Re: [OpenBIOS] openfirmware boot partition layout

[Andreas Färber]

Am 16.02.2011 um 16:06 schrieb Dinar Valeev:
> On Wed, Feb 16, 2011 at 3:53 PM, Mark Cave-Ayland
>  wrote:
> > On 16/02/11 13:23, Dinar Valeev wrote:
> > > > Okay - first question to ask is this: which version of KVM and  
> > > > which SVN
> > > > revision of OpenBIOS are you using? There has a been a lot of  
> > > > work in
> > > > this
> > > > area last year for example.
> > >
> > > I'm using kvm with 2.6.38-rc3-67365-g7a67422 kernel
> > >
> > > mine qemu version is:
> > > QEMU emulator version 0.14.50, Copyright (c) 2003-2008 Fabrice  
> > > Bellard
> > >
> > > I believe this is most recent version.
> >
> > Ooooh okay but since you're using ppc64, you're going to have to  
> > build from
> > SVN trunk - the changes are that recent! BTW I thought the latest  
> > qemu/kvm
> > version was 0.13.x, i.e. 0.14.x is still currently at RC stage at  
> > least in
> > qemu world.
>
> Will try to build svn version of openbios.
> > > > Note that you can get more debugging output from OpenBIOS if you  
> > > > load up
> > > > KVM
> > > > with a couple of extra options on the command line: -nographic
> > > > -prom-env='auto-boot?=false'. This will enable you to see the debug
> > > > output,
> > > > and also drops you to the Forth command prompt rather than trying  
> > > > to boot
> > > > the device automatically.
> > > >
> > > > You can then try manually booting a PPC partition, e.g.
> > > >
> > > > boot cdrom:1
> > > > boot disk:2
> > > > boot
> > > >
> > > > etc.
> > > >
> > > > Or even browse some of the filesystem contents to see if the FS is
> > > > recognised:
> > > >
> > > > dir cdrom:1\
> > > > dir disk:2\
> > >
> > > My qemu command is:
> > > ./ppc64-softmmu/qemu-system-ppc64 -enable-kvm -drive
> > > file=/root/k0daz_ppc_lvm_appliance.ppc64-1.0.1.raw -cpu power4
> > > -nographic -prom-env 'auto-boot?=false'
> > >
> > > Once I'm in OF prompt I've tried to invoke:
> > > 0>  dir disk:1\ pc-parts: Unable to determine filesystem
> > >  ok
> >
> > So that's easy - OpenBIOS can't work out what the filesystem on the
> > partition is.
>
> Just little finding.
>
> So If I try to boot from iso without disk image attached then it  
> boot's fine:
> 0 > dir cdrom:\suseboot\
>      2048 2011-02-08 23:16:17 .\
>      2048 2011-02-08 23:16:17 ..\
>       154 2011-02-08 23:16:17 yaboot.cnf
>    405028 2011-02-08 23:16:17 yaboot.ibm
> ok
> 0 > boot cdrom:\suseboot\yaboot.ibm
> yaboot starting: loaded at 00040000 000657a8 (0/0/fff02464; sp:  
> 07de7ff0)
> Config file 'yaboot.cnf' read, 154 bytes
>
> Welcome to yaboot version r22.8-r1190.SuSE
>
> But if I boot with disk image attached Then it just hangs.
> > > =============================================================
> > > OpenBIOS 1.0 [Feb 9 2011 21:07]
> > > Configuration device id QEMU version 1 machine id 3
> > > CPUs: 1
> > > Memory: 128M
> > > UUID: 00000000-0000-0000-0000-000000000000
> > > CPU type PowerPC,POWER4
>
> Welcome to OpenBIOS v1.0 built on Feb 9 2011 21:07
>
> 0 > boot cdrom:\suseboot\yaboot.ibm

And you're sure you disabled the default iso9660 driver? It was  
reported non-working, cf.
http://repo.or.cz/w/openbios/afaerber.git/commitdiff/072a920ae2f506f6c02c109...

Andreas