arch/arm/mach-pxa/mainstone.c - maze/linux - Git at Google

 /*
  *  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/init.h>
 #include <linux/device.h>
 #include <linux/sysdev.h>
 #include <linux/interrupt.h>
 #include <linux/sched.h>
 #include <linux/bitops.h>
 #include <linux/fb.h>

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

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

 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/mainstone.h>
 #include <asm/arch/audio.h>
 #include <asm/arch/pxafb.h>
 #include <asm/arch/mmc.h>

 #include "generic.h"


 static unsigned long mainstone_irq_enabled;

 static void mainstone_mask_irq(unsigned int irq)
 {
 	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
 	MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
 }

 static void mainstone_unmask_irq(unsigned int irq)
 {
 	int mainstone_irq = (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 irqchip mainstone_irq_chip = {
 	.ack		= mainstone_mask_irq,
 	.mask		= mainstone_mask_irq,
 	.unmask		= mainstone_unmask_irq,
 };

 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
 				  struct pt_regs *regs)
 {
 	unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
 	do {
 		GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
 		if (likely(pending)) {
 			irq = MAINSTONE_IRQ(0) + __ffs(pending);
 			desc = irq_desc + irq;
 			desc_handle_irq(irq, desc, regs);
 		}
 		pending = MST_INTSETCLR & mainstone_irq_enabled;
 	} while (pending);
 }

 static void __init mainstone_init_irq(void)
 {
 	int irq;

 	pxa_init_irq();

 	/* setup extra Mainstone irqs */
 	for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
 		set_irq_chip(irq, &mainstone_irq_chip);
 		set_irq_handler(irq, do_level_IRQ);
 		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;

 	set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
 	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 }

 #ifdef CONFIG_PM

 static int mainstone_irq_resume(struct sys_device *dev)
 {
 	MST_INTMSKENA = mainstone_irq_enabled;
 	return 0;
 }

 static struct sysdev_class mainstone_irq_sysclass = {
 	set_kset_name("cpld_irq"),
 	.resume = mainstone_irq_resume,
 };

 static struct sys_device mainstone_irq_device = {
 	.cls = &mainstone_irq_sysclass,
 };

 static int __init mainstone_irq_device_init(void)
 {
 	int ret = sysdev_class_register(&mainstone_irq_sysclass);
 	if (ret == 0)
 		ret = sysdev_register(&mainstone_irq_device);
 	return ret;
 }

 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,
 	}
 };

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

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

 static void mst_audio_shutdown(snd_pcm_substream_t *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 platform_device mst_audio_device = {
 	.name		= "pxa2xx-ac97",
 	.id		= -1,
 	.dev		= { .platform_data = &mst_audio_ops },
 };

 static void mainstone_backlight_power(int on)
 {
 	if (on) {
 		pxa_gpio_mode(GPIO16_PWM0_MD);
 		pxa_set_cken(CKEN0_PWM0, 1);
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x3ff;
 		PWM_PERVAL0 = 0x3ff;
 	} else {
 		PWM_CTRL0 = 0;
 		PWM_PWDUTY0 = 0x0;
 		PWM_PERVAL0 = 0x3FF;
 		pxa_set_cken(CKEN0_PWM0, 0);
 	}
 }

 static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
 	.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,
 	.lccr0			= LCCR0_Act,
 	.lccr3			= LCCR3_PCP,
 	.pxafb_backlight_power	= mainstone_backlight_power,
 };

 static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
 	.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,
 	.lccr0			= LCCR0_Act,
 	.lccr3			= LCCR3_PCP,
 	.pxafb_backlight_power	= mainstone_backlight_power,
 };

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

 	/*
 	 * setup GPIO for PXA27x MMC controller
 	 */
 	pxa_gpio_mode(GPIO32_MMCCLK_MD);
 	pxa_gpio_mode(GPIO112_MMCCMD_MD);
 	pxa_gpio_mode(GPIO92_MMCDAT0_MD);
 	pxa_gpio_mode(GPIO109_MMCDAT1_MD);
 	pxa_gpio_mode(GPIO110_MMCDAT2_MD);
 	pxa_gpio_mode(GPIO111_MMCDAT3_MD);

