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_UCE          ((u64)0x0000000000000010ULL)    /* uncached, exported */
  96 #define EFI_MEMORY_WP           ((u64)0x0000000000001000ULL)    /* write-protect */
  97 #define EFI_MEMORY_RP           ((u64)0x0000000000002000ULL)    /* read-protect */
  98 #define EFI_MEMORY_XP           ((u64)0x0000000000004000ULL)    /* execute-protect */
  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  * Allocation types for calls to boottime->allocate_pages.
 123  */
 124 #define EFI_ALLOCATE_ANY_PAGES          0
 125 #define EFI_ALLOCATE_MAX_ADDRESS        1
 126 #define EFI_ALLOCATE_ADDRESS            2
 127 #define EFI_MAX_ALLOCATE_TYPE           3
 128
 129 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
 130
 131 /*
 132  * Types and defines for Time Services
 133  */
 134 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
 135 #define EFI_TIME_IN_DAYLIGHT     0x2
 136 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
 137
 138 typedef struct {
 139         u16 year;
 140         u8 month;
 141         u8 day;
 142         u8 hour;
 143         u8 minute;
 144         u8 second;
 145         u8 pad1;
 146         u32 nanosecond;
 147         s16 timezone;
 148         u8 daylight;
 149         u8 pad2;
 150 } efi_time_t;
 151
 152 typedef struct {
 153         u32 resolution;
 154         u32 accuracy;
 155         u8 sets_to_zero;
 156 } efi_time_cap_t;
 157
 158 typedef struct {
 159         efi_table_hdr_t hdr;
 160         u32 raise_tpl;
 161         u32 restore_tpl;
 162         u32 allocate_pages;
 163         u32 free_pages;
 164         u32 get_memory_map;
 165         u32 allocate_pool;
 166         u32 free_pool;
 167         u32 create_event;
 168         u32 set_timer;
 169         u32 wait_for_event;
 170         u32 signal_event;
 171         u32 close_event;
 172         u32 check_event;
 173         u32 install_protocol_interface;
 174         u32 reinstall_protocol_interface;
 175         u32 uninstall_protocol_interface;
 176         u32 handle_protocol;
 177         u32 __reserved;
 178         u32 register_protocol_notify;
 179         u32 locate_handle;
 180         u32 locate_device_path;
 181         u32 install_configuration_table;
 182         u32 load_image;
 183         u32 start_image;
 184         u32 exit;
 185         u32 unload_image;
 186         u32 exit_boot_services;
 187         u32 get_next_monotonic_count;
 188         u32 stall;
 189         u32 set_watchdog_timer;
 190         u32 connect_controller;
 191         u32 disconnect_controller;
 192         u32 open_protocol;
 193         u32 close_protocol;
 194         u32 open_protocol_information;
 195         u32 protocols_per_handle;
 196         u32 locate_handle_buffer;
 197         u32 locate_protocol;
 198         u32 install_multiple_protocol_interfaces;
 199         u32 uninstall_multiple_protocol_interfaces;
 200         u32 calculate_crc32;
 201         u32 copy_mem;
 202         u32 set_mem;
 203         u32 create_event_ex;
 204 } __packed efi_boot_services_32_t;
 205
 206 typedef struct {
 207         efi_table_hdr_t hdr;
 208         u64 raise_tpl;
 209         u64 restore_tpl;
 210         u64 allocate_pages;
 211         u64 free_pages;
 212         u64 get_memory_map;
 213         u64 allocate_pool;
 214         u64 free_pool;
 215         u64 create_event;
 216         u64 set_timer;
 217         u64 wait_for_event;
 218         u64 signal_event;
 219         u64 close_event;
 220         u64 check_event;
 221         u64 install_protocol_interface;
 222         u64 reinstall_protocol_interface;
 223         u64 uninstall_protocol_interface;
 224         u64 handle_protocol;
 225         u64 __reserved;
 226         u64 register_protocol_notify;
 227         u64 locate_handle;
 228         u64 locate_device_path;
 229         u64 install_configuration_table;
 230         u64 load_image;
 231         u64 start_image;
 232         u64 exit;
 233         u64 unload_image;
 234         u64 exit_boot_services;
 235         u64 get_next_monotonic_count;
 236         u64 stall;
 237         u64 set_watchdog_timer;
 238         u64 connect_controller;
 239         u64 disconnect_controller;
 240         u64 open_protocol;
 241         u64 close_protocol;
 242         u64 open_protocol_information;
 243         u64 protocols_per_handle;
 244         u64 locate_handle_buffer;
 245         u64 locate_protocol;
 246         u64 install_multiple_protocol_interfaces;
 247         u64 uninstall_multiple_protocol_interfaces;
 248         u64 calculate_crc32;
 249         u64 copy_mem;
 250         u64 set_mem;
 251         u64 create_event_ex;
 252 } __packed efi_boot_services_64_t;
 253
 254 /*
 255  * EFI Boot Services table
 256  */
 257 typedef struct {
 258         efi_table_hdr_t hdr;
 259         void *raise_tpl;
 260         void *restore_tpl;
 261         efi_status_t (*allocate_pages)(int, int, unsigned long,
