131 lines
4.7 KiB
C
131 lines
4.7 KiB
C
/* $NetBSD: disklabel.h,v 1.3 2000/09/16 08:27:16 wdk Exp $ */
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/*
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* Copyright (c) 2000 Wayne Knowles. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _MACHINE_DISKLABEL_H_
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#define _MACHINE_DISKLABEL_H_
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/*
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* MIPS partition conventions:
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*
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* Partition 0 - root
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* Partition 1 - swap
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* Partition 6 - usr
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* Partition 7 - volume body
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* Partition 8 - volume header
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* Partition 10 - whole disk
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*/
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#define MAXPARTITIONS 8 /* XXX - NetBSD Compatability */
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#define RAW_PART 2
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#define LABELSECTOR 1
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#define LABELOFFSET 0
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#define MIPS_PARTITIONS 16 /* Number or partitions for Mips */
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#define MIPS_NVOLDIR 15 /* Number of volume directory files */
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#define MIPS_VDIRSZ 8 /* File name size in volume directory */
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#define MIPS_BFSIZE 16 /* Boot filename size */
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#define MIPS_VHSECTOR 0 /* Sector number for MIPS disklabel */
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/*
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* Devices parameters that RISC/os uses for mapping logical block numbers
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* to physical device addresses.
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*/
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struct mips_devparams {
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u_int8_t dp_skew; /* spiral addressing skew */
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u_int8_t dp_gap1; /* words of 0 before header */
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u_int8_t dp_gap2; /* words of 0 between hdr and data */
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u_int8_t dp_spare0; /* spare space */
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u_int16_t dp_cyls; /* number of cylinders */
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u_int16_t dp_shd0; /* starting head vol 0 */
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u_int16_t dp_trks0; /* number of tracks vol 0 */
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u_int16_t dp_shd1; /* starting head vol 1 */
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u_int16_t dp_trks1; /* number of tracks vol 1 */
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u_int16_t dp_secs; /* number of sectors/track */
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u_int16_t dp_secbytes; /* length of sector in bytes */
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u_int16_t dp_interleave; /* sector interleave */
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int32_t dp_flags; /* controller characteristics */
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int32_t dp_datarate; /* bytes/sec for kernel stats */
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int32_t dp_nretries; /* max num retries on data error */
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int32_t dp_spare1; /* spare entries */
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int32_t dp_spare2;
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int32_t dp_spare3;
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int32_t dp_spare4;
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} __attribute__((__packed__));
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/*
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* Volume directory is used as a shortcut to find bootstraps etc
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*/
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struct mips_voldir { /* Disk volume directory */
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char vd_name[MIPS_VDIRSZ];
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int32_t vd_lba;
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int32_t vd_len;
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};
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struct mips_partitions {
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int32_t pt_size; /* # of logical blocks in partition */
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int32_t pt_offset; /* first logical block of partiton */
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int32_t pt_fstype;
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};
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/*
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* Mips RISC/os compatible volume header and partition table
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*
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* 1 sector (512 bytes) in size, and normally copied to the first sector
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* and cylinder of every track on a disk.
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*/
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struct mips_volheader {
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u_int32_t vh_magic;
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#define MIPS_VHMAGIC 0xbe5a941
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int16_t vh_root; /* Root partition number */
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int16_t vh_swap; /* Swap partition number */
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char bootfile[MIPS_BFSIZE]; /* default file to boot */
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struct mips_devparams vh_dp; /* disk device parameters */
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struct mips_voldir vh_voldir[MIPS_NVOLDIR];
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struct mips_partitions vh_part[MIPS_PARTITIONS];
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int32_t vh_cksum;
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int32_t vh_pad;
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} __attribute__((__packed__));
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#define MIPS_FS_VOLHDR 0
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#define MIPS_FS_TRKREPL 1
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#define MIPS_FS_SECREPL 2
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#define MIPS_FS_RAW 3
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#define MIPS_FS_BSD 4
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#define MIPS_FS_BSD42 4
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#define MIPS_FS_SYSV 5
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#define MIPS_FS_VOLUME 6 /* Entire volume */
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struct cpu_disklabel {
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struct mips_volheader cd_volhdr;
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};
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#endif /* _MACHINE_DISKLABEL_H_ */
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