[src/trunk]: src/sys/sys Add offset of old i386 mbr bootsel structure.

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

details:   https://anonhg.NetBSD.org/src/rev/26cff68ddec0
branches:  trunk
changeset: 566060:26cff68ddec0
user:      dsl <dsl%NetBSD.org@localhost>
date:      Mon Apr 26 21:00:38 2004 +0000

description:
Add offset of old i386 mbr bootsel structure.

diffstat:

 sys/sys/bootblock.h |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r f171df5952c7 -r 26cff68ddec0 sys/sys/bootblock.h
--- a/sys/sys/bootblock.h       Mon Apr 26 20:38:22 2004 +0000
+++ b/sys/sys/bootblock.h       Mon Apr 26 21:00:38 2004 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: bootblock.h,v 1.26 2004/04/23 16:26:18 matt Exp $      */
+/*     $NetBSD: bootblock.h,v 1.27 2004/04/26 21:00:38 dsl Exp $       */
 
 /*-
  * Copyright (c) 2002-2004 The NetBSD Foundation, Inc.
@@ -200,6 +200,7 @@
 #define        MBR_BPB_OFFSET          11      /* offsetof(mbr_sector, mbr_bpb) */
 #define        MBR_BOOTCODE_OFFSET     90      /* offsetof(mbr_sector, mbr_bootcode) */
 #define        MBR_BS_OFFSET           400     /* offsetof(mbr_sector, mbr_bootsel) */
+#define        MBR_BS_OLD_OFFSET       404     /* where mbr_bootsel used to be */
 #define        MBR_DSN_OFFSET          440     /* offsetof(mbr_sector, mbr_dsn) */
 #define        MBR_BS_MAGIC_OFFSET     444     /* offsetof(mbr_sector, mbr_bootsel_magic) */
 #define        MBR_PART_OFFSET         446     /* offsetof(mbr_sector, mbr_part[0]) */
@@ -244,8 +245,9 @@
                /* values for mbr_bootsel.mbrbs_flags */
 #define        MBR_BS_ACTIVE   0x01    /* Bootselector active (or code present) */
 #define        MBR_BS_EXTINT13 0x02    /* Set by fdisk if LBA needed (deprecated) */
-#define        MBR_BS_READ_LBA 0x04    /* Force LBA reads - even for low numbers */
+#define        MBR_BS_READ_LBA 0x04    /* Force LBA reads (deprecated) */
 #define        MBR_BS_EXTLBA   0x08    /* Extended ptn capable (LBA reads) */
+/* This is always set, the bootsel is located using the magic number...  */
 #define        MBR_BS_NEWMBR   0x80    /* New bootsel at offset 440 */
 
 #if !defined(__ASSEMBLER__)                                    /* { */