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Tom Rinif739fcd2018-05-07 17:02:21 -04001/* SPDX-License-Identifier: GPL-2.0+ */
Alexander Grafcb149c62016-03-04 01:09:58 +01002/*
3 * EFI application loader
4 *
5 * Copyright (c) 2016 Alexander Graf
Alexander Grafcb149c62016-03-04 01:09:58 +01006 */
7
Heinrich Schuchardtcd9e18d2017-10-18 18:13:07 +02008#ifndef _EFI_LOADER_H
9#define _EFI_LOADER_H 1
10
Alexander Grafbee91162016-03-04 01:09:59 +010011#include <common.h>
Simon Glasse6f6f9e2020-05-10 11:39:58 -060012#include <blk.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060013#include <log.h>
Alexander Grafcb149c62016-03-04 01:09:58 +010014#include <part_efi.h>
15#include <efi_api.h>
AKASHI Takahirod9f33072020-04-21 09:38:38 +090016#include <image.h>
AKASHI Takahiro4540dab2020-04-14 11:51:44 +090017#include <pe.h>
Alexander Grafbee91162016-03-04 01:09:59 +010018
Simon Glasse6f6f9e2020-05-10 11:39:58 -060019struct blk_desc;
20
Simon Glassfdeb6f72019-09-25 08:11:32 -060021static inline int guidcmp(const void *g1, const void *g2)
22{
23 return memcmp(g1, g2, sizeof(efi_guid_t));
24}
25
Sughosh Ganu61e42d92019-12-29 00:01:04 +053026static inline void *guidcpy(void *dst, const void *src)
27{
28 return memcpy(dst, src, sizeof(efi_guid_t));
29}
30
Alexander Grafbee91162016-03-04 01:09:59 +010031/* No need for efi loader support in SPL */
Stephen Warren9b5e6392018-08-30 15:43:43 -060032#if CONFIG_IS_ENABLED(EFI_LOADER)
Alexander Grafbee91162016-03-04 01:09:59 +010033
Alexander Grafcb149c62016-03-04 01:09:58 +010034#include <linux/list.h>
AKASHI Takahiro593e17d2020-04-14 11:51:39 +090035#include <linux/oid_registry.h>
Alexander Grafcb149c62016-03-04 01:09:58 +010036
Heinrich Schuchardt4182a122018-06-28 12:45:32 +020037/* Maximum number of configuration tables */
38#define EFI_MAX_CONFIGURATION_TABLES 16
39
Heinrich Schuchardt4e6b5d62018-09-20 21:58:23 +020040/* GUID used by the root node */
41#define U_BOOT_GUID \
42 EFI_GUID(0xe61d73b9, 0xa384, 0x4acc, \
43 0xae, 0xab, 0x82, 0xe8, 0x28, 0xf3, 0x62, 0x8b)
AKASHI Takahiro23ad52f2019-09-12 13:52:35 +090044/* 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)
Heinrich Schuchardt19ecced2020-05-20 22:39:35 +020048/* 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)
Heinrich Schuchardt4e6b5d62018-09-20 21:58:23 +020052
Heinrich Schuchardt7a597252019-11-28 06:46:09 +010053/* Use internal device tree when starting UEFI application */
Heinrich Schuchardtf64f2232019-12-08 01:07:01 +010054#define EFI_FDT_USE_INTERNAL NULL
Heinrich Schuchardt7a597252019-11-28 06:46:09 +010055
AKASHI Takahiroa2a4bc32019-04-16 13:24:20 +090056/* Root node */
57extern efi_handle_t efi_root;
58
Heinrich Schuchardt15b1bf12020-03-19 18:21:58 +000059/* Set to EFI_SUCCESS when initialized */
60extern efi_status_t efi_obj_list_initialized;
61
Heinrich Schuchardtfccd3d92020-11-12 21:26:28 +010062/* Flag used by the selftest to avoid detaching devices in ExitBootServices() */
63extern bool efi_st_keep_devices;
64
Heinrich Schuchardt11078bb2020-03-19 15:16:31 +010065/* EFI system partition */
66extern struct efi_system_partition {
67 enum if_type if_type;
68 int devnum;
69 u8 part;
70} efi_system_partition;
71
Rob Clarkc160d2f2017-07-27 08:04:18 -040072int __efi_entry_check(void);
73int __efi_exit_check(void);
Heinrich Schuchardtae0bd3a2017-08-18 17:45:16 +020074const char *__efi_nesting(void);
Rob Clarkaf65db82017-07-27 08:04:19 -040075const char *__efi_nesting_inc(void);
76const char *__efi_nesting_dec(void);
Rob Clarkc160d2f2017-07-27 08:04:18 -040077
Rob Clarka095aad2017-07-27 08:04:17 -040078/*
79 * Enter the u-boot world from UEFI:
80 */
Alexander Grafbee91162016-03-04 01:09:59 +010081#define EFI_ENTRY(format, ...) do { \
Rob Clarkc160d2f2017-07-27 08:04:18 -040082 assert(__efi_entry_check()); \
Rob Clarkaf65db82017-07-27 08:04:19 -040083 debug("%sEFI: Entry %s(" format ")\n", __efi_nesting_inc(), \
84 __func__, ##__VA_ARGS__); \
Alexander Grafbee91162016-03-04 01:09:59 +010085 } while(0)
Alexander Grafbee91162016-03-04 01:09:59 +010086
Rob Clarka095aad2017-07-27 08:04:17 -040087/*
88 * Exit the u-boot world back to UEFI:
89 */
Rob Clark804b1d72017-07-24 10:31:52 -040090#define EFI_EXIT(ret) ({ \
xypron.glpk@gmx.dec81883d2017-08-17 18:57:36 +020091 typeof(ret) _r = ret; \
Rob Clarkaf65db82017-07-27 08:04:19 -040092 debug("%sEFI: Exit: %s: %u\n", __efi_nesting_dec(), \
xypron.glpk@gmx.dec81883d2017-08-17 18:57:36 +020093 __func__, (u32)((uintptr_t) _r & ~EFI_ERROR_MASK)); \
Rob Clarkc160d2f2017-07-27 08:04:18 -040094 assert(__efi_exit_check()); \
95 _r; \
Rob Clark804b1d72017-07-24 10:31:52 -040096 })
Alexander Grafbee91162016-03-04 01:09:59 +010097
Rob Clarka095aad2017-07-27 08:04:17 -040098/*
Heinrich Schuchardtea630ce2017-09-15 10:06:10 +020099 * Call non-void UEFI function from u-boot and retrieve return value:
Rob Clarka095aad2017-07-27 08:04:17 -0400100 */
Heinrich Schuchardtea630ce2017-09-15 10:06:10 +0200101#define EFI_CALL(exp) ({ \
102 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
103 assert(__efi_exit_check()); \
104 typeof(exp) _r = exp; \
105 assert(__efi_entry_check()); \
106 debug("%sEFI: %lu returned by %s\n", __efi_nesting_dec(), \
107 (unsigned long)((uintptr_t)_r & ~EFI_ERROR_MASK), #exp); \
108 _r; \
109})
110
111/*
112 * Call void UEFI function from u-boot:
113 */
114#define EFI_CALL_VOID(exp) do { \
Rob Clarkaf65db82017-07-27 08:04:19 -0400115 debug("%sEFI: Call: %s\n", __efi_nesting_inc(), #exp); \
Rob Clarkc160d2f2017-07-27 08:04:18 -0400116 assert(__efi_exit_check()); \
Rob Clarka095aad2017-07-27 08:04:17 -0400117 exp; \
Rob Clarkc160d2f2017-07-27 08:04:18 -0400118 assert(__efi_entry_check()); \
Rob Clarkaf65db82017-07-27 08:04:19 -0400119 debug("%sEFI: Return From: %s\n", __efi_nesting_dec(), #exp); \
Rob Clarka095aad2017-07-27 08:04:17 -0400120 } while(0)
121
Heinrich Schuchardtae0bd3a2017-08-18 17:45:16 +0200122/*
Heinrich Schuchardtd5504142018-01-11 08:16:01 +0100123 * Write an indented message with EFI prefix
Heinrich Schuchardtae0bd3a2017-08-18 17:45:16 +0200124 */
Heinrich Schuchardtd5504142018-01-11 08:16:01 +0100125#define EFI_PRINT(format, ...) ({ \
126 debug("%sEFI: " format, __efi_nesting(), \
127 ##__VA_ARGS__); \
Heinrich Schuchardtae0bd3a2017-08-18 17:45:16 +0200128 })
129
Alexander Graf89aea432018-04-23 07:59:47 +0200130#ifdef CONFIG_SYS_CACHELINE_SIZE
131#define EFI_CACHELINE_SIZE CONFIG_SYS_CACHELINE_SIZE
132#else
133/* Just use the greatest cache flush alignment requirement I'm aware of */
134#define EFI_CACHELINE_SIZE 128
135#endif
136
