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
  25 #include <asm/page.h>
  26
  27 #define EFI_SUCCESS             0
  28 #define EFI_LOAD_ERROR          ( 1 | (1UL << (BITS_PER_LONG-1)))
  29 #define EFI_INVALID_PARAMETER   ( 2 | (1UL << (BITS_PER_LONG-1)))
  30 #define EFI_UNSUPPORTED         ( 3 | (1UL << (BITS_PER_LONG-1)))
  31 #define EFI_BAD_BUFFER_SIZE     ( 4 | (1UL << (BITS_PER_LONG-1)))
  32 #define EFI_BUFFER_TOO_SMALL    ( 5 | (1UL << (BITS_PER_LONG-1)))
  33 #define EFI_NOT_READY           ( 6 | (1UL << (BITS_PER_LONG-1)))
  34 #define EFI_DEVICE_ERROR        ( 7 | (1UL << (BITS_PER_LONG-1)))
  35 #define EFI_WRITE_PROTECTED     ( 8 | (1UL << (BITS_PER_LONG-1)))
  36 #define EFI_OUT_OF_RESOURCES    ( 9 | (1UL << (BITS_PER_LONG-1)))
  37 #define EFI_NOT_FOUND           (14 | (1UL << (BITS_PER_LONG-1)))
  38 #define EFI_SECURITY_VIOLATION  (26 | (1UL << (BITS_PER_LONG-1)))
  39
  40 typedef unsigned long efi_status_t;
  41 typedef u8 efi_bool_t;
  42 typedef u16 efi_char16_t;               /* UNICODE character */
  43 typedef u64 efi_physical_addr_t;
  44 typedef void *efi_handle_t;
  45
  46
  47 typedef struct {
  48         u8 b[16];
  49 } efi_guid_t;
  50
  51 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
  52 ((efi_guid_t) \
  53 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \
  54   (b) & 0xff, ((b) >> 8) & 0xff, \
  55   (c) & 0xff, ((c) >> 8) & 0xff, \
  56   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }})
  57
  58 /*
  59  * Generic EFI table header
  60  */
  61 typedef struct {
  62         u64 signature;
  63         u32 revision;
  64         u32 headersize;
  65         u32 crc32;
  66         u32 reserved;
  67 } efi_table_hdr_t;
  68
  69 /*
  70  * Memory map descriptor:
  71  */
  72
  73 /* Memory types: */
  74 #define EFI_RESERVED_TYPE                0
  75 #define EFI_LOADER_CODE                  1
  76 #define EFI_LOADER_DATA                  2
  77 #define EFI_BOOT_SERVICES_CODE           3
  78 #define EFI_BOOT_SERVICES_DATA           4
  79 #define EFI_RUNTIME_SERVICES_CODE        5
  80 #define EFI_RUNTIME_SERVICES_DATA        6
  81 #define EFI_CONVENTIONAL_MEMORY          7
  82 #define EFI_UNUSABLE_MEMORY              8
  83 #define EFI_ACPI_RECLAIM_MEMORY          9
  84 #define EFI_ACPI_MEMORY_NVS             10
  85 #define EFI_MEMORY_MAPPED_IO            11
  86 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12
  87 #define EFI_PAL_CODE                    13
  88 #define EFI_MAX_MEMORY_TYPE             14
  89
  90 /* Attribute values: */
  91 #define EFI_MEMORY_UC           ((u64)0x0000000000000001ULL)    /* uncached */
  92 #define EFI_MEMORY_WC           ((u64)0x0000000000000002ULL)    /* write-coalescing */
  93 #define EFI_MEMORY_WT           ((u64)0x0000000000000004ULL)    /* write-through */
  94 #define EFI_MEMORY_WB           ((u64)0x0000000000000008ULL)    /* write-back */
  95 #define EFI_MEMORY_WP           ((u64)0x0000000000001000ULL)    /* write-protect */
  96 #define EFI_MEMORY_RP           ((u64)0x0000000000002000ULL)    /* read-protect */
  97 #define EFI_MEMORY_XP           ((u64)0x0000000000004000ULL)    /* execute-protect */
  98 #define EFI_MEMORY_RUNTIME      ((u64)0x8000000000000000ULL)    /* range requires runtime mapping */
  99 #define EFI_MEMORY_DESCRIPTOR_VERSION   1
 100
 101 #define EFI_PAGE_SHIFT          12
 102 #define EFI_PAGE_SIZE           (1UL << EFI_PAGE_SHIFT)
 103
 104 typedef struct {
 105         u32 type;
 106         u32 pad;
 107         u64 phys_addr;
 108         u64 virt_addr;
 109         u64 num_pages;
 110         u64 attribute;
 111 } efi_memory_desc_t;
 112
 113 typedef struct {
 114         efi_guid_t guid;
 115         u32 headersize;
 116         u32 flags;
 117         u32 imagesize;
 118 } efi_capsule_header_t;
 119
 120 struct efi_boot_memmap {
 121         efi_memory_desc_t       **map;
 122         unsigned long           *map_size;
 123         unsigned long           *desc_size;
 124         u32                     *desc_ver;
 125         unsigned long           *key_ptr;
 126         unsigned long           *buff_size;
 127 };
 128
 129 /*
 130  * Allocation types for calls to boottime->allocate_pages.
