1 /* SPDX-License-Identifier: GPL-2.0 */
2
3 #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H
4 #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H
5
6 #include <linux/compiler.h>
7 #include <linux/efi.h>
8 #include <linux/kernel.h>
9 #include <linux/kern_levels.h>
10 #include <linux/types.h>
11 #include <asm/efi.h>
12
13 /*
14 * __init annotations should not be used in the EFI stub, since the code is
15 * either included in the decompressor (x86, ARM) where they have no effect,
16 * or the whole stub is __init annotated at the section level (arm64), by
17 * renaming the sections, in which case the __init annotation will be
18 * redundant, and will result in section names like .init.init.text, and our
19 * linker script does not expect that.
20 */
21 #undef __init
22
23 /*
24 * Allow the platform to override the allocation granularity: this allows
25 * systems that have the capability to run with a larger page size to deal
26 * with the allocations for initrd and fdt more efficiently.
27 */
28 #ifndef EFI_ALLOC_ALIGN
29 #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE
30 #endif
31
32 extern bool efi_nochunk;
33 extern bool efi_nokaslr;
34 extern int efi_loglevel;
35 extern bool efi_novamap;
36
37 extern const efi_system_table_t *efi_system_table;
38
39 typedef union efi_dxe_services_table efi_dxe_services_table_t;
40 extern const efi_dxe_services_table_t *efi_dxe_table;
41
42 efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
43 efi_system_table_t *sys_table_arg);
44
45 #ifndef ARCH_HAS_EFISTUB_WRAPPERS
46
47 #define efi_is_native() (true)
48 #define efi_bs_call(func, ...) efi_system_table->boottime->func(__VA_ARGS__)
49 #define efi_rt_call(func, ...) efi_system_table->runtime->func(__VA_ARGS__)
50 #define efi_dxe_call(func, ...) efi_dxe_table->func(__VA_ARGS__)
51 #define efi_table_attr(inst, attr) (inst->attr)
52 #define efi_call_proto(inst, func, ...) inst->func(inst, ##__VA_ARGS__)
53
54 #endif
55
56 #define efi_info(fmt, ...) \
57 efi_printk(KERN_INFO fmt, ##__VA_ARGS__)
58 #define efi_warn(fmt, ...) \
59 efi_printk(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
60 #define efi_err(fmt, ...) \
61 efi_printk(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__)
62 #define efi_debug(fmt, ...) \
63 efi_printk(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__)
64
65 #define efi_printk_once(fmt, ...) \
66 ({ \
67 static bool __print_once; \
68 bool __ret_print_once = !__print_once; \
69 \
70 if (!__print_once) { \
71 __print_once = true; \
72 efi_printk(fmt, ##__VA_ARGS__); \
73 } \
74 __ret_print_once; \
75 })
76
77 #define efi_info_once(fmt, ...) \
78 efi_printk_once(KERN_INFO fmt, ##__VA_ARGS__)
79 #define efi_warn_once(fmt, ...) \
80 efi_printk_once(KERN_WARNING "WARNING: " fmt, ##__VA_ARGS__)
81 #define efi_err_once(fmt, ...) \
82 efi_printk_once(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__)
83 #define efi_debug_once(fmt, ...) \
84 efi_printk_once(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__)
85
86 /* Helper macros for the usual case of using simple C variables: */
87 #ifndef fdt_setprop_inplace_var
88 #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \
89 fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var))
90 #endif
91
92 #ifndef fdt_setprop_var
93 #define fdt_setprop_var(fdt, node_offset, name, var) \
94 fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var))
95 #endif
96
97 #define get_efi_var(name, vendor, ...) \
98 efi_rt_call(get_variable, (efi_char16_t *)(name), \
99 (efi_guid_t *)(vendor), __VA_ARGS__)
100
101 #define set_efi_var(name, vendor, ...) \
102 efi_rt_call(set_variable, (efi_char16_t *)(name), \
103 (efi_guid_t *)(vendor), __VA_ARGS__)
104
105 #define efi_get_handle_at(array, idx) \
106 (efi_is_native() ? (array)[idx] \
107 : (efi_handle_t)(unsigned long)((u32 *)(array))[idx])
108
109 #define efi_get_handle_num(size) \
110 ((size) / (efi_is_native() ? sizeof(efi_handle_t) : sizeof(u32)))
111
112 #define for_each_efi_handle(handle, array, size, i) \
113 for (i = 0; \
114 i < efi_get_handle_num(size) && \
115 ((handle = efi_get_handle_at((array), i)) || true); \
116 i++)
117
118 static inline
efi_set_u64_split(u64 data,u32 * lo,u32 * hi)119 void efi_set_u64_split(u64 data, u32 *lo, u32 *hi)
120 {
121 *lo = lower_32_bits(data);
122 *hi = upper_32_bits(data);
123 }
124
125 /*
126 * Allocation types for calls to boottime->allocate_pages.