Heinrich Schuchardt1fcb7ea2018-07-02 12:53:55 +0200137/* Key identifying current memory map */
138extern efi_uintn_t efi_memory_map_key;
139
Alexander Graf50149ea2016-03-04 01:10:01 +0100140extern struct efi_runtime_services efi_runtime_services;
Alexander Grafbee91162016-03-04 01:09:59 +0100141extern struct efi_system_table systab;
142
Heinrich Schuchardtebb4dd52017-10-26 19:25:59 +0200143extern struct efi_simple_text_output_protocol efi_con_out;
Heinrich Schuchardt3e603ec2018-09-08 10:20:10 +0200144extern struct efi_simple_text_input_protocol efi_con_in;
Heinrich Schuchardtebb4dd52017-10-26 19:25:59 +0200145extern struct efi_console_control_protocol efi_console_control;
xypron.glpk@gmx.decc5b7082017-07-11 22:06:25 +0200146extern const struct efi_device_path_to_text_protocol efi_device_path_to_text;
Leif Lindholme70f8df2018-03-09 17:43:21 +0100147/* implementation of the EFI_DEVICE_PATH_UTILITIES_PROTOCOL */
148extern const struct efi_device_path_utilities_protocol
149 efi_device_path_utilities;
Heinrich Schuchardtb1b782d2019-05-16 18:19:00 +0200150/* current version of the EFI_UNICODE_COLLATION_PROTOCOL */
Heinrich Schuchardt0bc4b0d2018-09-04 19:34:58 +0200151extern const struct efi_unicode_collation_protocol
Heinrich Schuchardt95ab3812019-05-16 07:52:58 +0200152 efi_unicode_collation_protocol2;
AKASHI Takahirocb728e52019-01-21 12:13:00 +0900153extern const struct efi_hii_config_routing_protocol efi_hii_config_routing;
154extern const struct efi_hii_config_access_protocol efi_hii_config_access;
Leif Lindholmc9bfb222019-01-21 12:12:57 +0900155extern const struct efi_hii_database_protocol efi_hii_database;
156extern const struct efi_hii_string_protocol efi_hii_string;
Alexander Grafc1311ad2016-03-04 01:10:00 +0100157
Rob Clarkadae4312017-09-13 18:05:30 -0400158uint16_t *efi_dp_str(struct efi_device_path *dp);
159
Heinrich Schuchardt4e6b5d62018-09-20 21:58:23 +0200160/* GUID of the U-Boot root node */
161extern const efi_guid_t efi_u_boot_guid;
AKASHI Takahiro23ad52f2019-09-12 13:52:35 +0900162#ifdef CONFIG_SANDBOX
163/* GUID of U-Boot host device on sandbox */
164extern const efi_guid_t efi_guid_host_dev;
165#endif
Heinrich Schuchardtb3dd14b2018-01-19 20:24:45 +0100166/* GUID of the EFI_BLOCK_IO_PROTOCOL */
167extern const efi_guid_t efi_block_io_guid;
Rob Clark9975fe92017-09-13 18:05:38 -0400168extern const efi_guid_t efi_global_variable_guid;
Alexander Grafc1311ad2016-03-04 01:10:00 +0100169extern const efi_guid_t efi_guid_console_control;
Alexander Grafcb149c62016-03-04 01:09:58 +0100170extern const efi_guid_t efi_guid_device_path;
Heinrich Schuchardtf0959db2018-01-11 08:16:02 +0100171/* GUID of the EFI_DRIVER_BINDING_PROTOCOL */
172extern const efi_guid_t efi_guid_driver_binding_protocol;
Heinrich Schuchardta3a28f52018-02-18 15:17:51 +0100173/* event group ExitBootServices() invoked */
174extern const efi_guid_t efi_guid_event_group_exit_boot_services;
175/* event group SetVirtualAddressMap() invoked */
176extern const efi_guid_t efi_guid_event_group_virtual_address_change;
177/* event group memory map changed */
178extern const efi_guid_t efi_guid_event_group_memory_map_change;
179/* event group boot manager about to boot */
180extern const efi_guid_t efi_guid_event_group_ready_to_boot;
181/* event group ResetSystem() invoked (before ExitBootServices) */
182extern const efi_guid_t efi_guid_event_group_reset_system;
Heinrich Schuchardtbc4f9132018-03-03 15:29:03 +0100183/* GUID of the device tree table */
184extern const efi_guid_t efi_guid_fdt;
Alexander Grafcb149c62016-03-04 01:09:58 +0100185extern const efi_guid_t efi_guid_loaded_image;
AKASHI Takahirobc8fc322019-03-27 13:40:32 +0900186extern const efi_guid_t efi_guid_loaded_image_device_path;
xypron.glpk@gmx.decc5b7082017-07-11 22:06:25 +0200187extern const efi_guid_t efi_guid_device_path_to_text_protocol;
Rob Clark2a920802017-09-13 18:05:34 -0400188extern const efi_guid_t efi_simple_file_system_protocol_guid;
189extern const efi_guid_t efi_file_info_guid;
Heinrich Schuchardt9e6835e2018-04-04 15:42:11 +0200190/* GUID for file system information */
191extern const efi_guid_t efi_file_system_info_guid;
Leif Lindholme70f8df2018-03-09 17:43:21 +0100192extern const efi_guid_t efi_guid_device_path_utilities_protocol;
Heinrich Schuchardtb1b782d2019-05-16 18:19:00 +0200193/* GUID of the deprecated Unicode collation protocol */
194extern const efi_guid_t efi_guid_unicode_collation_protocol;
Heinrich Schuchardtb6f11092020-12-04 03:33:41 +0100195/* GUIDs of the Load File and Load File2 protocol */
196extern const efi_guid_t efi_guid_load_file_protocol;
197extern const efi_guid_t efi_guid_load_file2_protocol;
Heinrich Schuchardt0bc4b0d2018-09-04 19:34:58 +0200198/* GUID of the Unicode collation protocol */
Heinrich Schuchardt95ab3812019-05-16 07:52:58 +0200199extern const efi_guid_t efi_guid_unicode_collation_protocol2;
AKASHI Takahirocb728e52019-01-21 12:13:00 +0900200extern const efi_guid_t efi_guid_hii_config_routing_protocol;
201extern const efi_guid_t efi_guid_hii_config_access_protocol;
Leif Lindholmc9bfb222019-01-21 12:12:57 +0900202extern const efi_guid_t efi_guid_hii_database_protocol;
203extern const efi_guid_t efi_guid_hii_string_protocol;
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900204/* GUIDs for authentication */
205extern const efi_guid_t efi_guid_image_security_database;
206extern const efi_guid_t efi_guid_sha256;
207extern const efi_guid_t efi_guid_cert_x509;
208extern const efi_guid_t efi_guid_cert_x509_sha256;
AKASHI Takahiro767f6ee2020-04-14 11:51:41 +0900209extern const efi_guid_t efi_guid_cert_type_pkcs7;
Alexander Grafcb149c62016-03-04 01:09:58 +0100210
Sughosh Ganu33c37d92019-12-29 00:01:06 +0530211/* GUID of RNG protocol */
212extern const efi_guid_t efi_guid_rng_protocol;
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900213/* GUID of capsule update result */
214extern const efi_guid_t efi_guid_capsule_report;
AKASHI Takahiro8d990262020-11-30 18:12:11 +0900215/* GUID of firmware management protocol */
216extern const efi_guid_t efi_guid_firmware_management_protocol;
Sughosh Ganu33c37d92019-12-29 00:01:06 +0530217
Alexander Graf50149ea2016-03-04 01:10:01 +0100218extern unsigned int __efi_runtime_start, __efi_runtime_stop;
219extern unsigned int __efi_runtime_rel_start, __efi_runtime_rel_stop;
220
Heinrich Schuchardt1f1075c2019-05-21 17:51:35 +0200221/**
222 * struct efi_open_protocol_info_item - open protocol info item
223 *
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100224 * When a protocol is opened a open protocol info entry is created.
