Re: filo on Tyan s2880

[Stefan Reinauer]

* SONE Takeshi  [031030 13:25]:
> On Thu, Oct 30, 2003 at 12:40:02PM +0100, Stefan Reinauer wrote:
> > SONE Takeshi  [031030 11:40]:
> > > On Thu, Oct 30, 2003 at 11:34:29AM +0100, Stefan Reinauer wrote:
> > > > I am using an etherboot payload that reads an elf image from
> > > > the first sectors on the disk. This works fine, I put filo there
> > > > so I can load a kernel from any filesystem. Unfortunately filo seems
> > > > to find no IDE controller, it says IDE channel 0 not found.
> > > > Etherboot and Linux can see the ide controller though (it's on bus 1)
> > >
> > > Maybe the problem is with my PCI code.
> > > Please send me the output log with DEBUG_ALL.
> >
> > You only seem to scan bus 0:
>
> Ok..
> My PCI scan routine starts from bus 0, and recurses when PCI bridges are
> found.  I think I took this algorithm from pciutils.
>
> However your board has only host bridges on bus 0, so FILO doesn't know
> if bus 1 exists.
>
> I checked Etherboot and it just scans bus 0 to 255 unconditionally.
> I don't know which is better.
> Anyway attached patch changes the PCI scan to Etherboot way.

Thanks. with this patch it also works using PCI.

Stefan

filo on Tyan s2880

[SONE Takeshi]

On Thu, Oct 30, 2003 at 01:32:49PM +0100, Stefan Reinauer wrote:
> > I checked Etherboot and it just scans bus 0 to 255 unconditionally.
> > I don't know which is better.
> > Anyway attached patch changes the PCI scan to Etherboot way.
>
> Thanks. with this patch it also works using PCI.

I'll make this a Config option (turned off by default) in the next version.

filo on Tyan s2880

[Stefan Reinauer]

* SONE Takeshi  [031030 18:36]:
> On Thu, Oct 30, 2003 at 01:32:49PM +0100, Stefan Reinauer wrote:
> > > I checked Etherboot and it just scans bus 0 to 255 unconditionally.
> > > I don't know which is better.
> > > Anyway attached patch changes the PCI scan to Etherboot way.
> >
> > Thanks. with this patch it also works using PCI.
>
> I'll make this a Config option (turned off by default) in the next version.

Hm.. just had the idea.. maybe it makes sense to use no-pci mode if no
pci controller can be found?

Stefan

filo on Tyan s2880

[Takeshi Sone]

On Fri, Oct 31, 2003 at 10:03:09PM +0100, Stefan Reinauer wrote:
> Hm.. just had the idea.. maybe it makes sense to use no-pci mode if no
> pci controller can be found?

That sounds like a symptomatic treatment.
Maybe I can do this but with a big fat warning would be displayed.
We have to fix the PCI, not the symptom (IDE).