1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * Copyright (c) 2019, Linaro Limited
4 */
5
6#if !defined _EFI_RNG_H_
7#define _EFI_RNG_H_
8
9#include <efi.h>
10#include <efi_api.h>
11
12/* EFI random number generation protocol related GUID definitions */
13#define EFI_RNG_ALGORITHM_RAW \
14	EFI_GUID(0xe43176d7, 0xb6e8, 0x4827, 0xb7, 0x84, \
15		 0x7f, 0xfd, 0xc4, 0xb6, 0x85, 0x61)
16
17struct efi_rng_protocol {
18	efi_status_t (EFIAPI *get_info)(struct efi_rng_protocol *protocol,
19					efi_uintn_t *rng_algorithm_list_size,
20					efi_guid_t *rng_algorithm_list);
21	efi_status_t (EFIAPI *get_rng)(struct efi_rng_protocol *protocol,
22				       efi_guid_t *rng_algorithm,
23				       efi_uintn_t rng_value_length, uint8_t *rng_value);
24};
25
26efi_status_t platform_get_rng_device(struct udevice **dev);
27
28#endif /* _EFI_RNG_H_ */
29