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 <drummond@valinux.com> 10 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. 11 * David Mosberger-Tang <davidm@hpl.hp.com> 12 * Stephane Eranian <eranian@hpl.hp.com> 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 25 #include <asm/page.h> 26 27 #define EFI_SUCCESS 0 28 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 29 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 30 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 31 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 32 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 39 40 typedef unsigned long efi_status_t; 41 typedef u8 efi_bool_t; 42 typedef u16 efi_char16_t; /* UNICODE character */ 43 typedef u64 efi_physical_addr_t; 44 typedef void *efi_handle_t; 45 46 47 typedef struct { 48 u8 b[16]; 49 } efi_guid_t; 50 51 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 52 ((efi_guid_t) \ 53 {{ (a) & 0xff, ((a) >> 8) & 0xff, ((a) >> 16) & 0xff, ((a) >> 24) & 0xff, \ 54 (b) & 0xff, ((b) >> 8) & 0xff, \ 55 (c) & 0xff, ((c) >> 8) & 0xff, \ 56 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) }}) 57 58 /* 59 * Generic EFI table header 60 */ 61 typedef struct { 62 u64 signature; 63 u32 revision; 64 u32 headersize; 65 u32 crc32; 66 u32 reserved; 67 } efi_table_hdr_t; 68 69 /* 70 * Memory map descriptor: 71 */ 72 73 /* Memory types: */ 74 #define EFI_RESERVED_TYPE 0 75 #define EFI_LOADER_CODE 1 76 #define EFI_LOADER_DATA 2 77 #define EFI_BOOT_SERVICES_CODE 3 78 #define EFI_BOOT_SERVICES_DATA 4 79 #define EFI_RUNTIME_SERVICES_CODE 5 80 #define EFI_RUNTIME_SERVICES_DATA 6 81 #define EFI_CONVENTIONAL_MEMORY 7 82 #define EFI_UNUSABLE_MEMORY 8 83 #define EFI_ACPI_RECLAIM_MEMORY 9 84 #define EFI_ACPI_MEMORY_NVS 10 85 #define EFI_MEMORY_MAPPED_IO 11 86 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 87 #define EFI_PAL_CODE 13 88 #define EFI_PERSISTENT_MEMORY 14 89 #define EFI_MAX_MEMORY_TYPE 15 90 91 /* Attribute values: */ 92 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 93 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 94 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 95 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 96 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 97 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 98 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 99 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 100 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 101 #define EFI_MEMORY_MORE_RELIABLE \ 102 ((u64)0x0000000000010000ULL) /* higher reliability */ 103 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 104 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 105 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 106 107 #define EFI_PAGE_SHIFT 12 108 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 109 110 typedef struct { 111 u32 type; 112 u32 pad; 113 u64 phys_addr; 114 u64 virt_addr; 115 u64 num_pages; 116 u64 attribute; 117 } efi_memory_desc_t; 118 119 typedef struct { 120 efi_guid_t guid; 121 u32 headersize; 122 u32 flags; 123 u32 imagesize; 124 } efi_capsule_header_t; 125 126 /* 127 * Allocation types for calls to boottime->allocate_pages. 128 */ 129 #define EFI_ALLOCATE_ANY_PAGES 0 130 #define EFI_ALLOCATE_MAX_ADDRESS 1 131 #define EFI_ALLOCATE_ADDRESS 2 132 #define EFI_MAX_ALLOCATE_TYPE 3 133 134 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 135 136 /* 137 * Types and defines for Time Services 138 */ 139 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 140 #define EFI_TIME_IN_DAYLIGHT 0x2 141 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 142 143 typedef struct { 144 u16 year; 145 u8 month; 146 u8 day; 147 u8 hour; 148 u8 minute; 149 u8 second; 150 u8 pad1; 151 u32 nanosecond; 152 s16 timezone; 153 u8 daylight; 154 u8 pad2; 155 } efi_time_t; 156 157 typedef struct { 158 u32 resolution; 159 u32 accuracy; 160 u8 sets_to_zero; 161 } efi_time_cap_t; 162 163 typedef struct { 164 efi_table_hdr_t hdr; 165 u32 raise_tpl; 166 u32 restore_tpl; 167 u32 allocate_pages; 168 u32 free_pages; 169 u32 get_memory_map; 170 u32 allocate_pool; 171 u32 free_pool; 172 u32 create_event; 173 u32 set_timer; 174 u32 wait_for_event; 175 u32 signal_event; 176 u32 close_event; 177 u32 check_event; 178 u32 install_protocol_interface; 179 u32 reinstall_protocol_interface; 180 u32 uninstall_protocol_interface; 181 u32 handle_protocol; 182 u32 __reserved; 183 u32 register_protocol_notify; 184 u32 locate_handle; 185 u32 locate_device_path; 186 u32 install_configuration_table; 187 u32 load_image; 188 u32 start_image; 189 u32 exit; 190 u32 unload_image; 191 u32 exit_boot_services; 192 u32 get_next_monotonic_count; 193 u32 stall; 194 u32 set_watchdog_timer; 195 u32 connect_controller; 196 u32 disconnect_controller; 197 u32 open_protocol; 198 u32 close_protocol; 199 u32 