Porting FreeBSD to the Neo1973 (arm920t)
Warner Losh
imp at bsdimp.com
Tue Sep 18 09:02:43 PDT 2007
From: Marius Nuennerich <marius.nuennerich at gmx.de>
Subject: Re: Porting FreeBSD to the Neo1973 (arm920t)
Date: Tue, 18 Sep 2007 17:16:01 +0200
> On Tue, 18 Sep 2007 07:54:31 -0600 (MDT)
> "M. Warner Losh" <imp at bsdimp.com> wrote:
>
> > In message: <20070918115334.569521c1 at sol.hackerzberg.local>
> > Marius Nuennerich <marius.nuennerich at gmx.net> writes:
> > : Hi all,
> > :
> > : Andrew Turner and me are currently exploring what to do about getting
> > : FreeBSD to run on the Neo1973. Andrew put up some first instructions
> > : here: http://wiki.openmoko.org/wiki/FreeBSD
> > :
> > : Much information about the hardware can be found in that wiki. We are
> > : currently stuck after loading the kernel because there is no
> > : framebuffer driver (yet) and the uart is not working.
> > :
> > : I'm using qemu right now because I have no hardware yet.
> >
> > Are there instructions for that posted somewhere. Last time I tried
> > to get it going I hit all kinds of snags.
>
> Just checkout https://svn.openmoko.org/trunk/src/host/qemu-neo1973 with
> subversion and do this:
> http://wiki.openmoko.org/wiki/Talk:OpenMoko_under_QEMU#FreeBSD_and_Qemu...
>
> Then run openmoko/download.sh and openmoko/flash.sh if you have all the
> dependencies it should work.
I'll take a look at these... I think there might be some of this
integrated into the qemu-devel port, but maybe I'm misremebering the
commit messages.
> > : Any idea what to do next? How to get the uart working? And how to tell
> > : the kernel to use it as console?
> >
> > Chances are very good that you'll need more than just the uart. The
> > uart for the samsung devices will need a driver written for it.
> > You'll also need to initialize memory in some way that's unique for
> > this SoC
>
> Uh, I thought that this could happen. I have no experience with drivers
> like this. But at least it's documented in the User Manual from
> Samsung.
Yes. There's also a console driver (but not serial port driver) in
NetBSD right now for at least earlier versions of the Samsung part's
uart.
> > : Many Thanks
> > : Marius
> > :
> > : P.S. Should I have posted this to freebsd-arm?
> >
> > This is radically cool!
> >
> > I'd love to see FreeBSD going on this phone, and would help out as
> > best I can. I was going to buy one, but my cash flow won't allow it
> > until I can sell some real estate :-(.
>
> Hehe, similar problem here. I wait for the next hardware version as one
> should be able to use gps without a linux blob.
Maybe I should wait for it as well :-)
btw, the project offers p4 services for people that are doing cool
work. This would qualify. The arm-devel p4 branch has many items
that are being polished for integration into the tree, and this seems
like a good place to do the neo work. I did all my atmel work on a p4
branch...
Warner
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