xref: /netbsd/sys/arch/mac68k/include/disklabel.h (revision bf9ec67e)
1 /*	$NetBSD: disklabel.h,v 1.6 1999/01/27 21:03:46 thorpej Exp $	*/
2 
3 /*
4  * Copyright (c) 1994 Christopher G. Demetriou
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *      This product includes software developed by Christopher G. Demetriou.
18  * 4. The name of the author may not be used to endorse or promote products
19  *    derived from this software without specific prior written permission
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 /*-
33  * Copyright (C) 1993	Allen K. Briggs, Chris P. Caputo,
34  *			Michael L. Finch, Bradley A. Grantham, and
35  *			Lawrence A. Kesteloot
36  * All rights reserved.
37  *
38  * Redistribution and use in source and binary forms, with or without
39  * modification, are permitted provided that the following conditions
40  * are met:
41  * 1. Redistributions of source code must retain the above copyright
42  *    notice, this list of conditions and the following disclaimer.
43  * 2. Redistributions in binary form must reproduce the above copyright
44  *    notice, this list of conditions and the following disclaimer in the
45  *    documentation and/or other materials provided with the distribution.
46  * 3. All advertising materials mentioning features or use of this software
47  *    must display the following acknowledgement:
48  *	This product includes software developed by the Alice Group.
49  * 4. The names of the Alice Group or any of its members may not be used
50  *    to endorse or promote products derived from this software without
51  *    specific prior written permission.
52  *
53  * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
54  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
56  * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
57  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
58  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63  *
64  */
65 
66 #ifndef _MACHINE_DISKLABEL_H_
67 #define _MACHINE_DISKLABEL_H_
68 
69 #define	LABELSECTOR	0			/* sector containing label */
70 #define	LABELOFFSET	64			/* offset of label in sector */
71 #define	MAXPARTITIONS	8			/* number of partitions */
72 #define	RAW_PART	2			/* raw partition: xx?c */
73 
74 /* Just a dummy */
75 struct cpu_disklabel {
76 	int	cd_dummy;			/* must have one element. */
77 };
78 
79 /*
80  * Driver Descriptor Map, from Inside Macintosh: Devices, SCSI Manager
81  * pp 12-13.  The driver descriptor map always resides on physical block 0.
82  */
83 struct drvr_descriptor {
84 	u_int32_t	descBlock;	/* first block of driver */
85 	u_int16_t	descSize;	/* driver size in blocks */
86 	u_int16_t	descType;	/* system type */
87 };
88 
89 /* system types; Apple reserves 0-15 */
90 #define	DRVR_TYPE_MACINTOSH	1
91 
92 struct drvr_map {
93 #define DRIVER_MAP_MAGIC	0x4552
94 	u_int16_t	sbSig;		/* map signature */
95 	u_int16_t	sbBlockSize;	/* block size of device */
96 	u_int32_t	sbBlkCount;	/* number of blocks on device */
97 	u_int16_t	sbDevType;	/* (used internally by ROM) */
98 	u_int16_t	sbDevID;	/* (used internally by ROM) */
99 	u_int32_t	sbData;		/* (used internally by ROM) */
100 	u_int16_t	sbDrvrCount;	/* number of driver descriptors */
101 #define	DRVR_MAX_DESCRIPTORS	61
102 	struct drvr_descriptor sb_dd[DRVR_MAX_DESCRIPTORS];
103 	u_int16_t	pad[3];
104 } __attribute__ ((packed));
105 
106 #define	ddBlock(N)	sb_dd[(N)].descBlock
107 #define	ddSize(N)	sb_dd[(N)].descSize
108 #define	ddType(N)	sb_dd[(N)].descType
109 
110 /*
111  * Partition map structure from Inside Macintosh: Devices, SCSI Manager
112  * pp. 13-14.  The partition map always begins on physical block 1.
113  *
114  * With the exception of block 0, all blocks on the disk must belong to
115  * exactly one partition.  The partition map itself belongs to a partition
116  * of type `APPLE_PARTITION_MAP', and is not limited in size by anything
117  * other than available disk space.  The partition map is not necessarily
118  * the first partition listed.
119  */
120 struct part_map_entry {
121 #define PART_ENTRY_MAGIC	0x504d
122 	u_int16_t	pmSig;		/* partition signature */
123 	u_int16_t	pmSigPad;	/* (reserved) */
124 	u_int32_t	pmMapBlkCnt;	/* number of blocks in partition map */
125 	u_int32_t	pmPyPartStart;	/* first physical block of partition */
126 	u_int32_t	pmPartBlkCnt;	/* number of blocks in partition */
127 	char		pmPartName[32];	/* partition name */
128 	char		pmPartType[32];	/* partition type */
129 	u_int32_t	pmLgDataStart;	/* first logical block of data area */
130 	u_int32_t	pmDataCnt;	/* number of blocks in data area */
131 	u_int32_t	pmPartStatus;	/* partition status information */
132 	u_int32_t	pmLgBootStart;	/* first logical block of boot code */
133 	u_int32_t	pmBootSize;	/* size of boot code, in bytes */
134 	u_int32_t	pmBootLoad;	/* boot code load address */
135 	u_int32_t	pmBootLoad2;	/* (reserved) */
136 	u_int32_t	pmBootEntry;	/* boot code entry point */
137 	u_int32_t	pmBootEntry2;	/* (reserved) */
138 	u_int32_t	pmBootCksum;	/* boot code checksum */
139 	char		pmProcessor[16]; /* processor type (e.g. "68020") */
140 	u_int8_t	pmBootArgs[128]; /* A/UX boot arguments */
141 	u_int8_t	pad[248];	/* pad to end of block */
142 };
143 
144 #define PART_TYPE_DRIVER	"APPLE_DRIVER"
145 #define PART_TYPE_DRIVER43	"APPLE_DRIVER43"
146 #define PART_TYPE_DRIVERATA	"APPLE_DRIVER_ATA"
147 #define PART_TYPE_FWB_COMPONENT	"FWB DRIVER COMPONENTS"
148 #define PART_TYPE_MAC		"APPLE_HFS"
149 #define PART_TYPE_NETBSD	"NETBSD"
150 #define PART_TYPE_PARTMAP	"APPLE_PARTITION_MAP"
151 #define PART_TYPE_SCRATCH	"APPLE_SCRATCH"
152 #define PART_TYPE_UNIX		"APPLE_UNIX_SVR2"
153 
154 /*
155  * "pmBootArgs" for APPLE_UNIX_SVR2 partition.
156  * NetBSD/mac68k only uses Magic, Cluster, Type, and Flags.
157  */
158 struct blockzeroblock {
159 	u_int32_t       bzbMagic;
160 	u_int8_t        bzbCluster;
161 	u_int8_t        bzbType;
162 	u_int16_t       bzbBadBlockInode;
163 	u_int16_t       bzbFlags;
164 	u_int16_t       bzbReserved;
165 	u_int32_t       bzbCreationTime;
166 	u_int32_t       bzbMountTime;
167 	u_int32_t       bzbUMountTime;
168 };
169 
170 #define BZB_MAGIC	0xABADBABE
171 #define BZB_TYPEFS	1
172 #define BZB_TYPESWAP	3
173 #define BZB_ROOTFS	0x8000
174 #define BZB_USRFS	0x4000
175 
176 #endif /* _MACHINE_DISKLABEL_H_ */
177