open_protocol_information; 200 u32 protocols_per_handle; 201 u32 locate_handle_buffer; 202 u32 locate_protocol; 203 u32 install_multiple_protocol_interfaces; 204 u32 uninstall_multiple_protocol_interfaces; 205 u32 calculate_crc32; 206 u32 copy_mem; 207 u32 set_mem; 208 u32 create_event_ex; 209 } __packed efi_boot_services_32_t; 210 211 typedef struct { 212 efi_table_hdr_t hdr; 213 u64 raise_tpl; 214 u64 restore_tpl; 215 u64 allocate_pages; 216 u64 free_pages; 217 u64 get_memory_map; 218 u64 allocate_pool; 219 u64 free_pool; 220 u64 create_event; 221 u64 set_timer; 222 u64 wait_for_event; 223 u64 signal_event; 224 u64 close_event; 225 u64 check_event; 226 u64 install_protocol_interface; 227 u64 reinstall_protocol_interface; 228 u64 uninstall_protocol_interface; 229 u64 handle_protocol; 230 u64 __reserved; 231 u64 register_protocol_notify; 232 u64 locate_handle; 233 u64 locate_device_path; 234 u64 install_configuration_table; 235 u64 load_image; 236 u64 start_image; 237 u64 exit; 238 u64 unload_image; 239 u64 exit_boot_services; 240 u64 get_next_monotonic_count; 241 u64 stall; 242 u64 set_watchdog_timer; 243 u64 connect_controller; 244 u64 disconnect_controller; 245 u64 open_protocol; 246 u64 close_protocol; 247 u64 open_protocol_information; 248 u64 protocols_per_handle; 249 u64 locate_handle_buffer; 250 u64 locate_protocol; 251 u64 install_multiple_protocol_interfaces; 252 u64 uninstall_multiple_protocol_interfaces; 253 u64 calculate_crc32; 254 u64 copy_mem; 255 u64 set_mem; 256 u64 create_event_ex; 257 } __packed efi_boot_services_64_t; 258 259 /* 260 * EFI Boot Services table 261 */ 262 typedef struct { 263 efi_table_hdr_t hdr; 264 void *raise_tpl; 265 void *restore_tpl; 266 efi_status_t (*allocate_pages)(int, int, unsigned long, 267 efi_physical_addr_t *); 268 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 269 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 270 unsigned long *, u32 *); 271 efi_status_t (*allocate_pool)(int, unsigned long, void **); 272 efi_status_t (*free_pool)(void *); 273 void *create_event; 274 void *set_timer; 275 void *wait_for_event; 276 void *signal_event; 277 void *close_event; 278 void *check_event; 279 void *install_protocol_interface; 280 void *reinstall_protocol_interface; 281 void *uninstall_protocol_interface; 282 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 283 void *__reserved; 284 void *register_protocol_notify; 285 void *locate_handle; 286 void *locate_device_path; 287 void *install_configuration_table; 288 void *load_image; 289 void *start_image; 290 void *exit; 291 void *unload_image; 292 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 293 void *get_next_monotonic_count; 294 void *stall; 295 void *set_watchdog_timer; 296 void *connect_controller; 297 void *disconnect_controller; 298 void *open_protocol; 299 void *close_protocol; 300 void *open_protocol_information; 301 void *protocols_per_handle; 302 void *locate_handle_buffer; 303 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 304 void *install_multiple_protocol_interfaces; 305 void *uninstall_multiple_protocol_interfaces; 306 void *calculate_crc32; 307 void *copy_mem; 308 void *set_mem; 309 void *create_event_ex; 310 } efi_boot_services_t; 311 312 typedef enum { 313 EfiPciIoWidthUint8, 314 EfiPciIoWidthUint16, 315 EfiPciIoWidthUint32, 316 EfiPciIoWidthUint64, 317 EfiPciIoWidthFifoUint8, 318 EfiPciIoWidthFifoUint16, 319 EfiPciIoWidthFifoUint32, 320 EfiPciIoWidthFifoUint64, 321 EfiPciIoWidthFillUint8, 322 EfiPciIoWidthFillUint16, 323 EfiPciIoWidthFillUint32, 324 EfiPciIoWidthFillUint64, 325 EfiPciIoWidthMaximum 326 } EFI_PCI_IO_PROTOCOL_WIDTH; 327 328 typedef enum { 329 EfiPciIoAttributeOperationGet, 330 EfiPciIoAttributeOperationSet, 331 EfiPciIoAttributeOperationEnable, 332 EfiPciIoAttributeOperationDisable, 333 EfiPciIoAttributeOperationSupported, 334 EfiPciIoAttributeOperationMaximum 335 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 336 337 typedef struct { 338 u32 read; 339 u32 write; 340 } efi_pci_io_protocol_access_32_t; 341 342 typedef struct { 343 u64 read; 344 u64 write; 345 } efi_pci_io_protocol_access_64_t; 346 347 typedef struct { 348 void *read; 349 void *write; 350 } efi_pci_io_protocol_access_t; 351 352 typedef struct { 353 u32 poll_mem; 354 u32 poll_io; 355 efi_pci_io_protocol_access_32_t mem; 356 efi_pci_io_protocol_access_32_t io; 357 efi_pci_io_protocol_access_32_t pci; 358 u32 copy_mem; 359 u32 map; 360 u32 unmap; 361 u32 allocate_buffer; 362 u32 free_buffer; 363 u32 flush; 364 u32 get_location; 365 u32 attributes; 366 u32 get_bar_attributes; 367 u32 set_bar_attributes; 368 uint64_t romsize; 369 void *romimage; 370 } efi_pci_io_protocol_32; 371 372 typedef struct { 373 u64 poll_mem; 374 u64 poll_io; 375 efi_pci_io_protocol_access_64_t mem; 376 efi_pci_io_protocol_access_64_t io; 377 efi_pci_io_protocol_access_64_t pci; 378 u64 copy_mem; 