1 #ifndef _LINUX_EFI_H 2 #define _LINUX_EFI_H 3 4 /* 5 * Extensible Firmware Interface 6 * Based on 'Extensible Firmware Interface Specification' version 0.9, April 30, 1999 7 * 8 * Copyright (C) 1999 VA Linux Systems 9 * Copyright (C) 1999 Walt Drummond <[email protected]> 10 * Copyright (C) 1999, 2002-2003 Hewlett-Packard Co. 11 * David Mosberger-Tang <[email protected]> 12 * Stephane Eranian <[email protected]> 13 */ 14 #include <linux/init.h> 15 #include <linux/string.h> 16 #include <linux/time.h> 17 #include <linux/types.h> 18 #include <linux/proc_fs.h> 19 #include <linux/rtc.h> 20 #include <linux/ioport.h> 21 #include <linux/pfn.h> 22 #include <linux/pstore.h> 23 #include <linux/reboot.h> 24 #include <linux/uuid.h> 25 #include <linux/screen_info.h> 26 27 #include <asm/page.h> 28 29 #define EFI_SUCCESS 0 30 #define EFI_LOAD_ERROR ( 1 | (1UL << (BITS_PER_LONG-1))) 31 #define EFI_INVALID_PARAMETER ( 2 | (1UL << (BITS_PER_LONG-1))) 32 #define EFI_UNSUPPORTED ( 3 | (1UL << (BITS_PER_LONG-1))) 33 #define EFI_BAD_BUFFER_SIZE ( 4 | (1UL << (BITS_PER_LONG-1))) 34 #define EFI_BUFFER_TOO_SMALL ( 5 | (1UL << (BITS_PER_LONG-1))) 35 #define EFI_NOT_READY ( 6 | (1UL << (BITS_PER_LONG-1))) 36 #define EFI_DEVICE_ERROR ( 7 | (1UL << (BITS_PER_LONG-1))) 37 #define EFI_WRITE_PROTECTED ( 8 | (1UL << (BITS_PER_LONG-1))) 38 #define EFI_OUT_OF_RESOURCES ( 9 | (1UL << (BITS_PER_LONG-1))) 39 #define EFI_NOT_FOUND (14 | (1UL << (BITS_PER_LONG-1))) 40 #define EFI_SECURITY_VIOLATION (26 | (1UL << (BITS_PER_LONG-1))) 41 42 typedef unsigned long efi_status_t; 43 typedef u8 efi_bool_t; 44 typedef u16 efi_char16_t; /* UNICODE character */ 45 typedef u64 efi_physical_addr_t; 46 typedef void *efi_handle_t; 47 48 typedef uuid_le efi_guid_t; 49 50 #define EFI_GUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \ 51 UUID_LE(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) 52 53 /* 54 * Generic EFI table header 55 */ 56 typedef struct { 57 u64 signature; 58 u32 revision; 59 u32 headersize; 60 u32 crc32; 61 u32 reserved; 62 } efi_table_hdr_t; 63 64 /* 65 * Memory map descriptor: 66 */ 67 68 /* Memory types: */ 69 #define EFI_RESERVED_TYPE 0 70 #define EFI_LOADER_CODE 1 71 #define EFI_LOADER_DATA 2 72 #define EFI_BOOT_SERVICES_CODE 3 73 #define EFI_BOOT_SERVICES_DATA 4 74 #define EFI_RUNTIME_SERVICES_CODE 5 75 #define EFI_RUNTIME_SERVICES_DATA 6 76 #define EFI_CONVENTIONAL_MEMORY 7 77 #define EFI_UNUSABLE_MEMORY 8 78 #define EFI_ACPI_RECLAIM_MEMORY 9 79 #define EFI_ACPI_MEMORY_NVS 10 80 #define EFI_MEMORY_MAPPED_IO 11 81 #define EFI_MEMORY_MAPPED_IO_PORT_SPACE 12 82 #define EFI_PAL_CODE 13 83 #define EFI_PERSISTENT_MEMORY 14 84 #define EFI_MAX_MEMORY_TYPE 15 85 86 /* Attribute values: */ 87 #define EFI_MEMORY_UC ((u64)0x0000000000000001ULL) /* uncached */ 88 #define EFI_MEMORY_WC ((u64)0x0000000000000002ULL) /* write-coalescing */ 89 #define EFI_MEMORY_WT ((u64)0x0000000000000004ULL) /* write-through */ 90 #define EFI_MEMORY_WB ((u64)0x0000000000000008ULL) /* write-back */ 91 #define EFI_MEMORY_UCE ((u64)0x0000000000000010ULL) /* uncached, exported */ 92 #define EFI_MEMORY_WP ((u64)0x0000000000001000ULL) /* write-protect */ 93 #define EFI_MEMORY_RP ((u64)0x0000000000002000ULL) /* read-protect */ 94 #define EFI_MEMORY_XP ((u64)0x0000000000004000ULL) /* execute-protect */ 95 #define EFI_MEMORY_NV ((u64)0x0000000000008000ULL) /* non-volatile */ 96 #define EFI_MEMORY_MORE_RELIABLE \ 97 ((u64)0x0000000000010000ULL) /* higher reliability */ 98 #define EFI_MEMORY_RO ((u64)0x0000000000020000ULL) /* read-only */ 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 struct efi_boot_memmap { 122 efi_memory_desc_t **map; 123 unsigned long *map_size; 124 unsigned long *desc_size; 125 u32 *desc_ver; 126 unsigned long *key_ptr; 127 unsigned long *buff_size; 128 }; 129 130 /* 131 * EFI capsule flags 132 */ 133 #define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000 134 #define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000 135 #define EFI_CAPSULE_INITIATE_RESET 0x00040000 136 137 /* 138 * Allocation types for calls to boottime->allocate_pages. 139 */ 140 #define EFI_ALLOCATE_ANY_PAGES 0 141 #define EFI_ALLOCATE_MAX_ADDRESS 1 142 #define EFI_ALLOCATE_ADDRESS 2 143 #define EFI_MAX_ALLOCATE_TYPE 3 144 145 typedef int (*efi_freemem_callback_t) (u64 start, u64 end, void *arg); 146 147 /* 148 * Types and defines for Time Services 149 */ 150 #define EFI_TIME_ADJUST_DAYLIGHT 0x1 151 #define EFI_TIME_IN_DAYLIGHT 0x2 152 #define EFI_UNSPECIFIED_TIMEZONE 0x07ff 153 154 typedef struct { 155 u16 year; 156 u8 month; 157 u8 day; 158 u8 hour; 159 u8 minute; 160 u8 second; 161 u8 pad1; 162 u32 nanosecond; 163 s16 timezone; 164 u8 daylight; 165 u8 pad2; 166 } efi_time_t; 167 168 typedef struct { 169 u32 resolution; 170 u32 accuracy; 171 u8 sets_to_zero; 172 } efi_time_cap_t; 173 174 typedef struct { 175 efi_table_hdr_t hdr; 176 u32 raise_tpl; 177 u32 restore_tpl; 178 u32 allocate_pages; 179 u32 free_pages; 180 u32 get_memory_map; 181 u32 allocate_pool; 182 u32 free_pool; 183 u32 create_event; 184 u32 set_timer; 185 u32 wait_for_event; 186 u32 signal_event; 187 u32 close_event; 188 u32 check_event; 189 u32 install_protocol_interface; 190 u32 reinstall_protocol_interface; 191 u32 uninstall_protocol_interface; 192 u32 handle_protocol; 193 u32 __reserved; 194 u32 register_protocol_notify; 195 u32 locate_handle; 196 u32 locate_device_path; 197 u32 install_configuration_table; 198 u32 load_image; 199 u32 start_image; 200 u32 exit; 201 u32 unload_image; 202 u32 exit_boot_services; 203 u32 get_next_monotonic_count; 204 u32 stall; 205 u32 set_watchdog_timer; 206 u32 connect_controller; 207 u32 disconnect_controller; 208 u32 open_protocol; 209 u32 close_protocol; 210 u32 open_protocol_information; 211 u32 protocols_per_handle; 212 u32 locate_handle_buffer; 213 u32 locate_protocol; 214 u32 