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)
29 extern efi_handle_t efi_root;
31 int __efi_entry_check(void);
32 int __efi_exit_check(void);
33 const char *__efi_nesting(void);
34 const char *__efi_nesting_inc(void);
35 const char *__efi_nesting_dec(void);
38 * Enter the u-boot world from UEFI:
40 #define EFI_ENTRY(format, ...) do { \
41 assert(__efi_entry_check()); \
42 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
43 __func__, ##__VA_ARGS__); \
47 * Exit the u-boot world back to UEFI:
49 #define EFI_EXIT(ret) ({ \
50 typeof(ret) _r = ret; \
51 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
52 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \
53 assert(__efi_exit_check()); \
58 * Call non-void UEFI function from u-boot and retrieve return value:
60 #define EFI_CALL(exp) ({ \
61 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
62 assert(__efi_exit_check()); \
63 typeof(exp) _r = exp; \
64 assert(__efi_entry_check()); \
65 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \
66 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \
71 * Call void UEFI function from u-boot:
73 #define EFI_CALL_VOID(exp) do { \
74 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
75 assert(__efi_exit_check()); \
77 assert(__efi_entry_check()); \
78 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
82 * Write an indented message with EFI prefix
84 #define EFI_PRINT(format, ...) ({ \
85 debug("%sEFI: " format, __efi_nesting(), \
89 #ifdef CONFIG_SYS_CACHELINE_SIZE
90 #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
92 /* Just use the greatest cache flush alignment requirement I'm aware of */
93 #define EFI_CACHELINE_SIZE 128
96 /* Key identifying current memory map */
97 extern efi_uintn_t efi_memory_map_key;
99 extern struct efi_runtime_services efi_runtime_services;
100 extern struct efi_system_table systab;
102 extern struct efi_simple_text_output_protocol efi_con_out;
103 extern struct efi_simple_text_input_protocol efi_con_in;
104 extern struct efi_console_control_protocol efi_console_control;
105 extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
106 /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
107 extern const struct efi_device_path_utilities_protocol
108 efi_device_path_utilities;
109 /* deprecated version of the EFI_UNICODE_COLLATION_PROTOCOL */
110 extern const struct efi_unicode_collation_protocol
111 efi_unicode_collation_protocol;
112 /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */
113 extern const struct efi_unicode_collation_protocol
114 efi_unicode_collation_protocol2;
115 extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
116 extern const struct efi_hii_config_access_protocol efi_hii_config_access;
117 extern const struct efi_hii_database_protocol efi_hii_database;
118 extern const struct efi_hii_string_protocol efi_hii_string;
120 uint16_t *efi_dp_str(struct efi_device_path *dp);
122 /* GUID of the U-Boot root node */
123 extern const efi_guid_t efi_u_boot_guid;
124 /* GUID of the EFI_BLOCK_IO_PROTOCOL */
125 extern const efi_guid_t efi_block_io_guid;
126 extern const efi_guid_t efi_global_variable_guid;
127 extern const efi_guid_t efi_guid_console_control;
128 extern const efi_guid_t efi_guid_device_path;
129 /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
130 extern const efi_guid_t efi_guid_driver_binding_protocol;
131 /* event group ExitBootServices() invoked */
132 extern const efi_guid_t efi_guid_event_group_exit_boot_services;
133 /* event group SetVirtualAddressMap() invoked */
134 extern const efi_guid_t efi_guid_event_group_virtual_address_change;
135 /* event group memory map changed */
136 extern const efi_guid_t efi_guid_event_group_memory_map_change;
137 /* event group boot manager about to boot */
138 extern const efi_guid_t efi_guid_event_group_ready_to_boot;
139 /* event group ResetSystem() invoked (before ExitBootServices) */
140 extern const efi_guid_t efi_guid_event_group_reset_system;
141 /* GUID of the device tree table */
142 extern const efi_guid_t efi_guid_fdt;
143 extern const efi_guid_t efi_guid_loaded_image;
144 extern const efi_guid_t efi_guid_loaded_image_device_path;
145 extern const efi_guid_t efi_guid_device_path_to_text_protocol;
146 extern const efi_guid_t efi_simple_file_system_protocol_guid;
147 extern const efi_guid_t efi_file_info_guid;
148 /* GUID for file system information */
149 extern const efi_guid_t efi_file_system_info_guid;
150 extern const efi_guid_t efi_guid_device_path_utilities_protocol;
151 /* GUID of the deprecated Unicode collation protocol */
152 extern const efi_guid_t efi_guid_unicode_collation_protocol;
153 /* GUID of the Unicode collation protocol */
154 extern const efi_guid_t efi_guid_unicode_collation_protocol2;
155 extern const efi_guid_t efi_guid_hii_config_routing_protocol;
156 extern const efi_guid_t efi_guid_hii_config_access_protocol;
157 extern const efi_guid_t efi_guid_hii_database_protocol;
158 extern const efi_guid_t efi_guid_hii_string_protocol;
160 extern unsigned int __efi_runtime_start, __efi_runtime_stop;
161 extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
164 * struct efi_open_protocol_info_item - open protocol info item
166 * When a protocol is opened a open protocol info entry is created.
