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
32 * $FreeBSD: src/sys/i386/include/bootinfo.h,v 1.14 1999/12/29 04:32:57 peter Exp $
33 * $DragonFly: src/sys/platform/pc64/include/bootinfo.h,v 1.1 2007/09/23 04:42:07 yanyh Exp $
36 #ifndef _MACHINE_BOOTINFO_H_
37 #define _MACHINE_BOOTINFO_H_
39 /* Only change the version number if you break compatibility. */
40 #define BOOTINFO_VERSION 1
45 * A zero bootinfo field often means that there is no info available.
46 * Flags are used to indicate the validity of fields where zero is a
51 u_int32_t bi_kernelname; /* represents a char * */
52 u_int32_t bi_nfs_diskless; /* struct nfs_diskless * */
53 /* End of fields that are always present. */
54 #define bi_endcommon bi_n_bios_used
55 u_int32_t bi_n_bios_used;
56 u_int32_t bi_bios_geom[N_BIOS_GEOM];
58 u_int8_t bi_memsizes_valid;
59 u_int8_t bi_bios_dev; /* bootdev BIOS unit number */
63 u_int32_t bi_symtab; /* struct symtab * */
64 u_int32_t bi_esymtab; /* struct symtab * */
65 /* Items below only from advanced bootloader */
66 u_int32_t bi_kernend; /* end of kernel space */
67 u_int32_t bi_envp; /* environment */
68 u_int32_t bi_modulep; /* preloaded modules */
72 extern struct bootinfo bootinfo;
76 * Constants for converting boot-style device number to type,
77 * adaptor (uba, mba, etc), unit number and partition number.
78 * Type (== major device number) is in the low byte
79 * for backward compatibility. Except for that of the "magic
80 * number", each mask applies to the shifted value.
82 * (4) (4) (4) (4) (8) (8)
83 * --------------------------------
84 * |MA | AD| CT| UN| PART | TYPE |
85 * --------------------------------
87 #define B_ADAPTORSHIFT 24
88 #define B_ADAPTORMASK 0x0f
89 #define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
90 #define B_CONTROLLERSHIFT 20
91 #define B_CONTROLLERMASK 0xf
92 #define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
93 #define B_SLICESHIFT 20
94 #define B_SLICEMASK 0xff
95 #define B_SLICE(val) (((val)>>B_SLICESHIFT) & B_SLICEMASK)
96 #define B_UNITSHIFT 16
97 #define B_UNITMASK 0xf
98 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
99 #define B_PARTITIONSHIFT 8
100 #define B_PARTITIONMASK 0xff
101 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
102 #define B_TYPESHIFT 0
103 #define B_TYPEMASK 0xff
104 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
106 #define B_MAGICMASK 0xf0000000
107 #define B_DEVMAGIC 0xa0000000
109 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
110 (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
111 ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
112 ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
115 #define COMPATIBILITY_SLICE 0
116 #define MAX_SLICES 16
117 #define WHOLE_DISK_SLICE 1
119 #endif /* !_MACHINE_BOOTINFO_H_ */