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 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_MAX_MEMORY_TYPE 14 89 90 /* Attribute values: */ 91 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 92 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 93 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 94 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 95 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 96 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 97 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 98 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 99 #define EFI_MEMORY_RUNTIME ((u64)0x8000000000000000ULL) /* range requires runtime mapping */ 100 #define EFI_MEMORY_DESCRIPTOR_VERSION 1 101 102 #define EFI_PAGE_SHIFT 12 103 #define EFI_PAGE_SIZE (1UL << EFI_PAGE_SHIFT) 104 105 typedef struct { 106 u32 type; 107 u32 pad; 108 u64 phys_addr; 109 u64 virt_addr; 110 u64 num_pages; 111 u64 attribute; 112 } efi_memory_desc_t; 113 114 typedef struct { 115 efi_guid_t guid; 116 u32 headersize; 117 u32 flags; 118 u32 imagesize; 119 } efi_capsule_header_t; 120 121 /* 122 * Allocation types for calls to boottime->allocate_pages. 123 */ 124 #define EFI_ALLOCATE_ANY_PAGES 0 125 #define EFI_ALLOCATE_MAX_ADDRESS 1 126 #define EFI_ALLOCATE_ADDRESS 2 127 #define EFI_MAX_ALLOCATE_TYPE 3 128 129 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 130 131 /* 132 * Types and defines for Time Services 133 */ 134 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 135 #define EFI_TIME_IN_DAYLIGHT 0x2 136 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 137 138 typedef struct { 139 u16 year; 140 u8 month; 141 u8 day; 142 u8 hour; 143 u8 minute; 144 u8 second; 145 u8 pad1; 146 u32 nanosecond; 147 s16 timezone; 148 u8 daylight; 149 u8 pad2; 150 } efi_time_t; 151 152 typedef struct { 153 u32 resolution; 154 u32 accuracy; 155 u8 sets_to_zero; 156 } efi_time_cap_t; 157 158 typedef struct { 159 efi_table_hdr_t hdr; 160 u32 raise_tpl; 161 u32 restore_tpl; 162 u32 allocate_pages; 163 u32 free_pages; 164 u32 get_memory_map; 165 u32 allocate_pool; 166 u32 free_pool; 167 u32 create_event; 168 u32 set_timer; 169 u32 wait_for_event; 170 u32 signal_event; 171 u32 close_event; 172 u32 check_event; 173 u32 install_protocol_interface; 174 u32 reinstall_protocol_interface; 175 u32 uninstall_protocol_interface; 176 u32 handle_protocol; 177 u32 __reserved; 178 u32 register_protocol_notify; 179 u32 locate_handle; 180 u32 locate_device_path; 181 u32 install_configuration_table; 182 u32 load_image; 183 u32 start_image; 184 u32 exit; 185 u32 unload_image; 186 u32 exit_boot_services; 187 u32 get_next_monotonic_count; 188 u32 stall; 189 u32 set_watchdog_timer; 190 u32 connect_controller; 191 u32 disconnect_controller; 192 u32 open_protocol; 193 u32 close_protocol; 194 u32 open_protocol_information; 195 u32 protocols_per_handle; 196 u32 locate_handle_buffer; 197 u32 locate_protocol; 198 u32 install_multiple_protocol_interfaces; 199 u32 uninstall_multiple_protocol_interfaces; 200 u32 calculate_crc32; 201 u32 copy_mem; 202 u32 set_mem; 203 u32 create_event_ex; 204 } __packed efi_boot_services_32_t; 205 206 typedef struct { 207 efi_table_hdr_t hdr; 208 u64 raise_tpl; 209 u64 restore_tpl; 210 u64 allocate_pages; 211 u64 free_pages; 212 u64 get_memory_map; 213 u64 allocate_pool; 214 u64 free_pool; 215 u64 create_event; 216 u64 set_timer; 217 u64 wait_for_event; 218 u64 signal_event; 219 u64 close_event; 220 u64 check_event; 221 u64 install_protocol_interface; 222 u64 reinstall_protocol_interface; 223 u64 uninstall_protocol_interface; 224 u64 handle_protocol; 225 u64 __reserved; 226 u64 register_protocol_notify; 227 u64 locate_handle; 228 u64 locate_device_path; 229 u64 install_configuration_table; 230 u64 load_image; 231 u64 start_image; 232 u64 exit; 233 u64 unload_image; 234 u64 exit_boot_services; 235 u64 get_next_monotonic_count; 236 u64 stall; 237 u64 set_watchdog_timer; 238 u64 connect_controller; 239 u64 disconnect_controller; 240 u64 open_protocol; 241 u64 close_protocol; 242 u64 open_protocol_information; 243 u64 protocols_per_handle; 244 u64 locate_handle_buffer; 245 u64 locate_protocol; 246 u64 install_multiple_protocol_interfaces; 247 u64 uninstall_multiple_protocol_interfaces; 248 u64 calculate_crc32; 249 u64 copy_mem; 250 u64 set_mem; 251 u64 create_event_ex; 252 } __packed efi_boot_services_64_t; 253 