[coreboot] [PATCH] Avoid hang when 4GB or more DRAM is installed on AMD RS780 UMA systems

Joseph Smith joe at settoplinux.org
Thu Nov 11 13:04:28 CET 2010

On Wed, 10 Nov 2010 19:29:45 -0800, Stefan Reinauer
<stefan.reinauer at coresystems.de> wrote:
> Sent from my mobile phone
> On 10.11.2010, at 17:36, Joseph Smith <joe at settoplinux.org> wrote:
>> Not so sure about AMD chips but I know Intel chips reserve memory just
> below 4Gb for vga buffer. As for resource ranges Intel chips reserve a
> memory range for VESA IO registers and a high memory range for GMCH MMIO
> registers. Hope that helps.
> Actually the intel chipsets reserve memory at the top of ram for
> not below 4G

Ah your right, my bad. It is just below TOM. ex: [rest of memory][vga
memory area][tom]. 
Joseph Smith

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