[commit] r6339 - trunk/src/cpu/amd/model_fxx

[repository service]

Author: oxygene
Date: Thu Feb 10 08:48:07 2011
New Revision: 6339
URL: https://tracker.coreboot.org/trac/coreboot/changeset/6339

Log:
Fix a potential system hang by handling AMD Model F Erratum 89
a bit later.

Signed-off-by: Josef Kellermann 
Acked-by: Alexandru Gagniuc

Modified:
   trunk/src/cpu/amd/model_fxx/model_fxx_init.c

Modified: trunk/src/cpu/amd/model_fxx/model_fxx_init.c
==============================================================================
--- trunk/src/cpu/amd/model_fxx/model_fxx_init.c	Tue Feb  8 17:07:49 2011	(r6338)
+++ trunk/src/cpu/amd/model_fxx/model_fxx_init.c	Thu Feb 10 08:48:07 2011	(r6339)
@@ -384,23 +384,6 @@
    	wrmsr_amd(DC_CFG_MSR, msr);

}
-	/* I can't touch this msr on early buggy cpus */
-	if (!is_cpu_pre_b3()) {
-
-		/* Erratum 89 ... */
-		msr = rdmsr(NB_CFG_MSR);
-		msr.lo |= 1 << 3;
-
-		if (!is_cpu_pre_c0() && is_cpu_pre_d0()) {
-			/* D0 later don't need it */
-			/* Erratum 86 Disable data masking on C0 and
-			 * later processor revs.
-			 * FIXME this is only needed if ECC is enabled.
-			 */
-			msr.hi |= 1 << (36 - 32);
-		}
-		wrmsr(NB_CFG_MSR, msr);
-	}

/* Erratum 97 ... */
    if (!is_cpu_pre_c0() && is_cpu_pre_d0()) {
@@ -445,7 +428,28 @@
    	msr.hi |= 1;
    	wrmsr_amd(CPU_ID_EXT_FEATURES_MSR, msr);
    }
+	
+#if CONFIG_K8_REV_F_SUPPORT == 0
+		/* I can't touch this msr on early buggy cpus */
+	if (!is_cpu_pre_b3())
+#endif
+	{

+		/* Erratum 89 ... */
+		msr = rdmsr(NB_CFG_MSR);
+		msr.lo |= 1 << 3;
+#if CONFIG_K8_REV_F_SUPPORT == 0
+		if (!is_cpu_pre_c0() && is_cpu_pre_d0()) {
+			/* D0 later don't need it */
+			/* Erratum 86 Disable data masking on C0 and
+			 * later processor revs.
+			 * FIXME this is only needed if ECC is enabled.
+			 */
+			msr.hi |= 1 << (36 - 32);
+		}
+#endif
+		wrmsr(NB_CFG_MSR, msr);
+	}
    /* Erratum 122 */
    msr = rdmsr(HWCR_MSR);
    msr.lo |= 1 << 6;