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linux/arch/arm/mach-imx/mach-mx31moboard.c
Russell King 716a3dc200 ARM: Add arm_memblock_steal() to allocate memory away from the kernel 
Several platforms are now using the memblock_alloc+memblock_free+
memblock_remove trick to obtain memory which won't be mapped in the
kernel's page tables.  Most platforms do this (correctly) in the
->reserve callback.  However, OMAP has started to call these functions
outside of this callback, and this is extremely unsafe - memory will
not be unmapped, and could well be given out after memblock is no
longer responsible for its management.

So, provide arm_memblock_steal() to perform this function, and ensure
that it panic()s if it is used inappropriately.  Convert everyone
over, including OMAP.

As a result, OMAP with OMAP4_ERRATA_I688 enabled will panic on boot
with this change.  Mark this option as BROKEN and make it depend on
BROKEN.  OMAP needs to be fixed, or 137d105d50 (ARM: OMAP4: Fix
errata i688 with MPU interconnect barriers.) reverted until such
time it can be fixed correctly.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-01-13 15:02:35 +00:00

604 lines
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/*
* Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/gfp.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <linux/leds.h>
#include <linux/memory.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/partitions.h>
#include <linux/platform_device.h>
#include <linux/regulator/machine.h>
#include <linux/mfd/mc13783.h>
#include <linux/spi/spi.h>
#include <linux/types.h>
#include <linux/memblock.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/err.h>
#include <linux/input.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <asm/memblock.h>
#include <mach/board-mx31moboard.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx3.h>
#include <mach/ulpi.h>
#include "devices-imx31.h"
static unsigned int moboard_pins[] = {
/* UART0 */
MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1,
MX31_PIN_CTS1__GPIO2_7,
/* UART4 */
MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5,
MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5,
/* I2C0 */
MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL,
/* I2C1 */
MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL,
/* SDHC1 */
MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2,
MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0,
MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD,
MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27,
/* USB reset */
MX31_PIN_GPIO1_0__GPIO1_0,
/* USB OTG */
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
MX31_PIN_USBOTG_CLK__USBOTG_CLK, MX31_PIN_USBOTG_DIR__USBOTG_DIR,
MX31_PIN_USBOTG_NXT__USBOTG_NXT, MX31_PIN_USBOTG_STP__USBOTG_STP,
MX31_PIN_USB_OC__GPIO1_30,
/* USB H2 */
MX31_PIN_USBH2_DATA0__USBH2_DATA0,
MX31_PIN_USBH2_DATA1__USBH2_DATA1,
MX31_PIN_STXD3__USBH2_DATA2, MX31_PIN_SRXD3__USBH2_DATA3,
MX31_PIN_SCK3__USBH2_DATA4, MX31_PIN_SFS3__USBH2_DATA5,
MX31_PIN_STXD6__USBH2_DATA6, MX31_PIN_SRXD6__USBH2_DATA7,
MX31_PIN_USBH2_CLK__USBH2_CLK, MX31_PIN_USBH2_DIR__USBH2_DIR,
MX31_PIN_USBH2_NXT__USBH2_NXT, MX31_PIN_USBH2_STP__USBH2_STP,
MX31_PIN_SCK6__GPIO1_25,
/* LEDs */
MX31_PIN_SVEN0__GPIO2_0, MX31_PIN_STX0__GPIO2_1,
MX31_PIN_SRX0__GPIO2_2, MX31_PIN_SIMPD0__GPIO2_3,
/* SPI1 */
MX31_PIN_CSPI2_MOSI__MOSI, MX31_PIN_CSPI2_MISO__MISO,
MX31_PIN_CSPI2_SCLK__SCLK, MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
MX31_PIN_CSPI2_SS0__SS0, MX31_PIN_CSPI2_SS2__SS2,
