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// 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 0x09400000
#define WINDOW_SIZE 0x00200000
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 = 0x0e0000
},
{
.name = "BIOS",
.offset = 0x0e0000,
.size = 0x020000,
},
{
.name = "Drive B",
.offset = 0x100000,
.size = 0x100000
}
};
#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_nocache(ts5500_map.phys, ts5500_map.size);
if (!ts5500_map.virt) {
printk(KERN_ERR "Failed to ioremap_nocache\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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