 262                                        efi_physical_addr_t *);
 263         efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
 264         efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
 265                                        unsigned long *, u32 *);
 266         efi_status_t (*allocate_pool)(int, unsigned long, void **);
 267         efi_status_t (*free_pool)(void *);
 268         void *create_event;
 269         void *set_timer;
 270         void *wait_for_event;
 271         void *signal_event;
 272         void *close_event;
 273         void *check_event;
 274         void *install_protocol_interface;
 275         void *reinstall_protocol_interface;
 276         void *uninstall_protocol_interface;
 277         efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
 278         void *__reserved;
 279         void *register_protocol_notify;
 280         void *locate_handle;
 281         void *locate_device_path;
 282         void *install_configuration_table;
 283         void *load_image;
 284         void *start_image;
 285         void *exit;
 286         void *unload_image;
 287         efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
 288         void *get_next_monotonic_count;
 289         void *stall;
 290         void *set_watchdog_timer;
 291         void *connect_controller;
 292         void *disconnect_controller;
 293         void *open_protocol;
 294         void *close_protocol;
 295         void *open_protocol_information;
 296         void *protocols_per_handle;
 297         void *locate_handle_buffer;
 298         void *locate_protocol;
 299         void *install_multiple_protocol_interfaces;
 300         void *uninstall_multiple_protocol_interfaces;
 301         void *calculate_crc32;
 302         void *copy_mem;
 303         void *set_mem;
 304         void *create_event_ex;
 305 } efi_boot_services_t;
 306
 307 typedef enum {
 308         EfiPciIoWidthUint8,
 309         EfiPciIoWidthUint16,
 310         EfiPciIoWidthUint32,
 311         EfiPciIoWidthUint64,
 312         EfiPciIoWidthFifoUint8,
 313         EfiPciIoWidthFifoUint16,
 314         EfiPciIoWidthFifoUint32,
 315         EfiPciIoWidthFifoUint64,
 316         EfiPciIoWidthFillUint8,
 317         EfiPciIoWidthFillUint16,
 318         EfiPciIoWidthFillUint32,
 319         EfiPciIoWidthFillUint64,
 320         EfiPciIoWidthMaximum
 321 } EFI_PCI_IO_PROTOCOL_WIDTH;
 322
 323 typedef enum {
 324         EfiPciIoAttributeOperationGet,
 325         EfiPciIoAttributeOperationSet,
 326         EfiPciIoAttributeOperationEnable,
 327         EfiPciIoAttributeOperationDisable,
 328         EfiPciIoAttributeOperationSupported,
 329     EfiPciIoAttributeOperationMaximum
 330 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
 331
 332 typedef struct {
 333         u32 read;
 334         u32 write;
 335 } efi_pci_io_protocol_access_32_t;
 336
 337 typedef struct {
 338         u64 read;
 339         u64 write;
 340 } efi_pci_io_protocol_access_64_t;
 341
 342 typedef struct {
 343         void *read;
 344         void *write;
 345 } efi_pci_io_protocol_access_t;
 346
 347 typedef struct {
 348         u32 poll_mem;
 349         u32 poll_io;
 350         efi_pci_io_protocol_access_32_t mem;
 351         efi_pci_io_protocol_access_32_t io;
 352         efi_pci_io_protocol_access_32_t pci;
 353         u32 copy_mem;
 354         u32 map;
 355         u32 unmap;
 356         u32 allocate_buffer;
 357         u32 free_buffer;
 358         u32 flush;
 359         u32 get_location;
 360         u32 attributes;
 361         u32 get_bar_attributes;
 362         u32 set_bar_attributes;
 363         uint64_t romsize;
 364         void *romimage;
 365 } efi_pci_io_protocol_32;
 366
 367 typedef struct {
 368         u64 poll_mem;
 369         u64 poll_io;
 370         efi_pci_io_protocol_access_64_t mem;
 371         efi_pci_io_protocol_access_64_t io;
 372         efi_pci_io_protocol_access_64_t pci;
 373         u64 copy_mem;
 374         u64 map;
 375         u64 unmap;
 376         u64 allocate_buffer;
 377         u64 free_buffer;
 378         u64 flush;
 379         u64 get_location;
 380         u64 attributes;
 381         u64 get_bar_attributes;
 382         u64 set_bar_attributes;
 383         uint64_t romsize;
 384         void *romimage;
 385 } efi_pci_io_protocol_64;
 386
 387 typedef struct {
 388         void *poll_mem;
 389         void *poll_io;
 390         efi_pci_io_protocol_access_t mem;
 391         efi_pci_io_protocol_access_t io;
 392         efi_pci_io_protocol_access_t pci;
 393         void *copy_mem;
 394         void *map;
 395         void *unmap;
 396         void *allocate_buffer;
 397         void *free_buffer;
 398         void *flush;
 399         void *get_location;
 400         void *attributes;
 401         void *get_bar_attributes;
 402         void *set_bar_attributes;
 403         uint64_t romsize;
