Re: [coreboot] Bridge Mem Window/Prefetch Window

[Dan Lykowski]

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 
To: Dan Lykowski 
Cc: [e-mail]
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