254 /* 255 * EFI Boot Services table 256 */ 257 typedef struct { 258 efi_table_hdr_t hdr; 259 void *raise_tpl; 260 void *restore_tpl; 261 efi_status_t (*allocate_pages)(int, int, unsigned long, 262 efi_physical_addr_t *); 263 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 264 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 265 unsigned long *, u32 *); 266 efi_status_t (*allocate_pool)(int, unsigned long, void **); 267 efi_status_t (*free_pool)(void *); 268 void *create_event; 269 void *set_timer; 270 void *wait_for_event; 271 void *signal_event; 272 void *close_event; 273 void *check_event; 274 void *install_protocol_interface; 275 void *reinstall_protocol_interface; 276 void *uninstall_protocol_interface; 277 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 278 void *__reserved; 279 void *register_protocol_notify; 280 void *locate_handle; 281 void *locate_device_path; 282 void *install_configuration_table; 283 void *load_image; 284 void *start_image; 285 void *exit; 286 void *unload_image; 287 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 288 void *get_next_monotonic_count; 289 void *stall; 290 void *set_watchdog_timer; 291 void *connect_controller; 292 void *disconnect_controller; 293 void *open_protocol; 294 void *close_protocol; 295 void *open_protocol_information; 296 void *protocols_per_handle; 297 void *locate_handle_buffer; 298 void *locate_protocol; 299 void *install_multiple_protocol_interfaces; 300 void *uninstall_multiple_protocol_interfaces; 301 void *calculate_crc32; 302 void *copy_mem; 303 void *set_mem; 304 void *create_event_ex; 305 } efi_boot_services_t; 306 307 typedef enum { 308 EfiPciIoWidthUint8, 309 EfiPciIoWidthUint16, 310 EfiPciIoWidthUint32, 311 EfiPciIoWidthUint64, 312 EfiPciIoWidthFifoUint8, 313 EfiPciIoWidthFifoUint16, 314 EfiPciIoWidthFifoUint32, 315 EfiPciIoWidthFifoUint64, 316 EfiPciIoWidthFillUint8, 317 EfiPciIoWidthFillUint16, 318 EfiPciIoWidthFillUint32, 319 EfiPciIoWidthFillUint64, 320 EfiPciIoWidthMaximum 321 } EFI_PCI_IO_PROTOCOL_WIDTH; 322 323 typedef enum { 324 EfiPciIoAttributeOperationGet, 325 EfiPciIoAttributeOperationSet, 326 EfiPciIoAttributeOperationEnable, 327 EfiPciIoAttributeOperationDisable, 328 EfiPciIoAttributeOperationSupported, 329 EfiPciIoAttributeOperationMaximum 330 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 331 332 typedef struct { 333 u32 read; 334 u32 write; 335 } efi_pci_io_protocol_access_32_t; 336 337 typedef struct { 338 u64 read; 339 u64 write; 340 } efi_pci_io_protocol_access_64_t; 341 342 typedef struct { 343 void *read; 344 void *write; 345 } efi_pci_io_protocol_access_t; 346 347 typedef struct { 348 u32 poll_mem; 349 u32 poll_io; 350 efi_pci_io_protocol_access_32_t mem; 351 efi_pci_io_protocol_access_32_t io; 352 efi_pci_io_protocol_access_32_t pci; 353 u32 copy_mem; 354 u32 map; 355 u32 unmap; 356 u32 allocate_buffer; 357 u32 free_buffer; 358 u32 flush; 359 u32 get_location; 360 u32 attributes; 361 u32 get_bar_attributes; 362 u32 set_bar_attributes; 363 uint64_t romsize; 364 void *romimage; 365 } efi_pci_io_protocol_32; 366 367 typedef struct { 368 u64 poll_mem; 369 u64 poll_io; 370 efi_pci_io_protocol_access_64_t mem; 371 efi_pci_io_protocol_access_64_t io; 372 efi_pci_io_protocol_access_64_t pci; 373 u64 copy_mem; 374 u64 map; 375 u64 unmap; 376 u64 allocate_buffer; 377 u64 free_buffer; 378 u64 flush; 379 u64 get_location; 380 u64 attributes; 381 u64 get_bar_attributes; 382 u64 set_bar_attributes; 383 uint64_t romsize; 384 void *romimage; 385 } efi_pci_io_protocol_64; 386 387 typedef struct { 388 void *poll_mem; 389 void *poll_io; 390 efi_pci_io_protocol_access_t mem; 391 efi_pci_io_protocol_access_t io; 392 efi_pci_io_protocol_access_t pci; 393 void *copy_mem; 394 void *map; 395 void *unmap; 396 void *allocate_buffer; 397 void *free_buffer; 398 void *flush; 399 void *get_location; 400 void *attributes; 401 void *get_bar_attributes; 402 void *set_bar_attributes; 403 uint64_t romsize; 404 void *romimage; 405 } efi_pci_io_protocol; 406 407 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 408 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 409 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 410 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 411 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 412 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 413 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 