 404         void *romimage;
 405 } efi_pci_io_protocol;
 406
 407 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
 408 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
 409 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
 410 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
 411 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
 412 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
 413 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
 414 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
 415 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
 416 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
 417 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
 418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
 419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
 420 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
 421 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
 422 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
 423 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
 424 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
 425 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
 426
 427 /*
 428  * Types and defines for EFI ResetSystem
 429  */
 430 #define EFI_RESET_COLD 0
 431 #define EFI_RESET_WARM 1
 432 #define EFI_RESET_SHUTDOWN 2
 433
 434 /*
 435  * EFI Runtime Services table
 436  */
 437 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
 438 #define EFI_RUNTIME_SERVICES_REVISION  0x00010000
 439
 440 typedef struct {
 441         efi_table_hdr_t hdr;
 442         u32 get_time;
 443         u32 set_time;
 444         u32 get_wakeup_time;
 445         u32 set_wakeup_time;
 446         u32 set_virtual_address_map;
 447         u32 convert_pointer;
 448         u32 get_variable;
 449         u32 get_next_variable;
 450         u32 set_variable;
 451         u32 get_next_high_mono_count;
 452         u32 reset_system;
 453         u32 update_capsule;
 454         u32 query_capsule_caps;
 455         u32 query_variable_info;
 456 } efi_runtime_services_32_t;
 457
 458 typedef struct {
 459         efi_table_hdr_t hdr;
 460         u64 get_time;
 461         u64 set_time;
 462         u64 get_wakeup_time;
 463         u64 set_wakeup_time;
 464         u64 set_virtual_address_map;
 465         u64 convert_pointer;
 466         u64 get_variable;
 467         u64 get_next_variable;
 468         u64 set_variable;
 469         u64 get_next_high_mono_count;
 470         u64 reset_system;
 471         u64 update_capsule;
 472         u64 query_capsule_caps;
 473         u64 query_variable_info;
 474 } efi_runtime_services_64_t;
 475
 476 typedef struct {
 477         efi_table_hdr_t hdr;
 478         void *get_time;
 479         void *set_time;
 480         void *get_wakeup_time;
 481         void *set_wakeup_time;
 482         void *set_virtual_address_map;
 483         void *convert_pointer;
 484         void *get_variable;
 485         void *get_next_variable;
 486         void *set_variable;
 487         void *get_next_high_mono_count;
 488         void *reset_system;
 489         void *update_capsule;
 490         void *query_capsule_caps;
 491         void *query_variable_info;
 492 } efi_runtime_services_t;
 493
 494 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
 495 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
 496 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
 497                                             efi_time_t *tm);
 498 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
 499 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
 500                                          unsigned long *data_size, void *data);
 501 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
 502                                               efi_guid_t *vendor);
 503 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
 504                                          u32 attr, unsigned long data_size,
 505                                          void *data);
 506 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
 507 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
 508                                  unsigned long data_size, efi_char16_t *data);
 509 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
 510                                                 unsigned long descriptor_size,
 511                                                 u32 descriptor_version,
 512                                                 efi_memory_desc_t *virtual_map);
 513 typedef efi_status_t efi_query_variable_info_t(u32 attr,
 514                                                u64 *storage_space,
 515                                                u64 *remaining_space,
 516                                                u64 *max_variable_size);
 517 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
