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 /*
 121  * Allocation types for calls to boottime->allocate_pages.
 122  */
 123 #define EFI_ALLOCATE_ANY_PAGES          0
 124 #define EFI_ALLOCATE_MAX_ADDRESS        1
 125 #define EFI_ALLOCATE_ADDRESS            2
 126 #define EFI_MAX_ALLOCATE_TYPE           3
 127
 128 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg);
 129
 130 /*
 131  * Types and defines for Time Services
 132  */
 133 #define EFI_TIME_ADJUST_DAYLIGHT 0x1
 134 #define EFI_TIME_IN_DAYLIGHT     0x2
 135 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff
 136
 137 typedef struct {
 138         u16 year;
 139         u8 month;
 140         u8 day;
 141         u8 hour;
 142         u8 minute;
 143         u8 second;
 144         u8 pad1;
 145         u32 nanosecond;
 146         s16 timezone;
 147         u8 daylight;
 148         u8 pad2;
 149 } efi_time_t;
 150
 151 typedef struct {
 152         u32 resolution;
 153         u32 accuracy;
 154         u8 sets_to_zero;
 155 } efi_time_cap_t;
 156
 157 typedef struct {
 158         efi_table_hdr_t hdr;
 159         u32 raise_tpl;
 160         u32 restore_tpl;
 161         u32 allocate_pages;
 162         u32 free_pages;
 163         u32 get_memory_map;
 164         u32 allocate_pool;
 165         u32 free_pool;
 166         u32 create_event;
 167         u32 set_timer;
 168         u32 wait_for_event;
 169         u32 signal_event;
 170         u32 close_event;
 171         u32 check_event;
 172         u32 install_protocol_interface;
 173         u32 reinstall_protocol_interface;
 174         u32 uninstall_protocol_interface;
 175         u32 handle_protocol;
 176         u32 __reserved;
 177         u32 register_protocol_notify;
 178         u32 locate_handle;
 179         u32 locate_device_path;
 180         u32 install_configuration_table;
 181         u32 load_image;
 182         u32 start_image;
 183         u32 exit;
 184         u32 unload_image;
 185         u32 exit_boot_services;
 186         u32 get_next_monotonic_count;
 187         u32 stall;
 188         u32 set_watchdog_timer;
 189         u32 connect_controller;
 190         u32 disconnect_controller;
 191         u32 open_protocol;
 192         u32 close_protocol;
 193         u32 open_protocol_information;
 194         u32 protocols_per_handle;
 195         u32 locate_handle_buffer;
 196         u32 locate_protocol;
 197         u32 install_multiple_protocol_interfaces;
 198         u32 uninstall_multiple_protocol_interfaces;
 199         u32 calculate_crc32;
 200         u32 copy_mem;
 201         u32 set_mem;
 202         u32 create_event_ex;
 203 } __packed efi_boot_services_32_t;
 204
 205 typedef struct {
 206         efi_table_hdr_t hdr;
 207         u64 raise_tpl;
 208         u64 restore_tpl;
 209         u64 allocate_pages;
 210         u64 free_pages;
 211         u64 get_memory_map;
 212         u64 allocate_pool;
 213         u64 free_pool;
 214         u64 create_event;
 215         u64 set_timer;
 216         u64 wait_for_event;
 217         u64 signal_event;
 218         u64 close_event;
 219         u64 check_event;
 220         u64 install_protocol_interface;
 221         u64 reinstall_protocol_interface;
 222         u64 uninstall_protocol_interface;
 223         u64 handle_protocol;
 224         u64 __reserved;
 225         u64 register_protocol_notify;
 226         u64 locate_handle;
 227         u64 locate_device_path;
 228         u64 install_configuration_table;
 229         u64 load_image;
 230         u64 start_image;
 231         u64 exit;
 232         u64 unload_image;
 233         u64 exit_boot_services;
 234         u64 get_next_monotonic_count;
 235         u64 stall;
 236         u64 set_watchdog_timer;
 237         u64 connect_controller;
 238         u64 disconnect_controller;
 239         u64 open_protocol;
 240         u64 close_protocol;
 241         u64 open_protocol_information;
 242         u64 protocols_per_handle;
 243         u64 locate_handle_buffer;
 244         u64 locate_protocol;
 245         u64 install_multiple_protocol_interfaces;
 246         u64 uninstall_multiple_protocol_interfaces;
 247         u64 calculate_crc32;
 248         u64 copy_mem;
 249         u64 set_mem;
 250         u64 create_event_ex;
 251 } __packed efi_boot_services_64_t;
 252
 253 /*
 254  * EFI Boot Services table
 255  */
 256 typedef struct {
 257         efi_table_hdr_t hdr;
 258         void *raise_tpl;
 259         void *restore_tpl;
 260         efi_status_t (*allocate_pages)(int, int, unsigned long,
 261                                        efi_physical_addr_t *);
 262         efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long);
 263         efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *,
 264                                        unsigned long *, u32 *);
 265         efi_status_t (*allocate_pool)(int, unsigned long, void **);
 266         efi_status_t (*free_pool)(void *);
