]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blame - include/linux/efi.h
projects / mirror_ubuntu-bionic-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ACPI: fix acpi_find_child_device() invocation in acpi_preset_companion()
[mirror_ubuntu-bionic-kernel.git] / include / linux / efi.h
CommitLineData
b2441318 1/* SPDX-License-Identifier: GPL-2.0 */
1da177e4
LT		 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>
4a3575fd 22#include <linux/pfn.h>
5ee9c198 23#include <linux/pstore.h>
60863c0d 24#include <linux/range.h>
8562c99c 25#include <linux/reboot.h>
ba7e34b1 26#include <linux/uuid.h>
2c23b73c 27#include <linux/screen_info.h>
1da177e4
LT		 28
29#include <asm/page.h>
1da177e4
LT		 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)))
5d9db883
MG		 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)))
1da177e4 41#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
dce48e35 42#define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
5d9db883 43#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
1da177e4
LT		 44
45typedef unsigned long efi_status_t;
46typedef u8 efi_bool_t;
47typedef u16 efi_char16_t; /* UNICODE character */
ed37ddff
RF		 48typedef u64 efi_physical_addr_t;
49typedef void *efi_handle_t;
1da177e4 50
c0020756 51typedef guid_t efi_guid_t;
1da177e4
LT		 52
53#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
c0020756 54 GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
1da177e4
LT		 55
56/*
57 * Generic EFI table header
58 */
59typedef struct {
60 u64 signature;
61 u32 revision;
62 u32 headersize;
63 u32 crc32;
64 u32 reserved;
65} efi_table_hdr_t;
66
67/*
68 * Memory map descriptor:
69 */
70
71/* Memory types: */
72#define EFI_RESERVED_TYPE 0
73#define EFI_LOADER_CODE 1
74#define EFI_LOADER_DATA 2
75#define EFI_BOOT_SERVICES_CODE 3
76#define EFI_BOOT_SERVICES_DATA 4
77#define EFI_RUNTIME_SERVICES_CODE 5
78#define EFI_RUNTIME_SERVICES_DATA 6
79#define EFI_CONVENTIONAL_MEMORY 7
80#define EFI_UNUSABLE_MEMORY 8
81#define EFI_ACPI_RECLAIM_MEMORY 9
82#define EFI_ACPI_MEMORY_NVS 10
83#define EFI_MEMORY_MAPPED_IO 11
84#define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
85#define EFI_PAL_CODE 13
ad5fb870
DW		 86#define EFI_PERSISTENT_MEMORY 14
87#define EFI_MAX_MEMORY_TYPE 15
1da177e4
LT		 88
89/* Attribute values: */
90#define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
91#define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
92#define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
93#define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
9c97e0bd 94#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
1da177e4
LT		 95#define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
96#define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
97#define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
c016ca08 98#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
b05b9f5f
TL		 99#define EFI_MEMORY_MORE_RELIABLE \
100 ((u64)0x0000000000010000ULL) /* higher reliability */
87db73ae 101#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
1da177e4
LT		 102#define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
103#define EFI_MEMORY_DESCRIPTOR_VERSION 1
104
105#define EFI_PAGE_SHIFT 12
ed37ddff 106#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
0100a3e6 107#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
1da177e4 108
1da177e4
LT		 109typedef struct {
110 u32 type;
111 u32 pad;
112 u64 phys_addr;
113 u64 virt_addr;
114 u64 num_pages;
115 u64 attribute;
1da177e4
LT		 116} efi_memory_desc_t;
117
3b370237
MG		 118typedef struct {
119 efi_guid_t guid;
120 u32 headersize;
121 u32 flags;
122 u32 imagesize;
123} efi_capsule_header_t;
124
dadb57ab
JH		 125struct efi_boot_memmap {
126 efi_memory_desc_t **map;
127 unsigned long *map_size;
128 unsigned long *desc_size;
129 u32 *desc_ver;
130 unsigned long *key_ptr;
131 unsigned long *buff_size;
132};
133
f0133f3c
MF		 134/*
135 * EFI capsule flags
136 */
137#define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
138#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
139#define EFI_CAPSULE_INITIATE_RESET 0x00040000
140
3fabd628
AB		 141struct capsule_info {
142 efi_capsule_header_t header;
f24c4d47 143 efi_capsule_header_t *capsule;
3fabd628
AB		 144 int reset_type;
145 long index;
146 size_t count;
147 size_t total_size;
f24c4d47
AB		 148 struct page **pages;
149 phys_addr_t *phys;
3fabd628
AB		 150 size_t page_bytes_remain;
151};
152
153int __efi_capsule_setup_info(struct capsule_info *cap_info);
154
bb05e4ba
MF		 155/*
156 * Allocation types for calls to boottime->allocate_pages.
157 */
158#define EFI_ALLOCATE_ANY_PAGES 0
159#define EFI_ALLOCATE_MAX_ADDRESS 1
160#define EFI_ALLOCATE_ADDRESS 2
161#define EFI_MAX_ALLOCATE_TYPE 3
162
e088a4ad 163typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
1da177e4
LT		 164
165/*
166 * Types and defines for Time Services
167 */
168#define EFI_TIME_ADJUST_DAYLIGHT 0x1
169#define EFI_TIME_IN_DAYLIGHT 0x2
170#define EFI_UNSPECIFIED_TIMEZONE 0x07ff
171
172typedef struct {
173 u16 year;
174 u8 month;
175 u8 day;
176 u8 hour;
177 u8 minute;
178 u8 second;
179 u8 pad1;
180 u32 nanosecond;
181 s16 timezone;
182 u8 daylight;
183 u8 pad2;
184} efi_time_t;
185
186typedef struct {
187 u32 resolution;
188 u32 accuracy;
189 u8 sets_to_zero;
190} efi_time_cap_t;
191
677703ce
MF		 192typedef struct {
193 efi_table_hdr_t hdr;
194 u32 raise_tpl;
195 u32 restore_tpl;
196 u32 allocate_pages;
197 u32 free_pages;
198 u32 get_memory_map;
199 u32 allocate_pool;
200 u32 free_pool;
201 u32 create_event;
202 u32 set_timer;
203 u32 wait_for_event;
204 u32 signal_event;
205 u32 close_event;
206 u32 check_event;
207 u32 install_protocol_interface;
208 u32 reinstall_protocol_interface;
209 u32 uninstall_protocol_interface;
210 u32 handle_protocol;
211 u32 __reserved;
212 u32 register_protocol_notify;
213 u32 locate_handle;
214 u32 locate_device_path;
215 u32 install_configuration_table;
216 u32 load_image;
