mainstone.c

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/*
 *  linux/arch/arm/mach-pxa/mainstone.c
 *
 *  Support for the Intel HCDDBBVA0 Development Platform.
 *  (go figure how they came up with such name...)
 *
 *  Author: Nicolas Pitre
 *  Created:    Nov 05, 2002
 *  Copyright:  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 version 2 as
 *  published by the Free Software Foundation.
 */
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/syscore_ops.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/fb.h>
#include <linux/ioport.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/input.h>
#include <linux/gpio_keys.h>
#include <linux/pwm_backlight.h>
#include <linux/smc91x.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/slab.h>
#include <linux/leds.h>

#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/sizes.h>

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

#include <mach/pxa27x.h>
#include <mach/mainstone.h>
#include <mach/audio.h>
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/irda-pxaficp.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/keypad-pxa27x.h>
#include <mach/smemc.h>

#include "generic.h"
#include "devices.h"

static unsigned long mainstone_pin_config[] = {
    /* Chip Select */
    GPIO15_nCS_1,

    /* LCD - 16bpp Active TFT */
    GPIOxx_LCD_TFT_16BPP,
    GPIO16_PWM0_OUT,    /* Backlight */

    /* MMC */
    GPIO32_MMC_CLK,
    GPIO112_MMC_CMD,
    GPIO92_MMC_DAT_0,
    GPIO109_MMC_DAT_1,
    GPIO110_MMC_DAT_2,
    GPIO111_MMC_DAT_3,

    /* USB Host Port 1 */
    GPIO88_USBH1_PWR,
    GPIO89_USBH1_PEN,

    /* PC Card */
    GPIO48_nPOE,
    GPIO49_nPWE,
    GPIO50_nPIOR,
    GPIO51_nPIOW,
    GPIO85_nPCE_1,
    GPIO54_nPCE_2,
    GPIO79_PSKTSEL,
    GPIO55_nPREG,
    GPIO56_nPWAIT,
    GPIO57_nIOIS16,

    /* AC97 */
    GPIO28_AC97_BITCLK,
    GPIO29_AC97_SDATA_IN_0,
    GPIO30_AC97_SDATA_OUT,
    GPIO31_AC97_SYNC,
    GPIO45_AC97_SYSCLK,

    /* Keypad */
    GPIO93_KP_DKIN_0,
    GPIO94_KP_DKIN_1,
    GPIO95_KP_DKIN_2,
    GPIO100_KP_MKIN_0   | WAKEUP_ON_LEVEL_HIGH,
    GPIO101_KP_MKIN_1   | WAKEUP_ON_LEVEL_HIGH,
    GPIO102_KP_MKIN_2   | WAKEUP_ON_LEVEL_HIGH,
    GPIO97_KP_MKIN_3    | WAKEUP_ON_LEVEL_HIGH,
    GPIO98_KP_MKIN_4    | WAKEUP_ON_LEVEL_HIGH,
    GPIO99_KP_MKIN_5    | WAKEUP_ON_LEVEL_HIGH,
    GPIO103_KP_MKOUT_0,
    GPIO104_KP_MKOUT_1,
    GPIO105_KP_MKOUT_2,
    GPIO106_KP_MKOUT_3,
    GPIO107_KP_MKOUT_4,
    GPIO108_KP_MKOUT_5,
    GPIO96_KP_MKOUT_6,

    /* I2C */
    GPIO117_I2C_SCL,
    GPIO118_I2C_SDA,

    /* GPIO */
    GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
};

static unsigned long mainstone_irq_enabled;

static void mainstone_mask_irq(struct irq_data *d)
{
    int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
    MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
}

static void mainstone_unmask_irq(struct irq_data *d)
{
    int mainstone_irq = (d->irq - MAINSTONE_IRQ(0));
    /* the irq can be acknowledged only if deasserted, so it's done here */
    MST_INTSETCLR &= ~(1 << mainstone_irq);
    MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
}

