Re: Proposed build system: PREP
On Mon, Oct 06, 2003 at 01:29:08PM +0200, Sven Luther wrote:
> 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 ?
Nope, GT64260 (A or B depending on where you look) from
Motorola's website.
Does anybody have the relevant datasheet?
Oh, I see my mistake, I had fuzzy memories of it and mixed up
Galileo and Discovery.
>
> BTW, the next generation of Pegasos boards will use the Marvell
> Discovery II northbridge.
In this case, it might be the same bridge. Great...
Regards,
Gabriel
BTW: there were SMP PreP boards, at least once upon a time Motorola
sold (or at least offered) SMP MTX boards and MVME4600 (2x604e).
Reply to: