NetBSD/sys/arch/alpha/include/disklabel.h

84 lines
3.2 KiB
C

/* $NetBSD: disklabel.h,v 1.6 2000/03/13 23:52:26 soren Exp $ */
/*
* Copyright (c) 1994, 1999 Christopher G. Demetriou
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHINE_DISKLABEL_H_
#define _MACHINE_DISKLABEL_H_
#define LABELSECTOR 0 /* sector containing label */
#define LABELOFFSET 64 /* offset of label in sector */
#define MAXPARTITIONS 8 /* number of partitions */
#define RAW_PART 2 /* raw partition: xx?c */
#include <sys/dkbad.h>
/* Just a dummy */
struct cpu_disklabel {
struct dkbad bad; /* bad-sector information */
};
/*
* Alpha (disk, but also tape) Boot Block. See Section (III) 3.6.1 of the
* Alpha Architecture Reference Manual.
*/
struct boot_block {
u_int64_t bb_data[63]; /* data (disklabel, also as below) */
u_int64_t bb_cksum; /* checksum of the boot block,
* taken as u_int64_t's
*/
};
#define bb_secsize bb_data[60] /* secondary size (blocks) */
#define bb_secstart bb_data[61] /* secondary start (blocks) */
#define bb_flags bb_data[62] /* unknown flags (set to zero) */
#define BOOT_BLOCK_OFFSET 0 /* offset of boot block. */
#define BOOT_BLOCK_BLOCKSIZE 512 /* block size for sec. size/start,
* and for boot block itself
*/
#define CHECKSUM_BOOT_BLOCK(bb,cksum) \
do { \
const struct boot_block *_bb = (bb); \
u_int64_t _cksum; \
int _i; \
\
_cksum = 0; \
for (_i = 0; \
_i < (sizeof _bb->bb_data / sizeof _bb->bb_data[0]); \
_i++) \
_cksum += _bb->bb_data[_i]; \
*(cksum) = _cksum; \
} while (0)
#endif /* _MACHINE_DISKLABEL_H_ */