[ARM PATCH] 1955/3: Motorola i.MX architecture support

Patch from Sascha Hauer

This patch adds support for the Motorola i.MX SoC. It has board
support included for the MX1ADS Eval Board, but the patch has been
tested on two other custom boards as well.

Things changed since Patch 1955/2:
- fixed according to Russell's comments.
- removed unnecassary files from include/asm-arm/arch-imx.
- removed cpufreq support (it needs rework).
- made myself the Maintainer of mx1ads

Sascha Hauer

arch/arm/Kconfig

@@ -158,6 +158,9 @@ config ARCH_VERSATILE_PB
 	help
 	  This enables support for ARM Ltd Versatile PB board.
 
+config ARCH_IMX
+	bool "IMX"
+
 endchoice
 
 source "arch/arm/mach-clps711x/Kconfig"
@@ -182,6 +185,8 @@ source "arch/arm/mach-s3c2410/Kconfig"
 
 source "arch/arm/mach-lh7a40x/Kconfig"
 
+source "arch/arm/mach-imx/Kconfig"
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
@@ -294,7 +299,7 @@ config ARM_AMBA
 
 config ISA
 	bool
-	depends on FOOTBRIDGE_HOST || ARCH_SHARK || ARCH_CLPS7500 || ARCH_EBSA110 || ARCH_CDB89712 || ARCH_EDB7211 || ARCH_SA1100
+	depends on FOOTBRIDGE_HOST || ARCH_SHARK || ARCH_CLPS7500 || ARCH_EBSA110 || ARCH_CDB89712 || ARCH_EDB7211 || ARCH_SA1100 || ARCH_MX1ADS
 	default y
 	help
 	  Find out whether you have ISA slots on your motherboard.  ISA is the
@@ -552,7 +557,7 @@ config CMDLINE
 
 config LEDS
 	bool "Timer and CPU usage LEDs"
-	depends on ARCH_NETWINDER || ARCH_EBSA110 || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_CDB89712 || ARCH_P720T || ARCH_OMAP || ARCH_VERSATILE_PB
+	depends on ARCH_NETWINDER || ARCH_EBSA110 || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_CDB89712 || ARCH_P720T || ARCH_OMAP || ARCH_VERSATILE_PB || ARCH_IMX
 	help
 	  If you say Y here, the LEDs on your machine will be used
 	  to provide useful information about your current system status.
@@ -565,8 +570,8 @@ config LEDS
 	  system, but the driver will do nothing.
 
 config LEDS_TIMER
-	bool "Timer LED" if LEDS && (ARCH_NETWINDER || ARCH_EBSA285 || ARCH_SHARK || MACH_MAINSTONE || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_P720T || ARCH_VERSATILE_PB)
-	depends on ARCH_NETWINDER || ARCH_EBSA110 || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_CDB89712 || ARCH_P720T || ARCH_OMAP || ARCH_VERSATILE_PB
+	bool "Timer LED" if LEDS && (ARCH_NETWINDER || ARCH_EBSA285 || ARCH_SHARK || MACH_MAINSTONE || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_P720T || ARCH_VERSATILE_PB || ARCH_IMX)
+	depends on ARCH_NETWINDER || ARCH_EBSA110 || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_CDB89712 || ARCH_P720T || ARCH_OMAP || ARCH_VERSATILE_PB || ARCH_IMX
 	default y if ARCH_EBSA110
 	help
 	  If you say Y here, one of the system LEDs (the green one on the
@@ -581,7 +586,7 @@ config LEDS_TIMER
 
 config LEDS_CPU
 	bool "CPU usage LED"
-	depends on LEDS && (ARCH_NETWINDER || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_P720T || ARCH_VERSATILE_PB)
+	depends on LEDS && (ARCH_NETWINDER || ARCH_EBSA285 || ARCH_SHARK || ARCH_CO285 || ARCH_SA1100 || ARCH_LUBBOCK || MACH_MAINSTONE || ARCH_PXA_IDP || ARCH_INTEGRATOR || ARCH_P720T || ARCH_VERSATILE_PB || ARCH_IMX)
 	help
 	  If you say Y here, the red LED will be used to give a good real
 	  time indication of CPU usage, by lighting whenever the idle task

arch/arm/Makefile

@@ -94,6 +94,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
  machine-$(CONFIG_ARCH_S3C2410)	   := s3c2410
  machine-$(CONFIG_ARCH_LH7A40X)	   := lh7a40x
  machine-$(CONFIG_ARCH_VERSATILE_PB) := versatile
+ machine-$(CONFIG_ARCH_IMX)	   := imx
 
 ifeq ($(CONFIG_ARCH_EBSA110),y)
 # This is what happens if you forget the IOCS16 line.

arch/arm/boot/Makefile

@@ -47,6 +47,7 @@ endif
 params_phys-$(CONFIG_ARCH_SA1100)	:= 0xc0000100
 initrd_phys-$(CONFIG_ARCH_SA1100)	:= 0xc0800000
    zreladdr-$(CONFIG_ARCH_PXA)		:= 0xa0008000
+   zreladdr-$(CONFIG_ARCH_MX1ADS)	:= 0x08008000
    zreladdr-$(CONFIG_ARCH_IOP3XX)	:= 0xa0008000
 params_phys-$(CONFIG_ARCH_IOP3XX)	:= 0xa0000100
    zreladdr-$(CONFIG_ARCH_IXP4XX)	:= 0x00008000

arch/arm/kernel/debug.S

@@ -615,6 +615,30 @@
 		tst	\rd, #1 << 3		@ UARTFLGUBUSY - 1 when busy
 		bne	1001b
 		.endm
+
+#elif defined(CONFIG_ARCH_IMX)
+
+		.macro	addruart,rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		moveq	\rx, #0x00000000	@ physical
+		movne	\rx, #0xe0000000	@ virtual
+		orr	\rx, \rx, #0x00200000
+		orr	\rx, \rx, #0x00006000	@ UART1 offset
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #0x40]	@ TXDATA
+		.endm
+
+		.macro	waituart,rd,rx
+		.endm
+
+		.macro	busyuart,rd,rx
+1002:		ldr	\rd, [\rx, #0x98]	@ SR2
+		tst	\rd, #1 << 3		@ TXDC
+		beq	1002b			@ wait until transmit done
+		.endm
 #else
 #error Unknown architecture
 #endif

arch/arm/kernel/entry-armv.S

@@ -884,6 +884,31 @@ ENTRY(soft_irq_mask)
                .macro  irq_prio_table
                .endm
 
