Module Name: src
Committed By: macallan
Date: Fri Apr 2 16:59:59 UTC 2021
Modified Files:
src/sys/arch/powerpc/oea: ofwoea_machdep.c
Log Message:
clarify comment in previous
( this is a hack, should go away when the root cause is fixed etc. )
no functional change
To generate a diff of this commit:
cvs rdiff -u -r1.60 -r1.61 src/sys/arch/powerpc/oea/ofwoea_machdep.c
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/powerpc/oea/ofwoea_machdep.c
diff -u src/sys/arch/powerpc/oea/ofwoea_machdep.c:1.60 src/sys/arch/powerpc/oea/ofwoea_machdep.c:1.61
--- src/sys/arch/powerpc/oea/ofwoea_machdep.c:1.60 Thu Apr 1 22:02:20 2021
+++ src/sys/arch/powerpc/oea/ofwoea_machdep.c Fri Apr 2 16:59:59 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: ofwoea_machdep.c,v 1.60 2021/04/01 22:02:20 macallan Exp $ */
+/* $NetBSD: ofwoea_machdep.c,v 1.61 2021/04/02 16:59:59 macallan Exp $ */
/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ofwoea_machdep.c,v 1.60 2021/04/01 22:02:20 macallan Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ofwoea_machdep.c,v 1.61 2021/04/02 16:59:59 macallan Exp $");
#include "ksyms.h"
#include "wsdisplay.h"
@@ -379,9 +379,12 @@ restore_ofmap(void)
continue;
/*
- * XXX
- * my beige G3 throws a DSI trap if we try to map the last page
- * of the firmware ROM
+ * XXX macallan@
+ * My beige G3 throws a DSI trap if we try to map the last page
+ * of the 32bit address space. On old world macs the firmware
+ * ROM occupies 4MB at 0xffc00000, triggering it when we
+ * restore OF translations. This just works around a bug
+ * elsewhere in pmap and should go away once fixed there.
*/
if (pa == 0xffc00000 && size == 0x400000)
size = 0x3ff000;