install_multiple_protocol_interfaces; 215 u32 uninstall_multiple_protocol_interfaces; 216 u32 calculate_crc32; 217 u32 copy_mem; 218 u32 set_mem; 219 u32 create_event_ex; 220 } __packed efi_boot_services_32_t; 221 222 typedef struct { 223 efi_table_hdr_t hdr; 224 u64 raise_tpl; 225 u64 restore_tpl; 226 u64 allocate_pages; 227 u64 free_pages; 228 u64 get_memory_map; 229 u64 allocate_pool; 230 u64 free_pool; 231 u64 create_event; 232 u64 set_timer; 233 u64 wait_for_event; 234 u64 signal_event; 235 u64 close_event; 236 u64 check_event; 237 u64 install_protocol_interface; 238 u64 reinstall_protocol_interface; 239 u64 uninstall_protocol_interface; 240 u64 handle_protocol; 241 u64 __reserved; 242 u64 register_protocol_notify; 243 u64 locate_handle; 244 u64 locate_device_path; 245 u64 install_configuration_table; 246 u64 load_image; 247 u64 start_image; 248 u64 exit; 249 u64 unload_image; 250 u64 exit_boot_services; 251 u64 get_next_monotonic_count; 252 u64 stall; 253 u64 set_watchdog_timer; 254 u64 connect_controller; 255 u64 disconnect_controller; 256 u64 open_protocol; 257 u64 close_protocol; 258 u64 open_protocol_information; 259 u64 protocols_per_handle; 260 u64 locate_handle_buffer; 261 u64 locate_protocol; 262 u64 install_multiple_protocol_interfaces; 263 u64 uninstall_multiple_protocol_interfaces; 264 u64 calculate_crc32; 265 u64 copy_mem; 266 u64 set_mem; 267 u64 create_event_ex; 268 } __packed efi_boot_services_64_t; 269 270 /* 271 * EFI Boot Services table 272 */ 273 typedef struct { 274 efi_table_hdr_t hdr; 275 void *raise_tpl; 276 void *restore_tpl; 277 efi_status_t (*allocate_pages)(int, int, unsigned long, 278 efi_physical_addr_t *); 279 efi_status_t (*free_pages)(efi_physical_addr_t, unsigned long); 280 efi_status_t (*get_memory_map)(unsigned long *, void *, unsigned long *, 281 unsigned long *, u32 *); 282 efi_status_t (*allocate_pool)(int, unsigned long, void **); 283 efi_status_t (*free_pool)(void *); 284 void *create_event; 285 void *set_timer; 286 void *wait_for_event; 287 void *signal_event; 288 void *close_event; 289 void *check_event; 290 void *install_protocol_interface; 291 void *reinstall_protocol_interface; 292 void *uninstall_protocol_interface; 293 efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **); 294 void *__reserved; 295 void *register_protocol_notify; 296 efi_status_t (*locate_handle)(int, efi_guid_t *, void *, 297 unsigned long *, efi_handle_t *); 298 void *locate_device_path; 299 efi_status_t (*install_configuration_table)(efi_guid_t *, void *); 300 void *load_image; 301 void *start_image; 302 void *exit; 303 void *unload_image; 304 efi_status_t (*exit_boot_services)(efi_handle_t, unsigned long); 305 void *get_next_monotonic_count; 306 void *stall; 307 void *set_watchdog_timer; 308 void *connect_controller; 309 void *disconnect_controller; 310 void *open_protocol; 311 void *close_protocol; 312 void *open_protocol_information; 313 void *protocols_per_handle; 314 void *locate_handle_buffer; 315 efi_status_t (*locate_protocol)(efi_guid_t *, void *, void **); 316 void *install_multiple_protocol_interfaces; 317 void *uninstall_multiple_protocol_interfaces; 318 void *calculate_crc32; 319 void *copy_mem; 320 void *set_mem; 321 void *create_event_ex; 322 } efi_boot_services_t; 323 324 typedef enum { 325 EfiPciIoWidthUint8, 326 EfiPciIoWidthUint16, 327 EfiPciIoWidthUint32, 328 EfiPciIoWidthUint64, 329 EfiPciIoWidthFifoUint8, 330 EfiPciIoWidthFifoUint16, 331 EfiPciIoWidthFifoUint32, 332 EfiPciIoWidthFifoUint64, 333 EfiPciIoWidthFillUint8, 334 EfiPciIoWidthFillUint16, 335 EfiPciIoWidthFillUint32, 336 EfiPciIoWidthFillUint64, 337 EfiPciIoWidthMaximum 338 } EFI_PCI_IO_PROTOCOL_WIDTH; 339 340 typedef enum { 341 EfiPciIoAttributeOperationGet, 342 EfiPciIoAttributeOperationSet, 343 EfiPciIoAttributeOperationEnable, 344 EfiPciIoAttributeOperationDisable, 345 EfiPciIoAttributeOperationSupported, 346 EfiPciIoAttributeOperationMaximum 347 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 348 349 typedef struct { 350 u32 read; 351 u32 write; 352 } efi_pci_io_protocol_access_32_t; 353 354 typedef struct { 355 u64 read; 356 u64 write; 357 } efi_pci_io_protocol_access_64_t; 358 359 typedef struct { 360 void *read; 361 void *write; 362 } efi_pci_io_protocol_access_t; 363 364 typedef struct { 365 u32 poll_mem; 366 u32 poll_io; 367 efi_pci_io_protocol_access_32_t mem; 368 efi_pci_io_protocol_access_32_t io; 369 efi_pci_io_protocol_access_32_t pci; 370 u32 copy_mem; 371 u32 map; 372 u32 unmap; 373 u32 allocate_buffer; 374 u32 free_buffer; 375 u32 flush; 376 u32 get_location; 377 u32 attributes; 378 u32 get_bar_attributes; 379 u32 set_bar_attributes; 380 uint64_t romsize; 381 void *romimage; 382 } efi_pci_io_protocol_32; 383 384 typedef struct { 385 u64 poll_mem; 386 u64 poll_io; 387 efi_pci_io_protocol_access_64_t mem; 388 efi_pci_io_protocol_access_64_t io; 389 efi_pci_io_protocol_access_64_t pci; 390 u64 copy_mem; 391 u64 map; 392 u64 unmap; 393 u64 allocate_buffer; 394 u64 free_buffer; 395 u64 flush; 396 u64 get_location; 397 u64 attributes; 398 u64 get_bar_attributes; 399 u64 set_bar_attributes; 400 uint64_t romsize; 401 void *romimage; 402 } efi_pci_io_protocol_64; 403 404 typedef struct { 405 void *poll_mem; 406 void *poll_io; 407 efi_pci_io_protocol_access_t mem; 408 efi_pci_io_protocol_access_t io; 409 efi_pci_io_protocol_access_t pci; 410 void *copy_mem; 411 void *map; 412 void *unmap; 413 void *allocate_buffer; 414 void *free_buffer; 415 void *flush; 416 void *get_location; 417 void *attributes; 418 void *get_bar_attributes; 419 void *set_bar_attributes; 420 uint64_t romsize; 421 void *romimage; 422 } efi_pci_io_protocol; 423 424 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 425 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 426 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 427 