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cb149c66 AG |
1 | /* |
2 | * EFI application loader | |
3 | * | |
4 | * Copyright (c) 2016 Alexander Graf | |
5 | * | |
6 | * SPDX-License-Identifier: GPL-2.0+ | |
7 | */ | |
8 | ||
cd9e18de HS |
9 | #ifndef _EFI_LOADER_H |
10 | #define _EFI_LOADER_H 1 | |
11 | ||
bee91169 | 12 | #include <common.h> |
cb149c66 AG |
13 | #include <part_efi.h> |
14 | #include <efi_api.h> | |
bee91169 AG |
15 | |
16 | /* No need for efi loader support in SPL */ | |
17 | #if defined(CONFIG_EFI_LOADER) && !defined(CONFIG_SPL_BUILD) | |
18 | ||
cb149c66 AG |
19 | #include <linux/list.h> |
20 | ||
c160d2f5 RC |
21 | int __efi_entry_check(void); |
22 | int __efi_exit_check(void); | |
ae0bd3a9 | 23 | const char *__efi_nesting(void); |
af65db85 RC |
24 | const char *__efi_nesting_inc(void); |
25 | const char *__efi_nesting_dec(void); | |
c160d2f5 | 26 | |
a095aadf RC |
27 | /* |
28 | * Enter the u-boot world from UEFI: | |
29 | */ | |
bee91169 | 30 | #define EFI_ENTRY(format, ...) do { \ |
c160d2f5 | 31 | assert(__efi_entry_check()); \ |
af65db85 RC |
32 | debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \ |
33 | __func__, ##__VA_ARGS__); \ | |
bee91169 | 34 | } while(0) |
bee91169 | 35 | |
a095aadf RC |
36 | /* |
37 | * Exit the u-boot world back to UEFI: | |
38 | */ | |
804b1d73 | 39 | #define EFI_EXIT(ret) ({ \ |
c81883df | 40 | typeof(ret) _r = ret; \ |
af65db85 | 41 | debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \ |
c81883df | 42 | __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \ |
c160d2f5 RC |
43 | assert(__efi_exit_check()); \ |
44 | _r; \ | |
804b1d73 | 45 | }) |
bee91169 | 46 | |
a095aadf | 47 | /* |
ea630ce9 | 48 | * Call non-void UEFI function from u-boot and retrieve return value: |
a095aadf | 49 | */ |
ea630ce9 HS |
50 | #define EFI_CALL(exp) ({ \ |
51 | debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ | |
52 | assert(__efi_exit_check()); \ | |
53 | typeof(exp) _r = exp; \ | |
54 | assert(__efi_entry_check()); \ | |
55 | debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \ | |
56 | (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \ | |
57 | _r; \ | |
58 | }) | |
59 | ||
60 | /* | |
61 | * Call void UEFI function from u-boot: | |
62 | */ | |
63 | #define EFI_CALL_VOID(exp) do { \ | |
af65db85 | 64 | debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \ |
c160d2f5 | 65 | assert(__efi_exit_check()); \ |
a095aadf | 66 | exp; \ |
c160d2f5 | 67 | assert(__efi_entry_check()); \ |
af65db85 | 68 | debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \ |
a095aadf RC |
69 | } while(0) |
70 | ||
ae0bd3a9 HS |
71 | /* |
72 | * Write GUID | |
73 | */ | |
74 | #define EFI_PRINT_GUID(txt, guid) ({ \ | |
75 | debug("%sEFI: %s %pUl\n", __efi_nesting(), txt, guid); \ | |
76 | }) | |
77 | ||
50149ea3 | 78 | extern struct efi_runtime_services efi_runtime_services; |
bee91169 AG |
79 | extern struct efi_system_table systab; |
80 | ||
ebb4dd5b | 81 | extern struct efi_simple_text_output_protocol efi_con_out; |
91be9a77 | 82 | extern struct efi_simple_input_interface efi_con_in; |
ebb4dd5b | 83 | extern struct efi_console_control_protocol efi_console_control; |
cc5b7081 | 84 | extern const struct efi_device_path_to_text_protocol efi_device_path_to_text; |
c1311ad4 | 85 | |
adae4313 RC |
86 | uint16_t *efi_dp_str(struct efi_device_path *dp); |
87 | ||
9975fe96 | 88 | extern const efi_guid_t efi_global_variable_guid; |
c1311ad4 | 89 | extern const efi_guid_t efi_guid_console_control; |
cb149c66 AG |
90 | extern const efi_guid_t efi_guid_device_path; |
91 | extern const efi_guid_t efi_guid_loaded_image; | |
