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