drivers/mtd/maps/ipaq-flash.c - third_party/linux - Git at Google

 /*
  * Flash memory access on iPAQ Handhelds (either SA1100 or PXA250 based)
  *
  * (C) 2000 Nicolas Pitre <nico@cam.org>
  * (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com>
  * (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes
  *
  * $Id: ipaq-flash.c,v 1.3 2004/11/04 13:24:15 gleixner Exp $
  */

 #include <linux/config.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <asm/page.h>
 #include <asm/mach-types.h>
 #include <asm/system.h>
 #include <asm/errno.h>

 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/partitions.h>
 #ifdef CONFIG_MTD_CONCAT
 #include <linux/mtd/concat.h>
 #endif

 #include <asm/hardware.h>
 #include <asm/arch-sa1100/h3600.h>
 #include <asm/io.h>


 #ifndef CONFIG_IPAQ_HANDHELD
 #error This is for iPAQ Handhelds only
 #endif
 #ifdef CONFIG_SA1100_JORNADA56X

 static void jornada56x_set_vpp(struct map_info *map, int vpp)
 {
 	if (vpp)
 		GPSR = GPIO_GPIO26;
 	else
 		GPCR = GPIO_GPIO26;
 	GPDR |= GPIO_GPIO26;
 }

 #endif

 #ifdef CONFIG_SA1100_JORNADA720

 static void jornada720_set_vpp(struct map_info *map, int vpp)
 {
 	if (vpp)
 		PPSR |= 0x80;
 	else
 		PPSR &= ~0x80;
 	PPDR |= 0x80;
 }

 #endif

 #define MAX_IPAQ_CS 2		/* Number of CS we are going to test */

 #define IPAQ_MAP_INIT(X) \
 	{ \
 		name:		"IPAQ flash " X, \
 	}


 static struct map_info ipaq_map[MAX_IPAQ_CS] = {
 	IPAQ_MAP_INIT("bank 1"),
 	IPAQ_MAP_INIT("bank 2")
 };

 static struct mtd_info *my_sub_mtd[MAX_IPAQ_CS] = {
 	NULL,
 	NULL
 };

 /*
  * Here are partition information for all known IPAQ-based devices.
  * See include/linux/mtd/partitions.h for definition of the mtd_partition
  * structure.
  *
  * The *_max_flash_size is the maximum possible mapped flash size which
  * is not necessarily the actual flash size.  It must be no more than
  * the value specified in the "struct map_desc *_io_desc" mapping
  * definition for the corresponding machine.
  *
  * Please keep these in alphabetical order, and formatted as per existing
  * entries.  Thanks.
  */

 #ifdef CONFIG_IPAQ_HANDHELD
 static unsigned long h3xxx_max_flash_size = 0x04000000;
 static struct mtd_partition h3xxx_partitions[] = {
 	{
 		name:		"H3XXX boot firmware",
 #ifndef CONFIG_LAB
 		size:		0x00040000,
 #else
 		size:		0x00080000,
 #endif
 		offset:		0,
 #ifndef CONFIG_LAB
 		mask_flags:	MTD_WRITEABLE,  /* force read-only */
 #endif
 	},
 	{
 		name:		"H3XXX root jffs2",
 #ifndef CONFIG_LAB
 		size:		0x2000000 - 2*0x40000, /* Warning, this is fixed later */
 		offset:		0x00040000,
 #else
 		size:		0x2000000 - 0x40000 - 0x80000, /* Warning, this is fixed later */
 		offset:		0x00080000,
 #endif
 	},
 	{
 		name:		"asset",
 		size:		0x40000,
 		offset:		0x2000000 - 0x40000, /* Warning, this is fixed later */
 		mask_flags:	MTD_WRITEABLE,  /* force read-only */
 	}
 };

