EC21 - Trust Zone

I’m looking for any information about Trust Zone in Quectel EC21.

I’m running EC21EFAR06A05M4G_OCPU_20.002.20.002 version, and typing “make kernel_menuconfig” I found “CONFIG_QTZONE” kernel configuration.
Once enabled it, built everything and flashed, I was able to found a new device in /dev (/dev/tzone).

Moreover in EC21EFAR06A05M4G_OCPU_20.002.20.002_SDK is present an trust zone example (ql-ol-sdk/ql-ol-extsdk/example/tzone)

I built it and after tried to run I got

I’m not able to got how I could use it.

Thanks a lot in advance

Hello, I am looking for a fee for someone able to connect my iot docassion gps lte to a server in it and install a
Quectel bg96 quectel ec21-e because it is beyond my skills, I will have to take control of my computer remotely, connect to iot, delete the old server, giveclien, es meter, the new data servers and that’s it.

I am available at any time this is a serious request
My email address
Sincerely, kamel.

Help please