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_MORE_RELIABLE \ 101 ((u64)0x0000000000010000ULL) /* higher reliability */ 102 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 103 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 104 105 #define EFI_PAGE_SHIFT 12 106 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 107 108 typedef struct { 109 u32 type; 110 u32 pad; 111 u64 phys_addr; 112 u64 virt_addr; 113 u64 num_pages; 114 u64 attribute; 115 } efi_memory_desc_t; 116 117 typedef struct { 118 efi_guid_t guid; 119 u32 headersize; 120 u32 flags; 121 u32 imagesize; 122 } efi_capsule_header_t; 123 124 /* 125 * Allocation types for calls to boottime->allocate_pages. 126 */ 127 #define EFI_ALLOCATE_ANY_PAGES 0 128 #define EFI_ALLOCATE_MAX_ADDRESS 1 129 #define EFI_ALLOCATE_ADDRESS 2 130 #define EFI_MAX_ALLOCATE_TYPE 3 131 132 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 133 134 /* 135 * Types and defines for Time Services 136 */ 137 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 138 #define EFI_TIME_IN_DAYLIGHT 0x2 139 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 140 141 typedef struct { 142 u16 year; 143 u8 month; 144 u8 day; 145 u8 hour; 146 u8 minute; 147 u8 second; 148 u8 pad1; 149 u32 nanosecond; 150 s16 timezone; 151 u8 daylight; 152 u8 pad2; 153 } efi_time_t; 154 155 typedef struct { 156 u32 resolution; 157 u32 accuracy; 158 u8 sets_to_zero; 159 } efi_time_cap_t; 160 161 typedef struct { 162 efi_table_hdr_t hdr; 163 u32 raise_tpl; 164 u32 restore_tpl; 165 u32 allocate_pages; 166 u32 free_pages; 167 u32 get_memory_map; 168 u32 allocate_pool; 169 u32 free_pool; 170 u32 create_event; 171 u32 set_timer; 172 u32 wait_for_event; 173 u32 signal_event; 174 u32 close_event; 175 u32 check_event; 176 u32 install_protocol_interface; 177 u32 reinstall_protocol_interface; 178 u32 uninstall_protocol_interface; 179 u32 handle_protocol; 180 u32 __reserved; 181 u32 register_protocol_notify; 182 u32 locate_handle; 183 u32 locate_device_path; 184 u32 install_configuration_table; 185 u32 load_image; 186 u32 start_image; 187 u32 exit; 188 u32 unload_image; 189 u32 exit_boot_services; 190 u32 get_next_monotonic_count; 191 u32 stall; 192 u32 set_watchdog_timer; 193 u32 connect_controller; 194 u32 disconnect_controller; 195 u32 open_protocol; 196 u32 close_protocol; 197 u32 open_protocol_information; 198 u32 protocols_per_handle; 199 u32 locate_handle_buffer; 200 u32 locate_protocol; 201 u32 install_multiple_protocol_interfaces; 202 u32 uninstall_multiple_protocol_interfaces; 203 u32 calculate_crc32; 204 u32 copy_mem; 205 u32 set_mem; 206 u32 create_event_ex; 207 } __packed efi_boot_services_32_t; 208 209 typedef struct { 210 efi_table_hdr_t hdr; 211 u64 raise_tpl; 212 u64 restore_tpl; 213 u64 allocate_pages; 214 u64 free_pages; 215 u64 get_memory_map; 216 u64 allocate_pool; 217 u64 free_pool; 218 u64 create_event; 219 u64 set_timer; 220 u64 wait_for_event; 221 u64 signal_event; 222 u64 close_event; 223 u64 check_event; 224 u64 install_protocol_interface; 225 u64 reinstall_protocol_interface; 226 u64 uninstall_protocol_interface; 227 u64 handle_protocol; 228 u64 __reserved; 229 u64 register_protocol_notify; 230 u64 locate_handle; 231 u64 locate_device_path; 232 u64 install_configuration_table; 233 u64 load_image; 234 u64 start_image; 235 u64 exit; 236 u64 unload_image; 237 u64 exit_boot_services; 238 u64 get_next_monotonic_count; 239 u64 stall; 240 u64 set_watchdog_timer; 241 u64 connect_controller; 242 u64 disconnect_controller; 243 u64 open_protocol; 244 u64 close_protocol; 245 u64 open_protocol_information; 246 u64 protocols_per_handle; 247 u64 locate_handle_buffer; 248 u64 locate_protocol; 249 u64 install_multiple_protocol_interfaces; 250 u64 uninstall_multiple_protocol_interfaces; 251 u64 calculate_crc32; 252 u64 copy_mem; 253 u64 set_mem; 254 u64 create_event_ex; 255 } __packed efi_boot_services_64_t; 256 257 /* 258 * EFI Boot Services table 259 */ 260 typedef struct { 261 efi_table_hdr_t hdr; 262 void *raise_tpl; 263 void *restore_tpl; 264 efi_status_t (*allocate_pages)(int, int, unsigned long, 265 efi_physical_addr_t *); 266 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 267 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 268 unsigned long *, u32 *); 269 efi_status_t (*allocate_pool)(int, unsigned long, void **); 270 efi_status_t (*free_pool)(void *); 271 void *create_event; 272 void *set_timer; 273 void *wait_for_event; 274 void *signal_event; 275 void *close_event; 276 void *check_event; 277 void *install_protocol_interface; 278 void *reinstall_protocol_interface; 279 void *uninstall_protocol_interface; 280 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 281 void *__reserved; 282 void *register_protocol_notify; 283 void *locate_handle; 284 void *locate_device_path; 285 void *install_configuration_table; 286 void *load_image; 287 void *start_image; 288 void *exit; 289 void *unload_image; 290 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 291 void *get_next_monotonic_count; 292 void *stall; 293 void *set_watchdog_timer; 294 void *connect_controller; 295 void *disconnect_controller; 296 void *open_protocol; 297 void *close_protocol; 298 void *open_protocol_information; 299 void *protocols_per_handle; 300 void *locate_handle_buffer; 301 void *locate_protocol; 302 void *install_multiple_protocol_interfaces; 303 void *uninstall_multiple_protocol_interfaces; 304 void *calculate_crc32; 305 void *copy_mem; 306 void *set_mem; 307 void *create_event_ex; 308 } efi_boot_services_t; 309 310 typedef enum { 311 EfiPciIoWidthUint8, 312 EfiPciIoWidthUint16, 313 EfiPciIoWidthUint32, 314 EfiPciIoWidthUint64, 315 EfiPciIoWidthFifoUint8, 316 EfiPciIoWidthFifoUint16, 317 EfiPciIoWidthFifoUint32, 318 EfiPciIoWidthFifoUint64, 319 EfiPciIoWidthFillUint8, 320 EfiPciIoWidthFillUint16, 321 EfiPciIoWidthFillUint32, 322 EfiPciIoWidthFillUint64, 323 EfiPciIoWidthMaximum 324 } EFI_PCI_IO_PROTOCOL_WIDTH; 325 326 typedef enum { 327 EfiPciIoAttributeOperationGet, 328 EfiPciIoAttributeOperationSet, 329 EfiPciIoAttributeOperationEnable, 330 EfiPciIoAttributeOperationDisable, 331 EfiPciIoAttributeOperationSupported, 332 EfiPciIoAttributeOperationMaximum 333 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 334 335 typedef struct { 336 u32 read; 337 u32 write; 338 } efi_pci_io_protocol_access_32_t; 339 340 typedef struct { 341 u64 read; 342 u64 write; 343 } efi_pci_io_protocol_access_64_t; 344 345 typedef struct { 346 void *read; 347 void *write; 348 } efi_pci_io_protocol_access_t; 349 350 typedef struct { 351 u32 poll_mem; 352 u32 poll_io; 353 efi_pci_io_protocol_access_32_t mem; 354 efi_pci_io_protocol_access_32_t io; 355 efi_pci_io_protocol_access_32_t pci; 356 u32 copy_mem; 357 u32 map; 358 u32 unmap; 359 u32 allocate_buffer; 360 u32 free_buffer; 361 u32 flush; 362 u32 get_location; 363 u32 attributes; 364 u32 get_bar_attributes; 365 u32 set_bar_attributes; 366 uint64_t romsize; 367 void *romimage; 368 } efi_pci_io_protocol_32; 369 370 typedef struct { 371 u64 poll_mem; 372 u64 poll_io; 373 efi_pci_io_protocol_access_64_t mem; 374 efi_pci_io_protocol_access_64_t io; 375 efi_pci_io_protocol_access_64_t pci; 376 u64 copy_mem; 377 u64 map; 378 u64 unmap; 379 u64 allocate_buffer; 380 u64 free_buffer; 381 u64 flush; 382 u64 get_location; 383 u64 attributes; 384 u64 get_bar_attributes; 385 u64 set_bar_attributes; 386 uint64_t romsize; 387 void *romimage; 388 } efi_pci_io_protocol_64; 389 390 typedef struct { 391 void *poll_mem; 392 void *poll_io; 393 efi_pci_io_protocol_access_t mem; 394 efi_pci_io_protocol_access_t io; 395 efi_pci_io_protocol_access_t pci; 396 void *copy_mem; 397 void *map; 398 void *unmap; 399 void *allocate_buffer; 400 void *free_buffer; 401 void *flush; 402 void *get_location; 403 void *attributes; 404 void *get_bar_attributes; 405 void *set_bar_attributes; 406 uint64_t romsize; 407 void *romimage; 408 } efi_pci_io_protocol; 409 410 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 411 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 412 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 413 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 414 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 415 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 416 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 417 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 418 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 420 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 421 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 422 