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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 | ||
21 | /* This list contains all the EFI objects our payload has access to */ | |
22 | LIST_HEAD(efi_obj_list); | |
23 | ||
24 | /* | |
25 | * If we're running on nasty systems (32bit ARM booting into non-EFI Linux) | |
26 | * we need to do trickery with caches. Since we don't want to break the EFI | |
27 | * aware boot path, only apply hacks when loading exiting directly (breaking | |
28 | * direct Linux EFI booting along the way - oh well). | |
29 | */ | |
30 | static bool efi_is_direct_boot = true; | |
31 | ||
32 | /* | |
33 | * EFI can pass arbitrary additional "tables" containing vendor specific | |
34 | * information to the payload. One such table is the FDT table which contains | |
35 | * a pointer to a flattened device tree blob. | |
36 | * | |
37 | * In most cases we want to pass an FDT to the payload, so reserve one slot of | |
38 | * config table space for it. The pointer gets populated by do_bootefi_exec(). | |
39 | */ | |
3c63db9c | 40 | static struct efi_configuration_table __efi_runtime_data efi_conf_table[2]; |
bee91169 | 41 | |
65e4c0b1 | 42 | #ifdef CONFIG_ARM |
bee91169 AG |
43 | /* |
44 | * The "gd" pointer lives in a register on ARM and AArch64 that we declare | |
45 | * fixed when compiling U-Boot. However, the payload does not know about that | |
46 | * restriction so we need to manually swap its and our view of that register on | |
47 | * EFI callback entry/exit. | |
48 | */ | |
49 | static volatile void *efi_gd, *app_gd; | |
65e4c0b1 | 50 | #endif |
bee91169 | 51 | |
c160d2f5 | 52 | static int entry_count; |
af65db85 | 53 | static int nesting_level; |
c160d2f5 RC |
54 | |
55 | /* Called on every callback entry */ | |
56 | int __efi_entry_check(void) | |
57 | { | |
58 | int ret = entry_count++ == 0; | |
59 | #ifdef CONFIG_ARM | |
60 | assert(efi_gd); | |
61 | app_gd = gd; | |
62 | gd = efi_gd; | |
63 | #endif | |
64 | return ret; | |
65 | } | |
66 | ||
67 | /* Called on every callback exit */ | |
68 | int __efi_exit_check(void) | |
69 | { | |
70 | int ret = --entry_count == 0; | |
71 | #ifdef CONFIG_ARM | |
72 | gd = app_gd; | |
73 | #endif | |
74 | return ret; | |
75 | } | |
76 | ||
bee91169 AG |
77 | /* Called from do_bootefi_exec() */ |
78 | void efi_save_gd(void) | |
79 | { | |
65e4c0b1 | 80 | #ifdef CONFIG_ARM |
bee91169 | 81 | efi_gd = gd; |
65e4c0b1 | 82 | #endif |
bee91169 AG |
83 | } |
84 | ||
c160d2f5 RC |
85 | /* |
86 | * Special case handler for error/abort that just forces things back | |
87 | * to u-boot world so we can dump out an abort msg, without any care | |
88 | * about returning back to UEFI world. | |
89 | */ | |
bee91169 AG |
90 | void efi_restore_gd(void) |
91 | { | |
65e4c0b1 | 92 | #ifdef CONFIG_ARM |
bee91169 AG |
93 | /* Only restore if we're already in EFI context */ |
94 | if (!efi_gd) | |
95 | return; | |
bee91169 | 96 | gd = efi_gd; |
65e4c0b1 | 97 | #endif |
bee91169 AG |
98 | } |
99 | ||
af65db85 RC |
100 | /* |
101 | * Two spaces per indent level, maxing out at 10.. which ought to be | |
102 | * enough for anyone ;-) | |
103 | */ | |
104 | static const char *indent_string(int level) | |
105 | { | |
106 | const char *indent = " "; | |
107 | const int max = strlen(indent); | |
108 | level = min(max, level * 2); | |
109 | return &indent[max - level]; | |
110 | } | |
111 | ||
112 | const char *__efi_nesting_inc(void) | |
113 | { | |
114 | return indent_string(nesting_level++); | |
115 | } | |
116 | ||
117 | const char *__efi_nesting_dec(void) | |
118 | { | |
119 | return indent_string(--nesting_level); | |
120 | } | |
121 | ||
8787b02e | 122 | /* Low 32 bit */ |
123 | #define EFI_LOW32(a) (a & 0xFFFFFFFFULL) | |
124 | /* High 32 bit */ | |
125 | #define EFI_HIGH32(a) (a >> 32) | |
126 | ||
127 | /* | |
128 | * 64bit division by 10 implemented as multiplication by 1 / 10 | |
129 | * | |
130 | * Decimals of one tenth: 0x1 / 0xA = 0x0.19999... | |
131 | */ | |
132 | #define EFI_TENTH 0x199999999999999A | |
133 | static u64 efi_div10(u64 a) | |
134 | { | |
135 | u64 prod; | |
136 | u64 rem; | |
137 | u64 ret; | |
138 | ||
139 | ret = EFI_HIGH32(a) * EFI_HIGH32(EFI_TENTH); | |
140 | prod = EFI_HIGH32(a) * EFI_LOW32(EFI_TENTH); | |
141 | rem = EFI_LOW32(prod); | |
142 | ret += EFI_HIGH32(prod); | |
143 | prod = EFI_LOW32(a) * EFI_HIGH32(EFI_TENTH); | |
144 | rem += EFI_LOW32(prod); | |
145 | ret += EFI_HIGH32(prod); | |
146 | prod = EFI_LOW32(a) * EFI_LOW32(EFI_TENTH); | |
147 | rem += EFI_HIGH32(prod); | |
148 | ret += EFI_HIGH32(rem); | |
149 | /* Round to nearest integer */ | |
150 | if (rem >= (1 << 31)) | |
151 | ++ret; | |
152 | return ret; | |
153 | } | |
154 | ||
91be9a77 | 155 | void efi_signal_event(struct efi_event *event) |
c6841592 | 156 | { |
157 | if (event->signaled) | |
158 | return; | |
159 | event->signaled = 1; | |
160 | if (event->type & EVT_NOTIFY_SIGNAL) { | |
a095aadf | 161 | EFI_CALL(event->notify_function(event, event->notify_context)); |
c6841592 | 162 | } |
163 | } | |
164 | ||
bee91169 AG |
165 | static efi_status_t efi_unsupported(const char *funcname) |
166 | { | |
edcef3ba | 167 | debug("EFI: App called into unimplemented function %s\n", funcname); |
bee91169 AG |
168 | return EFI_EXIT(EFI_UNSUPPORTED); |
169 | } | |
170 | ||
503f2695 | 171 | static unsigned long EFIAPI efi_raise_tpl(UINTN new_tpl) |
bee91169 | 172 | { |
503f2695 | 173 | EFI_ENTRY("0x%zx", new_tpl); |
bee91169 AG |
174 | return EFI_EXIT(0); |
175 | } | |
176 | ||
503f2695 | 177 | static void EFIAPI efi_restore_tpl(UINTN old_tpl) |