 	/* 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, SA_INTERRUPT,
 			     "MMC card detect", data);
 	if (err) {
 		printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 		return -1;
 	}

 	return 0;
 }

 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", __FUNCTION__);
 		MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
 		MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 	} else {
 		printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 		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,
 };

 static void __init mainstone_init(void)
 {
 	/*
 	 * On Mainstone, we route AC97_SYSCLK via GPIO45 to
 	 * the audio daughter card
 	 */
 	pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);

 	platform_device_register(&smc91x_device);
 	platform_device_register(&mst_audio_device);

 	/* reading Mainstone's "Virtual Configuration Register"
 	   might be handy to select LCD type here */
 	if (0)
 		set_pxa_fb_info(&toshiba_ltm04c380k);
 	else
 		set_pxa_fb_info(&toshiba_ltm035a776c);

 	pxa_set_mci_info(&mainstone_mci_platform_data);
 }


 static struct map_desc mainstone_io_desc[] __initdata = {
   { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
 };

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

 	/* initialize sleep mode regs (wake-up sources, etc) */
 	PGSR0 = 0x00008800;
 	PGSR1 = 0x00000002;
 	PGSR2 = 0x0001FC00;
 	PGSR3 = 0x00001F81;
 	PWER  = 0xC0000002;
 	PRER  = 0x00000002;
 	PFER  = 0x00000002;
  	/*	for use I SRAM as framebuffer.	*/
  	PSLR |= 0xF04;
  	PCFR = 0x66;
  	/*	For Keypad wakeup.	*/
  	KPC &=~KPC_ASACT;
  	KPC |=KPC_AS;
  	PKWR  = 0x000FD000;
  	/*	Need read PKWR back after set it.	*/
  	PKWR;
 }

 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
 	/* Maintainer: MontaVista Software Inc. */
 	.phys_ram	= 0xa0000000,
 	.phys_io	= 0x40000000,
 	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
 	.map_io		= mainstone_map_io,
 	.init_irq	= mainstone_init_irq,
 	.timer		= &pxa_timer,
 	.init_machine	= mainstone_init,
 MACHINE_END
	/*
	* 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/init.h>
	#include <linux/device.h>
	#include <linux/sysdev.h>
	#include <linux/interrupt.h>
	#include <linux/sched.h>
	#include <linux/bitops.h>
	#include <linux/fb.h>

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

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

	#include <asm/arch/pxa-regs.h>
	#include <asm/arch/mainstone.h>
	#include <asm/arch/audio.h>
	#include <asm/arch/pxafb.h>
	#include <asm/arch/mmc.h>

	#include "generic.h"


	static unsigned long mainstone_irq_enabled;

	static void mainstone_mask_irq(unsigned int irq)
	{
	int mainstone_irq = (irq - MAINSTONE_IRQ(0));
	MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
	}

	static void mainstone_unmask_irq(unsigned int irq)
	{
	int mainstone_irq = (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 irqchip mainstone_irq_chip = {
	.ack = mainstone_mask_irq,
	.mask = mainstone_mask_irq,
	.unmask = mainstone_unmask_irq,
	};

	static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
	struct pt_regs *regs)
	{
	unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
	do {
	GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
	if (likely(pending)) {
	irq = MAINSTONE_IRQ(0) + __ffs(pending);
	desc = irq_desc + irq;
	desc_handle_irq(irq, desc, regs);
	}
	pending = MST_INTSETCLR & mainstone_irq_enabled;
	} while (pending);
	}

	static void __init mainstone_init_irq(void)
	{
	int irq;

	pxa_init_irq();

	/* setup extra Mainstone irqs */
	for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
	set_irq_chip(irq, &mainstone_irq_chip);
	set_irq_handler(irq, do_level_IRQ);
	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;

	set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
	set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
	}

