1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_EFI_H 3 #define _LINUX_EFI_H 4 5 /* 6 * Extensible Firmware Interface 7 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999 8 * 9 * Copyright (C) 1999 VA Linux Systems 10 * Copyright (C) 1999 Walt Drummond <[email protected]> 11 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. 12 * David Mosberger-Tang <[email protected]> 13 * Stephane Eranian <[email protected]> 14 */ 15 #include <linux/init.h> 16 #include <linux/string.h> 17 #include <linux/time.h> 18 #include <linux/types.h> 19 #include <linux/proc_fs.h> 20 #include <linux/rtc.h> 21 #include <linux/ioport.h> 22 #include <linux/pfn.h> 23 #include <linux/pstore.h> 24 #include <linux/range.h> 25 #include <linux/reboot.h> 26 #include <linux/uuid.h> 27 #include <linux/screen_info.h> 28 29 #include <asm/page.h> 30 31 #define EFI_SUCCESS 0 32 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 39 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 40 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 41 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 42 #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) 43 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 44 45 typedef unsigned long efi_status_t; 46 typedef u8 efi_bool_t; 47 typedef u16 efi_char16_t; /* UNICODE character */ 48 typedef u64 efi_physical_addr_t; 49 typedef void *efi_handle_t; 50 51 typedef guid_t efi_guid_t; 52 53 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 54 GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) 55 56 /* 57 * Generic EFI table header 58 */ 59 typedef struct { 60 u64 signature; 61 u32 revision; 62 u32 headersize; 63 u32 crc32; 64 u32 reserved; 65 } efi_table_hdr_t; 66 67 /* 68 * Memory map descriptor: 69 */ 70 71 /* Memory types: */ 72 #define EFI_RESERVED_TYPE 0 73 #define EFI_LOADER_CODE 1 74 #define EFI_LOADER_DATA 2 75 #define EFI_BOOT_SERVICES_CODE 3 76 #define EFI_BOOT_SERVICES_DATA 4 77 #define EFI_RUNTIME_SERVICES_CODE 5 78 #define EFI_RUNTIME_SERVICES_DATA 6 79 #define EFI_CONVENTIONAL_MEMORY 7 80 #define EFI_UNUSABLE_MEMORY 8 81 #define EFI_ACPI_RECLAIM_MEMORY 9 82 #define EFI_ACPI_MEMORY_NVS 10 83 #define EFI_MEMORY_MAPPED_IO 11 84 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 85 #define EFI_PAL_CODE 13 86 #define EFI_PERSISTENT_MEMORY 14 87 #define EFI_MAX_MEMORY_TYPE 15 88 89 /* Attribute values: */ 90 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 91 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 92 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 93 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 94 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 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_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 99 #define EFI_MEMORY_MORE_RELIABLE \ 100 ((u64)0x0000000000010000ULL) /* higher reliability */ 101 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 102 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 103 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 104 105 #define EFI_PAGE_SHIFT 12 106 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 107 #define EFI_PAGES_MAX (U64_MAX >> 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 struct efi_boot_memmap { 126 efi_memory_desc_t **map; 127 unsigned long *map_size; 128 unsigned long *desc_size; 129 u32 *desc_ver; 130 unsigned long *key_ptr; 131 unsigned long *buff_size; 132 }; 133 134 /* 135 * EFI capsule flags 136 */ 137 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 138 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 139 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 140 141 struct capsule_info { 142 efi_capsule_header_t header; 143 efi_capsule_header_t *capsule; 144 int reset_type; 145 long index; 146 size_t count; 147 size_t total_size; 148 struct page **pages; 149 phys_addr_t *phys; 150 size_t page_bytes_remain; 151 }; 152 153 int __efi_capsule_setup_info(struct capsule_info *cap_info); 154 155 /* 156 * Allocation types for calls to boottime->allocate_pages. 157 */ 158 #define EFI_ALLOCATE_ANY_PAGES 0 159 #define EFI_ALLOCATE_MAX_ADDRESS 1 160 #define EFI_ALLOCATE_ADDRESS 2 161 #define EFI_MAX_ALLOCATE_TYPE 3 162 163 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 164 165 /* 166 * Types and defines for Time Services 167 */ 168 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 169 #define EFI_TIME_IN_DAYLIGHT 0x2 170 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 171 172 typedef struct { 173 u16 year; 174 u8 month; 175 u8 day; 176 u8 hour; 177 u8 minute; 178 u8 second; 179 u8 pad1; 180 u32 nanosecond; 181 s16 timezone; 182 u8 daylight; 183 u8 pad2; 184 } efi_time_t; 185 186 typedef struct { 187 u32 resolution; 188 u32 accuracy; 189 u8 sets_to_zero; 190 } efi_time_cap_t; 191 192 typedef struct { 193 efi_table_hdr_t hdr; 194 u32 raise_tpl; 195 u32 restore_tpl; 196 u32 allocate_pages; 197 u32 free_pages; 198 u32 get_memory_map; 199 u32 allocate_pool; 200 u32 free_pool; 201 u32 create_event; 202 u32 set_timer; 203 u32 wait_for_event; 204 u32 signal_event; 205 u32 close_event; 206 u32 check_event; 207 u32 install_protocol_interface; 208 u32 reinstall_protocol_interface; 209 u32 uninstall_protocol_interface; 210 u32 handle_protocol; 211 u32 __reserved; 212 u32 register_protocol_notify; 213 u32 locate_handle; 214 u32 locate_device_path; 215 u32 install_configuration_table; 216 u32 load_image; 217 u32 start_image; 218 u32 exit; 219 u32 unload_image; 220 u32 exit_boot_services; 221 u32 get_next_monotonic_count; 222 u32 stall; 223 u32 set_watchdog_timer; 224 u32 connect_controller; 225 u32 disconnect_controller; 226 u32 open_protocol; 227 u32 close_protocol; 228 u32 open_protocol_information; 229 u32 protocols_per_handle; 230 u32 locate_handle_buffer; 231 u32 locate_protocol; 232 u32 install_multiple_protocol_interfaces; 233 u32 uninstall_multiple_protocol_interfaces; 234 u32 calculate_crc32; 235 u32 copy_mem; 236 u32 set_mem; 237 u32 create_event_ex; 238 } __packed efi_boot_services_32_t; 239 240 typedef struct { 241 efi_table_hdr_t hdr; 242 u64 raise_tpl; 243 u64 restore_tpl; 244 u64 allocate_pages; 245 u64 free_pages; 246 u64 get_memory_map; 247 u64 allocate_pool; 248 u64 free_pool; 249 u64 create_event; 250 u64 set_timer; 251 u64 wait_for_event; 252 u64 signal_event; 253 u64 close_event; 254 u64 check_event; 255 u64 install_protocol_interface; 256 u64 reinstall_protocol_interface; 257 u64 uninstall_protocol_interface; 258 u64 handle_protocol; 259 u64 __reserved; 260 u64 register_protocol_notify; 261 u64 locate_handle; 