bee91169 | 178 | { |
503f2695 | 179 | EFI_ENTRY("0x%zx", old_tpl); |
b5104821 | 180 | efi_unsupported(__func__); |
bee91169 AG |
181 | } |
182 | ||
6e0bf8d8 MY |
183 | static efi_status_t EFIAPI efi_allocate_pages_ext(int type, int memory_type, |
184 | unsigned long pages, | |
185 | uint64_t *memory) | |
bee91169 AG |
186 | { |
187 | efi_status_t r; | |
188 | ||
189 | EFI_ENTRY("%d, %d, 0x%lx, %p", type, memory_type, pages, memory); | |
190 | r = efi_allocate_pages(type, memory_type, pages, memory); | |
191 | return EFI_EXIT(r); | |
192 | } | |
193 | ||
6e0bf8d8 MY |
194 | static efi_status_t EFIAPI efi_free_pages_ext(uint64_t memory, |
195 | unsigned long pages) | |
bee91169 AG |
196 | { |
197 | efi_status_t r; | |
198 | ||
199 | EFI_ENTRY("%"PRIx64", 0x%lx", memory, pages); | |
200 | r = efi_free_pages(memory, pages); | |
201 | return EFI_EXIT(r); | |
202 | } | |
203 | ||
6e0bf8d8 MY |
204 | static efi_status_t EFIAPI efi_get_memory_map_ext( |
205 | unsigned long *memory_map_size, | |
206 | struct efi_mem_desc *memory_map, | |
207 | unsigned long *map_key, | |
208 | unsigned long *descriptor_size, | |
209 | uint32_t *descriptor_version) | |
bee91169 AG |
210 | { |
211 | efi_status_t r; | |
212 | ||
213 | EFI_ENTRY("%p, %p, %p, %p, %p", memory_map_size, memory_map, | |
214 | map_key, descriptor_size, descriptor_version); | |
215 | r = efi_get_memory_map(memory_map_size, memory_map, map_key, | |
216 | descriptor_size, descriptor_version); | |
217 | return EFI_EXIT(r); | |
218 | } | |
219 | ||
ead1274b SB |
220 | static efi_status_t EFIAPI efi_allocate_pool_ext(int pool_type, |
221 | unsigned long size, | |
222 | void **buffer) | |
bee91169 | 223 | { |
1cd29f0a AG |
224 | efi_status_t r; |
225 | ||
226 | EFI_ENTRY("%d, %ld, %p", pool_type, size, buffer); | |
ead1274b | 227 | r = efi_allocate_pool(pool_type, size, buffer); |
1cd29f0a | 228 | return EFI_EXIT(r); |
bee91169 AG |
229 | } |
230 | ||
42417bc8 | 231 | static efi_status_t EFIAPI efi_free_pool_ext(void *buffer) |
bee91169 | 232 | { |
1cd29f0a AG |
233 | efi_status_t r; |
234 | ||
235 | EFI_ENTRY("%p", buffer); | |
42417bc8 | 236 | r = efi_free_pool(buffer); |
1cd29f0a | 237 | return EFI_EXIT(r); |
bee91169 AG |
238 | } |
239 | ||
240 | /* | |
c6841592 | 241 | * Our event capabilities are very limited. Only a small limited |
242 | * number of events is allowed to coexist. | |
bee91169 | 243 | */ |
c6841592 | 244 | static struct efi_event efi_events[16]; |
bee91169 | 245 | |
b521d29e | 246 | efi_status_t efi_create_event(uint32_t type, UINTN notify_tpl, |
49deb455 | 247 | void (EFIAPI *notify_function) ( |
2fd945fe | 248 | struct efi_event *event, |
249 | void *context), | |
49deb455 | 250 | void *notify_context, struct efi_event **event) |
bee91169 | 251 | { |
c6841592 | 252 | int i; |
253 | ||
a95343b8 | 254 | if (event == NULL) |
49deb455 | 255 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
256 | |
257 | if ((type & EVT_NOTIFY_SIGNAL) && (type & EVT_NOTIFY_WAIT)) | |
49deb455 | 258 | return EFI_INVALID_PARAMETER; |
a95343b8 JG |
259 | |
260 | if ((type & (EVT_NOTIFY_SIGNAL|EVT_NOTIFY_WAIT)) && | |
261 | notify_function == NULL) | |
49deb455 | 262 | return EFI_INVALID_PARAMETER; |
a95343b8 | 263 | |
c6841592 | 264 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
265 | if (efi_events[i].type) | |
266 | continue; | |
267 | efi_events[i].type = type; | |
268 | efi_events[i].notify_tpl = notify_tpl; | |
269 | efi_events[i].notify_function = notify_function; | |
270 | efi_events[i].notify_context = notify_context; | |
271 | /* Disable timers on bootup */ | |
272 | efi_events[i].trigger_next = -1ULL; | |
273 | efi_events[i].signaled = 0; | |
274 | *event = &efi_events[i]; | |
49deb455 | 275 | return EFI_SUCCESS; |
c6841592 | 276 | } |
49deb455 | 277 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
278 | } |
279 | ||
49deb455 | 280 | static efi_status_t EFIAPI efi_create_event_ext( |
b521d29e | 281 | uint32_t type, UINTN notify_tpl, |
49deb455 | 282 | void (EFIAPI *notify_function) ( |
283 | struct efi_event *event, | |
284 | void *context), | |
285 | void *notify_context, struct efi_event **event) | |
286 | { | |
287 | EFI_ENTRY("%d, 0x%zx, %p, %p", type, notify_tpl, notify_function, | |
288 | notify_context); | |
289 | return EFI_EXIT(efi_create_event(type, notify_tpl, notify_function, | |
290 | notify_context, event)); | |
291 | } | |
292 | ||
293 | ||
bee91169 AG |
294 | /* |
295 | * Our timers have to work without interrupts, so we check whenever keyboard | |
296 | * input or disk accesses happen if enough time elapsed for it to fire. | |
297 | */ | |
298 | void efi_timer_check(void) | |
299 | { | |
c6841592 | 300 | int i; |
bee91169 AG |
301 | u64 now = timer_get_us(); |
302 | ||
c6841592 | 303 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
304 | if (!efi_events[i].type || | |
305 | !(efi_events[i].type & EVT_TIMER) || | |
306 | efi_events[i].trigger_type == EFI_TIMER_STOP || | |
307 | now < efi_events[i].trigger_next) | |
308 | continue; | |
309 | if (efi_events[i].trigger_type == EFI_TIMER_PERIODIC) { | |
310 | efi_events[i].trigger_next += | |
8787b02e | 311 | efi_events[i].trigger_time; |
c6841592 | 312 | efi_events[i].signaled = 0; |
313 | } | |
314 | efi_signal_event(&efi_events[i]); | |
bee91169 | 315 | } |
bee91169 AG |
316 | WATCHDOG_RESET(); |
317 | } | |
318 | ||
b521d29e | 319 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 320 | uint64_t trigger_time) |
bee91169 | 321 | { |
c6841592 | 322 | int i; |
bee91169 | 323 | |
8787b02e | 324 | /* |
325 | * The parameter defines a multiple of 100ns. | |
