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_PERSISTENT_MEMORY 14 89 #define EFI_MAX_MEMORY_TYPE 15 90 91 /* Attribute values: */ 92 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 93 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 94 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 95 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 96 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 97 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 98 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 99 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 100 #define EFI_MEMORY_MORE_RELIABLE \ 101 ((u64)0x0000000000010000ULL) /* higher reliability */ 102 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 103 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 104 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 105 106 #define EFI_PAGE_SHIFT 12 107 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 108 109 typedef struct { 110 u32 type; 111 u32 pad; 112 u64 phys_addr; 113 u64 virt_addr; 114 u64 num_pages; 115 u64 attribute; 116 } efi_memory_desc_t; 117 118 typedef struct { 119 efi_guid_t guid; 120 u32 headersize; 121 u32 flags; 122 u32 imagesize; 123 } efi_capsule_header_t; 124 125 /* 126 * Allocation types for calls to boottime->allocate_pages. 127 */ 128 #define EFI_ALLOCATE_ANY_PAGES 0 129 #define EFI_ALLOCATE_MAX_ADDRESS 1 130 #define EFI_ALLOCATE_ADDRESS 2 131 #define EFI_MAX_ALLOCATE_TYPE 3 132 133 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 134 135 /* 136 * Types and defines for Time Services 137 */ 138 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 139 #define EFI_TIME_IN_DAYLIGHT 0x2 140 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 141 142 typedef struct { 143 u16 year; 144 u8 month; 145 u8 day; 146 u8 hour; 147 u8 minute; 148 u8 second; 149 u8 pad1; 150 u32 nanosecond; 151 s16 timezone; 152 u8 daylight; 153 u8 pad2; 154 } efi_time_t; 155 156 typedef struct { 157 u32 resolution; 158 u32 accuracy; 159 u8 sets_to_zero; 160 } efi_time_cap_t; 161 162 typedef struct { 163 efi_table_hdr_t hdr; 164 u32 raise_tpl; 165 u32 restore_tpl; 166 u32 allocate_pages; 167 u32 free_pages; 168 u32 get_memory_map; 169 u32 allocate_pool; 170 u32 free_pool; 171 u32 create_event; 172 u32 set_timer; 173 u32 wait_for_event; 174 u32 signal_event; 175 u32 close_event; 176 u32 check_event; 177 u32 install_protocol_interface; 178 u32 reinstall_protocol_interface; 179 u32 uninstall_protocol_interface; 180 u32 handle_protocol; 181 u32 __reserved; 182 u32 register_protocol_notify; 183 u32 locate_handle; 184 u32 locate_device_path; 185 u32 install_configuration_table; 186 u32 load_image; 187 u32 start_image; 188 u32 exit; 189 u32 unload_image; 190 u32 exit_boot_services; 191 u32 get_next_monotonic_count; 192 u32 stall; 193 u32 set_watchdog_timer; 194 u32 connect_controller; 195 u32 disconnect_controller; 196 u32 open_protocol; 197 u32 close_protocol; 198 u32 open_protocol_information; 199 u32 protocols_per_handle; 200 u32 locate_handle_buffer; 201 u32 locate_protocol; 202 u32 install_multiple_protocol_interfaces; 203 u32 uninstall_multiple_protocol_interfaces; 204 u32 calculate_crc32; 205 u32 copy_mem; 206 u32 set_mem; 207 u32 create_event_ex; 208 } __packed efi_boot_services_32_t; 209 210 typedef struct { 211 efi_table_hdr_t hdr; 212 u64 raise_tpl; 213 u64 restore_tpl; 214 u64 allocate_pages; 215 u64 free_pages; 216 u64 get_memory_map; 217 u64 allocate_pool; 218 u64 free_pool; 219 u64 create_event; 220 u64 set_timer; 221 u64 wait_for_event; 222 u64 signal_event; 223 u64 close_event; 224 u64 check_event; 225 u64 install_protocol_interface; 226 u64 reinstall_protocol_interface; 227 u64 uninstall_protocol_interface; 228 u64 handle_protocol; 229 u64 __reserved; 230 u64 register_protocol_notify; 231 u64 locate_handle; 232 u64 locate_device_path; 233 u64 install_configuration_table; 234 u64 load_image; 235 u64 start_image; 236 u64 exit; 237 u64 unload_image; 238 u64 exit_boot_services; 239 u64 get_next_monotonic_count; 240 u64 stall; 241 u64 set_watchdog_timer; 242 u64 connect_controller; 243 u64 disconnect_controller; 244 u64 open_protocol; 245 u64 close_protocol; 246 u64 open_protocol_information; 247 u64 protocols_per_handle; 248 u64 locate_handle_buffer; 249 u64 locate_protocol; 250 u64 install_multiple_protocol_interfaces; 251 u64 uninstall_multiple_protocol_interfaces; 252 u64 calculate_crc32; 253 u64 copy_mem; 254 