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 * Copyright (c) 2018 - 2021, Nordic Semiconductor ASA
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 * 2. Redistributions in binary form, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, must reproduce the above copyright notice, this list of
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 * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
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#include "sdk_common.h"
#if NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)

#include "nrf.h"
#include "nrf_crypto_init.h"
#include "cc310_backend_shared.h"
#include "sns_silib.h"
#include "cc310_backend_mutex.h"
#include "nrf_crypto_rng.h"


static uint32_t init_result_get(uint32_t crys_error)
{
    uint32_t ret_val = NRF_ERROR_INTERNAL;
    switch (crys_error)
    {
        case CRYS_OK:
            ret_val = NRF_SUCCESS;
            break;

        default:
            ret_val = NRF_ERROR_INTERNAL;
            break;
    }

    return ret_val;
}

static ret_code_t cc310_backend_init(void)
{
    uint32_t    ret_val;
    CRYSError_t crys_error;

    cc310_backend_mutex_init();

    // Initialize the CC310 run-time library
    crys_error = SaSi_LibInit();

    ret_val = init_result_get(crys_error);
    VERIFY_SUCCESS(ret_val);

#if defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 1)

    ret_val = nrf_crypto_rng_init(NULL, NULL);
    VERIFY_SUCCESS(ret_val);

#elif defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 0)

    // Do nothing

#else

    #warning NRF_CRYPTO_RNG_AUTO_INIT_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?).

#endif // NRF_CRYPTO_RNG_AUTO_INIT_ENABLED

    return ret_val;
}


static ret_code_t cc310_backend_uninit(void)
{
#if defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 1)

    uint32_t ret_val;
    ret_val = nrf_crypto_rng_init(NULL, NULL);
    VERIFY_SUCCESS(ret_val);

#elif defined(NRF_CRYPTO_RNG_AUTO_INIT_ENABLED) && (NRF_CRYPTO_RNG_AUTO_INIT_ENABLED == 0)

    // Do nothing

#else

    #warning NRF_CRYPTO_RNG_AUTO_INIT_ENABLED define not found in sdk_config.h (Is the sdk_config.h valid?).

#endif // NRF_CRYPTO_RNG_AUTO_INIT_ENABLED

    SaSi_LibFini();

    return NRF_SUCCESS;
}


CRYPTO_BACKEND_REGISTER(nrf_crypto_backend_info_t const cc310_backend) =
{
    .init_fn    = cc310_backend_init,
    .uninit_fn  = cc310_backend_uninit,
};

#endif // NRF_MODULE_ENABLED(NRF_CRYPTO) && NRF_MODULE_ENABLED(NRF_CRYPTO_BACKEND_CC310)
