1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * EFI application loader 4 * 5 * Copyright (c) 2016 Alexander Graf 6 */ 7 8 #ifndef _EFI_LOADER_H 9 #define _EFI_LOADER_H 1 10 11 #include <common.h> 12 #include <part_efi.h> 13 #include <efi_api.h> 14 15 /* No need for efi loader support in SPL */ 16 #if CONFIG_IS_ENABLED(EFI_LOADER) 17 18 #include <linux/list.h> 19 20 /* Maximum number of configuration tables */ 21 #define EFI_MAX_CONFIGURATION_TABLES 16 22 23 /* GUID used by the root node */ 24 #define U_BOOT_GUID \ 25 EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \ 26 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b) 27 28 int __efi_entry_check(void); 29 int __efi_exit_check(void); 30 const char *__efi_nesting(void); 31 const char *__efi_nesting_inc(void); 32 const char *__efi_nesting_dec(void); 33 34 /* 35 * Enter the u-boot world from UEFI: 36 */ 37 #define EFI_ENTRY(format, ...) do { \ 38 assert(__efi_entry_check()); \ 39 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \ 40 __func__, ##__VA_ARGS__); \ 41 } while(0) 42 43 /* 44 * Exit the u-boot world back to UEFI: 45 */ 46 #define EFI_EXIT(ret) ({ \ 47 typeof(ret) _r = ret; \ 48 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \ 49 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \ 50 assert(__efi_exit_check()); \ 51 _r; \ 52 }) 53 54 /* 55 * Call non-void UEFI function from u-boot and retrieve return value: 56 */ 57 #define EFI_CALL(exp) ({ \ 58 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ 59 assert(__efi_exit_check()); \ 60 typeof(exp) _r = exp; \ 61 assert(__efi_entry_check()); \ 62 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \ 63 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \ 64 _r; \ 65 }) 66 67 /* 68 * Call void UEFI function from u-boot: 69 */ 70 #define EFI_CALL_VOID(exp) do { \ 71 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ 72 assert(__efi_exit_check()); \ 73 exp; \ 74 assert(__efi_entry_check()); \ 75 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ 76 } while(0) 77 78 /* 79 * Write an indented message with EFI prefix 80 */ 81 #define EFI_PRINT(format, ...) ({ \ 82 debug("%sEFI: " format, __efi_nesting(), \ 83 ##__VA_ARGS__); \ 84 }) 85 86 #ifdef CONFIG_SYS_CACHELINE_SIZE 87 #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE 88 #else 89 /* Just use the greatest cache flush alignment requirement I'm aware of */ 90 #define EFI_CACHELINE_SIZE 128 91 #endif 92 93 /* Key identifying current memory map */ 94 extern efi_uintn_t efi_memory_map_key; 95 96 extern struct efi_runtime_services efi_runtime_services; 97 extern struct efi_system_table systab; 98 99 extern struct efi_simple_text_output_protocol efi_con_out; 100 extern struct efi_simple_text_input_protocol efi_con_in; 101 extern struct efi_console_control_protocol efi_console_control; 102 extern const struct efi_device_path_to_text_protocol efi_device_path_to_text; 103 /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */ 104 extern const struct efi_device_path_utilities_protocol 105 efi_device_path_utilities; 106 /* Implementation of the EFI_UNICODE_COLLATION_PROTOCOL */ 107 extern const struct efi_unicode_collation_protocol 108 efi_unicode_collation_protocol; 109 extern const struct efi_hii_config_routing_protocol efi_hii_config_routing; 110 extern const struct efi_hii_config_access_protocol efi_hii_config_access; 111 extern const struct efi_hii_database_protocol efi_hii_database; 112 extern const struct efi_hii_string_protocol efi_hii_string; 113 114 uint16_t *efi_dp_str(struct efi_device_path *dp); 115 116 /* GUID of the U-Boot root node */ 117 extern const efi_guid_t efi_u_boot_guid; 118 /* GUID of the EFI_BLOCK_IO_PROTOCOL */ 119 extern const efi_guid_t efi_block_io_guid; 120 extern const efi_guid_t efi_global_variable_guid; 121 extern const efi_guid_t efi_guid_console_control; 122 extern const efi_guid_t efi_guid_device_path; 123 /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */ 124 extern const efi_guid_t efi_guid_driver_binding_protocol; 125 /* event group ExitBootServices() invoked */ 126 extern const efi_guid_t efi_guid_event_group_exit_boot_services; 127 /* event group SetVirtualAddressMap() invoked */ 128 extern const efi_guid_t efi_guid_event_group_virtual_address_change; 129 /* event group memory map changed */ 130 extern const efi_guid_t efi_guid_event_group_memory_map_change; 131 /* event group boot manager about to boot */ 132 extern const efi_guid_t efi_guid_event_group_ready_to_boot; 133 /* event group ResetSystem() invoked (before ExitBootServices) */ 134 extern const efi_guid_t efi_guid_event_group_reset_system; 135 /* GUID of the device tree table */ 136 extern const efi_guid_t efi_guid_fdt; 137 extern const efi_guid_t efi_guid_loaded_image; 138 extern const efi_guid_t efi_guid_device_path_to_text_protocol; 139 extern const efi_guid_t efi_simple_file_system_protocol_guid; 140 extern const efi_guid_t efi_file_info_guid; 141 /* GUID for file system information */ 142 extern const efi_guid_t efi_file_system_info_guid; 143 extern const efi_guid_t efi_guid_device_path_utilities_protocol; 144 /* GUID of the Unicode collation protocol */ 145 extern const efi_guid_t efi_guid_unicode_collation_protocol; 146 extern const efi_guid_t efi_guid_hii_config_routing_protocol; 147 extern const efi_guid_t efi_guid_hii_config_access_protocol; 148 extern const efi_guid_t efi_guid_hii_database_protocol; 149 extern const efi_guid_t efi_guid_hii_string_protocol; 150 151 extern unsigned int __efi_runtime_start, __efi_runtime_stop; 152 extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; 153 154 /* 155 * When a protocol is opened a open protocol info entry is created. 156 * These are maintained in a list. 157 */ 158 struct efi_open_protocol_info_item { 159 /* Link to the list of open protocol info entries of a protocol */ 160 struct list_head link; 161 struct efi_open_protocol_info_entry info; 162 }; 163 164 /* 165 * When the UEFI payload wants to open a protocol on an object to get its 166 * interface (usually a struct with callback functions), this struct maps the 167 * protocol GUID to the respective protocol interface 168 */ 169 struct efi_handler { 170 /* Link to the list of protocols of a handle */ 171 struct list_head link; 172 const efi_guid_t *guid; 173 void *protocol_interface; 174 /* Link to the list of open protocol info items */ 175 struct list_head open_infos; 176 }; 177 178 /** 179 * struct efi_object - dereferenced EFI handle 180 * 181 * @link: pointers to put the handle into a linked list 182 * @protocols: linked list with the protocol interfaces installed on this 183 * handle 184 * 185 * UEFI offers a flexible and expandable object model. The objects in the UEFI 186 * API are devices, drivers, and loaded images. struct efi_object is our storage 187 * structure for these objects. 188 * 189 * When including this structure into a larger structure always put it first so 190 * that when deleting a handle the whole encompassing structure can be freed. 191 * 192 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t 193 * has been created for such pointers. 194 */ 195 struct efi_object { 196 /* Every UEFI object is part of a global object list */ 197 struct list_head link; 198 /* The list of protocols */ 199 struct list_head protocols; 200 }; 201 202 /** 203 * struct efi_loaded_image_obj - handle of a loaded image 204 * 205 * @header: EFI object header 206 * @reloc_base: base address for the relocated image 207 * @reloc_size: size of the relocated image 208 * @exit_jmp: long jump buffer for returning form started image 209 * @entry: entry address of the relocated image 210 */ 211 struct efi_loaded_image_obj { 212 struct efi_object header; 213 void *reloc_base; 214 aligned_u64 reloc_size; 215 efi_status_t exit_status; 216 struct jmp_buf_data exit_jmp; 217 EFIAPI efi_status_t (*entry)(efi_handle_t image_handle, 218 struct efi_system_table *st); 219 }; 220 221 /** 222 * struct efi_event 223 * 224 * @link: Link to list of all events 225 * @type: Type of event, see efi_create_event 226 * @notify_tpl: Task priority level of notifications 227 * @nofify_function: Function to call when the event is triggered 228 * @notify_context: Data to be passed to the notify function 229 * @group: Event group 230 * @trigger_time: Period of the timer 231 * @trigger_next: Next time to trigger the timer 232 * @trigger_type: Type of timer, see efi_set_timer 233 * @is_queued: The notification function is queued 234 * @is_signaled: The event occurred. The event is in the signaled state. 