u64 set_mem; 255 u64 create_event_ex; 256 } __packed efi_boot_services_64_t; 257 258 /* 259 * EFI Boot Services table 260 */ 261 typedef struct { 262 efi_table_hdr_t hdr; 263 void *raise_tpl; 264 void *restore_tpl; 265 efi_status_t (*allocate_pages)(int, int, unsigned long, 266 efi_physical_addr_t *); 267 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 268 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 269 unsigned long *, u32 *); 270 efi_status_t (*allocate_pool)(int, unsigned long, void **); 271 efi_status_t (*free_pool)(void *); 272 void *create_event; 273 void *set_timer; 274 void *wait_for_event; 275 void *signal_event; 276 void *close_event; 277 void *check_event; 278 void *install_protocol_interface; 279 void *reinstall_protocol_interface; 280 void *uninstall_protocol_interface; 281 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 282 void *__reserved; 283 void *register_protocol_notify; 284 void *locate_handle; 285 void *locate_device_path; 286 void *install_configuration_table; 287 void *load_image; 288 void *start_image; 289 void *exit; 290 void *unload_image; 291 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 292 void *get_next_monotonic_count; 293 void *stall; 294 void *set_watchdog_timer; 295 void *connect_controller; 296 void *disconnect_controller; 297 void *open_protocol; 298 void *close_protocol; 299 void *open_protocol_information; 300 void *protocols_per_handle; 301 void *locate_handle_buffer; 302 void *locate_protocol; 303 void *install_multiple_protocol_interfaces; 304 void *uninstall_multiple_protocol_interfaces; 305 void *calculate_crc32; 306 void *copy_mem; 307 void *set_mem; 308 void *create_event_ex; 309 } efi_boot_services_t; 310 311 typedef enum { 312 EfiPciIoWidthUint8, 313 EfiPciIoWidthUint16, 314 EfiPciIoWidthUint32, 315 EfiPciIoWidthUint64, 316 EfiPciIoWidthFifoUint8, 317 EfiPciIoWidthFifoUint16, 318 EfiPciIoWidthFifoUint32, 319 EfiPciIoWidthFifoUint64, 320 EfiPciIoWidthFillUint8, 321 EfiPciIoWidthFillUint16, 322 EfiPciIoWidthFillUint32, 323 EfiPciIoWidthFillUint64, 324 EfiPciIoWidthMaximum 325 } EFI_PCI_IO_PROTOCOL_WIDTH; 326 327 typedef enum { 328 EfiPciIoAttributeOperationGet, 329 EfiPciIoAttributeOperationSet, 330 EfiPciIoAttributeOperationEnable, 331 EfiPciIoAttributeOperationDisable, 332 EfiPciIoAttributeOperationSupported, 333 EfiPciIoAttributeOperationMaximum 334 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 335 336 typedef struct { 337 u32 read; 338 u32 write; 339 } efi_pci_io_protocol_access_32_t; 340 341 typedef struct { 342 u64 read; 343 u64 write; 344 } efi_pci_io_protocol_access_64_t; 345 346 typedef struct { 347 void *read; 348 void *write; 349 } efi_pci_io_protocol_access_t; 350 351 typedef struct { 352 u32 poll_mem; 353 u32 poll_io; 354 efi_pci_io_protocol_access_32_t mem; 355 efi_pci_io_protocol_access_32_t io; 356 efi_pci_io_protocol_access_32_t pci; 357 u32 copy_mem; 358 u32 map; 359 u32 unmap; 360 u32 allocate_buffer; 361 u32 free_buffer; 362 u32 flush; 363 u32 get_location; 364 u32 attributes; 365 u32 get_bar_attributes; 366 u32 set_bar_attributes; 367 uint64_t romsize; 368 void *romimage; 369 } efi_pci_io_protocol_32; 370 371 typedef struct { 372 u64 poll_mem; 373 u64 poll_io; 374 efi_pci_io_protocol_access_64_t mem; 375 efi_pci_io_protocol_access_64_t io; 376 efi_pci_io_protocol_access_64_t pci; 377 u64 copy_mem; 378 u64 map; 379 u64 unmap; 380 u64 allocate_buffer; 381 u64 free_buffer; 382 u64 flush; 383 u64 get_location; 384 u64 attributes; 385 u64 get_bar_attributes; 386 u64 set_bar_attributes; 387 uint64_t romsize; 388 void *romimage; 389 } efi_pci_io_protocol_64; 390 391 typedef struct { 392 void *poll_mem; 393 void *poll_io; 394 efi_pci_io_protocol_access_t mem; 395 efi_pci_io_protocol_access_t io; 396 efi_pci_io_protocol_access_t pci; 397 void *copy_mem; 398 void *map; 399 void *unmap; 400 void *allocate_buffer; 401 void *free_buffer; 402 void *flush; 403 void *get_location; 404 void *attributes; 405 void *get_bar_attributes; 406 void *set_bar_attributes; 407 uint64_t romsize; 408 void *romimage; 409 } efi_pci_io_protocol; 410 411 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 412 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 413 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 414 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 415 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 416 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 