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/reboot.h> 24 #include <linux/uuid.h> 25 #include <linux/screen_info.h> 26 27 #include <asm/page.h> 28 29 #define EFI_SUCCESS 0 30 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 31 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 32 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 39 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 40 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 41 42 typedef unsigned long efi_status_t; 43 typedef u8 efi_bool_t; 44 typedef u16 efi_char16_t; /* UNICODE character */ 45 typedef u64 efi_physical_addr_t; 46 typedef void *efi_handle_t; 47 48 typedef uuid_le efi_guid_t; 49 50 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 51 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) 52 53 /* 54 * Generic EFI table header 55 */ 56 typedef struct { 57 u64 signature; 58 u32 revision; 59 u32 headersize; 60 u32 crc32; 61 u32 reserved; 62 } efi_table_hdr_t; 63 64 /* 65 * Memory map descriptor: 66 */ 67 68 /* Memory types: */ 69 #define EFI_RESERVED_TYPE 0 70 #define EFI_LOADER_CODE 1 71 #define EFI_LOADER_DATA 2 72 #define EFI_BOOT_SERVICES_CODE 3 73 #define EFI_BOOT_SERVICES_DATA 4 74 #define EFI_RUNTIME_SERVICES_CODE 5 75 #define EFI_RUNTIME_SERVICES_DATA 6 76 #define EFI_CONVENTIONAL_MEMORY 7 77 #define EFI_UNUSABLE_MEMORY 8 78 #define EFI_ACPI_RECLAIM_MEMORY 9 79 #define EFI_ACPI_MEMORY_NVS 10 80 #define EFI_MEMORY_MAPPED_IO 11 81 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 82 #define EFI_PAL_CODE 13 83 #define EFI_PERSISTENT_MEMORY 14 84 #define EFI_MAX_MEMORY_TYPE 15 85 86 /* Attribute values: */ 87 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 88 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 89 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 90 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 91 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 92 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 93 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 94 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 95 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 96 #define EFI_MEMORY_MORE_RELIABLE \ 97 ((u64)0x0000000000010000ULL) /* higher reliability */ 98 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 99 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 100 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 101 102 #define EFI_PAGE_SHIFT 12 103 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 104 105 typedef struct { 106 u32 type; 107 u32 pad; 108 u64 phys_addr; 109 u64 virt_addr; 110 u64 num_pages; 111 u64 attribute; 112 } efi_memory_desc_t; 113 114 typedef struct { 115 efi_guid_t guid; 116 u32 headersize; 117 u32 flags; 118 u32 imagesize; 119 } efi_capsule_header_t; 120 121 /* 122 * EFI capsule flags 123 */ 124 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 125 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 126 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 127 128 /* 129 * Allocation types for calls to boottime->allocate_pages. 130 */ 131 #define EFI_ALLOCATE_ANY_PAGES 0 132 #define EFI_ALLOCATE_MAX_ADDRESS 1 133 #define EFI_ALLOCATE_ADDRESS 2 134 #define EFI_MAX_ALLOCATE_TYPE 3 135 136 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 137 138 /* 139 * Types and defines for Time Services 140 */ 141 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 142 #define EFI_TIME_IN_DAYLIGHT 0x2 143 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 144 145 typedef struct { 146 u16 year; 147 u8 month; 148 u8 day; 149 u8 hour; 150 u8 minute; 151 u8 second; 152 u8 pad1; 153 u32 nanosecond; 154 s16 timezone; 155 u8 daylight; 156 u8 pad2; 157 } efi_time_t; 158 159 typedef struct { 160 u32 resolution; 161 u32 accuracy; 162 u8 sets_to_zero; 163 } efi_time_cap_t; 164 165 typedef struct { 166 efi_table_hdr_t hdr; 167 u32 raise_tpl; 168 u32 restore_tpl; 169 u32 allocate_pages; 170 u32 free_pages; 171 u32 get_memory_map; 172 u32 allocate_pool; 173 u32 free_pool; 174 u32 create_event; 175 u32 set_timer; 176 u32 wait_for_event; 177 u32 signal_event; 178 u32 close_event; 179 u32 check_event; 180 u32 install_protocol_interface; 181 u32 reinstall_protocol_interface; 182 u32 uninstall_protocol_interface; 183 u32 handle_protocol; 184 u32 __reserved; 185 u32 register_protocol_notify; 186 u32 locate_handle; 187 u32 locate_device_path; 188 u32 install_configuration_table; 189 u32 load_image; 190 u32 start_image; 191 u32 exit; 192 u32 unload_image; 193 u32 exit_boot_services; 194 u32 get_next_monotonic_count; 195 u32 stall; 196 u32 set_watchdog_timer; 197 u32 connect_controller; 198 u32 disconnect_controller; 199 u32 open_protocol; 200 u32 close_protocol; 201 u32 open_protocol_information; 202 u32 protocols_per_handle; 203 u32 locate_handle_buffer; 204 u32 locate_protocol; 205 u32 install_multiple_protocol_interfaces; 206 u32 uninstall_multiple_protocol_interfaces; 207 u32 calculate_crc32; 208 u32 copy_mem; 209 u32 set_mem; 210 u32 create_event_ex; 211 } __packed efi_boot_services_32_t; 212 213 typedef struct { 214 efi_table_hdr_t hdr; 215 u64 raise_tpl; 216 u64 restore_tpl; 217 u64 allocate_pages; 218 u64 free_pages; 219 u64 get_memory_map; 220 u64 allocate_pool; 221 u64 free_pool; 222 u64 create_event; 223 u64 set_timer; 224 u64 wait_for_event; 225 u64 signal_event; 226 u64 close_event; 227 u64 check_event; 228 