127 */
128 #define EFI_ALLOCATE_ANY_PAGES 0
129 #define EFI_ALLOCATE_MAX_ADDRESS 1
130 #define EFI_ALLOCATE_ADDRESS 2
131 #define EFI_MAX_ALLOCATE_TYPE 3
132
133 /*
134 * The type of search to perform when calling boottime->locate_handle
135 */
136 #define EFI_LOCATE_ALL_HANDLES 0
137 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
138 #define EFI_LOCATE_BY_PROTOCOL 2
139
140 /*
141 * boottime->stall takes the time period in microseconds
142 */
143 #define EFI_USEC_PER_SEC 1000000
144
145 /*
146 * boottime->set_timer takes the time in 100ns units
147 */
148 #define EFI_100NSEC_PER_USEC ((u64)10)
149
150 /*
151 * An efi_boot_memmap is used by efi_get_memory_map() to return the
152 * EFI memory map in a dynamically allocated buffer.
153 *
154 * The buffer allocated for the EFI memory map includes extra room for
155 * a minimum of EFI_MMAP_NR_SLACK_SLOTS additional EFI memory descriptors.
156 * This facilitates the reuse of the EFI memory map buffer when a second
157 * call to ExitBootServices() is needed because of intervening changes to
158 * the EFI memory map. Other related structures, e.g. x86 e820ext, need
159 * to factor in this headroom requirement as well.
160 */
161 #define EFI_MMAP_NR_SLACK_SLOTS 8
162
163 typedef struct efi_generic_dev_path efi_device_path_protocol_t;
164
165 union efi_device_path_to_text_protocol {
166 struct {
167 efi_char16_t *(__efiapi *convert_device_node_to_text)(
168 const efi_device_path_protocol_t *,
169 bool, bool);
170 efi_char16_t *(__efiapi *convert_device_path_to_text)(
171 const efi_device_path_protocol_t *,
172 bool, bool);
173 };
174 struct {
175 u32 convert_device_node_to_text;
176 u32 convert_device_path_to_text;
177 } mixed_mode;
178 };
179
180 typedef union efi_device_path_to_text_protocol efi_device_path_to_text_protocol_t;
181
182 typedef void *efi_event_t;
183 /* Note that notifications won't work in mixed mode */
184 typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *);
185
186 #define EFI_EVT_TIMER 0x80000000U
187 #define EFI_EVT_RUNTIME 0x40000000U
188 #define EFI_EVT_NOTIFY_WAIT 0x00000100U
189 #define EFI_EVT_NOTIFY_SIGNAL 0x00000200U
190
191 /**
192 * efi_set_event_at() - add event to events array
193 *
194 * @events: array of UEFI events
195 * @ids: index where to put the event in the array
196 * @event: event to add to the aray
197 *
198 * boottime->wait_for_event() takes an array of events as input.
199 * Provide a helper to set it up correctly for mixed mode.
200 */
201 static inline
efi_set_event_at(efi_event_t * events,size_t idx,efi_event_t event)202 void efi_set_event_at(efi_event_t *events, size_t idx, efi_event_t event)
203 {
204 if (efi_is_native())
205 events[idx] = event;
206 else
207 ((u32 *)events)[idx] = (u32)(unsigned long)event;
208 }
209
210 #define EFI_TPL_APPLICATION 4
211 #define EFI_TPL_CALLBACK 8
212 #define EFI_TPL_NOTIFY 16
213 #define EFI_TPL_HIGH_LEVEL 31
214
215 typedef enum {
216 EfiTimerCancel,
217 EfiTimerPeriodic,
218 EfiTimerRelative
219 } EFI_TIMER_DELAY;
220
221 /*
222 * EFI Boot Services table
223 */
224 union efi_boot_services {
225 struct {
226 efi_table_hdr_t hdr;
227 void *raise_tpl;
228 void *restore_tpl;
229 efi_status_t (__efiapi *allocate_pages)(int, int, unsigned long,
230 efi_physical_addr_t *);
231 efi_status_t (__efiapi *free_pages)(efi_physical_addr_t,
232 unsigned long);
233 efi_status_t (__efiapi *get_memory_map)(unsigned long *, void *,
234 unsigned long *,
235 unsigned long *, u32 *);
236 efi_status_t (__efiapi *allocate_pool)(int, unsigned long,
237 void **);
238 efi_status_t (__efiapi *free_pool)(void *);
239 efi_status_t (__efiapi *create_event)(u32, unsigned long,
240 efi_event_notify_t, void *,
241 efi_event_t *);
242 efi_status_t (__efiapi *set_timer)(efi_event_t,
243 EFI_TIMER_DELAY, u64);