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 428 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 429 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 430 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 431 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 432 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 433 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 434 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 435 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 436 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 437 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 438 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 439 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 440 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 441 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 442 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 443 444 /* 445 * Types and defines for EFI ResetSystem 446 */ 447 #define EFI_RESET_COLD 0 448 #define EFI_RESET_WARM 1 449 #define EFI_RESET_SHUTDOWN 2 450 451 /* 452 * EFI Runtime Services table 453 */ 454 #define EFI_RUNTIME_SERVICES_SIGNATURE ((u64)0x5652453544e5552ULL) 455 #define EFI_RUNTIME_SERVICES_REVISION 0x00010000 456 457 typedef struct { 458 efi_table_hdr_t hdr; 459 u32 get_time; 460 u32 set_time; 461 u32 get_wakeup_time; 462 u32 set_wakeup_time; 463 u32 set_virtual_address_map; 464 u32 convert_pointer; 465 u32 get_variable; 466 u32 get_next_variable; 467 u32 set_variable; 468 u32 get_next_high_mono_count; 469 u32 reset_system; 470 u32 update_capsule; 471 u32 query_capsule_caps; 472 u32 query_variable_info; 473 } efi_runtime_services_32_t; 474 475 typedef struct { 476 efi_table_hdr_t hdr; 477 u64 get_time; 478 u64 set_time; 479 u64 get_wakeup_time; 480 u64 set_wakeup_time; 481 u64 set_virtual_address_map; 482 u64 convert_pointer; 483 u64 get_variable; 484 u64 get_next_variable; 485 u64 set_variable; 486 u64 get_next_high_mono_count; 487 u64 reset_system; 488 u64 update_capsule; 489 u64 query_capsule_caps; 490 u64 query_variable_info; 491 } efi_runtime_services_64_t; 492 493 typedef struct { 494 efi_table_hdr_t hdr; 495 void *get_time; 496 void *set_time; 497 void *get_wakeup_time; 498 void *set_wakeup_time; 499 void *set_virtual_address_map; 500 void *convert_pointer; 501 void *get_variable; 502 void *get_next_variable; 503 void *set_variable; 504 void *get_next_high_mono_count; 505 void *reset_system; 506 void *update_capsule; 507 void *query_capsule_caps; 508 void *query_variable_info; 509 } efi_runtime_services_t; 510 511 typedef efi_status_t efi_get_time_t (efi_time_t *tm, efi_time_cap_t *tc); 512 typedef efi_status_t efi_set_time_t (efi_time_t *tm); 513 typedef efi_status_t efi_get_wakeup_time_t (efi_bool_t *enabled, efi_bool_t *pending, 514 efi_time_t *tm); 515 typedef efi_status_t efi_set_wakeup_time_t (efi_bool_t enabled, efi_time_t *tm); 516 typedef efi_status_t efi_get_variable_t (efi_char16_t *name, efi_guid_t *vendor, u32 *attr, 517 unsigned long *data_size, void *data); 518 typedef efi_status_t efi_get_next_variable_t (unsigned long *name_size, efi_char16_t *name, 519 efi_guid_t *vendor); 520 typedef efi_status_t efi_set_variable_t (efi_char16_t *name, efi_guid_t *vendor, 521 u32 attr, unsigned long data_size, 522 void *data); 523 typedef efi_status_t efi_get_next_high_mono_count_t (u32 *count); 524 typedef void efi_reset_system_t (int reset_type, efi_status_t status, 525 unsigned long data_size, efi_char16_t *data); 526 typedef efi_status_t efi_set_virtual_address_map_t (unsigned long memory_map_size, 527 unsigned long descriptor_size, 528 u32 descriptor_version, 529 efi_memory_desc_t *virtual_map); 530 typedef efi_status_t efi_query_variable_info_t(u32 attr, 531 u64 *storage_space, 532 u64 *remaining_space, 533 u64 *max_variable_size); 534 typedef efi_status_t efi_update_capsule_t(efi_capsule_header_t **capsules, 535 unsigned long count, 536 unsigned long sg_list); 537 typedef efi_status_t efi_query_capsule_caps_t(efi_capsule_header_t **capsules, 538 unsigned long count, 539 u64 *max_size, 540 int *reset_type); 541 typedef efi_status_t efi_query_variable_store_t(u32 attributes, 542 unsigned long size, 543 bool nonblocking); 544 545 void efi_native_runtime_setup(void); 546 547 /* 548 * EFI Configuration Table and GUID definitions 549 * 550 * These are all defined in a single line to make them easier to 551 * grep for and to see them at a glance - while still having a 552 * similar structure to the definitions in the spec. 553 * 554 * Here's how they are structured: 555 * 556 * GUID: 12345678-1234-1234-1234-123456789012 557 * Spec: 558 * #define EFI_SOME_PROTOCOL_GUID \ 559 * {0x12345678,0x1234,0x1234,\ 560 * {0x12,0x34,0x12,0x34,0x56,0x78,0x90,0x12}} 561 * Here: 562 * #define SOME_PROTOCOL_GUID EFI_GUID(0x12345678, 0x1234, 0x1234, 0x12, 0x34, 0x12, 0x34, 0x56, 0x78, 0x90, 0x12) 563 * ^ tabs ^extra space 564 * 565 * Note that the 'extra space' separates the values at the same place 566 * where the UEFI SPEC breaks the line. 567 */ 568 #define NULL_GUID EFI_GUID(0x00000000, 0x0000, 0x0000, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00) 569 #define MPS_TABLE_GUID EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 570 #define ACPI_TABLE_GUID EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 571 #define ACPI_20_TABLE_GUID EFI_GUID(0x8868e871, 0xe4f1, 0x11d3, 0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81) 572 #define SMBIOS_TABLE_GUID EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 573 #define SMBIOS3_TABLE_GUID EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c, 0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94) 574 #define SAL_SYSTEM_TABLE_GUID EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3, 0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 575 #define