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 /* 52 * The UEFI spec and EDK2 reference implementation both define EFI_GUID as 53 * struct { u32 a; u16; b; u16 c; u8 d[8]; }; and so the implied alignment 54 * is 32 bits not 8 bits like our guid_t. In some cases (i.e., on 32-bit ARM), 55 * this means that firmware services invoked by the kernel may assume that 56 * efi_guid_t* arguments are 32-bit aligned, and use memory accessors that 57 * do not tolerate misalignment. So let's set the minimum alignment to 32 bits. 58 * 59 * Note that the UEFI spec as well as some comments in the EDK2 code base 60 * suggest that EFI_GUID should be 64-bit aligned, but this appears to be 61 * a mistake, given that no code seems to exist that actually enforces that 62 * or relies on it. 63 */ 64 typedef guid_t efi_guid_t __aligned(__alignof__(u32)); 65 66 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 67 GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) 68 69 /* 70 * Generic EFI table header 71 */ 72 typedef struct { 73 u64 signature; 74 u32 revision; 75 u32 headersize; 76 u32 crc32; 77 u32 reserved; 78 } efi_table_hdr_t; 79 80 /* 81 * Memory map descriptor: 82 */ 83 84 /* Memory types: */ 85 #define EFI_RESERVED_TYPE 0 86 #define EFI_LOADER_CODE 1 87 #define EFI_LOADER_DATA 2 88 #define EFI_BOOT_SERVICES_CODE 3 89 #define EFI_BOOT_SERVICES_DATA 4 90 #define EFI_RUNTIME_SERVICES_CODE 5 91 #define EFI_RUNTIME_SERVICES_DATA 6 92 #define EFI_CONVENTIONAL_MEMORY 7 93 #define EFI_UNUSABLE_MEMORY 8 94 #define EFI_ACPI_RECLAIM_MEMORY 9 95 #define EFI_ACPI_MEMORY_NVS 10 96 #define EFI_MEMORY_MAPPED_IO 11 97 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 98 #define EFI_PAL_CODE 13 99 #define EFI_PERSISTENT_MEMORY 14 100 #define EFI_MAX_MEMORY_TYPE 15 101 102 /* Attribute values: */ 103 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 104 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 105 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 106 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 107 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 108 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 109 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 110 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 111 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 112 #define EFI_MEMORY_MORE_RELIABLE \ 113 ((u64)0x0000000000010000ULL) /* higher reliability */ 114 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 115 #define EFI_MEMORY_SP ((u64)0x0000000000040000ULL) /* soft reserved */ 116 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 117 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 118 119 #define EFI_PAGE_SHIFT 12 120 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 121 #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT) 122 123 typedef struct { 124 u32 type; 125 u32 pad; 126 u64 phys_addr; 127 u64 virt_addr; 128 u64 num_pages; 129 u64 attribute; 130 } efi_memory_desc_t; 131 132 typedef struct { 133 efi_guid_t guid; 134 u32 headersize; 135 u32 flags; 136 u32 imagesize; 137 } efi_capsule_header_t; 138 139 struct efi_boot_memmap { 140 efi_memory_desc_t **map; 141 unsigned long *map_size; 142 unsigned long *desc_size; 143 u32 *desc_ver; 144 unsigned long *key_ptr; 145 unsigned long *buff_size; 146 }; 147 148 /* 149 * EFI capsule flags 150 */ 151 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 152 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 153 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 154 155 struct capsule_info { 156 efi_capsule_header_t header; 157 efi_capsule_header_t *capsule; 158 int reset_type; 159 long index; 160 size_t count; 161 size_t total_size; 162 struct page **pages; 163 phys_addr_t *phys; 164 size_t page_bytes_remain; 165 }; 166 167 int __efi_capsule_setup_info(struct capsule_info *cap_info); 168 169 /* 170 * Allocation types for calls to boottime->allocate_pages. 171 */ 172 #define EFI_ALLOCATE_ANY_PAGES 0 173 #define EFI_ALLOCATE_MAX_ADDRESS 1 174 #define EFI_ALLOCATE_ADDRESS 2 175 #define EFI_MAX_ALLOCATE_TYPE 3 176 177 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 178 179 /* 180 * Types and defines for Time Services 181 */ 182 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 183 #define EFI_TIME_IN_DAYLIGHT 0x2 184 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 185 186 typedef struct { 187 u16 year; 188 u8 month; 189 u8 day; 190 u8 hour; 191 u8 minute; 192 u8 second; 193 u8 pad1; 194 u32 nanosecond; 195 s16 timezone; 196 u8 daylight; 197 u8 pad2; 198 } efi_time_t; 199 200 typedef struct { 201 u32 resolution; 202 u32 accuracy; 203 u8 sets_to_zero; 204 } efi_time_cap_t; 205 206 typedef struct { 207 efi_table_hdr_t hdr; 208 u32 raise_tpl; 209 u32 restore_tpl; 210 u32 allocate_pages; 211 u32 free_pages; 212 u32 get_memory_map; 213 u32 allocate_pool; 214 u32 free_pool; 215 u32 create_event; 216 u32 set_timer; 217 u32 wait_for_event; 218 u32 signal_event; 219 u32 close_event; 220 u32 check_event; 221 u32 install_protocol_interface; 222 u32 reinstall_protocol_interface; 223 u32 uninstall_protocol_interface; 224 u32 handle_protocol; 225 u32 __reserved; 226 u32 register_protocol_notify; 227 u32 locate_handle; 228 u32 locate_device_path; 229 u32 install_configuration_table; 230 u32 load_image; 231 u32 start_image; 232 u32 exit; 233 u32 unload_image; 234 u32 exit_boot_services; 235 u32 get_next_monotonic_count; 236 u32 stall; 237 u32 set_watchdog_timer; 238 u32 connect_controller; 239 u32 disconnect_controller; 240 u32 open_protocol; 241 u32 close_protocol; 242 u32 open_protocol_information; 243 u32 protocols_per_handle; 244 u32 locate_handle_buffer; 245 u32 locate_protocol; 246 u32 install_multiple_protocol_interfaces; 247 u32 uninstall_multiple_protocol_interfaces; 248 u32 calculate_crc32; 249 u32 copy_mem; 250 u32 set_mem; 251 u32 create_event_ex; 252 } __packed efi_boot_services_32_t; 253 254 typedef struct { 255 efi_table_hdr_t hdr; 256 u64 raise_tpl; 257 u64 restore_tpl; 258 u64 allocate_pages; 259 u64 free_pages; 260 u64 get_memory_map; 261 u64 allocate_pool; 262 u64 free_pool; 263 u64 create_event; 264 u64 set_timer; 265 u64 wait_for_event; 266 u64 signal_event; 267 u64 close_event; 268 u64 check_event; 269 u64 install_protocol_interface; 270 u64 reinstall_protocol_interface; 271 u64 uninstall_protocol_interface; 272 u64 handle_protocol; 273 u64 __reserved; 274 u64 register_protocol_notify; 275 u64 locate_handle; 276 u64 locate_device_path; 277 u64 install_configuration_table; 278 u64 load_image; 279 u64 start_image; 280 u64 exit; 281 u64 unload_image; 282 u64 exit_boot_services; 283 u64 get_next_monotonic_count; 284 u64 stall; 285 u64 set_watchdog_timer; 286 u64 connect_controller; 287 u64 disconnect_controller; 288 u64 open_protocol; 289 u64 