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Annotation of 43BSDTahoe/sys/h/reboot.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  *
        !            17:  *     @(#)reboot.h    7.5 (Berkeley) 6/27/88
        !            18:  */
        !            19: 
        !            20: /*
        !            21:  * Arguments to reboot system call.
        !            22:  * These are passed to boot program in r11,
        !            23:  * and on to init.
        !            24:  */
        !            25: #define        RB_AUTOBOOT     0       /* flags for system auto-booting itself */
        !            26: 
        !            27: #define        RB_ASKNAME      0x01    /* ask for file name to reboot from */
        !            28: #define        RB_SINGLE       0x02    /* reboot to single user only */
        !            29: #define        RB_NOSYNC       0x04    /* dont sync before reboot */
        !            30: #define        RB_HALT         0x08    /* don't reboot, just halt */
        !            31: #define        RB_INITNAME     0x10    /* name given for /etc/init (unused) */
        !            32: #define        RB_DFLTROOT     0x20    /* use compiled-in rootdev */
        !            33: #define        RB_KDB          0x40    /* give control to kernel debugger */
        !            34: #define        RB_RDONLY       0x80    /* mount root fs read-only */
        !            35: #define        RB_DUMP         0x100   /* dump kernel memory before reboot */
        !            36: 
        !            37: /*
        !            38:  * Constants for converting boot-style device number to type,
        !            39:  * adaptor (uba, mba, etc), unit number and partition number.
        !            40:  * Type (== major device number) is in the low byte
        !            41:  * for backward compatibility.  Except for that of the "magic
        !            42:  * number", each mask applies to the shifted value.
        !            43:  * Format:
        !            44:  *      (4) (4) (4) (4)  (8)     (8)
        !            45:  *     --------------------------------
        !            46:  *     |MA | AD| CT| UN| PART  | TYPE |
        !            47:  *     --------------------------------
        !            48:  */
        !            49: #define        B_ADAPTORSHIFT          24
        !            50: #define        B_ADAPTORMASK           0x0f
        !            51: #define        B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
        !            52: #define B_CONTROLLERSHIFT      20
        !            53: #define B_CONTROLLERMASK       0xf
        !            54: #define        B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
        !            55: #define B_UNITSHIFT            16
        !            56: #define B_UNITMASK             0xf
        !            57: #define        B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
        !            58: #define B_PARTITIONSHIFT       8
        !            59: #define B_PARTITIONMASK                0xff
        !            60: #define        B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
        !            61: #define        B_TYPESHIFT             0
        !            62: #define        B_TYPEMASK              0xff
        !            63: #define        B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)
        !            64: 
        !            65: #define        B_MAGICMASK     ((u_long)0xf0000000)
        !            66: #define        B_DEVMAGIC      ((u_long)0xa0000000)
        !            67: 
        !            68: #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
        !            69:        (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
        !            70:        ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
        !            71:        ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)

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