414 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 415 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 416 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 417 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 418 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 419 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 420 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 421 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 422 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 423 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 424 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 425 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 426 427 /* 428 * Types and defines for EFI ResetSystem 429 */ 430 #define EFI_RESET_COLD 0 431 #define EFI_RESET_WARM 1 432 #define EFI_RESET_SHUTDOWN 2 433 434 /* 435 * EFI Runtime Services table 436 */ 437 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 438 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 439 440 typedef struct { 441 efi_table_hdr_t hdr; 442 u32 get_time; 443 u32 set_time; 444 u32 get_wakeup_time; 445 u32 set_wakeup_time; 446 u32 set_virtual_address_map; 447 u32 convert_pointer; 448 u32 get_variable; 449 u32 get_next_variable; 450 u32 set_variable; 451 u32 get_next_high_mono_count; 452 u32 reset_system; 453 u32 update_capsule; 454 u32 query_capsule_caps; 455 u32 query_variable_info; 456 } efi_runtime_services_32_t; 457 458 typedef struct { 459 efi_table_hdr_t hdr; 460 u64 get_time; 461 u64 set_time; 462 u64 get_wakeup_time; 463 u64 set_wakeup_time; 464 u64 set_virtual_address_map; 465 u64 convert_pointer; 466 u64 get_variable; 467 u64 get_next_variable; 468 u64 set_variable; 469 u64 get_next_high_mono_count; 470 u64 reset_system; 471 u64 update_capsule; 472 u64 query_capsule_caps; 473 u64 query_variable_info; 474 } efi_runtime_services_64_t; 475 476 typedef struct { 477 efi_table_hdr_t hdr; 478 void *get_time; 479 void *set_time; 480 void *get_wakeup_time; 481 void *set_wakeup_time; 482 void *set_virtual_address_map; 483 void *convert_pointer; 484 void *get_variable; 485 void *get_next_variable; 486 void *set_variable; 487 void *get_next_high_mono_count; 488 void *reset_system; 489 void *update_capsule; 490 void *query_capsule_caps; 491 void *query_variable_info; 492 } efi_runtime_services_t; 493 494 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 495 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 496 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 497 efi_time_t *tm); 498 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 499 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 500 unsigned long *data_size, void *data); 501 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 502 efi_guid_t *vendor); 503 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 504 u32 attr, unsigned long data_size, 505 void *data); 506 typedef efi_status_t 507 efi_set_variable_nonblocking_t(efi_char16_t *name, efi_guid_t *vendor, 508 u32 attr, unsigned long data_size, void *data); 509 510 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 511 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 512 unsigned long data_size, efi_char16_t *data); 513 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 514 unsigned long descriptor_size, 515 u32 descriptor_version, 516 efi_memory_desc_t *virtual_map); 517 typedef efi_status_t efi_query_variable_info_t(u32 attr, 518 u64 *storage_space, 519 u64 *remaining_space, 520 u64 *max_variable_size); 521 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 522 unsigned long count, 523 unsigned long sg_list); 524 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 525 unsigned long count, 526 u64 *max_size, 527 int *reset_type); 528 typedef efi_status_t efi_query_variable_store_t(u32 attributes, unsigned long size); 529 530 void efi_native_runtime_setup(void); 531 532 /* 533 * EFI Configuration Table and GUID definitions 534 */ 535 #define NULL_GUID \ 536 EFI_GUID( 0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ) 537 538 #define MPS_TABLE_GUID \ 539 EFI_GUID( 0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 540 541 #define ACPI_TABLE_GUID \ 542 EFI_GUID( 0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 543 544 #define ACPI_20_TABLE_GUID \ 545 EFI_GUID( 0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 ) 546 547 #define