Hi, Have there been any progress in this regard? I would love to help out if it hasn't.
I just got a raspberry pi 3b+ that I would like to use with OpenBSD. Also, what about the wireless interface, is it supported? Thanks, JJ On Wed, Dec 13, 2017 at 2:54 PM, Mark Kettenis <mark.kette...@xs4all.nl> wrote: > > From: Hannu Vuolasaho <vuokkose...@gmail.com> > > Date: Wed, 13 Dec 2017 21:51:43 +0200 > > > > Hello! > > > > I have OpenBSD running on the RPi 3. Unfortunately SD card isn't > supported > > so I run from USB stick like everybody else. My blazing fast USB stick is > > really slow on RPi :( So I have some motivation to scratch my itch. > > > > I have some really early porting success with NetBSD SD card driver (my > > first in OpenBSD) from: > > > > http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/arm/ > broadcom/bcm2835_sdhost.c?rev=1.4&content-type=text/x- > cvsweb-markup&only_with_tag=MAIN > > > > Currently it does one thing. It shows up in dmesg. I would like to have > > some help. How the bus which the NetBSD driver talks to is implemented in > > OpenBSD is the main question. Do I have to make a lot of changes for it? > > Warning! The Pi has *two* different SD/SDIO controllers. Which one > is actually used to drive the card in the uSD slot depends on the > firmware and/or the device tree. You probably should check that the > controller you're writing the driver for is indeed used for the uSD > slot. I also believe only one of the controllers has a DMA engine, > which is pretty much essential for getting decent performance. I > think the other controller can use an external DMA engine, but at that > point things become really complicated. > > That said, NetBSD's SD/MMC stack is derived from OpenBSD's code so > porting drivers should be relatively easy. > >