/* Atlas IRQ */
MX31_PIN_GPIO1_3__GPIO1_3,
/* SPI2 */
MX31_PIN_CSPI3_MOSI__MOSI, MX31_PIN_CSPI3_MISO__MISO,
MX31_PIN_CSPI3_SCLK__SCLK, MX31_PIN_CSPI3_SPI_RDY__SPI_RDY,
MX31_PIN_CSPI2_SS1__CSPI3_SS1,
};
static struct physmap_flash_data mx31moboard_flash_data = {
.width = 2,
};
static struct resource mx31moboard_flash_resource = {
.start = 0xa0000000,
.end = 0xa1ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device mx31moboard_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &mx31moboard_flash_data,
},
.resource = &mx31moboard_flash_resource,
.num_resources = 1,
};
static int moboard_uart0_init(struct platform_device *pdev)
{
int ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_CTS1), "uart0-cts-hack");
if (ret)
return ret;
ret = gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CTS1), 0);
if (ret)
gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
return ret;
}
static void moboard_uart0_exit(struct platform_device *pdev)
{
gpio_free(IOMUX_TO_GPIO(MX31_PIN_CTS1));
}
static const struct imxuart_platform_data uart0_pdata __initconst = {
.init = moboard_uart0_init,
.exit = moboard_uart0_exit,
};
static const struct imxuart_platform_data uart4_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static const struct imxi2c_platform_data moboard_i2c0_data __initconst = {
.bitrate = 400000,
};
static const struct imxi2c_platform_data moboard_i2c1_data __initconst = {
.bitrate = 100000,
};
static int moboard_spi1_cs[] = {
MXC_SPI_CS(0),
MXC_SPI_CS(2),
};
static const struct spi_imx_master moboard_spi1_pdata __initconst = {
.chipselect = moboard_spi1_cs,
.num_chipselect = ARRAY_SIZE(moboard_spi1_cs),
};
static struct regulator_consumer_supply sdhc_consumers[] = {
{
.dev_name = "mxc-mmc.0",
.supply = "sdhc0_vcc",
},
{
.dev_name = "mxc-mmc.1",
.supply = "sdhc1_vcc",
},
};
static struct regulator_init_data sdhc_vreg_data = {
.constraints = {
.min_uV = 2700000,
.max_uV = 3000000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
.valid_modes_mask = REGULATOR_MODE_NORMAL |
REGULATOR_MODE_FAST,
.always_on = 0,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(sdhc_consumers),
.consumer_supplies = sdhc_consumers,
};
static struct regulator_consumer_supply cam_consumers[] = {
{
.dev_name = "mx3_camera.0",
.supply = "cam_vcc",
},
};
static struct regulator_init_data cam_vreg_data = {
.constraints = {
.min_uV = 2700000,
.max_uV = 3000000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_MODE | REGULATOR_CHANGE_STATUS,
.valid_modes_mask = REGULATOR_MODE_NORMAL |
REGULATOR_MODE_FAST,
.always_on = 0,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(cam_consumers),
.consumer_supplies = cam_consumers,
};
static struct mc13xxx_regulator_init_data moboard_regulators[] = {
{
.id = MC13783_REG_VMMC1,
.init_data = &sdhc_vreg_data,
},
{
.id = MC13783_REG_VCAM,
.init_data = &cam_vreg_data,
},
};
static struct mc13xxx_led_platform_data moboard_led[] = {
{
.id = MC13783_LED_R1,
.name = "coreboard-led-4:red",
.max_current = 2,
},
{
.id = MC13783_LED_G1,
.name = "coreboard-led-4:green",
.max_current = 2,
},
{
.id = MC13783_LED_B1,
.name = "coreboard-led-4:blue",
.max_current = 2,
},
{
.id = MC13783_LED_R2,
.name = "coreboard-led-5:red",
.max_current = 3,
},
{
.id = MC13783_LED_G2,
.name = "coreboard-led-5:green",
.max_current = 3,
},
{
.id = MC13783_LED_B2,
.name = "coreboard-led-5:blue",
.max_current = 3,
},
};
static struct mc13xxx_leds_platform_data moboard_leds = {
.num_leds = ARRAY_SIZE(moboard_led),
.led = moboard_led,
.flags = MC13783_LED_SLEWLIMTC,
.abmode = MC13783_LED_AB_DISABLED,