326 | * We use multiples of 1000ns. So divide by 10. | |
327 | */ | |
328 | trigger_time = efi_div10(trigger_time); | |
bee91169 | 329 | |
c6841592 | 330 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
331 | if (event != &efi_events[i]) | |
332 | continue; | |
bee91169 | 333 | |
c6841592 | 334 | if (!(event->type & EVT_TIMER)) |
335 | break; | |
336 | switch (type) { | |
337 | case EFI_TIMER_STOP: | |
338 | event->trigger_next = -1ULL; | |
339 | break; | |
340 | case EFI_TIMER_PERIODIC: | |
341 | case EFI_TIMER_RELATIVE: | |
342 | event->trigger_next = | |
8787b02e | 343 | timer_get_us() + trigger_time; |
c6841592 | 344 | break; |
345 | default: | |
bfc72462 | 346 | return EFI_INVALID_PARAMETER; |
c6841592 | 347 | } |
348 | event->trigger_type = type; | |
349 | event->trigger_time = trigger_time; | |
bfc72462 | 350 | return EFI_SUCCESS; |
bee91169 | 351 | } |
bfc72462 | 352 | return EFI_INVALID_PARAMETER; |
353 | } | |
354 | ||
b521d29e | 355 | static efi_status_t EFIAPI efi_set_timer_ext(struct efi_event *event, |
356 | enum efi_timer_delay type, | |
357 | uint64_t trigger_time) | |
bfc72462 | 358 | { |
359 | EFI_ENTRY("%p, %d, %"PRIx64, event, type, trigger_time); | |
360 | return EFI_EXIT(efi_set_timer(event, type, trigger_time)); | |
bee91169 AG |
361 | } |
362 | ||
363 | static efi_status_t EFIAPI efi_wait_for_event(unsigned long num_events, | |
2fd945fe | 364 | struct efi_event **event, |
365 | unsigned long *index) | |
bee91169 | 366 | { |
c6841592 | 367 | int i, j; |
bee91169 AG |
368 | |
369 | EFI_ENTRY("%ld, %p, %p", num_events, event, index); | |
370 | ||
c6841592 | 371 | /* Check parameters */ |
372 | if (!num_events || !event) | |
373 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
374 | for (i = 0; i < num_events; ++i) { | |
375 | for (j = 0; j < ARRAY_SIZE(efi_events); ++j) { | |
376 | if (event[i] == &efi_events[j]) | |
377 | goto known_event; | |
378 | } | |
379 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
380 | known_event: | |
381 | if (!event[i]->type || event[i]->type & EVT_NOTIFY_SIGNAL) | |
382 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
383 | } | |
384 | ||
385 | /* Wait for signal */ | |
386 | for (;;) { | |
387 | for (i = 0; i < num_events; ++i) { | |
388 | if (event[i]->signaled) | |
389 | goto out; | |
390 | } | |
391 | /* Allow events to occur. */ | |
392 | efi_timer_check(); | |
393 | } | |
394 | ||
395 | out: | |
396 | /* | |
397 | * Reset the signal which is passed to the caller to allow periodic | |
398 | * events to occur. | |
399 | */ | |
400 | event[i]->signaled = 0; | |
401 | if (index) | |
402 | *index = i; | |
bee91169 AG |
403 | |
404 | return EFI_EXIT(EFI_SUCCESS); | |
405 | } | |
406 | ||
c6841592 | 407 | static efi_status_t EFIAPI efi_signal_event_ext(struct efi_event *event) |
bee91169 | 408 | { |
c6841592 | 409 | int i; |
410 | ||
bee91169 | 411 | EFI_ENTRY("%p", event); |
c6841592 | 412 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
413 | if (event != &efi_events[i]) | |
414 | continue; | |
415 | efi_signal_event(event); | |
416 | break; | |
417 | } | |
bee91169 AG |
418 | return EFI_EXIT(EFI_SUCCESS); |
419 | } | |
420 | ||
2fd945fe | 421 | static efi_status_t EFIAPI efi_close_event(struct efi_event *event) |
bee91169 | 422 | { |
c6841592 | 423 | int i; |
424 | ||
bee91169 | 425 | EFI_ENTRY("%p", event); |
c6841592 | 426 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { |
427 | if (event == &efi_events[i]) { | |
428 | event->type = 0; | |
429 | event->trigger_next = -1ULL; | |
430 | event->signaled = 0; | |
431 | return EFI_EXIT(EFI_SUCCESS); | |
432 | } | |
433 | } | |
434 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
435 | } |
436 | ||
2fd945fe | 437 | static efi_status_t EFIAPI efi_check_event(struct efi_event *event) |
bee91169 | 438 | { |
c6841592 | 439 | int i; |
440 | ||
bee91169 | 441 | EFI_ENTRY("%p", event); |
c6841592 | 442 | efi_timer_check(); |
443 | for (i = 0; i < ARRAY_SIZE(efi_events); ++i) { | |
444 | if (event != &efi_events[i]) | |
445 | continue; | |
446 | if (!event->type || event->type & EVT_NOTIFY_SIGNAL) | |
447 | break; | |
448 | if (event->signaled) | |
449 | return EFI_EXIT(EFI_SUCCESS); | |
450 | return EFI_EXIT(EFI_NOT_READY); | |
451 | } | |
452 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
bee91169 AG |
453 | } |
454 | ||
455 | static efi_status_t EFIAPI efi_install_protocol_interface(void **handle, | |
456 | efi_guid_t *protocol, int protocol_interface_type, | |
457 | void *protocol_interface) | |
458 | { | |
e0549f8a | 459 | struct list_head *lhandle; |
460 | int i; | |
461 | efi_status_t r; | |
462 | ||
e0549f8a | 463 | if (!handle || !protocol || |
464 | protocol_interface_type != EFI_NATIVE_INTERFACE) { | |
465 | r = EFI_INVALID_PARAMETER; | |
466 | goto out; | |
467 | } | |
468 | ||
469 | /* Create new handle if requested. */ | |
470 | if (!*handle) { | |
471 | r = EFI_OUT_OF_RESOURCES; | |
472 | goto out; | |
473 | } | |
474 | /* Find object. */ | |
475 | list_for_each(lhandle, &efi_obj_list) { | |
476 | struct efi_object *efiobj; | |
477 | efiobj = list_entry(lhandle, struct efi_object, link); | |
478 | ||
479 | if (efiobj->handle != *handle) | |
480 | continue; | |
481 | /* Check if protocol is already installed on the handle. */ | |
482 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
483 | struct efi_handler *handler = &efiobj->protocols[i]; | |
484 | ||
485 | if (!handler->guid) | |
486 | continue; | |
487 | if (!guidcmp(handler->guid, protocol)) { | |
488 | r = EFI_INVALID_PARAMETER; | |
489 | goto out; | |
