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f739fcd8 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
cb149c66 AG |
2 | /* |
3 | * EFI application loader | |
4 | * | |
5 | * Copyright (c) 2016 Alexander Graf | |
cb149c66 AG |
6 | */ |
7 | ||
cd9e18de HS |
8 | #ifndef _EFI_LOADER_H |
9 | #define _EFI_LOADER_H 1 | |
10 | ||
bee91169 | 11 | #include <common.h> |
cb149c66 AG |
12 | #include <part_efi.h> |
13 | #include <efi_api.h> | |
bee91169 | 14 | |
fdeb6f7d SG |
15 | static inline int guidcmp(const void *g1, const void *g2) |
16 | { | |
17 | return memcmp(g1, g2, sizeof(efi_guid_t)); | |
18 | } | |
19 | ||
bee91169 | 20 | /* No need for efi loader support in SPL */ |
9b5e6396 | 21 | #if CONFIG_IS_ENABLED(EFI_LOADER) |
bee91169 | 22 | |
cb149c66 AG |
23 | #include <linux/list.h> |
24 | ||
4182a129 HS |
25 | /* Maximum number of configuration tables */ |
26 | #define EFI_MAX_CONFIGURATION_TABLES 16 | |
27 | ||
4e6b5d65 HS |
28 | /* GUID used by the root node */ |
29 | #define U_BOOT_GUID \ | |
30 | EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \ | |
31 | 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b) | |
23ad52ff AT |
32 | /* GUID used as host device on sandbox */ |
33 | #define U_BOOT_HOST_DEV_GUID \ | |
34 | EFI_GUID(0xbbe4e671, 0x5773, 0x4ea1, \ | |
35 | 0x9a, 0xab, 0x3a, 0x7d, 0xbf, 0x40, 0xc4, 0x82) | |
4e6b5d65 | 36 | |
7a597259 | 37 | /* Use internal device tree when starting UEFI application */ |
f64f2232 | 38 | #define EFI_FDT_USE_INTERNAL NULL |
7a597259 | 39 | |
a2a4bc3b AT |
40 | /* Root node */ |
41 | extern efi_handle_t efi_root; | |
42 | ||
c160d2f5 RC |
43 | int __efi_entry_check(void); |
44 | int __efi_exit_check(void); | |
ae0bd3a9 | 45 | const char *__efi_nesting(void); |
af65db85 RC |
46 | const char *__efi_nesting_inc(void); |
47 | const char *__efi_nesting_dec(void); | |
c160d2f5 | 48 | |
a095aadf RC |
49 | /* |
50 | * Enter the u-boot world from UEFI: | |
51 | */ | |
bee91169 | 52 | #define EFI_ENTRY(format, ...) do { \ |
c160d2f5 | 53 | assert(__efi_entry_check()); \ |
af65db85 RC |
54 | debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \ |
55 | __func__, ##__VA_ARGS__); \ | |
bee91169 | 56 | } while(0) |
bee91169 | 57 | |
a095aadf RC |
58 | /* |
59 | * Exit the u-boot world back to UEFI: | |
60 | */ | |
804b1d73 | 61 | #define EFI_EXIT(ret) ({ \ |
c81883df | 62 | typeof(ret) _r = ret; \ |
af65db85 | 63 | debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \ |
c81883df | 64 | __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \ |
c160d2f5 RC |
65 | assert(__efi_exit_check()); \ |
66 | _r; \ | |
804b1d73 | 67 | }) |
bee91169 | 68 | |
a095aadf | 69 | /* |
ea630ce9 | 70 | * Call non-void UEFI function from u-boot and retrieve return value: |
a095aadf | 71 | */ |
ea630ce9 HS |
72 | #define EFI_CALL(exp) ({ \ |
73 | debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ | |
74 | assert(__efi_exit_check()); \ | |
75 | typeof(exp) _r = exp; \ | |
76 | assert(__efi_entry_check()); \ | |
77 | debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \ | |
78 | (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \ | |
79 | _r; \ | |
80 | }) | |
81 | ||
82 | /* | |
83 | * Call void UEFI function from u-boot: | |
84 | */ | |
85 | #define EFI_CALL_VOID(exp) do { \ | |
af65db85 | 86 | debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ |
c160d2f5 | 87 | assert(__efi_exit_check()); \ |
a095aadf | 88 | exp; \ |
c160d2f5 | 89 | assert(__efi_entry_check()); \ |
af65db85 | 90 | debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ |
a095aadf RC |
91 | } while(0) |
92 | ||
ae0bd3a9 | 93 | /* |
d5504144 | 94 | * Write an indented message with EFI prefix |
ae0bd3a9 | 95 | */ |
d5504144 HS |
96 | #define EFI_PRINT(format, ...) ({ \ |
97 | debug("%sEFI: " format, __efi_nesting(), \ | |
98 | ##__VA_ARGS__); \ | |
ae0bd3a9 HS |
99 | }) |
100 | ||
89aea436 AG |
101 | #ifdef CONFIG_SYS_CACHELINE_SIZE |
102 | #define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE | |
103 | #else | |
104 | /* Just use the greatest cache flush alignment requirement I'm aware of */ | |
105 | #define EFI_CACHELINE_SIZE 128 | |
106 | #endif | |
107 | ||
1fcb7ea2 HS |