u64 install_protocol_interface; 229 u64 reinstall_protocol_interface; 230 u64 uninstall_protocol_interface; 231 u64 handle_protocol; 232 u64 __reserved; 233 u64 register_protocol_notify; 234 u64 locate_handle; 235 u64 locate_device_path; 236 u64 install_configuration_table; 237 u64 load_image; 238 u64 start_image; 239 u64 exit; 240 u64 unload_image; 241 u64 exit_boot_services; 242 u64 get_next_monotonic_count; 243 u64 stall; 244 u64 set_watchdog_timer; 245 u64 connect_controller; 246 u64 disconnect_controller; 247 u64 open_protocol; 248 u64 close_protocol; 249 u64 open_protocol_information; 250 u64 protocols_per_handle; 251 u64 locate_handle_buffer; 252 u64 locate_protocol; 253 u64 install_multiple_protocol_interfaces; 254 u64 uninstall_multiple_protocol_interfaces; 255 u64 calculate_crc32; 256 u64 copy_mem; 257 u64 set_mem; 258 u64 create_event_ex; 259 } __packed efi_boot_services_64_t; 260 261 /* 262 * EFI Boot Services table 263 */ 264 typedef struct { 265 efi_table_hdr_t hdr; 266 void *raise_tpl; 267 void *restore_tpl; 268 efi_status_t (*allocate_pages)(int, int, unsigned long, 269 efi_physical_addr_t *); 270 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 271 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 272 unsigned long *, u32 *); 273 efi_status_t (*allocate_pool)(int, unsigned long, void **); 274 efi_status_t (*free_pool)(void *); 275 void *create_event; 276 void *set_timer; 277 void *wait_for_event; 278 void *signal_event; 279 void *close_event; 280 void *check_event; 281 void *install_protocol_interface; 282 void *reinstall_protocol_interface; 283 void *uninstall_protocol_interface; 284 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 285 void *__reserved; 286 void *register_protocol_notify; 287 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 288 unsigned long *, efi_handle_t *); 289 void *locate_device_path; 290 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 291 void *load_image; 292 void *start_image; 293 void *exit; 294 void *unload_image; 295 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 296 void *get_next_monotonic_count; 297 void *stall; 298 void *set_watchdog_timer; 299 void *connect_controller; 300 void *disconnect_controller; 301 void *open_protocol; 302 void *close_protocol; 303 void *open_protocol_information; 304 void *protocols_per_handle; 305 void *locate_handle_buffer; 306 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 307 void *install_multiple_protocol_interfaces; 308 void *uninstall_multiple_protocol_interfaces; 309 void *calculate_crc32; 310 void *copy_mem; 311 void *set_mem; 312 void *create_event_ex; 313 } efi_boot_services_t; 314 315 typedef enum { 316 EfiPciIoWidthUint8, 317 EfiPciIoWidthUint16, 318 EfiPciIoWidthUint32, 319 EfiPciIoWidthUint64, 320 EfiPciIoWidthFifoUint8, 321 EfiPciIoWidthFifoUint16, 322 EfiPciIoWidthFifoUint32, 323 EfiPciIoWidthFifoUint64, 324 EfiPciIoWidthFillUint8, 325 EfiPciIoWidthFillUint16, 326 EfiPciIoWidthFillUint32, 327 EfiPciIoWidthFillUint64, 328 EfiPciIoWidthMaximum 329 } EFI_PCI_IO_PROTOCOL_WIDTH; 330 331 typedef enum { 332 EfiPciIoAttributeOperationGet, 333 EfiPciIoAttributeOperationSet, 334 EfiPciIoAttributeOperationEnable, 335 EfiPciIoAttributeOperationDisable, 336 EfiPciIoAttributeOperationSupported, 337 EfiPciIoAttributeOperationMaximum 338 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 339 340 typedef struct { 341 u32 read; 342 u32 write; 343 } efi_pci_io_protocol_access_32_t; 344 345 typedef struct { 346 u64 read; 347 u64 write; 348 } efi_pci_io_protocol_access_64_t; 349 350 typedef struct { 351 void *read; 352 void *write; 353 } efi_pci_io_protocol_access_t; 354 355 typedef struct { 356 u32 poll_mem; 357 u32 poll_io; 358 efi_pci_io_protocol_access_32_t mem; 359 efi_pci_io_protocol_access_32_t io; 360 efi_pci_io_protocol_access_32_t pci; 361 u32 copy_mem; 362 u32 map; 363 u32 unmap; 364 u32 allocate_buffer; 365 u32 free_buffer; 366 u32 flush; 367 u32 get_location; 368 u32 attributes; 369 u32 get_bar_attributes; 370 u32 set_bar_attributes; 371 uint64_t romsize; 372 void *romimage; 373 } efi_pci_io_protocol_32; 374 375 typedef struct { 376 u64 poll_mem; 377 u64 poll_io; 378 efi_pci_io_protocol_access_64_t mem; 379 efi_pci_io_protocol_access_64_t io; 380 efi_pci_io_protocol_access_64_t pci; 381 u64 copy_mem; 382 u64 map; 383 u64 unmap; 384 u64 allocate_buffer; 385 u64 free_buffer; 386 u64 flush; 387 u64 get_location; 388 u64 attributes; 389 u64 get_bar_attributes; 390 u64 set_bar_attributes; 391 uint64_t romsize; 392 void *romimage; 393 } efi_pci_io_protocol_64; 394 395 typedef struct { 396 void *poll_mem; 397 void *poll_io; 398 efi_pci_io_protocol_access_t mem; 399 efi_pci_io_protocol_access_t io; 400 efi_pci_io_protocol_access_t pci; 401 void *copy_mem; 402 void *map; 403 void *unmap; 404 void *allocate_buffer; 405 void *free_buffer; 406 void *flush; 407 void *get_location; 408 void *attributes; 409 void *get_bar_attributes; 410 void *set_bar_attributes; 411 uint64_t romsize; 412 void *romimage; 413 } efi_pci_io_protocol; 414 415 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 416 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 417 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 418 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 419 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 420 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 421 