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Annotation of sys/sys/reboot.h, Revision 1.1.1.1

1.1       nbrk        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 */