[coreboot] PCI interrupts and VGA?

ron minnich rminnich at gmail.com
Thu Nov 13 23:32:45 CET 2008

On Thu, Nov 13, 2008 at 1:27 PM, Myles Watson <mylesgw at gmail.com> wrote:

> Some of the differences are:
> 1. v2 sets interrupts, v3 doesn't (when and where should that happen?)

that seems like an error in v2.

> 2. v2 enables the other core in the Opteron, v3 doesn't yet (low priority
> for now)

we don't care yet ...

> It looks like the bridges are all set up correctly, but the VGA area
> 0xa0000-0xbffff isn't getting to the VGA card (If you look at the other
> mapping, it's not updated)
> The current status is:
> - Coreboot boots to the payload
> - VGA ROM is run
> - Screen turns black (initializes) (that means that the VGA IOs in the 0x3xx
> range are getting there.)
> - No output on screen

You can hardwire the vga in the resource map, I thought we did that anyway.

How much delta in lines of code are we talking about here?

I'm quite impressed.


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