235 */ 236 struct efi_event { 237 struct list_head link; 238 uint32_t type; 239 efi_uintn_t notify_tpl; 240 void (EFIAPI *notify_function)(struct efi_event *event, void *context); 241 void *notify_context; 242 const efi_guid_t *group; 243 u64 trigger_next; 244 u64 trigger_time; 245 enum efi_timer_delay trigger_type; 246 bool is_queued; 247 bool is_signaled; 248 }; 249 250 /* This list contains all UEFI objects we know of */ 251 extern struct list_head efi_obj_list; 252 /* List of all events */ 253 extern struct list_head efi_events; 254 255 /* Initialize efi execution environment */ 256 efi_status_t efi_init_obj_list(void); 257 /* Called by bootefi to initialize root node */ 258 efi_status_t efi_root_node_register(void); 259 /* Called by bootefi to initialize runtime */ 260 efi_status_t efi_initialize_system_table(void); 261 /* Called by bootefi to make console interface available */ 262 efi_status_t efi_console_register(void); 263 /* Called by bootefi to make all disk storage accessible as EFI objects */ 264 efi_status_t efi_disk_register(void); 265 /* Create handles and protocols for the partitions of a block device */ 266 int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc, 267 const char *if_typename, int diskid, 268 const char *pdevname); 269 /* Called by bootefi to make GOP (graphical) interface available */ 270 efi_status_t efi_gop_register(void); 271 /* Called by bootefi to make the network interface available */ 272 efi_status_t efi_net_register(void); 273 /* Called by bootefi to make the watchdog available */ 274 efi_status_t efi_watchdog_register(void); 275 /* Called by bootefi to make SMBIOS tables available */ 276 /** 277 * efi_acpi_register() - write out ACPI tables 278 * 279 * Called by bootefi to make ACPI tables available 280 * 281 * @return 0 if OK, -ENOMEM if no memory is available for the tables 282 */ 283 efi_status_t efi_acpi_register(void); 284 /** 285 * efi_smbios_register() - write out SMBIOS tables 286 * 287 * Called by bootefi to make SMBIOS tables available 288 * 289 * @return 0 if OK, -ENOMEM if no memory is available for the tables 290 */ 291 efi_status_t efi_smbios_register(void); 292 293 struct efi_simple_file_system_protocol * 294 efi_fs_from_path(struct efi_device_path *fp); 295 296 /* Called by networking code to memorize the dhcp ack package */ 297 void efi_net_set_dhcp_ack(void *pkt, int len); 298 /* Called by efi_set_watchdog_timer to reset the timer */ 299 efi_status_t efi_set_watchdog(unsigned long timeout); 300 301 /* Called from places to check whether a timer expired */ 302 void efi_timer_check(void); 303 /* PE loader implementation */ 304 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi, 305 struct efi_loaded_image *loaded_image_info); 306 /* Called once to store the pristine gd pointer */ 307 void efi_save_gd(void); 308 /* Special case handler for error/abort that just tries to dtrt to get 309 * back to u-boot world */ 310 void efi_restore_gd(void); 311 /* Call this to relocate the runtime section to an address space */ 312 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map); 313 /* Call this to set the current device name */ 314 void efi_set_bootdev(const char *dev, const char *devnr, const char *path); 315 /* Add a new object to the object list. */ 316 void efi_add_handle(efi_handle_t obj); 317 /* Create handle */ 318 efi_status_t efi_create_handle(efi_handle_t *handle); 319 /* Delete handle */ 320 void efi_delete_handle(efi_handle_t obj); 321 /* Call this to validate a handle and find the EFI object for it */ 322 struct efi_object *efi_search_obj(const efi_handle_t handle); 323 /* Start image */ 324 efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, 325 efi_uintn_t *exit_data_size, 326 u16 **exit_data); 327 /* Find a protocol on a handle */ 328 efi_status_t efi_search_protocol(const efi_handle_t handle, 329 const efi_guid_t *protocol_guid, 330 struct efi_handler **handler); 331 /* Install new protocol on a handle */ 332 efi_status_t efi_add_protocol(const efi_handle_t handle, 333 const efi_guid_t *protocol, 334 void *protocol_interface); 335 /* Delete protocol from a handle */ 336 efi_status_t efi_remove_protocol(const efi_handle_t handle, 337 const efi_guid_t *protocol, 338 void *protocol_interface); 339 /* Delete all protocols from a handle */ 340 efi_status_t efi_remove_all_protocols(const efi_handle_t handle); 341 /* Call this to create an event */ 342 efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, 343 void (EFIAPI *notify_function) ( 344 struct efi_event *event, 345 void *context), 346 void *notify_context, efi_guid_t *group, 347 struct efi_event **event); 348 /* Call this to set a timer */ 349 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, 350 uint64_t trigger_time); 351 /* Call this to signal an event */ 352 void efi_signal_event(struct efi_event *event, bool check_tpl); 353 354 /* open file system: */ 355 struct efi_simple_file_system_protocol *efi_simple_file_system( 356 struct blk_desc *desc, int part, struct efi_device_path *dp); 357 358 /* open file from device-path: */ 359 struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); 360 361 /** 362 * efi_size_in_pages() - convert size in bytes to size in pages 363 * 364 * This macro returns the number of EFI memory pages required to hold 'size' 365 * bytes. 