217 u32 start_image;
218 u32 exit;
219 u32 unload_image;
220 u32 exit_boot_services;
221 u32 get_next_monotonic_count;
222 u32 stall;
223 u32 set_watchdog_timer;
224 u32 connect_controller;
225 u32 disconnect_controller;
226 u32 open_protocol;
227 u32 close_protocol;
228 u32 open_protocol_information;
229 u32 protocols_per_handle;
230 u32 locate_handle_buffer;
231 u32 locate_protocol;
232 u32 install_multiple_protocol_interfaces;
233 u32 uninstall_multiple_protocol_interfaces;
234 u32 calculate_crc32;
235 u32 copy_mem;
236 u32 set_mem;
237 u32 create_event_ex;
238} __packed efi_boot_services_32_t;
239
240typedef struct {
241 efi_table_hdr_t hdr;
242 u64 raise_tpl;
243 u64 restore_tpl;
244 u64 allocate_pages;
245 u64 free_pages;
246 u64 get_memory_map;
247 u64 allocate_pool;
248 u64 free_pool;
249 u64 create_event;
250 u64 set_timer;
251 u64 wait_for_event;
252 u64 signal_event;
253 u64 close_event;
254 u64 check_event;
255 u64 install_protocol_interface;
256 u64 reinstall_protocol_interface;
257 u64 uninstall_protocol_interface;
258 u64 handle_protocol;
259 u64 __reserved;
260 u64 register_protocol_notify;
261 u64 locate_handle;
262 u64 locate_device_path;
263 u64 install_configuration_table;
264 u64 load_image;
265 u64 start_image;
266 u64 exit;
267 u64 unload_image;
268 u64 exit_boot_services;
269 u64 get_next_monotonic_count;
270 u64 stall;
271 u64 set_watchdog_timer;
272 u64 connect_controller;
273 u64 disconnect_controller;
274 u64 open_protocol;
275 u64 close_protocol;
276 u64 open_protocol_information;
277 u64 protocols_per_handle;
278 u64 locate_handle_buffer;
279 u64 locate_protocol;
280 u64 install_multiple_protocol_interfaces;
281 u64 uninstall_multiple_protocol_interfaces;
282 u64 calculate_crc32;
283 u64 copy_mem;
284 u64 set_mem;
285 u64 create_event_ex;
286} __packed efi_boot_services_64_t;
287
f30ca6ba
MF		 288/*
289 * EFI Boot Services table
290 */
291typedef struct {
292 efi_table_hdr_t hdr;
293 void *raise_tpl;
294 void *restore_tpl;
ed37ddff
RF		 295 efi_status_t (*allocate_pages)(int, int, unsigned long,
296 efi_physical_addr_t *);
297 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
298 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
299 unsigned long *, u32 *);
300 efi_status_t (*allocate_pool)(int, unsigned long, void **);
301 efi_status_t (*free_pool)(void *);
f30ca6ba
MF		 302 void *create_event;
303 void *set_timer;
304 void *wait_for_event;
305 void *signal_event;
306 void *close_event;
307 void *check_event;
308 void *install_protocol_interface;
309 void *reinstall_protocol_interface;
310 void *uninstall_protocol_interface;
ed37ddff 311 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
f30ca6ba
MF		 312 void *__reserved;
313 void *register_protocol_notify;
fc372064
AB		 314 efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
315 unsigned long *, efi_handle_t *);
f30ca6ba 316 void *locate_device_path;
801820be 317 efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
f30ca6ba
MF		 318 void *load_image;
319 void *start_image;
320 void *exit;
321 void *unload_image;
ed37ddff 322 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
f30ca6ba
MF		 323 void *get_next_monotonic_count;
324 void *stall;
325 void *set_watchdog_timer;
326 void *connect_controller;
327 void *disconnect_controller;
328 void *open_protocol;
329 void *close_protocol;
330 void *open_protocol_information;
331 void *protocols_per_handle;
332 void *locate_handle_buffer;
e4fbf476 333 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
f30ca6ba
MF		 334 void *install_multiple_protocol_interfaces;
335 void *uninstall_multiple_protocol_interfaces;
336 void *calculate_crc32;
337 void *copy_mem;
338 void *set_mem;
339 void *create_event_ex;
340} efi_boot_services_t;
341
dd5fc854
MG		 342typedef enum {
343 EfiPciIoWidthUint8,
344 EfiPciIoWidthUint16,
345 EfiPciIoWidthUint32,
346 EfiPciIoWidthUint64,
347 EfiPciIoWidthFifoUint8,
348 EfiPciIoWidthFifoUint16,
349 EfiPciIoWidthFifoUint32,
350 EfiPciIoWidthFifoUint64,
351 EfiPciIoWidthFillUint8,
352 EfiPciIoWidthFillUint16,
353 EfiPciIoWidthFillUint32,
354 EfiPciIoWidthFillUint64,
355 EfiPciIoWidthMaximum
356} EFI_PCI_IO_PROTOCOL_WIDTH;
357
358typedef enum {
359 EfiPciIoAttributeOperationGet,
360 EfiPciIoAttributeOperationSet,
361 EfiPciIoAttributeOperationEnable,
362 EfiPciIoAttributeOperationDisable,
363 EfiPciIoAttributeOperationSupported,
364 EfiPciIoAttributeOperationMaximum
365} EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
366
677703ce
MF		 367typedef struct {
368 u32 read;
369 u32 write;
370} efi_pci_io_protocol_access_32_t;
371
372typedef struct {
373 u64 read;
374 u64 write;
375} efi_pci_io_protocol_access_64_t;
dd5fc854
MG		 376
377typedef struct {
378 void *read;
379 void *write;
380} efi_pci_io_protocol_access_t;
381
677703ce
MF		 382typedef struct {
383 u32 poll_mem;
384 u32 poll_io;
385 efi_pci_io_protocol_access_32_t mem;
386 efi_pci_io_protocol_access_32_t io;
387 efi_pci_io_protocol_access_32_t pci;
388 u32 copy_mem;
389 u32 map;
390 u32 unmap;
391 u32 allocate_buffer;
392 u32 free_buffer;
393 u32 flush;
394 u32 get_location;
395 u32 attributes;
396 u32 get_bar_attributes;
397 u32 set_bar_attributes;
a2c46d4f
AB		 398 u64 romsize;
399 u32 romimage;
677703ce
MF		 400} efi_pci_io_protocol_32;
401
402typedef struct {
403 u64 poll_mem;
404 u64 poll_io;
405 efi_pci_io_protocol_access_64_t mem;
406 efi_pci_io_protocol_access_64_t io;
407 efi_pci_io_protocol_access_64_t pci;
408 u64 copy_mem;
409 u64 map;
410 u64 unmap;
411 u64 allocate_buffer;
412 u64 free_buffer;
413 u64 flush;
414 u64 get_location;
415 u64 attributes;
416 u64 get_bar_attributes;
417 u64 set_bar_attributes;
a2c46d4f
AB		 418 u64 romsize;
419 u64 romimage;
677703ce
MF		 420} efi_pci_io_protocol_64;
421
dd5fc854
MG		 422typedef struct {
423 void *poll_mem;
424 void *poll_io;
425 efi_pci_io_protocol_access_t mem;
426 efi_pci_io_protocol_access_t io;
427 efi_pci_io_protocol_access_t pci;
428 void *copy_mem;
429 void *map;
