1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * EFI application loader
5 * Copyright (c) 2016 Alexander Graf
9 #define _EFI_LOADER_H 1
15 /* No need for efi loader support in SPL */
16 #if CONFIG_IS_ENABLED(EFI_LOADER)
18 #include <linux/list.h>
20 /* Maximum number of configuration tables */
21 #define EFI_MAX_CONFIGURATION_TABLES 16
23 /* GUID used by the root node */
25 EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \
26 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b)
27 /* GUID used as host device on sandbox */
28 #define U_BOOT_HOST_DEV_GUID \
29 EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \
30 0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82)
33 extern efi_handle_t efi_root;
35 int __efi_entry_check(void);
36 int __efi_exit_check(void);
37 const char *__efi_nesting(void);
38 const char *__efi_nesting_inc(void);
39 const char *__efi_nesting_dec(void);
42 * Enter the u-boot world from UEFI:
44 #define EFI_ENTRY(format, ...) do { \
45 assert(__efi_entry_check()); \
46 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
47 __func__, ##__VA_ARGS__); \
51 * Exit the u-boot world back to UEFI:
53 #define EFI_EXIT(ret) ({ \
54 typeof(ret) _r = ret; \
55 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
56 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \
57 assert(__efi_exit_check()); \
62 * Call non-void UEFI function from u-boot and retrieve return value:
64 #define EFI_CALL(exp) ({ \
65 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
66 assert(__efi_exit_check()); \
67 typeof(exp) _r = exp; \
68 assert(__efi_entry_check()); \
69 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \
70 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \
75 * Call void UEFI function from u-boot:
77 #define EFI_CALL_VOID(exp) do { \
78 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
79 assert(__efi_exit_check()); \
81 assert(__efi_entry_check()); \
82 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
86 * Write an indented message with EFI prefix
88 #define EFI_PRINT(format, ...) ({ \
89 debug("%sEFI: " format, __efi_nesting(), \
93 #ifdef CONFIG_SYS_CACHELINE_SIZE
94 #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
96 /* Just use the greatest cache flush alignment requirement I'm aware of */
97 #define EFI_CACHELINE_SIZE 128
100 /* Key identifying current memory map */
101 extern efi_uintn_t efi_memory_map_key;
103 extern struct efi_runtime_services efi_runtime_services;
104 extern struct efi_system_table systab;
106 extern struct efi_simple_text_output_protocol efi_con_out;
107 extern struct efi_simple_text_input_protocol efi_con_in;
108 extern struct efi_console_control_protocol efi_console_control;
109 extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
110 /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
111 extern const struct efi_device_path_utilities_protocol
112 efi_device_path_utilities;
113 /* deprecated version of the EFI_UNICODE_COLLATION_PROTOCOL */
114 extern const struct efi_unicode_collation_protocol
115 efi_unicode_collation_protocol;
116 /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */
117 extern const struct efi_unicode_collation_protocol
118 efi_unicode_collation_protocol2;
119 extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
120 extern const struct efi_hii_config_access_protocol efi_hii_config_access;
121 extern const struct efi_hii_database_protocol efi_hii_database;
122 extern const struct efi_hii_string_protocol efi_hii_string;
124 uint16_t *efi_dp_str(struct efi_device_path *dp);
126 /* GUID of the U-Boot root node */
127 extern const efi_guid_t efi_u_boot_guid;
128 #ifdef CONFIG_SANDBOX
129 /* GUID of U-Boot host device on sandbox */
130 extern const efi_guid_t efi_guid_host_dev;
132 /* GUID of the EFI_BLOCK_IO_PROTOCOL */
133 extern const efi_guid_t efi_block_io_guid;
134 extern const efi_guid_t efi_global_variable_guid;
135 extern const efi_guid_t efi_guid_console_control;
136 extern const efi_guid_t efi_guid_device_path;
137 /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
138 extern const efi_guid_t efi_guid_driver_binding_protocol;
139 /* event group ExitBootServices() invoked */
140 extern const efi_guid_t efi_guid_event_group_exit_boot_services;
141 /* event group SetVirtualAddressMap() invoked */
142 extern const efi_guid_t efi_guid_event_group_virtual_address_change;
143 /* event group memory map changed */
144 extern const efi_guid_t efi_guid_event_group_memory_map_change;
145 /* event group boot manager about to boot */
146 extern const efi_guid_t efi_guid_event_group_ready_to_boot;
