* | |
28 | * If we're running on nasty systems (32bit ARM booting into non-EFI Linux) | |
29 | * we need to do trickery with caches. Since we don't want to break the EFI | |
30 | * aware boot path, only apply hacks when loading exiting directly (breaking | |
31 | * direct Linux EFI booting along the way - oh well). | |
32 | */ | |
33 | static bool efi_is_direct_boot = true; | |
34 | ||
35 | /* | |
36 | * EFI can pass arbitrary additional "tables" containing vendor specific | |
37 | * information to the payload. One such table is the FDT table which contains | |
38 | * a pointer to a flattened device tree blob. | |
39 | * | |
40 | * In most cases we want to pass an FDT to the payload, so reserve one slot of | |
41 | * config table space for it. The pointer gets populated by do_bootefi_exec(). | |
42 | */ | |
3c63db9c | 43 | static struct efi_configuration_table __efi_runtime_data efi_conf_table[2]; |
bee91169 | 44 | |
65e4c0b1 | 45 | #ifdef CONFIG_ARM |
bee91169 AG |
46 | /* |
47 | * The "gd" pointer lives in a register on ARM and AArch64 that we declare | |
48 | * fixed when compiling U-Boot. However, the payload does not know about that | |
49 | * restriction so we need to manually swap its and our view of that register on | |
50 | * EFI callback entry/exit. | |
51 | */ | |
52 | static volatile void *efi_gd, *app_gd; | |
65e4c0b1 | 53 | #endif |
bee91169 | 54 | |
c160d2f5 | 55 | static int entry_count; |
af65db85 | 56 | static int nesting_level; |
c160d2f5 RC |
57 | |
58 | /* Called on every callback entry */ | |
59 | int __efi_entry_check(void) | |
60 | { | |
61 | int ret = entry_count++ == 0; | |
62 | #ifdef CONFIG_ARM | |
63 | assert(efi_gd); | |
64 | app_gd = gd; | |
65 | gd = efi_gd; | |
66 | #endif | |
67 | return ret; | |
68 | } | |
69 | ||
70 | /* Called on every callback exit */ | |
71 | int __efi_exit_check(void) | |
72 | { | |
73 | int ret = --entry_count == 0; | |
74 | #ifdef CONFIG_ARM | |
75 | gd = app_gd; | |
76 | #endif | |
77 | return ret; | |
78 | } | |
79 | ||
bee91169 AG |
80 | /* Called from do_bootefi_exec() */ |
81 | void efi_save_gd(void) | |
82 | { | |
65e4c0b1 | 83 | #ifdef CONFIG_ARM |
bee91169 | 84 | efi_gd = gd; |
65e4c0b1 | 85 | #endif |
bee91169 AG |
86 | } |
87 | ||
c160d2f5 RC |
88 | /* |
89 | * Special case handler for error/abort that just forces things back | |
90 | * to u-boot world so we can dump out an abort msg, without any care | |
91 | * about returning back to UEFI world. | |
92 | */ | |
bee91169 AG |
93 | void efi_restore_gd(void) |
94 | { | |
65e4c0b1 | 95 | #ifdef CONFIG_ARM |
bee91169 AG |
96 | /* Only restore if we're already in EFI context */ |
97 | if (!efi_gd) | |
98 | return; | |
bee91169 | 99 | gd = efi_gd; |
65e4c0b1 | 100 | #endif |
bee91169 AG |
101 | } |
102 | ||
af65db85 RC |
103 | /* |
104 | * Two spaces per indent level, maxing out at 10.. which ought to be | |
105 | * enough for anyone ;-) | |
106 | */ | |
107 | static const char *indent_string(int level) | |
108 | { | |
109 | const char *indent = " "; | |
110 | const int max = strlen(indent); | |
111 | level = min(max, level * 2); | |
112 | return &indent[max - level]; | |
113 | } | |
114 | ||
ae0bd3a9 HS |
115 | const char *__efi_nesting(void) |
116 | { | |
117 | return indent_string(nesting_level); | |
118 | } | |
119 | ||
af65db85 RC |
120 | const char *__efi_nesting_inc(void) |
121 | { | |
122 | return indent_string(nesting_level++); | |
123 | } | |
124 | ||
125 | const char *__efi_nesting_dec(void) | |
126 | { | |
127 | return indent_string(--nesting_level); | |
128 | } | |
129 | ||
8787b02e HS |
130 | /* Low 32 bit */ |
131 | #define EFI_LOW32(a) (a & 0xFFFFFFFFULL) | |
132 | /* High 32 bit */ | |
133 | #define EFI_HIGH32(a) (a >> 32) | |
134 | ||
135 | /* | |
136 | * 64bit division by 10 implemented as multiplication by 1 / 10 | |
137 | * | |
138 | * Decimals of one tenth: 0x1 / 0xA = 0x0.19999... | |
139 | */ | |
140 | #define EFI_TENTH 0x199999999999999A | |
141 | static u64 efi_div10(u64 a) | |
142 | { | |
143 | u64 prod; | |
144 | u64 rem; | |
145 | u64 ret; | |
146 | ||
147 | ret = EFI_HIGH32(a) * EFI_HIGH32(EFI_TENTH); | |
148 | prod = EFI_HIGH32(a) * EFI_LOW32(EFI_TENTH); | |
149 | rem = EFI_LOW32(prod); | |
150 | ret += EFI_HIGH32(prod); | |
151 | prod = EFI_LOW32(a) * EFI_HIGH32(EFI_TENTH); | |
152 | rem += EFI_LOW32(prod); | |
153 | ret += EFI_HIGH32(prod); | |
154 | prod = EFI_LOW32(a) * EFI_LOW32(EFI_TENTH); | |
155 | rem += EFI_HIGH32(prod); | |
156 | ret += EFI_HIGH32(rem); | |
157 | /* Round to nearest integer */ | |
158 | if (rem >= (1 << 31)) | |
159 | ++ret; | |
160 | return ret; | |
161 | } | |
162 | ||
91be9a77 | 163 | void efi_signal_event(struct efi_event *event) |
c6841592 | 164 | { |
ca62a4f5 HS |
165 | if (event->notify_function) { |
166 | event->queued = 1; | |
32f4b2f8 HS |
167 | /* Check TPL */ |
168 | if (efi_tpl >= event->notify_tpl) | |
169 | return; | |
ea630ce9 HS |
170 | EFI_CALL_VOID(event->notify_function(event, |
171 | event->notify_context)); | |
c6841592 | 172 | } |
ca62a4f5 | 173 | event->queued = 0; |
c6841592 HS |
174 | } |
175 | ||
bee91169 AG |
176 | static efi_status_t efi_unsupported(const char *funcname) |
177 | { | |
edcef3ba | 178 | debug("EFI: App called into unimplemented function %s\n", funcname); |
bee91169 AG |
179 | return EFI_EXIT(EFI_UNSUPPORTED); |
180 | } | |
181 | ||
503f2695 | 182 | static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl) |
bee91169 | 183 | { |
32f4b2f8 HS |
184 | UINTN old_tpl = efi_tpl; |
185 | ||
503f2695 | 186 | EFI_ENTRY("0x%zx", new_tpl); |
32f4b2f8 HS |
187 | |
188 | if (new_tpl < efi_tpl) | |
189 | debug("WARNING: new_tpl < current_tpl in %s\n", __func__); | |
190 | efi_tpl = new_tpl; | |
191 | if (efi_tpl > TPL_HIGH_LEVEL) | |
192 | efi_tpl = TPL_HIGH_LEVEL; | |