static struct irq_chip mainstone_irq_chip = {
    .name       = "FPGA",
    .irq_ack    = mainstone_mask_irq,
    .irq_mask   = mainstone_mask_irq,
    .irq_unmask = mainstone_unmask_irq,
};

static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
{
    unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
    do {
        /* clear useless edge notification */
        desc->irq_data.chip->irq_ack(&desc->irq_data);
        if (likely(pending)) {
            irq = MAINSTONE_IRQ(0) + __ffs(pending);
            generic_handle_irq(irq);
        }
        pending = MST_INTSETCLR & mainstone_irq_enabled;
    } while (pending);
}

static void __init mainstone_init_irq(void)
{
    int irq;

    pxa27x_init_irq();

    /* setup extra Mainstone irqs */
    for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
        irq_set_chip_and_handler(irq, &mainstone_irq_chip,
                     handle_level_irq);
        if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
            set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
        else
            set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
    }
    set_irq_flags(MAINSTONE_IRQ(8), 0);
    set_irq_flags(MAINSTONE_IRQ(12), 0);

    MST_INTMSKENA = 0;
    MST_INTSETCLR = 0;

    irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), mainstone_irq_handler);
    irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
}

#ifdef CONFIG_PM

static void mainstone_irq_resume(void)
{
    MST_INTMSKENA = mainstone_irq_enabled;
}

static struct syscore_ops mainstone_irq_syscore_ops = {
    .resume = mainstone_irq_resume,
};

static int __init mainstone_irq_device_init(void)
{
    if (machine_is_mainstone())
        register_syscore_ops(&mainstone_irq_syscore_ops);

    return 0;
}

device_initcall(mainstone_irq_device_init);

#endif


static struct resource smc91x_resources[] = {
    [0] = {
        .start  = (MST_ETH_PHYS + 0x300),
        .end    = (MST_ETH_PHYS + 0xfffff),
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = MAINSTONE_IRQ(3),
        .end    = MAINSTONE_IRQ(3),
        .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
    }
};

static struct smc91x_platdata mainstone_smc91x_info = {
    .flags  = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
          SMC91X_NOWAIT | SMC91X_USE_DMA,
};

static struct platform_device smc91x_device = {
    .name       = "smc91x",
    .id     = 0,
    .num_resources  = ARRAY_SIZE(smc91x_resources),
    .resource   = smc91x_resources,
    .dev        = {
        .platform_data = &mainstone_smc91x_info,
    },
};

static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
{
    if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
        MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
    return 0;
}

static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
{
    if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
        MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static long mst_audio_suspend_mask;

static void mst_audio_suspend(void *priv)
{
    mst_audio_suspend_mask = MST_MSCWR2;
    MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
}

static void mst_audio_resume(void *priv)
{
    MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
}

static pxa2xx_audio_ops_t mst_audio_ops = {
    .startup    = mst_audio_startup,
    .shutdown   = mst_audio_shutdown,
    .suspend    = mst_audio_suspend,
    .resume     = mst_audio_resume,
};

static struct resource flash_resources[] = {
    [0] = {
        .start  = PXA_CS0_PHYS,
        .end    = PXA_CS0_PHYS + SZ_64M - 1,
        .flags  = IORESOURCE_MEM,
    },
    [1] = {
        .start  = PXA_CS1_PHYS,
        .end    = PXA_CS1_PHYS + SZ_64M - 1,
        .flags  = IORESOURCE_MEM,
    },
};

static struct mtd_partition mainstoneflash0_partitions[] = {
    {
        .name =     "Bootloader",
        .size =     0x00040000,
        .offset =   0,
        .mask_flags =   MTD_WRITEABLE  /* force read-only */
    },{
        .name =     "Kernel",
        .size =     0x00400000,
        .offset =   0x00040000,
    },{
        .name =     "Filesystem",
        .size =     MTDPART_SIZ_FULL,
        .offset =   0x00440000
    }
};

static struct flash_platform_data mst_flash_data[2] = {
    {
        .map_name   = "cfi_probe",
        .parts      = mainstoneflash0_partitions,
        .nr_parts   = ARRAY_SIZE(mainstoneflash0_partitions),
    }, {
        .map_name   = "cfi_probe",
        .parts      = NULL,
        .nr_parts   = 0,
    }
};