225 * These are maintained in a list.
Heinrich Schuchardt1f1075c2019-05-21 17:51:35 +0200226 *
227 * @link: link to the list of open protocol info entries of a protocol
228 * @info: information about the opening of a protocol
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100229 */
230struct efi_open_protocol_info_item {
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100231 struct list_head link;
232 struct efi_open_protocol_info_entry info;
233};
234
Heinrich Schuchardt1f1075c2019-05-21 17:51:35 +0200235/**
236 * struct efi_handler - single protocol interface of a handle
237 *
Alexander Grafbee91162016-03-04 01:09:59 +0100238 * When the UEFI payload wants to open a protocol on an object to get its
239 * interface (usually a struct with callback functions), this struct maps the
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100240 * protocol GUID to the respective protocol interface
Heinrich Schuchardt1f1075c2019-05-21 17:51:35 +0200241 *
242 * @link: link to the list of protocols of a handle
243 * @guid: GUID of the protocol
244 * @protocol_interface: protocol interface
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100245 * @open_infos: link to the list of open protocol info items
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100246 */
Alexander Grafbee91162016-03-04 01:09:59 +0100247struct efi_handler {
Heinrich Schuchardt69fb6b12017-11-26 14:05:17 +0100248 struct list_head link;
Alexander Grafbee91162016-03-04 01:09:59 +0100249 const efi_guid_t *guid;
xypron.glpk@gmx.deb5349f72017-07-11 22:06:14 +0200250 void *protocol_interface;
Heinrich Schuchardtfe1599d2018-01-11 08:15:57 +0100251 struct list_head open_infos;
Alexander Grafbee91162016-03-04 01:09:59 +0100252};
253
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200254/**
Heinrich Schuchardtcd73aba2019-05-01 14:20:18 +0200255 * enum efi_object_type - type of EFI object
256 *
257 * In UnloadImage we must be able to identify if the handle relates to a
258 * started image.
259 */
260enum efi_object_type {
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100261 /** @EFI_OBJECT_TYPE_UNDEFINED: undefined image type */
Heinrich Schuchardtcd73aba2019-05-01 14:20:18 +0200262 EFI_OBJECT_TYPE_UNDEFINED = 0,
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100263 /** @EFI_OBJECT_TYPE_U_BOOT_FIRMWARE: U-Boot firmware */
Heinrich Schuchardt84a918e2019-05-05 16:55:06 +0200264 EFI_OBJECT_TYPE_U_BOOT_FIRMWARE,
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100265 /** @EFI_OBJECT_TYPE_LOADED_IMAGE: loaded image (not started) */
Heinrich Schuchardtcd73aba2019-05-01 14:20:18 +0200266 EFI_OBJECT_TYPE_LOADED_IMAGE,
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100267 /** @EFI_OBJECT_TYPE_STARTED_IMAGE: started image */
Heinrich Schuchardtcd73aba2019-05-01 14:20:18 +0200268 EFI_OBJECT_TYPE_STARTED_IMAGE,
269};
270
271/**
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200272 * struct efi_object - dereferenced EFI handle
Alexander Grafbee91162016-03-04 01:09:59 +0100273 *
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200274 * @link: pointers to put the handle into a linked list
275 * @protocols: linked list with the protocol interfaces installed on this
276 * handle
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100277 * @type: image type if the handle relates to an image
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200278 *
279 * UEFI offers a flexible and expandable object model. The objects in the UEFI
280 * API are devices, drivers, and loaded images. struct efi_object is our storage
281 * structure for these objects.
282 *
283 * When including this structure into a larger structure always put it first so
284 * that when deleting a handle the whole encompassing structure can be freed.
285 *
286 * A pointer to this structure is referred to as a handle. Typedef efi_handle_t
287 * has been created for such pointers.
Alexander Grafbee91162016-03-04 01:09:59 +0100288 */
289struct efi_object {
290 /* Every UEFI object is part of a global object list */
291 struct list_head link;
Heinrich Schuchardt69fb6b12017-11-26 14:05:17 +0100292 /* The list of protocols */
293 struct list_head protocols;
Heinrich Schuchardtcd73aba2019-05-01 14:20:18 +0200294 enum efi_object_type type;
Alexander Grafbee91162016-03-04 01:09:59 +0100295};
296
AKASHI Takahiro4540dab2020-04-14 11:51:44 +0900297enum efi_image_auth_status {
298 EFI_IMAGE_AUTH_FAILED = 0,
299 EFI_IMAGE_AUTH_PASSED,
300};
301
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200302/**
Heinrich Schuchardtc9828742018-09-23 17:21:51 +0200303 * struct efi_loaded_image_obj - handle of a loaded image
Heinrich Schuchardtd39646a2018-09-26 05:27:56 +0200304 *
305 * @header: EFI object header
Heinrich Schuchardt556d8dc2019-04-30 17:57:30 +0200306 * @exit_status: exit status passed to Exit()
307 * @exit_data_size: exit data size passed to Exit()
308 * @exit_data: exit data passed to Exit()
Heinrich Schuchardt0ce3fb52020-12-28 22:42:51 +0100309 * @exit_jmp: long jump buffer for returning from started image
Heinrich Schuchardtd39646a2018-09-26 05:27:56 +0200310 * @entry: entry address of the relocated image
Heinrich Schuchardt0ce3fb52020-12-28 22:42:51 +0100311 * @image_type: indicates if the image is an applicition or a driver
312 * @auth_status: indicates if the image is authenticated
Heinrich Schuchardtc9828742018-09-23 17:21:51 +0200313 */
314struct efi_loaded_image_obj {
Heinrich Schuchardtd39646a2018-09-26 05:27:56 +0200315 struct efi_object header;
Heinrich Schuchardtf8212f02020-12-28 23:24:40 +0100316 efi_status_t *exit_status;
Heinrich Schuchardt556d8dc2019-04-30 17:57:30 +0200317 efi_uintn_t *exit_data_size;
318 u16 **exit_data;
Heinrich Schuchardtf8212f02020-12-28 23:24:40 +0100319 struct jmp_buf_data *exit_jmp;
Heinrich Schuchardtc9828742018-09-23 17:21:51 +0200320 EFIAPI efi_status_t (*entry)(efi_handle_t image_handle,
321 struct efi_system_table *st);
Heinrich Schuchardt126a43f2019-05-01 20:07:04 +0200322 u16 image_type;
AKASHI Takahiro4540dab2020-04-14 11:51:44 +0900323 enum efi_image_auth_status auth_status;
Heinrich Schuchardtc9828742018-09-23 17:21:51 +0200324};
325
326/**
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200327 * struct efi_event
328 *
Heinrich Schuchardt43bce442018-02-18 15:17:50 +0100329 * @link: Link to list of all events
Heinrich Schuchardt7a69e972019-06-05 21:00:39 +0200330 * @queue_link: Link to the list of queued events
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200331 * @type: Type of event, see efi_create_event
332 * @notify_tpl: Task priority level of notifications
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100333 * @notify_function: Function to call when the event is triggered
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200334 * @notify_context: Data to be passed to the notify function
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100335 * @group: Event group
Heinrich Schuchardt43bce442018-02-18 15:17:50 +0100336 * @trigger_time: Period of the timer
337 * @trigger_next: Next time to trigger the timer
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200338 * @trigger_type: Type of timer, see efi_set_timer
Heinrich Schuchardt43bce442018-02-18 15:17:50 +0100339 * @is_signaled: The event occurred. The event is in the signaled state.
