arch/arm/mach-ixp23xx/ixdp2351.c - kernel/msm-4.9 - Gitiles

 /*
  * arch/arm/mach-ixp23xx/ixdp2351.c
  *
  * IXDP2351 board-specific routines
  *
  * Author: Deepak Saxena <dsaxena@plexity.net>
  *
  * Copyright 2005 (c) MontaVista Software, Inc.
  *
  * Based on 2.4 code Copyright 2004 (c) Intel Corporation
  *
  * This file is licensed under the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
  * warranty of any kind, whether express or implied.
  */

 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/bitops.h>
 #include <linux/ioport.h>
 #include <linux/serial_8250.h>
 #include <linux/serial_core.h>
 #include <linux/device.h>
 #include <linux/mm.h>
 #include <linux/pci.h>
 #include <linux/mtd/physmap.h>

 #include <asm/types.h>
 #include <asm/setup.h>
 #include <asm/memory.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
 #include <asm/system.h>
 #include <asm/tlbflush.h>
 #include <asm/pgtable.h>

 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/pci.h>

 /*
  * IXDP2351 Interrupt Handling
  */
 static void ixdp2351_inta_mask(unsigned int irq)
 {
 	*IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(irq);
 }

 static void ixdp2351_inta_unmask(unsigned int irq)
 {
 	*IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
 }

 static void ixdp2351_inta_handler(unsigned int irq, struct irq_desc *desc)
 {
 	u16 ex_interrupt =
 		*IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
 	int i;

 	desc->chip->mask(irq);

 	for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
 		if (ex_interrupt & (1 << i)) {
 			struct irq_desc *cpld_desc;
 			int cpld_irq =
 				IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
 			cpld_desc = irq_desc + cpld_irq;
 			desc_handle_irq(cpld_irq, cpld_desc);
 		}
 	}

 	desc->chip->unmask(irq);
 }

 static struct irq_chip ixdp2351_inta_chip = {
 	.ack	= ixdp2351_inta_mask,
 	.mask	= ixdp2351_inta_mask,
 	.unmask	= ixdp2351_inta_unmask
 };

 static void ixdp2351_intb_mask(unsigned int irq)
 {
 	*IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(irq);
 }

 static void ixdp2351_intb_unmask(unsigned int irq)
 {
 	*IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
 }

 static void ixdp2351_intb_handler(unsigned int irq, struct irq_desc *desc)
 {
 	u16 ex_interrupt =
 		*IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
 	int i;

 	desc->chip->ack(irq);

 	for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
 		if (ex_interrupt & (1 << i)) {
 			struct irq_desc *cpld_desc;
 			int cpld_irq =
 				IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
 			cpld_desc = irq_desc + cpld_irq;
 			desc_handle_irq(cpld_irq, cpld_desc);
 		}
 	}

 	desc->chip->unmask(irq);
 }

 static struct irq_chip ixdp2351_intb_chip = {
 	.ack	= ixdp2351_intb_mask,
 	.mask	= ixdp2351_intb_mask,
 	.unmask	= ixdp2351_intb_unmask
 };

 void __init ixdp2351_init_irq(void)
 {
 	int irq;

 	/* Mask all interrupts from CPLD, disable simulation */
 	*IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
 	*IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
 	*IXDP2351_CPLD_INTA_SIM_REG = 0;
 	*IXDP2351_CPLD_INTB_SIM_REG = 0;

 	ixp23xx_init_irq();

 	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
 	     irq <
 	     IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
 	     irq++) {
 		if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
 			set_irq_flags(irq, IRQF_VALID);
 			set_irq_handler(irq, handle_level_irq);
 			set_irq_chip(irq, &ixdp2351_inta_chip);
 		}
 	}

 	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
 	     irq <
 	     IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
 	     irq++) {
 		if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
 			set_irq_flags(irq, IRQF_VALID);
 			set_irq_handler(irq, handle_level_irq);
 			set_irq_chip(irq, &ixdp2351_intb_chip);
 		}
 	}

 	set_irq_chained_handler(IRQ_IXP23XX_INTA, ixdp2351_inta_handler);
 	set_irq_chained_handler(IRQ_IXP23XX_INTB, ixdp2351_intb_handler);
 }

