/* * $Id: mbx860.c,v 1.9 2005/11/07 11:14:27 gleixner Exp $ * * Handle mapping of the flash on MBX860 boards * * Author: Anton Todorov * Copyright: (C) 2001 Emness Technology * * 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 <linux/init.h> #include <asm/io.h> #include <linux/mtd/mtd.h> #include <linux/mtd/map.h> #include <linux/mtd/partitions.h> #define WINDOW_ADDR 0xfe000000 #define WINDOW_SIZE 0x00200000 /* Flash / Partition sizing */ #define MAX_SIZE_KiB 8192 #define BOOT_PARTITION_SIZE_KiB 512 #define KERNEL_PARTITION_SIZE_KiB 5632 #define APP_PARTITION_SIZE_KiB 2048 #define NUM_PARTITIONS 3 /* partition_info gives details on the logical partitions that the split the * single flash device into. If the size if zero we use up to the end of the * device. */ static struct mtd_partition partition_info[]={ { .name = "MBX flash BOOT partition", .offset = 0, .size = BOOT_PARTITION_SIZE_KiB*1024 }, { .name = "MBX flash DATA partition", .offset = BOOT_PARTITION_SIZE_KiB*1024, .size = (KERNEL_PARTITION_SIZE_KiB)*1024 }, { .name = "MBX flash APPLICATION partition", .offset = (BOOT_PARTITION_SIZE_KiB+KERNEL_PARTITION_SIZE_KiB)*1024 } }; static struct mtd_info *mymtd; struct map_info mbx_map = { .name = "MBX flash", .size = WINDOW_SIZE, .phys = WINDOW_ADDR, .bankwidth = 4, }; int __init init_mbx(void) { printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR); mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4); if (!mbx_map.virt) { printk("Failed to ioremap\n"); return -EIO; } simple_map_init(&mbx_map); mymtd = do_map_probe("jedec_probe", &mbx_map); if (mymtd) { mymtd->owner = THIS_MODULE; add_mtd_device(mymtd); add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS); return 0; } iounmap((void *)mbx_map.virt); return -ENXIO; } static void __exit cleanup_mbx(void) { if (mymtd) { del_mtd_device(mymtd); map_destroy(mymtd); } if (mbx_map.virt) { iounmap((void *)mbx_map.virt); mbx_map.virt = 0; } } module_init(init_mbx); module_exit(cleanup_mbx); MODULE_AUTHOR("Anton Todorov <a.todorov@emness.com>"); MODULE_DESCRIPTION("MTD map driver for Motorola MBX860 board"); MODULE_LICENSE("GPL");