arch/arm/mach-orion/db88f5281-setup.c - LeafOS-Devices/android_kernel_realme_mt6785 - Gitiles

 /*
  * arch/arm/mach-orion/db88f5281-setup.c
  *
  * Marvell Orion-2 Development Board Setup
  *
  * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
  *
  * 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/platform_device.h>
 #include <linux/pci.h>
 #include <linux/irq.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/nand.h>
 #include <linux/timer.h>
 #include <linux/mv643xx_eth.h>
 #include <linux/i2c.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/pci.h>
 #include <asm/arch/orion.h>
 #include <asm/arch/platform.h>
 #include "common.h"

 /*****************************************************************************
  * DB-88F5281 on board devices
  ****************************************************************************/

 /*
  * 512K NOR flash Device bus boot chip select
  */

 #define DB88F5281_NOR_BOOT_BASE		0xf4000000
 #define DB88F5281_NOR_BOOT_SIZE		SZ_512K

 /*
  * 7-Segment on Device bus chip select 0
  */

 #define DB88F5281_7SEG_BASE		0xfa000000
 #define DB88F5281_7SEG_SIZE		SZ_1K

 /*
  * 32M NOR flash on Device bus chip select 1
  */

 #define DB88F5281_NOR_BASE		0xfc000000
 #define DB88F5281_NOR_SIZE		SZ_32M

 /*
  * 32M NAND flash on Device bus chip select 2
  */

 #define DB88F5281_NAND_BASE		0xfa800000
 #define DB88F5281_NAND_SIZE		SZ_1K

 /*
  * PCI
  */

 #define DB88F5281_PCI_SLOT0_OFFS		7
 #define DB88F5281_PCI_SLOT0_IRQ_PIN		12
 #define DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN	13

 /*****************************************************************************
  * 512M NOR Flash on Device bus Boot CS
  ****************************************************************************/

 static struct physmap_flash_data db88f5281_boot_flash_data = {
 	.width		= 1,	/* 8 bit bus width */
 };

 static struct resource db88f5281_boot_flash_resource = {
 	.flags		= IORESOURCE_MEM,
 	.start		= DB88F5281_NOR_BOOT_BASE,
 	.end		= DB88F5281_NOR_BOOT_BASE + DB88F5281_NOR_BOOT_SIZE - 1,
 };

 static struct platform_device db88f5281_boot_flash = {
 	.name		= "physmap-flash",
 	.id		= 0,
 	.dev		= {
 		.platform_data = &db88f5281_boot_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &db88f5281_boot_flash_resource,
 };

 /*****************************************************************************
  * 32M NOR Flash on Device bus CS1
  ****************************************************************************/

 static struct physmap_flash_data db88f5281_nor_flash_data = {
 	.width		= 4,	/* 32 bit bus width */
 };

 static struct resource db88f5281_nor_flash_resource = {
 	.flags		= IORESOURCE_MEM,
 	.start		= DB88F5281_NOR_BASE,
 	.end		= DB88F5281_NOR_BASE + DB88F5281_NOR_SIZE - 1,
 };

 static struct platform_device db88f5281_nor_flash = {
 	.name		= "physmap-flash",
 	.id		= 1,
 	.dev		= {
 		.platform_data = &db88f5281_nor_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &db88f5281_nor_flash_resource,
 };

 /*****************************************************************************
  * 32M NAND Flash on Device bus CS2
  ****************************************************************************/

 static struct mtd_partition db88f5281_nand_parts[] = {
 	{
 		.name = "kernel",
 		.offset = 0,
 		.size = SZ_2M,
 	},
 	{
 		.name = "root",
 		.offset = SZ_2M,
 		.size = (SZ_16M - SZ_2M),
 	},
 	{
 		.name = "user",
 		.offset = SZ_16M,
 		.size = SZ_8M,
 	},
 	{
 		.name = "recovery",
 		.offset = (SZ_16M + SZ_8M),
 		.size = SZ_8M,
 	},
 };

 static struct resource db88f5281_nand_resource = {
 	.flags		= IORESOURCE_MEM,
 	.start		= DB88F5281_NAND_BASE,
 	.end		= DB88F5281_NAND_BASE + DB88F5281_NAND_SIZE - 1,
 };

