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