[src/trunk]: src/sys/arch/powerpc/oea Disable XBSEN for the 7450.

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

details:   https://anonhg.NetBSD.org/src/rev/fed7ccca4124
branches:  trunk
changeset: 790159:fed7ccca4124
user:      matt <matt%NetBSD.org@localhost>
date:      Sun Sep 22 18:49:10 2013 +0000

description:
Disable XBSEN for the 7450.

diffstat:

 sys/arch/powerpc/oea/cpu_subr.c |  21 +++++++++++----------
 1 files changed, 11 insertions(+), 10 deletions(-)

diffs (56 lines):

diff -r e6af2e30c06d -r fed7ccca4124 sys/arch/powerpc/oea/cpu_subr.c
--- a/sys/arch/powerpc/oea/cpu_subr.c   Sun Sep 22 18:05:16 2013 +0000
+++ b/sys/arch/powerpc/oea/cpu_subr.c   Sun Sep 22 18:49:10 2013 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu_subr.c,v 1.77 2013/09/22 18:05:16 matt Exp $       */
+/*     $NetBSD: cpu_subr.c,v 1.78 2013/09/22 18:49:10 matt Exp $       */
 
 /*-
  * Copyright (c) 2001 Matt Thomas.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.77 2013/09/22 18:05:16 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.78 2013/09/22 18:49:10 matt Exp $");
 
 #include "opt_ppcparam.h"
 #include "opt_ppccache.h"
@@ -279,28 +279,29 @@
                oeacpufeat |= OEACPU_601;
 
        } else if (MPC745X_P(vers)) {
-               register_t hid0 = mfspr(SPR_HID0);
                register_t hid1 = mfspr(SPR_HID1);
 
                if (vers != MPC7450) {
+                       register_t hid0 = mfspr(SPR_HID0);
+
                        /* Enable more SPRG registers */
                        oeacpufeat |= OEACPU_HIGHSPRG;
 
                        /* Enable more BAT registers */
                        oeacpufeat |= OEACPU_HIGHBAT;
                        hid0 |= HID0_HIGH_BAT_EN;
-               }
 
-               /* Enable larger BAT registers */
-               oeacpufeat |= OEACPU_XBSEN;
-               hid0 |= HID0_XBSEN;
+                       /* Enable larger BAT registers */
+                       oeacpufeat |= OEACPU_XBSEN;
+                       hid0 |= HID0_XBSEN;
+
+                       mtspr(SPR_HID0, hid0);
+                       __asm volatile("sync;isync");
+               }
 
                /* Enable address broadcasting for MP systems */
                hid1 |= HID1_SYNCBE | HID1_ABE;
 
-               mtspr(SPR_HID0, hid0);
-               __asm volatile("sync;isync");
-
                mtspr(SPR_HID0, hid1);
                __asm volatile("sync;isync");