167 * These are maintained in a list.
169 * @link: link to the list of open protocol info entries of a protocol
170 * @info: information about the opening of a protocol
172 struct efi_open_protocol_info_item {
173 struct list_head link;
174 struct efi_open_protocol_info_entry info;
178 * struct efi_handler - single protocol interface of a handle
180 * When the UEFI payload wants to open a protocol on an object to get its
181 * interface (usually a struct with callback functions), this struct maps the
182 * protocol GUID to the respective protocol interface
184 * @link: link to the list of protocols of a handle
185 * @guid: GUID of the protocol
186 * @protocol_interface: protocol interface
187 * @open_infos link to the list of open protocol info items
190 struct list_head link;
191 const efi_guid_t *guid;
192 void *protocol_interface;
193 struct list_head open_infos;
197 * enum efi_object_type - type of EFI object
199 * In UnloadImage we must be able to identify if the handle relates to a
202 enum efi_object_type {
203 EFI_OBJECT_TYPE_UNDEFINED = 0,
204 EFI_OBJECT_TYPE_U_BOOT_FIRMWARE,
205 EFI_OBJECT_TYPE_LOADED_IMAGE,
206 EFI_OBJECT_TYPE_STARTED_IMAGE,
210 * struct efi_object - dereferenced EFI handle
212 * @link: pointers to put the handle into a linked list
213 * @protocols: linked list with the protocol interfaces installed on this
216 * UEFI offers a flexible and expandable object model. The objects in the UEFI
217 * API are devices, drivers, and loaded images. struct efi_object is our storage
218 * structure for these objects.
220 * When including this structure into a larger structure always put it first so
221 * that when deleting a handle the whole encompassing structure can be freed.
223 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
224 * has been created for such pointers.
227 /* Every UEFI object is part of a global object list */
228 struct list_head link;
229 /* The list of protocols */
230 struct list_head protocols;
231 enum efi_object_type type;
235 * struct efi_loaded_image_obj - handle of a loaded image
237 * @header: EFI object header
238 * @exit_status: exit status passed to Exit()
239 * @exit_data_size: exit data size passed to Exit()
240 * @exit_data: exit data passed to Exit()
241 * @exit_jmp: long jump buffer for returning form started image
242 * @entry: entry address of the relocated image
244 struct efi_loaded_image_obj {
245 struct efi_object header;
246 efi_status_t exit_status;
247 efi_uintn_t *exit_data_size;
249 struct jmp_buf_data exit_jmp;
250 EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
251 struct efi_system_table *st);
258 * @link: Link to list of all events
259 * @queue_link: Link to the list of queued events
260 * @type: Type of event, see efi_create_event
261 * @notify_tpl: Task priority level of notifications
262 * @nofify_function: Function to call when the event is triggered
263 * @notify_context: Data to be passed to the notify function
264 * @group: Event group
265 * @trigger_time: Period of the timer
266 * @trigger_next: Next time to trigger the timer
267 * @trigger_type: Type of timer, see efi_set_timer
268 * @is_signaled: The event occurred. The event is in the signaled state.
