1 /* SPDX-License-Identifier: GPL-2.0 */ 2 3 #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H 4 #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H 5 6 #include <linux/compiler.h> 7 #include <linux/efi.h> 8 #include <linux/kernel.h> 9 #include <linux/kern_levels.h> 10 #include <linux/types.h> 11 #include <asm/efi.h> 12 13 /* error code which can't be mistaken for valid address */ 14 #define EFI_ERROR (~0UL) 15 16 /* 17 * __init annotations should not be used in the EFI stub, since the code is 18 * either included in the decompressor (x86, ARM) where they have no effect, 19 * or the whole stub is __init annotated at the section level (arm64), by 20 * renaming the sections, in which case the __init annotation will be 21 * redundant, and will result in section names like .init.init.text, and our 22 * linker script does not expect that. 23 */ 24 #undef __init 25 26 /* 27 * Allow the platform to override the allocation granularity: this allows 28 * systems that have the capability to run with a larger page size to deal 29 * with the allocations for initrd and fdt more efficiently. 30 */ 31 #ifndef EFI_ALLOC_ALIGN 32 #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE 33 #endif 34 35 extern bool efi_nochunk; 36 extern bool efi_nokaslr; 37 extern bool efi_noinitrd; 38 extern int efi_loglevel; 39 extern bool efi_novamap; 40 41 extern const efi_system_table_t *efi_system_table; 42 43 efi_status_t __efiapi efi_pe_entry(efi_handle_t handle, 44 efi_system_table_t *sys_table_arg); 45 46 #ifndef ARCH_HAS_EFISTUB_WRAPPERS 47 48 #define efi_is_native() (true) 49 #define efi_bs_call(func, ...) efi_system_table->boottime->func(__VA_ARGS__) 50 #define efi_rt_call(func, ...) efi_system_table->runtime->func(__VA_ARGS__) 51 #define efi_table_attr(inst, attr) (inst->attr) 52 #define efi_call_proto(inst, func, ...) inst->func(inst, ##__VA_ARGS__) 53 54 #endif 55 56 #define efi_info(fmt, ...) \ 57 efi_printk(KERN_INFO fmt, ##__VA_ARGS__) 58 #define efi_err(fmt, ...) \ 59 efi_printk(KERN_ERR "ERROR: " fmt, ##__VA_ARGS__) 60 #define efi_debug(fmt, ...) \ 61 efi_printk(KERN_DEBUG "DEBUG: " fmt, ##__VA_ARGS__) 62 63 /* Helper macros for the usual case of using simple C variables: */ 64 #ifndef fdt_setprop_inplace_var 65 #define fdt_setprop_inplace_var(fdt, node_offset, name, var) \ 66 fdt_setprop_inplace((fdt), (node_offset), (name), &(var), sizeof(var)) 67 #endif 68 69 #ifndef fdt_setprop_var 70 #define fdt_setprop_var(fdt, node_offset, name, var) \ 71 fdt_setprop((fdt), (node_offset), (name), &(var), sizeof(var)) 72 #endif 73 74 #define get_efi_var(name, vendor, ...) \ 75 efi_rt_call(get_variable, (efi_char16_t *)(name), \ 76 (efi_guid_t *)(vendor), __VA_ARGS__) 77 78 #define set_efi_var(name, vendor, ...) \ 79 efi_rt_call(set_variable, (efi_char16_t *)(name), \ 80 (efi_guid_t *)(vendor), __VA_ARGS__) 81 82 #define efi_get_handle_at(array, idx) \ 83 (efi_is_native() ? (array)[idx] \ 84 : (efi_handle_t)(unsigned long)((u32 *)(array))[idx]) 85 86 #define efi_get_handle_num(size) \ 87 ((size) / (efi_is_native() ? sizeof(efi_handle_t) : sizeof(u32))) 88 89 #define for_each_efi_handle(handle, array, size, i) \ 90 for (i = 0; \ 91 i < efi_get_handle_num(size) && \ 92 ((handle = efi_get_handle_at((array), i)) || true); \ 93 i++) 94 95 static inline 96 void efi_set_u64_split(u64 data, u32 *lo, u32 *hi) 97 { 98 *lo = lower_32_bits(data); 99 *hi = upper_32_bits(data); 100 } 101 102 /* 103 * Allocation types for calls to boottime->allocate_pages. 