Re: Proposed build system: PREP
On Mon, Oct 06, 2003 at 01:16:23PM +0200, Gabriel Paubert wrote:
> On Mon, Oct 06, 2003 at 11:43:59AM +0100, Leigh Brown wrote:
> > Sven Luther said:
> > > Could you test the prep kernel at :
> > > http://people.debian.org/~luther/powerpc/2.4.22, and instruct us about :
> > >
> > > 1) The different method of booting from a prep system.
> > >
> > > 2) if there are auto-booting CDroms, or if you just have to enter the
> > > right value from the OF (in case you have an OF).
> > >
> > > 3) the output of your /proc/cpuinfo.
> > >
> > > 4) do you believe they are smp prep systems ?
> > >
> > > And if you would volunteer to test some of our debian-installers setups
> > > when they are ready, it would be real nice.
> >
> > Hi Sven,
> >
> > I know there are several RS/6000 PReP systems around, and that there
> > are people running Debian on them. The 7043-140 should boot okay on
> > the 2.4.22 kernel, and I'll try your test kernel when I get a chance,
> > on mine. There are also some other RS/6000 PReP models that work, but
> > require some kernel patches. They are:
> >
> > 7248-133
> > 7024-E20
> > 7024-E30
> > 7025-F30
> > 7025-F40
> > 7043-240
> >
> > There might be others.
> >
> > All these RS/6000's can boot off CD-ROM if the PReP kernel has been
> > configured using the mkisofs -prep-boot option. The 7034-240 and
> > 7025-F40 support up to two CPUs, but the PReP boot loader doesn't
> > know how to bootstrap the second CPUs on these machines.
> >
> > I also have a Motorola PowerStack that is PReP, and it should work
> > with a stock kernel as well. There is support in the PReP boot
> > loader for an SMP Motorola machine, but I've never seen such a
> > beast.
>
> The MVME machines I have (2400 and 2600 series) are essentially
> PreP although the configuration is called PowerPlus in the kernel
> for some reasons. The MVME5100 is also the same AFAICT although it has
> a different configuration of the host bridge at startup (more
> CHRP like, but residual data and no OF).
>
> I find it quite stupid to distinguish them from PreP only because
> they have a different host bridge (Raven/Falcon/Hawk). This said
> I wrote my own bootloader for them which never made it to the
> official tree for several reasons but mostly my fault (I'm very
> bad at pushing changes and "marketing", although my bootloader has
> some nice features that no other has).
So, they will not boot with the current common powerpc kernel, no ?
Would it make sense for me to include the patches in the common powerpc
kernel, or not ? And what do they use for booting, what filesystem ?
What is in the /proc/cpuinfo machine field ?
> The MVME5500 is a completely different beast (it should be
> available now or soon), with a Marvell Galileo host bridge.
Is this the one called GT-64130 or GT-64131 ?
BTW, the next generation of Pegasos boards will use the Marvell
Discovery II northbridge.
Friendly,
Sven Luther
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