[LinuxBIOS] r2419 - trunk/LinuxBIOSv2/src/northbridge/amd/gx2

[svn at openbios.org]

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);