366 * 367 * @size: size in bytes 368 * Return: size in pages 369 */ 370 #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT) 371 /* Generic EFI memory allocator, call this to get memory */ 372 void *efi_alloc(uint64_t len, int memory_type); 373 /* More specific EFI memory allocator, called by EFI payloads */ 374 efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages, 375 uint64_t *memory); 376 /* EFI memory free function. */ 377 efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages); 378 /* EFI memory allocator for small allocations */ 379 efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size, 380 void **buffer); 381 /* EFI pool memory free function. */ 382 efi_status_t efi_free_pool(void *buffer); 383 /* Returns the EFI memory map */ 384 efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, 385 struct efi_mem_desc *memory_map, 386 efi_uintn_t *map_key, 387 efi_uintn_t *descriptor_size, 388 uint32_t *descriptor_version); 389 /* Adds a range into the EFI memory map */ 390 uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type, 391 bool overlap_only_ram); 392 /* Called by board init to initialize the EFI drivers */ 393 efi_status_t efi_driver_init(void); 394 /* Called by board init to initialize the EFI memory map */ 395 int efi_memory_init(void); 396 /* Adds new or overrides configuration table entry to the system table */ 397 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table); 398 /* Sets up a loaded image */ 399 efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path, 400 struct efi_device_path *file_path, 401 struct efi_loaded_image_obj **handle_ptr, 402 struct efi_loaded_image **info_ptr); 403 efi_status_t efi_load_image_from_path(struct efi_device_path *file_path, 404 void **buffer, efi_uintn_t *size); 405 /* Print information about all loaded images */ 406 void efi_print_image_infos(void *pc); 407 408 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER 409 extern void *efi_bounce_buffer; 410 #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024) 411 #endif 412 413 414 struct efi_device_path *efi_dp_next(const struct efi_device_path *dp); 415 int efi_dp_match(const struct efi_device_path *a, 416 const struct efi_device_path *b); 417 struct efi_object *efi_dp_find_obj(struct efi_device_path *dp, 418 struct efi_device_path **rem); 419 /* get size of the first device path instance excluding end node */ 420 efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp); 421 /* size of multi-instance device path excluding end node */ 422 efi_uintn_t efi_dp_size(const struct efi_device_path *dp); 423 struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp); 424 struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1, 425 const struct efi_device_path *dp2); 426 struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp, 427 const struct efi_device_path *node); 428 /* Create a device path node of given type, sub-type, length */ 429 struct efi_device_path *efi_dp_create_device_node(const u8 type, 430 const u8 sub_type, 431 const u16 length); 432 /* Append device path instance */ 433 struct efi_device_path *efi_dp_append_instance( 434 const struct efi_device_path *dp, 435 const struct efi_device_path *dpi); 436 /* Get next device path instance */ 437 struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp, 438 efi_uintn_t *size); 439 /* Check if a device path contains muliple instances */ 440 bool efi_dp_is_multi_instance(const struct efi_device_path *dp); 441 442 struct efi_device_path *efi_dp_from_dev(struct udevice *dev); 443 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part); 444 /* Create a device node for a block device partition. */ 445 struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part); 446 struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part, 447 const char *path); 448 struct efi_device_path *efi_dp_from_eth(void); 449 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type, 450 uint64_t start_address, 451 uint64_t end_address); 452 /* Determine the last device path node that is not the end node. */ 453 const struct efi_device_path *efi_dp_last_node( 454 