 131  */
 132 #define EFI_ALLOCATE_ANY_PAGES          0
 133 #define EFI_ALLOCATE_MAX_ADDRESS        1
 134 #define EFI_ALLOCATE_ADDRESS            2
 135 #define EFI_MAX_ALLOCATE_TYPE           3
 136
 137 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
 138
 139 /*
 140  * Types and defines for Time Services
 141  */
 142 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
 143 #define EFI_TIME_IN_DAYLIGHT     0x2
 144 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
 145
 146 typedef struct {
 147         u16 year;
 148         u8 month;
 149         u8 day;
 150         u8 hour;
 151         u8 minute;
 152         u8 second;
 153         u8 pad1;
 154         u32 nanosecond;
 155         s16 timezone;
 156         u8 daylight;
 157         u8 pad2;
 158 } efi_time_t;
 159
 160 typedef struct {
 161         u32 resolution;
 162         u32 accuracy;
 163         u8 sets_to_zero;
 164 } efi_time_cap_t;
 165
 166 typedef struct {
 167         efi_table_hdr_t hdr;
 168         u32 raise_tpl;
 169         u32 restore_tpl;
 170         u32 allocate_pages;
 171         u32 free_pages;
 172         u32 get_memory_map;
 173         u32 allocate_pool;
 174         u32 free_pool;
 175         u32 create_event;
 176         u32 set_timer;
 177         u32 wait_for_event;
 178         u32 signal_event;
 179         u32 close_event;
 180         u32 check_event;
 181         u32 install_protocol_interface;
 182         u32 reinstall_protocol_interface;
 183         u32 uninstall_protocol_interface;
 184         u32 handle_protocol;
 185         u32 __reserved;
 186         u32 register_protocol_notify;
 187         u32 locate_handle;
 188         u32 locate_device_path;
 189         u32 install_configuration_table;
 190         u32 load_image;
 191         u32 start_image;
 192         u32 exit;
 193         u32 unload_image;
 194         u32 exit_boot_services;
 195         u32 get_next_monotonic_count;
 196         u32 stall;
 197         u32 set_watchdog_timer;
 198         u32 connect_controller;
 199         u32 disconnect_controller;
 200         u32 open_protocol;
 201         u32 close_protocol;
 202         u32 open_protocol_information;
 203         u32 protocols_per_handle;
 204         u32 locate_handle_buffer;
 205         u32 locate_protocol;
 206         u32 install_multiple_protocol_interfaces;
 207         u32 uninstall_multiple_protocol_interfaces;
 208         u32 calculate_crc32;
 209         u32 copy_mem;
 210         u32 set_mem;
 211         u32 create_event_ex;
 212 } __packed efi_boot_services_32_t;
 213
 214 typedef struct {
 215         efi_table_hdr_t hdr;
 216         u64 raise_tpl;
 217         u64 restore_tpl;
 218         u64 allocate_pages;
 219         u64 free_pages;
 220         u64 get_memory_map;
 221         u64 allocate_pool;
 222         u64 free_pool;
 223         u64 create_event;
 224         u64 set_timer;
 225         u64 wait_for_event;
 226         u64 signal_event;
 227         u64 close_event;
 228         u64 check_event;
 229         u64 install_protocol_interface;
 230         u64 reinstall_protocol_interface;
 231         u64 uninstall_protocol_interface;
 232         u64 handle_protocol;
 233         u64 __reserved;
 234         u64 register_protocol_notify;
 235         u64 locate_handle;
 236         u64 locate_device_path;
 237         u64 install_configuration_table;
 238         u64 load_image;
 239         u64 start_image;
 240         u64 exit;
 241         u64 unload_image;
 242         u64 exit_boot_services;
 243         u64 get_next_monotonic_count;
 244         u64 stall;
 245         u64 set_watchdog_timer;
 246         u64 connect_controller;
 247         u64 disconnect_controller;
 248         u64 open_protocol;
 249         u64 close_protocol;
 250         u64 open_protocol_information;
 251         u64 protocols_per_handle;
 252         u64 locate_handle_buffer;
 253         u64 locate_protocol;
 254         u64 install_multiple_protocol_interfaces;
 255         u64 uninstall_multiple_protocol_interfaces;
 256         u64 calculate_crc32;
