ARM: 5859/1: Add nuc93x platform support

The previous nuc932 support patches have been discarded by me and because it belongs to
another SoCs series named nuc93x,at present, which included nuc931 and nuc932, I think it is
better to create a new mach-nuc93x,So I made the patch,and request your advice.Thanks!
Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -548,6 +548,15 @@ config ARCH_W90X900
 	  <http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/
 		ConsumerElectronicsIC/ARMMicrocontroller/ARMMicrocontroller>
 
+config ARCH_NUC93X
+	bool "Nuvoton NUC93X CPU"
+	select CPU_ARM926T
+	select HAVE_CLK
+	select COMMON_CLKDEV
+	help
+	  Support for Nuvoton (Winbond logic dept.) NUC93X MCU,The NUC93X is a
+	  low-power and high performance MPEG-4/JPEG multimedia controller chip.
+
 config ARCH_PNX4008
 	bool "Philips Nexperia PNX4008 Mobile"
 	select CPU_ARM926T
@@ -828,6 +837,8 @@ source "arch/arm/mach-u300/Kconfig"
 
 source "arch/arm/mach-w90x900/Kconfig"
 
+source "arch/arm/mach-nuc93x/Kconfig"
+
 source "arch/arm/mach-bcmring/Kconfig"
 
 source "arch/arm/mach-ux500/Kconfig"

arch/arm/Makefile

@@ -170,6 +170,7 @@ machine-$(CONFIG_ARCH_U300)		:= u300
 machine-$(CONFIG_ARCH_U8500)		:= ux500
 machine-$(CONFIG_ARCH_VERSATILE)	:= versatile
 machine-$(CONFIG_ARCH_W90X900)		:= w90x900
+machine-$(CONFIG_ARCH_NUC93X)		:= nuc93x
 machine-$(CONFIG_FOOTBRIDGE)		:= footbridge
 machine-$(CONFIG_ARCH_MXC91231)		:= mxc91231
 

arch/arm/mach-nuc93x/Kconfig

+if ARCH_NUC93X
+
+config CPU_NUC932
+	bool
+	help
+	  Support for NUC932 of Nuvoton NUC93X CPUs.
+
+menu "NUC932 Machines"
+
+config MACH_NUC932EVB
+	bool "Nuvoton NUC932 Evaluation Board"
+	default y
+	select CPU_NUC932
+	help
+	   Say Y here if you are using the Nuvoton NUC932EVB
+
+endmenu
+
+endif

arch/arm/mach-nuc93x/Makefile

+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-y				:= irq.o time.o dev.o cpu.o clock.o
+# NUC932 CPU support files
+
+obj-$(CONFIG_CPU_NUC932)	+= nuc932.o
+
+# machine support
+
+obj-$(CONFIG_MACH_NUC932EVB)	+= mach-nuc932evb.o

arch/arm/mach-nuc93x/Makefile.boot

+zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+

arch/arm/mach-nuc93x/clock.c

+/*
+ * linux/arch/arm/mach-nuc93x/clock.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/string.h>
+#include <linux/clk.h>
+#include <linux/spinlock.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/hardware.h>
+
+#include "clock.h"
+
+static DEFINE_SPINLOCK(clocks_lock);
+
+int clk_enable(struct clk *clk)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&clocks_lock, flags);
+	if (clk->enabled++ == 0)
+		(clk->enable)(clk, 1);
+	spin_unlock_irqrestore(&clocks_lock, flags);
+
+	return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+	unsigned long flags;
+
+	WARN_ON(clk->enabled == 0);
+
+	spin_lock_irqsave(&clocks_lock, flags);
+	if (--clk->enabled == 0)
+		(clk->enable)(clk, 0);
+	spin_unlock_irqrestore(&clocks_lock, flags);
+}
+EXPORT_SYMBOL(clk_disable);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+	return 27000000;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+void nuc93x_clk_enable(struct clk *clk, int enable)
+{
+	unsigned int clocks = clk->cken;
+	unsigned long clken;
+
+	clken = __raw_readl(NUC93X_VA_CLKPWR);
+
+	if (enable)
+		clken |= clocks;
+	else
+		clken &= ~clocks;
+
+	__raw_writel(clken, NUC93X_VA_CLKPWR);
+}
+
+void clks_register(struct clk_lookup *clks, size_t num)
+{
+	int i;
+
+	for (i = 0; i < num; i++)
+		clkdev_add(&clks[i]);
+}

