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[linux-2.6.git] / drivers / mtd / maps / mpc1211.c
1 /*
2  * Flash on MPC-1211
3  *
4  * $Id: mpc1211.c,v 1.3 2004/07/14 17:45:40 dwmw2 Exp $
5  *
6  * (C) 2002 Interface, Saito.K & Jeanne
7  *
8  * GPL'd
9  */
10
11 #include <linux/module.h>
12 #include <linux/types.h>
13 #include <linux/kernel.h>
14 #include <asm/io.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/mtd/map.h>
17 #include <linux/mtd/partitions.h>
18 #include <linux/config.h>
19
20 static struct mtd_info *flash_mtd;
21 static struct mtd_partition *parsed_parts;
22
23 struct map_info mpc1211_flash_map = {
24         .name           = "MPC-1211 FLASH",
25         .size           = 0x80000,
26         .bankwidth      = 1,
27 };
28
29 static struct mtd_partition mpc1211_partitions[] = {
30         {
31                 .name   = "IPL & ETH-BOOT",
32                 .offset = 0x00000000,
33                 .size   = 0x10000,
34         },
35         {
36                 .name   = "Flash FS",
37                 .offset = 0x00010000,
38                 .size   = MTDPART_SIZ_FULL,
39         }
40 };
41
42 static int __init init_mpc1211_maps(void)
43 {
44         int nr_parts;
45
46         mpc1211_flash_map.phys = 0;
47         mpc1211_flash_map.virt = P2SEGADDR(0);
48
49         simple_map_init(&mpc1211_flash_map);
50
51         printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
52         flash_mtd = do_map_probe("jedec_probe", &mpc1211_flash_map);
53         if (!flash_mtd) {
54                 printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
55                 return -ENXIO;
56         }
57         printk(KERN_NOTICE "MPC-1211: Flash at 0x%08lx\n", mpc1211_flash_map.virt & 0x1fffffff);
58         flash_mtd->module = THIS_MODULE;
59
60         parsed_parts = mpc1211_partitions;
61         nr_parts = ARRAY_SIZE(mpc1211_partitions);
62
63         add_mtd_partitions(flash_mtd, parsed_parts, nr_parts);
64         return 0;
65 }
66
67 static void __exit cleanup_mpc1211_maps(void)
68 {
69         if (parsed_parts)
70                 del_mtd_partitions(flash_mtd);
71         else
72                 del_mtd_device(flash_mtd);
73         map_destroy(flash_mtd);
74 }
75
76 module_init(init_mpc1211_maps);
77 module_exit(cleanup_mpc1211_maps);
78
79 MODULE_LICENSE("GPL");
80 MODULE_AUTHOR("Saito.K & Jeanne <ksaito@interface.co.jp>");
81 MODULE_DESCRIPTION("MTD map driver for MPC-1211 boards. Interface");