close_protocol; 290 u64 open_protocol_information; 291 u64 protocols_per_handle; 292 u64 locate_handle_buffer; 293 u64 locate_protocol; 294 u64 install_multiple_protocol_interfaces; 295 u64 uninstall_multiple_protocol_interfaces; 296 u64 calculate_crc32; 297 u64 copy_mem; 298 u64 set_mem; 299 u64 create_event_ex; 300 } __packed efi_boot_services_64_t; 301 302 /* 303 * EFI Boot Services table 304 */ 305 typedef struct { 306 efi_table_hdr_t hdr; 307 void *raise_tpl; 308 void *restore_tpl; 309 efi_status_t (*allocate_pages)(int, int, unsigned long, 310 efi_physical_addr_t *); 311 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 312 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 313 unsigned long *, u32 *); 314 efi_status_t (*allocate_pool)(int, unsigned long, void **); 315 efi_status_t (*free_pool)(void *); 316 void *create_event; 317 void *set_timer; 318 void *wait_for_event; 319 void *signal_event; 320 void *close_event; 321 void *check_event; 322 void *install_protocol_interface; 323 void *reinstall_protocol_interface; 324 void *uninstall_protocol_interface; 325 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 326 void *__reserved; 327 void *register_protocol_notify; 328 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 329 unsigned long *, efi_handle_t *); 330 void *locate_device_path; 331 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 332 void *load_image; 333 void *start_image; 334 void *exit; 335 void *unload_image; 336 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 337 void *get_next_monotonic_count; 338 void *stall; 339 void *set_watchdog_timer; 340 void *connect_controller; 341 void *disconnect_controller; 342 void *open_protocol; 343 void *close_protocol; 344 void *open_protocol_information; 345 void *protocols_per_handle; 346 void *locate_handle_buffer; 347 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 348 void *install_multiple_protocol_interfaces; 349 void *uninstall_multiple_protocol_interfaces; 350 void *calculate_crc32; 351 void *copy_mem; 352 void *set_mem; 353 void *create_event_ex; 354 } efi_boot_services_t; 355 356 typedef enum { 357 EfiPciIoWidthUint8, 358 EfiPciIoWidthUint16, 359 EfiPciIoWidthUint32, 360 EfiPciIoWidthUint64, 361 EfiPciIoWidthFifoUint8, 362 EfiPciIoWidthFifoUint16, 363 EfiPciIoWidthFifoUint32, 364 EfiPciIoWidthFifoUint64, 365 EfiPciIoWidthFillUint8, 366 EfiPciIoWidthFillUint16, 367 EfiPciIoWidthFillUint32, 368 EfiPciIoWidthFillUint64, 369 EfiPciIoWidthMaximum 370 } EFI_PCI_IO_PROTOCOL_WIDTH; 371 372 typedef enum { 373 EfiPciIoAttributeOperationGet, 374 EfiPciIoAttributeOperationSet, 375 EfiPciIoAttributeOperationEnable, 376 EfiPciIoAttributeOperationDisable, 377 EfiPciIoAttributeOperationSupported, 378 EfiPciIoAttributeOperationMaximum 379 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 380 381 typedef struct { 382 u32 read; 383 u32 write; 384 } efi_pci_io_protocol_access_32_t; 385 386 typedef struct { 387 u64 read; 388 u64 write; 389 } efi_pci_io_protocol_access_64_t; 390 391 typedef struct { 392 void *read; 393 void *write; 394 } efi_pci_io_protocol_access_t; 395 396 typedef struct { 397 u32 poll_mem; 398 u32 poll_io; 399 efi_pci_io_protocol_access_32_t mem; 400 efi_pci_io_protocol_access_32_t io; 401 efi_pci_io_protocol_access_32_t pci; 402 u32 copy_mem; 403 u32 map; 404 u32 unmap; 405 u32 allocate_buffer; 406 u32 free_buffer; 407 u32 flush; 408 u32 get_location; 409 u32 attributes; 410 u32 get_bar_attributes; 411 u32 set_bar_attributes; 412 u64 romsize; 413 u32 romimage; 414 } efi_pci_io_protocol_32_t; 415 416 typedef struct { 417 u64 poll_mem; 418 u64 poll_io; 419 efi_pci_io_protocol_access_64_t mem; 420 efi_pci_io_protocol_access_64_t io; 421 efi_pci_io_protocol_access_64_t pci; 422 u64 copy_mem; 423 u64 map; 424 u64 unmap; 425 u64 allocate_buffer; 426 u64 free_buffer; 427 u64 flush; 428 u64 get_location; 429 u64 attributes; 430 u64 get_bar_attributes; 431 u64 set_bar_attributes; 432 u64 romsize; 433 u64 romimage; 434 } efi_pci_io_protocol_64_t; 435 436 typedef struct { 437 void *poll_mem; 438 void *poll_io; 439 efi_pci_io_protocol_access_t mem; 440 efi_pci_io_protocol_access_t io; 441 efi_pci_io_protocol_access_t pci; 442 void *copy_mem; 443 void *map; 444 void *unmap; 445 void *allocate_buffer; 446 void *free_buffer; 447 void *flush; 448 void *get_location; 449 void *attributes; 450 void *get_bar_attributes; 451 void *set_bar_attributes; 452 uint64_t romsize; 453 void *romimage; 454 } efi_pci_io_protocol_t; 455 456 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 457 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 458 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 459 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 460 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 461 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 462 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 463 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 464 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 465 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 466 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 467 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 468 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 469 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 470 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 471 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 472 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 473 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 474 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 475 476 typedef struct { 477 u32 version; 478 u32 get; 479 u32 set; 480 u32 del; 481 u32 get_all; 482 } apple_properties_protocol_32_t; 483 484 typedef struct { 485 u64 version; 486 u64 get; 487 u64 set; 488 u64 del; 489 u64 get_all; 490 } apple_properties_protocol_64_t; 491 492 typedef struct { 493 u32 get_capability; 494 u32 get_event_log; 495 u32 hash_log_extend_event; 496 u32 submit_command; 497 u32 get_active_pcr_banks; 498 u32 set_active_pcr_banks; 499 u32 get_result_of_set_active_pcr_banks; 500 } efi_tcg2_protocol_32_t; 501 502 typedef struct { 503 u64 get_capability; 504 u64 get_event_log; 505 u64 hash_log_extend_event; 506 u64 submit_command; 507 u64 get_active_pcr_banks; 508 u64 set_active_pcr_banks; 509 u64 get_result_of_set_active_pcr_banks; 510 } efi_tcg2_protocol_64_t; 511 512 typedef u32 efi_tcg2_event_log_format; 513 514 typedef struct { 515 void *get_capability; 516 efi_status_t (*get_event_log)(efi_handle_t, efi_tcg2_event_log_format, 517 efi_physical_addr_t *, efi_physical_addr_t *, efi_bool_t *); 518 void *hash_log_extend_event; 519 void *submit_command; 520 void *get_active_pcr_banks; 521 void *set_active_pcr_banks; 522 void *get_result_of_set_active_pcr_banks; 523 } efi_tcg2_protocol_t; 