 static struct orion_nand_data db88f5281_nand_data = {
 	.parts		= db88f5281_nand_parts,
 	.nr_parts	= ARRAY_SIZE(db88f5281_nand_parts),
 	.cle		= 0,
 	.ale		= 1,
 	.width		= 8,
 };

 static struct platform_device db88f5281_nand_flash = {
 	.name		= "orion_nand",
 	.id		= -1,
 	.dev		= {
 		.platform_data	= &db88f5281_nand_data,
 	},
 	.resource	= &db88f5281_nand_resource,
 	.num_resources	= 1,
 };

 /*****************************************************************************
  * 7-Segment on Device bus CS0
  * Dummy counter every 2 sec
  ****************************************************************************/

 static void __iomem *db88f5281_7seg;
 static struct timer_list db88f5281_timer;

 static void db88f5281_7seg_event(unsigned long data)
 {
 	static int count = 0;
 	writel(0, db88f5281_7seg + (count << 4));
 	count = (count + 1) & 7;
 	mod_timer(&db88f5281_timer, jiffies + 2 * HZ);
 }

 static int __init db88f5281_7seg_init(void)
 {
 	if (machine_is_db88f5281()) {
 		db88f5281_7seg = ioremap(DB88F5281_7SEG_BASE,
 					DB88F5281_7SEG_SIZE);
 		if (!db88f5281_7seg) {
 			printk(KERN_ERR "Failed to ioremap db88f5281_7seg\n");
 			return -EIO;
 		}
 		setup_timer(&db88f5281_timer, db88f5281_7seg_event, 0);
 		mod_timer(&db88f5281_timer, jiffies + 2 * HZ);
 	}

 	return 0;
 }

 __initcall(db88f5281_7seg_init);

 /*****************************************************************************
  * PCI
  ****************************************************************************/

 void __init db88f5281_pci_preinit(void)
 {
 	int pin;

 	/*
 	 * Configure PCI GPIO IRQ pins
 	 */
 	pin = DB88F5281_PCI_SLOT0_IRQ_PIN;
 	if (gpio_request(pin, "PCI Int1") == 0) {
 		if (gpio_direction_input(pin) == 0) {
 			set_irq_type(gpio_to_irq(pin), IRQT_LOW);
 		} else {
 			printk(KERN_ERR "db88f5281_pci_preinit faield to "
 					"set_irq_type pin %d\n", pin);
 			gpio_free(pin);
 		}
 	} else {
 		printk(KERN_ERR "db88f5281_pci_preinit failed to gpio_request %d\n", pin);
 	}

 	pin = DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN;
 	if (gpio_request(pin, "PCI Int2") == 0) {
 		if (gpio_direction_input(pin) == 0) {
 			set_irq_type(gpio_to_irq(pin), IRQT_LOW);
 		} else {
 			printk(KERN_ERR "db88f5281_pci_preinit faield "
 					"to set_irq_type pin %d\n", pin);
 			gpio_free(pin);
 		}
 	} else {
 		printk(KERN_ERR "db88f5281_pci_preinit failed to gpio_request %d\n", pin);
 	}
 }

 static int __init db88f5281_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 {
 	/*
 	 * PCIE IRQ is connected internally (not GPIO)
 	 */
 	if (dev->bus->number == orion_pcie_local_bus_nr())
 		return IRQ_ORION_PCIE0_INT;

 	/*
 	 * PCI IRQs are connected via GPIOs
 	 */
 	switch (slot - DB88F5281_PCI_SLOT0_OFFS) {
 	case 0:
 		return gpio_to_irq(DB88F5281_PCI_SLOT0_IRQ_PIN);
 	case 1:
 	case 2:
 		return gpio_to_irq(DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN);
 	default:
 		return -1;
 	}
 }

 static struct hw_pci db88f5281_pci __initdata = {
 	.nr_controllers	= 2,
 	.preinit	= db88f5281_pci_preinit,
 	.swizzle	= pci_std_swizzle,
 	.setup		= orion_pci_sys_setup,
 	.scan		= orion_pci_sys_scan_bus,
 	.map_irq	= db88f5281_pci_map_irq,
 };

 static int __init db88f5281_pci_init(void)
 {
 	if (machine_is_db88f5281())
 		pci_common_init(&db88f5281_pci);

 	return 0;
 }

 subsys_initcall(db88f5281_pci_init);