417 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 419 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 420 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 421 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 423 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 424 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 425 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 426 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 427 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 428 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 429 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 430 431 /* 432 * Types and defines for EFI ResetSystem 433 */ 434 #define EFI_RESET_COLD 0 435 #define EFI_RESET_WARM 1 436 #define EFI_RESET_SHUTDOWN 2 437 438 /* 439 * EFI Runtime Services table 440 */ 441 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 442 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 443 444 typedef struct { 445 efi_table_hdr_t hdr; 446 u32 get_time; 447 u32 set_time; 448 u32 get_wakeup_time; 449 u32 set_wakeup_time; 450 u32 set_virtual_address_map; 451 u32 convert_pointer; 452 u32 get_variable; 453 u32 get_next_variable; 454 u32 set_variable; 455 u32 get_next_high_mono_count; 456 u32 reset_system; 457 u32 update_capsule; 458 u32 query_capsule_caps; 459 u32 query_variable_info; 460 } efi_runtime_services_32_t; 461 462 typedef struct { 463 efi_table_hdr_t hdr; 464 u64 get_time; 465 u64 set_time; 466 u64 get_wakeup_time; 467 u64 set_wakeup_time; 468 u64 set_virtual_address_map; 469 u64 convert_pointer; 470 u64 get_variable; 471 u64 get_next_variable; 472 u64 set_variable; 473 u64 get_next_high_mono_count; 474 u64 reset_system; 475 u64 update_capsule; 476 u64 query_capsule_caps; 477 u64 query_variable_info; 478 } efi_runtime_services_64_t; 479 480 typedef struct { 481 efi_table_hdr_t hdr; 482 void *get_time; 483 void *set_time; 484 void *get_wakeup_time; 485 void *set_wakeup_time; 486 void *set_virtual_address_map; 487 void *convert_pointer; 488 void *get_variable; 489 void *get_next_variable; 490 void *set_variable; 491 void *get_next_high_mono_count; 492 void *reset_system; 493 void *update_capsule; 494 void *query_capsule_caps; 495 void *query_variable_info; 496 } efi_runtime_services_t; 497 498 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 499 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 500 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 501 efi_time_t *tm); 502 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 503 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 504 unsigned long *data_size, void *data); 505 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 506 efi_guid_t *vendor); 507 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 508 u32 attr, unsigned long data_size, 509 void *data); 510 typedef efi_status_t 511 efi_set_variable_nonblocking_t(efi_char16_t *name, efi_guid_t *vendor, 512 u32 attr, unsigned long data_size, void *data); 513 514 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 515 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 516 unsigned long data_size, efi_char16_t *data); 517 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 518 unsigned long descriptor_size, 519 u32 descriptor_version, 520 efi_memory_desc_t *virtual_map); 521 typedef efi_status_t efi_query_variable_info_t(u32 attr, 522 u64 *storage_space, 523 u64 *remaining_space, 524 u64 *max_variable_size); 525 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 526 unsigned long count, 527 unsigned long sg_list); 528 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 529 unsigned long count, 530 u64 *max_size, 531 int *reset_type); 532 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size); 533 534 void efi_native_runtime_setup(void); 535 536 /* 537 * EFI Configuration Table and GUID definitions 538 */ 539 #define NULL_GUID \ 540 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ) 541 542 #define MPS_TABLE_GUID \ 543 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 544 545 #define ACPI_TABLE_GUID \ 546 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 547 548 #define ACPI_20_TABLE_GUID \ 549 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 ) 550 551 #define SMBIOS_TABLE_GUID \ 552 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 553 554 #define SMBIOS3_TABLE_GUID \ 555 EFI_GUID( 0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 ) 556 