 518                                           unsigned long count,
 519                                           unsigned long sg_list);
 520 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
 521                                               unsigned long count,
 522                                               u64 *max_size,
 523                                               int *reset_type);
 524 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size);
 525
 526 void efi_native_runtime_setup(void);
 527
 528 /*
 529  *  EFI Configuration Table and GUID definitions
 530  */
 531 #define NULL_GUID \
 532     EFI_GUID(  0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
 533
 534 #define MPS_TABLE_GUID    \
 535     EFI_GUID(  0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 536
 537 #define ACPI_TABLE_GUID    \
 538     EFI_GUID(  0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 539
 540 #define ACPI_20_TABLE_GUID    \
 541     EFI_GUID(  0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
 542
 543 #define SMBIOS_TABLE_GUID    \
 544     EFI_GUID(  0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 545
 546 #define SAL_SYSTEM_TABLE_GUID    \
 547     EFI_GUID(  0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 548
 549 #define HCDP_TABLE_GUID \
 550     EFI_GUID(  0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
 551
 552 #define UGA_IO_PROTOCOL_GUID \
 553     EFI_GUID(  0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
 554
 555 #define EFI_GLOBAL_VARIABLE_GUID \
 556     EFI_GUID(  0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
 557
 558 #define UV_SYSTEM_TABLE_GUID \
 559     EFI_GUID(  0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
 560
 561 #define LINUX_EFI_CRASH_GUID \
 562     EFI_GUID(  0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
 563
 564 #define LOADED_IMAGE_PROTOCOL_GUID \
 565     EFI_GUID(  0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 566
 567 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
 568     EFI_GUID(  0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
 569
 570 #define EFI_UGA_PROTOCOL_GUID \
 571     EFI_GUID(  0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
 572
 573 #define EFI_PCI_IO_PROTOCOL_GUID \
 574     EFI_GUID(  0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
 575
 576 #define EFI_FILE_INFO_ID \
 577     EFI_GUID(  0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 578
 579 #define EFI_FILE_SYSTEM_GUID \
 580     EFI_GUID(  0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 581
 582 #define DEVICE_TREE_GUID \
 583     EFI_GUID(  0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
 584
 585 typedef struct {
 586         efi_guid_t guid;
 587         u64 table;
 588 } efi_config_table_64_t;
 589
 590 typedef struct {
 591         efi_guid_t guid;
 592         u32 table;
 593 } efi_config_table_32_t;
 594
 595 typedef struct {
 596         efi_guid_t guid;
 597         unsigned long table;
 598 } efi_config_table_t;
 599
 600 typedef struct {
 601         efi_guid_t guid;
 602         const char *name;
 603         unsigned long *ptr;
 604 } efi_config_table_type_t;
 605
 606 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
 607
 608 #define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
 609 #define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
 610 #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
 611 #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
 612 #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
 613 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
 614
 615 typedef struct {
 616         efi_table_hdr_t hdr;
 617         u64 fw_vendor;  /* physical addr of CHAR16 vendor string */
 618         u32 fw_revision;
 619         u32 __pad1;
 620         u64 con_in_handle;
 621         u64 con_in;
 622         u64 con_out_handle;
 623         u64 con_out;
 624         u64 stderr_handle;
 625         u64 stderr;
 626         u64 runtime;
 627         u64 boottime;
 628         u32 nr_tables;
 629         u32 __pad2;
 630         u64 tables;
 631 } efi_system_table_64_t;
 632
 633 typedef struct {
 634         efi_table_hdr_t hdr;
 635         u32 fw_vendor;  /* physical addr of CHAR16 vendor string */
 636         u32 fw_revision;
 637         u32 con_in_handle;
 638         u32 con_in;
 639         u32 con_out_handle;
 640         u32 con_out;
 641         u32 stderr_handle;
 642         u32 stderr;
 643         u32 runtime;
 644         u32 boottime;
 645         u32 nr_tables;
 646         u32 tables;
 647 } efi_system_table_32_t;
 648
 649 typedef struct {
 650         efi_table_hdr_t hdr;
 651         unsigned long fw_vendor;        /* physical addr of CHAR16 vendor string */
 652         u32 fw_revision;
 653         unsigned long con_in_handle;
 654         unsigned long con_in;
 655         unsigned long con_out_handle;
 656         unsigned long con_out;
