1 #ifndef _LINUX_EFI_H 2 #define _LINUX_EFI_H 3 4 /* 5 * Extensible Firmware Interface 6 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999 7 * 8 * Copyright (C) 1999 VA Linux Systems 9 * Copyright (C) 1999 Walt Drummond <[email protected]> 10 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. 11 * David Mosberger-Tang <[email protected]> 12 * Stephane Eranian <[email protected]> 13 */ 14 #include <linux/init.h> 15 #include <linux/string.h> 16 #include <linux/time.h> 17 #include <linux/types.h> 18 #include <linux/proc_fs.h> 19 #include <linux/rtc.h> 20 #include <linux/ioport.h> 21 #include <linux/pfn.h> 22 #include <linux/pstore.h> 23 #include <linux/range.h> 24 #include <linux/reboot.h> 25 #include <linux/uuid.h> 26 #include <linux/screen_info.h> 27 28 #include <asm/page.h> 29 30 #define EFI_SUCCESS 0 31 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 32 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 39 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 40 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 41 #define EFI_ABORTED (21 | (1UL << (BITS_PER_LONG-1))) 42 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 43 44 typedef unsigned long efi_status_t; 45 typedef u8 efi_bool_t; 46 typedef u16 efi_char16_t; /* UNICODE character */ 47 typedef u64 efi_physical_addr_t; 48 typedef void *efi_handle_t; 49 50 typedef uuid_le efi_guid_t; 51 52 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 53 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) 54 55 /* 56 * Generic EFI table header 57 */ 58 typedef struct { 59 u64 signature; 60 u32 revision; 61 u32 headersize; 62 u32 crc32; 63 u32 reserved; 64 } efi_table_hdr_t; 65 66 /* 67 * Memory map descriptor: 68 */ 69 70 /* Memory types: */ 71 #define EFI_RESERVED_TYPE 0 72 #define EFI_LOADER_CODE 1 73 #define EFI_LOADER_DATA 2 74 #define EFI_BOOT_SERVICES_CODE 3 75 #define EFI_BOOT_SERVICES_DATA 4 76 #define EFI_RUNTIME_SERVICES_CODE 5 77 #define EFI_RUNTIME_SERVICES_DATA 6 78 #define EFI_CONVENTIONAL_MEMORY 7 79 #define EFI_UNUSABLE_MEMORY 8 80 #define EFI_ACPI_RECLAIM_MEMORY 9 81 #define EFI_ACPI_MEMORY_NVS 10 82 #define EFI_MEMORY_MAPPED_IO 11 83 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 84 #define EFI_PAL_CODE 13 85 #define EFI_PERSISTENT_MEMORY 14 86 #define EFI_MAX_MEMORY_TYPE 15 87 88 /* Attribute values: */ 89 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 90 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 91 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 92 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 93 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 94 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 95 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 96 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 97 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 98 #define EFI_MEMORY_MORE_RELIABLE \ 99 ((u64)0x0000000000010000ULL) /* higher reliability */ 100 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 101 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 102 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 103 104 #define EFI_PAGE_SHIFT 12 105 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 106 #define EFI_PAGES_MAX (U64_MAX >> EFI_PAGE_SHIFT) 107 108 typedef struct { 109 u32 type; 110 u32 pad; 111 u64 phys_addr; 112 u64 virt_addr; 113 u64 num_pages; 114 u64 attribute; 115 } efi_memory_desc_t; 116 117 typedef struct { 118 efi_guid_t guid; 119 u32 headersize; 120 u32 flags; 121 u32 imagesize; 122 } efi_capsule_header_t; 123 124 struct efi_boot_memmap { 125 efi_memory_desc_t **map; 126 unsigned long *map_size; 127 unsigned long *desc_size; 128 u32 *desc_ver; 129 unsigned long *key_ptr; 130 unsigned long *buff_size; 131 }; 132 133 /* 134 * EFI capsule flags 135 */ 136 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 137 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 138 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 139 140 /* 141 * Allocation types for calls to boottime->allocate_pages. 142 */ 143 #define EFI_ALLOCATE_ANY_PAGES 0 144 #define EFI_ALLOCATE_MAX_ADDRESS 1 145 #define EFI_ALLOCATE_ADDRESS 2 146 #define EFI_MAX_ALLOCATE_TYPE 3 147 148 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 149 150 /* 151 * Types and defines for Time Services 152 */ 153 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 154 #define EFI_TIME_IN_DAYLIGHT 0x2 155 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 156 157 typedef struct { 158 u16 year; 159 u8 month; 160 u8 day; 161 u8 hour; 162 u8 minute; 163 u8 second; 164 u8 pad1; 165 u32 nanosecond; 166 s16 timezone; 167 u8 daylight; 168 u8 pad2; 169 } efi_time_t; 170 171 typedef struct { 172 u32 resolution; 173 u32 accuracy; 174 u8 sets_to_zero; 175 } efi_time_cap_t; 176 177 typedef struct { 178 efi_table_hdr_t hdr; 179 u32 raise_tpl; 180 u32 restore_tpl; 181 u32 allocate_pages; 182 u32 free_pages; 183 u32 get_memory_map; 184 u32 allocate_pool; 185 u32 free_pool; 186 u32 create_event; 187 u32 set_timer; 188 u32 wait_for_event; 189 u32 signal_event; 190 u32 close_event; 191 u32 check_event; 192 u32 install_protocol_interface; 193 u32 reinstall_protocol_interface; 194 u32 uninstall_protocol_interface; 195 u32 handle_protocol; 196 u32 __reserved; 197 u32 register_protocol_notify; 198 u32 locate_handle; 199 u32 locate_device_path; 200 u32 install_configuration_table; 201 u32 load_image; 202 u32 start_image; 203 u32 exit; 204 u32 unload_image; 205 u32 exit_boot_services; 206 u32 get_next_monotonic_count; 207 u32 stall; 208 u32 set_watchdog_timer; 209 u32 connect_controller; 210 u32 disconnect_controller; 211 u32 open_protocol; 212 u32 close_protocol; 213 u32 open_protocol_information; 214 u32 protocols_per_handle; 