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