108 | /* Key identifying current memory map */ |
109 | extern efi_uintn_t efi_memory_map_key; | |
110 | ||
50149ea3 | 111 | extern struct efi_runtime_services efi_runtime_services; |
bee91169 AG |
112 | extern struct efi_system_table systab; |
113 | ||
ebb4dd5b | 114 | extern struct efi_simple_text_output_protocol efi_con_out; |
3e603ec7 | 115 | extern struct efi_simple_text_input_protocol efi_con_in; |
ebb4dd5b | 116 | extern struct efi_console_control_protocol efi_console_control; |
cc5b7081 | 117 | extern const struct efi_device_path_to_text_protocol efi_device_path_to_text; |
e70f8dfa LL |
118 | /* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */ |
119 | extern const struct efi_device_path_utilities_protocol | |
120 | efi_device_path_utilities; | |
b1b782d3 HS |
121 | /* deprecated version of the EFI_UNICODE_COLLATION_PROTOCOL */ |
122 | extern const struct efi_unicode_collation_protocol | |
123 | efi_unicode_collation_protocol; | |
124 | /* current version of the EFI_UNICODE_COLLATION_PROTOCOL */ | |
0bc4b0da | 125 | extern const struct efi_unicode_collation_protocol |
95ab3816 | 126 | efi_unicode_collation_protocol2; |
cb728e51 AT |
127 | extern const struct efi_hii_config_routing_protocol efi_hii_config_routing; |
128 | extern const struct efi_hii_config_access_protocol efi_hii_config_access; | |
c9bfb222 LL |
129 | extern const struct efi_hii_database_protocol efi_hii_database; |
130 | extern const struct efi_hii_string_protocol efi_hii_string; | |
c1311ad4 | 131 | |
adae4313 RC |
132 | uint16_t *efi_dp_str(struct efi_device_path *dp); |
133 | ||
4e6b5d65 HS |
134 | /* GUID of the U-Boot root node */ |
135 | extern const efi_guid_t efi_u_boot_guid; | |
23ad52ff AT |
136 | #ifdef CONFIG_SANDBOX |
137 | /* GUID of U-Boot host device on sandbox */ | |
138 | extern const efi_guid_t efi_guid_host_dev; | |
139 | #endif | |
b3dd14b6 HS |
140 | /* GUID of the EFI_BLOCK_IO_PROTOCOL */ |
141 | extern const efi_guid_t efi_block_io_guid; | |
9975fe96 | 142 | extern const efi_guid_t efi_global_variable_guid; |
c1311ad4 | 143 | extern const efi_guid_t efi_guid_console_control; |
cb149c66 | 144 | extern const efi_guid_t efi_guid_device_path; |
f0959dbe HS |
145 | /* GUID of the EFI_DRIVER_BINDING_PROTOCOL */ |
146 | extern const efi_guid_t efi_guid_driver_binding_protocol; | |
a3a28f5f HS |
147 | /* event group ExitBootServices() invoked */ |
148 | extern const efi_guid_t efi_guid_event_group_exit_boot_services; | |
149 | /* event group SetVirtualAddressMap() invoked */ | |
150 | extern const efi_guid_t efi_guid_event_group_virtual_address_change; | |
151 | /* event group memory map changed */ | |
152 | extern const efi_guid_t efi_guid_event_group_memory_map_change; | |
153 | /* event group boot manager about to boot */ | |
154 | extern const efi_guid_t efi_guid_event_group_ready_to_boot; | |
155 | /* event group ResetSystem() invoked (before ExitBootServices) */ | |
156 | extern const efi_guid_t efi_guid_event_group_reset_system; | |
bc4f9133 HS |
157 | /* GUID of the device tree table */ |
158 | extern const efi_guid_t efi_guid_fdt; | |
cb149c66 | 159 | extern const efi_guid_t efi_guid_loaded_image; |
bc8fc328 | 160 | extern const efi_guid_t efi_guid_loaded_image_device_path; |
cc5b7081 | 161 | extern const efi_guid_t efi_guid_device_path_to_text_protocol; |
2a92080d RC |
162 | extern const efi_guid_t efi_simple_file_system_protocol_guid; |
163 | extern const efi_guid_t efi_file_info_guid; | |
9e6835e6 HS |
164 | /* GUID for file system information */ |
165 | extern const efi_guid_t efi_file_system_info_guid; | |
e70f8dfa | 166 | extern const efi_guid_t efi_guid_device_path_utilities_protocol; |
b1b782d3 HS |
167 | /* GUID of the deprecated Unicode collation protocol */ |
168 | extern const efi_guid_t efi_guid_unicode_collation_protocol; | |
0bc4b0da | 169 | /* GUID of the Unicode collation protocol */ |
95ab3816 | 170 | extern const efi_guid_t efi_guid_unicode_collation_protocol2; |
cb728e51 AT |
171 | extern const efi_guid_t efi_guid_hii_config_routing_protocol; |
172 | extern const efi_guid_t efi_guid_hii_config_access_protocol; | |
c9bfb222 LL |
173 | extern const efi_guid_t efi_guid_hii_database_protocol; |
