1/* $NetBSD: dev_flash.c,v 1.5 2009/10/26 19:16:55 cegger Exp $ */
2
3/*
4 * Copyright (c) 2003 Naoto Shimazaki.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY NAOTO SHIMAZAKI AND CONTRIBUTORS ``AS IS''
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE NAOTO OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
26 * THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#include <sys/cdefs.h>
29__KERNEL_RCSID(0, "$NetBSD: dev_flash.c,v 1.5 2009/10/26 19:16:55 cegger Exp $");
30
31#include <sys/param.h>
32#include <lib/libsa/stand.h>
33
34#include "extern.h"
35
36#define READ_CHUNK	0x10000
37
38int
39flash_strategy(void *devdata, int rw, daddr_t blk,
40	       size_t size, void *buf , size_t *rsize)
41{
42	u_int8_t	*src;
43	size_t		count;
44
45	if (rw != F_READ)
46		return EIO;
47
48	src = (u_int8_t *) KERN_ROMBASE + dbtob(blk);
49	count = size < READ_CHUNK ? size : READ_CHUNK;
50	memcpy(buf, src, count);
51	*rsize = count;
52        return 0;
53}
54
55int
56flash_open(struct open_file *f, ...)
57{
58	char	*fname;
59	char	**file;
60	va_list	ap;
61
62	va_start(ap, f);
63	fname = va_arg(ap, char *);
64	file = va_arg(ap, char **);
65	va_end(ap);
66
67	*file = NULL;
68
69	return 0;
70}
71
72int
73flash_close(struct open_file *f)
74{
75	return 0;
76}
77
78int
79flash_ioctl(struct open_file *f, u_long cmd, void *data)
80{
81	return EIO;
82}
83