Disabling Serial Ports

I want to disable all the serial ports. Strange I know, but we are trying to move from using the cc7(running netos) to the cc9(running lxnetes) unfortunately our target hardware uses pins for all of the serial devices on the unc90, It works with the unc20 as we disable the serial ports already.

My problem is that when I do this in u-boot it doesn’t boot.

I have set it up to auto boot from a nfs share, this works with the serail port enabled, all I change is that define for the serial port and the config for them under unc90.

any suggestions?