174 | extern const efi_guid_t efi_guid_hii_string_protocol; | |
cb149c66 | 175 | |
50149ea3 AG |
176 | extern unsigned int __efi_runtime_start, __efi_runtime_stop; |
177 | extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; | |
178 | ||
1f1075c6 HS |
179 | /** |
180 | * struct efi_open_protocol_info_item - open protocol info item | |
181 | * | |
fe1599da HS |
182 | * When a protocol is opened a open protocol info entry is created. |
183 | * These are maintained in a list. | |
1f1075c6 HS |
184 | * |
185 | * @link: link to the list of open protocol info entries of a protocol | |
186 | * @info: information about the opening of a protocol | |
fe1599da HS |
187 | */ |
188 | struct efi_open_protocol_info_item { | |
fe1599da HS |
189 | struct list_head link; |
190 | struct efi_open_protocol_info_entry info; | |
191 | }; | |
192 | ||
1f1075c6 HS |
193 | /** |
194 | * struct efi_handler - single protocol interface of a handle | |
195 | * | |
bee91169 AG |
196 | * When the UEFI payload wants to open a protocol on an object to get its |
197 | * interface (usually a struct with callback functions), this struct maps the | |
fe1599da | 198 | * protocol GUID to the respective protocol interface |
1f1075c6 HS |
199 | * |
200 | * @link: link to the list of protocols of a handle | |
201 | * @guid: GUID of the protocol | |
202 | * @protocol_interface: protocol interface | |
203 | * @open_infos link to the list of open protocol info items | |
fe1599da | 204 | */ |
bee91169 | 205 | struct efi_handler { |
69fb6b1a | 206 | struct list_head link; |
bee91169 | 207 | const efi_guid_t *guid; |
b5349f74 | 208 | void *protocol_interface; |
fe1599da | 209 | struct list_head open_infos; |
bee91169 AG |
210 | }; |
211 | ||
cd73aba6 HS |
212 | /** |
213 | * enum efi_object_type - type of EFI object | |
214 | * | |
215 | * In UnloadImage we must be able to identify if the handle relates to a | |
216 | * started image. | |
217 | */ | |
218 | enum efi_object_type { | |
219 | EFI_OBJECT_TYPE_UNDEFINED = 0, | |
84a918e8 | 220 | EFI_OBJECT_TYPE_U_BOOT_FIRMWARE, |
cd73aba6 HS |
221 | EFI_OBJECT_TYPE_LOADED_IMAGE, |
222 | EFI_OBJECT_TYPE_STARTED_IMAGE, | |
223 | }; | |
224 | ||
fae0118e HS |
225 | /** |
226 | * struct efi_object - dereferenced EFI handle | |
227 | * | |
228 | * @link: pointers to put the handle into a linked list | |
229 | * @protocols: linked list with the protocol interfaces installed on this | |
230 | * handle | |
231 | * | |
232 | * UEFI offers a flexible and expandable object model. The objects in the UEFI | |
233 | * API are devices, drivers, and loaded images. struct efi_object is our storage | |
234 | * structure for these objects. | |
235 | * | |
236 | * When including this structure into a larger structure always put it first so | |
237 | * that when deleting a handle the whole encompassing structure can be freed. | |
bee91169 | 238 | * |
fae0118e HS |
239 | * A pointer to this structure is referred to as a handle. Typedef efi_handle_t |
240 | * has been created for such pointers. | |
bee91169 AG |
241 | */ |
242 | struct efi_object { | |
243 | /* Every UEFI object is part of a global object list */ | |
244 | struct list_head link; | |
69fb6b1a HS |
245 | /* The list of protocols */ |
246 | struct list_head protocols; | |
cd73aba6 | 247 | enum efi_object_type type; |
bee91169 AG |
248 | }; |
249 | ||
c982874e HS |
250 | /** |
251 | * struct efi_loaded_image_obj - handle of a loaded image | |
d39646a3 HS |
252 | * |
253 | * @header: EFI object header | |
556d8dc9 HS |
254 | * @exit_status: exit status passed to Exit() |
255 | * @exit_data_size: exit data size passed to Exit() | |
256 | * @exit_data: exit data passed to Exit() | |
d39646a3 HS |
257 | * @exit_jmp: long jump buffer for returning form started image |
258 | * @entry: entry address of the relocated image | |
c982874e HS |
259 | */ |
260 | struct efi_loaded_image_obj { | |
d39646a3 | 261 | struct efi_object header; |
c982874e | 262 | efi_status_t exit_status; |
556d8dc9 HS |
263 | efi_uintn_t *exit_data_size; |
264 | u16 **exit_data; | |
c982874e HS |
265 | struct jmp_buf_data exit_jmp; |
266 | EFIAPI efi_status_t (*entry)(efi_handle_t image_handle, | |
