sysdeps/mach/sys/reboot.h

   1 /*
   2  * Mach Operating System
   3  * Copyright (C) 1993,1991,1990 Carnegie Mellon University
   4  * All Rights Reserved.
   5  *
   6  * Permission to use, copy, modify and distribute this software and its
   7  * documentation is hereby granted, provided that both the copyright
   8  * notice and this permission notice appear in all copies of the
   9  * software, derivative works or modified versions, and any portions
  10  * thereof, and that both notices appear in supporting documentation.
  11  *
  12  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  13  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  14  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  15  *
  16  * Carnegie Mellon requests users of this software to return to
  17  *
  18  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  19  *  School of Computer Science
  20  *  Carnegie Mellon University
  21  *  Pittsburgh PA 15213-3890
  22  *
  23  * any improvements or extensions that they make and grant Carnegie Mellon
  24  * the rights to redistribute these changes.
  25  */
  26 /*
  27  * (pre-GNU) HISTORY
  28  *
  29  * Revision 2.8  93/03/11  13:46:40  danner
  30  *      unsigned long -> unsigned int.
  31  *      [93/03/09            danner]
  32  *
  33  * Revision 2.7  92/05/21  17:25:11  jfriedl
  34  *      Appended 'U' to constants that would otherwise be signed.
  35  *      [92/05/16            jfriedl]
  36  *
  37  * Revision 2.6  91/06/19  11:59:44  rvb
  38  *      Second byte of boothowto is flags for "startup" program.
  39  *      [91/06/18            rvb]
  40  *      Add ifndef __ASSEMBLER__ so that vax_init.s can include it.
  41  *      [91/06/11            rvb]
  42  *
  43  * Revision 2.5  91/05/14  17:40:11  mrt
  44  *      Correcting copyright
  45  *
  46  * Revision 2.4  91/02/05  17:56:48  mrt
  47  *      Changed to new Mach copyright
  48  *      [91/02/01  17:49:12  mrt]
  49  *
  50  * Revision 2.3  90/08/27  22:12:56  dbg
  51  *      Added definitions used by Mach Kernel: RB_DEBUGGER, RB_UNIPROC,
  52  *      RB_NOBOOTRC, RB_ALTBOOT.  Moved RB_KDB to 0x04 (Mach value).
  53  *      Removed RB_RDONLY, RB_DUMP, RB_NOSYNC.
  54  *      [90/08/14            dbg]
  55  *
  56  */
  57
  58 /*
  59    Copyright (C) 1982, 1986, 1988 Regents of the University of California.
  60    All rights reserved.
  61
  62    Redistribution and use in source and binary forms, with or without
  63    modification, are permitted provided that the following conditions
  64    are met:
  65
  66    1. Redistributions of source code must retain the above copyright
  67       notice, this list of conditions and the following disclaimer.
  68    2. Redistributions in binary form must reproduce the above copyright
  69       notice, this list of conditions and the following disclaimer in the
  70       documentation and/or other materials provided with the distribution.
  71    4. Neither the name of the University nor the names of its contributors
  72       may be used to endorse or promote products derived from this software
  73       without specific prior written permission.
  74
  75    THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  76    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  77    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  78    ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  79    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  80    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  81    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  82    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  83    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  84    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  85    SUCH DAMAGE.*/
  86
  87 /*
  88  *      @(#)reboot.h    7.5 (Berkeley) 6/27/88
  89  */
  90
  91 #ifndef _SYS_REBOOT_H_
  92 #define _SYS_REBOOT_H_
  93
  94 #include <features.h>
  95
  96 /*
  97  * Arguments to reboot system call.
  98  * These are converted to switches, and passed to startup program,
  99  * and on to init.
 100  */
 101 #define RB_AUTOBOOT     0       /* flags for system auto-booting itself */
 102
 103 #define RB_ASKNAME      0x01    /* -a: ask for file name to reboot from */
 104 #define RB_SINGLE       0x02    /* -s: reboot to single user only */
 105 #define RB_KDB          0x04    /* -d: kernel debugger symbols loaded */
 106 #define RB_HALT         0x08    /* -h: enter KDB at bootup */
 107                                 /*     for host_reboot(): don't reboot,
 108                                        just halt */
 109 #define RB_INITNAME     0x10    /* -i: name given for /etc/init (unused) */
 110 #define RB_DFLTROOT     0x20    /*     use compiled-in rootdev */
 111 #define RB_NOBOOTRC     0x20    /* -b: don't run /etc/rc.boot */
 112 #define RB_ALTBOOT      0x40    /*     use /boot.old vs /boot */
 113 #define RB_UNIPROC      0x80    /* -u: start only one processor */
 114
 115 #define RB_SHIFT        8       /* second byte is for ux */
 116
 117 #define RB_DEBUGGER     0x1000  /*     for host_reboot(): enter kernel
 118                                        debugger from user level */
 119
 120 /*
 121  * Constants for converting boot-style device number to type,
 122  * adaptor (uba, mba, etc), unit number and partition number.
 123  * Type (== major device number) is in the low byte
 124  * for backward compatibility.  Except for that of the "magic
 125  * number", each mask applies to the shifted value.
 126  * Format:
 127  *       (4) (4) (4) (4)  (8)     (8)
 128  *      --------------------------------
 129  *      |MA | AD| CT| UN| PART  | TYPE |
 130  *      --------------------------------
 131  */
 132 #define B_ADAPTORSHIFT          24
 133 #define B_ADAPTORMASK           0x0f
 134 #define B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
 135 #define B_CONTROLLERSHIFT       20
 136 #define B_CONTROLLERMASK        0xf
 137 #define B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
 138 #define B_UNITSHIFT             16
 139 #define B_UNITMASK              0xf
 140 #define B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
 141 #define B_PARTITIONSHIFT        8
 142 #define B_PARTITIONMASK         0xff
 143 #define B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
 144 #define B_TYPESHIFT             0
 145 #define B_TYPEMASK              0xff
 146 #define B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)
 147
 148 #define B_MAGICMASK     0xf0000000U
 149 #define B_DEVMAGIC      0xa0000000U
 150
 151 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
 152         (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
 153         ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
 154         ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
 155
 156
 157 #ifdef  KERNEL
 158 #ifndef __ASSEMBLER__
 159 extern int boothowto;
 160 #endif  /* __ASSEMBLER__ */
 161 #endif
 162
 163 __BEGIN_DECLS
 164
 165 /* Reboot or halt the system.  */
 166 extern int reboot (int __howto) __THROW;
 167
 168 __END_DECLS
 169
 170
 171 #endif  /* _SYS_REBOOT_H_ */