HCDP_TABLE_GUID EFI_GUID(0xf951938d, 0x620b, 0x42ef, 0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98) 576 #define UGA_IO_PROTOCOL_GUID EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b, 0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2) 577 #define EFI_GLOBAL_VARIABLE_GUID EFI_GUID(0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c) 578 #define UV_SYSTEM_TABLE_GUID EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd, 0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93) 579 #define LINUX_EFI_CRASH_GUID EFI_GUID(0xcfc8fc79, 0xbe2e, 0x4ddc, 0x97, 0xf0, 0x9f, 0x98, 0xbf, 0xe2, 0x98, 0xa0) 580 #define LOADED_IMAGE_PROTOCOL_GUID EFI_GUID(0x5b1b31a1, 0x9562, 0x11d2, 0x8e, 0x3f, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 581 #define EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID EFI_GUID(0x9042a9de, 0x23dc, 0x4a38, 0x96, 0xfb, 0x7a, 0xde, 0xd0, 0x80, 0x51, 0x6a) 582 #define EFI_UGA_PROTOCOL_GUID EFI_GUID(0x982c298b, 0xf4fa, 0x41cb, 0xb8, 0x38, 0x77, 0xaa, 0x68, 0x8f, 0xb8, 0x39) 583 #define EFI_PCI_IO_PROTOCOL_GUID EFI_GUID(0x4cf5b200, 0x68b8, 0x4ca5, 0x9e, 0xec, 0xb2, 0x3e, 0x3f, 0x50, 0x02, 0x9a) 584 #define EFI_FILE_INFO_ID EFI_GUID(0x09576e92, 0x6d3f, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 585 #define EFI_SYSTEM_RESOURCE_TABLE_GUID EFI_GUID(0xb122a263, 0x3661, 0x4f68, 0x99, 0x29, 0x78, 0xf8, 0xb0, 0xd6, 0x21, 0x80) 586 #define EFI_FILE_SYSTEM_GUID EFI_GUID(0x964e5b22, 0x6459, 0x11d2, 0x8e, 0x39, 0x00, 0xa0, 0xc9, 0x69, 0x72, 0x3b) 587 #define DEVICE_TREE_GUID EFI_GUID(0xb1b621d5, 0xf19c, 0x41a5, 0x83, 0x0b, 0xd9, 0x15, 0x2c, 0x69, 0xaa, 0xe0) 588 #define EFI_PROPERTIES_TABLE_GUID EFI_GUID(0x880aaca3, 0x4adc, 0x4a04, 0x90, 0x79, 0xb7, 0x47, 0x34, 0x08, 0x25, 0xe5) 589 #define EFI_RNG_PROTOCOL_GUID EFI_GUID(0x3152bca5, 0xeade, 0x433d, 0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44) 590 #define EFI_MEMORY_ATTRIBUTES_TABLE_GUID EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20) 591 #define EFI_CONSOLE_OUT_DEVICE_GUID EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d) 592 593 /* 594 * This GUID is used to pass to the kernel proper the struct screen_info 595 * structure that was populated by the stub based on the GOP protocol instance 596 * associated with ConOut 597 */ 598 #define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, 0xb9, 0x0e, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95) 599 #define LINUX_EFI_LOADER_ENTRY_GUID EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f) 600 601 typedef struct { 602 efi_guid_t guid; 603 u64 table; 604 } efi_config_table_64_t; 605 606 typedef struct { 607 efi_guid_t guid; 608 u32 table; 609 } efi_config_table_32_t; 610 611 typedef struct { 612 efi_guid_t guid; 613 unsigned long table; 614 } efi_config_table_t; 615 616 typedef struct { 617 efi_guid_t guid; 618 const char *name; 619 unsigned long *ptr; 620 } efi_config_table_type_t; 621 622 #define EFI_SYSTEM_TABLE_SIGNATURE ((u64)0x5453595320494249ULL) 623 624 #define EFI_2_30_SYSTEM_TABLE_REVISION ((2 << 16) | (30)) 625 #define EFI_2_20_SYSTEM_TABLE_REVISION ((2 << 16) | (20)) 626 #define EFI_2_10_SYSTEM_TABLE_REVISION ((2 << 16) | (10)) 627 #define EFI_2_00_SYSTEM_TABLE_REVISION ((2 << 16) | (00)) 628 #define EFI_1_10_SYSTEM_TABLE_REVISION ((1 << 16) | (10)) 629 #define EFI_1_02_SYSTEM_TABLE_REVISION ((1 << 16) | (02)) 630 631 typedef struct { 632 efi_table_hdr_t hdr; 633 u64 fw_vendor; /* physical addr of CHAR16 vendor string */ 634 u32 fw_revision; 635 u32 __pad1; 636 u64 con_in_handle; 637 u64 con_in; 638 u64 con_out_handle; 639 u64 con_out; 640 u64 stderr_handle; 641 u64 stderr; 642 u64 runtime; 643 u64 boottime; 644 u32 nr_tables; 645 u32 __pad2; 646 u64 tables; 647 } efi_system_table_64_t; 648 649 typedef struct { 650 efi_table_hdr_t hdr; 651 u32 fw_vendor; /* physical addr of CHAR16 vendor string */ 652 u32 fw_revision; 653 u32 con_in_handle; 654 u32 con_in; 655 u32 con_out_handle; 656 u32 con_out; 657 u32 stderr_handle; 658 u32 stderr; 659 u32 runtime; 660 u32 boottime; 661 u32 nr_tables; 662 u32 tables; 663 } efi_system_table_32_t; 664 665 typedef struct { 666 efi_table_hdr_t hdr; 667 unsigned long fw_vendor; /* physical addr of CHAR16 vendor string */ 668 u32 fw_revision; 669 unsigned long con_in_handle; 670 unsigned long con_in; 671 unsigned long con_out_handle; 672 unsigned long con_out; 673 unsigned long stderr_handle; 674 unsigned long stderr; 675 efi_runtime_services_t *runtime; 676 efi_boot_services_t *boottime; 677 unsigned long nr_tables; 678 unsigned long tables; 679 } efi_system_table_t; 680 681 struct efi_memory_map { 682 phys_addr_t phys_map; 683 void *map; 684 void *map_end; 685 int nr_map; 686 unsigned long desc_version; 687 unsigned long desc_size; 688 }; 689 690 struct efi_fdt_params { 691 u64 system_table; 692 u64 mmap; 693 u32 mmap_size; 694 u32 desc_size; 695 u32 desc_ver; 696 }; 697 698 typedef struct { 699 u32 revision; 700 u32 parent_handle; 701 u32 system_table; 702 u32 device_handle; 703 u32 file_path; 704 u32 reserved; 705 u32 load_options_size; 706 u32 load_options; 707 u32 image_base; 708 __aligned_u64 image_size; 709 unsigned int image_code_type; 710 unsigned int image_data_type; 711 unsigned long unload; 712 } efi_loaded_image_32_t; 713 714 typedef struct { 715 u32 revision; 716 u64 parent_handle; 717 u64 system_table; 718 u64 device_handle; 719 u64 file_path; 720 u64 reserved; 721 u32 load_options_size; 722 u64 load_options; 723 u64 image_base; 724 __aligned_u64 image_size; 725 unsigned int image_code_type; 726 unsigned int image_data_type; 727 unsigned long unload; 728 } efi_loaded_image_64_t; 729 730 typedef struct { 731 u32 revision; 732 void *parent_handle; 733 efi_system_table_t *system_table; 734 void *device_handle; 735 void *file_path; 736 void *reserved; 737 u32 load_options_size; 738 void *load_options; 