The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/reboot.h

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    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_ */

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