SMBIOS_TABLE_GUID \ 548 EFI_GUID( 0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 549 550 #define SMBIOS3_TABLE_GUID \ 551 EFI_GUID( 0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94 ) 552 553 #define SAL_SYSTEM_TABLE_GUID \ 554 EFI_GUID( 0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x0, 0x90, 0x27, 0x3f, 0xc1, 0x4d ) 555 556 #define HCDP_TABLE_GUID \ 557 EFI_GUID( 0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98 ) 558 559 #define UGA_IO_PROTOCOL_GUID \ 560 EFI_GUID( 0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0xb, 0x7, 0xa2 ) 561 562 #define EFI_GLOBAL_VARIABLE_GUID \ 563 EFI_GUID( 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c ) 564 565 #define UV_SYSTEM_TABLE_GUID \ 566 EFI_GUID( 0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93 ) 567 568 #define LINUX_EFI_CRASH_GUID \ 569 EFI_GUID( 0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0 ) 570 571 #define LOADED_IMAGE_PROTOCOL_GUID \ 572 EFI_GUID( 0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 573 574 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID \ 575 EFI_GUID( 0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a ) 576 577 #define EFI_UGA_PROTOCOL_GUID \ 578 EFI_GUID( 0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39 ) 579 580 #define EFI_PCI_IO_PROTOCOL_GUID \ 581 EFI_GUID( 0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x2, 0x9a ) 582 583 #define EFI_FILE_INFO_ID \ 584 EFI_GUID( 0x9576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 585 586 #define EFI_SYSTEM_RESOURCE_TABLE_GUID \ 587 EFI_GUID( 0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80 ) 588 589 #define EFI_FILE_SYSTEM_GUID \ 590 EFI_GUID( 0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b ) 591 592 #define DEVICE_TREE_GUID \ 593 EFI_GUID( 0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0 ) 594 595 typedef struct { 596 efi_guid_t guid; 597 u64 table; 598 } efi_config_table_64_t; 599 600 typedef struct { 601 efi_guid_t guid; 602 u32 table; 603 } efi_config_table_32_t; 604 605 typedef struct { 606 efi_guid_t guid; 607 unsigned long table; 608 } efi_config_table_t; 609 610 typedef struct { 611 efi_guid_t guid; 612 const char *name; 613 unsigned long *ptr; 614 } efi_config_table_type_t; 615 616 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 617 618 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 619 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 620 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 621 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 622 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 623 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 624 625 typedef struct { 626 efi_table_hdr_t hdr; 627 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 628 u32 fw_revision; 629 u32 __pad1; 630 u64 con_in_handle; 631 u64 con_in; 632 u64 con_out_handle; 633 u64 con_out; 634 u64 stderr_handle; 635 u64 stderr; 636 u64 runtime; 637 u64 boottime; 638 u32 nr_tables; 639 u32 __pad2; 640 u64 tables; 641 } efi_system_table_64_t; 642 643 typedef struct { 644 efi_table_hdr_t hdr; 645 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 646 u32 fw_revision; 647 u32 con_in_handle; 648 u32 con_in; 649 u32 con_out_handle; 650 u32 con_out; 651 u32 stderr_handle; 652 u32 stderr; 653 u32 runtime; 654 u32 boottime; 655 u32 nr_tables; 656 u32 tables; 657 } efi_system_table_32_t; 658 659 typedef struct { 660 efi_table_hdr_t hdr; 661 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 662 u32 fw_revision; 663 unsigned long con_in_handle; 664 unsigned long con_in; 665 unsigned long con_out_handle; 666 unsigned long con_out; 667 unsigned long stderr_handle; 668 unsigned long stderr; 669 efi_runtime_services_t *runtime; 670 efi_boot_services_t *boottime; 671 unsigned long nr_tables; 672 unsigned long tables; 673 } efi_system_table_t; 674 675 struct efi_memory_map { 676 void *phys_map; 677 void *map; 678 void *map_end; 679 int nr_map; 680 unsigned long desc_version; 681 unsigned long desc_size; 682 }; 683 684 struct efi_fdt_params { 685 u64 system_table; 686 u64 mmap; 687 u32 mmap_size; 688 u32 desc_size; 689 u32 desc_ver; 690 }; 691 692 typedef struct { 693 u32 revision; 694 u32 parent_handle; 695 u32 system_table; 696 u32 device_handle; 697 u32 file_path; 698 u32 reserved; 699 u32 load_options_size; 700 u32 load_options; 701 u32 image_base; 702 __aligned_u64 image_size; 703 unsigned int