2 * Handle mapping of the flash on MBX860 boards
4 * Author: Anton Todorov
5 * Copyright: (C) 2001 Emness Technology
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
13 #include <linux/module.h>
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
18 #include <linux/mtd/mtd.h>
19 #include <linux/mtd/map.h>
20 #include <linux/mtd/partitions.h>
23 #define WINDOW_ADDR 0xfe000000
24 #define WINDOW_SIZE 0x00200000
26 /* Flash / Partition sizing */
27 #define MAX_SIZE_KiB 8192
28 #define BOOT_PARTITION_SIZE_KiB 512
29 #define KERNEL_PARTITION_SIZE_KiB 5632
30 #define APP_PARTITION_SIZE_KiB 2048
32 #define NUM_PARTITIONS 3
34 /* partition_info gives details on the logical partitions that the split the
35 * single flash device into. If the size if zero we use up to the end of the
37 static struct mtd_partition partition_info[]={
38 { .name = "MBX flash BOOT partition",
40 .size = BOOT_PARTITION_SIZE_KiB*1024 },
41 { .name = "MBX flash DATA partition",
42 .offset = BOOT_PARTITION_SIZE_KiB*1024,
43 .size = (KERNEL_PARTITION_SIZE_KiB)*1024 },
44 { .name = "MBX flash APPLICATION partition",
45 .offset = (BOOT_PARTITION_SIZE_KiB+KERNEL_PARTITION_SIZE_KiB)*1024 }
49 static struct mtd_info *mymtd;
51 struct map_info mbx_map = {
58 static int __init init_mbx(void)
60 printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR);
61 mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
64 printk("Failed to ioremap\n");
67 simple_map_init(&mbx_map);
69 mymtd = do_map_probe("jedec_probe", &mbx_map);
71 mymtd->owner = THIS_MODULE;
72 add_mtd_device(mymtd);
73 add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
77 iounmap((void *)mbx_map.virt);
81 static void __exit cleanup_mbx(void)
84 del_mtd_device(mymtd);
88 iounmap((void *)mbx_map.virt);
93 module_init(init_mbx);
94 module_exit(cleanup_mbx);
96 MODULE_AUTHOR("Anton Todorov <a.todorov@emness.com>");
97 MODULE_DESCRIPTION("MTD map driver for Motorola MBX860 board");
98 MODULE_LICENSE("GPL");