379 u64 map; 380 u64 unmap; 381 u64 allocate_buffer; 382 u64 free_buffer; 383 u64 flush; 384 u64 get_location; 385 u64 attributes; 386 u64 get_bar_attributes; 387 u64 set_bar_attributes; 388 uint64_t romsize; 389 void *romimage; 390 } efi_pci_io_protocol_64; 391 392 typedef struct { 393 void *poll_mem; 394 void *poll_io; 395 efi_pci_io_protocol_access_t mem; 396 efi_pci_io_protocol_access_t io; 397 efi_pci_io_protocol_access_t pci; 398 void *copy_mem; 399 void *map; 400 void *unmap; 401 void *allocate_buffer; 402 void *free_buffer; 403 void *flush; 404 void *get_location; 405 void *attributes; 406 void *get_bar_attributes; 407 void *set_bar_attributes; 408 uint64_t romsize; 409 void *romimage; 410 } efi_pci_io_protocol; 411 412 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 413 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 414 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 415 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 416 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 417 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 418 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 420 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 421 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 422 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 423 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 424 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 425 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 426 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 427 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 428 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 429 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 430 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 431 432 /* 433 * Types and defines for EFI ResetSystem 434 */ 435 #define EFI_RESET_COLD 0 436 #define EFI_RESET_WARM 1 437 #define EFI_RESET_SHUTDOWN 2 438 439 /* 440 * EFI Runtime Services table 441 */ 442 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 443 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 444 445 typedef struct { 446 efi_table_hdr_t hdr; 447 u32 get_time; 448 u32 set_time; 449 u32 get_wakeup_time; 450 u32 set_wakeup_time; 451 u32 set_virtual_address_map; 452 u32 convert_pointer; 453 u32 get_variable; 454 u32 get_next_variable; 455 u32 set_variable; 456 u32 get_next_high_mono_count; 457 u32 reset_system; 458 u32 update_capsule; 459 u32 query_capsule_caps; 460 u32 query_variable_info; 461 } efi_runtime_services_32_t; 462 463 typedef struct { 464 efi_table_hdr_t hdr; 465 u64 get_time; 466 u64 set_time; 467 u64 get_wakeup_time; 468 u64 set_wakeup_time; 469 u64 set_virtual_address_map; 470 u64 convert_pointer; 471 u64 get_variable; 472 u64 get_next_variable; 473 u64 set_variable; 474 u64 get_next_high_mono_count; 475 u64 reset_system; 476 u64 update_capsule; 477 u64 query_capsule_caps; 478 u64 query_variable_info; 479 } efi_runtime_services_64_t; 480 481 typedef struct { 482 efi_table_hdr_t hdr; 483 void *get_time; 484 void *set_time; 485 void *get_wakeup_time; 486 void *set_wakeup_time; 487 void *set_virtual_address_map; 488 void *convert_pointer; 489 void *get_variable; 490 void *get_next_variable; 491 void *set_variable; 492 void *get_next_high_mono_count; 493 void *reset_system; 494 void *update_capsule; 495 void *query_capsule_caps; 496 void *query_variable_info; 497 } efi_runtime_services_t; 498 499 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 500 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 501 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 502 efi_time_t *tm); 503 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 504 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 505 unsigned long *data_size, void *data); 506 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 507 efi_guid_t *vendor); 508 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 509 u32 attr, unsigned long data_size, 510 void *data); 511 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 512 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 513 unsigned long data_size, efi_char16_t *data); 514 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 515 unsigned long descriptor_size, 516 u32 descriptor_version, 517 efi_memory_desc_t *virtual_map); 518 typedef efi_status_t efi_query_variable_info_t(u32 attr, 519 u64 *storage_space, 520 u64 *remaining_space, 521 u64 *max_variable_size); 522 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 523 unsigned long count, 524 unsigned long sg_list); 525 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 526 unsigned long count, 527 u64 *max_size, 528 int *reset_type); 529 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 530 unsigned long size, 531 bool nonblocking); 532 533 void efi_native_runtime_setup(void); 534 535 /* 536 * EFI Configuration Table