244 efi_status_t (__efiapi *wait_for_event)(unsigned long,
245 efi_event_t *,
246 unsigned long *);
247 void *signal_event;
248 efi_status_t (__efiapi *close_event)(efi_event_t);
249 void *check_event;
250 void *install_protocol_interface;
251 void *reinstall_protocol_interface;
252 void *uninstall_protocol_interface;
253 efi_status_t (__efiapi *handle_protocol)(efi_handle_t,
254 efi_guid_t *, void **);
255 void *__reserved;
256 void *register_protocol_notify;
257 efi_status_t (__efiapi *locate_handle)(int, efi_guid_t *,
258 void *, unsigned long *,
259 efi_handle_t *);
260 efi_status_t (__efiapi *locate_device_path)(efi_guid_t *,
261 efi_device_path_protocol_t **,
262 efi_handle_t *);
263 efi_status_t (__efiapi *install_configuration_table)(efi_guid_t *,
264 void *);
265 efi_status_t (__efiapi *load_image)(bool, efi_handle_t,
266 efi_device_path_protocol_t *,
267 void *, unsigned long,
268 efi_handle_t *);
269 efi_status_t (__efiapi *start_image)(efi_handle_t, unsigned long *,
270 efi_char16_t **);
271 efi_status_t __noreturn (__efiapi *exit)(efi_handle_t,
272 efi_status_t,
273 unsigned long,
274 efi_char16_t *);
275 efi_status_t (__efiapi *unload_image)(efi_handle_t);
276 efi_status_t (__efiapi *exit_boot_services)(efi_handle_t,
277 unsigned long);
278 void *get_next_monotonic_count;
279 efi_status_t (__efiapi *stall)(unsigned long);
280 void *set_watchdog_timer;
281 void *connect_controller;
282 efi_status_t (__efiapi *disconnect_controller)(efi_handle_t,
283 efi_handle_t,
284 efi_handle_t);
285 void *open_protocol;
286 void *close_protocol;
287 void *open_protocol_information;
288 void *protocols_per_handle;
289 void *locate_handle_buffer;
290 efi_status_t (__efiapi *locate_protocol)(efi_guid_t *, void *,
291 void **);
292 efi_status_t (__efiapi *install_multiple_protocol_interfaces)(efi_handle_t *, ...);
293 efi_status_t (__efiapi *uninstall_multiple_protocol_interfaces)(efi_handle_t, ...);
294 void *calculate_crc32;
295 void (__efiapi *copy_mem)(void *, const void *, unsigned long);
296 void (__efiapi *set_mem)(void *, unsigned long, unsigned char);
297 void *create_event_ex;
298 };
299 struct {
300 efi_table_hdr_t hdr;
301 u32 raise_tpl;
302 u32 restore_tpl;
303 u32 allocate_pages;
304 u32 free_pages;
305 u32 get_memory_map;
306 u32 allocate_pool;
307 u32 free_pool;
308 u32 create_event;
309 u32 set_timer;
310 u32 wait_for_event;
311 u32 signal_event;
312 u32 close_event;
313 u32 check_event;
314 u32 install_protocol_interface;
315 u32 reinstall_protocol_interface;
316 u32 uninstall_protocol_interface;
317 u32 handle_protocol;
318 u32 __reserved;
319 u32 register_protocol_notify;
320 u32 locate_handle;
321 u32 locate_device_path;
322 u32 install_configuration_table;
323 u32 load_image;
324 u32 start_image;
325 u32 exit;
326 u32 unload_image;
327 u32 exit_boot_services;
328 u32 get_next_monotonic_count;
329 u32 stall;
330 u32 set_watchdog_timer;
331 u32 connect_controller;
332 u32 disconnect_controller;
333 u32 open_protocol;
334 u32 close_protocol;
335 u32 open_protocol_information;
336 u32 protocols_per_handle;
337 u32 locate_handle_buffer;
338 u32 locate_protocol;
339 u32 install_multiple_protocol_interfaces;
340 u32 uninstall_multiple_protocol_interfaces;
341 u32 calculate_crc32;
342 u32 copy_mem;
343 u32 set_mem;
344 u32 create_event_ex;
345 } mixed_mode;
346 };
347
348 typedef enum {
349 EfiGcdMemoryTypeNonExistent,
350 EfiGcdMemoryTypeReserved,
351 EfiGcdMemoryTypeSystemMemory,
352 EfiGcdMemoryTypeMemoryMappedIo,
353 EfiGcdMemoryTypePersistent,
354 EfiGcdMemoryTypeMoreReliable,
355 EfiGcdMemoryTypeMaximum
356 } efi_gcd_memory_type_t;
357
358 typedef struct {
359 efi_physical_addr_t base_address;
360 u64 length;
361 u64 capabilities;
362 u64 attributes;
363 efi_gcd_memory_type_t gcd_memory_type;
