Re: Dealing with RAM not starting at 0x00000000

[Ralf Baechle <ralf@linux-mips.org>]

On Tue, Feb 01, 2005 at 03:06:29PM +0530, Nori, Soma Sekhar wrote:

> I am working towards porting 2.6.10 kernel on a mips 4kec based board
> which has physical memory starting at 0x14000000.
> What is the best way to overcome the "hole" from 0x00000000 to
> 0x14000000 without incuring a huge memory overhead.
> (For exception handling there is 4k of RAM kept at 0x00000000 also - but
> I guess linux paging need need not be aware of this small RAM)

You can set PAGE_OFFSET to 0x94000000.  If you do this you're probably
going to run into a few bugs where PAGE_OFFSET is assumed to be KSEG0,
that is 0x80000000.  Nothing dramatic though.

  Ralf