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/*
* This file is "heavily based" ;) on physmap.c, which I copied
* and changed to suit my needs! But to show who is responsible
* for the file I included the new copyright. I don't know if that
* is the correct way, so if this should be a problem, please
* email me!
*
* (C) 2002 senTec Elektronik GmbH, Heiko Degenhardt
* <linux@sentec-elektronik.de>
*
*
* $Id: $
*
* ----------------------------------------------------------------------
* File: cobra5272.c
* Place: uClinux-dist/linux-2.4.x/drivers/mtd/maps/
* Author: Heiko Degenhardt (linux@sentec-elektronik.de)
* Contents: Flash layout of the COBRA5272 board.
* Version: v01.00
* Date: Mon Mar 25 09:01:01 CET 2002
* ______________________________________________________________________
*
* CHANGES
* 020325 v01.00 Creation from physmap.c
* (hede)
* ______________________________________________________________________
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Mappings of chips in memory of the senTec COBRA5272 board.
*
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#include <linux/config.h>
#define WINDOW_ADDR 0xffe00000
#define WINDOW_SIZE 0x200000
#define BUSWIDTH 2
static struct mtd_info *mymtd;
__u8 cb5272map_read8(struct map_info *map, unsigned long ofs)
{
return __raw_readb(map->map_priv_1 + ofs);
}
__u16 cb5272map_read16(struct map_info *map, unsigned long ofs)
{
return __raw_readw(map->map_priv_1 + ofs);
}
__u32 cb5272map_read32(struct map_info *map, unsigned long ofs)
{
return __raw_readl(map->map_priv_1 + ofs);
}
void cb5272map_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy_fromio(to, map->map_priv_1 + from, len);
}
void cb5272map_write8(struct map_info *map, __u8 d, unsigned long adr)
{
__raw_writeb(d, map->map_priv_1 + adr);
mb();
}
void cb5272map_write16(struct map_info *map, __u16 d, unsigned long adr)
{
__raw_writew(d, map->map_priv_1 + adr);
mb();
}
void cb5272map_write32(struct map_info *map, __u32 d, unsigned long adr)
{
__raw_writel(d, map->map_priv_1 + adr);
mb();
}
void cb5272map_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy_toio(map->map_priv_1 + to, from, len);
}
struct map_info cb5272map_map = {
name: "Physically mapped flash of COBRA5272",
size: WINDOW_SIZE,
buswidth: BUSWIDTH,
read8: cb5272map_read8,
read16: cb5272map_read16,
read32: cb5272map_read32,
copy_from: cb5272map_copy_from,
write8: cb5272map_write8,
write16: cb5272map_write16,
write32: cb5272map_write32,
copy_to: cb5272map_copy_to
};
/*
* MTD 'PARTITIONING' STUFF
*/
#define NUM_PARTITIONS 10
static struct mtd_partition nettel_partitions[NUM_PARTITIONS] = {
{
name: "boot (16K)",
size: 0x4000,
offset: 0
},
{
name: "kernel (512K)",
size: 0x80000,
offset: 0x80000
},
{
name: "rootfs (1024K)",
size: 0x100000,
offset: 0x100000
},
{
name: "spare (8K)",
size: 0x2000,
offset: 0x4000
},
{
name: "spare (8K)",
size: 0x2000,
offset: 0x6000
},
{
name: "spare (256K)",
size: 0x40000,
offset: 0x40000
},
{
name: "complete (2048K)",
size: 0x200000,
offset: 0x0
},
{
name: "boot J13 (256K)",
size: 0x40000,
offset: 0x100000
},
{
name: "kernel J13 (512K)",
size: 0x80000,
offset: 0x140000
},
{
name: "rootfs J13 (256K)",
size: 0x40000,
offset: 0x1c0000
}
};
#if LINUX_VERSION_CODE < 0x20212 && defined(MODULE)
#define init_cb5272map init_module
#define cleanup_cb5272map cleanup_module
#endif
int __init init_cb5272map(void)
{
printk(KERN_NOTICE "cb5272map flash device: %x at %x\n", WINDOW_SIZE, WINDOW_ADDR);
cb5272map_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
if (!cb5272map_map.map_priv_1) {
printk("Failed to ioremap\n");
return -EIO;
}
mymtd = do_map_probe("cfi_probe", &cb5272map_map);
if (mymtd) {
mymtd->module = THIS_MODULE;
return add_mtd_partitions(mymtd, nettel_partitions, NUM_PARTITIONS);
}
iounmap((void *)cb5272map_map.map_priv_1);
return -ENXIO;
}
static void __exit cleanup_cb5272map(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
}
if (cb5272map_map.map_priv_1) {
iounmap((void *)cb5272map_map.map_priv_1);
cb5272map_map.map_priv_1 = 0;
}
}
module_init(init_cb5272map);
module_exit(cleanup_cb5272map);
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