Hi.
I want to change uboot behaviour (boot from dhcp or from flash) and for development I want to control it via simple wire on pins on J21 header.
So when there is no wire between two pins, it should boot from internal flash. When I put wire, it enters “diskless” mode and start dhcp.
Is it possible to do in uboot? I tried different ways, but I cannot achieve predictable button-like behaviour from pins.