262 u64 locate_device_path; 263 u64 install_configuration_table; 264 u64 load_image; 265 u64 start_image; 266 u64 exit; 267 u64 unload_image; 268 u64 exit_boot_services; 269 u64 get_next_monotonic_count; 270 u64 stall; 271 u64 set_watchdog_timer; 272 u64 connect_controller; 273 u64 disconnect_controller; 274 u64 open_protocol; 275 u64 close_protocol; 276 u64 open_protocol_information; 277 u64 protocols_per_handle; 278 u64 locate_handle_buffer; 279 u64 locate_protocol; 280 u64 install_multiple_protocol_interfaces; 281 u64 uninstall_multiple_protocol_interfaces; 282 u64 calculate_crc32; 283 u64 copy_mem; 284 u64 set_mem; 285 u64 create_event_ex; 286 } __packed efi_boot_services_64_t; 287 288 /* 289 * EFI Boot Services table 290 */ 291 typedef struct { 292 efi_table_hdr_t hdr; 293 void *raise_tpl; 294 void *restore_tpl; 295 efi_status_t (*allocate_pages)(int, int, unsigned long, 296 efi_physical_addr_t *); 297 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 298 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 299 unsigned long *, u32 *); 300 efi_status_t (*allocate_pool)(int, unsigned long, void **); 301 efi_status_t (*free_pool)(void *); 302 void *create_event; 303 void *set_timer; 304 void *wait_for_event; 305 void *signal_event; 306 void *close_event; 307 void *check_event; 308 void *install_protocol_interface; 309 void *reinstall_protocol_interface; 310 void *uninstall_protocol_interface; 311 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 312 void *__reserved; 313 void *register_protocol_notify; 314 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 315 unsigned long *, efi_handle_t *); 316 void *locate_device_path; 317 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 318 void *load_image; 319 void *start_image; 320 void *exit; 321 void *unload_image; 322 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 323 void *get_next_monotonic_count; 324 void *stall; 325 void *set_watchdog_timer; 326 void *connect_controller; 327 void *disconnect_controller; 328 void *open_protocol; 329 void *close_protocol; 330 void *open_protocol_information; 331 void *protocols_per_handle; 332 void *locate_handle_buffer; 333 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 334 void *install_multiple_protocol_interfaces; 335 void *uninstall_multiple_protocol_interfaces; 336 void *calculate_crc32; 337 void *copy_mem; 338 void *set_mem; 339 void *create_event_ex; 340 } efi_boot_services_t; 341 342 typedef enum { 343 EfiPciIoWidthUint8, 344 EfiPciIoWidthUint16, 345 EfiPciIoWidthUint32, 346 EfiPciIoWidthUint64, 347 EfiPciIoWidthFifoUint8, 348 EfiPciIoWidthFifoUint16, 349 EfiPciIoWidthFifoUint32, 350 EfiPciIoWidthFifoUint64, 351 EfiPciIoWidthFillUint8, 352 EfiPciIoWidthFillUint16, 353 EfiPciIoWidthFillUint32, 354 EfiPciIoWidthFillUint64, 355 EfiPciIoWidthMaximum 356 } EFI_PCI_IO_PROTOCOL_WIDTH; 357 358 typedef enum { 359 EfiPciIoAttributeOperationGet, 360 EfiPciIoAttributeOperationSet, 361 EfiPciIoAttributeOperationEnable, 362 EfiPciIoAttributeOperationDisable, 363 EfiPciIoAttributeOperationSupported, 364 EfiPciIoAttributeOperationMaximum 365 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 366 367 typedef struct { 368 u32 read; 369 u32 write; 370 } efi_pci_io_protocol_access_32_t; 371 372 typedef struct { 373 u64 read; 374 u64 write; 375 } efi_pci_io_protocol_access_64_t; 376 377 typedef struct { 378 void *read; 379 void *write; 380 } efi_pci_io_protocol_access_t; 381 382 typedef struct { 383 u32 poll_mem; 384 u32 poll_io; 385 efi_pci_io_protocol_access_32_t mem; 386 efi_pci_io_protocol_access_32_t io; 387 efi_pci_io_protocol_access_32_t pci; 388 u32 copy_mem; 389 u32 map; 390 u32 unmap; 391 u32 allocate_buffer; 392 u32 free_buffer; 393 u32 flush; 394 u32 get_location; 395 u32 attributes; 396 u32 get_bar_attributes; 397 u32 set_bar_attributes; 398 u64 romsize; 399 u32 romimage; 400 } efi_pci_io_protocol_32_t; 401 402 typedef struct { 403 u64 poll_mem; 404 u64 poll_io; 405 efi_pci_io_protocol_access_64_t mem; 406 efi_pci_io_protocol_access_64_t io; 407 efi_pci_io_protocol_access_64_t pci; 408 u64 copy_mem; 409 u64 map; 410 u64 unmap; 411 u64 allocate_buffer; 412 u64 free_buffer; 413 u64 flush; 414 u64 get_location; 415 u64 attributes; 416 u64 get_bar_attributes; 417 u64 set_bar_attributes; 418 u64 romsize; 419 u64 romimage; 420 } efi_pci_io_protocol_64_t; 421 422 typedef struct { 423 void *poll_mem; 424 void *poll_io; 425 efi_pci_io_protocol_access_t mem; 426 efi_pci_io_protocol_access_t io; 427 efi_pci_io_protocol_access_t pci; 428 void *copy_mem; 429 void *map; 430 void *unmap; 431 void *allocate_buffer; 432 void *free_buffer; 433 void *flush; 434 void *get_location; 435 void *attributes; 436 void *get_bar_attributes; 437 void *set_bar_attributes; 438 uint64_t romsize; 439 void *romimage; 440 } efi_pci_io_protocol_t; 441 442 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 443 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 444 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 445 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 446 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 447 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 448 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 449 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 450 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 451 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 452 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 453 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 454 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 455 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 456 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 457 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 458 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 459 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 460 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 461 462 typedef struct { 463 u32 version; 464 u32 get; 465 u32 set; 466 u32 del; 467 u32 get_all; 468 } apple_properties_protocol_32_t; 469 470 typedef struct { 471 u64 version; 472 u64 get; 473 u64 set; 474 u64 del; 475 u64 get_all; 476 } apple_properties_protocol_64_t; 477 478 typedef struct { 479 u32 get_capability; 480 u32 get_event_log; 481 u32 hash_log_extend_event; 482 u32 submit_command; 483 u32 get_active_pcr_banks; 484 u32 set_active_pcr_banks; 485 u32 get_result_of_set_active_pcr_banks; 486 } efi_tcg2_protocol_32_t; 487 488 typedef struct { 489 u64 get_capability; 490 u64 get_event_log; 491 u64 hash_log_extend_event; 492 u64 