image_code_type; 704 unsigned int image_data_type; 705 unsigned long unload; 706 } efi_loaded_image_32_t; 707 708 typedef struct { 709 u32 revision; 710 u64 parent_handle; 711 u64 system_table; 712 u64 device_handle; 713 u64 file_path; 714 u64 reserved; 715 u32 load_options_size; 716 u64 load_options; 717 u64 image_base; 718 __aligned_u64 image_size; 719 unsigned int image_code_type; 720 unsigned int image_data_type; 721 unsigned long unload; 722 } efi_loaded_image_64_t; 723 724 typedef struct { 725 u32 revision; 726 void *parent_handle; 727 efi_system_table_t *system_table; 728 void *device_handle; 729 void *file_path; 730 void *reserved; 731 u32 load_options_size; 732 void *load_options; 733 void *image_base; 734 __aligned_u64 image_size; 735 unsigned int image_code_type; 736 unsigned int image_data_type; 737 unsigned long unload; 738 } efi_loaded_image_t; 739 740 741 typedef struct { 742 u64 size; 743 u64 file_size; 744 u64 phys_size; 745 efi_time_t create_time; 746 efi_time_t last_access_time; 747 efi_time_t modification_time; 748 __aligned_u64 attribute; 749 efi_char16_t filename[1]; 750 } efi_file_info_t; 751 752 typedef struct { 753 u64 revision; 754 u32 open; 755 u32 close; 756 u32 delete; 757 u32 read; 758 u32 write; 759 u32 get_position; 760 u32 set_position; 761 u32 get_info; 762 u32 set_info; 763 u32 flush; 764 } efi_file_handle_32_t; 765 766 typedef struct { 767 u64 revision; 768 u64 open; 769 u64 close; 770 u64 delete; 771 u64 read; 772 u64 write; 773 u64 get_position; 774 u64 set_position; 775 u64 get_info; 776 u64 set_info; 777 u64 flush; 778 } efi_file_handle_64_t; 779 780 typedef struct _efi_file_handle { 781 u64 revision; 782 efi_status_t (*open)(struct _efi_file_handle *, 783 struct _efi_file_handle **, 784 efi_char16_t *, u64, u64); 785 efi_status_t (*close)(struct _efi_file_handle *); 786 void *delete; 787 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 788 void *); 789 void *write; 790 void *get_position; 791 void *set_position; 792 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 793 unsigned long *, void *); 794 void *set_info; 795 void *flush; 796 } efi_file_handle_t; 797 798 typedef struct _efi_file_io_interface { 799 u64 revision; 800 int (*open_volume)(struct _efi_file_io_interface *, 801 efi_file_handle_t **); 802 } efi_file_io_interface_t; 803 804 #define EFI_FILE_MODE_READ 0x0000000000000001 805 #define EFI_FILE_MODE_WRITE 0x0000000000000002 806 #define EFI_FILE_MODE_CREATE 0x8000000000000000 807 808 #define EFI_INVALID_TABLE_ADDR (~0UL) 809 810 /* 811 * All runtime access to EFI goes through this structure: 812 */ 813 extern struct efi { 814 efi_system_table_t *systab; /* EFI system table */ 815 unsigned int runtime_version; /* Runtime services version */ 816 unsigned long mps; /* MPS table */ 817 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 818 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 819 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 820 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 821 unsigned long sal_systab; /* SAL system table */ 822 unsigned long boot_info; /* boot info table */ 823 unsigned long hcdp; /* HCDP table */ 824 unsigned long uga; /* UGA table */ 825 unsigned long uv_systab; /* UV system table */ 826 unsigned long fw_vendor; /* fw_vendor */ 827 unsigned long runtime; /* runtime table */ 828 unsigned long config_table; /* config tables */ 829 unsigned long esrt; /* ESRT table */ 830 efi_get_time_t *get_time; 831 efi_set_time_t *set_time; 832 efi_get_wakeup_time_t *get_wakeup_time; 833 efi_set_wakeup_time_t *set_wakeup_time; 834 efi_get_variable_t *get_variable; 835 efi_get_next_variable_t *get_next_variable; 836 efi_set_variable_t *set_variable; 837 efi_set_variable_nonblocking_t *set_variable_nonblocking; 838 efi_query_variable_info_t *query_variable_info; 839 efi_update_capsule_t *update_capsule; 840 efi_query_capsule_caps_t *query_capsule_caps; 841 efi_get_next_high_mono_count_t *get_next_high_mono_count; 842 efi_reset_system_t *reset_system; 843 efi_set_virtual_address_map_t *set_virtual_address_map; 844 struct efi_memory_map *memmap; 845 unsigned long flags; 846 } efi; 847 848 static inline int 849 efi_guidcmp (efi_guid_t left, efi_guid_t right) 850 { 851 return memcmp(&left, &right, sizeof (efi_guid_t)); 852 } 853 854 static inline char * 855 efi_guid_to_str(efi_guid_t *guid, char *out) 856 { 857 sprintf(out, "%pUl", guid->b); 