 657         unsigned long stderr_handle;
 658         unsigned long stderr;
 659         efi_runtime_services_t *runtime;
 660         efi_boot_services_t *boottime;
 661         unsigned long nr_tables;
 662         unsigned long tables;
 663 } efi_system_table_t;
 664
 665 struct efi_memory_map {
 666         void *phys_map;
 667         void *map;
 668         void *map_end;
 669         int nr_map;
 670         unsigned long desc_version;
 671         unsigned long desc_size;
 672 };
 673
 674 struct efi_fdt_params {
 675         u64 system_table;
 676         u64 mmap;
 677         u32 mmap_size;
 678         u32 desc_size;
 679         u32 desc_ver;
 680 };
 681
 682 typedef struct {
 683         u32 revision;
 684         u32 parent_handle;
 685         u32 system_table;
 686         u32 device_handle;
 687         u32 file_path;
 688         u32 reserved;
 689         u32 load_options_size;
 690         u32 load_options;
 691         u32 image_base;
 692         __aligned_u64 image_size;
 693         unsigned int image_code_type;
 694         unsigned int image_data_type;
 695         unsigned long unload;
 696 } efi_loaded_image_32_t;
 697
 698 typedef struct {
 699         u32 revision;
 700         u64 parent_handle;
 701         u64 system_table;
 702         u64 device_handle;
 703         u64 file_path;
 704         u64 reserved;
 705         u32 load_options_size;
 706         u64 load_options;
 707         u64 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_64_t;
 713
 714 typedef struct {
 715         u32 revision;
 716         void *parent_handle;
 717         efi_system_table_t *system_table;
 718         void *device_handle;
 719         void *file_path;
 720         void *reserved;
 721         u32 load_options_size;
 722         void *load_options;
 723         void *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_t;
 729
 730
 731 typedef struct {
 732         u64 size;
 733         u64 file_size;
 734         u64 phys_size;
 735         efi_time_t create_time;
 736         efi_time_t last_access_time;
 737         efi_time_t modification_time;
 738         __aligned_u64 attribute;
 739         efi_char16_t filename[1];
 740 } efi_file_info_t;
 741
 742 typedef struct {
 743         u64 revision;
 744         u32 open;
 745         u32 close;
 746         u32 delete;
 747         u32 read;
 748         u32 write;
 749         u32 get_position;
 750         u32 set_position;
 751         u32 get_info;
 752         u32 set_info;
 753         u32 flush;
 754 } efi_file_handle_32_t;
 755
 756 typedef struct {
 757         u64 revision;
 758         u64 open;
 759         u64 close;
 760         u64 delete;
 761         u64 read;
 762         u64 write;
 763         u64 get_position;
 764         u64 set_position;
 765         u64 get_info;
 766         u64 set_info;
 767         u64 flush;
 768 } efi_file_handle_64_t;
 769
 770 typedef struct _efi_file_handle {
 771         u64 revision;
 772         efi_status_t (*open)(struct _efi_file_handle *,
 773                              struct _efi_file_handle **,
 774                              efi_char16_t *, u64, u64);
 775         efi_status_t (*close)(struct _efi_file_handle *);
 776         void *delete;
 777         efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
 778                              void *);
 779         void *write;
 780         void *get_position;
 781         void *set_position;
 782         efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
 783                         unsigned long *, void *);
 784         void *set_info;
 785         void *flush;
 786 } efi_file_handle_t;
 787
 788 typedef struct _efi_file_io_interface {
 789         u64 revision;
 790         int (*open_volume)(struct _efi_file_io_interface *,
 791                            efi_file_handle_t **);
 792 } efi_file_io_interface_t;
 793
 794 #define EFI_FILE_MODE_READ      0x0000000000000001
 795 #define EFI_FILE_MODE_WRITE     0x0000000000000002
 796 #define EFI_FILE_MODE_CREATE    0x8000000000000000
 797
 798 #define EFI_INVALID_TABLE_ADDR          (~0UL)
 799
 800 /*
 801  * All runtime access to EFI goes through this structure:
 802  */
 803 extern struct efi {
 804         efi_system_table_t *systab;     /* EFI system table */
 805         unsigned int runtime_version;   /* Runtime services version */
 806         unsigned long mps;              /* MPS table */
 807         unsigned long acpi;             /* ACPI table  (IA64 ext 0.71) */
 808         unsigned long acpi20;           /* ACPI table  (ACPI 2.0) */
 809         unsigned long smbios;           /* SM BIOS table */
 810         unsigned long sal_systab;       /* SAL system table */
 811         unsigned long boot_info;        /* boot info table */
 812         unsigned long hcdp;             /* HCDP table */
 813         unsigned long uga;              /* UGA table */
 814         unsigned long uv_systab;        /* UV system table */
