1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * EFI application loader
5 * Copyright (c) 2016 Alexander Graf
9 #define _EFI_LOADER_H 1
15 static inline int guidcmp(const void *g1
, const void *g2
)
17 return memcmp(g1
, g2
, sizeof(efi_guid_t
));
20 static inline void *guidcpy(void *dst
, const void *src
)
22 return memcpy(dst
, src
, sizeof(efi_guid_t
));
25 /* No need for efi loader support in SPL */
26 #if CONFIG_IS_ENABLED(EFI_LOADER)
28 #include <linux/list.h>
30 /* Maximum number of configuration tables */
31 #define EFI_MAX_CONFIGURATION_TABLES 16
33 /* GUID used by the root node */
35 EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \
36 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b)
37 /* GUID used as host device on sandbox */
38 #define U_BOOT_HOST_DEV_GUID \
39 EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \
40 0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82)
42 /* Use internal device tree when starting UEFI application */
43 #define EFI_FDT_USE_INTERNAL NULL
46 extern efi_handle_t efi_root
;
48 int __efi_entry_check(void);
49 int __efi_exit_check(void);
50 const char *__efi_nesting(void);
51 const char *__efi_nesting_inc(void);
52 const char *__efi_nesting_dec(void);
55 * Enter the u-boot world from UEFI:
57 #define EFI_ENTRY(format, ...) do { \
58 assert(__efi_entry_check()); \
59 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
60 __func__, ##__VA_ARGS__); \
64 * Exit the u-boot world back to UEFI:
66 #define EFI_EXIT(ret) ({ \
67 typeof(ret) _r = ret; \
68 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
69 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \
70 assert(__efi_exit_check()); \
75 * Call non-void UEFI function from u-boot and retrieve return value:
77 #define EFI_CALL(exp) ({ \
78 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
79 assert(__efi_exit_check()); \
80 typeof(exp) _r = exp; \
81 assert(__efi_entry_check()); \
82 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \
83 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \
88 * Call void UEFI function from u-boot:
90 #define EFI_CALL_VOID(exp) do { \
91 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
92 assert(__efi_exit_check()); \
94 assert(__efi_entry_check()); \
95 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
99 * Write an indented message with EFI prefix
101 #define EFI_PRINT(format, ...) ({ \
102 debug("%sEFI: " format, __efi_nesting(), \
106 #ifdef CONFIG_SYS_CACHELINE_SIZE
107 #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
109 /* Just use the greatest cache flush alignment requirement I'm aware of */
110 #define EFI_CACHELINE_SIZE 128
113 /* Key identifying current memory map */
114 extern efi_uintn_t efi_memory_map_key
;
116 extern struct efi_runtime_services efi_runtime_services
;
117 extern struct efi_system_table systab
;
119 extern struct efi_simple_text_output_protocol efi_con_out
;
120 extern struct efi_simple_text_input_protocol efi_con_in
;
121 extern struct efi_console_control_protocol efi_console_control
;
122 extern const struct efi_device_path_to_text_protocol efi_device_path_to_text
;
123 /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
124 extern const struct efi_device_path_utilities_protocol
125 efi_device_path_utilities
;
126 /* deprecated version of the EFI_UNICODE_COLLATION_PROTOCOL */
127 extern const struct efi_unicode_collation_protocol
128 efi_unicode_collation_protocol
;
129 /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */
130 extern const struct efi_unicode_collation_protocol
131 efi_unicode_collation_protocol2
;
132 extern const struct efi_hii_config_routing_protocol efi_hii_config_routing
;
133 extern const struct efi_hii_config_access_protocol efi_hii_config_access
;
134 extern const struct efi_hii_database_protocol efi_hii_database
;
135 extern const struct efi_hii_string_protocol efi_hii_string
;
136 extern const struct efi_rng_protocol efi_rng_protocol
;
138 uint16_t *efi_dp_str(struct efi_device_path
*dp
);
140 /* GUID of the U-Boot root node */
141 extern const efi_guid_t efi_u_boot_guid