858 return out; 859 } 860 861 extern void efi_init (void); 862 extern void *efi_get_pal_addr (void); 863 extern void efi_map_pal_code (void); 864 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 865 extern void efi_gettimeofday (struct timespec *ts); 866 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 867 #ifdef CONFIG_X86 868 extern void efi_late_init(void); 869 extern void efi_free_boot_services(void); 870 extern efi_status_t efi_query_variable_store(u32 attributes, unsigned long size); 871 #else 872 static inline void efi_late_init(void) {} 873 static inline void efi_free_boot_services(void) {} 874 875 static inline efi_status_t efi_query_variable_store(u32 attributes, unsigned long size) 876 { 877 return EFI_SUCCESS; 878 } 879 #endif 880 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 881 extern int efi_config_init(efi_config_table_type_t *arch_tables); 882 #ifdef CONFIG_EFI_ESRT 883 extern void __init efi_esrt_init(void); 884 #else 885 static inline void efi_esrt_init(void) { } 886 #endif 887 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 888 efi_config_table_type_t *arch_tables); 889 extern u64 efi_get_iobase (void); 890 extern u32 efi_mem_type (unsigned long phys_addr); 891 extern u64 efi_mem_attributes (unsigned long phys_addr); 892 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 893 extern int __init efi_uart_console_only (void); 894 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 895 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 896 extern void efi_initialize_iomem_resources(struct resource *code_resource, 897 struct resource *data_resource, struct resource *bss_resource); 898 extern void efi_get_time(struct timespec *now); 899 extern void efi_reserve_boot_services(void); 900 extern int efi_get_fdt_params(struct efi_fdt_params *params, int verbose); 901 extern struct efi_memory_map memmap; 902 extern struct kobject *efi_kobj; 903 904 extern int efi_reboot_quirk_mode; 905 extern bool efi_poweroff_required(void); 906 907 /* Iterate through an efi_memory_map */ 908 #define for_each_efi_memory_desc(m, md) \ 909 for ((md) = (m)->map; \ 910 (md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \ 911 (md) = (void *)(md) + (m)->desc_size) 912 913 /* 914 * Format an EFI memory descriptor's type and attributes to a user-provided 915 * character buffer, as per snprintf(), and return the buffer. 916 */ 917 char * __init efi_md_typeattr_format(char *buf, size_t size, 918 const efi_memory_desc_t *md); 919 920 /** 921 * efi_range_is_wc - check the WC bit on an address range 922 * @start: starting kvirt address 923 * @len: length of range 924 * 925 * Consult the EFI memory map and make sure it's ok to set this range WC. 926 * Returns true or false. 927 */ 928 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 929 { 930 unsigned long i; 931 932 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 933 unsigned long paddr = __pa(start + i); 934 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 935 return 0; 936 } 937 /* The range checked out */ 938 return 1; 939 } 940 941 #ifdef CONFIG_EFI_PCDP 942 extern int __init efi_setup_pcdp_console(char *); 943 #endif 944 945 /* 946 * We play games with efi_enabled so that the compiler will, if 947 * possible, remove EFI-related code altogether. 948 */ 949 #define EFI_BOOT 0 /* Were we booted from EFI? */ 950 #define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */ 951 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 952 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 953 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 954 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 955 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 956 #define EFI_ARCH_1 7 /* First arch-specific bit */ 957 #define EFI_DBG 8 /* Print additional debug info at runtime */ 958 959 #ifdef CONFIG_EFI 960 /* 961 * Test whether the above EFI_* bits are enabled. 