diff options
author | Pete Popov <ppopov@pacbell.net> | 2005-02-27 16:50:25 -0500 |
---|---|---|
committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 06:45:13 -0400 |
commit | 002fa30170f9500ac31fa22931c689029af7f27b (patch) | |
tree | b633bd9776af565884251588fc86d7aadbf77c43 /drivers/mtd/maps/alchemy-flash.c | |
parent | d30f11d22549c54e9b05d153e37d166f88a2aa43 (diff) |
[MTD] Replace all the Au1x mapping drivers with a simplified single driver
This driver does not have as many options but it's easier to maintain.
And, it turns out AMD never shipped boards with different flash densities.
Signed-off-by: Pete Popov <ppopov@pacbell.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd/maps/alchemy-flash.c')
-rw-r--r-- | drivers/mtd/maps/alchemy-flash.c | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/drivers/mtd/maps/alchemy-flash.c b/drivers/mtd/maps/alchemy-flash.c new file mode 100644 index 000000000000..27fd2a3c3b60 --- /dev/null +++ b/drivers/mtd/maps/alchemy-flash.c | |||
@@ -0,0 +1,192 @@ | |||
1 | /* | ||
2 | * Flash memory access on AMD Alchemy evaluation boards | ||
3 | * | ||
4 | * $Id: alchemy-flash.c,v 1.1 2005/02/27 21:50:21 ppopov Exp $ | ||
5 | * | ||
6 | * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com> | ||
7 | * | ||
8 | */ | ||
9 | |||
10 | #include <linux/config.h> | ||
11 | #include <linux/init.h> | ||
12 | #include <linux/module.h> | ||
13 | #include <linux/types.h> | ||
14 | #include <linux/kernel.h> | ||
15 | |||
16 | #include <linux/mtd/mtd.h> | ||
17 | #include <linux/mtd/map.h> | ||
18 | #include <linux/mtd/partitions.h> | ||
19 | |||
20 | #include <asm/io.h> | ||
21 | |||
22 | #ifdef DEBUG_RW | ||
23 | #define DBG(x...) printk(x) | ||
24 | #else | ||
25 | #define DBG(x...) | ||
26 | #endif | ||
27 | |||
28 | #ifdef CONFIG_MIPS_PB1000 | ||
29 | #define BOARD_MAP_NAME "Pb1000 Flash" | ||
30 | #define BOARD_FLASH_SIZE 0x00800000 /* 8MB */ | ||
31 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
32 | #endif | ||
33 | |||
34 | #ifdef CONFIG_MIPS_PB1500 | ||
35 | #define BOARD_MAP_NAME "Pb1500 Flash" | ||
36 | #define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ | ||
37 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
38 | #endif | ||
39 | |||
40 | #ifdef CONFIG_MIPS_PB1100 | ||
41 | #define BOARD_MAP_NAME "Pb1100 Flash" | ||
42 | #define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ | ||
43 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
44 | #endif | ||
45 | |||
46 | #ifdef CONFIG_MIPS_PB1550 | ||
47 | #define BOARD_MAP_NAME "Pb1550 Flash" | ||
48 | #define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ | ||
49 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
50 | #endif | ||
51 | |||
52 | #ifdef CONFIG_MIPS_PB1200 | ||
53 | #define BOARD_MAP_NAME "Pb1200 Flash" | ||
54 | #define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ | ||
55 | #define BOARD_FLASH_WIDTH 2 /* 16-bits */ | ||
56 | #endif | ||
57 | |||
58 | #ifdef CONFIG_MIPS_DB1000 | ||
59 | #define BOARD_MAP_NAME "Db1000 Flash" | ||
60 | #define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ | ||
61 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
62 | #endif | ||
63 | |||
64 | #ifdef CONFIG_MIPS_DB1500 | ||
65 | #define BOARD_MAP_NAME "Db1500 Flash" | ||
66 | #define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ | ||
67 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
68 | #endif | ||
69 | |||
70 | #ifdef CONFIG_MIPS_DB1100 | ||
71 | #define BOARD_MAP_NAME "Db1100 Flash" | ||
72 | #define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ | ||
73 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
74 | #endif | ||
75 | |||
76 | #ifdef CONFIG_MIPS_DB1550 | ||
77 | #define BOARD_MAP_NAME "Db1550 Flash" | ||
78 | #define BOARD_FLASH_SIZE 0x08000000 /* 128MB */ | ||
79 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
