1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * EFI application loader
5 * Copyright (c) 2016 Alexander Graf
9 #define _EFI_LOADER_H 1
21 static inline int guidcmp(const void *g1, const void *g2)
23 return memcmp(g1, g2, sizeof(efi_guid_t));
26 static inline void *guidcpy(void *dst, const void *src)
28 return memcpy(dst, src, sizeof(efi_guid_t));
31 /* No need for efi loader support in SPL */
32 #if CONFIG_IS_ENABLED(EFI_LOADER)
34 #include <linux/list.h>
35 #include <linux/oid_registry.h>
37 /* Maximum number of configuration tables */
38 #define EFI_MAX_CONFIGURATION_TABLES 16
40 /* GUID used by the root node */
42 EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \
43 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b)
44 /* GUID used as host device on sandbox */
45 #define U_BOOT_HOST_DEV_GUID \
46 EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \
47 0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82)
48 /* GUID used as root for virtio devices */
49 #define U_BOOT_VIRTIO_DEV_GUID \
50 EFI_GUID(0x63293792, 0xadf5, 0x9325, \
51 0xb9, 0x9f, 0x4e, 0x0e, 0x45, 0x5c, 0x1b, 0x1e)
53 /* Use internal device tree when starting UEFI application */
54 #define EFI_FDT_USE_INTERNAL NULL
57 extern efi_handle_t efi_root;
59 /* EFI system partition */
60 extern struct efi_system_partition {
64 } efi_system_partition;
66 int __efi_entry_check(void);
67 int __efi_exit_check(void);
68 const char *__efi_nesting(void);
69 const char *__efi_nesting_inc(void);
70 const char *__efi_nesting_dec(void);
73 * Enter the u-boot world from UEFI:
75 #define EFI_ENTRY(format, ...) do { \
76 assert(__efi_entry_check()); \
77 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
78 __func__, ##__VA_ARGS__); \
82 * Exit the u-boot world back to UEFI:
84 #define EFI_EXIT(ret) ({ \
85 typeof(ret) _r = ret; \
86 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
87 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \
88 assert(__efi_exit_check()); \
93 * Call non-void UEFI function from u-boot and retrieve return value:
95 #define EFI_CALL(exp) ({ \
96 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
97 assert(__efi_exit_check()); \
98 typeof(exp) _r = exp; \
99 assert(__efi_entry_check()); \
100 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \
101 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \
106 * Call void UEFI function from u-boot:
108 #define EFI_CALL_VOID(exp) do { \
109 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
110 assert(__efi_exit_check()); \
112 assert(__efi_entry_check()); \
113 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
117 * Write an indented message with EFI prefix
119 #define EFI_PRINT(format, ...) ({ \
120 debug("%sEFI: " format, __efi_nesting(), \
124 #ifdef CONFIG_SYS_CACHELINE_SIZE
125 #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
127 /* Just use the greatest cache flush alignment requirement I'm aware of */
128 #define EFI_CACHELINE_SIZE 128
131 /* Key identifying current memory map */
132 extern efi_uintn_t efi_memory_map_key;
134 extern struct efi_runtime_services efi_runtime_services;
135 extern struct efi_system_table systab;
137 extern struct efi_simple_text_output_protocol efi_con_out;
138 extern struct efi_simple_text_input_protocol efi_con_in;
139 extern struct efi_console_control_protocol efi_console_control;
140 extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
141 /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
142 extern const struct efi_device_path_utilities_protocol
143 efi_device_path_utilities;
144 /* deprecated version of the EFI_UNICODE_COLLATION_PROTOCOL */
145 extern const struct efi_unicode_collation_protocol
146 efi_unicode_collation_protocol;
147 /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */
148 extern const struct efi_unicode_collation_protocol
149 efi_unicode_collation_protocol2;
150 extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
151 extern const struct efi_hii_config_access_protocol efi_hii_config_access;
152 extern const struct efi_hii_database_protocol efi_hii_database;
153 extern const struct efi_hii_string_protocol efi_hii_string;
154 extern const struct efi_rng_protocol efi_rng_protocol;
156 uint16_t *efi_dp_str(struct efi_device_path *dp);
158 /* GUID of the U-Boot root node */
159 extern const efi_guid_t efi_u_boot_guid;