 /*****************************************************************************
  * Ethernet
  ****************************************************************************/
 static struct mv643xx_eth_platform_data db88f5281_eth_data = {
 	.phy_addr	= 8,
 	.force_phy_addr = 1,
 };

 /*****************************************************************************
  * RTC DS1339 on I2C bus
  ****************************************************************************/
 static struct i2c_board_info __initdata db88f5281_i2c_rtc = {
 	.driver_name	= "rtc-ds1307",
 	.type		= "ds1339",
 	.addr		= 0x68,
 };

 /*****************************************************************************
  * General Setup
  ****************************************************************************/

 static struct platform_device *db88f5281_devs[] __initdata = {
 	&db88f5281_boot_flash,
 	&db88f5281_nor_flash,
 	&db88f5281_nand_flash,
 };

 static void __init db88f5281_init(void)
 {
 	/*
 	 * Basic Orion setup. Need to be called early.
 	 */
 	orion_init();

 	/*
 	 * Setup the CPU address decode windows for our on-board devices
 	 */
 	orion_setup_cpu_win(ORION_DEV_BOOT, DB88F5281_NOR_BOOT_BASE,
 				DB88F5281_NOR_BOOT_SIZE, -1);
 	orion_setup_cpu_win(ORION_DEV0,	DB88F5281_7SEG_BASE,
 				DB88F5281_7SEG_SIZE, -1);
 	orion_setup_cpu_win(ORION_DEV1, DB88F5281_NOR_BASE,
 				DB88F5281_NOR_SIZE, -1);
 	orion_setup_cpu_win(ORION_DEV2,	DB88F5281_NAND_BASE,
 				DB88F5281_NAND_SIZE, -1);

 	/*
 	 * Setup Multiplexing Pins:
 	 * MPP0: GPIO (USB Over Current)	MPP1: GPIO (USB Vbat input)
 	 * MPP2: PCI_REQn[2]			MPP3: PCI_GNTn[2]
 	 * MPP4: PCI_REQn[3]			MPP5: PCI_GNTn[3]
 	 * MPP6: GPIO (JP0, CON17.2)		MPP7: GPIO (JP1, CON17.1)
 	 * MPP8: GPIO (JP2, CON11.2)		MPP9: GPIO (JP3, CON11.3)
 	 * MPP10: GPIO (RTC int)		MPP11: GPIO (Baud Rate Generator)
 	 * MPP12: GPIO (PCI int 1)		MPP13: GPIO (PCI int 2)
 	 * MPP14: NAND_REn[2]			MPP15: NAND_WEn[2]
 	 * MPP16: UART1_RX			MPP17: UART1_TX
 	 * MPP18: UART1_CTS			MPP19: UART1_RTS
 	 * MPP-DEV: DEV_D[16:31]
 	 */
 	orion_write(MPP_0_7_CTRL, 0x00222203);
 	orion_write(MPP_8_15_CTRL, 0x44000000);
 	orion_write(MPP_16_19_CTRL, 0);
 	orion_write(MPP_DEV_CTRL, 0);

 	orion_gpio_set_valid_pins(0x00003fc3);

 	platform_add_devices(db88f5281_devs, ARRAY_SIZE(db88f5281_devs));
 	i2c_register_board_info(0, &db88f5281_i2c_rtc, 1);
 	orion_eth_init(&db88f5281_eth_data);
 }

