[deliverable/linux.git] / drivers / mtd / maps / dbox2-flash.c

/*
 * 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/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 ARRAY_SIZE(partition_info)

#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,
};

static 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("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	* D-Box 2 flash driver
	3	*/
	4
	5	#include <linux/module.h>
	6	#include <linux/types.h>
	7	#include <linux/kernel.h>
	8	#include <linux/init.h>
	9	#include <asm/io.h>
	10	#include <linux/mtd/mtd.h>
	11	#include <linux/mtd/map.h>
	12	#include <linux/mtd/partitions.h>
1da177e4 LT	13	#include <linux/errno.h>
	14
	15	/* partition_info gives details on the logical partitions that the split the
	16	* single flash device into. If the size if zero we use up to the end of the
	17	* device. */
	18	static struct mtd_partition partition_info[]= {
	19	{
	20	.name = "BR bootloader",
69f34c98 TG	21	.size = 128 * 1024,
69f34c98 TG	22	.offset = 0,
1da177e4 LT	23	.mask_flags = MTD_WRITEABLE
	24	},
	25	{
	26	.name = "FLFS (U-Boot)",
69f34c98 TG	27	.size = 128 * 1024,
69f34c98 TG	28	.offset = MTDPART_OFS_APPEND,
1da177e4 LT	29	.mask_flags = 0
	30	},
	31	{
69f34c98 TG	32	.name = "Root (SquashFS)",
	33	.size = 7040 * 1024,
	34	.offset = MTDPART_OFS_APPEND,
1da177e4 LT	35	.mask_flags = 0
	36	},
	37	{
	38	.name = "var (JFFS2)",
69f34c98 TG	39	.size = 896 * 1024,
69f34c98 TG	40	.offset = MTDPART_OFS_APPEND,
1da177e4 LT	41	.mask_flags = 0
	42	},
	43	{
69f34c98 TG	44	.name = "Flash without bootloader",
	45	.size = MTDPART_SIZ_FULL,
	46	.offset = 128 * 1024,
1da177e4 LT	47	.mask_flags = 0
	48	},
	49	{
69f34c98 TG	50	.name = "Complete Flash",
	51	.size = MTDPART_SIZ_FULL,
	52	.offset = 0,
1da177e4 LT	53	.mask_flags = MTD_WRITEABLE
	54	}
	55	};
	56
87d10f3c	57	#define NUM_PARTITIONS ARRAY_SIZE(partition_info)
1da177e4 LT	58
	59	#define WINDOW_ADDR 0x10000000
	60	#define WINDOW_SIZE 0x800000
	61
	62	static struct mtd_info *mymtd;
	63
	64
	65	struct map_info dbox2_flash_map = {
	66	.name = "D-Box 2 flash memory",
	67	.size = WINDOW_SIZE,
	68	.bankwidth = 4,
	69	.phys = WINDOW_ADDR,
	70	};
	71
baa0f0fc	72	static int __init init_dbox2_flash(void)
1da177e4 LT	73	{
	74	printk(KERN_NOTICE "D-Box 2 flash driver (size->0x%X mem->0x%X)\n", WINDOW_SIZE, WINDOW_ADDR);
	75	dbox2_flash_map.virt = ioremap(WINDOW_ADDR, WINDOW_SIZE);
	76
	77	if (!dbox2_flash_map.virt) {
	78	printk("Failed to ioremap\n");
	79	return -EIO;
	80	}
	81	simple_map_init(&dbox2_flash_map);
	82
	83	// Probe for dual Intel 28F320 or dual AMD
	84	mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
	85	if (!mymtd) {
	86	// Probe for single Intel 28F640
	87	dbox2_flash_map.bankwidth = 2;
69f34c98	88
1da177e4 LT	89	mymtd = do_map_probe("cfi_probe", &dbox2_flash_map);
1da177e4 LT	90	}
69f34c98	91
1da177e4 LT	92	if (mymtd) {
	93	mymtd->owner = THIS_MODULE;
	94
	95	/* Create MTD devices for each partition. */
	96	add_mtd_partitions(mymtd, partition_info, NUM_PARTITIONS);
69f34c98	97
1da177e4 LT	98	return 0;
	99	}
	100
	101	iounmap((void *)dbox2_flash_map.virt);
	102	return -ENXIO;
	103	}
	104
	105	static void __exit cleanup_dbox2_flash(void)
	106	{
	107	if (mymtd) {
	108	del_mtd_partitions(mymtd);
	109	map_destroy(mymtd);
	110	}
	111	if (dbox2_flash_map.virt) {
	112	iounmap((void *)dbox2_flash_map.virt);
	113	dbox2_flash_map.virt = 0;
	114	}
	115	}
	116
	117	module_init(init_dbox2_flash);
	118	module_exit(cleanup_dbox2_flash);
	119
	120
	121	MODULE_LICENSE("GPL");
151e7659	122	MODULE_AUTHOR("Kári Davíðsson <kd@flaga.is>, Bastian Blank <waldi@tuxbox.org>, Alexander Wild <wild@te-elektronik.com>");
1da177e4	123	MODULE_DESCRIPTION("MTD map driver for D-Box 2 board");