arch/arm/mach-ixp2000/ixdp2x01.c - kernel/msm-4.19 - Gitiles

 /*
  * arch/arm/mach-ixp2000/ixdp2x01.c
  *
  * Code common to Intel IXDP2401 and IXDP2801 platforms
  *
  * Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
  *
  * Copyright (C) 2002-2003 Intel Corp.
  * Copyright (C) 2003-2004 MontaVista Software, Inc.
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
  *  Free Software Foundation;  either version 2 of the  License, or (at your
  *  option) any later version.
  */

 #include <linux/config.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_core.h>
 #include <linux/device.h>

 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/system.h>
 #include <asm/hardware.h>
 #include <asm/mach-types.h>

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

 /*************************************************************************
  * IXDP2x01 IRQ Handling
  *************************************************************************/
 static void ixdp2x01_irq_mask(unsigned int irq)
 {
 	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG,
 				IXP2000_BOARD_IRQ_MASK(irq));
 }

 static void ixdp2x01_irq_unmask(unsigned int irq)
 {
 	ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
 				IXP2000_BOARD_IRQ_MASK(irq));
 }

 static u32 valid_irq_mask;

 static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
 {
 	u32 ex_interrupt;
 	int i;

 	desc->chip->mask(irq);

 	ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;

 	if (!ex_interrupt) {
 		printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
 		return;
 	}

 	for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
 		if (ex_interrupt & (1 << i)) {
 			struct irqdesc *cpld_desc;
 			int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
 			cpld_desc = irq_desc + cpld_irq;
 			desc_handle_irq(cpld_irq, cpld_desc, regs);
 		}
 	}

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

 static struct irqchip ixdp2x01_irq_chip = {
 	.mask	= ixdp2x01_irq_mask,
 	.ack	= ixdp2x01_irq_mask,
 	.unmask	= ixdp2x01_irq_unmask
 };

 /*
  * We only do anything if we are the master NPU on the board.
  * The slave NPU only has the ethernet chip going directly to
  * the PCIB interrupt input.
  */
 void __init ixdp2x01_init_irq(void)
 {
 	int irq = 0;

 	/* initialize chip specific interrupts */
 	ixp2000_init_irq();

 	if (machine_is_ixdp2401())
 		valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
 	else
 		valid_irq_mask = IXDP2801_VALID_IRQ_MASK;

 	/* Mask all interrupts from CPLD, disable simulation */
 	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
 	ixp2000_reg_write(IXDP2X01_INT_SIM_REG, 0);

 	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
 		if (irq & valid_irq_mask) {
 			set_irq_chip(irq, &ixdp2x01_irq_chip);
 			set_irq_handler(irq, do_level_IRQ);
 			set_irq_flags(irq, IRQF_VALID);
 		} else {
 			set_irq_flags(irq, 0);
 		}
 	}

 	/* Hook into PCI interrupts */
 	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x01_irq_handler);
 }


 /*************************************************************************
  * IXDP2x01 memory map and serial ports
  *************************************************************************/
 static struct map_desc ixdp2x01_io_desc __initdata = {
 	.virtual	= IXDP2X01_VIRT_CPLD_BASE,
 	.physical	= IXDP2X01_PHYS_CPLD_BASE,
 	.length		= IXDP2X01_CPLD_REGION_SIZE,
 	.type		= MT_DEVICE
 };

 static struct uart_port ixdp2x01_serial_ports[2] = {
 	{
 		.membase	= (char *)(IXDP2X01_UART1_VIRT_BASE),
 		.mapbase	= (unsigned long)IXDP2X01_UART1_PHYS_BASE,
 		.irq		= IRQ_IXDP2X01_UART1,
 		.flags		= UPF_SKIP_TEST,
 		.iotype		= UPIO_MEM32,
 		.regshift	= 2,
 		.uartclk	= IXDP2X01_UART_CLK,
 		.line		= 1,
 		.type		= PORT_16550A,
 		.fifosize	= 16
 	}, {
 		.membase	= (char *)(IXDP2X01_UART2_VIRT_BASE),
 		.mapbase	= (unsigned long)IXDP2X01_UART2_PHYS_BASE,
 		.irq		= IRQ_IXDP2X01_UART2,
 		.flags		= UPF_SKIP_TEST,
 		.iotype		= UPIO_MEM32,
 		.regshift	= 2,
 		.uartclk	= IXDP2X01_UART_CLK,
 		.line		= 2,
 		.type		= PORT_16550A,
 		.fifosize	= 16
 	},
 };

 static void __init ixdp2x01_map_io(void)
 {
 	ixp2000_map_io();

 	iotable_init(&ixdp2x01_io_desc, 1);

 	early_serial_setup(&ixdp2x01_serial_ports[0]);
 	early_serial_setup(&ixdp2x01_serial_ports[1]);
 }


