topic Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example in LPC Microcontrollers

Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example

AlexKuznetsov — Tue, 26 Mar 2024 08:51:35 GMT

I'm looking for a full functional example for LPC55S69-EVK board.

I would like to run FreeRTOS on the non secure side and call some secure functions provided by TrustedFirmware-M (TF-M). Is there any a such example available across the net?

Re: Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example

Alice_Yang — Wed, 27 Mar 2024 07:29:02 GMT

Hello @AlexKuznetsov

The purpose of dividing Secure and non-secure is to protect secure part from being read by non-secure ones. So why do you want to call secure function on secure world?

There is freeRTOS secure/non-secure demo under SDK:

Alice

Re: Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example

AlexKuznetsov — Wed, 27 Mar 2024 08:46:19 GMT

This is a different stuff.

I would say your example is a ported solution from FreeRTOS (https://www.freertos.org/RTOS-Cortex-M33-LPC55S69-MCUXpresso-GCC.html)

In the NXP SDK you have tfm based examples like tfm_demo_ns & tfm_demo_s, unfortunately the NS part is a bare-metal example.

So my main problem is a non-secure FreeRTOS part and I'm still looking for a such example.

Re: Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example

AlexKuznetsov — Wed, 27 Mar 2024 11:45:15 GMT

tfm_demo is based on the RTX RTOS, not a FreeRTOS.

Re: Looking for LPC55S69-EVK solid TF-M + non-secure FreeRTOS example

AlexKuznetsov — Fri, 29 Mar 2024 07:14:58 GMT

I found a solution here:

https://forums.freertos.org/t/lpc55s69-evk-solid-tf-m-non-secure-freertos-example-search/19631/5