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/pb1550-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/pb1550-flash.c')
-rw-r--r-- | drivers/mtd/maps/pb1550-flash.c | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/drivers/mtd/maps/pb1550-flash.c b/drivers/mtd/maps/pb1550-flash.c deleted file mode 100644 index 1424726a219e..000000000000 --- a/drivers/mtd/maps/pb1550-flash.c +++ /dev/null | |||
@@ -1,203 +0,0 @@ | |||
1 | /* | ||
2 | * Flash memory access on Alchemy Pb1550 board | ||
3 | * | ||
4 | * $Id: pb1550-flash.c,v 1.6 2004/11/04 13:24:15 gleixner Exp $ | ||
5 | * | ||
6 | * (C) 2004 Embedded Edge, LLC, based on pb1550-flash.c: | ||
7 | * (C) 2003 Pete Popov <ppopov@pacbell.net> | ||
8 | * | ||
9 | */ | ||
10 | |||
11 | #include <linux/config.h> | ||
12 | #include <linux/init.h> | ||
13 | #include <linux/module.h> | ||
14 | #include <linux/types.h> | ||
15 | #include <linux/kernel.h> | ||
16 | |||
17 | #include <linux/mtd/mtd.h> | ||
18 | #include <linux/mtd/map.h> | ||
19 | #include <linux/mtd/partitions.h> | ||
20 | |||
21 | #include <asm/io.h> | ||
22 | #include <asm/au1000.h> | ||
23 | #include <asm/pb1550.h> | ||
24 | |||
25 | #ifdef DEBUG_RW | ||
26 | #define DBG(x...) printk(x) | ||
27 | #else | ||
28 | #define DBG(x...) | ||
29 | #endif | ||
30 | |||
31 | static unsigned long window_addr; | ||
32 | static unsigned long window_size; | ||
33 | |||
34 | |||
35 | static struct map_info pb1550_map = { | ||
36 | .name = "Pb1550 flash", | ||
37 | }; | ||
38 | |||
39 | static unsigned char flash_bankwidth = 4; | ||
40 | |||
41 | /* | ||
42 | * Support only 64MB NOR Flash parts | ||
43 | */ | ||
44 | |||
45 | #ifdef PB1550_BOTH_BANKS | ||
46 | /* both banks will be used. Combine the first bank and the first | ||
47 | * part of the second bank together into a single jffs/jffs2 | ||
48 | * partition. | ||
49 | */ | ||
50 | static struct mtd_partition pb1550_partitions[] = { | ||
51 | /* assume boot[2:0]:swap is '0000' or '1000', which translates to: | ||
52 | * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash | ||
53 | * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash | ||
54 | */ | ||
55 | { | ||
56 | .name = "User FS", | ||
57 | .size = (0x1FC00000 - 0x18000000), | ||
58 | .offset = 0x0000000 | ||
59 | },{ | ||
60 | .name = "yamon", | ||
61 | .size = 0x0100000, | ||
62 | .offset = MTDPART_OFS_APPEND, | ||
63 | .mask_flags = MTD_WRITEABLE | ||
64 | },{ | ||
65 | .name = "raw kernel", | ||
66 | .size = (0x300000 - 0x40000), /* last 256KB is yamon env */ | ||
67 | .offset = MTDPART_OFS_APPEND, | ||
68 | } | ||
69 | }; | ||
70 | #elif defined(PB1550_BOOT_ONLY) | ||
71 | static struct mtd_partition pb1550_partitions[] = { | ||
72 | /* assume boot[2:0]:swap is '0000' or '1000', which translates to: | ||
73 | * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash | ||
74 | */ | ||
75 | { | ||
76 | .name = "User FS", | ||
77 | .size = 0x03c00000, | ||
78 | .offset = 0x0000000 | ||
79 | },{ | ||
80 | .name = "yamon", | ||
81 | .size = 0x0100000, | ||
82 | .offset = MTDPART_OFS_APPEND, | ||
83 | .mask_flags = MTD_WRITEABLE | ||
84 | },{ | ||
85 | .name = "raw kernel", | ||
86 | .size = (0x300000-0x40000), /* last 256KB is yamon env */ | ||
87 | .offset = MTDPART_OFS_APPEND, | ||
88 | } | ||
89 | }; | ||
90 | #elif defined(PB1550_USER_ONLY) | ||
91 | static struct mtd_partition pb1550_partitions[] = { | ||
92 | /* assume boot[2:0]:swap is '0000' or '1000', which translates to: | ||
93 | * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash | ||
94 | */ | ||
95 | { | ||
