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Annotation of Gnu-Mach/include/sys/reboot.h, revision 1.1

1.1     ! root        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  [email protected]
        !            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:  * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
        !            28:  * All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms are permitted
        !            31:  * provided that the above copyright notice and this paragraph are
        !            32:  * duplicated in all such forms and that any documentation,
        !            33:  * advertising materials, and other materials related to such
        !            34:  * distribution and use acknowledge that the software was developed
        !            35:  * by the University of California, Berkeley.  The name of the
        !            36:  * University may not be used to endorse or promote products derived
        !            37:  * from this software without specific prior written permission.
        !            38:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            39:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            40:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            41:  *
        !            42:  *     @(#)reboot.h    7.5 (Berkeley) 6/27/88
        !            43:  */
        !            44: /*
        !            45:  * Warning: The contents of this file are deprecated;
        !            46:  * it should only ever be used for BSD and Mach 3 compatibility.
        !            47:  * As the above copyright notice suggests, this file originated in BSD;
        !            48:  * it is mostly the same, except the flags after RB_DFLTROOT
        !            49:  * have diverged from BSD.
        !            50:  */
        !            51: #ifndef        _MACH_SYS_REBOOT_H_
        !            52: #define        _MACH_SYS_REBOOT_H_
        !            53: 
        !            54: /*
        !            55:  * Arguments to reboot system call.
        !            56:  * These are converted to switches, and passed to startup program,
        !            57:  * and on to init.
        !            58:  */
        !            59: #define        RB_AUTOBOOT     0       /* flags for system auto-booting itself */
        !            60: 
        !            61: #define        RB_ASKNAME      0x01    /* -a: ask for file name to reboot from */
        !            62: #define        RB_SINGLE       0x02    /* -s: reboot to single user only */
        !            63: #define        RB_KDB          0x04    /* -d: kernel debugger symbols loaded */
        !            64: #define        RB_HALT         0x08    /* -h: enter KDB at bootup */
        !            65:                                /*     for host_reboot(): don't reboot,
        !            66:                                       just halt */
        !            67: #define        RB_INITNAME     0x10    /* -i: name given for /etc/init (unused) */
        !            68: #define        RB_DFLTROOT     0x20    /*     use compiled-in rootdev */
        !            69: #define        RB_NOBOOTRC     0x20    /* -b: don't run /etc/rc.boot */
        !            70: #define RB_ALTBOOT     0x40    /*     use /boot.old vs /boot */
        !            71: #define        RB_UNIPROC      0x80    /* -u: start only one processor */
        !            72: 
        !            73: #define        RB_SHIFT        8       /* second byte is for ux */
        !            74: 
        !            75: #define        RB_DEBUGGER     0x1000  /*     for host_reboot(): enter kernel
        !            76:                                       debugger from user level */
        !            77: 
        !            78: /* Corresponding BSD definitions, where they disagree with the Mach flags.  */
        !            79: #define BSD_RB_NOSYNC   0x04    /* dont sync before reboot */
        !            80: #define BSD_RB_KDB      0x40    /* give control to kernel debugger */
        !            81: #define BSD_RB_RDONLY   0x80    /* mount root fs read-only */
        !            82: #define BSD_RB_DUMP     0x100   /* dump kernel memory before reboot */
        !            83: #define BSD_RB_MINIROOT 0x200   /* mini-root present in memory at boot time */
        !            84: #define BSD_RB_CONFIG   0x400   /* invoke user configuration routing */
        !            85: 
        !            86: 
        !            87: /*
        !            88:  * Constants for converting boot-style device number to type,
        !            89:  * adaptor (uba, mba, etc), unit number and partition number.
        !            90:  * Type (== major device number) is in the low byte
        !            91:  * for backward compatibility.  Except for that of the "magic
        !            92:  * number", each mask applies to the shifted value.
        !            93:  * Format:
        !            94:  *      (4) (4) (4) (4)  (8)     (8)
        !            95:  *     --------------------------------
        !            96:  *     |MA | AD| CT| UN| PART  | TYPE |
        !            97:  *     --------------------------------
        !            98:  */
        !            99: #define        B_ADAPTORSHIFT          24
        !           100: #define        B_ADAPTORMASK           0x0f
        !           101: #define        B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
        !           102: #define B_CONTROLLERSHIFT      20
        !           103: #define B_CONTROLLERMASK       0xf
        !           104: #define        B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
        !           105: #define B_UNITSHIFT            16
        !           106: #define B_UNITMASK             0xf
        !           107: #define        B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
        !           108: #define B_PARTITIONSHIFT       8
        !           109: #define B_PARTITIONMASK                0xff
        !           110: #define        B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
        !           111: #define        B_TYPESHIFT             0
        !           112: #define        B_TYPEMASK              0xff
        !           113: #define        B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)
        !           114: 
        !           115: #define        B_MAGICMASK     ((u_int)0xf0000000U)
        !           116: #define        B_DEVMAGIC      ((u_int)0xa0000000U)
        !           117: 
        !           118: #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
        !           119:        (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
        !           120:        ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
        !           121:        ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
        !           122: 
        !           123: #endif /* _MACH_SYS_REBOOT_H_ */

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