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Merge branch 'pci/msi-affinity' into next
[deliverable/linux.git] / include / linux / efi.h
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/reboot.h>
24 #include <linux/uuid.h>
25 #include <linux/screen_info.h>
26
27 #include <asm/page.h>
28
29 #define EFI_SUCCESS 0
30 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1)))
31 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1)))
32 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1)))
33 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1)))
34 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1)))
35 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1)))
36 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1)))
37 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1)))
38 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1)))
39 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1)))
40 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1)))
41
42 typedef unsigned long efi_status_t;
43 typedef u8 efi_bool_t;
44 typedef u16 efi_char16_t; /* UNICODE character */
45 typedef u64 efi_physical_addr_t;
46 typedef void *efi_handle_t;
47
48 typedef uuid_le efi_guid_t;
49
50 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
51 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7)
52
53 /*
54 * Generic EFI table header
55 */
56 typedef struct {
57 u64 signature;
58 u32 revision;
59 u32 headersize;
60 u32 crc32;
61 u32 reserved;
62 } efi_table_hdr_t;
63
64 /*
65 * Memory map descriptor:
66 */
67
68 /* Memory types: */
69 #define EFI_RESERVED_TYPE 0
70 #define EFI_LOADER_CODE 1
71 #define EFI_LOADER_DATA 2
72 #define EFI_BOOT_SERVICES_CODE 3
73 #define EFI_BOOT_SERVICES_DATA 4
74 #define EFI_RUNTIME_SERVICES_CODE 5
75 #define EFI_RUNTIME_SERVICES_DATA 6
76 #define EFI_CONVENTIONAL_MEMORY 7
77 #define EFI_UNUSABLE_MEMORY 8
78 #define EFI_ACPI_RECLAIM_MEMORY 9
79 #define EFI_ACPI_MEMORY_NVS 10
80 #define EFI_MEMORY_MAPPED_IO 11
81 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
82 #define EFI_PAL_CODE 13
83 #define EFI_PERSISTENT_MEMORY 14
84 #define EFI_MAX_MEMORY_TYPE 15
85
86 /* Attribute values: */
87 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */
88 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */
89 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */
90 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */
91 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */
92 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */
93 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */
94 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */
95 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */
96 #define EFI_MEMORY_MORE_RELIABLE \
97 ((u64)0x0000000000010000ULL) /* higher reliability */
98 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */
99 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */
100 #define EFI_MEMORY_DESCRIPTOR_VERSION 1
101
102 #define EFI_PAGE_SHIFT 12
103 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT)
104
105 typedef struct {
106 u32 type;
107 u32 pad;
108 u64 phys_addr;
109 u64 virt_addr;
110 u64 num_pages;
111 u64 attribute;
112 } efi_memory_desc_t;
113
114 typedef struct {
115 efi_guid_t guid;
116 u32 headersize;
117 u32 flags;
118 u32 imagesize;
119 } efi_capsule_header_t;
120
121 /*
122 * EFI capsule flags
123 */
124 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
125 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
126 #define EFI_CAPSULE_INITIATE_RESET 0x00040000
127
128 /*
129 * Allocation types for calls to boottime->allocate_pages.
130 */
131 #define EFI_ALLOCATE_ANY_PAGES 0
132 #define EFI_ALLOCATE_MAX_ADDRESS 1
133 #define EFI_ALLOCATE_ADDRESS 2
134 #define EFI_MAX_ALLOCATE_TYPE 3
135
136 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
137
138 /*
139 * Types and defines for Time Services
140 */
141 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
142 #define EFI_TIME_IN_DAYLIGHT 0x2
143 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
144
145 typedef struct {
146 u16 year;
147 u8 month;
148 u8 day;
149 u8 hour;
150 u8 minute;
151 u8 second;
152 u8 pad1;
153 u32 nanosecond;
154 s16 timezone;
155 u8 daylight;
156 u8 pad2;
157 } efi_time_t;
158
159 typedef struct {
160 u32 resolution;
161 u32 accuracy;
162 u8 sets_to_zero;
163 } efi_time_cap_t;
164
165 typedef struct {
166 efi_table_hdr_t hdr;
167 u32 raise_tpl;
168 u32 restore_tpl;
169 u32 allocate_pages;
170 u32 free_pages;
171 u32 get_memory_map;
172 u32 allocate_pool;
173 u32 free_pool;
174 u32 create_event;
175 u32 set_timer;
176 u32 wait_for_event;
177 u32 signal_event;
178 u32 close_event;
179 u32 check_event;
180 u32 install_protocol_interface;
181 u32 reinstall_protocol_interface;
182 u32 uninstall_protocol_interface;
183 u32 handle_protocol;
184 u32 __reserved;
185 u32 register_protocol_notify;
186 u32 locate_handle;
187 u32 locate_device_path;
188 u32 install_configuration_table;
189 u32 load_image;
190 u32 start_image;
191 u32 exit;
192 u32 unload_image;
193 u32 exit_boot_services;
194 u32 get_next_monotonic_count;
195 u32 stall;
196 u32 set_watchdog_timer;
197 u32 connect_controller;
198 u32 disconnect_controller;
199 u32 open_protocol;
200 u32 close_protocol;
201 u32 open_protocol_information;
202 u32 protocols_per_handle;
203 u32 locate_handle_buffer;
204 u32 locate_protocol;
205 u32 install_multiple_protocol_interfaces;
206 u32 uninstall_multiple_protocol_interfaces;
207 u32 calculate_crc32;
208 u32 copy_mem;
209 u32 set_mem;
210 u32 create_event_ex;
211 } __packed efi_boot_services_32_t;
212
213 typedef struct {
214 efi_table_hdr_t hdr;
215 u64 raise_tpl;
216 u64 restore_tpl;
217 u64 allocate_pages;
218 u64 free_pages;
219 u64 get_memory_map;
220 u64 allocate_pool;
221 u64 free_pool;
222 u64 create_event;
223 u64 set_timer;
224 u64 wait_for_event;
225 u64 signal_event;
226 u64 close_event;