cc5b7081 | 92 | extern const efi_guid_t efi_guid_device_path_to_text_protocol; |
2a92080d RC |
93 | extern const efi_guid_t efi_simple_file_system_protocol_guid; |
94 | extern const efi_guid_t efi_file_info_guid; | |
cb149c66 | 95 | |
50149ea3 AG |
96 | extern unsigned int __efi_runtime_start, __efi_runtime_stop; |
97 | extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop; | |
98 | ||
fe1599da HS |
99 | /* |
100 | * When a protocol is opened a open protocol info entry is created. | |
101 | * These are maintained in a list. | |
102 | */ | |
103 | struct efi_open_protocol_info_item { | |
104 | /* Link to the list of open protocol info entries of a protocol */ | |
105 | struct list_head link; | |
106 | struct efi_open_protocol_info_entry info; | |
107 | }; | |
108 | ||
bee91169 AG |
109 | /* |
110 | * When the UEFI payload wants to open a protocol on an object to get its | |
111 | * interface (usually a struct with callback functions), this struct maps the | |
fe1599da HS |
112 | * protocol GUID to the respective protocol interface |
113 | */ | |
bee91169 | 114 | struct efi_handler { |
69fb6b1a HS |
115 | /* Link to the list of protocols of a handle */ |
116 | struct list_head link; | |
bee91169 | 117 | const efi_guid_t *guid; |
b5349f74 | 118 | void *protocol_interface; |
fe1599da HS |
119 | /* Link to the list of open protocol info items */ |
120 | struct list_head open_infos; | |
bee91169 AG |
121 | }; |
122 | ||
123 | /* | |
124 | * UEFI has a poor man's OO model where one "object" can be polymorphic and have | |
125 | * multiple different protocols (classes) attached to it. | |
126 | * | |
127 | * This struct is the parent struct for all of our actual implementation objects | |
128 | * that can include it to make themselves an EFI object | |
129 | */ | |
130 | struct efi_object { | |
131 | /* Every UEFI object is part of a global object list */ | |
132 | struct list_head link; | |
69fb6b1a HS |
133 | /* The list of protocols */ |
134 | struct list_head protocols; | |
bee91169 AG |
135 | /* The object spawner can either use this for data or as identifier */ |
136 | void *handle; | |
137 | }; | |
138 | ||
c6841592 | 139 | /** |
140 | * struct efi_event | |
141 | * | |
142 | * @type: Type of event, see efi_create_event | |
143 | * @notify_tpl: Task priority level of notifications | |
144 | * @trigger_time: Period of the timer | |
145 | * @trigger_next: Next time to trigger the timer | |
146 | * @nofify_function: Function to call when the event is triggered | |
147 | * @notify_context: Data to be passed to the notify function | |
148 | * @trigger_type: Type of timer, see efi_set_timer | |
e190e897 HS |
149 | * @queued: The notification function is queued |
150 | * @signaled: The event occurred. The event is in the signaled state. | |
c6841592 | 151 | */ |
152 | struct efi_event { | |
b521d29e | 153 | uint32_t type; |
152cade3 | 154 | efi_uintn_t notify_tpl; |
c6841592 | 155 | void (EFIAPI *notify_function)(struct efi_event *event, void *context); |
156 | void *notify_context; | |
157 | u64 trigger_next; | |
158 | u64 trigger_time; | |
b521d29e | 159 | enum efi_timer_delay trigger_type; |
e190e897 HS |
160 | bool is_queued; |
161 | bool is_signaled; | |
c6841592 | 162 | }; |
163 | ||
164 | ||
bee91169 AG |
165 | /* This list contains all UEFI objects we know of */ |
166 | extern struct list_head efi_obj_list; | |
167 | ||
91be9a77 | 168 | /* Called by bootefi to make console interface available */ |
169 | int efi_console_register(void); | |
2a22d05d AG |
170 | /* Called by bootefi to make all disk storage accessible as EFI objects */ |
171 | int efi_disk_register(void); | |
be8d3241 AG |