+#elif defined(CONFIG_ARCH_IMX)
+
+		.macro	disable_fiq
+		.endm
+#define AITC_NIVECSR   0x40
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr	\irqstat, =IO_ADDRESS(IMX_AITC_BASE)
+		@ Load offset & priority of the highest priority
+		@ interrupt pending.
+		ldr	\irqnr, [\irqstat, #AITC_NIVECSR]
+		@ Shift off the priority leaving the offset or
+		@ "interrupt number"
+		mov	\irqnr, \irqnr, lsr #16
+ 		ldr	\irqstat, =1	@ dummy compare
+		ldr	\base, =0xFFFF		// invalid interrupt
+		cmp	\irqnr, \base
+		bne	1001f
+		ldr	\irqstat, =0
+1001:
+		tst	\irqstat, #1	@ to make the condition code = TRUE
+		.endm
+
+		.macro	irq_prio_table
+		.endm
+
 #else
 #error Unknown architecture
 #endif

arch/arm/mach-imx/Kconfig

+menu "IMX Implementations"
+	depends on ARCH_IMX
+
+config ARCH_MX1ADS
+	bool "mx1ads"
+	depends on ARCH_IMX
+	help
+	  Say Y here if you are using the Motorola MX1ADS board
+
+endmenu

arch/arm/mach-imx/Makefile

+#
+# Makefile for the linux kernel.
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+
+# Object file lists.
+
+obj-y			+= irq.o time.o dma.o generic.o
+
+# Specific board support
+obj-$(CONFIG_ARCH_MX1ADS) += mx1ads.o
+
+# Support for blinky lights
+led-y := leds.o
+
+obj-$(CONFIG_LEDS)	+=  $(led-y)
+led-$(CONFIG_ARCH_MX1ADS) += leds-mx1ads.o

arch/arm/mach-imx/dma.c

+/*
+ *  linux/arch/arm/mach-imx/dma.c
+ *
+ *  imx DMA registration and IRQ dispatching
+ *
+ *  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.
+ *
+ *  03/03/2004 Sascha Hauer <sascha@saschahauer.de>
+ *             initial version heavily inspired by
+ *             linux/arch/arm/mach-pxa/dma.c
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/hardware.h>
+#include <asm/dma.h>
+
+static struct dma_channel {
+	char *name;
+	void (*irq_handler) (int, void *, struct pt_regs *);
+	void (*err_handler) (int, void *, struct pt_regs *);
+	void *data;
+} dma_channels[11];
+
+/* set err_handler to NULL to have the standard info-only error handler */
+int
+imx_request_dma(char *name, imx_dma_prio prio,
+		void (*irq_handler) (int, void *, struct pt_regs *),
+		void (*err_handler) (int, void *, struct pt_regs *), void *data)
+{
+	unsigned long flags;
+	int i, found = 0;
+
+	/* basic sanity checks */
+	if (!name || !irq_handler)
+		return -EINVAL;
+
+	local_irq_save(flags);
+
+	/* try grabbing a DMA channel with the requested priority */
+	for (i = prio; i < prio + (prio == DMA_PRIO_LOW) ? 8 : 4; i++) {
+		if (!dma_channels[i].name) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found) {
+		/* requested prio group is full, try hier priorities */
+		for (i = prio - 1; i >= 0; i--) {
+			if (!dma_channels[i].name) {
+				found = 1;
+				break;
+			}
+		}
+	}
+
+	if (found) {
+		DIMR &= ~(1 << i);
+		dma_channels[i].name = name;
+		dma_channels[i].irq_handler = irq_handler;
+		dma_channels[i].err_handler = err_handler;
+		dma_channels[i].data = data;
+	} else {
+		printk(KERN_WARNING "No more available DMA channels for %s\n",
+		       name);
+		i = -ENODEV;
+	}
+
+	local_irq_restore(flags);
+	return i;
+}
+
+void
+imx_free_dma(int dma_ch)
+{
+	unsigned long flags;
+
+	if (!dma_channels[dma_ch].name) {
+		printk(KERN_CRIT
+		       "%s: trying to free channel %d which is already freed\n",
+		       __FUNCTION__, dma_ch);
+		return;
+	}
+
+	local_irq_save(flags);
+	DIMR &= ~(1 << dma_ch);
+	dma_channels[dma_ch].name = NULL;
+	local_irq_restore(flags);
+}
+
+static irqreturn_t
+dma_err_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int i;
+	struct dma_channel *channel;
+	unsigned int err_mask = DBTOSR | DRTOSR | DSESR | DBOSR;
+
+	for (i = 0; i < 11; i++) {
+		channel = &dma_channels[i];
+
+		if ( (err_mask & 1<<i) && channel->name && channel->err_handler) {
+			channel->err_handler(i, channel->data, regs);
+			continue;
+		}
+
+		if (DBTOSR & (1 << i)) {
+			printk(KERN_WARNING
+			       "Burst timeout on channel %d (%s)\n",
+			       i, channel->name);
+			DBTOSR |= (1 << i);
+		}
+		if (DRTOSR & (1 << i)) {
+			printk(KERN_WARNING
+			       "Request timeout on channel %d (%s)\n",
+			       i, channel->name);
+			DRTOSR |= (1 << i);
+		}
+		if (DSESR & (1 << i)) {
+			printk(KERN_WARNING
+			       "Transfer timeout on channel %d (%s)\n",
+			       i, channel->name);
+			DSESR |= (1 << i);
+		}
+		if (DBOSR & (1 << i)) {
+			printk(KERN_WARNING
+			       "Buffer overflow timeout on channel %d (%s)\n",
+			       i, channel->name);
+			DBOSR |= (1 << i);
+		}
+		DISR |= (1 << i);
+	}
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+dma_irq_handler(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int i, disr = DISR;
+
+	for (i = 0; i < 11; i++) {
+		if (disr & (1 << i)) {
+			struct dma_channel *channel = &dma_channels[i];
+			if (channel->name && channel->irq_handler) {
+				channel->irq_handler(i, channel->data, regs);
+			} else {
+				/*
+				 * IRQ for an unregistered DMA channel:
+				 * let's clear the interrupts and disable it.
+				 */
+				printk(KERN_WARNING
+				       "spurious IRQ for DMA channel %d\n", i);
+				DISR |= (1 << i);
+			}
+		}
+	}
+	return IRQ_HANDLED;
+}
+
+static int __init
+imx_dma_init(void)
+{
+	int ret;
+
+	/* reset DMA module */
+	DCR = DCR_DRST;
+
+	ret = request_irq(DMA_INT, dma_irq_handler, 0, "DMA", NULL);
+	if (ret) {
+		printk(KERN_CRIT "Wow!  Can't register IRQ for DMA\n");
+		return ret;
+	}
+
+	ret = request_irq(DMA_ERR, dma_err_handler, 0, "DMA", NULL);
+	if (ret) {
+		printk(KERN_CRIT "Wow!  Can't register ERRIRQ for DMA\n");
+		free_irq(DMA_INT, NULL);
+	}
+
+	/* enable DMA module */
+	DCR = DCR_DEN;
+
+	/* clear all interrupts */
+	DISR = 0x3ff;
+
+	/* enable interrupts */
+	DIMR = 0;
+
+	return ret;
+}
+
+arch_initcall(imx_dma_init);
+
+EXPORT_SYMBOL(imx_request_dma);
+EXPORT_SYMBOL(imx_free_dma);