 MACHINE_START(DB88F5281, "Marvell Orion-2 Development Board")
 	/* Maintainer: Tzachi Perelstein <tzachi@marvell.com> */
 	.phys_io	= ORION_REGS_BASE,
 	.io_pg_offst	= ((ORION_REGS_BASE) >> 18) & 0xfffc,
 	.boot_params	= 0x00000100,
 	.init_machine	= db88f5281_init,
 	.map_io		= orion_map_io,
 	.init_irq	= orion_init_irq,
 	.timer		= &orion_timer,
 MACHINE_END
	/*
	* arch/arm/mach-orion/db88f5281-setup.c
	*
	* Marvell Orion-2 Development Board Setup
	*
	* Maintainer: Tzachi Perelstein <tzachi@marvell.com>
	*
	* 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/platform_device.h>
	#include <linux/pci.h>
	#include <linux/irq.h>
	#include <linux/mtd/physmap.h>
	#include <linux/mtd/nand.h>
	#include <linux/timer.h>
	#include <linux/mv643xx_eth.h>
	#include <linux/i2c.h>
	#include <asm/mach-types.h>
	#include <asm/gpio.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/pci.h>
	#include <asm/arch/orion.h>
	#include <asm/arch/platform.h>
	#include "common.h"

	/*****************************************************************************
	* DB-88F5281 on board devices
	****************************************************************************/

	/*
	* 512K NOR flash Device bus boot chip select
	*/

	#define DB88F5281_NOR_BOOT_BASE 0xf4000000
	#define DB88F5281_NOR_BOOT_SIZE SZ_512K

	/*
	* 7-Segment on Device bus chip select 0
	*/

	#define DB88F5281_7SEG_BASE 0xfa000000
	#define DB88F5281_7SEG_SIZE SZ_1K

	/*
	* 32M NOR flash on Device bus chip select 1
	*/

	#define DB88F5281_NOR_BASE 0xfc000000
	#define DB88F5281_NOR_SIZE SZ_32M

	/*
	* 32M NAND flash on Device bus chip select 2
	*/

	#define DB88F5281_NAND_BASE 0xfa800000
	#define DB88F5281_NAND_SIZE SZ_1K

	/*
	* PCI
	*/

	#define DB88F5281_PCI_SLOT0_OFFS 7
	#define DB88F5281_PCI_SLOT0_IRQ_PIN 12
	#define DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN 13

	/*****************************************************************************
	* 512M NOR Flash on Device bus Boot CS
	****************************************************************************/

	static struct physmap_flash_data db88f5281_boot_flash_data = {
	.width = 1, /* 8 bit bus width */
	};

	static struct resource db88f5281_boot_flash_resource = {
	.flags = IORESOURCE_MEM,
	.start = DB88F5281_NOR_BOOT_BASE,
	.end = DB88F5281_NOR_BOOT_BASE + DB88F5281_NOR_BOOT_SIZE - 1,
	};

	static struct platform_device db88f5281_boot_flash = {
	.name = "physmap-flash",
	.id = 0,
	.dev = {
	.platform_data = &db88f5281_boot_flash_data,
	},
	.num_resources = 1,
	.resource = &db88f5281_boot_flash_resource,
	};

	/*****************************************************************************
	* 32M NOR Flash on Device bus CS1
	****************************************************************************/

	static struct physmap_flash_data db88f5281_nor_flash_data = {
	.width = 4, /* 32 bit bus width */
	};

	static struct resource db88f5281_nor_flash_resource = {
	.flags = IORESOURCE_MEM,
	.start = DB88F5281_NOR_BASE,
	.end = DB88F5281_NOR_BASE + DB88F5281_NOR_SIZE - 1,
	};

	static struct platform_device db88f5281_nor_flash = {
	.name = "physmap-flash",
	.id = 1,
	.dev = {
	.platform_data = &db88f5281_nor_flash_data,
	},
	.num_resources = 1,
	.resource = &db88f5281_nor_flash_resource,
	};

