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1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_EFI_H
3 #define _LINUX_EFI_H
4
5 /*
6 * Extensible Firmware Interface
7 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
8 *
9 * Copyright (C) 1999 VA Linux Systems
10 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
11 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
12 * David Mosberger-Tang <davidm@hpl.hp.com>
13 * Stephane Eranian <eranian@hpl.hp.com>
14 */
15 #include <linux/init.h>
16 #include <linux/string.h>
17 #include <linux/time.h>
18 #include <linux/types.h>
19 #include <linux/proc_fs.h>
20 #include <linux/rtc.h>
21 #include <linux/ioport.h>
22 #include <linux/pfn.h>
23 #include <linux/pstore.h>
24 #include <linux/range.h>
25 #include <linux/reboot.h>
26 #include <linux/uuid.h>
27 #include <linux/screen_info.h>
28
29 #include <asm/page.h>
30
31 #define EFI_SUCCESS 0
32 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
37 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
38 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
39 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
40 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
41 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
42 #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
43 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
44
45 #define EFI_IS_ERROR(x) ((x) & (1UL << (BITS_PER_LONG-1)))
46
47 typedef unsigned long efi_status_t;
48 typedef u8 efi_bool_t;
49 typedef u16 efi_char16_t; /* UNICODE character */
50 typedef u64 efi_physical_addr_t;
51 typedef void *efi_handle_t;
52
53 /*
54 * The UEFI spec and EDK2 reference implementation both define EFI_GUID as
55 * struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment
56 * is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM),
57 * this means that firmware services invoked by the kernel may assume that
58 * efi_guid_t* arguments are 32-bit aligned, and use memory accessors that
59 * do not tolerate misalignment. So let's set the minimum alignment to 32 bits.
60 *
61 * Note that the UEFI spec as well as some comments in the EDK2 code base
62 * suggest that EFI_GUID should be 64-bit aligned, but this appears to be
63 * a mistake, given that no code seems to exist that actually enforces that
64 * or relies on it.
65 */
66 typedef guid_t efi_guid_t __aligned(__alignof__(u32));
67
68 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
69 GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
70
71 /*
72 * Generic EFI table header
73 */
74 typedef struct {
75 u64 signature;
76 u32 revision;
77 u32 headersize;
78 u32 crc32;
79 u32 reserved;
80 } efi_table_hdr_t;
81
82 /*
83 * Memory map descriptor:
84 */
85
86 /* Memory types: */
87 #define EFI_RESERVED_TYPE 0
88 #define EFI_LOADER_CODE 1
89 #define EFI_LOADER_DATA 2
90 #define EFI_BOOT_SERVICES_CODE 3
91 #define EFI_BOOT_SERVICES_DATA 4
92 #define EFI_RUNTIME_SERVICES_CODE 5
93 #define EFI_RUNTIME_SERVICES_DATA 6
94 #define EFI_CONVENTIONAL_MEMORY 7
95 #define EFI_UNUSABLE_MEMORY 8
96 #define EFI_ACPI_RECLAIM_MEMORY 9
97 #define EFI_ACPI_MEMORY_NVS 10
98 #define EFI_MEMORY_MAPPED_IO 11
99 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
100 #define EFI_PAL_CODE 13
101 #define EFI_PERSISTENT_MEMORY 14
102 #define EFI_MAX_MEMORY_TYPE 15
103
104 /* Attribute values: */
105 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
106 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
107 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
108 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
109 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
110 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
111 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
112 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
113 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
114 #define EFI_MEMORY_MORE_RELIABLE \
115 ((u64)0x0000000000010000ULL) /* higher reliability */
116 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
117 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
118 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
119
120 #define EFI_PAGE_SHIFT 12
121 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
122 #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
123
124 typedef struct {
125 u32 type;
126 u32 pad;
127 u64 phys_addr;
128 u64 virt_addr;
129 u64 num_pages;
130 u64 attribute;
131 } efi_memory_desc_t;
132
133 typedef struct {
134 efi_guid_t guid;
135 u32 headersize;
136 u32 flags;
137 u32 imagesize;
138 } efi_capsule_header_t;
139
140 struct efi_boot_memmap {
141 efi_memory_desc_t **map;
142 unsigned long *map_size;
143 unsigned long *desc_size;
144 u32 *desc_ver;
145 unsigned long *key_ptr;
146 unsigned long *buff_size;
147 };
148
149 /*
150 * EFI capsule flags
151 */
152 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
153 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
154 #define EFI_CAPSULE_INITIATE_RESET 0x00040000
155
156 struct capsule_info {
157 efi_capsule_header_t header;
158 efi_capsule_header_t *capsule;
159 int reset_type;
160 long index;
161 size_t count;
162 size_t total_size;
163 struct page **pages;
164 phys_addr_t *phys;
165 size_t page_bytes_remain;
166 };
167
168 int __efi_capsule_setup_info(struct capsule_info *cap_info);
169
170 /*
171 * Allocation types for calls to boottime->allocate_pages.
