On Mon, Aug 04, 2008 at 01:58:47PM +0200, Carl-Daniel Hailfinger wrote:
Gigabyte M57SLI rev 2.0 uses the LPC-to-SPI translation feature of the IT8716F which can only map the top (not a movable window!) 512 kBytes of the SPI chip in memory space. There's an additional 128 kByte region (from 4G-1152kB to 4G-1024kB, not movable) which is sort of a "register space" compatibility feature. Everything outside these "standard" areas needs to be read with explicit read commands in 3-byte chunks.
So any modded M57SLI with a chip greater than 512kB has this problem. I tried every possible undocumented workaround to no avail, and contacted ITE with no response.
There is a patch by Ronald Hoogeboom with a workaround, which allows booting from larger rom chips:
http://article.gmane.org/gmane.linux.bios/33492
I'd still like to put it in the tree.
Thanks, Ward.