xref: /src/sys/arch/alpha/include/disklabel.h

/* $NetBSD: disklabel.h,v 1.4 1999/04/02 07:32:33 cgd 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_pad[60];		/* disklabel lives in here */
	u_int64_t bb_secsize;		/* secondary size (blocks) */
	u_int64_t bb_secstart;		/* secondary start (blocks) */
	u_int64_t bb_flags;		/* unknown; always zero */
	u_int64_t bb_cksum;		/* checksum of the the boot block,
					 * taken as u_int64_t's
					 */
};

#define	BOOT_BLOCK_BLOCKSIZE	512	/* block size for sec. size/start */

#endif /* _MACHINE_DISKLABEL_H_ */