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/screen_info.h> 25 26 #include <asm/page.h> 27 28 #define EFI_SUCCESS 0 29 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 30 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 31 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 32 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 39 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 40 41 typedef unsigned long efi_status_t; 42 typedef u8 efi_bool_t; 43 typedef u16 efi_char16_t; /* UNICODE character */ 44 typedef u64 efi_physical_addr_t; 45 typedef void *efi_handle_t; 46 47 48 typedef struct { 49 u8 b[16]; 50 } efi_guid_t; 51 52 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 53 ((efi_guid_t) \ 54 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 55 (b) & 0xff, ((b) >> 8) & 0xff, \ 56 (c) & 0xff, ((c) >> 8) & 0xff, \ 57 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 58 59 /* 60 * Generic EFI table header 61 */ 62 typedef struct { 63 u64 signature; 64 u32 revision; 65 u32 headersize; 66 u32 crc32; 67 u32 reserved; 68 } efi_table_hdr_t; 69 70 /* 71 * Memory map descriptor: 72 */ 73 74 /* Memory types: */ 75 #define EFI_RESERVED_TYPE 0 76 #define EFI_LOADER_CODE 1 77 #define EFI_LOADER_DATA 2 78 #define EFI_BOOT_SERVICES_CODE 3 79 #define EFI_BOOT_SERVICES_DATA 4 80 #define EFI_RUNTIME_SERVICES_CODE 5 81 #define EFI_RUNTIME_SERVICES_DATA 6 82 #define EFI_CONVENTIONAL_MEMORY 7 83 #define EFI_UNUSABLE_MEMORY 8 84 #define EFI_ACPI_RECLAIM_MEMORY 9 85 #define EFI_ACPI_MEMORY_NVS 10 86 #define EFI_MEMORY_MAPPED_IO 11 87 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 88 #define EFI_PAL_CODE 13 89 #define EFI_PERSISTENT_MEMORY 14 90 #define EFI_MAX_MEMORY_TYPE 15 91 92 /* Attribute values: */ 93 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 94 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 95 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 96 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 97 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 98 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 99 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 100 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 101 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 102 #define EFI_MEMORY_MORE_RELIABLE \ 103 ((u64)0x0000000000010000ULL) /* higher reliability */ 104 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 105 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 106 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 107 108 #define EFI_PAGE_SHIFT 12 109 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 110 111 typedef struct { 112 u32 type; 113 u32 pad; 114 u64 phys_addr; 115 u64 virt_addr; 116 u64 num_pages; 117 u64 attribute; 118 } efi_memory_desc_t; 119 120 typedef struct { 121 efi_guid_t guid; 122 u32 headersize; 123 u32 flags; 124 u32 imagesize; 125 } efi_capsule_header_t; 126 127 /* 128 * EFI capsule flags 129 */ 130 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 131 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 132 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 133 134 /* 135 * Allocation types for calls to boottime->allocate_pages. 136 */ 137 #define EFI_ALLOCATE_ANY_PAGES 0 138 #define EFI_ALLOCATE_MAX_ADDRESS 1 139 #define EFI_ALLOCATE_ADDRESS 2 140 #define EFI_MAX_ALLOCATE_TYPE 3 141 142 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 143 144 /* 145 * Types and defines for Time Services 146 */ 147 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 148 #define EFI_TIME_IN_DAYLIGHT 0x2 149 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 150 151 typedef struct { 152 u16 year; 153 u8 month; 154 u8 day; 155 u8 hour; 156 u8 minute; 157 u8 second; 158 u8 pad1; 159 u32 nanosecond; 160 s16 timezone; 161 u8 daylight; 162 u8 pad2; 163 } efi_time_t; 164 165 typedef struct { 166 u32 resolution; 167 u32 accuracy; 168 u8 sets_to_zero; 169 } efi_time_cap_t; 170 171 typedef struct { 172 efi_table_hdr_t hdr; 173 u32 raise_tpl; 174 u32 restore_tpl; 175 u32 allocate_pages; 176 u32 free_pages; 177 u32 get_memory_map; 178 u32 allocate_pool; 179 u32 free_pool; 180 u32 create_event; 181 u32 set_timer; 182 u32 wait_for_event; 183 u32 signal_event; 184 u32 close_event; 185 u32 check_event; 186 u32 install_protocol_interface; 187 u32 reinstall_protocol_interface; 188 u32 uninstall_protocol_interface; 189 u32 handle_protocol; 190 u32 __reserved; 191 u32 register_protocol_notify; 192 u32 locate_handle; 193 u32 locate_device_path; 194 u32 install_configuration_table; 195 u32 load_image; 196 u32 start_image; 197 u32 exit; 198 u32 unload_image; 199 u32 exit_boot_services; 200 u32 get_next_monotonic_count; 201 u32 stall; 202 u32 set_watchdog_timer; 203 u32 connect_controller; 204 u32 disconnect_controller; 205 u32 open_protocol; 206 u32 close_protocol; 207 u32 open_protocol_information; 208 u32 protocols_per_handle; 209 u32 locate_handle_buffer; 210 u32 locate_protocol; 211 u32 install_multiple_protocol_interfaces; 212 u32 uninstall_multiple_protocol_interfaces; 213 u32 calculate_crc32; 214 u32 copy_mem; 215 u32 set_mem; 216 u32 create_event_ex; 217 } __packed efi_boot_services_32_t; 218 219 typedef struct { 220 efi_table_hdr_t hdr; 221 u64 raise_tpl; 222 u64 restore_tpl; 223 u64 allocate_pages; 224 u64 free_pages; 225 u64 get_memory_map; 226 u64 allocate_pool; 227 u64 free_pool; 228 u64 create_event; 229 u64 