The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/bootinfo.h

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    1 /*-
    2  * Copyright (C) 1994 by Rodney W. Grimes, Milwaukie, Oregon  97222
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer as
   10  *    the first lines of this file unmodified.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. All advertising materials mentioning features or use of this software
   15  *    must display the following acknowledgement:
   16  *      This product includes software developed by Rodney W. Grimes.
   17  * 4. The name of the author may not be used to endorse or promote products
   18  *    derived from this software without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY RODNEY W. GRIMES ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL RODNEY W. GRIMES BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  *
   32  * $FreeBSD: src/sys/i386/include/bootinfo.h,v 1.5.8.1 1999/09/05 08:11:38 peter Exp $
   33  */
   34 
   35 #ifndef _MACHINE_BOOTINFO_H_
   36 #define _MACHINE_BOOTINFO_H_
   37 
   38 /* Only change the version number if you break compatibility. */
   39 #define BOOTINFO_VERSION        1
   40 
   41 #define N_BIOS_GEOM             8
   42 
   43 /*
   44  * A zero bootinfo field often means that there is no info available.
   45  * Flags are used to indicate the validity of fields where zero is a
   46  * normal value.
   47  */
   48 struct bootinfo {
   49         unsigned int            bi_version;
   50         unsigned char           *bi_kernelname;
   51         struct nfs_diskless     *bi_nfs_diskless;
   52                                 /* End of fields that are always present. */
   53 #define bi_endcommon            bi_n_bios_used
   54         unsigned int            bi_n_bios_used;
   55         unsigned long           bi_bios_geom[N_BIOS_GEOM];
   56         unsigned int            bi_size;
   57         unsigned char           bi_memsizes_valid;
   58         unsigned char           bi_pad[3];
   59         unsigned long           bi_basemem;
   60         unsigned long           bi_extmem;
   61         unsigned long           bi_symtab;
   62         unsigned long           bi_esymtab;
   63 };
   64 
   65 #ifdef KERNEL
   66 extern struct bootinfo  bootinfo;
   67 #endif
   68 
   69 #endif  /* !_MACHINE_BOOTINFO_H_ */

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