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Heinrich Schuchardt79d72022018-09-20 21:58:23 +02001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Root node for system services
4 *
5 * Copyright (c) 2018 Heinrich Schuchardt
6 */
7
8#include <common.h>
9#include <malloc.h>
10#include <efi_loader.h>
11
12const efi_guid_t efi_u_boot_guid = U_BOOT_GUID;
13
AKASHI Takahiro0b275752019-04-16 13:24:20 +090014efi_handle_t efi_root = NULL;
15
Heinrich Schuchardt79d72022018-09-20 21:58:23 +020016struct efi_root_dp {
17 struct efi_device_path_vendor vendor;
18 struct efi_device_path end;
19} __packed;
20
21/**
22 * efi_root_node_register() - create root node
23 *
24 * Create the root node on which we install all protocols that are
25 * not related to a loaded image or a driver.
26 *
27 * Return: status code
28 */
29efi_status_t efi_root_node_register(void)
30{
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020031 efi_status_t ret;
Heinrich Schuchardt79d72022018-09-20 21:58:23 +020032 struct efi_root_dp *dp;
33
Heinrich Schuchardt22b9fb92019-04-12 07:14:43 +020034 /* Create device path protocol */
Heinrich Schuchardt79d72022018-09-20 21:58:23 +020035 dp = calloc(1, sizeof(*dp));
36 if (!dp)
37 return EFI_OUT_OF_RESOURCES;
38
39 /* Fill vendor node */
40 dp->vendor.dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
41 dp->vendor.dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR;
42 dp->vendor.dp.length = sizeof(struct efi_device_path_vendor);
43 dp->vendor.guid = efi_u_boot_guid;
44
45 /* Fill end node */
46 dp->end.type = DEVICE_PATH_TYPE_END;
47 dp->end.sub_type = DEVICE_PATH_SUB_TYPE_END;
48 dp->end.length = sizeof(struct efi_device_path);
49
Heinrich Schuchardt22b9fb92019-04-12 07:14:43 +020050 /* Create root node and install protocols */
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020051 ret = EFI_CALL(efi_install_multiple_protocol_interfaces
52 (&efi_root,
53 /* Device path protocol */
54 &efi_guid_device_path, dp,
Heinrich Schuchardt3db35912019-05-11 09:53:33 +020055#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT)
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020056 /* Device path to text protocol */
57 &efi_guid_device_path_to_text_protocol,
58 (void *)&efi_device_path_to_text,
Heinrich Schuchardt3db35912019-05-11 09:53:33 +020059#endif
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020060 /* Device path utilities protocol */
61 &efi_guid_device_path_utilities_protocol,
62 (void *)&efi_device_path_utilities,
Heinrich Schuchardtb3258842019-05-16 07:52:58 +020063#if CONFIG_IS_ENABLED(EFI_UNICODE_COLLATION_PROTOCOL2)
Heinrich Schuchardt18ed8cf2019-05-16 18:19:00 +020064#if CONFIG_IS_ENABLED(EFI_UNICODE_COLLATION_PROTOCOL)
65 /* Deprecated Unicode collation protocol */
66 &efi_guid_unicode_collation_protocol,
67 (void *)&efi_unicode_collation_protocol,
68#endif
69 /* Current Unicode collation protocol */
Heinrich Schuchardtb3258842019-05-16 07:52:58 +020070 &efi_guid_unicode_collation_protocol2,
71 (void *)&efi_unicode_collation_protocol2,
Heinrich Schuchardt532fec72019-05-08 23:24:26 +020072#endif
Heinrich Schuchardt926e6962019-04-07 23:53:53 +020073#if CONFIG_IS_ENABLED(EFI_LOADER_HII)
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020074 /* HII string protocol */
75 &efi_guid_hii_string_protocol,
76 (void *)&efi_hii_string,
77 /* HII database protocol */
78 &efi_guid_hii_database_protocol,
79 (void *)&efi_hii_database,
80 /* HII configuration routing protocol */
81 &efi_guid_hii_config_routing_protocol,
82 (void *)&efi_hii_config_routing,
Heinrich Schuchardt926e6962019-04-07 23:53:53 +020083#endif
Sughosh Ganu693a4f42019-12-29 00:01:06 +053084#if CONFIG_IS_ENABLED(EFI_RNG_PROTOCOL)
85 &efi_guid_rng_protocol,
86 (void *)&efi_rng_protocol,
87#endif
Heinrich Schuchardt2e0a7902019-05-05 16:55:06 +020088 NULL));
89 efi_root->type = EFI_OBJECT_TYPE_U_BOOT_FIRMWARE;
90 return ret;
Heinrich Schuchardt79d72022018-09-20 21:58:23 +020091}