90 lines
2.5 KiB
C
90 lines
2.5 KiB
C
/*
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* EFI device path interface
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*
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* Copyright (c) 2017 Leif Lindholm
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <efi_loader.h>
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const efi_guid_t efi_guid_device_path_utilities_protocol =
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EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID;
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static efi_uintn_t EFIAPI get_device_path_size(
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const struct efi_device_path *device_path)
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{
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efi_uintn_t sz = 0;
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EFI_ENTRY("%p", device_path);
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/* size includes the END node: */
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if (device_path)
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sz = efi_dp_size(device_path) + sizeof(struct efi_device_path);
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return EFI_EXIT(sz);
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}
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static struct efi_device_path * EFIAPI duplicate_device_path(
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const struct efi_device_path *device_path)
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{
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EFI_ENTRY("%p", device_path);
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return EFI_EXIT(efi_dp_dup(device_path));
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}
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static struct efi_device_path * EFIAPI append_device_path(
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const struct efi_device_path *src1,
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const struct efi_device_path *src2)
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{
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EFI_ENTRY("%p, %p", src1, src2);
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return EFI_EXIT(efi_dp_append(src1, src2));
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}
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static struct efi_device_path * EFIAPI append_device_node(
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const struct efi_device_path *device_path,
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const struct efi_device_path *device_node)
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{
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EFI_ENTRY("%p, %p", device_path, device_node);
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return EFI_EXIT(efi_dp_append_node(device_path, device_node));
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}
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static struct efi_device_path * EFIAPI append_device_path_instance(
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const struct efi_device_path *device_path,
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const struct efi_device_path *device_path_instance)
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{
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EFI_ENTRY("%p, %p", device_path, device_path_instance);
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return EFI_EXIT(NULL);
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}
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static struct efi_device_path * EFIAPI get_next_device_path_instance(
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struct efi_device_path **device_path_instance,
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efi_uintn_t *device_path_instance_size)
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{
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EFI_ENTRY("%p, %p", device_path_instance, device_path_instance_size);
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return EFI_EXIT(NULL);
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}
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static bool EFIAPI is_device_path_multi_instance(
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const struct efi_device_path *device_path)
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{
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EFI_ENTRY("%p", device_path);
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return EFI_EXIT(false);
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}
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static struct efi_device_path * EFIAPI create_device_node(
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uint8_t node_type, uint8_t node_sub_type, uint16_t node_length)
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{
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EFI_ENTRY("%u, %u, %u", node_type, node_sub_type, node_length);
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return EFI_EXIT(NULL);
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}
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const struct efi_device_path_utilities_protocol efi_device_path_utilities = {
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.get_device_path_size = get_device_path_size,
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.duplicate_device_path = duplicate_device_path,
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.append_device_path = append_device_path,
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.append_device_node = append_device_node,
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.append_device_path_instance = append_device_path_instance,
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.get_next_device_path_instance = get_next_device_path_instance,
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.is_device_path_multi_instance = is_device_path_multi_instance,
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.create_device_node = create_device_node,
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};
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