430 void *unmap;
431 void *allocate_buffer;
432 void *free_buffer;
433 void *flush;
434 void *get_location;
435 void *attributes;
436 void *get_bar_attributes;
437 void *set_bar_attributes;
438 uint64_t romsize;
439 void *romimage;
440} efi_pci_io_protocol;
441
442#define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
443#define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
444#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
445#define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
446#define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
447#define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
448#define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
449#define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
450#define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
451#define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
452#define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
453#define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
454#define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
455#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
456#define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
457#define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
458#define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
459#define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
460#define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
461
58c5475a
LW		 462typedef struct {
463 u32 version;
464 u32 get;
465 u32 set;
466 u32 del;
467 u32 get_all;
468} apple_properties_protocol_32_t;
469
470typedef struct {
471 u64 version;
472 u64 get;
473 u64 set;
474 u64 del;
475 u64 get_all;
476} apple_properties_protocol_64_t;
477
1da177e4
LT		 478/*
479 * Types and defines for EFI ResetSystem
480 */
481#define EFI_RESET_COLD 0
482#define EFI_RESET_WARM 1
483#define EFI_RESET_SHUTDOWN 2
484
485/*
486 * EFI Runtime Services table
487 */
488#define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
489#define EFI_RUNTIME_SERVICES_REVISION 0x00010000
490
677703ce
MF		 491typedef struct {
492 efi_table_hdr_t hdr;
493 u32 get_time;
494 u32 set_time;
495 u32 get_wakeup_time;
496 u32 set_wakeup_time;
497 u32 set_virtual_address_map;
498 u32 convert_pointer;
499 u32 get_variable;
500 u32 get_next_variable;
501 u32 set_variable;
502 u32 get_next_high_mono_count;
503 u32 reset_system;
504 u32 update_capsule;
505 u32 query_capsule_caps;
506 u32 query_variable_info;
507} efi_runtime_services_32_t;
508
509typedef struct {
510 efi_table_hdr_t hdr;
511 u64 get_time;
512 u64 set_time;
513 u64 get_wakeup_time;
514 u64 set_wakeup_time;
515 u64 set_virtual_address_map;
516 u64 convert_pointer;
517 u64 get_variable;
518 u64 get_next_variable;
519 u64 set_variable;
520 u64 get_next_high_mono_count;
521 u64 reset_system;
522 u64 update_capsule;
523 u64 query_capsule_caps;
524 u64 query_variable_info;
525} efi_runtime_services_64_t;
526
1da177e4
LT		 527typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
528typedef efi_status_t efi_set_time_t (efi_time_t *tm);
529typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
530 efi_time_t *tm);
531typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
532typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
533 unsigned long *data_size, void *data);
534typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
535 efi_guid_t *vendor);
536typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
f7a2d73f 537 u32 attr, unsigned long data_size,
1da177e4
LT		 538 void *data);
539typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
540typedef void efi_reset_system_t (int reset_type, efi_status_t status,
541 unsigned long data_size, efi_char16_t *data);
542typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
543 unsigned long descriptor_size,
544 u32 descriptor_version,
545 efi_memory_desc_t *virtual_map);
3b370237
MG		 546typedef efi_status_t efi_query_variable_info_t(u32 attr,
547 u64 *storage_space,
548 u64 *remaining_space,
549 u64 *max_variable_size);
550typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
551 unsigned long count,
552 unsigned long sg_list);
553typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
554 unsigned long count,
555 u64 *max_size,
556 int *reset_type);
ca0e30dc
AB		 557typedef efi_status_t efi_query_variable_store_t(u32 attributes,
558 unsigned long size,
559 bool nonblocking);
1da177e4 560
c4c39c70
AB		 561typedef struct {
562 efi_table_hdr_t hdr;
563 efi_get_time_t *get_time;
564 efi_set_time_t *set_time;
565 efi_get_wakeup_time_t *get_wakeup_time;
566 efi_set_wakeup_time_t *set_wakeup_time;
567 efi_set_virtual_address_map_t *set_virtual_address_map;
568 void *convert_pointer;
569 efi_get_variable_t *get_variable;
570 efi_get_next_variable_t *get_next_variable;
571 efi_set_variable_t *set_variable;
572 efi_get_next_high_mono_count_t *get_next_high_mono_count;
573 efi_reset_system_t *reset_system;
574 efi_update_capsule_t *update_capsule;
575 efi_query_capsule_caps_t *query_capsule_caps;
576 efi_query_variable_info_t *query_variable_info;
577} efi_runtime_services_t;
578
022ee6c5
AB		 579void efi_native_runtime_setup(void);
580
1da177e4 581/*
54fd11fe
PJ		 582 * EFI Configuration Table and GUID definitions
583 *
7fb2b43c
IM		 584 * These are all defined in a single line to make them easier to
585 * grep for and to see them at a glance - while still having a
586 * similar structure to the definitions in the spec.
587 *
588 * Here's how they are structured:
54fd11fe
PJ		 589 *
590 * GUID: 12345678-1234-1234-1234-123456789012
591 * Spec:
592 * #define EFI_SOME_PROTOCOL_GUID \
593 * {0x12345678,0x1234,0x1234,\
594 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}}
595 * Here:
7fb2b43c
IM		 596 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12)
597 * ^ tabs ^extra space
598 *
599 * Note that the 'extra space' separates the values at the same place
600 * where the UEFI SPEC breaks the line.