364 void *image_handle;
365 void *device_handle;
366 } efi_gcd_memory_space_desc_t;
367
368 /*
369 * EFI DXE Services table
370 */
371 union efi_dxe_services_table {
372 struct {
373 efi_table_hdr_t hdr;
374 void *add_memory_space;
375 void *allocate_memory_space;
376 void *free_memory_space;
377 void *remove_memory_space;
378 efi_status_t (__efiapi *get_memory_space_descriptor)(efi_physical_addr_t,
379 efi_gcd_memory_space_desc_t *);
380 efi_status_t (__efiapi *set_memory_space_attributes)(efi_physical_addr_t,
381 u64, u64);
382 void *get_memory_space_map;
383 void *add_io_space;
384 void *allocate_io_space;
385 void *free_io_space;
386 void *remove_io_space;
387 void *get_io_space_descriptor;
388 void *get_io_space_map;
389 void *dispatch;
390 void *schedule;
391 void *trust;
392 void *process_firmware_volume;
393 void *set_memory_space_capabilities;
394 };
395 struct {
396 efi_table_hdr_t hdr;
397 u32 add_memory_space;
398 u32 allocate_memory_space;
399 u32 free_memory_space;
400 u32 remove_memory_space;
401 u32 get_memory_space_descriptor;
402 u32 set_memory_space_attributes;
403 u32 get_memory_space_map;
404 u32 add_io_space;
405 u32 allocate_io_space;
406 u32 free_io_space;
407 u32 remove_io_space;
408 u32 get_io_space_descriptor;
409 u32 get_io_space_map;
410 u32 dispatch;
411 u32 schedule;
412 u32 trust;
413 u32 process_firmware_volume;
414 u32 set_memory_space_capabilities;
415 } mixed_mode;
416 };
417
418 typedef union efi_uga_draw_protocol efi_uga_draw_protocol_t;
419
420 union efi_uga_draw_protocol {
421 struct {
422 efi_status_t (__efiapi *get_mode)(efi_uga_draw_protocol_t *,
423 u32*, u32*, u32*, u32*);
424 void *set_mode;
425 void *blt;
426 };
427 struct {
428 u32 get_mode;
429 u32 set_mode;
430 u32 blt;
431 } mixed_mode;
432 };
433
434 typedef struct {
435 u16 scan_code;
436 efi_char16_t unicode_char;
437 } efi_input_key_t;
438
439 union efi_simple_text_input_protocol {
440 struct {
441 void *reset;
442 efi_status_t (__efiapi *read_keystroke)(efi_simple_text_input_protocol_t *,
443 efi_input_key_t *);
444 efi_event_t wait_for_key;
445 };
446 struct {
447 u32 reset;
448 u32 read_keystroke;
449 u32 wait_for_key;
450 } mixed_mode;
451 };
452
453 efi_status_t efi_wait_for_key(unsigned long usec, efi_input_key_t *key);
454
455 union efi_simple_text_output_protocol {
456 struct {
457 void *reset;
458 efi_status_t (__efiapi *output_string)(efi_simple_text_output_protocol_t *,
459 efi_char16_t *);
460 void *test_string;
461 };
462 struct {
463 u32 reset;
464 u32 output_string;
465 u32 test_string;
466 } mixed_mode;
467 };
468
469 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
470 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
471 #define PIXEL_BIT_MASK 2
472 #define PIXEL_BLT_ONLY 3
473 #define PIXEL_FORMAT_MAX 4
474
475 typedef struct {
476 u32 red_mask;
477 u32 green_mask;
478 u32 blue_mask;
479 u32 reserved_mask;
480 } efi_pixel_bitmask_t;
481
482 typedef struct {
483 u32 version;
484 u32 horizontal_resolution;
485 u32 vertical_resolution;
486 int pixel_format;
487 efi_pixel_bitmask_t pixel_information;
488 u32 pixels_per_scan_line;
489 } efi_graphics_output_mode_info_t;
490
491 typedef union efi_graphics_output_protocol_mode efi_graphics_output_protocol_mode_t;
492
493 union efi_graphics_output_protocol_mode {
494 struct {
495 u32 max_mode;
496 u32 mode;
497 efi_graphics_output_mode_info_t *info;
498 unsigned long size_of_info;
499 efi_physical_addr_t frame_buffer_base;
500 unsigned long frame_buffer_size;
501 };
502 struct {
503 u32 max_mode;
504 u32 mode;
505 u32 info;
506 u32 size_of_info;
507 u64 frame_buffer_base;
508 u32 frame_buffer_size;
509 } mixed_mode;
510 };
511
512 typedef union efi_graphics_output_protocol efi_graphics_output_protocol_t;
513
