64-bit RPi4B u-boot hangup with modern rpi firmware: some information (but investigative-toolbox limited)

[Klaus Cucinauomo]

> Am 15.10.2020 um 22:30 schrieb Mark Millard via freebsd-arm <freebsd-arm at freebsd.org>:

> If I understand right, the serial console baud rate change
> problem seen on, for example, RPi3*'s is still an issue.
> 

No:

https://github.com/raspberrypi/firmware/issues/1445#issuecomment-709341782

K.