mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 08:31:55 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
/*
|
|
* $Id: mbx860.c,v 1.8 2004/11/04 13:24:15 gleixner Exp $
|
|
*
|
|
* Handle mapping of the flash on MBX860 boards
|
|
*
|
|
* Author: Anton Todorov
|
|
* Copyright: (C) 2001 Emness Technology
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <asm/io.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/mtd/map.h>
|
|
#include <linux/mtd/partitions.h>
|
|
|
|
|
|
#define WINDOW_ADDR 0xfe000000
|
|
#define WINDOW_SIZE 0x00200000
|
|
|
|
/* Flash / Partition sizing */
|
|
#define MAX_SIZE_KiB 8192
|
|
#define BOOT_PARTITION_SIZE_KiB 512
|
|
#define KERNEL_PARTITION_SIZE_KiB 5632
|
|
#define APP_PARTITION_SIZE_KiB 2048
|
|
|
|
#define NUM_PARTITIONS 3
|
|
|
|
/* partition_info gives details on the logical partitions that the split the
|
|
* single flash device into. If the size if zero we use up to the end of the
|
|
* device. */
|
|
static struct mtd_partition partition_info[]={
|
|
{ .name = "MBX flash BOOT partition",
|
|
.offset = 0,
|
|
.size = BOOT_PARTITION_SIZE_KiB*1024 },
|
|
{ .name = "MBX flash DATA partition",
|
|
.offset = BOOT_PARTITION_SIZE_KiB*1024,
|
|
.size = (KERNEL_PARTITION_SIZE_KiB)*1024 },
|
|
{ .name = "MBX flash APPLICATION partition",
|
|
.offset = (BOOT_PARTITION_SIZE_KiB+KERNEL_PARTITION_SIZE_KiB)*1024 }
|
|
};
|
|
|
|
|
|
static struct mtd_info *mymtd;
|
|
|
|
struct map_info mbx_map = {
|
|
.name = "MBX flash",
|
|
.size = WINDOW_SIZE,
|
|
.phys = WINDOW_ADDR,
|
|
.bankwidth = 4,
|
|
};
|
|
|
|
int __init init_mbx(void)
|
|
{
|
|
printk(KERN_NOTICE "Motorola MBX flash device: 0x%x at 0x%x\n", WINDOW_SIZE*4, WINDOW_ADDR);
|
|
mbx_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE * 4);
|
|
|
|
if (!mbx_map.virt) {
|
|
printk("Failed to ioremap\n");
|
|
return -EIO;
|
|
}
|
|
simple_map_init(&mbx_map);
|
|
|
|
mymtd = do_map_probe("jedec_probe", &mbx_map);
|
|
if (mymtd) {
|
|
mymtd->owner = THIS_MODULE;
|
|
add_mtd_device(mymtd);
|
|
add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
|
|
return 0;
|
|
}
|
|
|
|
iounmap((void *)mbx_map.virt);
|
|
return -ENXIO;
|
|
}
|
|
|
|
static void __exit cleanup_mbx(void)
|
|
{
|
|
if (mymtd) {
|
|
del_mtd_device(mymtd);
|
|
map_destroy(mymtd);
|
|
}
|
|
if (mbx_map.virt) {
|
|
iounmap((void *)mbx_map.virt);
|
|
mbx_map.virt = 0;
|
|
}
|
|
}
|
|
|
|
module_init(init_mbx);
|
|
module_exit(cleanup_mbx);
|
|
|
|
MODULE_AUTHOR("Anton Todorov <a.todorov@emness.com>");
|
|
MODULE_DESCRIPTION("MTD map driver for Motorola MBX860 board");
|
|
MODULE_LICENSE("GPL");
|