1/*	$NetBSD: bootinfo.c,v 1.2 2019/12/14 02:58:20 tsutsui Exp $	*/
2
3/*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jonathan Stone, Michael Hitch and Simon Burge.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <machine/types.h>
33#include <lib/libsa/stand.h>
34#include <lib/libkern/libkern.h>
35
36#include "bootinfo.h"
37
38char *bootinfo = NULL;
39static char *bi_next;
40static int bi_size;
41
42void bi_init(paddr_t addr)
43{
44	struct btinfo_common *bi;
45	struct btinfo_magic bi_magic;
46
47	bootinfo = (char *)addr;
48	bi = (struct btinfo_common *)bootinfo;
49	bi->next = bi->type = 0;
50	bi_next = bootinfo;
51	bi_size = 0;
52
53	bi_magic.magic = BOOTINFO_MAGIC;
54	bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic));
55}
56
57void bi_add(void *new, int type, int size)
58{
59	struct btinfo_common *bi;
60
61	if (bi_size + size > BOOTINFO_SIZE)
62		return;				/* XXX error? */
63
64	bi = new;
65	bi->next = size;
66	bi->type = type;
67	memcpy(bi_next, new, size);
68	bi_next += size;
69
70	bi = (struct btinfo_common *)bi_next;
71	bi->next = bi->type = 0;
72}
73