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[mirror_ubuntu-zesty-kernel.git] / include / linux / efi.h
CommitLineData
1da177e4
LT		 1#ifndef _LINUX_EFI_H
2#define _LINUX_EFI_H
3
4/*
5 * Extensible Firmware Interface
6 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999
7 *
8 * Copyright (C) 1999 VA Linux Systems
9 * Copyright (C) 1999 Walt Drummond <drummond@valinux.com>
10 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co.
11 * David Mosberger-Tang <davidm@hpl.hp.com>
12 * Stephane Eranian <eranian@hpl.hp.com>
13 */
14#include <linux/init.h>
15#include <linux/string.h>
16#include <linux/time.h>
17#include <linux/types.h>
18#include <linux/proc_fs.h>
19#include <linux/rtc.h>
20#include <linux/ioport.h>
4a3575fd 21#include <linux/pfn.h>
5ee9c198 22#include <linux/pstore.h>
60863c0d 23#include <linux/range.h>
8562c99c 24#include <linux/reboot.h>
ba7e34b1 25#include <linux/uuid.h>
2c23b73c 26#include <linux/screen_info.h>
1da177e4
LT		 27
28#include <asm/page.h>
1da177e4
LT		 29
30#define EFI_SUCCESS 0
31#define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
32#define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
33#define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
34#define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
35#define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
5d9db883
MG		 36#define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
37#define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
38#define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
39#define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
1da177e4 40#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
dce48e35 41#define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
5d9db883 42#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
1da177e4
LT		 43
44typedef unsigned long efi_status_t;
45typedef u8 efi_bool_t;
46typedef u16 efi_char16_t; /* UNICODE character */
ed37ddff
RF		 47typedef u64 efi_physical_addr_t;
48typedef void *efi_handle_t;
1da177e4 49
ba7e34b1 50typedef uuid_le efi_guid_t;
1da177e4
LT		 51
52#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
ba7e34b1 53 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
1da177e4
LT		 54
55/*
56 * Generic EFI table header
57 */
58typedef struct {
59 u64 signature;
60 u32 revision;
61 u32 headersize;
62 u32 crc32;
63 u32 reserved;
64} efi_table_hdr_t;
65
66/*
67 * Memory map descriptor:
68 */
69
70/* Memory types: */
71#define EFI_RESERVED_TYPE 0
72#define EFI_LOADER_CODE 1
73#define EFI_LOADER_DATA 2
74#define EFI_BOOT_SERVICES_CODE 3
75#define EFI_BOOT_SERVICES_DATA 4
76#define EFI_RUNTIME_SERVICES_CODE 5
77#define EFI_RUNTIME_SERVICES_DATA 6
78#define EFI_CONVENTIONAL_MEMORY 7
79#define EFI_UNUSABLE_MEMORY 8
80#define EFI_ACPI_RECLAIM_MEMORY 9
81#define EFI_ACPI_MEMORY_NVS 10
82#define EFI_MEMORY_MAPPED_IO 11
83#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
84#define EFI_PAL_CODE 13
ad5fb870
DW		 85#define EFI_PERSISTENT_MEMORY 14
86#define EFI_MAX_MEMORY_TYPE 15
1da177e4
LT		 87
88/* Attribute values: */
89#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
90#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
91#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
92#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
9c97e0bd 93#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
1da177e4
LT		 94#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
95#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
96#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
c016ca08 97#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
b05b9f5f
TL		 98#define EFI_MEMORY_MORE_RELIABLE \
99 ((u64)0x0000000000010000ULL) /* higher reliability */
87db73ae 100#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
1da177e4
LT		 101#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
102#define EFI_MEMORY_DESCRIPTOR_VERSION 1
103
104#define EFI_PAGE_SHIFT 12
ed37ddff 105#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
0100a3e6 106#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
1da177e4 107
1da177e4
LT		 108typedef struct {
109 u32 type;
110 u32 pad;
111 u64 phys_addr;
112 u64 virt_addr;
113 u64 num_pages;
114 u64 attribute;
1da177e4
LT		 115} efi_memory_desc_t;
116
3b370237
MG		 117typedef struct {
118 efi_guid_t guid;
119 u32 headersize;
120 u32 flags;
121 u32 imagesize;
122} efi_capsule_header_t;
123
dadb57ab
JH		 124struct efi_boot_memmap {
125 efi_memory_desc_t **map;
126 unsigned long *map_size;
127 unsigned long *desc_size;
128 u32 *desc_ver;
129 unsigned long *key_ptr;
130 unsigned long *buff_size;
131};
132
f0133f3c
MF		 133/*
134 * EFI capsule flags
135 */
136#define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
137#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
138#define EFI_CAPSULE_INITIATE_RESET 0x00040000
139
bb05e4ba
MF		 140/*
141 * Allocation types for calls to boottime->allocate_pages.
