Module Name: src
Committed By: kiyohara
Date: Sat Aug 28 04:12:40 UTC 2010
Modified Files:
src/sys/arch/evbarm/gumstix: gumstix_start.S
Log Message:
Disable L2 Cache when boot time.
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/arch/evbarm/gumstix/gumstix_start.S
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/evbarm/gumstix/gumstix_start.S
diff -u src/sys/arch/evbarm/gumstix/gumstix_start.S:1.7 src/sys/arch/evbarm/gumstix/gumstix_start.S:1.8
--- src/sys/arch/evbarm/gumstix/gumstix_start.S:1.7 Sat Jul 10 08:17:48 2010
+++ src/sys/arch/evbarm/gumstix/gumstix_start.S Sat Aug 28 04:12:40 2010
@@ -1,4 +1,4 @@
-/* $NetBSD: gumstix_start.S,v 1.7 2010/07/10 08:17:48 kiyohara Exp $ */
+/* $NetBSD: gumstix_start.S,v 1.8 2010/08/28 04:12:40 kiyohara Exp $ */
/*
* Copyright (C) 2005, 2006 WIDE Project and SOUM Corporation.
* All rights reserved.
@@ -195,6 +195,11 @@
orr r0, r0, #CPU_CONTROL_SYST_ENABLE
#endif
#if defined(CPU_CORTEXA8)
+ /* Disable L2 cache beforehand. */
+ mrc p15, 0, r1, c1, c0, 1
+ bic r1, r1, #0x2 /* clear L2EN */
+ mcr p15, 0, r1, c1, c0, 1
+
orr r0, r0, #CPU_CONTROL_AFLT_ENABLE | CPU_CONTROL_DC_ENABLE
orr r0, r0, #CPU_CONTROL_BPRD_ENABLE | CPU_CONTROL_IC_ENABLE
#endif