 #ifndef CONFIG_MTD_CONCAT
 static struct mtd_partition h3xxx_partitions_bank2[] = {
 	/* this is used only on 2 CS machines when concat is not present */
 	{
 		name:		"second H3XXX root jffs2",
 		size:		0x1000000 - 0x40000, /* Warning, this is fixed later */
 		offset:		0x00000000,
 	},
 	{
 		name:		"second asset",
 		size:		0x40000,
 		offset:		0x1000000 - 0x40000, /* Warning, this is fixed later */
 		mask_flags:	MTD_WRITEABLE,  /* force read-only */
 	}
 };
 #endif

 static DEFINE_SPINLOCK(ipaq_vpp_lock);

 static void h3xxx_set_vpp(struct map_info *map, int vpp)
 {
 	static int nest = 0;

 	spin_lock(&ipaq_vpp_lock);
 	if (vpp)
 		nest++;
 	else
 		nest--;
 	if (nest)
 		assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 1);
 	else
 		assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 0);
 	spin_unlock(&ipaq_vpp_lock);
 }

 #endif

 #if defined(CONFIG_SA1100_JORNADA56X) || defined(CONFIG_SA1100_JORNADA720)
 static unsigned long jornada_max_flash_size = 0x02000000;
 static struct mtd_partition jornada_partitions[] = {
 	{
 		name:		"Jornada boot firmware",
 		size:		0x00040000,
 		offset:		0,
 		mask_flags:	MTD_WRITEABLE,  /* force read-only */
 	}, {
 		name:		"Jornada root jffs2",
 		size:		MTDPART_SIZ_FULL,
 		offset:		0x00040000,
 	}
 };
 #endif


 static struct mtd_partition *parsed_parts;
 static struct mtd_info *mymtd;

 static unsigned long cs_phys[] = {
 #ifdef CONFIG_ARCH_SA1100
 	SA1100_CS0_PHYS,
 	SA1100_CS1_PHYS,
 	SA1100_CS2_PHYS,
 	SA1100_CS3_PHYS,
 	SA1100_CS4_PHYS,
 	SA1100_CS5_PHYS,
 #else
 	PXA_CS0_PHYS,
 	PXA_CS1_PHYS,
 	PXA_CS2_PHYS,
 	PXA_CS3_PHYS,
 	PXA_CS4_PHYS,
 	PXA_CS5_PHYS,
 #endif
 };

 static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };

 static int __init h1900_special_case(void);

 int __init ipaq_mtd_init(void)
 {
 	struct mtd_partition *parts = NULL;
 	int nb_parts = 0;
 	int parsed_nr_parts = 0;
 	const char *part_type;
 	int i; /* used when we have >1 flash chips */
 	unsigned long tot_flashsize = 0; /* used when we have >1 flash chips */

 	/* Default flash bankwidth */
 	// ipaq_map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4;

 	if (machine_is_h1900())
 	{
 		/* For our intents, the h1900 is not a real iPAQ, so we special-case it. */
 		return h1900_special_case();
 	}

 	if (machine_is_h3100() || machine_is_h1900())
 		for(i=0; i<MAX_IPAQ_CS; i++)
 			ipaq_map[i].bankwidth = 2;
 	else
 		for(i=0; i<MAX_IPAQ_CS; i++)
 			ipaq_map[i].bankwidth = 4;

 	/*
 	 * Static partition definition selection
 	 */
 	part_type = "static";

 	simple_map_init(&ipaq_map[0]);
 	simple_map_init(&ipaq_map[1]);

 #ifdef CONFIG_IPAQ_HANDHELD
 	if (machine_is_ipaq()) {
 		parts = h3xxx_partitions;
 		nb_parts = ARRAY_SIZE(h3xxx_partitions);
 		for(i=0; i<MAX_IPAQ_CS; i++) {
 			ipaq_map[i].size = h3xxx_max_flash_size;
 			ipaq_map[i].set_vpp = h3xxx_set_vpp;
 			ipaq_map[i].phys = cs_phys[i];
 			ipaq_map[i].virt = __ioremap(cs_phys[i], 0x04000000, 0, 1);
 			if (machine_is_h3100 () || machine_is_h1900())
 				ipaq_map[i].bankwidth = 2;
 		}
 		if (machine_is_h3600()) {
 			/* No asset partition here */
 			h3xxx_partitions[1].size += 0x40000;
 			nb_parts--;
 		}
 	}
 #endif
 #ifdef CONFIG_ARCH_H5400
 	if (machine_is_h5400()) {
 		ipaq_map[0].size = 0x02000000;
 		ipaq_map[1].size = 0x02000000;
 		ipaq_map[1].phys = 0x02000000;
 		ipaq_map[1].virt = ipaq_map[0].virt + 0x02000000;
 	}
 #endif
 #ifdef CONFIG_ARCH_H1900
 	if (machine_is_h1900()) {
 		ipaq_map[0].size = 0x00400000;
 		ipaq_map[1].size = 0x02000000;
 		ipaq_map[1].phys = 0x00080000;
 		ipaq_map[1].virt = ipaq_map[0].virt + 0x00080000;
 	}
 #endif

