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bootinfo_memmap.c revision 1.2 
      1 /*	$NetBSD: bootinfo_memmap.c,v 1.2 2001/07/07 22:57:57 perry Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999
      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  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed for the NetBSD Project
     18  *	by Matthias Drochner.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 #include <lib/libsa/stand.h>
     36 #include "libi386.h"
     37 #include "bootinfo.h"
     38 
     39 extern int getmementry __P((int *, int *));
     40 
     41 void
     42 bi_getmemmap()
     43 {
     44 	int buf[5], i, nranges, n;
     45 	struct btinfo_memmap *bimm;
     46 
     47 	nranges = 0;
     48 	i = 0;
     49 	do {
     50 		if (getmementry(&i, buf))
     51 			break;
     52 		nranges++;
     53 	} while (i);
     54 
     55 	bimm = alloc(sizeof(struct btinfo_memmap)
     56 		+ (nranges - 1) * sizeof(struct bi_memmap_entry));
     57 
     58 	i = 0;
     59 	for (n = 0; n < nranges; n++) {
     60 		getmementry(&i, buf);
     61 		memcpy(&bimm->entry[n], buf, sizeof(struct bi_memmap_entry));
     62 	}
     63 	bimm->num = nranges;
     64 
     65 	BI_ADD(bimm, BTINFO_MEMMAP, sizeof(struct btinfo_memmap)
     66 	       + (nranges - 1) * sizeof(struct bi_memmap_entry));
     67 }
     68