557 #define SAL_SYSTEM_TABLE_GUID \ 558 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 559 560 #define HCDP_TABLE_GUID \ 561 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 ) 562 563 #define UGA_IO_PROTOCOL_GUID \ 564 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 ) 565 566 #define EFI_GLOBAL_VARIABLE_GUID \ 567 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c ) 568 569 #define UV_SYSTEM_TABLE_GUID \ 570 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 ) 571 572 #define LINUX_EFI_CRASH_GUID \ 573 EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 ) 574 575 #define LOADED_IMAGE_PROTOCOL_GUID \ 576 EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 577 578 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 579 EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a ) 580 581 #define EFI_UGA_PROTOCOL_GUID \ 582 EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 ) 583 584 #define EFI_PCI_IO_PROTOCOL_GUID \ 585 EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a ) 586 587 #define EFI_FILE_INFO_ID \ 588 EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 589 590 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 591 EFI_GUID( 0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 ) 592 593 #define EFI_FILE_SYSTEM_GUID \ 594 EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 595 596 #define DEVICE_TREE_GUID \ 597 EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 ) 598 599 #define EFI_PROPERTIES_TABLE_GUID \ 600 EFI_GUID( 0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5 ) 601 602 typedef struct { 603 efi_guid_t guid; 604 u64 table; 605 } efi_config_table_64_t; 606 607 typedef struct { 608 efi_guid_t guid; 609 u32 table; 610 } efi_config_table_32_t; 611 612 typedef struct { 613 efi_guid_t guid; 614 unsigned long table; 615 } efi_config_table_t; 616 617 typedef struct { 618 efi_guid_t guid; 619 const char *name; 620 unsigned long *ptr; 621 } efi_config_table_type_t; 622 623 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 624 625 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 626 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 627 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 628 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 629 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 630 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 631 632 typedef struct { 633 efi_table_hdr_t hdr; 634 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 635 u32 fw_revision; 636 u32 __pad1; 637 u64 con_in_handle; 638 u64 con_in; 639 u64 con_out_handle; 640 u64 con_out; 641 u64 stderr_handle; 642 u64 stderr; 643 u64 runtime; 644 u64 boottime; 645 u32 nr_tables; 646 u32 __pad2; 647 u64 tables; 648 } efi_system_table_64_t; 649 650 typedef struct { 651 efi_table_hdr_t hdr; 652 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 653 u32 fw_revision; 654 u32 con_in_handle; 655 u32 con_in; 656 u32 con_out_handle; 657 u32 con_out; 658 u32 stderr_handle; 659 u32 stderr; 660 u32 runtime; 661 u32 boottime; 662 u32 nr_tables; 663 u32 tables; 664 } efi_system_table_32_t; 665 666 typedef struct { 667 efi_table_hdr_t hdr; 668 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 669 u32 fw_revision; 670 unsigned long con_in_handle; 671 unsigned long con_in; 672 unsigned long con_out_handle; 673 unsigned long con_out; 674 unsigned long stderr_handle; 675 unsigned long stderr; 676 efi_runtime_services_t *runtime; 677 efi_boot_services_t *boottime; 678 unsigned long nr_tables; 679 unsigned long tables; 680 } efi_system_table_t; 681 682 struct efi_memory_map { 683 phys_addr_t phys_map; 684 void *map; 685 void *map_end; 686 int nr_map; 687 unsigned long desc_version; 688 unsigned long desc_size; 689 }; 690 691 struct efi_fdt_params { 692 u64 system_table; 693 u64 mmap; 694 u32 mmap_size; 695 u32 desc_size; 696 u32 desc_ver; 697 }; 698 699 typedef struct { 700 u32 revision; 701 u32 parent_handle; 702 u32 system_table; 703 u32 device_handle; 704 u32 file_path; 705 u32 reserved; 706 u32 load_options_size; 707 u32 load_options; 708 u32 image_base; 709 __aligned_u64 image_size; 710 unsigned int image_code_type; 711 unsigned int image_data_type; 712 unsigned long unload; 713 } efi_loaded_image_32_t; 714 715 typedef struct { 716 u32 revision; 717 u64 parent_handle; 718 u64 system_table; 719 u64 device_handle; 720 u64 file_path; 721 u64 reserved; 722 u32 load_options_size; 723 u64 load_options; 724 u64 