739 void *image_base; 740 __aligned_u64 image_size; 741 unsigned int image_code_type; 742 unsigned int image_data_type; 743 unsigned long unload; 744 } efi_loaded_image_t; 745 746 747 typedef struct { 748 u64 size; 749 u64 file_size; 750 u64 phys_size; 751 efi_time_t create_time; 752 efi_time_t last_access_time; 753 efi_time_t modification_time; 754 __aligned_u64 attribute; 755 efi_char16_t filename[1]; 756 } efi_file_info_t; 757 758 typedef struct { 759 u64 revision; 760 u32 open; 761 u32 close; 762 u32 delete; 763 u32 read; 764 u32 write; 765 u32 get_position; 766 u32 set_position; 767 u32 get_info; 768 u32 set_info; 769 u32 flush; 770 } efi_file_handle_32_t; 771 772 typedef struct { 773 u64 revision; 774 u64 open; 775 u64 close; 776 u64 delete; 777 u64 read; 778 u64 write; 779 u64 get_position; 780 u64 set_position; 781 u64 get_info; 782 u64 set_info; 783 u64 flush; 784 } efi_file_handle_64_t; 785 786 typedef struct _efi_file_handle { 787 u64 revision; 788 efi_status_t (*open)(struct _efi_file_handle *, 789 struct _efi_file_handle **, 790 efi_char16_t *, u64, u64); 791 efi_status_t (*close)(struct _efi_file_handle *); 792 void *delete; 793 efi_status_t (*read)(struct _efi_file_handle *, unsigned long *, 794 void *); 795 void *write; 796 void *get_position; 797 void *set_position; 798 efi_status_t (*get_info)(struct _efi_file_handle *, efi_guid_t *, 799 unsigned long *, void *); 800 void *set_info; 801 void *flush; 802 } efi_file_handle_t; 803 804 typedef struct _efi_file_io_interface { 805 u64 revision; 806 int (*open_volume)(struct _efi_file_io_interface *, 807 efi_file_handle_t **); 808 } efi_file_io_interface_t; 809 810 #define EFI_FILE_MODE_READ 0x0000000000000001 811 #define EFI_FILE_MODE_WRITE 0x0000000000000002 812 #define EFI_FILE_MODE_CREATE 0x8000000000000000 813 814 typedef struct { 815 u32 version; 816 u32 length; 817 u64 memory_protection_attribute; 818 } efi_properties_table_t; 819 820 #define EFI_PROPERTIES_TABLE_VERSION 0x00010000 821 #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 822 823 #define EFI_INVALID_TABLE_ADDR (~0UL) 824 825 typedef struct { 826 u32 version; 827 u32 num_entries; 828 u32 desc_size; 829 u32 reserved; 830 efi_memory_desc_t entry[0]; 831 } efi_memory_attributes_table_t; 832 833 /* 834 * All runtime access to EFI goes through this structure: 835 */ 836 extern struct efi { 837 efi_system_table_t *systab; /* EFI system table */ 838 unsigned int runtime_version; /* Runtime services version */ 839 unsigned long mps; /* MPS table */ 840 unsigned long acpi; /* ACPI table (IA64 ext 0.71) */ 841 unsigned long acpi20; /* ACPI table (ACPI 2.0) */ 842 unsigned long smbios; /* SMBIOS table (32 bit entry point) */ 843 unsigned long smbios3; /* SMBIOS table (64 bit entry point) */ 844 unsigned long sal_systab; /* SAL system table */ 845 unsigned long boot_info; /* boot info table */ 846 unsigned long hcdp; /* HCDP table */ 847 unsigned long uga; /* UGA table */ 848 unsigned long uv_systab; /* UV system table */ 849 unsigned long fw_vendor; /* fw_vendor */ 850 unsigned long runtime; /* runtime table */ 851 unsigned long config_table; /* config tables */ 852 unsigned long esrt; /* ESRT table */ 853 unsigned long properties_table; /* properties table */ 854 unsigned long mem_attr_table; /* memory attributes table */ 855 efi_get_time_t *get_time; 856 efi_set_time_t *set_time; 857 efi_get_wakeup_time_t *get_wakeup_time; 858 efi_set_wakeup_time_t *set_wakeup_time; 859 efi_get_variable_t *get_variable; 860 efi_get_next_variable_t *get_next_variable; 861 efi_set_variable_t *set_variable; 862 efi_set_variable_t *set_variable_nonblocking; 863 efi_query_variable_info_t *query_variable_info; 864 efi_query_variable_info_t *query_variable_info_nonblocking; 865 efi_update_capsule_t *update_capsule; 866 efi_query_capsule_caps_t *query_capsule_caps; 867 efi_get_next_high_mono_count_t *get_next_high_mono_count; 868 efi_reset_system_t *reset_system; 869 efi_set_virtual_address_map_t *set_virtual_address_map; 870 struct efi_memory_map memmap; 871 unsigned long flags; 872 } efi; 873 874 static inline int 875 efi_guidcmp (efi_guid_t left, efi_guid_t right) 876 { 877 return memcmp(&left, &right, sizeof (efi_guid_t)); 878 } 879 880 static inline char * 881 efi_guid_to_str(efi_guid_t *guid, char *out) 882 { 883 sprintf(out, "%pUl", guid->b); 884 return out; 885 } 886 887 extern void efi_init (void); 888 extern void *efi_get_pal_addr (void); 889 extern void efi_map_pal_code (void); 890 extern void efi_memmap_walk (efi_freemem_callback_t callback, void *arg); 891 extern void efi_gettimeofday (struct timespec64 *ts); 892 extern void efi_enter_virtual_mode (void); /* switch EFI to virtual mode, if possible */ 893 #ifdef CONFIG_X86 894 extern void efi_late_init(void); 895 extern void efi_free_boot_services(void); 896 extern efi_status_t efi_query_variable_store(u32 attributes, 897 unsigned long size, 898 bool nonblocking); 899 extern void efi_find_mirror(void); 900 #else 901 static inline void efi_late_init(void) {} 902 static inline void efi_free_boot_services(void) {} 903 904 static inline efi_status_t efi_query_variable_store(u32 attributes, 905 unsigned long size, 906 bool nonblocking) 907 { 908 return EFI_SUCCESS; 909 } 910 #endif 911 extern void __iomem *efi_lookup_mapped_addr(u64 phys_addr); 912 extern int efi_config_init(efi_config_table_type_t *arch_tables); 913 #ifdef CONFIG_EFI_ESRT 914 extern void __init efi_esrt_init(void); 915 #else 916 static inline void efi_esrt_init(void) { } 917 #endif 918 extern int efi_config_parse_tables(void *config_tables, int count, int sz, 919 efi_config_table_type_t *arch_tables); 920 extern u64 efi_get_iobase (void); 921 extern u32 efi_mem_type (unsigned long phys_addr); 922 extern u64 efi_mem_attributes (unsigned long phys_addr); 923 extern u64 efi_mem_attribute (unsigned long