I’m using a rpi0 for a system that will benefit from an air-gap (i.e. no network connection at all, interacting with a physically connected screen and keyboard).
I can configure the unit to not connect to any wifi, but I’d like to thoroughly disable the capability alltogether.
I can’t seem to get hold of any of the old rpi0 units without the wireless chip, so I’m looking at disabling the chip on a rpi0w. I can see some guides on doing this at the hardware level, but I’d also like to learn how to do it at the firmware level.
Before I start desoldering things, I’ve been trying to find a way to remove driver support via buildroot. Not having any luck though (and I am not an embedded linux expert, so I might be missing something obvious).
Can anyone point me in the right direction?