set_timer; 230 u64 wait_for_event; 231 u64 signal_event; 232 u64 close_event; 233 u64 check_event; 234 u64 install_protocol_interface; 235 u64 reinstall_protocol_interface; 236 u64 uninstall_protocol_interface; 237 u64 handle_protocol; 238 u64 __reserved; 239 u64 register_protocol_notify; 240 u64 locate_handle; 241 u64 locate_device_path; 242 u64 install_configuration_table; 243 u64 load_image; 244 u64 start_image; 245 u64 exit; 246 u64 unload_image; 247 u64 exit_boot_services; 248 u64 get_next_monotonic_count; 249 u64 stall; 250 u64 set_watchdog_timer; 251 u64 connect_controller; 252 u64 disconnect_controller; 253 u64 open_protocol; 254 u64 close_protocol; 255 u64 open_protocol_information; 256 u64 protocols_per_handle; 257 u64 locate_handle_buffer; 258 u64 locate_protocol; 259 u64 install_multiple_protocol_interfaces; 260 u64 uninstall_multiple_protocol_interfaces; 261 u64 calculate_crc32; 262 u64 copy_mem; 263 u64 set_mem; 264 u64 create_event_ex; 265 } __packed efi_boot_services_64_t; 266 267 /* 268 * EFI Boot Services table 269 */ 270 typedef struct { 271 efi_table_hdr_t hdr; 272 void *raise_tpl; 273 void *restore_tpl; 274 efi_status_t (*allocate_pages)(int, int, unsigned long, 275 efi_physical_addr_t *); 276 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 277 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 278 unsigned long *, u32 *); 279 efi_status_t (*allocate_pool)(int, unsigned long, void **); 280 efi_status_t (*free_pool)(void *); 281 void *create_event; 282 void *set_timer; 283 void *wait_for_event; 284 void *signal_event; 285 void *close_event; 286 void *check_event; 287 void *install_protocol_interface; 288 void *reinstall_protocol_interface; 289 void *uninstall_protocol_interface; 290 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 291 void *__reserved; 292 void *register_protocol_notify; 293 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 294 unsigned long *, efi_handle_t *); 295 void *locate_device_path; 296 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 297 void *load_image; 298 void *start_image; 299 void *exit; 300 void *unload_image; 301 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 302 void *get_next_monotonic_count; 303 void *stall; 304 void *set_watchdog_timer; 305 void *connect_controller; 306 void *disconnect_controller; 307 void *open_protocol; 308 void *close_protocol; 309 void *open_protocol_information; 310 void *protocols_per_handle; 311 void *locate_handle_buffer; 312 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 313 void *install_multiple_protocol_interfaces; 314 void *uninstall_multiple_protocol_interfaces; 315 void *calculate_crc32; 316 void *copy_mem; 317 void *set_mem; 318 void *create_event_ex; 319 } efi_boot_services_t; 320 321 typedef enum { 322 EfiPciIoWidthUint8, 323 EfiPciIoWidthUint16, 324 EfiPciIoWidthUint32, 325 EfiPciIoWidthUint64, 326 EfiPciIoWidthFifoUint8, 327 EfiPciIoWidthFifoUint16, 328 EfiPciIoWidthFifoUint32, 329 EfiPciIoWidthFifoUint64, 330 EfiPciIoWidthFillUint8, 331 EfiPciIoWidthFillUint16, 332 EfiPciIoWidthFillUint32, 333 EfiPciIoWidthFillUint64, 334 EfiPciIoWidthMaximum 335 } EFI_PCI_IO_PROTOCOL_WIDTH; 336 337 typedef enum { 338 EfiPciIoAttributeOperationGet, 339 EfiPciIoAttributeOperationSet, 340 EfiPciIoAttributeOperationEnable, 341 EfiPciIoAttributeOperationDisable, 342 EfiPciIoAttributeOperationSupported, 343 EfiPciIoAttributeOperationMaximum 344 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 345 346 typedef struct { 347 u32 read; 348 u32 write; 349 } efi_pci_io_protocol_access_32_t; 350 351 typedef struct { 352 u64 read; 353 u64 write; 354 } efi_pci_io_protocol_access_64_t; 355 356 typedef struct { 357 void *read; 358 void *write; 359 } efi_pci_io_protocol_access_t; 360 361 typedef struct { 362 u32 poll_mem; 363 u32 poll_io; 364 efi_pci_io_protocol_access_32_t mem; 365 efi_pci_io_protocol_access_32_t io; 366 efi_pci_io_protocol_access_32_t pci; 367 u32 copy_mem; 368 u32 map; 369 u32 unmap; 370 u32 allocate_buffer; 371 u32 free_buffer; 372 u32 flush; 373 u32 get_location; 374 u32 attributes; 375 u32 get_bar_attributes; 376 u32 set_bar_attributes; 377 uint64_t romsize; 378 void *romimage; 379 } efi_pci_io_protocol_32; 380 381 typedef struct { 382 u64 poll_mem; 383 u64 poll_io; 384 efi_pci_io_protocol_access_64_t mem; 385 efi_pci_io_protocol_access_64_t io; 386 efi_pci_io_protocol_access_64_t pci; 387 u64 copy_mem; 388 u64 map; 389 u64 unmap; 390 u64 allocate_buffer; 391 u64 free_buffer; 392 u64 flush; 393 u64 get_location; 394 u64 attributes; 395 u64 get_bar_attributes; 396 u64 set_bar_attributes; 397 uint64_t romsize; 398 void *romimage; 399 } efi_pci_io_protocol_64; 400 401 typedef struct { 402 void *poll_mem; 403 void *poll_io; 404 efi_pci_io_protocol_access_t mem; 405 efi_pci_io_protocol_access_t io; 406 efi_pci_io_protocol_access_t pci; 407 void *copy_mem; 408 void *map; 409 void *unmap; 410 void *allocate_buffer; 411 void *free_buffer; 412 void *flush; 413 void *get_location; 414 void *attributes; 415 void *get_bar_attributes; 416 void *set_bar_attributes; 417 uint64_t romsize; 418 void *romimage; 419 } efi_pci_io_protocol; 420 421 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 422 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 423 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 424 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 425 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 