diff options
Diffstat (limited to 'drivers/mtd/maps/ocotea.c')
-rw-r--r-- | drivers/mtd/maps/ocotea.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/mtd/maps/ocotea.c b/drivers/mtd/maps/ocotea.c new file mode 100644 index 000000000000..6e559bc14636 --- /dev/null +++ b/drivers/mtd/maps/ocotea.c | |||
@@ -0,0 +1,154 @@ | |||
1 | /* | ||
2 | * Mapping for Ocotea user flash | ||
3 | * | ||
4 | * Matt Porter <mporter@kernel.crashing.org> | ||
5 | * | ||
6 | * Copyright 2002-2004 MontaVista Software Inc. | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify it | ||
9 | * under the terms of the GNU General Public License as published by the | ||
10 | * Free Software Foundation; either version 2 of the License, or (at your | ||
11 | * option) any later version. | ||
12 | */ | ||
13 | |||
14 | #include <linux/module.h> | ||
15 | #include <linux/types.h> | ||
16 | #include <linux/kernel.h> | ||
17 | #include <linux/init.h> | ||
18 | #include <linux/mtd/mtd.h> | ||
19 | #include <linux/mtd/map.h> | ||
20 | #include <linux/mtd/partitions.h> | ||
21 | #include <linux/config.h> | ||
22 | #include <linux/version.h> | ||
23 | #include <asm/io.h> | ||
24 | #include <asm/ibm44x.h> | ||
25 | #include <platforms/4xx/ocotea.h> | ||
26 | |||
27 | static struct mtd_info *flash; | ||
28 | |||
29 | static struct map_info ocotea_small_map = { | ||
30 | .name = "Ocotea small flash", | ||
31 | .size = OCOTEA_SMALL_FLASH_SIZE, | ||
32 | .buswidth = 1, | ||
33 | }; | ||
34 | |||
35 | static struct map_info ocotea_large_map = { | ||
36 | .name = "Ocotea large flash", | ||
37 | .size = OCOTEA_LARGE_FLASH_SIZE, | ||
38 | .buswidth = 1, | ||
39 | }; | ||
40 | |||
41 | static struct mtd_partition ocotea_small_partitions[] = { | ||
42 | { | ||
43 | .name = "pibs", | ||
44 | .offset = 0x0, | ||
45 | .size = 0x100000, | ||
46 | } | ||
47 | }; | ||
48 | |||
49 | static struct mtd_partition ocotea_large_partitions[] = { | ||
50 | { | ||
51 | .name = "fs", | ||
52 | .offset = 0, | ||
53 | .size = 0x300000, | ||
54 | }, | ||
55 | { | ||
56 | .name = "firmware", | ||
57 | .offset = 0x300000, | ||
58 | .size = 0x100000, | ||
59 | } | ||
60 | }; | ||
61 | |||
62 | #define NB_OF(x) (sizeof(x)/sizeof(x[0])) | ||
63 | |||
64 | int __init init_ocotea(void) | ||
65 | { | ||
66 | u8 fpga0_reg; | ||
67 | u8 *fpga0_adr; | ||
68 | unsigned long long small_flash_base, large_flash_base; | ||
69 | |||
70 | fpga0_adr = ioremap64(OCOTEA_FPGA_ADDR, 16); | ||
71 | if (!fpga0_adr) | ||
72 | return -ENOMEM; | ||
73 | |||
74 | fpga0_reg = readb((unsigned long)fpga0_adr); | ||
75 | iounmap(fpga0_adr); | ||
76 | |||
77 | if (OCOTEA_BOOT_LARGE_FLASH(fpga0_reg)) { | ||
78 | small_flash_base = OCOTEA_SMALL_FLASH_HIGH; | ||
79 | large_flash_base = OCOTEA_LARGE_FLASH_LOW; | ||
80 | } | ||
81 | else { | ||
82 | small_flash_base = OCOTEA_SMALL_FLASH_LOW; | ||
83 | large_flash_base = OCOTEA_LARGE_FLASH_HIGH; | ||
84 | } | ||
85 | |||
86 | ocotea_small_map.phys = small_flash_base; | ||
87 | ocotea_small_map.virt = ioremap64(small_flash_base, | ||
88 | ocotea_small_map.size); | ||
89 | |||
90 | if (!ocotea_small_map.virt) { | ||
91 | printk("Failed to ioremap flash\n"); | ||
92 | return -EIO; | ||
93 | } | ||
94 | |||
95 | simple_map_init(&ocotea_small_map); | ||
96 | |||
97 | flash = do_map_probe("map_rom", &ocotea_small_map); | ||
98 | if (flash) { | ||
99 | flash->owner = THIS_MODULE; | ||
100 | add_mtd_partitions(flash, ocotea_small_partitions, | ||
101 | NB_OF(ocotea_small_partitions)); | ||
102 | } else { | ||
103 | printk("map probe failed for flash\n"); | ||
104 | return -ENXIO; | ||
105 | } | ||
106 | |||
107 | ocotea_large_map.phys = large_flash_base; | ||
108 | ocotea_large_map.virt = ioremap64(large_flash_base, | ||
109 | ocotea_large_map.size); | ||
110 | |||
111 | if (!ocotea_large_map.virt) { | ||
112 | printk("Failed to ioremap flash\n"); | ||
113 | return -EIO; | ||
114 | } | ||
115 | |||
116 | simple_map_init(&ocotea_large_map); | ||
117 | |||
118 | flash = do_map_probe("cfi_probe", &ocotea_large_map); | ||
119 | if (flash) { | ||
120 | flash->owner = THIS_MODULE; | ||
121 | add_mtd_partitions(flash, ocotea_large_partitions, | ||
122 | NB_OF(ocotea_large_partitions)); | ||
123 | } else { | ||
124 | printk("map probe failed for flash\n"); | ||
125 | return -ENXIO; | ||
126 | } | ||
127 | |||
128 | return 0; | ||
129 | } | ||
130 | |||
131 | static void __exit cleanup_ocotea(void) | ||
132 | { | ||
133 | if (flash) { | ||
134 | del_mtd_partitions(flash); | ||
135 | map_destroy(flash); | ||
136 | } | ||
137 | |||
138 | if (ocotea_small_map.virt) { | ||
139 | iounmap((void *)ocotea_small_map.virt); | ||
140 | ocotea_small_map.virt = 0; | ||
141 | } | ||
142 | |||
143 | if (ocotea_large_map.virt) { | ||
144 | iounmap((void *)ocotea_large_map.virt); | ||
145 | ocotea_large_map.virt = 0; | ||
146 | } | ||
147 | } | ||
148 | |||
149 | module_init(init_ocotea); | ||
150 | module_exit(cleanup_ocotea); | ||
151 | |||
152 | MODULE_LICENSE("GPL"); | ||
153 | MODULE_AUTHOR("Matt Porter <mporter@kernel.crashing.org>"); | ||
154 | MODULE_DESCRIPTION("MTD map and partitions for IBM 440GX Ocotea boards"); | ||