Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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>
21#include <linux/pfn.h>
22#include <linux/pstore.h>
23#include <linux/range.h>
24#include <linux/reboot.h>
25#include <linux/uuid.h>
26#include <linux/screen_info.h>
27
28#include <asm/page.h>
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)))
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)))
40#define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
41#define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1)))
42#define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
43
44typedef unsigned long efi_status_t;
45typedef u8 efi_bool_t;
46typedef u16 efi_char16_t; /* UNICODE character */
47typedef u64 efi_physical_addr_t;
48typedef void *efi_handle_t;
49
50typedef uuid_le efi_guid_t;
51
52#define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
53 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
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
85#define EFI_PERSISTENT_MEMORY 14
86#define EFI_MAX_MEMORY_TYPE 15
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 */
93#define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
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 */
97#define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
98#define EFI_MEMORY_MORE_RELIABLE \
99 ((u64)0x0000000000010000ULL) /* higher reliability */
100#define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
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
105#define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
106#define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT)
107
108typedef struct {
109 u32 type;
110 u32 pad;
111 u64 phys_addr;
112 u64 virt_addr;
113 u64 num_pages;
114 u64 attribute;
115} efi_memory_desc_t;
116
117typedef struct {
118 efi_guid_t guid;
119 u32 headersize;
120 u32 flags;
121 u32 imagesize;
122} efi_capsule_header_t;
123
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
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
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
148typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
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
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
273/*
274 * EFI Boot Services table
275 */
276typedef struct {
277 efi_table_hdr_t hdr;
278 void *raise_tpl;
279 void *restore_tpl;
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 *);
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;
296 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
297 void *__reserved;
298 void *register_protocol_notify;
299 efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
300 unsigned long *, efi_handle_t *);
301 void *locate_device_path;
302 efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
303 void *load_image;
304 void *start_image;
305 void *exit;
306 void *unload_image;
307 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
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;
318 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
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
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
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;
361
362typedef struct {
363 void *read;
364 void *write;
365} efi_pci_io_protocol_access_t;
366
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
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
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
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
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
512typedef struct {
513 efi_table_hdr_t hdr;
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;
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,
540 u32 attr, unsigned long data_size,
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);
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);
560typedef efi_status_t efi_query_variable_store_t(u32 attributes,
561 unsigned long size,
562 bool nonblocking);
563
564void efi_native_runtime_setup(void);
565
566/*
567 * EFI Configuration Table and GUID definitions
568 *
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:
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:
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.
586 */
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)
609#define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
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)
612#define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0)
613
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 */
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)
621#define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b)
622
623typedef struct {
624 efi_guid_t guid;
625 u64 table;
626} efi_config_table_64_t;
627
628typedef struct {
629 efi_guid_t guid;
630 u32 table;
631} efi_config_table_32_t;
632
633typedef struct {
634 efi_guid_t guid;
635 unsigned long table;
636} efi_config_table_t;
637
638typedef struct {
639 efi_guid_t guid;
640 const char *name;
641 unsigned long *ptr;
642} efi_config_table_type_t;
643
644#define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
645
646#define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
647#define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
648#define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
649#define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
650#define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
651#define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
652
653typedef struct {
654 efi_table_hdr_t hdr;
655 u64 fw_vendor; /* physical addr of CHAR16 vendor string */
656 u32 fw_revision;
657 u32 __pad1;
658 u64 con_in_handle;
659 u64 con_in;
660 u64 con_out_handle;
661 u64 con_out;
662 u64 stderr_handle;
663 u64 stderr;
664 u64 runtime;
665 u64 boottime;
666 u32 nr_tables;
667 u32 __pad2;
668 u64 tables;
669} efi_system_table_64_t;
670
671typedef struct {
672 efi_table_hdr_t hdr;
673 u32 fw_vendor; /* physical addr of CHAR16 vendor string */
674 u32 fw_revision;
675 u32 con_in_handle;
676 u32 con_in;
677 u32 con_out_handle;
678 u32 con_out;
679 u32 stderr_handle;
680 u32 stderr;
681 u32 runtime;
682 u32 boottime;
683 u32 nr_tables;
684 u32 tables;
685} efi_system_table_32_t;
686
687typedef struct {
688 efi_table_hdr_t hdr;
689 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
690 u32 fw_revision;
691 unsigned long con_in_handle;
692 unsigned long con_in;
693 unsigned long con_out_handle;
694 unsigned long con_out;
695 unsigned long stderr_handle;
696 unsigned long stderr;
697 efi_runtime_services_t *runtime;
698 efi_boot_services_t *boottime;
699 unsigned long nr_tables;
700 unsigned long tables;
701} efi_system_table_t;
702
703/*
704 * Architecture independent structure for describing a memory map for the
705 * benefit of efi_memmap_init_early(), saving us the need to pass four
706 * parameters.