962 */ 963 static inline bool efi_enabled(int feature) 964 { 965 return test_bit(feature, &efi.flags) != 0; 966 } 967 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 968 #else 969 static inline bool efi_enabled(int feature) 970 { 971 return false; 972 } 973 static inline void 974 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 975 #endif 976 977 /* 978 * Variable Attributes 979 */ 980 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 981 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 982 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 983 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 984 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 985 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 986 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 987 988 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 989 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 990 EFI_VARIABLE_RUNTIME_ACCESS | \ 991 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 992 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 993 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 994 EFI_VARIABLE_APPEND_WRITE) 995 /* 996 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 997 * not including trailing NUL 998 */ 999 #define EFI_VARIABLE_GUID_LEN 36 1000 1001 /* 1002 * The type of search to perform when calling boottime->locate_handle 1003 */ 1004 #define EFI_LOCATE_ALL_HANDLES 0 1005 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1006 #define EFI_LOCATE_BY_PROTOCOL 2 1007 1008 /* 1009 * EFI Device Path information 1010 */ 1011 #define EFI_DEV_HW 0x01 1012 #define EFI_DEV_PCI 1 1013 #define EFI_DEV_PCCARD 2 1014 #define EFI_DEV_MEM_MAPPED 3 1015 #define EFI_DEV_VENDOR 4 1016 #define EFI_DEV_CONTROLLER 5 1017 #define EFI_DEV_ACPI 0x02 1018 #define EFI_DEV_BASIC_ACPI 1 1019 #define EFI_DEV_EXPANDED_ACPI 2 1020 #define EFI_DEV_MSG 0x03 1021 #define EFI_DEV_MSG_ATAPI 1 1022 #define EFI_DEV_MSG_SCSI 2 1023 #define EFI_DEV_MSG_FC 3 1024 #define EFI_DEV_MSG_1394 4 1025 #define EFI_DEV_MSG_USB 5 1026 #define EFI_DEV_MSG_USB_CLASS 15 1027 #define EFI_DEV_MSG_I20 6 1028 #define EFI_DEV_MSG_MAC 11 1029 #define EFI_DEV_MSG_IPV4 12 1030 #define EFI_DEV_MSG_IPV6 13 1031 #define EFI_DEV_MSG_INFINIBAND 9 1032 #define EFI_DEV_MSG_UART 14 1033 #define EFI_DEV_MSG_VENDOR 10 1034 #define EFI_DEV_MEDIA 0x04 1035 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1036 #define EFI_DEV_MEDIA_CDROM 2 1037 #define EFI_DEV_MEDIA_VENDOR 3 1038 #define EFI_DEV_MEDIA_FILE 4 1039 #define EFI_DEV_MEDIA_PROTOCOL 5 1040 #define EFI_DEV_BIOS_BOOT 0x05 1041 #define EFI_DEV_END_PATH 0x7F 1042 #define EFI_DEV_END_PATH2 0xFF 1043 #define EFI_DEV_END_INSTANCE 0x01 1044 #define EFI_DEV_END_ENTIRE 0xFF 1045 1046 struct efi_generic_dev_path { 1047 u8 type; 1048 u8 sub_type; 1049 u16 length; 1050 } __attribute ((packed)); 1051 1052 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1053 { 1054 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1055 *addr &= PAGE_MASK; 1056 } 1057 1058 /* 1059 * EFI Variable support. 1060 * 1061 * Different firmware drivers can expose their EFI-like variables using 1062 * the following. 1063 */ 1064 1065 struct efivar_operations { 1066 efi_get_variable_t *get_variable; 1067 efi_get_next_variable_t *get_next_variable; 1068 efi_set_variable_t *set_variable; 1069 efi_set_variable_nonblocking_t *set_variable_nonblocking; 1070 efi_query_variable_store_t *query_variable_store; 1071 }; 1072 1073 struct efivars { 1074 /* 1075 * ->lock protects two things: 1076 * 1) efivarfs_list and efivars_sysfs_list 1077 * 2) ->ops calls 1078 */ 1079 spinlock_t lock; 1080 struct kset *kset; 1081 struct kobject *kobject; 1082 const struct efivar_operations *ops; 1083 }; 1084 1085 /* 1086 * The maximum size of VariableName + Data = 1024 1087 * Therefore, it's reasonable to save that much 1088 * space in each part of the structure, 1089 * and we use a page for reading/writing. 1090 */ 1091 1092 #define EFI_VAR_NAME_LEN 1024 1093 1094 struct efi_variable { 1095 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1096 efi_guid_t VendorGuid; 1097 unsigned long DataSize; 1098 __u8 Data[1024]; 1099 efi_status_t Status; 1100 __u32 Attributes; 1101 } __attribute__((packed)); 1102 1103 struct efivar_entry { 1104 struct efi_variable var; 1105 struct list_head list; 1106 struct kobject kobj; 1107 bool scanning; 1108 bool deleting; 1109 }; 1110 1111 struct efi_simple_text_output_protocol_32 { 1112 u32 reset; 1113 u32 output_string; 1114 u32 test_string; 1115 }; 1116 1117 struct efi_simple_text_output_protocol_64 { 1118 u64 reset; 1119 u64 output_string; 1120 u64 test_string; 1121 }; 1122 1123 struct efi_simple_text_output_protocol { 1124 void *reset; 1125 efi_status_t (*output_string)(void *, void *); 1126 void *test_string; 1127 }; 1128 1129 extern struct list_head efivar_sysfs_list; 1130 1131 static