142 */
143#define EFI_ALLOCATE_ANY_PAGES 0
144#define EFI_ALLOCATE_MAX_ADDRESS 1
145#define EFI_ALLOCATE_ADDRESS 2
146#define EFI_MAX_ALLOCATE_TYPE 3
147
e088a4ad 148typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
1da177e4
LT		 149
150/*
151 * Types and defines for Time Services
152 */
153#define EFI_TIME_ADJUST_DAYLIGHT 0x1
154#define EFI_TIME_IN_DAYLIGHT 0x2
155#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
156
157typedef struct {
158 u16 year;
159 u8 month;
160 u8 day;
161 u8 hour;
162 u8 minute;
163 u8 second;
164 u8 pad1;
165 u32 nanosecond;
166 s16 timezone;
167 u8 daylight;
168 u8 pad2;
169} efi_time_t;
170
171typedef struct {
172 u32 resolution;
173 u32 accuracy;
174 u8 sets_to_zero;
175} efi_time_cap_t;
176
677703ce
MF		 177typedef struct {
178 efi_table_hdr_t hdr;
179 u32 raise_tpl;
180 u32 restore_tpl;
181 u32 allocate_pages;
182 u32 free_pages;
183 u32 get_memory_map;
184 u32 allocate_pool;
185 u32 free_pool;
186 u32 create_event;
187 u32 set_timer;
188 u32 wait_for_event;
189 u32 signal_event;
190 u32 close_event;
191 u32 check_event;
192 u32 install_protocol_interface;
193 u32 reinstall_protocol_interface;
194 u32 uninstall_protocol_interface;
195 u32 handle_protocol;
196 u32 __reserved;
197 u32 register_protocol_notify;
198 u32 locate_handle;
199 u32 locate_device_path;
200 u32 install_configuration_table;
201 u32 load_image;
202 u32 start_image;
203 u32 exit;
204 u32 unload_image;
205 u32 exit_boot_services;
206 u32 get_next_monotonic_count;
207 u32 stall;
208 u32 set_watchdog_timer;
209 u32 connect_controller;
210 u32 disconnect_controller;
211 u32 open_protocol;
212 u32 close_protocol;
213 u32 open_protocol_information;
214 u32 protocols_per_handle;
215 u32 locate_handle_buffer;
216 u32 locate_protocol;
217 u32 install_multiple_protocol_interfaces;
218 u32 uninstall_multiple_protocol_interfaces;
219 u32 calculate_crc32;
220 u32 copy_mem;
221 u32 set_mem;
222 u32 create_event_ex;
223} __packed efi_boot_services_32_t;
224
225typedef struct {
226 efi_table_hdr_t hdr;
227 u64 raise_tpl;
228 u64 restore_tpl;
229 u64 allocate_pages;
230 u64 free_pages;
231 u64 get_memory_map;
232 u64 allocate_pool;
233 u64 free_pool;
234 u64 create_event;
235 u64 set_timer;
236 u64 wait_for_event;
237 u64 signal_event;
238 u64 close_event;
239 u64 check_event;
240 u64 install_protocol_interface;
241 u64 reinstall_protocol_interface;
242 u64 uninstall_protocol_interface;
243 u64 handle_protocol;
244 u64 __reserved;
245 u64 register_protocol_notify;
246 u64 locate_handle;
247 u64 locate_device_path;
248 u64 install_configuration_table;
249 u64 load_image;
250 u64 start_image;
251 u64 exit;
252 u64 unload_image;
253 u64 exit_boot_services;
254 u64 get_next_monotonic_count;
255 u64 stall;
256 u64 set_watchdog_timer;
257 u64 connect_controller;
258 u64 disconnect_controller;
259 u64 open_protocol;
260 u64 close_protocol;
261 u64 open_protocol_information;
262 u64 protocols_per_handle;
263 u64 locate_handle_buffer;
264 u64 locate_protocol;
265 u64 install_multiple_protocol_interfaces;
266 u64 uninstall_multiple_protocol_interfaces;
267 u64 calculate_crc32;
268 u64 copy_mem;
269 u64 set_mem;
270 u64 create_event_ex;
271} __packed efi_boot_services_64_t;
272
f30ca6ba
MF		 273/*
274 * EFI Boot Services table
275 */
276typedef struct {
277 efi_table_hdr_t hdr;
278 void *raise_tpl;
279 void *restore_tpl;
ed37ddff
RF		 280 efi_status_t (*allocate_pages)(int, int, unsigned long,
281 efi_physical_addr_t *);
282 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
283 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
284 unsigned long *, u32 *);
285 efi_status_t (*allocate_pool)(int, unsigned long, void **);
286 efi_status_t (*free_pool)(void *);
f30ca6ba
MF		 287 void *create_event;
288 void *set_timer;
289 void *wait_for_event;
290 void *signal_event;
291 void *close_event;
292 void *check_event;
293 void *install_protocol_interface;
294 void *reinstall_protocol_interface;
295 void *uninstall_protocol_interface;
ed37ddff 296 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
f30ca6ba
MF		 297 void *__reserved;
298 void *register_protocol_notify;
fc372064
AB		 299 efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
300 unsigned long *, efi_handle_t *);
f30ca6ba 301 void *locate_device_path;
801820be 302 efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
f30ca6ba
MF		 303 void *load_image;
304 void *start_image;
305 void *exit;
306 void *unload_image;
ed37ddff 307 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
f30ca6ba
MF		 308 void *get_next_monotonic_count;
309 void *stall;
310 void *set_watchdog_timer;
311 void *connect_controller;
312 void *disconnect_controller;
313 void *open_protocol;
314 void *close_protocol;
315 void *open_protocol_information;
316 void *protocols_per_handle;
317 void *locate_handle_buffer;
e4fbf476 318 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
f30ca6ba
MF		 319 void *install_multiple_protocol_interfaces;
320 void *uninstall_multiple_protocol_interfaces;
321 void *calculate_crc32;
322 void *copy_mem;
323 void *set_mem;
324 void *create_event_ex;
325} efi_boot_services_t;
326
dd5fc854
MG		 327typedef enum {
328 EfiPciIoWidthUint8,
329 EfiPciIoWidthUint16,
330 EfiPciIoWidthUint32,
331 EfiPciIoWidthUint64,
332 EfiPciIoWidthFifoUint8,
333 EfiPciIoWidthFifoUint16,
334 EfiPciIoWidthFifoUint32,
335 EfiPciIoWidthFifoUint64,
336 EfiPciIoWidthFillUint8,
337 EfiPciIoWidthFillUint16,
338 EfiPciIoWidthFillUint32,
339 EfiPciIoWidthFillUint64,
340 EfiPciIoWidthMaximum
341} EFI_PCI_IO_PROTOCOL_WIDTH;
342
343typedef enum {
344 EfiPciIoAttributeOperationGet,
345 EfiPciIoAttributeOperationSet,
346 EfiPciIoAttributeOperationEnable,
347 EfiPciIoAttributeOperationDisable,
348 EfiPciIoAttributeOperationSupported,
349 EfiPciIoAttributeOperationMaximum
350} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
351
677703ce
MF		 352typedef struct {
353 u32 read;
354 u32 write;
355} efi_pci_io_protocol_access_32_t;
356
357typedef struct {
358 u64 read;
359 u64 write;
360} efi_pci_io_protocol_access_64_t;
dd5fc854
MG		 361
362typedef struct {
363 void *read;
364 void *write;
365} efi_pci_io_protocol_access_t;
366
677703ce
MF		 367typedef struct {
368 u32 poll_mem;
369 u32 poll_io;
370 efi_pci_io_protocol_access_32_t mem;
371 efi_pci_io_protocol_access_32_t io;
372 efi_pci_io_protocol_access_32_t pci;
373 u32 copy_mem;
374 u32 map;
375 u32 unmap;
376 u32 allocate_buffer;
377 u32 free_buffer;
378 u32 flush;
379 u32 get_location;
380 u32 attributes;
