You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.1 KiB
57 lines
1.1 KiB
/*
|
|
* Copyright (c) 2021, ARM Limited. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#ifndef TRNG_SVC_H
|
|
#define TRNG_SVC_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include <lib/smccc.h>
|
|
|
|
/* SMC function IDs for TRNG queries */
|
|
#define ARM_TRNG_VERSION U(0x84000050)
|
|
#define ARM_TRNG_FEATURES U(0x84000051)
|
|
#define ARM_TRNG_GET_UUID U(0x84000052)
|
|
#define ARM_TRNG_RND32 U(0x84000053)
|
|
#define ARM_TRNG_RND64 U(0xc4000053)
|
|
|
|
/* TRNG version numbers */
|
|
#define TRNG_VERSION_MAJOR (0x1)
|
|
#define TRNG_VERSION_MINOR (0x0)
|
|
|
|
/* TRNG Error Numbers */
|
|
#define TRNG_E_SUCCESS (0)
|
|
#define TRNG_E_NOT_SUPPORTED (-1)
|
|
#define TRNG_E_INVALID_PARAMS (-2)
|
|
#define TRNG_E_NO_ENTROPY (-3)
|
|
#define TRNG_E_NOT_IMPLEMENTED (-4)
|
|
|
|
#if TRNG_SUPPORT
|
|
void trng_setup(void);
|
|
bool is_trng_fid(uint32_t smc_fid);
|
|
#else
|
|
static inline void trng_setup(void)
|
|
{
|
|
}
|
|
|
|
static inline bool is_trng_fid(uint32_t smc_fid)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
uintptr_t trng_smc_handler(
|
|
uint32_t smc_fid,
|
|
u_register_t x1,
|
|
u_register_t x2,
|
|
u_register_t x3,
|
|
u_register_t x4,
|
|
void *cookie,
|
|
void *handle,
|
|
u_register_t flags
|
|
);
|
|
|
|
#endif /* TRNG_SVC_H */
|
|
|