193 | ||
194 | EFI_EXIT(EFI_SUCCESS); | |
195 | return old_tpl; | |
bee91169 AG |
196 | } |
197 | ||
503f2695 | 198 | static void EFIAPI efi_restore_tpl(UINTN old_tpl) |
bee91169 | 199 | { |
503f2695 | 200 | EFI_ENTRY("0x%zx", old_tpl); |
32f4b2f8 HS |
201 | |
202 | if (old_tpl > efi_tpl) | |
203 | debug("WARNING: old_tpl > current_tpl in %s\n", __func__); | |
204 | efi_tpl = old_tpl; | |
205 | if (efi_tpl > TPL_HIGH_LEVEL) | |
206 | efi_tpl = TPL_HIGH_LEVEL; | |
207 | ||
208 | EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
209 | } |
210 | ||
6e0bf8d8 MY |
211 | static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, |
212 | unsigned long pages, | |
213 | uint64_t *memory) | |
bee91169 AG |
214 | { |
215 | efi_status_t r; | |
216 | ||
217 | EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); | |
218 | r = efi_allocate_pages(type, memory_type, pages, memory); | |
219 | return EFI_EXIT(r); | |
220 | } | |
221 | ||
6e0bf8d8 MY |
222 | static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, |
223 | unsigned long pages) | |
bee91169 AG |
224 | { |
225 | efi_status_t r; | |
226 | ||
227 | EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); | |
228 | r = efi_free_pages(memory, pages); | |
229 | return EFI_EXIT(r); | |
230 | } | |
231 | ||
6e0bf8d8 MY |
232 | static efi_status_t EFIAPI efi_get_memory_map_ext( |
233 | unsigned long *memory_map_size, | |
234 | struct efi_mem_desc *memory_map, | |
235 | unsigned long *map_key, | |
236 | unsigned long *descriptor_size, | |
237 | uint32_t *descriptor_version) | |
bee91169 AG |
238 | { |
239 | efi_status_t r; | |
240 | ||
241 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
242 | map_key, descriptor_size, descriptor_version); | |
243 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
244 | descriptor_size, descriptor_version); | |
245 | return EFI_EXIT(r); | |
246 | } | |
247 | ||
ead1274b SB |
248 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
249 | unsigned long size, | |
250 | void **buffer) | |
bee91169 | 251 | { |
1cd29f0a AG |
252 | efi_status_t r; |
253 | ||
254 | EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); | |
ead1274b | 255 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 256 | return EFI_EXIT(r); |
bee91169 AG |
257 | } |
258 | ||
42417bc8 | 259 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 260 | { |
1cd29f0a AG |
261 | efi_status_t r; |
262 | ||
263 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 264 | r = efi_free_pool(buffer); |
1cd29f0a | 265 | return EFI_EXIT(r); |
bee91169 AG |
266 | } |
267 | ||
268 | /* | |
c6841592 HS |
269 | * Our event capabilities are very limited. Only a small limited |
270 | * number of events is allowed to coexist. | |
bee91169 | 271 | */ |
c6841592 | 272 | static struct efi_event efi_events[16]; |
bee91169 | 273 | |
b521d29e | 274 | efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl, |
49deb455 | 275 | void (EFIAPI *notify_function) ( |
2fd945fe HS |
276 | struct efi_event *event, |
277 | void *context), | |
49deb455 | 278 | void *notify_context, struct efi_event **event) |
bee91169 | 279 | { |
c6841592 HS |
280 | int i; |
281 | ||
a95343b8 | 282 | if (event == NULL) |
49deb455 | 283 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
284 | |
285 | if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) | |
49deb455 | 286 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
287 | |
288 | if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && | |
289 | notify_function == NULL) | |
49deb455 | 290 | return EFI_INVALID_PARAMETER; |
a95343b8 | 291 | |
c6841592 HS |
292 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
293 | if (efi_events[i].type) | |
294 | continue; | |
295 | efi_events[i].type = type; | |
296 | efi_events[i].notify_tpl = notify_tpl; | |
297 | efi_events[i].notify_function = notify_function; | |
298 | efi_events[i].notify_context = notify_context; | |
299 | /* Disable timers on bootup */ | |
300 | efi_events[i].trigger_next = -1ULL; | |
ca62a4f5 | 301 | efi_events[i].queued = 0; |
c6841592 HS |
302 | efi_events[i].signaled = 0; |
303 | *event = &efi_events[i]; | |
49deb455 | 304 | return EFI_SUCCESS; |
c6841592 | 305 | } |
49deb455 | 306 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
307 | } |
308 | ||
49deb455 | 309 | static efi_status_t EFIAPI efi_create_event_ext( |
b521d29e | 310 | uint32_t type, UINTN notify_tpl, |
49deb455 HS |
311 | void (EFIAPI *notify_function) ( |
312 | struct efi_event *event, | |
313 | void *context), | |
314 | void *notify_context, struct efi_event **event) | |
315 | { | |
316 | EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function, | |
317 | notify_context); | |
318 | return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function, | |
319 | notify_context, event)); | |
320 | } | |
321 | ||
322 | ||
bee91169 AG |
323 | /* |
324 | * Our timers have to work without interrupts, so we check whenever keyboard | |
325 | * input or disk accesses happen if enough time elapsed for it to fire. | |
326 | */ | |
327 | void efi_timer_check(void) | |
328 | { | |
c6841592 | 329 | int i; |
bee91169 AG |
330 | u64 now = timer_get_us(); |
331 | ||
c6841592 | 332 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
ca62a4f5 HS |
333 | if (!efi_events[i].type) |
334 | continue; | |
335 | if (efi_events[i].queued) | |
336 | efi_signal_event(&efi_events[i]); | |
337 | if (!(efi_events[i].type & EVT_TIMER) || | |
c6841592 HS |
338 | now < efi_events[i].trigger_next) |
339 | continue; | |
ca62a4f5 HS |
340 | switch (efi_events[i].trigger_type) { |
341 | case EFI_TIMER_RELATIVE: | |
342 | efi_events[i].trigger_type = EFI_TIMER_STOP; | |
343 | break; | |
344 | case EFI_TIMER_PERIODIC: | |
c6841592 | 345 | efi_events[i].trigger_next += |