	/*****************************************************************************
	* 32M NAND Flash on Device bus CS2
	****************************************************************************/

	static struct mtd_partition db88f5281_nand_parts[] = {
	{
	.name = "kernel",
	.offset = 0,
	.size = SZ_2M,
	},
	{
	.name = "root",
	.offset = SZ_2M,
	.size = (SZ_16M - SZ_2M),
	},
	{
	.name = "user",
	.offset = SZ_16M,
	.size = SZ_8M,
	},
	{
	.name = "recovery",
	.offset = (SZ_16M + SZ_8M),
	.size = SZ_8M,
	},
	};

	static struct resource db88f5281_nand_resource = {
	.flags = IORESOURCE_MEM,
	.start = DB88F5281_NAND_BASE,
	.end = DB88F5281_NAND_BASE + DB88F5281_NAND_SIZE - 1,
	};

	static struct orion_nand_data db88f5281_nand_data = {
	.parts = db88f5281_nand_parts,
	.nr_parts = ARRAY_SIZE(db88f5281_nand_parts),
	.cle = 0,
	.ale = 1,
	.width = 8,
	};

	static struct platform_device db88f5281_nand_flash = {
	.name = "orion_nand",
	.id = -1,
	.dev = {
	.platform_data = &db88f5281_nand_data,
	},
	.resource = &db88f5281_nand_resource,
	.num_resources = 1,
	};

	/*****************************************************************************
	* 7-Segment on Device bus CS0
	* Dummy counter every 2 sec
	****************************************************************************/

	static void __iomem *db88f5281_7seg;
	static struct timer_list db88f5281_timer;

	static void db88f5281_7seg_event(unsigned long data)
	{
	static int count = 0;
	writel(0, db88f5281_7seg + (count << 4));
	count = (count + 1) & 7;
	mod_timer(&db88f5281_timer, jiffies + 2 * HZ);
	}

	static int __init db88f5281_7seg_init(void)
	{
	if (machine_is_db88f5281()) {
	db88f5281_7seg = ioremap(DB88F5281_7SEG_BASE,
	DB88F5281_7SEG_SIZE);
	if (!db88f5281_7seg) {
	printk(KERN_ERR "Failed to ioremap db88f5281_7seg\n");
	return -EIO;
	}
	setup_timer(&db88f5281_timer, db88f5281_7seg_event, 0);
	mod_timer(&db88f5281_timer, jiffies + 2 * HZ);
	}

	return 0;
	}

	__initcall(db88f5281_7seg_init);

	/*****************************************************************************
	* PCI
	****************************************************************************/

	void __init db88f5281_pci_preinit(void)
	{
	int pin;

	/*
	* Configure PCI GPIO IRQ pins
	*/
	pin = DB88F5281_PCI_SLOT0_IRQ_PIN;
	if (gpio_request(pin, "PCI Int1") == 0) {
	if (gpio_direction_input(pin) == 0) {
	set_irq_type(gpio_to_irq(pin), IRQT_LOW);
	} else {
	printk(KERN_ERR "db88f5281_pci_preinit faield to "
	"set_irq_type pin %d\n", pin);
	gpio_free(pin);
	}
	} else {
	printk(KERN_ERR "db88f5281_pci_preinit failed to gpio_request %d\n", pin);
	}

	pin = DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN;
	if (gpio_request(pin, "PCI Int2") == 0) {
	if (gpio_direction_input(pin) == 0) {
	set_irq_type(gpio_to_irq(pin), IRQT_LOW);
	} else {
	printk(KERN_ERR "db88f5281_pci_preinit faield "
	"to set_irq_type pin %d\n", pin);
	gpio_free(pin);
	}
	} else {
	printk(KERN_ERR "db88f5281_pci_preinit failed to gpio_request %d\n", pin);
	}
	}

	static int __init db88f5281_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	{
	/*
	* PCIE IRQ is connected internally (not GPIO)
	*/
	if (dev->bus->number == orion_pcie_local_bus_nr())
	return IRQ_ORION_PCIE0_INT;

	/*
	* PCI IRQs are connected via GPIOs
	*/
	switch (slot - DB88F5281_PCI_SLOT0_OFFS) {
	case 0:
	return gpio_to_irq(DB88F5281_PCI_SLOT0_IRQ_PIN);
	case 1:
	case 2:
	return gpio_to_irq(DB88F5281_PCI_SLOT1_SLOT2_IRQ_PIN);
	default:
	return -1;
	}
	}

	static struct hw_pci db88f5281_pci __initdata = {
	.nr_controllers = 2,
	.preinit = db88f5281_pci_preinit,
	.swizzle = pci_std_swizzle,
	.setup = orion_pci_sys_setup,
	.scan = orion_pci_sys_scan_bus,
	.map_irq = db88f5281_pci_map_irq,
	};

	static int __init db88f5281_pci_init(void)
	{
	if (machine_is_db88f5281())
	pci_common_init(&db88f5281_pci);

	return 0;
	}

	subsys_initcall(db88f5281_pci_init);

