RPi4B 2711ZPKFSB06C0T parts seen in the wild, 13.0-RELEASE fails to boot on them

[Mark Millard]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=255080

comment #5 reports a comparison/contrast of 4 GiByte
RPi4B's with:

BROADCOM
2711ZPKFSB06BOT
TE1919
045-23 B3 W

vs.

BROADCOM
2711ZPKFSB06C0T
TA2105
054-05 B3 W

The C0T one does not boot for 13.0-RELEASE's image
the older B0T one does.

The C0T RPi4B should be able to DMA outside
the 3 GiByte limit that the B0T ones had: no more
limit. The RPi firmware may configure the C0T parts
differently and FreeBSD might have changes
required if it is to work with the newer parts.

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)