172 */
173 #define EFI_ALLOCATE_ANY_PAGES 0
174 #define EFI_ALLOCATE_MAX_ADDRESS 1
175 #define EFI_ALLOCATE_ADDRESS 2
176 #define EFI_MAX_ALLOCATE_TYPE 3
177
178 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
179
180 /*
181 * Types and defines for Time Services
182 */
183 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
184 #define EFI_TIME_IN_DAYLIGHT 0x2
185 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
186
187 typedef struct {
188 u16 year;
189 u8 month;
190 u8 day;
191 u8 hour;
192 u8 minute;
193 u8 second;
194 u8 pad1;
195 u32 nanosecond;
196 s16 timezone;
197 u8 daylight;
198 u8 pad2;
199 } efi_time_t;
200
201 typedef struct {
202 u32 resolution;
203 u32 accuracy;
204 u8 sets_to_zero;
205 } efi_time_cap_t;
206
207 typedef struct {
208 efi_table_hdr_t hdr;
209 u32 raise_tpl;
210 u32 restore_tpl;
211 u32 allocate_pages;
212 u32 free_pages;
213 u32 get_memory_map;
214 u32 allocate_pool;
215 u32 free_pool;
216 u32 create_event;
217 u32 set_timer;
218 u32 wait_for_event;
219 u32 signal_event;
220 u32 close_event;
221 u32 check_event;
222 u32 install_protocol_interface;
223 u32 reinstall_protocol_interface;
224 u32 uninstall_protocol_interface;
225 u32 handle_protocol;
226 u32 __reserved;
227 u32 register_protocol_notify;
228 u32 locate_handle;
229 u32 locate_device_path;
230 u32 install_configuration_table;
231 u32 load_image;
232 u32 start_image;
233 u32 exit;
234 u32 unload_image;
235 u32 exit_boot_services;
236 u32 get_next_monotonic_count;
237 u32 stall;
238 u32 set_watchdog_timer;
239 u32 connect_controller;
240 u32 disconnect_controller;
241 u32 open_protocol;
242 u32 close_protocol;
243 u32 open_protocol_information;
244 u32 protocols_per_handle;
245 u32 locate_handle_buffer;
246 u32 locate_protocol;
247 u32 install_multiple_protocol_interfaces;
248 u32 uninstall_multiple_protocol_interfaces;
249 u32 calculate_crc32;
250 u32 copy_mem;
251 u32 set_mem;
252 u32 create_event_ex;
253 } __packed efi_boot_services_32_t;
254
255 typedef struct {
256 efi_table_hdr_t hdr;
257 u64 raise_tpl;
258 u64 restore_tpl;
259 u64 allocate_pages;
260 u64 free_pages;
261 u64 get_memory_map;
262 u64 allocate_pool;
263 u64 free_pool;
264 u64 create_event;
265 u64 set_timer;
266 u64 wait_for_event;
267 u64 signal_event;
268 u64 close_event;
269 u64 check_event;
270 u64 install_protocol_interface;
271 u64 reinstall_protocol_interface;
272 u64 uninstall_protocol_interface;
273 u64 handle_protocol;
274 u64 __reserved;
275 u64 register_protocol_notify;
276 u64 locate_handle;
277 u64 locate_device_path;
278 u64 install_configuration_table;
279 u64 load_image;
280 u64 start_image;
281 u64 exit;
282 u64 unload_image;
283 u64 exit_boot_services;
284 u64 get_next_monotonic_count;
285 u64 stall;
286 u64 set_watchdog_timer;
287 u64 connect_controller;
288 u64 disconnect_controller;
289 u64 open_protocol;
290 u64 close_protocol;
291 u64 open_protocol_information;
292 u64 protocols_per_handle;
293 u64 locate_handle_buffer;
294 u64 locate_protocol;
295 u64 install_multiple_protocol_interfaces;
296 u64 uninstall_multiple_protocol_interfaces;
297 u64 calculate_crc32;
298 u64 copy_mem;
299 u64 set_mem;
300 u64 create_event_ex;
301 } __packed efi_boot_services_64_t;
302
303 /*
304 * EFI Boot Services table
305 */
306 typedef struct {
307 efi_table_hdr_t hdr;
308 void *raise_tpl;
309 void *restore_tpl;
310 efi_status_t (*allocate_pages)(int, int, unsigned long,
311 efi_physical_addr_t *);
312 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
313 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
314 unsigned long *, u32 *);
315 efi_status_t (*allocate_pool)(int, unsigned long, void **);
316 efi_status_t (*free_pool)(void *);
317 void *create_event;
318 void *set_timer;
319 void *wait_for_event;
320 void *signal_event;
321 void *close_event;
322 void *check_event;
323 void *install_protocol_interface;
324 void *reinstall_protocol_interface;
325 void *uninstall_protocol_interface;
326 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
327 void *__reserved;
328 void *register_protocol_notify;
329 efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
330 unsigned long *, efi_handle_t *);
331 void *locate_device_path;
332 efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
333 void *load_image;
334 void *start_image;
335 void *exit;
336 void *unload_image;
337 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
338 void *get_next_monotonic_count;
339 void *stall;
340 void *set_watchdog_timer;
341 void *connect_controller;
342 void *disconnect_controller;
343 void *open_protocol;
344 void *close_protocol;
345 void *open_protocol_information;
346 void *protocols_per_handle;
347 void *locate_handle_buffer;
348 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
349 void *install_multiple_protocol_interfaces;
350 void *uninstall_multiple_protocol_interfaces;
351 void *calculate_crc32;
352 void *copy_mem;
353 void *set_mem;
354 void *create_event_ex;
355 } efi_boot_services_t;
356
357 typedef enum {
358 EfiPciIoWidthUint8,
359 EfiPciIoWidthUint16,
360 EfiPciIoWidthUint32,
361 EfiPciIoWidthUint64,
362 EfiPciIoWidthFifoUint8,
363 EfiPciIoWidthFifoUint16,
364 EfiPciIoWidthFifoUint32,
365 EfiPciIoWidthFifoUint64,
366 EfiPciIoWidthFillUint8,
367 EfiPciIoWidthFillUint16,
368 EfiPciIoWidthFillUint32,
369 EfiPciIoWidthFillUint64,
370 EfiPciIoWidthMaximum
371 } EFI_PCI_IO_PROTOCOL_WIDTH;
372
373 typedef enum {
374 EfiPciIoAttributeOperationGet,
375 EfiPciIoAttributeOperationSet,
376 EfiPciIoAttributeOperationEnable,
377 EfiPciIoAttributeOperationDisable,
378 EfiPciIoAttributeOperationSupported,
379 EfiPciIoAttributeOperationMaximum
380 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
381
382 typedef struct {
383 u32 read;
384 u32 write;
385 } efi_pci_io_protocol_access_32_t;
386
387 typedef struct {
388 u64 read;
389 u64 write;
390 } efi_pci_io_protocol_access_64_t;
391
392 typedef struct {
393 void *read;
394 void *write;
395 } efi_pci_io_protocol_access_t;
396
397 typedef struct {
398 u32 poll_mem;
399 u32 poll_io;
400 efi_pci_io_protocol_access_32_t mem;
401 efi_pci_io_protocol_access_32_t io;
402 efi_pci_io_protocol_access_32_t pci;
403 u32 copy_mem;
404 u32 map;
405 u32 unmap;
406 u32 allocate_buffer;
407 u32 free_buffer;
408 u32 flush;
409 u32 get_location;
410 u32 attributes;
411 u32 get_bar_attributes;
412 u32 set_bar_attributes;
413 u64 romsize;
414 u32 romimage;
415 } efi_pci_io_protocol_32_t;
416
417 typedef struct {
418 u64 poll_mem;
419 u64 poll_io;
420 efi_pci_io_protocol_access_64_t mem;
421 efi_pci_io_protocol_access_64_t io;
422 efi_pci_io_protocol_access_64_t pci;
423 u64 copy_mem;
424 u64 map;
425 u64 unmap;
426 u64 allocate_buffer;
427 u64 free_buffer;
428 u64 flush;
429 u64 get_location;
430 u64 attributes;
431 u64 get_bar_attributes;
432 u64 set_bar_attributes;
433 u64 romsize;
434 u64 romimage;
