[src/trunk]: src/sys/arch/sh3/include Add some comments about P/USEG

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

details:   https://anonhg.NetBSD.org/src/rev/2cefac98847a
branches:  trunk
changeset: 503201:2cefac98847a
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Fri Feb 02 18:25:04 2001 +0000

description:
Add some comments about P/USEG

diffstat:

 sys/arch/sh3/include/cpu.h |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (28 lines):

diff -r 2ccd71539405 -r 2cefac98847a sys/arch/sh3/include/cpu.h
--- a/sys/arch/sh3/include/cpu.h        Fri Feb 02 18:23:01 2001 +0000
+++ b/sys/arch/sh3/include/cpu.h        Fri Feb 02 18:25:04 2001 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu.h,v 1.10 2000/08/25 01:04:10 thorpej Exp $ */
+/*     $NetBSD: cpu.h,v 1.11 2001/02/02 18:25:04 thorpej Exp $ */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -133,15 +133,15 @@
 /*
  * Logical address space of SH3 CPU.
  */
-#define SH3_P0SEG_BASE 0x00000000
+#define SH3_P0SEG_BASE 0x00000000      /* TLB mapped, also U0SEG */
 #define SH3_P0SEG_END  0x7fffffff
 #define SH3_P1SEG_BASE 0x80000000      /* pa == va */
 #define SH3_P1SEG_END  0x9fffffff
 #define SH3_P2SEG_BASE 0xa0000000      /* pa == va, non-cacheable */
 #define SH3_P2SEG_END  0xbfffffff
-#define SH3_P3SEG_BASE 0xc0000000
+#define SH3_P3SEG_BASE 0xc0000000      /* TLB mapped, supervisor mode */
 #define SH3_P3SEG_END  0xdfffffff
-#define SH3_P4SEG_BASE 0xe0000000
+#define SH3_P4SEG_BASE 0xe0000000      /* peripheral space */
 #define SH3_P4SEG_END  0xffffffff
 
 #define SH3_PHYS_MASK  0x1fffffff