524 525 /* 526 * Types and defines for EFI ResetSystem 527 */ 528 #define EFI_RESET_COLD 0 529 #define EFI_RESET_WARM 1 530 #define EFI_RESET_SHUTDOWN 2 531 532 /* 533 * EFI Runtime Services table 534 */ 535 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 536 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 537 538 typedef struct { 539 efi_table_hdr_t hdr; 540 u32 get_time; 541 u32 set_time; 542 u32 get_wakeup_time; 543 u32 set_wakeup_time; 544 u32 set_virtual_address_map; 545 u32 convert_pointer; 546 u32 get_variable; 547 u32 get_next_variable; 548 u32 set_variable; 549 u32 get_next_high_mono_count; 550 u32 reset_system; 551 u32 update_capsule; 552 u32 query_capsule_caps; 553 u32 query_variable_info; 554 } efi_runtime_services_32_t; 555 556 typedef struct { 557 efi_table_hdr_t hdr; 558 u64 get_time; 559 u64 set_time; 560 u64 get_wakeup_time; 561 u64 set_wakeup_time; 562 u64 set_virtual_address_map; 563 u64 convert_pointer; 564 u64 get_variable; 565 u64 get_next_variable; 566 u64 set_variable; 567 u64 get_next_high_mono_count; 568 u64 reset_system; 569 u64 update_capsule; 570 u64 query_capsule_caps; 571 u64 query_variable_info; 572 } efi_runtime_services_64_t; 573 574 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 575 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 576 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 577 efi_time_t *tm); 578 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 579 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 580 unsigned long *data_size, void *data); 581 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 582 efi_guid_t *vendor); 583 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 584 u32 attr, unsigned long data_size, 585 void *data); 586 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 587 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 588 unsigned long data_size, efi_char16_t *data); 589 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 590 unsigned long descriptor_size, 591 u32 descriptor_version, 592 efi_memory_desc_t *virtual_map); 593 typedef efi_status_t efi_query_variable_info_t(u32 attr, 594 u64 *storage_space, 595 u64 *remaining_space, 596 u64 *max_variable_size); 597 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 598 unsigned long count, 599 unsigned long sg_list); 600 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 601 unsigned long count, 602 u64 *max_size, 603 int *reset_type); 604 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 605 unsigned long size, 606 bool nonblocking); 607 608 typedef struct { 609 efi_table_hdr_t hdr; 610 efi_get_time_t *get_time; 611 efi_set_time_t *set_time; 612 efi_get_wakeup_time_t *get_wakeup_time; 613 efi_set_wakeup_time_t *set_wakeup_time; 614 efi_set_virtual_address_map_t *set_virtual_address_map; 615 void *convert_pointer; 616 efi_get_variable_t *get_variable; 617 efi_get_next_variable_t *get_next_variable; 618 efi_set_variable_t *set_variable; 619 efi_get_next_high_mono_count_t *get_next_high_mono_count; 620 efi_reset_system_t *reset_system; 621 efi_update_capsule_t *update_capsule; 622 efi_query_capsule_caps_t *query_capsule_caps; 623 efi_query_variable_info_t *query_variable_info; 624 } efi_runtime_services_t; 625 626 void efi_native_runtime_setup(void); 627 628 /* 629 * EFI Configuration Table and GUID definitions 630 * 631 * These are all defined in a single line to make them easier to 632 * grep for and to see them at a glance - while still having a 633 * similar structure to the definitions in the spec. 634 * 635 * Here's how they are structured: 636 * 637 * GUID: 12345678-1234-1234-1234-123456789012 638 * Spec: 639 * #define EFI_SOME_PROTOCOL_GUID \ 640 * {0x12345678,0x1234,0x1234,\ 641 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} 642 * Here: 643 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) 644 * ^ tabs ^extra space 645 * 646 * Note that the 'extra space' separates the values at the same place 647 * where the UEFI SPEC breaks the line. 648 */ 649 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 650 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 651 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 652 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 653 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 654 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 655 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 656 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 657 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 658 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 659 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 660 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 661 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 662 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 663 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 664 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 665 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 666 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 667 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 668 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 669 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 670 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 671 #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61) 672 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 673 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 674 #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) 675 #define EFI_TCG2_PROTOCOL_GUID EFI_GUID(0x607f766c, 0x7455, 0x42be, 0x93, 0x0b, 0xe4, 0xd7, 0x6d, 0xb2, 0x72, 0x0f) 676 677 #define EFI_IMAGE_SECURITY_DATABASE_GUID EFI_GUID(0xd719b2cb, 0x3d3a, 0x4596, 0xa3, 0xbc, 0xda, 0xd0, 0x0e, 0x67, 0x65, 0x6f) 678 #define EFI_SHIM_LOCK_GUID EFI_GUID(0x605dab50, 0xe046, 0x4300, 0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23) 679 680 #define EFI_CERT_SHA256_GUID EFI_GUID(0xc1c41626, 0x504c, 0x4092, 0xac, 0xa9, 0x41, 0xf9, 0x36, 0x93, 0x43, 0x28) 681 #define EFI_CERT_X509_GUID EFI_GUID(0xa5c059a1, 0x94e4, 0x4aa7, 0x87, 0xb5, 0xab, 0x15, 0x5c, 0x2b, 0xf0, 0x72) 682 #define EFI_CERT_X509_SHA256_GUID EFI_GUID(0x3bd2a492, 0x96c0, 0x4079, 0xb4, 0x20, 0xfc, 0xf9, 0x8e, 0xf1, 0x03, 0xed) 683 684 /* 685 * This GUID is used to pass to the kernel proper the struct screen_info 686 * structure that was populated by the stub based on the GOP protocol instance 687 * associated with ConOut 688 */ 689 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 690 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 691 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b) 692 #define LINUX_EFI_TPM_EVENT_LOG_GUID EFI_GUID(0xb7799cb0, 0xeca2, 0x4943, 0x96, 0x67, 0x1f, 0xae, 0x07, 0xb7, 0x47, 0xfa) 693 #define