image_base; 725 __aligned_u64 image_size; 726 unsigned int image_code_type; 727 unsigned int image_data_type; 728 unsigned long unload; 729 } efi_loaded_image_64_t; 730 731 typedef struct { 732 u32 revision; 733 void *parent_handle; 734 efi_system_table_t *system_table; 735 void *device_handle; 736 void *file_path; 737 void *reserved; 738 u32 load_options_size; 739 void *load_options; 740 void *image_base; 741 __aligned_u64 image_size; 742 unsigned int image_code_type; 743 unsigned int image_data_type; 744 unsigned long unload; 745 } efi_loaded_image_t; 746 747 748 typedef struct { 749 u64 size; 750 u64 file_size; 751 u64 phys_size; 752 efi_time_t create_time; 753 efi_time_t last_access_time; 754 efi_time_t modification_time; 755 __aligned_u64 attribute; 756 efi_char16_t filename[1]; 757 } efi_file_info_t; 758 759 typedef struct { 760 u64 revision; 761 u32 open; 762 u32 close; 763 u32 delete; 764 u32 read; 765 u32 write; 766 u32 get_position; 767 u32 set_position; 768 u32 get_info; 769 u32 set_info; 770 u32 flush; 771 } efi_file_handle_32_t; 772 773 typedef struct { 774 u64 revision; 775 u64 open; 776 u64 close; 777 u64 delete; 778 u64 read; 779 u64 write; 780 u64 get_position; 781 u64 set_position; 782 u64 get_info; 783 u64 set_info; 784 u64 flush; 785 } efi_file_handle_64_t; 786 787 typedef struct _efi_file_handle { 788 u64 revision; 789 efi_status_t (*open)(struct _efi_file_handle *, 790 struct _efi_file_handle **, 791 efi_char16_t *, u64, u64); 792 efi_status_t (*close)(struct _efi_file_handle *); 793 void *delete; 794 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 795 void *); 796 void *write; 797 void *get_position; 798 void *set_position; 799 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 800 unsigned long *, void *); 801 void *set_info; 802 void *flush; 803 } efi_file_handle_t; 804 805 typedef struct _efi_file_io_interface { 806 u64 revision; 807 int (*open_volume)(struct _efi_file_io_interface *, 808 efi_file_handle_t **); 809 } efi_file_io_interface_t; 810 811 #define EFI_FILE_MODE_READ 0x0000000000000001 812 #define EFI_FILE_MODE_WRITE 0x0000000000000002 813 #define EFI_FILE_MODE_CREATE 0x8000000000000000 814 815 typedef struct { 816 u32 version; 817 u32 length; 818 u64 memory_protection_attribute; 819 } efi_properties_table_t; 820 821 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 822 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 823 824 #define EFI_INVALID_TABLE_ADDR (~0UL) 825 826 /* 827 * All runtime access to EFI goes through this structure: 828 */ 829 extern struct efi { 830 efi_system_table_t *systab; /* EFI system table */ 831 unsigned int runtime_version; /* Runtime services version */ 832 unsigned long mps; /* MPS table */ 833 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 834 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 835 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 836 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 837 unsigned long sal_systab; /* SAL system table */ 838 unsigned long boot_info; /* boot info table */ 839 unsigned long hcdp; /* HCDP table */ 840 unsigned long uga; /* UGA table */ 841 unsigned long uv_systab; /* UV system table */ 842 unsigned long fw_vendor; /* fw_vendor */ 843 unsigned long runtime; /* runtime table */ 844 unsigned long config_table; /* config tables */ 845 unsigned long esrt; /* ESRT table */ 846 unsigned long properties_table; /* properties table */ 847 efi_get_time_t *get_time; 848 efi_set_time_t *set_time; 849 efi_get_wakeup_time_t *get_wakeup_time; 850 efi_set_wakeup_time_t *set_wakeup_time; 851 efi_get_variable_t *get_variable; 852 efi_get_next_variable_t *get_next_variable; 853 efi_set_variable_t *set_variable; 854 efi_set_variable_nonblocking_t *set_variable_nonblocking; 855 efi_query_variable_info_t *query_variable_info; 856 efi_update_capsule_t *update_capsule; 857 efi_query_capsule_caps_t *query_capsule_caps; 858 efi_get_next_high_mono_count_t *get_next_high_mono_count; 859 efi_reset_system_t *reset_system; 860 efi_set_virtual_address_map_t *set_virtual_address_map; 861 struct efi_memory_map *memmap; 862 unsigned long flags; 863 } efi; 864 865 static inline int 866 efi_guidcmp (efi_guid_t left, efi_guid_t right) 867 { 868 return memcmp(&left, &right, sizeof (efi_guid_t)); 869 } 870 871 static inline char * 872 efi_guid_to_str(efi_guid_t *guid, char *out) 873 { 874 sprintf(out, "%pUl", guid->b); 875 return out; 876 } 877 878 extern void