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

[Joseph Smith]

On Wed, 10 Nov 2010 19:29:45 -0800, Stefan Reinauer
 wrote:
> Sent from my mobile phone
>
> On 10.11.2010, at 17:36, Joseph Smith  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

low
> 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

graphics,
> not below 4G

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