160 #ifdef CONFIG_SANDBOX
161 /* GUID of U-Boot host device on sandbox */
162 extern const efi_guid_t efi_guid_host_dev;
164 /* GUID of the EFI_BLOCK_IO_PROTOCOL */
165 extern const efi_guid_t efi_block_io_guid;
166 extern const efi_guid_t efi_global_variable_guid;
167 extern const efi_guid_t efi_guid_console_control;
168 extern const efi_guid_t efi_guid_device_path;
169 /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
170 extern const efi_guid_t efi_guid_driver_binding_protocol;
171 /* event group ExitBootServices() invoked */
172 extern const efi_guid_t efi_guid_event_group_exit_boot_services;
173 /* event group SetVirtualAddressMap() invoked */
174 extern const efi_guid_t efi_guid_event_group_virtual_address_change;
175 /* event group memory map changed */
176 extern const efi_guid_t efi_guid_event_group_memory_map_change;
177 /* event group boot manager about to boot */
178 extern const efi_guid_t efi_guid_event_group_ready_to_boot;
179 /* event group ResetSystem() invoked (before ExitBootServices) */
180 extern const efi_guid_t efi_guid_event_group_reset_system;
181 /* GUID of the device tree table */
182 extern const efi_guid_t efi_guid_fdt;
183 extern const efi_guid_t efi_guid_loaded_image;
184 extern const efi_guid_t efi_guid_loaded_image_device_path;
185 extern const efi_guid_t efi_guid_device_path_to_text_protocol;
186 extern const efi_guid_t efi_simple_file_system_protocol_guid;
187 extern const efi_guid_t efi_file_info_guid;
188 /* GUID for file system information */
189 extern const efi_guid_t efi_file_system_info_guid;
190 extern const efi_guid_t efi_guid_device_path_utilities_protocol;
191 /* GUID of the deprecated Unicode collation protocol */
192 extern const efi_guid_t efi_guid_unicode_collation_protocol;
193 /* GUID of the Unicode collation protocol */
194 extern const efi_guid_t efi_guid_unicode_collation_protocol2;
195 extern const efi_guid_t efi_guid_hii_config_routing_protocol;
196 extern const efi_guid_t efi_guid_hii_config_access_protocol;
197 extern const efi_guid_t efi_guid_hii_database_protocol;
198 extern const efi_guid_t efi_guid_hii_string_protocol;
199 /* GUIDs for authentication */
200 extern const efi_guid_t efi_guid_image_security_database;
201 extern const efi_guid_t efi_guid_sha256;
202 extern const efi_guid_t efi_guid_cert_x509;
203 extern const efi_guid_t efi_guid_cert_x509_sha256;
204 extern const efi_guid_t efi_guid_cert_type_pkcs7;
206 /* GUID of RNG protocol */
207 extern const efi_guid_t efi_guid_rng_protocol;
209 extern unsigned int __efi_runtime_start, __efi_runtime_stop;
210 extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
213 * struct efi_open_protocol_info_item - open protocol info item
215 * When a protocol is opened a open protocol info entry is created.
216 * These are maintained in a list.
218 * @link: link to the list of open protocol info entries of a protocol
219 * @info: information about the opening of a protocol
221 struct efi_open_protocol_info_item {
222 struct list_head link;
223 struct efi_open_protocol_info_entry info;
227 * struct efi_handler - single protocol interface of a handle
229 * When the UEFI payload wants to open a protocol on an object to get its
230 * interface (usually a struct with callback functions), this struct maps the
231 * protocol GUID to the respective protocol interface
233 * @link: link to the list of protocols of a handle
234 * @guid: GUID of the protocol
235 * @protocol_interface: protocol interface
236 * @open_infos link to the list of open protocol info items
239 struct list_head link;
240 const efi_guid_t *guid;
241 void *protocol_interface;
242 struct list_head open_infos;
246 * enum efi_object_type - type of EFI object
248 * In UnloadImage we must be able to identify if the handle relates to a
251 enum efi_object_type {
252 EFI_OBJECT_TYPE_UNDEFINED = 0,
253 EFI_OBJECT_TYPE_U_BOOT_FIRMWARE,
254 EFI_OBJECT_TYPE_LOADED_IMAGE,
255 EFI_OBJECT_TYPE_STARTED_IMAGE,
259 * struct efi_object - dereferenced EFI handle
261 * @link: pointers to put the handle into a linked list
262 * @protocols: linked list with the protocol interfaces installed on this
265 * UEFI offers a flexible and expandable object model. The objects in the UEFI
266 * API are devices, drivers, and loaded images. struct efi_object is our storage
267 * structure for these objects.