 /*
  * IXDP2351 PCI
  */

 /*
  * This board does not do normal PCI IRQ routing, or any
  * sort of swizzling, so we just need to check where on the
  * bus the device is and figure out what CPLD pin it is
  * being routed to.
  */
 #define DEVPIN(dev, pin) ((pin) | ((dev) << 3))

 static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	u8 bus = dev->bus->number;
 	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
 	struct pci_bus *tmp_bus = dev->bus;

 	/* Primary bus, no interrupts here */
 	if (!bus)
 		return -1;

 	/* Lookup first leaf in bus tree */
 	while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
 		tmp_bus = tmp_bus->parent;

 	/* Select between known bridges */
 	switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
 		/* Device is located after first bridge */
 	case 0x0008:
 		if (tmp_bus == dev->bus) {
 			/* Device is located directy after first bridge */
 			switch (devpin) {
 				/* Onboard 82546 */
 			case DEVPIN(1, 1):	/* Onboard 82546 ch 0 */
 				return IRQ_IXDP2351_INTA_82546;
 			case DEVPIN(1, 2):	/* Onboard 82546 ch 1 */
 				return IRQ_IXDP2351_INTB_82546;
 				/* PMC SLOT */
 			case DEVPIN(0, 1):	/* PMCP INTA# */
 			case DEVPIN(2, 4):	/* PMCS INTD# */
 				return IRQ_IXDP2351_SPCI_PMC_INTA;
 			case DEVPIN(0, 2):	/* PMCP INTB# */
 			case DEVPIN(2, 1):	/* PMCS INTA# */
 				return IRQ_IXDP2351_SPCI_PMC_INTB;
 			case DEVPIN(0, 3):	/* PMCP INTC# */
 			case DEVPIN(2, 2):	/* PMCS INTB# */
 				return IRQ_IXDP2351_SPCI_PMC_INTC;
 			case DEVPIN(0, 4):	/* PMCP INTD# */
 			case DEVPIN(2, 3):	/* PMCS INTC# */
 				return IRQ_IXDP2351_SPCI_PMC_INTD;
 			}
 		} else {
 			/* Device is located indirectly after first bridge */
 			/* Not supported now */
 			return -1;
 		}
 		break;
 	case 0x0010:
 		if (tmp_bus == dev->bus) {
 			/* Device is located directy after second bridge */
 			/* Secondary bus of second bridge */
 			switch (devpin) {
 			case DEVPIN(0, 1):	/* DB#0 */
 			case DEVPIN(0, 2):
 			case DEVPIN(0, 3):
 			case DEVPIN(0, 4):
 				return IRQ_IXDP2351_SPCI_DB_0;
 			case DEVPIN(1, 1):	/* DB#1 */
 			case DEVPIN(1, 2):
 			case DEVPIN(1, 3):
 			case DEVPIN(1, 4):
 				return IRQ_IXDP2351_SPCI_DB_1;
 			case DEVPIN(2, 1):	/* FIC1 */
 			case DEVPIN(2, 2):
 			case DEVPIN(2, 3):
 			case DEVPIN(2, 4):
 			case DEVPIN(3, 1):	/* FIC2 */
 			case DEVPIN(3, 2):
 			case DEVPIN(3, 3):
 			case DEVPIN(3, 4):
 				return IRQ_IXDP2351_SPCI_FIC;
 			}
 		} else {
 			/* Device is located indirectly after second bridge */
 			/* Not supported now */
 			return -1;
 		}
 		break;
 	}

 	return -1;
 }

 struct hw_pci ixdp2351_pci __initdata = {
 	.nr_controllers	= 1,
 	.preinit	= ixp23xx_pci_preinit,
 	.setup		= ixp23xx_pci_setup,
 	.scan		= ixp23xx_pci_scan_bus,
 	.map_irq	= ixdp2351_map_irq,
 };

 int __init ixdp2351_pci_init(void)
 {
 	if (machine_is_ixdp2351())
 		pci_common_init(&ixdp2351_pci);

 	return 0;
 }

 subsys_initcall(ixdp2351_pci_init);

