topic Re: i.MX6SoloX Linux & FreeRTOS shared resources in i.MX Processors

i.MX6SoloX Linux & FreeRTOS shared resources

o_scherbinin — Thu, 24 Dec 2020 16:48:06 GMT

hello. i am using iMX6 SABRESD board.
i need FreeRTOS and Linux systems for this board loaded in RAM (DDR). Linux is placed at the beginning of RAM and FreeRTOS in the second half.
Then first u-boot ups m4 core (FreeRTOS) and it works fine till Linux starts and m4 loses its console. I can see that a fault
occures when Linux initializes NVIC.
The intended for m4 serial device is disabled in the device tree (using of m4 dts file).
I would like to know what is correct way work with two systmes at the same time.

With best wishes.

Re: i.MX6SoloX Linux & FreeRTOS shared resources

igorpadykov — Tue, 29 Dec 2020 01:09:11 GMT

Hi o_scherbinin

for debugging hints one can look at similar issue on below link

https://community.nxp.com/t5/i-MX-Processors/GPT-capture-sample-on-M4-seems-to-hang-on-Linux-boot/m-p/902416

Best regards
igor

Re: i.MX6SoloX Linux & FreeRTOS shared resources

o_scherbinin — Wed, 30 Dec 2020 13:26:04 GMT

Although, the fault was connected with incorrect area in my ld file, i find this link very useful.
Thank you Igor.