;
142 #ifdef CONFIG_SANDBOX
143 /* GUID of U-Boot host device on sandbox */
144 extern const efi_guid_t efi_guid_host_dev
;
146 /* GUID of the EFI_BLOCK_IO_PROTOCOL */
147 extern const efi_guid_t efi_block_io_guid
;
148 extern const efi_guid_t efi_global_variable_guid
;
149 extern const efi_guid_t efi_guid_console_control
;
150 extern const efi_guid_t efi_guid_device_path
;
151 /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
152 extern const efi_guid_t efi_guid_driver_binding_protocol
;
153 /* event group ExitBootServices() invoked */
154 extern const efi_guid_t efi_guid_event_group_exit_boot_services
;
155 /* event group SetVirtualAddressMap() invoked */
156 extern const efi_guid_t efi_guid_event_group_virtual_address_change
;
157 /* event group memory map changed */
158 extern const efi_guid_t efi_guid_event_group_memory_map_change
;
159 /* event group boot manager about to boot */
160 extern const efi_guid_t efi_guid_event_group_ready_to_boot
;
161 /* event group ResetSystem() invoked (before ExitBootServices) */
162 extern const efi_guid_t efi_guid_event_group_reset_system
;
163 /* GUID of the device tree table */
164 extern const efi_guid_t efi_guid_fdt
;
165 extern const efi_guid_t efi_guid_loaded_image
;
166 extern const efi_guid_t efi_guid_loaded_image_device_path
;
167 extern const efi_guid_t efi_guid_device_path_to_text_protocol
;
168 extern const efi_guid_t efi_simple_file_system_protocol_guid
;
169 extern const efi_guid_t efi_file_info_guid
;
170 /* GUID for file system information */
171 extern const efi_guid_t efi_file_system_info_guid
;
172 extern const efi_guid_t efi_guid_device_path_utilities_protocol
;
173 /* GUID of the deprecated Unicode collation protocol */
174 extern const efi_guid_t efi_guid_unicode_collation_protocol
;
175 /* GUID of the Unicode collation protocol */
176 extern const efi_guid_t efi_guid_unicode_collation_protocol2
;
177 extern const efi_guid_t efi_guid_hii_config_routing_protocol
;
178 extern const efi_guid_t efi_guid_hii_config_access_protocol
;
179 extern const efi_guid_t efi_guid_hii_database_protocol
;
180 extern const efi_guid_t efi_guid_hii_string_protocol
;
182 /* GUID of RNG protocol */
183 extern const efi_guid_t efi_guid_rng_protocol
;
185 extern unsigned int __efi_runtime_start
, __efi_runtime_stop
;
186 extern unsigned int __efi_runtime_rel_start
, __efi_runtime_rel_stop
;
189 * struct efi_open_protocol_info_item - open protocol info item
191 * When a protocol is opened a open protocol info entry is created.
192 * These are maintained in a list.
194 * @link: link to the list of open protocol info entries of a protocol
195 * @info: information about the opening of a protocol
197 struct efi_open_protocol_info_item
{
198 struct list_head link
;
199 struct efi_open_protocol_info_entry info
;
203 * struct efi_handler - single protocol interface of a handle
205 * When the UEFI payload wants to open a protocol on an object to get its
206 * interface (usually a struct with callback functions), this struct maps the
207 * protocol GUID to the respective protocol interface
209 * @link: link to the list of protocols of a handle
210 * @guid: GUID of the protocol
211 * @protocol_interface: protocol interface
212 * @open_infos link to the list of open protocol info items
215 struct list_head link
;
216 const efi_guid_t
*guid
;
217 void *protocol_interface
;
218 struct list_head open_infos
;
222 * enum efi_object_type - type of EFI object
224 * In UnloadImage we must be able to identify if the handle relates to a
227 enum efi_object_type
{
228 EFI_OBJECT_TYPE_UNDEFINED
= 0,
229 EFI_OBJECT_TYPE_U_BOOT_FIRMWARE
,
230 EFI_OBJECT_TYPE_LOADED_IMAGE
,
231 EFI_OBJECT_TYPE_STARTED_IMAGE
,
235 * struct efi_object - dereferenced EFI handle
237 * @link: pointers to put the handle into a linked list
238 * @protocols: linked list with the protocol interfaces installed on this
241 * UEFI offers a flexible and expandable object model. The objects in the UEFI
242 * API are devices, drivers, and loaded images. struct efi_object is our storage
243 * structure for these objects.