1da177e4 601 */
7fb2b43c
IM		 602#define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
603#define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
604#define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
605#define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
606#define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
607#define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
608#define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
609#define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
610#define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
611#define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
612#define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
613#define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
614#define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
615#define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
616#define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
617#define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
618#define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
619#define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
620#define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
621#define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
622#define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
623#define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
568bc4e8 624#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
7fb2b43c
IM		 625#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
626#define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
58c5475a 627#define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
fc372064 628
e58910cd
JB		 629#define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f)
630#define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23)
631
2b1afd9f
DH		 632#define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28)
633#define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72)
634#define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed)
635
801820be
AB		 636/*
637 * This GUID is used to pass to the kernel proper the struct screen_info
638 * structure that was populated by the stub based on the GOP protocol instance
639 * associated with ConOut
640 */
7fb2b43c
IM		 641#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
642#define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
63625988 643#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
06f7d4a1 644
1adbfa35
OJ		 645typedef struct {
646 efi_guid_t guid;
647 u64 table;
648} efi_config_table_64_t;
649
650typedef struct {
651 efi_guid_t guid;
652 u32 table;
653} efi_config_table_32_t;
654
1da177e4
LT		 655typedef struct {
656 efi_guid_t guid;
657 unsigned long table;
658} efi_config_table_t;
659
272686bf
LL		 660typedef struct {
661 efi_guid_t guid;
662 const char *name;
663 unsigned long *ptr;
664} efi_config_table_type_t;
665
1da177e4 666#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
1da177e4 667
3b370237
MG		 668#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
669#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
670#define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
671#define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
672#define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
673#define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
674
1adbfa35
OJ		 675typedef struct {
676 efi_table_hdr_t hdr;
677 u64 fw_vendor; /* physical addr of CHAR16 vendor string */
678 u32 fw_revision;
679 u32 __pad1;
680 u64 con_in_handle;
681 u64 con_in;
682 u64 con_out_handle;
683 u64 con_out;
684 u64 stderr_handle;
685 u64 stderr;
686 u64 runtime;
687 u64 boottime;
688 u32 nr_tables;
689 u32 __pad2;
690 u64 tables;
691} efi_system_table_64_t;
692
693typedef struct {
694 efi_table_hdr_t hdr;
695 u32 fw_vendor; /* physical addr of CHAR16 vendor string */
696 u32 fw_revision;
697 u32 con_in_handle;
698 u32 con_in;
699 u32 con_out_handle;
700 u32 con_out;
701 u32 stderr_handle;
702 u32 stderr;
703 u32 runtime;
704 u32 boottime;
705 u32 nr_tables;
706 u32 tables;
707} efi_system_table_32_t;
708
1da177e4
LT		 709typedef struct {
710 efi_table_hdr_t hdr;
711 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
712 u32 fw_revision;
713 unsigned long con_in_handle;
714 unsigned long con_in;
715 unsigned long con_out_handle;
716 unsigned long con_out;
717 unsigned long stderr_handle;
718 unsigned long stderr;
719 efi_runtime_services_t *runtime;
f30ca6ba 720 efi_boot_services_t *boottime;
1da177e4
LT		 721 unsigned long nr_tables;
722 unsigned long tables;
723} efi_system_table_t;
724
9479c7ce
MF		 725/*
726 * Architecture independent structure for describing a memory map for the
727 * benefit of efi_memmap_init_early(), saving us the need to pass four
728 * parameters.
729 */
730struct efi_memory_map_data {
731 phys_addr_t phys_map;
732 unsigned long size;
733 unsigned long desc_version;
734 unsigned long desc_size;
735};
736
1da177e4 737struct efi_memory_map {
44511fb9 738 phys_addr_t phys_map;
7ae65fd3
MT		 739 void *map;
740 void *map_end;
1da177e4
LT		 741 int nr_map;
742 unsigned long desc_version;
7ae65fd3 743 unsigned long desc_size;
dca0f971 744 bool late;
1da177e4
LT		 745};
746
60863c0d
MF		 747struct efi_mem_range {
748 struct range range;
749 u64 attribute;
1da177e4
LT		 750};
751
0302f71c
MS		 752struct efi_fdt_params {
753 u64 system_table;
754 u64 mmap;
755 u32 mmap_size;
756 u32 desc_size;
757 u32 desc_ver;
758};
759
677703ce
MF		 760typedef struct {
761 u32 revision;
762 u32 parent_handle;
763 u32 system_table;
764 u32 device_handle;
765 u32 file_path;
766 u32 reserved;
767 u32 load_options_size;
768 u32 load_options;
769 u32 image_base;
770 __aligned_u64 image_size;
771 unsigned int image_code_type;
772 unsigned int image_data_type;
773 unsigned long unload;
774} efi_loaded_image_32_t;
775
776typedef struct {
777 u32 revision;
778 u64 parent_handle;
779 u64 system_table;
780 u64 device_handle;
781 u64 file_path;
782 u64 reserved;
783 u32 load_options_size;
784 u64 load_options;
785 u64 image_base;
786 __aligned_u64 image_size;
787 unsigned int image_code_type;
788 unsigned int image_data_type;
789 unsigned long unload;
790} efi_loaded_image_64_t;
791
8e84f345
MF		 792typedef struct {
793 u32 revision;
794 void *parent_handle;
795 efi_system_table_t *system_table;
796 void *device_handle;
797 void *file_path;
798 void *reserved;
799 u32 load_options_size;
800 void *load_options;
801 void *image_base;
802 __aligned_u64 image_size;
803 unsigned int image_code_type;
804 unsigned int image_data_type;
805 unsigned long unload;
806} efi_loaded_image_t;
807
55839d51
MF		 808
809typedef struct {
810 u64 size;
811 u64 file_size;
812 u64 phys_size;
813 efi_time_t create_time;
814 efi_time_t last_access_time;
815 efi_time_t modification_time;
816 __aligned_u64 attribute;
817 efi_char16_t filename[1];
818} efi_file_info_t;
819
677703ce
MF		 820typedef struct {
821 u64 revision;
822 u32 open;
823 u32 close;
824 u32 delete;
825 u32 read;
826 u32 write;
827 u32 get_position;
828 u32 set_position;
829 u32 get_info;
830 u32 set_info;
831 u32 flush;
832} efi_file_handle_32_t;
833
834typedef struct {
835 u64 revision;
836 u64 open;
837 u64 close;
838 u64 delete;
839 u64 read;
840 u64 write;
841 u64 get_position;
842 u64 set_position;
843 u64 get_info;
844 u64 set_info;
845 u64 flush;
846} efi_file_handle_64_t;
847
ed37ddff 848typedef struct _efi_file_handle {
55839d51 849 u64 revision;
ed37ddff
RF		 850 efi_status_t (*open)(struct _efi_file_handle *,
851 struct _efi_file_handle **,
852 efi_char16_t *, u64, u64);
853 efi_status_t (*close)(struct _efi_file_handle *);
55839d51 854 void *delete;
ed37ddff
RF		 855 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
856 void *);
55839d51
MF		 857 void *write;
858 void *get_position;
859 void *set_position;
ed37ddff
RF		 860 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
861 unsigned long *, void *);
55839d51
MF		 862 void *set_info;