 257         u64 copy_mem;
 258         u64 set_mem;
 259         u64 create_event_ex;
 260 } __packed efi_boot_services_64_t;
 261
 262 /*
 263  * EFI Boot Services table
 264  */
 265 typedef struct {
 266         efi_table_hdr_t hdr;
 267         void *raise_tpl;
 268         void *restore_tpl;
 269         efi_status_t (*allocate_pages)(int, int, unsigned long,
 270                                        efi_physical_addr_t *);
 271         efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
 272         efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
 273                                        unsigned long *, u32 *);
 274         efi_status_t (*allocate_pool)(int, unsigned long, void **);
 275         efi_status_t (*free_pool)(void *);
 276         void *create_event;
 277         void *set_timer;
 278         void *wait_for_event;
 279         void *signal_event;
 280         void *close_event;
 281         void *check_event;
 282         void *install_protocol_interface;
 283         void *reinstall_protocol_interface;
 284         void *uninstall_protocol_interface;
 285         efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
 286         void *__reserved;
 287         void *register_protocol_notify;
 288         void *locate_handle;
 289         void *locate_device_path;
 290         void *install_configuration_table;
 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         void *locate_protocol;
 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         u64 romsize;
 372         u32 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         u64 romsize;
 392         u64 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, unsigned long size);
 533
 534 /*
 535  *  EFI Configuration Table and GUID definitions
 536  */
 537 #define NULL_GUID \
 538     EFI_GUID(  0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
 539
 540 #define MPS_TABLE_GUID    \
 541     EFI_GUID(  0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 542
 543 #define ACPI_TABLE_GUID    \
 544     EFI_GUID(  0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 545
 546 #define ACPI_20_TABLE_GUID    \
 547     EFI_GUID(  0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
 548
 549 #define SMBIOS_TABLE_GUID    \
 550     EFI_GUID(  0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 551
 552 #define SAL_SYSTEM_TABLE_GUID    \
 553     EFI_GUID(  0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 554
 555 #define HCDP_TABLE_GUID \
 556     EFI_GUID(  0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
 557
 558 #define UGA_IO_PROTOCOL_GUID \
 559     EFI_GUID(  0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
 560
 561 #define EFI_GLOBAL_VARIABLE_GUID \
 562     EFI_GUID(  0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
 563
 564 #define UV_SYSTEM_TABLE_GUID \
 565     EFI_GUID(  0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
 566
 567 #define LINUX_EFI_CRASH_GUID \
 568     EFI_GUID(  0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
 569
 570 #define LOADED_IMAGE_PROTOCOL_GUID \
 571     EFI_GUID(  0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 572
 573 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
 574     EFI_GUID(  0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
 575
 576 #define EFI_UGA_PROTOCOL_GUID \
 577     EFI_GUID(  0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
 578
 579 #define EFI_PCI_IO_PROTOCOL_GUID \
 580     EFI_GUID(  0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
 581
 582 #define EFI_FILE_INFO_ID \
 583     EFI_GUID(  0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 584
 585 #define EFI_FILE_SYSTEM_GUID \
 586     EFI_GUID(  0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 587
 588 #define DEVICE_TREE_GUID \
 589     EFI_GUID(  0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
 590
 591 typedef struct {
 592         efi_guid_t guid;
 593         u64 table;
 594 } efi_config_table_64_t;
 595
 596 typedef struct {
 597         efi_guid_t guid;
 598         u32 table;