LINUX_EFI_TPM_FINAL_LOG_GUID EFI_GUID(0x1e2ed096, 0x30e2, 0x4254, 0xbd, 0x89, 0x86, 0x3b, 0xbe, 0xf8, 0x23, 0x25) 694 #define LINUX_EFI_MEMRESERVE_TABLE_GUID EFI_GUID(0x888eb0c6, 0x8ede, 0x4ff5, 0xa8, 0xf0, 0x9a, 0xee, 0x5c, 0xb9, 0x77, 0xc2) 695 696 /* OEM GUIDs */ 697 #define DELLEMC_EFI_RCI2_TABLE_GUID EFI_GUID(0x2d9f28a2, 0xa886, 0x456a, 0x97, 0xa8, 0xf1, 0x1e, 0xf2, 0x4f, 0xf4, 0x55) 698 699 typedef struct { 700 efi_guid_t guid; 701 u64 table; 702 } efi_config_table_64_t; 703 704 typedef struct { 705 efi_guid_t guid; 706 u32 table; 707 } efi_config_table_32_t; 708 709 typedef struct { 710 efi_guid_t guid; 711 unsigned long table; 712 } efi_config_table_t; 713 714 typedef struct { 715 efi_guid_t guid; 716 const char *name; 717 unsigned long *ptr; 718 } efi_config_table_type_t; 719 720 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 721 722 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 723 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 724 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 725 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 726 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 727 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 728 729 typedef struct { 730 efi_table_hdr_t hdr; 731 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 732 u32 fw_revision; 733 u32 __pad1; 734 u64 con_in_handle; 735 u64 con_in; 736 u64 con_out_handle; 737 u64 con_out; 738 u64 stderr_handle; 739 u64 stderr; 740 u64 runtime; 741 u64 boottime; 742 u32 nr_tables; 743 u32 __pad2; 744 u64 tables; 745 } efi_system_table_64_t; 746 747 typedef struct { 748 efi_table_hdr_t hdr; 749 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 750 u32 fw_revision; 751 u32 con_in_handle; 752 u32 con_in; 753 u32 con_out_handle; 754 u32 con_out; 755 u32 stderr_handle; 756 u32 stderr; 757 u32 runtime; 758 u32 boottime; 759 u32 nr_tables; 760 u32 tables; 761 } efi_system_table_32_t; 762 763 typedef struct { 764 efi_table_hdr_t hdr; 765 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 766 u32 fw_revision; 767 unsigned long con_in_handle; 768 unsigned long con_in; 769 unsigned long con_out_handle; 770 unsigned long con_out; 771 unsigned long stderr_handle; 772 unsigned long stderr; 773 efi_runtime_services_t *runtime; 774 efi_boot_services_t *boottime; 775 unsigned long nr_tables; 776 unsigned long tables; 777 } efi_system_table_t; 778 779 /* 780 * Architecture independent structure for describing a memory map for the 781 * benefit of efi_memmap_init_early(), saving us the need to pass four 782 * parameters. 783 */ 784 struct efi_memory_map_data { 785 phys_addr_t phys_map; 786 unsigned long size; 787 unsigned long desc_version; 788 unsigned long desc_size; 789 }; 790 791 struct efi_memory_map { 792 phys_addr_t phys_map; 793 void *map; 794 void *map_end; 795 int nr_map; 796 unsigned long desc_version; 797 unsigned long desc_size; 798 bool late; 799 }; 800 801 struct efi_mem_range { 802 struct range range; 803 u64 attribute; 804 }; 805 806 struct efi_fdt_params { 807 u64 system_table; 808 u64 mmap; 809 u32 mmap_size; 810 u32 desc_size; 811 u32 desc_ver; 812 }; 813 814 typedef struct { 815 u32 revision; 816 u32 parent_handle; 817 u32 system_table; 818 u32 device_handle; 819 u32 file_path; 820 u32 reserved; 821 u32 load_options_size; 822 u32 load_options; 823 u32 image_base; 824 __aligned_u64 image_size; 825 unsigned int image_code_type; 826 unsigned int image_data_type; 827 unsigned long unload; 828 } efi_loaded_image_32_t; 829 830 typedef struct { 831 u32 revision; 832 u64 parent_handle; 833 u64 system_table; 834 u64 device_handle; 835 u64 file_path; 836 u64 reserved; 837 u32 load_options_size; 838 u64 load_options; 839 u64 image_base; 840 __aligned_u64 image_size; 841 unsigned int image_code_type; 842 unsigned int image_data_type; 843 unsigned long unload; 844 } efi_loaded_image_64_t; 845 846 typedef struct { 847 u32 revision; 848 void *parent_handle; 849 efi_system_table_t *system_table; 850 void *device_handle; 851 void *file_path; 852 void *reserved; 853 u32 load_options_size; 854 void *load_options; 855 void *image_base; 856 __aligned_u64 image_size; 857 unsigned int image_code_type; 858 unsigned int image_data_type; 859 unsigned long unload; 860 } efi_loaded_image_t; 861 862 863 typedef struct { 864 u64 size; 865 u64 file_size; 866 u64 phys_size; 867 efi_time_t create_time; 868 efi_time_t last_access_time; 869 efi_time_t modification_time; 870 __aligned_u64 attribute; 871 efi_char16_t filename[1]; 872 } efi_file_info_t; 873 874 typedef struct { 875 u64 revision; 876 u32 open; 877 u32 close; 878 u32 delete; 879 u32 read; 880 u32 write; 881 u32 get_position; 882 u32 set_position; 883 u32 get_info; 884 u32 set_info; 885 u32 flush; 886 } efi_file_handle_32_t; 887 888 typedef struct { 889 u64 revision; 890 u64 open; 891 u64 close; 892 u64 delete; 893 u64 read; 894 u64 write; 895 u64 get_position; 896 u64 set_position; 897 u64 get_info; 898 u64 set_info; 899 u64 flush; 900 } efi_file_handle_64_t; 901 902 typedef struct _efi_file_handle { 903 u64 revision; 904 efi_status_t (*open)(struct _efi_file_handle *, 905 struct _efi_file_handle **, 906 efi_char16_t *, u64, u64); 907 efi_status_t (*close)(struct _efi_file_handle *); 908 void *delete; 909 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 910 void *); 911 void *write; 912 void *get_position; 913 void *set_position; 914 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 915 unsigned long *, void *); 916 void *set_info; 917 void *flush; 918 } efi_file_handle_t; 919 920 typedef struct { 921 u64 revision; 922 u32 open_volume; 923 } efi_file_io_interface_32_t; 924 925 typedef struct { 926 u64 revision; 927 u64 open_volume; 928 } efi_file_io_interface_64_t; 929 930 typedef struct _efi_file_io_interface { 931 u64 revision; 932 int (*open_volume)(struct _efi_file_io_interface *, 933 efi_file_handle_t **); 934 } efi_file_io_interface_t; 935 936 #define EFI_FILE_MODE_READ 0x0000000000000001 937 #define EFI_FILE_MODE_WRITE 0x0000000000000002 938 #define EFI_FILE_MODE_CREATE 0x8000000000000000 939 940 typedef struct { 941 u32 version; 942 u32 length; 943 u64 memory_protection_attribute; 944 } efi_properties_table_t; 945 946 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 947 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 948 949 #define EFI_INVALID_TABLE_ADDR (~0UL) 950 951 typedef struct { 952 u32 version; 953 u32 num_entries; 954 u32 desc_size; 955 u32 reserved; 956 efi_memory_desc_t entry[0]; 957 } efi_memory_attributes_table_t; 958 959 typedef struct { 960 efi_guid_t signature_owner; 961 u8 signature_data[]; 962 } efi_signature_data_t; 963 964 typedef struct { 965 efi_guid_t signature_type; 966 u32 signature_list_size; 967 u32 signature_header_size; 968 u32 signature_size; 969 u8 signature_header[]; 