147 /* event group ResetSystem() invoked (before ExitBootServices) */
148 extern const efi_guid_t efi_guid_event_group_reset_system;
149 /* GUID of the device tree table */
150 extern const efi_guid_t efi_guid_fdt;
151 extern const efi_guid_t efi_guid_loaded_image;
152 extern const efi_guid_t efi_guid_loaded_image_device_path;
153 extern const efi_guid_t efi_guid_device_path_to_text_protocol;
154 extern const efi_guid_t efi_simple_file_system_protocol_guid;
155 extern const efi_guid_t efi_file_info_guid;
156 /* GUID for file system information */
157 extern const efi_guid_t efi_file_system_info_guid;
158 extern const efi_guid_t efi_guid_device_path_utilities_protocol;
159 /* GUID of the deprecated Unicode collation protocol */
160 extern const efi_guid_t efi_guid_unicode_collation_protocol;
161 /* GUID of the Unicode collation protocol */
162 extern const efi_guid_t efi_guid_unicode_collation_protocol2;
163 extern const efi_guid_t efi_guid_hii_config_routing_protocol;
164 extern const efi_guid_t efi_guid_hii_config_access_protocol;
165 extern const efi_guid_t efi_guid_hii_database_protocol;
166 extern const efi_guid_t efi_guid_hii_string_protocol;
168 extern unsigned int __efi_runtime_start, __efi_runtime_stop;
169 extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
172 * struct efi_open_protocol_info_item - open protocol info item
174 * When a protocol is opened a open protocol info entry is created.
175 * These are maintained in a list.
177 * @link: link to the list of open protocol info entries of a protocol
178 * @info: information about the opening of a protocol
180 struct efi_open_protocol_info_item {
181 struct list_head link;
182 struct efi_open_protocol_info_entry info;
186 * struct efi_handler - single protocol interface of a handle
188 * When the UEFI payload wants to open a protocol on an object to get its
189 * interface (usually a struct with callback functions), this struct maps the
190 * protocol GUID to the respective protocol interface
192 * @link: link to the list of protocols of a handle
193 * @guid: GUID of the protocol
194 * @protocol_interface: protocol interface
195 * @open_infos link to the list of open protocol info items
198 struct list_head link;
199 const efi_guid_t *guid;
200 void *protocol_interface;
201 struct list_head open_infos;
205 * enum efi_object_type - type of EFI object
207 * In UnloadImage we must be able to identify if the handle relates to a
210 enum efi_object_type {
211 EFI_OBJECT_TYPE_UNDEFINED = 0,
212 EFI_OBJECT_TYPE_U_BOOT_FIRMWARE,
213 EFI_OBJECT_TYPE_LOADED_IMAGE,
214 EFI_OBJECT_TYPE_STARTED_IMAGE,
218 * struct efi_object - dereferenced EFI handle
220 * @link: pointers to put the handle into a linked list
221 * @protocols: linked list with the protocol interfaces installed on this
224 * UEFI offers a flexible and expandable object model. The objects in the UEFI
225 * API are devices, drivers, and loaded images. struct efi_object is our storage
226 * structure for these objects.
228 * When including this structure into a larger structure always put it first so
229 * that when deleting a handle the whole encompassing structure can be freed.
231 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
232 * has been created for such pointers.
235 /* Every UEFI object is part of a global object list */
236 struct list_head link;
237 /* The list of protocols */
238 struct list_head protocols;
239 enum efi_object_type type;
243 * struct efi_loaded_image_obj - handle of a loaded image
245 * @header: EFI object header
246 * @exit_status: exit status passed to Exit()
247 * @exit_data_size: exit data size passed to Exit()
248 * @exit_data: exit data passed to Exit()
249 * @exit_jmp: long jump buffer for returning form started image
250 * @entry: entry address of the relocated image
252 struct efi_loaded_image_obj {
253 struct efi_object header;
254 efi_status_t exit_status;
255 efi_uintn_t *exit_data_size;
257 struct jmp_buf_data exit_jmp;
258 EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
259 struct efi_system_table *st);
266 * @link: Link to list of all events
267 * @queue_link: Link to the list of queued events
268 * @type: Type of event, see efi_create_event
269 * @notify_tpl: Task priority level of notifications
270 * @nofify_function: Function to call when the event is triggered
271 * @notify_context: Data to be passed to the notify function
272 * @group: Event group
273 * @trigger_time: Period of the timer
274 * @trigger_next: Next time to trigger the timer
275 * @trigger_type: Type of timer, see efi_set_timer
276 * @is_signaled: The event occurred. The event is in the signaled state.
