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- // 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;
- }
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