381 u32 get_bar_attributes;
382 u32 set_bar_attributes;
383 uint64_t romsize;
384 void *romimage;
385} efi_pci_io_protocol_32;
386
387typedef struct {
388 u64 poll_mem;
389 u64 poll_io;
390 efi_pci_io_protocol_access_64_t mem;
391 efi_pci_io_protocol_access_64_t io;
392 efi_pci_io_protocol_access_64_t pci;
393 u64 copy_mem;
394 u64 map;
395 u64 unmap;
396 u64 allocate_buffer;
397 u64 free_buffer;
398 u64 flush;
399 u64 get_location;
400 u64 attributes;
401 u64 get_bar_attributes;
402 u64 set_bar_attributes;
403 uint64_t romsize;
404 void *romimage;
405} efi_pci_io_protocol_64;
406
dd5fc854
MG		 407typedef struct {
408 void *poll_mem;
409 void *poll_io;
410 efi_pci_io_protocol_access_t mem;
411 efi_pci_io_protocol_access_t io;
412 efi_pci_io_protocol_access_t pci;
413 void *copy_mem;
414 void *map;
415 void *unmap;
416 void *allocate_buffer;
417 void *free_buffer;
418 void *flush;
419 void *get_location;
420 void *attributes;
421 void *get_bar_attributes;
422 void *set_bar_attributes;
423 uint64_t romsize;
424 void *romimage;
425} efi_pci_io_protocol;
426
427#define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
428#define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
429#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
430#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
431#define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
432#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
433#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
434#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
435#define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
436#define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
437#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
438#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
439#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
440#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
441#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
442#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
443#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
444#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
445#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
446
58c5475a
LW		 447typedef struct {
448 u32 version;
449 u32 get;
450 u32 set;
451 u32 del;
452 u32 get_all;
453} apple_properties_protocol_32_t;
454
455typedef struct {
456 u64 version;
457 u64 get;
458 u64 set;
459 u64 del;
460 u64 get_all;
461} apple_properties_protocol_64_t;
462
1da177e4
LT		 463/*
464 * Types and defines for EFI ResetSystem
465 */
466#define EFI_RESET_COLD 0
467#define EFI_RESET_WARM 1
468#define EFI_RESET_SHUTDOWN 2
469
470/*
471 * EFI Runtime Services table
472 */
473#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
474#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
475
677703ce
MF		 476typedef struct {
477 efi_table_hdr_t hdr;
478 u32 get_time;
479 u32 set_time;
480 u32 get_wakeup_time;
481 u32 set_wakeup_time;
482 u32 set_virtual_address_map;
483 u32 convert_pointer;
484 u32 get_variable;
485 u32 get_next_variable;
486 u32 set_variable;
487 u32 get_next_high_mono_count;
488 u32 reset_system;
489 u32 update_capsule;
490 u32 query_capsule_caps;
491 u32 query_variable_info;
492} efi_runtime_services_32_t;
493
494typedef struct {
495 efi_table_hdr_t hdr;
496 u64 get_time;
497 u64 set_time;
498 u64 get_wakeup_time;
499 u64 set_wakeup_time;
500 u64 set_virtual_address_map;
501 u64 convert_pointer;
502 u64 get_variable;
503 u64 get_next_variable;
504 u64 set_variable;
505 u64 get_next_high_mono_count;
506 u64 reset_system;
507 u64 update_capsule;
508 u64 query_capsule_caps;
509 u64 query_variable_info;
510} efi_runtime_services_64_t;
511
1da177e4
LT		 512typedef struct {
513 efi_table_hdr_t hdr;
43ab0476
BP		 514 void *get_time;
515 void *set_time;
516 void *get_wakeup_time;
517 void *set_wakeup_time;
518 void *set_virtual_address_map;
519 void *convert_pointer;
520 void *get_variable;
521 void *get_next_variable;
522 void *set_variable;
523 void *get_next_high_mono_count;
524 void *reset_system;
525 void *update_capsule;
526 void *query_capsule_caps;
527 void *query_variable_info;
1da177e4
LT		 528} efi_runtime_services_t;
529
530typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
531typedef efi_status_t efi_set_time_t (efi_time_t *tm);
532typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
533 efi_time_t *tm);
534typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
535typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
536 unsigned long *data_size, void *data);
537typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
538 efi_guid_t *vendor);
539typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
f7a2d73f 540 u32 attr, unsigned long data_size,
1da177e4
LT		 541 void *data);
542typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
543typedef void efi_reset_system_t (int reset_type, efi_status_t status,
544 unsigned long data_size, efi_char16_t *data);
545typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
546 unsigned long descriptor_size,
547 u32 descriptor_version,
548 efi_memory_desc_t *virtual_map);
3b370237
MG		 549typedef efi_status_t efi_query_variable_info_t(u32 attr,
550 u64 *storage_space,
551 u64 *remaining_space,
552 u64 *max_variable_size);
553typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
554 unsigned long count,
555 unsigned long sg_list);
556typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
557 unsigned long count,
558 u64 *max_size,
559 int *reset_type);
ca0e30dc
AB		 560typedef efi_status_t efi_query_variable_store_t(u32 attributes,
561 unsigned long size,
562 bool nonblocking);
1da177e4 563
022ee6c5
AB		 564void efi_native_runtime_setup(void);
565
1da177e4 566/*
54fd11fe
PJ		 567 * EFI Configuration Table and GUID definitions
568 *
7fb2b43c
IM		 569 * These are all defined in a single line to make them easier to
570 * grep for and to see them at a glance - while still having a
571 * similar structure to the definitions in the spec.
572 *
573 * Here's how they are structured:
54fd11fe
PJ		 574 *
575 * GUID: 12345678-1234-1234-1234-123456789012
576 * Spec:
577 * #define EFI_SOME_PROTOCOL_GUID \
578 * {0x12345678,0x1234,0x1234,\
579 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
580 * Here:
7fb2b43c
IM		 581 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
582 * ^ tabs ^extra space
583 *
584 * Note that the 'extra space' separates the values at the same place
585 * where the UEFI SPEC breaks the line.