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200340 */
341struct efi_event {
Heinrich Schuchardt43bce442018-02-18 15:17:50 +0100342 struct list_head link;
Heinrich Schuchardt7a69e972019-06-05 21:00:39 +0200343 struct list_head queue_link;
xypron.glpk@gmx.deb521d292017-07-19 19:22:34 +0200344 uint32_t type;
Heinrich Schuchardt152cade2017-11-06 21:17:47 +0100345 efi_uintn_t notify_tpl;
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200346 void (EFIAPI *notify_function)(struct efi_event *event, void *context);
347 void *notify_context;
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100348 const efi_guid_t *group;
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200349 u64 trigger_next;
350 u64 trigger_time;
xypron.glpk@gmx.deb521d292017-07-19 19:22:34 +0200351 enum efi_timer_delay trigger_type;
Heinrich Schuchardte190e892017-10-04 15:03:24 +0200352 bool is_signaled;
xypron.glpk@gmx.dec6841592017-07-18 20:17:18 +0200353};
354
Alexander Grafbee91162016-03-04 01:09:59 +0100355/* This list contains all UEFI objects we know of */
356extern struct list_head efi_obj_list;
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100357/* List of all events */
358extern struct list_head efi_events;
Alexander Grafbee91162016-03-04 01:09:59 +0100359
Heinrich Schuchardtab15d412019-05-04 17:27:54 +0200360/**
Heinrich Schuchardtf09cea32019-05-21 18:19:01 +0200361 * struct efi_protocol_notification - handle for notified protocol
362 *
363 * When a protocol interface is installed for which an event was registered with
364 * the RegisterProtocolNotify() service this structure is used to hold the
365 * handle on which the protocol interface was installed.
366 *
367 * @link: link to list of all handles notified for this event
368 * @handle: handle on which the notified protocol interface was installed
369 */
370struct efi_protocol_notification {
371 struct list_head link;
372 efi_handle_t handle;
373};
374
375/**
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100376 * struct efi_register_notify_event - event registered by
377 * RegisterProtocolNotify()
Heinrich Schuchardtab15d412019-05-04 17:27:54 +0200378 *
379 * The address of this structure serves as registration value.
380 *
Heinrich Schuchardtf09cea32019-05-21 18:19:01 +0200381 * @link: link to list of all registered events
382 * @event: registered event. The same event may registered for multiple
383 * GUIDs.
384 * @protocol: protocol for which the event is registered
385 * @handles: linked list of all handles on which the notified protocol was
386 * installed
Heinrich Schuchardtab15d412019-05-04 17:27:54 +0200387 */
388struct efi_register_notify_event {
389 struct list_head link;
390 struct efi_event *event;
391 efi_guid_t protocol;
Heinrich Schuchardtf09cea32019-05-21 18:19:01 +0200392 struct list_head handles;
Heinrich Schuchardtab15d412019-05-04 17:27:54 +0200393};
394
395/* List of all events registered by RegisterProtocolNotify() */
396extern struct list_head efi_register_notify_events;
397
AKASHI Takahiro056b45b2018-12-30 15:16:55 +0100398/* Initialize efi execution environment */
399efi_status_t efi_init_obj_list(void);
Heinrich Schuchardtf64f2232019-12-08 01:07:01 +0100400/* Install device tree */
401efi_status_t efi_install_fdt(void *fdt);
Heinrich Schuchardtf9ceb6a2019-12-07 20:51:06 +0100402/* Run loaded UEFI image */
403efi_status_t efi_run_image(void *source_buffer, efi_uintn_t source_size);
Heinrich Schuchardt88192092019-06-20 13:52:16 +0200404/* Initialize variable services */
405efi_status_t efi_init_variables(void);
Heinrich Schuchardt29018ab2019-06-20 15:25:48 +0200406/* Notify ExitBootServices() is called */
407void efi_variables_boot_exit_notify(void);
Heinrich Schuchardt4e6b5d62018-09-20 21:58:23 +0200408/* Called by bootefi to initialize root node */
409efi_status_t efi_root_node_register(void);
Heinrich Schuchardt640adad2018-06-28 12:45:31 +0200410/* Called by bootefi to initialize runtime */
411efi_status_t efi_initialize_system_table(void);
Heinrich Schuchardt7f951042019-07-05 17:42:16 +0200412/* efi_runtime_detach() - detach unimplemented runtime functions */
413void efi_runtime_detach(void);
Heinrich Schuchardta44d2a22020-03-24 18:05:22 +0100414/* efi_convert_pointer() - convert pointer to virtual address */
415efi_status_t EFIAPI efi_convert_pointer(efi_uintn_t debug_disposition,
416 void **address);
Heinrich Schuchardt94686f62020-12-13 10:30:24 +0100417/* Carve out DT reserved memory ranges */
418void efi_carve_out_dt_rsv(void *fdt);
xypron.glpk@gmx.de91be9a72017-07-18 20:17:22 +0200419/* Called by bootefi to make console interface available */
Heinrich Schuchardt6f566c22018-10-02 06:08:26 +0200420efi_status_t efi_console_register(void);
Alexander Graf2a22d052016-03-04 01:10:02 +0100421/* Called by bootefi to make all disk storage accessible as EFI objects */
Heinrich Schuchardtdf9cf562018-02-09 20:55:47 +0100422efi_status_t efi_disk_register(void);
Heinrich Schuchardtb59c13d2020-09-25 12:50:19 +0200423/* Called by efi_init_obj_list() to install EFI_RNG_PROTOCOL */
424efi_status_t efi_rng_register(void);
Ilias Apalodimasc1c02102020-11-11 11:18:11 +0200425/* Called by efi_init_obj_list() to install EFI_TCG2_PROTOCOL */
426efi_status_t efi_tcg2_register(void);
Heinrich Schuchardt64e4db02018-01-19 20:24:47 +0100427/* Create handles and protocols for the partitions of a block device */
428int efi_disk_create_partitions(efi_handle_t parent, struct blk_desc *desc,
429 const char *if_typename, int diskid,
430 const char *pdevname);
AKASHI Takahiro41fd5062020-04-27 18:48:20 +0900431/* Check if it is EFI system partition */
432bool efi_disk_is_system_part(efi_handle_t handle);
Alexander Grafbe8d3242016-03-15 18:38:21 +0100433/* Called by bootefi to make GOP (graphical) interface available */
Heinrich Schuchardt80ea9b02018-03-03 15:28:55 +0100434efi_status_t efi_gop_register(void);
Alexander Graf0efe1bc2016-05-06 21:01:01 +0200435/* Called by bootefi to make the network interface available */
Heinrich Schuchardt075d4252018-03-03 15:28:56 +0100436efi_status_t efi_net_register(void);
Heinrich Schuchardtb3d60902017-10-18 18:13:04 +0200437/* Called by bootefi to make the watchdog available */
Heinrich Schuchardtd7b181d2018-03-03 15:28:57 +0100438efi_status_t efi_watchdog_register(void);
Ilias Apalodimasec80b472020-02-21 09:55:45 +0200439efi_status_t efi_initrd_register(void);
Alexander Grafe663b352016-08-19 01:23:29 +0200440/* Called by bootefi to make SMBIOS tables available */
Simon Glass0864c562018-05-16 09:42:19 -0600441/**
Bin Meng86df34d2018-06-27 20:38:03 -0700442 * efi_acpi_register() - write out ACPI tables
443 *
444 * Called by bootefi to make ACPI tables available
445 *
446 * @return 0 if OK, -ENOMEM if no memory is available for the tables
447 */
448efi_status_t efi_acpi_register(void);
449/**
Simon Glass0864c562018-05-16 09:42:19 -0600450 * efi_smbios_register() - write out SMBIOS tables
451 *
452 * Called by bootefi to make SMBIOS tables available
453 *
454 * @return 0 if OK, -ENOMEM if no memory is available for the tables
455 */
Heinrich Schuchardt76571522018-03-03 15:28:54 +0100456efi_status_t efi_smbios_register(void);