submit_command; 493 u64 get_active_pcr_banks; 494 u64 set_active_pcr_banks; 495 u64 get_result_of_set_active_pcr_banks; 496 } efi_tcg2_protocol_64_t; 497 498 typedef u32 efi_tcg2_event_log_format; 499 500 typedef struct { 501 void *get_capability; 502 efi_status_t (*get_event_log)(efi_handle_t, efi_tcg2_event_log_format, 503 efi_physical_addr_t *, efi_physical_addr_t *, efi_bool_t *); 504 void *hash_log_extend_event; 505 void *submit_command; 506 void *get_active_pcr_banks; 507 void *set_active_pcr_banks; 508 void *get_result_of_set_active_pcr_banks; 509 } efi_tcg2_protocol_t; 510 511 /* 512 * Types and defines for EFI ResetSystem 513 */ 514 #define EFI_RESET_COLD 0 515 #define EFI_RESET_WARM 1 516 #define EFI_RESET_SHUTDOWN 2 517 518 /* 519 * EFI Runtime Services table 520 */ 521 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 522 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 523 524 typedef struct { 525 efi_table_hdr_t hdr; 526 u32 get_time; 527 u32 set_time; 528 u32 get_wakeup_time; 529 u32 set_wakeup_time; 530 u32 set_virtual_address_map; 531 u32 convert_pointer; 532 u32 get_variable; 533 u32 get_next_variable; 534 u32 set_variable; 535 u32 get_next_high_mono_count; 536 u32 reset_system; 537 u32 update_capsule; 538 u32 query_capsule_caps; 539 u32 query_variable_info; 540 } efi_runtime_services_32_t; 541 542 typedef struct { 543 efi_table_hdr_t hdr; 544 u64 get_time; 545 u64 set_time; 546 u64 get_wakeup_time; 547 u64 set_wakeup_time; 548 u64 set_virtual_address_map; 549 u64 convert_pointer; 550 u64 get_variable; 551 u64 get_next_variable; 552 u64 set_variable; 553 u64 get_next_high_mono_count; 554 u64 reset_system; 555 u64 update_capsule; 556 u64 query_capsule_caps; 557 u64 query_variable_info; 558 } efi_runtime_services_64_t; 559 560 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 561 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 562 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 563 efi_time_t *tm); 564 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 565 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 566 unsigned long *data_size, void *data); 567 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 568 efi_guid_t *vendor); 569 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 570 u32 attr, unsigned long data_size, 571 void *data); 572 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 573 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 574 unsigned long data_size, efi_char16_t *data); 575 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 576 unsigned long descriptor_size, 577 u32 descriptor_version, 578 efi_memory_desc_t *virtual_map); 579 typedef efi_status_t efi_query_variable_info_t(u32 attr, 580 u64 *storage_space, 581 u64 *remaining_space, 582 u64 *max_variable_size); 583 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 584 unsigned long count, 585 unsigned long sg_list); 586 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 587 unsigned long count, 588 u64 *max_size, 589 int *reset_type); 590 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 591 unsigned long size, 592 bool nonblocking); 593 594 typedef struct { 595 efi_table_hdr_t hdr; 596 efi_get_time_t *get_time; 597 efi_set_time_t *set_time; 598 efi_get_wakeup_time_t *get_wakeup_time; 599 efi_set_wakeup_time_t *set_wakeup_time; 600 efi_set_virtual_address_map_t *set_virtual_address_map; 601 void *convert_pointer; 602 efi_get_variable_t *get_variable; 603 efi_get_next_variable_t *get_next_variable; 604 efi_set_variable_t *set_variable; 605 efi_get_next_high_mono_count_t *get_next_high_mono_count; 606 efi_reset_system_t *reset_system; 607 efi_update_capsule_t *update_capsule; 608 efi_query_capsule_caps_t *query_capsule_caps; 609 efi_query_variable_info_t *query_variable_info; 610 } efi_runtime_services_t; 611 612 void efi_native_runtime_setup(void); 613 614 /* 615 * EFI Configuration Table and GUID definitions 616 * 617 * These are all defined in a single line to make them easier to 618 * grep for and to see them at a glance - while still having a 619 * similar structure to the definitions in the spec. 620 * 621 * Here's how they are structured: 622 * 623 * GUID: 12345678-1234-1234-1234-123456789012 624 * Spec: 625 * #define EFI_SOME_PROTOCOL_GUID \ 626 * {0x12345678,0x1234,0x1234,\ 627 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} 628 * Here: 629 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) 630 * ^ tabs ^extra space 631 * 632 * Note that the 'extra space' separates the values at the same place 633 * where the UEFI SPEC breaks the line. 634 */ 635 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 636 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 637 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 638 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 639 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 640 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 641 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 642 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 643 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 644 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 645 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 646 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 647 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 648 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 649 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 650 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 651 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 652 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 653 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 654 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 655 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 656 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 657 #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61) 658 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 659 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 660 #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) 661 #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) 662 663 #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f) 664 #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23) 665 666 #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) 667 #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) 668 #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) 669 670 /* 671 * This GUID is used to pass to the kernel proper the struct screen_info 672 * structure