Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * D-Box 2 flash driver |
3 | */ | |
4 | ||
5 | #include <linux/module.h> | |
6 | #include <linux/types.h> | |
7 | #include <linux/kernel.h> | |
8 | #include <linux/init.h> | |
9 | #include <asm/io.h> | |
10 | #include <linux/mtd/mtd.h> | |
11 | #include <linux/mtd/map.h> | |
12 | #include <linux/mtd/partitions.h> | |
1da177e4 LT |
13 | #include <linux/errno.h> |
14 | ||
15 | /* partition_info gives details on the logical partitions that the split the | |
16 | * single flash device into. If the size if zero we use up to the end of the | |
17 | * device. */ | |
18 | static struct mtd_partition partition_info[]= { | |
19 | { | |
20 | .name = "BR bootloader", | |
69f34c98 TG |
21 | .size = 128 * 1024, |
22 | .offset = 0, | |
1da177e4 LT |
23 | .mask_flags = MTD_WRITEABLE |
24 | }, | |
25 | { | |
26 | .name = "FLFS (U-Boot)", | |
69f34c98 TG |
27 | .size = 128 * 1024, |
28 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
29 | .mask_flags = 0 |
30 | }, | |
31 | { | |
69f34c98 TG |
32 | .name = "Root (SquashFS)", |
33 | .size = 7040 * 1024, | |
34 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
35 | .mask_flags = 0 |
36 | }, | |
37 | { | |
38 | .name = "var (JFFS2)", | |
69f34c98 TG |
39 | .size = 896 * 1024, |
40 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
41 | .mask_flags = 0 |
42 | }, | |
43 | { | |
69f34c98 TG |
44 | .name = "Flash without bootloader", |
45 | .size = MTDPART_SIZ_FULL, | |
46 | .offset = 128 * 1024, | |
1da177e4 LT |
47 | .mask_flags = 0 |
48 | }, | |
49 | { | |
69f34c98 TG |
50 | .name = "Complete Flash", |
51 | .size = MTDPART_SIZ_FULL, | |
52 | .offset = 0, | |
1da177e4 LT |
53 | .mask_flags = MTD_WRITEABLE |
54 | } | |
55 | }; | |
56 | ||
87d10f3c | 57 | #define NUM_PARTITIONS ARRAY_SIZE(partition_info) |
1da177e4 LT |
58 | |
59 | #define WINDOW_ADDR 0x10000000 | |
60 | #define WINDOW_SIZE 0x800000 | |
61 | ||
62 | static struct mtd_info *mymtd; | |
63 | ||
64 | ||
65 | struct map_info dbox2_flash_map = { | |
66 | .name = "D-Box 2 flash memory", | |
67 | .size = WINDOW_SIZE, | |
68 | .bankwidth = 4, | |
69 | .phys = WINDOW_ADDR, | |
70 | }; | |
71 | ||
baa0f0fc | 72 | static int __init init_dbox2_flash(void) |
1da177e4 LT |
73 | { |
74 | printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR); | |
75 | dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); | |
76 | ||
77 | if (!dbox2_flash_map.virt) { | |
78 | printk("Failed to ioremap\n"); | |
79 | return -EIO; | |
80 | } | |
81 | simple_map_init(&dbox2_flash_map); | |
82 | ||
83 | // Probe for dual Intel 28F320 or dual AMD | |
84 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); | |
85 | if (!mymtd) { | |
86 | // Probe for single Intel 28F640 | |
87 | dbox2_flash_map.bankwidth = 2; | |
69f34c98 | 88 | |
1da177e4 LT |
89 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); |
90 | } | |
69f34c98 | 91 | |
1da177e4 LT |
92 | if (mymtd) { |
93 | mymtd->owner = THIS_MODULE; | |
94 | ||
95 | /* Create MTD devices for each partition. */ | |
ee0e87b1 | 96 | mtd_device_register(mymtd, partition_info, NUM_PARTITIONS); |
69f34c98 | 97 | |
1da177e4 LT |
98 | return 0; |
99 | } | |
100 | ||
101 | iounmap((void *)dbox2_flash_map.virt); | |
102 | return -ENXIO; | |
103 | } | |
104 | ||
105 | static void __exit cleanup_dbox2_flash(void) | |
106 | { | |
107 | if (mymtd) { | |
ee0e87b1 | 108 | mtd_device_unregister(mymtd); |
1da177e4 LT |
109 | map_destroy(mymtd); |
110 | } | |
111 | if (dbox2_flash_map.virt) { | |
112 | iounmap((void *)dbox2_flash_map.virt); | |
113 | dbox2_flash_map.virt = 0; | |
114 | } | |
115 | } | |
116 | ||
117 | module_init(init_dbox2_flash); | |
118 | module_exit(cleanup_dbox2_flash); | |
119 | ||
120 | ||
121 | MODULE_LICENSE("GPL"); | |
151e7659 | 122 | MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>"); |
1da177e4 | 123 | MODULE_DESCRIPTION("MTD map driver for D-Box 2 board"); |