514 union efi_graphics_output_protocol {
515 struct {
516 efi_status_t (__efiapi *query_mode)(efi_graphics_output_protocol_t *,
517 u32, unsigned long *,
518 efi_graphics_output_mode_info_t **);
519 efi_status_t (__efiapi *set_mode) (efi_graphics_output_protocol_t *, u32);
520 void *blt;
521 efi_graphics_output_protocol_mode_t *mode;
522 };
523 struct {
524 u32 query_mode;
525 u32 set_mode;
526 u32 blt;
527 u32 mode;
528 } mixed_mode;
529 };
530
531 typedef union {
532 struct {
533 u32 revision;
534 efi_handle_t parent_handle;
535 efi_system_table_t *system_table;
536 efi_handle_t device_handle;
537 void *file_path;
538 void *reserved;
539 u32 load_options_size;
540 void *load_options;
541 void *image_base;
542 __aligned_u64 image_size;
543 unsigned int image_code_type;
544 unsigned int image_data_type;
545 efi_status_t (__efiapi *unload)(efi_handle_t image_handle);
546 };
547 struct {
548 u32 revision;
549 u32 parent_handle;
550 u32 system_table;
551 u32 device_handle;
552 u32 file_path;
553 u32 reserved;
554 u32 load_options_size;
555 u32 load_options;
556 u32 image_base;
557 __aligned_u64 image_size;
558 u32 image_code_type;
559 u32 image_data_type;
560 u32 unload;
561 } mixed_mode;
562 } efi_loaded_image_t;
563
564 typedef struct {
565 u64 size;
566 u64 file_size;
567 u64 phys_size;
568 efi_time_t create_time;
569 efi_time_t last_access_time;
570 efi_time_t modification_time;
571 __aligned_u64 attribute;
572 efi_char16_t filename[];
573 } efi_file_info_t;
574
575 typedef struct efi_file_protocol efi_file_protocol_t;
576
577 struct efi_file_protocol {
578 u64 revision;
579 efi_status_t (__efiapi *open) (efi_file_protocol_t *,
580 efi_file_protocol_t **,
581 efi_char16_t *, u64, u64);
582 efi_status_t (__efiapi *close) (efi_file_protocol_t *);
583 efi_status_t (__efiapi *delete) (efi_file_protocol_t *);
584 efi_status_t (__efiapi *read) (efi_file_protocol_t *,
585 unsigned long *, void *);
586 efi_status_t (__efiapi *write) (efi_file_protocol_t *,
587 unsigned long, void *);
588 efi_status_t (__efiapi *get_position)(efi_file_protocol_t *, u64 *);
589 efi_status_t (__efiapi *set_position)(efi_file_protocol_t *, u64);
590 efi_status_t (__efiapi *get_info) (efi_file_protocol_t *,
591 efi_guid_t *, unsigned long *,
592 void *);
593 efi_status_t (__efiapi *set_info) (efi_file_protocol_t *,
594 efi_guid_t *, unsigned long,
595 void *);
596 efi_status_t (__efiapi *flush) (efi_file_protocol_t *);
597 };
598
599 typedef struct efi_simple_file_system_protocol efi_simple_file_system_protocol_t;
600
601 struct efi_simple_file_system_protocol {
602 u64 revision;
603 int (__efiapi *open_volume)(efi_simple_file_system_protocol_t *,
604 efi_file_protocol_t **);
605 };
606
607 #define EFI_FILE_MODE_READ 0x0000000000000001
608 #define EFI_FILE_MODE_WRITE 0x0000000000000002
609 #define EFI_FILE_MODE_CREATE 0x8000000000000000
610
611 typedef enum {
612 EfiPciIoWidthUint8,
613 EfiPciIoWidthUint16,
614 EfiPciIoWidthUint32,
615 EfiPciIoWidthUint64,
616 EfiPciIoWidthFifoUint8,
617 EfiPciIoWidthFifoUint16,
618 EfiPciIoWidthFifoUint32,
619 EfiPciIoWidthFifoUint64,
620 EfiPciIoWidthFillUint8,
621 EfiPciIoWidthFillUint16,
622 EfiPciIoWidthFillUint32,
623 EfiPciIoWidthFillUint64,
624 EfiPciIoWidthMaximum
625 } EFI_PCI_IO_PROTOCOL_WIDTH;
626
627 typedef enum {
628 EfiPciIoAttributeOperationGet,
629 EfiPciIoAttributeOperationSet,
630 EfiPciIoAttributeOperationEnable,
631 EfiPciIoAttributeOperationDisable,
632 EfiPciIoAttributeOperationSupported,
633 EfiPciIoAttributeOperationMaximum
634 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
635
636 typedef struct {
637 u32 read;
638 u32 write;
639 } efi_pci_io_protocol_access_32_t;
640
641 typedef union efi_pci_io_protocol efi_pci_io_protocol_t;
642
643 typedef
