1 /* $NetBSD: dev_flash.c,v 1.1 2003/06/24 12:27:03 igy Exp $ */ 2 3 /* 4 * Copyright (c) 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Naoto Shimazaki. 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: dev_flash.c,v 1.1 2003/06/24 12:27:03 igy Exp $"); 40 41 #include <sys/param.h> 42 #include <lib/libsa/stand.h> 43 44 #include "extern.h" 45 46 #define READ_CHUNK 0x10000 47 48 int 49 flash_strategy(void *devdata, int rw, daddr_t blk, 50 size_t size, void *buf , size_t *rsize) 51 { 52 u_int8_t *src; 53 size_t count; 54 55 if (rw != F_READ) 56 return EIO; 57 58 src = (u_int8_t *) KERN_ROMBASE + dbtob(blk); 59 count = size < READ_CHUNK ? size : READ_CHUNK; 60 bcopy(src, buf, count); 61 *rsize = count; 62 return 0; 63 } 64 65 int 66 flash_open(struct open_file *f, ...) 67 { 68 return 0; 69 } 70 71 int 72 flash_close(struct open_file *f) 73 { 74 return 0; 75 } 76 77 int 78 flash_ioctl(struct open_file *f, u_long cmd, void *data) 79 { 80 return EIO; 81 } 82