1 // SPDX-License-Identifier: GPL-2.0+
3 * Root node for system services
5 * Copyright (c) 2018 Heinrich Schuchardt
10 #include <efi_loader.h>
12 const efi_guid_t efi_u_boot_guid = U_BOOT_GUID;
14 efi_handle_t efi_root = NULL;
17 struct efi_device_path_vendor vendor;
18 struct efi_device_path end;
22 * efi_root_node_register() - create root node
24 * Create the root node on which we install all protocols that are
25 * not related to a loaded image or a driver.
29 efi_status_t efi_root_node_register(void)
31 struct efi_root_dp *dp;
33 /* Create device path protocol */
34 dp = calloc(1, sizeof(*dp));
36 return EFI_OUT_OF_RESOURCES;
38 /* Fill vendor node */
39 dp->vendor.dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE;
40 dp->vendor.dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR;
41 dp->vendor.dp.length = sizeof(struct efi_device_path_vendor);
42 dp->vendor.guid = efi_u_boot_guid;
45 dp->end.type = DEVICE_PATH_TYPE_END;
46 dp->end.sub_type = DEVICE_PATH_SUB_TYPE_END;
47 dp->end.length = sizeof(struct efi_device_path);
49 /* Create root node and install protocols */
50 return EFI_CALL(efi_install_multiple_protocol_interfaces(&efi_root,
51 /* Device path protocol */
52 &efi_guid_device_path, dp,
53 /* Device path to text protocol */
54 &efi_guid_device_path_to_text_protocol,
55 (void *)&efi_device_path_to_text,
56 /* Device path utilities protocol */
57 &efi_guid_device_path_utilities_protocol,
58 (void *)&efi_device_path_utilities,
59 /* Unicode collation protocol */
60 &efi_guid_unicode_collation_protocol,
61 (void *)&efi_unicode_collation_protocol,
62 #if CONFIG_IS_ENABLED(EFI_LOADER_HII)
63 /* HII string protocol */
64 &efi_guid_hii_string_protocol,
65 (void *)&efi_hii_string,
66 /* HII database protocol */
67 &efi_guid_hii_database_protocol,
68 (void *)&efi_hii_database,
69 /* HII configuration routing protocol */
70 &efi_guid_hii_config_routing_protocol,
71 (void *)&efi_hii_config_routing,