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