172 | /* Called by bootefi to make GOP (graphical) interface available */ |
173 | int efi_gop_register(void); | |
0efe1bcf | 174 | /* Called by bootefi to make the network interface available */ |
95c5553e | 175 | int efi_net_register(void); |
b3d60900 HS |
176 | /* Called by bootefi to make the watchdog available */ |
177 | int efi_watchdog_register(void); | |
e663b350 AG |
178 | /* Called by bootefi to make SMBIOS tables available */ |
179 | void efi_smbios_register(void); | |
0efe1bcf | 180 | |
2a92080d RC |
181 | struct efi_simple_file_system_protocol * |
182 | efi_fs_from_path(struct efi_device_path *fp); | |
183 | ||
0efe1bcf AG |
184 | /* Called by networking code to memorize the dhcp ack package */ |
185 | void efi_net_set_dhcp_ack(void *pkt, int len); | |
b3d60900 HS |
186 | /* Called by efi_set_watchdog_timer to reset the timer */ |
187 | efi_status_t efi_set_watchdog(unsigned long timeout); | |
0efe1bcf | 188 | |
bee91169 AG |
189 | /* Called from places to check whether a timer expired */ |
190 | void efi_timer_check(void); | |
191 | /* PE loader implementation */ | |
cb149c66 | 192 | void *efi_load_pe(void *efi, struct efi_loaded_image *loaded_image_info); |
bee91169 AG |
193 | /* Called once to store the pristine gd pointer */ |
194 | void efi_save_gd(void); | |
c160d2f5 RC |
195 | /* Special case handler for error/abort that just tries to dtrt to get |
196 | * back to u-boot world */ | |
bee91169 | 197 | void efi_restore_gd(void); |
50149ea3 AG |
198 | /* Call this to relocate the runtime section to an address space */ |
199 | void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map); | |
0f4060eb | 200 | /* Call this to set the current device name */ |
c07ad7c0 | 201 | void efi_set_bootdev(const char *dev, const char *devnr, const char *path); |
44549d62 HS |
202 | /* Add a new object to the object list. */ |
203 | void efi_add_handle(struct efi_object *obj); | |
2edab5e2 HS |
204 | /* Create handle */ |
205 | efi_status_t efi_create_handle(void **handle); | |
678e03a0 HS |
206 | /* Delete handle */ |
207 | void efi_delete_handle(struct efi_object *obj); | |
1b68153a | 208 | /* Call this to validate a handle and find the EFI object for it */ |
085d07cd | 209 | struct efi_object *efi_search_obj(const void *handle); |
3f79a2b5 HS |
210 | /* Find a protocol on a handle */ |
211 | efi_status_t efi_search_protocol(const void *handle, | |
212 | const efi_guid_t *protocol_guid, | |
213 | struct efi_handler **handler); | |
214 | /* Install new protocol on a handle */ | |
215 | efi_status_t efi_add_protocol(const void *handle, const efi_guid_t *protocol, | |
216 | void *protocol_interface); | |
217 | /* Delete protocol from a handle */ | |
218 | efi_status_t efi_remove_protocol(const void *handle, const efi_guid_t *protocol, | |
219 | void *protocol_interface); | |
220 | /* Delete all protocols from a handle */ | |
221 | efi_status_t efi_remove_all_protocols(const void *handle); | |
49deb455 | 222 | /* Call this to create an event */ |
152cade3 | 223 | efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl, |
49deb455 | 224 | void (EFIAPI *notify_function) ( |
225 | struct efi_event *event, | |
226 | void *context), | |
227 | void *notify_context, struct efi_event **event); | |
bfc72462 | 228 | /* Call this to set a timer */ |
b521d29e | 229 | efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type, |
bfc72462 | 230 | uint64_t trigger_time); |
91be9a77 | 231 | /* Call this to signal an event */ |
232 | void efi_signal_event(struct efi_event *event); | |
50149ea3 | 233 | |
2a92080d RC |
234 | /* open file system: */ |
235 | struct efi_simple_file_system_protocol *efi_simple_file_system( | |