267 | struct efi_system_table *st); | |
126a43f1 | 268 | u16 image_type; |
c982874e HS |
269 | }; |
270 | ||
c6841592 HS |
271 | /** |
272 | * struct efi_event | |
273 | * | |
43bce442 | 274 | * @link: Link to list of all events |
7a69e97b | 275 | * @queue_link: Link to the list of queued events |
c6841592 HS |
276 | * @type: Type of event, see efi_create_event |
277 | * @notify_tpl: Task priority level of notifications | |
c6841592 HS |
278 | * @nofify_function: Function to call when the event is triggered |
279 | * @notify_context: Data to be passed to the notify function | |
b095f3c8 | 280 | * @group: Event group |
43bce442 HS |
281 | * @trigger_time: Period of the timer |
282 | * @trigger_next: Next time to trigger the timer | |
c6841592 | 283 | * @trigger_type: Type of timer, see efi_set_timer |
43bce442 | 284 | * @is_signaled: The event occurred. The event is in the signaled state. |
c6841592 HS |
285 | */ |
286 | struct efi_event { | |
43bce442 | 287 | struct list_head link; |
7a69e97b | 288 | struct list_head queue_link; |
b521d29e | 289 | uint32_t type; |
152cade3 | 290 | efi_uintn_t notify_tpl; |
c6841592 HS |
291 | void (EFIAPI *notify_function)(struct efi_event *event, void *context); |
292 | void *notify_context; | |
b095f3c8 | 293 | const efi_guid_t *group; |
c6841592 HS |
294 | u64 trigger_next; |
295 | u64 trigger_time; | |
b521d29e | 296 | enum efi_timer_delay trigger_type; |
e190e897 | 297 | bool is_signaled; |
c6841592 HS |
298 | }; |
299 | ||
bee91169 AG |
300 | /* This list contains all UEFI objects we know of */ |
301 | extern struct list_head efi_obj_list; | |
b095f3c8 HS |
302 | /* List of all events */ |
303 | extern struct list_head efi_events; | |
bee91169 | 304 | |
f09cea36 HS |
305 | /** |
306 | * struct efi_protocol_notification - handle for notified protocol | |
307 | * | |
308 | * When a protocol interface is installed for which an event was registered with | |
309 | * the RegisterProtocolNotify() service this structure is used to hold the | |
310 | * handle on which the protocol interface was installed. | |
311 | * | |
312 | * @link: link to list of all handles notified for this event | |
313 | * @handle: handle on which the notified protocol interface was installed | |
314 | */ | |
315 | struct efi_protocol_notification { | |
316 | struct list_head link; | |
317 | efi_handle_t handle; | |
318 | }; | |
319 | ||
ab15d414 HS |
320 | /** |
321 | * efi_register_notify_event - event registered by RegisterProtocolNotify() | |
322 | * | |
323 | * The address of this structure serves as registration value. | |
324 | * | |
f09cea36 HS |
325 | * @link: link to list of all registered events |
326 | * @event: registered event. The same event may registered for multiple | |
327 | * GUIDs. | |
328 | * @protocol: protocol for which the event is registered | |
329 | * @handles: linked list of all handles on which the notified protocol was | |
330 | * installed | |
ab15d414 HS |
331 | */ |
332 | struct efi_register_notify_event { | |
333 | struct list_head link; | |
334 | struct efi_event *event; | |
335 | efi_guid_t protocol; | |
f09cea36 | 336 | struct list_head handles; |
ab15d414 HS |
337 | }; |
338 | ||
339 | /* List of all events registered by RegisterProtocolNotify() */ | |
340 | extern struct list_head efi_register_notify_events; | |
341 | ||
056b45bc AT |
342 | /* Initialize efi execution environment */ |
343 | efi_status_t efi_init_obj_list(void); | |
f64f2232 HS |
344 | /* Install device tree */ |
345 | efi_status_t efi_install_fdt(void *fdt); | |
f9ceb6ac HS |
346 | /* Run loaded UEFI image */ |
347 | efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size); | |
88192098 HS |
348 | /* Initialize variable services */ |
349 | efi_status_t efi_init_variables(void); | |
29018abb HS |
350 | /* Notify ExitBootServices() is called */ |
351 | void efi_variables_boot_exit_notify(void); | |
4e6b5d65 HS |
352 | /* Called by bootefi to initialize root node */ |
353 | efi_status_t efi_root_node_register(void); | |
640adadf HS |
354 | /* Called by bootefi to initialize runtime */ |
355 | efi_status_t efi_initialize_system_table(void); | |
7f95104d HS |