 #ifdef CONFIG_SA1100_JORNADA56X
 	if (machine_is_jornada56x()) {
 		parts = jornada_partitions;
 		nb_parts = ARRAY_SIZE(jornada_partitions);
 		ipaq_map[0].size = jornada_max_flash_size;
 		ipaq_map[0].set_vpp = jornada56x_set_vpp;
 		ipaq_map[0].virt = (__u32)__ioremap(0x0, 0x04000000, 0, 1);
 	}
 #endif
 #ifdef CONFIG_SA1100_JORNADA720
 	if (machine_is_jornada720()) {
 		parts = jornada_partitions;
 		nb_parts = ARRAY_SIZE(jornada_partitions);
 		ipaq_map[0].size = jornada_max_flash_size;
 		ipaq_map[0].set_vpp = jornada720_set_vpp;
 	}
 #endif


 	if (machine_is_ipaq()) { /* for iPAQs only */
 		for(i=0; i<MAX_IPAQ_CS; i++) {
 			printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with CFI.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
 			my_sub_mtd[i] = do_map_probe("cfi_probe", &ipaq_map[i]);
 			if (!my_sub_mtd[i]) {
 				printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
 				my_sub_mtd[i] = do_map_probe("jedec_probe", &ipaq_map[i]);
 			}
 			if (!my_sub_mtd[i]) {
 				printk(KERN_NOTICE "iPAQ flash: failed to find flash.\n");
 				if (i)
 					break;
 				else
 					return -ENXIO;
 			} else
 				printk(KERN_NOTICE "iPAQ flash: found %d bytes\n", my_sub_mtd[i]->size);

 			/* do we really need this debugging? --joshua 20030703 */
 			// printk("my_sub_mtd[%d]=%p\n", i, my_sub_mtd[i]);
 			my_sub_mtd[i]->owner = THIS_MODULE;
 			tot_flashsize += my_sub_mtd[i]->size;
 		}
 #ifdef CONFIG_MTD_CONCAT
 		/* fix the asset location */
 #	ifdef CONFIG_LAB
 		h3xxx_partitions[1].size = tot_flashsize - 0x40000 - 0x80000 /* extra big boot block */;
 #	else
 		h3xxx_partitions[1].size = tot_flashsize - 2 * 0x40000;
 #	endif
 		h3xxx_partitions[2].offset = tot_flashsize - 0x40000;
 		/* and concat the devices */
 		mymtd = mtd_concat_create(&my_sub_mtd[0], i,
 					  "ipaq");
 		if (!mymtd) {
 			printk("Cannot create iPAQ concat device\n");
 			return -ENXIO;
 		}
 #else
 		mymtd = my_sub_mtd[0];