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 423 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 424 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 425 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 426 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 427 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 428 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 429 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 430 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 431 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 432 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 433 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 434 435 /* 436 * Types and defines for EFI ResetSystem 437 */ 438 #define EFI_RESET_COLD 0 439 #define EFI_RESET_WARM 1 440 #define EFI_RESET_SHUTDOWN 2 441 442 /* 443 * EFI Runtime Services table 444 */ 445 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 446 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 447 448 typedef struct { 449 efi_table_hdr_t hdr; 450 u32 get_time; 451 u32 set_time; 452 u32 get_wakeup_time; 453 u32 set_wakeup_time; 454 u32 set_virtual_address_map; 455 u32 convert_pointer; 456 u32 get_variable; 457 u32 get_next_variable; 458 u32 set_variable; 459 u32 get_next_high_mono_count; 460 u32 reset_system; 461 u32 update_capsule; 462 u32 query_capsule_caps; 463 u32 query_variable_info; 464 } efi_runtime_services_32_t; 465 466 typedef struct { 467 efi_table_hdr_t hdr; 468 u64 get_time; 469 u64 set_time; 470 u64 get_wakeup_time; 471 u64 set_wakeup_time; 472 u64 set_virtual_address_map; 473 u64 convert_pointer; 474 u64 get_variable; 475 u64 get_next_variable; 476 u64 set_variable; 477 u64 get_next_high_mono_count; 478 u64 reset_system; 479 u64 update_capsule; 480 u64 query_capsule_caps; 481 u64 query_variable_info; 482 } efi_runtime_services_64_t; 483 484 typedef struct { 485 efi_table_hdr_t hdr; 486 void *get_time; 487 void *set_time; 488 void *get_wakeup_time; 489 void *set_wakeup_time; 490 void *set_virtual_address_map; 491 void *convert_pointer; 492 void *get_variable; 493 void *get_next_variable; 494 void *set_variable; 495 void *get_next_high_mono_count; 496 void *reset_system; 497 void *update_capsule; 498 void *query_capsule_caps; 499 void *query_variable_info; 500 } efi_runtime_services_t; 501 502 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 503 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 504 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 505 efi_time_t *tm); 506 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 507 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 508 unsigned long *data_size, void *data); 509 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 510 efi_guid_t *vendor); 511 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 512 u32 attr, unsigned long data_size, 513 void *data); 514 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 515 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 516 unsigned long data_size, efi_char16_t *data); 517 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 518 unsigned long descriptor_size, 519 u32 descriptor_version, 520 efi_memory_desc_t *virtual_map); 521 typedef efi_status_t efi_query_variable_info_t(u32 attr, 522 u64 *storage_space, 523 u64 *remaining_space, 524 u64 *max_variable_size); 525 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 526 unsigned long count, 527 unsigned long sg_list); 528 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 529 unsigned long count, 530 u64 *max_size, 531 int *reset_type); 532 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 533 unsigned long size, 534 bool nonblocking); 535 536 void efi_native_runtime_setup(void); 537 538 /* 539 * EFI Configuration Table and GUID definitions 540 */ 541 #define NULL_GUID \ 542 EFI_GUID(0x00000000, 0x0000, 0x0000, \ 543 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 544 545 #define MPS_TABLE_GUID \ 546 EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \ 547 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 548 549 #define ACPI_TABLE_GUID \ 550 EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \ 551 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 552 553 #define ACPI_20_TABLE_GUID \ 554 EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \ 555 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 556 557 #define SMBIOS_TABLE_GUID \ 558 EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \ 559 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 560 561 #define SMBIOS3_TABLE_GUID \ 562 EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \ 563 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 564 565 #define SAL_SYSTEM_TABLE_GUID \ 566 EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \ 567 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 568 569 #define HCDP_TABLE_GUID \ 570 EFI_GUID(0xf951938d, 0x620b, 0x42ef, \ 571 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 572 573 #define UGA_IO_PROTOCOL_GUID \ 574 EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \ 575 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 576 577 #define EFI_GLOBAL_VARIABLE_GUID \ 578 EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \ 579 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 580 581 #define UV_SYSTEM_TABLE_GUID \ 582 EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \ 583 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 584 585 #define LINUX_EFI_CRASH_GUID \ 586 EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \ 587 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 588 589 #define LOADED_IMAGE_PROTOCOL_GUID \ 590 EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \ 591 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 592 593 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 594 EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \ 595 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 596 597 #define EFI_UGA_PROTOCOL_GUID \ 598 EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \ 599 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 600 601 #define EFI_PCI_IO_PROTOCOL_GUID \ 602 EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \ 603 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 604 605 #define EFI_FILE_INFO_ID \ 606 EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \ 607 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 608 609 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 610 EFI_GUID(0xb122a263, 0x3661, 0x4f68, \ 611 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 612 613 #define EFI_FILE_SYSTEM_GUID \ 614 EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \ 615 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 616 617 #define DEVICE_TREE_GUID \ 618 EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \ 619 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 620 621 #define EFI_PROPERTIES_TABLE_GUID \ 622 EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \ 623 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 624 625 #define EFI_RNG_PROTOCOL_GUID \ 626 EFI_GUID(0x3152bca5, 0xeade, 0x433d, \ 627 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 628 629 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \ 630 EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \ 631 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 632 633 #define EFI_CONSOLE_OUT_DEVICE_GUID \ 634 EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \ 635 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 636 637 /* 638 * This GUID is used to pass to the kernel proper the struct screen_info 639 * structure that was populated by the stub based on the GOP protocol instance 640 * associated with ConOut 641 */ 642 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \ 643 EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \ 644 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 645 646 #define LINUX_EFI_LOADER_ENTRY_GUID \ 647 EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \ 648 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 649 650 typedef struct { 651 efi_guid_t guid; 652 u64 table; 653 } efi_config_table_64_t; 654 655 typedef struct { 656 efi_guid_t guid; 657 u32 table; 658 } efi_config_table_32_t; 659 660 typedef struct { 661 efi_guid_t guid; 662 unsigned long table; 663 } efi_config_table_t; 664 665 typedef struct { 666 efi_guid_t guid; 667 const char *name; 668 unsigned long *ptr; 669 } efi_config_table_type_t; 670 671 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 672 673 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 674 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 675 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 676 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 677 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 678 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 679 680 typedef struct { 681 efi_table_hdr_t hdr; 682 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 683 u32 fw_revision; 684 u32 __pad1; 685 u64 con_in_handle; 686 u64 con_in; 687 u64 con_out_handle; 688 u64 con_out; 689 u64 stderr_handle; 690 u64 stderr; 691 u64 runtime; 692 u64 boottime; 693 u32 nr_tables; 694 u32 __pad2; 695 u64 tables; 696 } efi_system_table_64_t; 697 698 typedef struct { 699 efi_table_hdr_t hdr; 700 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 701 u32 fw_revision; 702 u32 con_in_handle; 703 u32 con_in; 704 u32 con_out_handle; 705 u32 con_out; 706 u32 stderr_handle; 707 u32 stderr; 708 u32 runtime; 709 u32 boottime; 710 u32 nr_tables; 711 u32 tables; 712 } efi_system_table_32_t; 713 714 typedef struct { 715 efi_table_hdr_t hdr; 716 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 717 u32 fw_revision; 718 unsigned long con_in_handle; 719 unsigned long con_in; 720 unsigned long con_out_handle; 721 unsigned long con_out; 722 unsigned long stderr_handle; 723 unsigned long stderr; 724 efi_runtime_services_t *runtime; 725 efi_boot_services_t *boottime; 726 unsigned long nr_tables; 727 unsigned long tables; 728 } efi_system_table_t; 729 730 struct efi_memory_map { 731 phys_addr_t phys_map; 732 void *map; 733 void *map_end; 734 int nr_map; 735 unsigned long desc_version; 736 unsigned long desc_size; 737 }; 738 739 struct efi_fdt_params { 740 u64 system_table; 741 u64 mmap; 742 u32 mmap_size; 743 u32 desc_size; 744 u32 desc_ver; 745 }; 746 747 typedef struct { 748 u32 revision; 749 u32 parent_handle; 750 u32 system_table; 751 u32 device_handle; 752 u32 file_path; 753 u32 reserved; 754 u32 load_options_size; 755 u32 load_options; 756 u32 image_base; 757 __aligned_u64 image_size; 758 unsigned int image_code_type; 759 unsigned int image_data_type; 760 unsigned long unload; 761 } efi_loaded_image_32_t; 