 267         void *create_event;
 268         void *set_timer;
 269         void *wait_for_event;
 270         void *signal_event;
 271         void *close_event;
 272         void *check_event;
 273         void *install_protocol_interface;
 274         void *reinstall_protocol_interface;
 275         void *uninstall_protocol_interface;
 276         efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
 277         void *__reserved;
 278         void *register_protocol_notify;
 279         void *locate_handle;
 280         void *locate_device_path;
 281         void *install_configuration_table;
 282         void *load_image;
 283         void *start_image;
 284         void *exit;
 285         void *unload_image;
 286         efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long);
 287         void *get_next_monotonic_count;
 288         void *stall;
 289         void *set_watchdog_timer;
 290         void *connect_controller;
 291         void *disconnect_controller;
 292         void *open_protocol;
 293         void *close_protocol;
 294         void *open_protocol_information;
 295         void *protocols_per_handle;
 296         void *locate_handle_buffer;
 297         void *locate_protocol;
 298         void *install_multiple_protocol_interfaces;
 299         void *uninstall_multiple_protocol_interfaces;
 300         void *calculate_crc32;
 301         void *copy_mem;
 302         void *set_mem;
 303         void *create_event_ex;
 304 } efi_boot_services_t;
 305
 306 typedef enum {
 307         EfiPciIoWidthUint8,
 308         EfiPciIoWidthUint16,
 309         EfiPciIoWidthUint32,
 310         EfiPciIoWidthUint64,
 311         EfiPciIoWidthFifoUint8,
 312         EfiPciIoWidthFifoUint16,
 313         EfiPciIoWidthFifoUint32,
 314         EfiPciIoWidthFifoUint64,
 315         EfiPciIoWidthFillUint8,
 316         EfiPciIoWidthFillUint16,
 317         EfiPciIoWidthFillUint32,
 318         EfiPciIoWidthFillUint64,
 319         EfiPciIoWidthMaximum
 320 } EFI_PCI_IO_PROTOCOL_WIDTH;
 321
 322 typedef enum {
 323         EfiPciIoAttributeOperationGet,
 324         EfiPciIoAttributeOperationSet,
 325         EfiPciIoAttributeOperationEnable,
 326         EfiPciIoAttributeOperationDisable,
 327         EfiPciIoAttributeOperationSupported,
 328     EfiPciIoAttributeOperationMaximum
 329 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION;
 330
 331 typedef struct {
 332         u32 read;
 333         u32 write;
 334 } efi_pci_io_protocol_access_32_t;
 335
 336 typedef struct {
 337         u64 read;
 338         u64 write;
 339 } efi_pci_io_protocol_access_64_t;
 340
 341 typedef struct {
 342         void *read;
 343         void *write;
 344 } efi_pci_io_protocol_access_t;
 345
 346 typedef struct {
 347         u32 poll_mem;
 348         u32 poll_io;
 349         efi_pci_io_protocol_access_32_t mem;
 350         efi_pci_io_protocol_access_32_t io;
 351         efi_pci_io_protocol_access_32_t pci;
 352         u32 copy_mem;
 353         u32 map;
 354         u32 unmap;
 355         u32 allocate_buffer;
 356         u32 free_buffer;
 357         u32 flush;
 358         u32 get_location;
 359         u32 attributes;
 360         u32 get_bar_attributes;
 361         u32 set_bar_attributes;
 362         uint64_t romsize;
 363         void *romimage;
 364 } efi_pci_io_protocol_32;
 365
 366 typedef struct {
 367         u64 poll_mem;
 368         u64 poll_io;
 369         efi_pci_io_protocol_access_64_t mem;
 370         efi_pci_io_protocol_access_64_t io;
 371         efi_pci_io_protocol_access_64_t pci;
 372         u64 copy_mem;
 373         u64 map;
 374         u64 unmap;
 375         u64 allocate_buffer;
 376         u64 free_buffer;
 377         u64 flush;
 378         u64 get_location;
 379         u64 attributes;
 380         u64 get_bar_attributes;
 381         u64 set_bar_attributes;
 382         uint64_t romsize;
 383         void *romimage;
 384 } efi_pci_io_protocol_64;
 385
 386 typedef struct {
 387         void *poll_mem;
 388         void *poll_io;
 389         efi_pci_io_protocol_access_t mem;
 390         efi_pci_io_protocol_access_t io;
 391         efi_pci_io_protocol_access_t pci;
 392         void *copy_mem;
 393         void *map;
 394         void *unmap;
 395         void *allocate_buffer;
 396         void *free_buffer;
 397         void *flush;
 398         void *get_location;
 399         void *attributes;
 400         void *get_bar_attributes;
 401         void *set_bar_attributes;
 402         uint64_t romsize;
 403         void *romimage;
 404 } efi_pci_io_protocol;
 405
 406 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001
 407 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002
 408 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004
 409 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008
 410 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010
 411 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020