Alexander Graf0efe1bc2016-05-06 21:01:01 +0200457
Rob Clark2a920802017-09-13 18:05:34 -0400458struct efi_simple_file_system_protocol *
459efi_fs_from_path(struct efi_device_path *fp);
460
Alexander Graf0efe1bc2016-05-06 21:01:01 +0200461/* Called by networking code to memorize the dhcp ack package */
462void efi_net_set_dhcp_ack(void *pkt, int len);
Heinrich Schuchardtb3d60902017-10-18 18:13:04 +0200463/* Called by efi_set_watchdog_timer to reset the timer */
464efi_status_t efi_set_watchdog(unsigned long timeout);
Alexander Graf0efe1bc2016-05-06 21:01:01 +0200465
Alexander Grafbee91162016-03-04 01:09:59 +0100466/* Called from places to check whether a timer expired */
467void efi_timer_check(void);
Heinrich Schuchardt5dad05a2021-01-12 12:40:32 +0100468/* Check if a buffer contains a PE-COFF image */
469efi_status_t efi_check_pe(void *buffer, size_t size, void **nt_header);
Alexander Grafbee91162016-03-04 01:09:59 +0100470/* PE loader implementation */
AKASHI Takahiro4540dab2020-04-14 11:51:44 +0900471efi_status_t efi_load_pe(struct efi_loaded_image_obj *handle,
472 void *efi, size_t efi_size,
Heinrich Schuchardt8f7e2b22018-12-26 12:49:09 +0100473 struct efi_loaded_image *loaded_image_info);
Alexander Grafbee91162016-03-04 01:09:59 +0100474/* Called once to store the pristine gd pointer */
475void efi_save_gd(void);
Rob Clarkc160d2f2017-07-27 08:04:18 -0400476/* Special case handler for error/abort that just tries to dtrt to get
477 * back to u-boot world */
Alexander Grafbee91162016-03-04 01:09:59 +0100478void efi_restore_gd(void);
Alexander Graf50149ea2016-03-04 01:10:01 +0100479/* Call this to relocate the runtime section to an address space */
480void efi_runtime_relocate(ulong offset, struct efi_mem_desc *map);
Alexander Graf0f4060e2016-03-04 01:10:14 +0100481/* Call this to set the current device name */
Heinrich Schuchardt5f595182021-01-12 12:46:24 +0100482void efi_set_bootdev(const char *dev, const char *devnr, const char *path,
483 void *buffer, size_t buffer_size);
Heinrich Schuchardt44549d62017-11-26 14:05:23 +0100484/* Add a new object to the object list. */
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200485void efi_add_handle(efi_handle_t obj);
Heinrich Schuchardt2edab5e2017-10-26 19:25:49 +0200486/* Create handle */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100487efi_status_t efi_create_handle(efi_handle_t *handle);
Heinrich Schuchardt678e03a2017-12-04 18:03:02 +0100488/* Delete handle */
Heinrich Schuchardtfae01182018-09-26 05:27:55 +0200489void efi_delete_handle(efi_handle_t obj);
Heinrich Schuchardt1b681532017-11-06 21:17:50 +0100490/* Call this to validate a handle and find the EFI object for it */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100491struct efi_object *efi_search_obj(const efi_handle_t handle);
AKASHI Takahirod7e0b012019-03-05 14:53:31 +0900492/* Load image */
493efi_status_t EFIAPI efi_load_image(bool boot_policy,
494 efi_handle_t parent_image,
495 struct efi_device_path *file_path,
496 void *source_buffer,
497 efi_uintn_t source_size,
498 efi_handle_t *image_handle);
Heinrich Schuchardtf69d63f2018-12-26 13:28:09 +0100499/* Start image */
500efi_status_t EFIAPI efi_start_image(efi_handle_t image_handle,
501 efi_uintn_t *exit_data_size,
502 u16 **exit_data);
AKASHI Takahirod7e0b012019-03-05 14:53:31 +0900503/* Unload image */
504efi_status_t EFIAPI efi_unload_image(efi_handle_t image_handle);
Heinrich Schuchardt3f79a2b2017-10-26 19:25:53 +0200505/* Find a protocol on a handle */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100506efi_status_t efi_search_protocol(const efi_handle_t handle,
Heinrich Schuchardt3f79a2b2017-10-26 19:25:53 +0200507 const efi_guid_t *protocol_guid,
508 struct efi_handler **handler);
509/* Install new protocol on a handle */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100510efi_status_t efi_add_protocol(const efi_handle_t handle,
511 const efi_guid_t *protocol,
Heinrich Schuchardt3f79a2b2017-10-26 19:25:53 +0200512 void *protocol_interface);
Heinrich Schuchardtf9ad2402020-01-10 12:33:59 +0100513/* Open protocol */
514efi_status_t efi_protocol_open(struct efi_handler *handler,
515 void **protocol_interface, void *agent_handle,
516 void *controller_handle, uint32_t attributes);
517
Heinrich Schuchardt3f79a2b2017-10-26 19:25:53 +0200518/* Delete protocol from a handle */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100519efi_status_t efi_remove_protocol(const efi_handle_t handle,
520 const efi_guid_t *protocol,
Heinrich Schuchardt3f79a2b2017-10-26 19:25:53 +0200521 void *protocol_interface);
522/* Delete all protocols from a handle */
Heinrich Schuchardt2074f702018-01-11 08:16:09 +0100523efi_status_t efi_remove_all_protocols(const efi_handle_t handle);
Heinrich Schuchardt7657ae12019-04-12 06:59:49 +0200524/* Install multiple protocol interfaces */
525efi_status_t EFIAPI efi_install_multiple_protocol_interfaces
526 (efi_handle_t *handle, ...);
AKASHI Takahirob51ec632020-03-17 11:12:36 +0900527/* Get handles that support a given protocol */
528efi_status_t EFIAPI efi_locate_handle_buffer(
529 enum efi_locate_search_type search_type,
530 const efi_guid_t *protocol, void *search_key,
531 efi_uintn_t *no_handles, efi_handle_t **buffer);
532/* Close an previously opened protocol interface */
533efi_status_t EFIAPI efi_close_protocol(efi_handle_t handle,
534 const efi_guid_t *protocol,
535 efi_handle_t agent_handle,
536 efi_handle_t controller_handle);
537/* Open a protocol interface */
538efi_status_t EFIAPI efi_handle_protocol(efi_handle_t handle,
539 const efi_guid_t *protocol,
540 void **protocol_interface);
xypron.glpk@gmx.de49deb452017-07-18 20:17:20 +0200541/* Call this to create an event */
Heinrich Schuchardt152cade2017-11-06 21:17:47 +0100542efi_status_t efi_create_event(uint32_t type, efi_uintn_t notify_tpl,
xypron.glpk@gmx.de49deb452017-07-18 20:17:20 +0200543 void (EFIAPI *notify_function) (
544 struct efi_event *event,
545 void *context),
Heinrich Schuchardtb095f3c2018-02-18 15:17:52 +0100546 void *notify_context, efi_guid_t *group,
547 struct efi_event **event);
xypron.glpk@gmx.debfc72462017-07-18 20:17:21 +0200548/* Call this to set a timer */
xypron.glpk@gmx.deb521d292017-07-19 19:22:34 +0200549efi_status_t efi_set_timer(struct efi_event *event, enum efi_timer_delay type,
xypron.glpk@gmx.debfc72462017-07-18 20:17:21 +0200550 uint64_t trigger_time);
xypron.glpk@gmx.de91be9a72017-07-18 20:17:22 +0200551/* Call this to signal an event */
Heinrich Schuchardt7eaa9002019-06-07 06:47:01 +0200552void efi_signal_event(struct efi_event *event);
Alexander Graf50149ea2016-03-04 01:10:01 +0100553
Rob Clark2a920802017-09-13 18:05:34 -0400554/* open file system: */
555struct efi_simple_file_system_protocol *efi_simple_file_system(
556 struct blk_desc *desc, int part, struct efi_device_path *dp);
557
558/* open file from device-path: */
559struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp);
560
Heinrich Schuchardtc3772ca2018-11-18 17:58:49 +0100561/**
562 * efi_size_in_pages() - convert size in bytes to size in pages
563 *
564 * This macro returns the number of EFI memory pages required to hold 'size'
565 * bytes.
