linux-imx

/*

 * Copyright © 2007 Eugene Konev <ejka@openwrt.org>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *

 * TI AR7 flash partition table.

 * Based on ar7 map by Felix Fietkau <nbd@openwrt.org>

 *

 */

​

#include <linux/kernel.h>

#include <linux/slab.h>

​

#include <linux/mtd/mtd.h>

#include <linux/mtd/partitions.h>

#include <linux/memblock.h>

#include <linux/module.h>

​

#include <uapi/linux/magic.h>

​

#define AR7_PARTS   4

#define ROOT_OFFSET 0xe0000

​

#define LOADER_MAGIC1   le32_to_cpu(0xfeedfa42)

#define LOADER_MAGIC2   le32_to_cpu(0xfeed1281)

​

struct ar7_bin_rec {

    unsigned int checksum;

    unsigned int length;

    unsigned int address;

};

​

static int create_mtd_partitions(struct mtd_info *master,

                 const struct mtd_partition **pparts,

                 struct mtd_part_parser_data *data)

{

    struct ar7_bin_rec header;

    unsigned int offset;

    size_t len;

    unsigned int pre_size = master->erasesize, post_size = 0;

    unsigned int root_offset = ROOT_OFFSET;

​

    int retries = 10;

    struct mtd_partition *ar7_parts;

​

    ar7_parts = kcalloc(AR7_PARTS, sizeof(*ar7_parts), GFP_KERNEL);

    if (!ar7_parts)

        return -ENOMEM;

    ar7_parts[0].name = "loader";

    ar7_parts[0].offset = 0;

    ar7_parts[0].size = master->erasesize;