that was populated by the stub based on the GOP protocol instance 673 * associated with ConOut 674 */ 675 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 676 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 677 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b) 678 #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa) 679 #define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2) 680 681 typedef struct { 682 efi_guid_t guid; 683 u64 table; 684 } efi_config_table_64_t; 685 686 typedef struct { 687 efi_guid_t guid; 688 u32 table; 689 } efi_config_table_32_t; 690 691 typedef struct { 692 efi_guid_t guid; 693 unsigned long table; 694 } efi_config_table_t; 695 696 typedef struct { 697 efi_guid_t guid; 698 const char *name; 699 unsigned long *ptr; 700 } efi_config_table_type_t; 701 702 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 703 704 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 705 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 706 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 707 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 708 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 709 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 710 711 typedef struct { 712 efi_table_hdr_t hdr; 713 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 714 u32 fw_revision; 715 u32 __pad1; 716 u64 con_in_handle; 717 u64 con_in; 718 u64 con_out_handle; 719 u64 con_out; 720 u64 stderr_handle; 721 u64 stderr; 722 u64 runtime; 723 u64 boottime; 724 u32 nr_tables; 725 u32 __pad2; 726 u64 tables; 727 } efi_system_table_64_t; 728 729 typedef struct { 730 efi_table_hdr_t hdr; 731 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 732 u32 fw_revision; 733 u32 con_in_handle; 734 u32 con_in; 735 u32 con_out_handle; 736 u32 con_out; 737 u32 stderr_handle; 738 u32 stderr; 739 u32 runtime; 740 u32 boottime; 741 u32 nr_tables; 742 u32 tables; 743 } efi_system_table_32_t; 744 745 typedef struct { 746 efi_table_hdr_t hdr; 747 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 748 u32 fw_revision; 749 unsigned long con_in_handle; 750 unsigned long con_in; 751 unsigned long con_out_handle; 752 unsigned long con_out; 753 unsigned long stderr_handle; 754 unsigned long stderr; 755 efi_runtime_services_t *runtime; 756 efi_boot_services_t *boottime; 757 unsigned long nr_tables; 758 unsigned long tables; 759 } efi_system_table_t; 760 761 /* 762 * Architecture independent structure for describing a memory map for the 763 * benefit of efi_memmap_init_early(), saving us the need to pass four 764 * parameters. 765 */ 766 struct efi_memory_map_data { 767 phys_addr_t phys_map; 768 unsigned long size; 769 unsigned long desc_version; 770 unsigned long desc_size; 771 }; 772 773 struct efi_memory_map { 774 phys_addr_t phys_map; 775 void *map; 776 void *map_end; 777 int nr_map; 778 unsigned long desc_version; 779 unsigned long desc_size; 780 bool late; 781 }; 782 783 struct efi_mem_range { 784 struct range range; 785 u64 attribute; 786 }; 787 788 struct efi_fdt_params { 789 u64 system_table; 790 u64 mmap; 791 u32 mmap_size; 792 u32 desc_size; 793 u32 desc_ver; 794 }; 795 796 typedef struct { 797 u32 revision; 798 u32 parent_handle; 799 u32 system_table; 800 u32 device_handle; 801 u32 file_path; 802 u32 reserved; 803 u32 load_options_size; 804 u32 load_options; 805 u32 image_base; 806 __aligned_u64 image_size; 807 unsigned int image_code_type; 808 unsigned int image_data_type; 809 unsigned long unload; 810 } efi_loaded_image_32_t; 811 812 typedef struct { 813 u32 revision; 814 u64 parent_handle; 815 u64 system_table; 816 u64 device_handle; 817 u64 file_path; 818 u64 reserved; 819 u32 load_options_size; 820 u64 load_options; 821 u64 image_base; 822 __aligned_u64 image_size; 823 unsigned int image_code_type; 824 unsigned int image_data_type; 825 unsigned long unload; 826 } efi_loaded_image_64_t; 827 828 typedef struct { 829 u32 revision; 830 void *parent_handle; 831 efi_system_table_t *system_table; 832 void *device_handle; 833 void *file_path; 834 void *reserved; 835 u32 load_options_size; 836 void *load_options; 837 void *image_base; 838 __aligned_u64 image_size; 839 unsigned int image_code_type; 840 unsigned int image_data_type; 841 unsigned long unload; 842 } efi_loaded_image_t; 843 844 845 typedef struct { 846 u64 size; 847 u64 file_size; 848 u64 phys_size; 849 efi_time_t create_time; 850 efi_time_t last_access_time; 851 efi_time_t modification_time; 852 __aligned_u64 attribute; 853 efi_char16_t filename[1]; 854 } efi_file_info_t; 855 856 typedef struct { 857 u64 revision; 858 u32 open; 859 u32 close; 860 u32 delete; 861 u32 read; 862 u32 write; 863 u32 get_position; 864 u32 set_position; 865 u32 get_info; 866 u32 set_info; 867 u32 flush; 868 } efi_file_handle_32_t; 869 870 typedef struct { 871 u64 revision; 872 u64 open; 873 u64 close; 874 u64 delete; 875 u64 read; 876 u64 write; 877 u64 get_position; 878 u64 set_position; 879 u64 get_info; 880 u64 set_info; 881 u64 flush; 882 } efi_file_handle_64_t; 883 884 typedef struct _efi_file_handle { 885 u64 revision; 886 efi_status_t (*open)(struct _efi_file_handle *, 887 struct _efi_file_handle **, 888 efi_char16_t *, u64, u64); 889 efi_status_t (*close)(struct _efi_file_handle *); 890 void *delete; 891 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 892 void *); 893 void *write; 894 void *get_position; 895 void *set_position; 896 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 897 unsigned long *, void *); 898 void *set_info; 899 void *flush; 900 } efi_file_handle_t; 901 902 typedef struct { 903 u64 revision; 904 u32 open_volume; 905 } efi_file_io_interface_32_t; 906 907 typedef struct { 908 u64 revision; 909 u64 open_volume; 910 } efi_file_io_interface_64_t; 911 912 typedef struct _efi_file_io_interface { 913 u64 revision; 914 int (*open_volume)(struct _efi_file_io_interface *, 915 efi_file_handle_t **); 916 } efi_file_io_interface_t; 917 918 #define EFI_FILE_MODE_READ 0x0000000000000001 919 #define EFI_FILE_MODE_WRITE 0x0000000000000002 920 #define EFI_FILE_MODE_CREATE 0x8000000000000000 921 922 typedef struct { 923 u32 version; 924 u32 length; 925 u64 memory_protection_attribute; 926 } efi_properties_table_t; 927 928 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 929 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 930 931 #define EFI_INVALID_TABLE_ADDR (~0UL) 932 933 typedef struct { 934 u32 version; 935 u32 num_entries; 936 u32 desc_size; 937 u32 reserved; 938 efi_memory_desc_t entry[0]; 939 } efi_memory_attributes_table_t; 940 941 typedef struct { 942 efi_guid_t signature_owner; 943 u8 signature_data[]; 944 } efi_signature_data_t; 945 946 typedef struct { 947 efi_guid_t signature_type; 948 u32 signature_list_size; 949 u32 signature_header_size; 950 u32 signature_size; 951 u8 signature_header[]; 952 /* efi_signature_data_t signatures[][] */ 953 } efi_signature_list_t; 954 955 typedef u8 efi_sha256_hash_t[32]; 956 957 typedef struct { 958 efi_sha256_hash_t to_be_signed_hash; 959 efi_time_t time_of_revocation; 960 } efi_cert_x509_sha256_t; 961 962 /* 963 * All runtime access to EFI goes through this structure: 964 */ 965 extern struct efi { 966 efi_system_table_t *systab; /* EFI system table */ 967 unsigned int runtime_version; /* Runtime services version */ 968 unsigned long mps; /* MPS table */ 969 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 970 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 971 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 972 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 973 unsigned long sal_systab; /* SAL system table */ 974 unsigned long boot_info; /* boot info table */ 975 unsigned long hcdp; /* HCDP table */ 976 unsigned long uga; /* UGA table */ 977 unsigned long uv_systab; /* UV system table */ 978 unsigned long fw_vendor; /* fw_vendor */ 979 unsigned long runtime; /* runtime table */ 980 unsigned long config_table; /* config tables */ 981 unsigned long esrt; /* ESRT table */ 982 unsigned long properties_table; /* properties table */ 983 unsigned long mem_attr_table; /* memory attributes table */ 984 unsigned long rng_seed; /* UEFI firmware random seed */ 985 unsigned long tpm_log; /* TPM2 Event Log table */ 986 unsigned long mem_reserve; /* Linux EFI memreserve table */ 987 efi_get_time_t *get_time; 988 efi_set_time_t *set_time; 989 efi_get_wakeup_time_t *get_wakeup_time; 990 efi_set_wakeup_time_t *set_wakeup_time; 991 efi_get_variable_t *get_variable; 992 efi_get_next_variable_t *get_next_variable; 993 efi_set_variable_t *set_variable; 994 efi_set_variable_t *set_variable_nonblocking; 995 efi_query_variable_info_t *query_variable_info; 996 efi_query_variable_info_t *query_variable_info_nonblocking; 997 efi_update_capsule_t *update_capsule; 998 efi_query_capsule_caps_t *query_capsule_caps; 999 efi_get_next_high_mono_count_t *get_next_high_mono_count; 1000 efi_reset_system_t *reset_system; 1001 efi_set_virtual_address_map_t *set_virtual_address_map; 1002 struct efi_memory_map memmap; 1003 unsigned long flags; 1004 } efi; 1005 1006 extern struct mm_struct efi_mm; 1007 1008 static inline int 1009 efi_guidcmp (efi_guid_t left, efi_guid_t right) 1010 { 1011 return memcmp(&left, &right, sizeof (efi_guid_t)); 1012 } 1013 1014 static inline char * 1015 efi_guid_to_str(efi_guid_t *guid, char *out) 1016 { 1017 sprintf(out, "%pUl", guid->b); 1018 return out; 1019 } 1020 1021 extern void efi_init (void); 1022 extern void *efi_get_pal_addr (void); 1023 extern void efi_map_pal_code (void); 1024 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 1025 extern void efi_gettimeofday (struct timespec64 *ts); 1026 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 1027 #ifdef CONFIG_X86 1028 extern efi_status_t efi_query_variable_store(u32 attributes, 1029 unsigned long size, 1030 bool nonblocking); 1031 extern void efi_find_mirror(void); 1032 #else 1033 1034 static inline efi_status_t efi_query_variable_store(u32 attributes, 1035 unsigned long size, 1036 bool nonblocking) 1037 { 1038 return EFI_SUCCESS; 1039 } 1040 #endif 1041 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 1042 1043 extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries); 1044 extern int __init efi_memmap_init_early(struct efi_memory_map_data *data); 1045 extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size); 1046 extern void __init efi_memmap_unmap(void); 1047 extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map); 1048 extern int __init efi_memmap_split_count(efi_memory_desc_t *md, 1049 struct range *range); 1050 extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, 1051 void *buf, struct efi_mem_range *mem); 1052 1053 extern int efi_config_init(efi_config_table_type_t *arch_tables); 1054 #ifdef CONFIG_EFI_ESRT 1055 extern void __init efi_esrt_init(void); 1056 #else 1057 static inline void efi_esrt_init(void) { } 1058 #endif 1059 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 1060 efi_config_table_type_t *arch_tables); 1061 extern u64 efi_get_iobase (void); 1062 extern int efi_mem_type(unsigned long phys_addr); 1063 extern u64 efi_mem_attributes (unsigned long phys_addr); 1064 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 1065 extern int __init efi_uart_console_only (void); 1066 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 1067 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 1068 extern void efi_mem_reserve(phys_addr_t addr, u64 size); 1069 extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size); 1070 extern void efi_initialize_iomem_resources(struct resource *code_resource, 1071 struct resource *data_resource, struct resource *bss_resource); 1072 extern int efi_get_fdt_params(struct efi_fdt_params *params); 1073 extern struct kobject *efi_kobj; 1074 1075 extern int efi_reboot_quirk_mode; 1076 extern bool efi_poweroff_required(void); 1077 1078 #ifdef CONFIG_EFI_FAKE_MEMMAP 1079 extern void __init efi_fake_memmap(void); 1080 #else 1081 static inline void efi_fake_memmap(void) { } 1082 #endif 1083 1084 /* 1085 * efi_memattr_perm_setter - arch specific callback function passed into 1086 * efi_memattr_apply_permissions() that updates the 1087 * mapping permissions described by the second 1088 * argument in the page tables referred to by the 1089 * first argument. 