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/pb1xxx-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/pb1xxx-flash.c')
-rw-r--r-- | drivers/mtd/maps/pb1xxx-flash.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/mtd/maps/pb1xxx-flash.c b/drivers/mtd/maps/pb1xxx-flash.c new file mode 100644 index 000000000000..06e731540552 --- /dev/null +++ b/drivers/mtd/maps/pb1xxx-flash.c | |||
@@ -0,0 +1,178 @@ | |||
1 | /* | ||
2 | * Flash memory access on Alchemy Pb1xxx boards | ||
3 | * | ||
4 | * (C) 2001 Pete Popov <ppopov@mvista.com> | ||
5 | * | ||
6 | * $Id: pb1xxx-flash.c,v 1.14 2004/11/04 13:24:15 gleixner Exp $ | ||
7 | */ | ||
8 | |||
9 | #include <linux/config.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <linux/types.h> | ||
12 | #include <linux/init.h> | ||
13 | #include <linux/kernel.h> | ||
14 | |||
15 | #include <linux/mtd/mtd.h> | ||
16 | #include <linux/mtd/map.h> | ||
17 | #include <linux/mtd/partitions.h> | ||
18 | |||
19 | #include <asm/io.h> | ||
20 | |||
21 | #ifdef DEBUG_RW | ||
22 | #define DBG(x...) printk(x) | ||
23 | #else | ||
24 | #define DBG(x...) | ||
25 | #endif | ||
26 | |||
27 | #ifdef CONFIG_MIPS_PB1000 | ||
28 | |||
29 | #define WINDOW_ADDR 0x1F800000 | ||
30 | #define WINDOW_SIZE 0x800000 | ||
31 | |||
32 | static struct mtd_partition pb1xxx_partitions[] = { | ||
33 | { | ||
34 | .name = "yamon env", | ||
35 | .size = 0x00020000, | ||
36 | .offset = 0, | ||
37 | .mask_flags = MTD_WRITEABLE}, | ||
38 | { | ||
39 | .name = "User FS", | ||
40 | .size = 0x003e0000, | ||
41 | .offset = 0x20000,}, | ||
42 | { | ||
43 | .name = "boot code", | ||
44 | .size = 0x100000, | ||
45 | .offset = 0x400000, | ||
46 | .mask_flags = MTD_WRITEABLE}, | ||
47 | { | ||
48 | .name = "raw/kernel", | ||
49 | .size = 0x300000, | ||
50 | .offset = 0x500000} | ||
51 | }; | ||
52 | |||
53 | #elif defined(CONFIG_MIPS_PB1500) || defined(CONFIG_MIPS_PB1100) | ||
54 | |||
55 | #if defined(CONFIG_MTD_PB1500_BOOT) && defined(CONFIG_MTD_PB1500_USER) | ||
56 | /* both 32MB banks will be used. Combine the first 32MB bank and the | ||
57 | * first 28MB of the second bank together into a single jffs/jffs2 | ||
58 | * partition. | ||
59 | */ | ||
60 | #define WINDOW_ADDR 0x1C000000 | ||
61 | #define WINDOW_SIZE 0x4000000 | ||
62 | static struct mtd_partition pb1xxx_partitions[] = { | ||
63 | { | ||
64 | .name = "User FS", | ||
65 | .size = 0x3c00000, | ||
66 | .offset = 0x0000000 | ||
67 | },{ | ||
68 | .name = "yamon", | ||
69 | .size = 0x0100000, | ||
70 | .offset = 0x3c00000, | ||
71 | .mask_flags = MTD_WRITEABLE | ||
72 | },{ | ||
73 | .name = "raw kernel", | ||
74 | .size = 0x02c0000, | ||
75 | .offset = 0x3d00000 | ||
76 | } | ||
77 | }; | ||
78 | #elif defined(CONFIG_MTD_PB1500_BOOT) && !defined(CONFIG_MTD_PB1500_USER) | ||
79 | #define WINDOW_ADDR 0x1E000000 | ||
80 | #define WINDOW_SIZE 0x2000000 | ||
81 | static struct mtd_partition pb1xxx_partitions[] = { | ||
82 | { | ||
83 | .name = "User FS", | ||
