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89 lines
3.9 KiB
C
89 lines
3.9 KiB
C
/*
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* Copyright (c) 1982, 1986, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)reboot.h 8.1 (Berkeley) 6/2/93
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*/
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/*
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* Arguments to reboot system call.
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* These are passed to boot program in r11,
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* and on to init.
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*/
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#define RB_AUTOBOOT 0 /* flags for system auto-booting itself */
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#define RB_ASKNAME 0x01 /* ask for file name to reboot from */
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#define RB_SINGLE 0x02 /* reboot to single user only */
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#define RB_NOSYNC 0x04 /* dont sync before reboot */
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#define RB_HALT 0x08 /* don't reboot, just halt */
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#define RB_INITNAME 0x10 /* name given for /etc/init (unused) */
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#define RB_DFLTROOT 0x20 /* use compiled-in rootdev */
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#define RB_KDB 0x40 /* give control to kernel debugger */
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#define RB_RDONLY 0x80 /* mount root fs read-only */
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#define RB_DUMP 0x100 /* dump kernel memory before reboot */
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#define RB_MINIROOT 0x200 /* mini-root present in memory at boot time */
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/*
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* Constants for converting boot-style device number to type,
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* adaptor (uba, mba, etc), unit number and partition number.
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* Type (== major device number) is in the low byte
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* for backward compatibility. Except for that of the "magic
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* number", each mask applies to the shifted value.
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* Format:
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* (4) (4) (4) (4) (8) (8)
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* --------------------------------
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* |MA | AD| CT| UN| PART | TYPE |
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* --------------------------------
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*/
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#define B_ADAPTORSHIFT 24
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#define B_ADAPTORMASK 0x0f
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#define B_ADAPTOR(val) (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
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#define B_CONTROLLERSHIFT 20
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#define B_CONTROLLERMASK 0xf
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#define B_CONTROLLER(val) (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
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#define B_UNITSHIFT 16
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#define B_UNITMASK 0xf
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#define B_UNIT(val) (((val) >> B_UNITSHIFT) & B_UNITMASK)
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#define B_PARTITIONSHIFT 8
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#define B_PARTITIONMASK 0xff
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#define B_PARTITION(val) (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
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#define B_TYPESHIFT 0
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#define B_TYPEMASK 0xff
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#define B_TYPE(val) (((val) >> B_TYPESHIFT) & B_TYPEMASK)
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#define B_MAGICMASK ((u_long)0xf0000000)
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#define B_DEVMAGIC ((u_long)0xa0000000)
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#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
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(((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
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((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
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((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
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