static struct platform_device mst_flash_device[2] = {
    {
        .name       = "pxa2xx-flash",
        .id     = 0,
        .dev = {
            .platform_data = &mst_flash_data[0],
        },
        .resource = &flash_resources[0],
        .num_resources = 1,
    },
    {
        .name       = "pxa2xx-flash",
        .id     = 1,
        .dev = {
            .platform_data = &mst_flash_data[1],
        },
        .resource = &flash_resources[1],
        .num_resources = 1,
    },
};

#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct platform_pwm_backlight_data mainstone_backlight_data = {
    .pwm_id     = 0,
    .max_brightness = 1023,
    .dft_brightness = 1023,
    .pwm_period_ns  = 78770,
};

static struct platform_device mainstone_backlight_device = {
    .name       = "pwm-backlight",
    .dev        = {
        .parent = &pxa27x_device_pwm0.dev,
        .platform_data = &mainstone_backlight_data,
    },
};

static void __init mainstone_backlight_register(void)
{
    int ret = platform_device_register(&mainstone_backlight_device);
    if (ret)
        printk(KERN_ERR "mainstone: failed to register backlight device: %d\n", ret);
}
#else
#define mainstone_backlight_register()  do { } while (0)
#endif

static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
    .pixclock       = 50000,
    .xres           = 640,
    .yres           = 480,
    .bpp            = 16,
    .hsync_len      = 1,
    .left_margin        = 0x9f,
    .right_margin       = 1,
    .vsync_len      = 44,
    .upper_margin       = 0,
    .lower_margin       = 0,
    .sync           = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
    .pixclock       = 110000,
    .xres           = 240,
    .yres           = 320,
    .bpp            = 16,
    .hsync_len      = 4,
    .left_margin        = 8,
    .right_margin       = 20,
    .vsync_len      = 3,
    .upper_margin       = 1,
    .lower_margin       = 10,
    .sync           = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};

static struct pxafb_mach_info mainstone_pxafb_info = {
    .num_modes          = 1,
    .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};

static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
{
    int err;

    /* make sure SD/Memory Stick multiplexer's signals
     * are routed to MMC controller
     */
    MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;

    err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
                 "MMC card detect", data);
    if (err)
        printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");

    return err;
}

static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
{
    struct pxamci_platform_data* p_d = dev->platform_data;

    if (( 1 << vdd) & p_d->ocr_mask) {
        printk(KERN_DEBUG "%s: on\n", __func__);
        MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
        MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
    } else {
        printk(KERN_DEBUG "%s: off\n", __func__);
        MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
    }
}

static void mainstone_mci_exit(struct device *dev, void *data)
{
    free_irq(MAINSTONE_MMC_IRQ, data);
}

static struct pxamci_platform_data mainstone_mci_platform_data = {
    .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
    .init           = mainstone_mci_init,
    .setpower       = mainstone_mci_setpower,
    .exit           = mainstone_mci_exit,
    .gpio_card_detect   = -1,
    .gpio_card_ro       = -1,
    .gpio_power     = -1,
};

static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
{
    unsigned long flags;

    local_irq_save(flags);
    if (mode & IR_SIRMODE) {
        MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
    } else if (mode & IR_FIRMODE) {
        MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
    }
    pxa2xx_transceiver_mode(dev, mode);
    if (mode & IR_OFF) {
        MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
    } else {
        MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
    }
    local_irq_restore(flags);
}

static struct pxaficp_platform_data mainstone_ficp_platform_data = {
    .gpio_pwdown        = -1,
    .transceiver_cap    = IR_SIRMODE | IR_FIRMODE | IR_OFF,
    .transceiver_mode   = mainstone_irda_transceiver_mode,
};

static struct gpio_keys_button gpio_keys_button[] = {
    [0] = {
        .desc   = "wakeup",
        .code   = KEY_SUSPEND,
        .type   = EV_KEY,
        .gpio   = 1,
        .wakeup = 1,
    },
};

