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      1 /*	$NetBSD: vtoc.h,v 1.3 2008/04/28 20:23:18 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2004 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _EWS4800MIPS_VTOC_H_
     33 #define	_EWS4800MIPS_VTOC_H_
     34 
     35 /* Volume Table Of Contents */
     36 
     37 #define	VTOC_MAXPARTITIONS	16
     38 #define	VTOC_SECTOR		1	/* sector */
     39 #define	VTOC_MINSIZE		16	/* sector */
     40 
     41 #define	VTOC_MAGIC		0x600ddeee
     42 #define	VTOC_VERSION		1
     43 
     44 #define	VTOC_TAG_NONAME		0x00
     45 #define	VTOC_TAG_BOOT		0x01
     46 #define	VTOC_TAG_ROOT		0x02
     47 #define	VTOC_TAG_SWAP		0x03
     48 #define	VTOC_TAG_USR		0x04
     49 #define	VTOC_TAG_RAWDISK	0x05
     50 #define	VTOC_TAG_STAND		0x06	/* bfs */
     51 #define	VTOC_TAG_VAR		0x07
     52 #define	VTOC_TAG_HOME		0x08
     53 #define	__VTOC_TAG_BSDFFS	0xff	/* ews4800mips port original define */
     54 
     55 #define	VTOC_FLAG_UNMOUNT	0x01
     56 #define	VTOC_FLAG_RDONLY	0x10
     57 
     58 struct ux_partition {
     59 	uint16_t tag;			/* 0 */
     60 	uint16_t flags;			/* 2 */
     61 	uint32_t start_sector;		/* 4 */
     62 	int32_t nsectors;		/* 8 */
     63 } __attribute__((__packed__));
     64 
     65 /* Sector image */
     66 struct vtoc_sector {
     67 	uint32_t bootinfo[3];		/*  0 */
     68 	uint32_t magic;			/* 12 */
     69 	uint32_t version;		/* 16 */
     70 	int8_t volume[8];		/* 20 */
     71 	uint16_t sector_size_byte;	/* 28 */
     72 	uint16_t npartitions;		/* 30 */
     73 	uint32_t reserved[10];		/* 32 */
     74 	struct ux_partition partition[VTOC_MAXPARTITIONS];	/* 72 */
     75 	uint32_t timestamp[VTOC_MAXPARTITIONS];	/* 264 */
     76 	int32_t padding[46];		/* 328 */
     77 } __attribute__((__packed__));		/* 512 byte */
     78 
     79 struct pdinfo_sector;
     80 
     81 #if defined(_KERNEL) || defined(_STANDALONE)
     82 bool vtoc_sector(void *, struct vtoc_sector *, int);
     83 bool vtoc_valid(const struct vtoc_sector *);
     84 bool vtoc_sanity(const struct vtoc_sector *);
     85 const struct ux_partition *vtoc_find_bfs(const struct vtoc_sector *);
     86 bool vtoc_write(struct vtoc_sector *, struct pdinfo_sector *);
     87 #endif
     88 
     89 #endif /* _EWS4800MIPS_VTOC_H_ */
     90