arch/arm/mach-nuc93x/clock.h

+/*
+ * linux/arch/arm/mach-nuc93x/clock.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ */
+
+#include <asm/clkdev.h>
+
+void nuc93x_clk_enable(struct clk *clk, int enable);
+void clks_register(struct clk_lookup *clks, size_t num);
+
+struct clk {
+	unsigned long		cken;
+	unsigned int		enabled;
+	void			(*enable)(struct clk *, int enable);
+};
+
+#define DEFINE_CLK(_name, _ctrlbit)			\
+struct clk clk_##_name = {				\
+		.enable	= nuc93x_clk_enable,		\
+		.cken	= (1 << _ctrlbit),		\
+	}
+
+#define DEF_CLKLOOK(_clk, _devname, _conname)		\
+	{						\
+		.clk		= _clk,			\
+		.dev_id		= _devname,		\
+		.con_id		= _conname,		\
+	}
+

arch/arm/mach-nuc93x/cpu.c

+/*
+ * linux/arch/arm/mach-nuc93x/cpu.c
+ *
+ * Copyright (c) 2009 Nuvoton corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * NUC93x series cpu common support
+ *
+ * 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;version 2 of the License.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/serial_8250.h>
+#include <linux/delay.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-serial.h>
+#include <mach/regs-clock.h>
+#include <mach/regs-ebi.h>
+
+#include "cpu.h"
+#include "clock.h"
+
+/* Initial IO mappings */
+
+static struct map_desc nuc93x_iodesc[] __initdata = {
+	IODESC_ENT(IRQ),
+	IODESC_ENT(GCR),
+	IODESC_ENT(UART),
+	IODESC_ENT(TIMER),
+	IODESC_ENT(EBI),
+};
+
+/* Initial nuc932 clock declarations. */
+static DEFINE_CLK(audio, 2);
+static DEFINE_CLK(sd, 3);
+static DEFINE_CLK(jpg, 4);
+static DEFINE_CLK(video, 5);
+static DEFINE_CLK(vpost, 6);
+static DEFINE_CLK(2d, 7);
+static DEFINE_CLK(gpu, 8);
+static DEFINE_CLK(gdma, 9);
+static DEFINE_CLK(adc, 10);
+static DEFINE_CLK(uart, 11);
+static DEFINE_CLK(spi, 12);
+static DEFINE_CLK(pwm, 13);
+static DEFINE_CLK(timer, 14);
+static DEFINE_CLK(wdt, 15);
+static DEFINE_CLK(ac97, 16);
+static DEFINE_CLK(i2s, 16);
+static DEFINE_CLK(usbck, 17);
+static DEFINE_CLK(usb48, 18);
+static DEFINE_CLK(usbh, 19);
+static DEFINE_CLK(i2c, 20);
+static DEFINE_CLK(ext, 0);
+
+static struct clk_lookup nuc932_clkregs[] = {
+       DEF_CLKLOOK(&clk_audio, "nuc932-audio", NULL),
+       DEF_CLKLOOK(&clk_sd, "nuc932-sd", NULL),
+       DEF_CLKLOOK(&clk_jpg, "nuc932-jpg", "NULL"),
+       DEF_CLKLOOK(&clk_video, "nuc932-video", "NULL"),
+       DEF_CLKLOOK(&clk_vpost, "nuc932-vpost", NULL),
+       DEF_CLKLOOK(&clk_2d, "nuc932-2d", NULL),
+       DEF_CLKLOOK(&clk_gpu, "nuc932-gpu", NULL),
+       DEF_CLKLOOK(&clk_gdma, "nuc932-gdma", "NULL"),
+       DEF_CLKLOOK(&clk_adc, "nuc932-adc", NULL),
+       DEF_CLKLOOK(&clk_uart, NULL, "uart"),
+       DEF_CLKLOOK(&clk_spi, "nuc932-spi", NULL),
+       DEF_CLKLOOK(&clk_pwm, "nuc932-pwm", NULL),
+       DEF_CLKLOOK(&clk_timer, NULL, "timer"),
+       DEF_CLKLOOK(&clk_wdt, "nuc932-wdt", NULL),
+       DEF_CLKLOOK(&clk_ac97, "nuc932-ac97", NULL),
+       DEF_CLKLOOK(&clk_i2s, "nuc932-i2s", NULL),
+       DEF_CLKLOOK(&clk_usbck, "nuc932-usbck", NULL),
+       DEF_CLKLOOK(&clk_usb48, "nuc932-usb48", NULL),
+       DEF_CLKLOOK(&clk_usbh, "nuc932-usbh", NULL),
+       DEF_CLKLOOK(&clk_i2c, "nuc932-i2c", NULL),
+       DEF_CLKLOOK(&clk_ext, NULL, "ext"),
+};
+
+/* Initial serial platform data */
+
+struct plat_serial8250_port nuc93x_uart_data[] = {
+	NUC93X_8250PORT(UART0),
+	{},
+};
+
+struct platform_device nuc93x_serial_device = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= nuc93x_uart_data,
+	},
+};
+
+/*Init NUC93x evb io*/
+
+void __init nuc93x_map_io(struct map_desc *mach_desc, int mach_size)
+{
+	unsigned long idcode = 0x0;
+
+	iotable_init(mach_desc, mach_size);
+	iotable_init(nuc93x_iodesc, ARRAY_SIZE(nuc93x_iodesc));
+
+	idcode = __raw_readl(NUC93XPDID);
+	if (idcode == NUC932_CPUID)
+		printk(KERN_INFO "CPU type 0x%08lx is NUC910\n", idcode);
+	else
+		printk(KERN_ERR "CPU type detect error!\n");
+
+}
+
+/*Init NUC93x clock*/
+
+void __init nuc93x_init_clocks(void)
+{
+	clks_register(nuc932_clkregs, ARRAY_SIZE(nuc932_clkregs));
+}
+