 412 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040
 413 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080
 414 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100
 415 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200
 416 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400
 417 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800
 418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000
 419 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000
 420 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000
 421 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000
 422 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000
 423 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000
 424 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000
 425
 426 /*
 427  * Types and defines for EFI ResetSystem
 428  */
 429 #define EFI_RESET_COLD 0
 430 #define EFI_RESET_WARM 1
 431 #define EFI_RESET_SHUTDOWN 2
 432
 433 /*
 434  * EFI Runtime Services table
 435  */
 436 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL)
 437 #define EFI_RUNTIME_SERVICES_REVISION  0x00010000
 438
 439 typedef struct {
 440         efi_table_hdr_t hdr;
 441         u32 get_time;
 442         u32 set_time;
 443         u32 get_wakeup_time;
 444         u32 set_wakeup_time;
 445         u32 set_virtual_address_map;
 446         u32 convert_pointer;
 447         u32 get_variable;
 448         u32 get_next_variable;
 449         u32 set_variable;
 450         u32 get_next_high_mono_count;
 451         u32 reset_system;
 452         u32 update_capsule;
 453         u32 query_capsule_caps;
 454         u32 query_variable_info;
 455 } efi_runtime_services_32_t;
 456
 457 typedef struct {
 458         efi_table_hdr_t hdr;
 459         u64 get_time;
 460         u64 set_time;
 461         u64 get_wakeup_time;
 462         u64 set_wakeup_time;
 463         u64 set_virtual_address_map;
 464         u64 convert_pointer;
 465         u64 get_variable;
 466         u64 get_next_variable;
 467         u64 set_variable;
 468         u64 get_next_high_mono_count;
 469         u64 reset_system;
 470         u64 update_capsule;
 471         u64 query_capsule_caps;
 472         u64 query_variable_info;
 473 } efi_runtime_services_64_t;
 474
 475 typedef struct {
 476         efi_table_hdr_t hdr;
 477         void *get_time;
 478         void *set_time;
 479         void *get_wakeup_time;
 480         void *set_wakeup_time;
 481         void *set_virtual_address_map;
 482         void *convert_pointer;
 483         void *get_variable;
 484         void *get_next_variable;
 485         void *set_variable;
 486         void *get_next_high_mono_count;
 487         void *reset_system;
 488         void *update_capsule;
 489         void *query_capsule_caps;
 490         void *query_variable_info;
 491 } efi_runtime_services_t;
 492
 493 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc);
 494 typedef efi_status_t efi_set_time_t (efi_time_t *tm);
 495 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending,
 496                                             efi_time_t *tm);
 497 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm);
 498 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr,
 499                                          unsigned long *data_size, void *data);
 500 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name,
 501                                               efi_guid_t *vendor);
 502 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor,
 503                                          u32 attr, unsigned long data_size,
 504                                          void *data);
 505 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count);
 506 typedef void efi_reset_system_t (int reset_type, efi_status_t status,
 507                                  unsigned long data_size, efi_char16_t *data);
 508 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size,
 509                                                 unsigned long descriptor_size,
 510                                                 u32 descriptor_version,
 511                                                 efi_memory_desc_t *virtual_map);
 512 typedef efi_status_t efi_query_variable_info_t(u32 attr,
 513                                                u64 *storage_space,
 514                                                u64 *remaining_space,
 515                                                u64 *max_variable_size);
 516 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules,
 517                                           unsigned long count,
 518                                           unsigned long sg_list);
 519 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules,
 520                                               unsigned long count,
 521                                               u64 *max_size,