426 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 427 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 428 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 429 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 430 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 431 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 432 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 433 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 434 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 435 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 436 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 437 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 438 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 439 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 440 441 /* 442 * Types and defines for EFI ResetSystem 443 */ 444 #define EFI_RESET_COLD 0 445 #define EFI_RESET_WARM 1 446 #define EFI_RESET_SHUTDOWN 2 447 448 /* 449 * EFI Runtime Services table 450 */ 451 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 452 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 453 454 typedef struct { 455 efi_table_hdr_t hdr; 456 u32 get_time; 457 u32 set_time; 458 u32 get_wakeup_time; 459 u32 set_wakeup_time; 460 u32 set_virtual_address_map; 461 u32 convert_pointer; 462 u32 get_variable; 463 u32 get_next_variable; 464 u32 set_variable; 465 u32 get_next_high_mono_count; 466 u32 reset_system; 467 u32 update_capsule; 468 u32 query_capsule_caps; 469 u32 query_variable_info; 470 } efi_runtime_services_32_t; 471 472 typedef struct { 473 efi_table_hdr_t hdr; 474 u64 get_time; 475 u64 set_time; 476 u64 get_wakeup_time; 477 u64 set_wakeup_time; 478 u64 set_virtual_address_map; 479 u64 convert_pointer; 480 u64 get_variable; 481 u64 get_next_variable; 482 u64 set_variable; 483 u64 get_next_high_mono_count; 484 u64 reset_system; 485 u64 update_capsule; 486 u64 query_capsule_caps; 487 u64 query_variable_info; 488 } efi_runtime_services_64_t; 489 490 typedef struct { 491 efi_table_hdr_t hdr; 492 void *get_time; 493 void *set_time; 494 void *get_wakeup_time; 495 void *set_wakeup_time; 496 void *set_virtual_address_map; 497 void *convert_pointer; 498 void *get_variable; 499 void *get_next_variable; 500 void *set_variable; 501 void *get_next_high_mono_count; 502 void *reset_system; 503 void *update_capsule; 504 void *query_capsule_caps; 505 void *query_variable_info; 506 } efi_runtime_services_t; 507 508 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 509 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 510 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 511 efi_time_t *tm); 512 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 513 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 514 unsigned long *data_size, void *data); 515 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 516 efi_guid_t *vendor); 517 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 518 u32 attr, unsigned long data_size, 519 void *data); 520 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 521 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 522 unsigned long data_size, efi_char16_t *data); 523 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 524 unsigned long descriptor_size, 525 u32 descriptor_version, 526 efi_memory_desc_t *virtual_map); 527 typedef efi_status_t efi_query_variable_info_t(u32 attr, 528 u64 *storage_space, 529 u64 *remaining_space, 530 u64 *max_variable_size); 531 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 532 unsigned long count, 533 unsigned long sg_list); 534 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 535 unsigned long count, 536 u64 *max_size, 537 int *reset_type); 538 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 539 unsigned long size, 540 bool nonblocking); 541 542 void efi_native_runtime_setup(void); 543 544 /* 545 * EFI Configuration Table and GUID definitions 546 */ 547 #define NULL_GUID \ 548 EFI_GUID(0x00000000, 0x0000, 0x0000, \ 549 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 550 551 #define MPS_TABLE_GUID \ 552 EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \ 553 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 554 555 #define ACPI_TABLE_GUID \ 556 EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \ 557 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 558 559 #define ACPI_20_TABLE_GUID \ 560 EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \ 561 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 562 563 #define SMBIOS_TABLE_GUID \ 564 EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \ 565 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 566 567 #define SMBIOS3_TABLE_GUID \ 568 EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \ 569 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 570 571 #define SAL_SYSTEM_TABLE_GUID \ 572 EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \ 573 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 574 575 #define HCDP_TABLE_GUID \ 576 EFI_GUID(0xf951938d, 0x620b, 0x42ef, \ 577 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 578 579 #define UGA_IO_PROTOCOL_GUID \ 580 EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \ 581 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 582 583 #define EFI_GLOBAL_VARIABLE_GUID \ 584 EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \ 585 