435 } efi_pci_io_protocol_64_t;
436
437 typedef struct {
438 void *poll_mem;
439 void *poll_io;
440 efi_pci_io_protocol_access_t mem;
441 efi_pci_io_protocol_access_t io;
442 efi_pci_io_protocol_access_t pci;
443 void *copy_mem;
444 void *map;
445 void *unmap;
446 void *allocate_buffer;
447 void *free_buffer;
448 void *flush;
449 void *get_location;
450 void *attributes;
451 void *get_bar_attributes;
452 void *set_bar_attributes;
453 uint64_t romsize;
454 void *romimage;
455 } efi_pci_io_protocol_t;
456
457 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
458 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
459 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
460 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
461 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
462 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
463 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
464 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
465 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
466 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
467 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
468 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
469 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
470 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
471 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
472 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
473 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
474 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
475 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
476
477 typedef struct {
478 u32 version;
479 u32 get;
480 u32 set;
481 u32 del;
482 u32 get_all;
483 } apple_properties_protocol_32_t;
484
485 typedef struct {
486 u64 version;
487 u64 get;
488 u64 set;
489 u64 del;
490 u64 get_all;
491 } apple_properties_protocol_64_t;
492
493 typedef struct {
494 u32 get_capability;
495 u32 get_event_log;
496 u32 hash_log_extend_event;
497 u32 submit_command;
498 u32 get_active_pcr_banks;
499 u32 set_active_pcr_banks;
500 u32 get_result_of_set_active_pcr_banks;
501 } efi_tcg2_protocol_32_t;
502
503 typedef struct {
504 u64 get_capability;
505 u64 get_event_log;
506 u64 hash_log_extend_event;
507 u64 submit_command;
508 u64 get_active_pcr_banks;
509 u64 set_active_pcr_banks;
510 u64 get_result_of_set_active_pcr_banks;
511 } efi_tcg2_protocol_64_t;
512
513 typedef u32 efi_tcg2_event_log_format;
514
515 typedef struct {
516 void *get_capability;
517 efi_status_t (*get_event_log)(efi_handle_t, efi_tcg2_event_log_format,
518 efi_physical_addr_t *, efi_physical_addr_t *, efi_bool_t *);
519 void *hash_log_extend_event;
520 void *submit_command;
521 void *get_active_pcr_banks;
522 void *set_active_pcr_banks;
523 void *get_result_of_set_active_pcr_banks;
524 } efi_tcg2_protocol_t;
525
526 /*
527 * Types and defines for EFI ResetSystem
528 */
529 #define EFI_RESET_COLD 0
530 #define EFI_RESET_WARM 1
531 #define EFI_RESET_SHUTDOWN 2
532
533 /*
534 * EFI Runtime Services table
535 */
536 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
537 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
538
539 typedef struct {
540 efi_table_hdr_t hdr;
541 u32 get_time;
542 u32 set_time;
543 u32 get_wakeup_time;
544 u32 set_wakeup_time;
545 u32 set_virtual_address_map;
546 u32 convert_pointer;
547 u32 get_variable;
548 u32 get_next_variable;
549 u32 set_variable;
550 u32 get_next_high_mono_count;
551 u32 reset_system;
552 u32 update_capsule;
553 u32 query_capsule_caps;
554 u32 query_variable_info;
555 } efi_runtime_services_32_t;
556
557 typedef struct {
558 efi_table_hdr_t hdr;
559 u64 get_time;
560 u64 set_time;
561 u64 get_wakeup_time;
562 u64 set_wakeup_time;
563 u64 set_virtual_address_map;
564 u64 convert_pointer;
565 u64 get_variable;
566 u64 get_next_variable;
567 u64 set_variable;
568 u64 get_next_high_mono_count;
569 u64 reset_system;
570 u64 update_capsule;
571 u64 query_capsule_caps;
572 u64 query_variable_info;
573 } efi_runtime_services_64_t;
574
575 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
576 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
577 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
578 efi_time_t *tm);
579 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
580 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
581 unsigned long *data_size, void *data);
582 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
583 efi_guid_t *vendor);
584 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
585 u32 attr, unsigned long data_size,
586 void *data);
587 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
588 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
589 unsigned long data_size, efi_char16_t *data);
590 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
591 unsigned long descriptor_size,
592 u32 descriptor_version,
593 efi_memory_desc_t *virtual_map);
594 typedef efi_status_t efi_query_variable_info_t(u32 attr,
595 u64 *storage_space,
596 u64 *remaining_space,
597 u64 *max_variable_size);
598 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
599 unsigned long count,
600 unsigned long sg_list);
601 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
602 unsigned long count,
603 u64 *max_size,
604 int *reset_type);
605 typedef efi_status_t efi_query_variable_store_t(u32 attributes,
606 unsigned long size,
607 bool nonblocking);
608
609 typedef struct {
610 efi_table_hdr_t hdr;
611 efi_get_time_t *get_time;
612 efi_set_time_t *set_time;
613 efi_get_wakeup_time_t *get_wakeup_time;
614 efi_set_wakeup_time_t *set_wakeup_time;
615 efi_set_virtual_address_map_t *set_virtual_address_map;
616 void *convert_pointer;
617 efi_get_variable_t *get_variable;
618 efi_get_next_variable_t *get_next_variable;
619 efi_set_variable_t *set_variable;
620 efi_get_next_high_mono_count_t *get_next_high_mono_count;
621 efi_reset_system_t *reset_system;
622 efi_update_capsule_t *update_capsule;
623 efi_query_capsule_caps_t *query_capsule_caps;
624 efi_query_variable_info_t *query_variable_info;
625 } efi_runtime_services_t;
626
627 void efi_native_runtime_setup(void);
628
629 /*
630 * EFI Configuration Table and GUID definitions
631 *
632 * These are all defined in a single line to make them easier to
633 * grep for and to see them at a glance - while still having a
634 * similar structure to the definitions in the spec.
635 *
636 * Here's how they are structured:
637 *
638 * GUID: 12345678-1234-1234-1234-123456789012
639 * Spec:
640 * #define EFI_SOME_PROTOCOL_GUID \
641 * {0x12345678,0x1234,0x1234,\
642 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
643 * Here:
644 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
645 * ^ tabs ^extra space
646 *
647 * Note that the 'extra space' separates the values at the same place
648 * where the UEFI SPEC breaks the line.
