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