[src/trunk]: src/sys/arch/sparc/stand/boot compat mode: skip double map at VA...

[pk <pk%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/1a1858c12df6
branches:  trunk
changeset: 565435:1a1858c12df6
user:      pk <pk%NetBSD.org@localhost>
date:      Thu Apr 08 07:35:34 2004 +0000

description:
compat mode: skip double map at VA 0 if the physical load address is 0.
This allows a much wider range of historic kernels to be booted (w/ `-C').

diffstat:

 sys/arch/sparc/stand/boot/boot.c |  4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diffs (18 lines):

diff -r 6e0a1faac793 -r 1a1858c12df6 sys/arch/sparc/stand/boot/boot.c
--- a/sys/arch/sparc/stand/boot/boot.c  Thu Apr 08 07:24:26 2004 +0000
+++ b/sys/arch/sparc/stand/boot/boot.c  Thu Apr 08 07:35:34 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: boot.c,v 1.18 2003/08/07 16:29:46 agc Exp $ */
+/*     $NetBSD: boot.c,v 1.19 2004/04/08 07:35:34 pk Exp $ */
 
 /*-
  * Copyright (c) 1982, 1986, 1990, 1993
@@ -217,7 +217,7 @@
                        goto out;
                }
 
-               if (pmap_map(0, pa, size) != 0) {
+               if (pa != 0 && pmap_map(0, pa, size) != 0) {
                        error = EFAULT;
                        goto out;
                }