649 */
650 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
651 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
652 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
653 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
654 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
655 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
656 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
657 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
658 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
659 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
660 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
661 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
662 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
663 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
664 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
665 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
666 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
667 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
668 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
669 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
670 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
671 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
672 #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
673 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
674 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
675 #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
676 #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f)
677
678 #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
679 #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
680
681 #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
682 #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
683 #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
684
685 /*
686 * This GUID is used to pass to the kernel proper the struct screen_info
687 * structure that was populated by the stub based on the GOP protocol instance
688 * associated with ConOut
689 */
690 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
691 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
692 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
693 #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa)
694 #define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25)
695 #define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2)
696
697 typedef struct {
698 efi_guid_t guid;
699 u64 table;
700 } efi_config_table_64_t;
701
702 typedef struct {
703 efi_guid_t guid;
704 u32 table;
705 } efi_config_table_32_t;
706
707 typedef struct {
708 efi_guid_t guid;
709 unsigned long table;
710 } efi_config_table_t;
711
712 typedef struct {
713 efi_guid_t guid;
714 const char *name;
715 unsigned long *ptr;
716 } efi_config_table_type_t;
717
718 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
719
720 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
721 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
722 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
723 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
724 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
725 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
726
727 typedef struct {
728 efi_table_hdr_t hdr;
729 u64 fw_vendor; /* physical addr of CHAR16 vendor string */
730 u32 fw_revision;
731 u32 __pad1;
732 u64 con_in_handle;
733 u64 con_in;
734 u64 con_out_handle;
735 u64 con_out;
736 u64 stderr_handle;
737 u64 stderr;
738 u64 runtime;
739 u64 boottime;
740 u32 nr_tables;
741 u32 __pad2;
742 u64 tables;
743 } efi_system_table_64_t;
744
745 typedef struct {
746 efi_table_hdr_t hdr;
747 u32 fw_vendor; /* physical addr of CHAR16 vendor string */
748 u32 fw_revision;
749 u32 con_in_handle;
750 u32 con_in;
751 u32 con_out_handle;
752 u32 con_out;
753 u32 stderr_handle;
754 u32 stderr;
755 u32 runtime;
756 u32 boottime;
757 u32 nr_tables;
758 u32 tables;
759 } efi_system_table_32_t;
760
761 typedef struct {
762 efi_table_hdr_t hdr;
763 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
764 u32 fw_revision;
765 unsigned long con_in_handle;
766 unsigned long con_in;
767 unsigned long con_out_handle;
768 unsigned long con_out;
769 unsigned long stderr_handle;
770 unsigned long stderr;
771 efi_runtime_services_t *runtime;
772 efi_boot_services_t *boottime;
773 unsigned long nr_tables;
774 unsigned long tables;
775 } efi_system_table_t;
776
777 /*
778 * Architecture independent structure for describing a memory map for the
779 * benefit of efi_memmap_init_early(), saving us the need to pass four
780 * parameters.
781 */
782 struct efi_memory_map_data {
783 phys_addr_t phys_map;
784 unsigned long size;
785 unsigned long desc_version;
786 unsigned long desc_size;
787 };
788
789 struct efi_memory_map {
790 phys_addr_t phys_map;
791 void *map;
792 void *map_end;
793 int nr_map;
794 unsigned long desc_version;
795 unsigned long desc_size;
796 bool late;
797 };
798
799 struct efi_mem_range {
800 struct range range;
801 u64 attribute;
802 };
803
804 struct efi_fdt_params {
805 u64 system_table;
806 u64 mmap;
807 u32 mmap_size;
808 u32 desc_size;
809 u32 desc_ver;
810 };
811
812 typedef struct {
813 u32 revision;
814 u32 parent_handle;
815 u32 system_table;
816 u32 device_handle;
817 u32 file_path;
818 u32 reserved;
819 u32 load_options_size;
820 u32 load_options;
821 u32 image_base;
822 __aligned_u64 image_size;
823 unsigned int image_code_type;
824 unsigned int image_data_type;
825 unsigned long unload;
826 } efi_loaded_image_32_t;
827
828 typedef struct {
829 u32 revision;
830 u64 parent_handle;
831 u64 system_table;
832 u64 device_handle;
833 u64 file_path;
834 u64 reserved;
835 u32 load_options_size;
836 u64 load_options;
837 u64 image_base;
838 __aligned_u64 image_size;
839 unsigned int image_code_type;
840 unsigned int image_data_type;
841 unsigned long unload;
842 } efi_loaded_image_64_t;
843
844 typedef struct {
845 u32 revision;
846 void *parent_handle;
847 efi_system_table_t *system_table;
848 void *device_handle;
849 void *file_path;
850 void *reserved;
851 u32 load_options_size;
852 void *load_options;
853 void *image_base;
854 __aligned_u64 image_size;
855 unsigned int image_code_type;
856 unsigned int image_data_type;
857 unsigned long unload;
858 } efi_loaded_image_t;
859
860
861 typedef struct {
862 u64 size;
863 u64 file_size;
864 u64 phys_size;
865 efi_time_t create_time;
866 efi_time_t last_access_time;
867 efi_time_t modification_time;
868 __aligned_u64 attribute;
869 efi_char16_t filename[1];
870 } efi_file_info_t;
871
872 typedef struct {
873 u64 revision;
874 u32 open;
875 u32 close;
876 u32 delete;
877 u32 read;
878 u32 write;
879 u32 get_position;
880 u32 set_position;
881 u32 get_info;
882 u32 set_info;
883 u32 flush;
884 } efi_file_handle_32_t;
885
886 typedef struct {
887 u64 revision;
888 u64 open;
889 u64 close;
890 u64 delete;
891 u64 read;
892 u64 write;
893 u64 get_position;
894 u64 set_position;
895 u64 get_info;
896 u64 set_info;
897 u64 flush;
898 } efi_file_handle_64_t;
899
900 typedef struct _efi_file_handle {
901 u64 revision;
902 efi_status_t (*open)(struct _efi_file_handle *,
903 struct _efi_file_handle **,
904 efi_char16_t *, u64, u64);
905 efi_status_t (*close)(struct _efi_file_handle *);
906 void *delete;
907 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
908 void *);
909 void *write;
910 void *get_position;
911 void *set_position;
912 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
913 unsigned long *, void *);
914 void *set_info;
915 void *flush;
916 } efi_file_handle_t;
917
918 typedef struct {
919 u64 revision;
920 u32 open_volume;
921 } efi_file_io_interface_32_t;
922
923 typedef struct {
924 u64 revision;
925 u64 open_volume;
926 } efi_file_io_interface_64_t;
927
928 typedef struct _efi_file_io_interface {