356 | /* efi_runtime_detach() - detach unimplemented runtime functions */ |
357 | void efi_runtime_detach(void); | |
91be9a77 | 358 | /* Called by bootefi to make console interface available */ |
6f566c23 | 359 | efi_status_t efi_console_register(void); |
2a22d05d | 360 | /* Called by bootefi to make all disk storage accessible as EFI objects */ |
df9cf561 | 361 | efi_status_t efi_disk_register(void); |
64e4db0f HS |
362 | /* Create handles and protocols for the partitions of a block device */ |
363 | int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc, | |
364 | const char *if_typename, int diskid, | |
365 | const char *pdevname); | |
be8d3241 | 366 | /* Called by bootefi to make GOP (graphical) interface available */ |
80ea9b09 | 367 | efi_status_t efi_gop_register(void); |
0efe1bcf | 368 | /* Called by bootefi to make the network interface available */ |
075d425d | 369 | efi_status_t efi_net_register(void); |
b3d60900 | 370 | /* Called by bootefi to make the watchdog available */ |
d7b181d5 | 371 | efi_status_t efi_watchdog_register(void); |
e663b350 | 372 | /* Called by bootefi to make SMBIOS tables available */ |
86df34d4 BM |
373 | /** |
374 | * efi_acpi_register() - write out ACPI tables | |
375 | * | |
376 | * Called by bootefi to make ACPI tables available | |
377 | * | |
378 | * @return 0 if OK, -ENOMEM if no memory is available for the tables | |
379 | */ | |
380 | efi_status_t efi_acpi_register(void); | |
0864c565 SG |
381 | /** |
382 | * efi_smbios_register() - write out SMBIOS tables | |
383 | * | |
384 | * Called by bootefi to make SMBIOS tables available | |
385 | * | |
386 | * @return 0 if OK, -ENOMEM if no memory is available for the tables | |
387 | */ | |
7657152b | 388 | efi_status_t efi_smbios_register(void); |
0efe1bcf | 389 | |
2a92080d RC |
390 | struct efi_simple_file_system_protocol * |
391 | efi_fs_from_path(struct efi_device_path *fp); | |
392 | ||
0efe1bcf AG |
393 | /* Called by networking code to memorize the dhcp ack package */ |
394 | void efi_net_set_dhcp_ack(void *pkt, int len); | |
b3d60900 HS |
395 | /* Called by efi_set_watchdog_timer to reset the timer */ |
396 | efi_status_t efi_set_watchdog(unsigned long timeout); | |
0efe1bcf | 397 | |
bee91169 AG |
398 | /* Called from places to check whether a timer expired */ |
399 | void efi_timer_check(void); | |
400 | /* PE loader implementation */ | |
8f7e2b29 HS |
401 | efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle, void *efi, |
402 | struct efi_loaded_image *loaded_image_info); | |
bee91169 AG |
403 | /* Called once to store the pristine gd pointer */ |
404 | void efi_save_gd(void); | |
c160d2f5 RC |
405 | /* Special case handler for error/abort that just tries to dtrt to get |
406 | * back to u-boot world */ | |
bee91169 | 407 | void efi_restore_gd(void); |
50149ea3 AG |
408 | /* Call this to relocate the runtime section to an address space */ |
409 | void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map); | |
0f4060eb | 410 | /* Call this to set the current device name */ |
c07ad7c0 | 411 | void efi_set_bootdev(const char *dev, const char *devnr, const char *path); |
44549d62 | 412 | /* Add a new object to the object list. */ |
fae0118e | 413 | void efi_add_handle(efi_handle_t obj); |
2edab5e2 | 414 | /* Create handle */ |
2074f700 | 415 | efi_status_t efi_create_handle(efi_handle_t *handle); |
678e03a0 | 416 | /* Delete handle */ |
fae0118e | 417 | void efi_delete_handle(efi_handle_t obj); |
1b68153a | 418 | /* Call this to validate a handle and find the EFI object for it */ |
2074f700 | 419 | struct efi_object *efi_search_obj(const efi_handle_t handle); |
d7e0b010 AT |
420 | /* Load image */ |
421 | efi_status_t EFIAPI efi_load_image(bool boot_policy, | |
422 | efi_handle_t parent_image, | |
423 | struct efi_device_path *file_path, | |
424 | void *source_buffer, | |
425 | efi_uintn_t source_size, | |
426 | efi_handle_t *image_handle); | |
f69d63fa HS |
427 | /* Start image */ |
428 | efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle, | |
429 | efi_uintn_t *exit_data_size, | |
430 | u16 **exit_data); | |
d7e0b010 AT |
431 | /* Unload image */ |
432 | efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle); | |
