/*

 *  GRUB  --  GRand Unified Bootloader

 *  Copyright (C) 2001  Free Software Foundation, Inc.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

 */

/* command-line parameter defines */

#define RB_ASKNAME      0x01	/* ask for file name to reboot from */

#define RB_SINGLE       0x02	/* reboot to single user only */

#define RB_NOSYNC       0x04	/* dont sync before reboot */

#define RB_HALT         0x08	/* don't reboot, just halt */

#define RB_INITNAME     0x10	/* name given for /etc/init (unused) */

#define RB_DFLTROOT     0x20	/* use compiled-in rootdev */

#define RB_KDB          0x40	/* give control to kernel debugger */

#define RB_RDONLY       0x80	/* mount root fs read-only */

#define RB_DUMP         0x100	/* dump kernel memory before reboot */

#define RB_MINIROOT     0x200	/* mini-root present in memory at boot time */

#define RB_CONFIG       0x400	/* invoke user configuration routing */

#define RB_VERBOSE      0x800	/* print all potentially useful info */

#define RB_SERIAL       0x1000	/* user serial port as console */

#define RB_CDROM        0x2000	/* use cdrom as root */

#define RB_GDB		0x8000	/* use GDB remote debugger instead of DDB */

#define RB_MUTE		0x10000	/* Come up with the console muted */

#define RB_MULTIPLE	0x20000000	/* Use multiple consoles */

#define RB_BOOTINFO     0x80000000	/* have `struct bootinfo *' arg */

/*

 * 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_CONTROLLERSHIFT       20

#define B_UNITSHIFT             16

#define B_PARTITIONSHIFT        8

#define B_TYPESHIFT             0

#define B_DEVMAGIC      ((unsigned long)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)

/* Only change the version number if you break compatibility. */

#define BOOTINFO_VERSION        1

#define N_BIOS_GEOM             8

/*

 * A zero bootinfo field often means that there is no info available.

 * Flags are used to indicate the validity of fields where zero is a

 * normal value.

 */

struct bootinfo

  {

    unsigned int bi_version;

    unsigned char *bi_kernelname;

    struct nfs_diskless *bi_nfs_diskless;

    /* End of fields that are always present. */

#define bi_endcommon            bi_n_bios_used

    unsigned int bi_n_bios_used;

    unsigned long bi_bios_geom[N_BIOS_GEOM];

    unsigned int bi_size;

    unsigned char bi_memsizes_valid;

    unsigned char bi_bios_dev;

    unsigned char bi_pad[2];

    unsigned long bi_basemem;

    unsigned long bi_extmem;

    unsigned long bi_symtab;

    unsigned long bi_esymtab;

  };