 /*
  * IXDP2351 Static Mapped I/O
  */
 static struct map_desc ixdp2351_io_desc[] __initdata = {
 	{
 		.virtual	= IXDP2351_NP_VIRT_BASE,
 		.pfn		= __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
 		.length		= IXDP2351_NP_PHYS_SIZE,
 		.type		= MT_DEVICE
 	}, {
 		.virtual	= IXDP2351_BB_BASE_VIRT,
 		.pfn		= __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
 		.length		= IXDP2351_BB_SIZE,
 		.type		= MT_DEVICE
 	}
 };

 static void __init ixdp2351_map_io(void)
 {
 	ixp23xx_map_io();
 	iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
 }

 static struct physmap_flash_data ixdp2351_flash_data = {
 	.width		= 1,
 };

 static struct resource ixdp2351_flash_resource = {
 	.start		= 0x90000000,
 	.end		= 0x93ffffff,
 	.flags		= IORESOURCE_MEM,
 };

 static struct platform_device ixdp2351_flash = {
 	.name		= "physmap-flash",
 	.id		= 0,
 	.dev		= {
 		.platform_data	= &ixdp2351_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &ixdp2351_flash_resource,
 };

 static void __init ixdp2351_init(void)
 {
 	platform_device_register(&ixdp2351_flash);

 	/*
 	 * Mark flash as writeable
 	 */
 	IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
 	IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
 	IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
 	IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;

 	ixp23xx_sys_init();
 }

 MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_io	= IXP23XX_PERIPHERAL_PHYS,
 	.io_pg_offst	= ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
 	.map_io		= ixdp2351_map_io,
 	.init_irq	= ixdp2351_init_irq,
 	.timer		= &ixp23xx_timer,
 	.boot_params	= 0x00000100,
 	.init_machine	= ixdp2351_init,
 MACHINE_END
	/*
	* arch/arm/mach-ixp23xx/ixdp2351.c
	*
	* IXDP2351 board-specific routines
	*
	* Author: Deepak Saxena <dsaxena@plexity.net>
	*
	* Copyright 2005 (c) MontaVista Software, Inc.
	*
	* Based on 2.4 code Copyright 2004 (c) Intel Corporation
	*
	* This file is licensed under the terms of the GNU General Public
	* License version 2. This program is licensed "as is" without any
	* warranty of any kind, whether express or implied.
	*/

	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/spinlock.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/irq.h>
	#include <linux/serial.h>
	#include <linux/tty.h>
	#include <linux/bitops.h>
	#include <linux/ioport.h>
	#include <linux/serial_8250.h>
	#include <linux/serial_core.h>
	#include <linux/device.h>
	#include <linux/mm.h>
	#include <linux/pci.h>
	#include <linux/mtd/physmap.h>

	#include <asm/types.h>
	#include <asm/setup.h>
	#include <asm/memory.h>
	#include <mach/hardware.h>
	#include <asm/mach-types.h>
	#include <asm/system.h>
	#include <asm/tlbflush.h>
	#include <asm/pgtable.h>

	#include <asm/mach/map.h>
	#include <asm/mach/irq.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/pci.h>