644 efi_status_t (__efiapi *efi_pci_io_protocol_cfg_t)(efi_pci_io_protocol_t *,
645 EFI_PCI_IO_PROTOCOL_WIDTH,
646 u32 offset,
647 unsigned long count,
648 void *buffer);
649
650 typedef struct {
651 void *read;
652 void *write;
653 } efi_pci_io_protocol_access_t;
654
655 typedef struct {
656 efi_pci_io_protocol_cfg_t read;
657 efi_pci_io_protocol_cfg_t write;
658 } efi_pci_io_protocol_config_access_t;
659
660 union efi_pci_io_protocol {
661 struct {
662 void *poll_mem;
663 void *poll_io;
664 efi_pci_io_protocol_access_t mem;
665 efi_pci_io_protocol_access_t io;
666 efi_pci_io_protocol_config_access_t pci;
667 void *copy_mem;
668 void *map;
669 void *unmap;
670 void *allocate_buffer;
671 void *free_buffer;
672 void *flush;
673 efi_status_t (__efiapi *get_location)(efi_pci_io_protocol_t *,
674 unsigned long *segment_nr,
675 unsigned long *bus_nr,
676 unsigned long *device_nr,
677 unsigned long *func_nr);
678 void *attributes;
679 void *get_bar_attributes;
680 void *set_bar_attributes;
681 uint64_t romsize;
682 void *romimage;
683 };
684 struct {
685 u32 poll_mem;
686 u32 poll_io;
687 efi_pci_io_protocol_access_32_t mem;
688 efi_pci_io_protocol_access_32_t io;
689 efi_pci_io_protocol_access_32_t pci;
690 u32 copy_mem;
691 u32 map;
692 u32 unmap;
693 u32 allocate_buffer;
694 u32 free_buffer;
695 u32 flush;
696 u32 get_location;
697 u32 attributes;
698 u32 get_bar_attributes;
699 u32 set_bar_attributes;
700 u64 romsize;
701 u32 romimage;
702 } mixed_mode;
703 };
704
705 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
706 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
707 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
708 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
709 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
710 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
711 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
712 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
713 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
714 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
715 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
716 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
717 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
718 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
719 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
720 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
721 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
722 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
723 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
724
725 struct efi_dev_path;
726
727 typedef union apple_properties_protocol apple_properties_protocol_t;
728
729 union apple_properties_protocol {
730 struct {
731 unsigned long version;
732 efi_status_t (__efiapi *get)(apple_properties_protocol_t *,
733 struct efi_dev_path *,
734 efi_char16_t *, void *, u32 *);
735 efi_status_t (__efiapi *set)(apple_properties_protocol_t *,
736 struct efi_dev_path *,
737 efi_char16_t *, void *, u32);
738 efi_status_t (__efiapi *del)(apple_properties_protocol_t *,
739 struct efi_dev_path *,
740 efi_char16_t *);
741 efi_status_t (__efiapi *get_all)(apple_properties_protocol_t *,
742 void *buffer, u32 *);
743 };
744 struct {
745 u32 version;
746 u32 get;
747 u32 set;
748 u32 del;
749 u32 get_all;
750 } mixed_mode;
751 };
752
753 typedef u32 efi_tcg2_event_log_format;
754
755 #define INITRD_EVENT_TAG_ID 0x8F3B22ECU
756 #define LOAD_OPTIONS_EVENT_TAG_ID 0x8F3B22EDU
757 #define EV_EVENT_TAG 0x00000006U
758 #define EFI_TCG2_EVENT_HEADER_VERSION 0x1
759
760 struct efi_tcg2_event {
761 u32 event_size;
762 struct {
763 u32 header_size;
764 u16 header_version;
765 u32 pcr_index;
766 u32 event_type;
767 } __packed event_header;
768 /* u8[] event follows here */
769 } __packed;