static struct gpio_keys_platform_data mainstone_gpio_keys = {
    .buttons    = gpio_keys_button,
    .nbuttons   = 1,
};

static struct platform_device mst_gpio_keys_device = {
    .name       = "gpio-keys",
    .id     = -1,
    .dev        = {
        .platform_data  = &mainstone_gpio_keys,
    },
};

static struct platform_device *platform_devices[] __initdata = {
    &smc91x_device,
    &mst_flash_device[0],
    &mst_flash_device[1],
    &mst_gpio_keys_device,
};

static struct pxaohci_platform_data mainstone_ohci_platform_data = {
    .port_mode  = PMM_PERPORT_MODE,
    .flags      = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
};

#if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
static unsigned int mainstone_matrix_keys[] = {
    KEY(0, 0, KEY_A), KEY(1, 0, KEY_B), KEY(2, 0, KEY_C),
    KEY(3, 0, KEY_D), KEY(4, 0, KEY_E), KEY(5, 0, KEY_F),
    KEY(0, 1, KEY_G), KEY(1, 1, KEY_H), KEY(2, 1, KEY_I),
    KEY(3, 1, KEY_J), KEY(4, 1, KEY_K), KEY(5, 1, KEY_L),
    KEY(0, 2, KEY_M), KEY(1, 2, KEY_N), KEY(2, 2, KEY_O),
    KEY(3, 2, KEY_P), KEY(4, 2, KEY_Q), KEY(5, 2, KEY_R),
    KEY(0, 3, KEY_S), KEY(1, 3, KEY_T), KEY(2, 3, KEY_U),
    KEY(3, 3, KEY_V), KEY(4, 3, KEY_W), KEY(5, 3, KEY_X),
    KEY(2, 4, KEY_Y), KEY(3, 4, KEY_Z),

    KEY(0, 4, KEY_DOT), /* . */
    KEY(1, 4, KEY_CLOSE),   /* @ */
    KEY(4, 4, KEY_SLASH),
    KEY(5, 4, KEY_BACKSLASH),
    KEY(0, 5, KEY_HOME),
    KEY(1, 5, KEY_LEFTSHIFT),
    KEY(2, 5, KEY_SPACE),
    KEY(3, 5, KEY_SPACE),
    KEY(4, 5, KEY_ENTER),
    KEY(5, 5, KEY_BACKSPACE),

    KEY(0, 6, KEY_UP),
    KEY(1, 6, KEY_DOWN),
    KEY(2, 6, KEY_LEFT),
    KEY(3, 6, KEY_RIGHT),
    KEY(4, 6, KEY_SELECT),
};

struct pxa27x_keypad_platform_data mainstone_keypad_info = {
    .matrix_key_rows    = 6,
    .matrix_key_cols    = 7,
    .matrix_key_map     = mainstone_matrix_keys,
    .matrix_key_map_size    = ARRAY_SIZE(mainstone_matrix_keys),

    .enable_rotary0     = 1,
    .rotary0_up_key     = KEY_UP,
    .rotary0_down_key   = KEY_DOWN,

    .debounce_interval  = 30,
};

static void __init mainstone_init_keypad(void)
{
    pxa_set_keypad_info(&mainstone_keypad_info);
}
#else
static inline void mainstone_init_keypad(void) {}
#endif

static void __init mainstone_init(void)
{
    int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */

    pxa2xx_mfp_config(ARRAY_AND_SIZE(mainstone_pin_config));

    pxa_set_ffuart_info(NULL);
    pxa_set_btuart_info(NULL);
    pxa_set_stuart_info(NULL);

    mst_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
    mst_flash_data[1].width = 4;

    /* Compensate for SW7 which swaps the flash banks */
    mst_flash_data[SW7].name = "processor-flash";
    mst_flash_data[SW7 ^ 1].name = "mainboard-flash";

    printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
           mst_flash_data[0].name);

    /* system bus arbiter setting
     * - Core_Park
     * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
     */
    ARB_CNTRL = ARB_CORE_PARK | 0x234;

    platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));