	/*
	* IXDP2351 Interrupt Handling
	*/
	static void ixdp2351_inta_mask(unsigned int irq)
	{
	*IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(irq);
	}

	static void ixdp2351_inta_unmask(unsigned int irq)
	{
	*IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
	}

	static void ixdp2351_inta_handler(unsigned int irq, struct irq_desc *desc)
	{
	u16 ex_interrupt =
	*IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
	int i;

	desc->chip->mask(irq);

	for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
	if (ex_interrupt & (1 << i)) {
	struct irq_desc *cpld_desc;
	int cpld_irq =
	IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
	cpld_desc = irq_desc + cpld_irq;
	desc_handle_irq(cpld_irq, cpld_desc);
	}
	}

	desc->chip->unmask(irq);
	}

	static struct irq_chip ixdp2351_inta_chip = {
	.ack = ixdp2351_inta_mask,
	.mask = ixdp2351_inta_mask,
	.unmask = ixdp2351_inta_unmask
	};

	static void ixdp2351_intb_mask(unsigned int irq)
	{
	*IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(irq);
	}

	static void ixdp2351_intb_unmask(unsigned int irq)
	{
	*IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
	}

	static void ixdp2351_intb_handler(unsigned int irq, struct irq_desc *desc)
	{
	u16 ex_interrupt =
	*IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
	int i;

	desc->chip->ack(irq);

	for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
	if (ex_interrupt & (1 << i)) {
	struct irq_desc *cpld_desc;
	int cpld_irq =
	IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
	cpld_desc = irq_desc + cpld_irq;
	desc_handle_irq(cpld_irq, cpld_desc);
	}
	}

	desc->chip->unmask(irq);
	}

	static struct irq_chip ixdp2351_intb_chip = {
	.ack = ixdp2351_intb_mask,
	.mask = ixdp2351_intb_mask,
	.unmask = ixdp2351_intb_unmask
	};

	void __init ixdp2351_init_irq(void)
	{
	int irq;

	/* Mask all interrupts from CPLD, disable simulation */
	*IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
	*IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
	*IXDP2351_CPLD_INTA_SIM_REG = 0;
	*IXDP2351_CPLD_INTB_SIM_REG = 0;

	ixp23xx_init_irq();

	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
	irq <
	IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
	irq++) {
	if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
	set_irq_flags(irq, IRQF_VALID);
	set_irq_handler(irq, handle_level_irq);
	set_irq_chip(irq, &ixdp2351_inta_chip);
	}
	}

	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
	irq <
	IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
	irq++) {
	if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
	set_irq_flags(irq, IRQF_VALID);
	set_irq_handler(irq, handle_level_irq);
	set_irq_chip(irq, &ixdp2351_intb_chip);
	}
	}

	set_irq_chained_handler(IRQ_IXP23XX_INTA, ixdp2351_inta_handler);
	set_irq_chained_handler(IRQ_IXP23XX_INTB, ixdp2351_intb_handler);
	}

	/*
	* IXDP2351 PCI
	*/

	/*
	* This board does not do normal PCI IRQ routing, or any
	* sort of swizzling, so we just need to check where on the
	* bus the device is and figure out what CPLD pin it is
	* being routed to.
	*/
	#define DEVPIN(dev, pin) ((pin) \| ((dev) << 3))

	static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	{
	u8 bus = dev->bus->number;
	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
	struct pci_bus *tmp_bus = dev->bus;

	/* Primary bus, no interrupts here */
	if (!bus)
	return -1;

	/* Lookup first leaf in bus tree */
	while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
	tmp_bus = tmp_bus->parent;