490 | } | |
491 | } | |
492 | /* Install protocol in first empty slot. */ | |
493 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
494 | struct efi_handler *handler = &efiobj->protocols[i]; | |
495 | ||
496 | if (handler->guid) | |
497 | continue; | |
498 | ||
499 | handler->guid = protocol; | |
500 | handler->protocol_interface = protocol_interface; | |
501 | r = EFI_SUCCESS; | |
502 | goto out; | |
503 | } | |
504 | r = EFI_OUT_OF_RESOURCES; | |
505 | goto out; | |
506 | } | |
507 | r = EFI_INVALID_PARAMETER; | |
508 | out: | |
8bee5a3c | 509 | return r; |
510 | } | |
511 | ||
512 | static efi_status_t EFIAPI efi_install_protocol_interface_ext(void **handle, | |
513 | efi_guid_t *protocol, int protocol_interface_type, | |
514 | void *protocol_interface) | |
515 | { | |
516 | EFI_ENTRY("%p, %p, %d, %p", handle, protocol, protocol_interface_type, | |
517 | protocol_interface); | |
518 | ||
519 | return EFI_EXIT(efi_install_protocol_interface(handle, protocol, | |
520 | protocol_interface_type, | |
521 | protocol_interface)); | |
bee91169 | 522 | } |
e0549f8a | 523 | |
bee91169 AG |
524 | static efi_status_t EFIAPI efi_reinstall_protocol_interface(void *handle, |
525 | efi_guid_t *protocol, void *old_interface, | |
526 | void *new_interface) | |
527 | { | |
528 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, old_interface, | |
529 | new_interface); | |
530 | return EFI_EXIT(EFI_ACCESS_DENIED); | |
531 | } | |
532 | ||
533 | static efi_status_t EFIAPI efi_uninstall_protocol_interface(void *handle, | |
534 | efi_guid_t *protocol, void *protocol_interface) | |
535 | { | |
4b6ed0d7 | 536 | struct list_head *lhandle; |
537 | int i; | |
538 | efi_status_t r = EFI_NOT_FOUND; | |
539 | ||
4b6ed0d7 | 540 | if (!handle || !protocol) { |
541 | r = EFI_INVALID_PARAMETER; | |
542 | goto out; | |
543 | } | |
544 | ||
545 | list_for_each(lhandle, &efi_obj_list) { | |
546 | struct efi_object *efiobj; | |
547 | efiobj = list_entry(lhandle, struct efi_object, link); | |
548 | ||
549 | if (efiobj->handle != handle) | |
550 | continue; | |
551 | ||
552 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
553 | struct efi_handler *handler = &efiobj->protocols[i]; | |
554 | const efi_guid_t *hprotocol = handler->guid; | |
555 | ||
556 | if (!hprotocol) | |
557 | continue; | |
558 | if (!guidcmp(hprotocol, protocol)) { | |
559 | if (handler->protocol_interface) { | |
560 | r = EFI_ACCESS_DENIED; | |
561 | } else { | |
562 | handler->guid = 0; | |
563 | r = EFI_SUCCESS; | |
564 | } | |
565 | goto out; | |
566 | } | |
567 | } | |
568 | } | |
569 | ||
570 | out: | |
3d8e1456 | 571 | return r; |
572 | } | |
573 | ||
574 | static efi_status_t EFIAPI efi_uninstall_protocol_interface_ext(void *handle, | |
575 | efi_guid_t *protocol, void *protocol_interface) | |
576 | { | |
577 | EFI_ENTRY("%p, %p, %p", handle, protocol, protocol_interface); | |
578 | ||
579 | return EFI_EXIT(efi_uninstall_protocol_interface(handle, protocol, | |
580 | protocol_interface)); | |
bee91169 AG |
581 | } |
582 | ||
583 | static efi_status_t EFIAPI efi_register_protocol_notify(efi_guid_t *protocol, | |
2fd945fe | 584 | struct efi_event *event, |
bee91169 AG |
585 | void **registration) |
586 | { | |
587 | EFI_ENTRY("%p, %p, %p", protocol, event, registration); | |
588 | return EFI_EXIT(EFI_OUT_OF_RESOURCES); | |
589 | } | |
590 | ||
591 | static int efi_search(enum efi_locate_search_type search_type, | |
592 | efi_guid_t *protocol, void *search_key, | |
593 | struct efi_object *efiobj) | |
594 | { | |
595 | int i; | |
596 | ||
597 | switch (search_type) { | |
598 | case all_handles: | |
599 | return 0; | |
600 | case by_register_notify: | |
601 | return -1; | |
602 | case by_protocol: | |
603 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
604 | const efi_guid_t *guid = efiobj->protocols[i].guid; | |
605 | if (guid && !guidcmp(guid, protocol)) | |
606 | return 0; | |
607 | } | |
608 | return -1; | |
609 | } | |
610 | ||
611 | return -1; | |
612 | } | |
613 | ||
614 | static efi_status_t EFIAPI efi_locate_handle( | |
615 | enum efi_locate_search_type search_type, | |
616 | efi_guid_t *protocol, void *search_key, | |
617 | unsigned long *buffer_size, efi_handle_t *buffer) | |
618 | { | |
619 | struct list_head *lhandle; | |
620 | unsigned long size = 0; | |
621 | ||
bee91169 AG |
622 | /* Count how much space we need */ |
623 | list_for_each(lhandle, &efi_obj_list) { | |
624 | struct efi_object *efiobj; | |
625 | efiobj = list_entry(lhandle, struct efi_object, link); | |
626 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
627 | size += sizeof(void*); | |
628 | } | |
629 | } | |
630 | ||
631 | if (*buffer_size < size) { | |
632 | *buffer_size = size; | |
26329584 | 633 | return EFI_BUFFER_TOO_SMALL; |
bee91169 AG |
634 | } |
635 | ||
636 | /* Then fill the array */ | |
637 | list_for_each(lhandle, &efi_obj_list) { | |
638 | struct efi_object *efiobj; | |
639 | efiobj = list_entry(lhandle, struct efi_object, link); | |
640 | if (!efi_search(search_type, protocol, search_key, efiobj)) { | |
641 | *(buffer++) = efiobj->handle; | |
642 | } | |
643 | } | |
644 | ||
645 | *buffer_size = size; | |
26329584 | 646 | return EFI_SUCCESS; |
647 | } | |
648 | ||
649 | static efi_status_t EFIAPI efi_locate_handle_ext( | |
650 | enum efi_locate_search_type search_type, | |
651 | efi_guid_t *protocol, void *search_key, | |
652 | unsigned long *buffer_size, efi_handle_t *buffer) | |
653 | { | |
654 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, | |
655 | buffer_size, buffer); | |
656 | ||