8787b02e | 346 | efi_events[i].trigger_time; |
ca62a4f5 HS |
347 | break; |
348 | default: | |
349 | continue; | |
c6841592 | 350 | } |
ca62a4f5 | 351 | efi_events[i].signaled = 1; |
c6841592 | 352 | efi_signal_event(&efi_events[i]); |
bee91169 | 353 | } |
bee91169 AG |
354 | WATCHDOG_RESET(); |
355 | } | |
356 | ||
b521d29e | 357 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 358 | uint64_t trigger_time) |
bee91169 | 359 | { |
c6841592 | 360 | int i; |
bee91169 | 361 | |
8787b02e HS |
362 | /* |
363 | * The parameter defines a multiple of 100ns. | |
364 | * We use multiples of 1000ns. So divide by 10. | |
365 | */ | |
366 | trigger_time = efi_div10(trigger_time); | |
bee91169 | 367 | |
c6841592 HS |
368 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
369 | if (event != &efi_events[i]) | |
370 | continue; | |
bee91169 | 371 | |
c6841592 HS |
372 | if (!(event->type & EVT_TIMER)) |
373 | break; | |
374 | switch (type) { | |
375 | case EFI_TIMER_STOP: | |
376 | event->trigger_next = -1ULL; | |
377 | break; | |
378 | case EFI_TIMER_PERIODIC: | |
379 | case EFI_TIMER_RELATIVE: | |
380 | event->trigger_next = | |
8787b02e | 381 | timer_get_us() + trigger_time; |
c6841592 HS |
382 | break; |
383 | default: | |
bfc72462 | 384 | return EFI_INVALID_PARAMETER; |
c6841592 HS |
385 | } |
386 | event->trigger_type = type; | |
387 | event->trigger_time = trigger_time; | |
2eca8452 | 388 | event->signaled = 0; |
bfc72462 | 389 | return EFI_SUCCESS; |
bee91169 | 390 | } |
bfc72462 HS |
391 | return EFI_INVALID_PARAMETER; |
392 | } | |
393 | ||
b521d29e HS |
394 | static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event, |
395 | enum efi_timer_delay type, | |
396 | uint64_t trigger_time) | |
bfc72462 HS |
397 | { |
398 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
399 | return EFI_EXIT(efi_set_timer(event, type, trigger_time)); | |
bee91169 AG |
400 | } |
401 | ||
402 | static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, | |
2fd945fe HS |
403 | struct efi_event **event, |
404 | unsigned long *index) | |
bee91169 | 405 | { |
c6841592 | 406 | int i, j; |
bee91169 AG |
407 | |
408 | EFI_ENTRY("%ld, %p, %p", num_events, event, index); | |
409 | ||
c6841592 HS |
410 | /* Check parameters */ |
411 | if (!num_events || !event) | |
412 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
32f4b2f8 HS |
413 | /* Check TPL */ |
414 | if (efi_tpl != TPL_APPLICATION) | |
415 | return EFI_EXIT(EFI_UNSUPPORTED); | |
c6841592 HS |
416 | for (i = 0; i < num_events; ++i) { |
417 | for (j = 0; j < ARRAY_SIZE(efi_events); ++j) { | |
418 | if (event[i] == &efi_events[j]) | |
419 | goto known_event; | |
420 | } | |
421 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
422 | known_event: | |
423 | if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL) | |
424 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
ca62a4f5 HS |
425 | if (!event[i]->signaled) |
426 | efi_signal_event(event[i]); | |
c6841592 HS |
427 | } |
428 | ||
429 | /* Wait for signal */ | |
430 | for (;;) { | |
431 | for (i = 0; i < num_events; ++i) { | |
432 | if (event[i]->signaled) | |
433 | goto out; | |
434 | } | |
435 | /* Allow events to occur. */ | |
436 | efi_timer_check(); | |
437 | } | |
438 | ||
439 | out: | |
440 | /* | |
441 | * Reset the signal which is passed to the caller to allow periodic | |
442 | * events to occur. | |
443 | */ | |
444 | event[i]->signaled = 0; | |
445 | if (index) | |
446 | *index = i; | |
bee91169 AG |
447 | |
448 | return EFI_EXIT(EFI_SUCCESS); | |
449 | } | |
450 | ||
c6841592 | 451 | static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event) |
bee91169 | 452 | { |
c6841592 HS |
453 | int i; |
454 | ||
bee91169 | 455 | EFI_ENTRY("%p", event); |
c6841592 HS |
456 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
457 | if (event != &efi_events[i]) | |
458 | continue; | |
ca62a4f5 HS |
459 | if (event->signaled) |
460 | break; | |
461 | event->signaled = 1; | |
462 | if (event->type & EVT_NOTIFY_SIGNAL) | |
463 | efi_signal_event(event); | |
c6841592 HS |
464 | break; |
465 | } | |
bee91169 AG |
466 | return EFI_EXIT(EFI_SUCCESS); |
467 | } | |
468 | ||
2fd945fe | 469 | static efi_status_t EFIAPI efi_close_event(struct efi_event *event) |
bee91169 | 470 | { |
c6841592 HS |
471 | int i; |
472 | ||
bee91169 | 473 | EFI_ENTRY("%p", event); |
c6841592 HS |
474 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
475 | if (event == &efi_events[i]) { | |
476 | event->type = 0; | |
477 | event->trigger_next = -1ULL; | |
ca62a4f5 | 478 | event->queued = 0; |
c6841592 HS |
479 | event->signaled = 0; |
480 | return EFI_EXIT(EFI_SUCCESS); | |
481 | } | |
482 | } | |
483 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
484 | } |
485 | ||
2fd945fe | 486 | static efi_status_t EFIAPI efi_check_event(struct efi_event *event) |
bee91169 | 487 | { |
c6841592 HS |
488 | int i; |
489 | ||
bee91169 | 490 | EFI_ENTRY("%p", event); |
c6841592 HS |
491 | efi_timer_check(); |
492 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
493 | if (event != &efi_events[i]) | |
494 | continue; | |
495 | if (!event->type || event->type & EVT_NOTIFY_SIGNAL) | |
496 | break; | |
ca62a4f5 HS |
497 | if (!event->signaled) |
498 | efi_signal_event(event); | |
c6841592 HS |
499 | if (event->signaled) |
500 | return EFI_EXIT(EFI_SUCCESS); | |
501 | return EFI_EXIT(EFI_NOT_READY); | |
502 | } | |
503 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
504 | } |
505 | ||
506 | static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, | |
507 | efi_guid_t *protocol, int protocol_interface_type, | |
508 | void *protocol_interface) | |
509 | { | |
e0549f8a HS |
510 | struct list_head *lhandle; |
511 | int i; | |
512 | efi_status_t r; | |
513 | ||
e0549f8a HS |