227 u64 check_event;
228 u64 install_protocol_interface;
229 u64 reinstall_protocol_interface;
230 u64 uninstall_protocol_interface;
231 u64 handle_protocol;
232 u64 __reserved;
233 u64 register_protocol_notify;
234 u64 locate_handle;
235 u64 locate_device_path;
236 u64 install_configuration_table;
237 u64 load_image;
238 u64 start_image;
239 u64 exit;
240 u64 unload_image;
241 u64 exit_boot_services;
242 u64 get_next_monotonic_count;
243 u64 stall;
244 u64 set_watchdog_timer;
245 u64 connect_controller;
246 u64 disconnect_controller;
247 u64 open_protocol;
248 u64 close_protocol;
249 u64 open_protocol_information;
250 u64 protocols_per_handle;
251 u64 locate_handle_buffer;
252 u64 locate_protocol;
253 u64 install_multiple_protocol_interfaces;
254 u64 uninstall_multiple_protocol_interfaces;
255 u64 calculate_crc32;
256 u64 copy_mem;
257 u64 set_mem;
258 u64 create_event_ex;
259 } __packed efi_boot_services_64_t;
260
261 /*
262 * EFI Boot Services table
263 */
264 typedef struct {
265 efi_table_hdr_t hdr;
266 void *raise_tpl;
267 void *restore_tpl;
268 efi_status_t (*allocate_pages)(int, int, unsigned long,
269 efi_physical_addr_t *);
270 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
271 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
272 unsigned long *, u32 *);
273 efi_status_t (*allocate_pool)(int, unsigned long, void **);
274 efi_status_t (*free_pool)(void *);
275 void *create_event;
276 void *set_timer;
277 void *wait_for_event;
278 void *signal_event;
279 void *close_event;
280 void *check_event;
281 void *install_protocol_interface;
282 void *reinstall_protocol_interface;
283 void *uninstall_protocol_interface;
284 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
285 void *__reserved;
286 void *register_protocol_notify;
287 efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
288 unsigned long *, efi_handle_t *);
289 void *locate_device_path;
290 efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
291 void *load_image;
292 void *start_image;
293 void *exit;
294 void *unload_image;
295 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
296 void *get_next_monotonic_count;
297 void *stall;
298 void *set_watchdog_timer;
299 void *connect_controller;
300 void *disconnect_controller;
301 void *open_protocol;
302 void *close_protocol;
303 void *open_protocol_information;
304 void *protocols_per_handle;
305 void *locate_handle_buffer;
306 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **);
307 void *install_multiple_protocol_interfaces;
308 void *uninstall_multiple_protocol_interfaces;
309 void *calculate_crc32;
310 void *copy_mem;
311 void *set_mem;
312 void *create_event_ex;
313 } efi_boot_services_t;
314
315 typedef enum {
316 EfiPciIoWidthUint8,
317 EfiPciIoWidthUint16,
318 EfiPciIoWidthUint32,
319 EfiPciIoWidthUint64,
320 EfiPciIoWidthFifoUint8,
321 EfiPciIoWidthFifoUint16,
322 EfiPciIoWidthFifoUint32,
323 EfiPciIoWidthFifoUint64,
324 EfiPciIoWidthFillUint8,
325 EfiPciIoWidthFillUint16,
326 EfiPciIoWidthFillUint32,
327 EfiPciIoWidthFillUint64,
328 EfiPciIoWidthMaximum
329 } EFI_PCI_IO_PROTOCOL_WIDTH;
330
331 typedef enum {
332 EfiPciIoAttributeOperationGet,
333 EfiPciIoAttributeOperationSet,
334 EfiPciIoAttributeOperationEnable,
335 EfiPciIoAttributeOperationDisable,
336 EfiPciIoAttributeOperationSupported,
337 EfiPciIoAttributeOperationMaximum
338 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
339
340 typedef struct {
341 u32 read;
342 u32 write;
343 } efi_pci_io_protocol_access_32_t;
344
345 typedef struct {
346 u64 read;
347 u64 write;
348 } efi_pci_io_protocol_access_64_t;
349
350 typedef struct {
351 void *read;
352 void *write;
353 } efi_pci_io_protocol_access_t;
354
355 typedef struct {
356 u32 poll_mem;
357 u32 poll_io;
358 efi_pci_io_protocol_access_32_t mem;
359 efi_pci_io_protocol_access_32_t io;
360 efi_pci_io_protocol_access_32_t pci;
361 u32 copy_mem;
362 u32 map;
363 u32 unmap;
364 u32 allocate_buffer;
365 u32 free_buffer;
366 u32 flush;
367 u32 get_location;
368 u32 attributes;
369 u32 get_bar_attributes;
370 u32 set_bar_attributes;
371 uint64_t romsize;
372 void *romimage;
373 } efi_pci_io_protocol_32;
374
375 typedef struct {
376 u64 poll_mem;
377 u64 poll_io;
378 efi_pci_io_protocol_access_64_t mem;
379 efi_pci_io_protocol_access_64_t io;
380 efi_pci_io_protocol_access_64_t pci;
381 u64 copy_mem;
382 u64 map;
383 u64 unmap;
384 u64 allocate_buffer;
385 u64 free_buffer;
386 u64 flush;
387 u64 get_location;
388 u64 attributes;
389 u64 get_bar_attributes;
390 u64 set_bar_attributes;
391 uint64_t romsize;
392 void *romimage;
393 } efi_pci_io_protocol_64;
394
395 typedef struct {
396 void *poll_mem;
397 void *poll_io;
398 efi_pci_io_protocol_access_t mem;
399 efi_pci_io_protocol_access_t io;
400 efi_pci_io_protocol_access_t pci;
401 void *copy_mem;
402 void *map;
403 void *unmap;
404 void *allocate_buffer;
405 void *free_buffer;
406 void *flush;
407 void *get_location;
408 void *attributes;
409 void *get_bar_attributes;
410 void *set_bar_attributes;
411 uint64_t romsize;
412 void *romimage;
413 } efi_pci_io_protocol;
414
415 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
416 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
417 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
418 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
419 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
420 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
421 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
423 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
424 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
425 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
426 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
427 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
428 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
429 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
