[LinuxBIOS] [PATCH] Detect RAM size on qemu target

[Ed Swierk]

The attached patch changes the qemu northbridge.c to read the RAM size
from the i440 PCI bridge configuration registers. This is mostly a
copy-and-paste from the i440bx northbridge.c.

Unfortunately the current version of qemu does not set these
registers, but I have patched qemu so that it emulates the i440 more
faithfully in this regard. The LinuxBIOS patch preserves the existing
behavior--hardcoding the RAM size to 64 MB--when running on an
unpatched qemu.

I have submitted the qemu patch to the qemu-devel list, and will also
include it in my HOWTO.

--Ed