Geode GX1 and IRQ tables

Ronald G. Minnich rminnich at
Tue Mar 1 05:21:01 CET 2005

On Tue, 1 Mar 2005, Richard Smith wrote:

> I've found that Linux up to 2.6.9 (I haven't tested .10)  Dosen't do
> this fully.  With my 440bx chipset there are config registers in the
> northbridge that control which IRQ line each of the PCI PIRQ lines are
> routed to.  Even with a proper PIRQ table these registers are not setup
> and I get the same error reported.

that's whacky. The old linux did fine with 440bx. I never had to do 
anything but set up PIRQ tables. 

> I suggest you diff the output of lspci -xxx for the northbridge between
> linubios and factory bios and resolve all the differences with the
> datasheet.

on the geode 2.4.18 always worked, and if I patched linux for later 
linuxes, that worked fine too. 

What a mess PIRQ got to be .... 


More information about the coreboot mailing list