657 | return EFI_EXIT(efi_locate_handle(search_type, protocol, search_key, | |
658 | buffer_size, buffer)); | |
bee91169 AG |
659 | } |
660 | ||
661 | static efi_status_t EFIAPI efi_locate_device_path(efi_guid_t *protocol, | |
662 | struct efi_device_path **device_path, | |
663 | efi_handle_t *device) | |
664 | { | |
665 | EFI_ENTRY("%p, %p, %p", protocol, device_path, device); | |
666 | return EFI_EXIT(EFI_NOT_FOUND); | |
667 | } | |
668 | ||
d98cdf6a AG |
669 | /* Collapses configuration table entries, removing index i */ |
670 | static void efi_remove_configuration_table(int i) | |
671 | { | |
672 | struct efi_configuration_table *this = &efi_conf_table[i]; | |
673 | struct efi_configuration_table *next = &efi_conf_table[i+1]; | |
674 | struct efi_configuration_table *end = &efi_conf_table[systab.nr_tables]; | |
675 | ||
676 | memmove(this, next, (ulong)end - (ulong)next); | |
677 | systab.nr_tables--; | |
678 | } | |
679 | ||
488bf12d | 680 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table) |
bee91169 AG |
681 | { |
682 | int i; | |
683 | ||
bee91169 AG |
684 | /* Check for guid override */ |
685 | for (i = 0; i < systab.nr_tables; i++) { | |
686 | if (!guidcmp(guid, &efi_conf_table[i].guid)) { | |
d98cdf6a AG |
687 | if (table) |
688 | efi_conf_table[i].table = table; | |
689 | else | |
690 | efi_remove_configuration_table(i); | |
488bf12d | 691 | return EFI_SUCCESS; |
bee91169 AG |
692 | } |
693 | } | |
694 | ||
d98cdf6a AG |
695 | if (!table) |
696 | return EFI_NOT_FOUND; | |
697 | ||
bee91169 AG |
698 | /* No override, check for overflow */ |
699 | if (i >= ARRAY_SIZE(efi_conf_table)) | |
488bf12d | 700 | return EFI_OUT_OF_RESOURCES; |
bee91169 AG |
701 | |
702 | /* Add a new entry */ | |
703 | memcpy(&efi_conf_table[i].guid, guid, sizeof(*guid)); | |
704 | efi_conf_table[i].table = table; | |
aba5e919 | 705 | systab.nr_tables = i + 1; |
bee91169 | 706 | |
488bf12d AG |
707 | return EFI_SUCCESS; |
708 | } | |
709 | ||
710 | static efi_status_t EFIAPI efi_install_configuration_table_ext(efi_guid_t *guid, | |
711 | void *table) | |
712 | { | |
713 | EFI_ENTRY("%p, %p", guid, table); | |
714 | return EFI_EXIT(efi_install_configuration_table(guid, table)); | |
bee91169 AG |
715 | } |
716 | ||
717 | static efi_status_t EFIAPI efi_load_image(bool boot_policy, | |
718 | efi_handle_t parent_image, | |
719 | struct efi_device_path *file_path, | |
720 | void *source_buffer, | |
721 | unsigned long source_size, | |
722 | efi_handle_t *image_handle) | |
723 | { | |
724 | static struct efi_object loaded_image_info_obj = { | |
725 | .protocols = { | |
726 | { | |
727 | .guid = &efi_guid_loaded_image, | |
bee91169 AG |
728 | }, |
729 | }, | |
730 | }; | |
731 | struct efi_loaded_image *info; | |
732 | struct efi_object *obj; | |
733 | ||
734 | EFI_ENTRY("%d, %p, %p, %p, %ld, %p", boot_policy, parent_image, | |
735 | file_path, source_buffer, source_size, image_handle); | |
736 | info = malloc(sizeof(*info)); | |
b5349f74 | 737 | loaded_image_info_obj.protocols[0].protocol_interface = info; |
bee91169 AG |
738 | obj = malloc(sizeof(loaded_image_info_obj)); |
739 | memset(info, 0, sizeof(*info)); | |
740 | memcpy(obj, &loaded_image_info_obj, sizeof(loaded_image_info_obj)); | |
741 | obj->handle = info; | |
742 | info->file_path = file_path; | |
743 | info->reserved = efi_load_pe(source_buffer, info); | |
744 | if (!info->reserved) { | |
745 | free(info); | |
746 | free(obj); | |
747 | return EFI_EXIT(EFI_UNSUPPORTED); | |
748 | } | |
749 | ||
750 | *image_handle = info; | |
751 | list_add_tail(&obj->link, &efi_obj_list); | |
752 | ||
753 | return EFI_EXIT(EFI_SUCCESS); | |
754 | } | |
755 | ||
756 | static efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, | |
757 | unsigned long *exit_data_size, | |
758 | s16 **exit_data) | |
759 | { | |
760 | ulong (*entry)(void *image_handle, struct efi_system_table *st); | |
761 | struct efi_loaded_image *info = image_handle; | |
762 | ||
763 | EFI_ENTRY("%p, %p, %p", image_handle, exit_data_size, exit_data); | |
764 | entry = info->reserved; | |
765 | ||
766 | efi_is_direct_boot = false; | |
767 | ||
768 | /* call the image! */ | |
a86aeaf2 AG |
769 | if (setjmp(&info->exit_jmp)) { |
770 | /* We returned from the child image */ | |
771 | return EFI_EXIT(info->exit_status); | |
772 | } | |
773 | ||
af65db85 | 774 | __efi_nesting_dec(); |
c160d2f5 | 775 | __efi_exit_check(); |
bee91169 | 776 | entry(image_handle, &systab); |
c160d2f5 | 777 | __efi_entry_check(); |
af65db85 | 778 | __efi_nesting_inc(); |
bee91169 AG |
779 | |
780 | /* Should usually never get here */ | |
781 | return EFI_EXIT(EFI_SUCCESS); | |
782 | } | |
783 | ||
a86aeaf2 AG |
784 | static efi_status_t EFIAPI efi_exit(efi_handle_t image_handle, |
785 | efi_status_t exit_status, unsigned long exit_data_size, | |
786 | int16_t *exit_data) | |
bee91169 | 787 | { |
a86aeaf2 AG |
788 | struct efi_loaded_image *loaded_image_info = (void*)image_handle; |
789 | ||
bee91169 AG |
790 | EFI_ENTRY("%p, %ld, %ld, %p", image_handle, exit_status, |
791 | exit_data_size, exit_data); | |
a86aeaf2 AG |
792 | |
793 | loaded_image_info->exit_status = exit_status; | |
692fcdd8 | 794 | longjmp(&loaded_image_info->exit_jmp, 1); |
a86aeaf2 AG |
795 | |
796 | panic("EFI application exited"); | |
bee91169 AG |
797 | } |
798 | ||
799 | static struct efi_object *efi_search_obj(void *handle) | |
800 | { | |
801 | struct list_head *lhandle; | |
802 | ||
803 | list_for_each(lhandle, &efi_obj_list) { | |
804 | struct efi_object *efiobj; | |
805 | efiobj = list_entry(lhandle, struct efi_object, link); | |
806 | if (efiobj->handle == handle) | |