1da177e4 586 */
7fb2b43c
IM		 587#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
588#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
589#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
590#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
591#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
592#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
593#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
594#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
595#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
596#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
597#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
598#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
599#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
600#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
601#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
602#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
603#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
604#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
605#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
606#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
607#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
608#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
568bc4e8 609#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
7fb2b43c
IM		 610#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
611#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
58c5475a 612#define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
fc372064 613
801820be
AB		 614/*
615 * This GUID is used to pass to the kernel proper the struct screen_info
616 * structure that was populated by the stub based on the GOP protocol instance
617 * associated with ConOut
618 */
7fb2b43c
IM		 619#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
620#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
63625988 621#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
06f7d4a1 622
3572a130
DH		 623#define EFI_CERT_SHA256_GUID \
624 EFI_GUID( 0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28 )
625
626#define EFI_CERT_X509_GUID \
627 EFI_GUID( 0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72 )
628
1adbfa35
OJ		 629typedef struct {
630 efi_guid_t guid;
631 u64 table;
632} efi_config_table_64_t;
633
16eb7765
JB		 634#define EFI_IMAGE_SECURITY_DATABASE_GUID \
635 EFI_GUID( 0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f )
636
637#define EFI_SHIM_LOCK_GUID \
638 EFI_GUID( 0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23 )
639
1adbfa35
OJ		 640typedef struct {
641 efi_guid_t guid;
642 u32 table;
643} efi_config_table_32_t;
644
1da177e4
LT		 645typedef struct {
646 efi_guid_t guid;
647 unsigned long table;
648} efi_config_table_t;
649
272686bf
LL		 650typedef struct {
651 efi_guid_t guid;
652 const char *name;
653 unsigned long *ptr;
654} efi_config_table_type_t;
655
1da177e4 656#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
1da177e4 657
3b370237
MG		 658#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
659#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
660#define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
661#define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
662#define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
663#define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
664
1adbfa35
OJ		 665typedef struct {
666 efi_table_hdr_t hdr;
667 u64 fw_vendor; /* physical addr of CHAR16 vendor string */
668 u32 fw_revision;
669 u32 __pad1;
670 u64 con_in_handle;
671 u64 con_in;
672 u64 con_out_handle;
673 u64 con_out;
674 u64 stderr_handle;
675 u64 stderr;
676 u64 runtime;
677 u64 boottime;
678 u32 nr_tables;
679 u32 __pad2;
680 u64 tables;
681} efi_system_table_64_t;
682
683typedef struct {
684 efi_table_hdr_t hdr;
685 u32 fw_vendor; /* physical addr of CHAR16 vendor string */
686 u32 fw_revision;
687 u32 con_in_handle;
688 u32 con_in;
689 u32 con_out_handle;
690 u32 con_out;
691 u32 stderr_handle;
692 u32 stderr;
693 u32 runtime;
694 u32 boottime;
695 u32 nr_tables;
696 u32 tables;
697} efi_system_table_32_t;
698
1da177e4
LT		 699typedef struct {
700 efi_table_hdr_t hdr;
701 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
702 u32 fw_revision;
703 unsigned long con_in_handle;
704 unsigned long con_in;
705 unsigned long con_out_handle;
706 unsigned long con_out;
707 unsigned long stderr_handle;
708 unsigned long stderr;
709 efi_runtime_services_t *runtime;
f30ca6ba 710 efi_boot_services_t *boottime;
1da177e4
LT		 711 unsigned long nr_tables;
712 unsigned long tables;
713} efi_system_table_t;
714
9479c7ce
MF		 715/*
716 * Architecture independent structure for describing a memory map for the
717 * benefit of efi_memmap_init_early(), saving us the need to pass four
718 * parameters.
719 */
720struct efi_memory_map_data {
721 phys_addr_t phys_map;
722 unsigned long size;
723 unsigned long desc_version;
724 unsigned long desc_size;
725};
726
1da177e4 727struct efi_memory_map {
44511fb9 728 phys_addr_t phys_map;
7ae65fd3
MT		 729 void *map;
730 void *map_end;
1da177e4
LT		 731 int nr_map;
732 unsigned long desc_version;
7ae65fd3 733 unsigned long desc_size;
dca0f971 734 bool late;
1da177e4
LT		 735};
736
60863c0d
MF		 737struct efi_mem_range {
738 struct range range;
739 u64 attribute;
1da177e4
LT		 740};
741
0302f71c
MS		 742struct efi_fdt_params {
743 u64 system_table;
744 u64 mmap;
745 u32 mmap_size;
746 u32 desc_size;
747 u32 desc_ver;
748};
749
677703ce
MF		 750typedef struct {
751 u32 revision;
752 u32 parent_handle;
753 u32 system_table;
754 u32 device_handle;
755 u32 file_path;
756 u32 reserved;
757 u32 load_options_size;
758 u32 load_options;
759 u32 image_base;
760 __aligned_u64 image_size;
761 unsigned int image_code_type;
762 unsigned int image_data_type;
763 unsigned long unload;
764} efi_loaded_image_32_t;
765
766typedef struct {
767 u32 revision;
768 u64 parent_handle;
769 u64 system_table;
770 u64 device_handle;
771 u64 file_path;
772 u64 reserved;
773 u32 load_options_size;
774 u64 load_options;
775 u64 image_base;
776 __aligned_u64 image_size;
777 unsigned int image_code_type;
778 unsigned int image_data_type;
779 unsigned long unload;
780} efi_loaded_image_64_t;
781
8e84f345
MF		 782typedef struct {
783 u32 revision;
784 void *parent_handle;
785 efi_system_table_t *system_table;
786 void *device_handle;
787 void *file_path;
788 void *reserved;
789 u32 load_options_size;
790 void *load_options;
791 void *image_base;
792 __aligned_u64 image_size;
793 unsigned int image_code_type;
794 unsigned int image_data_type;
795 unsigned long unload;
796} efi_loaded_image_t;
797
55839d51
MF		 798
799typedef struct {
800 u64 size;
801 u64 file_size;
802 u64 phys_size;
803 efi_time_t create_time;
804 efi_time_t last_access_time;
805 efi_time_t modification_time;
806 __aligned_u64 attribute;
807 efi_char16_t filename[1];
808} efi_file_info_t;
809
677703ce
MF		 810typedef struct {
811 u64 revision;
812 u32 open;
813 u32 close;
814 u32 delete;
815 u32 read;
816 u32 write;
817 u32 get_position;
818 u32 set_position;
819 u32 get_info;
820 u32 set_info;
821 u32 flush;
822} efi_file_handle_32_t;
823
824typedef struct {
825 u64 revision;
826 u64 open;
827 u64 close;
828 u64 delete;
829 u64 read;
830 u64 write;
831 u64 get_position;
832 u64 set_position;
833 u64 get_info;
834 u64 set_info;
835 u64 flush;
836} efi_file_handle_64_t;
837
ed37ddff 838typedef struct _efi_file_handle {
55839d51 839 u64 revision;
ed37ddff
RF		 840 efi_status_t (*open)(struct _efi_file_handle *,
