rpi4 headless experience

[Robert Crowston]

USB is an ordinary VIA chip attached by pci-e. But the pci-e controller is proprietary and there is little documentation.

I have been working on a driver for some time, with limited success—I can see the USB controller and enumerate the ports on it, but it doesn’t start properly. I know some other folks have been looking at directly accessing USB without initializing the pci-e controller.

openBSD 6.7 has pci-e for rpi4. It uses TianoCore instead of u-boot. I believe TianoCore does the hard part of the pci-e initialization like configuring the inbound system memory view.

Another mailing list contributor is working on wifi.

On Tue, May 19, 2020 at 21:32, Dan Mack <mack at macktronics.com> wrote:

> Just tried the latest FreeBSD on RPI image on my rpi4-4GB system. Here's
> what I experienced in case anyone else is interested:
>
> - Install method - I just dd'd the unxz'd image from the download site
> onto a new microSD card.
>
> - used a serial port connected RPI to another RPI using a ttl to usb
> cable.
>
> - powered on, freebsd booted up just fine.
>
> root at generic:~ # uname -a ; df -h ; sysctl hw | grep physmem
> FreeBSD generic 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r361019: Thu May 14
> 09:12:43 UTC 2020
> root at releng1.nyi.freebsd.org:/usr/obj/usr/src/arm64.aarch64/sys/GENERIC arm64
>
> Filesystem Size Used Avail Capacity Mounted on
> /dev/ufs/rootfs 29G 2.6G 24G 10% /
> devfs 1.0K 1.0K 0B 100% /dev
> /dev/msdosfs/MSDOSBOOT 50M 25M 25M 50% /boot/msdos
> tmpfs 50M 4.0K 50M 0% /tmp
>
> hw.physmem: 973434880
>
> I pluged in a USB connected SSD and it was not recognized on either USB2
> or USB3 ports.
>
> And the memory size is not reporting the full 4GB as can be seen above.
>
> Ethernet is working without any changes (dhcp kicked in by default) and
> seems to work.
>
> Not sure about the on-board WiFI.
>
> That's it, if anyone knows the status of the USB support or how to get the
> system to see all the memory, let me know :-)
>
> Dan
>
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