430 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
431 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
432 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
433 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
434
435 /*
436 * Types and defines for EFI ResetSystem
437 */
438 #define EFI_RESET_COLD 0
439 #define EFI_RESET_WARM 1
440 #define EFI_RESET_SHUTDOWN 2
441
442 /*
443 * EFI Runtime Services table
444 */
445 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
446 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000
447
448 typedef struct {
449 efi_table_hdr_t hdr;
450 u32 get_time;
451 u32 set_time;
452 u32 get_wakeup_time;
453 u32 set_wakeup_time;
454 u32 set_virtual_address_map;
455 u32 convert_pointer;
456 u32 get_variable;
457 u32 get_next_variable;
458 u32 set_variable;
459 u32 get_next_high_mono_count;
460 u32 reset_system;
461 u32 update_capsule;
462 u32 query_capsule_caps;
463 u32 query_variable_info;
464 } efi_runtime_services_32_t;
465
466 typedef struct {
467 efi_table_hdr_t hdr;
468 u64 get_time;
469 u64 set_time;
470 u64 get_wakeup_time;
471 u64 set_wakeup_time;
472 u64 set_virtual_address_map;
473 u64 convert_pointer;
474 u64 get_variable;
475 u64 get_next_variable;
476 u64 set_variable;
477 u64 get_next_high_mono_count;
478 u64 reset_system;
479 u64 update_capsule;
480 u64 query_capsule_caps;
481 u64 query_variable_info;
482 } efi_runtime_services_64_t;
483
484 typedef struct {
485 efi_table_hdr_t hdr;
486 void *get_time;
487 void *set_time;
488 void *get_wakeup_time;
489 void *set_wakeup_time;
490 void *set_virtual_address_map;
491 void *convert_pointer;
492 void *get_variable;
493 void *get_next_variable;
494 void *set_variable;
495 void *get_next_high_mono_count;
496 void *reset_system;
497 void *update_capsule;
498 void *query_capsule_caps;
499 void *query_variable_info;
500 } efi_runtime_services_t;
501
502 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
503 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
504 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
505 efi_time_t *tm);
506 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
507 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
508 unsigned long *data_size, void *data);
509 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
510 efi_guid_t *vendor);
511 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
512 u32 attr, unsigned long data_size,
513 void *data);
514 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
515 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
516 unsigned long data_size, efi_char16_t *data);
517 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
518 unsigned long descriptor_size,
519 u32 descriptor_version,
520 efi_memory_desc_t *virtual_map);
521 typedef efi_status_t efi_query_variable_info_t(u32 attr,
522 u64 *storage_space,
523 u64 *remaining_space,
524 u64 *max_variable_size);
525 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
526 unsigned long count,
527 unsigned long sg_list);
528 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
529 unsigned long count,
530 u64 *max_size,
531 int *reset_type);
532 typedef efi_status_t efi_query_variable_store_t(u32 attributes,
533 unsigned long size,
534 bool nonblocking);
535
536 void efi_native_runtime_setup(void);
537
538 /*
539 * EFI Configuration Table and GUID definitions
540 */
541 #define NULL_GUID \
542 EFI_GUID(0x00000000, 0x0000, 0x0000, \
543 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
544
545 #define MPS_TABLE_GUID \
546 EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \
547 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
548
549 #define ACPI_TABLE_GUID \
550 EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \
551 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
552
553 #define ACPI_20_TABLE_GUID \
554 EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \
555 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
556
557 #define SMBIOS_TABLE_GUID \
558 EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \
559 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
560
561 #define SMBIOS3_TABLE_GUID \
562 EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \
563 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
564
565 #define SAL_SYSTEM_TABLE_GUID \
566 EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \
567 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
568
569 #define HCDP_TABLE_GUID \
570 EFI_GUID(0xf951938d, 0x620b, 0x42ef, \
571 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
572
573 #define UGA_IO_PROTOCOL_GUID \
574 EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \
575 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
576
577 #define EFI_GLOBAL_VARIABLE_GUID \
578 EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \
579 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
580
581 #define UV_SYSTEM_TABLE_GUID \
582 EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \
583 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
584
585 #define LINUX_EFI_CRASH_GUID \
586 EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \
587 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0)
588
589 #define LOADED_IMAGE_PROTOCOL_GUID \
590 EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \
591 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
592
593 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
594 EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \
595 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a)
596
597 #define EFI_UGA_PROTOCOL_GUID \
598 EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \
599 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39)
600
601 #define EFI_PCI_IO_PROTOCOL_GUID \
602 EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \
603 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a)
604
605 #define EFI_FILE_INFO_ID \
