bootinfo.h revision 199767f8919635c4928607450d9e0abb932109ce
/*-
* Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon 97222
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Rodney W. Grimes.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_BOOTINFO_H_
#define _MACHINE_BOOTINFO_H_
/* 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 {
/* End of fields that are always present. */
#define bi_endcommon bi_n_bios_used
/* Items below only from advanced bootloader */
};
#ifdef _KERNEL
#endif
/*
* 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) (8) (4) (8) (8)
* --------------------------------
* |MA | SLICE | UN| PART | TYPE |
* --------------------------------
*/
#define B_SLICESHIFT 20
#define B_SLICEMASK 0xff
#define B_UNITSHIFT 16
#define B_UNITMASK 0xf
#define B_PARTITIONSHIFT 8
#define B_PARTITIONMASK 0xff
#define B_TYPESHIFT 0
#define B_TYPEMASK 0xff
#define B_MAGICMASK 0xf0000000
#define B_DEVMAGIC 0xa0000000
#define BASE_SLICE 2
#define COMPATIBILITY_SLICE 0
#define MAX_SLICES 32
#define WHOLE_DISK_SLICE 1
#endif /* !_MACHINE_BOOTINFO_H_ */