Re: [coreboot] The default value of TOM (MSRC001_001A) just after Power-On

[Darmawan Salihun]

Hi Mark,

Thanks. I'll have a look.

-Darmawan

On 1/22/10, Marc Jones  wrote:
> On Wed, Jan 20, 2010 at 2:13 AM, Darmawan Salihun
>  wrote:
> > The default value of MSRC001_001A (Top of Memory below the 4GB limit)
> > according to BKDG for AMD Fam 10h rev. 3.06 is undefined (after
> > Reset/power-on).
> > However, AMD64 Architecture Programmer's Manual Volume 2: System
> > Programming Rev. 3.14 states that the value of MSRC001_001A
> > after Reset or power on is: 0000_0000_0400_0000h
> >
> > Which one of this information is correct?
> >
> > I need to know it because I want to know what is the default MMIO range
> > after reset.
>
> Hi Darmawan,
>
> I think that the BKDG is correct.  I get 000_0001F_7780_0000 on a K8.
> You can take a look at cpu/amd/car/cache_as_ram.inc for the initial
> setup.
>
> Marc