 /*************************************************************************
  * IXDP2x01 timer tick configuration
  *************************************************************************/
 static unsigned int ixdp2x01_clock;

 static int __init ixdp2x01_clock_setup(char *str)
 {
 	ixdp2x01_clock = simple_strtoul(str, NULL, 10);

 	return 1;
 }

 __setup("ixdp2x01_clock=", ixdp2x01_clock_setup);

 static void __init ixdp2x01_timer_init(void)
 {
 	if (!ixdp2x01_clock)
 		ixdp2x01_clock = 50000000;

 	ixp2000_init_time(ixdp2x01_clock);
 }

 static struct sys_timer ixdp2x01_timer = {
 	.init		= ixdp2x01_timer_init,
 	.offset		= ixp2000_gettimeoffset,
 };

 /*************************************************************************
  * IXDP2x01 PCI
  *************************************************************************/
 void __init ixdp2x01_pci_preinit(void)
 {
 	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
 	ixp2000_pci_preinit();
 }

 #define DEVPIN(dev, pin) ((pin) | ((dev) << 3))

 static int __init ixdp2x01_pci_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 == 0) {
 		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 MB bridge */
 	case 0x0008:
 		if (tmp_bus == dev->bus) {
 			/* Device is located directy after first MB bridge */
 			switch (devpin) {
 			case DEVPIN(1, 1):	/* Onboard 82546 ch 0 */
 				if (machine_is_ixdp2401())
 					return IRQ_IXDP2401_INTA_82546;
 				return -1;
 			case DEVPIN(1, 2):	/* Onboard 82546 ch 1 */
 				if (machine_is_ixdp2401())
 					return IRQ_IXDP2401_INTB_82546;
 				return -1;
 			case DEVPIN(0, 1):	/* PMC INTA# */
 				return IRQ_IXDP2X01_SPCI_PMC_INTA;
 			case DEVPIN(0, 2):	/* PMC INTB# */
 				return IRQ_IXDP2X01_SPCI_PMC_INTB;
 			case DEVPIN(0, 3):	/* PMC INTC# */
 				return IRQ_IXDP2X01_SPCI_PMC_INTC;
 			case DEVPIN(0, 4):	/* PMC INTD# */
 				return IRQ_IXDP2X01_SPCI_PMC_INTD;
 			}
 		}
 		break;
 	case 0x0010:
 		if (tmp_bus == dev->bus) {
 			/* Device is located directy after second MB bridge */
 			/* Secondary bus of second bridge */
 			switch (devpin) {
 			case DEVPIN(0, 1):	/* DB#0 */
 				return IRQ_IXDP2X01_SPCI_DB_0;
 			case DEVPIN(1, 1):	/* DB#1 */
 				return IRQ_IXDP2X01_SPCI_DB_1;
 			}
 		} else {
 			/* Device is located indirectly after second MB bridge */
 			/* Not supported now */
 		}
 		break;
 	}

 	return -1;
 }


 static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
 {
 	sys->mem_offset = 0xe0000000;

 	if (machine_is_ixdp2801())
 		sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);

 	return ixp2000_pci_setup(nr, sys);
 }

 struct hw_pci ixdp2x01_pci __initdata = {
 	.nr_controllers	= 1,
 	.setup		= ixdp2x01_pci_setup,
 	.preinit	= ixdp2x01_pci_preinit,
 	.scan		= ixp2000_pci_scan_bus,
 	.map_irq	= ixdp2x01_pci_map_irq,
 };

 int __init ixdp2x01_pci_init(void)
 {

 	pci_common_init(&ixdp2x01_pci);
 	return 0;
 }

 subsys_initcall(ixdp2x01_pci_init);