271 struct list_head link;
272 struct list_head queue_link;
274 efi_uintn_t notify_tpl;
275 void (EFIAPI *notify_function)(struct efi_event *event, void *context);
276 void *notify_context;
277 const efi_guid_t *group;
280 enum efi_timer_delay trigger_type;
284 /* This list contains all UEFI objects we know of */
285 extern struct list_head efi_obj_list;
286 /* List of all events */
287 extern struct list_head efi_events;
290 * struct efi_protocol_notification - handle for notified protocol
292 * When a protocol interface is installed for which an event was registered with
293 * the RegisterProtocolNotify() service this structure is used to hold the
294 * handle on which the protocol interface was installed.
296 * @link: link to list of all handles notified for this event
297 * @handle: handle on which the notified protocol interface was installed
299 struct efi_protocol_notification {
300 struct list_head link;
305 * efi_register_notify_event - event registered by RegisterProtocolNotify()
307 * The address of this structure serves as registration value.
309 * @link: link to list of all registered events
310 * @event: registered event. The same event may registered for multiple
312 * @protocol: protocol for which the event is registered
313 * @handles: linked list of all handles on which the notified protocol was
316 struct efi_register_notify_event {
317 struct list_head link;
318 struct efi_event *event;
320 struct list_head handles;
323 /* List of all events registered by RegisterProtocolNotify() */
324 extern struct list_head efi_register_notify_events;
326 /* Initialize efi execution environment */
327 efi_status_t efi_init_obj_list(void);
328 /* Initialize variable services */
329 efi_status_t efi_init_variables(void);
330 /* Notify ExitBootServices() is called */
331 void efi_variables_boot_exit_notify(void);
332 /* Called by bootefi to initialize root node */
333 efi_status_t efi_root_node_register(void);
334 /* Called by bootefi to initialize runtime */
335 efi_status_t efi_initialize_system_table(void);
336 /* efi_runtime_detach() - detach unimplemented runtime functions */
337 void efi_runtime_detach(void);
338 /* Called by bootefi to make console interface available */
339 efi_status_t efi_console_register(void);
340 /* Called by bootefi to make all disk storage accessible as EFI objects */
341 efi_status_t efi_disk_register(void);
342 /* Create handles and protocols for the partitions of a block device */
343 int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
344 const char *if_typename, int diskid,
345 const char *pdevname);
346 /* Called by bootefi to make GOP (graphical) interface available */
347 efi_status_t efi_gop_register(void);
348 /* Called by bootefi to make the network interface available */
349 efi_status_t efi_net_register(void);
350 /* Called by bootefi to make the watchdog available */
351 efi_status_t efi_watchdog_register(void);
352 /* Called by bootefi to make SMBIOS tables available */
354 * efi_acpi_register() - write out ACPI tables
356 * Called by bootefi to make ACPI tables available
358 * @return 0 if OK, -ENOMEM if no memory is available for the tables
360 efi_status_t efi_acpi_register(void);
362 * efi_smbios_register() - write out SMBIOS tables
364 * Called by bootefi to make SMBIOS tables available
366 * @return 0 if OK, -ENOMEM if no memory is available for the tables
368 efi_status_t efi_smbios_register(void);
370 struct efi_simple_file_system_protocol *
371 efi_fs_from_path(struct efi_device_path *fp);
373 /* Called by networking code to memorize the dhcp ack package */
374 void efi_net_set_dhcp_ack(void *pkt, int len);
375 /* Called by efi_set_watchdog_timer to reset the timer */
376 efi_status_t efi_set_watchdog(unsigned long timeout);
378 /* Called from places to check whether a timer expired */
379 void efi_timer_check(void);
380 /* PE loader implementation */
381 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi,
382 struct efi_loaded_image *loaded_image_info);
383 /* Called once to store the pristine gd pointer */
384 void efi_save_gd(void);
385 /* Special case handler for error/abort that just tries to dtrt to get
386 * back to u-boot world */
387 void efi_restore_gd(void);
388 /* Call this to relocate the runtime section to an address space */
389 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
390 /* Call this to set the current device name */
391 void efi_set_bootdev(const char *dev, const char *devnr, const char *path);
392 /* Add a new object to the object list. */
393 void efi_add_handle(efi_handle_t obj);
395 efi_status_t efi_create_handle(efi_handle_t *handle);
397 void efi_delete_handle(efi_handle_t obj);
398 /* Call this to validate a handle and find the EFI object for it */
399 struct efi_object *efi_search_obj(const efi_handle_t handle);
401 efi_status_t EFIAPI efi_load_image(bool boot_policy,
402 efi_handle_t parent_image,
403 struct efi_device_path *file_path,
405 efi_uintn_t source_size,
406 efi_handle_t *image_handle);
408 efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
409 efi_uintn_t *exit_data_size,
412 efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle);
413 /* Find a protocol on a handle */
414 efi_status_t efi_search_protocol(const efi_handle_t handle,
415 const efi_guid_t *protocol_guid,
416 struct efi_handler **handler);
417 /* Install new protocol on a handle */
418 efi_status_t efi_add_protocol(const efi_handle_t handle,
419 const efi_guid_t *protocol,
420 void *protocol_interface);
421 /* Delete protocol from a handle */
422 efi_status_t efi_remove_protocol(const efi_handle_t handle,
423 const efi_guid_t *protocol,
