/* $NetBSD: disklabel.h,v 1.10 2013/05/16 19:06:45 christos Exp $ */

/*
* Copyright 2000, 2001
* Broadcom Corporation. All rights reserved.
*
* This software is furnished under license and may be used and copied only
* in accordance with the following terms and conditions.  Subject to these
* conditions, you may download, copy, install, use, modify and distribute
* modified or unmodified copies of this software in source and/or binary
* form. No title or ownership is transferred hereby.
*
* 1) Any source code used, modified or distributed must reproduce and
*    retain this copyright notice and list of conditions as they appear in
*    the source file.
*
* 2) No right is granted to use any trade name, trademark, or logo of
*    Broadcom Corporation.  The "Broadcom Corporation" name may not be
*    used to endorse or promote products derived from this software
*    without the prior written permission of Broadcom Corporation.
*
* 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED
*    WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
*    NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE
*    FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE
*    LIABLE FOR 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), EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/* from: $NetBSD: disklabel.h,v 1.4 2000/05/05 03:27:22 soren Exp */

/*
* Copyright (c) 1994 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.
* 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 LABELUSESMBR    0               /* no MBR partitionning */
#define LABELSECTOR     1               /* sector containing label */
#define LABELOFFSET     0               /* offset of label in sector */
#define MAXPARTITIONS   16
#define RAW_PART        3

#ifdef __NetBSD__
/* Pull in MBR partition definitions. */
#if HAVE_NBTOOL_CONFIG_H
#include <nbinclude/sys/bootblock.h>
#else
#include <sys/bootblock.h>
#endif /* HAVE_NBTOOL_CONFIG_H */

#ifndef __ASSEMBLER__
#if HAVE_NBTOOL_CONFIG_H
#include <nbinclude/sys/dkbad.h>
#else
#include <sys/dkbad.h>
#endif /* HAVE_NBTOOL_CONFIG_H */
struct cpu_disklabel {
       struct mbr_partition mbrparts[MBR_PART_COUNT];
#define __HAVE_DISKLABEL_DKBAD
       struct dkbad bad;
};
#endif
#endif

/*
* CFE boot block, modeled loosely on Alpha.
*
* It consists of:
*
*              BSD disk label
*              <blank space>
*              Boot block info (5 uint_64s)
*
* The boot block portion looks like:
*
*
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*      |                        BOOT_MAGIC_NUMBER                      |
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*      | Flags |   Reserved    | Vers  |      Header Checksum          |
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*      |             Secondary Loader Location (bytes)                 |
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*      |     Loader Checksum           |     Size of loader (bytes)    |
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*      |          Reserved             |    Architecture Information   |
*      +-------+-------+-------+-------+-------+-------+-------+-------+
*
* Boot block fields should always be read as 64-bit numbers.
*
*/


struct boot_block {
       uint64_t cfe_bb_data[64];       /* data (disklabel, also as below) */
};
#define cfe_bb_magic    cfe_bb_data[59] /* magic number */
#define cfe_bb_hdrinfo  cfe_bb_data[60] /* header checksum, ver, flags */
#define cfe_bb_secstart cfe_bb_data[61] /* secondary start (bytes) */
#define cfe_bb_secsize  cfe_bb_data[62] /* secondary size (bytes) */
#define cfe_bb_archinfo cfe_bb_data[63] /* architecture info */

#define BOOT_BLOCK_OFFSET       0       /* offset of boot block. */
#define BOOT_BLOCK_BLOCKSIZE    512     /* block size for sec. size/start,
                                        * and for boot block itself
                                        */
#define BOOT_BLOCK_SIZE         40      /* 5 64-bit words */

#define BOOT_MAGIC_NUMBER       0x43465631424f4f54
#define BOOT_HDR_CHECKSUM_MASK  0x00000000FFFFFFFF
#define BOOT_HDR_VER_MASK       0x000000FF00000000
#define BOOT_HDR_VER_SHIFT      32
#define BOOT_HDR_FLAGS_MASK     0xFF00000000000000
#define BOOT_SECSIZE_MASK       0x00000000FFFFFFFF
#define BOOT_DATA_CHECKSUM_MASK 0xFFFFFFFF00000000
#define BOOT_DATA_CHECKSUM_SHIFT 32
#define BOOT_ARCHINFO_MASK      0x00000000FFFFFFFF

#define BOOT_HDR_VERSION        1

#define CHECKSUM_BOOT_BLOCK(bb,cksum)                                   \
       do {                                                            \
               uint32_t *_ptr = (uint32_t *) (bb);                     \
               uint32_t _cksum;                                        \
               int _i;                                                 \
                                                                       \
               _cksum = 0;                                             \
               for (_i = 0;                                            \
                   _i < (BOOT_BLOCK_SIZE / sizeof (uint32_t));         \
                   _i++)                                               \
                       _cksum += _ptr[_i];                             \
               *(cksum) = _cksum;                                      \
       } while (0)


#define CHECKSUM_BOOT_DATA(data,len,cksum)                              \
       do {                                                            \
               uint32_t *_ptr = (uint32_t *) (data);                   \
               uint32_t _cksum;                                        \
               int _i;                                                 \
                                                                       \
               _cksum = 0;                                             \
               for (_i = 0;                                            \
                   _i < ((len) / sizeof (uint32_t));                   \
                   _i++)                                               \
                       _cksum += _ptr[_i];                             \
               *(cksum) = _cksum;                                      \
       } while (0)


#endif /* _MACHINE_DISKLABEL_H_ */

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