2 * $Id: lubbock-flash.c,v 1.21 2005/11/07 11:14:27 gleixner Exp $
4 * Map driver for the Lubbock developer platform.
6 * Author: Nicolas Pitre
7 * Copyright: (C) 2001 MontaVista Software Inc.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
19 #include <linux/mtd/mtd.h>
20 #include <linux/mtd/map.h>
21 #include <linux/mtd/partitions.h>
24 #include <asm/hardware.h>
25 #include <asm/arch/pxa-regs.h>
26 #include <asm/arch/lubbock.h>
27 #include <asm/cacheflush.h>
29 #define ROM_ADDR 0x00000000
30 #define FLASH_ADDR 0x04000000
32 #define WINDOW_SIZE 64*1024*1024
34 static void lubbock_map_inval_cache(struct map_info
*map
, unsigned long from
, ssize_t len
)
36 flush_ioremap_region(map
->phys
, map
->cached
, from
, len
);
39 static struct map_info lubbock_maps
[2] = { {
42 .inval_cache
= lubbock_map_inval_cache
,
46 .inval_cache
= lubbock_map_inval_cache
,
49 static struct mtd_partition lubbock_partitions
[] = {
54 .mask_flags
= MTD_WRITEABLE
/* force read-only */
61 .size
= MTDPART_SIZ_FULL
,
66 static struct mtd_info
*mymtds
[2];
67 static struct mtd_partition
*parsed_parts
[2];
68 static int nr_parsed_parts
[2];
70 static const char *probes
[] = { "RedBoot", "cmdlinepart", NULL
};
72 static int __init
init_lubbock(void)
74 int flashboot
= (LUB_CONF_SWITCHES
& 1);
77 lubbock_maps
[0].bankwidth
= lubbock_maps
[1].bankwidth
=
78 (BOOT_DEF
& 1) ? 2 : 4;
80 /* Compensate for the nROMBT switch which swaps the flash banks */
81 printk(KERN_NOTICE
"Lubbock configured to boot from %s (bank %d)\n",
82 flashboot
?"Flash":"ROM", flashboot
);
84 lubbock_maps
[flashboot
^1].name
= "Lubbock Application Flash";
85 lubbock_maps
[flashboot
].name
= "Lubbock Boot ROM";
87 for (i
= 0; i
< 2; i
++) {
88 lubbock_maps
[i
].virt
= ioremap(lubbock_maps
[i
].phys
, WINDOW_SIZE
);
89 if (!lubbock_maps
[i
].virt
) {
90 printk(KERN_WARNING
"Failed to ioremap %s\n", lubbock_maps
[i
].name
);
95 lubbock_maps
[i
].cached
= ioremap_cached(lubbock_maps
[i
].phys
, WINDOW_SIZE
);
96 if (!lubbock_maps
[i
].cached
)
97 printk(KERN_WARNING
"Failed to ioremap cached %s\n", lubbock_maps
[i
].name
);
98 simple_map_init(&lubbock_maps
[i
]);
100 printk(KERN_NOTICE
"Probing %s at physical address 0x%08lx (%d-bit bankwidth)\n",
101 lubbock_maps
[i
].name
, lubbock_maps
[i
].phys
,
102 lubbock_maps
[i
].bankwidth
* 8);
104 mymtds
[i
] = do_map_probe("cfi_probe", &lubbock_maps
[i
]);
107 iounmap((void *)lubbock_maps
[i
].virt
);
108 if (lubbock_maps
[i
].cached
)
109 iounmap(lubbock_maps
[i
].cached
);
114 mymtds
[i
]->owner
= THIS_MODULE
;
116 ret
= parse_mtd_partitions(mymtds
[i
], probes
,
117 &parsed_parts
[i
], 0);
120 nr_parsed_parts
[i
] = ret
;
123 if (!mymtds
[0] && !mymtds
[1])
126 for (i
= 0; i
< 2; i
++) {
128 printk(KERN_WARNING
"%s is absent. Skipping\n", lubbock_maps
[i
].name
);
129 } else if (nr_parsed_parts
[i
]) {
130 add_mtd_partitions(mymtds
[i
], parsed_parts
[i
], nr_parsed_parts
[i
]);
132 printk("Using static partitions on %s\n", lubbock_maps
[i
].name
);
133 add_mtd_partitions(mymtds
[i
], lubbock_partitions
, ARRAY_SIZE(lubbock_partitions
));
135 printk("Registering %s as whole device\n", lubbock_maps
[i
].name
);
136 add_mtd_device(mymtds
[i
]);
142 static void __exit
cleanup_lubbock(void)
145 for (i
= 0; i
< 2; i
++) {
149 if (nr_parsed_parts
[i
] || !i
)
150 del_mtd_partitions(mymtds
[i
]);
152 del_mtd_device(mymtds
[i
]);
154 map_destroy(mymtds
[i
]);
155 iounmap((void *)lubbock_maps
[i
].virt
);
156 if (lubbock_maps
[i
].cached
)
157 iounmap(lubbock_maps
[i
].cached
);
159 kfree(parsed_parts
[i
]);
163 module_init(init_lubbock
);
164 module_exit(cleanup_lubbock
);
166 MODULE_LICENSE("GPL");
167 MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
168 MODULE_DESCRIPTION("MTD map driver for Intel Lubbock");