970 /* efi_signature_data_t signatures[][] */ 971 } efi_signature_list_t; 972 973 typedef u8 efi_sha256_hash_t[32]; 974 975 typedef struct { 976 efi_sha256_hash_t to_be_signed_hash; 977 efi_time_t time_of_revocation; 978 } efi_cert_x509_sha256_t; 979 980 /* 981 * All runtime access to EFI goes through this structure: 982 */ 983 extern struct efi { 984 efi_system_table_t *systab; /* EFI system table */ 985 unsigned int runtime_version; /* Runtime services version */ 986 unsigned long mps; /* MPS table */ 987 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 988 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 989 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 990 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 991 unsigned long boot_info; /* boot info table */ 992 unsigned long hcdp; /* HCDP table */ 993 unsigned long uga; /* UGA table */ 994 unsigned long fw_vendor; /* fw_vendor */ 995 unsigned long runtime; /* runtime table */ 996 unsigned long config_table; /* config tables */ 997 unsigned long esrt; /* ESRT table */ 998 unsigned long properties_table; /* properties table */ 999 unsigned long mem_attr_table; /* memory attributes table */ 1000 unsigned long rng_seed; /* UEFI firmware random seed */ 1001 unsigned long tpm_log; /* TPM2 Event Log table */ 1002 unsigned long tpm_final_log; /* TPM2 Final Events Log table */ 1003 unsigned long mem_reserve; /* Linux EFI memreserve table */ 1004 efi_get_time_t *get_time; 1005 efi_set_time_t *set_time; 1006 efi_get_wakeup_time_t *get_wakeup_time; 1007 efi_set_wakeup_time_t *set_wakeup_time; 1008 efi_get_variable_t *get_variable; 1009 efi_get_next_variable_t *get_next_variable; 1010 efi_set_variable_t *set_variable; 1011 efi_set_variable_t *set_variable_nonblocking; 1012 efi_query_variable_info_t *query_variable_info; 1013 efi_query_variable_info_t *query_variable_info_nonblocking; 1014 efi_update_capsule_t *update_capsule; 1015 efi_query_capsule_caps_t *query_capsule_caps; 1016 efi_get_next_high_mono_count_t *get_next_high_mono_count; 1017 efi_reset_system_t *reset_system; 1018 efi_set_virtual_address_map_t *set_virtual_address_map; 1019 struct efi_memory_map memmap; 1020 unsigned long flags; 1021 } efi; 1022 1023 extern struct mm_struct efi_mm; 1024 1025 static inline int 1026 efi_guidcmp (efi_guid_t left, efi_guid_t right) 1027 { 1028 return memcmp(&left, &right, sizeof (efi_guid_t)); 1029 } 1030 1031 static inline char * 1032 efi_guid_to_str(efi_guid_t *guid, char *out) 1033 { 1034 sprintf(out, "%pUl", guid->b); 1035 return out; 1036 } 1037 1038 extern void efi_init (void); 1039 extern void *efi_get_pal_addr (void); 1040 extern void efi_map_pal_code (void); 1041 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 1042 extern void efi_gettimeofday (struct timespec64 *ts); 1043 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 1044 #ifdef CONFIG_X86 1045 extern efi_status_t efi_query_variable_store(u32 attributes, 1046 unsigned long size, 1047 bool nonblocking); 1048 #else 1049 1050 static inline efi_status_t efi_query_variable_store(u32 attributes, 1051 unsigned long size, 1052 bool nonblocking) 1053 { 1054 return EFI_SUCCESS; 1055 } 1056 #endif 1057 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 1058 1059 extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries); 1060 extern int __init efi_memmap_init_early(struct efi_memory_map_data *data); 1061 extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size); 1062 extern void __init efi_memmap_unmap(void); 1063 extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map); 1064 extern int __init efi_memmap_split_count(efi_memory_desc_t *md, 1065 struct range *range); 1066 extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, 1067 void *buf, struct efi_mem_range *mem); 1068 1069 extern int efi_config_init(efi_config_table_type_t *arch_tables); 1070 #ifdef CONFIG_EFI_ESRT 1071 extern void __init efi_esrt_init(void); 1072 #else 1073 static inline void efi_esrt_init(void) { } 1074 #endif 1075 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 1076 efi_config_table_type_t *arch_tables); 1077 extern u64 efi_get_iobase (void); 1078 extern int efi_mem_type(unsigned long phys_addr); 1079 extern u64 efi_mem_attributes (unsigned long phys_addr); 1080 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 1081 extern int __init efi_uart_console_only (void); 1082 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 1083 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 1084 extern void efi_mem_reserve(phys_addr_t addr, u64 size); 1085 extern int efi_mem_reserve_persistent(phys_addr_t addr, u64 size); 1086 extern void efi_initialize_iomem_resources(struct resource *code_resource, 1087 struct resource *data_resource, struct resource *bss_resource); 1088 extern int efi_get_fdt_params(struct efi_fdt_params *params); 1089 extern struct kobject *efi_kobj; 1090 1091 extern int efi_reboot_quirk_mode; 1092 extern bool efi_poweroff_required(void); 1093 1094 #ifdef CONFIG_EFI_FAKE_MEMMAP 1095 extern void __init efi_fake_memmap(void); 1096 #else 1097 static inline void efi_fake_memmap(void) { } 1098 #endif 1099 1100 /* 1101 * efi_memattr_perm_setter - arch specific callback function passed into 1102 * efi_memattr_apply_permissions() that updates the 1103 * mapping permissions described by the second 1104 * argument in the page tables referred to by the 1105 * first argument. 1106 */ 1107 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 1108 1109 extern int efi_memattr_init(void); 1110 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 1111 efi_memattr_perm_setter fn); 1112 1113 /* 1114 * efi_early_memdesc_ptr - get the n-th EFI memmap descriptor 1115 * @map: the start of efi memmap 1116 * @desc_size: the size of space for each EFI memmap descriptor 1117 * @n: the index of efi memmap descriptor 1118 * 1119 * EFI boot service provides the GetMemoryMap() function to get a copy of the 1120 * current memory map which is an array of memory descriptors, each of 1121 * which describes a contiguous block of memory. It also gets the size of the 1122 * map, and the size of each descriptor, etc. 1123 * 1124 * Note that per section 6.2 of UEFI Spec 2.6 Errata A, the returned size of 1125 * each descriptor might not be equal to sizeof(efi_memory_memdesc_t), 1126 * since efi_memory_memdesc_t may be extended in the future. Thus the OS 1127 * MUST use the returned size of the descriptor to find the start of each 1128 * efi_memory_memdesc_t in the memory map array. This should only be used 1129 * during bootup since for_each_efi_memory_desc_xxx() is available after the 1130 * kernel initializes the EFI subsystem to set up struct efi_memory_map. 1131 */ 1132 #define efi_early_memdesc_ptr(map, desc_size, n) \ 1133 (efi_memory_desc_t *)((void *)(map) + ((n) * (desc_size))) 1134 1135 /* Iterate through an efi_memory_map */ 1136 #define for_each_efi_memory_desc_in_map(m, md) \ 1137 for ((md) = (m)->map; \ 1138 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ 1139 (md) = (void *)(md) + (m)->desc_size) 1140 1141 /** 1142 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 1143 * @md: the efi_memory_desc_t * iterator 1144 * 1145 * Once the loop finishes @md must not be accessed. 