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 586 587 #define UV_SYSTEM_TABLE_GUID \ 588 EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \ 589 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 590 591 #define LINUX_EFI_CRASH_GUID \ 592 EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \ 593 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 594 595 #define LOADED_IMAGE_PROTOCOL_GUID \ 596 EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \ 597 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 598 599 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 600 EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \ 601 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 602 603 #define EFI_UGA_PROTOCOL_GUID \ 604 EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \ 605 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 606 607 #define EFI_PCI_IO_PROTOCOL_GUID \ 608 EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \ 609 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 610 611 #define EFI_FILE_INFO_ID \ 612 EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \ 613 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 614 615 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 616 EFI_GUID(0xb122a263, 0x3661, 0x4f68, \ 617 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 618 619 #define EFI_FILE_SYSTEM_GUID \ 620 EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \ 621 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 622 623 #define DEVICE_TREE_GUID \ 624 EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \ 625 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 626 627 #define EFI_PROPERTIES_TABLE_GUID \ 628 EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \ 629 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 630 631 #define EFI_RNG_PROTOCOL_GUID \ 632 EFI_GUID(0x3152bca5, 0xeade, 0x433d, \ 633 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 634 635 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \ 636 EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \ 637 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 638 639 #define EFI_CONSOLE_OUT_DEVICE_GUID \ 640 EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \ 641 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 642 643 /* 644 * This GUID is used to pass to the kernel proper the struct screen_info 645 * structure that was populated by the stub based on the GOP protocol instance 646 * associated with ConOut 647 */ 648 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \ 649 EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \ 650 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 651 652 #define LINUX_EFI_LOADER_ENTRY_GUID \ 653 EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \ 654 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 655 656 typedef struct { 657 efi_guid_t guid; 658 u64 table; 659 } efi_config_table_64_t; 660 661 typedef struct { 662 efi_guid_t guid; 663 u32 table; 664 } efi_config_table_32_t; 665 666 typedef struct { 667 efi_guid_t guid; 668 unsigned long table; 669 } efi_config_table_t; 670 671 typedef struct { 672 efi_guid_t guid; 673 const char *name; 674 unsigned long *ptr; 675 } efi_config_table_type_t; 676 677 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 678 679 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 680 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 681 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 682 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 683 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 684 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 685 686 typedef struct { 687 efi_table_hdr_t hdr; 688 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 689 u32 fw_revision; 690 u32 __pad1; 691 u64 con_in_handle; 692 u64 con_in; 693 u64 con_out_handle; 694 u64 con_out; 695 u64 stderr_handle; 696 u64 stderr; 697 u64 runtime; 698 u64 boottime; 699 u32 nr_tables; 700 u32 __pad2; 701 u64 tables; 702 } efi_system_table_64_t; 703 704 typedef struct { 705 efi_table_hdr_t hdr; 706 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 707 u32 fw_revision; 708 u32 con_in_handle; 709 u32 con_in; 710 u32 con_out_handle; 711 u32 con_out; 712 u32 stderr_handle; 713 u32 stderr; 714 u32 runtime; 715 u32 boottime; 716 u32 nr_tables; 717 u32 tables; 718 } efi_system_table_32_t; 719 720 typedef struct { 721 efi_table_hdr_t hdr; 722 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 723 u32 fw_revision; 724 unsigned long con_in_handle; 725 unsigned long con_in; 726 unsigned long con_out_handle; 727 unsigned long con_out; 728 unsigned long stderr_handle; 729 unsigned long stderr; 730 efi_runtime_services_t *runtime; 731 efi_boot_services_t *boottime; 732 unsigned long nr_tables; 733 unsigned long tables; 734 } efi_system_table_t; 735 736 struct efi_memory_map { 737 phys_addr_t phys_map; 738 void *map; 739 void *map_end; 740 int nr_map; 741 unsigned long desc_version; 742 unsigned long desc_size; 743 }; 744 745 struct efi_fdt_params { 746 u64 system_table; 747 u64 mmap; 748 u32 mmap_size; 749 u32 desc_size; 750 u32 desc_ver; 751 }; 752 753 typedef struct { 754 u32 revision; 755 u32 parent_handle; 756 u32 system_table; 757 u32 device_handle; 758 u32 file_path; 759 u32 reserved; 760 u32 load_options_size; 761 u32 load_options; 762 u32 image_base; 763 __aligned_u64 image_size; 764 unsigned int image_code_type; 