Lots of memory on 826x

[Rune Torgersen]

I can use 1GB of RAM now, if I move kernel base to 0xA0000000 and set 
lowmem size to 1GB. (No Highmem at all)

> -----Original Message-----
> From: Matt Porter [mailto:mporter at kernel.crashing.org] 
> Sent: Tuesday, March 08, 2005 17:30
> To: Rune Torgersen
> Cc: Kumar Gala; linuxppc-embedded at ozlabs.org
> Subject: Re: Lots of memory on 826x

> Ahh, but early ioremaps (before mm is inited) grow down from 
> PKMAP_BASE,
> so you will be overlapping the top of lowmem with those allocations.
> It wants to be above vmalloc space.  Set HIGHMEM_START to 0xF6000000,
> IMMR/IO to 0xF8000000 and you then have vmalloc space between
> 0xF1000000-0xF5FFFFFF.

I'll try this tomorrow and see what happens. 
(Still need to make sure our board supports 2GB....:)