863 void *flush;
864} efi_file_handle_t;
865
ed37ddff
RF		 866typedef struct _efi_file_io_interface {
867 u64 revision;
868 int (*open_volume)(struct _efi_file_io_interface *,
869 efi_file_handle_t **);
870} efi_file_io_interface_t;
871
55839d51
MF		 872#define EFI_FILE_MODE_READ 0x0000000000000001
873#define EFI_FILE_MODE_WRITE 0x0000000000000002
874#define EFI_FILE_MODE_CREATE 0x8000000000000000
875
bf924863
AB		 876typedef struct {
877 u32 version;
878 u32 length;
879 u64 memory_protection_attribute;
880} efi_properties_table_t;
881
882#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
883#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
884
b2c99e3c
BH		 885#define EFI_INVALID_TABLE_ADDR (~0UL)
886
a604af07
AB		 887typedef struct {
888 u32 version;
889 u32 num_entries;
890 u32 desc_size;
891 u32 reserved;
892 efi_memory_desc_t entry[0];
893} efi_memory_attributes_table_t;
894
2b1afd9f
DH		 895typedef struct {
896 efi_guid_t signature_owner;
897 u8 signature_data[];
898} efi_signature_data_t;
899
900typedef struct {
901 efi_guid_t signature_type;
902 u32 signature_list_size;
903 u32 signature_header_size;
904 u32 signature_size;
905 u8 signature_header[];
906 /* efi_signature_data_t signatures[][] */
907} efi_signature_list_t;
908
909typedef u8 efi_sha256_hash_t[32];
910
911typedef struct {
912 efi_sha256_hash_t to_be_signed_hash;
913 efi_time_t time_of_revocation;
914} efi_cert_x509_sha256_t;
915
1da177e4
LT		 916/*
917 * All runtime access to EFI goes through this structure:
918 */
919extern struct efi {
920 efi_system_table_t *systab; /* EFI system table */
3b370237 921 unsigned int runtime_version; /* Runtime services version */
b2c99e3c
BH		 922 unsigned long mps; /* MPS table */
923 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
924 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
e1ccbbc9
AB		 925 unsigned long smbios; /* SMBIOS table (32 bit entry point) */
926 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
b2c99e3c
BH		 927 unsigned long sal_systab; /* SAL system table */
928 unsigned long boot_info; /* boot info table */
929 unsigned long hcdp; /* HCDP table */
930 unsigned long uga; /* UGA table */
a50f70b1 931 unsigned long uv_systab; /* UV system table */
a0998eb1
DY		 932 unsigned long fw_vendor; /* fw_vendor */
933 unsigned long runtime; /* runtime table */
934 unsigned long config_table; /* config tables */
0bb54905 935 unsigned long esrt; /* ESRT table */
bf924863 936 unsigned long properties_table; /* properties table */
a604af07 937 unsigned long mem_attr_table; /* memory attributes table */
63625988 938 unsigned long rng_seed; /* UEFI firmware random seed */
1da177e4
LT		 939 efi_get_time_t *get_time;
940 efi_set_time_t *set_time;
941 efi_get_wakeup_time_t *get_wakeup_time;
942 efi_set_wakeup_time_t *set_wakeup_time;
943 efi_get_variable_t *get_variable;
944 efi_get_next_variable_t *get_next_variable;
945 efi_set_variable_t *set_variable;
70d2a3cf 946 efi_set_variable_t *set_variable_nonblocking;
3b370237 947 efi_query_variable_info_t *query_variable_info;
d3cac1f8 948 efi_query_variable_info_t *query_variable_info_nonblocking;
3b370237
MG		 949 efi_update_capsule_t *update_capsule;
950 efi_query_capsule_caps_t *query_capsule_caps;
1da177e4
LT		 951 efi_get_next_high_mono_count_t *get_next_high_mono_count;
952 efi_reset_system_t *reset_system;
953 efi_set_virtual_address_map_t *set_virtual_address_map;
884f4f66 954 struct efi_memory_map memmap;
3e909599 955 unsigned long flags;
1da177e4
LT		 956} efi;
957
958static inline int
959efi_guidcmp (efi_guid_t left, efi_guid_t right)
960{
961 return memcmp(&left, &right, sizeof (efi_guid_t));
962}
963
964static inline char *
26e02272 965efi_guid_to_str(efi_guid_t *guid, char *out)
1da177e4 966{
925ede0b 967 sprintf(out, "%pUl", guid->b);
1da177e4
LT		 968 return out;
969}
970
971extern void efi_init (void);
972extern void *efi_get_pal_addr (void);
973extern void efi_map_pal_code (void);
1da177e4 974extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
70f4f935 975extern void efi_gettimeofday (struct timespec64 *ts);
1da177e4 976extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
78510792 977#ifdef CONFIG_X86
2223af38 978extern void efi_late_init(void);
78510792 979extern void efi_free_boot_services(void);
ca0e30dc
AB		 980extern efi_status_t efi_query_variable_store(u32 attributes,
981 unsigned long size,
982 bool nonblocking);
b05b9f5f 983extern void efi_find_mirror(void);
78510792 984#else
2223af38 985static inline void efi_late_init(void) {}
78510792 986static inline void efi_free_boot_services(void) {}
a6e4d5a0 987
ca0e30dc
AB		 988static inline efi_status_t efi_query_variable_store(u32 attributes,
989 unsigned long size,
990 bool nonblocking)
a6e4d5a0
MF		 991{
992 return EFI_SUCCESS;
993}
78510792 994#endif
7bc90e01 995extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
9479c7ce 996
20b1e22d 997extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries);
9479c7ce 998extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
dca0f971 999extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
9479c7ce 1000extern void __init efi_memmap_unmap(void);
c45f4da3 1001extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map);
60863c0d
MF		 1002extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
1003 struct range *range);
1004extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
1005 void *buf, struct efi_mem_range *mem);
9479c7ce 1006
272686bf 1007extern int efi_config_init(efi_config_table_type_t *arch_tables);
3846c158 1008#ifdef CONFIG_EFI_ESRT
0bb54905 1009extern void __init efi_esrt_init(void);
3846c158
PJ		 1010#else
1011static inline void efi_esrt_init(void) { }
1012#endif
7bb68410
AB		 1013extern int efi_config_parse_tables(void *config_tables, int count, int sz,
1014 efi_config_table_type_t *arch_tables);
1da177e4 1015extern u64 efi_get_iobase (void);
f99afd08 1016extern int efi_mem_type(unsigned long phys_addr);
1da177e4 1017extern u64 efi_mem_attributes (unsigned long phys_addr);
32e62c63 1018extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
1da177e4 1019extern int __init efi_uart_console_only (void);
0bb54905
PJ		 1020extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
1021extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
816e7612 1022extern void efi_mem_reserve(phys_addr_t addr, u64 size);
1da177e4 1023extern void efi_initialize_iomem_resources(struct resource *code_resource,
00bf4098 1024 struct resource *data_resource, struct resource *bss_resource);
916f676f 1025extern void efi_reserve_boot_services(void);
7968c0e3 1026extern int efi_get_fdt_params(struct efi_fdt_params *params);
0bb54905 1027extern struct kobject *efi_kobj;
1da177e4 1028
44be28e9 1029extern int efi_reboot_quirk_mode;
0c5ed61a
MF		 1030extern bool efi_poweroff_required(void);
1031
0f96a99d
TI		 1032#ifdef CONFIG_EFI_FAKE_MEMMAP
1033extern void __init efi_fake_memmap(void);
1034#else
1035static inline void efi_fake_memmap(void) { }
1036#endif
1037
10f0d2f5
AB		 1038/*
1039 * efi_memattr_perm_setter - arch specific callback function passed into
1040 * efi_memattr_apply_permissions() that updates the
1041 * mapping permissions described by the second
1042 * argument in the page tables referred to by the
1043 * first argument.
1044 */
1045typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
1046
1047extern int efi_memattr_init(void);
1048extern int efi_memattr_apply_permissions(struct mm_struct *mm,
1049 efi_memattr_perm_setter fn);
1050
02e43c2d
BH		 1051/*
1052 * efi_early_memdesc_ptr - get the n-th EFI memmap descriptor
1053 * @map: the start of efi memmap
1054 * @desc_size: the size of space for each EFI memmap descriptor
1055 * @n: the index of efi memmap descriptor
1056 *
1057 * EFI boot service provides the GetMemoryMap() function to get a copy of the
1058 * current memory map which is an array of memory descriptors, each of
1059 * which describes a contiguous block of memory. It also gets the size of the
1060 * map, and the size of each descriptor, etc.