765 unsigned int image_data_type; 766 unsigned long unload; 767 } efi_loaded_image_32_t; 768 769 typedef struct { 770 u32 revision; 771 u64 parent_handle; 772 u64 system_table; 773 u64 device_handle; 774 u64 file_path; 775 u64 reserved; 776 u32 load_options_size; 777 u64 load_options; 778 u64 image_base; 779 __aligned_u64 image_size; 780 unsigned int image_code_type; 781 unsigned int image_data_type; 782 unsigned long unload; 783 } efi_loaded_image_64_t; 784 785 typedef struct { 786 u32 revision; 787 void *parent_handle; 788 efi_system_table_t *system_table; 789 void *device_handle; 790 void *file_path; 791 void *reserved; 792 u32 load_options_size; 793 void *load_options; 794 void *image_base; 795 __aligned_u64 image_size; 796 unsigned int image_code_type; 797 unsigned int image_data_type; 798 unsigned long unload; 799 } efi_loaded_image_t; 800 801 802 typedef struct { 803 u64 size; 804 u64 file_size; 805 u64 phys_size; 806 efi_time_t create_time; 807 efi_time_t last_access_time; 808 efi_time_t modification_time; 809 __aligned_u64 attribute; 810 efi_char16_t filename[1]; 811 } efi_file_info_t; 812 813 typedef struct { 814 u64 revision; 815 u32 open; 816 u32 close; 817 u32 delete; 818 u32 read; 819 u32 write; 820 u32 get_position; 821 u32 set_position; 822 u32 get_info; 823 u32 set_info; 824 u32 flush; 825 } efi_file_handle_32_t; 826 827 typedef struct { 828 u64 revision; 829 u64 open; 830 u64 close; 831 u64 delete; 832 u64 read; 833 u64 write; 834 u64 get_position; 835 u64 set_position; 836 u64 get_info; 837 u64 set_info; 838 u64 flush; 839 } efi_file_handle_64_t; 840 841 typedef struct _efi_file_handle { 842 u64 revision; 843 efi_status_t (*open)(struct _efi_file_handle *, 844 struct _efi_file_handle **, 845 efi_char16_t *, u64, u64); 846 efi_status_t (*close)(struct _efi_file_handle *); 847 void *delete; 848 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 849 void *); 850 void *write; 851 void *get_position; 852 void *set_position; 853 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 854 unsigned long *, void *); 855 void *set_info; 856 void *flush; 857 } efi_file_handle_t; 858 859 typedef struct _efi_file_io_interface { 860 u64 revision; 861 int (*open_volume)(struct _efi_file_io_interface *, 862 efi_file_handle_t **); 863 } efi_file_io_interface_t; 864 865 #define EFI_FILE_MODE_READ 0x0000000000000001 866 #define EFI_FILE_MODE_WRITE 0x0000000000000002 867 #define EFI_FILE_MODE_CREATE 0x8000000000000000 868 869 typedef struct { 870 u32 version; 871 u32 length; 872 u64 memory_protection_attribute; 873 } efi_properties_table_t; 874 875 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 876 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 877 878 #define EFI_INVALID_TABLE_ADDR (~0UL) 879 880 typedef struct { 881 u32 version; 882 u32 num_entries; 883 u32 desc_size; 884 u32 reserved; 885 efi_memory_desc_t entry[0]; 886 } efi_memory_attributes_table_t; 887 888 /* 889 * All runtime access to EFI goes through this structure: 890 */ 891 extern struct efi { 892 efi_system_table_t *systab; /* EFI system table */ 893 unsigned int runtime_version; /* Runtime services version */ 894 unsigned long mps; /* MPS table */ 895 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 896 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 897 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 898 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 899 unsigned long sal_systab; /* SAL system table */ 900 unsigned long boot_info; /* boot info table */ 901 unsigned long hcdp; /* HCDP table */ 902 unsigned long uga; /* UGA table */ 903 unsigned long uv_systab; /* UV system table */ 904 unsigned long fw_vendor; /* fw_vendor */ 905 unsigned long runtime; /* runtime table */ 906 unsigned long config_table; /* config tables */ 907 unsigned long esrt; /* ESRT table */ 908 unsigned long properties_table; /* properties table */ 909 unsigned long mem_attr_table; /* memory attributes table */ 910 efi_get_time_t *get_time; 911 efi_set_time_t *set_time; 912 efi_get_wakeup_time_t *get_wakeup_time; 913 efi_set_wakeup_time_t *set_wakeup_time; 914 efi_get_variable_t *get_variable; 915 efi_get_next_variable_t *get_next_variable; 916 efi_set_variable_t *set_variable; 917 efi_set_variable_t *set_variable_nonblocking; 918 efi_query_variable_info_t *query_variable_info; 919 efi_query_variable_info_t *query_variable_info_nonblocking; 920 efi_update_capsule_t *update_capsule; 921 efi_query_capsule_caps_t *query_capsule_caps; 922 efi_get_next_high_mono_count_t *get_next_high_mono_count; 923 efi_reset_system_t *reset_system; 924 efi_set_virtual_address_map_t *set_virtual_address_map; 925 struct efi_memory_map memmap; 926 unsigned long flags; 927 } efi; 928 929 static inline int 930 efi_guidcmp (efi_guid_t left, efi_guid_t right) 931 { 932 return memcmp(&left, &right, sizeof (efi_guid_t)); 933 } 934 935 static inline char * 936 efi_guid_to_str(efi_guid_t *guid, char *out) 937 { 938 sprintf(out, "%pUl", guid->b); 939 return out; 940 } 941 942 extern void efi_init (void); 943 extern void *efi_get_pal_addr (void); 944 extern void efi_map_pal_code (void); 945 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 946 extern void efi_gettimeofday (struct timespec *ts); 947 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 948 #ifdef CONFIG_X86 949 extern void efi_late_init(void); 950 extern void efi_free_boot_services(void); 951 