efi_init (void); 879 extern void *efi_get_pal_addr (void); 880 extern void efi_map_pal_code (void); 881 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 882 extern void efi_gettimeofday (struct timespec *ts); 883 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 884 #ifdef CONFIG_X86 885 extern void efi_late_init(void); 886 extern void efi_free_boot_services(void); 887 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size); 888 extern void efi_find_mirror(void); 889 #else 890 static inline void efi_late_init(void) {} 891 static inline void efi_free_boot_services(void) {} 892 893 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) 894 { 895 return EFI_SUCCESS; 896 } 897 #endif 898 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 899 extern int efi_config_init(efi_config_table_type_t *arch_tables); 900 #ifdef CONFIG_EFI_ESRT 901 extern void __init efi_esrt_init(void); 902 #else 903 static inline void efi_esrt_init(void) { } 904 #endif 905 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 906 efi_config_table_type_t *arch_tables); 907 extern u64 efi_get_iobase (void); 908 extern u32 efi_mem_type (unsigned long phys_addr); 909 extern u64 efi_mem_attributes (unsigned long phys_addr); 910 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 911 extern int __init efi_uart_console_only (void); 912 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 913 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 914 extern void efi_initialize_iomem_resources(struct resource *code_resource, 915 struct resource *data_resource, struct resource *bss_resource); 916 extern void efi_get_time(struct timespec *now); 917 extern void efi_reserve_boot_services(void); 918 extern int efi_get_fdt_params(struct efi_fdt_params *params); 919 extern struct efi_memory_map memmap; 920 extern struct kobject *efi_kobj; 921 922 extern int efi_reboot_quirk_mode; 923 extern bool efi_poweroff_required(void); 924 925 #ifdef CONFIG_EFI_FAKE_MEMMAP 926 extern void __init efi_fake_memmap(void); 927 #else 928 static inline void efi_fake_memmap(void) { } 929 #endif 930 931 /* Iterate through an efi_memory_map */ 932 #define for_each_efi_memory_desc(m, md) \ 933 for ((md) = (m)->map; \ 934 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ 935 (md) = (void *)(md) + (m)->desc_size) 936 937 /* 938 * Format an EFI memory descriptor's type and attributes to a user-provided 939 * character buffer, as per snprintf(), and return the buffer. 940 */ 941 char * __init efi_md_typeattr_format(char *buf, size_t size, 942 const efi_memory_desc_t *md); 943 944 /** 945 * efi_range_is_wc - check the WC bit on an address range 946 * @start: starting kvirt address 947 * @len: length of range 948 * 949 * Consult the EFI memory map and make sure it's ok to set this range WC. 950 * Returns true or false. 951 */ 952 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 953 { 954 unsigned long i; 955 956 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 957 unsigned long paddr = __pa(start + i); 958 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 959 return 0; 960 } 961 /* The range checked out */ 962 return 1; 963 } 964 965 #ifdef CONFIG_EFI_PCDP 966 extern int __init efi_setup_pcdp_console(char *); 967 #endif 968 969 /* 970 * We play games with efi_enabled so that the compiler will, if 971 * possible, remove EFI-related code altogether. 972 */ 973 #define EFI_BOOT 0 /* Were we booted from EFI? */ 974 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ 975 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 976 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 977 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 978 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 979 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 980 #define EFI_ARCH_1 7 /* First arch-specific bit */ 981 #define EFI_DBG 8 /* Print additional debug info at runtime */ 982 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 983 984 #ifdef CONFIG_EFI 985 /* 986 * Test whether the above EFI_* bits are enabled. 