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      1 /*	$NetBSD: disklabel_acorn.h,v 1.7 2022/05/24 19:37:39 andvar Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Mark Brinicombe.
      5  * Copyright (c) 1994 Brini.
      6  * All rights reserved.
      7  *
      8  * This code is derived from software written for Brini by Mark Brinicombe
      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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by Brini.
     21  * 4. The name of the company nor the name of the author may be used to
     22  *    endorse or promote products derived from this software without specific
     23  *    prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     26  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     27  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     28  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     29  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     30  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _SYS_DISKLABEL_ACORN_H_
     39 #define _SYS_DISKLABEL_ACORN_H_
     40 
     41 #define PARTITION_TYPE_UNUSED  0
     42 #define PARTITION_TYPE_ADFS    1
     43 #define PARTITION_TYPE_RISCIX  2
     44 
     45 #define PARTITION_FORMAT_RISCIX  2
     46 #define PARTITION_FORMAT_RISCBSD 0x42
     47 
     48 #define FILECORE_BOOT_SECTOR 6
     49 
     50 /* Stuff to deal with RISCiX partitions */
     51 
     52 #define NRISCIX_PARTITIONS 8
     53 #define RISCIX_PARTITION_OFFSET 8
     54 
     55 struct riscix_partition {
     56 	uint32_t	rp_start;
     57 	uint32_t	rp_length;
     58 	uint32_t	rp_type;
     59 	int8_t		rp_name[16];
     60 };
     61 
     62 struct riscix_partition_table {
     63 	uint32_t	pad0;
     64 	uint32_t	pad1;
     65 	struct riscix_partition partitions[NRISCIX_PARTITIONS];
     66 };
     67 
     68 struct filecore_bootblock {
     69 	uint8_t		padding0[0x1c0];
     70 	uint8_t		log2secsize;
     71 	uint8_t		secspertrack;
     72 	uint8_t		heads;
     73 	uint8_t		density;
     74 	uint8_t		idlen;
     75 	uint8_t		log2bpmb;
     76 	uint8_t		skew;
     77 	uint8_t		bootoption;
     78 	uint8_t		lowsector;
     79 	uint8_t		nzones;
     80 	uint16_t	zone_spare;
     81 	uint32_t	root;
     82 	uint32_t	disc_size;
     83 	uint16_t	disc_id;
     84 	uint8_t		disc_name[10];
     85 	uint32_t	disc_type;
     86 
     87 	uint8_t		padding1[24];
     88 
     89 	uint8_t		partition_type;
     90 	uint8_t		partition_cyl_low;
     91 	uint8_t		partition_cyl_high;
     92 	uint8_t		checksum;
     93 };
     94 
     95 #if defined(_KERNEL) && !defined(__ASSEMBLER__)
     96 struct buf;
     97 struct cpu_disklabel;
     98 struct disklabel;
     99 
    100 /* for readdisklabel.  rv != 0 -> matches, msg == NULL -> success */
    101 int filecore_label_read(dev_t, void (*)(struct buf *),
    102 	struct disklabel *, struct cpu_disklabel *, const char **, int *,
    103 	int *);
    104 
    105 /* for writedisklabel.  rv == 0 -> doesn't match, rv > 0 -> success */
    106 int filecore_label_locate(dev_t, void (*)(struct buf *),
    107 	struct disklabel *, struct cpu_disklabel *, int *, int *);
    108 #endif
    109 #endif /* _SYS_DISKLABEL_ACORN_H_ */
    110