/* * $Id: dbox2-flash.c,v 1.5 2003/04/11 11:15:34 gleixner Exp $ * * 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",	.size		= 128 * 1024, 	.offset		= 0,                  	.mask_flags	= MTD_WRITEABLE	},	{	.name		= "flfs (ppcboot)",	.size		= 128 * 1024, 	.offset		= MTDPART_OFS_APPEND, 	.mask_flags	= 0	},	{	.name		= "root (cramfs)",		.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 0x800000static 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("K醨i Dav眇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");