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/*
* $Id: iq80310.c,v 1.9 2002/01/01 22:45:02 rmk Exp $
*
* Mapping for the Intel XScale IQ80310 evaluation board
*
* Author: Nicolas Pitre
* Copyright: (C) 2001 MontaVista Software Inc.
*
* 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 <asm/io.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>
#define WINDOW_ADDR 0
#define WINDOW_SIZE 8*1024*1024
#define BUSWIDTH 1
static struct mtd_info *mymtd;
static __u8 iq80310_read8(struct map_info *map, unsigned long ofs)
{
return *(__u8 *)(map->map_priv_1 + ofs);
}
static __u16 iq80310_read16(struct map_info *map, unsigned long ofs)
{
return *(__u16 *)(map->map_priv_1 + ofs);
}
static __u32 iq80310_read32(struct map_info *map, unsigned long ofs)
{
return *(__u32 *)(map->map_priv_1 + ofs);
}
static void iq80310_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy(to, (void *)(map->map_priv_1 + from), len);
}
static void iq80310_write8(struct map_info *map, __u8 d, unsigned long adr)
{
*(__u8 *)(map->map_priv_1 + adr) = d;
}
static void iq80310_write16(struct map_info *map, __u16 d, unsigned long adr)
{
*(__u16 *)(map->map_priv_1 + adr) = d;
}
static void iq80310_write32(struct map_info *map, __u32 d, unsigned long adr)
{
*(__u32 *)(map->map_priv_1 + adr) = d;
}
static void iq80310_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
{
memcpy((void *)(map->map_priv_1 + to), from, len);
}
static struct map_info iq80310_map = {
name: "IQ80310 flash",
size: WINDOW_SIZE,
buswidth: BUSWIDTH,
read8: iq80310_read8,
read16: iq80310_read16,
read32: iq80310_read32,
copy_from: iq80310_copy_from,
write8: iq80310_write8,
write16: iq80310_write16,
write32: iq80310_write32,
copy_to: iq80310_copy_to
};
static struct mtd_partition iq80310_partitions[4] = {
{
name: "Firmware",
size: 0x00080000,
offset: 0,
mask_flags: MTD_WRITEABLE /* force read-only */
},{
name: "Kernel",
size: 0x000a0000,
offset: 0x00080000,
},{
name: "Filesystem",
size: 0x00600000,
offset: 0x00120000
},{
name: "RedBoot",
size: 0x000e0000,
offset: 0x00720000,
mask_flags: MTD_WRITEABLE
}
};
#define NB_OF(x) (sizeof(x)/sizeof(x[0]))
static struct mtd_info *mymtd;
static struct mtd_partition *parsed_parts;
extern int parse_redboot_partitions(struct mtd_info *master, struct mtd_partition **pparts);
static int __init init_iq80310(void)
{
struct mtd_partition *parts;
int nb_parts = 0;
int parsed_nr_parts = 0;
char *part_type = "static";
iq80310_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
if (!iq80310_map.map_priv_1) {
printk("Failed to ioremap\n");
return -EIO;
}
mymtd = do_map_probe("cfi_probe", &iq80310_map);
if (!mymtd) {
iounmap((void *)iq80310_map.map_priv_1);
return -ENXIO;
}
mymtd->module = THIS_MODULE;
#ifdef CONFIG_MTD_REDBOOT_PARTS
if (parsed_nr_parts == 0) {
int ret = parse_redboot_partitions(mymtd, &parsed_parts);
if (ret > 0) {
part_type = "RedBoot";
parsed_nr_parts = ret;
}
}
#endif
if (parsed_nr_parts > 0) {
parts = parsed_parts;
nb_parts = parsed_nr_parts;
} else {
parts = iq80310_partitions;
nb_parts = NB_OF(iq80310_partitions);
}
printk(KERN_NOTICE "Using %s partition definition\n", part_type);
add_mtd_partitions(mymtd, parts, nb_parts);
return 0;
}
static void __exit cleanup_iq80310(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
if (parsed_parts)
kfree(parsed_parts);
}
if (iq80310_map.map_priv_1)
iounmap((void *)iq80310_map.map_priv_1);
}
module_init(init_iq80310);
module_exit(cleanup_iq80310);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Nicolas Pitre <nico@cam.org>");
MODULE_DESCRIPTION("MTD map driver for Intel XScale IQ80310 evaluation board");
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