phys_addr, unsigned long size); 924 extern int __init efi_uart_console_only (void); 925 extern u64 efi_mem_desc_end(efi_memory_desc_t *md); 926 extern int efi_mem_desc_lookup(u64 phys_addr, efi_memory_desc_t *out_md); 927 extern void efi_initialize_iomem_resources(struct resource *code_resource, 928 struct resource *data_resource, struct resource *bss_resource); 929 extern void efi_reserve_boot_services(void); 930 extern int efi_get_fdt_params(struct efi_fdt_params *params); 931 extern struct kobject *efi_kobj; 932 933 extern int efi_reboot_quirk_mode; 934 extern bool efi_poweroff_required(void); 935 936 #ifdef CONFIG_EFI_FAKE_MEMMAP 937 extern void __init efi_fake_memmap(void); 938 #else 939 static inline void efi_fake_memmap(void) { } 940 #endif 941 942 /* 943 * efi_memattr_perm_setter - arch specific callback function passed into 944 * efi_memattr_apply_permissions() that updates the 945 * mapping permissions described by the second 946 * argument in the page tables referred to by the 947 * first argument. 948 */ 949 typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *); 950 951 extern int efi_memattr_init(void); 952 extern int efi_memattr_apply_permissions(struct mm_struct *mm, 953 efi_memattr_perm_setter fn); 954 955 /* Iterate through an efi_memory_map */ 956 #define for_each_efi_memory_desc_in_map(m, md) \ 957 for ((md) = (m)->map; \ 958 (md) && ((void *)(md) + (m)->desc_size) <= (m)->map_end; \ 959 (md) = (void *)(md) + (m)->desc_size) 960 961 /** 962 * for_each_efi_memory_desc - iterate over descriptors in efi.memmap 963 * @md: the efi_memory_desc_t * iterator 964 * 965 * Once the loop finishes @md must not be accessed. 966 */ 967 #define for_each_efi_memory_desc(md) \ 968 for_each_efi_memory_desc_in_map(&efi.memmap, md) 969 970 /* 971 * Format an EFI memory descriptor's type and attributes to a user-provided 972 * character buffer, as per snprintf(), and return the buffer. 973 */ 974 char * __init efi_md_typeattr_format(char *buf, size_t size, 975 const efi_memory_desc_t *md); 976 977 /** 978 * efi_range_is_wc - check the WC bit on an address range 979 * @start: starting kvirt address 980 * @len: length of range 981 * 982 * Consult the EFI memory map and make sure it's ok to set this range WC. 983 * Returns true or false. 984 */ 985 static inline int efi_range_is_wc(unsigned long start, unsigned long len) 986 { 987 unsigned long i; 988 989 for (i = 0; i < len; i += (1UL << EFI_PAGE_SHIFT)) { 990 unsigned long paddr = __pa(start + i); 991 if (!(efi_mem_attributes(paddr) & EFI_MEMORY_WC)) 992 return 0; 993 } 994 /* The range checked out */ 995 return 1; 996 } 997 998 #ifdef CONFIG_EFI_PCDP 999 extern int __init efi_setup_pcdp_console(char *); 1000 #endif 1001 1002 /* 1003 * We play games with efi_enabled so that the compiler will, if 1004 * possible, remove EFI-related code altogether. 1005 */ 1006 #define EFI_BOOT 0 /* Were we booted from EFI? */ 1007 #define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */ 1008 #define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */ 1009 #define EFI_MEMMAP 4 /* Can we use EFI memory map? */ 1010 #define EFI_64BIT 5 /* Is the firmware 64-bit? */ 1011 #define EFI_PARAVIRT 6 /* Access is via a paravirt interface */ 1012 #define EFI_ARCH_1 7 /* First arch-specific bit */ 1013 #define EFI_DBG 8 /* Print additional debug info at runtime */ 1014 #define EFI_NX_PE_DATA 9 /* Can runtime data regions be mapped non-executable? */ 1015 1016 #ifdef CONFIG_EFI 1017 /* 1018 * Test whether the above EFI_* bits are enabled. 1019 */ 1020 static inline bool efi_enabled(int feature) 1021 { 1022 return test_bit(feature, &efi.flags) != 0; 1023 } 1024 extern void efi_reboot(enum reboot_mode reboot_mode, const char *__unused); 1025 #else 1026 static inline bool efi_enabled(int feature) 1027 { 1028 return false; 1029 } 1030 static inline void 1031 efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {} 1032 1033 static inline bool 1034 efi_capsule_pending(int *reset_type) 1035 { 1036 return false; 1037 } 1038 #endif 1039 1040 extern int efi_status_to_err(efi_status_t status); 1041 1042 /* 1043 * Variable Attributes 1044 */ 1045 #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 1046 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 1047 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 1048 #define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 1049 #define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 1050 #define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 1051 #define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 1052 1053 #define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ 1054 EFI_VARIABLE_BOOTSERVICE_ACCESS | \ 1055 EFI_VARIABLE_RUNTIME_ACCESS | \ 1056 EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ 1057 EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ 1058 EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ 1059 EFI_VARIABLE_APPEND_WRITE) 1060 /* 1061 * Length of a GUID string (strlen("aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee")) 1062 * not including trailing NUL 1063 */ 1064 #define EFI_VARIABLE_GUID_LEN UUID_STRING_LEN 1065 1066 /* 1067 * The type of search to perform when calling boottime->locate_handle 1068 */ 1069 #define EFI_LOCATE_ALL_HANDLES 0 1070 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 1071 #define EFI_LOCATE_BY_PROTOCOL 2 1072 1073 /* 1074 * EFI Device Path information 1075 */ 1076 #define EFI_DEV_HW 0x01 1077 #define EFI_DEV_PCI 1 1078 #define EFI_DEV_PCCARD 2 1079 #define EFI_DEV_MEM_MAPPED 3 1080 #define EFI_DEV_VENDOR 4 1081 #define EFI_DEV_CONTROLLER 5 1082 #define EFI_DEV_ACPI 0x02 1083 #define EFI_DEV_BASIC_ACPI 1 1084 #define EFI_DEV_EXPANDED_ACPI 2 1085 #define EFI_DEV_MSG 0x03 1086 #define EFI_DEV_MSG_ATAPI 1 1087 #define EFI_DEV_MSG_SCSI 2 1088 #define EFI_DEV_MSG_FC 3 1089 #define