sys/arch/sbmips/include/disklabel.h

   1 /* $NetBSD: disklabel.h,v 1.6 2005/12/11 12:18:51 christos Exp $ */
   2
   3 /*
   4  * Copyright 2000, 2001
   5  * Broadcom Corporation. All rights reserved.
   6  *
   7  * This software is furnished under license and may be used and copied only
   8  * in accordance with the following terms and conditions.  Subject to these
   9  * conditions, you may download, copy, install, use, modify and distribute
  10  * modified or unmodified copies of this software in source and/or binary
  11  * form. No title or ownership is transferred hereby.
  12  *
  13  * 1) Any source code used, modified or distributed must reproduce and
  14  *    retain this copyright notice and list of conditions as they appear in
  15  *    the source file.
  16  *
  17  * 2) No right is granted to use any trade name, trademark, or logo of
  18  *    Broadcom Corporation.  The "Broadcom Corporation" name may not be
  19  *    used to endorse or promote products derived from this software
  20  *    without the prior written permission of Broadcom Corporation.
  21  *
  22  * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
  23  *    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
  24  *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
  25  *    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
  26  *    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
  27  *    LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  *    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  *    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  30  *    BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  31  *    WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  32  *    OR OTHERWISE), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 /* from: $NetBSD: disklabel.h,v 1.4 2000/05/05 03:27:22 soren Exp */
  36
  37 /*
  38  * Copyright (c) 1994 Christopher G. Demetriou
  39  * All rights reserved.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the above copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *      This product includes software developed by Christopher G. Demetriou.
  52  * 4. The name of the author may not be used to endorse or promote products
  53  *    derived from this software without specific prior written permission
  54  *
  55  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  56  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  57  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  58  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  59  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  60  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  61  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  62  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  63  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  64  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  65  */
  66
  67 #ifndef _MACHINE_DISKLABEL_H_
  68 #define _MACHINE_DISKLABEL_H_
  69
  70 #define LABELSECTOR     1               /* sector containing label */
  71 #define LABELOFFSET     0               /* offset of label in sector */
  72 #define MAXPARTITIONS   16
  73 #define RAW_PART        3
  74
  75 #ifdef __NetBSD__
  76 /* Pull in MBR partition definitions. */
  77 #if HAVE_NBTOOL_CONFIG_H
  78 #include <nbinclude/sys/bootblock.h>
  79 #else
  80 #include <sys/bootblock.h>
  81 #endif /* HAVE_NBTOOL_CONFIG_H */
  82
  83 #ifndef __ASSEMBLER__
  84 #if HAVE_NBTOOL_CONFIG_H
  85 #include <nbinclude/sys/dkbad.h>
  86 #else
  87 #include <sys/dkbad.h>
  88 #endif /* HAVE_NBTOOL_CONFIG_H */
  89 struct cpu_disklabel {
  90         struct mbr_partition dosparts[MBR_PART_COUNT];
  91 #define __HAVE_DISKLABEL_DKBAD
  92         struct dkbad bad;
  93 };
  94 #endif
  95 #endif
  96
  97 /*
  98  * CFE boot block, modeled loosely on Alpha.
  99  *
 100  * It consists of:
 101  *
 102  *              BSD disk label
 103  *              <blank space>
 104  *              Boot block info (5 uint_64s)
 105  *
 106  * The boot block portion looks like:
 107  *
 108  *
 109  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 110  *      |                        BOOT_MAGIC_NUMBER                      |
 111  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 112  *      | Flags |   Reserved    | Vers  |      Header Checksum          |
 113  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 114  *      |             Secondary Loader Location (bytes)                 |
 115  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 116  *      |     Loader Checksum           |     Size of loader (bytes)    |
 117  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 118  *      |          Reserved             |    Architecture Information   |
 119  *      +-------+-------+-------+-------+-------+-------+-------+-------+
 120  *
 121  * Boot block fields should always be read as 64-bit numbers.
 122  *
 123  */
 124
 125
 126 struct boot_block {
 127         uint64_t cfe_bb_data[64];       /* data (disklabel, also as below) */
 128 };
 129 #define cfe_bb_magic    cfe_bb_data[59] /* magic number */
 130 #define cfe_bb_hdrinfo  cfe_bb_data[60] /* header checksum, ver, flags */
 131 #define cfe_bb_secstart cfe_bb_data[61] /* secondary start (bytes) */
 132 #define cfe_bb_secsize  cfe_bb_data[62] /* secondary size (bytes) */
 133 #define cfe_bb_archinfo cfe_bb_data[63] /* architecture info */
 134
 135 #define BOOT_BLOCK_OFFSET       0       /* offset of boot block. */
 136 #define BOOT_BLOCK_BLOCKSIZE    512     /* block size for sec. size/start,
 137                                          * and for boot block itself
 138                                          */
 139 #define BOOT_BLOCK_SIZE         40      /* 5 64-bit words */
 140
 141 #define BOOT_MAGIC_NUMBER       0x43465631424f4f54
 142 #define BOOT_HDR_CHECKSUM_MASK  0x00000000FFFFFFFF
 143 #define BOOT_HDR_VER_MASK       0x000000FF00000000
 144 #define BOOT_HDR_VER_SHIFT      32
 145 #define BOOT_HDR_FLAGS_MASK     0xFF00000000000000
 146 #define BOOT_SECSIZE_MASK       0x00000000FFFFFFFF
 147 #define BOOT_DATA_CHECKSUM_MASK 0xFFFFFFFF00000000
 148 #define BOOT_DATA_CHECKSUM_SHIFT 32
 149 #define BOOT_ARCHINFO_MASK      0x00000000FFFFFFFF
 150
 151 #define BOOT_HDR_VERSION        1
 152
 153 #define CHECKSUM_BOOT_BLOCK(bb,cksum)                                   \
 154         do {                                                            \
 155                 uint32_t *_ptr = (uint32_t *) (bb);                     \
 156                 uint32_t _cksum;                                        \
 157                 int _i;                                                 \
 158                                                                         \
 159                 _cksum = 0;                                             \
 160                 for (_i = 0;                                            \
 161                     _i < (BOOT_BLOCK_SIZE / sizeof (uint32_t));         \
 162                     _i++)                                               \
 163                         _cksum += _ptr[_i];                             \
 164                 *(cksum) = _cksum;                                      \
 165         } while (0)
 166
 167
 168 #define CHECKSUM_BOOT_DATA(data,len,cksum)                              \
 169         do {                                                            \
 170                 uint32_t *_ptr = (uint32_t *) (data);                   \
 171                 uint32_t _cksum;                                        \
 172                 int _i;                                                 \
 173                                                                         \
 174                 _cksum = 0;                                             \
 175                 for (_i = 0;                                            \
 176                     _i < ((len) / sizeof (uint32_t));                   \
 177                     _i++)                                               \
 178                         _cksum += _ptr[_i];                             \
 179                 *(cksum) = _cksum;                                      \
 180         } while (0)
 181
 182
 183 #endif /* _MACHINE_DISKLABEL_H_ */