215 u32 locate_handle_buffer; 216 u32 locate_protocol; 217 u32 install_multiple_protocol_interfaces; 218 u32 uninstall_multiple_protocol_interfaces; 219 u32 calculate_crc32; 220 u32 copy_mem; 221 u32 set_mem; 222 u32 create_event_ex; 223 } __packed efi_boot_services_32_t; 224 225 typedef struct { 226 efi_table_hdr_t hdr; 227 u64 raise_tpl; 228 u64 restore_tpl; 229 u64 allocate_pages; 230 u64 free_pages; 231 u64 get_memory_map; 232 u64 allocate_pool; 233 u64 free_pool; 234 u64 create_event; 235 u64 set_timer; 236 u64 wait_for_event; 237 u64 signal_event; 238 u64 close_event; 239 u64 check_event; 240 u64 install_protocol_interface; 241 u64 reinstall_protocol_interface; 242 u64 uninstall_protocol_interface; 243 u64 handle_protocol; 244 u64 __reserved; 245 u64 register_protocol_notify; 246 u64 locate_handle; 247 u64 locate_device_path; 248 u64 install_configuration_table; 249 u64 load_image; 250 u64 start_image; 251 u64 exit; 252 u64 unload_image; 253 u64 exit_boot_services; 254 u64 get_next_monotonic_count; 255 u64 stall; 256 u64 set_watchdog_timer; 257 u64 connect_controller; 258 u64 disconnect_controller; 259 u64 open_protocol; 260 u64 close_protocol; 261 u64 open_protocol_information; 262 u64 protocols_per_handle; 263 u64 locate_handle_buffer; 264 u64 locate_protocol; 265 u64 install_multiple_protocol_interfaces; 266 u64 uninstall_multiple_protocol_interfaces; 267 u64 calculate_crc32; 268 u64 copy_mem; 269 u64 set_mem; 270 u64 create_event_ex; 271 } __packed efi_boot_services_64_t; 272 273 /* 274 * EFI Boot Services table 275 */ 276 typedef struct { 277 efi_table_hdr_t hdr; 278 void *raise_tpl; 279 void *restore_tpl; 280 efi_status_t (*allocate_pages)(int, int, unsigned long, 281 efi_physical_addr_t *); 282 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 283 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 284 unsigned long *, u32 *); 285 efi_status_t (*allocate_pool)(int, unsigned long, void **); 286 efi_status_t (*free_pool)(void *); 287 void *create_event; 288 void *set_timer; 289 void *wait_for_event; 290 void *signal_event; 291 void *close_event; 292 void *check_event; 293 void *install_protocol_interface; 294 void *reinstall_protocol_interface; 295 void *uninstall_protocol_interface; 296 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 297 void *__reserved; 298 void *register_protocol_notify; 299 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 300 unsigned long *, efi_handle_t *); 301 void *locate_device_path; 302 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 303 void *load_image; 304 void *start_image; 305 void *exit; 306 void *unload_image; 307 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 308 void *get_next_monotonic_count; 309 void *stall; 310 void *set_watchdog_timer; 311 void *connect_controller; 312 void *disconnect_controller; 313 void *open_protocol; 314 void *close_protocol; 315 void *open_protocol_information; 316 void *protocols_per_handle; 317 void *locate_handle_buffer; 318 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 319 void *install_multiple_protocol_interfaces; 320 void *uninstall_multiple_protocol_interfaces; 321 void *calculate_crc32; 322 void *copy_mem; 323 void *set_mem; 324 void *create_event_ex; 325 } efi_boot_services_t; 326 327 typedef enum { 328 EfiPciIoWidthUint8, 329 EfiPciIoWidthUint16, 330 EfiPciIoWidthUint32, 331 EfiPciIoWidthUint64, 332 EfiPciIoWidthFifoUint8, 333 EfiPciIoWidthFifoUint16, 334 EfiPciIoWidthFifoUint32, 335 EfiPciIoWidthFifoUint64, 336 EfiPciIoWidthFillUint8, 337 EfiPciIoWidthFillUint16, 338 EfiPciIoWidthFillUint32, 339 EfiPciIoWidthFillUint64, 340 EfiPciIoWidthMaximum 341 } EFI_PCI_IO_PROTOCOL_WIDTH; 342 343 typedef enum { 344 EfiPciIoAttributeOperationGet, 345 EfiPciIoAttributeOperationSet, 346 EfiPciIoAttributeOperationEnable, 347 EfiPciIoAttributeOperationDisable, 348 EfiPciIoAttributeOperationSupported, 349 EfiPciIoAttributeOperationMaximum 350 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 351 352 typedef struct { 353 u32 read; 354 u32 write; 355 } efi_pci_io_protocol_access_32_t; 356 357 typedef struct { 358 u64 read; 359 u64 write; 360 } efi_pci_io_protocol_access_64_t; 361 362 typedef struct { 363 void *read; 364 void *write; 365 } efi_pci_io_protocol_access_t; 366 367 typedef struct { 368 u32 poll_mem; 369 u32 poll_io; 370 efi_pci_io_protocol_access_32_t mem; 371 efi_pci_io_protocol_access_32_t io; 372 efi_pci_io_protocol_access_32_t pci; 373 u32 copy_mem; 374 u32 map; 375 u32 unmap; 376 u32 allocate_buffer; 377 u32 free_buffer; 378 u32 flush; 379 u32 get_location; 380 u32 attributes; 381 u32 get_bar_attributes; 382 u32 set_bar_attributes; 383 uint64_t romsize; 384 void *romimage; 385 } efi_pci_io_protocol_32; 386 387 typedef struct { 388 u64 poll_mem; 389 u64 poll_io; 390 efi_pci_io_protocol_access_64_t mem; 391 efi_pci_io_protocol_access_64_t io; 392 efi_pci_io_protocol_access_64_t pci; 393 u64 copy_mem; 394 u64 map; 395 u64 unmap; 396 u64 allocate_buffer; 397 u64 free_buffer; 398 u64 flush; 399 u64 get_location; 400 u64 attributes; 401 u64 get_bar_attributes; 402 u64 set_bar_attributes; 403 uint64_t romsize; 404 void *romimage; 405 } efi_pci_io_protocol_64; 406 407 typedef struct { 408 void *poll_mem; 409 void *poll_io; 410 efi_pci_io_protocol_access_t mem; 411 efi_pci_io_protocol_access_t io; 412 efi_pci_io_protocol_access_t pci; 413 void *copy_mem; 414 void *map; 415 void *unmap; 416 void *allocate_buffer; 417 void *free_buffer; 418 void *flush; 419 void *get_location; 420 void *attributes; 421 void *get_bar_attributes; 422 void *set_bar_attributes; 423 uint64_t romsize; 424 void *romimage; 425 } efi_pci_io_protocol; 426 427 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 428 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 