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 423 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 424 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 425 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 426 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 427 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 428 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 429 430 /* 431 * Types and defines for EFI ResetSystem 432 */ 433 #define EFI_RESET_COLD 0 434 #define EFI_RESET_WARM 1 435 #define EFI_RESET_SHUTDOWN 2 436 437 /* 438 * EFI Runtime Services table 439 */ 440 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 441 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 442 443 typedef struct { 444 efi_table_hdr_t hdr; 445 u32 get_time; 446 u32 set_time; 447 u32 get_wakeup_time; 448 u32 set_wakeup_time; 449 u32 set_virtual_address_map; 450 u32 convert_pointer; 451 u32 get_variable; 452 u32 get_next_variable; 453 u32 set_variable; 454 u32 get_next_high_mono_count; 455 u32 reset_system; 456 u32 update_capsule; 457 u32 query_capsule_caps; 458 u32 query_variable_info; 459 } efi_runtime_services_32_t; 460 461 typedef struct { 462 efi_table_hdr_t hdr; 463 u64 get_time; 464 u64 set_time; 465 u64 get_wakeup_time; 466 u64 set_wakeup_time; 467 u64 set_virtual_address_map; 468 u64 convert_pointer; 469 u64 get_variable; 470 u64 get_next_variable; 471 u64 set_variable; 472 u64 get_next_high_mono_count; 473 u64 reset_system; 474 u64 update_capsule; 475 u64 query_capsule_caps; 476 u64 query_variable_info; 477 } efi_runtime_services_64_t; 478 479 typedef struct { 480 efi_table_hdr_t hdr; 481 void *get_time; 482 void *set_time; 483 void *get_wakeup_time; 484 void *set_wakeup_time; 485 void *set_virtual_address_map; 486 void *convert_pointer; 487 void *get_variable; 488 void *get_next_variable; 489 void *set_variable; 490 void *get_next_high_mono_count; 491 void *reset_system; 492 void *update_capsule; 493 void *query_capsule_caps; 494 void *query_variable_info; 495 } efi_runtime_services_t; 496 497 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 498 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 499 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 500 efi_time_t *tm); 501 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 502 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 503 unsigned long *data_size, void *data); 504 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 505 efi_guid_t *vendor); 506 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 507 u32 attr, unsigned long data_size, 508 void *data); 509 typedef efi_status_t 510 efi_set_variable_nonblocking_t(efi_char16_t *name, efi_guid_t *vendor, 511 u32 attr, unsigned long data_size, void *data); 512 513 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 514 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 515 unsigned long data_size, efi_char16_t *data); 516 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 517 unsigned long descriptor_size, 518 u32 descriptor_version, 519 efi_memory_desc_t *virtual_map); 520 typedef efi_status_t efi_query_variable_info_t(u32 attr, 521 u64 *storage_space, 522 u64 *remaining_space, 523 u64 *max_variable_size); 524 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 525 unsigned long count, 526 unsigned long sg_list); 527 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 528 unsigned long count, 529 u64 *max_size, 530 int *reset_type); 531 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size); 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, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ) 540 541 #define MPS_TABLE_GUID \ 542 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 543 544 #define ACPI_TABLE_GUID \ 545 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 546 547 #define ACPI_20_TABLE_GUID \ 548 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 ) 549 550 #define SMBIOS_TABLE_GUID \ 551 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 552 553 #define SMBIOS3_TABLE_GUID \ 554 EFI_GUID( 0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 ) 555 556 #define SAL_SYSTEM_TABLE_GUID \ 557 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 558 559 #define HCDP_TABLE_GUID \ 560 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 ) 561 562 #define UGA_IO_PROTOCOL_GUID \ 563 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 ) 564 565 #define EFI_GLOBAL_VARIABLE_GUID \ 566 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c ) 567 568 #define UV_SYSTEM_TABLE_GUID \ 569 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 ) 570 571 #define LINUX_EFI_CRASH_GUID \ 572 EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 ) 573 574 #define LOADED_IMAGE_PROTOCOL_GUID \ 575 EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 576 577 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 578 EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a ) 579 580 #define EFI_UGA_PROTOCOL_GUID \ 581 EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 ) 582 583 #define EFI_PCI_IO_PROTOCOL_GUID \ 584 EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a ) 585 586 #define EFI_FILE_INFO_ID \ 587 EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 588 589 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 590 EFI_GUID( 0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 ) 591 592 #define EFI_FILE_SYSTEM_GUID \ 593 EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 594 595 #define DEVICE_TREE_GUID \ 596 EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 ) 597 598 typedef struct { 599 efi_guid_t guid; 600 u64 table; 601 } efi_config_table_64_t; 602 603 typedef struct { 604 efi_guid_t guid; 605 u32 table; 606 } efi_config_table_32_t; 607 608 typedef struct { 609 efi_guid_t guid; 610 unsigned long table; 611 } efi_config_table_t; 612 613 typedef struct { 614 efi_guid_t guid; 615 const char *name; 616 unsigned long *ptr; 617 } efi_config_table_type_t; 618 619 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 620 621 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 622 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 623 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 624 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 625 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 626 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 627 628 typedef struct { 629 efi_table_hdr_t hdr; 630 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 631 u32 fw_revision; 632 u32 __pad1; 633 u64 con_in_handle; 634 u64 con_in; 635 u64 con_out_handle; 636 u64 con_out; 637 u64 stderr_handle; 638 u64 stderr; 639 u64 runtime; 640 u64 boottime; 641 u32 nr_tables; 642 u32 __pad2; 643 u64 tables; 644 } efi_system_table_64_t; 645 646 typedef struct { 647 efi_table_hdr_t hdr; 648 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 649 u32 fw_revision; 650 u32 con_in_handle; 651 u32 con_in; 652 u32 con_out_handle; 653 u32 con_out; 654 u32 stderr_handle; 655 u32 stderr; 656 u32 runtime; 657 u32 boottime; 658 u32 nr_tables; 659 u32 tables; 660 } efi_system_table_32_t; 661 662 typedef struct { 663 efi_table_hdr_t hdr; 664 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 665 u32 fw_revision; 666 unsigned long con_in_handle; 667 unsigned long con_in; 668 unsigned long con_out_handle; 669 unsigned long con_out; 670 unsigned long stderr_handle; 671 unsigned long stderr; 672 efi_runtime_services_t *runtime; 673 efi_boot_services_t *boottime; 674 unsigned long nr_tables; 675 unsigned long tables; 676 } efi_system_table_t; 677 678 struct efi_memory_map { 679 void *phys_map; 680 void *map; 681 void *map_end; 682 int nr_map; 683 unsigned long desc_version; 684 unsigned long desc_size; 685 }; 686 687 struct efi_fdt_params { 688 u64 system_table; 689 u64 mmap; 690 u32 mmap_size; 691 u32 desc_size; 692 u32 desc_ver; 693 }; 694 695 typedef struct { 696 u32 revision; 697 u32 parent_handle; 698 u32 system_table; 699 u32 device_handle; 700 u32 file_path; 701 u32 reserved; 702 u32 load_options_size; 703 u32 load_options; 704 u32 image_base; 705 __aligned_u64 image_size; 706 unsigned int image_code_type; 707 unsigned int image_data_type; 708 unsigned long unload; 709 } efi_loaded_image_32_t; 710 711 typedef struct { 712 u32 revision; 713 u64 parent_handle; 714 u64 system_table; 715 u64 device_handle; 716 u64 file_path; 717 u64 reserved; 718 u32 load_options_size; 719 u64 load_options; 720 u64 image_base; 721 __aligned_u64 image_size; 722 unsigned int image_code_type; 723 unsigned int image_data_type; 724 unsigned long