arch/arm/mach-nuc93x/cpu.h

+/*
+ * arch/arm/mach-nuc93x/cpu.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Header file for NUC93X CPU support
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#define IODESC_ENT(y)					\
+{							\
+	.virtual = (unsigned long)NUC93X_VA_##y,	\
+	.pfn     = __phys_to_pfn(NUC93X_PA_##y),	\
+	.length  = NUC93X_SZ_##y,			\
+	.type    = MT_DEVICE,				\
+}
+
+#define NUC93X_8250PORT(name)					\
+{								\
+	.membase	= name##_BA,				\
+	.mapbase	= name##_PA,				\
+	.irq		= IRQ_##name,				\
+	.uartclk	= 57139200,				\
+	.regshift	= 2,					\
+	.iotype		= UPIO_MEM,				\
+	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,	\
+}
+
+/*Cpu identifier register*/
+
+#define NUC93XPDID	NUC93X_VA_GCR
+#define NUC932_CPUID	0x29550091
+
+/* extern file from cpu.c */
+
+extern void nuc93x_clock_source(struct device *dev, unsigned char *src);
+extern void nuc93x_init_clocks(void);
+extern void nuc93x_map_io(struct map_desc *mach_desc, int mach_size);
+extern void nuc93x_board_init(struct platform_device **device, int size);
+extern struct platform_device nuc93x_serial_device;
+

arch/arm/mach-nuc93x/dev.c

+/*
+ * linux/arch/arm/mach-nuc93x/dev.c
+ *
+ * Copyright (C) 2009 Nuvoton corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach-types.h>
+
+#include "cpu.h"
+
+/*Here should be your evb resourse,such as LCD*/
+
+static struct platform_device *nuc93x_public_dev[] __initdata = {
+	&nuc93x_serial_device,
+};
+
+/* Provide adding specific CPU platform devices API */
+
+void __init nuc93x_board_init(struct platform_device **device, int size)
+{
+	platform_add_devices(device, size);
+	platform_add_devices(nuc93x_public_dev, ARRAY_SIZE(nuc93x_public_dev));
+}
+

arch/arm/mach-nuc93x/include/mach/clkdev.h

+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif

arch/arm/mach-nuc93x/include/mach/entry-macro.S

+/*
+ * arch/arm/mach-nuc93x/include/mach/entry-macro.S
+ *
+ * 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 <mach/hardware.h>
+#include <mach/regs-irq.h>
+
+	.macro  get_irqnr_preamble, base, tmp
+	.endm
+
+	.macro  arch_ret_to_user, tmp1, tmp2
+	.endm
+
+	.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+		mov	\base, #AIC_BA
+
+		ldr	\irqnr, [ \base, #AIC_IPER]
+		ldr	\irqnr, [ \base, #AIC_ISNR]
+		cmp	\irqnr, #0
+
+	.endm
+
+	/* currently don't need an disable_fiq macro */
+
+	.macro	disable_fiq
+	.endm

arch/arm/mach-nuc93x/include/mach/hardware.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/hardware.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include <mach/map.h>
+
+#endif /* __ASM_ARCH_HARDWARE_H */

arch/arm/mach-nuc93x/include/mach/io.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/io.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT	0xffffffff
+
+/*
+ * 1:1 mapping for ioremapped regions.
+ */
+
+#define __mem_pci(a)	(a)
+#define __io(a)		__typesafe_io(a)
+
+#endif