96 | .name = "User FS", | ||
97 | .size = (0x4000000 - 0x200000), /* reserve 2MB for raw kernel */ | ||
98 | .offset = 0x0000000 | ||
99 | },{ | ||
100 | .name = "raw kernel", | ||
101 | .size = MTDPART_SIZ_FULL, | ||
102 | .offset = MTDPART_OFS_APPEND, | ||
103 | } | ||
104 | }; | ||
105 | #else | ||
106 | #error MTD_PB1550 define combo error /* should never happen */ | ||
107 | #endif | ||
108 | |||
109 | #define NB_OF(x) (sizeof(x)/sizeof(x[0])) | ||
110 | |||
111 | static struct mtd_info *mymtd; | ||
112 | |||
113 | /* | ||
114 | * Probe the flash density and setup window address and size | ||
115 | * based on user CONFIG options. There are times when we don't | ||
116 | * want the MTD driver to be probing the boot or user flash, | ||
117 | * so having the option to enable only one bank is important. | ||
118 | */ | ||
119 | int setup_flash_params(void) | ||
120 | { | ||
121 | u16 boot_swapboot; | ||
122 | boot_swapboot = (au_readl(MEM_STSTAT) & (0x7<<1)) | | ||
123 | ((bcsr->status >> 6) & 0x1); | ||
124 | printk("Pb1550 MTD: boot:swap %d\n", boot_swapboot); | ||
125 | |||
126 | switch (boot_swapboot) { | ||
127 | case 0: /* 512Mbit devices, both enabled */ | ||
128 | case 1: | ||
129 | case 8: | ||
130 | case 9: | ||
131 | #if defined(PB1550_BOTH_BANKS) | ||
132 | window_addr = 0x18000000; | ||
133 | window_size = 0x8000000; | ||
134 | #elif defined(PB1550_BOOT_ONLY) | ||
135 | window_addr = 0x1C000000; | ||
136 | window_size = 0x4000000; | ||
137 | #else /* USER ONLY */ | ||
138 | window_addr = 0x1E000000; | ||
139 | window_size = 0x4000000; | ||
140 | #endif | ||
141 | break; | ||
142 | case 0xC: | ||
143 | case 0xD: | ||
144 | case 0xE: | ||
145 | case 0xF: | ||
146 | /* 64 MB Boot NOR Flash is disabled */ | ||
147 | /* and the start address is moved to 0x0C00000 */ | ||
148 | window_addr = 0x0C000000; | ||
149 | window_size = 0x4000000; | ||
150 | default: | ||
151 | printk("Pb1550 MTD: unsupported boot:swap setting\n"); | ||
152 | return 1; | ||
153 | } | ||
154 | return 0; | ||
155 | } | ||
156 | |||
157 | int __init pb1550_mtd_init(void) | ||
158 | { | ||
159 | struct mtd_partition *parts; | ||
160 | int nb_parts = 0; | ||
161 | |||
162 | /* Default flash bankwidth */ | ||
163 | pb1550_map.bankwidth = flash_bankwidth; | ||
164 | |||
165 | if (setup_flash_params()) | ||
166 | return -ENXIO; | ||
167 | |||
168 | /* | ||
169 | * Static partition definition selection | ||
170 | */ | ||
171 | parts = pb1550_partitions; | ||
172 | nb_parts = NB_OF(pb1550_partitions); | ||
173 | pb1550_map.size = window_size; | ||
174 | |||
175 | /* | ||
176 | * Now let's probe for the actual flash. Do it here since | ||
177 | * specific machine settings might have been set above. | ||
178 | */ | ||
179 | printk(KERN_NOTICE "Pb1550 flash: probing %d-bit flash bus\n", | ||
180 | pb1550_map.bankwidth*8); | ||
181 | pb1550_map.virt = ioremap(window_addr, window_size); | ||
182 | mymtd = do_map_probe("cfi_probe", &pb1550_map); | ||
183 | if (!mymtd) return -ENXIO; | ||
184 | mymtd->owner = THIS_MODULE; | ||
185 | |||
186 | add_mtd_partitions(mymtd, parts, nb_parts); | ||
187 | return 0; | ||
188 | } | ||
189 | |||
190 | static void __exit pb1550_mtd_cleanup(void) | ||
191 | { | ||
192 | if (mymtd) { | ||
193 | del_mtd_partitions(mymtd); | ||
194 | map_destroy(mymtd); | ||
195 | } | ||
196 | } | ||
197 | |||
198 | module_init(pb1550_mtd_init); | ||
199 | module_exit(pb1550_mtd_cleanup); | ||
200 | |||
201 | MODULE_AUTHOR("Embedded Edge, LLC"); | ||
202 | MODULE_DESCRIPTION("Pb1550 mtd map driver"); | ||
203 | MODULE_LICENSE("GPL"); | ||