 522                                               int *reset_type);
 523 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size);
 524
 525 void efi_native_runtime_setup(void);
 526
 527 /*
 528  *  EFI Configuration Table and GUID definitions
 529  */
 530 #define NULL_GUID \
 531     EFI_GUID(  0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 )
 532
 533 #define MPS_TABLE_GUID    \
 534     EFI_GUID(  0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 535
 536 #define ACPI_TABLE_GUID    \
 537     EFI_GUID(  0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 538
 539 #define ACPI_20_TABLE_GUID    \
 540     EFI_GUID(  0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 )
 541
 542 #define SMBIOS_TABLE_GUID    \
 543     EFI_GUID(  0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 544
 545 #define SAL_SYSTEM_TABLE_GUID    \
 546     EFI_GUID(  0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d )
 547
 548 #define HCDP_TABLE_GUID \
 549     EFI_GUID(  0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 )
 550
 551 #define UGA_IO_PROTOCOL_GUID \
 552     EFI_GUID(  0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 )
 553
 554 #define EFI_GLOBAL_VARIABLE_GUID \
 555     EFI_GUID(  0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c )
 556
 557 #define UV_SYSTEM_TABLE_GUID \
 558     EFI_GUID(  0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 )
 559
 560 #define LINUX_EFI_CRASH_GUID \
 561     EFI_GUID(  0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 )
 562
 563 #define LOADED_IMAGE_PROTOCOL_GUID \
 564     EFI_GUID(  0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 565
 566 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \
 567     EFI_GUID(  0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a )
 568
 569 #define EFI_UGA_PROTOCOL_GUID \
 570     EFI_GUID(  0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 )
 571
 572 #define EFI_PCI_IO_PROTOCOL_GUID \
 573     EFI_GUID(  0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a )
 574
 575 #define EFI_FILE_INFO_ID \
 576     EFI_GUID(  0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 577
 578 #define EFI_FILE_SYSTEM_GUID \
 579     EFI_GUID(  0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b )
 580
 581 #define DEVICE_TREE_GUID \
 582     EFI_GUID(  0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 )
 583
 584 typedef struct {
 585         efi_guid_t guid;
 586         u64 table;
 587 } efi_config_table_64_t;
 588
 589 typedef struct {
 590         efi_guid_t guid;
 591         u32 table;
 592 } efi_config_table_32_t;
 593
 594 typedef struct {
 595         efi_guid_t guid;
 596         unsigned long table;
 597 } efi_config_table_t;
 598
 599 typedef struct {
 600         efi_guid_t guid;
 601         const char *name;
 602         unsigned long *ptr;
 603 } efi_config_table_type_t;
 604
 605 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL)
 606
 607 #define EFI_2_30_SYSTEM_TABLE_REVISION  ((2 << 16) | (30))
 608 #define EFI_2_20_SYSTEM_TABLE_REVISION  ((2 << 16) | (20))
 609 #define EFI_2_10_SYSTEM_TABLE_REVISION  ((2 << 16) | (10))
 610 #define EFI_2_00_SYSTEM_TABLE_REVISION  ((2 << 16) | (00))
 611 #define EFI_1_10_SYSTEM_TABLE_REVISION  ((1 << 16) | (10))
 612 #define EFI_1_02_SYSTEM_TABLE_REVISION  ((1 << 16) | (02))
 613
 614 typedef struct {
 615         efi_table_hdr_t hdr;
 616         u64 fw_vendor;  /* physical addr of CHAR16 vendor string */
 617         u32 fw_revision;
 618         u32 __pad1;
 619         u64 con_in_handle;
 620         u64 con_in;
 621         u64 con_out_handle;
 622         u64 con_out;
 623         u64 stderr_handle;
 624         u64 stderr;
 625         u64 runtime;
 626         u64 boottime;
 627         u32 nr_tables;
 628         u32 __pad2;
 629         u64 tables;
 630 } efi_system_table_64_t;
 631
 632 typedef struct {
 633         efi_table_hdr_t hdr;
 634         u32 fw_vendor;  /* physical addr of CHAR16 vendor string */
 635         u32 fw_revision;
 636         u32 con_in_handle;
 637         u32 con_in;
 638         u32 con_out_handle;
 639         u32 con_out;
 640         u32 stderr_handle;
 641         u32 stderr;
 642         u32 runtime;
 643         u32 boottime;
 644         u32 nr_tables;
 645         u32 tables;
 646 } efi_system_table_32_t;
 647
 648 typedef struct {
 649         efi_table_hdr_t hdr;
 650         unsigned long fw_vendor;        /* physical addr of CHAR16 vendor string */
 651         u32 fw_revision;
 652         unsigned long con_in_handle;
 653         unsigned long con_in;
 654         unsigned long con_out_handle;
 655         unsigned long con_out;
 656         unsigned long stderr_handle;
 657         unsigned long stderr;
 658         efi_runtime_services_t *runtime;
 659         efi_boot_services_t *boottime;
 660         unsigned long nr_tables;
 661         unsigned long tables;
 662 } efi_system_table_t;
 663
 664 struct efi_memory_map {
 665         void *phys_map;