inline void 1132 efivar_unregister(struct efivar_entry *var) 1133 { 1134 kobject_put(&var->kobj); 1135 } 1136 1137 int efivars_register(struct efivars *efivars, 1138 const struct efivar_operations *ops, 1139 struct kobject *kobject); 1140 int efivars_unregister(struct efivars *efivars); 1141 struct kobject *efivars_kobject(void); 1142 1143 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1144 void *data, bool atomic, bool duplicates, 1145 struct list_head *head); 1146 1147 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1148 void efivar_entry_remove(struct efivar_entry *entry); 1149 1150 int __efivar_entry_delete(struct efivar_entry *entry); 1151 int efivar_entry_delete(struct efivar_entry *entry); 1152 1153 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1154 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1155 unsigned long *size, void *data); 1156 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1157 unsigned long *size, void *data); 1158 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1159 unsigned long size, void *data, struct list_head *head); 1160 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1161 unsigned long *size, void *data, bool *set); 1162 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1163 bool block, unsigned long size, void *data); 1164 1165 void efivar_entry_iter_begin(void); 1166 void efivar_entry_iter_end(void); 1167 1168 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1169 struct list_head *head, void *data, 1170 struct efivar_entry **prev); 1171 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1172 struct list_head *head, void *data); 1173 1174 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1175 struct list_head *head, bool remove); 1176 1177 bool efivar_validate(efi_char16_t *var_name, u8 *data, unsigned long len); 1178 1179 extern struct work_struct efivar_work; 1180 void efivar_run_worker(void); 1181 1182 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1183 int efivars_sysfs_init(void); 1184 1185 #define EFIVARS_DATA_SIZE_MAX 1024 1186 1187 #endif /* CONFIG_EFI_VARS */ 1188 1189 #ifdef CONFIG_EFI_RUNTIME_MAP 1190 int efi_runtime_map_init(struct kobject *); 1191 void efi_runtime_map_setup(void *, int, u32); 1192 int efi_get_runtime_map_size(void); 1193 int efi_get_runtime_map_desc_size(void); 1194 int efi_runtime_map_copy(void *buf, size_t bufsz); 1195 #else 1196 static inline int efi_runtime_map_init(struct kobject *kobj) 1197 { 1198 return 0; 1199 } 1200 1201 static inline void 1202 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1203 1204 static inline int efi_get_runtime_map_size(void) 1205 { 1206 return 0; 1207 } 1208 1209 static inline int efi_get_runtime_map_desc_size(void) 1210 { 1211 return 0; 1212 } 1213 1214 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1215 { 1216 return 0; 1217 } 1218 1219 #endif 1220 1221 /* prototypes shared between arch specific and generic stub code */ 1222 1223 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1224 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1225 1226 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1227 1228 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1229 unsigned long addr); 1230 1231 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1232 efi_loaded_image_t *image, int *cmd_line_len); 1233 1234 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1235 efi_memory_desc_t **map, 1236 unsigned long *map_size, 1237 unsigned long *desc_size, 1238 u32 *desc_ver, 1239 unsigned long *key_ptr); 1240 1241 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1242 unsigned long size, unsigned long align, 1243 unsigned long *addr); 1244 1245 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1246 unsigned long size, unsigned long align, 1247 unsigned long *addr, unsigned long max); 1248 1249 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1250 unsigned long *image_addr, 1251 unsigned long image_size, 1252 unsigned long alloc_size, 1253 unsigned long preferred_addr, 1254 unsigned long alignment); 1255 1256 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1257 efi_loaded_image_t *image, 1258 char *cmd_line, char *option_string, 1259 unsigned long max_addr, 1260 unsigned long *load_addr, 1261 unsigned long *load_size); 1262 1263 efi_status_t efi_parse_options(char *cmdline); 1264 1265 bool efi_runtime_disabled(void); 1266 #endif /* _LINUX_EFI_H */ 1267