84 | .size = 0x1c00000, | ||
85 | .offset = 0x0000000 | ||
86 | },{ | ||
87 | .name = "yamon", | ||
88 | .size = 0x0100000, | ||
89 | .offset = 0x1c00000, | ||
90 | .mask_flags = MTD_WRITEABLE | ||
91 | },{ | ||
92 | .name = "raw kernel", | ||
93 | .size = 0x02c0000, | ||
94 | .offset = 0x1d00000 | ||
95 | } | ||
96 | }; | ||
97 | #elif !defined(CONFIG_MTD_PB1500_BOOT) && defined(CONFIG_MTD_PB1500_USER) | ||
98 | #define WINDOW_ADDR 0x1C000000 | ||
99 | #define WINDOW_SIZE 0x2000000 | ||
100 | static struct mtd_partition pb1xxx_partitions[] = { | ||
101 | { | ||
102 | .name = "User FS", | ||
103 | .size = 0x1e00000, | ||
104 | .offset = 0x0000000 | ||
105 | },{ | ||
106 | .name = "raw kernel", | ||
107 | .size = 0x0200000, | ||
108 | .offset = 0x1e00000, | ||
109 | } | ||
110 | }; | ||
111 | #else | ||
112 | #error MTD_PB1500 define combo error /* should never happen */ | ||
113 | #endif | ||
114 | #else | ||
115 | #error Unsupported board | ||
116 | #endif | ||
117 | |||
118 | #define NAME "Pb1x00 Linux Flash" | ||
119 | #define PADDR WINDOW_ADDR | ||
120 | #define BUSWIDTH 4 | ||
121 | #define SIZE WINDOW_SIZE | ||
122 | #define PARTITIONS 4 | ||
123 | |||
124 | static struct map_info pb1xxx_mtd_map = { | ||
125 | .name = NAME, | ||
126 | .size = SIZE, | ||
127 | .bankwidth = BUSWIDTH, | ||
128 | .phys = PADDR, | ||
129 | }; | ||
130 | |||
131 | static struct mtd_info *pb1xxx_mtd; | ||
132 | |||
133 | int __init pb1xxx_mtd_init(void) | ||
134 | { | ||
135 | struct mtd_partition *parts; | ||
136 | int nb_parts = 0; | ||
137 | char *part_type; | ||
138 | |||
139 | /* | ||
140 | * Static partition definition selection | ||
141 | */ | ||
142 | part_type = "static"; | ||
143 | parts = pb1xxx_partitions; | ||
144 | nb_parts = ARRAY_SIZE(pb1xxx_partitions); | ||
145 | |||
146 | /* | ||
147 | * Now let's probe for the actual flash. Do it here since | ||
148 | * specific machine settings might have been set above. | ||
149 | */ | ||
150 | printk(KERN_NOTICE "Pb1xxx flash: probing %d-bit flash bus\n", | ||
151 | BUSWIDTH*8); | ||
152 | pb1xxx_mtd_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE); | ||
153 | |||
154 | simple_map_init(&pb1xxx_mtd_map); | ||
155 | |||
156 | pb1xxx_mtd = do_map_probe("cfi_probe", &pb1xxx_mtd_map); | ||
157 | if (!pb1xxx_mtd) return -ENXIO; | ||
158 | pb1xxx_mtd->owner = THIS_MODULE; | ||
159 | |||
160 | add_mtd_partitions(pb1xxx_mtd, parts, nb_parts); | ||
161 | return 0; | ||
162 | } | ||
163 | |||
164 | static void __exit pb1xxx_mtd_cleanup(void) | ||
165 | { | ||
166 | if (pb1xxx_mtd) { | ||
167 | del_mtd_partitions(pb1xxx_mtd); | ||
168 | map_destroy(pb1xxx_mtd); | ||
169 | iounmap((void *) pb1xxx_mtd_map.virt); | ||
170 | } | ||
171 | } | ||
172 | |||
173 | module_init(pb1xxx_mtd_init); | ||
174 | module_exit(pb1xxx_mtd_cleanup); | ||
175 | |||
176 | MODULE_AUTHOR("Pete Popov"); | ||
177 | MODULE_DESCRIPTION("Pb1xxx CFI map driver"); | ||
178 | MODULE_LICENSE("GPL"); | ||