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      1 /*	$NetBSD: bootinfo.h,v 1.1 2014/02/24 07:23:43 skrll 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 
     31 #ifndef _LOCORE
     32 
     33 struct btinfo_common {
     34 	int len;
     35 	int type;
     36 };
     37 
     38 #define BTINFO_MAGIC		0
     39 #define BTINFO_KERNELFILE	1
     40 #define BTINFO_SYMTAB		2
     41 
     42 struct btinfo_magic {
     43 	struct btinfo_common common;
     44 	int magic;
     45 };
     46 
     47 struct btinfo_kernelfile {
     48 	struct btinfo_common common;
     49 	char name[1];	/* variable length */
     50 };
     51 
     52 struct btinfo_symtab {
     53 	struct btinfo_common common;
     54 	int nsym;
     55 	int ssym;
     56 	int esym;
     57 };
     58 
     59 #endif /* _LOCORE */
     60 
     61 #ifdef _KERNEL
     62 
     63 #define BOOTINFO_MAXSIZE 1024
     64 #define BOOTINFO_DATASIZE (BOOTINFO_MAXSIZE - 2 * sizeof(uint32_t))
     65 
     66 #ifndef _LOCORE
     67 /*
     68  * Structure that holds the information passed by the boot loader.
     69  */
     70 struct bootinfo {
     71 	/* Number of bootinfo_* entries in bi_data. */
     72 	uint32_t	bi_nentries;
     73 	uint32_t	bi_offset;
     74 
     75 	/* Raw data of bootinfo entries.  The first one (if any) is
     76 	 * found at bi_data[0] and can be casted to (bootinfo_common *).
     77 	 * Once this is done, the following entry is found at 'len'
     78 	 * offset as specified by the previous entry. */
     79 	uint8_t		bi_data[BOOTINFO_DATASIZE];
     80 };
     81 
     82 void *lookup_bootinfo(int);
     83 #endif /* _LOCORE */
     84 
     85 #endif /* _KERNEL */
     86