Date: Fri, 30 Jun 2006 16:05:23 -0700 From: John-Mark Gurney <gurney_j@resnet.uoregon.edu> To: Matt Sealey <matt@genesi-usa.com> Cc: grehan@freebsd.org, freebsd-ppc@freebsd.org Subject: Re: FreeBSD 6.0 on Pegasos/ODW Message-ID: <20060630230523.GW82074@funkthat.com> In-Reply-To: <007601c69c5e$d33088b0$99dfdfdf@bakuhatsu.net> References: <44A53AAC.1080002@freebsd.org> <007601c69c5e$d33088b0$99dfdfdf@bakuhatsu.net>
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Matt Sealey wrote this message on Fri, Jun 30, 2006 at 11:04 -0500:
> Why isn't there an ISA bus attachment?
>
> We have an ISA bus on the Pegasos (Via 8231 southbridge)
Because FreeBSD's isa bus is still stuck back in the stone ages... It
still requires some magic isa_init function to be defined on a per
platform basis to setup the isa bus... There is currently no provision
to have multiple isa busses on FreeBSD which means that isa busses
behind a pci bridge don't automagicly get attached...
I have the same trouble w/ sun4v's isa bus, but since there isn't any
important hardware on the T2k attached to the isa bus I have done
nothing to attempt to support it...
> In all honesty the design of the system should be that while it there is
> some grunt work required, it is much the same as in Linux - when the driver
> doesn't exist on PPC you just symlink it from the i386 tree since all of
> the hardware already works in FreeBSD on a PC. I used to run FreeBSD 5.1 on
> a Via EPIA board, it had the exact same southbridge and peripheral chips
> and ran like a dream. Endianness notwithstanding it should be the same
> way.
>
> > -----Original Message-----
> > From: Peter Grehan [mailto:grehan@freebsd.org]
> > Sent: Friday, June 30, 2006 9:52 AM
> > To: matt@genesi-usa.com
> > Cc: freebsd-ppc@freebsd.org
> > Subject: Re: FreeBSD 6.0 on Pegasos/ODW
> >
> > > Building was a miserable failure. It went through and did the world
> > > and then the kernel failed first because driver "zs" wasn't
> > found (we
> > > commented out zs and put the 16550 uart in instead) and then it
> > > churned and puked on linking;
> >
> > The sio driver doesn't work on FreeBSD/ppc. It requires an
> > attachment to a bus somewhere (there's no ISA bus
> > attachment). I do have it sort-of working with the psim
> > simulator (with an 'iobus' attachment), but you've just hit
> > the fact that porting to a new platform with different
> > hardware than Macs doesn't come for free - there's always
> > going to be some development required.
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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