 666         void *map;
 667         void *map_end;
 668         int nr_map;
 669         unsigned long desc_version;
 670         unsigned long desc_size;
 671 };
 672
 673 struct efi_fdt_params {
 674         u64 system_table;
 675         u64 mmap;
 676         u32 mmap_size;
 677         u32 desc_size;
 678         u32 desc_ver;
 679 };
 680
 681 typedef struct {
 682         u32 revision;
 683         u32 parent_handle;
 684         u32 system_table;
 685         u32 device_handle;
 686         u32 file_path;
 687         u32 reserved;
 688         u32 load_options_size;
 689         u32 load_options;
 690         u32 image_base;
 691         __aligned_u64 image_size;
 692         unsigned int image_code_type;
 693         unsigned int image_data_type;
 694         unsigned long unload;
 695 } efi_loaded_image_32_t;
 696
 697 typedef struct {
 698         u32 revision;
 699         u64 parent_handle;
 700         u64 system_table;
 701         u64 device_handle;
 702         u64 file_path;
 703         u64 reserved;
 704         u32 load_options_size;
 705         u64 load_options;
 706         u64 image_base;
 707         __aligned_u64 image_size;
 708         unsigned int image_code_type;
 709         unsigned int image_data_type;
 710         unsigned long unload;
 711 } efi_loaded_image_64_t;
 712
 713 typedef struct {
 714         u32 revision;
 715         void *parent_handle;
 716         efi_system_table_t *system_table;
 717         void *device_handle;
 718         void *file_path;
 719         void *reserved;
 720         u32 load_options_size;
 721         void *load_options;
 722         void *image_base;
 723         __aligned_u64 image_size;
 724         unsigned int image_code_type;
 725         unsigned int image_data_type;
 726         unsigned long unload;
 727 } efi_loaded_image_t;
 728
 729
 730 typedef struct {
 731         u64 size;
 732         u64 file_size;
 733         u64 phys_size;
 734         efi_time_t create_time;
 735         efi_time_t last_access_time;
 736         efi_time_t modification_time;
 737         __aligned_u64 attribute;
 738         efi_char16_t filename[1];
 739 } efi_file_info_t;
 740
 741 typedef struct {
 742         u64 revision;
 743         u32 open;
 744         u32 close;
 745         u32 delete;
 746         u32 read;
 747         u32 write;
 748         u32 get_position;
 749         u32 set_position;
 750         u32 get_info;
 751         u32 set_info;
 752         u32 flush;
 753 } efi_file_handle_32_t;
 754
 755 typedef struct {
 756         u64 revision;
 757         u64 open;
 758         u64 close;
 759         u64 delete;
 760         u64 read;
 761         u64 write;
 762         u64 get_position;
 763         u64 set_position;
 764         u64 get_info;
 765         u64 set_info;
 766         u64 flush;
 767 } efi_file_handle_64_t;
 768
 769 typedef struct _efi_file_handle {
 770         u64 revision;
 771         efi_status_t (*open)(struct _efi_file_handle *,
 772                              struct _efi_file_handle **,
 773                              efi_char16_t *, u64, u64);
 774         efi_status_t (*close)(struct _efi_file_handle *);
 775         void *delete;
 776         efi_status_t (*read)(struct _efi_file_handle *, unsigned long *,
 777                              void *);
 778         void *write;
 779         void *get_position;
 780         void *set_position;
 781         efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *,
 782                         unsigned long *, void *);
 783         void *set_info;
 784         void *flush;
 785 } efi_file_handle_t;
 786
 787 typedef struct _efi_file_io_interface {
 788         u64 revision;
 789         int (*open_volume)(struct _efi_file_io_interface *,
 790                            efi_file_handle_t **);
 791 } efi_file_io_interface_t;
 792
 793 #define EFI_FILE_MODE_READ      0x0000000000000001
 794 #define EFI_FILE_MODE_WRITE     0x0000000000000002
 795 #define EFI_FILE_MODE_CREATE    0x8000000000000000
 796
 797 #define EFI_INVALID_TABLE_ADDR          (~0UL)
 798
 799 /*
 800  * All runtime access to EFI goes through this structure:
 801  */
 802 extern struct efi {
 803         efi_system_table_t *systab;     /* EFI system table */
 804         unsigned int runtime_version;   /* Runtime services version */
 805         unsigned long mps;              /* MPS table */
 806         unsigned long acpi;             /* ACPI table  (IA64 ext 0.71) */
 807         unsigned long acpi20;           /* ACPI table  (ACPI 2.0) */
 808         unsigned long smbios;           /* SM BIOS table */
 809         unsigned long sal_systab;       /* SAL system table */
 810         unsigned long boot_info;        /* boot info table */
 811         unsigned long hcdp;             /* HCDP table */
 812         unsigned long uga;              /* UGA table */
 813         unsigned long uv_systab;        /* UV system table */
