mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-16 17:44:19 +00:00
8f0235fb8f
The PSA Crypto API is available with sending messages to RSE. Change to invoke PSA Crypto API for getting entropy. Change-Id: I4b2dc4eb99606c2425b64949d9c3f5c576883758 Signed-off-by: Leo Yan <leo.yan@arm.com> Signed-off-by: Icen Zeyada <Icen.Zeyada2@arm.com>
57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
|
|
* Copyright (c) 2017-2024, ARM Limited and Contributors. All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*/
|
|
|
|
#include <arm_acle.h>
|
|
#include <assert.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
|
|
#include <lib/mmio.h>
|
|
#include <lib/psa/rse_platform_api.h>
|
|
#include <lib/smccc.h>
|
|
#include <lib/utils_def.h>
|
|
#include <plat/common/platform.h>
|
|
#include <platform_def.h>
|
|
#include <services/trng_svc.h>
|
|
#include <smccc_helpers.h>
|
|
|
|
DEFINE_SVC_UUID2(_plat_trng_uuid,
|
|
0x23523c58, 0x7448, 0x4083, 0x9d, 0x16,
|
|
0xe3, 0xfa, 0xb9, 0xf1, 0x73, 0xbc
|
|
);
|
|
uuid_t plat_trng_uuid;
|
|
|
|
bool plat_get_entropy(uint64_t *out)
|
|
{
|
|
#if CRYPTO_SUPPORT
|
|
psa_status_t status;
|
|
|
|
status = rse_platform_get_entropy((uint8_t *)out, sizeof(*out));
|
|
if (status != PSA_SUCCESS) {
|
|
printf("Failed for entropy read, psa_status=%d\n", status);
|
|
return false;
|
|
}
|
|
#else
|
|
/* Dummy value */
|
|
*out = 0xABBAEDDAACDCDEAD;
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
void plat_entropy_setup(void)
|
|
{
|
|
uint64_t entropy;
|
|
|
|
plat_trng_uuid = _plat_trng_uuid;
|
|
|
|
/* Initialise the entropy source and trigger RNG generation */
|
|
if (!plat_get_entropy(&entropy)) {
|
|
ERROR("Failed to setup entropy\n");
|
|
panic();
|
|
}
|
|
}
|