[src/trunk]: src/sys/arch/arm/include/arm32 Add XN bit L2 large pages.

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

details:   https://anonhg.NetBSD.org/src/rev/840811e8cf95
branches:  trunk
changeset: 327038:840811e8cf95
user:      matt <matt%NetBSD.org@localhost>
date:      Wed Feb 26 01:53:23 2014 +0000

description:
Add XN bit L2 large pages.

diffstat:

 sys/arch/arm/include/arm32/pte.h |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 7ae60713b891 -r 840811e8cf95 sys/arch/arm/include/arm32/pte.h
--- a/sys/arch/arm/include/arm32/pte.h  Wed Feb 26 01:51:51 2014 +0000
+++ b/sys/arch/arm/include/arm32/pte.h  Wed Feb 26 01:53:23 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pte.h,v 1.14 2014/02/22 20:46:35 matt Exp $    */
+/*     $NetBSD: pte.h,v 1.15 2014/02/26 01:53:23 matt Exp $    */
 
 /*
  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
@@ -227,6 +227,7 @@
 #define        L2_XS_nG        0x00000800      /* ARMv6 Not-Global */
 #define        L2_V6_L_TEX     L2_XS_L_TEX
 #define        L2_V6_XS_TEX    L2_XS_T_TEX
+#define        L2_XS_L_XN      0x00008000      /* ARMv6 eXecute Never */
 
 
 /*
@@ -239,7 +240,7 @@
  * Access Permissions for L1 and L2 of ARMv6 with XP=1 and ARMv7
  */
 #define        AP_R            0x01            /* readable */
-#define        AP_RO           0x20            /* read-only */
+#define        AP_RO           0x20            /* read-only (L2_XS_APX >> 4) */
 
 /*
  * Short-hand for common AP_* constants.