1090 */ 1091 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 1092 1093 extern int efi_memattr_init(void); 1094 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 1095 efi_memattr_perm_setter fn); 1096 1097 /* 1098 * efi_early_memdesc_ptr - get the n-th EFI memmap descriptor 1099 * @map: the start of efi memmap 1100 * @desc_size: the size of space for each EFI memmap descriptor 1101 * @n: the index of efi memmap descriptor 1102 * 1103 * EFI boot service provides the GetMemoryMap() function to get a copy of the 1104 * current memory map which is an array of memory descriptors, each of 1105 * which describes a contiguous block of memory. It also gets the size of the 1106 * map, and the size of each descriptor, etc. 1107 * 1108 * Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of 1109 * each descriptor might not be equal to sizeof(efi_memory_memdesc_t), 1110 * since efi_memory_memdesc_t may be extended in the future. Thus the OS 1111 * MUST use the returned size of the descriptor to find the start of each 1112 * efi_memory_memdesc_t in the memory map array. This should only be used 1113 * during bootup since for_each_efi_memory_desc_xxx() is available after the 1114 * kernel initializes the EFI subsystem to set up struct efi_memory_map. 1115 */ 1116 #define efi_early_memdesc_ptr(map, desc_size, n) \ 1117 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size))) 1118 1119 /* Iterate through an efi_memory_map */ 1120 #define for_each_efi_memory_desc_in_map(m, md) \ 1121 for ((md) = (m)->map; \ 1122 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ 1123 (md) = (void *)(md) + (m)->desc_size) 1124 1125 /** 1126 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 1127 * @md: the efi_memory_desc_t * iterator 1128 * 1129 * Once the loop finishes @md must not be accessed. 1130 */ 1131 #define for_each_efi_memory_desc(md) \ 1132 for_each_efi_memory_desc_in_map(&efi.memmap, md) 1133 1134 /* 1135 * Format an EFI memory descriptor's type and attributes to a user-provided 1136 * character buffer, as per snprintf(), and return the buffer. 1137 */ 1138 char * __init efi_md_typeattr_format(char *buf, size_t size, 1139 const efi_memory_desc_t *md); 1140 1141 1142 typedef void (*efi_element_handler_t)(const char *source, 1143 const void *element_data, 1144 size_t element_size); 1145 extern int __init parse_efi_signature_list( 1146 const char *source, 1147 const void *data, size_t size, 1148 efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); 1149 1150 /** 1151 * efi_range_is_wc - check the WC bit on an address range 1152 * @start: starting kvirt address 1153 * @len: length of range 1154 * 1155 * Consult the EFI memory map and make sure it's ok to set this range WC. 1156 * Returns true or false. 1157 */ 1158 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 1159 { 1160 unsigned long i; 1161 1162 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 1163 unsigned long paddr = __pa(start + i); 1164 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 1165 return 0; 1166 } 1167 /* The range checked out */ 1168 return 1; 1169 } 1170 1171 #ifdef CONFIG_EFI_PCDP 1172 extern int __init efi_setup_pcdp_console(char *); 1173 #endif 1174 1175 /* 1176 * We play games with efi_enabled so that the compiler will, if 1177 * possible, remove EFI-related code altogether. 1178 */ 1179 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1180 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1181 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1182 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1183 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1184 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1185 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1186 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1187 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1188 #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ 1189 1190 #ifdef CONFIG_EFI 1191 /* 1192 * Test whether the above EFI_* bits are enabled. 1193 */ 1194 static inline bool efi_enabled(int feature) 1195 { 1196 return test_bit(feature, &efi.flags) != 0; 1197 } 1198 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1199 1200 extern bool efi_is_table_address(unsigned long phys_addr); 1201 1202 extern int efi_apply_persistent_mem_reservations(void); 1203 #else 1204 static inline bool efi_enabled(int feature) 1205 { 1206 return false; 1207 } 1208 static inline void 1209 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1210 1211 static inline bool 1212 efi_capsule_pending(int *reset_type) 1213 { 1214 return false; 1215 } 1216 1217 static inline bool efi_is_table_address(unsigned long phys_addr) 1218 { 1219 return false; 1220 } 1221 1222 static inline int efi_apply_persistent_mem_reservations(void) 1223 { 1224 return 0; 1225 } 1226 #endif 1227 1228 extern int efi_status_to_err(efi_status_t status); 1229 1230 /* 1231 * Variable Attributes 1232 */ 1233 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1234 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1235 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1236 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1237 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1238 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1239 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1240 1241 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1242 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1243 EFI_VARIABLE_RUNTIME_ACCESS | \ 1244 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1245 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1246 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1247 EFI_VARIABLE_APPEND_WRITE) 1248 /* 1249 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1250 * not including trailing NUL 1251 */ 1252 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN 1253 1254 /* 1255 * The type of search to perform when calling boottime->locate_handle 1256 */ 1257 #define EFI_LOCATE_ALL_HANDLES 0 1258 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1259 #define EFI_LOCATE_BY_PROTOCOL 2 1260 1261 /* 1262 * EFI Device Path information 1263 */ 1264 #define EFI_DEV_HW 0x01 1265 #define EFI_DEV_PCI 1 1266 #define EFI_DEV_PCCARD 2 1267 #define EFI_DEV_MEM_MAPPED 3 1268 #define EFI_DEV_VENDOR 4 1269 #define EFI_DEV_CONTROLLER 5 1270 #define EFI_DEV_ACPI 0x02 1271 #define EFI_DEV_BASIC_ACPI 1 1272 #define EFI_DEV_EXPANDED_ACPI 2 1273 #define EFI_DEV_MSG 0x03 1274 #define EFI_DEV_MSG_ATAPI 1 1275 #define EFI_DEV_MSG_SCSI 2 1276 #define EFI_DEV_MSG_FC 3 1277 #define EFI_DEV_MSG_1394 4 1278 #define EFI_DEV_MSG_USB 5 1279 #define EFI_DEV_MSG_USB_CLASS 15 1280 #define EFI_DEV_MSG_I20 6 1281 #define EFI_DEV_MSG_MAC 11 1282 #define EFI_DEV_MSG_IPV4 12 1283 #define EFI_DEV_MSG_IPV6 13 1284 #define EFI_DEV_MSG_INFINIBAND 9 1285 #define EFI_DEV_MSG_UART 14 1286 #define EFI_DEV_MSG_VENDOR 10 1287 #define EFI_DEV_MEDIA 0x04 1288 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1289 #define EFI_DEV_MEDIA_CDROM 2 1290 #define EFI_DEV_MEDIA_VENDOR 3 1291 #define EFI_DEV_MEDIA_FILE 4 1292 #define EFI_DEV_MEDIA_PROTOCOL 5 1293 #define EFI_DEV_BIOS_BOOT 0x05 1294 #define EFI_DEV_END_PATH 0x7F 1295 #define EFI_DEV_END_PATH2 0xFF 1296 #define EFI_DEV_END_INSTANCE 0x01 1297 #define EFI_DEV_END_ENTIRE 0xFF 1298 1299 struct efi_generic_dev_path { 1300 u8 type; 1301 u8 sub_type; 1302 u16 length; 1303 } __attribute ((packed)); 1304 1305 struct efi_dev_path { 1306 u8 type; /* can be replaced with unnamed */ 1307 u8 sub_type; /* struct efi_generic_dev_path; */ 1308 u16 length; /* once we've moved to -std=c11 */ 1309 union { 1310 struct { 1311 u32 hid; 1312 u32 uid; 1313 } acpi; 1314 struct { 1315 u8 fn; 1316 u8 dev; 1317 } pci; 1318 }; 1319 } __attribute ((packed)); 1320 1321 #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER) 1322 struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len); 1323 #endif 1324 1325 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1326 { 1327 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1328 *addr &= PAGE_MASK; 1329 } 1330 1331 /* 1332 * EFI Variable support. 