Please don't do that on amd8131_800Mhz.
Also I suggest you need to check the CPU rev to decide if set to 1GMhz.
That bit only control x4 DIMM, So please don't do that on x8 or x16. All the
Normal BIOS only compare that to 4 only, and AMD document only said x4
Should be OK.
From: Stefan Reinauer [mailto:email@example.com]
Sent: Wednesday, January 26, 2005 2:17 AM
Subject: Hypertransport Speed
I would like to check the applied patch into LinuxBIOS CVS if
nobody happens to disagree loudly:
1) hypertransport clocking
This patch allows to disable the speed cuts during hypertransport
setup using cmos variables "amdk8_1GHz" and "amd8131_800MHz".
I've tried them on hardware which worked perfectly fine
with the higher speed links for both devices (K8 and 8131).
Since it is disabled per default and needs cmos and compile time
activation, it will not break anything.
2) ram init
This patch allows to use 8x (and probably 16x) dimms with LinuxBIOS
This patch will print the pci vendor/device id in
which makes determining the early bus structure a lot easier.
It also only prints the first 128 bytes of SPDROM during
dump_spd_registers() since they are defined to be 128byte.