279 struct list_head link;
280 struct list_head queue_link;
282 efi_uintn_t notify_tpl;
283 void (EFIAPI *notify_function)(struct efi_event *event, void *context);
284 void *notify_context;
285 const efi_guid_t *group;
288 enum efi_timer_delay trigger_type;
292 /* This list contains all UEFI objects we know of */
293 extern struct list_head efi_obj_list;
294 /* List of all events */
295 extern struct list_head efi_events;
298 * struct efi_protocol_notification - handle for notified protocol
300 * When a protocol interface is installed for which an event was registered with
301 * the RegisterProtocolNotify() service this structure is used to hold the
302 * handle on which the protocol interface was installed.
304 * @link: link to list of all handles notified for this event
305 * @handle: handle on which the notified protocol interface was installed
307 struct efi_protocol_notification {
308 struct list_head link;
313 * efi_register_notify_event - event registered by RegisterProtocolNotify()
315 * The address of this structure serves as registration value.
317 * @link: link to list of all registered events
318 * @event: registered event. The same event may registered for multiple
320 * @protocol: protocol for which the event is registered
321 * @handles: linked list of all handles on which the notified protocol was
324 struct efi_register_notify_event {
325 struct list_head link;
326 struct efi_event *event;
328 struct list_head handles;
331 /* List of all events registered by RegisterProtocolNotify() */
332 extern struct list_head efi_register_notify_events;
334 /* Initialize efi execution environment */
335 efi_status_t efi_init_obj_list(void);
336 /* Initialize variable services */
337 efi_status_t efi_init_variables(void);
338 /* Notify ExitBootServices() is called */
339 void efi_variables_boot_exit_notify(void);
340 /* Called by bootefi to initialize root node */
341 efi_status_t efi_root_node_register(void);
342 /* Called by bootefi to initialize runtime */
343 efi_status_t efi_initialize_system_table(void);
344 /* efi_runtime_detach() - detach unimplemented runtime functions */
345 void efi_runtime_detach(void);
346 /* Called by bootefi to make console interface available */
347 efi_status_t efi_console_register(void);
348 /* Called by bootefi to make all disk storage accessible as EFI objects */
349 efi_status_t efi_disk_register(void);
350 /* Create handles and protocols for the partitions of a block device */
351 int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
352 const char *if_typename, int diskid,
353 const char *pdevname);
354 /* Called by bootefi to make GOP (graphical) interface available */
355 efi_status_t efi_gop_register(void);
356 /* Called by bootefi to make the network interface available */
357 efi_status_t efi_net_register(void);
358 /* Called by bootefi to make the watchdog available */
359 efi_status_t efi_watchdog_register(void);
360 /* Called by bootefi to make SMBIOS tables available */
362 * efi_acpi_register() - write out ACPI tables
364 * Called by bootefi to make ACPI tables available
366 * @return 0 if OK, -ENOMEM if no memory is available for the tables
368 efi_status_t efi_acpi_register(void);
370 * efi_smbios_register() - write out SMBIOS tables
372 * Called by bootefi to make SMBIOS tables available
374 * @return 0 if OK, -ENOMEM if no memory is available for the tables
376 efi_status_t efi_smbios_register(void);
378 struct efi_simple_file_system_protocol *
379 efi_fs_from_path(struct efi_device_path *fp);
381 /* Called by networking code to memorize the dhcp ack package */
382 void efi_net_set_dhcp_ack(void *pkt, int len);
383 /* Called by efi_set_watchdog_timer to reset the timer */
384 efi_status_t efi_set_watchdog(unsigned long timeout);
386 /* Called from places to check whether a timer expired */
387 void efi_timer_check(void);
388 /* PE loader implementation */
389 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi,
390 struct efi_loaded_image *loaded_image_info);
391 /* Called once to store the pristine gd pointer */
392 void efi_save_gd(void);
393 /* Special case handler for error/abort that just tries to dtrt to get
394 * back to u-boot world */
395 void efi_restore_gd(void);
396 /* Call this to relocate the runtime section to an address space */
397 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
398 /* Call this to set the current device name */
399 void efi_set_bootdev(const char *dev, const char *devnr, const char *path);
400 /* Add a new object to the object list. */
401 void efi_add_handle(efi_handle_t obj);
403 efi_status_t efi_create_handle(efi_handle_t *handle);
405 void efi_delete_handle(efi_handle_t obj);
406 /* Call this to validate a handle and find the EFI object for it */
407 struct efi_object *efi_search_obj(const efi_handle_t handle);
409 efi_status_t EFIAPI efi_load_image(bool boot_policy,
410 efi_handle_t parent_image,