	/* Select between known bridges */
	switch (tmp_bus->self->devfn \| (tmp_bus->self->bus->number << 8)) {
	/* Device is located after first bridge */
	case 0x0008:
	if (tmp_bus == dev->bus) {
	/* Device is located directy after first bridge */
	switch (devpin) {
	/* Onboard 82546 */
	case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
	return IRQ_IXDP2351_INTA_82546;
	case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
	return IRQ_IXDP2351_INTB_82546;
	/* PMC SLOT */
	case DEVPIN(0, 1): /* PMCP INTA# */
	case DEVPIN(2, 4): /* PMCS INTD# */
	return IRQ_IXDP2351_SPCI_PMC_INTA;
	case DEVPIN(0, 2): /* PMCP INTB# */
	case DEVPIN(2, 1): /* PMCS INTA# */
	return IRQ_IXDP2351_SPCI_PMC_INTB;
	case DEVPIN(0, 3): /* PMCP INTC# */
	case DEVPIN(2, 2): /* PMCS INTB# */
	return IRQ_IXDP2351_SPCI_PMC_INTC;
	case DEVPIN(0, 4): /* PMCP INTD# */
	case DEVPIN(2, 3): /* PMCS INTC# */
	return IRQ_IXDP2351_SPCI_PMC_INTD;
	}
	} else {
	/* Device is located indirectly after first bridge */
	/* Not supported now */
	return -1;
	}
	break;
	case 0x0010:
	if (tmp_bus == dev->bus) {
	/* Device is located directy after second bridge */
	/* Secondary bus of second bridge */
	switch (devpin) {
	case DEVPIN(0, 1): /* DB#0 */
	case DEVPIN(0, 2):
	case DEVPIN(0, 3):
	case DEVPIN(0, 4):
	return IRQ_IXDP2351_SPCI_DB_0;
	case DEVPIN(1, 1): /* DB#1 */
	case DEVPIN(1, 2):
	case DEVPIN(1, 3):
	case DEVPIN(1, 4):
	return IRQ_IXDP2351_SPCI_DB_1;
	case DEVPIN(2, 1): /* FIC1 */
	case DEVPIN(2, 2):
	case DEVPIN(2, 3):
	case DEVPIN(2, 4):
	case DEVPIN(3, 1): /* FIC2 */
	case DEVPIN(3, 2):
	case DEVPIN(3, 3):
	case DEVPIN(3, 4):
	return IRQ_IXDP2351_SPCI_FIC;
	}
	} else {
	/* Device is located indirectly after second bridge */
	/* Not supported now */
	return -1;
	}
	break;
	}

	return -1;
	}

	struct hw_pci ixdp2351_pci __initdata = {
	.nr_controllers = 1,
	.preinit = ixp23xx_pci_preinit,
	.setup = ixp23xx_pci_setup,
	.scan = ixp23xx_pci_scan_bus,
	.map_irq = ixdp2351_map_irq,
	};

	int __init ixdp2351_pci_init(void)
	{
	if (machine_is_ixdp2351())
	pci_common_init(&ixdp2351_pci);

	return 0;
	}

	subsys_initcall(ixdp2351_pci_init);

	/*
	* IXDP2351 Static Mapped I/O
	*/
	static struct map_desc ixdp2351_io_desc[] __initdata = {
	{
	.virtual = IXDP2351_NP_VIRT_BASE,
	.pfn = __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
	.length = IXDP2351_NP_PHYS_SIZE,
	.type = MT_DEVICE
	}, {
	.virtual = IXDP2351_BB_BASE_VIRT,
	.pfn = __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
	.length = IXDP2351_BB_SIZE,
	.type = MT_DEVICE
	}
	};

	static void __init ixdp2351_map_io(void)
	{
	ixp23xx_map_io();
	iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
	}

	static struct physmap_flash_data ixdp2351_flash_data = {
	.width = 1,
	};

	static struct resource ixdp2351_flash_resource = {
	.start = 0x90000000,
	.end = 0x93ffffff,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device ixdp2351_flash = {
	.name = "physmap-flash",
	.id = 0,
	.dev = {
	.platform_data = &ixdp2351_flash_data,
	},
	.num_resources = 1,
	.resource = &ixdp2351_flash_resource,
	};

	static void __init ixdp2351_init(void)
	{
	platform_device_register(&ixdp2351_flash);

	/*
	* Mark flash as writeable
	*/
	IXP23XX_EXP_CS0[0] \|= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[1] \|= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[2] \|= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[3] \|= IXP23XX_FLASH_WRITABLE;

	ixp23xx_sys_init();
	}

	MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_io = IXP23XX_PERIPHERAL_PHYS,
	.io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
	.map_io = ixdp2351_map_io,
	.init_irq = ixdp2351_init_irq,
	.timer = &ixp23xx_timer,
	.boot_params = 0x00000100,
	.init_machine = ixdp2351_init,
	MACHINE_END