and GUID definitions 537 */ 538 #define NULL_GUID \ 539 EFI_GUID(0x00000000, 0x0000, 0x0000, \ 540 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 541 542 #define MPS_TABLE_GUID \ 543 EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, \ 544 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 545 546 #define ACPI_TABLE_GUID \ 547 EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, \ 548 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 549 550 #define ACPI_20_TABLE_GUID \ 551 EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, \ 552 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 553 554 #define SMBIOS_TABLE_GUID \ 555 EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, \ 556 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 557 558 #define SMBIOS3_TABLE_GUID \ 559 EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, \ 560 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 561 562 #define SAL_SYSTEM_TABLE_GUID \ 563 EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, \ 564 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 565 566 #define HCDP_TABLE_GUID \ 567 EFI_GUID(0xf951938d, 0x620b, 0x42ef, \ 568 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 569 570 #define UGA_IO_PROTOCOL_GUID \ 571 EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, \ 572 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 573 574 #define EFI_GLOBAL_VARIABLE_GUID \ 575 EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, \ 576 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 577 578 #define UV_SYSTEM_TABLE_GUID \ 579 EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, \ 580 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 581 582 #define LINUX_EFI_CRASH_GUID \ 583 EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, \ 584 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 585 586 #define LOADED_IMAGE_PROTOCOL_GUID \ 587 EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, \ 588 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 589 590 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 591 EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, \ 592 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 593 594 #define EFI_UGA_PROTOCOL_GUID \ 595 EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, \ 596 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 597 598 #define EFI_PCI_IO_PROTOCOL_GUID \ 599 EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, \ 600 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 601 602 #define EFI_FILE_INFO_ID \ 603 EFI_GUID(0x9576e92, 0x6d3f, 0x11d2, \ 604 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 605 606 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 607 EFI_GUID(0xb122a263, 0x3661, 0x4f68, \ 608 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 609 610 #define EFI_FILE_SYSTEM_GUID \ 611 EFI_GUID(0x964e5b22, 0x6459, 0x11d2, \ 612 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 613 614 #define DEVICE_TREE_GUID \ 615 EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, \ 616 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 617 618 #define EFI_PROPERTIES_TABLE_GUID \ 619 EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, \ 620 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 621 622 #define EFI_RNG_PROTOCOL_GUID \ 623 EFI_GUID(0x3152bca5, 0xeade, 0x433d, \ 624 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 625 626 typedef struct { 627 efi_guid_t guid; 628 u64 table; 629 } efi_config_table_64_t; 630 631 typedef struct { 632 efi_guid_t guid; 633 u32 table; 634 } efi_config_table_32_t; 635 636 typedef struct { 637 efi_guid_t guid; 638 unsigned long table; 639 } efi_config_table_t; 640 641 typedef struct { 642 efi_guid_t guid; 643 const char *name; 644 unsigned long *ptr; 645 } efi_config_table_type_t; 646 647 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 648 649 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 650 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 651 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 652 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 653 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 654 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 655 656 typedef struct { 657 efi_table_hdr_t hdr; 658 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 659 u32 fw_revision; 660 u32 __pad1; 661 u64 con_in_handle; 662 u64 con_in; 663 u64 con_out_handle; 664 u64 con_out; 665 u64 stderr_handle; 666 u64 stderr; 667 u64 runtime; 668 u64 boottime; 669 u32 nr_tables; 670 u32 __pad2; 671 u64 tables; 672 } efi_system_table_64_t; 673 674 typedef struct { 675 efi_table_hdr_t hdr; 676 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 677 u32 fw_revision; 678 u32 con_in_handle; 679 u32 con_in; 680 u32 con_out_handle; 681 u32 con_out; 682 u32 stderr_handle; 683 u32 stderr; 