 /*************************************************************************
  * IXDP2x01 Machine Intialization
  *************************************************************************/
 static struct flash_platform_data ixdp2x01_flash_platform_data = {
 	.map_name	= "cfi_probe",
 	.width		= 1,
 };

 static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
 {
 	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
 		((ofs >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN));
 	return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
 }

 static struct ixp2000_flash_data ixdp2x01_flash_data = {
 	.platform_data	= &ixdp2x01_flash_platform_data,
 	.bank_setup	= ixdp2x01_flash_bank_setup
 };

 static struct resource ixdp2x01_flash_resource = {
 	.start		= 0xc4000000,
 	.end		= 0xc4000000 + 0x01ffffff,
 	.flags		= IORESOURCE_MEM,
 };

 static struct platform_device ixdp2x01_flash = {
 	.name		= "IXP2000-Flash",
 	.id		= 0,
 	.dev		= {
 		.platform_data = &ixdp2x01_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &ixdp2x01_flash_resource,
 };

 static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
 	.sda_pin	= IXDP2X01_GPIO_SDA,
 	.scl_pin	= IXDP2X01_GPIO_SCL,
 };

 static struct platform_device ixdp2x01_i2c_controller = {
 	.name		= "IXP2000-I2C",
 	.id		= 0,
 	.dev		= {
 		.platform_data = &ixdp2x01_i2c_gpio_pins,
 	},
 	.num_resources	= 0
 };

 static struct platform_device *ixdp2x01_devices[] __initdata = {
 	&ixdp2x01_flash,
 	&ixdp2x01_i2c_controller
 };

 static void __init ixdp2x01_init_machine(void)
 {
 	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
 		(IXDP2X01_CPLD_FLASH_BANK_MASK | IXDP2X01_CPLD_FLASH_INTERN));

 	ixdp2x01_flash_data.nr_banks =
 		((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);

 	platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
 	ixp2000_uart_init();
 }


 #ifdef CONFIG_ARCH_IXDP2401
 MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_ram	= 0x00000000,
 	.phys_io	= IXP2000_UART_PHYS_BASE,
 	.io_pg_offst	= ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.map_io		= ixdp2x01_map_io,
 	.init_irq	= ixdp2x01_init_irq,
 	.timer		= &ixdp2x01_timer,
 	.init_machine	= ixdp2x01_init_machine,
 MACHINE_END
 #endif

 #ifdef CONFIG_ARCH_IXDP2801
 MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
 	/* Maintainer: MontaVista Software, Inc. */
 	.phys_ram	= 0x00000000,
 	.phys_io	= IXP2000_UART_PHYS_BASE,
 	.io_pg_offst	= ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.map_io		= ixdp2x01_map_io,
 	.init_irq	= ixdp2x01_init_irq,
 	.timer		= &ixdp2x01_timer,
 	.init_machine	= ixdp2x01_init_machine,
 MACHINE_END
 #endif
	/*
	* arch/arm/mach-ixp2000/ixdp2x01.c
	*
	* Code common to Intel IXDP2401 and IXDP2801 platforms
	*
	* Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
	* Maintainer: Deepak Saxena <dsaxena@plexity.net>
	*
	* Copyright (C) 2002-2003 Intel Corp.
	* Copyright (C) 2003-2004 MontaVista Software, Inc.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/config.h>
	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/mm.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/bitops.h>
	#include <linux/pci.h>
	#include <linux/ioport.h>
	#include <linux/slab.h>
	#include <linux/delay.h>
	#include <linux/serial.h>
	#include <linux/tty.h>
	#include <linux/serial_core.h>
	#include <linux/device.h>

	#include <asm/io.h>
	#include <asm/irq.h>
	#include <asm/pgtable.h>
	#include <asm/page.h>
	#include <asm/system.h>
	#include <asm/hardware.h>
	#include <asm/mach-types.h>

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

	/*************************************************************************
	* IXDP2x01 IRQ Handling
	*************************************************************************/
	static void ixdp2x01_irq_mask(unsigned int irq)
	{
	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG,
	IXP2000_BOARD_IRQ_MASK(irq));
	}

	static void ixdp2x01_irq_unmask(unsigned int irq)
	{
	ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
	IXP2000_BOARD_IRQ_MASK(irq));
	}

	static u32 valid_irq_mask;

	static void ixdp2x01_irq_handler(unsigned int irq, struct irqdesc desc, struct pt_regs regs)
	{
	u32 ex_interrupt;
	int i;

	desc->chip->mask(irq);

	ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;

	if (!ex_interrupt) {
	printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
	return;
	}

	for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
	if (ex_interrupt & (1 << i)) {
	struct irqdesc *cpld_desc;
	int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
	cpld_desc = irq_desc + cpld_irq;
	desc_handle_irq(cpld_irq, cpld_desc, regs);
	}
	}

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

	static struct irqchip ixdp2x01_irq_chip = {
	.mask = ixdp2x01_irq_mask,
	.ack = ixdp2x01_irq_mask,
	.unmask = ixdp2x01_irq_unmask
	};