841 struct _efi_file_handle **,
842 efi_char16_t *, u64, u64);
843 efi_status_t (*close)(struct _efi_file_handle *);
55839d51 844 void *delete;
ed37ddff
RF		 845 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
846 void *);
55839d51
MF		 847 void *write;
848 void *get_position;
849 void *set_position;
ed37ddff
RF		 850 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
851 unsigned long *, void *);
55839d51
MF		 852 void *set_info;
853 void *flush;
854} efi_file_handle_t;
855
ed37ddff
RF		 856typedef struct _efi_file_io_interface {
857 u64 revision;
858 int (*open_volume)(struct _efi_file_io_interface *,
859 efi_file_handle_t **);
860} efi_file_io_interface_t;
861
55839d51
MF		 862#define EFI_FILE_MODE_READ 0x0000000000000001
863#define EFI_FILE_MODE_WRITE 0x0000000000000002
864#define EFI_FILE_MODE_CREATE 0x8000000000000000
865
bf924863
AB		 866typedef struct {
867 u32 version;
868 u32 length;
869 u64 memory_protection_attribute;
870} efi_properties_table_t;
871
872#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
873#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
874
b2c99e3c
BH		 875#define EFI_INVALID_TABLE_ADDR (~0UL)
876
a604af07
AB		 877typedef struct {
878 u32 version;
879 u32 num_entries;
880 u32 desc_size;
881 u32 reserved;
882 efi_memory_desc_t entry[0];
883} efi_memory_attributes_table_t;
884
3572a130
DH		 885typedef struct {
886 efi_guid_t signature_owner;
887 u8 signature_data[];
888} efi_signature_data_t;
889
890typedef struct {
891 efi_guid_t signature_type;
892 u32 signature_list_size;
893 u32 signature_header_size;
894 u32 signature_size;
895 u8 signature_header[];
896 /* efi_signature_data_t signatures[][] */
897} efi_signature_list_t;
898
1da177e4
LT		 899/*
900 * All runtime access to EFI goes through this structure:
901 */
902extern struct efi {
903 efi_system_table_t *systab; /* EFI system table */
3b370237 904 unsigned int runtime_version; /* Runtime services version */
b2c99e3c
BH		 905 unsigned long mps; /* MPS table */
906 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
907 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
e1ccbbc9
AB		 908 unsigned long smbios; /* SMBIOS table (32 bit entry point) */
909 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
b2c99e3c
BH		 910 unsigned long sal_systab; /* SAL system table */
911 unsigned long boot_info; /* boot info table */
912 unsigned long hcdp; /* HCDP table */
913 unsigned long uga; /* UGA table */
a50f70b1 914 unsigned long uv_systab; /* UV system table */
a0998eb1
DY		 915 unsigned long fw_vendor; /* fw_vendor */
916 unsigned long runtime; /* runtime table */
917 unsigned long config_table; /* config tables */
0bb54905 918 unsigned long esrt; /* ESRT table */
bf924863 919 unsigned long properties_table; /* properties table */
a604af07 920 unsigned long mem_attr_table; /* memory attributes table */
63625988 921 unsigned long rng_seed; /* UEFI firmware random seed */
1da177e4
LT		 922 efi_get_time_t *get_time;
923 efi_set_time_t *set_time;
924 efi_get_wakeup_time_t *get_wakeup_time;
925 efi_set_wakeup_time_t *set_wakeup_time;
926 efi_get_variable_t *get_variable;
927 efi_get_next_variable_t *get_next_variable;
928 efi_set_variable_t *set_variable;
70d2a3cf 929 efi_set_variable_t *set_variable_nonblocking;
3b370237 930 efi_query_variable_info_t *query_variable_info;
d3cac1f8 931 efi_query_variable_info_t *query_variable_info_nonblocking;
3b370237
MG		 932 efi_update_capsule_t *update_capsule;
933 efi_query_capsule_caps_t *query_capsule_caps;
1da177e4
LT		 934 efi_get_next_high_mono_count_t *get_next_high_mono_count;
935 efi_reset_system_t *reset_system;
936 efi_set_virtual_address_map_t *set_virtual_address_map;
884f4f66 937 struct efi_memory_map memmap;
3e909599 938 unsigned long flags;
1da177e4
LT		 939} efi;
940
941static inline int
942efi_guidcmp (efi_guid_t left, efi_guid_t right)
943{
944 return memcmp(&left, &right, sizeof (efi_guid_t));
945}
946
947static inline char *
26e02272 948efi_guid_to_str(efi_guid_t *guid, char *out)
1da177e4 949{
925ede0b 950 sprintf(out, "%pUl", guid->b);
1da177e4
LT		 951 return out;
952}
953
954extern void efi_init (void);
955extern void *efi_get_pal_addr (void);
956extern void efi_map_pal_code (void);
1da177e4 957extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
70f4f935 958extern void efi_gettimeofday (struct timespec64 *ts);
1da177e4 959extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
78510792 960#ifdef CONFIG_X86
2223af38 961extern void efi_late_init(void);
78510792 962extern void efi_free_boot_services(void);
ca0e30dc
AB		 963extern efi_status_t efi_query_variable_store(u32 attributes,
964 unsigned long size,
965 bool nonblocking);
b05b9f5f 966extern void efi_find_mirror(void);
78510792 967#else
2223af38 968static inline void efi_late_init(void) {}
78510792 969static inline void efi_free_boot_services(void) {}
a6e4d5a0 970
ca0e30dc
AB		 971static inline efi_status_t efi_query_variable_store(u32 attributes,
972 unsigned long size,
973 bool nonblocking)
a6e4d5a0
MF		 974{
975 return EFI_SUCCESS;
976}
78510792 977#endif
7bc90e01 978extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
9479c7ce 979
20b1e22d 980extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries);
9479c7ce 981extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
dca0f971 982extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
9479c7ce 983extern void __init efi_memmap_unmap(void);
c45f4da3 984extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map);
60863c0d
MF		 985extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
986 struct range *range);
987extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
988 void *buf, struct efi_mem_range *mem);
9479c7ce 989
272686bf 990extern int efi_config_init(efi_config_table_type_t *arch_tables);
3846c158 991#ifdef CONFIG_EFI_ESRT
0bb54905 992extern void __init efi_esrt_init(void);
3846c158
PJ		 993#else
994static inline void efi_esrt_init(void) { }
995#endif
7bb68410
AB		 996extern int efi_config_parse_tables(void *config_tables, int count, int sz,
997 efi_config_table_type_t *arch_tables);
1da177e4
LT		 998extern u64 efi_get_iobase (void);
999extern u32 efi_mem_type (unsigned long phys_addr);
1000extern u64 efi_mem_attributes (unsigned long phys_addr);
32e62c63 1001extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
1da177e4 1002extern int __init efi_uart_console_only (void);
0bb54905
PJ		 1003extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
1004extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
816e7612 1005extern void efi_mem_reserve(phys_addr_t addr, u64 size);
1da177e4 1006extern void efi_initialize_iomem_resources(struct resource *code_resource,
00bf4098 1007 struct resource *data_resource, struct resource *bss_resource);
916f676f 1008extern void efi_reserve_boot_services(void);
7968c0e3 1009extern int efi_get_fdt_params(struct efi_fdt_params *params);
0bb54905 1010extern struct kobject *efi_kobj;
1da177e4 1011
44be28e9 1012extern int efi_reboot_quirk_mode;
0c5ed61a
MF		 1013extern bool efi_poweroff_required(void);
1014
0f96a99d
TI		 1015#ifdef CONFIG_EFI_FAKE_MEMMAP
1016extern void __init efi_fake_memmap(void);
1017#else
1018static inline void efi_fake_memmap(void) { }
1019#endif
1020
10f0d2f5
AB		 1021/*
1022 * efi_memattr_perm_setter - arch specific callback function passed into
1023 * efi_memattr_apply_permissions() that updates the
1024 * mapping permissions described by the second
1025 * argument in the page tables referred to by the
1026 * first argument.