707 */
708struct efi_memory_map_data {
709 phys_addr_t phys_map;
710 unsigned long size;
711 unsigned long desc_version;
712 unsigned long desc_size;
713};
714
715struct efi_memory_map {
716 phys_addr_t phys_map;
717 void *map;
718 void *map_end;
719 int nr_map;
720 unsigned long desc_version;
721 unsigned long desc_size;
722 bool late;
723};
724
725struct efi_mem_range {
726 struct range range;
727 u64 attribute;
728};
729
730struct efi_fdt_params {
731 u64 system_table;
732 u64 mmap;
733 u32 mmap_size;
734 u32 desc_size;
735 u32 desc_ver;
736};
737
738typedef struct {
739 u32 revision;
740 u32 parent_handle;
741 u32 system_table;
742 u32 device_handle;
743 u32 file_path;
744 u32 reserved;
745 u32 load_options_size;
746 u32 load_options;
747 u32 image_base;
748 __aligned_u64 image_size;
749 unsigned int image_code_type;
750 unsigned int image_data_type;
751 unsigned long unload;
752} efi_loaded_image_32_t;
753
754typedef struct {
755 u32 revision;
756 u64 parent_handle;
757 u64 system_table;
758 u64 device_handle;
759 u64 file_path;
760 u64 reserved;
761 u32 load_options_size;
762 u64 load_options;
763 u64 image_base;
764 __aligned_u64 image_size;
765 unsigned int image_code_type;
766 unsigned int image_data_type;
767 unsigned long unload;
768} efi_loaded_image_64_t;
769
770typedef struct {
771 u32 revision;
772 void *parent_handle;
773 efi_system_table_t *system_table;
774 void *device_handle;
775 void *file_path;
776 void *reserved;
777 u32 load_options_size;
778 void *load_options;
779 void *image_base;
780 __aligned_u64 image_size;
781 unsigned int image_code_type;
782 unsigned int image_data_type;
783 unsigned long unload;
784} efi_loaded_image_t;
785
786
787typedef struct {
788 u64 size;
789 u64 file_size;
790 u64 phys_size;
791 efi_time_t create_time;
792 efi_time_t last_access_time;
793 efi_time_t modification_time;
794 __aligned_u64 attribute;
795 efi_char16_t filename[1];
796} efi_file_info_t;
797
798typedef struct {
799 u64 revision;
800 u32 open;
801 u32 close;
802 u32 delete;
803 u32 read;
804 u32 write;
805 u32 get_position;
806 u32 set_position;
807 u32 get_info;
808 u32 set_info;
809 u32 flush;
810} efi_file_handle_32_t;
811
812typedef struct {
813 u64 revision;
814 u64 open;
815 u64 close;
816 u64 delete;
817 u64 read;
818 u64 write;
819 u64 get_position;
820 u64 set_position;
821 u64 get_info;
822 u64 set_info;
823 u64 flush;
824} efi_file_handle_64_t;
825
826typedef struct _efi_file_handle {
827 u64 revision;
828 efi_status_t (*open)(struct _efi_file_handle *,
829 struct _efi_file_handle **,
830 efi_char16_t *, u64, u64);
831 efi_status_t (*close)(struct _efi_file_handle *);
832 void *delete;
833 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
834 void *);
835 void *write;
836 void *get_position;
837 void *set_position;
838 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
839 unsigned long *, void *);
840 void *set_info;
841 void *flush;
842} efi_file_handle_t;
843
844typedef struct _efi_file_io_interface {
845 u64 revision;
846 int (*open_volume)(struct _efi_file_io_interface *,
847 efi_file_handle_t **);
848} efi_file_io_interface_t;
849
850#define EFI_FILE_MODE_READ 0x0000000000000001
851#define EFI_FILE_MODE_WRITE 0x0000000000000002
852#define EFI_FILE_MODE_CREATE 0x8000000000000000
853
854typedef struct {
855 u32 version;
856 u32 length;
857 u64 memory_protection_attribute;
858} efi_properties_table_t;
859
860#define EFI_PROPERTIES_TABLE_VERSION 0x00010000
861#define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
862
863#define EFI_INVALID_TABLE_ADDR (~0UL)
864
865typedef struct {
866 u32 version;
867 u32 num_entries;
868 u32 desc_size;
869 u32 reserved;
870 efi_memory_desc_t entry[0];
871} efi_memory_attributes_table_t;
872
873/*
874 * All runtime access to EFI goes through this structure:
875 */
876extern struct efi {
877 efi_system_table_t *systab; /* EFI system table */
878 unsigned int runtime_version; /* Runtime services version */
879 unsigned long mps; /* MPS table */
880 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
881 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
882 unsigned long smbios; /* SMBIOS table (32 bit entry point) */
883 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
884 unsigned long sal_systab; /* SAL system table */
885 unsigned long boot_info; /* boot info table */
886 unsigned long hcdp; /* HCDP table */
887 unsigned long uga; /* UGA table */
