mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-01 14:09:43 +02:00
98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
|
/*
|
||
|
|
* 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");
|