const struct efi_device_path *dp); 455 efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path, 456 struct efi_device_path **device_path, 457 struct efi_device_path **file_path); 458 efi_status_t efi_dp_from_name(const char *dev, const char *devnr, 459 const char *path, 460 struct efi_device_path **device, 461 struct efi_device_path **file); 462 463 #define EFI_DP_TYPE(_dp, _type, _subtype) \ 464 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \ 465 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype)) 466 467 /** 468 * ascii2unicode() - convert ASCII string to UTF-16 string 469 * 470 * A zero terminated ASCII string is converted to a zero terminated UTF-16 471 * string. The output buffer must be preassigned. 472 * 473 * @unicode: preassigned output buffer for UTF-16 string 474 * @ascii: ASCII string to be converted 475 */ 476 static inline void ascii2unicode(u16 *unicode, const char *ascii) 477 { 478 while (*ascii) 479 *(unicode++) = *(ascii++); 480 *unicode = 0; 481 } 482 483 static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) 484 { 485 return memcmp(g1, g2, sizeof(efi_guid_t)); 486 } 487 488 /* 489 * Use these to indicate that your code / data should go into the EFI runtime 490 * section and thus still be available when the OS is running 491 */ 492 #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime"))) 493 #define __efi_runtime __attribute__ ((section (".text.efi_runtime"))) 494 495 /* Update CRC32 in table header */ 496 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table); 497 498 /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region 499 * to make it available at runtime */ 500 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len); 501 502 /* Boards may provide the functions below to implement RTS functionality */ 503 504 void __efi_runtime EFIAPI efi_reset_system( 505 enum efi_reset_type reset_type, 506 efi_status_t reset_status, 507 unsigned long data_size, void *reset_data); 508 509 /* Architecture specific initialization of the EFI subsystem */ 510 efi_status_t efi_reset_system_init(void); 511 512 efi_status_t __efi_runtime EFIAPI efi_get_time( 513 struct efi_time *time, 514 struct efi_time_cap *capabilities); 515 516 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST 517 /* 518 * Entry point for the tests of the EFI API. 519 * It is called by 'bootefi selftest' 520 */ 521 efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle, 522 struct efi_system_table *systab); 523 #endif 524 525 efi_status_t EFIAPI efi_get_variable(u16 *variable_name, 526 const efi_guid_t *vendor, u32 *attributes, 527 efi_uintn_t *data_size, void *data); 528 efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size, 529 u16 *variable_name, 530 const efi_guid_t *vendor); 531 efi_status_t EFIAPI efi_set_variable(u16 *variable_name, 532 const efi_guid_t *vendor, u32 attributes, 533 efi_uintn_t data_size, const void *data); 534 535 /* 536 * See section 3.1.3 in the v2.7 UEFI spec for more details on 537 * the layout of EFI_LOAD_OPTION. In short it is: 538 * 539 * typedef struct _EFI_LOAD_OPTION { 540 * UINT32 Attributes; 541 * UINT16 FilePathListLength; 542 * // CHAR16 Description[]; <-- variable length, NULL terminated 543 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[]; 544 * <-- FilePathListLength bytes 545 * // UINT8 OptionalData[]; 546 * } EFI_LOAD_OPTION; 547 */ 548 struct efi_load_option { 549 u32 attributes; 550 u16 file_path_length; 551 u16 *label; 552 struct efi_device_path *file_path; 553 u8 *optional_data; 554 }; 555 556 void efi_deserialize_load_option(struct efi_load_option *lo, u8 *data); 557 unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data); 558 void *efi_bootmgr_load(struct efi_device_path **device_path, 559 struct efi_device_path **file_path); 560 561 #else /* CONFIG_IS_ENABLED(EFI_LOADER) */ 562 563 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */ 564 #define __efi_runtime_data 565 #define __efi_runtime 566 static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len) 567 { 568 return EFI_SUCCESS; 569 } 570 571 /* No loader configured, stub out EFI_ENTRY */ 572 static inline void efi_restore_gd(void) { } 573 static inline void efi_set_bootdev(const char *dev, const char *devnr, 574 const char *path) { } 575 static inline void efi_net_set_dhcp_ack(void *pkt, int len) { } 576 static inline void efi_print_image_infos(void *pc) { } 577 578 #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */ 579 580 #endif /* _EFI_LOADER_H */ 581