236 | struct blk_desc *desc, int part, struct efi_device_path *dp); | |
237 | ||
238 | /* open file from device-path: */ | |
239 | struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp); | |
240 | ||
241 | ||
5d00995c AG |
242 | /* Generic EFI memory allocator, call this to get memory */ |
243 | void *efi_alloc(uint64_t len, int memory_type); | |
244 | /* More specific EFI memory allocator, called by EFI payloads */ | |
f5a2a938 | 245 | efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages, |
5d00995c | 246 | uint64_t *memory); |
b61d857b | 247 | /* EFI memory free function. */ |
f5a2a938 | 248 | efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages); |
ead1274b | 249 | /* EFI memory allocator for small allocations */ |
f5a2a938 | 250 | efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size, |
ead1274b | 251 | void **buffer); |
42417bc8 SB |
252 | /* EFI pool memory free function. */ |
253 | efi_status_t efi_free_pool(void *buffer); | |
5d00995c | 254 | /* Returns the EFI memory map */ |
f5a2a938 | 255 | efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size, |
5d00995c | 256 | struct efi_mem_desc *memory_map, |
f5a2a938 HS |
257 | efi_uintn_t *map_key, |
258 | efi_uintn_t *descriptor_size, | |
5d00995c AG |
259 | uint32_t *descriptor_version); |
260 | /* Adds a range into the EFI memory map */ | |
261 | uint64_t efi_add_memory_map(uint64_t start, uint64_t pages, int memory_type, | |
262 | bool overlap_only_ram); | |
263 | /* Called by board init to initialize the EFI memory map */ | |
264 | int efi_memory_init(void); | |
488bf12d AG |
265 | /* Adds new or overrides configuration table entry to the system table */ |
266 | efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table); | |
56d92888 HS |
267 | /* Sets up a loaded image */ |
268 | efi_status_t efi_setup_loaded_image( | |
269 | struct efi_loaded_image *info, struct efi_object *obj, | |
270 | struct efi_device_path *device_path, | |
271 | struct efi_device_path *file_path); | |
9975fe96 RC |
272 | efi_status_t efi_load_image_from_path(struct efi_device_path *file_path, |
273 | void **buffer); | |
5d00995c | 274 | |
51735ae0 AG |
275 | #ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER |
276 | extern void *efi_bounce_buffer; | |
277 | #define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024) | |
278 | #endif | |
279 | ||
b66c60dd RC |
280 | |
281 | struct efi_device_path *efi_dp_next(const struct efi_device_path *dp); | |
ff401d3f HS |
282 | int efi_dp_match(const struct efi_device_path *a, |
283 | const struct efi_device_path *b); | |
b66c60dd RC |
284 | struct efi_object *efi_dp_find_obj(struct efi_device_path *dp, |
285 | struct efi_device_path **rem); | |
286 | unsigned efi_dp_size(const struct efi_device_path *dp); | |
287 | struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp); | |
288 | struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1, | |
289 | const struct efi_device_path *dp2); | |
290 | struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp, | |
291 | const struct efi_device_path *node); | |
292 | ||
293 | ||
294 | struct efi_device_path *efi_dp_from_dev(struct udevice *dev); | |
295 | struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part); | |
296 | struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part, | |
297 | const char *path); | |
298 | struct efi_device_path *efi_dp_from_eth(void); | |
bf19273e RC |
299 | struct efi_device_path *efi_dp_from_mem(uint32_t mem_type, |
300 | uint64_t start_address, | |
301 | uint64_t end_address); | |
b66c60dd RC |
302 | void efi_dp_split_file_path(struct efi_device_path *full_path, |
303 | struct efi_device_path **device_path, | |