514 | if (!handle || !protocol || |
515 | protocol_interface_type != EFI_NATIVE_INTERFACE) { | |
516 | r = EFI_INVALID_PARAMETER; | |
517 | goto out; | |
518 | } | |
519 | ||
520 | /* Create new handle if requested. */ | |
521 | if (!*handle) { | |
522 | r = EFI_OUT_OF_RESOURCES; | |
523 | goto out; | |
524 | } | |
525 | /* Find object. */ | |
526 | list_for_each(lhandle, &efi_obj_list) { | |
527 | struct efi_object *efiobj; | |
528 | efiobj = list_entry(lhandle, struct efi_object, link); | |
529 | ||
530 | if (efiobj->handle != *handle) | |
531 | continue; | |
532 | /* Check if protocol is already installed on the handle. */ | |
533 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
534 | struct efi_handler *handler = &efiobj->protocols[i]; | |
535 | ||
536 | if (!handler->guid) | |
537 | continue; | |
538 | if (!guidcmp(handler->guid, protocol)) { | |
539 | r = EFI_INVALID_PARAMETER; | |
540 | goto out; | |
541 | } | |
542 | } | |
543 | /* Install protocol in first empty slot. */ | |
544 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
545 | struct efi_handler *handler = &efiobj->protocols[i]; | |
546 | ||
547 | if (handler->guid) | |
548 | continue; | |
549 | ||
550 | handler->guid = protocol; | |
551 | handler->protocol_interface = protocol_interface; | |
552 | r = EFI_SUCCESS; | |
553 | goto out; | |
554 | } | |
555 | r = EFI_OUT_OF_RESOURCES; | |
556 | goto out; | |
557 | } | |
558 | r = EFI_INVALID_PARAMETER; | |
559 | out: | |
8bee5a3c HS |
560 | return r; |
561 | } | |
562 | ||
563 | static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle, | |
564 | efi_guid_t *protocol, int protocol_interface_type, | |
565 | void *protocol_interface) | |
566 | { | |
567 | EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, | |
568 | protocol_interface); | |
569 | ||
570 | return EFI_EXIT(efi_install_protocol_interface(handle, protocol, | |
571 | protocol_interface_type, | |
572 | protocol_interface)); | |
bee91169 | 573 | } |
e0549f8a | 574 | |
bee91169 AG |
575 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, |
576 | efi_guid_t *protocol, void *old_interface, | |
577 | void *new_interface) | |
578 | { | |
579 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, | |
580 | new_interface); | |
581 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
582 | } | |
583 | ||
584 | static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, | |
585 | efi_guid_t *protocol, void *protocol_interface) | |
586 | { | |
4b6ed0d7 HS |
587 | struct list_head *lhandle; |
588 | int i; | |
589 | efi_status_t r = EFI_NOT_FOUND; | |
590 | ||
4b6ed0d7 HS |
591 | if (!handle || !protocol) { |
592 | r = EFI_INVALID_PARAMETER; | |
593 | goto out; | |
594 | } | |
595 | ||
596 | list_for_each(lhandle, &efi_obj_list) { | |
597 | struct efi_object *efiobj; | |
598 | efiobj = list_entry(lhandle, struct efi_object, link); | |
599 | ||
600 | if (efiobj->handle != handle) | |
601 | continue; | |
602 | ||
603 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
604 | struct efi_handler *handler = &efiobj->protocols[i]; | |
605 | const efi_guid_t *hprotocol = handler->guid; | |
606 | ||
607 | if (!hprotocol) | |
608 | continue; | |
609 | if (!guidcmp(hprotocol, protocol)) { | |
610 | if (handler->protocol_interface) { | |
611 | r = EFI_ACCESS_DENIED; | |
612 | } else { | |
613 | handler->guid = 0; | |
614 | r = EFI_SUCCESS; | |
615 | } | |
616 | goto out; | |
617 | } | |
618 | } | |
619 | } | |
620 | ||
621 | out: | |
3d8e1456 HS |
622 | return r; |
623 | } | |
624 | ||
625 | static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle, | |
626 | efi_guid_t *protocol, void *protocol_interface) | |
627 | { | |
628 | EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); | |
629 | ||
630 | return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol, | |
631 | protocol_interface)); | |
bee91169 AG |
632 | } |
633 | ||
634 | static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, | |
2fd945fe | 635 | struct efi_event *event, |
bee91169 AG |
636 | void **registration) |
637 | { | |
638 | EFI_ENTRY("%p, %p, %p", protocol, event, registration); | |
639 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
640 | } | |
641 | ||
642 | static int efi_search(enum efi_locate_search_type search_type, | |
643 | efi_guid_t *protocol, void *search_key, | |
644 | struct efi_object *efiobj) | |
645 | { | |
646 | int i; | |
647 | ||
648 | switch (search_type) { | |
649 | case all_handles: | |
650 | return 0; | |
651 | case by_register_notify: | |
652 | return -1; | |
653 | case by_protocol: | |
654 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
655 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
656 | if (guid && !guidcmp(guid, protocol)) | |
657 | return 0; | |
658 | } | |
659 | return -1; | |
660 | } | |
661 | ||
662 | return -1; | |
663 | } | |
664 | ||
ebf199b9 | 665 | static efi_status_t efi_locate_handle( |
bee91169 AG |
666 | enum efi_locate_search_type search_type, |
667 | efi_guid_t *protocol, void *search_key, | |
668 | unsigned long *buffer_size, efi_handle_t *buffer) | |
669 | { | |
670 | struct list_head *lhandle; | |
671 | unsigned long size = 0; | |
672 | ||
bee91169 AG |
673 | /* Count how much space we need */ |
674 | list_for_each(lhandle, &efi_obj_list) { | |
675 | struct efi_object *efiobj; | |
676 | efiobj = list_entry(lhandle, struct efi_object, link); | |
677 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
678 | size += sizeof(void*); | |
679 | } | |
680 | } | |
681 | ||
682 | if (*buffer_size < size) { | |
683 | *buffer_size = size; | |
26329584 | 684 | return EFI_BUFFER_TOO_SMALL; |
bee91169 AG |
685 | } |
686 | ||
796a78cb RC |
687 | *buffer_size = size; |
688 | if (size == 0) | |
689 | return EFI_NOT_FOUND; | |
690 | ||
bee91169 AG |
