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1da177e4 LT |
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 | #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 = (void __iomem *)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"); |