[LinuxBIOS] about make LinuxBIOS 64bit for Opteron

[Kevin O'Connor]

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