EFI_DEV_MSG_1394 4 1090 #define EFI_DEV_MSG_USB 5 1091 #define EFI_DEV_MSG_USB_CLASS 15 1092 #define EFI_DEV_MSG_I20 6 1093 #define EFI_DEV_MSG_MAC 11 1094 #define EFI_DEV_MSG_IPV4 12 1095 #define EFI_DEV_MSG_IPV6 13 1096 #define EFI_DEV_MSG_INFINIBAND 9 1097 #define EFI_DEV_MSG_UART 14 1098 #define EFI_DEV_MSG_VENDOR 10 1099 #define EFI_DEV_MEDIA 0x04 1100 #define EFI_DEV_MEDIA_HARD_DRIVE 1 1101 #define EFI_DEV_MEDIA_CDROM 2 1102 #define EFI_DEV_MEDIA_VENDOR 3 1103 #define EFI_DEV_MEDIA_FILE 4 1104 #define EFI_DEV_MEDIA_PROTOCOL 5 1105 #define EFI_DEV_BIOS_BOOT 0x05 1106 #define EFI_DEV_END_PATH 0x7F 1107 #define EFI_DEV_END_PATH2 0xFF 1108 #define EFI_DEV_END_INSTANCE 0x01 1109 #define EFI_DEV_END_ENTIRE 0xFF 1110 1111 struct efi_generic_dev_path { 1112 u8 type; 1113 u8 sub_type; 1114 u16 length; 1115 } __attribute ((packed)); 1116 1117 static inline void memrange_efi_to_native(u64 *addr, u64 *npages) 1118 { 1119 *npages = PFN_UP(*addr + (*npages<<EFI_PAGE_SHIFT)) - PFN_DOWN(*addr); 1120 *addr &= PAGE_MASK; 1121 } 1122 1123 /* 1124 * EFI Variable support. 1125 * 1126 * Different firmware drivers can expose their EFI-like variables using 1127 * the following. 1128 */ 1129 1130 struct efivar_operations { 1131 efi_get_variable_t *get_variable; 1132 efi_get_next_variable_t *get_next_variable; 1133 efi_set_variable_t *set_variable; 1134 efi_set_variable_t *set_variable_nonblocking; 1135 efi_query_variable_store_t *query_variable_store; 1136 }; 1137 1138 struct efivars { 1139 /* 1140 * ->lock protects two things: 1141 * 1) efivarfs_list and efivars_sysfs_list 1142 * 2) ->ops calls 1143 */ 1144 spinlock_t lock; 1145 struct kset *kset; 1146 struct kobject *kobject; 1147 const struct efivar_operations *ops; 1148 }; 1149 1150 /* 1151 * The maximum size of VariableName + Data = 1024 1152 * Therefore, it's reasonable to save that much 1153 * space in each part of the structure, 1154 * and we use a page for reading/writing. 1155 */ 1156 1157 #define EFI_VAR_NAME_LEN 1024 1158 1159 struct efi_variable { 1160 efi_char16_t VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)]; 1161 efi_guid_t VendorGuid; 1162 unsigned long DataSize; 1163 __u8 Data[1024]; 1164 efi_status_t Status; 1165 __u32 Attributes; 1166 } __attribute__((packed)); 1167 1168 struct efivar_entry { 1169 struct efi_variable var; 1170 struct list_head list; 1171 struct kobject kobj; 1172 bool scanning; 1173 bool deleting; 1174 }; 1175 1176 struct efi_simple_text_output_protocol_32 { 1177 u32 reset; 1178 u32 output_string; 1179 u32 test_string; 1180 }; 1181 1182 struct efi_simple_text_output_protocol_64 { 1183 u64 reset; 1184 u64 output_string; 1185 u64 test_string; 1186 }; 1187 1188 struct efi_simple_text_output_protocol { 1189 void *reset; 1190 efi_status_t (*output_string)(void *, void *); 1191 void *test_string; 1192 }; 1193 1194 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 1195 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 1196 #define PIXEL_BIT_MASK 2 1197 #define PIXEL_BLT_ONLY 3 1198 #define PIXEL_FORMAT_MAX 4 1199 1200 struct efi_pixel_bitmask { 1201 u32 red_mask; 1202 u32 green_mask; 1203 u32 blue_mask; 1204 u32 reserved_mask; 1205 }; 1206 1207 struct efi_graphics_output_mode_info { 1208 u32 version; 1209 u32 horizontal_resolution; 1210 u32 vertical_resolution; 1211 int pixel_format; 1212 struct efi_pixel_bitmask pixel_information; 1213 u32 pixels_per_scan_line; 1214 } __packed; 1215 1216 struct efi_graphics_output_protocol_mode_32 { 1217 u32 max_mode; 1218 u32 mode; 1219 u32 info; 1220 u32 size_of_info; 1221 u64 frame_buffer_base; 1222 u32 frame_buffer_size; 1223 } __packed; 1224 1225 struct efi_graphics_output_protocol_mode_64 { 1226 u32 max_mode; 1227 u32 mode; 1228 u64 info; 1229 u64 size_of_info; 1230 u64 frame_buffer_base; 1231 u64 frame_buffer_size; 1232 } __packed; 1233 1234 struct efi_graphics_output_protocol_mode { 1235 u32 max_mode; 1236 u32 mode; 1237 unsigned long info; 1238 unsigned long size_of_info; 1239 u64 frame_buffer_base; 1240 unsigned long frame_buffer_size; 1241 } __packed; 1242 1243 struct efi_graphics_output_protocol_32 { 1244 u32 query_mode; 1245 u32 set_mode; 1246 u32 blt; 1247 u32 mode; 1248 }; 1249 1250 struct efi_graphics_output_protocol_64 { 1251 u64 query_mode; 1252 u64 set_mode; 1253 u64 blt; 1254 u64 mode; 1255 }; 1256 1257 struct efi_graphics_output_protocol { 1258 unsigned long query_mode; 1259 unsigned long set_mode; 1260 unsigned long blt; 1261 struct efi_graphics_output_protocol_mode *mode; 1262 }; 1263 1264 typedef efi_status_t (*efi_graphics_output_protocol_query_mode)( 1265 struct efi_graphics_output_protocol *, u32, unsigned long *, 1266 struct efi_graphics_output_mode_info **); 1267 1268 extern struct list_head efivar_sysfs_list; 1269 1270 static inline void 1271 efivar_unregister(struct efivar_entry *var) 1272 { 1273 kobject_put(&var->kobj); 1274 } 1275 1276 int efivars_register(struct efivars *efivars, 1277 const struct efivar_operations *ops, 1278 struct kobject *kobject); 1279 int efivars_unregister(struct efivars *efivars); 1280 struct kobject *efivars_kobject(void); 1281 1282 int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *), 1283 void *data, bool duplicates, struct list_head *head); 1284 1285 void efivar_entry_add(struct efivar_entry *entry, struct list_head *head); 1286 void efivar_entry_remove(struct efivar_entry *entry); 1287 1288 int __efivar_entry_delete(struct efivar_entry *entry); 1289 int efivar_entry_delete(struct efivar_entry *entry); 1290 1291 int efivar_entry_size(struct efivar_entry *entry, unsigned long *size); 1292 int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1293 unsigned long *size, void *data); 1294 int efivar_entry_get(struct efivar_entry *entry, u32 *attributes, 1295 unsigned long *size, void *data); 1296 int efivar_entry_set(struct efivar_entry *entry, u32 attributes, 