684 u32 runtime; 685 u32 boottime; 686 u32 nr_tables; 687 u32 tables; 688 } efi_system_table_32_t; 689 690 typedef struct { 691 efi_table_hdr_t hdr; 692 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 693 u32 fw_revision; 694 unsigned long con_in_handle; 695 unsigned long con_in; 696 unsigned long con_out_handle; 697 unsigned long con_out; 698 unsigned long stderr_handle; 699 unsigned long stderr; 700 efi_runtime_services_t *runtime; 701 efi_boot_services_t *boottime; 702 unsigned long nr_tables; 703 unsigned long tables; 704 } efi_system_table_t; 705 706 struct efi_memory_map { 707 phys_addr_t phys_map; 708 void *map; 709 void *map_end; 710 int nr_map; 711 unsigned long desc_version; 712 unsigned long desc_size; 713 }; 714 715 struct efi_fdt_params { 716 u64 system_table; 717 u64 mmap; 718 u32 mmap_size; 719 u32 desc_size; 720 u32 desc_ver; 721 }; 722 723 typedef struct { 724 u32 revision; 725 u32 parent_handle; 726 u32 system_table; 727 u32 device_handle; 728 u32 file_path; 729 u32 reserved; 730 u32 load_options_size; 731 u32 load_options; 732 u32 image_base; 733 __aligned_u64 image_size; 734 unsigned int image_code_type; 735 unsigned int image_data_type; 736 unsigned long unload; 737 } efi_loaded_image_32_t; 738 739 typedef struct { 740 u32 revision; 741 u64 parent_handle; 742 u64 system_table; 743 u64 device_handle; 744 u64 file_path; 745 u64 reserved; 746 u32 load_options_size; 747 u64 load_options; 748 u64 image_base; 749 __aligned_u64 image_size; 750 unsigned int image_code_type; 751 unsigned int image_data_type; 752 unsigned long unload; 753 } efi_loaded_image_64_t; 754 755 typedef struct { 756 u32 revision; 757 void *parent_handle; 758 efi_system_table_t *system_table; 759 void *device_handle; 760 void *file_path; 761 void *reserved; 762 u32 load_options_size; 763 void *load_options; 764 void *image_base; 765 __aligned_u64 image_size; 766 unsigned int image_code_type; 767 unsigned int image_data_type; 768 unsigned long unload; 769 } efi_loaded_image_t; 770 771 772 typedef struct { 773 u64 size; 774 u64 file_size; 775 u64 phys_size; 776 efi_time_t create_time; 777 efi_time_t last_access_time; 778 efi_time_t modification_time; 779 __aligned_u64 attribute; 780 efi_char16_t filename[1]; 781 } efi_file_info_t; 782 783 typedef struct { 784 u64 revision; 785 u32 open; 786 u32 close; 787 u32 delete; 788 u32 read; 789 u32 write; 790 u32 get_position; 791 u32 set_position; 792 u32 get_info; 793 u32 set_info; 794 u32 flush; 795 } efi_file_handle_32_t; 796 797 typedef struct { 798 u64 revision; 799 u64 open; 800 u64 close; 801 u64 delete; 802 u64 read; 803 u64 write; 804 u64 get_position; 805 u64 set_position; 806 u64 get_info; 807 u64 set_info; 808 u64 flush; 809 } efi_file_handle_64_t; 810 811 typedef struct _efi_file_handle { 812 u64 revision; 813 efi_status_t (*open)(struct _efi_file_handle *, 814 struct _efi_file_handle **, 815 efi_char16_t *, u64, u64); 816 efi_status_t (*close)(struct _efi_file_handle *); 817 void *delete; 818 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 819 void *); 820 void *write; 821 void *get_position; 822 void *set_position; 823 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 824 unsigned long *, void *); 825 void *set_info; 826 void *flush; 827 } efi_file_handle_t; 828 829 typedef struct _efi_file_io_interface { 830 u64 revision; 831 int (*open_volume)(struct _efi_file_io_interface *, 832 efi_file_handle_t **); 833 } efi_file_io_interface_t; 834 835 #define EFI_FILE_MODE_READ 0x0000000000000001 836 #define EFI_FILE_MODE_WRITE 0x0000000000000002 837 #define EFI_FILE_MODE_CREATE 0x8000000000000000 838 839 typedef struct { 840 u32 version; 841 u32 length; 842 u64 memory_protection_attribute; 843 } efi_properties_table_t; 844 845 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 846 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 847 848 #define EFI_INVALID_TABLE_ADDR (~0UL) 849 850 /* 851 * All runtime access to EFI goes through this structure: 852 */ 853 extern struct efi { 854 efi_system_table_t *systab; /* EFI system table */ 855 unsigned int runtime_version; /* Runtime services version */ 856 unsigned long mps; /* MPS table */ 857 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 858 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 859 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 860 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 861 unsigned long sal_systab; /* SAL system table */ 862 unsigned long boot_info; /* boot info table */ 863 unsigned long hcdp; /* HCDP table */ 864 unsigned long uga; /* UGA table */ 865 unsigned long uv_systab; /* UV system table */ 866 unsigned long fw_vendor; /* fw_vendor */ 867 unsigned long runtime; /* runtime table */ 868 unsigned long config_table; /* config tables */ 869 unsigned long esrt; /* ESRT table */ 870 unsigned long properties_table; /* properties table */ 871 efi_get_time_t *get_time; 872 efi_set_time_t *set_time; 873 efi_get_wakeup_time_t *get_wakeup_time; 874 efi_set_wakeup_time_t *set_wakeup_time; 875 efi_get_variable_t *get_variable; 876 efi_get_next_variable_t *get_next_variable; 877 efi_set_variable_t *set_variable; 878 efi_set_variable_t *set_variable_nonblocking; 879 efi_query_variable_info_t *query_variable_info; 880 efi_query_variable_info_t *query_variable_info_nonblocking; 881 efi_update_capsule_t *update_capsule; 882 efi_query_capsule_caps_t *query_capsule_caps; 883 efi_get_next_high_mono_count_t *get_next_high_mono_count; 884 efi_reset_system_t *reset_system; 885 efi_set_virtual_address_map_t *set_virtual_address_map; 886 struct efi_memory_map *memmap; 887 unsigned long flags; 888 } efi; 889 890 static inline int 891 efi_guidcmp (efi_guid_t left, efi_guid_t right) 892 { 893 return memcmp(&left, &right, sizeof (efi_guid_t)); 894 } 895 896 static inline char * 897 efi_guid_to_str(efi_guid_t *guid, char *out) 898 { 899 sprintf(out, "%pUl", guid->b); 900 return out; 901 } 902 903 extern void efi_init (void); 904 extern void *efi_get_pal_addr (void); 905 extern void efi_map_pal_code (void); 906 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 907 extern void efi_gettimeofday (struct timespec *ts); 908 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 909 #ifdef CONFIG_X86 910 extern void efi_late_init(void); 911 extern void efi_free_boot_services(void); 912 extern efi_status_t efi_query_variable_store(u32 attributes, 913 unsigned long size, 914 bool nonblocking); 915 extern void efi_find_mirror(void); 916 #else 917 static inline void efi_late_init(void) {} 918 static inline void efi_free_boot_services(void) {} 919 920 static inline efi_status_t efi_query_variable_store(u32 attributes, 921 unsigned long size, 922 bool nonblocking) 923 { 924 return EFI_SUCCESS; 925 } 926 #endif 927 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 928 extern int efi_config_init(efi_config_table_type_t *arch_tables); 929 #ifdef CONFIG_EFI_ESRT 930 extern void __init efi_esrt_init(void); 931 #else 932 static inline void efi_esrt_init(void) { } 933 #endif 934 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 935 efi_config_table_type_t *arch_tables); 936 extern u64 efi_get_iobase (void); 937 extern u32 efi_mem_type (unsigned long phys_addr); 938 extern u64 efi_mem_attributes (unsigned long phys_addr); 939 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 940 extern int __init efi_uart_console_only (void); 941 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 942 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 943 extern void efi_initialize_iomem_resources(struct resource *code_resource, 944 struct resource *data_resource, struct resource *bss_resource); 945 extern void efi_get_time(struct timespec *now); 946 extern void efi_reserve_boot_services(void); 947 extern int efi_get_fdt_params(struct efi_fdt_params *params); 948 extern struct efi_memory_map memmap; 949 extern struct kobject *efi_kobj; 950 951 extern int efi_reboot_quirk_mode; 952 extern bool efi_poweroff_required(void); 953 954 #ifdef CONFIG_EFI_FAKE_MEMMAP 955 extern void __init efi_fake_memmap(void); 956 #else 957 static inline void efi_fake_memmap(void) { } 958 #endif 959 960 /* Iterate through an efi_memory_map */ 961 #define for_each_efi_memory_desc(m, md) \ 962 for ((md) = (m)->map; \ 963 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ 964 (md) = (void *)(md) + (m)->desc_size) 965 966 /* 967 * Format an EFI memory descriptor's type and attributes to a user-provided 968 * character buffer, as per snprintf(), and return the buffer. 969 */ 970 char * __init efi_md_typeattr_format(char *buf, size_t size, 971 const efi_memory_desc_t *md); 972 973 /** 974 * efi_range_is_wc - check the WC bit on an address range 975 * @start: starting kvirt address 976 * @len: length of range 977 * 978 * Consult the EFI memory map and make sure it's ok to set this range WC. 979 * Returns true or false. 980 */ 981 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 982 { 983 unsigned long i; 984 985 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 986 unsigned long paddr = __pa(start + i); 987 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 988 return 0; 989 } 990 /* The range checked out */ 991 return 1; 992 } 993 994 #ifdef CONFIG_EFI_PCDP 995 extern int __init efi_setup_pcdp_console(char *); 996 #endif 997 998 /* 999 * We play games with efi_enabled so that the compiler will, if 1000 * possible, remove EFI-related code altogether. 