104 */ 105 #define EFI_ALLOCATE_ANY_PAGES 0 106 #define EFI_ALLOCATE_MAX_ADDRESS 1 107 #define EFI_ALLOCATE_ADDRESS 2 108 #define EFI_MAX_ALLOCATE_TYPE 3 109 110 /* 111 * The type of search to perform when calling boottime->locate_handle 112 */ 113 #define EFI_LOCATE_ALL_HANDLES 0 114 #define EFI_LOCATE_BY_REGISTER_NOTIFY 1 115 #define EFI_LOCATE_BY_PROTOCOL 2 116 117 /* 118 * boottime->stall takes the time period in microseconds 119 */ 120 #define EFI_USEC_PER_SEC 1000000 121 122 /* 123 * boottime->set_timer takes the time in 100ns units 124 */ 125 #define EFI_100NSEC_PER_USEC ((u64)10) 126 127 /* 128 * An efi_boot_memmap is used by efi_get_memory_map() to return the 129 * EFI memory map in a dynamically allocated buffer. 130 * 131 * The buffer allocated for the EFI memory map includes extra room for 132 * a minimum of EFI_MMAP_NR_SLACK_SLOTS additional EFI memory descriptors. 133 * This facilitates the reuse of the EFI memory map buffer when a second 134 * call to ExitBootServices() is needed because of intervening changes to 135 * the EFI memory map. Other related structures, e.g. x86 e820ext, need 136 * to factor in this headroom requirement as well. 137 */ 138 #define EFI_MMAP_NR_SLACK_SLOTS 8 139 140 struct efi_boot_memmap { 141 efi_memory_desc_t **map; 142 unsigned long *map_size; 143 unsigned long *desc_size; 144 u32 *desc_ver; 145 unsigned long *key_ptr; 146 unsigned long *buff_size; 147 }; 148 149 typedef struct efi_generic_dev_path efi_device_path_protocol_t; 150 151 typedef void *efi_event_t; 152 /* Note that notifications won't work in mixed mode */ 153 typedef void (__efiapi *efi_event_notify_t)(efi_event_t, void *); 154 155 #define EFI_EVT_TIMER 0x80000000U 156 #define EFI_EVT_RUNTIME 0x40000000U 157 #define EFI_EVT_NOTIFY_WAIT 0x00000100U 158 #define EFI_EVT_NOTIFY_SIGNAL 0x00000200U 159 160 /** 161 * efi_set_event_at() - add event to events array 162 * 163 * @events: array of UEFI events 164 * @ids: index where to put the event in the array 165 * @event: event to add to the aray 166 * 167 * boottime->wait_for_event() takes an array of events as input. 168 * Provide a helper to set it up correctly for mixed mode. 169 */ 170 static inline 171 void efi_set_event_at(efi_event_t *events, size_t idx, efi_event_t event) 172 { 173 if (efi_is_native()) 174 events[idx] = event; 175 else 176 ((u32 *)events)[idx] = (u32)(unsigned long)event; 177 } 178 179 #define EFI_TPL_APPLICATION 4 180 #define EFI_TPL_CALLBACK 8 181 #define EFI_TPL_NOTIFY 16 182 #define EFI_TPL_HIGH_LEVEL 31 183 184 typedef enum { 185 EfiTimerCancel, 186 EfiTimerPeriodic, 187 EfiTimerRelative 188 } EFI_TIMER_DELAY; 189 190 /* 191 * EFI Boot Services table 192 */ 193 union efi_boot_services { 194 struct { 195 efi_table_hdr_t hdr; 196 void *raise_tpl; 197 void *restore_tpl; 198 efi_status_t (__efiapi *allocate_pages)(int, int, unsigned long, 199 efi_physical_addr_t *); 200 efi_status_t (__efiapi *free_pages)(efi_physical_addr_t, 201 unsigned long); 202 efi_status_t (__efiapi *get_memory_map)(unsigned long *, void *, 203 unsigned long *, 204 unsigned long *, u32 *); 205 efi_status_t (__efiapi *allocate_pool)(int, unsigned long, 206 void **); 207 efi_status_t (__efiapi *free_pool)(void *); 208 efi_status_t (__efiapi *create_event)(u32, unsigned long, 209 efi_event_notify_t, void *, 210 efi_event_t *); 211 efi_status_t (__efiapi *set_timer)(efi_event_t, 212 EFI_TIMER_DELAY, u64); 213 efi_status_t (__efiapi *wait_for_event)(unsigned long, 214 efi_event_t *, 215 unsigned long *); 216 void *signal_event; 217 efi_status_t (__efiapi *close_event)(efi_event_t); 218 void *check_event; 219 void *install_protocol_interface; 220 void *reinstall_protocol_interface; 221 void *uninstall_protocol_interface; 222 efi_status_t (__efiapi *handle_protocol)(efi_handle_t, 223 efi_guid_t *, void **); 224 void *__reserved; 225 void *register_protocol_notify; 226 efi_status_t (__efiapi *locate_handle)(int, efi_guid_t *, 227 void *, unsigned long *, 228 efi_handle_t *); 229 efi_status_t (__efiapi *locate_device_path)(efi_guid_t *, 230 efi_device_path_protocol_t **, 231 efi_handle_t *); 232 efi_status_t (__efiapi *install_configuration_table)(efi_guid_t *, 233 void *); 234 void *load_image; 235 void *start_image; 236 efi_status_t __noreturn (__efiapi *exit)(efi_handle_t, 237 efi_status_t, 238 unsigned long, 239 efi_char16_t *); 240 void *unload_image; 241 efi_status_t (__efiapi *exit_boot_services)(efi_handle_t, 242 unsigned long); 243 void *get_next_monotonic_count; 244 efi_status_t (__efiapi *stall)(unsigned long); 245 void *set_watchdog_timer; 246 void *connect_controller; 247 efi_status_t (__efiapi *disconnect_controller)(efi_handle_t, 248 efi_handle_t, 249 efi_handle_t); 250 void *open_protocol; 251 void *close_protocol; 252 void *open_protocol_information; 253 void *protocols_per_handle; 254 void *locate_handle_buffer; 255 efi_status_t (__efiapi *locate_protocol)(efi_guid_t *, void *, 256 void **); 257 void *install_multiple_protocol_interfaces; 258 void *uninstall_multiple_protocol_interfaces; 259 void *calculate_crc32; 260 void *copy_mem; 261 void *set_mem; 262 void *create_event_ex; 263 }; 264 struct { 265 efi_table_hdr_t hdr; 266 u32 raise_tpl; 267 u32 restore_tpl; 268 u32 allocate_pages; 269 u32 free_pages; 270 u32 get_memory_map; 271 u32 allocate_pool; 272 u32 free_pool; 273 u32 create_event; 274 u32 set_timer; 275 u32 wait_for_event; 276 u32 signal_event; 277 u32 close_event; 278 u32 check_event; 279 u32 install_protocol_interface; 280 u32 reinstall_protocol_interface; 281 u32 uninstall_protocol_interface; 282 u32 handle_protocol; 283 u32 __reserved; 284 u32 register_protocol_notify; 285 u32 locate_handle; 286 u32 locate_device_path; 287 u32 install_configuration_table; 288 u32 load_image; 289 u32 start_image; 290 u32 exit; 291 u32 unload_image; 292 u32 exit_boot_services; 293 u32 get_next_monotonic_count; 294 u32 stall; 295 u32 set_watchdog_timer; 296 u32 connect_controller; 297 u32 disconnect_controller; 298 u32 open_protocol; 299 u32 close_protocol; 300 u32 open_protocol_information; 301 u32 protocols_per_handle; 302 u32 locate_handle_buffer; 303 u32 locate_protocol; 304 u32 install_multiple_protocol_interfaces; 305 u32 uninstall_multiple_protocol_interfaces; 306 u32 calculate_crc32; 307 u32 copy_mem; 308 u32 set_mem; 309 u32 create_event_ex; 310 } mixed_mode; 311 }; 312 313 typedef union efi_uga_draw_protocol efi_uga_draw_protocol_t; 314 315 union efi_uga_draw_protocol { 316 struct { 317 efi_status_t (__efiapi *get_mode)(efi_uga_draw_protocol_t *, 318 u32*, u32*, u32*, u32*); 319 void *set_mode; 320 void *blt; 321 }; 322 struct { 323 u32 get_mode; 324 u32 set_mode; 325 u32 blt; 326 } mixed_mode; 327 }; 328 329 typedef struct { 330 u16 scan_code; 331 efi_char16_t unicode_char; 332 } efi_input_key_t; 333 334 union efi_simple_text_input_protocol { 335 struct { 336 void *reset; 337 efi_status_t (__efiapi *read_keystroke)(efi_simple_text_input_protocol_t *, 338 efi_input_key_t *); 339 efi_event_t wait_for_key; 340 }; 341 struct { 342 u32 reset; 343 u32 read_keystroke; 344 u32 wait_for_key; 345 } mixed_mode; 346 }; 347 348 efi_status_t efi_wait_for_key(unsigned long usec, efi_input_key_t *key); 349 350 union efi_simple_text_output_protocol { 351 struct { 352 void *reset; 353 efi_status_t (__efiapi *output_string)(efi_simple_text_output_protocol_t *, 354 efi_char16_t *); 355 void *test_string; 356 }; 357 struct { 358 u32 reset; 359 u32 output_string; 360 u32 test_string; 361 } mixed_mode; 362 }; 363 364 #define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0 365 #define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1 366 #define PIXEL_BIT_MASK 2 367 #define PIXEL_BLT_ONLY 3 368 #define PIXEL_FORMAT_MAX 4 369 370 typedef struct { 371 u32 red_mask; 372 u32 green_mask; 373 u32 blue_mask; 374 u32 reserved_mask; 375 } efi_pixel_bitmask_t; 376 377 typedef struct { 378 u32 version; 379 u32 horizontal_resolution; 380 u32 vertical_resolution; 381 int pixel_format; 382 efi_pixel_bitmask_t pixel_information; 383 u32 pixels_per_scan_line; 384 } efi_graphics_output_mode_info_t; 385 386 typedef union efi_graphics_output_protocol_mode efi_graphics_output_protocol_mode_t; 387 388 union efi_graphics_output_protocol_mode { 389 struct { 390 u32 max_mode; 391 u32 mode; 392 efi_graphics_output_mode_info_t *info; 393 unsigned long size_of_info; 394 efi_physical_addr_t frame_buffer_base; 395 unsigned long frame_buffer_size; 396 }; 397 struct { 398 u32 max_mode; 399 u32 mode; 400 u32 info; 401 u32 size_of_info; 402 u64 frame_buffer_base; 403 u32 frame_buffer_size; 404 } mixed_mode; 405 }; 406 407 typedef union efi_graphics_output_protocol efi_graphics_output_protocol_t; 408 409 union efi_graphics_output_protocol { 410 struct { 411 efi_status_t (__efiapi *query_mode)(efi_graphics_output_protocol_t *, 412 u32, unsigned long *, 413 efi_graphics_output_mode_info_t **); 414 efi_status_t (__efiapi *set_mode) (efi_graphics_output_protocol_t *, u32); 415 void *blt; 416 efi_graphics_output_protocol_mode_t *mode; 417 }; 418 struct { 419 u32 query_mode; 420 u32 set_mode; 421 u32 blt; 422 u32 mode; 423 } mixed_mode; 424 }; 425 426 typedef union { 427 struct { 428 u32 revision; 429 efi_handle_t parent_handle; 430 efi_system_table_t *system_table; 431 efi_handle_t device_handle; 432 void *file_path; 433 void *reserved; 434 u32 load_options_size; 435 void *load_options; 436 void *image_base; 437 __aligned_u64 image_size; 438 unsigned int image_code_type; 439 unsigned int image_data_type; 440 efi_status_t (__efiapi *unload)(efi_handle_t image_handle); 441 }; 442 struct { 443 u32 revision; 444 u32 parent_handle; 445 u32 system_table; 446 u32 device_handle; 447 u32 file_path; 448 u32 reserved; 449 u32 load_options_size; 450 u32 load_options; 451 u32 image_base; 452 __aligned_u64 image_size; 453 u32 image_code_type; 454 u32 image_data_type; 455 u32 unload; 456 } mixed_mode; 457 } efi_loaded_image_t; 458 459 typedef struct { 460 u64 size; 461 u64 file_size; 462 u64 phys_size; 463 efi_time_t create_time; 464 efi_time_t last_access_time; 465 efi_time_t modification_time; 466 __aligned_u64 attribute; 467 efi_char16_t filename[]; 468 } efi_file_info_t; 469 470 typedef struct efi_file_protocol efi_file_protocol_t; 471 472 struct efi_file_protocol { 473 u64 revision; 474 efi_status_t (__efiapi *open) (efi_file_protocol_t *, 475 