unload; 725 } efi_loaded_image_64_t; 726 727 typedef struct { 728 u32 revision; 729 void *parent_handle; 730 efi_system_table_t *system_table; 731 void *device_handle; 732 void *file_path; 733 void *reserved; 734 u32 load_options_size; 735 void *load_options; 736 void *image_base; 737 __aligned_u64 image_size; 738 unsigned int image_code_type; 739 unsigned int image_data_type; 740 unsigned long unload; 741 } efi_loaded_image_t; 742 743 744 typedef struct { 745 u64 size; 746 u64 file_size; 747 u64 phys_size; 748 efi_time_t create_time; 749 efi_time_t last_access_time; 750 efi_time_t modification_time; 751 __aligned_u64 attribute; 752 efi_char16_t filename[1]; 753 } efi_file_info_t; 754 755 typedef struct { 756 u64 revision; 757 u32 open; 758 u32 close; 759 u32 delete; 760 u32 read; 761 u32 write; 762 u32 get_position; 763 u32 set_position; 764 u32 get_info; 765 u32 set_info; 766 u32 flush; 767 } efi_file_handle_32_t; 768 769 typedef struct { 770 u64 revision; 771 u64 open; 772 u64 close; 773 u64 delete; 774 u64 read; 775 u64 write; 776 u64 get_position; 777 u64 set_position; 778 u64 get_info; 779 u64 set_info; 780 u64 flush; 781 } efi_file_handle_64_t; 782 783 typedef struct _efi_file_handle { 784 u64 revision; 785 efi_status_t (*open)(struct _efi_file_handle *, 786 struct _efi_file_handle **, 787 efi_char16_t *, u64, u64); 788 efi_status_t (*close)(struct _efi_file_handle *); 789 void *delete; 790 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 791 void *); 792 void *write; 793 void *get_position; 794 void *set_position; 795 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 796 unsigned long *, void *); 797 void *set_info; 798 void *flush; 799 } efi_file_handle_t; 800 801 typedef struct _efi_file_io_interface { 802 u64 revision; 803 int (*open_volume)(struct _efi_file_io_interface *, 804 efi_file_handle_t **); 805 } efi_file_io_interface_t; 806 807 #define EFI_FILE_MODE_READ 0x0000000000000001 808 #define EFI_FILE_MODE_WRITE 0x0000000000000002 809 #define EFI_FILE_MODE_CREATE 0x8000000000000000 810 811 #define EFI_INVALID_TABLE_ADDR (~0UL) 812 813 /* 814 * All runtime access to EFI goes through this structure: 815 */ 816 extern struct efi { 817 efi_system_table_t *systab; /* EFI system table */ 818 unsigned int runtime_version; /* Runtime services version */ 819 unsigned long mps; /* MPS table */ 820 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 821 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 822 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 823 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 824 unsigned long sal_systab; /* SAL system table */ 825 unsigned long boot_info; /* boot info table */ 826 unsigned long hcdp; /* HCDP table */ 827 unsigned long uga; /* UGA table */ 828 unsigned long uv_systab; /* UV system table */ 829 unsigned long fw_vendor; /* fw_vendor */ 830 unsigned long runtime; /* runtime table */ 831 unsigned long config_table; /* config tables */ 832 unsigned long esrt; /* ESRT table */ 833 efi_get_time_t *get_time; 834 efi_set_time_t *set_time; 835 efi_get_wakeup_time_t *get_wakeup_time; 836 efi_set_wakeup_time_t *set_wakeup_time; 837 efi_get_variable_t *get_variable; 838 efi_get_next_variable_t *get_next_variable; 839 efi_set_variable_t *set_variable; 840 efi_set_variable_nonblocking_t *set_variable_nonblocking; 841 efi_query_variable_info_t *query_variable_info; 842 efi_update_capsule_t *update_capsule; 843 efi_query_capsule_caps_t *query_capsule_caps; 844 efi_get_next_high_mono_count_t *get_next_high_mono_count; 845 efi_reset_system_t *reset_system; 846 efi_set_virtual_address_map_t *set_virtual_address_map; 847 struct efi_memory_map *memmap; 848 unsigned long flags; 849 } efi; 850 851 static inline int 852 efi_guidcmp (efi_guid_t left, efi_guid_t right) 853 { 854 return memcmp(&left, &right, sizeof (efi_guid_t)); 855 } 856 857 static inline char * 858 efi_guid_to_str(efi_guid_t *guid, char *out) 859 { 860 sprintf(out, "%pUl", guid->b); 861 return out; 862 } 863 864 extern void efi_init (void); 865 extern void *efi_get_pal_addr (void); 866 extern void efi_map_pal_code (void); 867 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 868 extern void efi_gettimeofday (struct timespec *ts); 869 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 