762 763 typedef struct { 764 u32 revision; 765 u64 parent_handle; 766 u64 system_table; 767 u64 device_handle; 768 u64 file_path; 769 u64 reserved; 770 u32 load_options_size; 771 u64 load_options; 772 u64 image_base; 773 __aligned_u64 image_size; 774 unsigned int image_code_type; 775 unsigned int image_data_type; 776 unsigned long unload; 777 } efi_loaded_image_64_t; 778 779 typedef struct { 780 u32 revision; 781 void *parent_handle; 782 efi_system_table_t *system_table; 783 void *device_handle; 784 void *file_path; 785 void *reserved; 786 u32 load_options_size; 787 void *load_options; 788 void *image_base; 789 __aligned_u64 image_size; 790 unsigned int image_code_type; 791 unsigned int image_data_type; 792 unsigned long unload; 793 } efi_loaded_image_t; 794 795 796 typedef struct { 797 u64 size; 798 u64 file_size; 799 u64 phys_size; 800 efi_time_t create_time; 801 efi_time_t last_access_time; 802 efi_time_t modification_time; 803 __aligned_u64 attribute; 804 efi_char16_t filename[1]; 805 } efi_file_info_t; 806 807 typedef struct { 808 u64 revision; 809 u32 open; 810 u32 close; 811 u32 delete; 812 u32 read; 813 u32 write; 814 u32 get_position; 815 u32 set_position; 816 u32 get_info; 817 u32 set_info; 818 u32 flush; 819 } efi_file_handle_32_t; 820 821 typedef struct { 822 u64 revision; 823 u64 open; 824 u64 close; 825 u64 delete; 826 u64 read; 827 u64 write; 828 u64 get_position; 829 u64 set_position; 830 u64 get_info; 831 u64 set_info; 832 u64 flush; 833 } efi_file_handle_64_t; 834 835 typedef struct _efi_file_handle { 836 u64 revision; 837 efi_status_t (*open)(struct _efi_file_handle *, 838 struct _efi_file_handle **, 839 efi_char16_t *, u64, u64); 840 efi_status_t (*close)(struct _efi_file_handle *); 841 void *delete; 842 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 843 void *); 844 void *write; 845 void *get_position; 846 void *set_position; 847 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 848 unsigned long *, void *); 849 void *set_info; 850 void *flush; 851 } efi_file_handle_t; 852 853 typedef struct _efi_file_io_interface { 854 u64 revision; 855 int (*open_volume)(struct _efi_file_io_interface *, 856 efi_file_handle_t **); 857 } efi_file_io_interface_t; 858 859 #define EFI_FILE_MODE_READ 0x0000000000000001 860 #define EFI_FILE_MODE_WRITE 0x0000000000000002 861 #define EFI_FILE_MODE_CREATE 0x8000000000000000 862 863 typedef struct { 864 u32 version; 865 u32 length; 866 u64 memory_protection_attribute; 867 } efi_properties_table_t; 868 869 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 870 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 871 872 #define EFI_INVALID_TABLE_ADDR (~0UL) 873 874 typedef struct { 875 u32 version; 876 u32 num_entries; 877 u32 desc_size; 878 u32 reserved; 879 efi_memory_desc_t entry[0]; 880 } efi_memory_attributes_table_t; 881 882 /* 883 * All runtime access to EFI goes through this structure: 884 */ 885 extern struct efi { 886 efi_system_table_t *systab; /* EFI system table */ 887 unsigned int runtime_version; /* Runtime services version */ 888 unsigned long mps; /* MPS table */ 889 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 890 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 891 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 892 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 893 unsigned long sal_systab; /* SAL system table */ 894 unsigned long boot_info; /* boot info table */ 895 unsigned long hcdp; /* HCDP table */ 896 unsigned long uga; /* UGA table */ 897 unsigned long uv_systab; /* UV system table */ 898 unsigned long fw_vendor; /* fw_vendor */ 899 unsigned long runtime; /* runtime table */ 900 unsigned long config_table; /* config tables */ 901 unsigned long esrt; /* ESRT table */ 902 unsigned long properties_table; /* properties table */ 903 unsigned long mem_attr_table; /* memory attributes table */ 904 efi_get_time_t *get_time; 905 efi_set_time_t *set_time; 906 efi_get_wakeup_time_t *get_wakeup_time; 907 efi_set_wakeup_time_t *set_wakeup_time; 908 efi_get_variable_t *get_variable; 909 efi_get_next_variable_t *get_next_variable; 910 efi_set_variable_t *set_variable; 911 efi_set_variable_t *set_variable_nonblocking; 912 efi_query_variable_info_t *query_variable_info; 913 efi_query_variable_info_t *query_variable_info_nonblocking; 914 efi_update_capsule_t *update_capsule; 915 efi_query_capsule_caps_t *query_capsule_caps; 916 efi_get_next_high_mono_count_t *get_next_high_mono_count; 917 efi_reset_system_t *reset_system; 918 efi_set_virtual_address_map_t *set_virtual_address_map; 919 struct efi_memory_map memmap; 920 unsigned long flags; 921 } efi; 922 923 static inline int 924 efi_guidcmp (efi_guid_t left, efi_guid_t right) 925 { 926 return memcmp(&left, &right, sizeof (efi_guid_t)); 927 } 928 929 static inline char * 930 efi_guid_to_str(efi_guid_t *guid, char *out) 931 { 932 sprintf(out, "%pUl", guid->b); 933 return out; 934 } 935 936 extern void efi_init (void); 937 extern void *efi_get_pal_addr (void); 938 extern void efi_map_pal_code (void); 939 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 940 extern void efi_gettimeofday (struct timespec *ts); 941 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 942 #ifdef CONFIG_X86 943 extern void efi_late_init(void); 944 extern void efi_free_boot_services(void); 945 extern efi_status_t efi_query_variable_store(u32 attributes, 946 unsigned long