	#ifdef CONFIG_PM

	static int mainstone_irq_resume(struct sys_device *dev)
	{
	MST_INTMSKENA = mainstone_irq_enabled;
	return 0;
	}

	static struct sysdev_class mainstone_irq_sysclass = {
	set_kset_name("cpld_irq"),
	.resume = mainstone_irq_resume,
	};

	static struct sys_device mainstone_irq_device = {
	.cls = &mainstone_irq_sysclass,
	};

	static int __init mainstone_irq_device_init(void)
	{
	int ret = sysdev_class_register(&mainstone_irq_sysclass);
	if (ret == 0)
	ret = sysdev_register(&mainstone_irq_device);
	return ret;
	}

	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,
	}
	};

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

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

	static void mst_audio_shutdown(snd_pcm_substream_t 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 platform_device mst_audio_device = {
	.name = "pxa2xx-ac97",
	.id = -1,
	.dev = { .platform_data = &mst_audio_ops },
	};

	static void mainstone_backlight_power(int on)
	{
	if (on) {
	pxa_gpio_mode(GPIO16_PWM0_MD);
	pxa_set_cken(CKEN0_PWM0, 1);
	PWM_CTRL0 = 0;
	PWM_PWDUTY0 = 0x3ff;
	PWM_PERVAL0 = 0x3ff;
	} else {
	PWM_CTRL0 = 0;
	PWM_PWDUTY0 = 0x0;
	PWM_PERVAL0 = 0x3FF;
	pxa_set_cken(CKEN0_PWM0, 0);
	}
	}

	static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
	.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,
	.lccr0 = LCCR0_Act,
	.lccr3 = LCCR3_PCP,
	.pxafb_backlight_power = mainstone_backlight_power,
	};

	static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
	.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,
	.lccr0 = LCCR0_Act,
	.lccr3 = LCCR3_PCP,
	.pxafb_backlight_power = mainstone_backlight_power,
	};

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

	/*
	* setup GPIO for PXA27x MMC controller
	*/
	pxa_gpio_mode(GPIO32_MMCCLK_MD);
	pxa_gpio_mode(GPIO112_MMCCMD_MD);
	pxa_gpio_mode(GPIO92_MMCDAT0_MD);
	pxa_gpio_mode(GPIO109_MMCDAT1_MD);
	pxa_gpio_mode(GPIO110_MMCDAT2_MD);
	pxa_gpio_mode(GPIO111_MMCDAT3_MD);

	/* 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, SA_INTERRUPT,
	"MMC card detect", data);
	if (err) {
	printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
	return -1;
	}

	return 0;
	}

	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", __FUNCTION__);
	MST_MSCWR1 \|= MST_MSCWR1_MMC_ON;
	MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
	} else {
	printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
	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,
	};

	static void __init mainstone_init(void)
	{
	/*
	* On Mainstone, we route AC97_SYSCLK via GPIO45 to
	* the audio daughter card
	*/
	pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);

	platform_device_register(&smc91x_device);
	platform_device_register(&mst_audio_device);

	/* reading Mainstone's "Virtual Configuration Register"
	might be handy to select LCD type here */
	if (0)
	set_pxa_fb_info(&toshiba_ltm04c380k);
	else
	set_pxa_fb_info(&toshiba_ltm035a776c);

	pxa_set_mci_info(&mainstone_mci_platform_data);
	}


	static struct map_desc mainstone_io_desc[] __initdata = {
	{ MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
	};

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

	/* initialize sleep mode regs (wake-up sources, etc) */
	PGSR0 = 0x00008800;
	PGSR1 = 0x00000002;
	PGSR2 = 0x0001FC00;
	PGSR3 = 0x00001F81;
	PWER = 0xC0000002;
	PRER = 0x00000002;
	PFER = 0x00000002;
	/* for use I SRAM as framebuffer. */
	PSLR \|= 0xF04;
	PCFR = 0x66;
	/* For Keypad wakeup. */
	KPC &=~KPC_ASACT;
	KPC \|=KPC_AS;
	PKWR = 0x000FD000;
	/* Need read PKWR back after set it. */
	PKWR;
	}

	MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
	/* Maintainer: MontaVista Software Inc. */
	.phys_ram = 0xa0000000,
	.phys_io = 0x40000000,
	.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
	.map_io = mainstone_map_io,
	.init_irq = mainstone_init_irq,
	.timer = &pxa_timer,
	.init_machine = mainstone_init,
	MACHINE_END