mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
108 lines
2.1 KiB
108 lines
2.1 KiB
// 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 <[email protected]> |
|
* |
|
* 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(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 <[email protected]>"); |
|
MODULE_DESCRIPTION("MTD map driver for Technology Systems TS-5500 board"); |
|
|
|
|