3f79a2b5 | 433 | /* Find a protocol on a handle */ |
2074f700 | 434 | efi_status_t efi_search_protocol(const efi_handle_t handle, |
3f79a2b5 HS |
435 | const efi_guid_t *protocol_guid, |
436 | struct efi_handler **handler); | |
437 | /* Install new protocol on a handle */ | |
2074f700 HS |
438 | efi_status_t efi_add_protocol(const efi_handle_t handle, |
439 | const efi_guid_t *protocol, | |
3f79a2b5 HS |
440 | void *protocol_interface); |
441 | /* Delete protocol from a handle */ | |
2074f700 HS |
442 | efi_status_t efi_remove_protocol(const efi_handle_t handle, |
443 | const efi_guid_t *protocol, | |
3f79a2b5 HS |
444 | void *protocol_interface); |
445 | /* Delete all protocols from a handle */ | |
2074f700 | 446 | efi_status_t efi_remove_all_protocols(const efi_handle_t handle); |
7657ae12 HS |
447 | /* Install multiple protocol interfaces */ |
448 | efi_status_t EFIAPI efi_install_multiple_protocol_interfaces | |
449 | (efi_handle_t *handle, ...); | |
49deb455 | 450 | /* Call this to create an event */ |
152cade3 | 451 | efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, |
49deb455 HS |
452 | void (EFIAPI *notify_function) ( |
453 | struct efi_event *event, | |
454 | void *context), | |
b095f3c8 HS |
455 | void *notify_context, efi_guid_t *group, |
456 | struct efi_event **event); | |
bfc72462 | 457 | /* Call this to set a timer */ |
b521d29e | 458 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 459 | uint64_t trigger_time); |
91be9a77 | 460 | /* Call this to signal an event */ |
7eaa900e | 461 | void efi_signal_event(struct efi_event *event); |
50149ea3 | 462 | |
2a92080d RC |
463 | /* open file system: */ |
464 | struct efi_simple_file_system_protocol *efi_simple_file_system( | |
465 | struct blk_desc *desc, int part, struct efi_device_path *dp); | |
466 | ||
467 | /* open file from device-path: */ | |
468 | struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); | |
469 | ||
c3772ca1 HS |
470 | /** |
471 | * efi_size_in_pages() - convert size in bytes to size in pages | |
472 | * | |
473 | * This macro returns the number of EFI memory pages required to hold 'size' | |
474 | * bytes. | |
475 | * | |
476 | * @size: size in bytes | |
477 | * Return: size in pages | |
478 | */ | |
479 | #define efi_size_in_pages(size) ((size + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT) | |
5d00995c AG |
480 | /* Generic EFI memory allocator, call this to get memory */ |
481 | void *efi_alloc(uint64_t len, int memory_type); | |
482 | /* More specific EFI memory allocator, called by EFI payloads */ | |
f5a2a938 | 483 | efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages, |
5d00995c | 484 | uint64_t *memory); |
b61d857b | 485 | /* EFI memory free function. */ |
f5a2a938 | 486 | efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages); |
ead1274b | 487 | /* EFI memory allocator for small allocations */ |
f5a2a938 | 488 | efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size, |
ead1274b | 489 | void **buffer); |
42417bc8 SB |
490 | /* EFI pool memory free function. */ |
491 | efi_status_t efi_free_pool(void *buffer); | |
5d00995c | 492 | /* Returns the EFI memory map */ |
f5a2a938 | 493 | efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, |
5d00995c | 494 | struct efi_mem_desc *memory_map, |
f5a2a938 HS |
495 | efi_uintn_t *map_key, |
496 | efi_uintn_t *descriptor_size, | |
5d00995c AG |
497 | uint32_t *descriptor_version); |
498 | /* Adds a range into the EFI memory map */ | |
b225c92f BD |
499 | efi_status_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type, |
500 | bool overlap_only_ram); | |
b5b9eff2 PA |
501 | /* Adds a conventional range into the EFI memory map */ |
502 | efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end, | |
503 | u64 ram_top); | |
504 | ||
05ef48a2 | 505 | /* Called by board init to initialize the EFI drivers */ |
038782a2 | 506 | efi_status_t efi_driver_init(void); |
5d00995c AG |
507 | /* Called by board init to initialize the EFI memory map */ |
508 | int efi_memory_init(void); | |
488bf12d AG |
509 | /* Adds new or overrides configuration table entry to the system table */ |
510 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table); | |