566 *
567 * @size: size in bytes
568 * Return: size in pages
569 */
Heinrich Schuchardt0a7e5162021-01-17 07:52:09 +0100570#define efi_size_in_pages(size) (((size) + EFI_PAGE_MASK) >> EFI_PAGE_SHIFT)
Alexander Graf5d009952016-03-04 01:10:04 +0100571/* Generic EFI memory allocator, call this to get memory */
572void *efi_alloc(uint64_t len, int memory_type);
573/* More specific EFI memory allocator, called by EFI payloads */
Heinrich Schuchardtf5a2a932017-11-06 21:17:48 +0100574efi_status_t efi_allocate_pages(int type, int memory_type, efi_uintn_t pages,
Alexander Graf5d009952016-03-04 01:10:04 +0100575 uint64_t *memory);
Stefan Brünsb61d8572016-10-01 23:32:27 +0200576/* EFI memory free function. */
Heinrich Schuchardtf5a2a932017-11-06 21:17:48 +0100577efi_status_t efi_free_pages(uint64_t memory, efi_uintn_t pages);
Stefan Brünsead12742016-10-09 22:17:18 +0200578/* EFI memory allocator for small allocations */
Heinrich Schuchardtf5a2a932017-11-06 21:17:48 +0100579efi_status_t efi_allocate_pool(int pool_type, efi_uintn_t size,
Stefan Brünsead12742016-10-09 22:17:18 +0200580 void **buffer);
Stefan Brüns42417bc2016-10-09 22:17:26 +0200581/* EFI pool memory free function. */
582efi_status_t efi_free_pool(void *buffer);
Alexander Graf5d009952016-03-04 01:10:04 +0100583/* Returns the EFI memory map */
Heinrich Schuchardtf5a2a932017-11-06 21:17:48 +0100584efi_status_t efi_get_memory_map(efi_uintn_t *memory_map_size,
Alexander Graf5d009952016-03-04 01:10:04 +0100585 struct efi_mem_desc *memory_map,
Heinrich Schuchardtf5a2a932017-11-06 21:17:48 +0100586 efi_uintn_t *map_key,
587 efi_uintn_t *descriptor_size,
Alexander Graf5d009952016-03-04 01:10:04 +0100588 uint32_t *descriptor_version);
589/* Adds a range into the EFI memory map */
Michael Walle714497e2020-05-17 12:29:19 +0200590efi_status_t efi_add_memory_map(u64 start, u64 size, int memory_type);
Park, Aidenb5b9eff2019-09-03 17:43:43 +0000591/* Adds a conventional range into the EFI memory map */
592efi_status_t efi_add_conventional_memory_map(u64 ram_start, u64 ram_end,
593 u64 ram_top);
594
Heinrich Schuchardt05ef48a2018-01-21 19:29:30 +0100595/* Called by board init to initialize the EFI drivers */
Heinrich Schuchardt038782a2018-02-01 12:53:32 +0100596efi_status_t efi_driver_init(void);
Alexander Graf5d009952016-03-04 01:10:04 +0100597/* Called by board init to initialize the EFI memory map */
598int efi_memory_init(void);
Alexander Graf488bf122016-08-19 01:23:24 +0200599/* Adds new or overrides configuration table entry to the system table */
600efi_status_t efi_install_configuration_table(const efi_guid_t *guid, void *table);
Heinrich Schuchardt56d92882017-12-04 18:03:01 +0100601/* Sets up a loaded image */
Heinrich Schuchardtc9828742018-09-23 17:21:51 +0200602efi_status_t efi_setup_loaded_image(struct efi_device_path *device_path,
603 struct efi_device_path *file_path,
604 struct efi_loaded_image_obj **handle_ptr,
605 struct efi_loaded_image **info_ptr);
Heinrich Schuchardtc9a63f42018-04-05 11:56:21 +0200606/* Print information about all loaded images */
607void efi_print_image_infos(void *pc);
Alexander Graf5d009952016-03-04 01:10:04 +0100608
Alexander Graf51735ae2016-05-11 18:25:48 +0200609#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
610extern void *efi_bounce_buffer;
611#define EFI_LOADER_BOUNCE_BUFFER_SIZE (64 * 1024 * 1024)
612#endif
613
Rob Clarkb66c60d2017-09-13 18:05:28 -0400614
615struct efi_device_path *efi_dp_next(const struct efi_device_path *dp);
Heinrich Schuchardtff401d32017-10-26 19:25:48 +0200616int efi_dp_match(const struct efi_device_path *a,
617 const struct efi_device_path *b);
Rob Clarkb66c60d2017-09-13 18:05:28 -0400618struct efi_object *efi_dp_find_obj(struct efi_device_path *dp,
619 struct efi_device_path **rem);
Heinrich Schuchardtf6dd3f32018-04-16 07:59:08 +0200620/* get size of the first device path instance excluding end node */
621efi_uintn_t efi_dp_instance_size(const struct efi_device_path *dp);
622/* size of multi-instance device path excluding end node */
623efi_uintn_t efi_dp_size(const struct efi_device_path *dp);
Rob Clarkb66c60d2017-09-13 18:05:28 -0400624struct efi_device_path *efi_dp_dup(const struct efi_device_path *dp);
625struct efi_device_path *efi_dp_append(const struct efi_device_path *dp1,
626 const struct efi_device_path *dp2);
627struct efi_device_path *efi_dp_append_node(const struct efi_device_path *dp,
628 const struct efi_device_path *node);
Heinrich Schuchardt211314c2018-04-16 07:59:05 +0200629/* Create a device path node of given type, sub-type, length */
630struct efi_device_path *efi_dp_create_device_node(const u8 type,
631 const u8 sub_type,
632 const u16 length);
Heinrich Schuchardt3acef5d2018-04-16 07:59:09 +0200633/* Append device path instance */
634struct efi_device_path *efi_dp_append_instance(
635 const struct efi_device_path *dp,
636 const struct efi_device_path *dpi);
637/* Get next device path instance */
638struct efi_device_path *efi_dp_get_next_instance(struct efi_device_path **dp,
639 efi_uintn_t *size);
640/* Check if a device path contains muliple instances */
641bool efi_dp_is_multi_instance(const struct efi_device_path *dp);
Rob Clarkb66c60d2017-09-13 18:05:28 -0400642
Rob Clarkb66c60d2017-09-13 18:05:28 -0400643struct efi_device_path *efi_dp_from_part(struct blk_desc *desc, int part);
Heinrich Schuchardt98d48bd2018-01-19 20:24:46 +0100644/* Create a device node for a block device partition. */
645struct efi_device_path *efi_dp_part_node(struct blk_desc *desc, int part);
Rob Clarkb66c60d2017-09-13 18:05:28 -0400646struct efi_device_path *efi_dp_from_file(struct blk_desc *desc, int part,
647 const char *path);
648struct efi_device_path *efi_dp_from_eth(void);
Rob Clarkbf192732017-10-10 08:23:06 -0400649struct efi_device_path *efi_dp_from_mem(uint32_t mem_type,
650 uint64_t start_address,
651 uint64_t end_address);
Heinrich Schuchardt65436f92018-01-19 20:24:49 +0100652/* Determine the last device path node that is not the end node. */
653const struct efi_device_path *efi_dp_last_node(
654 const struct efi_device_path *dp);
Heinrich Schuchardt04298682018-01-19 20:24:37 +0100655efi_status_t efi_dp_split_file_path(struct efi_device_path *full_path,
656 struct efi_device_path **device_path,
657 struct efi_device_path **file_path);
