xref: /netbsd/sys/sys/reboot.h (revision 41065c56)
1 /*	$NetBSD: reboot.h,v 1.26 2020/01/01 22:57:17 thorpej Exp $	*/
2 
3 /*
4  * Copyright (c) 1982, 1986, 1988, 1993, 1994
5  *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  *
31  *	@(#)reboot.h	8.3 (Berkeley) 12/13/94
32  */
33 
34 #ifndef _SYS_REBOOT_H_
35 #define _SYS_REBOOT_H_
36 
37 /*
38  * Arguments to reboot system call.  These are passed to the boot program,
39  * and then on to init.
40  */
41 #define	RB_AUTOBOOT	0	/* flags for system auto-booting itself */
42 
43 #define	RB_ASKNAME	0x00000001	/* ask for file name to reboot from */
44 #define	RB_SINGLE	0x00000002	/* reboot to single user only */
45 #define	RB_NOSYNC	0x00000004	/* dont sync before reboot */
46 #define	RB_HALT		0x00000008	/* don't reboot, just halt */
47 #define	RB_INITNAME	0x00000010	/* name given for /etc/init (unused) */
48 #define	__RB_UNUSED1	0x00000020	/* was RB_DFLTROOT, obsolete */
49 #define	RB_KDB		0x00000040	/* give control to kernel debugger */
50 #define	RB_RDONLY	0x00000080	/* mount root fs read-only */
51 #define	RB_DUMP		0x00000100	/* dump kernel memory before reboot */
52 #define	RB_MINIROOT	0x00000200	/* mini-root present in memory */
53 #define	RB_STRING	0x00000400	/* use provided bootstr */
54 #define	RB_POWERDOWN	(RB_HALT|0x800) /* turn power off (or at least halt) */
55 #define RB_USERCONF	0x00001000	/* change configured devices */
56 
57 /*
58  * Extra autoboot flags (passed by boot prog to kernel). See also
59  * macros bootverbose, bootquiet in <sys/systm.h>.
60  */
61 #define	AB_NORMAL	0x00000000	/* boot normally (default) */
62 #define	AB_QUIET	0x00010000 	/* boot quietly */
63 #define	AB_VERBOSE	0x00020000	/* boot verbosely */
64 #define	AB_SILENT	0x00040000	/* boot silently */
65 #define	AB_DEBUG	0x00080000	/* boot with debug messages */
66 
67 /*
68  * The top 4 bits are architecture specific and are used to
69  * pass information between the bootblocks and the machine
70  * initialization code.
71  */
72 #define	RB_MD1		0x10000000
73 #define	RB_MD2		0x20000000
74 #define	RB_MD3		0x40000000
75 #define	RB_MD4		0x80000000
76 
77 /*
78  * Constants for converting boot-style device number to type,
79  * adaptor (uba, mba, etc), unit number and partition number.
80  * Type (== major device number) is in the low byte
81  * for backward compatibility.  Except for that of the "magic
82  * number", each mask applies to the shifted value.
83  * Format:
84  *	 (4) (4) (4) (4)  (8)     (8)
85  *	--------------------------------
86  *	|MA | AD| CT| UN| PART  | TYPE |
87  *	--------------------------------
88  */
89 #define	B_ADAPTORSHIFT		24
90 #define	B_ADAPTORMASK		0x0f
91 #define	B_ADAPTOR(val)		(((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
92 #define B_CONTROLLERSHIFT	20
93 #define B_CONTROLLERMASK	0xf
94 #define	B_CONTROLLER(val)	(((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
95 #define B_UNITSHIFT		16
96 #define B_UNITMASK		0xf
97 #define	B_UNIT(val)		(((val) >> B_UNITSHIFT) & B_UNITMASK)
98 #define B_PARTITIONSHIFT	8
99 #define B_PARTITIONMASK		0xff
100 #define	B_PARTITION(val)	(((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
101 #define	B_TYPESHIFT		0
102 #define	B_TYPEMASK		0xff
103 #define	B_TYPE(val)		(((val) >> B_TYPESHIFT) & B_TYPEMASK)
104 
105 #define	B_MAGICMASK	0xf0000000
106 #define	B_DEVMAGIC	0xa0000000
107 
108 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
109 	(((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
110 	((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
111 	((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
112 
113 #ifdef _KERNEL
114 
115 __BEGIN_DECLS
116 
117 void	kern_reboot(int, char *) __dead;
118 void	cpu_reboot(int, char *) __dead;
119 
120 __END_DECLS
121 
122 #endif /* _KERNEL */
123 
124 #endif /* !_SYS_REBOOT_H_ */
125