efi_file_protocol_t **, 476 efi_char16_t *, u64, u64); 477 efi_status_t (__efiapi *close) (efi_file_protocol_t *); 478 efi_status_t (__efiapi *delete) (efi_file_protocol_t *); 479 efi_status_t (__efiapi *read) (efi_file_protocol_t *, 480 unsigned long *, void *); 481 efi_status_t (__efiapi *write) (efi_file_protocol_t *, 482 unsigned long, void *); 483 efi_status_t (__efiapi *get_position)(efi_file_protocol_t *, u64 *); 484 efi_status_t (__efiapi *set_position)(efi_file_protocol_t *, u64); 485 efi_status_t (__efiapi *get_info) (efi_file_protocol_t *, 486 efi_guid_t *, unsigned long *, 487 void *); 488 efi_status_t (__efiapi *set_info) (efi_file_protocol_t *, 489 efi_guid_t *, unsigned long, 490 void *); 491 efi_status_t (__efiapi *flush) (efi_file_protocol_t *); 492 }; 493 494 typedef struct efi_simple_file_system_protocol efi_simple_file_system_protocol_t; 495 496 struct efi_simple_file_system_protocol { 497 u64 revision; 498 int (__efiapi *open_volume)(efi_simple_file_system_protocol_t *, 499 efi_file_protocol_t **); 500 }; 501 502 #define EFI_FILE_MODE_READ 0x0000000000000001 503 #define EFI_FILE_MODE_WRITE 0x0000000000000002 504 #define EFI_FILE_MODE_CREATE 0x8000000000000000 505 506 typedef enum { 507 EfiPciIoWidthUint8, 508 EfiPciIoWidthUint16, 509 EfiPciIoWidthUint32, 510 EfiPciIoWidthUint64, 511 EfiPciIoWidthFifoUint8, 512 EfiPciIoWidthFifoUint16, 513 EfiPciIoWidthFifoUint32, 514 EfiPciIoWidthFifoUint64, 515 EfiPciIoWidthFillUint8, 516 EfiPciIoWidthFillUint16, 517 EfiPciIoWidthFillUint32, 518 EfiPciIoWidthFillUint64, 519 EfiPciIoWidthMaximum 520 } EFI_PCI_IO_PROTOCOL_WIDTH; 521 522 typedef enum { 523 EfiPciIoAttributeOperationGet, 524 EfiPciIoAttributeOperationSet, 525 EfiPciIoAttributeOperationEnable, 526 EfiPciIoAttributeOperationDisable, 527 EfiPciIoAttributeOperationSupported, 528 EfiPciIoAttributeOperationMaximum 529 } EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION; 530 531 typedef struct { 532 u32 read; 533 u32 write; 534 } efi_pci_io_protocol_access_32_t; 535 536 typedef union efi_pci_io_protocol efi_pci_io_protocol_t; 537 538 typedef 539 efi_status_t (__efiapi *efi_pci_io_protocol_cfg_t)(efi_pci_io_protocol_t *, 540 EFI_PCI_IO_PROTOCOL_WIDTH, 541 u32 offset, 542 unsigned long count, 543 void *buffer); 544 545 typedef struct { 546 void *read; 547 void *write; 548 } efi_pci_io_protocol_access_t; 549 550 typedef struct { 551 efi_pci_io_protocol_cfg_t read; 552 efi_pci_io_protocol_cfg_t write; 553 } efi_pci_io_protocol_config_access_t; 554 555 union efi_pci_io_protocol { 556 struct { 557 void *poll_mem; 558 void *poll_io; 559 efi_pci_io_protocol_access_t mem; 560 efi_pci_io_protocol_access_t io; 561 efi_pci_io_protocol_config_access_t pci; 562 void *copy_mem; 563 void *map; 564 void *unmap; 565 void *allocate_buffer; 566 void *free_buffer; 567 void *flush; 568 efi_status_t (__efiapi *get_location)(efi_pci_io_protocol_t *, 569 unsigned long *segment_nr, 570 unsigned long *bus_nr, 571 unsigned long *device_nr, 572 unsigned long *func_nr); 573 void *attributes; 574 void *get_bar_attributes; 575 void *set_bar_attributes; 576 uint64_t romsize; 577 void *romimage; 578 }; 579 struct { 580 u32 poll_mem; 581 u32 poll_io; 582 efi_pci_io_protocol_access_32_t mem; 583 efi_pci_io_protocol_access_32_t io; 584 efi_pci_io_protocol_access_32_t pci; 585 u32 copy_mem; 586 u32 map; 587 u32 unmap; 588 u32 allocate_buffer; 589 u32 free_buffer; 590 u32 flush; 591 u32 get_location; 592 u32 