 815         unsigned long fw_vendor;        /* fw_vendor */
 816         unsigned long runtime;          /* runtime table */
 817         unsigned long config_table;     /* config tables */
 818         efi_get_time_t *get_time;
 819         efi_set_time_t *set_time;
 820         efi_get_wakeup_time_t *get_wakeup_time;
 821         efi_set_wakeup_time_t *set_wakeup_time;
 822         efi_get_variable_t *get_variable;
 823         efi_get_next_variable_t *get_next_variable;
 824         efi_set_variable_t *set_variable;
 825         efi_query_variable_info_t *query_variable_info;
 826         efi_update_capsule_t *update_capsule;
 827         efi_query_capsule_caps_t *query_capsule_caps;
 828         efi_get_next_high_mono_count_t *get_next_high_mono_count;
 829         efi_reset_system_t *reset_system;
 830         efi_set_virtual_address_map_t *set_virtual_address_map;
 831         struct efi_memory_map *memmap;
 832         unsigned long flags;
 833 } efi;
 834
 835 static inline int
 836 efi_guidcmp (efi_guid_t left, efi_guid_t right)
 837 {
 838         return memcmp(&left, &right, sizeof (efi_guid_t));
 839 }
 840
 841 static inline char *
 842 efi_guid_unparse(efi_guid_t *guid, char *out)
 843 {
 844         sprintf(out, "%pUl", guid->b);
 845         return out;
 846 }
 847
 848 extern void efi_init (void);
 849 extern void *efi_get_pal_addr (void);
 850 extern void efi_map_pal_code (void);
 851 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
 852 extern void efi_gettimeofday (struct timespec *ts);
 853 extern void efi_enter_virtual_mode (void);      /* switch EFI to virtual mode, if possible */
 854 #ifdef CONFIG_X86
 855 extern void efi_late_init(void);
 856 extern void efi_free_boot_services(void);
 857 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
 858 #else
 859 static inline void efi_late_init(void) {}
 860 static inline void efi_free_boot_services(void) {}
 861
 862 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
 863 {
 864         return EFI_SUCCESS;
 865 }
 866 #endif
 867 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
 868 extern int efi_config_init(efi_config_table_type_t *arch_tables);
 869 extern u64 efi_get_iobase (void);
 870 extern u32 efi_mem_type (unsigned long phys_addr);
 871 extern u64 efi_mem_attributes (unsigned long phys_addr);
 872 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
 873 extern int __init efi_uart_console_only (void);
 874 extern void efi_initialize_iomem_resources(struct resource *code_resource,
 875                 struct resource *data_resource, struct resource *bss_resource);
 876 extern void efi_get_time(struct timespec *now);
 877 extern void efi_reserve_boot_services(void);
 878 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
 879 extern struct efi_memory_map memmap;
 880
 881 extern int efi_reboot_quirk_mode;
 882 extern bool efi_poweroff_required(void);
 883
 884 /* Iterate through an efi_memory_map */
 885 #define for_each_efi_memory_desc(m, md)                                    \
 886         for ((md) = (m)->map;                                              \
 887              (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
 888              (md) = (void *)(md) + (m)->desc_size)
 889
 890 /**
 891  * efi_range_is_wc - check the WC bit on an address range
 892  * @start: starting kvirt address
 893  * @len: length of range
 894  *
 895  * Consult the EFI memory map and make sure it's ok to set this range WC.
 896  * Returns true or false.
 897  */
 898 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
 899 {
 900         unsigned long i;
 901
 902         for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
 903                 unsigned long paddr = __pa(start + i);
 904                 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
 905                         return 0;
 906         }
 907         /* The range checked out */
 908         return 1;
 909 }
 910
 911 #ifdef CONFIG_EFI_PCDP
 912 extern int __init efi_setup_pcdp_console(char *);
 913 #endif
 914
 915 /*
 916  * We play games with efi_enabled so that the compiler will, if
 917  * possible, remove EFI-related code altogether.
 918  */
 919 #define EFI_BOOT                0       /* Were we booted from EFI? */
 920 #define EFI_SYSTEM_TABLES       1       /* Can we use EFI system tables? */
 921 #define EFI_CONFIG_TABLES       2       /* Can we use EFI config tables? */
 922 #define EFI_RUNTIME_SERVICES    3       /* Can we use runtime services? */
 923 #define EFI_MEMMAP              4       /* Can we use EFI memory map? */
 924 #define EFI_64BIT               5       /* Is the firmware 64-bit? */
 925 #define EFI_PARAVIRT            6       /* Access is via a paravirt interface */
 926 #define EFI_ARCH_1              7       /* First arch-specific bit */
 927
 928 #ifdef CONFIG_EFI
 929 /*
 930  * Test whether the above EFI_* bits are enabled.
