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/*

 * $Id: iq80310.c,v 1.1.1.1 2004-04-15 01:51:48 phoenix Exp $

 *

 * Mapping for the Intel XScale IQ80310 evaluation board

 *

 * Author:      Nicolas Pitre

 * Copyright:   (C) 2001 MontaVista Software Inc.

 *

 * 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.

 */

#include <linux/module.h>

#include <linux/types.h>

#include <linux/kernel.h>

#include <asm/io.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/map.h>

#include <linux/mtd/partitions.h>

#define WINDOW_ADDR     0

#define WINDOW_SIZE     8*1024*1024

#define BUSWIDTH        1

static struct mtd_info *mymtd;

static __u8 iq80310_read8(struct map_info *map, unsigned long ofs)

{

        return *(__u8 *)(map->map_priv_1 + ofs);

}

static __u16 iq80310_read16(struct map_info *map, unsigned long ofs)

{

        return *(__u16 *)(map->map_priv_1 + ofs);

}

static __u32 iq80310_read32(struct map_info *map, unsigned long ofs)

{

        return *(__u32 *)(map->map_priv_1 + ofs);

}

static void iq80310_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)

{

        memcpy(to, (void *)(map->map_priv_1 + from), len);

}

static void iq80310_write8(struct map_info *map, __u8 d, unsigned long adr)

{

        *(__u8 *)(map->map_priv_1 + adr) = d;

}

static void iq80310_write16(struct map_info *map, __u16 d, unsigned long adr)

{

        *(__u16 *)(map->map_priv_1 + adr) = d;

}

static void iq80310_write32(struct map_info *map, __u32 d, unsigned long adr)

{

        *(__u32 *)(map->map_priv_1 + adr) = d;

}

static void iq80310_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)

{

        memcpy((void *)(map->map_priv_1 + to), from, len);

}

static struct map_info iq80310_map = {

        name: "IQ80310 flash",

        size: WINDOW_SIZE,

        buswidth: BUSWIDTH,

        read8:          iq80310_read8,

        read16:         iq80310_read16,

        read32:         iq80310_read32,

        copy_from:      iq80310_copy_from,

        write8:         iq80310_write8,

        write16:        iq80310_write16,

        write32:        iq80310_write32,

        copy_to:        iq80310_copy_to

};

static struct mtd_partition iq80310_partitions[4] = {

        {

                name:           "Firmware",

                size:           0x00080000,

                offset:         0,

                mask_flags:     MTD_WRITEABLE  /* force read-only */

        },{

                name:           "Kernel",

                size:           0x000a0000,

                offset:         0x00080000,

        },{

                name:           "Filesystem",

                size:           0x00600000,

                offset:         0x00120000

        },{

                name:           "RedBoot",

                size:           0x000e0000,

                offset:         0x00720000,

                mask_flags:     MTD_WRITEABLE

        }

};

#define NB_OF(x)  (sizeof(x)/sizeof(x[0]))

static struct mtd_info *mymtd;

static struct mtd_partition *parsed_parts;

extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);

static int __init init_iq80310(void)

{

        struct mtd_partition *parts;

        int nb_parts = 0;

        int parsed_nr_parts = 0;

        char *part_type = "static";

        iq80310_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);

        if (!iq80310_map.map_priv_1) {

                printk("Failed to ioremap\n");

                return -EIO;

        }

        mymtd = do_map_probe("cfi_probe", &iq80310_map);

        if (!mymtd) {

                iounmap((void *)iq80310_map.map_priv_1);

                return -ENXIO;

        }

        mymtd->module = THIS_MODULE;

#ifdef CONFIG_MTD_REDBOOT_PARTS

        if (parsed_nr_parts == 0) {

                int ret = parse_redboot_partitions(mymtd, &parsed_parts);

                if (ret > 0) {

                        part_type = "RedBoot";

                        parsed_nr_parts = ret;

                }

        }

#endif

        if (parsed_nr_parts > 0) {

                parts = parsed_parts;

                nb_parts = parsed_nr_parts;

        } else {

                parts = iq80310_partitions;

                nb_parts = NB_OF(iq80310_partitions);

        }

        printk(KERN_NOTICE "Using %s partition definition\n", part_type);

        add_mtd_partitions(mymtd, parts, nb_parts);

        return 0;

}

static void __exit cleanup_iq80310(void)

{

        if (mymtd) {

                del_mtd_partitions(mymtd);

                map_destroy(mymtd);

                if (parsed_parts)

                        kfree(parsed_parts);

        }

        if (iq80310_map.map_priv_1)

                iounmap((void *)iq80310_map.map_priv_1);

}

module_init(init_iq80310);

module_exit(cleanup_iq80310);

MODULE_LICENSE("GPL");

MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");

MODULE_DESCRIPTION("MTD map driver for Intel XScale IQ80310 evaluation board");