929 u64 revision;
930 int (*open_volume)(struct _efi_file_io_interface *,
931 efi_file_handle_t **);
932 } efi_file_io_interface_t;
933
934 #define EFI_FILE_MODE_READ 0x0000000000000001
935 #define EFI_FILE_MODE_WRITE 0x0000000000000002
936 #define EFI_FILE_MODE_CREATE 0x8000000000000000
937
938 typedef struct {
939 u32 version;
940 u32 length;
941 u64 memory_protection_attribute;
942 } efi_properties_table_t;
943
944 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000
945 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
946
947 #define EFI_INVALID_TABLE_ADDR (~0UL)
948
949 typedef struct {
950 u32 version;
951 u32 num_entries;
952 u32 desc_size;
953 u32 reserved;
954 efi_memory_desc_t entry[0];
955 } efi_memory_attributes_table_t;
956
957 typedef struct {
958 efi_guid_t signature_owner;
959 u8 signature_data[];
960 } efi_signature_data_t;
961
962 typedef struct {
963 efi_guid_t signature_type;
964 u32 signature_list_size;
965 u32 signature_header_size;
966 u32 signature_size;
967 u8 signature_header[];
968 /* efi_signature_data_t signatures[][] */
969 } efi_signature_list_t;
970
971 typedef u8 efi_sha256_hash_t[32];
972
973 typedef struct {
974 efi_sha256_hash_t to_be_signed_hash;
975 efi_time_t time_of_revocation;
976 } efi_cert_x509_sha256_t;
977
978 /*
979 * All runtime access to EFI goes through this structure:
980 */
981 extern struct efi {
982 efi_system_table_t *systab; /* EFI system table */
983 unsigned int runtime_version; /* Runtime services version */
984 unsigned long mps; /* MPS table */
985 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
986 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
987 unsigned long smbios; /* SMBIOS table (32 bit entry point) */
988 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
989 unsigned long sal_systab; /* SAL system table */
990 unsigned long boot_info; /* boot info table */
991 unsigned long hcdp; /* HCDP table */
992 unsigned long uga; /* UGA table */
993 unsigned long uv_systab; /* UV system table */
994 unsigned long fw_vendor; /* fw_vendor */
995 unsigned long runtime; /* runtime table */
996 unsigned long config_table; /* config tables */
997 unsigned long esrt; /* ESRT table */
998 unsigned long properties_table; /* properties table */
999 unsigned long mem_attr_table; /* memory attributes table */
1000 unsigned long rng_seed; /* UEFI firmware random seed */
1001 unsigned long tpm_log; /* TPM2 Event Log table */
1002 unsigned long tpm_final_log; /* TPM2 Final Events Log table */
1003 unsigned long mem_reserve; /* Linux EFI memreserve table */
1004 efi_get_time_t *get_time;
1005 efi_set_time_t *set_time;
1006 efi_get_wakeup_time_t *get_wakeup_time;
1007 efi_set_wakeup_time_t *set_wakeup_time;
1008 efi_get_variable_t *get_variable;
1009 efi_get_next_variable_t *get_next_variable;
1010 efi_set_variable_t *set_variable;
1011 efi_set_variable_t *set_variable_nonblocking;
1012 efi_query_variable_info_t *query_variable_info;
1013 efi_query_variable_info_t *query_variable_info_nonblocking;
1014 efi_update_capsule_t *update_capsule;
1015 efi_query_capsule_caps_t *query_capsule_caps;
1016 efi_get_next_high_mono_count_t *get_next_high_mono_count;
1017 efi_reset_system_t *reset_system;
1018 efi_set_virtual_address_map_t *set_virtual_address_map;
1019 struct efi_memory_map memmap;
1020 unsigned long flags;
1021 } efi;
1022
1023 extern struct mm_struct efi_mm;
1024
1025 static inline int
1026 efi_guidcmp (efi_guid_t left, efi_guid_t right)
1027 {
1028 return memcmp(&left, &right, sizeof (efi_guid_t));
1029 }
1030
1031 static inline char *
1032 efi_guid_to_str(efi_guid_t *guid, char *out)
1033 {
1034 sprintf(out, "%pUl", guid->b);
1035 return out;
1036 }
1037
1038 extern void efi_init (void);
1039 extern void *efi_get_pal_addr (void);
1040 extern void efi_map_pal_code (void);
1041 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
1042 extern void efi_gettimeofday (struct timespec64 *ts);
1043 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
1044 #ifdef CONFIG_X86
1045 extern efi_status_t efi_query_variable_store(u32 attributes,
1046 unsigned long size,
1047 bool nonblocking);
1048 extern void efi_find_mirror(void);
1049 #else
1050
1051 static inline efi_status_t efi_query_variable_store(u32 attributes,
1052 unsigned long size,
1053 bool nonblocking)
1054 {
1055 return EFI_SUCCESS;
1056 }
1057 #endif
1058 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
1059
1060 extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries);
1061 extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
1062 extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
1063 extern void __init efi_memmap_unmap(void);
1064 extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map);
1065 extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
1066 struct range *range);
1067 extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
1068 void *buf, struct efi_mem_range *mem);
1069
1070 extern int efi_config_init(efi_config_table_type_t *arch_tables);
1071 #ifdef CONFIG_EFI_ESRT
1072 extern void __init efi_esrt_init(void);
1073 #else
1074 static inline void efi_esrt_init(void) { }
1075 #endif
1076 extern int efi_config_parse_tables(void *config_tables, int count, int sz,
1077 efi_config_table_type_t *arch_tables);
1078 extern u64 efi_get_iobase (void);
1079 extern int efi_mem_type(unsigned long phys_addr);
1080 extern u64 efi_mem_attributes (unsigned long phys_addr);
1081 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
1082 extern int __init efi_uart_console_only (void);
1083 extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
1084 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
1085 extern void efi_mem_reserve(phys_addr_t addr, u64 size);
1086 extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size);
1087 extern void efi_initialize_iomem_resources(struct resource *code_resource,
1088 struct resource *data_resource, struct resource *bss_resource);
1089 extern int efi_get_fdt_params(struct efi_fdt_params *params);
1090 extern struct kobject *efi_kobj;
1091
1092 extern int efi_reboot_quirk_mode;
1093 extern bool efi_poweroff_required(void);
1094
1095 #ifdef CONFIG_EFI_FAKE_MEMMAP
1096 extern void __init efi_fake_memmap(void);
1097 #else
1098 static inline void efi_fake_memmap(void) { }
1099 #endif
1100
1101 /*
1102 * efi_memattr_perm_setter - arch specific callback function passed into
1103 * efi_memattr_apply_permissions() that updates the
1104 * mapping permissions described by the second
1105 * argument in the page tables referred to by the
1106 * first argument.
1107 */
1108 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
1109
1110 extern int efi_memattr_init(void);
1111 extern int efi_memattr_apply_permissions(struct mm_struct *mm,
1112 efi_memattr_perm_setter fn);
1113
1114 /*
1115 * efi_early_memdesc_ptr - get the n-th EFI memmap descriptor
1116 * @map: the start of efi memmap
1117 * @desc_size: the size of space for each EFI memmap descriptor
1118 * @n: the index of efi memmap descriptor
1119 *
1120 * EFI boot service provides the GetMemoryMap() function to get a copy of the
1121 * current memory map which is an array of memory descriptors, each of
1122 * which describes a contiguous block of memory. It also gets the size of the
1123 * map, and the size of each descriptor, etc.
1124 *
1125 * Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of
1126 * each descriptor might not be equal to sizeof(efi_memory_memdesc_t),
1127 * since efi_memory_memdesc_t may be extended in the future. Thus the OS
1128 * MUST use the returned size of the descriptor to find the start of each
1129 * efi_memory_memdesc_t in the memory map array. This should only be used
1130 * during bootup since for_each_efi_memory_desc_xxx() is available after the
1131 * kernel initializes the EFI subsystem to set up struct efi_memory_map.