1001 */ 1002 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1003 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ 1004 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1005 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1006 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1007 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1008 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1009 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1010 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1011 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1012 1013 #ifdef CONFIG_EFI 1014 /* 1015 * Test whether the above EFI_* bits are enabled. 1016 */ 1017 static inline bool efi_enabled(int feature) 1018 { 1019 return test_bit(feature, &efi.flags) != 0; 1020 } 1021 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1022 #else 1023 static inline bool efi_enabled(int feature) 1024 { 1025 return false; 1026 } 1027 static inline void 1028 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1029 #endif 1030 1031 /* 1032 * Variable Attributes 1033 */ 1034 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1035 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1036 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1037 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1038 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1039 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1040 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1041 1042 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1043 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1044 EFI_VARIABLE_RUNTIME_ACCESS | \ 1045 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1046 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1047 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1048 EFI_VARIABLE_APPEND_WRITE) 1049 /* 1050 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1051 * not including trailing NUL 1052 */ 1053 #define EFI_VARIABLE_GUID_LEN 36 1054 1055 /* 1056 * The type of search to perform when calling boottime->locate_handle 1057 */ 1058 #define EFI_LOCATE_ALL_HANDLES 0 1059 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1060 #define EFI_LOCATE_BY_PROTOCOL 2 1061 1062 /* 1063 * EFI Device Path information 1064 */ 1065 #define EFI_DEV_HW 0x01 1066 #define EFI_DEV_PCI 1 1067 #define EFI_DEV_PCCARD 2 1068 #define EFI_DEV_MEM_MAPPED 3 1069 #define EFI_DEV_VENDOR 4 1070 #define EFI_DEV_CONTROLLER 5 1071 #define EFI_DEV_ACPI 0x02 1072 #define EFI_DEV_BASIC_ACPI 1 1073 #define EFI_DEV_EXPANDED_ACPI 2 1074 #define EFI_DEV_MSG 0x03 1075 #define EFI_DEV_MSG_ATAPI 1 1076 #define EFI_DEV_MSG_SCSI 2 1077 #define EFI_DEV_MSG_FC 3 1078 #define EFI_DEV_MSG_1394 4 1079 #define EFI_DEV_MSG_USB 5 1080 #define EFI_DEV_MSG_USB_CLASS 15 1081 #define EFI_DEV_MSG_I20 6 1082 #define EFI_DEV_MSG_MAC 11 1083 #define EFI_DEV_MSG_IPV4 12 1084 #define EFI_DEV_MSG_IPV6 13 1085 #define EFI_DEV_MSG_INFINIBAND 9 1086 #define EFI_DEV_MSG_UART 14 1087 #define EFI_DEV_MSG_VENDOR 10 1088 #define EFI_DEV_MEDIA 0x04 1089 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1090 #define EFI_DEV_MEDIA_CDROM 2 1091 #define EFI_DEV_MEDIA_VENDOR 3 1092 #define EFI_DEV_MEDIA_FILE 4 1093 #define EFI_DEV_MEDIA_PROTOCOL 5 1094 #define EFI_DEV_BIOS_BOOT 0x05 1095 #define EFI_DEV_END_PATH 0x7F 1096 #define EFI_DEV_END_PATH2 0xFF 1097 #define EFI_DEV_END_INSTANCE 0x01 1098 #define EFI_DEV_END_ENTIRE 0xFF 1099 1100 struct efi_generic_dev_path { 1101 u8 type; 1102 u8 sub_type; 1103 u16 length; 1104 } __attribute ((packed)); 1105 1106 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1107 { 1108 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1109 *addr &= PAGE_MASK; 1110 } 1111 1112 /* 1113 * EFI Variable support. 1114 * 1115 * Different firmware drivers can expose their EFI-like variables using 1116 * the following. 1117 */ 1118 1119 struct efivar_operations { 1120 efi_get_variable_t *get_variable; 1121 efi_get_next_variable_t *get_next_variable; 1122 efi_set_variable_t *set_variable; 1123 efi_set_variable_t *set_variable_nonblocking; 1124 efi_query_variable_store_t *query_variable_store; 1125 }; 1126 1127 struct efivars { 1128 /* 1129 * ->lock protects two things: 1130 * 1) efivarfs_list and efivars_sysfs_list 1131 * 2) ->ops calls 1132 */ 1133 spinlock_t lock; 1134 struct kset *kset; 1135 struct kobject *kobject; 1136 const struct efivar_operations *ops; 1137 }; 1138 1139 /* 1140 * The maximum size of VariableName + Data = 1024 1141 * Therefore, it's reasonable to save that much 1142 * space in each part of the structure, 1143 * and we use a page for reading/writing. 