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disklabel.h revision 1.3 
      1 /*	$NetBSD: disklabel.h,v 1.3 1995/08/05 20:24:42 leo Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Leo Weppelman.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Leo Weppelman.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #ifndef _MACHINE_DISKLABEL_H_
     34 #define _MACHINE_DISKLABEL_H_
     35 
     36 #define LABELSECTOR	0		/* start of boot block		*/
     37 #define LABELOFFSET	(7 * 1024)	/* offset of disklabel in bytes,
     38 					   relative to start of boot block */
     39 #define MAXPARTITIONS	16
     40 #define RAW_PART	 2		/* xx?c is raw partition	*/
     41 
     42 #define MK_PARTID(x,y,z)	(   ((u_int32_t)(x) << 16)	\
     43 				  | ((u_int32_t)(y) << 8)	\
     44 				  | ((u_int32_t)(z))		\
     45 				)
     46 /*
     47  * Various `well known' AHDI partition identifiers.
     48  */
     49 #define	CPU_PID_XGM	MK_PARTID('X','G','M')
     50 #define	CPU_PID_BGM	MK_PARTID('B','G','M')
     51 #define	CPU_PID_GEM	MK_PARTID('G','E','M')
     52 #define	CPU_PID_RAW	MK_PARTID('R','A','W')
     53 #define	CPU_PID_SWP	MK_PARTID('S','W','P')
     54 #define	CPU_PID_NBD	MK_PARTID('N','B','D')
     55 #define	CPU_PID_NBR	MK_PARTID('N','B','R')
     56 #define	CPU_PID_NBS	MK_PARTID('N','B','S')
     57 #define	CPU_PID_NBU	MK_PARTID('N','B','U')
     58 
     59 struct cpu_partition {			/* AHDI partition descriptor:	*/
     60 	u_int32_t	cp_id;		/* identifier (see above)	*/
     61 	u_int32_t	cp_st;		/* start and size in		*/
     62 	u_int32_t	cp_size;	/*  512 byte blocks		*/
     63 };
     64 
     65 struct cpu_disklabel {
     66    u_int32_t		cd_bslst;	/* start of AHDI bad sector list */
     67    u_int32_t		cd_bslsize;	/* size of AHDI bad sector list  */
     68    u_int32_t		cd_npartitions;	/* number of AHDI partitions     */
     69    struct cpu_partition	*cd_partitions;	/* list of AHDI partitions       */
     70    struct cpu_partition	*cd_labelpart;	/* AHDI partition with disklabel */
     71 };
     72 
     73 #endif /* _MACHINE_DISKLABEL_H_ */
     74