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
 55struct 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
 62struct riscix_partition_table {
 63	uint32_t	pad0;
 64	uint32_t	pad1;
 65	struct riscix_partition partitions[NRISCIX_PARTITIONS];
 66};
 67
 68struct 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__)
 96struct buf;
 97struct cpu_disklabel;
 98struct disklabel;
 99
100/* for readdisklabel.  rv != 0 -> matches, msg == NULL -> success */
101int 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 */
106int filecore_label_locate(dev_t, void (*)(struct buf *),
107	struct disklabel *, struct cpu_disklabel *, int *, int *);
108#endif
109#endif /* _SYS_DISKLABEL_ACORN_H_ */