 931  */
 932 static inline bool efi_enabled(int feature)
 933 {
 934         return test_bit(feature, &efi.flags) != 0;
 935 }
 936 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
 937 #else
 938 static inline bool efi_enabled(int feature)
 939 {
 940         return false;
 941 }
 942 static inline void
 943 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
 944 #endif
 945
 946 /*
 947  * Variable Attributes
 948  */
 949 #define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
 950 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
 951 #define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004
 952 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
 953 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
 954 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
 955 #define EFI_VARIABLE_APPEND_WRITE       0x0000000000000040
 956
 957 #define EFI_VARIABLE_MASK       (EFI_VARIABLE_NON_VOLATILE | \
 958                                 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 959                                 EFI_VARIABLE_RUNTIME_ACCESS | \
 960                                 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
 961                                 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
 962                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
 963                                 EFI_VARIABLE_APPEND_WRITE)
 964 /*
 965  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
 966  * not including trailing NUL
 967  */
 968 #define EFI_VARIABLE_GUID_LEN 36
 969
 970 /*
 971  * The type of search to perform when calling boottime->locate_handle
 972  */
 973 #define EFI_LOCATE_ALL_HANDLES                  0
 974 #define EFI_LOCATE_BY_REGISTER_NOTIFY           1
 975 #define EFI_LOCATE_BY_PROTOCOL                  2
 976
 977 /*
 978  * EFI Device Path information
 979  */
 980 #define EFI_DEV_HW                      0x01
 981 #define  EFI_DEV_PCI                             1
 982 #define  EFI_DEV_PCCARD                          2
 983 #define  EFI_DEV_MEM_MAPPED                      3
 984 #define  EFI_DEV_VENDOR                          4
 985 #define  EFI_DEV_CONTROLLER                      5
 986 #define EFI_DEV_ACPI                    0x02
 987 #define   EFI_DEV_BASIC_ACPI                     1
 988 #define   EFI_DEV_EXPANDED_ACPI                  2
 989 #define EFI_DEV_MSG                     0x03
 990 #define   EFI_DEV_MSG_ATAPI                      1
 991 #define   EFI_DEV_MSG_SCSI                       2
 992 #define   EFI_DEV_MSG_FC                         3
 993 #define   EFI_DEV_MSG_1394                       4
 994 #define   EFI_DEV_MSG_USB                        5
 995 #define   EFI_DEV_MSG_USB_CLASS                 15
 996 #define   EFI_DEV_MSG_I20                        6
 997 #define   EFI_DEV_MSG_MAC                       11
 998 #define   EFI_DEV_MSG_IPV4                      12
 999 #define   EFI_DEV_MSG_IPV6                      13
1000 #define   EFI_DEV_MSG_INFINIBAND                 9
1001 #define   EFI_DEV_MSG_UART                      14
1002 #define   EFI_DEV_MSG_VENDOR                    10
1003 #define EFI_DEV_MEDIA                   0x04
1004 #define   EFI_DEV_MEDIA_HARD_DRIVE               1
1005 #define   EFI_DEV_MEDIA_CDROM                    2
1006 #define   EFI_DEV_MEDIA_VENDOR                   3
1007 #define   EFI_DEV_MEDIA_FILE                     4
1008 #define   EFI_DEV_MEDIA_PROTOCOL                 5
1009 #define EFI_DEV_BIOS_BOOT               0x05
1010 #define EFI_DEV_END_PATH                0x7F
1011 #define EFI_DEV_END_PATH2               0xFF
1012 #define   EFI_DEV_END_INSTANCE                  0x01
1013 #define   EFI_DEV_END_ENTIRE                    0xFF
1014
1015 struct efi_generic_dev_path {
1016         u8 type;
1017         u8 sub_type;
1018         u16 length;
1019 } __attribute ((packed));
1020
1021 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1022 {
1023         *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1024         *addr &= PAGE_MASK;
1025 }
1026
1027 /*
1028  * EFI Variable support.
1029  *
1030  * Different firmware drivers can expose their EFI-like variables using
1031  * the following.
1032  */
1033
1034 struct efivar_operations {
1035         efi_get_variable_t *get_variable;
1036         efi_get_next_variable_t *get_next_variable;
1037         efi_set_variable_t *set_variable;
1038         efi_query_variable_store_t *query_variable_store;
1039 };
1040
1041 struct efivars {
1042         /*
1043          * ->lock protects two things:
1044          * 1) efivarfs_list and efivars_sysfs_list
1045          * 2) ->ops calls
1046          */
1047         spinlock_t lock;
1048         struct kset *kset;
1049         struct kobject *kobject;
1050         const struct efivar_operations *ops;
1051 };
1052
1053 /*
1054  * The maximum size of VariableName + Data = 1024
1055  * Therefore, it's reasonable to save that much
1056  * space in each part of the structure,
1057  * and we use a page for reading/writing.