 		/*
 		 *In the very near future, command line partition parsing
 		 * will use the device name as 'mtd-id' instead of a value
 		 * passed to the parse_cmdline_partitions() routine. Since
 		 * the bootldr says 'ipaq', make sure it continues to work.
 		 */
 		mymtd->name = "ipaq";

 		if ((machine_is_h3600())) {
 #	ifdef CONFIG_LAB
 			h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x80000;
 #	else
 			h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000;
 #	endif
 			nb_parts = 2;
 		} else {
 #	ifdef CONFIG_LAB
 			h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000 - 0x80000; /* extra big boot block */
 #	else
 			h3xxx_partitions[1].size = my_sub_mtd[0]->size - 2*0x40000;
 #	endif
 			h3xxx_partitions[2].offset = my_sub_mtd[0]->size - 0x40000;
 		}

 		if (my_sub_mtd[1]) {
 #	ifdef CONFIG_LAB
 			h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x80000;
 #	else
 			h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x40000;
 #	endif
 			h3xxx_partitions_bank2[1].offset = my_sub_mtd[1]->size - 0x40000;
 		}
 #endif
 	}
 	else {
 		/*
 		 * Now let's probe for the actual flash.  Do it here since
 		 * specific machine settings might have been set above.
 		 */
 		printk(KERN_NOTICE "IPAQ flash: probing %d-bit flash bus, window=%lx\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
 		mymtd = do_map_probe("cfi_probe", &ipaq_map[0]);
 		if (!mymtd)
 			return -ENXIO;
 		mymtd->owner = THIS_MODULE;
 	}


 	/*
 	 * Dynamic partition selection stuff (might override the static ones)
 	 */

 	 i = parse_mtd_partitions(mymtd, part_probes, &parsed_parts, 0);

 	 if (i > 0) {
 		 nb_parts = parsed_nr_parts = i;
 		 parts = parsed_parts;
 		 part_type = "dynamic";
 	 }

 	 if (!parts) {
 		 printk(KERN_NOTICE "IPAQ flash: no partition info available, registering whole flash at once\n");
 		 add_mtd_device(mymtd);
 #ifndef CONFIG_MTD_CONCAT
 		 if (my_sub_mtd[1])
 			 add_mtd_device(my_sub_mtd[1]);
 #endif
 	 } else {
 		 printk(KERN_NOTICE "Using %s partition definition\n", part_type);
 		 add_mtd_partitions(mymtd, parts, nb_parts);
 #ifndef CONFIG_MTD_CONCAT
 		 if (my_sub_mtd[1])
 			 add_mtd_partitions(my_sub_mtd[1], h3xxx_partitions_bank2, ARRAY_SIZE(h3xxx_partitions_bank2));
 #endif
 	 }

 	 return 0;
 }

 static void __exit ipaq_mtd_cleanup(void)
 {
 	int i;

 	if (mymtd) {
 		del_mtd_partitions(mymtd);
 #ifndef CONFIG_MTD_CONCAT
 		if (my_sub_mtd[1])
 			del_mtd_partitions(my_sub_mtd[1]);
 #endif
 		map_destroy(mymtd);
 #ifdef CONFIG_MTD_CONCAT
 		for(i=0; i<MAX_IPAQ_CS; i++)
 #else
 			for(i=1; i<MAX_IPAQ_CS; i++)
 #endif
 			{
 				if (my_sub_mtd[i])
 					map_destroy(my_sub_mtd[i]);
 			}
 		if (parsed_parts)
 			kfree(parsed_parts);
 	}
 }

 static int __init h1900_special_case(void)
 {
 	/* The iPAQ h1900 is a special case - it has weird ROM. */
 	simple_map_init(&ipaq_map[0]);
 	ipaq_map[0].size = 0x80000;
 	ipaq_map[0].set_vpp = h3xxx_set_vpp;
 	ipaq_map[0].phys = 0x0;
 	ipaq_map[0].virt = __ioremap(0x0, 0x04000000, 0, 1);
 	ipaq_map[0].bankwidth = 2;

 	printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
 	mymtd = do_map_probe("jedec_probe", &ipaq_map[0]);
 	if (!mymtd)
 		return -ENODEV;
 	add_mtd_device(mymtd);
 	printk(KERN_NOTICE "iPAQ flash: registered h1910 flash\n");

 	return 0;
 }

 module_init(ipaq_mtd_init);
 module_exit(ipaq_mtd_cleanup);