606 EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \
607 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
608
609 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \
610 EFI_GUID(0xb122a263, 0x3661, 0x4f68, \
611 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80)
612
613 #define EFI_FILE_SYSTEM_GUID \
614 EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \
615 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b)
616
617 #define DEVICE_TREE_GUID \
618 EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \
619 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0)
620
621 #define EFI_PROPERTIES_TABLE_GUID \
622 EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \
623 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5)
624
625 #define EFI_RNG_PROTOCOL_GUID \
626 EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
627 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
628
629 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \
630 EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \
631 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
632
633 #define EFI_CONSOLE_OUT_DEVICE_GUID \
634 EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \
635 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
636
637 /*
638 * This GUID is used to pass to the kernel proper the struct screen_info
639 * structure that was populated by the stub based on the GOP protocol instance
640 * associated with ConOut
641 */
642 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \
643 EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \
644 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
645
646 #define LINUX_EFI_LOADER_ENTRY_GUID \
647 EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \
648 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
649
650 typedef struct {
651 efi_guid_t guid;
652 u64 table;
653 } efi_config_table_64_t;
654
655 typedef struct {
656 efi_guid_t guid;
657 u32 table;
658 } efi_config_table_32_t;
659
660 typedef struct {
661 efi_guid_t guid;
662 unsigned long table;
663 } efi_config_table_t;
664
665 typedef struct {
666 efi_guid_t guid;
667 const char *name;
668 unsigned long *ptr;
669 } efi_config_table_type_t;
670
671 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
672
673 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30))
674 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20))
675 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10))
676 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00))
677 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10))
678 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02))
679
680 typedef struct {
681 efi_table_hdr_t hdr;
682 u64 fw_vendor; /* physical addr of CHAR16 vendor string */
683 u32 fw_revision;
684 u32 __pad1;
685 u64 con_in_handle;
686 u64 con_in;
687 u64 con_out_handle;
688 u64 con_out;
689 u64 stderr_handle;
690 u64 stderr;
691 u64 runtime;
692 u64 boottime;
693 u32 nr_tables;
694 u32 __pad2;
695 u64 tables;
696 } efi_system_table_64_t;
697
698 typedef struct {
699 efi_table_hdr_t hdr;
700 u32 fw_vendor; /* physical addr of CHAR16 vendor string */
701 u32 fw_revision;
702 u32 con_in_handle;
703 u32 con_in;
704 u32 con_out_handle;
705 u32 con_out;
706 u32 stderr_handle;
707 u32 stderr;
708 u32 runtime;
709 u32 boottime;
710 u32 nr_tables;
711 u32 tables;
712 } efi_system_table_32_t;
713
714 typedef struct {
715 efi_table_hdr_t hdr;
716 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */
717 u32 fw_revision;
718 unsigned long con_in_handle;
719 unsigned long con_in;
720 unsigned long con_out_handle;
721 unsigned long con_out;
722 unsigned long stderr_handle;
723 unsigned long stderr;
724 efi_runtime_services_t *runtime;
725 efi_boot_services_t *boottime;
726 unsigned long nr_tables;
727 unsigned long tables;
728 } efi_system_table_t;
729
730 struct 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 };
738
739 struct efi_fdt_params {
740 u64 system_table;
741 u64 mmap;
742 u32 mmap_size;
743 u32 desc_size;
744 u32 desc_ver;
745 };
746
747 typedef struct {
748 u32 revision;
749 u32 parent_handle;
750 u32 system_table;
751 u32 device_handle;
752 u32 file_path;
753 u32 reserved;
754 u32 load_options_size;
755 u32 load_options;
756 u32 image_base;
757 __aligned_u64 image_size;
758 unsigned int image_code_type;
759 unsigned int image_data_type;
760 unsigned long unload;
761 } efi_loaded_image_32_t;
762
763 typedef struct {
764 u32 revision;
765 u64 parent_handle;
766 u64 system_table;
767 u64 device_handle;
768 u64 file_path;
769 u64 reserved;
770 u32 load_options_size;
771 u64 load_options;
772 u64 image_base;
773 __aligned_u64 image_size;
774 unsigned int image_code_type;
775 unsigned int image_data_type;
776 unsigned long unload;
777 } efi_loaded_image_64_t;
778
779 typedef struct {
780 u32 revision;
781 void *parent_handle;
782 efi_system_table_t *system_table;
783 void *device_handle;
784 void *file_path;
785 void *reserved;
786 u32 load_options_size;
787 void *load_options;
788 void *image_base;
789 __aligned_u64 image_size;
790 unsigned int image_code_type;
791 unsigned int image_data_type;
792 unsigned long unload;
793 } efi_loaded_image_t;
794
795
796 typedef struct {
797 u64 size;
798 u64 file_size;
799 u64 phys_size;
800 efi_time_t create_time;
801 efi_time_t last_access_time;
802 efi_time_t modification_time;
803 __aligned_u64 attribute;
804 efi_char16_t filename[1];
805 } efi_file_info_t;
806
807 typedef struct {
808 u64 revision;
809 u32 open;
810 u32 close;
811 u32 delete;
812 u32 read;
813 u32 write;
814 u32 get_position;
815 u32 set_position;
816 u32 get_info;
817 u32 set_info;
818 u32 flush;
819 } efi_file_handle_32_t;
820
821 typedef struct {
822 u64 revision;
823 u64 open;
824 u64 close;
825 u64 delete;
826 u64 read;
827 u64 write;
828 u64 get_position;
829 u64 set_position;
830 u64 get_info;
831 u64 set_info;
832 u64 flush;
833 } efi_file_handle_64_t;