1333 * 1334 * Different firmware drivers can expose their EFI-like variables using 1335 * the following. 1336 */ 1337 1338 struct efivar_operations { 1339 efi_get_variable_t *get_variable; 1340 efi_get_next_variable_t *get_next_variable; 1341 efi_set_variable_t *set_variable; 1342 efi_set_variable_t *set_variable_nonblocking; 1343 efi_query_variable_store_t *query_variable_store; 1344 }; 1345 1346 struct efivars { 1347 struct kset *kset; 1348 struct kobject *kobject; 1349 const struct efivar_operations *ops; 1350 }; 1351 1352 /* 1353 * The maximum size of VariableName + Data = 1024 1354 * Therefore, it's reasonable to save that much 1355 * space in each part of the structure, 1356 * and we use a page for reading/writing. 1357 */ 1358 1359 #define EFI_VAR_NAME_LEN 1024 1360 1361 struct efi_variable { 1362 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1363 efi_guid_t VendorGuid; 1364 unsigned long DataSize; 1365 __u8 Data[1024]; 1366 efi_status_t Status; 1367 __u32 Attributes; 1368 } __attribute__((packed)); 1369 1370 struct efivar_entry { 1371 struct efi_variable var; 1372 struct list_head list; 1373 struct kobject kobj; 1374 bool scanning; 1375 bool deleting; 1376 }; 1377 1378 typedef struct { 1379 u32 reset; 1380 u32 output_string; 1381 u32 test_string; 1382 } efi_simple_text_output_protocol_32_t; 1383 1384 typedef struct { 1385 u64 reset; 1386 u64 output_string; 1387 u64 test_string; 1388 } efi_simple_text_output_protocol_64_t; 1389 1390 struct efi_simple_text_output_protocol { 1391 void *reset; 1392 efi_status_t (*output_string)(void *, void *); 1393 void *test_string; 1394 }; 1395 1396 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1397 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1398 #define PIXEL_BIT_MASK 2 1399 #define PIXEL_BLT_ONLY 3 1400 #define PIXEL_FORMAT_MAX 4 1401 1402 struct efi_pixel_bitmask { 1403 u32 red_mask; 1404 u32 green_mask; 1405 u32 blue_mask; 1406 u32 reserved_mask; 1407 }; 1408 1409 struct efi_graphics_output_mode_info { 1410 u32 version; 1411 u32 horizontal_resolution; 1412 u32 vertical_resolution; 1413 int pixel_format; 1414 struct efi_pixel_bitmask pixel_information; 1415 u32 pixels_per_scan_line; 1416 } __packed; 1417 1418 struct efi_graphics_output_protocol_mode_32 { 1419 u32 max_mode; 1420 u32 mode; 1421 u32 info; 1422 u32 size_of_info; 1423 u64 frame_buffer_base; 1424 u32 frame_buffer_size; 1425 } __packed; 1426 1427 struct efi_graphics_output_protocol_mode_64 { 1428 u32 max_mode; 1429 u32 mode; 1430 u64 info; 1431 u64 size_of_info; 1432 u64 frame_buffer_base; 1433 u64 frame_buffer_size; 1434 } __packed; 1435 1436 struct efi_graphics_output_protocol_mode { 1437 u32 max_mode; 1438 u32 mode; 1439 unsigned long info; 1440 unsigned long size_of_info; 1441 u64 frame_buffer_base; 1442 unsigned long frame_buffer_size; 1443 } __packed; 1444 1445 struct efi_graphics_output_protocol_32 { 1446 u32 query_mode; 1447 u32 set_mode; 1448 u32 blt; 1449 u32 mode; 1450 }; 1451 1452 struct efi_graphics_output_protocol_64 { 1453 u64 query_mode; 1454 u64 set_mode; 1455 u64 blt; 1456 u64 mode; 1457 }; 1458 1459 struct efi_graphics_output_protocol { 1460 unsigned long query_mode; 1461 unsigned long set_mode; 1462 unsigned long blt; 1463 struct efi_graphics_output_protocol_mode *mode; 1464 }; 1465 1466 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1467 struct efi_graphics_output_protocol *, u32, unsigned long *, 1468 struct efi_graphics_output_mode_info **); 1469 1470 extern struct list_head efivar_sysfs_list; 1471 1472 static inline void 1473 efivar_unregister(struct efivar_entry *var) 1474 { 1475 kobject_put(&var->kobj); 1476 } 1477 1478 int efivars_register(struct efivars *efivars, 1479 const struct efivar_operations *ops, 1480 struct kobject *kobject); 1481 int efivars_unregister(struct efivars *efivars); 1482 struct kobject *efivars_kobject(void); 1483 1484 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1485 void *data, bool duplicates, struct list_head *head); 1486 1487 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1488 int efivar_entry_remove(struct efivar_entry *entry); 1489 1490 int __efivar_entry_delete(struct efivar_entry *entry); 1491 int efivar_entry_delete(struct efivar_entry *entry); 1492 1493 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1494 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1495 unsigned long *size, void *data); 1496 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1497 unsigned long *size, void *data); 1498 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1499 unsigned long size, void *data, struct list_head *head); 1500 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1501 unsigned long *size, void *data, bool *set); 1502 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1503 bool block, unsigned long size, void *data); 1504 1505 int efivar_entry_iter_begin(void); 1506 void efivar_entry_iter_end(void); 1507 1508 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1509 struct list_head *head, void *data, 1510 struct efivar_entry **prev); 1511 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1512 struct list_head *head, void *data); 1513 1514 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1515 struct list_head *head, bool remove); 1516 1517 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1518 unsigned long data_size); 1519 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1520 size_t len); 1521 1522 extern struct work_struct efivar_work; 1523 void efivar_run_worker(void); 1524 1525 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1526 int efivars_sysfs_init(void); 1527 1528 #define EFIVARS_DATA_SIZE_MAX 1024 1529 1530 #endif /* CONFIG_EFI_VARS */ 1531 extern bool efi_capsule_pending(int *reset_type); 1532 1533 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1534 size_t size, int *reset); 1535 1536 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1537 