269 * When including this structure into a larger structure always put it first so
270 * that when deleting a handle the whole encompassing structure can be freed.
272 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
273 * has been created for such pointers.
276 /* Every UEFI object is part of a global object list */
277 struct list_head link;
278 /* The list of protocols */
279 struct list_head protocols;
280 enum efi_object_type type;
283 enum efi_image_auth_status {
284 EFI_IMAGE_AUTH_FAILED = 0,
285 EFI_IMAGE_AUTH_PASSED,
289 * struct efi_loaded_image_obj - handle of a loaded image
291 * @header: EFI object header
292 * @exit_status: exit status passed to Exit()
293 * @exit_data_size: exit data size passed to Exit()
294 * @exit_data: exit data passed to Exit()
295 * @exit_jmp: long jump buffer for returning form started image
296 * @entry: entry address of the relocated image
298 struct efi_loaded_image_obj {
299 struct efi_object header;
300 efi_status_t exit_status;
301 efi_uintn_t *exit_data_size;
303 struct jmp_buf_data exit_jmp;
304 EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
305 struct efi_system_table *st);
307 enum efi_image_auth_status auth_status;
313 * @link: Link to list of all events
314 * @queue_link: Link to the list of queued events
315 * @type: Type of event, see efi_create_event
316 * @notify_tpl: Task priority level of notifications
317 * @nofify_function: Function to call when the event is triggered
318 * @notify_context: Data to be passed to the notify function
319 * @group: Event group
320 * @trigger_time: Period of the timer
321 * @trigger_next: Next time to trigger the timer
322 * @trigger_type: Type of timer, see efi_set_timer
323 * @is_signaled: The event occurred. The event is in the signaled state.
326 struct list_head link;
327 struct list_head queue_link;
329 efi_uintn_t notify_tpl;
330 void (EFIAPI *notify_function)(struct efi_event *event, void *context);
331 void *notify_context;
332 const efi_guid_t *group;
335 enum efi_timer_delay trigger_type;
339 /* This list contains all UEFI objects we know of */
340 extern struct list_head efi_obj_list;
341 /* List of all events */
342 extern struct list_head efi_events;
345 * struct efi_protocol_notification - handle for notified protocol
347 * When a protocol interface is installed for which an event was registered with
348 * the RegisterProtocolNotify() service this structure is used to hold the
349 * handle on which the protocol interface was installed.
351 * @link: link to list of all handles notified for this event
352 * @handle: handle on which the notified protocol interface was installed
354 struct efi_protocol_notification {
355 struct list_head link;
360 * efi_register_notify_event - event registered by RegisterProtocolNotify()
362 * The address of this structure serves as registration value.
364 * @link: link to list of all registered events
365 * @event: registered event. The same event may registered for multiple
367 * @protocol: protocol for which the event is registered
368 * @handles: linked list of all handles on which the notified protocol was
371 struct efi_register_notify_event {
372 struct list_head link;
373 struct efi_event *event;
375 struct list_head handles;
378 /* List of all events registered by RegisterProtocolNotify() */
379 extern struct list_head efi_register_notify_events;
381 /* Initialize efi execution environment */
382 efi_status_t efi_init_obj_list(void);
383 /* Install device tree */
384 efi_status_t efi_install_fdt(void *fdt);
385 /* Run loaded UEFI image */
386 efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size);
387 /* Initialize variable services */
388 efi_status_t efi_init_variables(void);
389 /* Notify ExitBootServices() is called */
390 void efi_variables_boot_exit_notify(void);
391 /* Called by bootefi to initialize root node */
392 efi_status_t efi_root_node_register(void);
393 /* Called by bootefi to initialize runtime */
394 efi_status_t efi_initialize_system_table(void);
395 /* efi_runtime_detach() - detach unimplemented runtime functions */
396 void efi_runtime_detach(void);
397 /* Called by bootefi to make console interface available */
398 efi_status_t efi_console_register(void);
399 /* Called by bootefi to make all disk storage accessible as EFI objects */
400 efi_status_t efi_disk_register(void);
401 /* Create handles and protocols for the partitions of a block device */
402 int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
403 const char *if_typename, int diskid,
404 const char *pdevname);
405 /* Check if it is EFI system partition */
406 bool efi_disk_is_system_part(efi_handle_t handle);
407 /* Called by bootefi to make GOP (graphical) interface available */
408 efi_status_t efi_gop_register(void);
409 /* Called by bootefi to make the network interface available */
410 efi_status_t efi_net_register(void);
411 /* Called by bootefi to make the watchdog available */
412 efi_status_t efi_watchdog_register(void);
413 efi_status_t efi_initrd_register(void);
414 /* Called by bootefi to make SMBIOS tables available */