1144 */ 1145 1146 #define EFI_VAR_NAME_LEN 1024 1147 1148 struct efi_variable { 1149 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1150 efi_guid_t VendorGuid; 1151 unsigned long DataSize; 1152 __u8 Data[1024]; 1153 efi_status_t Status; 1154 __u32 Attributes; 1155 } __attribute__((packed)); 1156 1157 struct efivar_entry { 1158 struct efi_variable var; 1159 struct list_head list; 1160 struct kobject kobj; 1161 bool scanning; 1162 bool deleting; 1163 }; 1164 1165 struct efi_simple_text_output_protocol_32 { 1166 u32 reset; 1167 u32 output_string; 1168 u32 test_string; 1169 }; 1170 1171 struct efi_simple_text_output_protocol_64 { 1172 u64 reset; 1173 u64 output_string; 1174 u64 test_string; 1175 }; 1176 1177 struct efi_simple_text_output_protocol { 1178 void *reset; 1179 efi_status_t (*output_string)(void *, void *); 1180 void *test_string; 1181 }; 1182 1183 extern struct list_head efivar_sysfs_list; 1184 1185 static inline void 1186 efivar_unregister(struct efivar_entry *var) 1187 { 1188 kobject_put(&var->kobj); 1189 } 1190 1191 int efivars_register(struct efivars *efivars, 1192 const struct efivar_operations *ops, 1193 struct kobject *kobject); 1194 int efivars_unregister(struct efivars *efivars); 1195 struct kobject *efivars_kobject(void); 1196 1197 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1198 void *data, bool atomic, bool duplicates, 1199 struct list_head *head); 1200 1201 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1202 void efivar_entry_remove(struct efivar_entry *entry); 1203 1204 int __efivar_entry_delete(struct efivar_entry *entry); 1205 int efivar_entry_delete(struct efivar_entry *entry); 1206 1207 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1208 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1209 unsigned long *size, void *data); 1210 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1211 unsigned long *size, void *data); 1212 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1213 unsigned long size, void *data, struct list_head *head); 1214 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1215 unsigned long *size, void *data, bool *set); 1216 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1217 bool block, unsigned long size, void *data); 1218 1219 void efivar_entry_iter_begin(void); 1220 void efivar_entry_iter_end(void); 1221 1222 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1223 struct list_head *head, void *data, 1224 struct efivar_entry **prev); 1225 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1226 struct list_head *head, void *data); 1227 1228 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1229 struct list_head *head, bool remove); 1230 1231 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1232 unsigned long data_size); 1233 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1234 size_t len); 1235 1236 extern struct work_struct efivar_work; 1237 void efivar_run_worker(void); 1238 1239 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1240 int efivars_sysfs_init(void); 1241 1242 #define EFIVARS_DATA_SIZE_MAX 1024 1243 1244 #endif /* CONFIG_EFI_VARS */ 1245 1246 #ifdef CONFIG_EFI_RUNTIME_MAP 1247 int efi_runtime_map_init(struct kobject *); 1248 void efi_runtime_map_setup(void *, int, u32); 1249 int efi_get_runtime_map_size(void); 1250 int efi_get_runtime_map_desc_size(void); 1251 int efi_runtime_map_copy(void *buf, size_t bufsz); 1252 #else 1253 static inline int efi_runtime_map_init(struct kobject *kobj) 1254 { 1255 return 0; 1256 } 1257 1258 static inline void 1259 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1260 1261 static inline int efi_get_runtime_map_size(void) 1262 { 1263 return 0; 1264 } 1265 1266 static inline int efi_get_runtime_map_desc_size(void) 1267 { 1268 return 0; 1269 } 1270 1271 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1272 { 1273 return 0; 1274 } 1275 1276 #endif 1277 1278 /* prototypes shared between arch specific and generic stub code */ 1279 1280 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1281 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1282 1283 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1284 1285 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1286 unsigned long addr); 1287 1288 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1289 efi_loaded_image_t *image, int *cmd_line_len); 1290 1291 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1292 efi_memory_desc_t **map, 1293 unsigned long *map_size, 1294 unsigned long *desc_size, 1295 u32 *desc_ver, 1296 unsigned long *key_ptr); 1297 1298 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1299 unsigned long size, unsigned long align, 1300 unsigned long *addr); 1301 1302 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1303 unsigned long size, unsigned long align, 1304 unsigned long *addr, unsigned long max); 1305 1306 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1307 unsigned long *image_addr, 1308 unsigned long image_size, 1309 unsigned long alloc_size, 1310 unsigned long preferred_addr, 1311 unsigned long alignment); 1312 1313 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1314 efi_loaded_image_t *image, 1315 char *cmd_line, char *option_string, 1316 unsigned long max_addr, 1317 unsigned long *load_addr, 1318 unsigned long *load_size); 1319 1320 efi_status_t efi_parse_options(char *cmdline); 1321 1322 bool efi_runtime_disabled(void); 1323 #endif /* _LINUX_EFI_H */ 1324