 814         unsigned long fw_vendor;        /* fw_vendor */
 815         unsigned long runtime;          /* runtime table */
 816         unsigned long config_table;     /* config tables */
 817         efi_get_time_t *get_time;
 818         efi_set_time_t *set_time;
 819         efi_get_wakeup_time_t *get_wakeup_time;
 820         efi_set_wakeup_time_t *set_wakeup_time;
 821         efi_get_variable_t *get_variable;
 822         efi_get_next_variable_t *get_next_variable;
 823         efi_set_variable_t *set_variable;
 824         efi_query_variable_info_t *query_variable_info;
 825         efi_update_capsule_t *update_capsule;
 826         efi_query_capsule_caps_t *query_capsule_caps;
 827         efi_get_next_high_mono_count_t *get_next_high_mono_count;
 828         efi_reset_system_t *reset_system;
 829         efi_set_virtual_address_map_t *set_virtual_address_map;
 830         struct efi_memory_map *memmap;
 831         unsigned long flags;
 832 } efi;
 833
 834 static inline int
 835 efi_guidcmp (efi_guid_t left, efi_guid_t right)
 836 {
 837         return memcmp(&left, &right, sizeof (efi_guid_t));
 838 }
 839
 840 static inline char *
 841 efi_guid_unparse(efi_guid_t *guid, char *out)
 842 {
 843         sprintf(out, "%pUl", guid->b);
 844         return out;
 845 }
 846
 847 extern void efi_init (void);
 848 extern void *efi_get_pal_addr (void);
 849 extern void efi_map_pal_code (void);
 850 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg);
 851 extern void efi_gettimeofday (struct timespec *ts);
 852 extern void efi_enter_virtual_mode (void);      /* switch EFI to virtual mode, if possible */
 853 #ifdef CONFIG_X86
 854 extern void efi_late_init(void);
 855 extern void efi_free_boot_services(void);
 856 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size);
 857 #else
 858 static inline void efi_late_init(void) {}
 859 static inline void efi_free_boot_services(void) {}
 860
 861 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size)
 862 {
 863         return EFI_SUCCESS;
 864 }
 865 #endif
 866 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr);
 867 extern int efi_config_init(efi_config_table_type_t *arch_tables);
 868 extern u64 efi_get_iobase (void);
 869 extern u32 efi_mem_type (unsigned long phys_addr);
 870 extern u64 efi_mem_attributes (unsigned long phys_addr);
 871 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size);
 872 extern int __init efi_uart_console_only (void);
 873 extern void efi_initialize_iomem_resources(struct resource *code_resource,
 874                 struct resource *data_resource, struct resource *bss_resource);
 875 extern void efi_get_time(struct timespec *now);
 876 extern void efi_reserve_boot_services(void);
 877 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose);
 878 extern struct efi_memory_map memmap;
 879
 880 extern int efi_reboot_quirk_mode;
 881 extern bool efi_poweroff_required(void);
 882
 883 /* Iterate through an efi_memory_map */
 884 #define for_each_efi_memory_desc(m, md)                                    \
 885         for ((md) = (m)->map;                                              \
 886              (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
 887              (md) = (void *)(md) + (m)->desc_size)
 888
 889 /**
 890  * efi_range_is_wc - check the WC bit on an address range
 891  * @start: starting kvirt address
 892  * @len: length of range
 893  *
 894  * Consult the EFI memory map and make sure it's ok to set this range WC.
 895  * Returns true or false.
 896  */
 897 static inline int efi_range_is_wc(unsigned long start, unsigned long len)
 898 {
 899         unsigned long i;
 900
 901         for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) {
 902                 unsigned long paddr = __pa(start + i);
 903                 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC))
 904                         return 0;
 905         }
 906         /* The range checked out */
 907         return 1;
 908 }
 909
 910 #ifdef CONFIG_EFI_PCDP
 911 extern int __init efi_setup_pcdp_console(char *);
 912 #endif
 913
 914 /*
 915  * We play games with efi_enabled so that the compiler will, if
 916  * possible, remove EFI-related code altogether.
 917  */
 918 #define EFI_BOOT                0       /* Were we booted from EFI? */
 919 #define EFI_SYSTEM_TABLES       1       /* Can we use EFI system tables? */
 920 #define EFI_CONFIG_TABLES       2       /* Can we use EFI config tables? */
 921 #define EFI_RUNTIME_SERVICES    3       /* Can we use runtime services? */
 922 #define EFI_MEMMAP              4       /* Can we use EFI memory map? */
 923 #define EFI_64BIT               5       /* Is the firmware 64-bit? */
 924 #define EFI_PARAVIRT            6       /* Access is via a paravirt interface */
 925 #define EFI_ARCH_1              7       /* First arch-specific bit */
 926
 927 #ifdef CONFIG_EFI
 928 /*
 929  * Test whether the above EFI_* bits are enabled.