416 * efi_acpi_register() - write out ACPI tables
418 * Called by bootefi to make ACPI tables available
420 * @return 0 if OK, -ENOMEM if no memory is available for the tables
422 efi_status_t efi_acpi_register(void);
424 * efi_smbios_register() - write out SMBIOS tables
426 * Called by bootefi to make SMBIOS tables available
428 * @return 0 if OK, -ENOMEM if no memory is available for the tables
430 efi_status_t efi_smbios_register(void);
432 struct efi_simple_file_system_protocol *
433 efi_fs_from_path(struct efi_device_path *fp);
435 /* Called by networking code to memorize the dhcp ack package */
436 void efi_net_set_dhcp_ack(void *pkt, int len);
437 /* Called by efi_set_watchdog_timer to reset the timer */
438 efi_status_t efi_set_watchdog(unsigned long timeout);
440 /* Called from places to check whether a timer expired */
441 void efi_timer_check(void);
442 /* PE loader implementation */
443 efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
444 void *efi, size_t efi_size,
445 struct efi_loaded_image *loaded_image_info);
446 /* Called once to store the pristine gd pointer */
447 void efi_save_gd(void);
448 /* Special case handler for error/abort that just tries to dtrt to get
449 * back to u-boot world */
450 void efi_restore_gd(void);
451 /* Call this to relocate the runtime section to an address space */
452 void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
453 /* Call this to set the current device name */
454 void efi_set_bootdev(const char *dev, const char *devnr, const char *path);
455 /* Add a new object to the object list. */
456 void efi_add_handle(efi_handle_t obj);
458 efi_status_t efi_create_handle(efi_handle_t *handle);
460 void efi_delete_handle(efi_handle_t obj);
461 /* Call this to validate a handle and find the EFI object for it */
462 struct efi_object *efi_search_obj(const efi_handle_t handle);
464 efi_status_t EFIAPI efi_load_image(bool boot_policy,
465 efi_handle_t parent_image,
466 struct efi_device_path *file_path,
468 efi_uintn_t source_size,
469 efi_handle_t *image_handle);
471 efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
472 efi_uintn_t *exit_data_size,
475 efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle);
476 /* Find a protocol on a handle */
477 efi_status_t efi_search_protocol(const efi_handle_t handle,
478 const efi_guid_t *protocol_guid,
479 struct efi_handler **handler);
480 /* Install new protocol on a handle */
481 efi_status_t efi_add_protocol(const efi_handle_t handle,
482 const efi_guid_t *protocol,
483 void *protocol_interface);
484 /* Delete protocol from a handle */
485 efi_status_t efi_remove_protocol(const efi_handle_t handle,
486 const efi_guid_t *protocol,
487 void *protocol_interface);
488 /* Delete all protocols from a handle */
489 efi_status_t efi_remove_all_protocols(const efi_handle_t handle);
490 /* Install multiple protocol interfaces */
491 efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
492 (efi_handle_t *handle, ...);
493 /* Get handles that support a given protocol */
494 efi_status_t EFIAPI efi_locate_handle_buffer(
495 enum efi_locate_search_type search_type,
496 const efi_guid_t *protocol, void *search_key,
497 efi_uintn_t *no_handles, efi_handle_t **buffer);
498 /* Close an previously opened protocol interface */
499 efi_status_t EFIAPI efi_close_protocol(efi_handle_t handle,
500 const efi_guid_t *protocol,
501 efi_handle_t agent_handle,
502 efi_handle_t controller_handle);
503 /* Open a protocol interface */
504 efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle,
505 const efi_guid_t *protocol,
506 void **protocol_interface);
507 /* Call this to create an event */
508 efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
509 void (EFIAPI *notify_function) (
510 struct efi_event *event,
512 void *notify_context, efi_guid_t *group,
513 struct efi_event **event);
514 /* Call this to set a timer */
515 efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
516 uint64_t trigger_time);
517 /* Call this to signal an event */
518 void efi_signal_event(struct efi_event *event);
520 /* open file system: */
521 struct efi_simple_file_system_protocol *efi_simple_file_system(
522 struct blk_desc *desc, int part, struct efi_device_path *dp);
524 /* open file from device-path: */
525 struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp);
528 * efi_size_in_pages() - convert size in bytes to size in pages
530 * This macro returns the number of EFI memory pages required to hold 'size'
533 * @size: size in bytes
534 * Return: size in pages
536 #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
537 /* Generic EFI memory allocator, call this to get memory */
538 void *efi_alloc(uint64_t len, int memory_type);
539 /* More specific EFI memory allocator, called by EFI payloads */
540 efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages,
542 /* EFI memory free function. */
543 efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages);
544 /* EFI memory allocator for small allocations */
545 efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size,