56d92888 | 511 | /* Sets up a loaded image */ |
c982874e HS |
512 | efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path, |
513 | struct efi_device_path *file_path, | |
514 | struct efi_loaded_image_obj **handle_ptr, | |
515 | struct efi_loaded_image **info_ptr); | |
c9a63f44 HS |
516 | /* Print information about all loaded images */ |
517 | void efi_print_image_infos(void *pc); | |
5d00995c | 518 | |
51735ae0 AG |
519 | #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER |
520 | extern void *efi_bounce_buffer; | |
521 | #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024) | |
522 | #endif | |
523 | ||
b66c60dd RC |
524 | |
525 | struct efi_device_path *efi_dp_next(const struct efi_device_path *dp); | |
ff401d3f HS |
526 | int efi_dp_match(const struct efi_device_path *a, |
527 | const struct efi_device_path *b); | |
b66c60dd RC |
528 | struct efi_object *efi_dp_find_obj(struct efi_device_path *dp, |
529 | struct efi_device_path **rem); | |
f6dd3f35 HS |
530 | /* get size of the first device path instance excluding end node */ |
531 | efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp); | |
532 | /* size of multi-instance device path excluding end node */ | |
533 | efi_uintn_t efi_dp_size(const struct efi_device_path *dp); | |
b66c60dd RC |
534 | struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp); |
535 | struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1, | |
536 | const struct efi_device_path *dp2); | |
537 | struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp, | |
538 | const struct efi_device_path *node); | |
211314c1 HS |
539 | /* Create a device path node of given type, sub-type, length */ |
540 | struct efi_device_path *efi_dp_create_device_node(const u8 type, | |
541 | const u8 sub_type, | |
542 | const u16 length); | |
3acef5da HS |
543 | /* Append device path instance */ |
544 | struct efi_device_path *efi_dp_append_instance( | |
545 | const struct efi_device_path *dp, | |
546 | const struct efi_device_path *dpi); | |
547 | /* Get next device path instance */ | |
548 | struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp, | |
549 | efi_uintn_t *size); | |
550 | /* Check if a device path contains muliple instances */ | |
551 | bool efi_dp_is_multi_instance(const struct efi_device_path *dp); | |
b66c60dd | 552 | |
b66c60dd | 553 | struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part); |
98d48bdf HS |
554 | /* Create a device node for a block device partition. */ |
555 | struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part); | |
b66c60dd RC |
556 | struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part, |
557 | const char *path); | |
558 | struct efi_device_path *efi_dp_from_eth(void); | |
bf19273e RC |
559 | struct efi_device_path *efi_dp_from_mem(uint32_t mem_type, |
560 | uint64_t start_address, | |
561 | uint64_t end_address); | |
65436f91 HS |
562 | /* Determine the last device path node that is not the end node. */ |
563 | const struct efi_device_path *efi_dp_last_node( | |
564 | const struct efi_device_path *dp); | |
04298686 HS |
565 | efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path, |
566 | struct efi_device_path **device_path, | |
567 | struct efi_device_path **file_path); | |
f1589ffb AT |
568 | efi_status_t efi_dp_from_name(const char *dev, const char *devnr, |
569 | const char *path, | |
570 | struct efi_device_path **device, | |
571 | struct efi_device_path **file); | |
b66c60dd RC |
572 | |
573 | #define EFI_DP_TYPE(_dp, _type, _subtype) \ | |
574 | (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \ | |
575 | ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype)) | |
576 | ||
50149ea3 AG |
577 | /* |
578 | * Use these to indicate that your code / data should go into the EFI runtime | |
579 | * section and thus still be available when the OS is running | |
580 | */ | |
7e21fbca AG |
581 | #define __efi_runtime_data __attribute__ ((section (".data.efi_runtime"))) |
582 | #define __efi_runtime __attribute__ ((section (".text.efi_runtime"))) | |
bee91169 | 583 | |
e771b4b3 AT |
584 | /* Indicate supported runtime services */ |
585 | efi_status_t efi_init_runtime_supported(void); | |