691 | /* Then fill the array */ |
692 | list_for_each(lhandle, &efi_obj_list) { | |
693 | struct efi_object *efiobj; | |
694 | efiobj = list_entry(lhandle, struct efi_object, link); | |
695 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
696 | *(buffer++) = efiobj->handle; | |
697 | } | |
698 | } | |
699 | ||
26329584 HS |
700 | return EFI_SUCCESS; |
701 | } | |
702 | ||
703 | static efi_status_t EFIAPI efi_locate_handle_ext( | |
704 | enum efi_locate_search_type search_type, | |
705 | efi_guid_t *protocol, void *search_key, | |
706 | unsigned long *buffer_size, efi_handle_t *buffer) | |
707 | { | |
708 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
709 | buffer_size, buffer); | |
710 | ||
711 | return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key, | |
712 | buffer_size, buffer)); | |
bee91169 AG |
713 | } |
714 | ||
715 | static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, | |
716 | struct efi_device_path **device_path, | |
717 | efi_handle_t *device) | |
718 | { | |
719 | EFI_ENTRY("%p, %p, %p", protocol, device_path, device); | |
720 | return EFI_EXIT(EFI_NOT_FOUND); | |
721 | } | |
722 | ||
d98cdf6a AG |
723 | /* Collapses configuration table entries, removing index i */ |
724 | static void efi_remove_configuration_table(int i) | |
725 | { | |
726 | struct efi_configuration_table *this = &efi_conf_table[i]; | |
727 | struct efi_configuration_table *next = &efi_conf_table[i+1]; | |
728 | struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables]; | |
729 | ||
730 | memmove(this, next, (ulong)end - (ulong)next); | |
731 | systab.nr_tables--; | |
732 | } | |
733 | ||
488bf12d | 734 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) |
bee91169 AG |
735 | { |
736 | int i; | |
737 | ||
bee91169 AG |
738 | /* Check for guid override */ |
739 | for (i = 0; i < systab.nr_tables; i++) { | |
740 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
d98cdf6a AG |
741 | if (table) |
742 | efi_conf_table[i].table = table; | |
743 | else | |
744 | efi_remove_configuration_table(i); | |
488bf12d | 745 | return EFI_SUCCESS; |
bee91169 AG |
746 | } |
747 | } | |
748 | ||
d98cdf6a AG |
749 | if (!table) |
750 | return EFI_NOT_FOUND; | |
751 | ||
bee91169 AG |
752 | /* No override, check for overflow */ |
753 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
488bf12d | 754 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
755 | |
756 | /* Add a new entry */ | |
757 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
758 | efi_conf_table[i].table = table; | |
aba5e919 | 759 | systab.nr_tables = i + 1; |
bee91169 | 760 | |
488bf12d AG |
761 | return EFI_SUCCESS; |
762 | } | |
763 | ||
764 | static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, | |
765 | void *table) | |
766 | { | |
767 | EFI_ENTRY("%p, %p", guid, table); | |
768 | return EFI_EXIT(efi_install_configuration_table(guid, table)); | |
bee91169 AG |
769 | } |
770 | ||
771 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, | |
772 | efi_handle_t parent_image, | |
773 | struct efi_device_path *file_path, | |
774 | void *source_buffer, | |
775 | unsigned long source_size, | |
776 | efi_handle_t *image_handle) | |
777 | { | |
778 | static struct efi_object loaded_image_info_obj = { | |
779 | .protocols = { | |
780 | { | |
781 | .guid = &efi_guid_loaded_image, | |
bee91169 AG |
782 | }, |
783 | }, | |
784 | }; | |
785 | struct efi_loaded_image *info; | |
786 | struct efi_object *obj; | |
787 | ||
788 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
789 | file_path, source_buffer, source_size, image_handle); | |
790 | info = malloc(sizeof(*info)); | |
b5349f74 | 791 | loaded_image_info_obj.protocols[0].protocol_interface = info; |
bee91169 AG |
792 | obj = malloc(sizeof(loaded_image_info_obj)); |
793 | memset(info, 0, sizeof(*info)); | |
794 | memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); | |
795 | obj->handle = info; | |
796 | info->file_path = file_path; | |
797 | info->reserved = efi_load_pe(source_buffer, info); | |
798 | if (!info->reserved) { | |
799 | free(info); | |
800 | free(obj); | |
801 | return EFI_EXIT(EFI_UNSUPPORTED); | |
802 | } | |
803 | ||
804 | *image_handle = info; | |
805 | list_add_tail(&obj->link, &efi_obj_list); | |
806 | ||
807 | return EFI_EXIT(EFI_SUCCESS); | |
808 | } | |
809 | ||
810 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, | |
811 | unsigned long *exit_data_size, | |
812 | s16 **exit_data) | |
813 | { | |
814 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
815 | struct efi_loaded_image *info = image_handle; | |
816 | ||
817 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
818 | entry = info->reserved; | |
819 | ||
820 | efi_is_direct_boot = false; | |
821 | ||
822 | /* call the image! */ | |
a86aeaf2 AG |
823 | if (setjmp(&info->exit_jmp)) { |
824 | /* We returned from the child image */ | |
825 | return EFI_EXIT(info->exit_status); | |
826 | } | |
827 | ||
af65db85 | 828 | __efi_nesting_dec(); |
c160d2f5 | 829 | __efi_exit_check(); |
bee91169 | 830 | entry(image_handle, &systab); |
c160d2f5 | 831 | __efi_entry_check(); |
af65db85 | 832 | __efi_nesting_inc(); |
bee91169 AG |
833 | |
834 | /* Should usually never get here */ | |
835 | return EFI_EXIT(EFI_SUCCESS); | |
836 | } | |
837 | ||
a86aeaf2 AG |
838 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
839 | efi_status_t exit_status, unsigned long exit_data_size, | |
840 | int16_t *exit_data) | |
bee91169 | 841 | { |
a86aeaf2 AG |
842 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
843 | ||
bee91169 AG |
844 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
845 | exit_data_size, exit_data); | |
a86aeaf2 | 846 | |
a148920e | 847 | /* Make sure entry/exit counts for EFI world cross-overs match */ |
da94073b HS |
848 | __efi_exit_check(); |