870 #ifdef CONFIG_X86 871 extern void efi_late_init(void); 872 extern void efi_free_boot_services(void); 873 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size); 874 extern void efi_find_mirror(void); 875 #else 876 static inline void efi_late_init(void) {} 877 static inline void efi_free_boot_services(void) {} 878 879 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) 880 { 881 return EFI_SUCCESS; 882 } 883 #endif 884 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 885 extern int efi_config_init(efi_config_table_type_t *arch_tables); 886 #ifdef CONFIG_EFI_ESRT 887 extern void __init efi_esrt_init(void); 888 #else 889 static inline void efi_esrt_init(void) { } 890 #endif 891 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 892 efi_config_table_type_t *arch_tables); 893 extern u64 efi_get_iobase (void); 894 extern u32 efi_mem_type (unsigned long phys_addr); 895 extern u64 efi_mem_attributes (unsigned long phys_addr); 896 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 897 extern int __init efi_uart_console_only (void); 898 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 899 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 900 extern void efi_initialize_iomem_resources(struct resource *code_resource, 901 struct resource *data_resource, struct resource *bss_resource); 902 extern void efi_get_time(struct timespec *now); 903 extern void efi_reserve_boot_services(void); 904 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose); 905 extern struct efi_memory_map memmap; 906 extern struct kobject *efi_kobj; 907 908 extern int efi_reboot_quirk_mode; 909 extern bool efi_poweroff_required(void); 910 911 /* Iterate through an efi_memory_map */ 912 #define for_each_efi_memory_desc(m, md) \ 913 for ((md) = (m)->map; \ 914 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ 915 (md) = (void *)(md) + (m)->desc_size) 916 917 /* 918 * Format an EFI memory descriptor's type and attributes to a user-provided 919 * character buffer, as per snprintf(), and return the buffer. 920 */ 921 char * __init efi_md_typeattr_format(char *buf, size_t size, 922 const efi_memory_desc_t *md); 923 924 /** 925 * efi_range_is_wc - check the WC bit on an address range 926 * @start: starting kvirt address 927 * @len: length of range 928 * 929 * Consult the EFI memory map and make sure it's ok to set this range WC. 930 * Returns true or false. 931 */ 932 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 933 { 934 unsigned long i; 935 936 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 937 unsigned long paddr = __pa(start + i); 938 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 939 return 0; 940 } 941 /* The range checked out */ 942 return 1; 943 } 944 945 #ifdef CONFIG_EFI_PCDP 946 extern int __init efi_setup_pcdp_console(char *); 947 #endif 948 949 /* 950 * We play games with efi_enabled so that the compiler will, if 951 * possible, remove EFI-related code altogether. 952 */ 953 #define EFI_BOOT 0 /* Were we booted from EFI? */ 954 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ 955 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 956 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 957 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 958 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 959 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 960 #define EFI_ARCH_1 7 /* First arch-specific bit */ 961 #define EFI_DBG 8 /* Print additional debug info at runtime */ 962 963 #ifdef CONFIG_EFI 964 /* 965 * Test whether the above EFI_* bits are enabled. 966 */ 967 static inline bool efi_enabled(int feature) 968 { 969 return test_bit(feature, &efi.flags) != 0; 970 } 971 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 972 #else 973 static inline bool efi_enabled(int feature) 974 { 975 return false; 976 } 977 static inline void 978 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 979 #endif 980 981 /* 982 * Variable Attributes 983 */ 984 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 985 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 986 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 987 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 988 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 989 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 990 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 991 992 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 993 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 994 EFI_VARIABLE_RUNTIME_ACCESS | \ 995 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 996 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 997 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 998 EFI_VARIABLE_APPEND_WRITE) 999 /* 1000 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1001 * not including trailing NUL 1002 */ 1003 #define EFI_VARIABLE_GUID_LEN 36 1004 1005 /* 1006 * The type of search to perform when calling boottime->locate_handle 1007 */ 1008 #define EFI_LOCATE_ALL_HANDLES 0 1009 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1010 #define EFI_LOCATE_BY_PROTOCOL 2 1011 1012 /* 1013 * EFI Device Path information 1014 */ 1015 #define EFI_DEV_HW 0x01 1016 #define EFI_DEV_PCI 1 1017 #define EFI_DEV_PCCARD 2 1018 #define EFI_DEV_MEM_MAPPED 3 1019 #define EFI_DEV_VENDOR 4 1020 #define EFI_DEV_CONTROLLER 5 1021 #define EFI_DEV_ACPI 0x02 1022 #define EFI_DEV_BASIC_ACPI 1 1023 #define EFI_DEV_EXPANDED_ACPI 2 1024 #define EFI_DEV_MSG 0x03 1025 #define EFI_DEV_MSG_ATAPI 1 1026 #define EFI_DEV_MSG_SCSI 2 1027 #define EFI_DEV_MSG_FC 3 1028 #define EFI_DEV_MSG_1394 4 1029 #define EFI_DEV_MSG_USB 5 1030 #define EFI_DEV_MSG_USB_CLASS 15 1031 #define EFI_DEV_MSG_I20 6 1032 #define EFI_DEV_MSG_MAC 11 1033 #define EFI_DEV_MSG_IPV4 12 1034 #define EFI_DEV_MSG_IPV6 13 1035 #define EFI_DEV_MSG_INFINIBAND 9 1036 #define EFI_DEV_MSG_UART 14 1037 #define EFI_DEV_MSG_VENDOR 10 1038 #define EFI_DEV_MEDIA 0x04 1039 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1040 #define EFI_DEV_MEDIA_CDROM 2 1041 #define EFI_DEV_MEDIA_VENDOR 3 1042 #define EFI_DEV_MEDIA_FILE 4 1043 #define EFI_DEV_MEDIA_PROTOCOL 5 1044 #define EFI_DEV_BIOS_BOOT 0x05 1045 #define EFI_DEV_END_PATH 0x7F 1046 #define EFI_DEV_END_PATH2 0xFF 1047 #define EFI_DEV_END_INSTANCE 0x01 1048 #define EFI_DEV_END_ENTIRE 0xFF 1049 1050 struct efi_generic_dev_path { 1051 u8 type; 1052 u8 sub_type; 1053 u16 length; 1054 } __attribute ((packed)); 1055 1056 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1057 { 1058 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1059 *addr &= PAGE_MASK; 1060 } 1061 1062 /* 1063 * EFI Variable support. 1064 * 1065 * Different firmware drivers can expose their EFI-like variables using 1066 * the following. 1067 */ 1068 1069 struct efivar_operations { 1070 efi_get_variable_t *get_variable; 1071 efi_get_next_variable_t *get_next_variable; 1072 efi_set_variable_t *set_variable; 1073 efi_set_variable_nonblocking_t *set_variable_nonblocking; 1074 efi_query_variable_store_t *query_variable_store; 1075 }; 1076 1077 struct efivars { 1078 /* 1079 * ->lock protects two things: 1080 * 1) efivarfs_list and efivars_sysfs_list 1081 * 2) ->ops calls 1082 */ 1083 spinlock_t lock; 1084 struct kset *kset; 1085 struct kobject *kobject; 1086 const struct efivar_operations *ops; 1087 }; 1088 1089 /* 1090 * The maximum size of VariableName + Data = 1024 1091 * Therefore, it's reasonable to save that much 1092 * space in each part of the structure, 1093 * and we use a page for reading/writing. 1094 */ 1095 1096 #define EFI_VAR_NAME_LEN 1024 1097 1098 struct efi_variable { 1099 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1100 efi_guid_t VendorGuid; 1101 unsigned long DataSize; 1102 __u8 Data[1024]; 1103 efi_status_t Status; 1104 __u32 Attributes; 1105 } __attribute__((packed)); 1106 1107 struct efivar_entry { 1108 struct efi_variable var; 1109 struct list_head list; 1110 struct kobject kobj; 1111 bool scanning; 1112 bool deleting; 1113 }; 1114 1115 struct efi_simple_text_output_protocol_32 { 1116 u32 reset; 1117 u32 output_string; 1118 u32 test_string; 1119 }; 1120 1121 struct efi_simple_text_output_protocol_64 { 1122 u64 reset; 1123 u64 output_string; 1124 u64 test_string; 1125 }; 1126 1127 struct efi_simple_text_output_protocol { 1128 void *reset; 1129 efi_status_t (*output_string)(void *, void *); 1130 void *test_string; 1131 }; 1132 1133 extern struct list_head efivar_sysfs_list; 1134 1135 static inline void 1136 efivar_unregister(struct efivar_entry *var) 1137 { 1138 kobject_put(&var->kobj); 1139 } 