diff options
Diffstat (limited to 'drivers/mtd/maps/sharpsl-flash.c')
-rw-r--r-- | drivers/mtd/maps/sharpsl-flash.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/mtd/maps/sharpsl-flash.c b/drivers/mtd/maps/sharpsl-flash.c new file mode 100644 index 0000000..b3b39cb --- /dev/null +++ b/drivers/mtd/maps/sharpsl-flash.c @@ -0,0 +1,101 @@ +/* + * sharpsl-flash.c + * + * Copyright (C) 2001 Lineo Japan, Inc. + * Copyright (C) 2002 SHARP + * + * $Id: sharpsl-flash.c,v 1.2 2004/11/24 20:38:06 rpurdie Exp $ + * + * based on rpxlite.c,v 1.15 2001/10/02 15:05:14 dwmw2 Exp + * Handle mapping of the flash on the RPX Lite and CLLF boards + * + * 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. + * + */ + +#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 0x00000000 +#define WINDOW_SIZE 0x01000000 +#define BANK_WIDTH 2 + +static struct mtd_info *mymtd; + +struct map_info sharpsl_map = { + .name = "sharpsl-flash", + .size = WINDOW_SIZE, + .bankwidth = BANK_WIDTH, + .phys = WINDOW_ADDR +}; + +static struct mtd_partition sharpsl_partitions[1] = { + { + name: "Filesystem", + size: 0x006d0000, + offset: 0x00120000 + } +}; + +#define NB_OF(x) (sizeof(x)/sizeof(x[0])) + +int __init init_sharpsl(void) +{ + struct mtd_partition *parts; + int nb_parts = 0; + char *part_type = "static"; + + printk(KERN_NOTICE "Sharp SL series flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR); + sharpsl_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); + if (!sharpsl_map.virt) { + printk("Failed to ioremap\n"); + return -EIO; + } + mymtd = do_map_probe("map_rom", &sharpsl_map); + if (!mymtd) { + iounmap(sharpsl_map.virt); + return -ENXIO; + } + + mymtd->owner = THIS_MODULE; + + parts = sharpsl_partitions; + nb_parts = NB_OF(sharpsl_partitions); + + printk(KERN_NOTICE "Using %s partision definition\n", part_type); + add_mtd_partitions(mymtd, parts, nb_parts); + + return 0; +} + +static void __exit cleanup_sharpsl(void) +{ + if (mymtd) { + del_mtd_partitions(mymtd); + map_destroy(mymtd); + } + if (sharpsl_map.virt) { + iounmap(sharpsl_map.virt); + sharpsl_map.virt = 0; + } +} + +module_init(init_sharpsl); +module_exit(cleanup_sharpsl); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("SHARP (Original: Arnold Christensen <AKC@pel.dk>)"); +MODULE_DESCRIPTION("MTD map driver for SHARP SL series"); |