1027 */
1028typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
1029
1030extern int efi_memattr_init(void);
1031extern int efi_memattr_apply_permissions(struct mm_struct *mm,
1032 efi_memattr_perm_setter fn);
1033
e885cd80 1034/* Iterate through an efi_memory_map */
78ce248f 1035#define for_each_efi_memory_desc_in_map(m, md) \
e885cd80 1036 for ((md) = (m)->map; \
d4c4fed0 1037 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
e885cd80
MS		 1038 (md) = (void *)(md) + (m)->desc_size)
1039
78ce248f
MF		 1040/**
1041 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1042 * @md: the efi_memory_desc_t * iterator
1043 *
1044 * Once the loop finishes @md must not be accessed.
1045 */
1046#define for_each_efi_memory_desc(md) \
884f4f66 1047 for_each_efi_memory_desc_in_map(&efi.memmap, md)
78ce248f 1048
98d2a6ca
LE		 1049/*
1050 * Format an EFI memory descriptor's type and attributes to a user-provided
1051 * character buffer, as per snprintf(), and return the buffer.
1052 */
1053char * __init efi_md_typeattr_format(char *buf, size_t size,
1054 const efi_memory_desc_t *md);
1055
4ad036c8
DH		 1056struct key;
1057extern int __init parse_efi_signature_list(const void *data, size_t size,
1058 struct key *keyring);
1059
1da177e4
LT		 1060/**
1061 * efi_range_is_wc - check the WC bit on an address range
1062 * @start: starting kvirt address
1063 * @len: length of range
1064 *
1065 * Consult the EFI memory map and make sure it's ok to set this range WC.
1066 * Returns true or false.
1067 */
1068static inline int efi_range_is_wc(unsigned long start, unsigned long len)
1069{
986a80d5 1070 unsigned long i;
1da177e4
LT		 1071
1072 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
1073 unsigned long paddr = __pa(start + i);
1074 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
1075 return 0;
1076 }
1077 /* The range checked out */
1078 return 1;
1079}
1080
1081#ifdef CONFIG_EFI_PCDP
1082extern int __init efi_setup_pcdp_console(char *);
1083#endif
1084
1085/*
83e68189
MF		 1086 * We play games with efi_enabled so that the compiler will, if
1087 * possible, remove EFI-related code altogether.
1da177e4 1088 */
83e68189 1089#define EFI_BOOT 0 /* Were we booted from EFI? */
83e68189
MF		 1090#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1091#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1092#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1093#define EFI_64BIT 5 /* Is the firmware 64-bit? */
9f27bc54
DK		 1094#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1095#define EFI_ARCH_1 7 /* First arch-specific bit */
fed6cefe 1096#define EFI_DBG 8 /* Print additional debug info at runtime */
a1041713 1097#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
8f0fd620 1098#define EFI_SECURE_BOOT 10 /* Are we in Secure Boot mode? */
02427020 1099#define EFI_MOKSBSTATE_DISABLED 11 /* Secure boot mode disabled in the MOK */
83e68189 1100
1da177e4 1101#ifdef CONFIG_EFI
3e909599
MF		 1102/*
1103 * Test whether the above EFI_* bits are enabled.
1104 */
1105static inline bool efi_enabled(int feature)
1106{
1107 return test_bit(feature, &efi.flags) != 0;
1108}
8562c99c 1109extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
1da177e4 1110#else
3e909599 1111static inline bool efi_enabled(int feature)
83e68189 1112{
3e909599 1113 return false;
83e68189 1114}
8562c99c
MF		 1115static inline void
1116efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
87615a34
MF		 1117
1118static inline bool
1119efi_capsule_pending(int *reset_type)
1120{
1121 return false;
1122}
1da177e4
LT		 1123#endif
1124
806b0351
MF		 1125extern int efi_status_to_err(efi_status_t status);
1126
1da177e4
LT		 1127/*
1128 * Variable Attributes
1129 */
1130#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1131#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1132#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
41b3254c
MG		 1133#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1134#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1135#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1136#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1137
1138#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1139 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1140 EFI_VARIABLE_RUNTIME_ACCESS | \
1141 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1142 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1143 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1144 EFI_VARIABLE_APPEND_WRITE)
e14ab23d
MF		 1145/*
1146 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1147 * not including trailing NUL
1148 */
ba7e34b1 1149#define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
e14ab23d 1150
e2527a7c
MF		 1151/*
1152 * The type of search to perform when calling boottime->locate_handle
1153 */
1154#define EFI_LOCATE_ALL_HANDLES 0
1155#define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1156#define EFI_LOCATE_BY_PROTOCOL 2
1157
1da177e4
LT		 1158/*
1159 * EFI Device Path information
1160 */
1161#define EFI_DEV_HW 0x01
1162#define EFI_DEV_PCI 1
1163#define EFI_DEV_PCCARD 2
1164#define EFI_DEV_MEM_MAPPED 3
1165#define EFI_DEV_VENDOR 4
1166#define EFI_DEV_CONTROLLER 5
1167#define EFI_DEV_ACPI 0x02
1168#define EFI_DEV_BASIC_ACPI 1
1169#define EFI_DEV_EXPANDED_ACPI 2
1170#define EFI_DEV_MSG 0x03
1171#define EFI_DEV_MSG_ATAPI 1
1172#define EFI_DEV_MSG_SCSI 2
1173#define EFI_DEV_MSG_FC 3
1174#define EFI_DEV_MSG_1394 4
1175#define EFI_DEV_MSG_USB 5
1176#define EFI_DEV_MSG_USB_CLASS 15
1177#define EFI_DEV_MSG_I20 6
1178#define EFI_DEV_MSG_MAC 11
1179#define EFI_DEV_MSG_IPV4 12
1180#define EFI_DEV_MSG_IPV6 13
1181#define EFI_DEV_MSG_INFINIBAND 9
1182#define EFI_DEV_MSG_UART 14
1183#define EFI_DEV_MSG_VENDOR 10
1184#define EFI_DEV_MEDIA 0x04
1185#define EFI_DEV_MEDIA_HARD_DRIVE 1
1186#define EFI_DEV_MEDIA_CDROM 2
1187#define EFI_DEV_MEDIA_VENDOR 3
1188#define EFI_DEV_MEDIA_FILE 4
1189#define EFI_DEV_MEDIA_PROTOCOL 5
1190#define EFI_DEV_BIOS_BOOT 0x05
1191#define EFI_DEV_END_PATH 0x7F
1192#define EFI_DEV_END_PATH2 0xFF
1193#define EFI_DEV_END_INSTANCE 0x01
1194#define EFI_DEV_END_ENTIRE 0xFF
1195
1196struct efi_generic_dev_path {
1197 u8 type;
1198 u8 sub_type;
1199 u16 length;
1200} __attribute ((packed));
1201
46cd4b75
LW		 1202struct efi_dev_path {
1203 u8 type; /* can be replaced with unnamed */
1204 u8 sub_type; /* struct efi_generic_dev_path; */
1205 u16 length; /* once we've moved to -std=c11 */
1206 union {
1207 struct {
1208 u32 hid;
1209 u32 uid;
1210 } acpi;
1211 struct {
1212 u8 fn;
1213 u8 dev;
1214 } pci;
1215 };
1216} __attribute ((packed));
1217
1218#if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER)
1219struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len);
1220#endif
1221
4a3575fd
HY		 1222static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1223{
1224 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1225 *addr &= PAGE_MASK;
1226}
1227
4fc756bd
MW		 1228/*
1229 * EFI Variable support.