AKASHI Takahirof1589ff2018-10-17 16:32:03 +0900658efi_status_t efi_dp_from_name(const char *dev, const char *devnr,
659 const char *path,
660 struct efi_device_path **device,
661 struct efi_device_path **file);
Heinrich Schuchardt5cad4a32020-08-23 10:49:46 +0200662ssize_t efi_dp_check_length(const struct efi_device_path *dp,
663 const size_t maxlen);
Rob Clarkb66c60d2017-09-13 18:05:28 -0400664
665#define EFI_DP_TYPE(_dp, _type, _subtype) \
666 (((_dp)->type == DEVICE_PATH_TYPE_##_type) && \
667 ((_dp)->sub_type == DEVICE_PATH_SUB_TYPE_##_subtype))
668
Alexander Graf50149ea2016-03-04 01:10:01 +0100669/*
670 * Use these to indicate that your code / data should go into the EFI runtime
671 * section and thus still be available when the OS is running
672 */
Alexander Graf7e21fbc2018-06-12 07:48:37 +0200673#define __efi_runtime_data __attribute__ ((section (".data.efi_runtime")))
674#define __efi_runtime __attribute__ ((section (".text.efi_runtime")))
Alexander Grafbee91162016-03-04 01:09:59 +0100675
AKASHI Takahiroe771b4b2019-06-05 13:21:38 +0900676/* Indicate supported runtime services */
677efi_status_t efi_init_runtime_supported(void);
678
Heinrich Schuchardta39f39c2018-07-29 09:49:04 +0200679/* Update CRC32 in table header */
680void __efi_runtime efi_update_table_header_crc32(struct efi_table_hdr *table);
681
Alexander Graf80a48002016-08-16 21:08:45 +0200682/* Call this with mmio_ptr as the _pointer_ to a pointer to an MMIO region
683 * to make it available at runtime */
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100684efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len);
Alexander Graf80a48002016-08-16 21:08:45 +0200685
686/* Boards may provide the functions below to implement RTS functionality */
687
Alexander Graf3c63db92016-10-14 13:45:30 +0200688void __efi_runtime EFIAPI efi_reset_system(
Alexander Graf80a48002016-08-16 21:08:45 +0200689 enum efi_reset_type reset_type,
690 efi_status_t reset_status,
691 unsigned long data_size, void *reset_data);
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100692
693/* Architecture specific initialization of the EFI subsystem */
694efi_status_t efi_reset_system_init(void);
Alexander Graf80a48002016-08-16 21:08:45 +0200695
Alexander Graf3c63db92016-10-14 13:45:30 +0200696efi_status_t __efi_runtime EFIAPI efi_get_time(
Alexander Graf80a48002016-08-16 21:08:45 +0200697 struct efi_time *time,
698 struct efi_time_cap *capabilities);
Alexander Graf80a48002016-08-16 21:08:45 +0200699
Heinrich Schuchardt656f1712019-05-31 07:38:29 +0200700efi_status_t __efi_runtime EFIAPI efi_set_time(struct efi_time *time);
701
Heinrich Schuchardt623b3a52017-09-15 10:06:11 +0200702#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
703/*
704 * Entry point for the tests of the EFI API.
705 * It is called by 'bootefi selftest'
706 */
707efi_status_t EFIAPI efi_selftest(efi_handle_t image_handle,
708 struct efi_system_table *systab);
709#endif
710
Heinrich Schuchardt0bda81b2018-12-30 20:53:51 +0100711efi_status_t EFIAPI efi_get_variable(u16 *variable_name,
712 const efi_guid_t *vendor, u32 *attributes,
713 efi_uintn_t *data_size, void *data);
Heinrich Schuchardt45c66f92018-05-17 07:57:05 +0200714efi_status_t EFIAPI efi_get_next_variable_name(efi_uintn_t *variable_name_size,
715 u16 *variable_name,
Heinrich Schuchardt7a4e7172020-03-22 18:28:20 +0100716 efi_guid_t *vendor);
Heinrich Schuchardt0bda81b2018-12-30 20:53:51 +0100717efi_status_t EFIAPI efi_set_variable(u16 *variable_name,
718 const efi_guid_t *vendor, u32 attributes,
Heinrich Schuchardt452257a2018-12-30 21:03:15 +0100719 efi_uintn_t data_size, const void *data);
Rob Clarkad644e72017-09-13 18:05:37 -0400720
Heinrich Schuchardtce435282019-06-20 12:13:05 +0200721efi_status_t EFIAPI efi_query_variable_info(
722 u32 attributes, u64 *maximum_variable_storage_size,
723 u64 *remaining_variable_storage_size,
724 u64 *maximum_variable_size);
725
AKASHI Takahiro1a82b342018-11-05 18:06:41 +0900726/*
727 * See section 3.1.3 in the v2.7 UEFI spec for more details on
728 * the layout of EFI_LOAD_OPTION. In short it is:
729 *
730 * typedef struct _EFI_LOAD_OPTION {
731 * UINT32 Attributes;
732 * UINT16 FilePathListLength;
733 * // CHAR16 Description[]; <-- variable length, NULL terminated
734 * // EFI_DEVICE_PATH_PROTOCOL FilePathList[];
735 * <-- FilePathListLength bytes
736 * // UINT8 OptionalData[];
737 * } EFI_LOAD_OPTION;
738 */
739struct efi_load_option {
740 u32 attributes;
741 u16 file_path_length;
742 u16 *label;
743 struct efi_device_path *file_path;
Heinrich Schuchardt39a1ff82019-04-29 13:51:45 +0200744 const u8 *optional_data;
AKASHI Takahiro1a82b342018-11-05 18:06:41 +0900745};
746
Ilias Apalodimas76e8acc2021-03-17 21:54:58 +0200747struct efi_device_path *efi_dp_from_lo(struct efi_load_option *lo,
748 efi_uintn_t *size, efi_guid_t guid);
749struct efi_device_path *efi_dp_concat(const struct efi_device_path *dp1,
750 const struct efi_device_path *dp2);
Heinrich Schuchardt0e69bcf2020-05-31 22:46:09 +0200751efi_status_t efi_deserialize_load_option(struct efi_load_option *lo, u8 *data,
752 efi_uintn_t *size);
AKASHI Takahiro1a82b342018-11-05 18:06:41 +0900753unsigned long efi_serialize_load_option(struct efi_load_option *lo, u8 **data);
Heinrich Schuchardt1064d042020-08-07 17:47:13 +0200754efi_status_t efi_set_load_options(efi_handle_t handle,
755 efi_uintn_t load_options_size,
756 void *load_options);
Heinrich Schuchardt0ad64002020-08-07 17:49:39 +0200757efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options);
Rob Clark9975fe92017-09-13 18:05:38 -0400758
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900759/**
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100760 * struct efi_image_regions - A list of memory regions
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900761 *
762 * @max: Maximum number of regions
763 * @num: Number of regions
764 * @reg: array of regions
765 */
766struct efi_image_regions {
767 int max;
768 int num;
769 struct image_region reg[];
770};
771
772/**
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100773 * struct efi_sig_data - A decoded data of struct efi_signature_data
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900774 *
775 * This structure represents an internal form of signature in
776 * signature database. A listed list may represent a signature list.
