mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 07:31:15 +00:00
4e6b5d6503
Currently we assign a lot of protocols to loaded images though these protocols are not related to them. Instead they should be installed on a separate handle. Via the device path it is the parent to the devices like the network adapter. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Alexander Graf <agraf@suse.de>
79 lines
2 KiB
C
79 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Root node for system services
|
|
*
|
|
* Copyright (c) 2018 Heinrich Schuchardt
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <malloc.h>
|
|
#include <efi_loader.h>
|
|
|
|
const efi_guid_t efi_u_boot_guid = U_BOOT_GUID;
|
|
|
|
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_handle_t root;
|
|
efi_status_t ret;
|
|
struct efi_root_dp *dp;
|
|
|
|
/* Create handle */
|
|
ret = efi_create_handle(&root);
|
|
if (ret != EFI_SUCCESS)
|
|
return ret;
|
|
|
|
/* Install 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);
|
|
|
|
/* Install device path protocol */
|
|
ret = efi_add_protocol(root, &efi_guid_device_path, dp);
|
|
if (ret != EFI_SUCCESS)
|
|
goto failure;
|
|
|
|
/* Install device path to text protocol */
|
|
ret = efi_add_protocol(root, &efi_guid_device_path_to_text_protocol,
|
|
(void *)&efi_device_path_to_text);
|
|
if (ret != EFI_SUCCESS)
|
|
goto failure;
|
|
|
|
/* Install device path utilities protocol */
|
|
ret = efi_add_protocol(root, &efi_guid_device_path_utilities_protocol,
|
|
(void *)&efi_device_path_utilities);
|
|
if (ret != EFI_SUCCESS)
|
|
goto failure;
|
|
|
|
/* Install Unicode collation protocol */
|
|
ret = efi_add_protocol(root, &efi_guid_unicode_collation_protocol,
|
|
(void *)&efi_unicode_collation_protocol);
|
|
if (ret != EFI_SUCCESS)
|
|
goto failure;
|
|
|
|
failure:
|
|
return ret;
|
|
}
|