Switch to UEFI Re: CFT: alpha test of Ethernet driver for RPi4

[greg at unrelenting.technology]

March 29, 2020 12:23 AM, "Klaus Küchemann via freebsd-arm" <freebsd-arm at freebsd.org> wrote:

> I`m also working on pi4 a little while not ready…
> I recommend to switch the whole RPI-thing to UEFI/ ACPI, J.McNeill is working on that , afaik…

He's working on NetBSD a lot, but not on FreeBSD.

> So next step I see is to implement ACPI-xhci-driver since FreeBSD-boot PANICS on xhci-

That's not "implement a driver", that's "fix a bug" :)
I was looking into this a month ago..
For some reason reading from the XHCI's memory space returns junk like 0xdead.
And seems like nobody has seen that problem on NetBSD or Linux.
I'll test this a bit more now.

Once we get that working, and the Ethernet driver port is published, I could add ACPI attachment to the Ethernet driver.

> The good news is that I first saw USB working in UEFI-boot...…the ethernet driver should then later
> correspond or to be integrated into UEFI … nice to boot from a „Bios“ -style menu with a plugged
> USB-keyboard...

Yeah, eventually there's going to be a NetBSD-derived Ethernet driver in UEFI for network booting.