849 | ||
a148920e AG |
850 | /* |
851 | * But longjmp out with the U-Boot gd, not the application's, as | |
852 | * the other end is a setjmp call inside EFI context. | |
853 | */ | |
854 | efi_restore_gd(); | |
855 | ||
a86aeaf2 | 856 | loaded_image_info->exit_status = exit_status; |
692fcdd8 | 857 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
858 | |
859 | panic("EFI application exited"); | |
bee91169 AG |
860 | } |
861 | ||
862 | static struct efi_object *efi_search_obj(void *handle) | |
863 | { | |
864 | struct list_head *lhandle; | |
865 | ||
866 | list_for_each(lhandle, &efi_obj_list) { | |
867 | struct efi_object *efiobj; | |
868 | efiobj = list_entry(lhandle, struct efi_object, link); | |
869 | if (efiobj->handle == handle) | |
870 | return efiobj; | |
871 | } | |
872 | ||
873 | return NULL; | |
874 | } | |
875 | ||
876 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) | |
877 | { | |
878 | struct efi_object *efiobj; | |
879 | ||
880 | EFI_ENTRY("%p", image_handle); | |
881 | efiobj = efi_search_obj(image_handle); | |
882 | if (efiobj) | |
883 | list_del(&efiobj->link); | |
884 | ||
885 | return EFI_EXIT(EFI_SUCCESS); | |
886 | } | |
887 | ||
888 | static void efi_exit_caches(void) | |
889 | { | |
890 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
891 | /* | |
892 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
893 | * a zImage, but does not know of all cache layers. Give it a hand. | |
894 | */ | |
895 | if (efi_is_direct_boot) | |
896 | cleanup_before_linux(); | |
897 | #endif | |
898 | } | |
899 | ||
900 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, | |
901 | unsigned long map_key) | |
902 | { | |
903 | EFI_ENTRY("%p, %ld", image_handle, map_key); | |
904 | ||
b7b8410a AG |
905 | board_quiesce_devices(); |
906 | ||
bee91169 AG |
907 | /* Fix up caches for EFI payloads if necessary */ |
908 | efi_exit_caches(); | |
909 | ||
910 | /* This stops all lingering devices */ | |
911 | bootm_disable_interrupts(); | |
912 | ||
913 | /* Give the payload some time to boot */ | |
914 | WATCHDOG_RESET(); | |
915 | ||
916 | return EFI_EXIT(EFI_SUCCESS); | |
917 | } | |
918 | ||
919 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) | |
920 | { | |
921 | static uint64_t mono = 0; | |
922 | EFI_ENTRY("%p", count); | |
923 | *count = mono++; | |
924 | return EFI_EXIT(EFI_SUCCESS); | |
925 | } | |
926 | ||
927 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) | |
928 | { | |
929 | EFI_ENTRY("%ld", microseconds); | |
930 | udelay(microseconds); | |
931 | return EFI_EXIT(EFI_SUCCESS); | |
932 | } | |
933 | ||
934 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, | |
935 | uint64_t watchdog_code, | |
936 | unsigned long data_size, | |
937 | uint16_t *watchdog_data) | |
938 | { | |
939 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
940 | data_size, watchdog_data); | |
b5104821 | 941 | return efi_unsupported(__func__); |
bee91169 AG |
942 | } |
943 | ||
944 | static efi_status_t EFIAPI efi_connect_controller( | |
945 | efi_handle_t controller_handle, | |
946 | efi_handle_t *driver_image_handle, | |
947 | struct efi_device_path *remain_device_path, | |
948 | bool recursive) | |
949 | { | |
950 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
951 | remain_device_path, recursive); | |
952 | return EFI_EXIT(EFI_NOT_FOUND); | |
953 | } | |
954 | ||
955 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, | |
956 | void *driver_image_handle, | |
957 | void *child_handle) | |
958 | { | |
959 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
960 | child_handle); | |
961 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
962 | } | |
963 | ||
964 | static efi_status_t EFIAPI efi_close_protocol(void *handle, | |
965 | efi_guid_t *protocol, | |
966 | void *agent_handle, | |
967 | void *controller_handle) | |
968 | { | |
969 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, | |
970 | controller_handle); | |
971 | return EFI_EXIT(EFI_NOT_FOUND); | |
972 | } | |
973 | ||
974 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, | |
975 | efi_guid_t *protocol, | |
976 | struct efi_open_protocol_info_entry **entry_buffer, | |
977 | unsigned long *entry_count) | |
978 | { | |
979 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, | |
980 | entry_count); | |
981 | return EFI_EXIT(EFI_NOT_FOUND); | |
982 | } | |
983 | ||
984 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, | |
985 | efi_guid_t ***protocol_buffer, | |
986 | unsigned long *protocol_buffer_count) | |
987 | { | |
c0ebfc86 HS |
988 | unsigned long buffer_size; |
989 | struct efi_object *efiobj; | |
990 | unsigned long i, j; | |
991 | struct list_head *lhandle; | |
992 | efi_status_t r; | |
993 | ||
bee91169 AG |
994 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, |
995 | protocol_buffer_count); | |
c0ebfc86 HS |
996 | |
997 | if (!handle || !protocol_buffer || !protocol_buffer_count) | |
998 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
999 | ||
1000 | *protocol_buffer = NULL; | |
661c8327 | 1001 | *protocol_buffer_count = 0; |
c0ebfc86 HS |
1002 | list_for_each(lhandle, &efi_obj_list) { |
1003 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1004 | ||
1005 | if (efiobj->handle != handle) | |
1006 | continue; | |
1007 | ||
1008 | /* Count protocols */ | |
1009 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1010 | if (efiobj->protocols[i].guid) | |
1011 | ++*protocol_buffer_count; | |
1012 | } | |
1013 | /* Copy guids */ | |
1014 | if (*protocol_buffer_count) { | |
1015 | buffer_size = sizeof(efi_guid_t *) * | |
1016 | *protocol_buffer_count; | |
1017 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
1018 | buffer_size, | |
1019 | (void **)protocol_buffer); | |
1020 | if (r != EFI_SUCCESS) | |