429 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 430 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 431 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 432 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 433 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 434 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 435 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 436 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 437 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 438 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 439 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 440 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 441 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 442 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 443 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 444 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 445 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 446 447 typedef struct { 448 u32 version; 449 u32 get; 450 u32 set; 451 u32 del; 452 u32 get_all; 453 } apple_properties_protocol_32_t; 454 455 typedef struct { 456 u64 version; 457 u64 get; 458 u64 set; 459 u64 del; 460 u64 get_all; 461 } apple_properties_protocol_64_t; 462 463 /* 464 * Types and defines for EFI ResetSystem 465 */ 466 #define EFI_RESET_COLD 0 467 #define EFI_RESET_WARM 1 468 #define EFI_RESET_SHUTDOWN 2 469 470 /* 471 * EFI Runtime Services table 472 */ 473 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 474 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 475 476 typedef struct { 477 efi_table_hdr_t hdr; 478 u32 get_time; 479 u32 set_time; 480 u32 get_wakeup_time; 481 u32 set_wakeup_time; 482 u32 set_virtual_address_map; 483 u32 convert_pointer; 484 u32 get_variable; 485 u32 get_next_variable; 486 u32 set_variable; 487 u32 get_next_high_mono_count; 488 u32 reset_system; 489 u32 update_capsule; 490 u32 query_capsule_caps; 491 u32 query_variable_info; 492 } efi_runtime_services_32_t; 493 494 typedef struct { 495 efi_table_hdr_t hdr; 496 u64 get_time; 497 u64 set_time; 498 u64 get_wakeup_time; 499 u64 set_wakeup_time; 500 u64 set_virtual_address_map; 501 u64 convert_pointer; 502 u64 get_variable; 503 u64 get_next_variable; 504 u64 set_variable; 505 u64 get_next_high_mono_count; 506 u64 reset_system; 507 u64 update_capsule; 508 u64 query_capsule_caps; 509 u64 query_variable_info; 510 } efi_runtime_services_64_t; 511 512 typedef struct { 513 efi_table_hdr_t hdr; 514 void *get_time; 515 void *set_time; 516 void *get_wakeup_time; 517 void *set_wakeup_time; 518 void *set_virtual_address_map; 519 void *convert_pointer; 520 void *get_variable; 521 void *get_next_variable; 522 void *set_variable; 523 void *get_next_high_mono_count; 524 void *reset_system; 525 void *update_capsule; 526 void *query_capsule_caps; 527 void *query_variable_info; 528 } efi_runtime_services_t; 529 530 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 531 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 532 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 533 efi_time_t *tm); 534 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 535 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 536 unsigned long *data_size, void *data); 537 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 538 efi_guid_t *vendor); 539 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 540 u32 attr, unsigned long data_size, 541 void *data); 542 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 543 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 544 unsigned long data_size, efi_char16_t *data); 545 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 546 unsigned long descriptor_size, 547 u32 descriptor_version, 548 efi_memory_desc_t *virtual_map); 549 typedef efi_status_t efi_query_variable_info_t(u32 attr, 550 u64 *storage_space, 551 u64 *remaining_space, 552 u64 *max_variable_size); 553 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 554 unsigned long count, 555 unsigned long sg_list); 556 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 557 unsigned long count, 558 u64 *max_size, 559 int *reset_type); 560 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 561 unsigned long size, 562 bool nonblocking); 563 564 void efi_native_runtime_setup(void); 565 566 /* 567 * EFI Configuration Table and GUID definitions 568 * 569 * These are all defined in a single line to make them easier to 570 * grep for and to see them at a glance - while still having a 571 * similar structure to the definitions in the spec. 572 * 573 * Here's how they are structured: 574 * 575 * GUID: 12345678-1234-1234-1234-123456789012 576 * Spec: 577 * #define EFI_SOME_PROTOCOL_GUID \ 578 * {0x12345678,0x1234,0x1234,\ 579 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} 580 * Here: 581 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) 582 * ^ tabs ^extra space 583 * 584 * Note that the 'extra space' separates the values at the same place 585 * where the UEFI SPEC breaks the line. 586 */ 587 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 588 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 589 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 590 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 591 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 592 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 593 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 594 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 595 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 596 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 597 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 598 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 