| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Root node for system services |
| * |
| * Copyright (c) 2018 Heinrich Schuchardt |
| */ |
| |
| #include <common.h> |
| #include <malloc.h> |
| #include <efi_dt_fixup.h> |
| #include <efi_loader.h> |
| |
| const efi_guid_t efi_u_boot_guid = U_BOOT_GUID; |
| |
| efi_handle_t efi_root = NULL; |
| |
| struct efi_root_dp { |
| struct efi_device_path_vendor vendor; |
| struct efi_device_path end; |
| } __packed; |
| |
| /** |
| * efi_root_node_register() - create root node |
| * |
| * Create the root node on which we install all protocols that are |
| * not related to a loaded image or a driver. |
| * |
| * Return: status code |
| */ |
| efi_status_t efi_root_node_register(void) |
| { |
| efi_status_t ret; |
| struct efi_root_dp *dp; |
| |
| /* Create device path protocol */ |
| dp = calloc(1, sizeof(*dp)); |
| if (!dp) |
| return EFI_OUT_OF_RESOURCES; |
| |
| /* Fill vendor node */ |
| dp->vendor.dp.type = DEVICE_PATH_TYPE_HARDWARE_DEVICE; |
| dp->vendor.dp.sub_type = DEVICE_PATH_SUB_TYPE_VENDOR; |
| dp->vendor.dp.length = sizeof(struct efi_device_path_vendor); |
| dp->vendor.guid = efi_u_boot_guid; |
| |
| /* Fill end node */ |
| dp->end.type = DEVICE_PATH_TYPE_END; |
| dp->end.sub_type = DEVICE_PATH_SUB_TYPE_END; |
| dp->end.length = sizeof(struct efi_device_path); |
| |
| /* Create root node and install protocols */ |
| ret = EFI_CALL(efi_install_multiple_protocol_interfaces |
| (&efi_root, |
| /* Device path protocol */ |
| &efi_guid_device_path, dp, |
| #if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT) |
| /* Device path to text protocol */ |
| &efi_guid_device_path_to_text_protocol, |
| (void *)&efi_device_path_to_text, |
| #endif |
| #ifdef CONFIG_EFI_DEVICE_PATH_UTIL |
| /* Device path utilities protocol */ |
| &efi_guid_device_path_utilities_protocol, |
| (void *)&efi_device_path_utilities, |
| #endif |
| #ifdef CONFIG_EFI_DT_FIXUP |
| /* Device-tree fix-up protocol */ |
| &efi_guid_dt_fixup_protocol, |
| (void *)&efi_dt_fixup_prot, |
| #endif |
| #if CONFIG_IS_ENABLED(EFI_UNICODE_COLLATION_PROTOCOL2) |
| &efi_guid_unicode_collation_protocol2, |
| (void *)&efi_unicode_collation_protocol2, |
| #endif |
| #if CONFIG_IS_ENABLED(EFI_LOADER_HII) |
| /* HII string protocol */ |
| &efi_guid_hii_string_protocol, |
| (void *)&efi_hii_string, |
| /* HII database protocol */ |
| &efi_guid_hii_database_protocol, |
| (void *)&efi_hii_database, |
| #endif |
| NULL)); |
| efi_root->type = EFI_OBJECT_TYPE_U_BOOT_FIRMWARE; |
| return ret; |
| } |