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/*
* $Id: dbox2-flash.c,v 1.4 2001/10/02 15:05:14 dwmw2 Exp $
*
* Nokia / Sagem D-Box 2 flash driver
*/
#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>
/* 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: "BR bootloader", // raw
size: 128 * 1024,
offset: 0,
mask_flags: MTD_WRITEABLE},
{name: "PPC bootloader", // flfs
size: 128 * 1024,
offset: MTDPART_OFS_APPEND,
mask_flags: 0},
{name: "Kernel", // idxfs
size: 768 * 1024,
offset: MTDPART_OFS_APPEND,
mask_flags: 0},
{name: "System", // jffs
size: MTDPART_SIZ_FULL,
offset: MTDPART_OFS_APPEND,
mask_flags: 0}};
#define NUM_PARTITIONS (sizeof(partition_info) / sizeof(partition_info[0]))
#define WINDOW_ADDR 0x10000000
#define WINDOW_SIZE 0x800000
static struct mtd_info *mymtd;
__u8 dbox2_flash_read8(struct map_info *map, unsigned long ofs)
{
return __raw_readb(map->map_priv_1 + ofs);
}
__u16 dbox2_flash_read16(struct map_info *map, unsigned long ofs)
{
return __raw_readw(map->map_priv_1 + ofs);
}
__u32 dbox2_flash_read32(struct map_info *map, unsigned long ofs)
{
return __raw_readl(map->map_priv_1 + ofs);
}
void dbox2_flash_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
{
memcpy_fromio(to, map->map_priv_1 + from, len);
}
void dbox2_flash_write8(struct map_info *map, __u8 d, unsigned long adr)
{
__raw_writeb(d, map->map_priv_1 + adr);
mb();
}
void dbox2_flash_write16(struct map_info *map, __u16 d, unsigned long adr)
{
__raw_writew(d, map->map_priv_1 + adr);
mb();
}
void dbox2_flash_write32(struct map_info *map, __u32 d, unsigned long adr)
{
__raw_writel(d, map->map_priv_1 + adr);
mb();
}
void dbox2_flash_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 dbox2_flash_map = {
name: "D-Box 2 flash memory",
size: WINDOW_SIZE,
buswidth: 4,
read8: dbox2_flash_read8,
read16: dbox2_flash_read16,
read32: dbox2_flash_read32,
copy_from: dbox2_flash_copy_from,
write8: dbox2_flash_write8,
write16: dbox2_flash_write16,
write32: dbox2_flash_write32,
copy_to: dbox2_flash_copy_to
};
int __init init_dbox2_flash(void)
{
printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
dbox2_flash_map.map_priv_1 = (unsigned long)ioremap(WINDOW_ADDR, WINDOW_SIZE);
if (!dbox2_flash_map.map_priv_1) {
printk("Failed to ioremap\n");
return -EIO;
}
// Probe for dual Intel 28F320 or dual AMD
mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
if (!mymtd) {
// Probe for single Intel 28F640
dbox2_flash_map.buswidth = 2;
mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
}
if (mymtd) {
mymtd->module = THIS_MODULE;
/* Create MTD devices for each partition. */
add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
return 0;
}
iounmap((void *)dbox2_flash_map.map_priv_1);
return -ENXIO;
}
static void __exit cleanup_dbox2_flash(void)
{
if (mymtd) {
del_mtd_partitions(mymtd);
map_destroy(mymtd);
}
if (dbox2_flash_map.map_priv_1) {
iounmap((void *)dbox2_flash_map.map_priv_1);
dbox2_flash_map.map_priv_1 = 0;
}
}
module_init(init_dbox2_flash);
module_exit(cleanup_dbox2_flash);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kri Davsson <kd@flaga.is>");
MODULE_DESCRIPTION("MTD map driver for Nokia/Sagem D-Box 2 board");
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