Trying to boot the latest images on a RPi3 B fails

[Ralf Wenk]

Hello,

yesterday I tried to upgrade the content of the MSDOS boot partition
of a RPi3 B to that of the latest image:

FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180426-r333017.img.xz

As this gave me a non booting system - just the boot colors, no text of
any kind - I tried this image with a fresh micro SD card.

Now it does boot, but does not find a UFS partition or ZFS pool.

I reconfirmed on the system which wrote the image onto the SD card, that
it shows the expected UFS partition. A second try showed the same result.

After that I tried the all current RPi3 images from ftp.freebsd.org:

FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180329-r331740.img.xz
FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180419-r332796.img.xz
FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180412-r332432.img.xz
FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180426-r333017.img.xz

The oldest two images do boot, the newer two do not.
The error message on both is the same. After not detecting a UFS
partition or ZFS pool they tried to boot from the network.

I also got the impression that both booting images are way slower in
loading the kernel as this image from February is: 
FreeBSD-12.0-CURRENT-arm64-aarch64-RPI3-20180208-r329009.img
Bu I did not measure it yet.

Regards, Ralf