888 unsigned long uv_systab; /* UV system table */
889 unsigned long fw_vendor; /* fw_vendor */
890 unsigned long runtime; /* runtime table */
891 unsigned long config_table; /* config tables */
892 unsigned long esrt; /* ESRT table */
893 unsigned long properties_table; /* properties table */
894 unsigned long mem_attr_table; /* memory attributes table */
895 unsigned long rng_seed; /* UEFI firmware random seed */
896 efi_get_time_t *get_time;
897 efi_set_time_t *set_time;
898 efi_get_wakeup_time_t *get_wakeup_time;
899 efi_set_wakeup_time_t *set_wakeup_time;
900 efi_get_variable_t *get_variable;
901 efi_get_next_variable_t *get_next_variable;
902 efi_set_variable_t *set_variable;
903 efi_set_variable_t *set_variable_nonblocking;
904 efi_query_variable_info_t *query_variable_info;
905 efi_query_variable_info_t *query_variable_info_nonblocking;
906 efi_update_capsule_t *update_capsule;
907 efi_query_capsule_caps_t *query_capsule_caps;
908 efi_get_next_high_mono_count_t *get_next_high_mono_count;
909 efi_reset_system_t *reset_system;
910 efi_set_virtual_address_map_t *set_virtual_address_map;
911 struct efi_memory_map memmap;
912 unsigned long flags;
913} efi;
914
915static inline int
916efi_guidcmp (efi_guid_t left, efi_guid_t right)
917{
918 return memcmp(&left, &right, sizeof (efi_guid_t));
919}
920
921static inline char *
922efi_guid_to_str(efi_guid_t *guid, char *out)
923{
924 sprintf(out, "%pUl", guid->b);
925 return out;
926}
927
928extern void efi_init (void);
929extern void *efi_get_pal_addr (void);
930extern void efi_map_pal_code (void);
931extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
932extern void efi_gettimeofday (struct timespec64 *ts);
933extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
934#ifdef CONFIG_X86
935extern void efi_late_init(void);
936extern void efi_free_boot_services(void);
937extern efi_status_t efi_query_variable_store(u32 attributes,
938 unsigned long size,
939 bool nonblocking);
940extern void efi_find_mirror(void);
941#else
942static inline void efi_late_init(void) {}
943static inline void efi_free_boot_services(void) {}
944
945static inline efi_status_t efi_query_variable_store(u32 attributes,
946 unsigned long size,
947 bool nonblocking)
948{
949 return EFI_SUCCESS;
950}
951#endif
952extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
953
954extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries);
955extern int __init efi_memmap_init_early(struct efi_memory_map_data *data);
956extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size);
957extern void __init efi_memmap_unmap(void);
958extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map);
959extern int __init efi_memmap_split_count(efi_memory_desc_t *md,
960 struct range *range);
961extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap,
962 void *buf, struct efi_mem_range *mem);
963
964extern int efi_config_init(efi_config_table_type_t *arch_tables);
965#ifdef CONFIG_EFI_ESRT
966extern void __init efi_esrt_init(void);
967#else
968static inline void efi_esrt_init(void) { }
969#endif
970extern int efi_config_parse_tables(void *config_tables, int count, int sz,
971 efi_config_table_type_t *arch_tables);
972extern u64 efi_get_iobase (void);
973extern u32 efi_mem_type (unsigned long phys_addr);
974extern u64 efi_mem_attributes (unsigned long phys_addr);
975extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
976extern int __init efi_uart_console_only (void);
977extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
978extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
979extern void efi_mem_reserve(phys_addr_t addr, u64 size);
980extern void efi_initialize_iomem_resources(struct resource *code_resource,
981 struct resource *data_resource, struct resource *bss_resource);
982extern void efi_reserve_boot_services(void);
983extern int efi_get_fdt_params(struct efi_fdt_params *params);
984extern struct kobject *efi_kobj;
985
986extern int efi_reboot_quirk_mode;
987extern bool efi_poweroff_required(void);
988
989#ifdef CONFIG_EFI_FAKE_MEMMAP
990extern void __init efi_fake_memmap(void);
991#else
992static inline void efi_fake_memmap(void) { }
993#endif
994
995/*
996 * efi_memattr_perm_setter - arch specific callback function passed into
997 * efi_memattr_apply_permissions() that updates the
998 * mapping permissions described by the second
999 * argument in the page tables referred to by the
1000 * first argument.