245 * When including this structure into a larger structure always put it first so
246 * that when deleting a handle the whole encompassing structure can be freed.
248 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
249 * has been created for such pointers.
252 /* Every UEFI object is part of a global object list */
253 struct list_head link
;
254 /* The list of protocols */
255 struct list_head protocols
;
256 enum efi_object_type type
;
260 * struct efi_loaded_image_obj - handle of a loaded image
262 * @header: EFI object header
263 * @exit_status: exit status passed to Exit()
264 * @exit_data_size: exit data size passed to Exit()
265 * @exit_data: exit data passed to Exit()
266 * @exit_jmp: long jump buffer for returning form started image
267 * @entry: entry address of the relocated image
269 struct efi_loaded_image_obj
{
270 struct efi_object header
;
271 efi_status_t exit_status
;
272 efi_uintn_t
*exit_data_size
;
274 struct jmp_buf_data exit_jmp
;
275 EFIAPI
efi_status_t (*entry
)(efi_handle_t image_handle
,
276 struct efi_system_table
*st
);
283 * @link: Link to list of all events
284 * @queue_link: Link to the list of queued events
285 * @type: Type of event, see efi_create_event
286 * @notify_tpl: Task priority level of notifications
287 * @nofify_function: Function to call when the event is triggered
288 * @notify_context: Data to be passed to the notify function
289 * @group: Event group
290 * @trigger_time: Period of the timer
291 * @trigger_next: Next time to trigger the timer
292 * @trigger_type: Type of timer, see efi_set_timer
293 * @is_signaled: The event occurred. The event is in the signaled state.
296 struct list_head link
;
297 struct list_head queue_link
;
299 efi_uintn_t notify_tpl
;
300 void (EFIAPI
*notify_function
)(struct efi_event
*event
, void *context
);
301 void *notify_context
;
302 const efi_guid_t
*group
;
305 enum efi_timer_delay trigger_type
;
309 /* This list contains all UEFI objects we know of */
310 extern struct list_head efi_obj_list
;
311 /* List of all events */
312 extern struct list_head efi_events
;
315 * struct efi_protocol_notification - handle for notified protocol
317 * When a protocol interface is installed for which an event was registered with
318 * the RegisterProtocolNotify() service this structure is used to hold the
319 * handle on which the protocol interface was installed.
321 * @link: link to list of all handles notified for this event
322 * @handle: handle on which the notified protocol interface was installed
324 struct efi_protocol_notification
{
325 struct list_head link
;
330 * efi_register_notify_event - event registered by RegisterProtocolNotify()
332 * The address of this structure serves as registration value.