424 void *protocol_interface);
425 /* Delete all protocols from a handle */
426 efi_status_t efi_remove_all_protocols(const efi_handle_t handle);
427 /* Install multiple protocol interfaces */
428 efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
429 (efi_handle_t *handle, ...);
430 /* Call this to create an event */
431 efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
432 void (EFIAPI *notify_function) (
433 struct efi_event *event,
435 void *notify_context, efi_guid_t *group,
436 struct efi_event **event);
437 /* Call this to set a timer */
438 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
439 uint64_t trigger_time);
440 /* Call this to signal an event */
441 void efi_signal_event(struct efi_event *event);
443 /* open file system: */
444 struct efi_simple_file_system_protocol *efi_simple_file_system(
445 struct blk_desc *desc, int part, struct efi_device_path *dp);
447 /* open file from device-path: */
448 struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp);
451 * efi_size_in_pages() - convert size in bytes to size in pages
453 * This macro returns the number of EFI memory pages required to hold 'size'
456 * @size: size in bytes
457 * Return: size in pages
459 #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
460 /* Generic EFI memory allocator, call this to get memory */
461 void *efi_alloc(uint64_t len, int memory_type);
462 /* More specific EFI memory allocator, called by EFI payloads */
463 efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages,
465 /* EFI memory free function. */
466 efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages);
467 /* EFI memory allocator for small allocations */
468 efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size,
470 /* EFI pool memory free function. */
471 efi_status_t efi_free_pool(void *buffer);
472 /* Returns the EFI memory map */
473 efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
474 struct efi_mem_desc *memory_map,
475 efi_uintn_t *map_key,
476 efi_uintn_t *descriptor_size,
477 uint32_t *descriptor_version);
478 /* Adds a range into the EFI memory map */
479 uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type,
480 bool overlap_only_ram);
481 /* Called by board init to initialize the EFI drivers */
482 efi_status_t efi_driver_init(void);
483 /* Called by board init to initialize the EFI memory map */
484 int efi_memory_init(void);
485 /* Adds new or overrides configuration table entry to the system table */
486 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table);
487 /* Sets up a loaded image */
488 efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
489 struct efi_device_path *file_path,
490 struct efi_loaded_image_obj **handle_ptr,
491 struct efi_loaded_image **info_ptr);
492 /* Print information about all loaded images */
493 void efi_print_image_infos(void *pc);
495 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
496 extern void *efi_bounce_buffer;
497 #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024)
501 struct efi_device_path *efi_dp_next(const struct efi_device_path *dp);
502 int efi_dp_match(const struct efi_device_path *a,
503 const struct efi_device_path *b);
504 struct efi_object *efi_dp_find_obj(struct efi_device_path *dp,
505 struct efi_device_path **rem);
506 /* get size of the first device path instance excluding end node */
507 efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp);
508 /* size of multi-instance device path excluding end node */
509 efi_uintn_t efi_dp_size(const struct efi_device_path *dp);
510 struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp);
511 struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1,
512 const struct efi_device_path *dp2);
513 struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
514 const struct efi_device_path *node);
515 /* Create a device path node of given type, sub-type, length */
516 struct efi_device_path *efi_dp_create_device_node(const u8 type,
519 /* Append device path instance */
520 struct efi_device_path *efi_dp_append_instance(
521 const struct efi_device_path *dp,
522 const struct efi_device_path *dpi);
523 /* Get next device path instance */
524 struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp,
526 /* Check if a device path contains muliple instances */
527 bool efi_dp_is_multi_instance(const struct efi_device_path *dp);
529 struct efi_device_path *efi_dp_from_dev(struct udevice *dev);
530 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
531 /* Create a device node for a block device partition. */
532 struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);
533 struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
535 struct efi_device_path *efi_dp_from_eth(void);
536 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
537 uint64_t start_address,
538 uint64_t end_address);
539 /* Determine the last device path node that is not the end node. */
540 const struct efi_device_path *efi_dp_last_node(
541 const struct efi_device_path *dp);
542 efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
543 struct efi_device_path **device_path,
544 struct efi_device_path **file_path);
545 efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
547 struct efi_device_path **device,
548 struct efi_device_path **file);
550 #define EFI_DP_TYPE(_dp, _type, _subtype) \
551 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
552 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype))
555 * ascii2unicode() - convert ASCII string to UTF-16 string
557 * A zero terminated ASCII string is converted to a zero terminated UTF-16
558 * string. The output buffer must be preassigned.
