[coreboot] Rev 4099+ Broken Tree?

[Myles Watson]

On Fri, Apr 24, 2009 at 1:01 PM, ron minnich <rminnich at gmail.com> wrote:
> On Fri, Apr 24, 2009 at 11:56 AM, Rudolf Marek <r.marek at assembler.cz> wrote:
>
>> But why it works for the rest of memory? The rest of memory is never cleared.
>> Only to TOPK. Thats why I assumed its OK to change that and clear memory from
>> _RAMBASE to TOPK and not from 0 to TOPK
>
> Dont' forget that the systems we boot also do things to memory that
> can correctly set the ECC tags.
>
> I would have to see the sizes etc. and I can't look right now. But
> don't forget that linux, as it allocates pages, zeros them. I don't
> know all the places that memory is initialized in the kernel at this
> point. but it could be we've been lucky. I don't know.
>
> Anyway, you need to make that code a little smarter and, on cold boot,
> zero the low memory too.

Are we going to revert this bit for now, or do we have a way to fix it
in the works?

Thanks,
Myles