attributes; 593 u32 get_bar_attributes; 594 u32 set_bar_attributes; 595 u64 romsize; 596 u32 romimage; 597 } mixed_mode; 598 }; 599 600 #define EFI_PCI_IO_ATTRIBUTE_ISA_MOTHERBOARD_IO 0x0001 601 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO 0x0002 602 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO 0x0004 603 #define EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY 0x0008 604 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO 0x0010 605 #define EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO 0x0020 606 #define EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO 0x0040 607 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_WRITE_COMBINE 0x0080 608 #define EFI_PCI_IO_ATTRIBUTE_IO 0x0100 609 #define EFI_PCI_IO_ATTRIBUTE_MEMORY 0x0200 610 #define EFI_PCI_IO_ATTRIBUTE_BUS_MASTER 0x0400 611 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_CACHED 0x0800 612 #define EFI_PCI_IO_ATTRIBUTE_MEMORY_DISABLE 0x1000 613 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_DEVICE 0x2000 614 #define EFI_PCI_IO_ATTRIBUTE_EMBEDDED_ROM 0x4000 615 #define EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE 0x8000 616 #define EFI_PCI_IO_ATTRIBUTE_ISA_IO_16 0x10000 617 #define EFI_PCI_IO_ATTRIBUTE_VGA_PALETTE_IO_16 0x20000 618 #define EFI_PCI_IO_ATTRIBUTE_VGA_IO_16 0x40000 619 620 struct efi_dev_path; 621 622 typedef union apple_properties_protocol apple_properties_protocol_t; 623 624 union apple_properties_protocol { 625 struct { 626 unsigned long version; 627 efi_status_t (__efiapi *get)(apple_properties_protocol_t *, 628 struct efi_dev_path *, 629 efi_char16_t *, void *, u32 *); 630 efi_status_t (__efiapi *set)(apple_properties_protocol_t *, 631 struct efi_dev_path *, 632 efi_char16_t *, void *, u32); 633 efi_status_t (__efiapi *del)(apple_properties_protocol_t *, 634 struct efi_dev_path *, 635 efi_char16_t *); 636 efi_status_t (__efiapi *get_all)(apple_properties_protocol_t *, 637 void *buffer, u32 *); 638 }; 639 struct { 640 u32 version; 641 u32 get; 642 u32 set; 643 u32 del; 644 u32 get_all; 645 } mixed_mode; 646 }; 647 648 typedef u32 efi_tcg2_event_log_format; 649 650 typedef union efi_tcg2_protocol efi_tcg2_protocol_t; 651 652 union efi_tcg2_protocol { 653 struct { 654 void *get_capability; 655 efi_status_t (__efiapi *get_event_log)(efi_handle_t, 656 efi_tcg2_event_log_format, 657 efi_physical_addr_t *, 658 efi_physical_addr_t *, 659 efi_bool_t *); 660 void *hash_log_extend_event; 661 void *submit_command; 662 void *get_active_pcr_banks; 663 void *set_active_pcr_banks; 664 void *get_result_of_set_active_pcr_banks; 665 }; 666 struct { 667 u32 get_capability; 668 u32 get_event_log; 669 u32 hash_log_extend_event; 670 u32 submit_command; 671 u32 get_active_pcr_banks; 672 u32 set_active_pcr_banks; 673 u32 get_result_of_set_active_pcr_banks; 674 } mixed_mode; 675 }; 676 677 typedef union efi_load_file_protocol efi_load_file_protocol_t; 678 typedef union efi_load_file_protocol efi_load_file2_protocol_t; 679 680 union efi_load_file_protocol { 681 struct { 682 efi_status_t (__efiapi *load_file)(efi_load_file_protocol_t *, 683 efi_device_path_protocol_t *, 684 bool, unsigned long *, void *); 685 }; 686 struct { 687 u32 load_file; 688 } mixed_mode; 689 }; 690 691 void efi_pci_disable_bridge_busmaster(void); 692 693 typedef efi_status_t (*efi_exit_boot_map_processing)( 694 struct efi_boot_memmap *map, 695 void *priv); 696 697 efi_status_t efi_exit_boot_services(void *handle, 