 MODULE_AUTHOR("Jamey Hicks");
 MODULE_DESCRIPTION("IPAQ CFI map driver");
 MODULE_LICENSE("MIT");
	/*
	* Flash memory access on iPAQ Handhelds (either SA1100 or PXA250 based)
	*
	* (C) 2000 Nicolas Pitre <nico@cam.org>
	* (C) 2002 Hewlett-Packard Company <jamey.hicks@hp.com>
	* (C) 2003 Christian Pellegrin <chri@ascensit.com>, <chri@infis.univ.ts.it>: concatenation of multiple flashes
	*
	* $Id: ipaq-flash.c,v 1.3 2004/11/04 13:24:15 gleixner Exp $
	*/

	#include <linux/config.h>
	#include <linux/module.h>
	#include <linux/types.h>
	#include <linux/kernel.h>
	#include <linux/spinlock.h>
	#include <linux/init.h>
	#include <linux/slab.h>
	#include <asm/page.h>
	#include <asm/mach-types.h>
	#include <asm/system.h>
	#include <asm/errno.h>

	#include <linux/mtd/mtd.h>
	#include <linux/mtd/map.h>
	#include <linux/mtd/partitions.h>
	#ifdef CONFIG_MTD_CONCAT
	#include <linux/mtd/concat.h>
	#endif

	#include <asm/hardware.h>
	#include <asm/arch-sa1100/h3600.h>
	#include <asm/io.h>


	#ifndef CONFIG_IPAQ_HANDHELD
	#error This is for iPAQ Handhelds only
	#endif
	#ifdef CONFIG_SA1100_JORNADA56X

	static void jornada56x_set_vpp(struct map_info *map, int vpp)
	{
	if (vpp)
	GPSR = GPIO_GPIO26;
	else
	GPCR = GPIO_GPIO26;
	GPDR \|= GPIO_GPIO26;
	}

	#endif

	#ifdef CONFIG_SA1100_JORNADA720

	static void jornada720_set_vpp(struct map_info *map, int vpp)
	{
	if (vpp)
	PPSR \|= 0x80;
	else
	PPSR &= ~0x80;
	PPDR \|= 0x80;
	}

	#endif

	#define MAX_IPAQ_CS 2 /* Number of CS we are going to test */

	#define IPAQ_MAP_INIT(X) \
	{ \
	name: "IPAQ flash " X, \
	}


	static struct map_info ipaq_map[MAX_IPAQ_CS] = {
	IPAQ_MAP_INIT("bank 1"),
	IPAQ_MAP_INIT("bank 2")
	};

	static struct mtd_info *my_sub_mtd[MAX_IPAQ_CS] = {
	NULL,
	NULL
	};

	/*
	* Here are partition information for all known IPAQ-based devices.
	* See include/linux/mtd/partitions.h for definition of the mtd_partition
	* structure.
	*
	* The *_max_flash_size is the maximum possible mapped flash size which
	* is not necessarily the actual flash size. It must be no more than
	* the value specified in the "struct map_desc *_io_desc" mapping
	* definition for the corresponding machine.
	*
	* Please keep these in alphabetical order, and formatted as per existing
	* entries. Thanks.
	*/

	#ifdef CONFIG_IPAQ_HANDHELD
	static unsigned long h3xxx_max_flash_size = 0x04000000;
	static struct mtd_partition h3xxx_partitions[] = {
	{
	name: "H3XXX boot firmware",
	#ifndef CONFIG_LAB
	size: 0x00040000,
	#else
	size: 0x00080000,
	#endif
	offset: 0,
	#ifndef CONFIG_LAB
	mask_flags: MTD_WRITEABLE, /* force read-only */
	#endif
	},
	{
	name: "H3XXX root jffs2",
	#ifndef CONFIG_LAB
	size: 0x2000000 - 20x40000, / Warning, this is fixed later */
	offset: 0x00040000,
	#else
	size: 0x2000000 - 0x40000 - 0x80000, /* Warning, this is fixed later */
	offset: 0x00080000,
	#endif
	},
	{
	name: "asset",
	size: 0x40000,
	offset: 0x2000000 - 0x40000, /* Warning, this is fixed later */
	mask_flags: MTD_WRITEABLE, /* force read-only */
	}
	};