770
771 struct efi_tcg2_tagged_event {
772 u32 tagged_event_id;
773 u32 tagged_event_data_size;
774 /* u8 tagged event data follows here */
775 } __packed;
776
777 typedef struct efi_tcg2_event efi_tcg2_event_t;
778 typedef struct efi_tcg2_tagged_event efi_tcg2_tagged_event_t;
779 typedef union efi_tcg2_protocol efi_tcg2_protocol_t;
780
781 union efi_tcg2_protocol {
782 struct {
783 void *get_capability;
784 efi_status_t (__efiapi *get_event_log)(efi_tcg2_protocol_t *,
785 efi_tcg2_event_log_format,
786 efi_physical_addr_t *,
787 efi_physical_addr_t *,
788 efi_bool_t *);
789 efi_status_t (__efiapi *hash_log_extend_event)(efi_tcg2_protocol_t *,
790 u64,
791 efi_physical_addr_t,
792 u64,
793 const efi_tcg2_event_t *);
794 void *submit_command;
795 void *get_active_pcr_banks;
796 void *set_active_pcr_banks;
797 void *get_result_of_set_active_pcr_banks;
798 };
799 struct {
800 u32 get_capability;
801 u32 get_event_log;
802 u32 hash_log_extend_event;
803 u32 submit_command;
804 u32 get_active_pcr_banks;
805 u32 set_active_pcr_banks;
806 u32 get_result_of_set_active_pcr_banks;
807 } mixed_mode;
808 };
809
810 struct riscv_efi_boot_protocol {
811 u64 revision;
812
813 efi_status_t (__efiapi *get_boot_hartid)(struct riscv_efi_boot_protocol *,
814 unsigned long *boot_hartid);
815 };
816
817 typedef union efi_load_file_protocol efi_load_file_protocol_t;
818 typedef union efi_load_file_protocol efi_load_file2_protocol_t;
819
820 union efi_load_file_protocol {
821 struct {
822 efi_status_t (__efiapi *load_file)(efi_load_file_protocol_t *,
823 efi_device_path_protocol_t *,
824 bool, unsigned long *, void *);
825 };
826 struct {
827 u32 load_file;
828 } mixed_mode;
829 };
830
831 typedef struct {
832 u32 attributes;
833 u16 file_path_list_length;
834 u8 variable_data[];
835 // efi_char16_t description[];
836 // efi_device_path_protocol_t file_path_list[];
837 // u8 optional_data[];
838 } __packed efi_load_option_t;
839
840 #define EFI_LOAD_OPTION_ACTIVE 0x0001U
841 #define EFI_LOAD_OPTION_FORCE_RECONNECT 0x0002U
842 #define EFI_LOAD_OPTION_HIDDEN 0x0008U
843 #define EFI_LOAD_OPTION_CATEGORY 0x1f00U
844 #define EFI_LOAD_OPTION_CATEGORY_BOOT 0x0000U
845 #define EFI_LOAD_OPTION_CATEGORY_APP 0x0100U
846
847 #define EFI_LOAD_OPTION_BOOT_MASK \
848 (EFI_LOAD_OPTION_ACTIVE|EFI_LOAD_OPTION_HIDDEN|EFI_LOAD_OPTION_CATEGORY)
849 #define EFI_LOAD_OPTION_MASK (EFI_LOAD_OPTION_FORCE_RECONNECT|EFI_LOAD_OPTION_BOOT_MASK)
850
851 typedef struct {
852 u32 attributes;
853 u16 file_path_list_length;
854 const efi_char16_t *description;
855 const efi_device_path_protocol_t *file_path_list;
856 u32 optional_data_size;
857 const void *optional_data;
858 } efi_load_option_unpacked_t;
859
860 void efi_pci_disable_bridge_busmaster(void);
861
862 typedef efi_status_t (*efi_exit_boot_map_processing)(
863 struct efi_boot_memmap *map,
864 void *priv);
865
866 efi_status_t efi_exit_boot_services(void *handle, void *priv,
867 efi_exit_boot_map_processing priv_func);
868
869 efi_status_t efi_boot_kernel(void *handle, efi_loaded_image_t *image,
870 unsigned long kernel_addr, char *cmdline_ptr);
871
872 void *get_fdt(unsigned long *fdt_size);
873
874 efi_status_t efi_alloc_virtmap(efi_memory_desc_t **virtmap,
875 unsigned long *desc_size, u32 *desc_ver);
876 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size,
877 unsigned long desc_size, efi_memory_desc_t *runtime_map,
878 int *count);
879
880 efi_status_t efi_get_random_bytes(unsigned long size, u8 *out);
881
882 efi_status_t efi_random_alloc(unsigned long size, unsigned long align,
883 unsigned long *addr, unsigned long random_seed);
884
885 efi_status_t efi_random_get_seed(void);
886
887 efi_status_t check_platform_features(void);
888
889 void *get_efi_config_table(efi_guid_t guid);
890