304 | struct efi_device_path **file_path); | |
305 | ||
306 | #define EFI_DP_TYPE(_dp, _type, _subtype) \ | |
307 | (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \ | |
308 | ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype)) | |
309 | ||
0f4060eb | 310 | /* Convert strings from normal C strings to uEFI strings */ |
487d756f | 311 | static inline void ascii2unicode(u16 *unicode, const char *ascii) |
0f4060eb AG |
312 | { |
313 | while (*ascii) | |
314 | *(unicode++) = *(ascii++); | |
315 | } | |
316 | ||
3e094c59 RC |
317 | static inline int guidcmp(const efi_guid_t *g1, const efi_guid_t *g2) |
318 | { | |
319 | return memcmp(g1, g2, sizeof(efi_guid_t)); | |
320 | } | |
321 | ||
50149ea3 AG |
322 | /* |
323 | * Use these to indicate that your code / data should go into the EFI runtime | |
324 | * section and thus still be available when the OS is running | |
325 | */ | |
3c63db9c AG |
326 | #define __efi_runtime_data __attribute__ ((section ("efi_runtime_data"))) |
327 | #define __efi_runtime __attribute__ ((section ("efi_runtime_text"))) | |
bee91169 | 328 | |
80a4800e AG |
329 | /* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region |
330 | * to make it available at runtime */ | |
331 | void efi_add_runtime_mmio(void *mmio_ptr, u64 len); | |
332 | ||
333 | /* Boards may provide the functions below to implement RTS functionality */ | |
334 | ||
3c63db9c | 335 | void __efi_runtime EFIAPI efi_reset_system( |
80a4800e AG |
336 | enum efi_reset_type reset_type, |
337 | efi_status_t reset_status, | |
338 | unsigned long data_size, void *reset_data); | |
339 | void efi_reset_system_init(void); | |
340 | ||
3c63db9c | 341 | efi_status_t __efi_runtime EFIAPI efi_get_time( |
80a4800e AG |
342 | struct efi_time *time, |
343 | struct efi_time_cap *capabilities); | |
344 | void efi_get_time_init(void); | |
345 | ||
623b3a57 HS |
346 | #ifdef CONFIG_CMD_BOOTEFI_SELFTEST |
347 | /* | |
348 | * Entry point for the tests of the EFI API. | |
349 | * It is called by 'bootefi selftest' | |
350 | */ | |
351 | efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle, | |
352 | struct efi_system_table *systab); | |
353 | #endif | |
354 | ||
ad644e7c RC |
355 | efi_status_t EFIAPI efi_get_variable(s16 *variable_name, |
356 | efi_guid_t *vendor, u32 *attributes, | |
357 | unsigned long *data_size, void *data); | |
358 | efi_status_t EFIAPI efi_get_next_variable( | |
359 | unsigned long *variable_name_size, | |
360 | s16 *variable_name, efi_guid_t *vendor); | |
361 | efi_status_t EFIAPI efi_set_variable(s16 *variable_name, | |
362 | efi_guid_t *vendor, u32 attributes, | |
363 | unsigned long data_size, void *data); | |
364 | ||
9975fe96 RC |
365 | void *efi_bootmgr_load(struct efi_device_path **device_path, |
366 | struct efi_device_path **file_path); | |
367 | ||
bee91169 AG |
368 | #else /* defined(EFI_LOADER) && !defined(CONFIG_SPL_BUILD) */ |
369 | ||
50149ea3 | 370 | /* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */ |
3c63db9c AG |
371 | #define __efi_runtime_data |
372 | #define __efi_runtime | |
97d01444 | 373 | static inline void efi_add_runtime_mmio(void *mmio_ptr, u64 len) { } |
50149ea3 | 374 | |
bee91169 AG |
375 | /* No loader configured, stub out EFI_ENTRY */ |
376 | static inline void efi_restore_gd(void) { } | |
c07ad7c0 AG |
377 | static inline void efi_set_bootdev(const char *dev, const char *devnr, |
378 | const char *path) { } | |
0efe1bcf | 379 | static inline void efi_net_set_dhcp_ack(void *pkt, int len) { } |
bee91169 | 380 | |
cd9e18de HS |
381 | #endif /* CONFIG_EFI_LOADER && !CONFIG_SPL_BUILD */ |
382 | ||
383 | #endif /* _EFI_LOADER_H */ |