1230 *
1231 * Different firmware drivers can expose their EFI-like variables using
1232 * the following.
1233 */
1234
1235struct efivar_operations {
1236 efi_get_variable_t *get_variable;
1237 efi_get_next_variable_t *get_next_variable;
1238 efi_set_variable_t *set_variable;
70d2a3cf 1239 efi_set_variable_t *set_variable_nonblocking;
a6e4d5a0 1240 efi_query_variable_store_t *query_variable_store;
4fc756bd
MW		 1241};
1242
1243struct efivars {
4fc756bd 1244 struct kset *kset;
605e70c7 1245 struct kobject *kobject;
4fc756bd
MW		 1246 const struct efivar_operations *ops;
1247};
1248
e14ab23d
MF		 1249/*
1250 * The maximum size of VariableName + Data = 1024
1251 * Therefore, it's reasonable to save that much
1252 * space in each part of the structure,
1253 * and we use a page for reading/writing.
1254 */
1255
a5d92ad3
MF		 1256#define EFI_VAR_NAME_LEN 1024
1257
e14ab23d 1258struct efi_variable {
a5d92ad3 1259 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
e14ab23d
MF		 1260 efi_guid_t VendorGuid;
1261 unsigned long DataSize;
1262 __u8 Data[1024];
1263 efi_status_t Status;
1264 __u32 Attributes;
1265} __attribute__((packed));
1266
1267struct efivar_entry {
1268 struct efi_variable var;
1269 struct list_head list;
1270 struct kobject kobj;
e0d59733
SA		 1271 bool scanning;
1272 bool deleting;
e14ab23d
MF		 1273};
1274
677703ce
MF		 1275struct efi_simple_text_output_protocol_32 {
1276 u32 reset;
1277 u32 output_string;
1278 u32 test_string;
1279};
1280
1281struct efi_simple_text_output_protocol_64 {
1282 u64 reset;
1283 u64 output_string;
1284 u64 test_string;
1285};
ed37ddff
RF		 1286
1287struct efi_simple_text_output_protocol {
1288 void *reset;
1289 efi_status_t (*output_string)(void *, void *);
1290 void *test_string;
1291};
1292
fc372064
AB		 1293#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1294#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1295#define PIXEL_BIT_MASK 2
1296#define PIXEL_BLT_ONLY 3
1297#define PIXEL_FORMAT_MAX 4
1298
1299struct efi_pixel_bitmask {
1300 u32 red_mask;
1301 u32 green_mask;
1302 u32 blue_mask;
1303 u32 reserved_mask;
1304};
1305
1306struct efi_graphics_output_mode_info {
1307 u32 version;
1308 u32 horizontal_resolution;
1309 u32 vertical_resolution;
1310 int pixel_format;
1311 struct efi_pixel_bitmask pixel_information;
1312 u32 pixels_per_scan_line;
1313} __packed;
1314
1315struct efi_graphics_output_protocol_mode_32 {
1316 u32 max_mode;
1317 u32 mode;
1318 u32 info;
1319 u32 size_of_info;
1320 u64 frame_buffer_base;
1321 u32 frame_buffer_size;
1322} __packed;
1323
1324struct efi_graphics_output_protocol_mode_64 {
1325 u32 max_mode;
1326 u32 mode;
1327 u64 info;
1328 u64 size_of_info;
1329 u64 frame_buffer_base;
1330 u64 frame_buffer_size;
1331} __packed;
1332
1333struct efi_graphics_output_protocol_mode {
1334 u32 max_mode;
1335 u32 mode;
1336 unsigned long info;
1337 unsigned long size_of_info;
1338 u64 frame_buffer_base;
1339 unsigned long frame_buffer_size;
1340} __packed;
1341
1342struct efi_graphics_output_protocol_32 {
1343 u32 query_mode;
1344 u32 set_mode;
1345 u32 blt;
1346 u32 mode;
1347};
1348
1349struct efi_graphics_output_protocol_64 {
1350 u64 query_mode;
1351 u64 set_mode;
1352 u64 blt;
1353 u64 mode;
1354};
1355
1356struct efi_graphics_output_protocol {
1357 unsigned long query_mode;
1358 unsigned long set_mode;
1359 unsigned long blt;
1360 struct efi_graphics_output_protocol_mode *mode;
1361};
1362
1363typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
1364 struct efi_graphics_output_protocol *, u32, unsigned long *,
1365 struct efi_graphics_output_mode_info **);
1366
04851772
MF		 1367extern struct list_head efivar_sysfs_list;
1368
1369static inline void
1370efivar_unregister(struct efivar_entry *var)
1371{
1372 kobject_put(&var->kobj);
1373}
1374
e14ab23d 1375int efivars_register(struct efivars *efivars,
4fc756bd 1376 const struct efivar_operations *ops,
e14ab23d
MF		 1377 struct kobject *kobject);
1378int efivars_unregister(struct efivars *efivars);
1379struct kobject *efivars_kobject(void);
1380
1381int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1cfd6316 1382 void *data, bool duplicates, struct list_head *head);
e14ab23d 1383
21b3ddd3
SC		 1384int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1385int efivar_entry_remove(struct efivar_entry *entry);
e14ab23d
MF		 1386
1387int __efivar_entry_delete(struct efivar_entry *entry);
1388int efivar_entry_delete(struct efivar_entry *entry);
1389
e14ab23d 1390int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
8a415b8c
MF		 1391int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1392 unsigned long *size, void *data);
e14ab23d
MF		 1393int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1394 unsigned long *size, void *data);
1395int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1396 unsigned long size, void *data, struct list_head *head);
1397int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1398 unsigned long *size, void *data, bool *set);
1399int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1400 bool block, unsigned long size, void *data);
1401
21b3ddd3 1402int efivar_entry_iter_begin(void);
e14ab23d
MF		 1403void efivar_entry_iter_end(void);
1404
1405int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1406 struct list_head *head, void *data,
1407 struct efivar_entry **prev);
