usr/src/grub/grub-0.97/stage2/freebsd.h

   1
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2001  Free Software Foundation, Inc.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  */
  20
  21 /* command-line parameter defines */
  22 #define RB_ASKNAME      0x01    /* ask for file name to reboot from */
  23 #define RB_SINGLE       0x02    /* reboot to single user only */
  24 #define RB_NOSYNC       0x04    /* dont sync before reboot */
  25 #define RB_HALT         0x08    /* don't reboot, just halt */
  26 #define RB_INITNAME     0x10    /* name given for /etc/init (unused) */
  27 #define RB_DFLTROOT     0x20    /* use compiled-in rootdev */
  28 #define RB_KDB          0x40    /* give control to kernel debugger */
  29 #define RB_RDONLY       0x80    /* mount root fs read-only */
  30 #define RB_DUMP         0x100   /* dump kernel memory before reboot */
  31 #define RB_MINIROOT     0x200   /* mini-root present in memory at boot time */
  32 #define RB_CONFIG       0x400   /* invoke user configuration routing */
  33 #define RB_VERBOSE      0x800   /* print all potentially useful info */
  34 #define RB_SERIAL       0x1000  /* user serial port as console */
  35 #define RB_CDROM        0x2000  /* use cdrom as root */
  36 #define RB_GDB          0x8000  /* use GDB remote debugger instead of DDB */
  37 #define RB_MUTE         0x10000 /* Come up with the console muted */
  38 #define RB_MULTIPLE     0x20000000      /* Use multiple consoles */
  39
  40 #define RB_BOOTINFO     0x80000000      /* have `struct bootinfo *' arg */
  41
  42 /*
  43  * Constants for converting boot-style device number to type,
  44  * adaptor (uba, mba, etc), unit number and partition number.
  45  * Type (== major device number) is in the low byte
  46  * for backward compatibility.  Except for that of the "magic
  47  * number", each mask applies to the shifted value.
  48  * Format:
  49  *       (4) (4) (4) (4)  (8)     (8)
  50  *      --------------------------------
  51  *      |MA | AD| CT| UN| PART  | TYPE |
  52  *      --------------------------------
  53  */
  54 #define B_ADAPTORSHIFT          24
  55 #define B_CONTROLLERSHIFT       20
  56 #define B_UNITSHIFT             16
  57 #define B_PARTITIONSHIFT        8
  58 #define B_TYPESHIFT             0
  59
  60 #define B_DEVMAGIC      ((unsigned long)0xa0000000)
  61
  62 #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
  63         (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
  64         ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
  65         ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
  66
  67
  68 /* Only change the version number if you break compatibility. */
  69 #define BOOTINFO_VERSION        1
  70
  71 #define N_BIOS_GEOM             8
  72
  73 /*
  74  * A zero bootinfo field often means that there is no info available.
  75  * Flags are used to indicate the validity of fields where zero is a
  76  * normal value.
  77  */
  78 struct bootinfo
  79   {
  80     unsigned int bi_version;
  81     unsigned char *bi_kernelname;
  82     struct nfs_diskless *bi_nfs_diskless;
  83     /* End of fields that are always present. */
  84 #define bi_endcommon            bi_n_bios_used
  85     unsigned int bi_n_bios_used;
  86     unsigned long bi_bios_geom[N_BIOS_GEOM];
  87     unsigned int bi_size;
  88     unsigned char bi_memsizes_valid;
  89     unsigned char bi_bios_dev;
  90     unsigned char bi_pad[2];
  91     unsigned long bi_basemem;
  92     unsigned long bi_extmem;
  93     unsigned long bi_symtab;
  94     unsigned long bi_esymtab;
  95   };