1 /*
2 * Flash on MPC-1211
3 *
4 * $Id: mpc1211.c,v 1.4 2004/09/16 23:27:13 gleixner 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
19 static struct mtd_info *flash_mtd;
20 static struct mtd_partition *parsed_parts;
21
22 struct map_info mpc1211_flash_map = {
23 .name = "MPC-1211 FLASH",
24 .size = 0x80000,
25 .bankwidth = 1,
26 };
27
28 static struct mtd_partition mpc1211_partitions[] = {
29 {
30 .name = "IPL & ETH-BOOT",
31 .offset = 0x00000000,
32 .size = 0x10000,
33 },
34 {
35 .name = "Flash FS",
36 .offset = 0x00010000,
37 .size = MTDPART_SIZ_FULL,
38 }
39 };
40
41 static int __init init_mpc1211_maps(void)
42 {
43 int nr_parts;
44
45 mpc1211_flash_map.phys = 0;
46 mpc1211_flash_map.virt = (void __iomem *)P2SEGADDR(0);
47
48 simple_map_init(&mpc1211_flash_map);
49
50 printk(KERN_NOTICE "Probing for flash chips at 0x00000000:\n");
51 flash_mtd = do_map_probe("jedec_probe", &mpc1211_flash_map);
52 if (!flash_mtd) {
53 printk(KERN_NOTICE "Flash chips not detected at either possible location.\n");
54 return -ENXIO;
55 }
56 printk(KERN_NOTICE "MPC-1211: Flash at 0x%08lx\n", mpc1211_flash_map.virt & 0x1fffffff);
57 flash_mtd->module = THIS_MODULE;
58
59 parsed_parts = mpc1211_partitions;
60 nr_parts = ARRAY_SIZE(mpc1211_partitions);
61
62 add_mtd_partitions(flash_mtd, parsed_parts, nr_parts);
63 return 0;
64 }
65
66 static void __exit cleanup_mpc1211_maps(void)
67 {
68 if (parsed_parts)
69 del_mtd_partitions(flash_mtd);
70 else
71 del_mtd_device(flash_mtd);
72 map_destroy(flash_mtd);
73 }
74
75 module_init(init_mpc1211_maps);
76 module_exit(cleanup_mpc1211_maps);
77
78 MODULE_LICENSE("GPL");
79 MODULE_AUTHOR("Saito.K & Jeanne <ksaito@interface.co.jp>");
80 MODULE_DESCRIPTION("MTD map driver for MPC-1211 boards. Interface");
81
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