.tc1_period = MC13783_LED_PERIOD_10MS,
.tc2_period = MC13783_LED_PERIOD_10MS,
};
static struct mc13xxx_buttons_platform_data moboard_buttons = {
.b1on_flags = MC13783_BUTTON_DBNC_750MS | MC13783_BUTTON_ENABLE |
MC13783_BUTTON_POL_INVERT,
.b1on_key = KEY_POWER,
};
static struct mc13xxx_platform_data moboard_pmic = {
.regulators = {
.regulators = moboard_regulators,
.num_regulators = ARRAY_SIZE(moboard_regulators),
},
.leds = &moboard_leds,
.buttons = &moboard_buttons,
.flags = MC13XXX_USE_RTC | MC13XXX_USE_ADC,
};
static struct spi_board_info moboard_spi_board_info[] __initdata = {
{
.modalias = "mc13783",
.irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
.max_speed_hz = 300000,
.bus_num = 1,
.chip_select = 0,
.platform_data = &moboard_pmic,
.mode = SPI_CS_HIGH,
},
};
static int moboard_spi2_cs[] = {
MXC_SPI_CS(1),
};
static const struct spi_imx_master moboard_spi2_pdata __initconst = {
.chipselect = moboard_spi2_cs,
.num_chipselect = ARRAY_SIZE(moboard_spi2_cs),
};
#define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0)
#define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1)
static int moboard_sdhc1_get_ro(struct device *dev)
{
return !gpio_get_value(SDHC1_WP);
}
static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = gpio_request(SDHC1_CD, "sdhc-detect");
if (ret)
return ret;
gpio_direction_input(SDHC1_CD);
ret = gpio_request(SDHC1_WP, "sdhc-wp");
if (ret)
goto err_gpio_free;
gpio_direction_input(SDHC1_WP);
ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"sdhc1-card-detect", data);
if (ret)
goto err_gpio_free_2;
return 0;
err_gpio_free_2:
gpio_free(SDHC1_WP);
err_gpio_free:
gpio_free(SDHC1_CD);
return ret;
}
static void moboard_sdhc1_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(SDHC1_CD), data);
gpio_free(SDHC1_WP);
gpio_free(SDHC1_CD);
}
static const struct imxmmc_platform_data sdhc1_pdata __initconst = {
.get_ro = moboard_sdhc1_get_ro,
.init = moboard_sdhc1_init,
.exit = moboard_sdhc1_exit,
};
/*
* this pin is dedicated for all mx31moboard systems, so we do it here
*/
#define USB_RESET_B IOMUX_TO_GPIO(MX31_PIN_GPIO1_0)
#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS)
#define OTG_EN_B IOMUX_TO_GPIO(MX31_PIN_USB_OC)
#define USBH2_EN_B IOMUX_TO_GPIO(MX31_PIN_SCK6)
static void usb_xcvr_reset(void)
{
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_gpr(MUX_PGP_UH2, true);
mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG | PAD_CTL_100K_PU);
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG | PAD_CTL_100K_PD);
gpio_request(OTG_EN_B, "usb-udc-en");
gpio_direction_output(OTG_EN_B, 0);
gpio_request(USBH2_EN_B, "usbh2-en");
gpio_direction_output(USBH2_EN_B, 0);
gpio_request(USB_RESET_B, "usb-reset");
gpio_direction_output(USB_RESET_B, 0);
mdelay(1);
gpio_set_value(USB_RESET_B, 1);
mdelay(1);
}
static int moboard_usbh2_init_hw(struct platform_device *pdev)
{
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
}
static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
.init = moboard_usbh2_init_hw,
.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};
static int __init moboard_usbh2_init(void)
{
struct platform_device *pdev;
usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (!usbh2_pdata.otg)
return -ENODEV;
pdev = imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
return 0;
}
static const struct gpio_led mx31moboard_leds[] __initconst = {
{
.name = "coreboard-led-0:red:running",
.default_trigger = "heartbeat",
.gpio = IOMUX_TO_GPIO(MX31_PIN_SVEN0),
}, {
.name = "coreboard-led-1:red",
.gpio = IOMUX_TO_GPIO(MX31_PIN_STX0),