599 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 600 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 601 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 602 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 603 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 604 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 605 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 606 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 607 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 608 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 609 #define EFI_RNG_ALGORITHM_RAW EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61) 610 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 611 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 612 #define APPLE_PROPERTIES_PROTOCOL_GUID EFI_GUID(0x91bd12fe, 0xf6c3, 0x44fb, 0xa5, 0xb7, 0x51, 0x22, 0xab, 0x30, 0x3a, 0xe0) 613 614 /* 615 * This GUID is used to pass to the kernel proper the struct screen_info 616 * structure that was populated by the stub based on the GOP protocol instance 617 * associated with ConOut 618 */ 619 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 620 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 621 #define LINUX_EFI_RANDOM_SEED_TABLE_GUID EFI_GUID(0x1ce1e5bc, 0x7ceb, 0x42f2, 0x81, 0xe5, 0x8a, 0xad, 0xf1, 0x80, 0xf5, 0x7b) 622 623 typedef struct { 624 efi_guid_t guid; 625 u64 table; 626 } efi_config_table_64_t; 627 628 typedef struct { 629 efi_guid_t guid; 630 u32 table; 631 } efi_config_table_32_t; 632 633 typedef struct { 634 efi_guid_t guid; 635 unsigned long table; 636 } efi_config_table_t; 637 638 typedef struct { 639 efi_guid_t guid; 640 const char *name; 641 unsigned long *ptr; 642 } efi_config_table_type_t; 643 644 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 645 646 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 647 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 648 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 649 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 650 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 651 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 652 653 typedef struct { 654 efi_table_hdr_t hdr; 655 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 656 u32 fw_revision; 657 u32 __pad1; 658 u64 con_in_handle; 659 u64 con_in; 660 u64 con_out_handle; 661 u64 con_out; 662 u64 stderr_handle; 663 u64 stderr; 664 u64 runtime; 665 u64 boottime; 666 u32 nr_tables; 667 u32 __pad2; 668 u64 tables; 669 } efi_system_table_64_t; 670 671 typedef struct { 672 efi_table_hdr_t hdr; 673 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 674 u32 fw_revision; 675 u32 con_in_handle; 676 u32 con_in; 677 u32 con_out_handle; 678 u32 con_out; 679 u32 stderr_handle; 680 u32 stderr; 681 u32 runtime; 682 u32 boottime; 683 u32 nr_tables; 684 u32 tables; 685 } efi_system_table_32_t; 686 687 typedef struct { 688 efi_table_hdr_t hdr; 689 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 690 u32 fw_revision; 691 unsigned long con_in_handle; 692 unsigned long con_in; 693 unsigned long con_out_handle; 694 unsigned long con_out; 695 unsigned long stderr_handle; 696 unsigned long stderr; 697 efi_runtime_services_t *runtime; 698 efi_boot_services_t *boottime; 699 unsigned long nr_tables; 700 unsigned long tables; 701 } efi_system_table_t; 702 703 /* 704 * Architecture independent structure for describing a memory map for the 705 * benefit of efi_memmap_init_early(), saving us the need to pass four 706 * parameters. 707 */ 708 struct efi_memory_map_data { 709 phys_addr_t phys_map; 710 unsigned long size; 711 unsigned long desc_version; 712 unsigned long desc_size; 713 }; 714 715 struct efi_memory_map { 716 phys_addr_t phys_map; 717 void *map; 718 void *map_end; 719 int nr_map; 720 unsigned long desc_version; 721 unsigned long desc_size; 722 bool late; 723 }; 724 725 struct efi_mem_range { 726 struct range range; 727 u64 attribute; 728 }; 729 730 struct efi_fdt_params { 731 u64 system_table; 732 u64 mmap; 733 u32 mmap_size; 734 u32 desc_size; 735 u32 desc_ver; 736 }; 737 738 typedef struct { 739 u32 revision; 740 u32 parent_handle; 741 u32 system_table; 742 u32 device_handle; 743 u32 file_path; 744 u32 reserved; 745 u32 load_options_size; 746 u32 load_options; 747 u32 image_base; 748 __aligned_u64 image_size; 749 unsigned int image_code_type; 750 unsigned int image_data_type; 751 unsigned long unload; 752 } efi_loaded_image_32_t; 753 754 typedef struct { 755 u32 revision; 756 u64 parent_handle; 757 u64 system_table; 758 u64 device_handle; 759 u64 file_path; 760 u64 reserved; 761 u32 load_options_size; 762 u64 load_options; 763 u64 image_base; 764 __aligned_u64 image_size; 765 unsigned int image_code_type; 766 unsigned int image_data_type; 767 unsigned long unload; 768 } efi_loaded_image_64_t; 769 770 typedef struct { 771 u32 revision; 772 void *parent_handle; 773 efi_system_table_t *system_table; 774 void *device_handle; 775 void *file_path; 776 void *reserved; 777 u32 load_options_size; 778 void *load_options; 779 void *image_base; 780 __aligned_u64 image_size; 781 unsigned int image_code_type; 782 unsigned int image_data_type; 783 unsigned long unload; 784 } efi_loaded_image_t; 785 786 787 typedef struct { 788 u64 size; 789 u64 file_size; 790 u64 phys_size; 791 efi_time_t create_time; 792 efi_time_t last_access_time; 793 efi_time_t modification_time; 794 __aligned_u64 attribute; 795 efi_char16_t filename[1]; 796 } efi_file_info_t; 797 798 typedef struct { 799 u64 revision; 800 u32 open; 801 u32 close; 802 u32 delete; 803 u32 read; 804 u32 write; 805 u32 get_position; 806 u32 set_position; 807 u32 get_info; 808 u32 set_info; 809 u32 flush; 810 } efi_file_handle_32_t; 811 