sys/arch/ews4800mips/include/vtoc.h

   1 /*      $NetBSD: vtoc.h,v 1.2 2007/02/21 22:59:41 thorpej 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_ */