987 */ 988 static inline bool efi_enabled(int feature) 989 { 990 return test_bit(feature, &efi.flags) != 0; 991 } 992 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 993 #else 994 static inline bool efi_enabled(int feature) 995 { 996 return false; 997 } 998 static inline void 999 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1000 #endif 1001 1002 /* 1003 * Variable Attributes 1004 */ 1005 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1006 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1007 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1008 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1009 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1010 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1011 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1012 1013 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1014 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1015 EFI_VARIABLE_RUNTIME_ACCESS | \ 1016 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1017 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1018 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1019 EFI_VARIABLE_APPEND_WRITE) 1020 /* 1021 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1022 * not including trailing NUL 1023 */ 1024 #define EFI_VARIABLE_GUID_LEN 36 1025 1026 /* 1027 * The type of search to perform when calling boottime->locate_handle 1028 */ 1029 #define EFI_LOCATE_ALL_HANDLES 0 1030 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1031 #define EFI_LOCATE_BY_PROTOCOL 2 1032 1033 /* 1034 * EFI Device Path information 1035 */ 1036 #define EFI_DEV_HW 0x01 1037 #define EFI_DEV_PCI 1 1038 #define EFI_DEV_PCCARD 2 1039 #define EFI_DEV_MEM_MAPPED 3 1040 #define EFI_DEV_VENDOR 4 1041 #define EFI_DEV_CONTROLLER 5 1042 #define EFI_DEV_ACPI 0x02 1043 #define EFI_DEV_BASIC_ACPI 1 1044 #define EFI_DEV_EXPANDED_ACPI 2 1045 #define EFI_DEV_MSG 0x03 1046 #define EFI_DEV_MSG_ATAPI 1 1047 #define EFI_DEV_MSG_SCSI 2 1048 #define EFI_DEV_MSG_FC 3 1049 #define EFI_DEV_MSG_1394 4 1050 #define EFI_DEV_MSG_USB 5 1051 #define EFI_DEV_MSG_USB_CLASS 15 1052 #define EFI_DEV_MSG_I20 6 1053 #define EFI_DEV_MSG_MAC 11 1054 #define EFI_DEV_MSG_IPV4 12 1055 #define EFI_DEV_MSG_IPV6 13 1056 #define EFI_DEV_MSG_INFINIBAND 9 1057 #define EFI_DEV_MSG_UART 14 1058 #define EFI_DEV_MSG_VENDOR 10 1059 #define EFI_DEV_MEDIA 0x04 1060 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1061 #define EFI_DEV_MEDIA_CDROM 2 1062 #define EFI_DEV_MEDIA_VENDOR 3 1063 #define EFI_DEV_MEDIA_FILE 4 1064 #define EFI_DEV_MEDIA_PROTOCOL 5 1065 #define EFI_DEV_BIOS_BOOT 0x05 1066 #define EFI_DEV_END_PATH 0x7F 1067 #define EFI_DEV_END_PATH2 0xFF 1068 #define EFI_DEV_END_INSTANCE 0x01 1069 #define EFI_DEV_END_ENTIRE 0xFF 1070 1071 struct efi_generic_dev_path { 1072 u8 type; 1073 u8 sub_type; 1074 u16 length; 1075 } __attribute ((packed)); 1076 1077 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1078 { 1079 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1080 *addr &= PAGE_MASK; 1081 } 1082 1083 /* 1084 * EFI Variable support. 1085 * 1086 * Different firmware drivers can expose their EFI-like variables using 1087 * the following. 1088 */ 1089 1090 struct efivar_operations { 1091 efi_get_variable_t *get_variable; 1092 efi_get_next_variable_t *get_next_variable; 1093 efi_set_variable_t *set_variable; 1094 efi_set_variable_nonblocking_t *set_variable_nonblocking; 1095 efi_query_variable_store_t *query_variable_store; 1096 }; 1097 1098 struct efivars { 1099 /* 1100 * ->lock protects two things: 1101 * 1) efivarfs_list and efivars_sysfs_list 1102 * 2) ->ops calls 1103 */ 1104 spinlock_t lock; 1105 struct kset *kset; 1106 struct kobject *kobject; 1107 const struct efivar_operations *ops; 1108 }; 1109 1110 /* 1111 * The maximum size of VariableName + Data = 1024 1112 * Therefore, it's reasonable to save that much 1113 * space in each part of the structure, 1114 * and we use a page for reading/writing. 1115 */ 1116 1117 #define EFI_VAR_NAME_LEN 1024 1118 1119 struct efi_variable { 1120 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1121 efi_guid_t VendorGuid; 1122 unsigned long DataSize; 1123 __u8 Data[1024]; 1124 efi_status_t Status; 1125 __u32 Attributes; 1126 } __attribute__((packed)); 1127 1128 struct efivar_entry { 1129 struct efi_variable var; 1130 struct list_head list; 1131 struct kobject kobj; 1132 bool scanning; 1133 bool deleting; 1134 }; 1135 1136 struct efi_simple_text_output_protocol_32 { 1137 u32 reset; 1138 u32 output_string; 1139 u32 test_string; 1140 }; 1141 1142 struct efi_simple_text_output_protocol_64 { 1143 u64 reset; 1144 u64 output_string; 1145 u64 test_string; 1146 }; 1147 1148 struct efi_simple_text_output_protocol { 1149 void *reset; 1150 efi_status_t (*output_string)(void *, void *); 1151 void *test_string; 1152 }; 1153 1154 