812 typedef struct { 813 u64 revision; 814 u64 open; 815 u64 close; 816 u64 delete; 817 u64 read; 818 u64 write; 819 u64 get_position; 820 u64 set_position; 821 u64 get_info; 822 u64 set_info; 823 u64 flush; 824 } efi_file_handle_64_t; 825 826 typedef struct _efi_file_handle { 827 u64 revision; 828 efi_status_t (*open)(struct _efi_file_handle *, 829 struct _efi_file_handle **, 830 efi_char16_t *, u64, u64); 831 efi_status_t (*close)(struct _efi_file_handle *); 832 void *delete; 833 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 834 void *); 835 void *write; 836 void *get_position; 837 void *set_position; 838 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 839 unsigned long *, void *); 840 void *set_info; 841 void *flush; 842 } efi_file_handle_t; 843 844 typedef struct _efi_file_io_interface { 845 u64 revision; 846 int (*open_volume)(struct _efi_file_io_interface *, 847 efi_file_handle_t **); 848 } efi_file_io_interface_t; 849 850 #define EFI_FILE_MODE_READ 0x0000000000000001 851 #define EFI_FILE_MODE_WRITE 0x0000000000000002 852 #define EFI_FILE_MODE_CREATE 0x8000000000000000 853 854 typedef struct { 855 u32 version; 856 u32 length; 857 u64 memory_protection_attribute; 858 } efi_properties_table_t; 859 860 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 861 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 862 863 #define EFI_INVALID_TABLE_ADDR (~0UL) 864 865 typedef struct { 866 u32 version; 867 u32 num_entries; 868 u32 desc_size; 869 u32 reserved; 870 efi_memory_desc_t entry[0]; 871 } efi_memory_attributes_table_t; 872 873 /* 874 * All runtime access to EFI goes through this structure: 875 */ 876 extern struct efi { 877 efi_system_table_t *systab; /* EFI system table */ 878 unsigned int runtime_version; /* Runtime services version */ 879 unsigned long mps; /* MPS table */ 880 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 881 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 882 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 883 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 884 unsigned long sal_systab; /* SAL system table */ 885 unsigned long boot_info; /* boot info table */ 886 unsigned long hcdp; /* HCDP table */ 887 unsigned long uga; /* UGA table */ 888 unsigned long uv_systab; /* UV system table */ 889 unsigned long fw_vendor; /* fw_vendor */ 890 unsigned long runtime; /* runtime table */ 891 unsigned long config_table; /* config tables */ 892 unsigned long esrt; /* ESRT table */ 893 unsigned long properties_table; /* properties table */ 894 unsigned long mem_attr_table; /* memory attributes table */ 895 unsigned long rng_seed; /* UEFI firmware random seed */ 896 efi_get_time_t *get_time; 897 efi_set_time_t *set_time; 898 efi_get_wakeup_time_t *get_wakeup_time; 899 efi_set_wakeup_time_t *set_wakeup_time; 900 efi_get_variable_t *get_variable; 901 efi_get_next_variable_t *get_next_variable; 902 efi_set_variable_t *set_variable; 903 efi_set_variable_t *set_variable_nonblocking; 904 efi_query_variable_info_t *query_variable_info; 905 efi_query_variable_info_t *query_variable_info_nonblocking; 906 efi_update_capsule_t *update_capsule; 907 efi_query_capsule_caps_t *query_capsule_caps; 908 efi_get_next_high_mono_count_t *get_next_high_mono_count; 909 efi_reset_system_t *reset_system; 910 efi_set_virtual_address_map_t *set_virtual_address_map; 911 struct efi_memory_map memmap; 912 unsigned long flags; 913 } efi; 914 915 static inline int 916 efi_guidcmp (efi_guid_t left, efi_guid_t right) 917 { 918 return memcmp(&left, &right, sizeof (efi_guid_t)); 919 } 920 921 static inline char * 922 efi_guid_to_str(efi_guid_t *guid, char *out) 923 { 924 sprintf(out, "%pUl", guid->b); 925 return out; 926 } 927 928 extern void efi_init (void); 929 extern void *efi_get_pal_addr (void); 930 extern void efi_map_pal_code (void); 931 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 932 extern void efi_gettimeofday (struct timespec64 *ts); 933 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 934 #ifdef CONFIG_X86 935 extern void efi_late_init(void); 936 extern void efi_free_boot_services(void); 937 extern efi_status_t efi_query_variable_store(u32 attributes, 938 unsigned long size, 939 bool nonblocking); 940 extern void efi_find_mirror(void); 941 #else 942 static inline void efi_late_init(void) {} 943 static inline void efi_free_boot_services(void) {} 944 945 static inline efi_status_t efi_query_variable_store(u32 attributes, 946 unsigned long size, 947 bool nonblocking) 948 { 949 return EFI_SUCCESS; 950 } 951 #endif 952 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 953 954 extern phys_addr_t __init efi_memmap_alloc(unsigned int num_entries); 955 extern int __init efi_memmap_init_early(struct efi_memory_map_data *data); 956 extern int __init efi_memmap_init_late(phys_addr_t addr, unsigned long size); 957 extern void __init efi_memmap_unmap(void); 958 extern int __init efi_memmap_install(phys_addr_t addr, unsigned int nr_map); 959 extern int __init efi_memmap_split_count(efi_memory_desc_t *md, 960 struct range *range); 961 extern void __init efi_memmap_insert(struct efi_memory_map *old_memmap, 962 void *buf, struct efi_mem_range *mem); 963 964 extern int efi_config_init(efi_config_table_type_t *arch_tables); 965 #ifdef CONFIG_EFI_ESRT 966 extern void __init efi_esrt_init(void); 967 #else 968 static inline void efi_esrt_init(void) { } 969 #endif 970 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 971 efi_config_table_type_t *arch_tables); 972 extern u64 efi_get_iobase (void); 973 extern u32 efi_mem_type (unsigned long phys_addr); 974 extern u64 efi_mem_attributes (unsigned long phys_addr); 975 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 976 extern int __init efi_uart_console_only (void); 977 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 978 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 979 extern void efi_mem_reserve(phys_addr_t addr, u64 size); 980 extern void efi_initialize_iomem_resources(struct resource *code_resource, 981 struct resource *data_resource, struct resource *bss_resource); 982 extern void efi_reserve_boot_services(void); 983 extern int efi_get_fdt_params(struct efi_fdt_params *params); 984 extern struct kobject *efi_kobj; 985 986 extern int efi_reboot_quirk_mode; 987 extern bool efi_poweroff_required(void); 988 989 #ifdef CONFIG_EFI_FAKE_MEMMAP 990 extern void __init efi_fake_memmap(void); 991 #else 992 static inline void efi_fake_memmap(void) { } 993 #endif 994 995 /* 996 * efi_memattr_perm_setter - arch specific callback function passed into 997 * efi_memattr_apply_permissions() that updates the 998 * mapping permissions described by the second 999 * argument in the page tables referred to by the 1000 * first argument. 1001 */ 1002 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 1003 1004 extern int efi_memattr_init(void); 1005 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 1006 efi_memattr_perm_setter fn); 1007 1008 /* Iterate through an efi_memory_map */ 1009 #define for_each_efi_memory_desc_in_map(m, md) \ 1010 for ((md) = (m)->map; \ 1011 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ 1012 (md) = (void *)(md) + (m)->desc_size) 1013 1014 /** 1015 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 1016 * @md: the efi_memory_desc_t * iterator 1017 * 1018 * Once the loop finishes @md must not be accessed. 1019 */ 1020 #define for_each_efi_memory_desc(md) \ 1021 for_each_efi_memory_desc_in_map(&efi.memmap, md) 1022 1023 /* 1024 * Format an EFI memory descriptor's type and attributes to a user-provided 1025 * character buffer, as per snprintf(), and return the buffer. 1026 */ 1027 char * __init efi_md_typeattr_format(char *buf, size_t size, 1028 const efi_memory_desc_t *md); 1029 1030 /** 1031 * efi_range_is_wc - check the WC bit on an address range 1032 * @start: starting kvirt address 1033 * @len: length of range 1034 * 1035 * Consult the EFI memory map and make sure it's ok to set this range WC. 1036 * Returns true or false. 1037 */ 1038 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 1039 { 1040 unsigned long i; 1041 1042 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 1043 unsigned long paddr = __pa(start + i); 1044 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 1045 return 0; 1046 } 1047 /* The range checked out */ 1048 return 1; 1049 } 1050 1051 #ifdef CONFIG_EFI_PCDP 1052 extern int __init efi_setup_pcdp_console(char *); 1053 #endif 1054 1055 /* 1056 * We play games with efi_enabled so that the compiler will, if 1057 * possible, remove EFI-related code altogether. 1058 */ 1059 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1060 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1061 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1062 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1063 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1064 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1065 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1066 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1067 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1068 1069 #ifdef CONFIG_EFI 1070 /* 1071 * Test whether the above EFI_* bits are enabled. 1072 */ 1073 static inline bool efi_enabled(int feature) 1074 { 1075 return test_bit(feature, &efi.flags) != 0; 1076 } 1077 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1078 #else 1079 static inline bool efi_enabled(int feature) 1080 { 1081 return false; 1082 } 1083 static inline void 1084 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1085 1086 static inline bool 1087 efi_capsule_pending(int *reset_type) 1088 { 1089 return false; 1090 } 1091 #endif 1092 1093 extern int efi_status_to_err(efi_status_t status); 1094 1095 /* 1096 * Variable Attributes 1097 */ 1098 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1099 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1100 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1101 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1102 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1103 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1104 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1105 1106 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1107 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1108 EFI_VARIABLE_RUNTIME_ACCESS | \ 1109 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1110 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1111 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1112 EFI_VARIABLE_APPEND_WRITE) 1113 /* 1114 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1115 * not including trailing NUL 1116 */ 1117 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN 1118 1119 /* 1120 * The type of search to perform when calling boottime->locate_handle 1121 */ 1122 #define EFI_LOCATE_ALL_HANDLES 0 1123 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1124 #define EFI_LOCATE_BY_PROTOCOL 2 1125 1126 /* 1127 * EFI Device Path information 1128 */ 1129 #define EFI_DEV_HW 0x01 1130 #define EFI_DEV_PCI 1 1131 #define EFI_DEV_PCCARD 2 1132 #define EFI_DEV_MEM_MAPPED 3 1133 #define EFI_DEV_VENDOR 4 1134 #define EFI_DEV_CONTROLLER 5 1135 #define EFI_DEV_ACPI 0x02 1136 #define EFI_DEV_BASIC_ACPI 1 1137 #define EFI_DEV_EXPANDED_ACPI 2 1138 #define EFI_DEV_MSG 0x03 1139 #define EFI_DEV_MSG_ATAPI 1 1140 #define EFI_DEV_MSG_SCSI 2 1141 #define EFI_DEV_MSG_FC 3 1142 #define EFI_DEV_MSG_1394 4 1143 #define EFI_DEV_MSG_USB 5 1144 #define EFI_DEV_MSG_USB_CLASS 15 