	#ifndef CONFIG_MTD_CONCAT
	static struct mtd_partition h3xxx_partitions_bank2[] = {
	/* this is used only on 2 CS machines when concat is not present */
	{
	name: "second H3XXX root jffs2",
	size: 0x1000000 - 0x40000, /* Warning, this is fixed later */
	offset: 0x00000000,
	},
	{
	name: "second asset",
	size: 0x40000,
	offset: 0x1000000 - 0x40000, /* Warning, this is fixed later */
	mask_flags: MTD_WRITEABLE, /* force read-only */
	}
	};
	#endif

	static DEFINE_SPINLOCK(ipaq_vpp_lock);

	static void h3xxx_set_vpp(struct map_info *map, int vpp)
	{
	static int nest = 0;

	spin_lock(&ipaq_vpp_lock);
	if (vpp)
	nest++;
	else
	nest--;
	if (nest)
	assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 1);
	else
	assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, 0);
	spin_unlock(&ipaq_vpp_lock);
	}

	#endif

	#if defined(CONFIG_SA1100_JORNADA56X) \|\| defined(CONFIG_SA1100_JORNADA720)
	static unsigned long jornada_max_flash_size = 0x02000000;
	static struct mtd_partition jornada_partitions[] = {
	{
	name: "Jornada boot firmware",
	size: 0x00040000,
	offset: 0,
	mask_flags: MTD_WRITEABLE, /* force read-only */
	}, {
	name: "Jornada root jffs2",
	size: MTDPART_SIZ_FULL,
	offset: 0x00040000,
	}
	};
	#endif


	static struct mtd_partition *parsed_parts;
	static struct mtd_info *mymtd;

	static unsigned long cs_phys[] = {
	#ifdef CONFIG_ARCH_SA1100
	SA1100_CS0_PHYS,
	SA1100_CS1_PHYS,
	SA1100_CS2_PHYS,
	SA1100_CS3_PHYS,
	SA1100_CS4_PHYS,
	SA1100_CS5_PHYS,
	#else
	PXA_CS0_PHYS,
	PXA_CS1_PHYS,
	PXA_CS2_PHYS,
	PXA_CS3_PHYS,
	PXA_CS4_PHYS,
	PXA_CS5_PHYS,
	#endif
	};

	static const char *part_probes[] = { "cmdlinepart", "RedBoot", NULL };

	static int __init h1900_special_case(void);

	int __init ipaq_mtd_init(void)
	{
	struct mtd_partition *parts = NULL;
	int nb_parts = 0;
	int parsed_nr_parts = 0;
	const char *part_type;
	int i; /* used when we have >1 flash chips */
	unsigned long tot_flashsize = 0; /* used when we have >1 flash chips */

	/* Default flash bankwidth */
	// ipaq_map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4;

	if (machine_is_h1900())
	{
	/* For our intents, the h1900 is not a real iPAQ, so we special-case it. */
	return h1900_special_case();
	}

	if (machine_is_h3100() \|\| machine_is_h1900())
	for(i=0; i<MAX_IPAQ_CS; i++)
	ipaq_map[i].bankwidth = 2;
	else
	for(i=0; i<MAX_IPAQ_CS; i++)
	ipaq_map[i].bankwidth = 4;

	/*
	* Static partition definition selection
	*/
	part_type = "static";

	simple_map_init(&ipaq_map[0]);
	simple_map_init(&ipaq_map[1]);

