Commit | Line | Data |
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1da177e4 | 1 | /* |
69f34c98 | 2 | * $Id: dbox2-flash.c,v 1.14 2005/11/07 11:14:26 gleixner Exp $ |
1da177e4 LT |
3 | * |
4 | * D-Box 2 flash driver | |
5 | */ | |
6 | ||
7 | #include <linux/module.h> | |
8 | #include <linux/types.h> | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/init.h> | |
11 | #include <asm/io.h> | |
12 | #include <linux/mtd/mtd.h> | |
13 | #include <linux/mtd/map.h> | |
14 | #include <linux/mtd/partitions.h> | |
15 | #include <linux/config.h> | |
16 | #include <linux/errno.h> | |
17 | ||
18 | /* partition_info gives details on the logical partitions that the split the | |
19 | * single flash device into. If the size if zero we use up to the end of the | |
20 | * device. */ | |
21 | static struct mtd_partition partition_info[]= { | |
22 | { | |
23 | .name = "BR bootloader", | |
69f34c98 TG |
24 | .size = 128 * 1024, |
25 | .offset = 0, | |
1da177e4 LT |
26 | .mask_flags = MTD_WRITEABLE |
27 | }, | |
28 | { | |
29 | .name = "FLFS (U-Boot)", | |
69f34c98 TG |
30 | .size = 128 * 1024, |
31 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
32 | .mask_flags = 0 |
33 | }, | |
34 | { | |
69f34c98 TG |
35 | .name = "Root (SquashFS)", |
36 | .size = 7040 * 1024, | |
37 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
38 | .mask_flags = 0 |
39 | }, | |
40 | { | |
41 | .name = "var (JFFS2)", | |
69f34c98 TG |
42 | .size = 896 * 1024, |
43 | .offset = MTDPART_OFS_APPEND, | |
1da177e4 LT |
44 | .mask_flags = 0 |
45 | }, | |
46 | { | |
69f34c98 TG |
47 | .name = "Flash without bootloader", |
48 | .size = MTDPART_SIZ_FULL, | |
49 | .offset = 128 * 1024, | |
1da177e4 LT |
50 | .mask_flags = 0 |
51 | }, | |
52 | { | |
69f34c98 TG |
53 | .name = "Complete Flash", |
54 | .size = MTDPART_SIZ_FULL, | |
55 | .offset = 0, | |
1da177e4 LT |
56 | .mask_flags = MTD_WRITEABLE |
57 | } | |
58 | }; | |
59 | ||
60 | #define NUM_PARTITIONS (sizeof(partition_info) / sizeof(partition_info[0])) | |
61 | ||
62 | #define WINDOW_ADDR 0x10000000 | |
63 | #define WINDOW_SIZE 0x800000 | |
64 | ||
65 | static struct mtd_info *mymtd; | |
66 | ||
67 | ||
68 | struct map_info dbox2_flash_map = { | |
69 | .name = "D-Box 2 flash memory", | |
70 | .size = WINDOW_SIZE, | |
71 | .bankwidth = 4, | |
72 | .phys = WINDOW_ADDR, | |
73 | }; | |
74 | ||
75 | int __init init_dbox2_flash(void) | |
76 | { | |
77 | printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR); | |
78 | dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); | |
79 | ||
80 | if (!dbox2_flash_map.virt) { | |
81 | printk("Failed to ioremap\n"); | |
82 | return -EIO; | |
83 | } | |
84 | simple_map_init(&dbox2_flash_map); | |
85 | ||
86 | // Probe for dual Intel 28F320 or dual AMD | |
87 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); | |
88 | if (!mymtd) { | |
89 | // Probe for single Intel 28F640 | |
90 | dbox2_flash_map.bankwidth = 2; | |
69f34c98 | 91 | |
1da177e4 LT |
92 | mymtd = do_map_probe("cfi_probe", &dbox2_flash_map); |
93 | } | |
69f34c98 | 94 | |
1da177e4 LT |
95 | if (mymtd) { |
96 | mymtd->owner = THIS_MODULE; | |
97 | ||
98 | /* Create MTD devices for each partition. */ | |
99 | add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS); | |
69f34c98 | 100 | |
1da177e4 LT |
101 | return 0; |
102 | } | |
103 | ||
104 | iounmap((void *)dbox2_flash_map.virt); | |
105 | return -ENXIO; | |
106 | } | |
107 | ||
108 | static void __exit cleanup_dbox2_flash(void) | |
109 | { | |
110 | if (mymtd) { | |
111 | del_mtd_partitions(mymtd); | |
112 | map_destroy(mymtd); | |
113 | } | |
114 | if (dbox2_flash_map.virt) { | |
115 | iounmap((void *)dbox2_flash_map.virt); | |
116 | dbox2_flash_map.virt = 0; | |
117 | } | |
118 | } | |
119 | ||
120 | module_init(init_dbox2_flash); | |
121 | module_exit(cleanup_dbox2_flash); | |
122 | ||
123 | ||
124 | MODULE_LICENSE("GPL"); |