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      1 /*	$NetBSD: bootinfo.h,v 1.6 2012/05/28 19:24:29 martin Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1997
      5  *	Matthias Drochner.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  *
     27  */
     28 
     29 #define BOOTINFO_MAGIC	0xb007babe
     30 #define BOOTINFO_SIZE	1024
     31 
     32 /*
     33  * The bootinfo structure is placed at the end of the kernel, aligned
     34  * to a page.
     35  */
     36 
     37 struct btinfo_common {
     38 	int next;		/* offset of next item, or zero */
     39 	int type;
     40 };
     41 
     42 #define BTINFO_MAGIC		1
     43 #define BTINFO_SYMTAB		2
     44 #define BTINFO_KERNELFILE	3
     45 #define BTINFO_BOOTHOWTO	4
     46 
     47 struct btinfo_magic {
     48 	struct btinfo_common common;
     49 	int magic;
     50 };
     51 
     52 struct btinfo_symtab {
     53 	struct btinfo_common common;
     54 	int nsym;
     55 	int ssym;
     56 	int esym;
     57 };
     58 
     59 struct btinfo_kernelfile {
     60 	struct btinfo_common common;
     61 	char name[1];	/* variable length */
     62 };
     63 
     64 struct btinfo_boothowto {
     65 	struct btinfo_common common;
     66 	int boothowto;
     67 };
     68 
     69 #ifdef _KERNEL
     70 void *lookup_bootinfo(int);
     71 #endif
     72