411 struct efi_device_path *file_path,
413 efi_uintn_t source_size,
414 efi_handle_t *image_handle);
416 efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
417 efi_uintn_t *exit_data_size,
420 efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle);
421 /* Find a protocol on a handle */
422 efi_status_t efi_search_protocol(const efi_handle_t handle,
423 const efi_guid_t *protocol_guid,
424 struct efi_handler **handler);
425 /* Install new protocol on a handle */
426 efi_status_t efi_add_protocol(const efi_handle_t handle,
427 const efi_guid_t *protocol,
428 void *protocol_interface);
429 /* Delete protocol from a handle */
430 efi_status_t efi_remove_protocol(const efi_handle_t handle,
431 const efi_guid_t *protocol,
432 void *protocol_interface);
433 /* Delete all protocols from a handle */
434 efi_status_t efi_remove_all_protocols(const efi_handle_t handle);
435 /* Install multiple protocol interfaces */
436 efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
437 (efi_handle_t *handle, ...);
438 /* Call this to create an event */
439 efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
440 void (EFIAPI *notify_function) (
441 struct efi_event *event,
443 void *notify_context, efi_guid_t *group,
444 struct efi_event **event);
445 /* Call this to set a timer */
446 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
447 uint64_t trigger_time);
448 /* Call this to signal an event */
449 void efi_signal_event(struct efi_event *event);
451 /* open file system: */
452 struct efi_simple_file_system_protocol *efi_simple_file_system(
453 struct blk_desc *desc, int part, struct efi_device_path *dp);
455 /* open file from device-path: */
456 struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp);
459 * efi_size_in_pages() - convert size in bytes to size in pages
461 * This macro returns the number of EFI memory pages required to hold 'size'
464 * @size: size in bytes
465 * Return: size in pages
467 #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
468 /* Generic EFI memory allocator, call this to get memory */
469 void *efi_alloc(uint64_t len, int memory_type);
470 /* More specific EFI memory allocator, called by EFI payloads */
471 efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages,
473 /* EFI memory free function. */
474 efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages);
475 /* EFI memory allocator for small allocations */
476 efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size,
478 /* EFI pool memory free function. */
479 efi_status_t efi_free_pool(void *buffer);
480 /* Returns the EFI memory map */
481 efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
482 struct efi_mem_desc *memory_map,
483 efi_uintn_t *map_key,
484 efi_uintn_t *descriptor_size,
485 uint32_t *descriptor_version);
486 /* Adds a range into the EFI memory map */
487 efi_status_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
488 bool overlap_only_ram);
489 /* Adds a conventional range into the EFI memory map */
490 efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end,
493 /* Called by board init to initialize the EFI drivers */
494 efi_status_t efi_driver_init(void);
495 /* Called by board init to initialize the EFI memory map */
496 int efi_memory_init(void);
497 /* Adds new or overrides configuration table entry to the system table */
498 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table);
499 /* Sets up a loaded image */
500 efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
501 struct efi_device_path *file_path,
502 struct efi_loaded_image_obj **handle_ptr,
503 struct efi_loaded_image **info_ptr);
504 /* Print information about all loaded images */
505 void efi_print_image_infos(void *pc);
507 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
508 extern void *efi_bounce_buffer;
509 #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024)
513 struct efi_device_path *efi_dp_next(const struct efi_device_path *dp);
514 int efi_dp_match(const struct efi_device_path *a,
515 const struct efi_device_path *b);
516 struct efi_object *efi_dp_find_obj(struct efi_device_path *dp,
517 struct efi_device_path **rem);
518 /* get size of the first device path instance excluding end node */
519 efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp);
520 /* size of multi-instance device path excluding end node */
521 efi_uintn_t efi_dp_size(const struct efi_device_path *dp);
522 struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp);
523 struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1,
524 const struct efi_device_path *dp2);
525 struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
526 const struct efi_device_path *node);
527 /* Create a device path node of given type, sub-type, length */
528 struct efi_device_path *efi_dp_create_device_node(const u8 type,
531 /* Append device path instance */