560 * @unicode: preassigned output buffer for UTF-16 string
561 * @ascii: ASCII string to be converted
563 static inline void ascii2unicode(u16 *unicode, const char *ascii)
566 *(unicode++) = *(ascii++);
570 static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2)
572 return memcmp(g1, g2, sizeof(efi_guid_t));
576 * Use these to indicate that your code / data should go into the EFI runtime
577 * section and thus still be available when the OS is running
579 #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime")))
580 #define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
582 /* Indicate supported runtime services */
583 efi_status_t efi_init_runtime_supported(void);
585 /* Update CRC32 in table header */
586 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table);
588 /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region
589 * to make it available at runtime */
590 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len);
592 /* Boards may provide the functions below to implement RTS functionality */
594 void __efi_runtime EFIAPI efi_reset_system(
595 enum efi_reset_type reset_type,
596 efi_status_t reset_status,
597 unsigned long data_size, void *reset_data);
599 /* Architecture specific initialization of the EFI subsystem */
600 efi_status_t efi_reset_system_init(void);
602 efi_status_t __efi_runtime EFIAPI efi_get_time(
603 struct efi_time *time,
604 struct efi_time_cap *capabilities);
606 efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time);
608 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
610 * Entry point for the tests of the EFI API.
611 * It is called by 'bootefi selftest'
613 efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle,
614 struct efi_system_table *systab);
617 efi_status_t EFIAPI efi_get_variable(u16 *variable_name,
618 const efi_guid_t *vendor, u32 *attributes,
619 efi_uintn_t *data_size, void *data);
620 efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
622 const efi_guid_t *vendor);
623 efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
624 const efi_guid_t *vendor, u32 attributes,
625 efi_uintn_t data_size, const void *data);
627 efi_status_t EFIAPI efi_query_variable_info(
628 u32 attributes, u64 *maximum_variable_storage_size,
629 u64 *remaining_variable_storage_size,
630 u64 *maximum_variable_size);
633 * See section 3.1.3 in the v2.7 UEFI spec for more details on
634 * the layout of EFI_LOAD_OPTION. In short it is:
636 * typedef struct _EFI_LOAD_OPTION {
638 * UINT16 FilePathListLength;
639 * // CHAR16 Description[]; <-- variable length, NULL terminated
640 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
641 * <-- FilePathListLength bytes
642 * // UINT8 OptionalData[];
645 struct efi_load_option {
647 u16 file_path_length;
649 struct efi_device_path *file_path;
650 const u8 *optional_data;
653 void efi_deserialize_load_option(struct efi_load_option *lo, u8 *data);
654 unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data);
655 efi_status_t efi_bootmgr_load(efi_handle_t *handle);
657 #else /* CONFIG_IS_ENABLED(EFI_LOADER) */
659 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
660 #define __efi_runtime_data
661 #define __efi_runtime
662 static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
667 /* No loader configured, stub out EFI_ENTRY */
668 static inline void efi_restore_gd(void) { }
669 static inline void efi_set_bootdev(const char *dev, const char *devnr,
670 const char *path) { }
671 static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
672 static inline void efi_print_image_infos(void *pc) { }
674 #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
676 #endif /* _EFI_LOADER_H */