1001 */
1002typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
1003
1004extern int efi_memattr_init(void);
1005extern int efi_memattr_apply_permissions(struct mm_struct *mm,
1006 efi_memattr_perm_setter fn);
1007
1008/* Iterate through an efi_memory_map */
1009#define for_each_efi_memory_desc_in_map(m, md) \
1010 for ((md) = (m)->map; \
1011 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
1012 (md) = (void *)(md) + (m)->desc_size)
1013
1014/**
1015 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1016 * @md: the efi_memory_desc_t * iterator
1017 *
1018 * Once the loop finishes @md must not be accessed.
1019 */
1020#define for_each_efi_memory_desc(md) \
1021 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1022
1023/*
1024 * Format an EFI memory descriptor's type and attributes to a user-provided
1025 * character buffer, as per snprintf(), and return the buffer.
1026 */
1027char * __init efi_md_typeattr_format(char *buf, size_t size,
1028 const efi_memory_desc_t *md);
1029
1030/**
1031 * efi_range_is_wc - check the WC bit on an address range
1032 * @start: starting kvirt address
1033 * @len: length of range
1034 *
1035 * Consult the EFI memory map and make sure it's ok to set this range WC.
1036 * Returns true or false.
1037 */
1038static inline int efi_range_is_wc(unsigned long start, unsigned long len)
1039{
1040 unsigned long i;
1041
1042 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
1043 unsigned long paddr = __pa(start + i);
1044 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
1045 return 0;
1046 }
1047 /* The range checked out */
1048 return 1;
1049}
1050
1051#ifdef CONFIG_EFI_PCDP
1052extern int __init efi_setup_pcdp_console(char *);
1053#endif
1054
1055/*
1056 * We play games with efi_enabled so that the compiler will, if
1057 * possible, remove EFI-related code altogether.
1058 */
1059#define EFI_BOOT 0 /* Were we booted from EFI? */
1060#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1061#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1062#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1063#define EFI_64BIT 5 /* Is the firmware 64-bit? */
1064#define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1065#define EFI_ARCH_1 7 /* First arch-specific bit */
1066#define EFI_DBG 8 /* Print additional debug info at runtime */
1067#define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1068
1069#ifdef CONFIG_EFI
1070/*
1071 * Test whether the above EFI_* bits are enabled.