807 | return efiobj; | |
808 | } | |
809 | ||
810 | return NULL; | |
811 | } | |
812 | ||
813 | static efi_status_t EFIAPI efi_unload_image(void *image_handle) | |
814 | { | |
815 | struct efi_object *efiobj; | |
816 | ||
817 | EFI_ENTRY("%p", image_handle); | |
818 | efiobj = efi_search_obj(image_handle); | |
819 | if (efiobj) | |
820 | list_del(&efiobj->link); | |
821 | ||
822 | return EFI_EXIT(EFI_SUCCESS); | |
823 | } | |
824 | ||
825 | static void efi_exit_caches(void) | |
826 | { | |
827 | #if defined(CONFIG_ARM) && !defined(CONFIG_ARM64) | |
828 | /* | |
829 | * Grub on 32bit ARM needs to have caches disabled before jumping into | |
830 | * a zImage, but does not know of all cache layers. Give it a hand. | |
831 | */ | |
832 | if (efi_is_direct_boot) | |
833 | cleanup_before_linux(); | |
834 | #endif | |
835 | } | |
836 | ||
837 | static efi_status_t EFIAPI efi_exit_boot_services(void *image_handle, | |
838 | unsigned long map_key) | |
839 | { | |
840 | EFI_ENTRY("%p, %ld", image_handle, map_key); | |
841 | ||
b7b8410a AG |
842 | board_quiesce_devices(); |
843 | ||
bee91169 AG |
844 | /* Fix up caches for EFI payloads if necessary */ |
845 | efi_exit_caches(); | |
846 | ||
847 | /* This stops all lingering devices */ | |
848 | bootm_disable_interrupts(); | |
849 | ||
850 | /* Give the payload some time to boot */ | |
851 | WATCHDOG_RESET(); | |
852 | ||
853 | return EFI_EXIT(EFI_SUCCESS); | |
854 | } | |
855 | ||
856 | static efi_status_t EFIAPI efi_get_next_monotonic_count(uint64_t *count) | |
857 | { | |
858 | static uint64_t mono = 0; | |
859 | EFI_ENTRY("%p", count); | |
860 | *count = mono++; | |
861 | return EFI_EXIT(EFI_SUCCESS); | |
862 | } | |
863 | ||
864 | static efi_status_t EFIAPI efi_stall(unsigned long microseconds) | |
865 | { | |
866 | EFI_ENTRY("%ld", microseconds); | |
867 | udelay(microseconds); | |
868 | return EFI_EXIT(EFI_SUCCESS); | |
869 | } | |
870 | ||
871 | static efi_status_t EFIAPI efi_set_watchdog_timer(unsigned long timeout, | |
872 | uint64_t watchdog_code, | |
873 | unsigned long data_size, | |
874 | uint16_t *watchdog_data) | |
875 | { | |
876 | EFI_ENTRY("%ld, 0x%"PRIx64", %ld, %p", timeout, watchdog_code, | |
877 | data_size, watchdog_data); | |
b5104821 | 878 | return efi_unsupported(__func__); |
bee91169 AG |
879 | } |
880 | ||
881 | static efi_status_t EFIAPI efi_connect_controller( | |
882 | efi_handle_t controller_handle, | |
883 | efi_handle_t *driver_image_handle, | |
884 | struct efi_device_path *remain_device_path, | |
885 | bool recursive) | |
886 | { | |
887 | EFI_ENTRY("%p, %p, %p, %d", controller_handle, driver_image_handle, | |
888 | remain_device_path, recursive); | |
889 | return EFI_EXIT(EFI_NOT_FOUND); | |
890 | } | |
891 | ||
892 | static efi_status_t EFIAPI efi_disconnect_controller(void *controller_handle, | |
893 | void *driver_image_handle, | |
894 | void *child_handle) | |
895 | { | |
896 | EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, | |
897 | child_handle); | |
898 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
899 | } | |
900 | ||
901 | static efi_status_t EFIAPI efi_close_protocol(void *handle, | |
902 | efi_guid_t *protocol, | |
903 | void *agent_handle, | |
904 | void *controller_handle) | |
905 | { | |
906 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, agent_handle, | |
907 | controller_handle); | |
908 | return EFI_EXIT(EFI_NOT_FOUND); | |
909 | } | |
910 | ||
911 | static efi_status_t EFIAPI efi_open_protocol_information(efi_handle_t handle, | |
912 | efi_guid_t *protocol, | |
913 | struct efi_open_protocol_info_entry **entry_buffer, | |
914 | unsigned long *entry_count) | |
915 | { | |
916 | EFI_ENTRY("%p, %p, %p, %p", handle, protocol, entry_buffer, | |
917 | entry_count); | |
918 | return EFI_EXIT(EFI_NOT_FOUND); | |
919 | } | |
920 | ||
921 | static efi_status_t EFIAPI efi_protocols_per_handle(void *handle, | |
922 | efi_guid_t ***protocol_buffer, | |
923 | unsigned long *protocol_buffer_count) | |
924 | { | |
c0ebfc86 | 925 | unsigned long buffer_size; |
926 | struct efi_object *efiobj; | |
927 | unsigned long i, j; | |
928 | struct list_head *lhandle; | |
929 | efi_status_t r; | |
930 | ||
bee91169 AG |
931 | EFI_ENTRY("%p, %p, %p", handle, protocol_buffer, |
932 | protocol_buffer_count); | |
c0ebfc86 | 933 | |
934 | if (!handle || !protocol_buffer || !protocol_buffer_count) | |
935 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
936 | ||
937 | *protocol_buffer = NULL; | |
661c8327 | 938 | *protocol_buffer_count = 0; |
c0ebfc86 | 939 | list_for_each(lhandle, &efi_obj_list) { |
940 | efiobj = list_entry(lhandle, struct efi_object, link); | |
941 | ||
942 | if (efiobj->handle != handle) | |
943 | continue; | |
944 | ||
945 | /* Count protocols */ | |
946 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
947 | if (efiobj->protocols[i].guid) | |
948 | ++*protocol_buffer_count; | |
949 | } | |
950 | /* Copy guids */ | |
951 | if (*protocol_buffer_count) { | |
952 | buffer_size = sizeof(efi_guid_t *) * | |
953 | *protocol_buffer_count; | |
954 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, | |
955 | buffer_size, | |
956 | (void **)protocol_buffer); | |
957 | if (r != EFI_SUCCESS) | |
958 | return EFI_EXIT(r); | |
959 | j = 0; | |
960 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); ++i) { | |
961 | if (efiobj->protocols[i].guid) { | |
962 | (*protocol_buffer)[j] = (void *) | |
963 | efiobj->protocols[i].guid; | |
964 | ++j; | |
965 | } | |
966 | } | |
967 | } | |
968 | break; | |
969 | } | |
970 | ||
971 | return EFI_EXIT(EFI_SUCCESS); | |
