I don't suppose anyone has a primer or white paper on the High Memory
stuff? i.e. Applications, requirements, or a quick HOWTO?
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
> -----Original Message-----
> From: kwalker@broadcom.com [mailto:kwalker@broadcom.com]
> Sent: Wednesday, May 15, 2002 2:56 PM
> To: Matthew Dharm
> Cc: Linux-MIPS
> Subject: Re: MIPS 64?
>
>
>
> 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
> to address.
>
> Kip
>
> 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
>
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