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54 lines
1.1 KiB
54 lines
1.1 KiB
/* |
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* Copyright (c) 2017 Linaro Limited. |
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* |
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* SPDX-License-Identifier: Apache-2.0 |
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*/ |
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#define DT_DRV_COMPAT nxp_lpc_rng |
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#include <zephyr/device.h> |
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#include <zephyr/drivers/entropy.h> |
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#include <zephyr/random/random.h> |
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#include <zephyr/init.h> |
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#include "fsl_rng.h" |
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struct mcux_entropy_config { |
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RNG_Type *base; |
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}; |
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static int entropy_mcux_rng_get_entropy(const struct device *dev, |
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uint8_t *buffer, |
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uint16_t length) |
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{ |
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const struct mcux_entropy_config *config = dev->config; |
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status_t status; |
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status = RNG_GetRandomData(config->base, buffer, length); |
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__ASSERT_NO_MSG(!status); |
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return 0; |
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} |
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static DEVICE_API(entropy, entropy_mcux_rng_api_funcs) = { |
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.get_entropy = entropy_mcux_rng_get_entropy |
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}; |
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static const struct mcux_entropy_config entropy_mcux_config = { |
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.base = (RNG_Type *)DT_INST_REG_ADDR(0) |
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}; |
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static int entropy_mcux_rng_init(const struct device *dev) |
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{ |
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ARG_UNUSED(dev); |
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RNG_Init(entropy_mcux_config.base); |
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return 0; |
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} |
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DEVICE_DT_INST_DEFINE(0, |
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entropy_mcux_rng_init, NULL, NULL, |
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&entropy_mcux_config, |
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PRE_KERNEL_1, CONFIG_ENTROPY_INIT_PRIORITY, |
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&entropy_mcux_rng_api_funcs);
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