/* $NetBSD: dev_flash.c,v 1.6 2011/07/17 20:54:41 joerg Exp $ */

/*
* Copyright (c) 2003 Naoto Shimazaki.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NAOTO SHIMAZAKI AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE NAOTO OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: dev_flash.c,v 1.6 2011/07/17 20:54:41 joerg Exp $");

#include <sys/param.h>
#include <lib/libsa/stand.h>

#include "extern.h"

#define READ_CHUNK      0x10000

int
flash_strategy(void *devdata, int rw, daddr_t blk,
              size_t size, void *buf , size_t *rsize)
{
       u_int8_t        *src;
       size_t          count;

       if (rw != F_READ)
               return EIO;

       src = (u_int8_t *) KERN_ROMBASE + dbtob(blk);
       count = size < READ_CHUNK ? size : READ_CHUNK;
       memcpy(buf, src, count);
       *rsize = count;
       return 0;
}

int
flash_open(struct open_file *f, ...)
{
       char    *fname;
       char    **file;
       va_list ap;

       va_start(ap, f);
       fname = va_arg(ap, char *);
       file = va_arg(ap, char **);
       va_end(ap);

       *file = NULL;

       return 0;
}

int
flash_close(struct open_file *f)
{
       return 0;
}

int
flash_ioctl(struct open_file *f, u_long cmd, void *data)
{
       return EIO;
}