CC3220SF-LAUNCHXL: Secure boot

Hi Manish,

The secure boot feature of the CC3220 comes from a variety of security enablers such as the encrypted filesystem, signed binary images, and secure root of trust that when combined allow for a secure boot flow that is fully integrated into the bootloader operation of the CC32xx devices. You do not need to implement or provide any of the secure boot functionality in your application.

The full description of the various security enablers are explained in the following document:

https://www.ti.com/lit/swra509

With the security enablers provided, the secure boot flow is like the following:

With the integrity checking functioning like so:

Let me know if you need more clarification on how secure boot works on the CC3220, or have further questions on the various security enablers used.

Regards,

Michael

Hi Manish,

As FreeRTOS is a third-party product, we will be unable to say for sure if applications written with FreeRTOS 8 will be fully compatible without porting with FreeRTOS 10. Have you already successfully completed the porting process from FreeRTOS 8 + CC3200 to FreeRTOS 10 + CC3220?

If the question is more of whether the CC3220 SDK can be used with older versions of FreeRTOS 10 rather than the v.10.2.1 that we validate against in the latest CC32xx SDK, then that will be something you will have to try on your own and solve any possible interoperability issues that might pop up. I unfortunately do not have any previous versions of FreeRTOS available to quickly test against, but if you are able to work with FreeRTOS 10, I advise you use the version of FreeRTOS we validate against to avoid any possible interop issues.

Regards,

Michael