arch/arm/mach-imx/generic.c

+/*
+ *  arch/arm/mach-imx/generic.c
+ *
+ *  author: Sascha Hauer
+ *  Created: april 20th, 2004
+ *  Copyright: Synertronixx GmbH
+ *
+ *  Common code for i.MX machines
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/hardware.h>
+
+#include <asm/mach/map.h>
+
+void imx_gpio_mode(int gpio_mode)
+{
+	unsigned int pin = gpio_mode & GPIO_PIN_MASK;
+	unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
+	unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
+	unsigned int tmp;
+
+	/* Pullup enable */
+	if(gpio_mode & GPIO_PUEN)
+		PUEN(port) |= (1<<pin);
+	else
+		PUEN(port) &= ~(1<<pin);
+
+	/* Data direction */
+	if(gpio_mode & GPIO_OUT)
+		DDIR(port) |= 1<<pin;
+	else
+		DDIR(port) &= ~(1<<pin);
+
+	/* Primary / alternate function */
+	if(gpio_mode & GPIO_AF)
+		GPR(port) |= (1<<pin);
+	else
+		GPR(port) &= ~(1<<pin);
+
+	/* use as gpio? */
+	if( ocr == 3 )
+		GIUS(port) |= (1<<pin);
+	else
+		GIUS(port) &= ~(1<<pin);
+
+	/* Output / input configuration */
+	/* FIXME: I'm not very sure about OCR and ICONF, someone
+	 * should have a look over it
+	 */
+	if(pin<16) {
+		tmp = OCR1(port);
+		tmp &= ~( 3<<(pin*2));
+		tmp |= (ocr << (pin*2));
+		OCR1(port) = tmp;
+
+		if( gpio_mode &	GPIO_AOUT )
+			ICONFA1(port) &= ~( 3<<(pin*2));
+		if( gpio_mode &	GPIO_BOUT )
+			ICONFB1(port) &= ~( 3<<(pin*2));
+	} else {
+		tmp = OCR2(port);
+		tmp &= ~( 3<<((pin-16)*2));
+		tmp |= (ocr << ((pin-16)*2));
+		OCR2(port) = tmp;
+
+		if( gpio_mode &	GPIO_AOUT )
+			ICONFA2(port) &= ~( 3<<((pin-16)*2));
+		if( gpio_mode &	GPIO_BOUT )
+			ICONFB2(port) &= ~( 3<<((pin-16)*2));
+	}
+}
+
+EXPORT_SYMBOL(imx_gpio_mode);
+
+/*
+ *  get the system pll clock in Hz
+ *
+ *                  mfi + mfn / (mfd +1)
+ *  f = 2 * f_ref * --------------------
+ *                        pd + 1
+ */
+static unsigned int imx_decode_pll(unsigned int pll)
+{
+	u32 mfi = (pll >> 10) & 0xf;
+	u32 mfn = pll & 0x3f;
+	u32 mfd = (pll >> 16) & 0x3f;
+	u32 pd =  (pll >> 26) & 0xf;
+	u32 f_ref = (CSCR & CSCR_SYSTEM_SEL) ? 16000000 : (CLK32 * 512);
+
+	mfi = mfi <= 5 ? 5 : mfi;
+
+	return (2 * (f_ref>>10) * ( (mfi<<10) + (mfn<<10) / (mfd+1) )) / (pd+1);
+}
+
+unsigned int imx_get_system_clk(void)
+{
+	return imx_decode_pll(SPCTL0);
+}
+EXPORT_SYMBOL(imx_get_system_clk);
+
+unsigned int imx_get_mcu_clk(void)
+{
+	return imx_decode_pll(MPCTL0);
+}
+EXPORT_SYMBOL(imx_get_mcu_clk);
+
+/*
+ *  get peripheral clock 1 ( UART[12], Timer[12], PWM )
+ */
+unsigned int imx_get_perclk1(void)
+{
+	return imx_get_system_clk() / (((PCDR) & 0xf)+1);
+}
+EXPORT_SYMBOL(imx_get_perclk1);
+
+/*
+ *  get peripheral clock 2 ( LCD, SD, SPI[12] )
+ */
+unsigned int imx_get_perclk2(void)
+{
+	return imx_get_system_clk() / (((PCDR>>4) & 0xf)+1);
+}
+EXPORT_SYMBOL(imx_get_perclk2);
+
+/*
+ *  get peripheral clock 3 ( SSI )
+ */
+unsigned int imx_get_perclk3(void)
+{
+	return imx_get_system_clk() / (((PCDR>>16) & 0x7f)+1);
+}
+EXPORT_SYMBOL(imx_get_perclk3);
+
+/*
+ *  get hclk ( SDRAM, CSI, Memory Stick, I2C, DMA )
+ */
+unsigned int imx_get_hclk(void)
+{
+	return imx_get_system_clk() / (((CSCR>>10) & 0xf)+1);
+}
+EXPORT_SYMBOL(imx_get_hclk);
+
+static struct resource imx_mmc_resources[] = {
+	[0] = {
+		.start	= 0x00214000,
+		.end	= 0x002140FF,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= (SDHC_INT),
+		.end	= (SDHC_INT),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device imx_mmc_device = {
+	.name		= "imx-mmc",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(imx_mmc_resources),
+	.resource	= imx_mmc_resources,
+};
+
+static struct resource imx_uart1_resources[] = {
+	[0] = {
+		.start	= 0x00206000,
+		.end	= 0x002060FF,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= (UART1_MINT_RX),
+		.end	= (UART1_MINT_RX),
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= (UART1_MINT_TX),
+		.end	= (UART1_MINT_TX),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device imx_uart1_device = {
+	.name		= "imx-uart",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(imx_uart1_resources),
+	.resource	= imx_uart1_resources,
+};
+
+static struct resource imx_uart2_resources[] = {
+	[0] = {
+		.start	= 0x00207000,
+		.end	= 0x002070FF,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= (UART2_MINT_RX),
+		.end	= (UART2_MINT_RX),
+		.flags	= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start	= (UART2_MINT_TX),
+		.end	= (UART2_MINT_TX),
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device imx_uart2_device = {
+	.name		= "imx-uart",
+	.id		= 1,
+	.num_resources	= ARRAY_SIZE(imx_uart2_resources),
+	.resource	= imx_uart2_resources,
+};
+
+static struct resource imxfb_resources[] = {
+	[0] = {
+		.start	= 0x00205000,
+		.end	= 0x002050FF,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= LCDC_INT,
+		.end	= LCDC_INT,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device imxfb_device = {
+	.name		= "imx-fb",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(imxfb_resources),
+	.resource	= imxfb_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&imx_mmc_device,
+	&imxfb_device,
+	&imx_uart1_device,
+	&imx_uart2_device,
+};
+
+static struct map_desc imx_io_desc[] __initdata = {
+	/* virtual     physical    length      type */
+	{IMX_IO_BASE, IMX_IO_PHYS, IMX_IO_SIZE, MT_DEVICE},
+};
+
+void __init
+imx_map_io(void)
+{
+	iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc));
+}
+
+static int __init imx_init(void)
+{
+	return platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+subsys_initcall(imx_init);

