Author: rminnich
Date: 2006-09-18 06:23:23 +0200 (Mon, 18 Sep 2006)
New Revision: 2419
Modified:
trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c
Log:
A fix for hynix dram problems seen at 366/244
Modified: trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c
===================================================================
--- trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c 2006-09-15 23:14:37 UTC
(rev 2418)
+++ trunk/LinuxBIOSv2/src/northbridge/amd/gx2/raminit.c 2006-09-18 04:23:23 UTC
(rev 2419)
@@ -85,6 +85,14 @@
/* load RDSYNC */
msr = rdmsr(0x2000001f);
msr.hi = 0x000ff310;
+ /* the above setting is supposed to be good for "slow" ram. We have
found that for
+ * some dram, at some clock rates, e.g. hynix at 366/244, this will
actually
+ * cause errors. The fix is to just set it to 0x310. Tested on 3 boards
+ * with 3 different type of dram -- Hynix, PSC, infineon.
+ * I am leaving this comment here so that at some future time nobody is
tempted
+ * to mess with this setting -- RGM, 9/2006
+ */
+ msr.hi = 0x00000310;
msr.lo = 0x00000000;
wrmsr(0x2000001f, msr);
--
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