	#ifdef CONFIG_IPAQ_HANDHELD
	if (machine_is_ipaq()) {
	parts = h3xxx_partitions;
	nb_parts = ARRAY_SIZE(h3xxx_partitions);
	for(i=0; i<MAX_IPAQ_CS; i++) {
	ipaq_map[i].size = h3xxx_max_flash_size;
	ipaq_map[i].set_vpp = h3xxx_set_vpp;
	ipaq_map[i].phys = cs_phys[i];
	ipaq_map[i].virt = __ioremap(cs_phys[i], 0x04000000, 0, 1);
	if (machine_is_h3100 () \|\| machine_is_h1900())
	ipaq_map[i].bankwidth = 2;
	}
	if (machine_is_h3600()) {
	/* No asset partition here */
	h3xxx_partitions[1].size += 0x40000;
	nb_parts--;
	}
	}
	#endif
	#ifdef CONFIG_ARCH_H5400
	if (machine_is_h5400()) {
	ipaq_map[0].size = 0x02000000;
	ipaq_map[1].size = 0x02000000;
	ipaq_map[1].phys = 0x02000000;
	ipaq_map[1].virt = ipaq_map[0].virt + 0x02000000;
	}
	#endif
	#ifdef CONFIG_ARCH_H1900
	if (machine_is_h1900()) {
	ipaq_map[0].size = 0x00400000;
	ipaq_map[1].size = 0x02000000;
	ipaq_map[1].phys = 0x00080000;
	ipaq_map[1].virt = ipaq_map[0].virt + 0x00080000;
	}
	#endif

	#ifdef CONFIG_SA1100_JORNADA56X
	if (machine_is_jornada56x()) {
	parts = jornada_partitions;
	nb_parts = ARRAY_SIZE(jornada_partitions);
	ipaq_map[0].size = jornada_max_flash_size;
	ipaq_map[0].set_vpp = jornada56x_set_vpp;
	ipaq_map[0].virt = (__u32)__ioremap(0x0, 0x04000000, 0, 1);
	}
	#endif
	#ifdef CONFIG_SA1100_JORNADA720
	if (machine_is_jornada720()) {
	parts = jornada_partitions;
	nb_parts = ARRAY_SIZE(jornada_partitions);
	ipaq_map[0].size = jornada_max_flash_size;
	ipaq_map[0].set_vpp = jornada720_set_vpp;
	}
	#endif


	if (machine_is_ipaq()) { /* for iPAQs only */
	for(i=0; i<MAX_IPAQ_CS; i++) {
	printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with CFI.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
	my_sub_mtd[i] = do_map_probe("cfi_probe", &ipaq_map[i]);
	if (!my_sub_mtd[i]) {
	printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[i].bankwidth*8, ipaq_map[i].virt);
	my_sub_mtd[i] = do_map_probe("jedec_probe", &ipaq_map[i]);
	}
	if (!my_sub_mtd[i]) {
	printk(KERN_NOTICE "iPAQ flash: failed to find flash.\n");
	if (i)
	break;
	else
	return -ENXIO;
	} else
	printk(KERN_NOTICE "iPAQ flash: found %d bytes\n", my_sub_mtd[i]->size);

	/* do we really need this debugging? --joshua 20030703 */
	// printk("my_sub_mtd[%d]=%p\n", i, my_sub_mtd[i]);
	my_sub_mtd[i]->owner = THIS_MODULE;
	tot_flashsize += my_sub_mtd[i]->size;
	}
	#ifdef CONFIG_MTD_CONCAT
	/* fix the asset location */
	# ifdef CONFIG_LAB
	h3xxx_partitions[1].size = tot_flashsize - 0x40000 - 0x80000 /* extra big boot block */;
	# else
	h3xxx_partitions[1].size = tot_flashsize - 2 * 0x40000;
	# endif
	h3xxx_partitions[2].offset = tot_flashsize - 0x40000;
	/* and concat the devices */
	mymtd = mtd_concat_create(&my_sub_mtd[0], i,
	"ipaq");
	if (!mymtd) {
	printk("Cannot create iPAQ concat device\n");
	return -ENXIO;
	}
	#else
	mymtd = my_sub_mtd[0];