arch/arm/mach-nuc93x/include/mach/irqs.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/irqs.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#define NUC93X_IRQ(x)	(x)
+
+/* Main cpu interrupts */
+
+#define IRQ_WDT		NUC93X_IRQ(1)
+#define IRQ_IRQ0	NUC93X_IRQ(2)
+#define IRQ_IRQ1	NUC93X_IRQ(3)
+#define IRQ_IRQ2	NUC93X_IRQ(4)
+#define IRQ_IRQ3	NUC93X_IRQ(5)
+#define IRQ_USBH	NUC93X_IRQ(6)
+#define IRQ_APU		NUC93X_IRQ(7)
+#define IRQ_VPOST	NUC93X_IRQ(8)
+#define IRQ_ADC		NUC93X_IRQ(9)
+#define IRQ_UART0	NUC93X_IRQ(10)
+#define IRQ_TIMER0	NUC93X_IRQ(11)
+#define IRQ_GPU0	NUC93X_IRQ(12)
+#define IRQ_GPU1	NUC93X_IRQ(13)
+#define IRQ_GPU2	NUC93X_IRQ(14)
+#define IRQ_GPU3	NUC93X_IRQ(15)
+#define IRQ_GPU4	NUC93X_IRQ(16)
+#define IRQ_VIN		NUC93X_IRQ(17)
+#define IRQ_USBD	NUC93X_IRQ(18)
+#define IRQ_VRAMLD	NUC93X_IRQ(19)
+#define IRQ_GDMA0	NUC93X_IRQ(20)
+#define IRQ_GDMA1	NUC93X_IRQ(21)
+#define IRQ_SDIO	NUC93X_IRQ(22)
+#define IRQ_FMI		NUC93X_IRQ(22)
+#define IRQ_JPEG	NUC93X_IRQ(23)
+#define IRQ_SPI0	NUC93X_IRQ(24)
+#define IRQ_SPI1	NUC93X_IRQ(25)
+#define IRQ_RTC		NUC93X_IRQ(26)
+#define IRQ_PWM0	NUC93X_IRQ(27)
+#define IRQ_PWM1	NUC93X_IRQ(28)
+#define IRQ_PWM2	NUC93X_IRQ(29)
+#define IRQ_PWM3	NUC93X_IRQ(30)
+#define IRQ_I2SAC97	NUC93X_IRQ(31)
+#define IRQ_CAP0	IRQ_PWM0
+#define IRQ_CAP1	IRQ_PWM1
+#define IRQ_CAP2	IRQ_PWM2
+#define IRQ_CAP3	IRQ_PWM3
+#define NR_IRQS		(IRQ_I2SAC97 + 1)
+
+#endif /* __ASM_ARCH_IRQ_H */