 599 } efi_config_table_32_t;
 600
 601 typedef struct {
 602         efi_guid_t guid;
 603         unsigned long table;
 604 } efi_config_table_t;
 605
 606 typedef struct {
 607         efi_guid_t guid;
 608         const char *name;
 609         unsigned long *ptr;
 610 } efi_config_table_type_t;
 611
 612 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
 613
 614 #define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
 615 #define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
 616 #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
 617 #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
 618 #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
 619 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
 620
 621 typedef struct {
 622         efi_table_hdr_t hdr;
 623         u64 fw_vendor;  /* physical addr of CHAR16 vendor string */
 624         u32 fw_revision;
 625         u32 __pad1;
 626         u64 con_in_handle;
 627         u64 con_in;
 628         u64 con_out_handle;
 629         u64 con_out;
 630         u64 stderr_handle;
 631         u64 stderr;
 632         u64 runtime;
 633         u64 boottime;
 634         u32 nr_tables;
 635         u32 __pad2;
 636         u64 tables;
 637 } efi_system_table_64_t;
 638
 639 typedef struct {
 640         efi_table_hdr_t hdr;
 641         u32 fw_vendor;  /* physical addr of CHAR16 vendor string */
 642         u32 fw_revision;
 643         u32 con_in_handle;
 644         u32 con_in;
 645         u32 con_out_handle;
 646         u32 con_out;
 647         u32 stderr_handle;
 648         u32 stderr;
 649         u32 runtime;
 650         u32 boottime;
 651         u32 nr_tables;
 652         u32 tables;
 653 } efi_system_table_32_t;
 654
 655 typedef struct {
 656         efi_table_hdr_t hdr;
 657         unsigned long fw_vendor;        /* physical addr of CHAR16 vendor string */
 658         u32 fw_revision;
 659         unsigned long con_in_handle;
 660         unsigned long con_in;
 661         unsigned long con_out_handle;
 662         unsigned long con_out;
 663         unsigned long stderr_handle;
 664         unsigned long stderr;
 665         efi_runtime_services_t *runtime;
 666         efi_boot_services_t *boottime;
 667         unsigned long nr_tables;
 668         unsigned long tables;
 669 } efi_system_table_t;
 670
 671 struct efi_memory_map {
 672         void *phys_map;
 673         void *map;
 674         void *map_end;
 675         int nr_map;
 676         unsigned long desc_version;
 677         unsigned long desc_size;
 678 };
 679
 680 struct efi_fdt_params {
 681         u64 system_table;
 682         u64 mmap;
 683         u32 mmap_size;
 684         u32 desc_size;
 685         u32 desc_ver;
 686 };
 687
 688 typedef struct {
 689         u32 revision;
 690         u32 parent_handle;
 691         u32 system_table;
 692         u32 device_handle;
 693         u32 file_path;
 694         u32 reserved;
 695         u32 load_options_size;
 696         u32 load_options;
 697         u32 image_base;
 698         __aligned_u64 image_size;
 699         unsigned int image_code_type;
 700         unsigned int image_data_type;
 701         unsigned long unload;
 702 } efi_loaded_image_32_t;
 703
 704 typedef struct {
 705         u32 revision;
 706         u64 parent_handle;
 707         u64 system_table;
 708         u64 device_handle;
 709         u64 file_path;
 710         u64 reserved;
 711         u32 load_options_size;
 712         u64 load_options;
 713         u64 image_base;
 714         __aligned_u64 image_size;
 715         unsigned int image_code_type;
 716         unsigned int image_data_type;
 717         unsigned long unload;
 718 } efi_loaded_image_64_t;
 719
 720 typedef struct {
 721         u32 revision;
 722         void *parent_handle;
 723         efi_system_table_t *system_table;
 724         void *device_handle;
 725         void *file_path;
 726         void *reserved;
 727         u32 load_options_size;
 728         void *load_options;
 729         void *image_base;
