1 /* $NetBSD: bootinfo.c,v 1.6 2008/04/28 20:23:30 martin 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 <lib/libsa/stand.h>
33 #include <lib/libkern/libkern.h>
34
35 #include <machine/bootinfo.h>
36
37 static char *bootinfo = NULL;
38 static char *bi_next;
39 static int bi_size;
40
41 void
bi_init(paddr_t addr)42 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
57 void
bi_add(void * new,int type,int size)58 bi_add(void *new, int type, int size)
59 {
60 struct btinfo_common *bi;
61
62 if (bi_size + size > BOOTINFO_SIZE)
63 return; /* XXX error? */
64
65 bi = new;
66 bi->next = size;
67 bi->type = type;
68 memcpy(bi_next, new, size);
69 bi_next += size;
70
71 bi = (struct btinfo_common *)bi_next;
72 bi->next = bi->type = 0;
73
74 bi_size += size;
75 }
76