xref: /minix3/sys/arch/i386/stand/lib/bootinfo_memmap.c (revision 58a2b0008e28f606a7f7f5faaeaba4faac57a1ea)
1*58a2b000SEvgeniy Ivanov /*	$NetBSD: bootinfo_memmap.c,v 1.5 2008/12/14 17:03:43 christos Exp $	*/
2*58a2b000SEvgeniy Ivanov 
3*58a2b000SEvgeniy Ivanov /*
4*58a2b000SEvgeniy Ivanov  * Copyright (c) 1999
5*58a2b000SEvgeniy Ivanov  *	Matthias Drochner.  All rights reserved.
6*58a2b000SEvgeniy Ivanov  *
7*58a2b000SEvgeniy Ivanov  * Redistribution and use in source and binary forms, with or without
8*58a2b000SEvgeniy Ivanov  * modification, are permitted provided that the following conditions
9*58a2b000SEvgeniy Ivanov  * are met:
10*58a2b000SEvgeniy Ivanov  * 1. Redistributions of source code must retain the above copyright
11*58a2b000SEvgeniy Ivanov  *    notice, this list of conditions and the following disclaimer.
12*58a2b000SEvgeniy Ivanov  * 2. Redistributions in binary form must reproduce the above copyright
13*58a2b000SEvgeniy Ivanov  *    notice, this list of conditions and the following disclaimer in the
14*58a2b000SEvgeniy Ivanov  *    documentation and/or other materials provided with the distribution.
15*58a2b000SEvgeniy Ivanov  *
16*58a2b000SEvgeniy Ivanov  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17*58a2b000SEvgeniy Ivanov  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18*58a2b000SEvgeniy Ivanov  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19*58a2b000SEvgeniy Ivanov  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20*58a2b000SEvgeniy Ivanov  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21*58a2b000SEvgeniy Ivanov  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22*58a2b000SEvgeniy Ivanov  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23*58a2b000SEvgeniy Ivanov  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24*58a2b000SEvgeniy Ivanov  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25*58a2b000SEvgeniy Ivanov  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26*58a2b000SEvgeniy Ivanov  *
27*58a2b000SEvgeniy Ivanov  */
28*58a2b000SEvgeniy Ivanov 
29*58a2b000SEvgeniy Ivanov #include <lib/libsa/stand.h>
30*58a2b000SEvgeniy Ivanov #include "libi386.h"
31*58a2b000SEvgeniy Ivanov #include "bootinfo.h"
32*58a2b000SEvgeniy Ivanov 
33*58a2b000SEvgeniy Ivanov extern int getmementry(int *, int *);
34*58a2b000SEvgeniy Ivanov 
35*58a2b000SEvgeniy Ivanov void
bi_getmemmap(void)36*58a2b000SEvgeniy Ivanov bi_getmemmap(void)
37*58a2b000SEvgeniy Ivanov {
38*58a2b000SEvgeniy Ivanov 	int buf[5], i, nranges, n;
39*58a2b000SEvgeniy Ivanov 	struct btinfo_memmap *bimm;
40*58a2b000SEvgeniy Ivanov 
41*58a2b000SEvgeniy Ivanov 	nranges = 0;
42*58a2b000SEvgeniy Ivanov 	i = 0;
43*58a2b000SEvgeniy Ivanov 	do {
44*58a2b000SEvgeniy Ivanov 		if (getmementry(&i, buf))
45*58a2b000SEvgeniy Ivanov 			break;
46*58a2b000SEvgeniy Ivanov 		nranges++;
47*58a2b000SEvgeniy Ivanov 	} while (i);
48*58a2b000SEvgeniy Ivanov 
49*58a2b000SEvgeniy Ivanov 	bimm = alloc(sizeof(struct btinfo_memmap)
50*58a2b000SEvgeniy Ivanov 		+ (nranges - 1) * sizeof(struct bi_memmap_entry));
51*58a2b000SEvgeniy Ivanov 
52*58a2b000SEvgeniy Ivanov 	i = 0;
53*58a2b000SEvgeniy Ivanov 	for (n = 0; n < nranges; n++) {
54*58a2b000SEvgeniy Ivanov 		getmementry(&i, buf);
55*58a2b000SEvgeniy Ivanov 		memcpy(&bimm->entry[n], buf, sizeof(struct bi_memmap_entry));
56*58a2b000SEvgeniy Ivanov 	}
57*58a2b000SEvgeniy Ivanov 	bimm->num = nranges;
58*58a2b000SEvgeniy Ivanov 
59*58a2b000SEvgeniy Ivanov 	BI_ADD(bimm, BTINFO_MEMMAP, sizeof(struct btinfo_memmap)
60*58a2b000SEvgeniy Ivanov 	       + (nranges - 1) * sizeof(struct bi_memmap_entry));
61*58a2b000SEvgeniy Ivanov }
62