Re: [coreboot] VIA EPIA CN100000 is finally Working all.

[Corey Osgood]

On Feb 3, 2008 1:52 PM, Rudolf Marek  wrote:
> Hi Urbez,
> > Add the follow code to the end of the function main() in auto.c: if
> >
> > not, your normal IDE cannot use DMA and via-rhine, usb's, etc, not
> > works.
> >     //This enable the access of PCI devices to the PCI bus master?
> >     pci_write_config8(cn700->d0f7, 0x57, 0x20);//was 0x01
>
> I think this is connected to some last DRAM address stuff. DMA may not
> work if
> this is incorrect. Consult some similar datasheet
> jjj.ivn.pbz.gj!ra!qbjaybnqf!qngnfurrgf!puvcfrgf!QF_PA400_118.mvc
> It may be the last bank ending address??? Perhaps this must be copied from
> function 3 maybe?

Exactly
> > If you will that the FILO not confuses scanning PCI, you must add, to
> >
> > the end of main() in auto.c:
> > pci_write_config8(cn700->d1f0,0x19,0x1,CF8);//enable PCI-BRIGDE
> >
> > SECONDARY BUS
> >     pci_write_config8(cn700->d1f0,0x1a,0x1,CF8);
>
> Perhaps is something translating configuration cycles?
>
> Rudolf

Nope, secondary and subordinate bus number. But what's up with the CF8 at
the end of these commands?

-Corey