arch/arm/mach-imx/generic.h

+/*
+ *  linux/arch/arm/mach-imx/generic.h
+ *
+ * Author:	Sascha Hauer <sascha@saschahauer.de>
+ * Copyright:	Synertronixx GmbH
+ *
+ * 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.
+ */
+
+extern void __init imx_map_io(void);
+extern void __init imx_init_irq(void);
+extern void __init imx_init_time(void);

arch/arm/mach-imx/irq.c

+/*
+ *  linux/arch/arm/mach-imx/irq.c
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ *  03/03/2004   Sascha Hauer <sascha@saschahauer.de>
+ *               Copied from the motorola bsp package and added gpio demux
+ *               interrupt handler
+ */
+
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+
+#include <asm/mach/irq.h>
+
+/*
+ *
+ * We simply use the ENABLE DISABLE registers inside of the IMX
+ * to turn on/off specific interrupts.  FIXME- We should
+ * also add support for the accelerated interrupt controller
+ * by putting offets to irq jump code in the appropriate
+ * places.
+ *
+ */
+
+#define INTENNUM_OFF              0x8
+#define INTDISNUM_OFF             0xC
+
+#define VA_AITC_BASE              IO_ADDRESS(IMX_AITC_BASE)
+#define IMX_AITC_INTDISNUM       (VA_AITC_BASE + INTDISNUM_OFF)
+#define IMX_AITC_INTENNUM        (VA_AITC_BASE + INTENNUM_OFF)
+
+#if 0
+#define DEBUG_IRQ(fmt...)	printk(fmt)
+#else
+#define DEBUG_IRQ(fmt...)	do { } while (0)
+#endif
+
+static void
+imx_mask_irq(unsigned int irq)
+{
+	__raw_writel(irq, IMX_AITC_INTDISNUM);
+}
+
+static void
+imx_unmask_irq(unsigned int irq)
+{
+	__raw_writel(irq, IMX_AITC_INTENNUM);
+}
+
+static int
+imx_gpio_irq_type(unsigned int _irq, unsigned int type)
+{
+	unsigned int irq_type = 0, irq, reg, bit;
+
+	irq = _irq - IRQ_GPIOA(0);
+	reg = irq >> 5;
+	bit = 1 << (irq % 32);
+
+	if (type == IRQT_PROBE) {
+		/* Don't mess with enabled GPIOs using preconfigured edges or
+		   GPIOs set to alternate function during probe */
+		/* TODO: support probe */
+//              if ((GPIO_IRQ_rising_edge[idx] | GPIO_IRQ_falling_edge[idx]) &
+//                  GPIO_bit(gpio))
+//                      return 0;
+//              if (GAFR(gpio) & (0x3 << (((gpio) & 0xf)*2)))
+//                      return 0;
+//              type = __IRQT_RISEDGE | __IRQT_FALEDGE;
+	}
+
+	GIUS(reg) |= bit;
+	DDIR(reg) &= ~(bit);
+
+	DEBUG_IRQ("setting type of irq %d to ", _irq);
+
+	if (type & __IRQT_RISEDGE) {
+		DEBUG_IRQ("rising edges\n");
+		irq_type = 0x0;
+	}
+	if (type & __IRQT_FALEDGE) {
+		DEBUG_IRQ("falling edges\n");
+		irq_type = 0x1;
+	}
+	if (type & __IRQT_LOWLVL) {
+		DEBUG_IRQ("low level\n");
+		irq_type = 0x3;
+	}
+	if (type & __IRQT_HIGHLVL) {
+		DEBUG_IRQ("high level\n");
+		irq_type = 0x2;
+	}
+
+	if (irq % 32 < 16) {
+		ICR1(reg) = (ICR1(reg) & ~(0x3 << ((irq % 16) * 2))) |
+		    (irq_type << ((irq % 16) * 2));
+	} else {
+		ICR2(reg) = (ICR2(reg) & ~(0x3 << ((irq % 16) * 2))) |
+		    (irq_type << ((irq % 16) * 2));
+	}
+
+	return 0;
+
+}
+
+static void
+imx_gpio_ack_irq(unsigned int irq)
+{
+	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	ISR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
+}
+
+static void
+imx_gpio_mask_irq(unsigned int irq)
+{
+	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	IMR(IRQ_TO_REG(irq)) &= ~( 1 << ((irq - IRQ_GPIOA(0)) % 32));
+}
+
+static void
+imx_gpio_unmask_irq(unsigned int irq)
+{
+	DEBUG_IRQ("%s: irq %d\n", __FUNCTION__, irq);
+	IMR(IRQ_TO_REG(irq)) |= 1 << ((irq - IRQ_GPIOA(0)) % 32);
+}
+
+static void
+imx_gpio_handler(unsigned int mask, unsigned int irq,
+                 struct irqdesc *desc, struct pt_regs *regs)
+{
+	desc = irq_desc + irq;
+	while (mask) {
+		if (mask & 1) {
+			DEBUG_IRQ("handling irq %d\n", irq);
+			desc->handle(irq, desc, regs);
+		}
+		irq++;
+		desc++;
+		mask >>= 1;
+	}
+}
+
+static void
+imx_gpioa_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
+			struct pt_regs *regs)
+{
+	unsigned int mask, irq;
+
+	mask = ISR(0);
+	irq = IRQ_GPIOA(0);
+	imx_gpio_handler(mask, irq, desc, regs);
+}
+
+static void
+imx_gpiob_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
+			struct pt_regs *regs)
+{
+	unsigned int mask, irq;
+
+	mask = ISR(1);
+	irq = IRQ_GPIOB(0);
+	imx_gpio_handler(mask, irq, desc, regs);
+}
+
+static void
+imx_gpioc_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
+			struct pt_regs *regs)
+{
+	unsigned int mask, irq;
+
+	mask = ISR(2);
+	irq = IRQ_GPIOC(0);
+	imx_gpio_handler(mask, irq, desc, regs);
+}
+
+static void
+imx_gpiod_demux_handler(unsigned int irq_unused, struct irqdesc *desc,
+			struct pt_regs *regs)
+{
+	unsigned int mask, irq;
+
+	mask = ISR(3);
+	irq = IRQ_GPIOD(0);
+	imx_gpio_handler(mask, irq, desc, regs);
+}
+
+static struct irqchip imx_internal_chip = {
+	.ack = imx_mask_irq,
+	.mask = imx_mask_irq,
+	.unmask = imx_unmask_irq,
+};
+
+static struct irqchip imx_gpio_chip = {
+	.ack = imx_gpio_ack_irq,
+	.mask = imx_gpio_mask_irq,
+	.unmask = imx_gpio_unmask_irq,
+	.type = imx_gpio_irq_type,
+};
+
+void __init
+imx_init_irq(void)
+{
+	unsigned int irq;
+
+	DEBUG_IRQ("Initializing imx interrupts\n");
+
+	/* Mask all interrupts initially */
+	IMR(0) = 0;
+	IMR(1) = 0;
+	IMR(2) = 0;
+	IMR(3) = 0;
+
+	for (irq = 0; irq < IMX_IRQS; irq++) {
+		set_irq_chip(irq, &imx_internal_chip);
+		set_irq_handler(irq, do_level_IRQ);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+
+	for (irq = IRQ_GPIOA(0); irq < IRQ_GPIOD(32); irq++) {
+		set_irq_chip(irq, &imx_gpio_chip);
+		set_irq_handler(irq, do_edge_IRQ);
+		set_irq_flags(irq, IRQF_VALID);
+	}
+
+	set_irq_chained_handler(GPIO_INT_PORTA, imx_gpioa_demux_handler);
+	set_irq_chained_handler(GPIO_INT_PORTB, imx_gpiob_demux_handler);
+	set_irq_chained_handler(GPIO_INT_PORTC, imx_gpioc_demux_handler);
+	set_irq_chained_handler(GPIO_INT_PORTD, imx_gpiod_demux_handler);
+
+	/* Disable all interrupts initially. */
+	/* In IMX this is done in the bootloader. */
+}