	/*
	*In the very near future, command line partition parsing
	* will use the device name as 'mtd-id' instead of a value
	* passed to the parse_cmdline_partitions() routine. Since
	* the bootldr says 'ipaq', make sure it continues to work.
	*/
	mymtd->name = "ipaq";

	if ((machine_is_h3600())) {
	# ifdef CONFIG_LAB
	h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x80000;
	# else
	h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000;
	# endif
	nb_parts = 2;
	} else {
	# ifdef CONFIG_LAB
	h3xxx_partitions[1].size = my_sub_mtd[0]->size - 0x40000 - 0x80000; /* extra big boot block */
	# else
	h3xxx_partitions[1].size = my_sub_mtd[0]->size - 2*0x40000;
	# endif
	h3xxx_partitions[2].offset = my_sub_mtd[0]->size - 0x40000;
	}

	if (my_sub_mtd[1]) {
	# ifdef CONFIG_LAB
	h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x80000;
	# else
	h3xxx_partitions_bank2[0].size = my_sub_mtd[1]->size - 0x40000;
	# endif
	h3xxx_partitions_bank2[1].offset = my_sub_mtd[1]->size - 0x40000;
	}
	#endif
	}
	else {
	/*
	* Now let's probe for the actual flash. Do it here since
	* specific machine settings might have been set above.
	*/
	printk(KERN_NOTICE "IPAQ flash: probing %d-bit flash bus, window=%lx\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
	mymtd = do_map_probe("cfi_probe", &ipaq_map[0]);
	if (!mymtd)
	return -ENXIO;
	mymtd->owner = THIS_MODULE;
	}


	/*
	* Dynamic partition selection stuff (might override the static ones)
	*/

	i = parse_mtd_partitions(mymtd, part_probes, &parsed_parts, 0);

	if (i > 0) {
	nb_parts = parsed_nr_parts = i;
	parts = parsed_parts;
	part_type = "dynamic";
	}

	if (!parts) {
	printk(KERN_NOTICE "IPAQ flash: no partition info available, registering whole flash at once\n");
	add_mtd_device(mymtd);
	#ifndef CONFIG_MTD_CONCAT
	if (my_sub_mtd[1])
	add_mtd_device(my_sub_mtd[1]);
	#endif
	} else {
	printk(KERN_NOTICE "Using %s partition definition\n", part_type);
	add_mtd_partitions(mymtd, parts, nb_parts);
	#ifndef CONFIG_MTD_CONCAT
	if (my_sub_mtd[1])
	add_mtd_partitions(my_sub_mtd[1], h3xxx_partitions_bank2, ARRAY_SIZE(h3xxx_partitions_bank2));
	#endif
	}

	return 0;
	}

	static void __exit ipaq_mtd_cleanup(void)
	{
	int i;

	if (mymtd) {
	del_mtd_partitions(mymtd);
	#ifndef CONFIG_MTD_CONCAT
	if (my_sub_mtd[1])
	del_mtd_partitions(my_sub_mtd[1]);
	#endif
	map_destroy(mymtd);
	#ifdef CONFIG_MTD_CONCAT
	for(i=0; i<MAX_IPAQ_CS; i++)
	#else
	for(i=1; i<MAX_IPAQ_CS; i++)
	#endif
	{
	if (my_sub_mtd[i])
	map_destroy(my_sub_mtd[i]);
	}
	if (parsed_parts)
	kfree(parsed_parts);
	}
	}

	static int __init h1900_special_case(void)
	{
	/* The iPAQ h1900 is a special case - it has weird ROM. */
	simple_map_init(&ipaq_map[0]);
	ipaq_map[0].size = 0x80000;
	ipaq_map[0].set_vpp = h3xxx_set_vpp;
	ipaq_map[0].phys = 0x0;
	ipaq_map[0].virt = __ioremap(0x0, 0x04000000, 0, 1);
	ipaq_map[0].bankwidth = 2;

	printk(KERN_NOTICE "iPAQ flash: probing %d-bit flash bus, window=%lx with JEDEC.\n", ipaq_map[0].bankwidth*8, ipaq_map[0].virt);
	mymtd = do_map_probe("jedec_probe", &ipaq_map[0]);
	if (!mymtd)
	return -ENODEV;
	add_mtd_device(mymtd);
	printk(KERN_NOTICE "iPAQ flash: registered h1910 flash\n");

	return 0;
	}

	module_init(ipaq_mtd_init);
	module_exit(ipaq_mtd_cleanup);

	MODULE_AUTHOR("Jamey Hicks");
	MODULE_DESCRIPTION("IPAQ CFI map driver");
	MODULE_LICENSE("MIT");