	/*
	* We only do anything if we are the master NPU on the board.
	* The slave NPU only has the ethernet chip going directly to
	* the PCIB interrupt input.
	*/
	void __init ixdp2x01_init_irq(void)
	{
	int irq = 0;

	/* initialize chip specific interrupts */
	ixp2000_init_irq();

	if (machine_is_ixdp2401())
	valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
	else
	valid_irq_mask = IXDP2801_VALID_IRQ_MASK;

	/* Mask all interrupts from CPLD, disable simulation */
	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
	ixp2000_reg_write(IXDP2X01_INT_SIM_REG, 0);

	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
	if (irq & valid_irq_mask) {
	set_irq_chip(irq, &ixdp2x01_irq_chip);
	set_irq_handler(irq, do_level_IRQ);
	set_irq_flags(irq, IRQF_VALID);
	} else {
	set_irq_flags(irq, 0);
	}
	}

	/* Hook into PCI interrupts */
	set_irq_chained_handler(IRQ_IXP2000_PCIB, &ixdp2x01_irq_handler);
	}


	/*************************************************************************
	* IXDP2x01 memory map and serial ports
	*************************************************************************/
	static struct map_desc ixdp2x01_io_desc __initdata = {
	.virtual = IXDP2X01_VIRT_CPLD_BASE,
	.physical = IXDP2X01_PHYS_CPLD_BASE,
	.length = IXDP2X01_CPLD_REGION_SIZE,
	.type = MT_DEVICE
	};

	static struct uart_port ixdp2x01_serial_ports[2] = {
	{
	.membase = (char *)(IXDP2X01_UART1_VIRT_BASE),
	.mapbase = (unsigned long)IXDP2X01_UART1_PHYS_BASE,
	.irq = IRQ_IXDP2X01_UART1,
	.flags = UPF_SKIP_TEST,
	.iotype = UPIO_MEM32,
	.regshift = 2,
	.uartclk = IXDP2X01_UART_CLK,
	.line = 1,
	.type = PORT_16550A,
	.fifosize = 16
	}, {
	.membase = (char *)(IXDP2X01_UART2_VIRT_BASE),
	.mapbase = (unsigned long)IXDP2X01_UART2_PHYS_BASE,
	.irq = IRQ_IXDP2X01_UART2,
	.flags = UPF_SKIP_TEST,
	.iotype = UPIO_MEM32,
	.regshift = 2,
	.uartclk = IXDP2X01_UART_CLK,
	.line = 2,
	.type = PORT_16550A,
	.fifosize = 16
	},
	};

	static void __init ixdp2x01_map_io(void)
	{
	ixp2000_map_io();

	iotable_init(&ixdp2x01_io_desc, 1);

	early_serial_setup(&ixdp2x01_serial_ports[0]);
	early_serial_setup(&ixdp2x01_serial_ports[1]);
	}


	/*************************************************************************
	* IXDP2x01 timer tick configuration
	*************************************************************************/
	static unsigned int ixdp2x01_clock;

	static int __init ixdp2x01_clock_setup(char *str)
	{
	ixdp2x01_clock = simple_strtoul(str, NULL, 10);

	return 1;
	}

	__setup("ixdp2x01_clock=", ixdp2x01_clock_setup);

	static void __init ixdp2x01_timer_init(void)
	{
	if (!ixdp2x01_clock)
	ixdp2x01_clock = 50000000;

	ixp2000_init_time(ixdp2x01_clock);
	}

	static struct sys_timer ixdp2x01_timer = {
	.init = ixdp2x01_timer_init,
	.offset = ixp2000_gettimeoffset,
	};

	/*************************************************************************
	* IXDP2x01 PCI
	*************************************************************************/
	void __init ixdp2x01_pci_preinit(void)
	{
	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
	ixp2000_pci_preinit();
	}

