/* * Copyright (c) 2017 Linaro Limited. * * SPDX-License-Identifier: Apache-2.0 */ #define DT_DRV_COMPAT nxp_kinetis_trng #include #include #include #include #include "fsl_trng.h" struct mcux_entropy_config { TRNG_Type *base; }; static int entropy_mcux_trng_get_entropy(const struct device *dev, uint8_t *buffer, uint16_t length) { const struct mcux_entropy_config *config = dev->config; status_t status; status = TRNG_GetRandomData(config->base, buffer, length); __ASSERT_NO_MSG(!status); return 0; } static const struct entropy_driver_api entropy_mcux_trng_api_funcs = { .get_entropy = entropy_mcux_trng_get_entropy }; static struct mcux_entropy_config entropy_mcux_config = { .base = (TRNG_Type *)DT_INST_REG_ADDR(0) }; static int entropy_mcux_trng_init(const struct device *dev) { const struct mcux_entropy_config *config = dev->config; trng_config_t conf; status_t status; status = TRNG_GetDefaultConfig(&conf); __ASSERT_NO_MSG(!status); status = TRNG_Init(config->base, &conf); __ASSERT_NO_MSG(!status); return 0; } DEVICE_DT_INST_DEFINE(0, entropy_mcux_trng_init, NULL, NULL, &entropy_mcux_config, PRE_KERNEL_1, CONFIG_ENTROPY_INIT_PRIORITY, &entropy_mcux_trng_api_funcs);