586 | ||
a39f39cd HS |
587 | /* Update CRC32 in table header */ |
588 | void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table); | |
589 | ||
80a4800e AG |
590 | /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region |
591 | * to make it available at runtime */ | |
22c793e6 | 592 | efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len); |
80a4800e AG |
593 | |
594 | /* Boards may provide the functions below to implement RTS functionality */ | |
595 | ||
3c63db9c | 596 | void __efi_runtime EFIAPI efi_reset_system( |
80a4800e AG |
597 | enum efi_reset_type reset_type, |
598 | efi_status_t reset_status, | |
599 | unsigned long data_size, void *reset_data); | |
22c793e6 HS |
600 | |
601 | /* Architecture specific initialization of the EFI subsystem */ | |
602 | efi_status_t efi_reset_system_init(void); | |
80a4800e | 603 | |
3c63db9c | 604 | efi_status_t __efi_runtime EFIAPI efi_get_time( |
80a4800e AG |
605 | struct efi_time *time, |
606 | struct efi_time_cap *capabilities); | |
80a4800e | 607 | |
656f1710 HS |
608 | efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time); |
609 | ||
623b3a57 HS |
610 | #ifdef CONFIG_CMD_BOOTEFI_SELFTEST |
611 | /* | |
612 | * Entry point for the tests of the EFI API. | |
613 | * It is called by 'bootefi selftest' | |
614 | */ | |
615 | efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle, | |
616 | struct efi_system_table *systab); | |
617 | #endif | |
618 | ||
0bda81bf HS |
619 | efi_status_t EFIAPI efi_get_variable(u16 *variable_name, |
620 | const efi_guid_t *vendor, u32 *attributes, | |
621 | efi_uintn_t *data_size, void *data); | |
45c66f9c HS |
622 | efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size, |
623 | u16 *variable_name, | |
0bda81bf HS |
624 | const efi_guid_t *vendor); |
625 | efi_status_t EFIAPI efi_set_variable(u16 *variable_name, | |
626 | const efi_guid_t *vendor, u32 attributes, | |
452257a3 | 627 | efi_uintn_t data_size, const void *data); |
ad644e7c | 628 | |
ce43528d HS |
629 | efi_status_t EFIAPI efi_query_variable_info( |
630 | u32 attributes, u64 *maximum_variable_storage_size, | |
631 | u64 *remaining_variable_storage_size, | |
632 | u64 *maximum_variable_size); | |
633 | ||
1a82b341 AT |
634 | /* |
635 | * See section 3.1.3 in the v2.7 UEFI spec for more details on | |
636 | * the layout of EFI_LOAD_OPTION. In short it is: | |
637 | * | |
638 | * typedef struct _EFI_LOAD_OPTION { | |
639 | * UINT32 Attributes; | |
640 | * UINT16 FilePathListLength; | |
641 | * // CHAR16 Description[]; <-- variable length, NULL terminated | |
642 | * // EFI_DEVICE_PATH_PROTOCOL FilePathList[]; | |
643 | * <-- FilePathListLength bytes | |
644 | * // UINT8 OptionalData[]; | |
645 | * } EFI_LOAD_OPTION; | |
646 | */ | |
647 | struct efi_load_option { | |
648 | u32 attributes; | |
649 | u16 file_path_length; | |
650 | u16 *label; | |
651 | struct efi_device_path *file_path; | |
39a1ff8c | 652 | const u8 *optional_data; |
1a82b341 AT |
653 | }; |
654 | ||
655 | void efi_deserialize_load_option(struct efi_load_option *lo, u8 *data); | |
656 | unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data); | |
6b95b38c | 657 | efi_status_t efi_bootmgr_load(efi_handle_t *handle); |
9975fe96 | 658 | |
9b5e6396 | 659 | #else /* CONFIG_IS_ENABLED(EFI_LOADER) */ |
bee91169 | 660 | |
50149ea3 | 661 | /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */ |
3c63db9c AG |
662 | #define __efi_runtime_data |
663 | #define __efi_runtime | |
22c793e6 HS |
664 | static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len) |
665 | { | |
666 | return EFI_SUCCESS; | |
667 | } | |
50149ea3 | 668 | |
bee91169 AG |
669 | /* No loader configured, stub out EFI_ENTRY */ |
670 | static inline void efi_restore_gd(void) { } | |
c07ad7c0 AG |
671 | static inline void efi_set_bootdev(const char *dev, const char *devnr, |
672 | const char *path) { } | |
0efe1bcf | 673 | static inline void efi_net_set_dhcp_ack(void *pkt, int len) { } |
c9a63f44 | 674 | static inline void efi_print_image_infos(void *pc) { } |
bee91169 | 675 | |
9b5e6396 | 676 | #endif /* CONFIG_IS_ENABLED(EFI_LOADER) */ |
cd9e18de HS |
677 | |
678 | #endif /* _EFI_LOADER_H */ |