 930  */
 931 static inline bool efi_enabled(int feature)
 932 {
 933         return test_bit(feature, &efi.flags) != 0;
 934 }
 935 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused);
 936 #else
 937 static inline bool efi_enabled(int feature)
 938 {
 939         return false;
 940 }
 941 static inline void
 942 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
 943 #endif
 944
 945 /*
 946  * Variable Attributes
 947  */
 948 #define EFI_VARIABLE_NON_VOLATILE       0x0000000000000001
 949 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002
 950 #define EFI_VARIABLE_RUNTIME_ACCESS     0x0000000000000004
 951 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008
 952 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010
 953 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020
 954 #define EFI_VARIABLE_APPEND_WRITE       0x0000000000000040
 955
 956 #define EFI_VARIABLE_MASK       (EFI_VARIABLE_NON_VOLATILE | \
 957                                 EFI_VARIABLE_BOOTSERVICE_ACCESS | \
 958                                 EFI_VARIABLE_RUNTIME_ACCESS | \
 959                                 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \
 960                                 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \
 961                                 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \
 962                                 EFI_VARIABLE_APPEND_WRITE)
 963 /*
 964  * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee"))
 965  * not including trailing NUL
 966  */
 967 #define EFI_VARIABLE_GUID_LEN 36
 968
 969 /*
 970  * The type of search to perform when calling boottime->locate_handle
 971  */
 972 #define EFI_LOCATE_ALL_HANDLES                  0
 973 #define EFI_LOCATE_BY_REGISTER_NOTIFY           1
 974 #define EFI_LOCATE_BY_PROTOCOL                  2
 975
 976 /*
 977  * EFI Device Path information
 978  */
 979 #define EFI_DEV_HW                      0x01
 980 #define  EFI_DEV_PCI                             1
 981 #define  EFI_DEV_PCCARD                          2
 982 #define  EFI_DEV_MEM_MAPPED                      3
 983 #define  EFI_DEV_VENDOR                          4
 984 #define  EFI_DEV_CONTROLLER                      5
 985 #define EFI_DEV_ACPI                    0x02
 986 #define   EFI_DEV_BASIC_ACPI                     1
 987 #define   EFI_DEV_EXPANDED_ACPI                  2
 988 #define EFI_DEV_MSG                     0x03
 989 #define   EFI_DEV_MSG_ATAPI                      1
 990 #define   EFI_DEV_MSG_SCSI                       2
 991 #define   EFI_DEV_MSG_FC                         3
 992 #define   EFI_DEV_MSG_1394                       4
 993 #define   EFI_DEV_MSG_USB                        5
 994 #define   EFI_DEV_MSG_USB_CLASS                 15
 995 #define   EFI_DEV_MSG_I20                        6
 996 #define   EFI_DEV_MSG_MAC                       11
 997 #define   EFI_DEV_MSG_IPV4                      12
 998 #define   EFI_DEV_MSG_IPV6                      13
 999 #define   EFI_DEV_MSG_INFINIBAND                 9
1000 #define   EFI_DEV_MSG_UART                      14
1001 #define   EFI_DEV_MSG_VENDOR                    10
1002 #define EFI_DEV_MEDIA                   0x04
1003 #define   EFI_DEV_MEDIA_HARD_DRIVE               1
1004 #define   EFI_DEV_MEDIA_CDROM                    2
1005 #define   EFI_DEV_MEDIA_VENDOR                   3
1006 #define   EFI_DEV_MEDIA_FILE                     4
1007 #define   EFI_DEV_MEDIA_PROTOCOL                 5
1008 #define EFI_DEV_BIOS_BOOT               0x05
1009 #define EFI_DEV_END_PATH                0x7F
1010 #define EFI_DEV_END_PATH2               0xFF
1011 #define   EFI_DEV_END_INSTANCE                  0x01
1012 #define   EFI_DEV_END_ENTIRE                    0xFF
1013
1014 struct efi_generic_dev_path {
1015         u8 type;
1016         u8 sub_type;
1017         u16 length;
1018 } __attribute ((packed));
1019
1020 static inline void memrange_efi_to_native(u64 *addr, u64 *npages)
1021 {
1022         *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr);
1023         *addr &= PAGE_MASK;
1024 }
1025
1026 /*
1027  * EFI Variable support.
1028  *
1029  * Different firmware drivers can expose their EFI-like variables using
1030  * the following.
1031  */
1032
1033 struct efivar_operations {
1034         efi_get_variable_t *get_variable;
1035         efi_get_next_variable_t *get_next_variable;
1036         efi_set_variable_t *set_variable;
1037         efi_query_variable_store_t *query_variable_store;
1038 };
1039
1040 struct efivars {
1041         /*
1042          * ->lock protects two things:
1043          * 1) efivarfs_list and efivars_sysfs_list
1044          * 2) ->ops calls
1045          */
1046         spinlock_t lock;
1047         struct kset *kset;
1048         struct kobject *kobject;
1049         const struct efivar_operations *ops;
1050 };
1051
1052 /*
1053  * The maximum size of VariableName + Data = 1024
1054  * Therefore, it's reasonable to save that much
1055  * space in each part of the structure,
1056  * and we use a page for reading/writing.
