1/* $OpenBSD: reboot.h,v 1.21 2025/09/16 12:18:10 hshoexer 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#ifndef _SYS_REBOOT_H_
36#define _SYS_REBOOT_H_
37
38/*
39 * Arguments to reboot system call. These are passed to the boot program,
40 * and then on to init.
41 */
42#define RB_AUTOBOOT 0 /* flags for system auto-booting itself */
43
44#define RB_ASKNAME 0x00001 /* ask for file name to reboot from */
45#define RB_SINGLE 0x00002 /* reboot to single user only */
46#define RB_NOSYNC 0x00004 /* dont sync before reboot */
47#define RB_HALT 0x00008 /* don't reboot, just halt */
48#define RB_INITNAME 0x00010 /* name given for /etc/init (unused) */
49#define RB_DFLTROOT 0x00020 /* use compiled-in rootdev */
50#define RB_KDB 0x00040 /* give control to kernel debugger */
51#define RB_RDONLY 0x00080 /* mount root fs read-only */
52#define RB_DUMP 0x00100 /* dump kernel memory before reboot */
53#define RB_MINIROOT 0x00200 /* mini-root present in memory at boot time */
54#define RB_CONFIG 0x00400 /* change configured devices */
55#define RB_TIMEBAD 0x00800 /* don't call resettodr() in boot() */
56#define RB_POWERDOWN 0x01000 /* attempt to power down machine */
57#define RB_SERCONS 0x02000 /* use serial console if available */
58#define RB_USERREQ 0x04000 /* boot() called at user request (e.g. ddb) */
59#define RB_RESET 0x08000 /* just reset, no cleanup */
60#define RB_GOODRANDOM 0x10000 /* excellent random seed loaded */
61#define RB_UNHIBERNATE 0x20000 /* unhibernate */
62#define RB_COCOVM 0x40000 /* booting confidential VM (e.g. SEV enabled) */
63
64/*
65 * Constants for converting boot-style device number to type,
66 * adaptor (uba, mba, etc), unit number and partition number.
67 * Type (== major device number) is in the low byte
68 * for backward compatibility. Except for that of the "magic
69 * number", each mask applies to the shifted value.
70 * Format:
71 * (4) (4) (4) (4) (8) (8)
72 * --------------------------------
73 * |MA | AD| CT| UN| PART | TYPE |
74 * --------------------------------
75 */
76#define B_ADAPTORSHIFT 24
77#define B_ADAPTORMASK 0x0f
78#define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
79#define B_CONTROLLERSHIFT 20
80#define B_CONTROLLERMASK 0xf
81#define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
82#define B_UNITSHIFT 16
83#define B_UNITMASK 0xf
84#define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
85#define B_PARTITIONSHIFT 8
86#define B_PARTITIONMASK 0xff
87#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
88#define B_TYPESHIFT 0
89#define B_TYPEMASK 0xff
90#define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
91
92#define B_MAGICMASK 0xf0000000
93#define B_DEVMAGIC 0xa0000000
94
95#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
96 (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
97 ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
98 ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
99
100#if defined(_KERNEL) && !defined(_STANDALONE) && !defined(_LOCORE)
101
102__BEGIN_DECLS
103__dead void reboot(int);
104__dead void boot(int);
105__END_DECLS
106
107#endif /* _KERNEL */
108
109#endif /* !_SYS_REBOOT_H_ */