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Annotation of 43BSDTahoe/sys/h/reboot.h, revision 1.1.1.1

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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