[coreboot] [PATCH] v3: fix PCI bus scan / device tree interaction

Myles Watson mylesgw at gmail.com
Mon Sep 8 20:27:42 CEST 2008

2008/8/30 Stefan Reinauer <stepan at coresystems.de>

> ron minnich wrote:
> > so let's do this. Use the new v2 device tree visualizer on serengeti
> > and see how it looks.
> >
> With a little for loop I was able to produce images for all mainboards
> http://www.coresystems.de/~stepan/devicetree/dot<http://www.coresystems.de/%7Estepan/devicetree/dot>
> http://www.coresystems.de/~stepan/devicetree/fdp<http://www.coresystems.de/%7Estepan/devicetree/fdp>

Thanks Stefan,

This is really helpful.  I think it would be great if there were some way to
color or designate devices per chip.  I was looking at
http://www.coresystems.de/~stepan/devicetree/dot/static-tyan_s2892.png and I
couldn't see the second Opteron.  Am I missing something?  If each chip were
colored or enclosed in a box it seems like it would make it easier.

Looking at
http://www.coresystems.de/~stepan/devicetree/dot/static-tyan_s2895.png I see
the second Opteron's northbridge_amd_amdk8 and it's related 6 pci functions,
but I don't see two cpu_amd_socket940 apic or chip constructs.


> This patch creates static.dot visualizing the coreboot device tree (v2)
> I created it do debug problems with the device/resource allocator.
> create pngs with
>  $ fdp -o static.png -Tpng static.dot
> or
>  $ dot -o static.png -Tpng static.dot
> TODO/ideas:
>  re-introduce colored links again, dropped for now
>  node colors according to device type?
>  add an agenda
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