linux-imx

/*

 * Flash and EPROM on Hitachi Solution Engine and similar boards.

 *

 * (C) 2001 Red Hat, Inc.

 *

 * GPL'd

 */

​

#include <linux/module.h>

#include <linux/types.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <asm/io.h>

#include <linux/mtd/mtd.h>

#include <linux/mtd/map.h>

#include <linux/mtd/partitions.h>

#include <linux/errno.h>

​

static struct mtd_info *flash_mtd;

static struct mtd_info *eprom_mtd;

​

struct map_info soleng_eprom_map = {

    .name = "Solution Engine EPROM",

    .size = 0x400000,

    .bankwidth = 4,

};

​

struct map_info soleng_flash_map = {

    .name = "Solution Engine FLASH",

    .size = 0x400000,

    .bankwidth = 4,

};

​

static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };

​

static int __init init_soleng_maps(void)

{

    /* First probe at offset 0 */

    soleng_flash_map.phys = 0;

    soleng_flash_map.virt = (void __iomem *)P2SEGADDR(0);

    soleng_eprom_map.phys = 0x01000000;

    soleng_eprom_map.virt = (void __iomem *)P1SEGADDR(0x01000000);

    simple_map_init(&soleng_eprom_map);

    simple_map_init(&soleng_flash_map);

​

    printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");

    flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);

    if (!flash_mtd) {

        /* Not there. Try swapping */

        printk(KERN_NOTICE "Probing for flash chips at 0x01000000:\n");

        soleng_flash_map.phys = 0x01000000;

        soleng_flash_map.virt = P2SEGADDR(0x01000000);

        soleng_eprom_map.phys = 0;

        soleng_eprom_map.virt = P1SEGADDR(0);

        flash_mtd = do_map_probe("cfi_probe", &soleng_flash_map);

        if (!flash_mtd) {

            /* Eep. */

            printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");

            return -ENXIO;

        }

    }

    printk(KERN_NOTICE "Solution Engine: Flash at 0x%pap, EPROM at 0x%pap\n",

           &soleng_flash_map.phys,