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