1 /* $NetBSD: dev_flash.c,v 1.6 2011/07/17 20:54:41 joerg 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 1.6 2011/07/17 20:54:41 joerg 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
38 int
flash_strategy(void * devdata,int rw,daddr_t blk,size_t size,void * buf,size_t * rsize)39 flash_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
55 int
flash_open(struct open_file * f,...)56 flash_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
72 int
flash_close(struct open_file * f)73 flash_close(struct open_file *f)
74 {
75 return 0;
76 }
77
78 int
flash_ioctl(struct open_file * f,u_long cmd,void * data)79 flash_ioctl(struct open_file *f, u_long cmd, void *data)
80 {
81 return EIO;
82 }
83