334 * @link: link to list of all registered events
335 * @event: registered event. The same event may registered for multiple
337 * @protocol: protocol for which the event is registered
338 * @handles: linked list of all handles on which the notified protocol was
341 struct efi_register_notify_event
{
342 struct list_head link
;
343 struct efi_event
*event
;
345 struct list_head handles
;
348 /* List of all events registered by RegisterProtocolNotify() */
349 extern struct list_head efi_register_notify_events
;
351 /* Initialize efi execution environment */
352 efi_status_t
efi_init_obj_list(void);
353 /* Install device tree */
354 efi_status_t
efi_install_fdt(void *fdt
);
355 /* Run loaded UEFI image */
356 efi_status_t
efi_run_image(void *source_buffer
, efi_uintn_t source_size
);
357 /* Initialize variable services */
358 efi_status_t
efi_init_variables(void);
359 /* Notify ExitBootServices() is called */
360 void efi_variables_boot_exit_notify(void);
361 /* Called by bootefi to initialize root node */
362 efi_status_t
efi_root_node_register(void);
363 /* Called by bootefi to initialize runtime */
364 efi_status_t
efi_initialize_system_table(void);
365 /* efi_runtime_detach() - detach unimplemented runtime functions */
366 void efi_runtime_detach(void);
367 /* Called by bootefi to make console interface available */
368 efi_status_t
efi_console_register(void);
369 /* Called by bootefi to make all disk storage accessible as EFI objects */
370 efi_status_t
efi_disk_register(void);
371 /* Create handles and protocols for the partitions of a block device */
372 int efi_disk_create_partitions(efi_handle_t parent
, struct blk_desc
*desc
,
373 const char *if_typename
, int diskid
,
374 const char *pdevname
);
375 /* Called by bootefi to make GOP (graphical) interface available */
376 efi_status_t
efi_gop_register(void);
377 /* Called by bootefi to make the network interface available */
378 efi_status_t
efi_net_register(void);
379 /* Called by bootefi to make the watchdog available */
380 efi_status_t
efi_watchdog_register(void);
381 efi_status_t
efi_initrd_register(void);
382 /* Called by bootefi to make SMBIOS tables available */
384 * efi_acpi_register() - write out ACPI tables
386 * Called by bootefi to make ACPI tables available
388 * @return 0 if OK, -ENOMEM if no memory is available for the tables
390 efi_status_t
efi_acpi_register(void);
392 * efi_smbios_register() - write out SMBIOS tables
394 * Called by bootefi to make SMBIOS tables available
396 * @return 0 if OK, -ENOMEM if no memory is available for the tables
398 efi_status_t
efi_smbios_register(void);
400 struct efi_simple_file_system_protocol
*
401 efi_fs_from_path(struct efi_device_path
*fp
);
403 /* Called by networking code to memorize the dhcp ack package */
404 void efi_net_set_dhcp_ack(void *pkt
, int len
);
405 /* Called by efi_set_watchdog_timer to reset the timer */
406 efi_status_t
efi_set_watchdog(unsigned long timeout
);
408 /* Called from places to check whether a timer expired */
409 void efi_timer_check(void);
410 /* PE loader implementation */
411 efi_status_t
efi_load_pe(struct efi_loaded_image_obj
*handle
, void *efi
,
412 struct efi_loaded_image
*loaded_image_info
);
413 /* Called once to store the pristine gd pointer */
414 void efi_save_gd(void);
415 /* Special case handler for error/abort that just tries to dtrt to get
416 * back to u-boot world */
417 void efi_restore_gd(void);
418 /* Call this to relocate the runtime section to an address space */
419 void efi_runtime_relocate(ulong offset
, struct efi_mem_desc
*map
);
420 /* Call this to set the current device name */
421 void efi_set_bootdev(const char *dev
, const char *devnr
, const char *path
);