size, 947 bool nonblocking); 948 extern void efi_find_mirror(void); 949 #else 950 static inline void efi_late_init(void) {} 951 static inline void efi_free_boot_services(void) {} 952 953 static inline efi_status_t efi_query_variable_store(u32 attributes, 954 unsigned long size, 955 bool nonblocking) 956 { 957 return EFI_SUCCESS; 958 } 959 #endif 960 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 961 extern int efi_config_init(efi_config_table_type_t *arch_tables); 962 #ifdef CONFIG_EFI_ESRT 963 extern void __init efi_esrt_init(void); 964 #else 965 static inline void efi_esrt_init(void) { } 966 #endif 967 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 968 efi_config_table_type_t *arch_tables); 969 extern u64 efi_get_iobase (void); 970 extern u32 efi_mem_type (unsigned long phys_addr); 971 extern u64 efi_mem_attributes (unsigned long phys_addr); 972 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 973 extern int __init efi_uart_console_only (void); 974 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 975 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 976 extern void efi_initialize_iomem_resources(struct resource *code_resource, 977 struct resource *data_resource, struct resource *bss_resource); 978 extern void efi_get_time(struct timespec *now); 979 extern void efi_reserve_boot_services(void); 980 extern int efi_get_fdt_params(struct efi_fdt_params *params); 981 extern struct kobject *efi_kobj; 982 983 extern int efi_reboot_quirk_mode; 984 extern bool efi_poweroff_required(void); 985 986 #ifdef CONFIG_EFI_FAKE_MEMMAP 987 extern void __init efi_fake_memmap(void); 988 #else 989 static inline void efi_fake_memmap(void) { } 990 #endif 991 992 /* 993 * efi_memattr_perm_setter - arch specific callback function passed into 994 * efi_memattr_apply_permissions() that updates the 995 * mapping permissions described by the second 996 * argument in the page tables referred to by the 997 * first argument. 998 */ 999 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 1000 1001 extern int efi_memattr_init(void); 1002 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 1003 efi_memattr_perm_setter fn); 1004 1005 /* Iterate through an efi_memory_map */ 1006 #define for_each_efi_memory_desc_in_map(m, md) \ 1007 for ((md) = (m)->map; \ 1008 ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ 1009 (md) = (void *)(md) + (m)->desc_size) 1010 1011 /** 1012 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 1013 * @md: the efi_memory_desc_t * iterator 1014 * 1015 * Once the loop finishes @md must not be accessed. 1016 */ 1017 #define for_each_efi_memory_desc(md) \ 1018 for_each_efi_memory_desc_in_map(&efi.memmap, md) 1019 1020 /* 1021 * Format an EFI memory descriptor's type and attributes to a user-provided 1022 * character buffer, as per snprintf(), and return the buffer. 1023 */ 1024 char * __init efi_md_typeattr_format(char *buf, size_t size, 1025 const efi_memory_desc_t *md); 1026 1027 /** 1028 * efi_range_is_wc - check the WC bit on an address range 1029 * @start: starting kvirt address 1030 * @len: length of range 1031 * 1032 * Consult the EFI memory map and make sure it's ok to set this range WC. 1033 * Returns true or false. 1034 */ 1035 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 1036 { 1037 unsigned long i; 1038 1039 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 1040 unsigned long paddr = __pa(start + i); 1041 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 1042 return 0; 1043 } 1044 /* The range checked out */ 1045 return 1; 1046 } 1047 1048 #ifdef CONFIG_EFI_PCDP 1049 extern int __init efi_setup_pcdp_console(char *); 1050 #endif 1051 1052 /* 1053 * We play games with efi_enabled so that the compiler will, if 1054 * possible, remove EFI-related code altogether. 1055 */ 1056 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1057 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1058 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1059 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1060 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1061 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1062 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1063 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1064 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1065 1066 #ifdef CONFIG_EFI 1067 /* 1068 * Test whether the above EFI_* bits are enabled. 1069 */ 1070 static inline bool efi_enabled(int feature) 1071 { 1072 return test_bit(feature, &efi.flags) != 0; 1073 } 1074 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1075 #else 1076 static inline bool efi_enabled(int feature) 1077 { 1078 return false; 1079 } 1080 static inline void 1081 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1082 1083 static inline bool 1084 efi_capsule_pending(int *reset_type) 1085 { 1086 return false; 1087 } 1088 #endif 1089 1090 extern int efi_status_to_err(efi_status_t status); 1091 1092 /* 1093 * Variable Attributes 1094 */ 1095 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1096 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1097 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1098 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1099 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1100 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1101 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1102 1103 