1 /* $NetBSD: inkernel.c,v 1.9 2008/04/28 20:23:33 martin 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
40 void
init_in(u_long ladr)41 init_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
58 int
inopen(struct open_file * p)59 inopen(struct open_file *p)
60 {
61
62 if (kern_len)
63 return (0);
64 return (EINVAL);
65 }
66
67 int
inclose(struct open_file * p)68 inclose(struct open_file *p)
69 {
70
71 return (0);
72 }
73
74 int
instrategy(void * devdata,int func,daddr_t blk,size_t size,void * buf,size_t * rsize)75 instrategy(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