422 /* Add a new object to the object list. */
423 void efi_add_handle(efi_handle_t obj
);
425 efi_status_t
efi_create_handle(efi_handle_t
*handle
);
427 void efi_delete_handle(efi_handle_t obj
);
428 /* Call this to validate a handle and find the EFI object for it */
429 struct efi_object
*efi_search_obj(const efi_handle_t handle
);
431 efi_status_t EFIAPI
efi_load_image(bool boot_policy
,
432 efi_handle_t parent_image
,
433 struct efi_device_path
*file_path
,
435 efi_uintn_t source_size
,
436 efi_handle_t
*image_handle
);
438 efi_status_t EFIAPI
efi_start_image(efi_handle_t image_handle
,
439 efi_uintn_t
*exit_data_size
,
442 efi_status_t EFIAPI
efi_unload_image(efi_handle_t image_handle
);
443 /* Find a protocol on a handle */
444 efi_status_t
efi_search_protocol(const efi_handle_t handle
,
445 const efi_guid_t
*protocol_guid
,
446 struct efi_handler
**handler
);
447 /* Install new protocol on a handle */
448 efi_status_t
efi_add_protocol(const efi_handle_t handle
,
449 const efi_guid_t
*protocol
,
450 void *protocol_interface
);
451 /* Delete protocol from a handle */
452 efi_status_t
efi_remove_protocol(const efi_handle_t handle
,
453 const efi_guid_t
*protocol
,
454 void *protocol_interface
);
455 /* Delete all protocols from a handle */
456 efi_status_t
efi_remove_all_protocols(const efi_handle_t handle
);
457 /* Install multiple protocol interfaces */
458 efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
459 (efi_handle_t
*handle
, ...);
460 /* Get handles that support a given protocol */
461 efi_status_t EFIAPI
efi_locate_handle_buffer(
462 enum efi_locate_search_type search_type
,
463 const efi_guid_t
*protocol
, void *search_key
,
464 efi_uintn_t
*no_handles
, efi_handle_t
**buffer
);
465 /* Close an previously opened protocol interface */
466 efi_status_t EFIAPI
efi_close_protocol(efi_handle_t handle
,
467 const efi_guid_t
*protocol
,
468 efi_handle_t agent_handle
,
469 efi_handle_t controller_handle
);
470 /* Open a protocol interface */
471 efi_status_t EFIAPI
efi_handle_protocol(efi_handle_t handle
,
472 const efi_guid_t
*protocol
,
473 void **protocol_interface
);
474 /* Call this to create an event */
475 efi_status_t
efi_create_event(uint32_t type
, efi_uintn_t notify_tpl
,
476 void (EFIAPI
*notify_function
) (
477 struct efi_event
*event
,
479 void *notify_context
, efi_guid_t
*group
,
480 struct efi_event
**event
);
481 /* Call this to set a timer */
482 efi_status_t
efi_set_timer(struct efi_event
*event
, enum efi_timer_delay type
,
483 uint64_t trigger_time
);
484 /* Call this to signal an event */
485 void efi_signal_event(struct efi_event
*event
);
487 /* open file system: */
488 struct efi_simple_file_system_protocol
*efi_simple_file_system(
489 struct blk_desc
*desc
, int part
, struct efi_device_path
*dp
);
491 /* open file from device-path: */
492 struct efi_file_handle
*efi_file_from_path(struct efi_device_path
*fp
);
495 * efi_size_in_pages() - convert size in bytes to size in pages
497 * This macro returns the number of EFI memory pages required to hold 'size'
500 * @size: size in bytes
501 * Return: size in pages
503 #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
504 /* Generic EFI memory allocator, call this to get memory */
505 void *efi_alloc(uint64_t len
, int memory_type
);
506 /* More specific EFI memory allocator, called by EFI payloads */
507 efi_status_t
efi_allocate_pages(int type
, int memory_type
, efi_uintn_t pages
,
509 /* EFI memory free function. */
510 efi_status_t
efi_free_pages(uint64_t memory
, efi_uintn_t pages
);
511 /* EFI memory allocator for small allocations */
512 efi_status_t
efi_allocate_pool(int pool_type
, efi_uintn_t size
,
514 /* EFI pool memory free function. */
515 efi_status_t