1140 1141 int efivars_register(struct efivars *efivars, 1142 const struct efivar_operations *ops, 1143 struct kobject *kobject); 1144 int efivars_unregister(struct efivars *efivars); 1145 struct kobject *efivars_kobject(void); 1146 1147 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1148 void *data, bool atomic, bool duplicates, 1149 struct list_head *head); 1150 1151 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1152 void efivar_entry_remove(struct efivar_entry *entry); 1153 1154 int __efivar_entry_delete(struct efivar_entry *entry); 1155 int efivar_entry_delete(struct efivar_entry *entry); 1156 1157 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1158 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1159 unsigned long *size, void *data); 1160 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1161 unsigned long *size, void *data); 1162 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1163 unsigned long size, void *data, struct list_head *head); 1164 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1165 unsigned long *size, void *data, bool *set); 1166 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1167 bool block, unsigned long size, void *data); 1168 1169 void efivar_entry_iter_begin(void); 1170 void efivar_entry_iter_end(void); 1171 1172 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1173 struct list_head *head, void *data, 1174 struct efivar_entry **prev); 1175 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1176 struct list_head *head, void *data); 1177 1178 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1179 struct list_head *head, bool remove); 1180 1181 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len); 1182 1183 extern struct work_struct efivar_work; 1184 void efivar_run_worker(void); 1185 1186 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1187 int efivars_sysfs_init(void); 1188 1189 #define EFIVARS_DATA_SIZE_MAX 1024 1190 1191 #endif /* CONFIG_EFI_VARS */ 1192 1193 #ifdef CONFIG_EFI_RUNTIME_MAP 1194 int efi_runtime_map_init(struct kobject *); 1195 void efi_runtime_map_setup(void *, int, u32); 1196 int efi_get_runtime_map_size(void); 1197 int efi_get_runtime_map_desc_size(void); 1198 int efi_runtime_map_copy(void *buf, size_t bufsz); 1199 #else 1200 static inline int efi_runtime_map_init(struct kobject *kobj) 1201 { 1202 return 0; 1203 } 1204 1205 static inline void 1206 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1207 1208 static inline int efi_get_runtime_map_size(void) 1209 { 1210 return 0; 1211 } 1212 1213 static inline int efi_get_runtime_map_desc_size(void) 1214 { 1215 return 0; 1216 } 1217 1218 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1219 { 1220 return 0; 1221 } 1222 1223 #endif 1224 1225 /* prototypes shared between arch specific and generic stub code */ 1226 1227 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1228 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1229 1230 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1231 1232 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1233 unsigned long addr); 1234 1235 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1236 efi_loaded_image_t *image, int *cmd_line_len); 1237 1238 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1239 efi_memory_desc_t **map, 1240 unsigned long *map_size, 1241 unsigned long *desc_size, 1242 u32 *desc_ver, 1243 unsigned long *key_ptr); 1244 1245 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1246 unsigned long size, unsigned long align, 1247 unsigned long *addr); 1248 1249 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1250 unsigned long size, unsigned long align, 1251 unsigned long *addr, unsigned long max); 1252 1253 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1254 unsigned long *image_addr, 1255 unsigned long image_size, 1256 unsigned long alloc_size, 1257 unsigned long preferred_addr, 1258 unsigned long alignment); 1259 1260 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1261 efi_loaded_image_t *image, 1262 char *cmd_line, char *option_string, 1263 unsigned long max_addr, 1264 unsigned long *load_addr, 1265 unsigned long *load_size); 1266 1267 efi_status_t efi_parse_options(char *cmdline); 1268 1269 bool efi_runtime_disabled(void); 1270 #endif /* _LINUX_EFI_H */ 1271