 730         __aligned_u64 image_size;
 731         unsigned int image_code_type;
 732         unsigned int image_data_type;
 733         unsigned long unload;
 734 } efi_loaded_image_t;
 735
 736
 737 typedef struct {
 738         u64 size;
 739         u64 file_size;
 740         u64 phys_size;
 741         efi_time_t create_time;
 742         efi_time_t last_access_time;
 743         efi_time_t modification_time;
 744         __aligned_u64 attribute;
 745         efi_char16_t filename[1];
 746 } efi_file_info_t;
 747
 748 typedef struct {
 749         u64 revision;
 750         u32 open;
 751         u32 close;
 752         u32 delete;
 753         u32 read;
 754         u32 write;
 755         u32 get_position;
 756         u32 set_position;
 757         u32 get_info;
 758         u32 set_info;
 759         u32 flush;
 760 } efi_file_handle_32_t;
 761
 762 typedef struct {
 763         u64 revision;
 764         u64 open;
 765         u64 close;
 766         u64 delete;
 767         u64 read;
 768         u64 write;
 769         u64 get_position;
 770         u64 set_position;
 771         u64 get_info;
 772         u64 set_info;
 773         u64 flush;
 774 } efi_file_handle_64_t;
 775
 776 typedef struct _efi_file_handle {
 777         u64 revision;
 778         efi_status_t (*open)(struct _efi_file_handle *,
 779                              struct _efi_file_handle **,
 780                              efi_char16_t *, u64, u64);
 781         efi_status_t (*close)(struct _efi_file_handle *);
 782         void *delete;
 783         efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
 784                              void *);
 785         void *write;
 786         void *get_position;
 787         void *set_position;
 788         efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
 789                         unsigned long *, void *);
 790         void *set_info;
 791         void *flush;
 792 } efi_file_handle_t;
 793
 794 typedef struct _efi_file_io_interface {
 795         u64 revision;
 796         int (*open_volume)(struct _efi_file_io_interface *,
 797                            efi_file_handle_t **);
 798 } efi_file_io_interface_t;
 799
 800 #define EFI_FILE_MODE_READ      0x0000000000000001
 801 #define EFI_FILE_MODE_WRITE     0x0000000000000002
 802 #define EFI_FILE_MODE_CREATE    0x8000000000000000
 803
 804 #define EFI_INVALID_TABLE_ADDR          (~0UL)
 805
 806 /*
 807  * All runtime access to EFI goes through this structure:
 808  */
 809 extern struct efi {
 810         efi_system_table_t *systab;     /* EFI system table */
 811         unsigned int runtime_version;   /* Runtime services version */
 812         unsigned long mps;              /* MPS table */
 813         unsigned long acpi;             /* ACPI table  (IA64 ext 0.71) */
 814         unsigned long acpi20;           /* ACPI table  (ACPI 2.0) */
 815         unsigned long smbios;           /* SM BIOS table */
 816         unsigned long sal_systab;       /* SAL system table */
 817         unsigned long boot_info;        /* boot info table */
 818         unsigned long hcdp;             /* HCDP table */
 819         unsigned long uga;              /* UGA table */
 820         unsigned long uv_systab;        /* UV system table */
 821         unsigned long fw_vendor;        /* fw_vendor */
 822         unsigned long runtime;          /* runtime table */
 823         unsigned long config_table;     /* config tables */
 824         efi_get_time_t *get_time;
 825         efi_set_time_t *set_time;
 826         efi_get_wakeup_time_t *get_wakeup_time;
 827         efi_set_wakeup_time_t *set_wakeup_time;
 828         efi_get_variable_t *get_variable;
 829         efi_get_next_variable_t *get_next_variable;
 830         efi_set_variable_t *set_variable;
 831         efi_query_variable_info_t *query_variable_info;
 832         efi_update_capsule_t *update_capsule;
 833         efi_query_capsule_caps_t *query_capsule_caps;
 834         efi_get_next_high_mono_count_t *get_next_high_mono_count;
 835         efi_reset_system_t *reset_system;
