/*      $OpenBSD: reboot.h,v 1.21 2025/09/16 12:18:10 hshoexer Exp $    */
/*      $NetBSD: reboot.h,v 1.9 1996/04/22 01:23:25 christos Exp $      */

/*
 * Copyright (c) 1982, 1986, 1988, 1993, 1994
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *      @(#)reboot.h    8.2 (Berkeley) 7/10/94
 */

#ifndef _SYS_REBOOT_H_
#define _SYS_REBOOT_H_

/*
 * Arguments to reboot system call.  These are passed to the boot program,
 * and then on to init.
 */
#define RB_AUTOBOOT     0       /* flags for system auto-booting itself */

#define RB_ASKNAME      0x00001 /* ask for file name to reboot from */
#define RB_SINGLE       0x00002 /* reboot to single user only */
#define RB_NOSYNC       0x00004 /* dont sync before reboot */
#define RB_HALT         0x00008 /* don't reboot, just halt */
#define RB_INITNAME     0x00010 /* name given for /etc/init (unused) */
#define RB_DFLTROOT     0x00020 /* use compiled-in rootdev */
#define RB_KDB          0x00040 /* give control to kernel debugger */
#define RB_RDONLY       0x00080 /* mount root fs read-only */
#define RB_DUMP         0x00100 /* dump kernel memory before reboot */
#define RB_MINIROOT     0x00200 /* mini-root present in memory at boot time */
#define RB_CONFIG       0x00400 /* change configured devices */
#define RB_TIMEBAD      0x00800 /* don't call resettodr() in boot() */
#define RB_POWERDOWN    0x01000 /* attempt to power down machine */
#define RB_SERCONS      0x02000 /* use serial console if available */
#define RB_USERREQ      0x04000 /* boot() called at user request (e.g. ddb) */
#define RB_RESET        0x08000 /* just reset, no cleanup  */
#define RB_GOODRANDOM   0x10000 /* excellent random seed loaded */
#define RB_UNHIBERNATE  0x20000 /* unhibernate */
#define RB_COCOVM       0x40000 /* booting confidential VM (e.g. SEV enabled) */

/*
 * Constants for converting boot-style device number to type,
 * adaptor (uba, mba, etc), unit number and partition number.
 * Type (== major device number) is in the low byte
 * for backward compatibility.  Except for that of the "magic
 * number", each mask applies to the shifted value.
 * Format:
 *       (4) (4) (4) (4)  (8)     (8)
 *      --------------------------------
 *      |MA | AD| CT| UN| PART  | TYPE |
 *      --------------------------------
 */
#define B_ADAPTORSHIFT          24
#define B_ADAPTORMASK           0x0f
#define B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
#define B_CONTROLLERSHIFT       20
#define B_CONTROLLERMASK        0xf
#define B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
#define B_UNITSHIFT             16
#define B_UNITMASK              0xf
#define B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
#define B_PARTITIONSHIFT        8
#define B_PARTITIONMASK         0xff
#define B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
#define B_TYPESHIFT             0
#define B_TYPEMASK              0xff
#define B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)

#define B_MAGICMASK     0xf0000000
#define B_DEVMAGIC      0xa0000000

#define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
        (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
        ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
        ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)

#if     defined(_KERNEL) && !defined(_STANDALONE) && !defined(_LOCORE)

__BEGIN_DECLS
__dead void     reboot(int);
__dead void     boot(int);
__END_DECLS

#endif /* _KERNEL */

#endif /* !_SYS_REBOOT_H_ */