On i.MX8 devices there is a SECO (https://www.nxp.com/docs/en/application-note/AN12906.pdf) hardware module available for heightened security. This module handles AES operations, limited ECC operations, key storage, and provides a RNG. wolfSSL has long since been expanded to make use of the SECO where possible. A full step by step guide for building wolfSSL and setting up Linux to be used with SECO can be found in the recent document addition here: (https://www.wolfssl.com/documentation/manuals/wolfssl/chapter02.html#building-for-nxp-caam).
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