1132 */
1133 #define efi_early_memdesc_ptr(map, desc_size, n) \
1134 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size)))
1135
1136 /* Iterate through an efi_memory_map */
1137 #define for_each_efi_memory_desc_in_map(m, md) \
1138 for ((md) = (m)->map; \
1139 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
1140 (md) = (void *)(md) + (m)->desc_size)
1141
1142 /**
1143 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1144 * @md: the efi_memory_desc_t * iterator
1145 *
1146 * Once the loop finishes @md must not be accessed.
1147 */
1148 #define for_each_efi_memory_desc(md) \
1149 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1150
1151 /*
1152 * Format an EFI memory descriptor's type and attributes to a user-provided
1153 * character buffer, as per snprintf(), and return the buffer.
1154 */
1155 char * __init efi_md_typeattr_format(char *buf, size_t size,
1156 const efi_memory_desc_t *md);
1157
1158
1159 typedef void (*efi_element_handler_t)(const char *source,
1160 const void *element_data,
1161 size_t element_size);
1162 extern int __init parse_efi_signature_list(
1163 const char *source,
1164 const void *data, size_t size,
1165 efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *));
1166
1167 /**
1168 * efi_range_is_wc - check the WC bit on an address range
1169 * @start: starting kvirt address
1170 * @len: length of range
1171 *
1172 * Consult the EFI memory map and make sure it's ok to set this range WC.
1173 * Returns true or false.
1174 */
1175 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
1176 {
1177 unsigned long i;
1178
1179 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
1180 unsigned long paddr = __pa(start + i);
1181 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
1182 return 0;
1183 }
1184 /* The range checked out */
1185 return 1;
1186 }
1187
1188 #ifdef CONFIG_EFI_PCDP
1189 extern int __init efi_setup_pcdp_console(char *);
1190 #endif
1191
1192 /*
1193 * We play games with efi_enabled so that the compiler will, if
1194 * possible, remove EFI-related code altogether.
1195 */
1196 #define EFI_BOOT 0 /* Were we booted from EFI? */
1197 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1198 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1199 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1200 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
1201 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1202 #define EFI_ARCH_1 7 /* First arch-specific bit */
1203 #define EFI_DBG 8 /* Print additional debug info at runtime */
1204 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1205 #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
1206
1207 #ifdef CONFIG_EFI
1208 /*
1209 * Test whether the above EFI_* bits are enabled.
1210 */
1211 static inline bool efi_enabled(int feature)
1212 {
1213 return test_bit(feature, &efi.flags) != 0;
1214 }
1215 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
1216
1217 extern bool efi_is_table_address(unsigned long phys_addr);
1218 #else
1219 static inline bool efi_enabled(int feature)
1220 {
1221 return false;
1222 }
1223 static inline void
1224 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
1225
1226 static inline bool
1227 efi_capsule_pending(int *reset_type)
1228 {
1229 return false;
1230 }
1231
1232 static inline bool efi_is_table_address(unsigned long phys_addr)
1233 {
1234 return false;
1235 }
1236 #endif
1237
1238 extern int efi_status_to_err(efi_status_t status);
1239 extern const char *efi_status_to_str(efi_status_t status);
1240
1241 /*
1242 * Variable Attributes
1243 */
1244 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1245 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1246 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1247 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1248 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1249 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1250 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1251
1252 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1253 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1254 EFI_VARIABLE_RUNTIME_ACCESS | \
1255 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1256 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1257 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1258 EFI_VARIABLE_APPEND_WRITE)
1259 /*
1260 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1261 * not including trailing NUL
1262 */
1263 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1264
1265 /*
1266 * The type of search to perform when calling boottime->locate_handle
1267 */
1268 #define EFI_LOCATE_ALL_HANDLES 0
1269 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1270 #define EFI_LOCATE_BY_PROTOCOL 2
1271
1272 /*
1273 * EFI Device Path information
1274 */
1275 #define EFI_DEV_HW 0x01
1276 #define EFI_DEV_PCI 1
1277 #define EFI_DEV_PCCARD 2
1278 #define EFI_DEV_MEM_MAPPED 3
1279 #define EFI_DEV_VENDOR 4
1280 #define EFI_DEV_CONTROLLER 5
1281 #define EFI_DEV_ACPI 0x02
1282 #define EFI_DEV_BASIC_ACPI 1
1283 #define EFI_DEV_EXPANDED_ACPI 2
1284 #define EFI_DEV_MSG 0x03
1285 #define EFI_DEV_MSG_ATAPI 1
1286 #define EFI_DEV_MSG_SCSI 2
1287 #define EFI_DEV_MSG_FC 3
1288 #define EFI_DEV_MSG_1394 4
1289 #define EFI_DEV_MSG_USB 5
1290 #define EFI_DEV_MSG_USB_CLASS 15
1291 #define EFI_DEV_MSG_I20 6
1292 #define EFI_DEV_MSG_MAC 11
1293 #define EFI_DEV_MSG_IPV4 12
1294 #define EFI_DEV_MSG_IPV6 13
1295 #define EFI_DEV_MSG_INFINIBAND 9
1296 #define EFI_DEV_MSG_UART 14
1297 #define EFI_DEV_MSG_VENDOR 10
1298 #define EFI_DEV_MEDIA 0x04
1299 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1300 #define EFI_DEV_MEDIA_CDROM 2
1301 #define EFI_DEV_MEDIA_VENDOR 3
1302 #define EFI_DEV_MEDIA_FILE 4
1303 #define EFI_DEV_MEDIA_PROTOCOL 5
1304 #define EFI_DEV_BIOS_BOOT 0x05
1305 #define EFI_DEV_END_PATH 0x7F
1306 #define EFI_DEV_END_PATH2 0xFF
1307 #define EFI_DEV_END_INSTANCE 0x01
1308 #define EFI_DEV_END_ENTIRE 0xFF
1309
1310 struct efi_generic_dev_path {
1311 u8 type;
1312 u8 sub_type;
1313 u16 length;
1314 } __attribute ((packed));
1315
1316 struct efi_dev_path {
1317 u8 type; /* can be replaced with unnamed */
1318 u8 sub_type; /* struct efi_generic_dev_path; */
1319 u16 length; /* once we've moved to -std=c11 */
1320 union {
1321 struct {
1322 u32 hid;
1323 u32 uid;
1324 } acpi;
1325 struct {
1326 u8 fn;
1327 u8 dev;
1328 } pci;
1329 };
1330 } __attribute ((packed));
1331
1332 #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER)
1333 struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len);
1334 #endif
1335
1336 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1337 {
1338 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1339 *addr &= PAGE_MASK;
1340 }
1341
1342 /*
1343 * EFI Variable support.
1344 *
1345 * Different firmware drivers can expose their EFI-like variables using
1346 * the following.