777 *
778 * @next: Pointer to next entry
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100779 * @owner: Signature owner
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900780 * @data: Pointer to signature data
781 * @size: Size of signature data
782 */
783struct efi_sig_data {
784 struct efi_sig_data *next;
785 efi_guid_t owner;
786 void *data;
787 size_t size;
788};
789
790/**
Heinrich Schuchardtc6f077a2021-02-25 08:02:37 +0100791 * struct efi_signature_store - A decoded data of signature database
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900792 *
793 * This structure represents an internal form of signature database.
794 *
795 * @next: Pointer to next entry
796 * @sig_type: Signature type
797 * @sig_data_list: Pointer to signature list
798 */
799struct efi_signature_store {
800 struct efi_signature_store *next;
801 efi_guid_t sig_type;
802 struct efi_sig_data *sig_data_list;
803};
804
805struct x509_certificate;
806struct pkcs7_message;
807
AKASHI Takahiro7926dfb2020-07-08 14:01:57 +0900808bool efi_signature_lookup_digest(struct efi_image_regions *regs,
809 struct efi_signature_store *db);
AKASHI Takahiro1115edd2020-07-21 19:35:22 +0900810bool efi_signature_verify(struct efi_image_regions *regs,
811 struct pkcs7_message *msg,
812 struct efi_signature_store *db,
813 struct efi_signature_store *dbx);
AKASHI Takahiro52956e52020-08-14 14:39:23 +0900814static inline bool efi_signature_verify_one(struct efi_image_regions *regs,
815 struct pkcs7_message *msg,
816 struct efi_signature_store *db)
817{
818 return efi_signature_verify(regs, msg, db, NULL);
819}
AKASHI Takahiro11bafb22020-07-08 14:01:56 +0900820bool efi_signature_check_signers(struct pkcs7_message *msg,
821 struct efi_signature_store *dbx);
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900822
823efi_status_t efi_image_region_add(struct efi_image_regions *regs,
824 const void *start, const void *end,
825 int nocheck);
AKASHI Takahirobe6296d2020-04-14 11:51:40 +0900826
827void efi_sigstore_free(struct efi_signature_store *sigstore);
Sughosh Ganub4f20a52020-12-30 19:27:08 +0530828struct efi_signature_store *efi_build_signature_store(void *sig_list,
829 efi_uintn_t size);
AKASHI Takahirobe6296d2020-04-14 11:51:40 +0900830struct efi_signature_store *efi_sigstore_parse_sigdb(u16 *name);
AKASHI Takahiro767f6ee2020-04-14 11:51:41 +0900831
832bool efi_secure_boot_enabled(void);
AKASHI Takahiro4540dab2020-04-14 11:51:44 +0900833
Sughosh Ganu04be98b2020-12-30 19:27:09 +0530834bool efi_capsule_auth_enabled(void);
835
AKASHI Takahiro4540dab2020-04-14 11:51:44 +0900836bool efi_image_parse(void *efi, size_t len, struct efi_image_regions **regp,
837 WIN_CERTIFICATE **auth, size_t *auth_len);
AKASHI Takahiro593e17d2020-04-14 11:51:39 +0900838
Sughosh Ganu201b8062020-12-30 19:27:07 +0530839struct pkcs7_message *efi_parse_pkcs7_header(const void *buf,
840 size_t buflen,
841 u8 **tmpbuf);
842
Heinrich Schuchardtb0dd8cb2020-06-28 16:30:29 +0200843/* runtime implementation of memcpy() */
844void efi_memcpy_runtime(void *dest, const void *src, size_t n);
845
AKASHI Takahiro077153e2020-10-29 13:47:46 +0900846/* commonly used helper function */
Ilias Apalodimasfe179d72020-12-31 12:26:46 +0200847u16 *efi_create_indexed_name(u16 *buffer, size_t buffer_size, const char *name,
848 unsigned int index);
AKASHI Takahiro077153e2020-10-29 13:47:46 +0900849
AKASHI Takahirof27c2012020-11-30 18:12:12 +0900850extern const struct efi_firmware_management_protocol efi_fmp_fit;
AKASHI Takahirobb7e71d2020-11-17 09:28:00 +0900851extern const struct efi_firmware_management_protocol efi_fmp_raw;
AKASHI Takahirof27c2012020-11-30 18:12:12 +0900852
AKASHI Takahiro2bc27ca2020-11-17 09:27:55 +0900853/* Capsule update */
854efi_status_t EFIAPI efi_update_capsule(
855 struct efi_capsule_header **capsule_header_array,
856 efi_uintn_t capsule_count,
857 u64 scatter_gather_list);
858efi_status_t EFIAPI efi_query_capsule_caps(
859 struct efi_capsule_header **capsule_header_array,
860 efi_uintn_t capsule_count,
861 u64 *maximum_capsule_size,
862 u32 *reset_type);
863
Sughosh Ganu04be98b2020-12-30 19:27:09 +0530864efi_status_t efi_capsule_authenticate(const void *capsule,
865 efi_uintn_t capsule_size,
866 void **image, efi_uintn_t *image_size);
867
AKASHI Takahiroc74cd8b2020-11-17 09:27:56 +0900868#define EFI_CAPSULE_DIR L"\\EFI\\UpdateCapsule\\"
869
870/* Hook at initialization */
871efi_status_t efi_launch_capsules(void);
872
Stephen Warren9b5e6392018-08-30 15:43:43 -0600873#else /* CONFIG_IS_ENABLED(EFI_LOADER) */
Alexander Grafbee91162016-03-04 01:09:59 +0100874
Alexander Graf50149ea2016-03-04 01:10:01 +0100875/* Without CONFIG_EFI_LOADER we don't have a runtime section, stub it out */
Alexander Graf3c63db92016-10-14 13:45:30 +0200876#define __efi_runtime_data
877#define __efi_runtime
Heinrich Schuchardt22c793e2018-03-03 15:28:59 +0100878static inline efi_status_t efi_add_runtime_mmio(void *mmio_ptr, u64 len)
879{
880 return EFI_SUCCESS;
881}
Alexander Graf50149ea2016-03-04 01:10:01 +0100882
Alexander Grafbee91162016-03-04 01:09:59 +0100883/* No loader configured, stub out EFI_ENTRY */
884static inline void efi_restore_gd(void) { }
Alexander Grafc07ad7c2016-04-11 16:16:19 +0200885static inline void efi_set_bootdev(const char *dev, const char *devnr,
Heinrich Schuchardt5f595182021-01-12 12:46:24 +0100886 const char *path, void *buffer,
887 size_t buffer_size) { }
Alexander Graf0efe1bc2016-05-06 21:01:01 +0200888static inline void efi_net_set_dhcp_ack(void *pkt, int len) { }
Heinrich Schuchardtc9a63f42018-04-05 11:56:21 +0200889static inline void efi_print_image_infos(void *pc) { }
AKASHI Takahiroc74cd8b2020-11-17 09:27:56 +0900890static inline efi_status_t efi_launch_capsules(void)
891{
892 return EFI_SUCCESS;
893}
Alexander Grafbee91162016-03-04 01:09:59 +0100894
Stephen Warren9b5e6392018-08-30 15:43:43 -0600895#endif /* CONFIG_IS_ENABLED(EFI_LOADER) */
Heinrich Schuchardtcd9e18d2017-10-18 18:13:07 +0200896
897#endif /* _EFI_LOADER_H */