efi_free_pool(void *buffer
);
516 /* Returns the EFI memory map */
517 efi_status_t
efi_get_memory_map(efi_uintn_t
*memory_map_size
,
518 struct efi_mem_desc
*memory_map
,
519 efi_uintn_t
*map_key
,
520 efi_uintn_t
*descriptor_size
,
521 uint32_t *descriptor_version
);
522 /* Adds a range into the EFI memory map */
523 efi_status_t
efi_add_memory_map(uint64_t start
, uint64_t pages
, int memory_type
,
524 bool overlap_only_ram
);
525 /* Adds a conventional range into the EFI memory map */
526 efi_status_t
efi_add_conventional_memory_map(u64 ram_start
, u64 ram_end
,
529 /* Called by board init to initialize the EFI drivers */
530 efi_status_t
efi_driver_init(void);
531 /* Called by board init to initialize the EFI memory map */
532 int efi_memory_init(void);
533 /* Adds new or overrides configuration table entry to the system table */
534 efi_status_t
efi_install_configuration_table(const efi_guid_t
*guid
, void *table
);
535 /* Sets up a loaded image */
536 efi_status_t
efi_setup_loaded_image(struct efi_device_path
*device_path
,
537 struct efi_device_path
*file_path
,
538 struct efi_loaded_image_obj
**handle_ptr
,
539 struct efi_loaded_image
**info_ptr
);
540 /* Print information about all loaded images */
541 void efi_print_image_infos(void *pc
);
543 #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
544 extern void *efi_bounce_buffer
;
545 #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024)
549 struct efi_device_path
*efi_dp_next(const struct efi_device_path
*dp
);
550 int efi_dp_match(const struct efi_device_path
*a
,
551 const struct efi_device_path
*b
);
552 struct efi_object
*efi_dp_find_obj(struct efi_device_path
*dp
,
553 struct efi_device_path
**rem
);
554 /* get size of the first device path instance excluding end node */
555 efi_uintn_t
efi_dp_instance_size(const struct efi_device_path
*dp
);
556 /* size of multi-instance device path excluding end node */
557 efi_uintn_t
efi_dp_size(const struct efi_device_path
*dp
);
558 struct efi_device_path
*efi_dp_dup(const struct efi_device_path
*dp
);
559 struct efi_device_path
*efi_dp_append(const struct efi_device_path
*dp1
,
560 const struct efi_device_path
*dp2
);
561 struct efi_device_path
*efi_dp_append_node(const struct efi_device_path
*dp
,
562 const struct efi_device_path
*node
);
563 /* Create a device path node of given type, sub-type, length */
564 struct efi_device_path
*efi_dp_create_device_node(const u8 type
,
567 /* Append device path instance */
568 struct efi_device_path
*efi_dp_append_instance(
569 const struct efi_device_path
*dp
,
570 const struct efi_device_path
*dpi
);
571 /* Get next device path instance */
572 struct efi_device_path
*efi_dp_get_next_instance(struct efi_device_path
**dp
,
574 /* Check if a device path contains muliple instances */
575 bool efi_dp_is_multi_instance(const struct efi_device_path
*dp
);
577 struct efi_device_path
*efi_dp_from_part(struct blk_desc
*desc
, int part
);
578 /* Create a device node for a block device partition. */
579 struct efi_device_path
*efi_dp_part_node(struct blk_desc
*desc
, int part
);
580 struct efi_device_path
*efi_dp_from_file(struct blk_desc
*desc
, int part
,
582 struct efi_device_path
*efi_dp_from_eth(void);
583 struct efi_device_path
*efi_dp_from_mem(uint32_t mem_type
,
584 uint64_t start_address
,
585 uint64_t end_address
);
586 /* Determine the last device path node that is not the end node. */
587 const struct efi_device_path
*efi_dp_last_node(
588 const struct efi_device_path
*dp
);
589 efi_status_t
efi_dp_split_file_path(struct efi_device_path
*full_path
,
590 struct efi_device_path
**device_path
,
591 struct efi_device_path
**file_path
);
592 efi_status_t
efi_dp_from_name(const char *dev
, const char *devnr