80 | #endif | ||
81 | |||
82 | #ifdef CONFIG_MIPS_DB1200 | ||
83 | #define BOARD_MAP_NAME "Db1200 Flash" | ||
84 | #define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ | ||
85 | #define BOARD_FLASH_WIDTH 2 /* 16-bits */ | ||
86 | #endif | ||
87 | |||
88 | #ifdef CONFIG_MIPS_HYDROGEN3 | ||
89 | #define BOARD_MAP_NAME "Hydrogen3 Flash" | ||
90 | #define BOARD_FLASH_SIZE 0x02000000 /* 32MB */ | ||
91 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
92 | #define USE_LOCAL_ACCESSORS /* why? */ | ||
93 | #endif | ||
94 | |||
95 | #ifdef CONFIG_MIPS_BOSPORUS | ||
96 | #define BOARD_MAP_NAME "Bosporus Flash" | ||
97 | #define BOARD_FLASH_SIZE 0x01000000 /* 16MB */ | ||
98 | #define BOARD_FLASH_WIDTH 2 /* 16-bits */ | ||
99 | #endif | ||
100 | |||
101 | #ifdef CONFIG_MIPS_MIRAGE | ||
102 | #define BOARD_MAP_NAME "Mirage Flash" | ||
103 | #define BOARD_FLASH_SIZE 0x04000000 /* 64MB */ | ||
104 | #define BOARD_FLASH_WIDTH 4 /* 32-bits */ | ||
105 | #define USE_LOCAL_ACCESSORS /* why? */ | ||
106 | #endif | ||
107 | |||
108 | static struct map_info alchemy_map = { | ||
109 | .name = BOARD_MAP_NAME, | ||
110 | }; | ||
111 | |||
112 | static struct mtd_partition alchemy_partitions[] = { | ||
113 | { | ||
114 | .name = "User FS", | ||
115 | .size = BOARD_FLASH_SIZE - 0x00400000, | ||
116 | .offset = 0x0000000 | ||
117 | },{ | ||
118 | .name = "YAMON", | ||
119 | .size = 0x0100000, | ||
120 | .offset = MTDPART_OFS_APPEND, | ||
121 | .mask_flags = MTD_WRITEABLE | ||
122 | },{ | ||
123 | .name = "raw kernel", | ||
124 | .size = (0x300000 - 0x40000), /* last 256KB is yamon env */ | ||
125 | .offset = MTDPART_OFS_APPEND, | ||
126 | } | ||
127 | }; | ||
128 | |||
129 | #define NB_OF(x) (sizeof(x)/sizeof(x[0])) | ||
130 | |||
131 | static struct mtd_info *mymtd; | ||
132 | |||
133 | int __init alchemy_mtd_init(void) | ||
134 | { | ||
135 | struct mtd_partition *parts; | ||
136 | int nb_parts = 0; | ||
137 | unsigned long window_addr; | ||
138 | unsigned long window_size; | ||
139 | |||
140 | /* Default flash buswidth */ | ||
141 | alchemy_map.bankwidth = BOARD_FLASH_WIDTH; | ||
142 | |||
143 | window_addr = 0x20000000 - BOARD_FLASH_SIZE; | ||
144 | window_size = BOARD_FLASH_SIZE; | ||
145 | #ifdef CONFIG_MIPS_MIRAGE_WHY | ||
146 | /* Boot ROM flash bank only; no user bank */ | ||
147 | window_addr = 0x1C000000; | ||
148 | window_size = 0x04000000; | ||
149 | /* USERFS from 0x1C00 0000 to 0x1FC00000 */ | ||
150 | alchemy_partitions[0].size = 0x03C00000; | ||
151 | #endif | ||
152 | |||
153 | /* | ||
154 | * Static partition definition selection | ||
155 | */ | ||
156 | parts = alchemy_partitions; | ||
157 | nb_parts = NB_OF(alchemy_partitions); | ||
158 | alchemy_map.size = window_size; | ||
159 | |||
160 | /* | ||
161 | * Now let's probe for the actual flash. Do it here since | ||
162 | * specific machine settings might have been set above. | ||
163 | */ | ||
164 | printk(KERN_NOTICE BOARD_MAP_NAME ": probing %d-bit flash bus\n", | ||
165 | alchemy_map.bankwidth*8); | ||
166 | alchemy_map.virt = ioremap(window_addr, window_size); | ||
167 | mymtd = do_map_probe("cfi_probe", &alchemy_map); | ||
168 | if (!mymtd) { | ||
169 | iounmap(alchemy_map.virt); | ||
170 | return -ENXIO; | ||
171 | } | ||
172 | mymtd->owner = THIS_MODULE; | ||
173 | |||
174 | add_mtd_partitions(mymtd, parts, nb_parts); | ||
175 | return 0; | ||
176 | } | ||
177 | |||
178 | static void __exit alchemy_mtd_cleanup(void) | ||
179 | { | ||
180 | if (mymtd) { | ||
181 | del_mtd_partitions(mymtd); | ||
182 | map_destroy(mymtd); | ||
183 | iounmap(alchemy_map.virt); | ||
184 | } | ||
185 | } | ||
186 | |||
187 | module_init(alchemy_mtd_init); | ||
188 | module_exit(alchemy_mtd_cleanup); | ||
189 | |||
190 | MODULE_AUTHOR("Embedded Alley Solutions, Inc"); | ||
191 | MODULE_DESCRIPTION(BOARD_MAP_NAME " MTD driver"); | ||
192 | MODULE_LICENSE("GPL"); | ||