1 /* $OpenBSD: reboot.h,v 1.13 2004/03/10 23:02:53 tom Exp $ */
2 /* $NetBSD: reboot.h,v 1.9 1996/04/22 01:23:25 christos Exp $ */
3
4 /*
5 * Copyright (c) 1982, 1986, 1988, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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
30 * SUCH DAMAGE.
31 *
32 * @(#)reboot.h 8.2 (Berkeley) 7/10/94
33 */
34
35 /*
36 * Arguments to reboot system call. These are passed to the boot program,
37 * and then on to init.
38 */
39 #define RB_AUTOBOOT 0 /* flags for system auto-booting itself */
40
41 #define RB_ASKNAME 0x0001 /* ask for file name to reboot from */
42 #define RB_SINGLE 0x0002 /* reboot to single user only */
43 #define RB_NOSYNC 0x0004 /* dont sync before reboot */
44 #define RB_HALT 0x0008 /* don't reboot, just halt */
45 #define RB_INITNAME 0x0010 /* name given for /etc/init (unused) */
46 #define RB_DFLTROOT 0x0020 /* use compiled-in rootdev */
47 #define RB_KDB 0x0040 /* give control to kernel debugger */
48 #define RB_RDONLY 0x0080 /* mount root fs read-only */
49 #define RB_DUMP 0x0100 /* dump kernel memory before reboot */
50 #define RB_MINIROOT 0x0200 /* mini-root present in memory at boot time */
51 #define RB_CONFIG 0x0400 /* change configured devices */
52 #define RB_TIMEBAD 0x0800 /* don't call resettodr() in boot() */
53 #define RB_POWERDOWN 0x1000 /* attempt to power down machine */
54 #define RB_SERCONS 0x2000 /* use serial console if available */
55 #define RB_USERREQ 0x4000 /* boot() called at user request (e.g. ddb) */
56
57 /*
58 * Constants for converting boot-style device number to type,
59 * adaptor (uba, mba, etc), unit number and partition number.
60 * Type (== major device number) is in the low byte
61 * for backward compatibility. Except for that of the "magic
62 * number", each mask applies to the shifted value.
63 * Format:
64 * (4) (4) (4) (4) (8) (8)
65 * --------------------------------
66 * |MA | AD| CT| UN| PART | TYPE |
67 * --------------------------------
68 */
69 #define B_ADAPTORSHIFT 24
70 #define B_ADAPTORMASK 0x0f
71 #define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
72 #define B_CONTROLLERSHIFT 20
73 #define B_CONTROLLERMASK 0xf
74 #define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
75 #define B_UNITSHIFT 16
76 #define B_UNITMASK 0xf
77 #define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
78 #define B_PARTITIONSHIFT 8
79 #define B_PARTITIONMASK 0xff
80 #define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
81 #define B_TYPESHIFT 0
82 #define B_TYPEMASK 0xff
83 #define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
84
85 #define B_MAGICMASK 0xf0000000
86 #define B_DEVMAGIC 0xa0000000
87
88 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
89 (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
90 ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
91 ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
92
93 #if defined(_KERNEL) && !defined(_STANDALONE) && !defined(_LOCORE)
94
95 __BEGIN_DECLS
96
97 void boot(int)
98 __attribute__((__noreturn__));
99
100 __END_DECLS
101
102 #endif /* _KERNEL */