1072 */
1073static inline bool efi_enabled(int feature)
1074{
1075 return test_bit(feature, &efi.flags) != 0;
1076}
1077extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
1078#else
1079static inline bool efi_enabled(int feature)
1080{
1081 return false;
1082}
1083static inline void
1084efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
1085
1086static inline bool
1087efi_capsule_pending(int *reset_type)
1088{
1089 return false;
1090}
1091#endif
1092
1093extern int efi_status_to_err(efi_status_t status);
1094
1095/*
1096 * Variable Attributes
1097 */
1098#define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1099#define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1100#define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1101#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1102#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1103#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1104#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1105
1106#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1107 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1108 EFI_VARIABLE_RUNTIME_ACCESS | \
1109 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1110 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1111 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1112 EFI_VARIABLE_APPEND_WRITE)
1113/*
1114 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1115 * not including trailing NUL
1116 */
1117#define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1118
1119/*
1120 * The type of search to perform when calling boottime->locate_handle
1121 */
1122#define EFI_LOCATE_ALL_HANDLES 0
1123#define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1124#define EFI_LOCATE_BY_PROTOCOL 2
1125
1126/*
1127 * EFI Device Path information
1128 */
1129#define EFI_DEV_HW 0x01
1130#define EFI_DEV_PCI 1
1131#define EFI_DEV_PCCARD 2
1132#define EFI_DEV_MEM_MAPPED 3
1133#define EFI_DEV_VENDOR 4
1134#define EFI_DEV_CONTROLLER 5
1135#define EFI_DEV_ACPI 0x02
1136#define EFI_DEV_BASIC_ACPI 1
1137#define EFI_DEV_EXPANDED_ACPI 2
1138#define EFI_DEV_MSG 0x03
1139#define EFI_DEV_MSG_ATAPI 1
1140#define EFI_DEV_MSG_SCSI 2
1141#define EFI_DEV_MSG_FC 3
1142#define EFI_DEV_MSG_1394 4
1143#define EFI_DEV_MSG_USB 5
1144#define EFI_DEV_MSG_USB_CLASS 15
1145#define EFI_DEV_MSG_I20 6
1146#define EFI_DEV_MSG_MAC 11
1147#define EFI_DEV_MSG_IPV4 12
1148#define EFI_DEV_MSG_IPV6 13
1149#define EFI_DEV_MSG_INFINIBAND 9
1150#define EFI_DEV_MSG_UART 14
1151#define EFI_DEV_MSG_VENDOR 10
1152#define EFI_DEV_MEDIA 0x04
1153#define EFI_DEV_MEDIA_HARD_DRIVE 1
1154#define EFI_DEV_MEDIA_CDROM 2
1155#define EFI_DEV_MEDIA_VENDOR 3
1156#define EFI_DEV_MEDIA_FILE 4
1157#define EFI_DEV_MEDIA_PROTOCOL 5
1158#define EFI_DEV_BIOS_BOOT 0x05
1159#define EFI_DEV_END_PATH 0x7F
1160#define EFI_DEV_END_PATH2 0xFF
1161#define EFI_DEV_END_INSTANCE 0x01
1162#define EFI_DEV_END_ENTIRE 0xFF
1163
1164struct efi_generic_dev_path {
1165 u8 type;
1166 u8 sub_type;
1167 u16 length;
1168} __attribute ((packed));
1169
1170struct efi_dev_path {
1171 u8 type; /* can be replaced with unnamed */
1172 u8 sub_type; /* struct efi_generic_dev_path; */
1173 u16 length; /* once we've moved to -std=c11 */
1174 union {
1175 struct {
1176 u32 hid;
1177 u32 uid;
1178 } acpi;
1179 struct {
1180 u8 fn;
1181 u8 dev;
1182 } pci;
1183 };
1184} __attribute ((packed));
1185
1186#if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER)
1187struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len);
1188#endif
1189
1190static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1191{
1192 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1193 *addr &= PAGE_MASK;
1194}
1195
1196/*
1197 * EFI Variable support.
1198 *
1199 * Different firmware drivers can expose their EFI-like variables using
1200 * the following.
1201 */
1202
1203struct efivar_operations {
1204 efi_get_variable_t *get_variable;
1205 efi_get_next_variable_t *get_next_variable;
1206 efi_set_variable_t *set_variable;
1207 efi_set_variable_t *set_variable_nonblocking;
1208 efi_query_variable_store_t *query_variable_store;
1209};
1210
1211struct efivars {
1212 struct kset *kset;
1213 struct kobject *kobject;
1214 const struct efivar_operations *ops;
1215};
1216
1217/*
1218 * The maximum size of VariableName + Data = 1024
1219 * Therefore, it's reasonable to save that much
1220 * space in each part of the structure,
1221 * and we use a page for reading/writing.