834
835 typedef struct _efi_file_handle {
836 u64 revision;
837 efi_status_t (*open)(struct _efi_file_handle *,
838 struct _efi_file_handle **,
839 efi_char16_t *, u64, u64);
840 efi_status_t (*close)(struct _efi_file_handle *);
841 void *delete;
842 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
843 void *);
844 void *write;
845 void *get_position;
846 void *set_position;
847 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
848 unsigned long *, void *);
849 void *set_info;
850 void *flush;
851 } efi_file_handle_t;
852
853 typedef struct _efi_file_io_interface {
854 u64 revision;
855 int (*open_volume)(struct _efi_file_io_interface *,
856 efi_file_handle_t **);
857 } efi_file_io_interface_t;
858
859 #define EFI_FILE_MODE_READ 0x0000000000000001
860 #define EFI_FILE_MODE_WRITE 0x0000000000000002
861 #define EFI_FILE_MODE_CREATE 0x8000000000000000
862
863 typedef struct {
864 u32 version;
865 u32 length;
866 u64 memory_protection_attribute;
867 } efi_properties_table_t;
868
869 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000
870 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1
871
872 #define EFI_INVALID_TABLE_ADDR (~0UL)
873
874 typedef struct {
875 u32 version;
876 u32 num_entries;
877 u32 desc_size;
878 u32 reserved;
879 efi_memory_desc_t entry[0];
880 } efi_memory_attributes_table_t;
881
882 /*
883 * All runtime access to EFI goes through this structure:
884 */
885 extern struct efi {
886 efi_system_table_t *systab; /* EFI system table */
887 unsigned int runtime_version; /* Runtime services version */
888 unsigned long mps; /* MPS table */
889 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */
890 unsigned long acpi20; /* ACPI table (ACPI 2.0) */
891 unsigned long smbios; /* SMBIOS table (32 bit entry point) */
892 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */
893 unsigned long sal_systab; /* SAL system table */
894 unsigned long boot_info; /* boot info table */
895 unsigned long hcdp; /* HCDP table */
896 unsigned long uga; /* UGA table */
897 unsigned long uv_systab; /* UV system table */
898 unsigned long fw_vendor; /* fw_vendor */
899 unsigned long runtime; /* runtime table */
900 unsigned long config_table; /* config tables */
901 unsigned long esrt; /* ESRT table */
902 unsigned long properties_table; /* properties table */
903 unsigned long mem_attr_table; /* memory attributes table */
904 efi_get_time_t *get_time;
905 efi_set_time_t *set_time;
906 efi_get_wakeup_time_t *get_wakeup_time;
907 efi_set_wakeup_time_t *set_wakeup_time;
908 efi_get_variable_t *get_variable;
909 efi_get_next_variable_t *get_next_variable;
910 efi_set_variable_t *set_variable;
911 efi_set_variable_t *set_variable_nonblocking;
912 efi_query_variable_info_t *query_variable_info;
913 efi_query_variable_info_t *query_variable_info_nonblocking;
914 efi_update_capsule_t *update_capsule;
915 efi_query_capsule_caps_t *query_capsule_caps;
916 efi_get_next_high_mono_count_t *get_next_high_mono_count;
917 efi_reset_system_t *reset_system;
918 efi_set_virtual_address_map_t *set_virtual_address_map;
919 struct efi_memory_map memmap;
920 unsigned long flags;
921 } efi;
922
923 static inline int
924 efi_guidcmp (efi_guid_t left, efi_guid_t right)
925 {
926 return memcmp(&left, &right, sizeof (efi_guid_t));
927 }
928
929 static inline char *
930 efi_guid_to_str(efi_guid_t *guid, char *out)
931 {
932 sprintf(out, "%pUl", guid->b);
933 return out;
934 }
935
936 extern void efi_init (void);
937 extern void *efi_get_pal_addr (void);
938 extern void efi_map_pal_code (void);
939 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
940 extern void efi_gettimeofday (struct timespec *ts);
941 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */
942 #ifdef CONFIG_X86
943 extern void efi_late_init(void);
944 extern void efi_free_boot_services(void);
945 extern efi_status_t efi_query_variable_store(u32 attributes,
946 unsigned long size,
947 bool nonblocking);
948 extern void efi_find_mirror(void);
949 #else
950 static inline void efi_late_init(void) {}
951 static inline void efi_free_boot_services(void) {}
952
953 static inline efi_status_t efi_query_variable_store(u32 attributes,
954 unsigned long size,
955 bool nonblocking)
956 {
957 return EFI_SUCCESS;
958 }
959 #endif
960 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
961 extern int efi_config_init(efi_config_table_type_t *arch_tables);
962 #ifdef CONFIG_EFI_ESRT
963 extern void __init efi_esrt_init(void);
964 #else
965 static inline void efi_esrt_init(void) { }
966 #endif
967 extern int efi_config_parse_tables(void *config_tables, int count, int sz,
968 efi_config_table_type_t *arch_tables);
969 extern u64 efi_get_iobase (void);
970 extern u32 efi_mem_type (unsigned long phys_addr);
971 extern u64 efi_mem_attributes (unsigned long phys_addr);
972 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
973 extern int __init efi_uart_console_only (void);
974 extern u64 efi_mem_desc_end(efi_memory_desc_t *md);
975 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md);
976 extern void efi_initialize_iomem_resources(struct resource *code_resource,
977 struct resource *data_resource, struct resource *bss_resource);
978 extern void efi_get_time(struct timespec *now);
979 extern void efi_reserve_boot_services(void);
980 extern int efi_get_fdt_params(struct efi_fdt_params *params);
981 extern struct kobject *efi_kobj;
982
983 extern int efi_reboot_quirk_mode;
984 extern bool efi_poweroff_required(void);
985
986 #ifdef CONFIG_EFI_FAKE_MEMMAP
987 extern void __init efi_fake_memmap(void);
988 #else
989 static inline void efi_fake_memmap(void) { }
990 #endif
991
992 /*
993 * efi_memattr_perm_setter - arch specific callback function passed into
994 * efi_memattr_apply_permissions() that updates the
995 * mapping permissions described by the second
996 * argument in the page tables referred to by the
997 * first argument.