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1104 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1105 EFI_VARIABLE_RUNTIME_ACCESS | \ 1106 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1107 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1108 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1109 EFI_VARIABLE_APPEND_WRITE) 1110 /* 1111 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1112 * not including trailing NUL 1113 */ 1114 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN 1115 1116 /* 1117 * The type of search to perform when calling boottime->locate_handle 1118 */ 1119 #define EFI_LOCATE_ALL_HANDLES 0 1120 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1121 #define EFI_LOCATE_BY_PROTOCOL 2 1122 1123 /* 1124 * EFI Device Path information 1125 */ 1126 #define EFI_DEV_HW 0x01 1127 #define EFI_DEV_PCI 1 1128 #define EFI_DEV_PCCARD 2 1129 #define EFI_DEV_MEM_MAPPED 3 1130 #define EFI_DEV_VENDOR 4 1131 #define EFI_DEV_CONTROLLER 5 1132 #define EFI_DEV_ACPI 0x02 1133 #define EFI_DEV_BASIC_ACPI 1 1134 #define EFI_DEV_EXPANDED_ACPI 2 1135 #define EFI_DEV_MSG 0x03 1136 #define EFI_DEV_MSG_ATAPI 1 1137 #define EFI_DEV_MSG_SCSI 2 1138 #define EFI_DEV_MSG_FC 3 1139 #define EFI_DEV_MSG_1394 4 1140 #define EFI_DEV_MSG_USB 5 1141 #define EFI_DEV_MSG_USB_CLASS 15 1142 #define EFI_DEV_MSG_I20 6 1143 #define EFI_DEV_MSG_MAC 11 1144 #define EFI_DEV_MSG_IPV4 12 1145 #define EFI_DEV_MSG_IPV6 13 1146 #define EFI_DEV_MSG_INFINIBAND 9 1147 #define EFI_DEV_MSG_UART 14 1148 #define EFI_DEV_MSG_VENDOR 10 1149 #define EFI_DEV_MEDIA 0x04 1150 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1151 #define EFI_DEV_MEDIA_CDROM 2 1152 #define EFI_DEV_MEDIA_VENDOR 3 1153 #define EFI_DEV_MEDIA_FILE 4 1154 #define EFI_DEV_MEDIA_PROTOCOL 5 1155 #define EFI_DEV_BIOS_BOOT 0x05 1156 #define EFI_DEV_END_PATH 0x7F 1157 #define EFI_DEV_END_PATH2 0xFF 1158 #define EFI_DEV_END_INSTANCE 0x01 1159 #define EFI_DEV_END_ENTIRE 0xFF 1160 1161 struct efi_generic_dev_path { 1162 u8 type; 1163 u8 sub_type; 1164 u16 length; 1165 } __attribute ((packed)); 1166 1167 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1168 { 1169 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1170 *addr &= PAGE_MASK; 1171 } 1172 1173 /* 1174 * EFI Variable support. 1175 * 1176 * Different firmware drivers can expose their EFI-like variables using 1177 * the following. 1178 */ 1179 1180 struct efivar_operations { 1181 efi_get_variable_t *get_variable; 1182 efi_get_next_variable_t *get_next_variable; 1183 efi_set_variable_t *set_variable; 1184 efi_set_variable_t *set_variable_nonblocking; 1185 efi_query_variable_store_t *query_variable_store; 1186 }; 1187 1188 struct efivars { 1189 /* 1190 * ->lock protects two things: 1191 * 1) efivarfs_list and efivars_sysfs_list 1192 * 2) ->ops calls 1193 */ 1194 spinlock_t lock; 1195 struct kset *kset; 1196 struct kobject *kobject; 1197 const struct efivar_operations *ops; 1198 }; 1199 1200 /* 1201 * The maximum size of VariableName + Data = 1024 1202 * Therefore, it's reasonable to save that much 1203 * space in each part of the structure, 1204 * and we use a page for reading/writing. 1205 */ 1206 1207 #define EFI_VAR_NAME_LEN 1024 1208 1209 struct efi_variable { 1210 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1211 efi_guid_t VendorGuid; 1212 unsigned long DataSize; 1213 __u8 Data[1024]; 1214 efi_status_t Status; 1215 __u32 Attributes; 1216 } __attribute__((packed)); 1217 1218 struct efivar_entry { 1219 struct efi_variable var; 1220 struct list_head list; 1221 struct kobject kobj; 1222 bool scanning; 1223 bool deleting; 1224 }; 1225 1226 struct efi_simple_text_output_protocol_32 { 1227 u32 reset; 1228 u32 output_string; 1229 u32 test_string; 1230 }; 1231 1232 struct efi_simple_text_output_protocol_64 { 1233 u64 reset; 1234 u64 output_string; 1235 u64 test_string; 1236 }; 1237 1238 struct efi_simple_text_output_protocol { 1239 void *reset; 1240 efi_status_t (*output_string)(void *, void *); 1241 void *test_string; 1242 }; 1243 1244 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1245 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1246 #define PIXEL_BIT_MASK 2 1247 #define PIXEL_BLT_ONLY 3 1248 #define PIXEL_FORMAT_MAX 4 1249 1250 struct efi_pixel_bitmask { 1251 u32 red_mask; 1252 u32 green_mask; 1253 u32 blue_mask; 1254 u32 reserved_mask; 1255 }; 1256 1257 struct efi_graphics_output_mode_info { 1258 u32 version; 1259 u32 horizontal_resolution; 1260 u32 vertical_resolution; 1261 int pixel_format; 1262 struct efi_pixel_bitmask pixel_information; 1263 u32 pixels_per_scan_line; 1264 } __packed; 1265 1266 struct efi_graphics_output_protocol_mode_32 { 1267 u32 max_mode; 1268 u32 mode; 1269 u32 info; 1270 u32 size_of_info; 1271 u64 frame_buffer_base; 1272 u32 frame_buffer_size; 1273 } __packed; 1274 1275 struct efi_graphics_output_protocol_mode_64 { 1276 u32 max_mode; 1277 u32 mode; 1278 u64 info; 1279 u64 size_of_info; 1280 u64 frame_buffer_base; 1281 u64 frame_buffer_size; 1282 } __packed; 1283 1284 struct efi_graphics_output_protocol_mode { 1285 u32 max_mode; 1286 u32 mode; 1287 unsigned long info; 1288 unsigned long size_of_info; 1289 u64 frame_buffer_base; 1290 unsigned long frame_buffer_size; 1291 } __packed; 1292 1293 struct efi_graphics_output_protocol_32 { 1294 u32 query_mode; 1295 u32 set_mode; 1296 u32 blt; 1297 u32 mode; 1298 }; 1299 1300 struct