1021 | return EFI_EXIT(r); | |
1022 | j = 0; | |
1023 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) { | |
1024 | if (efiobj->protocols[i].guid) { | |
1025 | (*protocol_buffer)[j] = (void *) | |
1026 | efiobj->protocols[i].guid; | |
1027 | ++j; | |
1028 | } | |
1029 | } | |
1030 | } | |
1031 | break; | |
1032 | } | |
1033 | ||
1034 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
1035 | } |
1036 | ||
1037 | static efi_status_t EFIAPI efi_locate_handle_buffer( | |
1038 | enum efi_locate_search_type search_type, | |
1039 | efi_guid_t *protocol, void *search_key, | |
1040 | unsigned long *no_handles, efi_handle_t **buffer) | |
1041 | { | |
c2e703f9 HS |
1042 | efi_status_t r; |
1043 | unsigned long buffer_size = 0; | |
1044 | ||
bee91169 AG |
1045 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, |
1046 | no_handles, buffer); | |
c2e703f9 HS |
1047 | |
1048 | if (!no_handles || !buffer) { | |
1049 | r = EFI_INVALID_PARAMETER; | |
1050 | goto out; | |
1051 | } | |
1052 | *no_handles = 0; | |
1053 | *buffer = NULL; | |
1054 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1055 | *buffer); | |
1056 | if (r != EFI_BUFFER_TOO_SMALL) | |
1057 | goto out; | |
1058 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size, | |
1059 | (void **)buffer); | |
1060 | if (r != EFI_SUCCESS) | |
1061 | goto out; | |
1062 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1063 | *buffer); | |
1064 | if (r == EFI_SUCCESS) | |
1065 | *no_handles = buffer_size / sizeof(void *); | |
1066 | out: | |
1067 | return EFI_EXIT(r); | |
bee91169 AG |
1068 | } |
1069 | ||
bee91169 AG |
1070 | static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, |
1071 | void *registration, | |
1072 | void **protocol_interface) | |
1073 | { | |
88adae5e | 1074 | struct list_head *lhandle; |
bee91169 AG |
1075 | int i; |
1076 | ||
1077 | EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); | |
88adae5e HS |
1078 | |
1079 | if (!protocol || !protocol_interface) | |
1080 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1081 | ||
ae0bd3a9 HS |
1082 | EFI_PRINT_GUID("protocol", protocol); |
1083 | ||
88adae5e HS |
1084 | list_for_each(lhandle, &efi_obj_list) { |
1085 | struct efi_object *efiobj; | |
1086 | ||
1087 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1088 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1089 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1090 | ||
1091 | if (!handler->guid) | |
1092 | continue; | |
1093 | if (!guidcmp(handler->guid, protocol)) { | |
1094 | *protocol_interface = | |
1095 | handler->protocol_interface; | |
1096 | return EFI_EXIT(EFI_SUCCESS); | |
1097 | } | |
bee91169 AG |
1098 | } |
1099 | } | |
88adae5e | 1100 | *protocol_interface = NULL; |
bee91169 AG |
1101 | |
1102 | return EFI_EXIT(EFI_NOT_FOUND); | |
1103 | } | |
1104 | ||
1105 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( | |
1106 | void **handle, ...) | |
1107 | { | |
1108 | EFI_ENTRY("%p", handle); | |
58b83586 HS |
1109 | |
1110 | va_list argptr; | |
1111 | efi_guid_t *protocol; | |
1112 | void *protocol_interface; | |
1113 | efi_status_t r = EFI_SUCCESS; | |
1114 | int i = 0; | |
1115 | ||
1116 | if (!handle) | |
1117 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1118 | ||
1119 | va_start(argptr, handle); | |
1120 | for (;;) { | |
1121 | protocol = va_arg(argptr, efi_guid_t*); | |
1122 | if (!protocol) | |
1123 | break; | |
1124 | protocol_interface = va_arg(argptr, void*); | |
1125 | r = efi_install_protocol_interface(handle, protocol, | |
1126 | EFI_NATIVE_INTERFACE, | |
1127 | protocol_interface); | |
1128 | if (r != EFI_SUCCESS) | |
1129 | break; | |
1130 | i++; | |
1131 | } | |
1132 | va_end(argptr); | |
1133 | if (r == EFI_SUCCESS) | |
1134 | return EFI_EXIT(r); | |
1135 | ||
1136 | /* If an error occured undo all changes. */ | |
1137 | va_start(argptr, handle); | |
1138 | for (; i; --i) { | |
1139 | protocol = va_arg(argptr, efi_guid_t*); | |
1140 | protocol_interface = va_arg(argptr, void*); | |
1141 | efi_uninstall_protocol_interface(handle, protocol, | |
1142 | protocol_interface); | |
1143 | } | |
1144 | va_end(argptr); | |
1145 | ||
1146 | return EFI_EXIT(r); | |
bee91169 AG |
1147 | } |
1148 | ||
1149 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( | |
1150 | void *handle, ...) | |
1151 | { | |
1152 | EFI_ENTRY("%p", handle); | |
1153 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1154 | } | |
1155 | ||
1156 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, | |
1157 | unsigned long data_size, | |
1158 | uint32_t *crc32_p) | |
1159 | { | |
1160 | EFI_ENTRY("%p, %ld", data, data_size); | |
1161 | *crc32_p = crc32(0, data, data_size); | |
1162 | return EFI_EXIT(EFI_SUCCESS); | |
1163 | } | |
1164 | ||
1165 | static void EFIAPI efi_copy_mem(void *destination, void *source, | |
1166 | unsigned long length) | |
1167 | { | |
1168 | EFI_ENTRY("%p, %p, %ld", destination, source, length); | |
1169 | memcpy(destination, source, length); | |
1170 | } | |
1171 | ||
1172 | static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) | |
1173 | { | |
1174 | EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); | |
1175 | memset(buffer, value, size); | |
1176 | } | |
1177 | ||
1178 | static efi_status_t EFIAPI efi_open_protocol( | |
1179 | void *handle, efi_guid_t *protocol, | |
1180 | void **protocol_interface, void *agent_handle, | |
1181 | void *controller_handle, uint32_t attributes) | |
1182 | { | |
1183 | struct list_head *lhandle; | |
1184 | int i; | |
69baec67 | 1185 | efi_status_t r = EFI_INVALID_PARAMETER; |
bee91169 AG |
1186 | |
1187 | EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, | |
1188 | protocol_interface, agent_handle, controller_handle, | |
1189 | attributes); | |
b5349f74 | 1190 | |
69baec67 HS |