998 */
999 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
1000
1001 extern int efi_memattr_init(void);
1002 extern int efi_memattr_apply_permissions(struct mm_struct *mm,
1003 efi_memattr_perm_setter fn);
1004
1005 /* Iterate through an efi_memory_map */
1006 #define for_each_efi_memory_desc_in_map(m, md) \
1007 for ((md) = (m)->map; \
1008 ((void *)(md) + (m)->desc_size) <= (m)->map_end; \
1009 (md) = (void *)(md) + (m)->desc_size)
1010
1011 /**
1012 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
1013 * @md: the efi_memory_desc_t * iterator
1014 *
1015 * Once the loop finishes @md must not be accessed.
1016 */
1017 #define for_each_efi_memory_desc(md) \
1018 for_each_efi_memory_desc_in_map(&efi.memmap, md)
1019
1020 /*
1021 * Format an EFI memory descriptor's type and attributes to a user-provided
1022 * character buffer, as per snprintf(), and return the buffer.
1023 */
1024 char * __init efi_md_typeattr_format(char *buf, size_t size,
1025 const efi_memory_desc_t *md);
1026
1027 /**
1028 * efi_range_is_wc - check the WC bit on an address range
1029 * @start: starting kvirt address
1030 * @len: length of range
1031 *
1032 * Consult the EFI memory map and make sure it's ok to set this range WC.
1033 * Returns true or false.
1034 */
1035 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
1036 {
1037 unsigned long i;
1038
1039 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
1040 unsigned long paddr = __pa(start + i);
1041 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
1042 return 0;
1043 }
1044 /* The range checked out */
1045 return 1;
1046 }
1047
1048 #ifdef CONFIG_EFI_PCDP
1049 extern int __init efi_setup_pcdp_console(char *);
1050 #endif
1051
1052 /*
1053 * We play games with efi_enabled so that the compiler will, if
1054 * possible, remove EFI-related code altogether.
1055 */
1056 #define EFI_BOOT 0 /* Were we booted from EFI? */
1057 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
1058 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
1059 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */
1060 #define EFI_64BIT 5 /* Is the firmware 64-bit? */
1061 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */
1062 #define EFI_ARCH_1 7 /* First arch-specific bit */
1063 #define EFI_DBG 8 /* Print additional debug info at runtime */
1064 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */
1065
1066 #ifdef CONFIG_EFI
1067 /*
1068 * Test whether the above EFI_* bits are enabled.