efi_graphics_output_protocol_64 { 1301 u64 query_mode; 1302 u64 set_mode; 1303 u64 blt; 1304 u64 mode; 1305 }; 1306 1307 struct efi_graphics_output_protocol { 1308 unsigned long query_mode; 1309 unsigned long set_mode; 1310 unsigned long blt; 1311 struct efi_graphics_output_protocol_mode *mode; 1312 }; 1313 1314 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1315 struct efi_graphics_output_protocol *, u32, unsigned long *, 1316 struct efi_graphics_output_mode_info **); 1317 1318 extern struct list_head efivar_sysfs_list; 1319 1320 static inline void 1321 efivar_unregister(struct efivar_entry *var) 1322 { 1323 kobject_put(&var->kobj); 1324 } 1325 1326 int efivars_register(struct efivars *efivars, 1327 const struct efivar_operations *ops, 1328 struct kobject *kobject); 1329 int efivars_unregister(struct efivars *efivars); 1330 struct kobject *efivars_kobject(void); 1331 1332 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1333 void *data, bool duplicates, struct list_head *head); 1334 1335 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1336 void efivar_entry_remove(struct efivar_entry *entry); 1337 1338 int __efivar_entry_delete(struct efivar_entry *entry); 1339 int efivar_entry_delete(struct efivar_entry *entry); 1340 1341 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1342 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1343 unsigned long *size, void *data); 1344 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1345 unsigned long *size, void *data); 1346 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1347 unsigned long size, void *data, struct list_head *head); 1348 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1349 unsigned long *size, void *data, bool *set); 1350 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1351 bool block, unsigned long size, void *data); 1352 1353 void efivar_entry_iter_begin(void); 1354 void efivar_entry_iter_end(void); 1355 1356 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1357 struct list_head *head, void *data, 1358 struct efivar_entry **prev); 1359 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1360 struct list_head *head, void *data); 1361 1362 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1363 struct list_head *head, bool remove); 1364 1365 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1366 unsigned long data_size); 1367 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1368 size_t len); 1369 1370 extern struct work_struct efivar_work; 1371 void efivar_run_worker(void); 1372 1373 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1374 int efivars_sysfs_init(void); 1375 1376 #define EFIVARS_DATA_SIZE_MAX 1024 1377 1378 #endif /* CONFIG_EFI_VARS */ 1379 extern bool efi_capsule_pending(int *reset_type); 1380 1381 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1382 size_t size, int *reset); 1383 1384 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1385 struct page **pages); 1386 1387 #ifdef CONFIG_EFI_RUNTIME_MAP 1388 int efi_runtime_map_init(struct kobject *); 1389 void efi_runtime_map_setup(void *, int, u32); 1390 int efi_get_runtime_map_size(void); 1391 int efi_get_runtime_map_desc_size(void); 1392 int efi_runtime_map_copy(void *buf, size_t bufsz); 1393 #else 1394 static inline int efi_runtime_map_init(struct kobject *kobj) 1395 { 1396 return 0; 1397 } 1398 1399 static inline void 1400 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1401 1402 static inline int efi_get_runtime_map_size(void) 1403 { 1404 return 0; 1405 } 1406 1407 static inline int efi_get_runtime_map_desc_size(void) 1408 { 1409 return 0; 1410 } 1411 1412 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1413 { 1414 return 0; 1415 } 1416 1417 #endif 1418 1419 /* prototypes shared between arch specific and generic stub code */ 1420 1421 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1422 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1423 1424 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1425 1426 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1427 unsigned long addr); 1428 1429 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1430 efi_loaded_image_t *image, int *cmd_line_len); 1431 1432 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1433 efi_memory_desc_t **map, 1434 unsigned long *map_size, 1435 unsigned long *desc_size, 1436 u32 *desc_ver, 1437 unsigned long *key_ptr); 1438 1439 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1440 unsigned long size, unsigned long align, 1441 unsigned long *addr); 1442 1443 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1444 unsigned long size, unsigned long align, 1445 unsigned long *addr, unsigned long max); 1446 1447 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1448 unsigned long *image_addr, 1449 unsigned long image_size, 1450 unsigned long alloc_size, 1451 unsigned long preferred_addr, 1452 unsigned long alignment); 1453 1454 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1455 efi_loaded_image_t *image, 1456 char *cmd_line, char *option_string, 1457 unsigned long max_addr, 1458 unsigned long *load_addr, 1459 unsigned long *load_size); 1460 1461 efi_status_t efi_parse_options(char *cmdline); 1462 1463 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1464 struct screen_info *si, efi_guid_t *proto, 1465 unsigned long size); 1466 1467 bool efi_runtime_disabled(void); 1468 #endif /* _LINUX_EFI_H */ 1469