1222 */
1223
1224#define EFI_VAR_NAME_LEN 1024
1225
1226struct efi_variable {
1227 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1228 efi_guid_t VendorGuid;
1229 unsigned long DataSize;
1230 __u8 Data[1024];
1231 efi_status_t Status;
1232 __u32 Attributes;
1233} __attribute__((packed));
1234
1235struct efivar_entry {
1236 struct efi_variable var;
1237 struct list_head list;
1238 struct kobject kobj;
1239 bool scanning;
1240 bool deleting;
1241};
1242
1243struct efi_simple_text_output_protocol_32 {
1244 u32 reset;
1245 u32 output_string;
1246 u32 test_string;
1247};
1248
1249struct efi_simple_text_output_protocol_64 {
1250 u64 reset;
1251 u64 output_string;
1252 u64 test_string;
1253};
1254
1255struct efi_simple_text_output_protocol {
1256 void *reset;
1257 efi_status_t (*output_string)(void *, void *);
1258 void *test_string;
1259};
1260
1261#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1262#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1263#define PIXEL_BIT_MASK 2
1264#define PIXEL_BLT_ONLY 3
1265#define PIXEL_FORMAT_MAX 4
1266
1267struct efi_pixel_bitmask {
1268 u32 red_mask;
1269 u32 green_mask;
1270 u32 blue_mask;
1271 u32 reserved_mask;
1272};
1273
1274struct efi_graphics_output_mode_info {
1275 u32 version;
1276 u32 horizontal_resolution;
1277 u32 vertical_resolution;
1278 int pixel_format;
1279 struct efi_pixel_bitmask pixel_information;
1280 u32 pixels_per_scan_line;
1281} __packed;
1282
1283struct efi_graphics_output_protocol_mode_32 {
1284 u32 max_mode;
1285 u32 mode;
1286 u32 info;
1287 u32 size_of_info;
1288 u64 frame_buffer_base;
1289 u32 frame_buffer_size;
1290} __packed;
1291
1292struct efi_graphics_output_protocol_mode_64 {
1293 u32 max_mode;
1294 u32 mode;
1295 u64 info;
1296 u64 size_of_info;
1297 u64 frame_buffer_base;
1298 u64 frame_buffer_size;
1299} __packed;
1300
1301struct efi_graphics_output_protocol_mode {
1302 u32 max_mode;
1303 u32 mode;
1304 unsigned long info;
1305 unsigned long size_of_info;
1306 u64 frame_buffer_base;
1307 unsigned long frame_buffer_size;
1308} __packed;
1309
1310struct efi_graphics_output_protocol_32 {
1311 u32 query_mode;
1312 u32 set_mode;
1313 u32 blt;
1314 u32 mode;
1315};
1316
1317struct efi_graphics_output_protocol_64 {
1318 u64 query_mode;
1319 u64 set_mode;
1320 u64 blt;
1321 u64 mode;
1322};
1323
1324struct efi_graphics_output_protocol {
1325 unsigned long query_mode;
1326 unsigned long set_mode;
1327 unsigned long blt;
1328 struct efi_graphics_output_protocol_mode *mode;
1329};
1330
1331typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
1332 struct efi_graphics_output_protocol *, u32, unsigned long *,
1333 struct efi_graphics_output_mode_info **);
1334
1335extern struct list_head efivar_sysfs_list;
1336
1337static inline void
1338efivar_unregister(struct efivar_entry *var)
1339{
1340 kobject_put(&var->kobj);
1341}
1342
1343int efivars_register(struct efivars *efivars,
1344 const struct efivar_operations *ops,
1345 struct kobject *kobject);
1346int efivars_unregister(struct efivars *efivars);
1347struct kobject *efivars_kobject(void);
1348
1349int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1350 void *data, bool duplicates, struct list_head *head);
1351
1352int efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1353int efivar_entry_remove(struct efivar_entry *entry);
1354
1355int __efivar_entry_delete(struct efivar_entry *entry);
1356int efivar_entry_delete(struct efivar_entry *entry);
1357
1358int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1359int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1360 unsigned long *size, void *data);
1361int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1362 unsigned long *size, void *data);
1363int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1364 unsigned long size, void *data, struct list_head *head);
1365int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1366 unsigned long *size, void *data, bool *set);
1367int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1368 bool block, unsigned long size, void *data);
1369
1370int efivar_entry_iter_begin(void);
1371void efivar_entry_iter_end(void);
1372
1373int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1374 struct list_head *head, void *data,
1375 struct efivar_entry **prev);
1376int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1377 struct list_head *head, void *data);
1378
1379struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1380 struct list_head *head, bool remove);
1381
1382bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1383 unsigned long data_size);
1384bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1385 size_t len);