1146 */ 1147 #define for_each_efi_memory_desc(md) \ 1148 for_each_efi_memory_desc_in_map(&efi.memmap, md) 1149 1150 /* 1151 * Format an EFI memory descriptor's type and attributes to a user-provided 1152 * character buffer, as per snprintf(), and return the buffer. 1153 */ 1154 char * __init efi_md_typeattr_format(char *buf, size_t size, 1155 const efi_memory_desc_t *md); 1156 1157 1158 typedef void (*efi_element_handler_t)(const char *source, 1159 const void *element_data, 1160 size_t element_size); 1161 extern int __init parse_efi_signature_list( 1162 const char *source, 1163 const void *data, size_t size, 1164 efi_element_handler_t (*get_handler_for_guid)(const efi_guid_t *)); 1165 1166 /** 1167 * efi_range_is_wc - check the WC bit on an address range 1168 * @start: starting kvirt address 1169 * @len: length of range 1170 * 1171 * Consult the EFI memory map and make sure it's ok to set this range WC. 1172 * Returns true or false. 1173 */ 1174 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 1175 { 1176 unsigned long i; 1177 1178 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 1179 unsigned long paddr = __pa(start + i); 1180 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 1181 return 0; 1182 } 1183 /* The range checked out */ 1184 return 1; 1185 } 1186 1187 #ifdef CONFIG_EFI_PCDP 1188 extern int __init efi_setup_pcdp_console(char *); 1189 #endif 1190 1191 /* 1192 * We play games with efi_enabled so that the compiler will, if 1193 * possible, remove EFI-related code altogether. 1194 */ 1195 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1196 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1197 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1198 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1199 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1200 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1201 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1202 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1203 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1204 #define EFI_MEM_ATTR 10 /* Did firmware publish an EFI_MEMORY_ATTRIBUTES table? */ 1205 #define EFI_MEM_NO_SOFT_RESERVE 11 /* Is the kernel configured to ignore soft reservations? */ 1206 1207 #ifdef CONFIG_EFI 1208 /* 1209 * Test whether the above EFI_* bits are enabled. 1210 */ 1211 static inline bool efi_enabled(int feature) 1212 { 1213 return test_bit(feature, &efi.flags) != 0; 1214 } 1215 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1216 1217 bool __pure __efi_soft_reserve_enabled(void); 1218 1219 static inline bool __pure efi_soft_reserve_enabled(void) 1220 { 1221 return IS_ENABLED(CONFIG_EFI_SOFT_RESERVE) 1222 && __efi_soft_reserve_enabled(); 1223 } 1224 #else 1225 static inline bool efi_enabled(int feature) 1226 { 1227 return false; 1228 } 1229 static inline void 1230 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1231 1232 static inline bool 1233 efi_capsule_pending(int *reset_type) 1234 { 1235 return false; 1236 } 1237 1238 static inline bool efi_soft_reserve_enabled(void) 1239 { 1240 return false; 1241 } 1242 #endif 1243 1244 extern int efi_status_to_err(efi_status_t status); 1245 1246 /* 1247 * Variable Attributes 1248 */ 1249 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1250 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1251 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1252 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1253 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1254 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1255 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1256 1257 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1258 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1259 EFI_VARIABLE_RUNTIME_ACCESS | \ 1260 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1261 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1262 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1263 EFI_VARIABLE_APPEND_WRITE) 1264 /* 1265 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1266 * not including trailing NUL 1267 */ 1268 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN 1269 1270 /* 1271 * The type of search to perform when calling boottime->locate_handle 1272 */ 1273 #define EFI_LOCATE_ALL_HANDLES 0 1274 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1275 #define EFI_LOCATE_BY_PROTOCOL 2 1276 1277 /* 1278 * EFI Device Path information 1279 */ 1280 #define EFI_DEV_HW 0x01 1281 #define EFI_DEV_PCI 1 1282 #define EFI_DEV_PCCARD 2 1283 #define EFI_DEV_MEM_MAPPED 3 1284 #define EFI_DEV_VENDOR 4 1285 #define EFI_DEV_CONTROLLER 5 1286 #define EFI_DEV_ACPI 0x02 1287 #define EFI_DEV_BASIC_ACPI 1 1288 #define EFI_DEV_EXPANDED_ACPI 2 1289 #define EFI_DEV_MSG 0x03 1290 #define EFI_DEV_MSG_ATAPI 1 1291 #define EFI_DEV_MSG_SCSI 2 1292 #define EFI_DEV_MSG_FC 3 1293 #define EFI_DEV_MSG_1394 4 1294 #define EFI_DEV_MSG_USB 5 1295 #define EFI_DEV_MSG_USB_CLASS 15 1296 #define EFI_DEV_MSG_I20 6 1297 #define EFI_DEV_MSG_MAC 11 1298 #define EFI_DEV_MSG_IPV4 12 1299 #define EFI_DEV_MSG_IPV6 13 1300 #define EFI_DEV_MSG_INFINIBAND 9 1301 #define EFI_DEV_MSG_UART 14 1302 #define EFI_DEV_MSG_VENDOR 10 1303 #define EFI_DEV_MEDIA 0x04 1304 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1305 #define EFI_DEV_MEDIA_CDROM 2 1306 #define EFI_DEV_MEDIA_VENDOR 3 1307 #define EFI_DEV_MEDIA_FILE 4 1308 #define EFI_DEV_MEDIA_PROTOCOL 5 1309 #define EFI_DEV_BIOS_BOOT 0x05 1310 #define EFI_DEV_END_PATH 0x7F 1311 #define EFI_DEV_END_PATH2 0xFF 1312 #define EFI_DEV_END_INSTANCE 0x01 1313 #define EFI_DEV_END_ENTIRE 0xFF 1314 1315 struct efi_generic_dev_path { 1316 u8 type; 1317 u8 sub_type; 1318 u16 length; 1319 } __attribute ((packed)); 1320 1321 struct efi_dev_path { 1322 u8 type; /* can be replaced with unnamed */ 1323 u8 sub_type; /* struct efi_generic_dev_path; */ 1324 u16 length; /* once we've moved to -std=c11 */ 1325 union { 1326 struct { 1327 u32 hid; 1328 u32 uid; 1329 } acpi; 1330 struct { 1331 u8 fn; 1332 u8 dev; 1333 } pci; 1334 }; 1335 } __attribute ((packed)); 1336 1337 #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER) 1338 struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len); 1339 #endif 1340 1341 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1342 { 1343 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1344 *addr &= PAGE_MASK; 1345 } 1346 1347 /* 1348 * EFI Variable support. 