1191 | if (!handle || !protocol || |
1192 | (!protocol_interface && attributes != | |
1193 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) { | |
1194 | goto out; | |
1195 | } | |
1196 | ||
ae0bd3a9 HS |
1197 | EFI_PRINT_GUID("protocol", protocol); |
1198 | ||
69baec67 HS |
1199 | switch (attributes) { |
1200 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL: | |
1201 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL: | |
1202 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL: | |
1203 | break; | |
1204 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER: | |
1205 | if (controller_handle == handle) | |
1206 | goto out; | |
1207 | case EFI_OPEN_PROTOCOL_BY_DRIVER: | |
1208 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1209 | if (controller_handle == NULL) | |
1210 | goto out; | |
1211 | case EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1212 | if (agent_handle == NULL) | |
1213 | goto out; | |
1214 | break; | |
1215 | default: | |
b5349f74 HS |
1216 | goto out; |
1217 | } | |
1218 | ||
bee91169 AG |
1219 | list_for_each(lhandle, &efi_obj_list) { |
1220 | struct efi_object *efiobj; | |
1221 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1222 | ||
1223 | if (efiobj->handle != handle) | |
1224 | continue; | |
1225 | ||
1226 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1227 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1228 | const efi_guid_t *hprotocol = handler->guid; | |
1229 | if (!hprotocol) | |
4b6ed0d7 | 1230 | continue; |
bee91169 | 1231 | if (!guidcmp(hprotocol, protocol)) { |
b5349f74 HS |
1232 | if (attributes != |
1233 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL) { | |
1234 | *protocol_interface = | |
1235 | handler->protocol_interface; | |
1236 | } | |
1237 | r = EFI_SUCCESS; | |
bee91169 AG |
1238 | goto out; |
1239 | } | |
1240 | } | |
69baec67 | 1241 | goto unsupported; |
bee91169 AG |
1242 | } |
1243 | ||
69baec67 HS |
1244 | unsupported: |
1245 | r = EFI_UNSUPPORTED; | |
bee91169 AG |
1246 | out: |
1247 | return EFI_EXIT(r); | |
1248 | } | |
1249 | ||
1250 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, | |
1251 | efi_guid_t *protocol, | |
1252 | void **protocol_interface) | |
1253 | { | |
8e1d329f HS |
1254 | return efi_open_protocol(handle, protocol, protocol_interface, NULL, |
1255 | NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL); | |
bee91169 AG |
1256 | } |
1257 | ||
1258 | static const struct efi_boot_services efi_boot_services = { | |
1259 | .hdr = { | |
1260 | .headersize = sizeof(struct efi_table_hdr), | |
1261 | }, | |
1262 | .raise_tpl = efi_raise_tpl, | |
1263 | .restore_tpl = efi_restore_tpl, | |
1264 | .allocate_pages = efi_allocate_pages_ext, | |
1265 | .free_pages = efi_free_pages_ext, | |
1266 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 1267 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 1268 | .free_pool = efi_free_pool_ext, |
49deb455 | 1269 | .create_event = efi_create_event_ext, |
bfc72462 | 1270 | .set_timer = efi_set_timer_ext, |
bee91169 | 1271 | .wait_for_event = efi_wait_for_event, |
c6841592 | 1272 | .signal_event = efi_signal_event_ext, |
bee91169 AG |
1273 | .close_event = efi_close_event, |
1274 | .check_event = efi_check_event, | |
8bee5a3c | 1275 | .install_protocol_interface = efi_install_protocol_interface_ext, |
bee91169 | 1276 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, |
3d8e1456 | 1277 | .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext, |
bee91169 AG |
1278 | .handle_protocol = efi_handle_protocol, |
1279 | .reserved = NULL, | |
1280 | .register_protocol_notify = efi_register_protocol_notify, | |
26329584 | 1281 | .locate_handle = efi_locate_handle_ext, |
bee91169 | 1282 | .locate_device_path = efi_locate_device_path, |
488bf12d | 1283 | .install_configuration_table = efi_install_configuration_table_ext, |
bee91169 AG |
1284 | .load_image = efi_load_image, |
1285 | .start_image = efi_start_image, | |
a86aeaf2 | 1286 | .exit = efi_exit, |
bee91169 AG |
1287 | .unload_image = efi_unload_image, |
1288 | .exit_boot_services = efi_exit_boot_services, | |
1289 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
1290 | .stall = efi_stall, | |
1291 | .set_watchdog_timer = efi_set_watchdog_timer, | |
1292 | .connect_controller = efi_connect_controller, | |
1293 | .disconnect_controller = efi_disconnect_controller, | |
1294 | .open_protocol = efi_open_protocol, | |
1295 | .close_protocol = efi_close_protocol, | |
1296 | .open_protocol_information = efi_open_protocol_information, | |
1297 | .protocols_per_handle = efi_protocols_per_handle, | |
1298 | .locate_handle_buffer = efi_locate_handle_buffer, | |
1299 | .locate_protocol = efi_locate_protocol, | |
1300 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
1301 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
1302 | .calculate_crc32 = efi_calculate_crc32, | |
1303 | .copy_mem = efi_copy_mem, | |
1304 | .set_mem = efi_set_mem, | |
1305 | }; | |
1306 | ||
1307 | ||
3c63db9c | 1308 | static uint16_t __efi_runtime_data firmware_vendor[] = |
bee91169 AG |
1309 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
1310 | ||
3c63db9c | 1311 | struct efi_system_table __efi_runtime_data systab = { |
bee91169 AG |
1312 | .hdr = { |
1313 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
1314 | .revision = 0x20005, /* 2.5 */ | |
1315 | .headersize = sizeof(struct efi_table_hdr), | |
1316 | }, | |
1317 | .fw_vendor = (long)firmware_vendor, | |
1318 | .con_in = (void*)&efi_con_in, | |
1319 | .con_out = (void*)&efi_con_out, | |
1320 | .std_err = (void*)&efi_con_out, | |
1321 | .runtime = (void*)&efi_runtime_services, | |
1322 | .boottime = (void*)&efi_boot_services, | |
1323 | .nr_tables = 0, | |
1324 | .tables = (void*)efi_conf_table, | |
1325 | }; |