1061 *
1062 * Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of
1063 * each descriptor might not be equal to sizeof(efi_memory_memdesc_t),
1064 * since efi_memory_memdesc_t may be extended in the future. Thus the OS
1065 * MUST use the returned size of the descriptor to find the start of each
1066 * efi_memory_memdesc_t in the memory map array. This should only be used
1067 * during bootup since for_each_efi_memory_desc_xxx() is available after the
1068 * kernel initializes the EFI subsystem to set up struct efi_memory_map.
1069 */
1070#define efi_early_memdesc_ptr(map, desc_size, n) \
1071 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size)))
1072
e885cd80 1073/* Iterate through an efi_memory_map */
78ce248f 1074#define for_each_efi_memory_desc_in_map(m, md) \
e885cd80 1075 for ((md) = (m)->map; \
d4c4fed0 1076 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
e885cd80
MS		 1077 (md) = (void *)(md) + (m)->desc_size)
1078
78ce248f
MF		 1079/**
1080 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1081 * @md: the efi_memory_desc_t * iterator
1082 *
1083 * Once the loop finishes @md must not be accessed.
1084 */
1085#define for_each_efi_memory_desc(md) \
884f4f66 1086 for_each_efi_memory_desc_in_map(&efi.memmap, md)
78ce248f 1087
98d2a6ca
LE		 1088/*
1089 * Format an EFI memory descriptor's type and attributes to a user-provided
1090 * character buffer, as per snprintf(), and return the buffer.
1091 */
1092char * __init efi_md_typeattr_format(char *buf, size_t size,
1093 const efi_memory_desc_t *md);
1094
910132be
DH		 1095
1096typedef void (*efi_element_handler_t)(const char *source,
1097 const void *element_data,
1098 size_t element_size);
1099extern int __init parse_efi_signature_list(
1100 const char *source,
1101 const void *data, size_t size,
1102 efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *));
1103
1da177e4
LT		 1104/**
1105 * efi_range_is_wc - check the WC bit on an address range
1106 * @start: starting kvirt address
1107 * @len: length of range
1108 *
1109 * Consult the EFI memory map and make sure it's ok to set this range WC.
1110 * Returns true or false.
1111 */
1112static inline int efi_range_is_wc(unsigned long start, unsigned long len)
1113{
986a80d5 1114 unsigned long i;
1da177e4
LT		 1115
1116 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
1117 unsigned long paddr = __pa(start + i);
1118 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
1119 return 0;
1120 }
1121 /* The range checked out */
1122 return 1;
1123}
1124
1125#ifdef CONFIG_EFI_PCDP
1126extern int __init efi_setup_pcdp_console(char *);
1127#endif
1128
1129/*
83e68189
MF		 1130 * We play games with efi_enabled so that the compiler will, if
1131 * possible, remove EFI-related code altogether.
1da177e4 1132 */
83e68189 1133#define EFI_BOOT 0 /* Were we booted from EFI? */
83e68189
MF		 1134#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1135#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1136#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1137#define EFI_64BIT 5 /* Is the firmware 64-bit? */
9f27bc54
DK		 1138#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1139#define EFI_ARCH_1 7 /* First arch-specific bit */
fed6cefe 1140#define EFI_DBG 8 /* Print additional debug info at runtime */
a1041713 1141#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
a19ebf59 1142#define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */
f371f81a
DH		 1143#define EFI_SECURE_BOOT 11 /* Are we in Secure Boot mode? */
1144
1145enum efi_secureboot_mode {
1146 efi_secureboot_mode_unset,
1147 efi_secureboot_mode_unknown,
1148 efi_secureboot_mode_disabled,
1149 efi_secureboot_mode_enabled,
1150};
83e68189 1151
1da177e4 1152#ifdef CONFIG_EFI
3e909599
MF		 1153/*
1154 * Test whether the above EFI_* bits are enabled.
1155 */
1156static inline bool efi_enabled(int feature)
1157{
1158 return test_bit(feature, &efi.flags) != 0;
1159}
8562c99c 1160extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
a19d66c5
TL		 1161
1162extern bool efi_is_table_address(unsigned long phys_addr);
f371f81a 1163extern void __init efi_set_secure_boot(enum efi_secureboot_mode mode);
1da177e4 1164#else
3e909599 1165static inline bool efi_enabled(int feature)
83e68189 1166{
3e909599 1167 return false;
83e68189 1168}
8562c99c
MF		 1169static inline void
1170efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
87615a34
MF		 1171
1172static inline bool
1173efi_capsule_pending(int *reset_type)
1174{
1175 return false;
1176}
a19d66c5
TL		 1177
1178static inline bool efi_is_table_address(unsigned long phys_addr)
1179{
1180 return false;
1181}
f371f81a 1182static inline void efi_set_secure_boot(enum efi_secureboot_mode mode) {}
1da177e4
LT		 1183#endif
1184
806b0351
MF		 1185extern int efi_status_to_err(efi_status_t status);
1186
1da177e4
LT		 1187/*
1188 * Variable Attributes
1189 */
1190#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1191#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1192#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
41b3254c
MG		 1193#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1194#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1195#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1196#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1197
1198#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1199 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1200 EFI_VARIABLE_RUNTIME_ACCESS | \
1201 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1202 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1203 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1204 EFI_VARIABLE_APPEND_WRITE)
e14ab23d
MF		 1205/*
1206 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1207 * not including trailing NUL
1208 */
ba7e34b1 1209#define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
e14ab23d 1210
e2527a7c
MF		 1211/*
1212 * The type of search to perform when calling boottime->locate_handle
1213 */
1214#define EFI_LOCATE_ALL_HANDLES 0
1215#define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1216#define EFI_LOCATE_BY_PROTOCOL 2
1217
1da177e4
LT		 1218/*
1219 * EFI Device Path information
1220 */
1221#define EFI_DEV_HW 0x01
1222#define EFI_DEV_PCI 1
1223#define EFI_DEV_PCCARD 2
1224#define EFI_DEV_MEM_MAPPED 3
1225#define EFI_DEV_VENDOR 4
1226#define EFI_DEV_CONTROLLER 5
1227#define EFI_DEV_ACPI 0x02
1228#define EFI_DEV_BASIC_ACPI 1
1229#define EFI_DEV_EXPANDED_ACPI 2
1230#define EFI_DEV_MSG 0x03
1231#define EFI_DEV_MSG_ATAPI 1
1232#define EFI_DEV_MSG_SCSI 2
1233#define EFI_DEV_MSG_FC 3
1234#define EFI_DEV_MSG_1394 4
1235#define EFI_DEV_MSG_USB 5
1236#define EFI_DEV_MSG_USB_CLASS 15
1237#define EFI_DEV_MSG_I20 6
1238#define EFI_DEV_MSG_MAC 11
1239#define EFI_DEV_MSG_IPV4 12
1240#define EFI_DEV_MSG_IPV6 13
1241#define EFI_DEV_MSG_INFINIBAND 9
1242#define EFI_DEV_MSG_UART 14
1243#define EFI_DEV_MSG_VENDOR 10
1244#define EFI_DEV_MEDIA 0x04
1245#define EFI_DEV_MEDIA_HARD_DRIVE 1
1246#define EFI_DEV_MEDIA_CDROM 2
1247#define EFI_DEV_MEDIA_VENDOR 3
1248#define EFI_DEV_MEDIA_FILE 4
1249#define EFI_DEV_MEDIA_PROTOCOL 5
1250#define EFI_DEV_BIOS_BOOT 0x05
1251#define EFI_DEV_END_PATH 0x7F
1252#define EFI_DEV_END_PATH2 0xFF
1253#define EFI_DEV_END_INSTANCE 0x01
1254#define EFI_DEV_END_ENTIRE 0xFF
1255
1256struct efi_generic_dev_path {
1257 u8 type;
1258 u8 sub_type;
1259 u16 length;
1260} __attribute ((packed));
1261
46cd4b75
LW		 1262struct efi_dev_path {
1263 u8 type; /* can be replaced with unnamed */
1264 u8 sub_type; /* struct efi_generic_dev_path; */
1265 u16 length; /* once we've moved to -std=c11 */
1266 union {
1267 struct {
1268 u32 hid;
1269 u32 uid;
1270 } acpi;
1271 struct {
1272 u8 fn;
1273 u8 dev;
1274 } pci;
1275 };
1276} __attribute ((packed));
1277
1278#if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER)
1279struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len);
1280#endif
1281
4a3575fd
HY		 1282static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1283{
1284 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1285 *addr &= PAGE_MASK;
1286}
1287
4fc756bd
MW		 1288/*
1289 * EFI Variable support.