bee91169 AG |
972 | } |
973 | ||
974 | static efi_status_t EFIAPI efi_locate_handle_buffer( | |
975 | enum efi_locate_search_type search_type, | |
976 | efi_guid_t *protocol, void *search_key, | |
977 | unsigned long *no_handles, efi_handle_t **buffer) | |
978 | { | |
c2e703f9 | 979 | efi_status_t r; |
980 | unsigned long buffer_size = 0; | |
981 | ||
bee91169 AG |
982 | EFI_ENTRY("%d, %p, %p, %p, %p", search_type, protocol, search_key, |
983 | no_handles, buffer); | |
c2e703f9 | 984 | |
985 | if (!no_handles || !buffer) { | |
986 | r = EFI_INVALID_PARAMETER; | |
987 | goto out; | |
988 | } | |
989 | *no_handles = 0; | |
990 | *buffer = NULL; | |
991 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
992 | *buffer); | |
993 | if (r != EFI_BUFFER_TOO_SMALL) | |
994 | goto out; | |
995 | r = efi_allocate_pool(EFI_ALLOCATE_ANY_PAGES, buffer_size, | |
996 | (void **)buffer); | |
997 | if (r != EFI_SUCCESS) | |
998 | goto out; | |
999 | r = efi_locate_handle(search_type, protocol, search_key, &buffer_size, | |
1000 | *buffer); | |
1001 | if (r == EFI_SUCCESS) | |
1002 | *no_handles = buffer_size / sizeof(void *); | |
1003 | out: | |
1004 | return EFI_EXIT(r); | |
bee91169 AG |
1005 | } |
1006 | ||
bee91169 AG |
1007 | static efi_status_t EFIAPI efi_locate_protocol(efi_guid_t *protocol, |
1008 | void *registration, | |
1009 | void **protocol_interface) | |
1010 | { | |
88adae5e | 1011 | struct list_head *lhandle; |
bee91169 AG |
1012 | int i; |
1013 | ||
1014 | EFI_ENTRY("%p, %p, %p", protocol, registration, protocol_interface); | |
88adae5e | 1015 | |
1016 | if (!protocol || !protocol_interface) | |
1017 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1018 | ||
1019 | list_for_each(lhandle, &efi_obj_list) { | |
1020 | struct efi_object *efiobj; | |
1021 | ||
1022 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1023 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1024 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1025 | ||
1026 | if (!handler->guid) | |
1027 | continue; | |
1028 | if (!guidcmp(handler->guid, protocol)) { | |
1029 | *protocol_interface = | |
1030 | handler->protocol_interface; | |
1031 | return EFI_EXIT(EFI_SUCCESS); | |
1032 | } | |
bee91169 AG |
1033 | } |
1034 | } | |
88adae5e | 1035 | *protocol_interface = NULL; |
bee91169 AG |
1036 | |
1037 | return EFI_EXIT(EFI_NOT_FOUND); | |
1038 | } | |
1039 | ||
1040 | static efi_status_t EFIAPI efi_install_multiple_protocol_interfaces( | |
1041 | void **handle, ...) | |
1042 | { | |
1043 | EFI_ENTRY("%p", handle); | |
58b83586 | 1044 | |
1045 | va_list argptr; | |
1046 | efi_guid_t *protocol; | |
1047 | void *protocol_interface; | |
1048 | efi_status_t r = EFI_SUCCESS; | |
1049 | int i = 0; | |
1050 | ||
1051 | if (!handle) | |
1052 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1053 | ||
1054 | va_start(argptr, handle); | |
1055 | for (;;) { | |
1056 | protocol = va_arg(argptr, efi_guid_t*); | |
1057 | if (!protocol) | |
1058 | break; | |
1059 | protocol_interface = va_arg(argptr, void*); | |
1060 | r = efi_install_protocol_interface(handle, protocol, | |
1061 | EFI_NATIVE_INTERFACE, | |
1062 | protocol_interface); | |
1063 | if (r != EFI_SUCCESS) | |
1064 | break; | |
1065 | i++; | |
1066 | } | |
1067 | va_end(argptr); | |
1068 | if (r == EFI_SUCCESS) | |
1069 | return EFI_EXIT(r); | |
1070 | ||
1071 | /* If an error occured undo all changes. */ | |
1072 | va_start(argptr, handle); | |
1073 | for (; i; --i) { | |
1074 | protocol = va_arg(argptr, efi_guid_t*); | |
1075 | protocol_interface = va_arg(argptr, void*); | |
1076 | efi_uninstall_protocol_interface(handle, protocol, | |
1077 | protocol_interface); | |
1078 | } | |
1079 | va_end(argptr); | |
1080 | ||
1081 | return EFI_EXIT(r); | |
bee91169 AG |
1082 | } |
1083 | ||
1084 | static efi_status_t EFIAPI efi_uninstall_multiple_protocol_interfaces( | |
1085 | void *handle, ...) | |
1086 | { | |
1087 | EFI_ENTRY("%p", handle); | |
1088 | return EFI_EXIT(EFI_INVALID_PARAMETER); | |
1089 | } | |
1090 | ||
1091 | static efi_status_t EFIAPI efi_calculate_crc32(void *data, | |
1092 | unsigned long data_size, | |
1093 | uint32_t *crc32_p) | |
1094 | { | |
1095 | EFI_ENTRY("%p, %ld", data, data_size); | |
1096 | *crc32_p = crc32(0, data, data_size); | |
1097 | return EFI_EXIT(EFI_SUCCESS); | |
1098 | } | |
1099 | ||
1100 | static void EFIAPI efi_copy_mem(void *destination, void *source, | |
1101 | unsigned long length) | |
1102 | { | |
1103 | EFI_ENTRY("%p, %p, %ld", destination, source, length); | |
1104 | memcpy(destination, source, length); | |
1105 | } | |
1106 | ||
1107 | static void EFIAPI efi_set_mem(void *buffer, unsigned long size, uint8_t value) | |
1108 | { | |
1109 | EFI_ENTRY("%p, %ld, 0x%x", buffer, size, value); | |
1110 | memset(buffer, value, size); | |
1111 | } | |
1112 | ||
1113 | static efi_status_t EFIAPI efi_open_protocol( | |
1114 | void *handle, efi_guid_t *protocol, | |
1115 | void **protocol_interface, void *agent_handle, | |
1116 | void *controller_handle, uint32_t attributes) | |
1117 | { | |
1118 | struct list_head *lhandle; | |
1119 | int i; | |
69baec67 | 1120 | efi_status_t r = EFI_INVALID_PARAMETER; |
bee91169 AG |
1121 | |
1122 | EFI_ENTRY("%p, %p, %p, %p, %p, 0x%x", handle, protocol, | |
1123 | protocol_interface, agent_handle, controller_handle, | |
1124 | attributes); | |
b5349f74 | 1125 | |
69baec67 | 1126 | if (!handle || !protocol || |
1127 | (!protocol_interface && attributes != | |
1128 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL)) { | |
1129 | goto out; | |
1130 | } | |
1131 | ||