547 /* EFI pool memory free function. */
548 efi_status_t efi_free_pool(void *buffer);
549 /* Returns the EFI memory map */
550 efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
551 struct efi_mem_desc *memory_map,
552 efi_uintn_t *map_key,
553 efi_uintn_t *descriptor_size,
554 uint32_t *descriptor_version);
555 /* Adds a range into the EFI memory map */
556 efi_status_t efi_add_memory_map(u64 start, u64 size, int memory_type);
557 /* Adds a conventional range into the EFI memory map */
558 efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end,
561 /* Called by board init to initialize the EFI drivers */
562 efi_status_t efi_driver_init(void);
563 /* Called by board init to initialize the EFI memory map */
564 int efi_memory_init(void);
565 /* Adds new or overrides configuration table entry to the system table */
566 efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table);
567 /* Sets up a loaded image */
568 efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
569 struct efi_device_path *file_path,
570 struct efi_loaded_image_obj **handle_ptr,
571 struct efi_loaded_image **info_ptr);
572 /* Print information about all loaded images */
573 void efi_print_image_infos(void *pc);
575 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
576 extern void *efi_bounce_buffer;
577 #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024)
581 struct efi_device_path *efi_dp_next(const struct efi_device_path *dp);
582 int efi_dp_match(const struct efi_device_path *a,
583 const struct efi_device_path *b);
584 struct efi_object *efi_dp_find_obj(struct efi_device_path *dp,
585 struct efi_device_path **rem);
586 /* get size of the first device path instance excluding end node */
587 efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp);
588 /* size of multi-instance device path excluding end node */
589 efi_uintn_t efi_dp_size(const struct efi_device_path *dp);
590 struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp);
591 struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1,
592 const struct efi_device_path *dp2);
593 struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
594 const struct efi_device_path *node);
595 /* Create a device path node of given type, sub-type, length */
596 struct efi_device_path *efi_dp_create_device_node(const u8 type,
599 /* Append device path instance */
600 struct efi_device_path *efi_dp_append_instance(
601 const struct efi_device_path *dp,
602 const struct efi_device_path *dpi);
603 /* Get next device path instance */
604 struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp,
606 /* Check if a device path contains muliple instances */
607 bool efi_dp_is_multi_instance(const struct efi_device_path *dp);
609 struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
610 /* Create a device node for a block device partition. */
611 struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);
612 struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
614 struct efi_device_path *efi_dp_from_eth(void);
615 struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
616 uint64_t start_address,
617 uint64_t end_address);
618 /* Determine the last device path node that is not the end node. */
619 const struct efi_device_path *efi_dp_last_node(
620 const struct efi_device_path *dp);
621 efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
622 struct efi_device_path **device_path,
623 struct efi_device_path **file_path);
624 efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
626 struct efi_device_path **device,
627 struct efi_device_path **file);
629 #define EFI_DP_TYPE(_dp, _type, _subtype) \
630 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
631 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype))
634 * Use these to indicate that your code / data should go into the EFI runtime
635 * section and thus still be available when the OS is running
637 #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime")))
638 #define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
640 /* Indicate supported runtime services */
641 efi_status_t efi_init_runtime_supported(void);
643 /* Update CRC32 in table header */
644 void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table);
646 /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region
647 * to make it available at runtime */
648 efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len);
650 /* Boards may provide the functions below to implement RTS functionality */
652 void __efi_runtime EFIAPI efi_reset_system(
653 enum efi_reset_type reset_type,
654 efi_status_t reset_status,
655 unsigned long data_size, void *reset_data);
657 /* Architecture specific initialization of the EFI subsystem */
658 efi_status_t efi_reset_system_init(void);
660 efi_status_t __efi_runtime EFIAPI efi_get_time(
661 struct efi_time *time,
662 struct efi_time_cap *capabilities);
664 efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time);
666 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
668 * Entry point for the tests of the EFI API.