extern struct list_head efivar_sysfs_list; 1155 1156 static inline void 1157 efivar_unregister(struct efivar_entry *var) 1158 { 1159 kobject_put(&var->kobj); 1160 } 1161 1162 int efivars_register(struct efivars *efivars, 1163 const struct efivar_operations *ops, 1164 struct kobject *kobject); 1165 int efivars_unregister(struct efivars *efivars); 1166 struct kobject *efivars_kobject(void); 1167 1168 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1169 void *data, bool atomic, bool duplicates, 1170 struct list_head *head); 1171 1172 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1173 void efivar_entry_remove(struct efivar_entry *entry); 1174 1175 int __efivar_entry_delete(struct efivar_entry *entry); 1176 int efivar_entry_delete(struct efivar_entry *entry); 1177 1178 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1179 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1180 unsigned long *size, void *data); 1181 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1182 unsigned long *size, void *data); 1183 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1184 unsigned long size, void *data, struct list_head *head); 1185 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1186 unsigned long *size, void *data, bool *set); 1187 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1188 bool block, unsigned long size, void *data); 1189 1190 void efivar_entry_iter_begin(void); 1191 void efivar_entry_iter_end(void); 1192 1193 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1194 struct list_head *head, void *data, 1195 struct efivar_entry **prev); 1196 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1197 struct list_head *head, void *data); 1198 1199 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1200 struct list_head *head, bool remove); 1201 1202 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len); 1203 1204 extern struct work_struct efivar_work; 1205 void efivar_run_worker(void); 1206 1207 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1208 int efivars_sysfs_init(void); 1209 1210 #define EFIVARS_DATA_SIZE_MAX 1024 1211 1212 #endif /* CONFIG_EFI_VARS */ 1213 1214 #ifdef CONFIG_EFI_RUNTIME_MAP 1215 int efi_runtime_map_init(struct kobject *); 1216 void efi_runtime_map_setup(void *, int, u32); 1217 int efi_get_runtime_map_size(void); 1218 int efi_get_runtime_map_desc_size(void); 1219 int efi_runtime_map_copy(void *buf, size_t bufsz); 1220 #else 1221 static inline int efi_runtime_map_init(struct kobject *kobj) 1222 { 1223 return 0; 1224 } 1225 1226 static inline void 1227 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1228 1229 static inline int efi_get_runtime_map_size(void) 1230 { 1231 return 0; 1232 } 1233 1234 static inline int efi_get_runtime_map_desc_size(void) 1235 { 1236 return 0; 1237 } 1238 1239 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1240 { 1241 return 0; 1242 } 1243 1244 #endif 1245 1246 /* prototypes shared between arch specific and generic stub code */ 1247 1248 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1249 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1250 1251 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1252 1253 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1254 unsigned long addr); 1255 1256 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1257 efi_loaded_image_t *image, int *cmd_line_len); 1258 1259 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1260 efi_memory_desc_t **map, 1261 unsigned long *map_size, 1262 unsigned long *desc_size, 1263 u32 *desc_ver, 1264 unsigned long *key_ptr); 1265 1266 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1267 unsigned long size, unsigned long align, 1268 unsigned long *addr); 1269 1270 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1271 unsigned long size, unsigned long align, 1272 unsigned long *addr, unsigned long max); 1273 1274 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1275 unsigned long *image_addr, 1276 unsigned long image_size, 1277 unsigned long alloc_size, 1278 unsigned long preferred_addr, 1279 unsigned long alignment); 1280 1281 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1282 efi_loaded_image_t *image, 1283 char *cmd_line, char *option_string, 1284 unsigned long max_addr, 1285 unsigned long *load_addr, 1286 unsigned long *load_size); 1287 1288 efi_status_t efi_parse_options(char *cmdline); 1289 1290 bool efi_runtime_disabled(void); 1291 #endif /* _LINUX_EFI_H */ 1292