 836         efi_set_virtual_address_map_t *set_virtual_address_map;
 837         struct efi_memory_map *memmap;
 838         unsigned long flags;
 839 } efi;
 840
 841 static inline int
 842 efi_guidcmp (efi_guid_t left, efi_guid_t right)
 843 {
 844         return memcmp(&left, &right, sizeof (efi_guid_t));
 845 }
 846
 847 static inline char *
 848 efi_guid_unparse(efi_guid_t *guid, char *out)
 849 {
 850         sprintf(out, "%pUl", guid->b);
 851         return out;
 852 }
 853
 854 extern void efi_init (void);
 855 extern void *efi_get_pal_addr (void);
 856 extern void efi_map_pal_code (void);
 857 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
 858 extern void efi_gettimeofday (struct timespec *ts);
 859 extern void efi_enter_virtual_mode (void);      /* switch EFI to virtual mode, if possible */
 860 #ifdef CONFIG_X86
 861 extern void efi_late_init(void);
 862 extern void efi_free_boot_services(void);
 863 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
 864 #else
 865 static inline void efi_late_init(void) {}
 866 static inline void efi_free_boot_services(void) {}
 867
 868 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
 869 {
 870         return EFI_SUCCESS;
 871 }
 872 #endif
 873 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
 874 extern int efi_config_init(efi_config_table_type_t *arch_tables);
 875 extern u64 efi_get_iobase (void);
 876 extern u32 efi_mem_type (unsigned long phys_addr);
 877 extern u64 efi_mem_attributes (unsigned long phys_addr);
 878 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
 879 extern int __init efi_uart_console_only (void);
 880 extern void efi_initialize_iomem_resources(struct resource *code_resource,
 881                 struct resource *data_resource, struct resource *bss_resource);
 882 extern void efi_get_time(struct timespec *now);
 883 extern int efi_set_rtc_mmss(const struct timespec *now);
 884 extern void efi_reserve_boot_services(void);
 885 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
 886 extern struct efi_memory_map memmap;
 887
 888 extern int efi_reboot_quirk_mode;
 889 extern bool efi_poweroff_required(void);
 890
 891 /* Iterate through an efi_memory_map */
 892 #define for_each_efi_memory_desc(m, md)                                    \
 893         for ((md) = (m)->map;                                              \
 894              (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
 895              (md) = (void *)(md) + (m)->desc_size)
 896
 897 /**
 898  * efi_range_is_wc - check the WC bit on an address range
 899  * @start: starting kvirt address
 900  * @len: length of range
 901  *
 902  * Consult the EFI memory map and make sure it's ok to set this range WC.
 903  * Returns true or false.
 904  */
 905 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
 906 {
 907         unsigned long i;
 908
 909         for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
 910                 unsigned long paddr = __pa(start + i);
 911                 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
 912                         return 0;
 913         }
 914         /* The range checked out */
 915         return 1;
 916 }
 917
 918 #ifdef CONFIG_EFI_PCDP
 919 extern int __init efi_setup_pcdp_console(char *);
 920 #endif
 921
 922 /*
 923  * We play games with efi_enabled so that the compiler will, if
 924  * possible, remove EFI-related code altogether.
 925  */
 926 #define EFI_BOOT                0       /* Were we booted from EFI? */
 927 #define EFI_SYSTEM_TABLES       1       /* Can we use EFI system tables? */
 928 #define EFI_CONFIG_TABLES       2       /* Can we use EFI config tables? */
 929 #define EFI_RUNTIME_SERVICES    3       /* Can we use runtime services? */
 930 #define EFI_MEMMAP              4       /* Can we use EFI memory map? */
 931 #define EFI_64BIT               5       /* Is the firmware 64-bit? */
 932 #define EFI_ARCH_1              6       /* First arch-specific bit */
 933
 934 #ifdef CONFIG_EFI
 935 /*
 936  * Test whether the above EFI_* bits are enabled.
