CoreBoot Kernel Log:
[ 0.412025] PCI: Bridge: 0000:00:01.0
[ 0.416027] IO window: 1000-1fff
[ 0.420032] MEM window: 0xfc500000-0xfc6fffff
[ 0.427975] PREFETCH window: 0x00000000f0000000- 0x00000000f7ffffff
[ 0.440718] PCI: Bridge: 0000:00:04.0
[ 0.448082] IO window: 2000-2fff
[ 0.454929] MEM window: 0xfc700000-0xfc7fffff
[ 0.464029] PREFETCH window: disabled.
[ 0.471919] PCI: Bridge: 0000:00:07.0
[ 0.479285] IO window: 3000-3fff
[ 0.486133] MEM window: 0xfc000000-0xfc4fffff
[ 0.495233] PREFETCH window: disabled.
[ 0.503122] PCI: Bridge: 0000:00:14.4
[ 0.510485] IO window: disabled.
[ 0.517322] MEM window: disabled.
[ 0.524338] PREFETCH window: disabled.

Closed BIOS:
[ 0.412025] PCI: Bridge: 0000:00:01.0
[ 0.416027] IO window: c000-cfff
[ 0.420032] MEM window: 0xfdd00000-0xfdefffff
[ 0.427975] PREFETCH window: 0x00000000d0000000- 0x00000000dfffffff
[ 0.440718] PCI: Bridge: 0000:00:04.0
[ 0.448082] IO window: e000-efff
[ 0.454929] MEM window: 0xfda00000-0xfdafffff
[ 0.464029] PREFETCH window: 0x00000000fd900000 - 0x00000000fd9fffff
[ 0.471919] PCI: Bridge: 0000:00:07.0
[ 0.479285] IO window: d000-dfff
[ 0.486133] MEM window: 0xfd000000-0xfd7fffff
[ 0.495233] PREFETCH window: 0x00000000fdf00000-0x00000000fdffffff
[ 0.503122] PCI: Bridge: 0000:00:14.4
[ 0.510485] IO window: b000-bffff
[ 0.517322] MEM window: 0xfdc00000-0xfdcfffff
[ 0.524338] PREFETCH window: 0x00000000fdb00000-0x00000000fdbfffff

There are some pretty big differences. If we can explain them away great! if not, it would seem we have an allocation problem somewhere.

Thanks,
Dan Lykowski

From: Stefan Reinauer <stepan@coresystems.de>
To: Dan Lykowski <engineerguy3737@yahoo.com>
Cc: coreboot@coreboot.org
Sent: Sunday, February 1, 2009 4:52:26 PM
Subject: Re: [coreboot] Bridge Mem Window/Prefetch Window

Dan Lykowski wrote:
> Can anyone point me in the right direction as to where the Bridge Mem
> Window/Prefetch Window PCI configurations are defined/setup/used/etc.
> Coreboot does not set these correctly in my case. ( As compared to the
> standard BIOS )
>
What's the difference?

Stefan

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