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Diffstat (limited to 'drivers/mtd/maps/db1550-flash.c')
-rw-r--r--drivers/mtd/maps/db1550-flash.c187
1 files changed, 0 insertions, 187 deletions
diff --git a/drivers/mtd/maps/db1550-flash.c b/drivers/mtd/maps/db1550-flash.c
deleted file mode 100644
index d213888462a4..000000000000
--- a/drivers/mtd/maps/db1550-flash.c
+++ /dev/null
@@ -1,187 +0,0 @@
1/*
2 * Flash memory access on Alchemy Db1550 board
3 *
4 * $Id: db1550-flash.c,v 1.7 2004/11/04 13:24:14 gleixner Exp $
5 *
6 * (C) 2004 Embedded Edge, LLC, based on db1550-flash.c:
7 * (C) 2003, 2004 Pete Popov <ppopov@embeddedalley.com>
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
23#ifdef DEBUG_RW
24#define DBG(x...) printk(x)
25#else
26#define DBG(x...)
27#endif
28
29static unsigned long window_addr;
30static unsigned long window_size;
31
32
33static struct map_info db1550_map = {
34 .name = "Db1550 flash",
35};
36
37static unsigned char flash_bankwidth = 4;
38
39/*
40 * Support only 64MB NOR Flash parts
41 */
42
43#if defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER)
44#define DB1550_BOTH_BANKS
45#elif defined(CONFIG_MTD_DB1550_BOOT) && !defined(CONFIG_MTD_DB1550_USER)
46#define DB1550_BOOT_ONLY
47#elif !defined(CONFIG_MTD_DB1550_BOOT) && defined(CONFIG_MTD_DB1550_USER)
48#define DB1550_USER_ONLY
49#endif
50
51#ifdef DB1550_BOTH_BANKS
52/* both banks will be used. Combine the first bank and the first
53 * part of the second bank together into a single jffs/jffs2
54 * partition.
55 */
56static struct mtd_partition db1550_partitions[] = {
57 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
58 * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
59 * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
60 */
61 {
62 .name = "User FS",
63 .size = (0x1FC00000 - 0x18000000),
64 .offset = 0x0000000
65 },{
66 .name = "yamon",
67 .size = 0x0100000,
68 .offset = MTDPART_OFS_APPEND,
69 .mask_flags = MTD_WRITEABLE
70 },{
71 .name = "raw kernel",
72 .size = (0x300000 - 0x40000), /* last 256KB is yamon env */
73 .offset = MTDPART_OFS_APPEND,
74 }
75};
76#elif defined(DB1550_BOOT_ONLY)
77static struct mtd_partition db1550_partitions[] = {
78 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
79 * 1C00 0000 1FFF FFFF CE0 64MB Boot NOR Flash
80 */
81 {
82 .name = "User FS",
83 .size = 0x03c00000,
84 .offset = 0x0000000
85 },{
86 .name = "yamon",
87 .size = 0x0100000,
88 .offset = MTDPART_OFS_APPEND,
89 .mask_flags = MTD_WRITEABLE
90 },{
91 .name = "raw kernel",
92 .size = (0x300000-0x40000), /* last 256KB is yamon env */
93 .offset = MTDPART_OFS_APPEND,
94 }
95};
96#elif defined(DB1550_USER_ONLY)
97static struct mtd_partition db1550_partitions[] = {
98 /* assume boot[2:0]:swap is '0000' or '1000', which translates to:
99 * 1800 0000 1BFF FFFF CE0 64MB Param NOR Flash
100 */
101 {
102 .name = "User FS",
103 .size = (0x4000000 - 0x200000), /* reserve 2MB for raw kernel */
104 .offset = 0x0000000
105 },{
106 .name = "raw kernel",
107 .size = MTDPART_SIZ_FULL,
108 .offset = MTDPART_OFS_APPEND,
109 }
110};
111#else
112#error MTD_DB1550 define combo error /* should never happen */
113#endif
114
115#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
116
117static struct mtd_info *mymtd;
118
119/*
120 * Probe the flash density and setup window address and size
121 * based on user CONFIG options. There are times when we don't
122 * want the MTD driver to be probing the boot or user flash,
123 * so having the option to enable only one bank is important.
124 */
125int setup_flash_params(void)
126{
127#if defined(DB1550_BOTH_BANKS)
128 window_addr = 0x18000000;
129 window_size = 0x8000000;
130#elif defined(DB1550_BOOT_ONLY)
131 window_addr = 0x1C000000;
132 window_size = 0x4000000;
133#else /* USER ONLY */
134 window_addr = 0x18000000;
135 window_size = 0x4000000;
136#endif
137 return 0;
138}
139
140int __init db1550_mtd_init(void)
141{
142 struct mtd_partition *parts;
143 int nb_parts = 0;
144
145 /* Default flash bankwidth */
146 db1550_map.bankwidth = flash_bankwidth;
147
148 if (setup_flash_params())
149 return -ENXIO;
150
151 /*
152 * Static partition definition selection
153 */
154 parts = db1550_partitions;
155 nb_parts = NB_OF(db1550_partitions);
156 db1550_map.size = window_size;
157
158 /*
159 * Now let's probe for the actual flash. Do it here since
160 * specific machine settings might have been set above.
161 */
162 printk(KERN_NOTICE "Db1550 flash: probing %d-bit flash bus\n",
163 db1550_map.bankwidth*8);
164 db1550_map.virt = ioremap(window_addr, window_size);
165 mymtd = do_map_probe("cfi_probe", &db1550_map);
166 if (!mymtd) return -ENXIO;
167 mymtd->owner = THIS_MODULE;
168
169 add_mtd_partitions(mymtd, parts, nb_parts);
170 return 0;
171}
172
173static void __exit db1550_mtd_cleanup(void)
174{
175 if (mymtd) {
176 del_mtd_partitions(mymtd);
177 map_destroy(mymtd);
178 iounmap((void *) db1550_map.virt);
179 }
180}
181
182module_init(db1550_mtd_init);
183module_exit(db1550_mtd_cleanup);
184
185MODULE_AUTHOR("Embedded Edge, LLC");
186MODULE_DESCRIPTION("Db1550 mtd map driver");
187MODULE_LICENSE("GPL");
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