nand_util.c

/*
 * drivers/mtd/nand/nand_util.c
 *
 * Copyright (C) 2006 by Weiss-Electronic GmbH.
 * All rights reserved.
 *
 * @author:	Guido Classen <clagix@gmail.com>
 * @descr:	NAND Flash support
 * @references: borrowed heavily from Linux mtd-utils code:
 *		flash_eraseall.c by Arcom Control System Ltd
 *		nandwrite.c by Steven J. Hill (sjhill@realitydiluted.com)
 *			       and Thomas Gleixner (tglx@linutronix.de)
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

#include <common.h>

#if defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY)

#include <command.h>
#include <watchdog.h>
#include <malloc.h>
#include <div64.h>

#include <nand.h>
#include <jffs2/jffs2.h>

typedef struct erase_info erase_info_t;
typedef struct mtd_info	  mtd_info_t;

/* support only for native endian JFFS2 */
#define cpu_to_je16(x) (x)
#define cpu_to_je32(x) (x)

/*****************************************************************************/
static int nand_block_bad_scrub(struct mtd_info *mtd, loff_t ofs, int getchip)
{
	return 0;
}

/**
 * nand_erase_opts: - erase NAND flash with support for various options
 *		      (jffs2 formating)
 *
 * @param meminfo	NAND device to erase
 * @param opts		options,  @see struct nand_erase_options
 * @return		0 in case of success
 *
 * This code is ported from flash_eraseall.c from Linux mtd utils by
 * Arcom Control System Ltd.
 */
int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts)
{