RE: Lots of memory on 826x

Yay... It worked....
Had to patch m8260_setup a bit.

In m8260_map_io() I changed
	io_block_mapping(addr, addr, 0x10000000, _PAGE_IO);
into
	io_block_mapping(addr, addr, 0xffffffff - addr + 1, _PAGE_IO);=20

So that I could change the IMMR address in my config file only, and the
mappings were still correct.

I could probably submit a proper patch.

quoted

-----Original Message-----
From: Matt Porter [mailto:mporter@kernel.crashing.org]=20
Sent: Tuesday, March 08, 2005 17:30
To: Rune Torgersen
Cc: Kumar Gala; linuxppc-embedded@ozlabs.org
Subject: Re: Lots of memory on 826x

=20

quoted

Ahh, but early ioremaps (before mm is inited) grow down from=20
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=20

0xF6000000,

quoted

IMMR/IO to 0xF8000000 and you then have vmalloc space between
0xF1000000-0xF5FFFFFF.

=20
I'll try this tomorrow and see what happens.=20
(Still need to make sure our board supports 2GB....:)