1347 */
1348
1349 struct efivar_operations {
1350 efi_get_variable_t *get_variable;
1351 efi_get_next_variable_t *get_next_variable;
1352 efi_set_variable_t *set_variable;
1353 efi_set_variable_t *set_variable_nonblocking;
1354 efi_query_variable_store_t *query_variable_store;
1355 };
1356
1357 struct efivars {
1358 struct kset *kset;
1359 struct kobject *kobject;
1360 const struct efivar_operations *ops;
1361 };
1362
1363 /*
1364 * The maximum size of VariableName + Data = 1024
1365 * Therefore, it's reasonable to save that much
1366 * space in each part of the structure,
1367 * and we use a page for reading/writing.
1368 */
1369
1370 #define EFI_VAR_NAME_LEN 1024
1371
1372 struct efi_variable {
1373 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1374 efi_guid_t VendorGuid;
1375 unsigned long DataSize;
1376 __u8 Data[1024];
1377 efi_status_t Status;
1378 __u32 Attributes;
1379 } __attribute__((packed));
1380
1381 struct efivar_entry {
1382 struct efi_variable var;
1383 struct list_head list;
1384 struct kobject kobj;
1385 bool scanning;
1386 bool deleting;
1387 };
1388
1389 typedef struct {
1390 u32 reset;
1391 u32 output_string;
1392 u32 test_string;
1393 } efi_simple_text_output_protocol_32_t;
1394
1395 typedef struct {
1396 u64 reset;
1397 u64 output_string;
1398 u64 test_string;
1399 } efi_simple_text_output_protocol_64_t;
1400
1401 struct efi_simple_text_output_protocol {
1402 void *reset;
1403 efi_status_t (*output_string)(void *, void *);
1404 void *test_string;
1405 };
1406
1407 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1408 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1409 #define PIXEL_BIT_MASK 2
1410 #define PIXEL_BLT_ONLY 3
1411 #define PIXEL_FORMAT_MAX 4
1412
1413 struct efi_pixel_bitmask {
1414 u32 red_mask;
1415 u32 green_mask;
1416 u32 blue_mask;
1417 u32 reserved_mask;
1418 };
1419
1420 struct efi_graphics_output_mode_info {
1421 u32 version;
1422 u32 horizontal_resolution;
1423 u32 vertical_resolution;
1424 int pixel_format;
1425 struct efi_pixel_bitmask pixel_information;
1426 u32 pixels_per_scan_line;
1427 } __packed;
1428
1429 struct efi_graphics_output_protocol_mode_32 {
1430 u32 max_mode;
1431 u32 mode;
1432 u32 info;
1433 u32 size_of_info;
1434 u64 frame_buffer_base;
1435 u32 frame_buffer_size;
1436 } __packed;
1437
1438 struct efi_graphics_output_protocol_mode_64 {
1439 u32 max_mode;
1440 u32 mode;
1441 u64 info;
1442 u64 size_of_info;
1443 u64 frame_buffer_base;
1444 u64 frame_buffer_size;
1445 } __packed;
1446
1447 struct efi_graphics_output_protocol_mode {
1448 u32 max_mode;
1449 u32 mode;
1450 unsigned long info;
1451 unsigned long size_of_info;
1452 u64 frame_buffer_base;
1453 unsigned long frame_buffer_size;
1454 } __packed;
1455
1456 struct efi_graphics_output_protocol_32 {
1457 u32 query_mode;
1458 u32 set_mode;
1459 u32 blt;
1460 u32 mode;
1461 };
1462
1463 struct efi_graphics_output_protocol_64 {
1464 u64 query_mode;
1465 u64 set_mode;
1466 u64 blt;
1467 u64 mode;
1468 };
1469
1470 struct efi_graphics_output_protocol {
1471 unsigned long query_mode;
1472 unsigned long set_mode;
1473 unsigned long blt;
1474 struct efi_graphics_output_protocol_mode *mode;
1475 };
1476
1477 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
1478 struct efi_graphics_output_protocol *, u32, unsigned long *,
1479 struct efi_graphics_output_mode_info **);
1480
1481 extern struct list_head efivar_sysfs_list;
1482
1483 static inline void
1484 efivar_unregister(struct efivar_entry *var)
1485 {
1486 kobject_put(&var->kobj);
1487 }
1488
1489 int efivars_register(struct efivars *efivars,
1490 const struct efivar_operations *ops,
1491 struct kobject *kobject);
1492 int efivars_unregister(struct efivars *efivars);
1493 struct kobject *efivars_kobject(void);
1494
1495 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1496 void *data, bool duplicates, struct list_head *head);
1497
1498 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1499 int efivar_entry_remove(struct efivar_entry *entry);
1500
1501 int __efivar_entry_delete(struct efivar_entry *entry);
1502 int efivar_entry_delete(struct efivar_entry *entry);
1503
1504 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1505 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1506 unsigned long *size, void *data);
1507 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1508 unsigned long *size, void *data);
1509 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1510 unsigned long size, void *data, struct list_head *head);
1511 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1512 unsigned long *size, void *data, bool *set);
1513 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1514 bool block, unsigned long size, void *data);
1515
1516 int efivar_entry_iter_begin(void);
1517 void efivar_entry_iter_end(void);
1518
1519 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1520 struct list_head *head, void *data,
1521 struct efivar_entry **prev);
1522 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1523 struct list_head *head, void *data);
1524
1525 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1526 struct list_head *head, bool remove);
1527
1528 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1529 unsigned long data_size);
1530 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1531 size_t len);
1532
1533 extern struct work_struct efivar_work;
1534 void efivar_run_worker(void);
1535
1536 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1537 int efivars_sysfs_init(void);
1538
1539 #define EFIVARS_DATA_SIZE_MAX 1024
1540
1541 #endif /* CONFIG_EFI_VARS */
1542 extern bool efi_capsule_pending(int *reset_type);
1543
1544 extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1545 size_t size, int *reset);
1546
1547 extern int efi_capsule_update(efi_capsule_header_t *capsule,
1548 phys_addr_t *pages);
1549
1550 #ifdef CONFIG_EFI_RUNTIME_MAP
1551 int efi_runtime_map_init(struct kobject *);
1552 int efi_get_runtime_map_size(void);
1553 int efi_get_runtime_map_desc_size(void);
1554 int efi_runtime_map_copy(void *buf, size_t bufsz);
1555 #else
1556 static inline int efi_runtime_map_init(struct kobject *kobj)
1557 {
1558 return 0;
1559 }
1560
1561 static inline int efi_get_runtime_map_size(void)
1562 {
1563 return 0;
1564 }
1565
1566 static inline int efi_get_runtime_map_desc_size(void)
1567 {
1568 return 0;
1569 }
1570
1571 static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1572 {