,
594 struct efi_device_path
**device
,
595 struct efi_device_path
**file
);
597 #define EFI_DP_TYPE(_dp, _type, _subtype) \
598 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
599 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype))
602 * Use these to indicate that your code / data should go into the EFI runtime
603 * section and thus still be available when the OS is running
605 #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime")))
606 #define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
608 /* Indicate supported runtime services */
609 efi_status_t
efi_init_runtime_supported(void);
611 /* Update CRC32 in table header */
612 void __efi_runtime
efi_update_table_header_crc32(struct efi_table_hdr
*table
);
614 /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region
615 * to make it available at runtime */
616 efi_status_t
efi_add_runtime_mmio(void *mmio_ptr
, u64 len
);
618 /* Boards may provide the functions below to implement RTS functionality */
620 void __efi_runtime EFIAPI
efi_reset_system(
621 enum efi_reset_type reset_type
,
622 efi_status_t reset_status
,
623 unsigned long data_size
, void *reset_data
);
625 /* Architecture specific initialization of the EFI subsystem */
626 efi_status_t
efi_reset_system_init(void);
628 efi_status_t __efi_runtime EFIAPI
efi_get_time(
629 struct efi_time
*time
,
630 struct efi_time_cap
*capabilities
);
632 efi_status_t __efi_runtime EFIAPI
efi_set_time(struct efi_time
*time
);
634 #ifdef CONFIG_CMD_BOOTEFI_SELFTEST
636 * Entry point for the tests of the EFI API.
637 * It is called by 'bootefi selftest'
639 efi_status_t EFIAPI
efi_selftest(efi_handle_t image_handle
,
640 struct efi_system_table
*systab
);
643 efi_status_t EFIAPI
efi_get_variable(u16
*variable_name
,
644 const efi_guid_t
*vendor
, u32
*attributes
,
645 efi_uintn_t
*data_size
, void *data
);
646 efi_status_t EFIAPI
efi_get_next_variable_name(efi_uintn_t
*variable_name_size
,
648 const efi_guid_t
*vendor
);
649 efi_status_t EFIAPI
efi_set_variable(u16
*variable_name
,
650 const efi_guid_t
*vendor
, u32 attributes
,
651 efi_uintn_t data_size
, const void *data
);
653 efi_status_t EFIAPI
efi_query_variable_info(
654 u32 attributes
, u64
*maximum_variable_storage_size
,
655 u64
*remaining_variable_storage_size
,
656 u64
*maximum_variable_size
);
659 * See section 3.1.3 in the v2.7 UEFI spec for more details on
660 * the layout of EFI_LOAD_OPTION. In short it is:
662 * typedef struct _EFI_LOAD_OPTION {
664 * UINT16 FilePathListLength;
665 * // CHAR16 Description[]; <-- variable length, NULL terminated
666 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
667 * <-- FilePathListLength bytes
668 * // UINT8 OptionalData[];
671 struct efi_load_option
{
673 u16 file_path_length
;
675 struct efi_device_path
*file_path
;
676 const u8
*optional_data
;
679 void efi_deserialize_load_option(struct efi_load_option
*lo
, u8
*data
);
680 unsigned long efi_serialize_load_option(struct efi_load_option
*lo
, u8
**data
);
681 efi_status_t
efi_bootmgr_load(efi_handle_t
*handle
);
683 #else /* CONFIG_IS_ENABLED(EFI_LOADER) */
685 /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
686 #define __efi_runtime_data
687 #define __efi_runtime
688 static inline efi_status_t
efi_add_runtime_mmio(void *mmio_ptr
, u64 len
)
693 /* No loader configured, stub out EFI_ENTRY */
694 static inline void efi_restore_gd(void) { }
695 static inline void efi_set_bootdev(const char *dev
, const char *devnr
,
696 const char *path
) { }
697 static inline void efi_net_set_dhcp_ack(void *pkt
, int len
) { }
698 static inline void efi_print_image_infos(void *pc
) { }
700 #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
702 #endif /* _EFI_LOADER_H */