[OpenBIOS] [PATCH] qemu better support

[Blue Swirl]

On 12/21/08, Laurent Vivier <laurent at lvivier.info> wrote:
>
>  Le 21 déc. 08 à 10:19, Blue Swirl a écrit :
>
>
>
> > On 12/21/08, Laurent Vivier <laurent at lvivier.info> wrote:
> >
> > >
> > > Le 21 déc. 08 à 09:31, Blue Swirl a écrit :
> > >
> > >
> > >
> > >
> > > > On 12/20/08, Laurent Vivier <laurent at lvivier.info> wrote:
> > > >
> > > >
> > > > > This patches copies all needed ppc files to qemu and modifies them.
> > > > >
> > > > > The generated OpenBIOS image must be loaded at adresse 0xfff00000 by
> > > > >
> > > >
> > > Qemu.
> > >
> > > >
> > > > >
> > > > > It is able to load Yaboot from disk and Yaboot is able to load
> Linux,
> > > > >
> > > >
> > > but
> > >
> > > >
> > > > > Linux hangs somewhere... of course it needs more work (but this
> cleans
> > > > >
> > > >
> > > up my
> > >
> > > >
> > > > > patch queue).
> > > > >
> > > > > Thank you to Blue Swirl and Aurélien Jarno for their help.
> > > > >
> > > > > Signed-off-by: Laurent Vivier <Laurent at lvivier.info>
> > > > >
> > > > >
> > > >
> > > > Thanks, applied as r301. The patch introduces new warnings, but I'll
> > > > fix them next.
> > > >
> > > >
> > >
> > > Thank you. Sorry for the warnings. Do you want I correct them ?
> > >
> >
> > Fixed in r302, everything is clean now.
> >
> > I noticed the part of ldscript in my version that avoids NVRAM was not
> > included, so there are attempts to execute code at 0xfff04000. Maybe
> > that causes some the problems you see?
> >
>
>  I don't know. But I realize I've integrated your patch partially. Could you
> correct this ?
>  There is the missing NVRAM part in the ldscript (and more...), and
> arch/ppc/qemu/start.S doesn't include the modification you made about the
> SRI vector.
>
>  Feel free to correct all of this as you want.

I fixed it in r303, now I get:

>> =============================================================
>> OpenBIOS 1.0RC1 [Dec 21 2008 10:01]
>> Initializing PCI devices...
>> 0:0.0 - 1057:2 - /pci/pci - pci
>> 0:1.0 - 1234:1111 - /pci/QEMU,VGA - QEMU,VGA
>> 0:2.0 - 10ec:8029 - /pci/NE2000 - NE2000
>> 0:3.0 - 1095:646 - /pci/pci-ata - pci-ata
>> ata-1: [io ports 0x100-0x107,0x182]
>>     drive1 [ATAPI cdrom]: QEMU DVD-ROM
>> ata-2: [io ports 0x200-0x207,0x282]
>> 0:4.0 - 106b:17 - /pci/mac-io - mac-io
>> nvram error detected, zapping pram
No disk found.
>> *** Boot failure! No secondary bootloader specified ***

Boot does not succeed, but we get to OpenBIOS prompt!