1573 return 0;
1574 }
1575
1576 #endif
1577
1578 /* prototypes shared between arch specific and generic stub code */
1579
1580 void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1581
1582 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1583 unsigned long addr);
1584
1585 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1586 efi_loaded_image_t *image, int *cmd_line_len);
1587
1588 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1589 struct efi_boot_memmap *map);
1590
1591 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1592 unsigned long size, unsigned long align,
1593 unsigned long *addr);
1594
1595 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1596 unsigned long size, unsigned long align,
1597 unsigned long *addr, unsigned long max);
1598
1599 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1600 unsigned long *image_addr,
1601 unsigned long image_size,
1602 unsigned long alloc_size,
1603 unsigned long preferred_addr,
1604 unsigned long alignment);
1605
1606 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1607 efi_loaded_image_t *image,
1608 char *cmd_line, char *option_string,
1609 unsigned long max_addr,
1610 unsigned long *load_addr,
1611 unsigned long *load_size);
1612
1613 efi_status_t efi_parse_options(char const *cmdline);
1614
1615 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
1616 struct screen_info *si, efi_guid_t *proto,
1617 unsigned long size);
1618
1619 #ifdef CONFIG_EFI
1620 extern bool efi_runtime_disabled(void);
1621 #else
1622 static inline bool efi_runtime_disabled(void) { return true; }
1623 #endif
1624
1625 extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
1626 extern unsigned long efi_call_virt_save_flags(void);
1627
1628 enum efi_secureboot_mode {
1629 efi_secureboot_mode_unset,
1630 efi_secureboot_mode_unknown,
1631 efi_secureboot_mode_disabled,
1632 efi_secureboot_mode_enabled,
1633 };
1634 enum efi_secureboot_mode efi_get_secureboot(efi_system_table_t *sys_table);
1635
1636 #ifdef CONFIG_RESET_ATTACK_MITIGATION
1637 void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg);
1638 #else
1639 static inline void
1640 efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { }
1641 #endif
1642
1643 void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table);
1644
1645 /*
1646 * Arch code can implement the following three template macros, avoiding
1647 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1648 *
1649 * * arch_efi_call_virt_setup()
1650 *
1651 * Sets up the environment for the call (e.g. switching page tables,
1652 * allowing kernel-mode use of floating point, if required).
1653 *
1654 * * arch_efi_call_virt()
1655 *
1656 * Performs the call. The last expression in the macro must be the call
1657 * itself, allowing the logic to be shared by the void and non-void
1658 * cases.
1659 *
1660 * * arch_efi_call_virt_teardown()
1661 *
1662 * Restores the usual kernel environment once the call has returned.
1663 */
1664
1665 #define efi_call_virt_pointer(p, f, args...) \
1666 ({ \
1667 efi_status_t __s; \
1668 unsigned long __flags; \
1669 \
1670 arch_efi_call_virt_setup(); \
1671 \
1672 __flags = efi_call_virt_save_flags(); \
1673 __s = arch_efi_call_virt(p, f, args); \
1674 efi_call_virt_check_flags(__flags, __stringify(f)); \
1675 \
1676 arch_efi_call_virt_teardown(); \
1677 \
1678 __s; \
1679 })
1680
1681 #define __efi_call_virt_pointer(p, f, args...) \
1682 ({ \
1683 unsigned long __flags; \
1684 \
1685 arch_efi_call_virt_setup(); \
1686 \
1687 __flags = efi_call_virt_save_flags(); \
1688 arch_efi_call_virt(p, f, args); \
1689 efi_call_virt_check_flags(__flags, __stringify(f)); \
1690 \
1691 arch_efi_call_virt_teardown(); \
1692 })
1693
1694 typedef efi_status_t (*efi_exit_boot_map_processing)(
1695 efi_system_table_t *sys_table_arg,
1696 struct efi_boot_memmap *map,
1697 void *priv);
1698
1699 efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table,
1700 void *handle,
1701 struct efi_boot_memmap *map,
1702 void *priv,
1703 efi_exit_boot_map_processing priv_func);
1704
1705 #define EFI_RANDOM_SEED_SIZE 64U
1706
1707 struct linux_efi_random_seed {
1708 u32 size;
1709 u8 bits[];
1710 };
1711
1712 struct linux_efi_tpm_eventlog {
1713 u32 size;
1714 u32 final_events_preboot_size;
1715 u8 version;
1716 u8 log[];
1717 };
1718
1719 extern int efi_tpm_eventlog_init(void);
1720
1721 struct efi_tcg2_final_events_table {
1722 u64 version;
1723 u64 nr_events;
1724 u8 events[];
1725 };
1726 extern int efi_tpm_final_log_size;
1727
1728 /*
1729 * efi_runtime_service() function identifiers.
1730 * "NONE" is used by efi_recover_from_page_fault() to check if the page
1731 * fault happened while executing an efi runtime service.
1732 */
1733 enum efi_rts_ids {
1734 EFI_NONE,
1735 EFI_GET_TIME,
1736 EFI_SET_TIME,
1737 EFI_GET_WAKEUP_TIME,
1738 EFI_SET_WAKEUP_TIME,
1739 EFI_GET_VARIABLE,
1740 EFI_GET_NEXT_VARIABLE,
1741 EFI_SET_VARIABLE,
1742 EFI_QUERY_VARIABLE_INFO,
1743 EFI_GET_NEXT_HIGH_MONO_COUNT,
1744 EFI_RESET_SYSTEM,
1745 EFI_UPDATE_CAPSULE,
1746 EFI_QUERY_CAPSULE_CAPS,
1747 };
1748
1749 /*
1750 * efi_runtime_work: Details of EFI Runtime Service work
1751 * @arg<1-5>: EFI Runtime Service function arguments
1752 * @status: Status of executing EFI Runtime Service
1753 * @efi_rts_id: EFI Runtime Service function identifier
1754 * @efi_rts_comp: Struct used for handling completions
1755 */
1756 struct efi_runtime_work {
1757 void *arg1;
1758 void *arg2;
1759 void *arg3;
1760 void *arg4;
1761 void *arg5;
1762 efi_status_t status;
1763 struct work_struct work;
1764 enum efi_rts_ids efi_rts_id;
1765 struct completion efi_rts_comp;
1766 };
1767
1768 extern struct efi_runtime_work efi_rts_work;
1769
1770 /* Workqueue to queue EFI Runtime Services */
1771 extern struct workqueue_struct *efi_rts_wq;
1772
1773 struct linux_efi_memreserve {
1774 int size; // allocated size of the array
1775 atomic_t count; // number of entries used
1776 phys_addr_t next; // pa of next struct instance
1777 struct {
1778 phys_addr_t base;
1779 phys_addr_t size;
1780 } entry[0];
1781 };
1782
1783 #define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \
1784 (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
1785
1786 #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \
1787 / sizeof(((struct linux_efi_memreserve *)0)->entry[0]))
1788
1789 #endif /* _LINUX_EFI_H */
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