Re: [LinuxBIOS] about make LinuxBIOS 64bit for Opteron

[yhlu]

We can exit from 64bit....and don't need to warmrest.

in 64bit need one 4k page table level 4. I don't if we can put that in
cache at Cache as ram stage...., will try it some time several month
later..

YH

On 12/17/05, Kevin O'Connor  wrote:
> On Fri, Dec 16, 2005 at 04:42:53PM -0700, Eric W. Biederman wrote:
> > > Lu, Yinghai wrote:
> > > > The problem is that we may need make Etherboot and mkelfImage to support
> > > > 64 bit too...
> >
> > As for Etherboot and mkelfImage.  Etherboot can already load a 64bit
> > payload.  Basically just make the ELF loader capable of handling
> > a 32bit or a 64bit target.
>
> If linuxbios uses 64bit mode, does that mean the payload must be
> 64bit?
>
> Is it possible to put the opteron back into 32-bit mode (for example
> with a cpu reset followed by a warm-reset check at linuxbios start)?
>
> -Kevin