1 /* $NetBSD: bootinfo.c,v 1.3 2008/04/28 20:23:36 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 <sys/param.h>
33 #include <machine/types.h>
34 #include <machine/bootinfo.h>
35 #include <lib/libsa/stand.h>
36 #include <lib/libkern/libkern.h>
37
38 #include "boot.h"
39
40 static char *bootinfo = NULL;
41 static char *bi_next;
42 static int bi_size;
43
44 u_long
bi_init(u_long addr)45 bi_init(u_long addr)
46 {
47 struct btinfo_common *bi;
48 struct btinfo_magic bi_magic;
49 uint64_t *endp;
50
51 endp = (uint64_t *)ALIGN(addr);
52
53 /*
54 * Allocate and zero-fill bootinfo structure.
55 */
56 sparc64_memset(endp, 0, BOOTINFO_SIZE);
57
58 /*
59 * For the first word we load our end address,
60 * giving enough space for the bootinfo structure.
61 */
62 endp[0] = (uint64_t)(u_long)((char *)endp + BOOTINFO_SIZE);
63 bootinfo = (char *)ALIGN(&endp[2]);
64 endp[1] = (uint64_t)(u_long)bootinfo;
65 bi = (struct btinfo_common *)bootinfo;
66 bi->next = bi->type = 0;
67 bi_next = bootinfo;
68 bi_size = 0;
69
70 bi_magic.magic = BOOTINFO_MAGIC;
71 bi_add(&bi_magic, BTINFO_MAGIC, sizeof(bi_magic));
72 return (u_long) endp;
73 }
74
75 void
bi_add(void * new,int type,size_t size)76 bi_add(void *new, int type, size_t size)
77 {
78 struct btinfo_common *bi;
79
80 if (bi_size + size > BOOTINFO_SIZE)
81 return; /* XXX error? */
82
83 bi = new;
84 bi->next = ALIGN(size);
85 bi->type = type;
86 sparc64_memcpy(bi_next, new, size);
87 bi_next += ALIGN(size);
88
89 bi = (struct btinfo_common *)bi_next;
90 bi->next = bi->type = 0;
91 }
92