1297 unsigned long size, void *data, struct list_head *head); 1298 int efivar_entry_set_get_size(struct efivar_entry *entry, u32 attributes, 1299 unsigned long *size, void *data, bool *set); 1300 int efivar_entry_set_safe(efi_char16_t *name, efi_guid_t vendor, u32 attributes, 1301 bool block, unsigned long size, void *data); 1302 1303 void efivar_entry_iter_begin(void); 1304 void efivar_entry_iter_end(void); 1305 1306 int __efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1307 struct list_head *head, void *data, 1308 struct efivar_entry **prev); 1309 int efivar_entry_iter(int (*func)(struct efivar_entry *, void *), 1310 struct list_head *head, void *data); 1311 1312 struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid, 1313 struct list_head *head, bool remove); 1314 1315 bool efivar_validate(efi_guid_t vendor, efi_char16_t *var_name, u8 *data, 1316 unsigned long data_size); 1317 bool efivar_variable_is_removable(efi_guid_t vendor, const char *name, 1318 size_t len); 1319 1320 extern struct work_struct efivar_work; 1321 void efivar_run_worker(void); 1322 1323 #if defined(CONFIG_EFI_VARS) || defined(CONFIG_EFI_VARS_MODULE) 1324 int efivars_sysfs_init(void); 1325 1326 #define EFIVARS_DATA_SIZE_MAX 1024 1327 1328 #endif /* CONFIG_EFI_VARS */ 1329 extern bool efi_capsule_pending(int *reset_type); 1330 1331 extern int efi_capsule_supported(efi_guid_t guid, u32 flags, 1332 size_t size, int *reset); 1333 1334 extern int efi_capsule_update(efi_capsule_header_t *capsule, 1335 struct page **pages); 1336 1337 #ifdef CONFIG_EFI_RUNTIME_MAP 1338 int efi_runtime_map_init(struct kobject *); 1339 void efi_runtime_map_setup(void *, int, u32); 1340 int efi_get_runtime_map_size(void); 1341 int efi_get_runtime_map_desc_size(void); 1342 int efi_runtime_map_copy(void *buf, size_t bufsz); 1343 #else 1344 static inline int efi_runtime_map_init(struct kobject *kobj) 1345 { 1346 return 0; 1347 } 1348 1349 static inline void 1350 efi_runtime_map_setup(void *map, int nr_entries, u32 desc_size) {} 1351 1352 static inline int efi_get_runtime_map_size(void) 1353 { 1354 return 0; 1355 } 1356 1357 static inline int efi_get_runtime_map_desc_size(void) 1358 { 1359 return 0; 1360 } 1361 1362 static inline int efi_runtime_map_copy(void *buf, size_t bufsz) 1363 { 1364 return 0; 1365 } 1366 1367 #endif 1368 1369 /* prototypes shared between arch specific and generic stub code */ 1370 1371 #define pr_efi(sys_table, msg) efi_printk(sys_table, "EFI stub: "msg) 1372 #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 1373 1374 void efi_printk(efi_system_table_t *sys_table_arg, char *str); 1375 1376 void efi_free(efi_system_table_t *sys_table_arg, unsigned long size, 1377 unsigned long addr); 1378 1379 char *efi_convert_cmdline(efi_system_table_t *sys_table_arg, 1380 efi_loaded_image_t *image, int *cmd_line_len); 1381 1382 efi_status_t efi_get_memory_map(efi_system_table_t *sys_table_arg, 1383 struct efi_boot_memmap *map); 1384 1385 efi_status_t efi_low_alloc(efi_system_table_t *sys_table_arg, 1386 unsigned long size, unsigned long align, 1387 unsigned long *addr); 1388 1389 efi_status_t efi_high_alloc(efi_system_table_t *sys_table_arg, 1390 unsigned long size, unsigned long align, 1391 unsigned long *addr, unsigned long max); 1392 1393 efi_status_t efi_relocate_kernel(efi_system_table_t *sys_table_arg, 1394 unsigned long *image_addr, 1395 unsigned long image_size, 1396 unsigned long alloc_size, 1397 unsigned long preferred_addr, 1398 unsigned long alignment); 1399 1400 efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg, 1401 efi_loaded_image_t *image, 1402 char *cmd_line, char *option_string, 1403 unsigned long max_addr, 1404 unsigned long *load_addr, 1405 unsigned long *load_size); 1406 1407 efi_status_t efi_parse_options(char *cmdline); 1408 1409 efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, 1410 struct screen_info *si, efi_guid_t *proto, 1411 unsigned long size); 1412 1413 bool efi_runtime_disabled(void); 1414 extern void efi_call_virt_check_flags(unsigned long flags, const char *call); 1415 1416 /* 1417 * Arch code can implement the following three template macros, avoiding 1418 * reptition for the void/non-void return cases of {__,}efi_call_virt(): 1419 * 1420 * * arch_efi_call_virt_setup() 1421 * 1422 * Sets up the environment for the call (e.g. switching page tables, 1423 * allowing kernel-mode use of floating point, if required). 1424 * 1425 * * arch_efi_call_virt() 1426 * 1427 * Performs the call. The last expression in the macro must be the call 1428 * itself, allowing the logic to be shared by the void and non-void 1429 * cases. 1430 * 1431 * * arch_efi_call_virt_teardown() 1432 * 1433 * Restores the usual kernel environment once the call has returned. 1434 */ 1435 1436 #define efi_call_virt_pointer(p, f, args...) \ 1437 ({ \ 1438 efi_status_t __s; \ 1439 unsigned long __flags; \ 1440 \ 1441 arch_efi_call_virt_setup(); \ 1442 \ 1443 local_save_flags(__flags); \ 1444 __s = arch_efi_call_virt(p, f, args); \ 1445 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1446 \ 1447 arch_efi_call_virt_teardown(); \ 1448 \ 1449 __s; \ 1450 }) 1451 1452 #define __efi_call_virt_pointer(p, f, args...) \ 1453 ({ \ 1454 unsigned long __flags; \ 1455 \ 1456 arch_efi_call_virt_setup(); \ 1457 \ 1458 local_save_flags(__flags); \ 1459 arch_efi_call_virt(p, f, args); \ 1460 efi_call_virt_check_flags(__flags, __stringify(f)); \ 1461 \ 1462 arch_efi_call_virt_teardown(); \ 1463 }) 1464 1465 typedef efi_status_t (*efi_exit_boot_map_processing)( 1466 efi_system_table_t *sys_table_arg, 1467 struct efi_boot_memmap *map, 1468 void *priv); 1469 1470 efi_status_t efi_exit_boot_services(efi_system_table_t *sys_table, 1471 void *handle, 1472 struct efi_boot_memmap *map, 1473 void *priv, 1474 efi_exit_boot_map_processing priv_func); 1475 #endif /* _LINUX_EFI_H */ 1476