1290 *
1291 * Different firmware drivers can expose their EFI-like variables using
1292 * the following.
1293 */
1294
1295struct efivar_operations {
1296 efi_get_variable_t *get_variable;
1297 efi_get_next_variable_t *get_next_variable;
1298 efi_set_variable_t *set_variable;
70d2a3cf 1299 efi_set_variable_t *set_variable_nonblocking;
a6e4d5a0 1300 efi_query_variable_store_t *query_variable_store;
4fc756bd
MW		 1301};
1302
1303struct efivars {
4fc756bd 1304 struct kset *kset;
605e70c7 1305 struct kobject *kobject;
4fc756bd
MW		 1306 const struct efivar_operations *ops;
1307};
1308
e14ab23d
MF		 1309/*
1310 * The maximum size of VariableName + Data = 1024
1311 * Therefore, it's reasonable to save that much
1312 * space in each part of the structure,
1313 * and we use a page for reading/writing.
1314 */
1315
a5d92ad3
MF		 1316#define EFI_VAR_NAME_LEN 1024
1317
e14ab23d 1318struct efi_variable {
a5d92ad3 1319 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
e14ab23d
MF		 1320 efi_guid_t VendorGuid;
1321 unsigned long DataSize;
1322 __u8 Data[1024];
1323 efi_status_t Status;
1324 __u32 Attributes;
1325} __attribute__((packed));
1326
1327struct efivar_entry {
1328 struct efi_variable var;
1329 struct list_head list;
1330 struct kobject kobj;
e0d59733
SA		 1331 bool scanning;
1332 bool deleting;
e14ab23d
MF		 1333};
1334
db4545d9 1335typedef struct {
677703ce
MF		 1336 u32 reset;
1337 u32 output_string;
1338 u32 test_string;
db4545d9 1339} efi_simple_text_output_protocol_32_t;
677703ce 1340
db4545d9 1341typedef struct {
677703ce
MF		 1342 u64 reset;
1343 u64 output_string;
1344 u64 test_string;
db4545d9 1345} efi_simple_text_output_protocol_64_t;
ed37ddff
RF		 1346
1347struct efi_simple_text_output_protocol {
1348 void *reset;
1349 efi_status_t (*output_string)(void *, void *);
1350 void *test_string;
1351};
1352
fc372064
AB		 1353#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1354#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1355#define PIXEL_BIT_MASK 2
1356#define PIXEL_BLT_ONLY 3
1357#define PIXEL_FORMAT_MAX 4
1358
1359struct efi_pixel_bitmask {
1360 u32 red_mask;
1361 u32 green_mask;
1362 u32 blue_mask;
1363 u32 reserved_mask;
1364};
1365
1366struct efi_graphics_output_mode_info {
1367 u32 version;
1368 u32 horizontal_resolution;
1369 u32 vertical_resolution;
1370 int pixel_format;
1371 struct efi_pixel_bitmask pixel_information;
1372 u32 pixels_per_scan_line;
1373} __packed;
1374
1375struct efi_graphics_output_protocol_mode_32 {
1376 u32 max_mode;
1377 u32 mode;
1378 u32 info;
1379 u32 size_of_info;
1380 u64 frame_buffer_base;
1381 u32 frame_buffer_size;
1382} __packed;
1383
1384struct efi_graphics_output_protocol_mode_64 {
1385 u32 max_mode;
1386 u32 mode;
1387 u64 info;
1388 u64 size_of_info;
1389 u64 frame_buffer_base;
1390 u64 frame_buffer_size;
1391} __packed;
1392
1393struct efi_graphics_output_protocol_mode {
1394 u32 max_mode;
1395 u32 mode;
1396 unsigned long info;
1397 unsigned long size_of_info;
1398 u64 frame_buffer_base;
1399 unsigned long frame_buffer_size;
1400} __packed;
1401
1402struct efi_graphics_output_protocol_32 {
1403 u32 query_mode;
1404 u32 set_mode;
1405 u32 blt;
1406 u32 mode;
1407};
1408
1409struct efi_graphics_output_protocol_64 {
1410 u64 query_mode;
1411 u64 set_mode;
1412 u64 blt;
1413 u64 mode;
1414};
1415
1416struct efi_graphics_output_protocol {
1417 unsigned long query_mode;
1418 unsigned long set_mode;
1419 unsigned long blt;
1420 struct efi_graphics_output_protocol_mode *mode;
1421};
1422
1423typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
1424 struct efi_graphics_output_protocol *, u32, unsigned long *,
1425 struct efi_graphics_output_mode_info **);
1426
04851772
MF		 1427extern struct list_head efivar_sysfs_list;
1428
1429static inline void
1430efivar_unregister(struct efivar_entry *var)
1431{
1432 kobject_put(&var->kobj);
1433}
1434
e14ab23d 1435int efivars_register(struct efivars *efivars,
4fc756bd 1436 const struct efivar_operations *ops,
e14ab23d
MF		 1437 struct kobject *kobject);
1438int efivars_unregister(struct efivars *efivars);
1439struct kobject *efivars_kobject(void);
1440
1441int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1cfd6316 1442 void *data, bool duplicates, struct list_head *head);
e14ab23d 1443
21b3ddd3
SC		 1444int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1445int efivar_entry_remove(struct efivar_entry *entry);
e14ab23d
MF		 1446
1447int __efivar_entry_delete(struct efivar_entry *entry);
1448int efivar_entry_delete(struct efivar_entry *entry);
1449
e14ab23d 1450int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
8a415b8c
MF		 1451int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1452 unsigned long *size, void *data);
e14ab23d
MF		 1453int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1454 unsigned long *size, void *data);
1455int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1456 unsigned long size, void *data, struct list_head *head);
1457int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1458 unsigned long *size, void *data, bool *set);
1459int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1460 bool block, unsigned long size, void *data);
1461
21b3ddd3 1462int efivar_entry_iter_begin(void);
e14ab23d
MF		 1463void efivar_entry_iter_end(void);
1464
1465int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1466 struct list_head *head, void *data,
1467 struct efivar_entry **prev);
1468int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1469 struct list_head *head, void *data);
1470
1471struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1472 struct list_head *head, bool remove);