 937  */
 938 static inline bool efi_enabled(int feature)
 939 {
 940         return test_bit(feature, &efi.flags) != 0;
 941 }
 942 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
 943 #else
 944 static inline bool efi_enabled(int feature)
 945 {
 946         return false;
 947 }
 948 static inline void
 949 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
 950 #endif
 951
 952 /*
 953  * Variable Attributes
 954  */
 955 #define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
 956 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
 957 #define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004
 958 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
 959 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
 960 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
 961 #define EFI_VARIABLE_APPEND_WRITE       0x0000000000000040
 962
 963 #define EFI_VARIABLE_MASK       (EFI_VARIABLE_NON_VOLATILE | \
 964                                 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 965                                 EFI_VARIABLE_RUNTIME_ACCESS | \
 966                                 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
 967                                 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
 968                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
 969                                 EFI_VARIABLE_APPEND_WRITE)
 970 /*
 971  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
 972  * not including trailing NUL
 973  */
 974 #define EFI_VARIABLE_GUID_LEN 36
 975
 976 /*
 977  * The type of search to perform when calling boottime->locate_handle
 978  */
 979 #define EFI_LOCATE_ALL_HANDLES                  0
 980 #define EFI_LOCATE_BY_REGISTER_NOTIFY           1
 981 #define EFI_LOCATE_BY_PROTOCOL                  2
 982
 983 /*
 984  * EFI Device Path information
 985  */
 986 #define EFI_DEV_HW                      0x01
 987 #define  EFI_DEV_PCI                             1
 988 #define  EFI_DEV_PCCARD                          2
 989 #define  EFI_DEV_MEM_MAPPED                      3
 990 #define  EFI_DEV_VENDOR                          4
 991 #define  EFI_DEV_CONTROLLER                      5
 992 #define EFI_DEV_ACPI                    0x02
 993 #define   EFI_DEV_BASIC_ACPI                     1
 994 #define   EFI_DEV_EXPANDED_ACPI                  2
 995 #define EFI_DEV_MSG                     0x03
 996 #define   EFI_DEV_MSG_ATAPI                      1
 997 #define   EFI_DEV_MSG_SCSI                       2
 998 #define   EFI_DEV_MSG_FC                         3
 999 #define   EFI_DEV_MSG_1394                       4
1000 #define   EFI_DEV_MSG_USB                        5
1001 #define   EFI_DEV_MSG_USB_CLASS                 15
1002 #define   EFI_DEV_MSG_I20                        6
1003 #define   EFI_DEV_MSG_MAC                       11
1004 #define   EFI_DEV_MSG_IPV4                      12
1005 #define   EFI_DEV_MSG_IPV6                      13
1006 #define   EFI_DEV_MSG_INFINIBAND                 9
1007 #define   EFI_DEV_MSG_UART                      14
1008 #define   EFI_DEV_MSG_VENDOR                    10
1009 #define EFI_DEV_MEDIA                   0x04
1010 #define   EFI_DEV_MEDIA_HARD_DRIVE               1
1011 #define   EFI_DEV_MEDIA_CDROM                    2
1012 #define   EFI_DEV_MEDIA_VENDOR                   3
1013 #define   EFI_DEV_MEDIA_FILE                     4
1014 #define   EFI_DEV_MEDIA_PROTOCOL                 5
1015 #define EFI_DEV_BIOS_BOOT               0x05
1016 #define EFI_DEV_END_PATH                0x7F
1017 #define EFI_DEV_END_PATH2               0xFF
1018 #define   EFI_DEV_END_INSTANCE                  0x01
1019 #define   EFI_DEV_END_ENTIRE                    0xFF
1020
1021 struct efi_generic_dev_path {
1022         u8 type;
1023         u8 sub_type;
1024         u16 length;
1025 } __attribute ((packed));
1026
1027 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1028 {
1029         *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1030         *addr &= PAGE_MASK;
1031 }
1032
1033 /*
1034  * EFI Variable support.
1035  *
1036  * Different firmware drivers can expose their EFI-like variables using
1037  * the following.
1038  */
1039
1040 struct efivar_operations {
1041         efi_get_variable_t *get_variable;
1042         efi_get_next_variable_t *get_next_variable;
1043         efi_set_variable_t *set_variable;
1044         efi_query_variable_store_t *query_variable_store;
1045 };
1046
1047 struct efivars {
1048         /*
1049          * ->lock protects two things:
1050          * 1) ->list - adds, removals, reads, writes
1051          * 2) ops.[gs]et_variable() calls.