1132 | switch (attributes) { | |
1133 | case EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL: | |
1134 | case EFI_OPEN_PROTOCOL_GET_PROTOCOL: | |
1135 | case EFI_OPEN_PROTOCOL_TEST_PROTOCOL: | |
1136 | break; | |
1137 | case EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER: | |
1138 | if (controller_handle == handle) | |
1139 | goto out; | |
1140 | case EFI_OPEN_PROTOCOL_BY_DRIVER: | |
1141 | case EFI_OPEN_PROTOCOL_BY_DRIVER | EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1142 | if (controller_handle == NULL) | |
1143 | goto out; | |
1144 | case EFI_OPEN_PROTOCOL_EXCLUSIVE: | |
1145 | if (agent_handle == NULL) | |
1146 | goto out; | |
1147 | break; | |
1148 | default: | |
b5349f74 | 1149 | goto out; |
1150 | } | |
1151 | ||
bee91169 AG |
1152 | list_for_each(lhandle, &efi_obj_list) { |
1153 | struct efi_object *efiobj; | |
1154 | efiobj = list_entry(lhandle, struct efi_object, link); | |
1155 | ||
1156 | if (efiobj->handle != handle) | |
1157 | continue; | |
1158 | ||
1159 | for (i = 0; i < ARRAY_SIZE(efiobj->protocols); i++) { | |
1160 | struct efi_handler *handler = &efiobj->protocols[i]; | |
1161 | const efi_guid_t *hprotocol = handler->guid; | |
1162 | if (!hprotocol) | |
4b6ed0d7 | 1163 | continue; |
bee91169 | 1164 | if (!guidcmp(hprotocol, protocol)) { |
b5349f74 | 1165 | if (attributes != |
1166 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL) { | |
1167 | *protocol_interface = | |
1168 | handler->protocol_interface; | |
1169 | } | |
1170 | r = EFI_SUCCESS; | |
bee91169 AG |
1171 | goto out; |
1172 | } | |
1173 | } | |
69baec67 | 1174 | goto unsupported; |
bee91169 AG |
1175 | } |
1176 | ||
69baec67 | 1177 | unsupported: |
1178 | r = EFI_UNSUPPORTED; | |
bee91169 AG |
1179 | out: |
1180 | return EFI_EXIT(r); | |
1181 | } | |
1182 | ||
1183 | static efi_status_t EFIAPI efi_handle_protocol(void *handle, | |
1184 | efi_guid_t *protocol, | |
1185 | void **protocol_interface) | |
1186 | { | |
8e1d329f | 1187 | return efi_open_protocol(handle, protocol, protocol_interface, NULL, |
1188 | NULL, EFI_OPEN_PROTOCOL_BY_HANDLE_PROTOCOL); | |
bee91169 AG |
1189 | } |
1190 | ||
1191 | static const struct efi_boot_services efi_boot_services = { | |
1192 | .hdr = { | |
1193 | .headersize = sizeof(struct efi_table_hdr), | |
1194 | }, | |
1195 | .raise_tpl = efi_raise_tpl, | |
1196 | .restore_tpl = efi_restore_tpl, | |
1197 | .allocate_pages = efi_allocate_pages_ext, | |
1198 | .free_pages = efi_free_pages_ext, | |
1199 | .get_memory_map = efi_get_memory_map_ext, | |
ead1274b | 1200 | .allocate_pool = efi_allocate_pool_ext, |
42417bc8 | 1201 | .free_pool = efi_free_pool_ext, |
49deb455 | 1202 | .create_event = efi_create_event_ext, |
bfc72462 | 1203 | .set_timer = efi_set_timer_ext, |
bee91169 | 1204 | .wait_for_event = efi_wait_for_event, |
c6841592 | 1205 | .signal_event = efi_signal_event_ext, |
bee91169 AG |
1206 | .close_event = efi_close_event, |
1207 | .check_event = efi_check_event, | |
8bee5a3c | 1208 | .install_protocol_interface = efi_install_protocol_interface_ext, |
bee91169 | 1209 | .reinstall_protocol_interface = efi_reinstall_protocol_interface, |
3d8e1456 | 1210 | .uninstall_protocol_interface = efi_uninstall_protocol_interface_ext, |
bee91169 AG |
1211 | .handle_protocol = efi_handle_protocol, |
1212 | .reserved = NULL, | |
1213 | .register_protocol_notify = efi_register_protocol_notify, | |
26329584 | 1214 | .locate_handle = efi_locate_handle_ext, |
bee91169 | 1215 | .locate_device_path = efi_locate_device_path, |
488bf12d | 1216 | .install_configuration_table = efi_install_configuration_table_ext, |
bee91169 AG |
1217 | .load_image = efi_load_image, |
1218 | .start_image = efi_start_image, | |
a86aeaf2 | 1219 | .exit = efi_exit, |
bee91169 AG |
1220 | .unload_image = efi_unload_image, |
1221 | .exit_boot_services = efi_exit_boot_services, | |
1222 | .get_next_monotonic_count = efi_get_next_monotonic_count, | |
1223 | .stall = efi_stall, | |
1224 | .set_watchdog_timer = efi_set_watchdog_timer, | |
1225 | .connect_controller = efi_connect_controller, | |
1226 | .disconnect_controller = efi_disconnect_controller, | |
1227 | .open_protocol = efi_open_protocol, | |
1228 | .close_protocol = efi_close_protocol, | |
1229 | .open_protocol_information = efi_open_protocol_information, | |
1230 | .protocols_per_handle = efi_protocols_per_handle, | |
1231 | .locate_handle_buffer = efi_locate_handle_buffer, | |
1232 | .locate_protocol = efi_locate_protocol, | |
1233 | .install_multiple_protocol_interfaces = efi_install_multiple_protocol_interfaces, | |
1234 | .uninstall_multiple_protocol_interfaces = efi_uninstall_multiple_protocol_interfaces, | |
1235 | .calculate_crc32 = efi_calculate_crc32, | |
1236 | .copy_mem = efi_copy_mem, | |
1237 | .set_mem = efi_set_mem, | |
1238 | }; | |
1239 | ||
1240 | ||
3c63db9c | 1241 | static uint16_t __efi_runtime_data firmware_vendor[] = |
bee91169 AG |
1242 | { 'D','a','s',' ','U','-','b','o','o','t',0 }; |
1243 | ||
3c63db9c | 1244 | struct efi_system_table __efi_runtime_data systab = { |
bee91169 AG |
1245 | .hdr = { |
1246 | .signature = EFI_SYSTEM_TABLE_SIGNATURE, | |
1247 | .revision = 0x20005, /* 2.5 */ | |
1248 | .headersize = sizeof(struct efi_table_hdr), | |
1249 | }, | |
1250 | .fw_vendor = (long)firmware_vendor, | |
1251 | .con_in = (void*)&efi_con_in, | |
1252 | .con_out = (void*)&efi_con_out, | |
1253 | .std_err = (void*)&efi_con_out, | |
1254 | .runtime = (void*)&efi_runtime_services, | |
1255 | .boottime = (void*)&efi_boot_services, | |
1256 | .nr_tables = 0, | |
1257 | .tables = (void*)efi_conf_table, | |
1258 | }; |