1349 * 1350 * Different firmware drivers can expose their EFI-like variables using 1351 * the following. 1352 */ 1353 1354 struct efivar_operations { 1355 efi_get_variable_t *get_variable; 1356 efi_get_next_variable_t *get_next_variable; 1357 efi_set_variable_t *set_variable; 1358 efi_set_variable_t *set_variable_nonblocking; 1359 efi_query_variable_store_t *query_variable_store; 1360 }; 1361 1362 struct efivars { 1363 struct kset *kset; 1364 struct kobject *kobject; 1365 const struct efivar_operations *ops; 1366 }; 1367 1368 /* 1369 * The maximum size of VariableName + Data = 1024 1370 * Therefore, it's reasonable to save that much 1371 * space in each part of the structure, 1372 * and we use a page for reading/writing. 1373 */ 1374 1375 #define EFI_VAR_NAME_LEN 1024 1376 1377 struct efi_variable { 1378 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1379 efi_guid_t VendorGuid; 1380 unsigned long DataSize; 1381 __u8 Data[1024]; 1382 efi_status_t Status; 1383 __u32 Attributes; 1384 } __attribute__((packed)); 1385 1386 struct efivar_entry { 1387 struct efi_variable var; 1388 struct list_head list; 1389 struct kobject kobj; 1390 bool scanning; 1391 bool deleting; 1392 }; 1393 1394 typedef struct { 1395 u32 reset; 1396 u32 output_string; 1397 u32 test_string; 1398 } efi_simple_text_output_protocol_32_t; 1399 1400 typedef struct { 1401 u64 reset; 1402 u64 output_string; 1403 u64 test_string; 1404 } efi_simple_text_output_protocol_64_t; 1405 1406 struct efi_simple_text_output_protocol { 1407 void *reset; 1408 efi_status_t (*output_string)(void *, void *); 1409 void *test_string; 1410 }; 1411 1412 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1413 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1414 #define PIXEL_BIT_MASK 2 1415 #define PIXEL_BLT_ONLY 3 1416 #define PIXEL_FORMAT_MAX 4 1417 1418 struct efi_pixel_bitmask { 1419 u32 red_mask; 1420 u32 green_mask; 1421 u32 blue_mask; 1422 u32 reserved_mask; 1423 }; 1424 1425 struct efi_graphics_output_mode_info { 1426 u32 version; 1427 u32 horizontal_resolution; 1428 u32 vertical_resolution; 1429 int pixel_format; 1430 struct efi_pixel_bitmask pixel_information; 1431 u32 pixels_per_scan_line; 1432 } __packed; 1433 1434 struct efi_graphics_output_protocol_mode_32 { 1435 u32 max_mode; 1436 u32 mode; 1437 u32 info; 1438 u32 size_of_info; 1439 u64 frame_buffer_base; 1440 u32 frame_buffer_size; 1441 } __packed; 1442 1443 struct efi_graphics_output_protocol_mode_64 { 1444 u32 max_mode; 1445 u32 mode; 1446 u64 info; 1447 u64 size_of_info; 1448 u64 frame_buffer_base; 1449 u64 frame_buffer_size; 1450 } __packed; 1451 1452 struct efi_graphics_output_protocol_mode { 1453 u32 max_mode; 1454 u32 mode; 1455 unsigned long info; 1456 unsigned long size_of_info; 1457 u64 frame_buffer_base; 1458 unsigned long frame_buffer_size; 1459 } __packed; 1460 1461 struct efi_graphics_output_protocol_32 { 1462 u32 query_mode; 1463 u32 set_mode; 1464 u32 blt; 1465 u32 mode; 1466 }; 1467 1468 struct efi_graphics_output_protocol_64 { 1469 u64 query_mode; 1470 u64 set_mode; 1471 u64 blt; 1472 u64 mode; 1473 }; 1474 1475 struct efi_graphics_output_protocol { 1476 unsigned long query_mode; 1477 unsigned long set_mode; 1478 unsigned long blt; 1479 struct efi_graphics_output_protocol_mode *mode; 1480 }; 1481 1482 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1483 struct efi_graphics_output_protocol *, u32, unsigned long *, 1484 struct efi_graphics_output_mode_info **); 1485 1486 extern struct list_head efivar_sysfs_list; 1487 1488 static inline void 1489 efivar_unregister(struct efivar_entry *var) 1490 { 1491 kobject_put(&var->kobj); 1492 } 1493 1494 int efivars_register(struct efivars *efivars, 1495 const struct efivar_operations *ops, 1496 struct kobject *kobject); 1497 int efivars_unregister(struct efivars *efivars); 1498 struct kobject *efivars_kobject(void); 1499 1500 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1501 void *data, bool duplicates, struct list_head *head); 1502 1503 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1504 int efivar_entry_remove(struct efivar_entry *entry); 1505 1506 int __efivar_entry_delete(struct efivar_entry *entry); 1507 int efivar_entry_delete(struct efivar_entry *entry); 1508 1509 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1510 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1511 unsigned long *size, void *data); 1512 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1513 unsigned long *size, void *data); 1514 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1515 unsigned long size, void *data, struct list_head *head); 1516 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1517 unsigned long *size, void *data, bool *set); 1518 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1519 bool block, unsigned long size, void *data); 1520 1521 int efivar_entry_iter_begin(void); 1522 void efivar_entry_iter_end(void); 1523 1524 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1525 struct list_head *head, void *data, 1526 struct efivar_entry **prev); 1527 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1528 struct list_head *head, void *data); 1529 1530 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1531 struct list_head *head, bool remove); 1532 1533 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1534 unsigned long data_size); 1535 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1536 size_t len); 1537 1538 extern struct work_struct efivar_work; 1539 void efivar_run_worker(void); 1540 1541 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1542 int efivars_sysfs_init(void); 1543 1544 #define EFIVARS_DATA_SIZE_MAX 1024 1545 1546 #endif /* CONFIG_EFI_VARS */ 1547 extern bool efi_capsule_pending(int *reset_type); 1548 1549 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1550 size_t size, int *reset); 1551 1552 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1553 phys_addr_t *pages); 1554 1555 #ifdef CONFIG_EFI_RUNTIME_MAP 1556 int efi_runtime_map_init(struct kobject *); 1557 int efi_get_runtime_map_size(void); 1558 int efi_get_runtime_map_desc_size(void); 1559 int efi_runtime_map_copy(void *buf, size_t bufsz); 1560 #else 1561 static inline int efi_runtime_map_init(struct kobject *kobj) 1562 { 1563 return 0; 1564 } 1565 1566 static inline int efi_get_runtime_map_size(void) 1567 { 1568 return 0; 1569 } 1570 1571 static inline int efi_get_runtime_map_desc_size(void) 1572 { 1573 return 0; 1574 } 1575 1576 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1577 { 1578 return 0; 1579 } 1580 1581 #endif 1582 1583 /* prototypes shared between arch specific and generic stub code */ 1584 1585 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1586 1587 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1588 unsigned long addr); 1589 1590 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1591 efi_loaded_image_t *image, int *cmd_line_len); 1592 1593 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1594 struct efi_boot_memmap *map); 1595 1596 efi_status_t efi_low_alloc_above(efi_system_table_t *sys_table_arg, 1597 unsigned long size, unsigned long align, 1598 unsigned long *addr, unsigned long min); 1599 1600 static inline 1601 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1602 unsigned long size, unsigned long align, 1603 unsigned long *addr) 1604 { 1605 /* 1606 * Don't allocate at 0x0. It will confuse code that 1607 * checks pointers against NULL. Skip the first 8 1608 * bytes so we start at a nice even number. 