1052          * It must not be held when creating sysfs entries or calling kmalloc.
1053          * ops.get_next_variable() is only called from register_efivars()
1054          * or efivar_update_sysfs_entries(),
1055          * which is protected by the BKL, so that path is safe.
1056          */
1057         spinlock_t lock;
1058         struct kset *kset;
1059         struct kobject *kobject;
1060         const struct efivar_operations *ops;
1061 };
1062
1063 /*
1064  * The maximum size of VariableName + Data = 1024
1065  * Therefore, it's reasonable to save that much
1066  * space in each part of the structure,
1067  * and we use a page for reading/writing.
1068  */
1069
1070 #define EFI_VAR_NAME_LEN        1024
1071
1072 struct efi_variable {
1073         efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1074         efi_guid_t    VendorGuid;
1075         unsigned long DataSize;
1076         __u8          Data[1024];
1077         efi_status_t  Status;
1078         __u32         Attributes;
1079 } __attribute__((packed));
1080
1081 struct efivar_entry {
1082         struct efi_variable var;
1083         struct list_head list;
1084         struct kobject kobj;
1085         bool scanning;
1086         bool deleting;
1087 };
1088
1089 struct efi_simple_text_output_protocol_32 {
1090         u32 reset;
1091         u32 output_string;
1092         u32 test_string;
1093 };
1094
1095 struct efi_simple_text_output_protocol_64 {
1096         u64 reset;
1097         u64 output_string;
1098         u64 test_string;
1099 };
1100
1101 struct efi_simple_text_output_protocol {
1102         void *reset;
1103         efi_status_t (*output_string)(void *, void *);
1104         void *test_string;
1105 };
1106
1107 extern struct list_head efivar_sysfs_list;
1108
1109 static inline void
1110 efivar_unregister(struct efivar_entry *var)
1111 {
1112         kobject_put(&var->kobj);
1113 }
1114
1115 int efivars_register(struct efivars *efivars,
1116                      const struct efivar_operations *ops,
1117                      struct kobject *kobject);
1118 int efivars_unregister(struct efivars *efivars);
1119 struct kobject *efivars_kobject(void);
1120
1121 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1122                 void *data, bool atomic, bool duplicates,
1123                 struct list_head *head);
1124
1125 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1126 void efivar_entry_remove(struct efivar_entry *entry);
1127
1128 int __efivar_entry_delete(struct efivar_entry *entry);
1129 int efivar_entry_delete(struct efivar_entry *entry);
1130
1131 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1132 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1133                        unsigned long *size, void *data);
1134 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1135                      unsigned long *size, void *data);
1136 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1137                      unsigned long size, void *data, struct list_head *head);
1138 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1139                               unsigned long *size, void *data, bool *set);
1140 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1141                           bool block, unsigned long size, void *data);
1142
1143 void efivar_entry_iter_begin(void);
1144 void efivar_entry_iter_end(void);
1145
1146 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1147                         struct list_head *head, void *data,
1148                         struct efivar_entry **prev);
1149 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1150                       struct list_head *head, void *data);
1151
1152 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1153                                        struct list_head *head, bool remove);
1154
1155 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data,
1156                      unsigned long data_size);
1157 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name,
1158                                   size_t len);
1159
1160 extern struct work_struct efivar_work;
1161 void efivar_run_worker(void);
1162
1163 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1164 int efivars_sysfs_init(void);
1165
1166 #define EFIVARS_DATA_SIZE_MAX 1024
1167
1168 #endif /* CONFIG_EFI_VARS */
1169
1170 #ifdef CONFIG_EFI_RUNTIME_MAP
1171 int efi_runtime_map_init(struct kobject *);
1172 void efi_runtime_map_setup(void *, int, u32);
1173 #else
1174 static inline int efi_runtime_map_init(struct kobject *kobj)
1175 {
1176         return 0;
1177 }
1178
1179 static inline void
1180 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
1181 #endif
1182
1183 #endif /* _LINUX_EFI_H */