extern efi_status_t efi_query_variable_store(u32 attributes, 952 unsigned long size, 953 bool nonblocking); 954 extern void efi_find_mirror(void); 955 #else 956 static inline void efi_late_init(void) {} 957 static inline void efi_free_boot_services(void) {} 958 959 static inline efi_status_t efi_query_variable_store(u32 attributes, 960 unsigned long size, 961 bool nonblocking) 962 { 963 return EFI_SUCCESS; 964 } 965 #endif 966 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 967 extern int efi_config_init(efi_config_table_type_t *arch_tables); 968 #ifdef CONFIG_EFI_ESRT 969 extern void __init efi_esrt_init(void); 970 #else 971 static inline void efi_esrt_init(void) { } 972 #endif 973 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 974 efi_config_table_type_t *arch_tables); 975 extern u64 efi_get_iobase (void); 976 extern u32 efi_mem_type (unsigned long phys_addr); 977 extern u64 efi_mem_attributes (unsigned long phys_addr); 978 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 979 extern int __init efi_uart_console_only (void); 980 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 981 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 982 extern void efi_initialize_iomem_resources(struct resource *code_resource, 983 struct resource *data_resource, struct resource *bss_resource); 984 extern void efi_get_time(struct timespec *now); 985 extern void efi_reserve_boot_services(void); 986 extern int efi_get_fdt_params(struct efi_fdt_params *params); 987 extern struct kobject *efi_kobj; 988 989 extern int efi_reboot_quirk_mode; 990 extern bool efi_poweroff_required(void); 991 992 #ifdef CONFIG_EFI_FAKE_MEMMAP 993 extern void __init efi_fake_memmap(void); 994 #else 995 static inline void efi_fake_memmap(void) { } 996 #endif 997 998 /* 999 * efi_memattr_perm_setter - arch specific callback function passed into 1000 * efi_memattr_apply_permissions() that updates the 1001 * mapping permissions described by the second 1002 * argument in the page tables referred to by the 1003 * first argument. 1004 */ 1005 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 1006 1007 extern int efi_memattr_init(void); 1008 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 1009 efi_memattr_perm_setter fn); 1010 1011 /* Iterate through an efi_memory_map */ 1012 #define for_each_efi_memory_desc_in_map(m, md) \ 1013 for ((md) = (m)->map; \ 1014 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ 1015 (md) = (void *)(md) + (m)->desc_size) 1016 1017 /** 1018 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 1019 * @md: the efi_memory_desc_t * iterator 1020 * 1021 * Once the loop finishes @md must not be accessed. 1022 */ 1023 #define for_each_efi_memory_desc(md) \ 1024 for_each_efi_memory_desc_in_map(&efi.memmap, md) 1025 1026 /* 1027 * Format an EFI memory descriptor's type and attributes to a user-provided 1028 * character buffer, as per snprintf(), and return the buffer. 1029 */ 1030 char * __init efi_md_typeattr_format(char *buf, size_t size, 1031 const efi_memory_desc_t *md); 1032 1033 /** 1034 * efi_range_is_wc - check the WC bit on an address range 1035 * @start: starting kvirt address 1036 * @len: length of range 1037 * 1038 * Consult the EFI memory map and make sure it's ok to set this range WC. 1039 * Returns true or false. 1040 */ 1041 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 1042 { 1043 unsigned long i; 1044 1045 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 1046 unsigned long paddr = __pa(start + i); 1047 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 1048 return 0; 1049 } 1050 /* The range checked out */ 1051 return 1; 1052 } 1053 1054 #ifdef CONFIG_EFI_PCDP 1055 extern int __init efi_setup_pcdp_console(char *); 1056 #endif 1057 1058 /* 1059 * We play games with efi_enabled so that the compiler will, if 1060 * possible, remove EFI-related code altogether. 1061 */ 1062 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1063 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1064 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1065 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1066 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1067 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1068 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1069 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1070 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1071 1072 #ifdef CONFIG_EFI 1073 /* 1074 * Test whether the above EFI_* bits are enabled. 1075 */ 1076 static inline bool efi_enabled(int feature) 1077 { 1078 return test_bit(feature, &efi.flags) != 0; 1079 } 1080 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1081 #else 1082 static inline bool efi_enabled(int feature) 1083 { 1084 return false; 1085 } 1086 static inline void 1087 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1088 1089 static inline bool 1090 efi_capsule_pending(int *reset_type) 1091 { 1092 return false; 1093 } 1094 #endif 1095 1096 extern int efi_status_to_err(efi_status_t status); 1097 1098 /* 1099 * Variable Attributes 1100 */ 1101 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1102 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1103 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1104 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1105 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1106 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1107 