532 struct efi_device_path *efi_dp_append_instance(
533 const struct efi_device_path *dp,
534 const struct efi_device_path *dpi);
535 /* Get next device path instance */
536 struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp,
538 /* Check if a device path contains muliple instances */
539 bool efi_dp_is_multi_instance(const struct efi_device_path *dp);
541 struct efi_device_path *efi_dp_from_dev(struct udevice *dev);
542 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
543 /* Create a device node for a block device partition. */
544 struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);
545 struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
547 struct efi_device_path *efi_dp_from_eth(void);
548 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
549 uint64_t start_address,
550 uint64_t end_address);
551 /* Determine the last device path node that is not the end node. */
552 const struct efi_device_path *efi_dp_last_node(
553 const struct efi_device_path *dp);
554 efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
555 struct efi_device_path **device_path,
556 struct efi_device_path **file_path);
557 efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
559 struct efi_device_path **device,
560 struct efi_device_path **file);
562 #define EFI_DP_TYPE(_dp, _type, _subtype) \
563 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
564 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype))
566 static inline int guidcmp(const void *g1, const void *g2)
568 return memcmp(g1, g2, sizeof(efi_guid_t));
572 * Use these to indicate that your code / data should go into the EFI runtime
573 * section and thus still be available when the OS is running
575 #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime")))
576 #define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
578 /* Indicate supported runtime services */
579 efi_status_t efi_init_runtime_supported(void);
581 /* Update CRC32 in table header */
582 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table);
584 /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region
585 * to make it available at runtime */
586 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len);
588 /* Boards may provide the functions below to implement RTS functionality */
590 void __efi_runtime EFIAPI efi_reset_system(
591 enum efi_reset_type reset_type,
592 efi_status_t reset_status,
593 unsigned long data_size, void *reset_data);
595 /* Architecture specific initialization of the EFI subsystem */
596 efi_status_t efi_reset_system_init(void);
598 efi_status_t __efi_runtime EFIAPI efi_get_time(
599 struct efi_time *time,
600 struct efi_time_cap *capabilities);
602 efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time);
604 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
606 * Entry point for the tests of the EFI API.
607 * It is called by 'bootefi selftest'
609 efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle,
610 struct efi_system_table *systab);
613 efi_status_t EFIAPI efi_get_variable(u16 *variable_name,
614 const efi_guid_t *vendor, u32 *attributes,
615 efi_uintn_t *data_size, void *data);
616 efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
618 const efi_guid_t *vendor);
619 efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
620 const efi_guid_t *vendor, u32 attributes,
621 efi_uintn_t data_size, const void *data);
623 efi_status_t EFIAPI efi_query_variable_info(
624 u32 attributes, u64 *maximum_variable_storage_size,
625 u64 *remaining_variable_storage_size,
626 u64 *maximum_variable_size);
629 * See section 3.1.3 in the v2.7 UEFI spec for more details on
630 * the layout of EFI_LOAD_OPTION. In short it is:
632 * typedef struct _EFI_LOAD_OPTION {
634 * UINT16 FilePathListLength;
635 * // CHAR16 Description[]; <-- variable length, NULL terminated
636 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
637 * <-- FilePathListLength bytes
638 * // UINT8 OptionalData[];
641 struct efi_load_option {
643 u16 file_path_length;
645 struct efi_device_path *file_path;
646 const u8 *optional_data;
649 void efi_deserialize_load_option(struct efi_load_option *lo, u8 *data);
650 unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data);
651 efi_status_t efi_bootmgr_load(efi_handle_t *handle);
653 #else /* CONFIG_IS_ENABLED(EFI_LOADER) */
655 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
656 #define __efi_runtime_data
657 #define __efi_runtime
658 static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
663 /* No loader configured, stub out EFI_ENTRY */
664 static inline void efi_restore_gd(void) { }
665 static inline void efi_set_bootdev(const char *dev, const char *devnr,
666 const char *path) { }
667 static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
668 static inline void efi_print_image_infos(void *pc) { }
670 #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
672 #endif /* _EFI_LOADER_H */