1145 #define EFI_DEV_MSG_I20 6 1146 #define EFI_DEV_MSG_MAC 11 1147 #define EFI_DEV_MSG_IPV4 12 1148 #define EFI_DEV_MSG_IPV6 13 1149 #define EFI_DEV_MSG_INFINIBAND 9 1150 #define EFI_DEV_MSG_UART 14 1151 #define EFI_DEV_MSG_VENDOR 10 1152 #define EFI_DEV_MEDIA 0x04 1153 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1154 #define EFI_DEV_MEDIA_CDROM 2 1155 #define EFI_DEV_MEDIA_VENDOR 3 1156 #define EFI_DEV_MEDIA_FILE 4 1157 #define EFI_DEV_MEDIA_PROTOCOL 5 1158 #define EFI_DEV_BIOS_BOOT 0x05 1159 #define EFI_DEV_END_PATH 0x7F 1160 #define EFI_DEV_END_PATH2 0xFF 1161 #define EFI_DEV_END_INSTANCE 0x01 1162 #define EFI_DEV_END_ENTIRE 0xFF 1163 1164 struct efi_generic_dev_path { 1165 u8 type; 1166 u8 sub_type; 1167 u16 length; 1168 } __attribute ((packed)); 1169 1170 struct efi_dev_path { 1171 u8 type; /* can be replaced with unnamed */ 1172 u8 sub_type; /* struct efi_generic_dev_path; */ 1173 u16 length; /* once we've moved to -std=c11 */ 1174 union { 1175 struct { 1176 u32 hid; 1177 u32 uid; 1178 } acpi; 1179 struct { 1180 u8 fn; 1181 u8 dev; 1182 } pci; 1183 }; 1184 } __attribute ((packed)); 1185 1186 #if IS_ENABLED(CONFIG_EFI_DEV_PATH_PARSER) 1187 struct device *efi_get_device_by_path(struct efi_dev_path **node, size_t *len); 1188 #endif 1189 1190 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1191 { 1192 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1193 *addr &= PAGE_MASK; 1194 } 1195 1196 /* 1197 * EFI Variable support. 1198 * 1199 * Different firmware drivers can expose their EFI-like variables using 1200 * the following. 1201 */ 1202 1203 struct efivar_operations { 1204 efi_get_variable_t *get_variable; 1205 efi_get_next_variable_t *get_next_variable; 1206 efi_set_variable_t *set_variable; 1207 efi_set_variable_t *set_variable_nonblocking; 1208 efi_query_variable_store_t *query_variable_store; 1209 }; 1210 1211 struct efivars { 1212 struct kset *kset; 1213 struct kobject *kobject; 1214 const struct efivar_operations *ops; 1215 }; 1216 1217 /* 1218 * The maximum size of VariableName + Data = 1024 1219 * Therefore, it's reasonable to save that much 1220 * space in each part of the structure, 1221 * and we use a page for reading/writing. 1222 */ 1223 1224 #define EFI_VAR_NAME_LEN 1024 1225 1226 struct efi_variable { 1227 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1228 efi_guid_t VendorGuid; 1229 unsigned long DataSize; 1230 __u8 Data[1024]; 1231 efi_status_t Status; 1232 __u32 Attributes; 1233 } __attribute__((packed)); 1234 1235 struct efivar_entry { 1236 struct efi_variable var; 1237 struct list_head list; 1238 struct kobject kobj; 1239 bool scanning; 1240 bool deleting; 1241 }; 1242 1243 struct efi_simple_text_output_protocol_32 { 1244 u32 reset; 1245 u32 output_string; 1246 u32 test_string; 1247 }; 1248 1249 struct efi_simple_text_output_protocol_64 { 1250 u64 reset; 1251 u64 output_string; 1252 u64 test_string; 1253 }; 1254 1255 struct efi_simple_text_output_protocol { 1256 void *reset; 1257 efi_status_t (*output_string)(void *, void *); 1258 void *test_string; 1259 }; 1260 1261 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1262 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1263 #define PIXEL_BIT_MASK 2 1264 #define PIXEL_BLT_ONLY 3 1265 #define PIXEL_FORMAT_MAX 4 1266 1267 struct efi_pixel_bitmask { 1268 u32 red_mask; 1269 u32 green_mask; 1270 u32 blue_mask; 1271 u32 reserved_mask; 1272 }; 1273 1274 struct efi_graphics_output_mode_info { 1275 u32 version; 1276 u32 horizontal_resolution; 1277 u32 vertical_resolution; 1278 int pixel_format; 1279 struct efi_pixel_bitmask pixel_information; 1280 u32 pixels_per_scan_line; 1281 } __packed; 1282 1283 struct efi_graphics_output_protocol_mode_32 { 1284 u32 max_mode; 1285 u32 mode; 1286 u32 info; 1287 u32 size_of_info; 1288 u64 frame_buffer_base; 1289 u32 frame_buffer_size; 1290 } __packed; 1291 1292 struct efi_graphics_output_protocol_mode_64 { 1293 u32 max_mode; 1294 u32 mode; 1295 u64 info; 1296 u64 size_of_info; 1297 u64 frame_buffer_base; 1298 u64 frame_buffer_size; 1299 } __packed; 1300 1301 struct efi_graphics_output_protocol_mode { 1302 u32 max_mode; 1303 u32 mode; 1304 unsigned long info; 1305 unsigned long size_of_info; 1306 u64 frame_buffer_base; 1307 unsigned long frame_buffer_size; 1308 } __packed; 1309 1310 struct efi_graphics_output_protocol_32 { 1311 u32 query_mode; 1312 u32 set_mode; 1313 u32 blt; 1314 u32 mode; 1315 }; 1316 1317 struct efi_graphics_output_protocol_64 { 1318 u64 query_mode; 1319 u64 set_mode; 1320 u64 blt; 1321 u64 mode; 1322 }; 1323 1324 struct efi_graphics_output_protocol { 1325 unsigned long query_mode; 1326 unsigned long set_mode; 1327 unsigned long blt; 1328 struct efi_graphics_output_protocol_mode *mode; 1329 }; 1330 1331 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1332 struct efi_graphics_output_protocol *, u32, unsigned long *, 1333 struct efi_graphics_output_mode_info **); 1334 1335 extern struct list_head efivar_sysfs_list; 1336 1337 static inline void 1338 efivar_unregister(struct efivar_entry *var) 1339 { 1340 kobject_put(&var->kobj); 1341 } 1342 1343 int efivars_register(struct efivars *efivars, 1344 const struct efivar_operations *ops, 1345 struct kobject *kobject); 1346 int efivars_unregister(struct efivars *efivars); 1347 struct kobject *efivars_kobject(void); 1348 1349 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1350 void *data, bool duplicates, struct list_head *head); 1351 1352 int efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1353 int efivar_entry_remove(struct efivar_entry *entry); 1354 1355 int __efivar_entry_delete(struct efivar_entry *entry); 1356 int efivar_entry_delete(struct efivar_entry *entry); 1357 1358 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1359 