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1108 1109 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1110 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1111 EFI_VARIABLE_RUNTIME_ACCESS | \ 1112 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1113 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1114 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1115 EFI_VARIABLE_APPEND_WRITE) 1116 /* 1117 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1118 * not including trailing NUL 1119 */ 1120 #define EFI_VARIABLE_GUID_LEN 36 1121 1122 /* 1123 * The type of search to perform when calling boottime->locate_handle 1124 */ 1125 #define EFI_LOCATE_ALL_HANDLES 0 1126 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1127 #define EFI_LOCATE_BY_PROTOCOL 2 1128 1129 /* 1130 * EFI Device Path information 1131 */ 1132 #define EFI_DEV_HW 0x01 1133 #define EFI_DEV_PCI 1 1134 #define EFI_DEV_PCCARD 2 1135 #define EFI_DEV_MEM_MAPPED 3 1136 #define EFI_DEV_VENDOR 4 1137 #define EFI_DEV_CONTROLLER 5 1138 #define EFI_DEV_ACPI 0x02 1139 #define EFI_DEV_BASIC_ACPI 1 1140 #define EFI_DEV_EXPANDED_ACPI 2 1141 #define EFI_DEV_MSG 0x03 1142 #define EFI_DEV_MSG_ATAPI 1 1143 #define EFI_DEV_MSG_SCSI 2 1144 #define EFI_DEV_MSG_FC 3 1145 #define EFI_DEV_MSG_1394 4 1146 #define EFI_DEV_MSG_USB 5 1147 #define EFI_DEV_MSG_USB_CLASS 15 1148 #define EFI_DEV_MSG_I20 6 1149 #define EFI_DEV_MSG_MAC 11 1150 #define EFI_DEV_MSG_IPV4 12 1151 #define EFI_DEV_MSG_IPV6 13 1152 #define EFI_DEV_MSG_INFINIBAND 9 1153 #define EFI_DEV_MSG_UART 14 1154 #define EFI_DEV_MSG_VENDOR 10 1155 #define EFI_DEV_MEDIA 0x04 1156 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1157 #define EFI_DEV_MEDIA_CDROM 2 1158 #define EFI_DEV_MEDIA_VENDOR 3 1159 #define EFI_DEV_MEDIA_FILE 4 1160 #define EFI_DEV_MEDIA_PROTOCOL 5 1161 #define EFI_DEV_BIOS_BOOT 0x05 1162 #define EFI_DEV_END_PATH 0x7F 1163 #define EFI_DEV_END_PATH2 0xFF 1164 #define EFI_DEV_END_INSTANCE 0x01 1165 #define EFI_DEV_END_ENTIRE 0xFF 1166 1167 struct efi_generic_dev_path { 1168 u8 type; 1169 u8 sub_type; 1170 u16 length; 1171 } __attribute ((packed)); 1172 1173 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1174 { 1175 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1176 *addr &= PAGE_MASK; 1177 } 1178 1179 /* 1180 * EFI Variable support. 1181 * 1182 * Different firmware drivers can expose their EFI-like variables using 1183 * the following. 1184 */ 1185 1186 struct efivar_operations { 1187 efi_get_variable_t *get_variable; 1188 efi_get_next_variable_t *get_next_variable; 1189 efi_set_variable_t *set_variable; 1190 efi_set_variable_t *set_variable_nonblocking; 1191 efi_query_variable_store_t *query_variable_store; 1192 }; 1193 1194 struct efivars { 1195 /* 1196 * ->lock protects two things: 1197 * 1) efivarfs_list and efivars_sysfs_list 1198 * 2) ->ops calls 1199 */ 1200 spinlock_t lock; 1201 struct kset *kset; 1202 struct kobject *kobject; 1203 const struct efivar_operations *ops; 1204 }; 1205 1206 /* 1207 * The maximum size of VariableName + Data = 1024 1208 * Therefore, it's reasonable to save that much 1209 * space in each part of the structure, 1210 * and we use a page for reading/writing. 1211 */ 1212 1213 #define EFI_VAR_NAME_LEN 1024 1214 1215 struct efi_variable { 1216 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1217 efi_guid_t VendorGuid; 1218 unsigned long DataSize; 1219 __u8 Data[1024]; 1220 efi_status_t Status; 1221 __u32 Attributes; 1222 } __attribute__((packed)); 1223 1224 struct efivar_entry { 1225 struct efi_variable var; 1226 struct list_head list; 1227 struct kobject kobj; 1228 bool scanning; 1229 bool deleting; 1230 }; 1231 1232 struct efi_simple_text_output_protocol_32 { 1233 u32 reset; 1234 u32 output_string; 1235 u32 test_string; 1236 }; 1237 1238 struct efi_simple_text_output_protocol_64 { 1239 u64 reset; 1240 u64 output_string; 1241 u64 test_string; 1242 }; 1243 1244 struct efi_simple_text_output_protocol { 1245 void *reset; 1246 efi_status_t (*output_string)(void *, void *); 1247 void *test_string; 1248 }; 1249 1250 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1251 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1252 #define PIXEL_BIT_MASK 2 1253 #define PIXEL_BLT_ONLY 3 1254 #define PIXEL_FORMAT_MAX 4 1255 1256 struct efi_pixel_bitmask { 1257 u32 red_mask; 1258 u32 green_mask; 1259 u32 blue_mask; 1260 u32 reserved_mask; 1261 }; 1262 1263 struct efi_graphics_output_mode_info { 1264 u32 version; 1265 u32 horizontal_resolution; 1266 u32 vertical_resolution; 1267 int pixel_format; 1268 struct efi_pixel_bitmask pixel_information; 1269 u32 pixels_per_scan_line; 1270 } __packed; 1271 1272 struct efi_graphics_output_protocol_mode_32 { 1273 u32 max_mode; 1274 u32 mode; 1275 u32 info; 1276 u32 size_of_info; 1277 u64 frame_buffer_base; 1278 u32 frame_buffer_size; 1279 } __packed; 1280 1281 struct efi_graphics_output_protocol_mode_64 { 1282 u32 max_mode; 1283 u32 mode; 1284 u64 info; 1285 u64 size_of_info; 1286 u64 frame_buffer_base; 1287 u64 frame_buffer_size; 1288 } __packed; 1289 1290 struct efi_graphics_output_protocol_mode { 1291 u32 max_mode; 1292 u32 mode; 1293 unsigned long info; 1294 unsigned long size_of_info; 1295 u64 frame_buffer_base; 1296 unsigned long frame_buffer_size; 1297 } __packed; 1298 1299 struct efi_graphics_output_protocol_32 { 1300 u32 query_mode; 1301 u32 set_mode; 1302 u32 blt; 1303 u32 mode; 1304 }; 1305 1306 struct efi_graphics_output_protocol_64 { 1307 u64 query_mode; 1308 u64 set_mode; 1309 u64 blt; 1310 u64 mode; 1311 }; 1312 1313 struct efi_graphics_output_protocol { 1314 unsigned long query_mode; 1315 unsigned long set_mode; 1316 unsigned long blt; 1317 struct efi_graphics_output_protocol_mode *mode; 1318 }; 1319 1320 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1321 struct efi_graphics_output_protocol *, u32, unsigned long *, 1322 struct efi_graphics_output_mode_info **); 1323 1324 extern struct list_head efivar_sysfs_list; 1325 1326 static inline void 1327 efivar_unregister(struct efivar_entry *var) 1328 { 1329 kobject_put(&var->kobj); 1330 } 1331 1332 int efivars_register(struct efivars *efivars, 1333 const struct efivar_operations *ops, 1334 struct kobject *kobject); 1335 int efivars_unregister(struct efivars *efivars); 1336 struct kobject *efivars_kobject(void); 1337 1338 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1339 void *data, bool duplicates, struct list_head *head); 1340 1341 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1342 void efivar_entry_remove(struct efivar_entry *entry); 1343 1344 int __efivar_entry_delete(struct efivar_entry *entry); 1345 int efivar_entry_delete(struct efivar_entry *entry); 1346 1347 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1348 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1349 unsigned long *size, void *data); 1350 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1351 unsigned long *size, void *data); 1352 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1353 unsigned long size, void *data, struct list_head *head); 1354 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1355 unsigned long *size, void *data, bool *set); 1356 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1357 bool block, unsigned long size, void *data); 1358 1359 void efivar_entry_iter_begin(void); 1360 void efivar_entry_iter_end(void); 1361 1362 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1363 struct list_head *head, void *data, 1364 struct efivar_entry **prev); 1365 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1366 struct list_head *head, void *data); 1367 1368 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1369 struct list_head *head, bool remove); 1370 1371 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1372 unsigned long data_size); 1373 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1374 size_t len); 1375 1376 extern struct work_struct efivar_work; 1377 void efivar_run_worker(void); 1378 1379 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1380 int efivars_sysfs_init(void); 1381 1382 #define EFIVARS_DATA_SIZE_MAX 1024 1383 1384 #endif /* CONFIG_EFI_VARS */ 1385 extern bool efi_capsule_pending(int *reset_type); 1386 1387 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1388 size_t size, int *reset); 1389 1390 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1391 struct page **pages); 1392 1393 #ifdef CONFIG_EFI_RUNTIME_MAP 1394 int efi_runtime_map_init(struct kobject *); 1395 void efi_runtime_map_setup(void *, int, u32); 1396 int efi_get_runtime_map_size(void); 1397 int efi_get_runtime_map_desc_size(void); 1398 int efi_runtime_map_copy(void *buf, size_t bufsz); 1399 #else 1400 static inline int efi_runtime_map_init(struct kobject *kobj) 1401 { 1402 return 0; 1403 } 1404 1405 static inline void 1406 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1407 1408 static inline int efi_get_runtime_map_size(void) 1409 { 1410 return 0; 1411 } 1412 1413 static inline int efi_get_runtime_map_desc_size(void) 1414 { 1415 return 0; 1416 } 1417 1418 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1419 { 1420 return 0; 1421 } 1422 1423 #endif 1424 1425 /* prototypes shared between arch specific and generic stub code */ 1426 1427 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1428 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1429 1430 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1431 1432 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1433 unsigned long addr); 1434 1435 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1436 efi_loaded_image_t *image, int *cmd_line_len); 1437 1438 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1439 efi_memory_desc_t **map, 1440 unsigned long *map_size, 1441 unsigned long *desc_size, 1442 u32 *desc_ver, 1443 unsigned long *key_ptr); 1444 1445 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1446 unsigned long size, unsigned long align, 1447 unsigned long *addr); 1448 1449 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1450 unsigned long size, unsigned long align, 1451 unsigned long *addr, unsigned long max); 1452 1453 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1454 unsigned long *image_addr, 1455 unsigned long image_size, 1456 unsigned long alloc_size, 1457 unsigned long preferred_addr, 1458 unsigned long alignment); 1459 1460 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1461 efi_loaded_image_t *image, 1462 char *cmd_line, char *option_string, 1463 unsigned long max_addr, 1464 unsigned long *load_addr, 1465 unsigned long *load_size); 1466 1467 efi_status_t efi_parse_options(char *cmdline); 1468 1469 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1470 struct screen_info *si, efi_guid_t *proto, 1471 unsigned long size); 1472 1473 bool efi_runtime_disabled(void); 1474 #endif /* _LINUX_EFI_H */ 1475