1473
8282f5d9
PJ		 1474bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1475 unsigned long data_size);
ed8b0de5
PJ		 1476bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1477 size_t len);
e14ab23d 1478
a9499fa7 1479extern struct work_struct efivar_work;
04851772
MF		 1480void efivar_run_worker(void);
1481
a9499fa7 1482#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
e14ab23d 1483int efivars_sysfs_init(void);
4fc756bd 1484
e0d59733
SA		 1485#define EFIVARS_DATA_SIZE_MAX 1024
1486
4fc756bd 1487#endif /* CONFIG_EFI_VARS */
f0133f3c
MF		 1488extern bool efi_capsule_pending(int *reset_type);
1489
1490extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1491 size_t size, int *reset);
1492
1493extern int efi_capsule_update(efi_capsule_header_t *capsule,
2a457fb3 1494 phys_addr_t *pages);
4fc756bd 1495
926172d4
DY		 1496#ifdef CONFIG_EFI_RUNTIME_MAP
1497int efi_runtime_map_init(struct kobject *);
6a2c20e7
VG		 1498int efi_get_runtime_map_size(void);
1499int efi_get_runtime_map_desc_size(void);
1500int efi_runtime_map_copy(void *buf, size_t bufsz);
926172d4
DY		 1501#else
1502static inline int efi_runtime_map_init(struct kobject *kobj)
1503{
1504 return 0;
1505}
1506
6a2c20e7
VG		 1507static inline int efi_get_runtime_map_size(void)
1508{
1509 return 0;
1510}
1511
1512static inline int efi_get_runtime_map_desc_size(void)
1513{
1514 return 0;
1515}
1516
1517static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1518{
1519 return 0;
1520}
1521
926172d4
DY		 1522#endif
1523
bd669475
AB		 1524/* prototypes shared between arch specific and generic stub code */
1525
bd669475
AB		 1526void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1527
1528void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1529 unsigned long addr);
1530
1531char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1532 efi_loaded_image_t *image, int *cmd_line_len);
1533
1534efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
dadb57ab 1535 struct efi_boot_memmap *map);
bd669475
AB		 1536
1537efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1538 unsigned long size, unsigned long align,
1539 unsigned long *addr);
1540
1541efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1542 unsigned long size, unsigned long align,
1543 unsigned long *addr, unsigned long max);
1544
1545efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1546 unsigned long *image_addr,
1547 unsigned long image_size,
1548 unsigned long alloc_size,
1549 unsigned long preferred_addr,
1550 unsigned long alignment);
1551
1552efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1553 efi_loaded_image_t *image,
1554 char *cmd_line, char *option_string,
1555 unsigned long max_addr,
1556 unsigned long *load_addr,
1557 unsigned long *load_size);
1558
60f38de7 1559efi_status_t efi_parse_options(char const *cmdline);
5a17dae4 1560
2c23b73c
AB		 1561efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
1562 struct screen_info *si, efi_guid_t *proto,
1563 unsigned long size);
1564
6b1e3b19
JHP		 1565#ifdef CONFIG_EFI
1566extern bool efi_runtime_disabled(void);
1567#else
1568static inline bool efi_runtime_disabled(void) { return true; }
1569#endif
1570
80e75596
AT		 1571extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
1572
de8cb458
DH		 1573enum efi_secureboot_mode efi_get_secureboot(efi_system_table_t *sys_table);
1574
ccc829ba
MG		 1575#ifdef CONFIG_RESET_ATTACK_MITIGATION
1576void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg);
1577#else
1578static inline void
1579efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { }
1580#endif
1581
80e75596
AT		 1582/*
1583 * Arch code can implement the following three template macros, avoiding
1584 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1585 *
1586 * * arch_efi_call_virt_setup()
1587 *
1588 * Sets up the environment for the call (e.g. switching page tables,
1589 * allowing kernel-mode use of floating point, if required).
1590 *
1591 * * arch_efi_call_virt()
1592 *
1593 * Performs the call. The last expression in the macro must be the call
1594 * itself, allowing the logic to be shared by the void and non-void
1595 * cases.
1596 *
1597 * * arch_efi_call_virt_teardown()
1598 *
1599 * Restores the usual kernel environment once the call has returned.
1600 */
1601
1602#define efi_call_virt_pointer(p, f, args...) \
1603({ \
1604 efi_status_t __s; \
1605 unsigned long __flags; \
1606 \
1607 arch_efi_call_virt_setup(); \
1608 \
1609 local_save_flags(__flags); \
1610 __s = arch_efi_call_virt(p, f, args); \
1611 efi_call_virt_check_flags(__flags, __stringify(f)); \
1612 \
1613 arch_efi_call_virt_teardown(); \
1614 \
1615 __s; \
1616})
1617
1618#define __efi_call_virt_pointer(p, f, args...) \
1619({ \
1620 unsigned long __flags; \
1621 \
1622 arch_efi_call_virt_setup(); \
1623 \
1624 local_save_flags(__flags); \
1625 arch_efi_call_virt(p, f, args); \
1626 efi_call_virt_check_flags(__flags, __stringify(f)); \
1627 \
1628 arch_efi_call_virt_teardown(); \
1629})
1630
fc07716b
JH		 1631typedef efi_status_t (*efi_exit_boot_map_processing)(
1632 efi_system_table_t *sys_table_arg,
1633 struct efi_boot_memmap *map,
1634 void *priv);
1635
1636efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table,
1637 void *handle,
1638 struct efi_boot_memmap *map,
1639 void *priv,
1640 efi_exit_boot_map_processing priv_func);
63625988 1641
c2ceb5fd
AB		 1642#define EFI_RANDOM_SEED_SIZE 64U
1643
63625988
AB		 1644struct linux_efi_random_seed {
1645 u32 size;
1646 u8 bits[];
1647};
1648
1da177e4 1649#endif /* _LINUX_EFI_H */
ubuntu-bionic-kernel mirror