1386
1387extern struct work_struct efivar_work;
1388void efivar_run_worker(void);
1389
1390#if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1391int efivars_sysfs_init(void);
1392
1393#define EFIVARS_DATA_SIZE_MAX 1024
1394
1395#endif /* CONFIG_EFI_VARS */
1396extern bool efi_capsule_pending(int *reset_type);
1397
1398extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1399 size_t size, int *reset);
1400
1401extern int efi_capsule_update(efi_capsule_header_t *capsule,
1402 struct page **pages);
1403
1404#ifdef CONFIG_EFI_RUNTIME_MAP
1405int efi_runtime_map_init(struct kobject *);
1406int efi_get_runtime_map_size(void);
1407int efi_get_runtime_map_desc_size(void);
1408int efi_runtime_map_copy(void *buf, size_t bufsz);
1409#else
1410static inline int efi_runtime_map_init(struct kobject *kobj)
1411{
1412 return 0;
1413}
1414
1415static inline int efi_get_runtime_map_size(void)
1416{
1417 return 0;
1418}
1419
1420static inline int efi_get_runtime_map_desc_size(void)
1421{
1422 return 0;
1423}
1424
1425static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1426{
1427 return 0;
1428}
1429
1430#endif
1431
1432/* prototypes shared between arch specific and generic stub code */
1433
1434#define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1435#define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1436
1437void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1438
1439void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1440 unsigned long addr);
1441
1442char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1443 efi_loaded_image_t *image, int *cmd_line_len);
1444
1445efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1446 struct efi_boot_memmap *map);
1447
1448efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1449 unsigned long size, unsigned long align,
1450 unsigned long *addr);
1451
1452efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1453 unsigned long size, unsigned long align,
1454 unsigned long *addr, unsigned long max);
1455
1456efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1457 unsigned long *image_addr,
1458 unsigned long image_size,
1459 unsigned long alloc_size,
1460 unsigned long preferred_addr,
1461 unsigned long alignment);
1462
1463efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1464 efi_loaded_image_t *image,
1465 char *cmd_line, char *option_string,
1466 unsigned long max_addr,
1467 unsigned long *load_addr,
1468 unsigned long *load_size);
1469
1470efi_status_t efi_parse_options(char *cmdline);
1471
1472efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
1473 struct screen_info *si, efi_guid_t *proto,
1474 unsigned long size);
1475
1476bool efi_runtime_disabled(void);
1477extern void efi_call_virt_check_flags(unsigned long flags, const char *call);
1478
1479/*
1480 * Arch code can implement the following three template macros, avoiding
1481 * reptition for the void/non-void return cases of {__,}efi_call_virt():
1482 *
1483 * * arch_efi_call_virt_setup()
1484 *
1485 * Sets up the environment for the call (e.g. switching page tables,
1486 * allowing kernel-mode use of floating point, if required).
1487 *
1488 * * arch_efi_call_virt()
1489 *
1490 * Performs the call. The last expression in the macro must be the call
1491 * itself, allowing the logic to be shared by the void and non-void
1492 * cases.
1493 *
1494 * * arch_efi_call_virt_teardown()
1495 *
1496 * Restores the usual kernel environment once the call has returned.
1497 */
1498
1499#define efi_call_virt_pointer(p, f, args...) \
1500({ \
1501 efi_status_t __s; \
1502 unsigned long __flags; \
1503 \
1504 arch_efi_call_virt_setup(); \
1505 \
1506 local_save_flags(__flags); \
1507 __s = arch_efi_call_virt(p, f, args); \
1508 efi_call_virt_check_flags(__flags, __stringify(f)); \
1509 \
1510 arch_efi_call_virt_teardown(); \
1511 \
1512 __s; \
1513})
1514
1515#define __efi_call_virt_pointer(p, f, args...) \
1516({ \
1517 unsigned long __flags; \
1518 \
1519 arch_efi_call_virt_setup(); \
1520 \
1521 local_save_flags(__flags); \
1522 arch_efi_call_virt(p, f, args); \
1523 efi_call_virt_check_flags(__flags, __stringify(f)); \
1524 \
1525 arch_efi_call_virt_teardown(); \
1526})
1527
1528typedef efi_status_t (*efi_exit_boot_map_processing)(
1529 efi_system_table_t *sys_table_arg,
1530 struct efi_boot_memmap *map,
1531 void *priv);
1532
1533efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table,
1534 void *handle,
1535 struct efi_boot_memmap *map,
1536 void *priv,
1537 efi_exit_boot_map_processing priv_func);
1538
1539struct linux_efi_random_seed {
1540 u32 size;
1541 u8 bits[];
1542};
1543
1544#endif /* _LINUX_EFI_H */