1069 */
1070 static inline bool efi_enabled(int feature)
1071 {
1072 return test_bit(feature, &efi.flags) != 0;
1073 }
1074 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
1075 #else
1076 static inline bool efi_enabled(int feature)
1077 {
1078 return false;
1079 }
1080 static inline void
1081 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
1082
1083 static inline bool
1084 efi_capsule_pending(int *reset_type)
1085 {
1086 return false;
1087 }
1088 #endif
1089
1090 extern int efi_status_to_err(efi_status_t status);
1091
1092 /*
1093 * Variable Attributes
1094 */
1095 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001
1096 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
1097 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004
1098 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
1099 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
1100 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
1101 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040
1102
1103 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \
1104 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
1105 EFI_VARIABLE_RUNTIME_ACCESS | \
1106 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
1107 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
1108 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
1109 EFI_VARIABLE_APPEND_WRITE)
1110 /*
1111 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
1112 * not including trailing NUL
1113 */
1114 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN
1115
1116 /*
1117 * The type of search to perform when calling boottime->locate_handle
1118 */
1119 #define EFI_LOCATE_ALL_HANDLES 0
1120 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1
1121 #define EFI_LOCATE_BY_PROTOCOL 2
1122
1123 /*
1124 * EFI Device Path information
1125 */
1126 #define EFI_DEV_HW 0x01
1127 #define EFI_DEV_PCI 1
1128 #define EFI_DEV_PCCARD 2
1129 #define EFI_DEV_MEM_MAPPED 3
1130 #define EFI_DEV_VENDOR 4
1131 #define EFI_DEV_CONTROLLER 5
1132 #define EFI_DEV_ACPI 0x02
1133 #define EFI_DEV_BASIC_ACPI 1
1134 #define EFI_DEV_EXPANDED_ACPI 2
1135 #define EFI_DEV_MSG 0x03
1136 #define EFI_DEV_MSG_ATAPI 1
1137 #define EFI_DEV_MSG_SCSI 2
1138 #define EFI_DEV_MSG_FC 3
1139 #define EFI_DEV_MSG_1394 4
1140 #define EFI_DEV_MSG_USB 5
1141 #define EFI_DEV_MSG_USB_CLASS 15
1142 #define EFI_DEV_MSG_I20 6
1143 #define EFI_DEV_MSG_MAC 11
1144 #define EFI_DEV_MSG_IPV4 12
1145 #define EFI_DEV_MSG_IPV6 13
1146 #define EFI_DEV_MSG_INFINIBAND 9
1147 #define EFI_DEV_MSG_UART 14
1148 #define EFI_DEV_MSG_VENDOR 10
1149 #define EFI_DEV_MEDIA 0x04
1150 #define EFI_DEV_MEDIA_HARD_DRIVE 1
1151 #define EFI_DEV_MEDIA_CDROM 2
1152 #define EFI_DEV_MEDIA_VENDOR 3
1153 #define EFI_DEV_MEDIA_FILE 4
1154 #define EFI_DEV_MEDIA_PROTOCOL 5
1155 #define EFI_DEV_BIOS_BOOT 0x05
1156 #define EFI_DEV_END_PATH 0x7F
1157 #define EFI_DEV_END_PATH2 0xFF
1158 #define EFI_DEV_END_INSTANCE 0x01
1159 #define EFI_DEV_END_ENTIRE 0xFF
1160
1161 struct efi_generic_dev_path {
1162 u8 type;
1163 u8 sub_type;
1164 u16 length;
1165 } __attribute ((packed));
1166
1167 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1168 {
1169 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1170 *addr &= PAGE_MASK;
1171 }
1172
1173 /*
1174 * EFI Variable support.
1175 *
1176 * Different firmware drivers can expose their EFI-like variables using
1177 * the following.
1178 */
1179
1180 struct efivar_operations {
1181 efi_get_variable_t *get_variable;
1182 efi_get_next_variable_t *get_next_variable;
1183 efi_set_variable_t *set_variable;
1184 efi_set_variable_t *set_variable_nonblocking;
1185 efi_query_variable_store_t *query_variable_store;
1186 };
1187
1188 struct efivars {
1189 /*
1190 * ->lock protects two things:
1191 * 1) efivarfs_list and efivars_sysfs_list
1192 * 2) ->ops calls
1193 */
1194 spinlock_t lock;
1195 struct kset *kset;
1196 struct kobject *kobject;
1197 const struct efivar_operations *ops;
1198 };
1199
1200 /*
1201 * The maximum size of VariableName + Data = 1024
1202 * Therefore, it's reasonable to save that much
1203 * space in each part of the structure,
1204 * and we use a page for reading/writing.
1205 */
1206
1207 #define EFI_VAR_NAME_LEN 1024
1208
1209 struct efi_variable {
1210 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1211 efi_guid_t VendorGuid;
1212 unsigned long DataSize;
1213 __u8 Data[1024];
1214 efi_status_t Status;
1215 __u32 Attributes;
1216 } __attribute__((packed));
1217
1218 struct efivar_entry {
1219 struct efi_variable var;
1220 struct list_head list;
1221 struct kobject kobj;
1222 bool scanning;
1223 bool deleting;
1224 };
1225
1226 struct efi_simple_text_output_protocol_32 {
1227 u32 reset;
1228 u32 output_string;
1229 u32 test_string;
1230 };
1231
1232 struct efi_simple_text_output_protocol_64 {
1233 u64 reset;
1234 u64 output_string;
1235 u64 test_string;
1236 };
1237
1238 struct efi_simple_text_output_protocol {
1239 void *reset;
1240 efi_status_t (*output_string)(void *, void *);
1241 void *test_string;
1242 };
1243
1244 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
1245 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
1246 #define PIXEL_BIT_MASK 2
1247 #define PIXEL_BLT_ONLY 3
1248 #define PIXEL_FORMAT_MAX 4
1249
1250 struct efi_pixel_bitmask {
1251 u32 red_mask;
1252 u32 green_mask;
1253 u32 blue_mask;
1254 u32 reserved_mask;
1255 };
1256
1257 struct efi_graphics_output_mode_info {
1258 u32 version;
1259 u32 horizontal_resolution;
1260 u32 vertical_resolution;
1261 int pixel_format;
1262 struct efi_pixel_bitmask pixel_information;
1263 u32 pixels_per_scan_line;
1264 } __packed;
1265
1266 struct efi_graphics_output_protocol_mode_32 {
1267 u32 max_mode;
1268 u32 mode;
1269 u32 info;
1270 u32 size_of_info;
1271 u64 frame_buffer_base;
1272 u32 frame_buffer_size;
1273 } __packed;
1274
1275 struct efi_graphics_output_protocol_mode_64 {
1276 u32 max_mode;
1277 u32 mode;
1278 u64 info;
1279 u64 size_of_info;
