127 lines
2.8 KiB
C
127 lines
2.8 KiB
C
|
/*
|
|||
|
|
* $Id: dbox2-flash.c,v 1.13 2004/11/04 13:24:14 gleixner Exp $
|
|||
|
|
*
|
|||
|
|
* D-Box 2 flash driver
|
|||
|
|
*/
|
|||
|
|
|
|||
|
|
#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>
|
|||
|
|
#include <linux/config.h>
|
|||
|
|
#include <linux/errno.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",
|
|||
|
|
.size = 128 * 1024,
|
|||
|
|
.offset = 0,
|
|||
|
|
.mask_flags = MTD_WRITEABLE
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
.name = "FLFS (U-Boot)",
|
|||
|
|
.size = 128 * 1024,
|
|||
|
|
.offset = MTDPART_OFS_APPEND,
|
|||
|
|
.mask_flags = 0
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
.name = "Root (SquashFS)",
|
|||
|
|
.size = 7040 * 1024,
|
|||
|
|
.offset = MTDPART_OFS_APPEND,
|
|||
|
|
.mask_flags = 0
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
.name = "var (JFFS2)",
|
|||
|
|
.size = 896 * 1024,
|
|||
|
|
.offset = MTDPART_OFS_APPEND,
|
|||
|
|
.mask_flags = 0
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
.name = "Flash without bootloader",
|
|||
|
|
.size = MTDPART_SIZ_FULL,
|
|||
|
|
.offset = 128 * 1024,
|
|||
|
|
.mask_flags = 0
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
.name = "Complete Flash",
|
|||
|
|
.size = MTDPART_SIZ_FULL,
|
|||
|
|
.offset = 0,
|
|||
|
|
.mask_flags = MTD_WRITEABLE
|
|||
|
|
}
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
#define NUM_PARTITIONS (sizeof(partition_info) / sizeof(partition_info[0]))
|
|||
|
|
|
|||
|
|
#define WINDOW_ADDR 0x10000000
|
|||
|
|
#define WINDOW_SIZE 0x800000
|
|||
|
|
|
|||
|
|
static struct mtd_info *mymtd;
|
|||
|
|
|
|||
|
|
|
|||
|
|
struct map_info dbox2_flash_map = {
|
|||
|
|
.name = "D-Box 2 flash memory",
|
|||
|
|
.size = WINDOW_SIZE,
|
|||
|
|
.bankwidth = 4,
|
|||
|
|
.phys = WINDOW_ADDR,
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
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.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
|
|||
|
|
|
|||
|
|
if (!dbox2_flash_map.virt) {
|
|||
|
|
printk("Failed to ioremap\n");
|
|||
|
|
return -EIO;
|
|||
|
|
}
|
|||
|
|
simple_map_init(&dbox2_flash_map);
|
|||
|
|
|
|||
|
|
// 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.bankwidth = 2;
|
|||
|
|
|
|||
|
|
mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
if (mymtd) {
|
|||
|
|
mymtd->owner = THIS_MODULE;
|
|||
|
|
|
|||
|
|
/* Create MTD devices for each partition. */
|
|||
|
|
add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
|
|||
|
|
|
|||
|
|
return 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
iounmap((void *)dbox2_flash_map.virt);
|
|||
|
|
return -ENXIO;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
static void __exit cleanup_dbox2_flash(void)
|
|||
|
|
{
|
|||
|
|
if (mymtd) {
|
|||
|
|
del_mtd_partitions(mymtd);
|
|||
|
|
map_destroy(mymtd);
|
|||
|
|
}
|
|||
|
|
if (dbox2_flash_map.virt) {
|
|||
|
|
iounmap((void *)dbox2_flash_map.virt);
|
|||
|
|
dbox2_flash_map.virt = 0;
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
module_init(init_dbox2_flash);
|
|||
|
|
module_exit(cleanup_dbox2_flash);
|
|||
|
|
|
|||
|
|
|
|||
|
|
MODULE_LICENSE("GPL");
|
|||
|
|
MODULE_AUTHOR("K<EFBFBD>ri Dav<61><76>sson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
|
|||
|
|
MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");
|