2 * Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer as
10 * the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by Rodney W. Grimes.
17 * 4. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #ifndef _MACHINE_BOOTINFO_H_
36 #define _MACHINE_BOOTINFO_H_
38 /* Only change the version number if you break compatibility. */
39 #define BOOTINFO_VERSION 1
44 * A zero bootinfo field often means that there is no info available.
45 * Flags are used to indicate the validity of fields where zero is a
50 u_int32_t bi_kernelname; /* represents a char * */
51 u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */
52 /* End of fields that are always present. */
53 #define bi_endcommon bi_n_bios_used
54 u_int32_t bi_n_bios_used;
55 u_int32_t bi_bios_geom[N_BIOS_GEOM];
57 u_int8_t bi_memsizes_valid;
58 u_int8_t bi_bios_dev; /* bootdev BIOS unit number */
62 u_int32_t bi_symtab; /* struct symtab * */
63 u_int32_t bi_esymtab; /* struct symtab * */
64 /* Items below only from advanced bootloader */
65 u_int32_t bi_kernend; /* end of kernel space */
66 u_int32_t bi_envp; /* environment */
67 u_int32_t bi_modulep; /* preloaded modules */
71 extern struct bootinfo bootinfo;
75 * Constants for converting boot-style device number to type,
76 * adaptor (uba, mba, etc), unit number and partition number.
77 * Type (== major device number) is in the low byte
78 * for backward compatibility. Except for that of the "magic
79 * number", each mask applies to the shifted value.
82 * --------------------------------
83 * |MA | SLICE | UN| PART | TYPE |
84 * --------------------------------
86 #define B_SLICESHIFT 20
87 #define B_SLICEMASK 0xff
88 #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
89 #define B_UNITSHIFT 16
90 #define B_UNITMASK 0xf
91 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
92 #define B_PARTITIONSHIFT 8
93 #define B_PARTITIONMASK 0xff
94 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
96 #define B_TYPEMASK 0xff
97 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
99 #define B_MAGICMASK 0xf0000000
100 #define B_DEVMAGIC 0xa0000000
102 #define MAKEBOOTDEV(type, slice, unit, partition) \
103 (((type) << B_TYPESHIFT) | ((slice) << B_SLICESHIFT) | \
104 ((unit) << B_UNITSHIFT) | ((partition) << B_PARTITIONSHIFT) | \
108 #define COMPATIBILITY_SLICE 0
109 #define MAX_SLICES 32
110 #define WHOLE_DISK_SLICE 1
112 #endif /* !_MACHINE_BOOTINFO_H_ */