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/*
* Flash memory access on RDC R8610 Evaluation board
*
* (C) 2009, Florian Fainelli
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/types.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 r8610_map = {
.name = "r8610",
.size = CONFIG_MTD_RDC3210_SIZE,
.bankwidth = CONFIG_MTD_RDC3210_BUSWIDTH,
};
static struct mtd_partition r8610_partitions[] = {
{
.name = "Kernel",
.size = 0x001f0000,
.offset = 0
},{
.name = "Config",
.size = 0x10000,
.offset = MTDPART_OFS_APPEND,
},{
.name = "Initrd",
.size = 0x1E0000,
.offset = MTDPART_OFS_APPEND,
},{
.name = "Redboot",
.size = 0x20000,
.offset = MTDPART_OFS_APPEND,
.mask_flags = MTD_WRITEABLE
}
};
static struct mtd_info *mymtd;
int __init r8610_mtd_init(void)
{
struct mtd_partition *parts;
int nb_parts = 0;
/*
* Static partition definition selection
*/
parts = r8610_partitions;
nb_parts = ARRAY_SIZE(r8610_partitions);
/*
* Now let's probe for the actual flash. Do it here since
* specific machine settings might have been set above.
*/
r8610_map.phys = -r8610_map.size;
printk(KERN_NOTICE "r8610: flash device: %lx at %x\n", r8610_map.size, r8610_map.phys);
r8610_map.map_priv_1 = (unsigned long)(r8610_map.virt = ioremap_nocache(r8610_map.phys, r8610_map.size));
if (!r8610_map.map_priv_1) {
printk(KERN_ERR "Failed to ioremap\n");
return -EIO;
}
mymtd = do_map_probe("cfi_probe", &r8610_map);
if (!mymtd) {
iounmap(r8610_map.virt);
return -ENXIO;
}
mymtd->owner = THIS_MODULE;
add_mtd_partitions(mymtd, parts, nb_parts);
return 0;
}
static void __exit r8610_mtd_cleanup(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
iounmap(r8610_map.virt);
}
}
module_init(r8610_mtd_init);
module_exit(r8610_mtd_cleanup);
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_DESCRIPTION("RDC R8610 MTD driver");
MODULE_LICENSE("GPL");
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