arch/arm/mach-imx/leds-mx1ads.c

+/*
+ * linux/arch/arm/mach-imx/leds-mx1ads.c
+ *
+ * Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
+ *
+ * Original (leds-footbridge.c) by Russell King
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+#include <asm/hardware.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/leds.h>
+#include <asm/mach-types.h>
+#include "leds.h"
+
+/*
+ * The MX1ADS Board has only one usable LED,
+ * so select only the timer led or the
+ * cpu usage led
+ */
+void
+mx1ads_leds_event(led_event_t ledevt)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	switch (ledevt) {
+#ifdef CONFIG_LEDS_CPU
+	case led_idle_start:
+		DR(0) &= ~(1<<2);
+		break;
+
+	case led_idle_end:
+		DR(0) |= 1<<2;
+		break;
+#endif
+
+#ifdef CONFIG_LEDS_TIMER
+	case led_timer:
+		DR(0) ^= 1<<2;
+#endif
+	default:
+		break;
+	}
+	local_irq_restore(flags);
+}

arch/arm/mach-imx/leds.c

+/*
+ * linux/arch/arm/mach-imx/leds.h
+ *
+ * Copyright (C) 2004 Sascha Hauer <sascha@saschahauer.de>
+ *
+ *
+ * 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/kernel.h>
+#include <linux/init.h>
+
+#include <asm/leds.h>
+#include <asm/mach-types.h>
+
+#include "leds.h"
+
+static int __init
+leds_init(void)
+{
+	if (machine_is_mx1ads()) {
+		leds_event = mx1ads_leds_event;
+	}
+
+	return 0;
+}
+
+__initcall(leds_init);

arch/arm/mach-imx/leds.h

+/*
+ * include/asm-arm/arch-imx/leds.h
+ *
+ * Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
+ *
+ * blinky lights for IMX-based systems
+ *
+ */
+extern void mx1ads_leds_event(led_event_t evt);

