1/*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/stand/userboot/userboot/biossmap.c 261504 2014-02-05 04:39:03Z jhb $");
29
30#include <stand.h>
31#include <sys/param.h>
32#include <sys/reboot.h>
33#include <sys/linker.h>
34#include <machine/pc/bios.h>
35#include <machine/metadata.h>
36
37#include "bootstrap.h"
38#include "libuserboot.h"
39
40#define GB (1024UL * 1024 * 1024)
41
42void
43bios_addsmapdata(struct preloaded_file *kfp)
44{
45	uint64_t lowmem, highmem;
46	int smapnum, len;
47	struct bios_smap smap[3], *sm;
48
49	CALLBACK(getmem, &lowmem, &highmem);
50
51	sm = &smap[0];
52
53	sm->base = 0;				/* base memory */
54	sm->length = 640 * 1024;
55	sm->type = SMAP_TYPE_MEMORY;
56	sm++;
57
58	sm->base = 0x100000;			/* extended memory */
59	sm->length = lowmem - 0x100000;
60	sm->type = SMAP_TYPE_MEMORY;
61	sm++;
62
63	smapnum = 2;
64
65        if (highmem != 0) {
66                sm->base = 4 * GB;
67                sm->length = highmem;
68                sm->type = SMAP_TYPE_MEMORY;
69		smapnum++;
70        }
71
72        len = smapnum * sizeof(struct bios_smap);
73        file_addmetadata(kfp, MODINFOMD_SMAP, len, &smap[0]);
74}
75