diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/mtd/maps/h720x-flash.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/mtd/maps/h720x-flash.c')
-rw-r--r-- | drivers/mtd/maps/h720x-flash.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/mtd/maps/h720x-flash.c b/drivers/mtd/maps/h720x-flash.c new file mode 100644 index 000000000000..c73828171d9b --- /dev/null +++ b/drivers/mtd/maps/h720x-flash.c | |||
@@ -0,0 +1,144 @@ | |||
1 | /* | ||
2 | * Flash memory access on Hynix GMS30C7201/HMS30C7202 based | ||
3 | * evaluation boards | ||
4 | * | ||
5 | * $Id: h720x-flash.c,v 1.11 2004/11/04 13:24:14 gleixner Exp $ | ||
6 | * | ||
7 | * (C) 2002 Jungjun Kim <jungjun.kim@hynix.com> | ||
8 | * 2003 Thomas Gleixner <tglx@linutronix.de> | ||
9 | */ | ||
10 | |||
11 | #include <linux/config.h> | ||
12 | #include <linux/module.h> | ||
13 | #include <linux/types.h> | ||
14 | #include <linux/kernel.h> | ||
15 | #include <linux/init.h> | ||
16 | #include <linux/errno.h> | ||
17 | #include <linux/slab.h> | ||
18 | |||
19 | #include <linux/mtd/mtd.h> | ||
20 | #include <linux/mtd/map.h> | ||
21 | #include <linux/mtd/partitions.h> | ||
22 | #include <asm/hardware.h> | ||
23 | #include <asm/io.h> | ||
24 | |||
25 | static struct mtd_info *mymtd; | ||
26 | |||
27 | static struct map_info h720x_map = { | ||
28 | .name = "H720X", | ||
29 | .bankwidth = 4, | ||
30 | .size = FLASH_SIZE, | ||
31 | .phys = FLASH_PHYS, | ||
32 | }; | ||
33 | |||
34 | static struct mtd_partition h720x_partitions[] = { | ||
35 | { | ||
36 | .name = "ArMon", | ||
37 | .size = 0x00080000, | ||
38 | .offset = 0, | ||
39 | .mask_flags = MTD_WRITEABLE | ||
40 | },{ | ||
41 | .name = "Env", | ||
42 | .size = 0x00040000, | ||
43 | .offset = 0x00080000, | ||
44 | .mask_flags = MTD_WRITEABLE | ||
45 | },{ | ||
46 | .name = "Kernel", | ||
47 | .size = 0x00180000, | ||
48 | .offset = 0x000c0000, | ||
49 | .mask_flags = MTD_WRITEABLE | ||
50 | },{ | ||
51 | .name = "Ramdisk", | ||
52 | .size = 0x00400000, | ||
53 | .offset = 0x00240000, | ||
54 | .mask_flags = MTD_WRITEABLE | ||
55 | },{ | ||
56 | .name = "jffs2", | ||
57 | .size = MTDPART_SIZ_FULL, | ||
58 | .offset = MTDPART_OFS_APPEND | ||
59 | } | ||
60 | }; | ||
61 | |||
62 | #define NUM_PARTITIONS (sizeof(h720x_partitions)/sizeof(h720x_partitions[0])) | ||
63 | |||
64 | static int nr_mtd_parts; | ||
65 | static struct mtd_partition *mtd_parts; | ||
66 | static const char *probes[] = { "cmdlinepart", NULL }; | ||
67 | |||
68 | /* | ||
69 | * Initialize FLASH support | ||
70 | */ | ||
71 | int __init h720x_mtd_init(void) | ||
72 | { | ||
73 | |||
74 | char *part_type = NULL; | ||
75 | |||
76 | h720x_map.virt = ioremap(FLASH_PHYS, FLASH_SIZE); | ||
77 | |||
78 | if (!h720x_map.virt) { | ||
79 | printk(KERN_ERR "H720x-MTD: ioremap failed\n"); | ||
80 | return -EIO; | ||
81 | } | ||
82 | |||
83 | simple_map_init(&h720x_map); | ||
84 | |||
85 | // Probe for flash bankwidth 4 | ||
86 | printk (KERN_INFO "H720x-MTD probing 32bit FLASH\n"); | ||
87 | mymtd = do_map_probe("cfi_probe", &h720x_map); | ||
88 | if (!mymtd) { | ||
89 | printk (KERN_INFO "H720x-MTD probing 16bit FLASH\n"); | ||
90 | // Probe for bankwidth 2 | ||
91 | h720x_map.bankwidth = 2; | ||
92 | mymtd = do_map_probe("cfi_probe", &h720x_map); | ||
93 | } | ||
94 | |||
95 | if (mymtd) { | ||
96 | mymtd->owner = THIS_MODULE; | ||
97 | |||
98 | #ifdef CONFIG_MTD_PARTITIONS | ||
99 | nr_mtd_parts = parse_mtd_partitions(mymtd, probes, &mtd_parts, 0); | ||
100 | if (nr_mtd_parts > 0) | ||
101 | part_type = "command line"; | ||
102 | #endif | ||
103 | if (nr_mtd_parts <= 0) { | ||
104 | mtd_parts = h720x_partitions; | ||
105 | nr_mtd_parts = NUM_PARTITIONS; | ||
106 | part_type = "builtin"; | ||
107 | } | ||
108 | printk(KERN_INFO "Using %s partition table\n", part_type); | ||
109 | add_mtd_partitions(mymtd, mtd_parts, nr_mtd_parts); | ||
110 | return 0; | ||
111 | } | ||
112 | |||
113 | iounmap((void *)h720x_map.virt); | ||
114 | return -ENXIO; | ||
115 | } | ||
116 | |||
117 | /* | ||
118 | * Cleanup | ||
119 | */ | ||
120 | static void __exit h720x_mtd_cleanup(void) | ||
121 | { | ||
122 | |||
123 | if (mymtd) { | ||
124 | del_mtd_partitions(mymtd); | ||
125 | map_destroy(mymtd); | ||
126 | } | ||
127 | |||
128 | /* Free partition info, if commandline partition was used */ | ||
129 | if (mtd_parts && (mtd_parts != h720x_partitions)) | ||
130 | kfree (mtd_parts); | ||
131 | |||
132 | if (h720x_map.virt) { | ||
133 | iounmap((void *)h720x_map.virt); | ||
134 | h720x_map.virt = 0; | ||
135 | } | ||
136 | } | ||
137 | |||
138 | |||
139 | module_init(h720x_mtd_init); | ||
140 | module_exit(h720x_mtd_cleanup); | ||
141 | |||
142 | MODULE_LICENSE("GPL"); | ||
143 | MODULE_AUTHOR("Thomas Gleixner <tglx@linutronix.de>"); | ||
144 | MODULE_DESCRIPTION("MTD map driver for Hynix evaluation boards"); | ||