arch/arm/mach-imx/mx1ads.c

+/*
+ * arch/arm/mach-imx/mx1ads.c
+ *
+ * Initially based on:
+ *	linux-2.6.7-imx/arch/arm/mach-imx/scb9328.c
+ *	Copyright (c) 2004 Sascha Hauer <sascha@saschahauer.de>
+ *
+ * 2004 (c) MontaVista Software, Inc.
+ *
+ * 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/device.h>
+#include <linux/init.h>
+#include <asm/system.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+#include <linux/interrupt.h>
+#include "generic.h"
+#include <asm/serial.h>
+
+static struct resource mx1ads_resources[] = {
+	[0] = {
+		.start	= IMX_CS4_VIRT,
+		.end	= IMX_CS4_VIRT + 16,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= 13,
+		.end	= 13,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device mx1ads_device = {
+	.name		= "mx1ads",
+	.num_resources	= ARRAY_SIZE(mx1ads_resources),
+	.resource	= mx1ads_resources,
+};
+
+static struct platform_device *devices[] __initdata = {
+	&mx1ads_device,
+};
+
+static void __init
+mx1ads_init(void)
+{
+#ifdef CONFIG_LEDS
+	imx_gpio_mode(GPIO_PORTA | GPIO_OUT | GPIO_GPIO | 2);
+#endif
+	platform_add_devices(devices, ARRAY_SIZE(devices));
+}
+
+static struct map_desc mx1ads_io_desc[] __initdata = {
+	/* virtual     physical    length      type */
+	{IMX_CS0_VIRT, IMX_CS0_PHYS, IMX_CS0_SIZE, MT_DEVICE},
+	{IMX_CS1_VIRT, IMX_CS1_PHYS, IMX_CS1_SIZE, MT_DEVICE},
+	{IMX_CS2_VIRT, IMX_CS2_PHYS, IMX_CS2_SIZE, MT_DEVICE},
+	{IMX_CS3_VIRT, IMX_CS3_PHYS, IMX_CS3_SIZE, MT_DEVICE},
+	{IMX_CS4_VIRT, IMX_CS4_PHYS, IMX_CS4_SIZE, MT_DEVICE},
+	{IMX_CS5_VIRT, IMX_CS5_PHYS, IMX_CS5_SIZE, MT_DEVICE},
+};
+
+static void __init
+mx1ads_map_io(void)
+{
+	imx_map_io();
+	iotable_init(mx1ads_io_desc, ARRAY_SIZE(mx1ads_io_desc));
+}
+
+MACHINE_START(MX1ADS, "Motorola MX1ADS")
+	MAINTAINER("Sascha Hauer, Pengutronix")
+	BOOT_MEM(0x08000000, 0x00200000, 0xe0200000)
+	BOOT_PARAMS(0x08000100)
+	MAPIO(mx1ads_map_io)
+	INITIRQ(imx_init_irq)
+	INITTIME(imx_init_time)
+	INIT_MACHINE(mx1ads_init)
+MACHINE_END

arch/arm/mach-imx/time.c

+/*
+ *  linux/arch/arm/mach-imx/time.c
+ *
+ *  Copyright (C) 2000-2001 Deep Blue Solutions
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *
+ * 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/config.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/leds.h>
+#include <asm/irq.h>
+#include <asm/mach/time.h>
+
+/* Use timer 1 as system timer */
+#define TIMER_BASE IMX_TIM1_BASE
+
+/*
+ * Returns number of ms since last clock interrupt.  Note that interrupts
+ * will have been disabled by do_gettimeoffset()
+ */
+static unsigned long
+imx_gettimeoffset(void)
+{
+	unsigned long ticks;
+
+	/*
+	 * Get the current number of ticks.  Note that there is a race
+	 * condition between us reading the timer and checking for
+	 * an interrupt.  We get around this by ensuring that the
+	 * counter has not reloaded between our two reads.
+	 */
+	ticks = IMX_TCR(TIMER_BASE);
+
+	/*
+	 * Interrupt pending?  If so, we've reloaded once already.
+	 */
+	if (IMX_TSTAT(TIMER_BASE) & TSTAT_COMP)
+		ticks += LATCH;
+
+	/*
+	 * Convert the ticks to usecs
+	 */
+	return (1000000 / CLK32) * ticks;
+}
+
+/*
+ * IRQ handler for the timer
+ */
+static irqreturn_t
+imx_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	/* clear the interrupt */
+	if (IMX_TSTAT(TIMER_BASE))
+		IMX_TSTAT(TIMER_BASE) = 0;
+
+	timer_tick(regs);
+	return IRQ_HANDLED;
+}
+
+static struct irqaction imx_timer_irq = {
+	.name		= "i.MX Timer Tick",
+	.flags		= SA_INTERRUPT,
+	.handler	= imx_timer_interrupt
+};
+
+/*
+ * Set up timer interrupt, and return the current time in seconds.
+ */
+void __init
+imx_init_time(void)
+{
+	/*
+	 * Initialise to a known state (all timers off, and timing reset)
+	 */
+	IMX_TCTL(TIMER_BASE) = 0;
+	IMX_TPRER(TIMER_BASE) = 0;
+	IMX_TCMP(TIMER_BASE) = LATCH;
+	IMX_TCTL(TIMER_BASE) = TCTL_CLK_32 | TCTL_IRQEN | TCTL_TEN;
+
+	/*
+	 * Make irqs happen for the system timer
+	 */
+	setup_irq(TIM1_INT, &imx_timer_irq);
+	gettimeoffset = imx_gettimeoffset;
+}

arch/arm/mm/Kconfig

@@ -59,7 +59,7 @@ config CPU_ARM720T
 # ARM920T
 config CPU_ARM920T
 	bool "Support ARM920T processor" if !ARCH_S3C2410
-	depends on ARCH_INTEGRATOR || ARCH_S3C2410
+	depends on ARCH_INTEGRATOR || ARCH_S3C2410 || ARCH_IMX
 	default y if ARCH_S3C2410
 	select CPU_32v4
 	select CPU_ABRT_EV4T

include/asm-arm/arch-imx/dma.h

+/*
+ *  linux/include/asm-arm/imxads/dma.h
+ *
+ *  Copyright (C) 1997,1998 Russell King
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H
+
+#define MAX_DMA_ADDRESS		0xffffffff
+
+#define MAX_DMA_CHANNELS	0
+
+/*
+ * DMA registration
+ */
+
+typedef enum {
+	DMA_PRIO_HIGH = 0,
+	DMA_PRIO_MEDIUM = 3,
+	DMA_PRIO_LOW = 6
+} imx_dma_prio;
+
+int imx_request_dma(char *name, imx_dma_prio prio,
+		    void (*irq_handler) (int, void *, struct pt_regs *),
+		    void (*err_handler) (int, void *, struct pt_regs *),
+		    void *data);
+
+void imx_free_dma(int dma_ch);
+
+
+#define DMA_REQ_UART3_T        2
+#define DMA_REQ_UART3_R        3
+#define DMA_REQ_SSI2_T         4
+#define DMA_REQ_SSI2_R         5
+#define DMA_REQ_CSI_STAT       6
+#define DMA_REQ_CSI_R          7
+#define DMA_REQ_MSHC           8
+#define DMA_REQ_DSPA_DCT_DOUT  9
+#define DMA_REQ_DSPA_DCT_DIN  10
+#define DMA_REQ_DSPA_MAC      11
+#define DMA_REQ_EXT           12
+#define DMA_REQ_SDHC          13
+#define DMA_REQ_SPI1_R        14
+#define DMA_REQ_SPI1_T        15
+#define DMA_REQ_SSI_T         16
+#define DMA_REQ_SSI_R         17
+#define DMA_REQ_ASP_DAC       18
+#define DMA_REQ_ASP_ADC       19
+#define DMA_REQ_USP_EP(x)    (20+(x))
+#define DMA_REQ_SPI2_R        26
+#define DMA_REQ_SPI2_T        27
+#define DMA_REQ_UART2_T       28
+#define DMA_REQ_UART2_R       29
+#define DMA_REQ_UART1_T       30
+#define DMA_REQ_UART1_R       31
+
+#endif				/* _ASM_ARCH_DMA_H */

