xref: /netbsd-src/sys/arch/hpcmips/stand/lcboot/dev_flash.c (revision b1c86f5f087524e68db12794ee9c3e3da1ab17a0)
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 #include <machine/stdarg.h>
34 
35 #include "extern.h"
36 
37 #define READ_CHUNK	0x10000
38 
39 int
40 flash_strategy(void *devdata, int rw, daddr_t blk,
41 	       size_t size, void *buf , size_t *rsize)
42 {
43 	u_int8_t	*src;
44 	size_t		count;
45 
46 	if (rw != F_READ)
47 		return EIO;
48 
49 	src = (u_int8_t *) KERN_ROMBASE + dbtob(blk);
50 	count = size < READ_CHUNK ? size : READ_CHUNK;
51 	memcpy(buf, src, count);
52 	*rsize = count;
53         return 0;
54 }
55 
56 int
57 flash_open(struct open_file *f, ...)
58 {
59 	char	*fname;
60 	char	**file;
61 	va_list	ap;
62 
63 	va_start(ap, f);
64 	fname = va_arg(ap, char *);
65 	file = va_arg(ap, char **);
66 	va_end(ap);
67 
68 	*file = NULL;
69 
70 	return 0;
71 }
72 
73 int
74 flash_close(struct open_file *f)
75 {
76 	return 0;
77 }
78 
79 int
80 flash_ioctl(struct open_file *f, u_long cmd, void *data)
81 {
82 	return EIO;
83 }
84