phys_addr_t *pages); 1538 1539 #ifdef CONFIG_EFI_RUNTIME_MAP 1540 int efi_runtime_map_init(struct kobject *); 1541 int efi_get_runtime_map_size(void); 1542 int efi_get_runtime_map_desc_size(void); 1543 int efi_runtime_map_copy(void *buf, size_t bufsz); 1544 #else 1545 static inline int efi_runtime_map_init(struct kobject *kobj) 1546 { 1547 return 0; 1548 } 1549 1550 static inline int efi_get_runtime_map_size(void) 1551 { 1552 return 0; 1553 } 1554 1555 static inline int efi_get_runtime_map_desc_size(void) 1556 { 1557 return 0; 1558 } 1559 1560 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1561 { 1562 return 0; 1563 } 1564 1565 #endif 1566 1567 /* prototypes shared between arch specific and generic stub code */ 1568 1569 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1570 1571 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1572 unsigned long addr); 1573 1574 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1575 efi_loaded_image_t *image, int *cmd_line_len); 1576 1577 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1578 struct efi_boot_memmap *map); 1579 1580 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1581 unsigned long size, unsigned long align, 1582 unsigned long *addr); 1583 1584 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1585 unsigned long size, unsigned long align, 1586 unsigned long *addr, unsigned long max); 1587 1588 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1589 unsigned long *image_addr, 1590 unsigned long image_size, 1591 unsigned long alloc_size, 1592 unsigned long preferred_addr, 1593 unsigned long alignment); 1594 1595 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1596 efi_loaded_image_t *image, 1597 char *cmd_line, char *option_string, 1598 unsigned long max_addr, 1599 unsigned long *load_addr, 1600 unsigned long *load_size); 1601 1602 efi_status_t efi_parse_options(char const *cmdline); 1603 1604 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1605 struct screen_info *si, efi_guid_t *proto, 1606 unsigned long size); 1607 1608 bool efi_runtime_disabled(void); 1609 extern void efi_call_virt_check_flags(unsigned long flags, const char *call); 1610 1611 enum efi_secureboot_mode { 1612 efi_secureboot_mode_unset, 1613 efi_secureboot_mode_unknown, 1614 efi_secureboot_mode_disabled, 1615 efi_secureboot_mode_enabled, 1616 }; 1617 enum efi_secureboot_mode efi_get_secureboot(efi_system_table_t *sys_table); 1618 1619 #ifdef CONFIG_RESET_ATTACK_MITIGATION 1620 void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg); 1621 #else 1622 static inline void 1623 efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { } 1624 #endif 1625 1626 void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table); 1627 1628 /* 1629 * Arch code can implement the following three template macros, avoiding 1630 * reptition for the void/non-void return cases of {__,}efi_call_virt(): 1631 * 1632 * * arch_efi_call_virt_setup() 1633 * 1634 * Sets up the environment for the call (e.g. switching page tables, 1635 * allowing kernel-mode use of floating point, if required). 1636 * 1637 * * arch_efi_call_virt() 1638 * 1639 * Performs the call. The last expression in the macro must be the call 1640 * itself, allowing the logic to be shared by the void and non-void 1641 * cases. 1642 * 1643 * * arch_efi_call_virt_teardown() 1644 * 1645 * Restores the usual kernel environment once the call has returned. 1646 */ 1647 1648 #define efi_call_virt_pointer(p, f, args...) \ 1649 ({ \ 1650 efi_status_t __s; \ 1651 unsigned long __flags; \ 1652 \ 1653 arch_efi_call_virt_setup(); \ 1654 \ 1655 local_save_flags(__flags); \ 1656 __s = arch_efi_call_virt(p, f, args); \ 1657 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1658 \ 1659 arch_efi_call_virt_teardown(); \ 1660 \ 1661 __s; \ 1662 }) 1663 1664 #define __efi_call_virt_pointer(p, f, args...) \ 1665 ({ \ 1666 unsigned long __flags; \ 1667 \ 1668 arch_efi_call_virt_setup(); \ 1669 \ 1670 local_save_flags(__flags); \ 1671 arch_efi_call_virt(p, f, args); \ 1672 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1673 \ 1674 arch_efi_call_virt_teardown(); \ 1675 }) 1676 1677 typedef efi_status_t (*efi_exit_boot_map_processing)( 1678 efi_system_table_t *sys_table_arg, 1679 struct efi_boot_memmap *map, 1680 void *priv); 1681 1682 efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, 1683 void *handle, 1684 struct efi_boot_memmap *map, 1685 void *priv, 1686 efi_exit_boot_map_processing priv_func); 1687 1688 #define EFI_RANDOM_SEED_SIZE 64U 1689 1690 struct linux_efi_random_seed { 1691 u32 size; 1692 u8 bits[]; 1693 }; 1694 1695 struct linux_efi_tpm_eventlog { 1696 u32 size; 1697 u8 version; 1698 u8 log[]; 1699 }; 1700 1701 extern int efi_tpm_eventlog_init(void); 1702 1703 /* 1704 * efi_runtime_service() function identifiers. 1705 * "NONE" is used by efi_recover_from_page_fault() to check if the page 1706 * fault happened while executing an efi runtime service. 1707 */ 1708 enum efi_rts_ids { 1709 NONE, 1710 GET_TIME, 1711 SET_TIME, 1712 GET_WAKEUP_TIME, 1713 SET_WAKEUP_TIME, 1714 GET_VARIABLE, 1715 GET_NEXT_VARIABLE, 1716 SET_VARIABLE, 1717 QUERY_VARIABLE_INFO, 1718 GET_NEXT_HIGH_MONO_COUNT, 1719 RESET_SYSTEM, 1720 UPDATE_CAPSULE, 1721 QUERY_CAPSULE_CAPS, 1722 }; 1723 1724 /* 1725 * efi_runtime_work: Details of EFI Runtime Service work 1726 * @arg<1-5>: EFI Runtime Service function arguments 1727 * @status: Status of executing EFI Runtime Service 1728 * @efi_rts_id: EFI Runtime Service function identifier 1729 * @efi_rts_comp: Struct used for handling completions 1730 */ 1731 struct efi_runtime_work { 1732 void *arg1; 1733 void *arg2; 1734 void *arg3; 1735 void *arg4; 1736 void *arg5; 1737 efi_status_t status; 1738 struct work_struct work; 1739 enum efi_rts_ids efi_rts_id; 1740 struct completion efi_rts_comp; 1741 }; 1742 1743 extern struct efi_runtime_work efi_rts_work; 1744 1745 /* Workqueue to queue EFI Runtime Services */ 1746 extern struct workqueue_struct *efi_rts_wq; 1747 1748 struct linux_efi_memreserve { 1749 int size; // allocated size of the array 1750 atomic_t count; // number of entries used 1751 phys_addr_t next; // pa of next struct instance 1752 struct { 1753 phys_addr_t base; 1754 phys_addr_t size; 1755 } entry[0]; 1756 }; 1757 1758 #define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \ 1759 (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0])) 1760 1761 #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ 1762 / sizeof(((struct linux_efi_memreserve *)0)->entry[0])) 1763 1764 #endif /* _LINUX_EFI_H */ 1765