}, {
.name = "coreboard-led-2:red",
.gpio = IOMUX_TO_GPIO(MX31_PIN_SRX0),
}, {
.name = "coreboard-led-3:red",
.gpio = IOMUX_TO_GPIO(MX31_PIN_SIMPD0),
},
};
static const struct gpio_led_platform_data mx31moboard_led_pdata __initconst = {
.num_leds = ARRAY_SIZE(mx31moboard_leds),
.leds = mx31moboard_leds,
};
static const struct ipu_platform_data mx3_ipu_data __initconst = {
.irq_base = MXC_IPU_IRQ_START,
};
static struct platform_device *devices[] __initdata = {
&mx31moboard_flash,
};
static struct mx3_camera_pdata camera_pdata __initdata = {
.flags = MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10,
.mclk_10khz = 4800,
};
static phys_addr_t mx3_camera_base __initdata;
#define MX3_CAMERA_BUF_SIZE SZ_4M
static int __init mx31moboard_init_cam(void)
{
int dma, ret = -ENOMEM;
struct platform_device *pdev;
imx31_add_ipu_core(&mx3_ipu_data);
pdev = imx31_alloc_mx3_camera(&camera_pdata);
if (IS_ERR(pdev))
return PTR_ERR(pdev);
dma = dma_declare_coherent_memory(&pdev->dev,
mx3_camera_base, mx3_camera_base,
MX3_CAMERA_BUF_SIZE,
DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
if (!(dma & DMA_MEMORY_MAP))
goto err;
ret = platform_device_add(pdev);
if (ret)
err:
platform_device_put(pdev);
return ret;
}
static void mx31moboard_poweroff(void)
{
struct clk *clk = clk_get_sys("imx2-wdt.0", NULL);
if (!IS_ERR(clk))
clk_enable(clk);
mxc_iomux_mode(MX31_PIN_WATCHDOG_RST__WATCHDOG_RST);
__raw_writew(1 << 6 | 1 << 2, MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR));
}
static int mx31moboard_baseboard;
core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444);
/*
* Board specific initialization.
*/
static void __init mx31moboard_init(void)
{
imx31_soc_init();
mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins),
"moboard");
platform_add_devices(devices, ARRAY_SIZE(devices));
gpio_led_register_device(-1, &mx31moboard_led_pdata);
imx31_add_imx_uart0(&uart0_pdata);
imx31_add_imx_uart4(&uart4_pdata);
imx31_add_imx_i2c0(&moboard_i2c0_data);
imx31_add_imx_i2c1(&moboard_i2c1_data);
imx31_add_spi_imx1(&moboard_spi1_pdata);
imx31_add_spi_imx2(&moboard_spi2_pdata);
gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3), "pmic-irq");
gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
spi_register_board_info(moboard_spi_board_info,
ARRAY_SIZE(moboard_spi_board_info));
imx31_add_mxc_mmc(0, &sdhc1_pdata);
mx31moboard_init_cam();
usb_xcvr_reset();
moboard_usbh2_init();
pm_power_off = mx31moboard_poweroff;
switch (mx31moboard_baseboard) {
case MX31NOBOARD:
break;
case MX31DEVBOARD:
mx31moboard_devboard_init();
break;
case MX31MARXBOT:
mx31moboard_marxbot_init();
break;
case MX31SMARTBOT:
case MX31EYEBOT:
mx31moboard_smartbot_init(mx31moboard_baseboard);
break;
default:
printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
mx31moboard_baseboard);
}
}
static void __init mx31moboard_timer_init(void)
{
mx31_clocks_init(26000000);
}
struct sys_timer mx31moboard_timer = {
.init = mx31moboard_timer_init,
};
static void __init mx31moboard_reserve(void)
{
/* reserve 4 MiB for mx3-camera */
mx3_camera_base = arm_memblock_steal(MX3_CAMERA_BUF_SIZE,
MX3_CAMERA_BUF_SIZE);
}
MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard")
/* Maintainer: Valentin Longchamp, EPFL Mobots group */
.atag_offset = 0x100,
.reserve = mx31moboard_reserve,
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.handle_irq = imx31_handle_irq,
.timer = &mx31moboard_timer,
.init_machine = mx31moboard_init,
.restart = mxc_restart,
MACHINE_END
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