// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ts5500_flash . c - - MTD map driver for Technology Systems TS - 5500 board
*
* Copyright ( C ) 2004 Sean Young < sean @ mess . org >
*
* Note :
* - In order for detection to work , jumper 3 must be set .
* - Drive A and B use the resident flash disk ( RFD ) flash translation layer .
* - If you have created your own jffs file system and the bios overwrites
* it during boot , try disabling Drive A : and B : in the boot order .
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mtd/map.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>
#define WINDOW_ADDR 0 x09400000
#define WINDOW_SIZE 0 x00200000
static struct map_info ts5500_map = {
.name = "TS-5500 Flash" ,
.size = WINDOW_SIZE,
.bankwidth = 1 ,
.phys = WINDOW_ADDR
};
static const struct mtd_partition ts5500_partitions[] = {
{
.name = "Drive A" ,
.offset = 0 ,
.size = 0 x0e0000
},
{
.name = "BIOS" ,
.offset = 0 x0e0000,
.size = 0 x020000,
},
{
.name = "Drive B" ,
.offset = 0 x100000,
.size = 0 x100000
}
};
#define NUM_PARTITIONS ARRAY_SIZE(ts5500_partitions)
static struct mtd_info *mymtd;
static int __init init_ts5500_map(void )
{
int rc = 0 ;
ts5500_map.virt = ioremap(ts5500_map.phys, ts5500_map.size);
if (!ts5500_map.virt) {
printk(KERN_ERR "Failed to ioremap\n" );
rc = -EIO;
goto err2;
}
simple_map_init(&ts5500_map);
mymtd = do_map_probe("jedec_probe" , &ts5500_map);
if (!mymtd)
mymtd = do_map_probe("map_rom" , &ts5500_map);
if (!mymtd) {
rc = -ENXIO;
goto err1;
}
mymtd->owner = THIS_MODULE;
mtd_device_register(mymtd, ts5500_partitions, NUM_PARTITIONS);
return 0 ;
err1:
iounmap(ts5500_map.virt);
err2:
return rc;
}
static void __exit cleanup_ts5500_map(void )
{
if (mymtd) {
mtd_device_unregister(mymtd);
map_destroy(mymtd);
}
if (ts5500_map.virt) {
iounmap(ts5500_map.virt);
ts5500_map.virt = NULL;
}
}
module_init(init_ts5500_map);
module_exit(cleanup_ts5500_map);
MODULE_LICENSE("GPL" );
MODULE_AUTHOR("Sean Young <sean@mess.org>" );
MODULE_DESCRIPTION("MTD map driver for Technology Systems TS-5500 board" );
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