	/*****************************************************************************
	* Ethernet
	****************************************************************************/
	static struct mv643xx_eth_platform_data db88f5281_eth_data = {
	.phy_addr = 8,
	.force_phy_addr = 1,
	};

	/*****************************************************************************
	* RTC DS1339 on I2C bus
	****************************************************************************/
	static struct i2c_board_info __initdata db88f5281_i2c_rtc = {
	.driver_name = "rtc-ds1307",
	.type = "ds1339",
	.addr = 0x68,
	};

	/*****************************************************************************
	* General Setup
	****************************************************************************/

	static struct platform_device *db88f5281_devs[] __initdata = {
	&db88f5281_boot_flash,
	&db88f5281_nor_flash,
	&db88f5281_nand_flash,
	};

	static void __init db88f5281_init(void)
	{
	/*
	* Basic Orion setup. Need to be called early.
	*/
	orion_init();

	/*
	* Setup the CPU address decode windows for our on-board devices
	*/
	orion_setup_cpu_win(ORION_DEV_BOOT, DB88F5281_NOR_BOOT_BASE,
	DB88F5281_NOR_BOOT_SIZE, -1);
	orion_setup_cpu_win(ORION_DEV0, DB88F5281_7SEG_BASE,
	DB88F5281_7SEG_SIZE, -1);
	orion_setup_cpu_win(ORION_DEV1, DB88F5281_NOR_BASE,
	DB88F5281_NOR_SIZE, -1);
	orion_setup_cpu_win(ORION_DEV2, DB88F5281_NAND_BASE,
	DB88F5281_NAND_SIZE, -1);

	/*
	* Setup Multiplexing Pins:
	* MPP0: GPIO (USB Over Current) MPP1: GPIO (USB Vbat input)
	* MPP2: PCI_REQn[2] MPP3: PCI_GNTn[2]
	* MPP4: PCI_REQn[3] MPP5: PCI_GNTn[3]
	* MPP6: GPIO (JP0, CON17.2) MPP7: GPIO (JP1, CON17.1)
	* MPP8: GPIO (JP2, CON11.2) MPP9: GPIO (JP3, CON11.3)
	* MPP10: GPIO (RTC int) MPP11: GPIO (Baud Rate Generator)
	* MPP12: GPIO (PCI int 1) MPP13: GPIO (PCI int 2)
	* MPP14: NAND_REn[2] MPP15: NAND_WEn[2]
	* MPP16: UART1_RX MPP17: UART1_TX
	* MPP18: UART1_CTS MPP19: UART1_RTS
	* MPP-DEV: DEV_D[16:31]
	*/
	orion_write(MPP_0_7_CTRL, 0x00222203);
	orion_write(MPP_8_15_CTRL, 0x44000000);
	orion_write(MPP_16_19_CTRL, 0);
	orion_write(MPP_DEV_CTRL, 0);

	orion_gpio_set_valid_pins(0x00003fc3);

	platform_add_devices(db88f5281_devs, ARRAY_SIZE(db88f5281_devs));
	i2c_register_board_info(0, &db88f5281_i2c_rtc, 1);
	orion_eth_init(&db88f5281_eth_data);
	}

	MACHINE_START(DB88F5281, "Marvell Orion-2 Development Board")
	/* Maintainer: Tzachi Perelstein <tzachi@marvell.com> */
	.phys_io = ORION_REGS_BASE,
	.io_pg_offst = ((ORION_REGS_BASE) >> 18) & 0xfffc,
	.boot_params = 0x00000100,
	.init_machine = db88f5281_init,
	.map_io = orion_map_io,
	.init_irq = orion_init_irq,
	.timer = &orion_timer,
	MACHINE_END