698 struct efi_boot_memmap *map, 699 void *priv, 700 efi_exit_boot_map_processing priv_func); 701 702 efi_status_t allocate_new_fdt_and_exit_boot(void *handle, 703 unsigned long *new_fdt_addr, 704 unsigned long max_addr, 705 u64 initrd_addr, u64 initrd_size, 706 char *cmdline_ptr, 707 unsigned long fdt_addr, 708 unsigned long fdt_size); 709 710 void *get_fdt(unsigned long *fdt_size); 711 712 void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, 713 unsigned long desc_size, efi_memory_desc_t *runtime_map, 714 int *count); 715 716 efi_status_t efi_get_random_bytes(unsigned long size, u8 *out); 717 718 efi_status_t efi_random_alloc(unsigned long size, unsigned long align, 719 unsigned long *addr, unsigned long random_seed); 720 721 efi_status_t check_platform_features(void); 722 723 void *get_efi_config_table(efi_guid_t guid); 724 725 /* NOTE: These functions do not print a trailing newline after the string */ 726 void efi_char16_puts(efi_char16_t *); 727 void efi_puts(const char *str); 728 729 __printf(1, 2) int efi_printk(char const *fmt, ...); 730 731 void efi_free(unsigned long size, unsigned long addr); 732 733 char *efi_convert_cmdline(efi_loaded_image_t *image, int *cmd_line_len); 734 735 efi_status_t efi_get_memory_map(struct efi_boot_memmap *map); 736 737 efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr, 738 unsigned long max); 739 740 efi_status_t efi_allocate_pages_aligned(unsigned long size, unsigned long *addr, 741 unsigned long max, unsigned long align); 742 743 efi_status_t efi_low_alloc_above(unsigned long size, unsigned long align, 744 unsigned long *addr, unsigned long min); 745 746 efi_status_t efi_relocate_kernel(unsigned long *image_addr, 747 unsigned long image_size, 748 unsigned long alloc_size, 749 unsigned long preferred_addr, 750 unsigned long alignment, 751 unsigned long min_addr); 752 753 efi_status_t efi_parse_options(char const *cmdline); 754 755 void efi_parse_option_graphics(char *option); 756 757 efi_status_t efi_setup_gop(struct screen_info *si, efi_guid_t *proto, 758 unsigned long size); 759 760 efi_status_t handle_cmdline_files(efi_loaded_image_t *image, 761 const efi_char16_t *optstr, 762 int optstr_size, 763 unsigned long soft_limit, 764 unsigned long hard_limit, 765 unsigned long *load_addr, 766 unsigned long *load_size); 767 768 769 static inline efi_status_t efi_load_dtb(efi_loaded_image_t *image, 770 unsigned long *load_addr, 771 unsigned long *load_size) 772 { 773 return handle_cmdline_files(image, L"dtb=", sizeof(L"dtb=") - 2, 774 ULONG_MAX, ULONG_MAX, load_addr, load_size); 775 } 776 777 efi_status_t efi_load_initrd(efi_loaded_image_t *image, 778 unsigned long *load_addr, 779 unsigned long *load_size, 780 unsigned long soft_limit, 781 unsigned long hard_limit); 782 /* 783 * This function handles the architcture specific differences between arm and 784 * arm64 regarding where the kernel image must be loaded and any memory that 785 * must be reserved. On failure it is required to free all 786 * all allocations it has made. 787 */ 788 efi_status_t handle_kernel_image(unsigned long *image_addr, 789 unsigned long *image_size, 790 unsigned long *reserve_addr, 791 unsigned long *reserve_size, 792 unsigned long dram_base, 793 efi_loaded_image_t *image); 794 795 asmlinkage void __noreturn efi_enter_kernel(unsigned long entrypoint, 796 unsigned long fdt_addr, 797 unsigned long fdt_size); 798 799 void efi_handle_post_ebs_state(void); 800 801 #endif 802