97 lines
2 KiB
C
97 lines
2 KiB
C
/*
|
|
* Flash memory access on 4G Systems MTX-1 boards
|
|
*
|
|
* $Id: mtx-1_flash.c,v 1.2 2005/11/07 11:14:27 gleixner Exp $
|
|
*
|
|
* (C) 2005 Bruno Randolf <bruno.randolf@4g-systems.biz>
|
|
* (C) 2005 Jörn Engel <joern@wohnheim.fh-wedel.de>
|
|
*
|
|
*/
|
|
|
|
#include <linux/config.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
static struct map_info mtx1_map = {
|
|
.name = "MTX-1 flash",
|
|
.bankwidth = 4,
|
|
.size = 0x2000000,
|
|
.phys = 0x1E000000,
|
|
};
|
|
|
|
static struct mtd_partition mtx1_partitions[] = {
|
|
{
|
|
.name = "filesystem",
|
|
.size = 0x01C00000,
|
|
.offset = 0,
|
|
},{
|
|
.name = "yamon",
|
|
.size = 0x00100000,
|
|
.offset = MTDPART_OFS_APPEND,
|
|
.mask_flags = MTD_WRITEABLE,
|
|
},{
|
|
.name = "kernel",
|
|
.size = 0x002c0000,
|
|
.offset = MTDPART_OFS_APPEND,
|
|
},{
|
|
.name = "yamon env",
|
|
.size = 0x00040000,
|
|
.offset = MTDPART_OFS_APPEND,
|
|
}
|
|
};
|
|
|
|
static struct mtd_info *mtx1_mtd;
|
|
|
|
int __init mtx1_mtd_init(void)
|
|
{
|
|
int ret = -ENXIO;
|
|
|
|
simple_map_init(&mtx1_map);
|
|
|
|
mtx1_map.virt = ioremap(mtx1_map.phys, mtx1_map.size);
|
|
if (!mtx1_map.virt)
|
|
return -EIO;
|
|
|
|
mtx1_mtd = do_map_probe("cfi_probe", &mtx1_map);
|
|
if (!mtx1_mtd)
|
|
goto err;
|
|
|
|
mtx1_mtd->owner = THIS_MODULE;
|
|
|
|
ret = add_mtd_partitions(mtx1_mtd, mtx1_partitions,
|
|
ARRAY_SIZE(mtx1_partitions));
|
|
if (ret)
|
|
goto err;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
iounmap(mtx1_map.virt);
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mtx1_mtd_cleanup(void)
|
|
{
|
|
if (mtx1_mtd) {
|
|
del_mtd_partitions(mtx1_mtd);
|
|
map_destroy(mtx1_mtd);
|
|
}
|
|
if (mtx1_map.virt)
|
|
iounmap(mtx1_map.virt);
|
|
}
|
|
|
|
module_init(mtx1_mtd_init);
|
|
module_exit(mtx1_mtd_cleanup);
|
|
|
|
MODULE_AUTHOR("Bruno Randolf <bruno.randolf@4g-systems.biz>");
|
|
MODULE_DESCRIPTION("MTX-1 flash map");
|
|
MODULE_LICENSE("GPL");
|