1058  */
1059
1060 #define EFI_VAR_NAME_LEN        1024
1061
1062 struct efi_variable {
1063         efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1064         efi_guid_t    VendorGuid;
1065         unsigned long DataSize;
1066         __u8          Data[1024];
1067         efi_status_t  Status;
1068         __u32         Attributes;
1069 } __attribute__((packed));
1070
1071 struct efivar_entry {
1072         struct efi_variable var;
1073         struct list_head list;
1074         struct kobject kobj;
1075         bool scanning;
1076         bool deleting;
1077 };
1078
1079 struct efi_simple_text_output_protocol_32 {
1080         u32 reset;
1081         u32 output_string;
1082         u32 test_string;
1083 };
1084
1085 struct efi_simple_text_output_protocol_64 {
1086         u64 reset;
1087         u64 output_string;
1088         u64 test_string;
1089 };
1090
1091 struct efi_simple_text_output_protocol {
1092         void *reset;
1093         efi_status_t (*output_string)(void *, void *);
1094         void *test_string;
1095 };
1096
1097 extern struct list_head efivar_sysfs_list;
1098
1099 static inline void
1100 efivar_unregister(struct efivar_entry *var)
1101 {
1102         kobject_put(&var->kobj);
1103 }
1104
1105 int efivars_register(struct efivars *efivars,
1106                      const struct efivar_operations *ops,
1107                      struct kobject *kobject);
1108 int efivars_unregister(struct efivars *efivars);
1109 struct kobject *efivars_kobject(void);
1110
1111 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1112                 void *data, bool atomic, bool duplicates,
1113                 struct list_head *head);
1114
1115 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1116 void efivar_entry_remove(struct efivar_entry *entry);
1117
1118 int __efivar_entry_delete(struct efivar_entry *entry);
1119 int efivar_entry_delete(struct efivar_entry *entry);
1120
1121 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1122 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1123                        unsigned long *size, void *data);
1124 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1125                      unsigned long *size, void *data);
1126 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1127                      unsigned long size, void *data, struct list_head *head);
1128 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1129                               unsigned long *size, void *data, bool *set);
1130 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1131                           bool block, unsigned long size, void *data);
1132
1133 void efivar_entry_iter_begin(void);
1134 void efivar_entry_iter_end(void);
1135
1136 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1137                         struct list_head *head, void *data,
1138                         struct efivar_entry **prev);
1139 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1140                       struct list_head *head, void *data);
1141
1142 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1143                                        struct list_head *head, bool remove);
1144
1145 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len);
1146
1147 extern struct work_struct efivar_work;
1148 void efivar_run_worker(void);
1149
1150 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1151 int efivars_sysfs_init(void);
1152
1153 #define EFIVARS_DATA_SIZE_MAX 1024
1154
1155 #endif /* CONFIG_EFI_VARS */
1156
1157 #ifdef CONFIG_EFI_RUNTIME_MAP
1158 int efi_runtime_map_init(struct kobject *);
1159 void efi_runtime_map_setup(void *, int, u32);
1160 int efi_get_runtime_map_size(void);
1161 int efi_get_runtime_map_desc_size(void);
1162 int efi_runtime_map_copy(void *buf, size_t bufsz);
1163 #else
1164 static inline int efi_runtime_map_init(struct kobject *kobj)
1165 {
1166         return 0;
1167 }
1168
1169 static inline void
1170 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
1171
1172 static inline int efi_get_runtime_map_size(void)
1173 {
1174         return 0;
1175 }
1176
1177 static inline int efi_get_runtime_map_desc_size(void)
1178 {
1179         return 0;
1180 }
1181
1182 static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1183 {
1184         return 0;
1185 }
1186
1187 #endif
1188
1189 /* prototypes shared between arch specific and generic stub code */
1190
1191 #define pr_efi(sys_table, msg)     efi_printk(sys_table, "EFI stub: "msg)
1192 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1193
1194 void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1195
1196 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1197               unsigned long addr);
1198
1199 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1200                           efi_loaded_image_t *image, int *cmd_line_len);
1201
1202 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1203                                 efi_memory_desc_t **map,
1204                                 unsigned long *map_size,
1205                                 unsigned long *desc_size,
1206                                 u32 *desc_ver,
1207                                 unsigned long *key_ptr);
1208
1209 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1210                            unsigned long size, unsigned long align,
1211                            unsigned long *addr);
1212
1213 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1214                             unsigned long size, unsigned long align,
1215                             unsigned long *addr, unsigned long max);
1216
1217 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1218                                  unsigned long *image_addr,
1219                                  unsigned long image_size,
1220                                  unsigned long alloc_size,
1221                                  unsigned long preferred_addr,
1222                                  unsigned long alignment);
1223
1224 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1225                                   efi_loaded_image_t *image,
1226                                   char *cmd_line, char *option_string,
1227                                   unsigned long max_addr,
1228                                   unsigned long *load_addr,
1229                                   unsigned long *load_size);
1230
1231 efi_status_t efi_parse_options(char *cmdline);
1232
1233 bool efi_runtime_disabled(void);
1234 #endif /* _LINUX_EFI_H */