    /* reading Mainstone's "Virtual Configuration Register"
       might be handy to select LCD type here */
    if (0)
        mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
    else
        mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;

    pxa_set_fb_info(NULL, &mainstone_pxafb_info);
    mainstone_backlight_register();

    pxa_set_mci_info(&mainstone_mci_platform_data);
    pxa_set_ficp_info(&mainstone_ficp_platform_data);
    pxa_set_ohci_info(&mainstone_ohci_platform_data);
    pxa_set_i2c_info(NULL);
    pxa_set_ac97_info(&mst_audio_ops);

    mainstone_init_keypad();
}


static struct map_desc mainstone_io_desc[] __initdata = {
    {   /* CPLD */
        .virtual    =  MST_FPGA_VIRT,
        .pfn        = __phys_to_pfn(MST_FPGA_PHYS),
        .length     = 0x00100000,
        .type       = MT_DEVICE
    }
};

static void __init mainstone_map_io(void)
{
    pxa27x_map_io();
    iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));

    /*  for use I SRAM as framebuffer.  */
    PSLR |= 0xF04;
    PCFR = 0x66;
}

/*
 * Driver for the 8 discrete LEDs available for general use:
 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
 * so be sure to not monkey with them here.
 */

#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
struct mainstone_led {
    struct led_classdev cdev;
    u8          mask;
};

/*
 * The triggers lines up below will only be used if the
 * LED triggers are compiled in.
 */
static const struct {
    const char *name;
    const char *trigger;
} mainstone_leds[] = {
    { "mainstone:D28", "default-on", },
    { "mainstone:D27", "cpu0", },
    { "mainstone:D26", "heartbeat" },
    { "mainstone:D25", },
    { "mainstone:D24", },
    { "mainstone:D23", },
    { "mainstone:D22", },
    { "mainstone:D21", },
};

static void mainstone_led_set(struct led_classdev *cdev,
                  enum led_brightness b)
{
    struct mainstone_led *led = container_of(cdev,
                     struct mainstone_led, cdev);
    u32 reg = MST_LEDCTRL;

    if (b != LED_OFF)
        reg |= led->mask;
    else
        reg &= ~led->mask;

    MST_LEDCTRL = reg;
}

static enum led_brightness mainstone_led_get(struct led_classdev *cdev)
{
    struct mainstone_led *led = container_of(cdev,
                     struct mainstone_led, cdev);
    u32 reg = MST_LEDCTRL;

    return (reg & led->mask) ? LED_FULL : LED_OFF;
}

static int __init mainstone_leds_init(void)
{
    int i;

    if (!machine_is_mainstone())
        return -ENODEV;

    /* All ON */
    MST_LEDCTRL |= 0xff;
    for (i = 0; i < ARRAY_SIZE(mainstone_leds); i++) {
        struct mainstone_led *led;

        led = kzalloc(sizeof(*led), GFP_KERNEL);
        if (!led)
            break;

        led->cdev.name = mainstone_leds[i].name;
        led->cdev.brightness_set = mainstone_led_set;
        led->cdev.brightness_get = mainstone_led_get;
        led->cdev.default_trigger = mainstone_leds[i].trigger;
        led->mask = BIT(i);

        if (led_classdev_register(NULL, &led->cdev) < 0) {
            kfree(led);
            break;
        }
    }

    return 0;
}

/*
 * Since we may have triggers on any subsystem, defer registration
 * until after subsystem_init.
 */
fs_initcall(mainstone_leds_init);
#endif

MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
    /* Maintainer: MontaVista Software Inc. */
    .atag_offset    = 0x100,    /* BLOB boot parameter setting */
    .map_io     = mainstone_map_io,
    .nr_irqs    = MAINSTONE_NR_IRQS,
    .init_irq   = mainstone_init_irq,
    .handle_irq = pxa27x_handle_irq,
    .timer      = &pxa_timer,
    .init_machine   = mainstone_init,
    .restart    = pxa_restart,
MACHINE_END