include/asm-arm/arch-imx/hardware.h

+/*
+ *  linux/include/asm-arm/arch-imx/hardware.h
+ *
+ *  Copyright (C) 1999 ARM Limited.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include "imx-regs.h"
+
+#ifndef __ASSEMBLY__
+# define __REG(x)	(*((volatile u32 *)IO_ADDRESS(x)))
+
+# define __REG2(x,y)	\
+	( __builtin_constant_p(y) ? (__REG((x) + (y))) \
+			  : (*(volatile u32 *)((u32)&__REG(x) + (y))) )
+#endif
+
+/*
+ * Memory map
+ */
+
+#define IMX_IO_PHYS		0x00200000
+#define IMX_IO_SIZE		0x00100000
+#define IMX_IO_BASE		0xe0000000
+
+#define IMX_CS0_PHYS		0x10000000
+#define IMX_CS0_SIZE		0x02000000
+#define IMX_CS0_VIRT		0xe8000000
+
+#define IMX_CS1_PHYS		0x12000000
+#define IMX_CS1_SIZE		0x01000000
+#define IMX_CS1_VIRT		0xea000000
+
+#define IMX_CS2_PHYS		0x13000000
+#define IMX_CS2_SIZE		0x01000000
+#define IMX_CS2_VIRT		0xeb000000
+
+#define IMX_CS3_PHYS		0x14000000
+#define IMX_CS3_SIZE		0x01000000
+#define IMX_CS3_VIRT		0xec000000
+
+#define IMX_CS4_PHYS		0x15000000
+#define IMX_CS4_SIZE		0x01000000
+#define IMX_CS4_VIRT		0xed000000
+
+#define IMX_CS5_PHYS		0x16000000
+#define IMX_CS5_SIZE		0x01000000
+#define IMX_CS5_VIRT		0xee000000
+
+#define IMX_FB_VIRT		0xF1000000
+#define IMX_FB_SIZE		(256*1024)
+
+/* macro to get at IO space when running virtually */
+#define IO_ADDRESS(x) ((x) | IMX_IO_BASE)
+
+#ifndef __ASSEMBLY__
+/*
+ * Handy routine to set GPIO functions
+ */
+extern void imx_gpio_mode( int gpio_mode );
+
+/* get frequencies in Hz */
+extern unsigned int imx_get_system_clk(void);
+extern unsigned int imx_get_mcu_clk(void);
+extern unsigned int imx_get_perclk1(void); /* UART[12], Timer[12], PWM */
+extern unsigned int imx_get_perclk2(void); /* LCD, SD, SPI[12]         */
+extern unsigned int imx_get_perclk3(void); /* SSI                      */
+extern unsigned int imx_get_hclk(void);    /* SDRAM, CSI, Memory Stick,*/
+                                           /* I2C, DMA                 */
+#endif
+
+#define MAXIRQNUM                       62
+#define MAXFIQNUM                       62
+#define MAXSWINUM                       62
+
+/*
+ * Use SDRAM for memory
+ */
+#define MEM_SIZE		0x01000000
+
+#ifdef CONFIG_ARCH_MX1ADS
+#include "mx1ads.h"
+#endif
+
+#endif

include/asm-arm/arch-imx/io.h

+/*
+ *  linux/include/asm-arm/arch-imxads/io.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(a)       (a)
+#define __mem_pci(a)  (a)
+
+#endif

include/asm-arm/arch-imx/irq.h

+/*
+ *  linux/include/asm-arm/arch-imxads/irq.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#define fixup_irq(i)	(i)

include/asm-arm/arch-imx/irqs.h

+/*
+ *  linux/include/asm-arm/arch-imxads/irqs.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __ARM_IRQS_H__
+#define __ARM_IRQS_H__
+
+/* Use the imx definitions */
+#include <asm/arch/hardware.h>
+
+/*
+ *  IMX Interrupt numbers
+ *
+ */
+#define INT_SOFTINT                 0
+#define CSI_INT                     6
+#define DSPA_MAC_INT                7
+#define DSPA_INT                    8
+#define COMP_INT                    9
+#define MSHC_XINT                   10
+#define GPIO_INT_PORTA              11
+#define GPIO_INT_PORTB              12
+#define GPIO_INT_PORTC              13
+#define LCDC_INT                    14
+#define SIM_INT                     15
+#define SIM_DATA_INT                16
+#define RTC_INT                     17
+#define RTC_SAMINT                  18
+#define UART2_MINT_PFERR            19
+#define UART2_MINT_RTS              20
+#define UART2_MINT_DTR              21
+#define UART2_MINT_UARTC            22
+#define UART2_MINT_TX               23
+#define UART2_MINT_RX               24
+#define UART1_MINT_PFERR            25
+#define UART1_MINT_RTS              26
+#define UART1_MINT_DTR              27
+#define UART1_MINT_UARTC            28
+#define UART1_MINT_TX               29
+#define UART1_MINT_RX               30
+#define VOICE_DAC_INT               31
+#define VOICE_ADC_INT               32
+#define PEN_DATA_INT                33
+#define PWM_INT                     34
+#define SDHC_INT                    35
+#define I2C_INT                     39
+#define CSPI_INT                    41
+#define SSI_TX_INT                  42
+#define SSI_TX_ERR_INT              43
+#define SSI_RX_INT                  44
+#define SSI_RX_ERR_INT              45
+#define TOUCH_INT                   46
+#define USBD_INT0                   47
+#define USBD_INT1                   48
+#define USBD_INT2                   49
+#define USBD_INT3                   50
+#define USBD_INT4                   51
+#define USBD_INT5                   52
+#define USBD_INT6                   53
+#define BTSYS_INT                   55
+#define BTTIM_INT                   56
+#define BTWUI_INT                   57
+#define TIM2_INT                    58
+#define TIM1_INT                    59
+#define DMA_ERR                     60
+#define DMA_INT                     61
+#define GPIO_INT_PORTD              62
+
+#define IMX_IRQS                         (64)
+
+/* note: the IMX has four gpio ports (A-D), but only
+ *       the following pins are connected to the outside
+ *       world:
+ *
+ * PORT A: bits 0-31
+ * PORT B: bits 8-31
+ * PORT C: bits 3-17
+ * PORT D: bits 6-31
+ *
+ * We map these interrupts straight on. As a result we have
+ * several holes in the interrupt mapping. We do this for two
+ * reasons:
+ *   - mapping the interrupts without holes would get
+ *     far more complicated
+ *   - Motorola could well decide to bring some processor
+ *     with more pins connected
+ */
+
+#define IRQ_GPIOA(x)  (IMX_IRQS + x)
+#define IRQ_GPIOB(x)  (IRQ_GPIOA(32) + x)
+#define IRQ_GPIOC(x)  (IRQ_GPIOB(32) + x)
+#define IRQ_GPIOD(x)  (IRQ_GPIOC(32) + x)
+
+/* decode irq number to use with IMR(x), ISR(x) and friends */
+#define IRQ_TO_REG(irq) ((irq - IMX_IRQS) >> 5)
+
+#define NR_IRQS (IRQ_GPIOD(32) + 1)
+#define IRQ_GPIO(x)
+#endif