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1360 unsigned long *size, void *data); 1361 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1362 unsigned long *size, void *data); 1363 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1364 unsigned long size, void *data, struct list_head *head); 1365 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1366 unsigned long *size, void *data, bool *set); 1367 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1368 bool block, unsigned long size, void *data); 1369 1370 int efivar_entry_iter_begin(void); 1371 void efivar_entry_iter_end(void); 1372 1373 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1374 struct list_head *head, void *data, 1375 struct efivar_entry **prev); 1376 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1377 struct list_head *head, void *data); 1378 1379 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1380 struct list_head *head, bool remove); 1381 1382 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1383 unsigned long data_size); 1384 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1385 size_t len); 1386 1387 extern struct work_struct efivar_work; 1388 void efivar_run_worker(void); 1389 1390 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1391 int efivars_sysfs_init(void); 1392 1393 #define EFIVARS_DATA_SIZE_MAX 1024 1394 1395 #endif /* CONFIG_EFI_VARS */ 1396 extern bool efi_capsule_pending(int *reset_type); 1397 1398 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1399 size_t size, int *reset); 1400 1401 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1402 struct page **pages); 1403 1404 #ifdef CONFIG_EFI_RUNTIME_MAP 1405 int efi_runtime_map_init(struct kobject *); 1406 int efi_get_runtime_map_size(void); 1407 int efi_get_runtime_map_desc_size(void); 1408 int efi_runtime_map_copy(void *buf, size_t bufsz); 1409 #else 1410 static inline int efi_runtime_map_init(struct kobject *kobj) 1411 { 1412 return 0; 1413 } 1414 1415 static inline int efi_get_runtime_map_size(void) 1416 { 1417 return 0; 1418 } 1419 1420 static inline int efi_get_runtime_map_desc_size(void) 1421 { 1422 return 0; 1423 } 1424 1425 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1426 { 1427 return 0; 1428 } 1429 1430 #endif 1431 1432 /* prototypes shared between arch specific and generic stub code */ 1433 1434 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1435 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1436 1437 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1438 1439 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1440 unsigned long addr); 1441 1442 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1443 efi_loaded_image_t *image, int *cmd_line_len); 1444 1445 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1446 struct efi_boot_memmap *map); 1447 1448 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1449 unsigned long size, unsigned long align, 1450 unsigned long *addr); 1451 1452 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1453 unsigned long size, unsigned long align, 1454 unsigned long *addr, unsigned long max); 1455 1456 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1457 unsigned long *image_addr, 1458 unsigned long image_size, 1459 unsigned long alloc_size, 1460 unsigned long preferred_addr, 1461 unsigned long alignment); 1462 1463 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1464 efi_loaded_image_t *image, 1465 char *cmd_line, char *option_string, 1466 unsigned long max_addr, 1467 unsigned long *load_addr, 1468 unsigned long *load_size); 1469 1470 efi_status_t efi_parse_options(char *cmdline); 1471 1472 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1473 struct screen_info *si, efi_guid_t *proto, 1474 unsigned long size); 1475 1476 bool efi_runtime_disabled(void); 1477 extern void efi_call_virt_check_flags(unsigned long flags, const char *call); 1478 1479 /* 1480 * Arch code can implement the following three template macros, avoiding 1481 * reptition for the void/non-void return cases of {__,}efi_call_virt(): 1482 * 1483 * * arch_efi_call_virt_setup() 1484 * 1485 * Sets up the environment for the call (e.g. switching page tables, 1486 * allowing kernel-mode use of floating point, if required). 1487 * 1488 * * arch_efi_call_virt() 1489 * 1490 * Performs the call. The last expression in the macro must be the call 1491 * itself, allowing the logic to be shared by the void and non-void 1492 * cases. 1493 * 1494 * * arch_efi_call_virt_teardown() 1495 * 1496 * Restores the usual kernel environment once the call has returned. 1497 */ 1498 1499 #define efi_call_virt_pointer(p, f, args...) \ 1500 ({ \ 1501 efi_status_t __s; \ 1502 unsigned long __flags; \ 1503 \ 1504 arch_efi_call_virt_setup(); \ 1505 \ 1506 local_save_flags(__flags); \ 1507 __s = arch_efi_call_virt(p, f, args); \ 1508 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1509 \ 1510 arch_efi_call_virt_teardown(); \ 1511 \ 1512 __s; \ 1513 }) 1514 1515 #define __efi_call_virt_pointer(p, f, args...) \ 1516 ({ \ 1517 unsigned long __flags; \ 1518 \ 1519 arch_efi_call_virt_setup(); \ 1520 \ 1521 local_save_flags(__flags); \ 1522 arch_efi_call_virt(p, f, args); \ 1523 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1524 \ 1525 arch_efi_call_virt_teardown(); \ 1526 }) 1527 1528 typedef efi_status_t (*efi_exit_boot_map_processing)( 1529 efi_system_table_t *sys_table_arg, 1530 struct efi_boot_memmap *map, 1531 void *priv); 1532 1533 efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, 1534 void *handle, 1535 struct efi_boot_memmap *map, 1536 void *priv, 1537 efi_exit_boot_map_processing priv_func); 1538 1539 struct linux_efi_random_seed { 1540 u32 size; 1541 u8 bits[]; 1542 }; 1543 1544 #endif /* _LINUX_EFI_H */ 1545