	#define DEVPIN(dev, pin) ((pin) \| ((dev) << 3))

	static int __init ixdp2x01_pci_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 == 0) {
	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 MB bridge */
	case 0x0008:
	if (tmp_bus == dev->bus) {
	/* Device is located directy after first MB bridge */
	switch (devpin) {
	case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
	if (machine_is_ixdp2401())
	return IRQ_IXDP2401_INTA_82546;
	return -1;
	case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
	if (machine_is_ixdp2401())
	return IRQ_IXDP2401_INTB_82546;
	return -1;
	case DEVPIN(0, 1): /* PMC INTA# */
	return IRQ_IXDP2X01_SPCI_PMC_INTA;
	case DEVPIN(0, 2): /* PMC INTB# */
	return IRQ_IXDP2X01_SPCI_PMC_INTB;
	case DEVPIN(0, 3): /* PMC INTC# */
	return IRQ_IXDP2X01_SPCI_PMC_INTC;
	case DEVPIN(0, 4): /* PMC INTD# */
	return IRQ_IXDP2X01_SPCI_PMC_INTD;
	}
	}
	break;
	case 0x0010:
	if (tmp_bus == dev->bus) {
	/* Device is located directy after second MB bridge */
	/* Secondary bus of second bridge */
	switch (devpin) {
	case DEVPIN(0, 1): /* DB#0 */
	return IRQ_IXDP2X01_SPCI_DB_0;
	case DEVPIN(1, 1): /* DB#1 */
	return IRQ_IXDP2X01_SPCI_DB_1;
	}
	} else {
	/* Device is located indirectly after second MB bridge */
	/* Not supported now */
	}
	break;
	}

	return -1;
	}


	static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
	{
	sys->mem_offset = 0xe0000000;

	if (machine_is_ixdp2801())
	sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);

	return ixp2000_pci_setup(nr, sys);
	}

	struct hw_pci ixdp2x01_pci __initdata = {
	.nr_controllers = 1,
	.setup = ixdp2x01_pci_setup,
	.preinit = ixdp2x01_pci_preinit,
	.scan = ixp2000_pci_scan_bus,
	.map_irq = ixdp2x01_pci_map_irq,
	};

	int __init ixdp2x01_pci_init(void)
	{

	pci_common_init(&ixdp2x01_pci);
	return 0;
	}

	subsys_initcall(ixdp2x01_pci_init);

	/*************************************************************************
	* IXDP2x01 Machine Intialization
	*************************************************************************/
	static struct flash_platform_data ixdp2x01_flash_platform_data = {
	.map_name = "cfi_probe",
	.width = 1,
	};

	static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
	{
	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
	((ofs >> IXDP2X01_FLASH_WINDOW_BITS) \| IXDP2X01_CPLD_FLASH_INTERN));
	return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
	}

	static struct ixp2000_flash_data ixdp2x01_flash_data = {
	.platform_data = &ixdp2x01_flash_platform_data,
	.bank_setup = ixdp2x01_flash_bank_setup
	};

	static struct resource ixdp2x01_flash_resource = {
	.start = 0xc4000000,
	.end = 0xc4000000 + 0x01ffffff,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device ixdp2x01_flash = {
	.name = "IXP2000-Flash",
	.id = 0,
	.dev = {
	.platform_data = &ixdp2x01_flash_data,
	},
	.num_resources = 1,
	.resource = &ixdp2x01_flash_resource,
	};

	static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
	.sda_pin = IXDP2X01_GPIO_SDA,
	.scl_pin = IXDP2X01_GPIO_SCL,
	};

	static struct platform_device ixdp2x01_i2c_controller = {
	.name = "IXP2000-I2C",
	.id = 0,
	.dev = {
	.platform_data = &ixdp2x01_i2c_gpio_pins,
	},
	.num_resources = 0
	};

	static struct platform_device *ixdp2x01_devices[] __initdata = {
	&ixdp2x01_flash,
	&ixdp2x01_i2c_controller
	};

	static void __init ixdp2x01_init_machine(void)
	{
	ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
	(IXDP2X01_CPLD_FLASH_BANK_MASK \| IXDP2X01_CPLD_FLASH_INTERN));

	ixdp2x01_flash_data.nr_banks =
	((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);

	platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
	ixp2000_uart_init();
	}


	#ifdef CONFIG_ARCH_IXDP2401
	MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_ram = 0x00000000,
	.phys_io = IXP2000_UART_PHYS_BASE,
	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params = 0x00000100,
	.map_io = ixdp2x01_map_io,
	.init_irq = ixdp2x01_init_irq,
	.timer = &ixdp2x01_timer,
	.init_machine = ixdp2x01_init_machine,
	MACHINE_END
	#endif

	#ifdef CONFIG_ARCH_IXDP2801
	MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_ram = 0x00000000,
	.phys_io = IXP2000_UART_PHYS_BASE,
	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params = 0x00000100,
	.map_io = ixdp2x01_map_io,
	.init_irq = ixdp2x01_init_irq,
	.timer = &ixdp2x01_timer,
	.init_machine = ixdp2x01_init_machine,
	MACHINE_END
	#endif