include/asm-arm/arch-imx/memory.h

+/*
+ *  linux/include/asm-arm/arch-imx/memory.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_MMU_H
+#define __ASM_ARCH_MMU_H
+
+#define PHYS_OFFSET	(0x08000000UL)
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ *              address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ *              to an address that the kernel can use.
+ */
+#define __virt_to_bus__is_a_macro
+#define __virt_to_bus(x)	(x - PAGE_OFFSET +  PHYS_OFFSET)
+#define __bus_to_virt__is_a_macro
+#define __bus_to_virt(x)	(x -  PHYS_OFFSET + PAGE_OFFSET)
+
+#endif

include/asm-arm/arch-imx/mx1ads.h

+/*
+ * linux/include/asm-arm/arch-imx/mx1ads.h
+ *
+ * Copyright (C) 2004 Robert Schwebel, Pengutronix
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#ifndef __ASM_ARCH_MX1ADS_H
+#define __ASM_ARCH_MX1ADS_H
+
+/* ------------------------------------------------------------------------ */
+/* Memory Map for the M9328MX1ADS (MX1ADS) Board                            */
+/* ------------------------------------------------------------------------ */
+
+#define MX1ADS_FLASH_PHYS		0x10000000
+#define MX1ADS_FLASH_SIZE		(16*1024*1024)
+
+#define IMX_FB_PHYS			(0x0C000000 - 0x40000)
+
+#define CLK32 32000
+
+#endif /* __ASM_ARCH_MX1ADS_H */

include/asm-arm/arch-imx/param.h

+/*
+ *  linux/include/asm-arm/arch-imx/param.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */

include/asm-arm/arch-imx/serial.h

+/*
+ *  linux/include/asm-arm/arch-imx/serial.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_SERIAL_H
+#define __ASM_ARCH_SERIAL_H
+
+#define STD_SERIAL_PORT_DEFNS
+#define EXTRA_SERIAL_PORT_DEFNS
+
+#endif /* __ASM_ARCH_SERIAL_H */

include/asm-arm/arch-imx/system.h

+/*
+ *  linux/include/asm-arm/arch-imxads/system.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) 2000 Deep Blue Solutions Ltd
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+static void
+arch_idle(void)
+{
+	/*
+	 * This should do all the clock switching
+	 * and wait for interrupt tricks
+	 */
+	cpu_do_idle();
+}
+
+static inline void
+arch_reset(char mode)
+{
+	cpu_reset(0);
+}
+
+#endif

include/asm-arm/arch-imx/timex.h

+/*
+ *  linux/include/asm-arm/imx/timex.h
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+
+#include <asm/arch/hardware.h>
+#define CLOCK_TICK_RATE		(CLK32)
+
+#endif

include/asm-arm/arch-imx/uncompress.h

+/*
+ *  linux/include/asm-arm/arch-imxads/uncompress.h
+ *
+ *
+ *
+ *  Copyright (C) 1999 ARM Limited
+ *  Copyright (C) Shane Nay (shane@minirl.com)
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#define UART(x) (*(volatile unsigned long *)(serial_port + (x)))
+
+#define UART1_BASE 0x206000
+#define UART2_BASE 0x207000
+#define USR2 0x98
+#define USR2_TXFE (1<<14)
+#define TXR  0x40
+#define UCR1 0x80
+#define UCR1_UARTEN 1
+
+/*
+ * The following code assumes the serial port has already been
+ * initialized by the bootloader.  We search for the first enabled
+ * port in the most probable order.  If you didn't setup a port in
+ * your bootloader then nothing will appear (which might be desired).
+ *
+ * This does not append a newline
+ */
+static void
+puts(const char *s)
+{
+	unsigned long serial_port;
+
+	do {
+		serial_port = UART1_BASE;
+		if ( UART(UCR1) & UCR1_UARTEN )
+			break;
+		serial_port = UART2_BASE;
+		if ( UART(UCR1) & UCR1_UARTEN )
+			break;
+		return;
+	} while(0);
+
+	while (*s) {
+		while ( !(UART(USR2) & USR2_TXFE) )
+			barrier();
+
+		UART(TXR) = *s;
+
+		if (*s == '\n') {
+			while ( !(UART(USR2) & USR2_TXFE) )
+				barrier();
+
+			UART(TXR) = '\r';
+		}
+		s++;
+	}
+}
+
+/*
+ * nothing to do
+ */
+#define arch_decomp_setup()
+
+#define arch_decomp_wdog()

include/asm-arm/arch-imx/vmalloc.h

+/*
+ *  linux/include/asm-arm/arch-imx/vmalloc.h
+ *
+ *  Copyright (C) 2000 Russell King.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * Just any arbitrary offset to the start of the vmalloc VM area: the
+ * current 8MB value just means that there will be a 8MB "hole" after the
+ * physical memory until the kernel virtual memory starts.  That means that
+ * any out-of-bounds memory accesses will hopefully be caught.
+ * The vmalloc() routines leaves a hole of 4kB between each vmalloced
+ * area for the same reason. ;)
+ */
+#define VMALLOC_OFFSET	  (8*1024*1024)
+#define VMALLOC_START	  (((unsigned long)high_memory + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
+#define VMALLOC_VMADDR(x) ((unsigned long)(x))
+#define VMALLOC_END       (PAGE_OFFSET + 0x10000000)