1609 */ 1610 return efi_low_alloc_above(sys_table_arg, size, align, addr, 0x8); 1611 } 1612 1613 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1614 unsigned long size, unsigned long align, 1615 unsigned long *addr, unsigned long max); 1616 1617 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1618 unsigned long *image_addr, 1619 unsigned long image_size, 1620 unsigned long alloc_size, 1621 unsigned long preferred_addr, 1622 unsigned long alignment, 1623 unsigned long min_addr); 1624 1625 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1626 efi_loaded_image_t *image, 1627 char *cmd_line, char *option_string, 1628 unsigned long max_addr, 1629 unsigned long *load_addr, 1630 unsigned long *load_size); 1631 1632 efi_status_t efi_parse_options(char const *cmdline); 1633 1634 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1635 struct screen_info *si, efi_guid_t *proto, 1636 unsigned long size); 1637 1638 #ifdef CONFIG_EFI 1639 extern bool efi_runtime_disabled(void); 1640 #else 1641 static inline bool efi_runtime_disabled(void) { return true; } 1642 #endif 1643 1644 extern void efi_call_virt_check_flags(unsigned long flags, const char *call); 1645 extern unsigned long efi_call_virt_save_flags(void); 1646 1647 enum efi_secureboot_mode { 1648 efi_secureboot_mode_unset, 1649 efi_secureboot_mode_unknown, 1650 efi_secureboot_mode_disabled, 1651 efi_secureboot_mode_enabled, 1652 }; 1653 enum efi_secureboot_mode efi_get_secureboot(efi_system_table_t *sys_table); 1654 1655 #ifdef CONFIG_RESET_ATTACK_MITIGATION 1656 void efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg); 1657 #else 1658 static inline void 1659 efi_enable_reset_attack_mitigation(efi_system_table_t *sys_table_arg) { } 1660 #endif 1661 1662 efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); 1663 1664 void efi_retrieve_tpm2_eventlog(efi_system_table_t *sys_table); 1665 1666 /* 1667 * Arch code can implement the following three template macros, avoiding 1668 * reptition for the void/non-void return cases of {__,}efi_call_virt(): 1669 * 1670 * * arch_efi_call_virt_setup() 1671 * 1672 * Sets up the environment for the call (e.g. switching page tables, 1673 * allowing kernel-mode use of floating point, if required). 1674 * 1675 * * arch_efi_call_virt() 1676 * 1677 * Performs the call. The last expression in the macro must be the call 1678 * itself, allowing the logic to be shared by the void and non-void 1679 * cases. 1680 * 1681 * * arch_efi_call_virt_teardown() 1682 * 1683 * Restores the usual kernel environment once the call has returned. 1684 */ 1685 1686 #define efi_call_virt_pointer(p, f, args...) \ 1687 ({ \ 1688 efi_status_t __s; \ 1689 unsigned long __flags; \ 1690 \ 1691 arch_efi_call_virt_setup(); \ 1692 \ 1693 __flags = efi_call_virt_save_flags(); \ 1694 __s = arch_efi_call_virt(p, f, args); \ 1695 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1696 \ 1697 arch_efi_call_virt_teardown(); \ 1698 \ 1699 __s; \ 1700 }) 1701 1702 #define __efi_call_virt_pointer(p, f, args...) \ 1703 ({ \ 1704 unsigned long __flags; \ 1705 \ 1706 arch_efi_call_virt_setup(); \ 1707 \ 1708 __flags = efi_call_virt_save_flags(); \ 1709 arch_efi_call_virt(p, f, args); \ 1710 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1711 \ 1712 arch_efi_call_virt_teardown(); \ 1713 }) 1714 1715 typedef efi_status_t (*efi_exit_boot_map_processing)( 1716 efi_system_table_t *sys_table_arg, 1717 struct efi_boot_memmap *map, 1718 void *priv); 1719 1720 efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, 1721 void *handle, 1722 struct efi_boot_memmap *map, 1723 void *priv, 1724 efi_exit_boot_map_processing priv_func); 1725 1726 #define EFI_RANDOM_SEED_SIZE 64U 1727 1728 struct linux_efi_random_seed { 1729 u32 size; 1730 u8 bits[]; 1731 }; 1732 1733 struct linux_efi_tpm_eventlog { 1734 u32 size; 1735 u32 final_events_preboot_size; 1736 u8 version; 1737 u8 log[]; 1738 }; 1739 1740 extern int efi_tpm_eventlog_init(void); 1741 1742 struct efi_tcg2_final_events_table { 1743 u64 version; 1744 u64 nr_events; 1745 u8 events[]; 1746 }; 1747 extern int efi_tpm_final_log_size; 1748 1749 extern unsigned long rci2_table_phys; 1750 1751 /* 1752 * efi_runtime_service() function identifiers. 1753 * "NONE" is used by efi_recover_from_page_fault() to check if the page 1754 * fault happened while executing an efi runtime service. 1755 */ 1756 enum efi_rts_ids { 1757 EFI_NONE, 1758 EFI_GET_TIME, 1759 EFI_SET_TIME, 1760 EFI_GET_WAKEUP_TIME, 1761 EFI_SET_WAKEUP_TIME, 1762 EFI_GET_VARIABLE, 1763 EFI_GET_NEXT_VARIABLE, 1764 EFI_SET_VARIABLE, 1765 EFI_QUERY_VARIABLE_INFO, 1766 EFI_GET_NEXT_HIGH_MONO_COUNT, 1767 EFI_RESET_SYSTEM, 1768 EFI_UPDATE_CAPSULE, 1769 EFI_QUERY_CAPSULE_CAPS, 1770 }; 1771 1772 /* 1773 * efi_runtime_work: Details of EFI Runtime Service work 1774 * @arg<1-5>: EFI Runtime Service function arguments 1775 * @status: Status of executing EFI Runtime Service 1776 * @efi_rts_id: EFI Runtime Service function identifier 1777 * @efi_rts_comp: Struct used for handling completions 1778 */ 1779 struct efi_runtime_work { 1780 void *arg1; 1781 void *arg2; 1782 void *arg3; 1783 void *arg4; 1784 void *arg5; 1785 efi_status_t status; 1786 struct work_struct work; 1787 enum efi_rts_ids efi_rts_id; 1788 struct completion efi_rts_comp; 1789 }; 1790 1791 extern struct efi_runtime_work efi_rts_work; 1792 1793 /* Workqueue to queue EFI Runtime Services */ 1794 extern struct workqueue_struct *efi_rts_wq; 1795 1796 struct linux_efi_memreserve { 1797 int size; // allocated size of the array 1798 atomic_t count; // number of entries used 1799 phys_addr_t next; // pa of next struct instance 1800 struct { 1801 phys_addr_t base; 1802 phys_addr_t size; 1803 } entry[0]; 1804 }; 1805 1806 #define EFI_MEMRESERVE_SIZE(count) (sizeof(struct linux_efi_memreserve) + \ 1807 (count) * sizeof(((struct linux_efi_memreserve *)0)->entry[0])) 1808 1809 #define EFI_MEMRESERVE_COUNT(size) (((size) - sizeof(struct linux_efi_memreserve)) \ 1810 / sizeof(((struct linux_efi_memreserve *)0)->entry[0])) 1811 1812 #endif /* _LINUX_EFI_H */ 1813