1280 u64 frame_buffer_base;
1281 u64 frame_buffer_size;
1282 } __packed;
1283
1284 struct efi_graphics_output_protocol_mode {
1285 u32 max_mode;
1286 u32 mode;
1287 unsigned long info;
1288 unsigned long size_of_info;
1289 u64 frame_buffer_base;
1290 unsigned long frame_buffer_size;
1291 } __packed;
1292
1293 struct efi_graphics_output_protocol_32 {
1294 u32 query_mode;
1295 u32 set_mode;
1296 u32 blt;
1297 u32 mode;
1298 };
1299
1300 struct efi_graphics_output_protocol_64 {
1301 u64 query_mode;
1302 u64 set_mode;
1303 u64 blt;
1304 u64 mode;
1305 };
1306
1307 struct efi_graphics_output_protocol {
1308 unsigned long query_mode;
1309 unsigned long set_mode;
1310 unsigned long blt;
1311 struct efi_graphics_output_protocol_mode *mode;
1312 };
1313
1314 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
1315 struct efi_graphics_output_protocol *, u32, unsigned long *,
1316 struct efi_graphics_output_mode_info **);
1317
1318 extern struct list_head efivar_sysfs_list;
1319
1320 static inline void
1321 efivar_unregister(struct efivar_entry *var)
1322 {
1323 kobject_put(&var->kobj);
1324 }
1325
1326 int efivars_register(struct efivars *efivars,
1327 const struct efivar_operations *ops,
1328 struct kobject *kobject);
1329 int efivars_unregister(struct efivars *efivars);
1330 struct kobject *efivars_kobject(void);
1331
1332 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1333 void *data, bool duplicates, struct list_head *head);
1334
1335 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1336 void efivar_entry_remove(struct efivar_entry *entry);
1337
1338 int __efivar_entry_delete(struct efivar_entry *entry);
1339 int efivar_entry_delete(struct efivar_entry *entry);
1340
1341 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1342 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1343 unsigned long *size, void *data);
1344 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1345 unsigned long *size, void *data);
1346 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1347 unsigned long size, void *data, struct list_head *head);
1348 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1349 unsigned long *size, void *data, bool *set);
1350 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1351 bool block, unsigned long size, void *data);
1352
1353 void efivar_entry_iter_begin(void);
1354 void efivar_entry_iter_end(void);
1355
1356 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1357 struct list_head *head, void *data,
1358 struct efivar_entry **prev);
1359 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1360 struct list_head *head, void *data);
1361
1362 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1363 struct list_head *head, bool remove);
1364
1365 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1366 unsigned long data_size);
1367 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1368 size_t len);
1369
1370 extern struct work_struct efivar_work;
1371 void efivar_run_worker(void);
1372
1373 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1374 int efivars_sysfs_init(void);
1375
1376 #define EFIVARS_DATA_SIZE_MAX 1024
1377
1378 #endif /* CONFIG_EFI_VARS */
1379 extern bool efi_capsule_pending(int *reset_type);
1380
1381 extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
1382 size_t size, int *reset);
1383
1384 extern int efi_capsule_update(efi_capsule_header_t *capsule,
1385 struct page **pages);
1386
1387 #ifdef CONFIG_EFI_RUNTIME_MAP
1388 int efi_runtime_map_init(struct kobject *);
1389 void efi_runtime_map_setup(void *, int, u32);
1390 int efi_get_runtime_map_size(void);
1391 int efi_get_runtime_map_desc_size(void);
1392 int efi_runtime_map_copy(void *buf, size_t bufsz);
1393 #else
1394 static inline int efi_runtime_map_init(struct kobject *kobj)
1395 {
1396 return 0;
1397 }
1398
1399 static inline void
1400 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
1401
1402 static inline int efi_get_runtime_map_size(void)
1403 {
1404 return 0;
1405 }
1406
1407 static inline int efi_get_runtime_map_desc_size(void)
1408 {
1409 return 0;
1410 }
1411
1412 static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1413 {
1414 return 0;
1415 }
1416
1417 #endif
1418
1419 /* prototypes shared between arch specific and generic stub code */
1420
1421 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg)
1422 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1423
1424 void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1425
1426 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1427 unsigned long addr);
1428
1429 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1430 efi_loaded_image_t *image, int *cmd_line_len);
1431
1432 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1433 efi_memory_desc_t **map,
1434 unsigned long *map_size,
1435 unsigned long *desc_size,
1436 u32 *desc_ver,
1437 unsigned long *key_ptr);
1438
1439 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1440 unsigned long size, unsigned long align,
1441 unsigned long *addr);
1442
1443 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1444 unsigned long size, unsigned long align,
1445 unsigned long *addr, unsigned long max);
1446
1447 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1448 unsigned long *image_addr,
1449 unsigned long image_size,
1450 unsigned long alloc_size,
1451 unsigned long preferred_addr,
1452 unsigned long alignment);
1453
1454 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1455 efi_loaded_image_t *image,
1456 char *cmd_line, char *option_string,
1457 unsigned long max_addr,
1458 unsigned long *load_addr,
1459 unsigned long *load_size);
1460
1461 efi_status_t efi_parse_options(char *cmdline);
1462
1463 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
1464 struct screen_info *si, efi_guid_t *proto,
1465 unsigned long size);
1466
1467 bool efi_runtime_disabled(void);
1468 #endif /* _LINUX_EFI_H */
Linux kernel - Deliverables
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