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Commit | Line | Data |
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1da177e4 | 1 | /* |
69f34c98 | 2 | * Flash memory access on Hynix GMS30C7201/HMS30C7202 based |
1da177e4 | 3 | * evaluation boards |
69f34c98 | 4 | * |
1da177e4 | 5 | * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com> |
69f34c98 | 6 | * 2003 Thomas Gleixner <tglx@linutronix.de> |
1da177e4 LT |
7 | */ |
8 | ||
1da177e4 LT |
9 | #include <linux/module.h> |
10 | #include <linux/types.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/errno.h> | |
14 | #include <linux/slab.h> | |
15 | ||
16 | #include <linux/mtd/mtd.h> | |
17 | #include <linux/mtd/map.h> | |
18 | #include <linux/mtd/partitions.h> | |
a09e64fb | 19 | #include <mach/hardware.h> |
1da177e4 LT |
20 | #include <asm/io.h> |
21 | ||
22 | static struct mtd_info *mymtd; | |
23 | ||
24 | static struct map_info h720x_map = { | |
25 | .name = "H720X", | |
26 | .bankwidth = 4, | |
d9a682a5 RK |
27 | .size = H720X_FLASH_SIZE, |
28 | .phys = H720X_FLASH_PHYS, | |
1da177e4 LT |
29 | }; |
30 | ||
31 | static struct mtd_partition h720x_partitions[] = { | |
32 | { | |
33 | .name = "ArMon", | |
34 | .size = 0x00080000, | |
35 | .offset = 0, | |
36 | .mask_flags = MTD_WRITEABLE | |
37 | },{ | |
38 | .name = "Env", | |
39 | .size = 0x00040000, | |
40 | .offset = 0x00080000, | |
41 | .mask_flags = MTD_WRITEABLE | |
42 | },{ | |
43 | .name = "Kernel", | |
44 | .size = 0x00180000, | |
45 | .offset = 0x000c0000, | |
46 | .mask_flags = MTD_WRITEABLE | |
47 | },{ | |
48 | .name = "Ramdisk", | |
49 | .size = 0x00400000, | |
50 | .offset = 0x00240000, | |
51 | .mask_flags = MTD_WRITEABLE | |
52 | },{ | |
53 | .name = "jffs2", | |
54 | .size = MTDPART_SIZ_FULL, | |
55 | .offset = MTDPART_OFS_APPEND | |
56 | } | |
57 | }; | |
58 | ||
87d10f3c | 59 | #define NUM_PARTITIONS ARRAY_SIZE(h720x_partitions) |
1da177e4 | 60 | |
1da177e4 LT |
61 | /* |
62 | * Initialize FLASH support | |
63 | */ | |
2257594f | 64 | static int __init h720x_mtd_init(void) |
1da177e4 | 65 | { |
d9a682a5 | 66 | h720x_map.virt = ioremap(h720x_map.phys, h720x_map.size); |
1da177e4 LT |
67 | |
68 | if (!h720x_map.virt) { | |
69 | printk(KERN_ERR "H720x-MTD: ioremap failed\n"); | |
70 | return -EIO; | |
71 | } | |
72 | ||
73 | simple_map_init(&h720x_map); | |
74 | ||
75 | // Probe for flash bankwidth 4 | |
76 | printk (KERN_INFO "H720x-MTD probing 32bit FLASH\n"); | |
77 | mymtd = do_map_probe("cfi_probe", &h720x_map); | |
78 | if (!mymtd) { | |
79 | printk (KERN_INFO "H720x-MTD probing 16bit FLASH\n"); | |
80 | // Probe for bankwidth 2 | |
81 | h720x_map.bankwidth = 2; | |
82 | mymtd = do_map_probe("cfi_probe", &h720x_map); | |
83 | } | |
69f34c98 | 84 | |
1da177e4 LT |
85 | if (mymtd) { |
86 | mymtd->owner = THIS_MODULE; | |
87 | ||
8db2a08e DES |
88 | mtd_device_parse_register(mymtd, NULL, 0, |
89 | h720x_partitions, NUM_PARTITIONS); | |
1da177e4 LT |
90 | return 0; |
91 | } | |
92 | ||
93 | iounmap((void *)h720x_map.virt); | |
94 | return -ENXIO; | |
95 | } | |
96 | ||
97 | /* | |
98 | * Cleanup | |
99 | */ | |
100 | static void __exit h720x_mtd_cleanup(void) | |
101 | { | |
102 | ||
103 | if (mymtd) { | |
360e40ae | 104 | mtd_device_unregister(mymtd); |
1da177e4 LT |
105 | map_destroy(mymtd); |
106 | } | |
69f34c98 | 107 | |
1da177e4 LT |
108 | if (h720x_map.virt) { |
109 | iounmap((void *)h720x_map.virt); | |
110 | h720x_map.virt = 0; | |
111 | } | |
112 | } | |
113 | ||
114 | ||
115 | module_init(h720x_mtd_init); | |
116 | module_exit(h720x_mtd_cleanup); | |
117 | ||
118 | MODULE_LICENSE("GPL"); | |
119 | MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>"); | |
120 | MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards"); |