891 /* NOTE: These functions do not print a trailing newline after the string */
892 void efi_char16_puts(efi_char16_t *);
893 void efi_puts(const char *str);
894
895 __printf(1, 2) int efi_printk(char const *fmt, ...);
896
897 void efi_free(unsigned long size, unsigned long addr);
898
899 void efi_apply_loadoptions_quirk(const void **load_options, u32 *load_options_size);
900
901 char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len);
902
903 efi_status_t efi_get_memory_map(struct efi_boot_memmap **map,
904 bool install_cfg_tbl);
905
906 efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr,
907 unsigned long max);
908
909 efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr,
910 unsigned long max, unsigned long align);
911
912 efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align,
913 unsigned long *addr, unsigned long min);
914
915 efi_status_t efi_relocate_kernel(unsigned long *image_addr,
916 unsigned long image_size,
917 unsigned long alloc_size,
918 unsigned long preferred_addr,
919 unsigned long alignment,
920 unsigned long min_addr);
921
922 efi_status_t efi_parse_options(char const *cmdline);
923
924 void efi_parse_option_graphics(char *option);
925
926 efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto,
927 unsigned long size);
928
929 efi_status_t handle_cmdline_files(efi_loaded_image_t *image,
930 const efi_char16_t *optstr,
931 int optstr_size,
932 unsigned long soft_limit,
933 unsigned long hard_limit,
934 unsigned long *load_addr,
935 unsigned long *load_size);
936
937
efi_load_dtb(efi_loaded_image_t * image,unsigned long * load_addr,unsigned long * load_size)938 static inline efi_status_t efi_load_dtb(efi_loaded_image_t *image,
939 unsigned long *load_addr,
940 unsigned long *load_size)
941 {
942 return handle_cmdline_files(image, L"dtb=", sizeof(L"dtb=") - 2,
943 ULONG_MAX, ULONG_MAX, load_addr, load_size);
944 }
945
946 efi_status_t efi_load_initrd(efi_loaded_image_t *image,
947 unsigned long soft_limit,
948 unsigned long hard_limit,
949 const struct linux_efi_initrd **out);
950 /*
951 * This function handles the architcture specific differences between arm and
952 * arm64 regarding where the kernel image must be loaded and any memory that
953 * must be reserved. On failure it is required to free all
954 * all allocations it has made.
955 */
956 efi_status_t handle_kernel_image(unsigned long *image_addr,
957 unsigned long *image_size,
958 unsigned long *reserve_addr,
959 unsigned long *reserve_size,
960 efi_loaded_image_t *image,
961 efi_handle_t image_handle);
962
963 asmlinkage void __noreturn efi_enter_kernel(unsigned long entrypoint,
964 unsigned long fdt_addr,
965 unsigned long fdt_size);
966
967 void efi_handle_post_ebs_state(void);
968
969 enum efi_secureboot_mode efi_get_secureboot(void);
970
971 #ifdef CONFIG_RESET_ATTACK_MITIGATION
972 void efi_enable_reset_attack_mitigation(void);
973 #else
974 static inline void
efi_enable_reset_attack_mitigation(void)975 efi_enable_reset_attack_mitigation(void) { }
976 #endif
977
978 void efi_retrieve_tpm2_eventlog(void);
979
980 struct efi_smbios_record {
981 u8 type;
982 u8 length;
983 u16 handle;
984 };
985
986 struct efi_smbios_type1_record {
987 struct efi_smbios_record header;
988
989 u8 manufacturer;
990 u8 product_name;
991 u8 version;
992 u8 serial_number;
993 efi_guid_t uuid;
994 u8 wakeup_type;
995 u8 sku_number;
996 u8 family;
997 };
998
999 #define efi_get_smbios_string(__type, __name) ({ \
1000 int size = sizeof(struct efi_smbios_type ## __type ## _record); \
1001 int off = offsetof(struct efi_smbios_type ## __type ## _record, \
1002 __name); \
1003 __efi_get_smbios_string(__type, off, size); \
1004 })
1005
1006 const u8 *__efi_get_smbios_string(u8 type, int offset, int recsize);
1007
1008 #endif
1009