Since traditionally the mips kernel could only manage RAM reachable by
Kseg you were limited to 512MB, right? But now the High Memory stuff is
stable enough that you can reach any RAM that's physically addressable
in 32-bits. And after that, there's the 64bit-physical-address
extension which allows you to reach physical pages that need > 32-bits
Daniel Jacobowitz wrote:
> On Wed, May 15, 2002 at 02:34:47PM -0700, Matthew Dharm wrote:
> > So... I'm looking at porting Linux to a system with 1.5GiB of RAM.
> > That kinda blows the 32-bit MIPS port option right out of the water...
> Not unless you count bits differently than I do... 32-bit is 4 GiB. Is
> there any reason MIPS has special problems in this area?
> > What does it take to do a 64-bit port? The first problem I see is the
> > boot loader -- do I have to be in 64-bit mode when the kernel starts,
> > or can I start in 32-bit mode and then transfer to 64-bit mode?
> > I looked in the arch/mips64/ directory, but I don't see much for
> > specific boards there, but there are references to the Malta
> > boards....
> > Matt
> > --
> > Matthew D. Dharm Senior Software Designer
> > Momentum Computer Inc. 1815 Aston Ave. Suite 107
> > (760) 431-8663 X-115 Carlsbad, CA 92008-7310
> > Momentum Works For You www.momenco.com
> Daniel Jacobowitz Carnegie Mellon University
> MontaVista Software Debian GNU/Linux Developer