1057  */
1058
1059 #define EFI_VAR_NAME_LEN        1024
1060
1061 struct efi_variable {
1062         efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
1063         efi_guid_t    VendorGuid;
1064         unsigned long DataSize;
1065         __u8          Data[1024];
1066         efi_status_t  Status;
1067         __u32         Attributes;
1068 } __attribute__((packed));
1069
1070 struct efivar_entry {
1071         struct efi_variable var;
1072         struct list_head list;
1073         struct kobject kobj;
1074         bool scanning;
1075         bool deleting;
1076 };
1077
1078 struct efi_simple_text_output_protocol_32 {
1079         u32 reset;
1080         u32 output_string;
1081         u32 test_string;
1082 };
1083
1084 struct efi_simple_text_output_protocol_64 {
1085         u64 reset;
1086         u64 output_string;
1087         u64 test_string;
1088 };
1089
1090 struct efi_simple_text_output_protocol {
1091         void *reset;
1092         efi_status_t (*output_string)(void *, void *);
1093         void *test_string;
1094 };
1095
1096 extern struct list_head efivar_sysfs_list;
1097
1098 static inline void
1099 efivar_unregister(struct efivar_entry *var)
1100 {
1101         kobject_put(&var->kobj);
1102 }
1103
1104 int efivars_register(struct efivars *efivars,
1105                      const struct efivar_operations *ops,
1106                      struct kobject *kobject);
1107 int efivars_unregister(struct efivars *efivars);
1108 struct kobject *efivars_kobject(void);
1109
1110 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
1111                 void *data, bool atomic, bool duplicates,
1112                 struct list_head *head);
1113
1114 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
1115 void efivar_entry_remove(struct efivar_entry *entry);
1116
1117 int __efivar_entry_delete(struct efivar_entry *entry);
1118 int efivar_entry_delete(struct efivar_entry *entry);
1119
1120 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size);
1121 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1122                        unsigned long *size, void *data);
1123 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
1124                      unsigned long *size, void *data);
1125 int efivar_entry_set(struct efivar_entry *entry, u32 attributes,
1126                      unsigned long size, void *data, struct list_head *head);
1127 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes,
1128                               unsigned long *size, void *data, bool *set);
1129 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes,
1130                           bool block, unsigned long size, void *data);
1131
1132 void efivar_entry_iter_begin(void);
1133 void efivar_entry_iter_end(void);
1134
1135 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1136                         struct list_head *head, void *data,
1137                         struct efivar_entry **prev);
1138 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *),
1139                       struct list_head *head, void *data);
1140
1141 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
1142                                        struct list_head *head, bool remove);
1143
1144 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len);
1145
1146 extern struct work_struct efivar_work;
1147 void efivar_run_worker(void);
1148
1149 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE)
1150 int efivars_sysfs_init(void);
1151
1152 #define EFIVARS_DATA_SIZE_MAX 1024
1153
1154 #endif /* CONFIG_EFI_VARS */
1155
1156 #ifdef CONFIG_EFI_RUNTIME_MAP
1157 int efi_runtime_map_init(struct kobject *);
1158 void efi_runtime_map_setup(void *, int, u32);
1159 int efi_get_runtime_map_size(void);
1160 int efi_get_runtime_map_desc_size(void);
1161 int efi_runtime_map_copy(void *buf, size_t bufsz);
1162 #else
1163 static inline int efi_runtime_map_init(struct kobject *kobj)
1164 {
1165         return 0;
1166 }
1167
1168 static inline void
1169 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {}
1170
1171 static inline int efi_get_runtime_map_size(void)
1172 {
1173         return 0;
1174 }
1175
1176 static inline int efi_get_runtime_map_desc_size(void)
1177 {
1178         return 0;
1179 }
1180
1181 static inline int efi_runtime_map_copy(void *buf, size_t bufsz)
1182 {
1183         return 0;
1184 }
1185
1186 #endif
1187
1188 /* prototypes shared between arch specific and generic stub code */
1189
1190 #define pr_efi(sys_table, msg)     efi_printk(sys_table, "EFI stub: "msg)
1191 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg)
1192
1193 void efi_printk(efi_system_table_t *sys_table_arg, char *str);
1194
1195 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
1196               unsigned long addr);
1197
1198 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg,
1199                           efi_loaded_image_t *image, int *cmd_line_len);
1200
1201 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg,
1202                                 efi_memory_desc_t **map,
1203                                 unsigned long *map_size,
1204                                 unsigned long *desc_size,
1205                                 u32 *desc_ver,
1206                                 unsigned long *key_ptr);
1207
1208 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg,
1209                            unsigned long size, unsigned long align,
1210                            unsigned long *addr);
1211
1212 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg,
1213                             unsigned long size, unsigned long align,
1214                             unsigned long *addr, unsigned long max);
1215
1216 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg,
1217                                  unsigned long *image_addr,
1218                                  unsigned long image_size,
1219                                  unsigned long alloc_size,
1220                                  unsigned long preferred_addr,
1221                                  unsigned long alignment);
1222
1223 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
1224                                   efi_loaded_image_t *image,
1225                                   char *cmd_line, char *option_string,
1226                                   unsigned long max_addr,
1227                                   unsigned long *load_addr,
1228                                   unsigned long *load_size);
1229
1230 #endif /* _LINUX_EFI_H */