1/*	$NetBSD: inkernel.c,v 1.8 2007/12/19 19:47:08 garbled Exp $	*/
2
3/*-
4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Kazuki Sakamoto.
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 <sys/param.h>
34
35#include "boot.h"
36#include "magic.h"
37
38#define	KERNENTRY	(RELOC - 0x200000)
39
40void
41init_in(u_long ladr)
42{
43	extern char _start[], _edata[];
44	char *p = (char *)(ladr + (_edata - _start));
45	u_int i;
46
47	for (i = 0; i < 4096; i++, p++) {
48		if (memcmp(p, prep_magic, PREP_MAGICSIZE) == 0) {
49			kern_len = *(int *)(p + PREP_MAGICSIZE);
50			memmove((char *)KERNENTRY,
51				p + PREP_MAGICSIZE + KERNLENSIZE, kern_len);
52			return;
53		}
54	}
55	printf("magic is not found.\n");
56}
57
58int
59inopen(struct open_file *p)
60{
61
62	if (kern_len)
63		return (0);
64	return (EINVAL);
65}
66
67int
68inclose(struct open_file *p)
69{
70
71	return (0);
72}
73
74int
75instrategy(void *devdata, int func, daddr_t blk, size_t size, void *buf,
76	size_t *rsize)
77{
78
79	memcpy(buf, (char *)KERNENTRY + ((long)blk * DEV_BSIZE), size);
80	*rsize = size;
81	return (0);
82}
83