1408int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1409 struct list_head *head, void *data);
1410
1411struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1412 struct list_head *head, bool remove);
1413
8282f5d9
PJ		 1414bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1415 unsigned long data_size);
ed8b0de5
PJ		 1416bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1417 size_t len);
e14ab23d 1418
a9499fa7 1419extern struct work_struct efivar_work;
04851772
MF		 1420void efivar_run_worker(void);
1421
a9499fa7 1422#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
e14ab23d 1423int efivars_sysfs_init(void);
4fc756bd 1424
e0d59733
SA		 1425#define EFIVARS_DATA_SIZE_MAX 1024
1426
4fc756bd 1427#endif /* CONFIG_EFI_VARS */
f0133f3c
MF		 1428extern bool efi_capsule_pending(int *reset_type);
1429
1430extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1431 size_t size, int *reset);
1432
1433extern int efi_capsule_update(efi_capsule_header_t *capsule,
1434 struct page **pages);
4fc756bd 1435
926172d4
DY		 1436#ifdef CONFIG_EFI_RUNTIME_MAP
1437int efi_runtime_map_init(struct kobject *);
6a2c20e7
VG		 1438int efi_get_runtime_map_size(void);
1439int efi_get_runtime_map_desc_size(void);
1440int efi_runtime_map_copy(void *buf, size_t bufsz);
926172d4
DY		 1441#else
1442static inline int efi_runtime_map_init(struct kobject *kobj)
1443{
1444 return 0;
1445}
1446
6a2c20e7
VG		 1447static inline int efi_get_runtime_map_size(void)
1448{
1449 return 0;
1450}
1451
1452static inline int efi_get_runtime_map_desc_size(void)
1453{
1454 return 0;
1455}
1456
1457static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1458{
1459 return 0;
1460}
1461
926172d4
DY		 1462#endif
1463
bd669475
AB		 1464/* prototypes shared between arch specific and generic stub code */
1465
1466#define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1467#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1468
1469void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1470
1471void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1472 unsigned long addr);
1473
1474char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1475 efi_loaded_image_t *image, int *cmd_line_len);
1476
1477efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
dadb57ab 1478 struct efi_boot_memmap *map);
bd669475
AB		 1479
1480efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1481 unsigned long size, unsigned long align,
1482 unsigned long *addr);
1483
1484efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1485 unsigned long size, unsigned long align,
1486 unsigned long *addr, unsigned long max);
1487
1488efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1489 unsigned long *image_addr,
1490 unsigned long image_size,
1491 unsigned long alloc_size,
1492 unsigned long preferred_addr,
1493 unsigned long alignment);
1494
1495efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1496 efi_loaded_image_t *image,
1497 char *cmd_line, char *option_string,
1498 unsigned long max_addr,
1499 unsigned long *load_addr,
1500 unsigned long *load_size);
1501
5a17dae4
MF		 1502efi_status_t efi_parse_options(char *cmdline);
1503
2c23b73c
AB		 1504efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
1505 struct screen_info *si, efi_guid_t *proto,
1506 unsigned long size);
1507
b2e0a54a 1508bool efi_runtime_disabled(void);
80e75596
AT		 1509extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
1510
1511/*
1512 * Arch code can implement the following three template macros, avoiding
1513 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1514 *
1515 * * arch_efi_call_virt_setup()
1516 *
1517 * Sets up the environment for the call (e.g. switching page tables,
1518 * allowing kernel-mode use of floating point, if required).
1519 *
1520 * * arch_efi_call_virt()
1521 *
1522 * Performs the call. The last expression in the macro must be the call
1523 * itself, allowing the logic to be shared by the void and non-void
1524 * cases.
1525 *
1526 * * arch_efi_call_virt_teardown()
1527 *
1528 * Restores the usual kernel environment once the call has returned.
1529 */
1530
1531#define efi_call_virt_pointer(p, f, args...) \
1532({ \
1533 efi_status_t __s; \
1534 unsigned long __flags; \
1535 \
1536 arch_efi_call_virt_setup(); \
1537 \
1538 local_save_flags(__flags); \
1539 __s = arch_efi_call_virt(p, f, args); \
1540 efi_call_virt_check_flags(__flags, __stringify(f)); \
1541 \
1542 arch_efi_call_virt_teardown(); \
1543 \
1544 __s; \
1545})
1546
1547#define __efi_call_virt_pointer(p, f, args...) \
1548({ \
1549 unsigned long __flags; \
1550 \
1551 arch_efi_call_virt_setup(); \
1552 \
1553 local_save_flags(__flags); \
1554 arch_efi_call_virt(p, f, args); \
1555 efi_call_virt_check_flags(__flags, __stringify(f)); \
1556 \
1557 arch_efi_call_virt_teardown(); \
1558})
1559
fc07716b
JH		 1560typedef efi_status_t (*efi_exit_boot_map_processing)(
1561 efi_system_table_t *sys_table_arg,
1562 struct efi_boot_memmap *map,
1563 void *priv);
1564
1565efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table,
1566 void *handle,
1567 struct efi_boot_memmap *map,
1568 void *priv,
1569 efi_exit_boot_map_processing priv_func);
63625988
AB		 1570
1571struct linux_efi_random_seed {
1572 u32 size;
1573 u8 bits[];
1574};
1575
1da177e4 1576#endif /* _LINUX_EFI_H */
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