669 * It is called by 'bootefi selftest'
671 efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle,
672 struct efi_system_table *systab);
675 efi_status_t EFIAPI efi_get_variable(u16 *variable_name,
676 const efi_guid_t *vendor, u32 *attributes,
677 efi_uintn_t *data_size, void *data);
678 efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
681 efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
682 const efi_guid_t *vendor, u32 attributes,
683 efi_uintn_t data_size, const void *data);
685 efi_status_t EFIAPI efi_query_variable_info(
686 u32 attributes, u64 *maximum_variable_storage_size,
687 u64 *remaining_variable_storage_size,
688 u64 *maximum_variable_size);
691 * See section 3.1.3 in the v2.7 UEFI spec for more details on
692 * the layout of EFI_LOAD_OPTION. In short it is:
694 * typedef struct _EFI_LOAD_OPTION {
696 * UINT16 FilePathListLength;
697 * // CHAR16 Description[]; <-- variable length, NULL terminated
698 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
699 * <-- FilePathListLength bytes
700 * // UINT8 OptionalData[];
703 struct efi_load_option {
705 u16 file_path_length;
707 struct efi_device_path *file_path;
708 const u8 *optional_data;
711 void efi_deserialize_load_option(struct efi_load_option *lo, u8 *data);
712 unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data);
713 efi_status_t efi_bootmgr_load(efi_handle_t *handle);
716 * efi_image_regions - A list of memory regions
718 * @max: Maximum number of regions
719 * @num: Number of regions
720 * @reg: array of regions
722 struct efi_image_regions {
725 struct image_region reg[];
729 * efi_sig_data - A decoded data of struct efi_signature_data
731 * This structure represents an internal form of signature in
732 * signature database. A listed list may represent a signature list.
734 * @next: Pointer to next entry
735 * @onwer: Signature owner
736 * @data: Pointer to signature data
737 * @size: Size of signature data
739 struct efi_sig_data {
740 struct efi_sig_data *next;
747 * efi_signature_store - A decoded data of signature database
749 * This structure represents an internal form of signature database.
751 * @next: Pointer to next entry
752 * @sig_type: Signature type
753 * @sig_data_list: Pointer to signature list
755 struct efi_signature_store {
756 struct efi_signature_store *next;
758 struct efi_sig_data *sig_data_list;
761 struct x509_certificate;
762 struct pkcs7_message;
764 bool efi_signature_verify_cert(struct x509_certificate *cert,
765 struct efi_signature_store *dbx);
766 bool efi_signature_verify_signers(struct pkcs7_message *msg,
767 struct efi_signature_store *dbx);
768 bool efi_signature_verify_with_sigdb(struct efi_image_regions *regs,
769 struct pkcs7_message *msg,
770 struct efi_signature_store *db,
771 struct x509_certificate **cert);
773 efi_status_t efi_image_region_add(struct efi_image_regions *regs,
774 const void *start, const void *end,
777 void efi_sigstore_free(struct efi_signature_store *sigstore);
778 struct efi_signature_store *efi_sigstore_parse_sigdb(u16 *name);
780 bool efi_secure_boot_enabled(void);
782 bool efi_image_parse(void *efi, size_t len, struct efi_image_regions **regp,
783 WIN_CERTIFICATE **auth, size_t *auth_len);
785 #else /* CONFIG_IS_ENABLED(EFI_LOADER) */
787 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
788 #define __efi_runtime_data
789 #define __efi_runtime
790 static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
795 /* No loader configured, stub out EFI_ENTRY */
796 static inline void efi_restore_gd(void) { }
797 static inline void efi_set_bootdev(const char *dev, const char *devnr,
798 const char *path) { }
799 static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
800 static inline void efi_print_image_infos(void *pc) { }
802 #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
804 #endif /* _EFI_LOADER_H */