arch/arm/mach-nuc93x/include/mach/map.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/map.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#ifndef __ASM_ARCH_MAP_H
+#define __ASM_ARCH_MAP_H
+
+#define MAP_OFFSET	(0xfff00000)
+#define CLK_OFFSET	(0x10)
+
+#ifndef __ASSEMBLY__
+#define NUC93X_ADDR(x)	((void __iomem *)(0xF0000000 + ((x)&(~MAP_OFFSET))))
+#else
+#define NUC93X_ADDR(x)	(0xF0000000 + ((x)&(~MAP_OFFSET)))
+#endif
+
+ /*
+  * nuc932 hardware register definition
+  */
+
+#define NUC93X_PA_IRQ		(0xFFF83000)
+#define NUC93X_PA_GCR		(0xFFF00000)
+#define NUC93X_PA_EBI		(0xFFF01000)
+#define NUC93X_PA_UART		(0xFFF80000)
+#define NUC93X_PA_TIMER		(0xFFF81000)
+#define NUC93X_PA_GPIO		(0xFFF84000)
+#define NUC93X_PA_GDMA		(0xFFF03000)
+#define NUC93X_PA_USBHOST	(0xFFF0d000)
+#define NUC93X_PA_I2C		(0xFFF89000)
+#define NUC93X_PA_LCD		(0xFFF06000)
+#define NUC93X_PA_GE		(0xFFF05000)
+#define NUC93X_PA_ADC		(0xFFF85000)
+#define NUC93X_PA_RTC		(0xFFF87000)
+#define NUC93X_PA_PWM		(0xFFF82000)
+#define NUC93X_PA_ACTL		(0xFFF0a000)
+#define NUC93X_PA_USBDEV	(0xFFF0C000)
+#define NUC93X_PA_JEPEG		(0xFFF0e000)
+#define NUC93X_PA_CACHE_T	(0xFFF60000)
+#define NUC93X_PA_VRAM		(0xFFF0b000)
+#define NUC93X_PA_DMAC		(0xFFF09000)
+#define NUC93X_PA_I2SM		(0xFFF08000)
+#define NUC93X_PA_CACHE		(0xFFF02000)
+#define NUC93X_PA_GPU		(0xFFF04000)
+#define NUC93X_PA_VIDEOIN	(0xFFF07000)
+#define NUC93X_PA_SPI0		(0xFFF86000)
+#define NUC93X_PA_SPI1		(0xFFF88000)
+
+ /*
+  * nuc932 virtual address mapping.
+  * interrupt controller is the first thing we put in, to make
+  * the assembly code for the irq detection easier
+  */
+
+#define NUC93X_VA_IRQ		NUC93X_ADDR(0x00000000)
+#define NUC93X_SZ_IRQ		SZ_4K
+
+#define NUC93X_VA_GCR		NUC93X_ADDR(NUC93X_PA_IRQ)
+#define NUC93X_VA_CLKPWR	(NUC93X_VA_GCR+CLK_OFFSET)
+#define NUC93X_SZ_GCR		SZ_4K
+
+/* EBI management */
+
+#define NUC93X_VA_EBI		NUC93X_ADDR(NUC93X_PA_EBI)
+#define NUC93X_SZ_EBI		SZ_4K
+
+/* UARTs */
+
+#define NUC93X_VA_UART		NUC93X_ADDR(NUC93X_PA_UART)
+#define NUC93X_SZ_UART		SZ_4K
+
+/* Timers */
+
+#define NUC93X_VA_TIMER	NUC93X_ADDR(NUC93X_PA_TIMER)
+#define NUC93X_SZ_TIMER	SZ_4K
+
+/* GPIO ports */
+
+#define NUC93X_VA_GPIO		NUC93X_ADDR(NUC93X_PA_GPIO)
+#define NUC93X_SZ_GPIO		SZ_4K
+
+/* GDMA control */
+
+#define NUC93X_VA_GDMA		NUC93X_ADDR(NUC93X_PA_GDMA)
+#define NUC93X_SZ_GDMA		SZ_4K
+
+/* I2C hardware controller */
+
+#define NUC93X_VA_I2C		NUC93X_ADDR(NUC93X_PA_I2C)
+#define NUC93X_SZ_I2C		SZ_4K
+
+/* LCD controller*/
+
+#define NUC93X_VA_LCD		NUC93X_ADDR(NUC93X_PA_LCD)
+#define NUC93X_SZ_LCD		SZ_4K
+
+/* 2D controller*/
+
+#define NUC93X_VA_GE		NUC93X_ADDR(NUC93X_PA_GE)
+#define NUC93X_SZ_GE		SZ_4K
+
+/* ADC */
+
+#define NUC93X_VA_ADC		NUC93X_ADDR(NUC93X_PA_ADC)
+#define NUC93X_SZ_ADC		SZ_4K
+
+/* RTC */
+
+#define NUC93X_VA_RTC		NUC93X_ADDR(NUC93X_PA_RTC)
+#define NUC93X_SZ_RTC		SZ_4K
+
+/* Pulse Width Modulation(PWM) Registers */
+
+#define NUC93X_VA_PWM		NUC93X_ADDR(NUC93X_PA_PWM)
+#define NUC93X_SZ_PWM		SZ_4K
+
+/* Audio Controller controller */
+
+#define NUC93X_VA_ACTL		NUC93X_ADDR(NUC93X_PA_ACTL)
+#define NUC93X_SZ_ACTL		SZ_4K
+
+/* USB Device port */
+
+#define NUC93X_VA_USBDEV	NUC93X_ADDR(NUC93X_PA_USBDEV)
+#define NUC93X_SZ_USBDEV	SZ_4K
+
+/* USB host controller*/
+#define NUC93X_VA_USBHOST	NUC93X_ADDR(NUC93X_PA_USBHOST)
+#define NUC93X_SZ_USBHOST	SZ_4K
+
+#endif /* __ASM_ARCH_MAP_H */

arch/arm/mach-nuc93x/include/mach/memory.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/memory.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PHYS_OFFSET	UL(0x00000000)
+
+#endif

arch/arm/mach-nuc93x/include/mach/regs-clock.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/regs-clock.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#ifndef __ASM_ARCH_REGS_CLOCK_H
+#define __ASM_ARCH_REGS_CLOCK_H
+
+/* Clock Control Registers  */
+#define CLK_BA		NUC93X_VA_CLKPWR
+#define REG_CLKEN	(CLK_BA + 0x00)
+#define REG_CLKSEL	(CLK_BA + 0x04)
+#define REG_CLKDIV	(CLK_BA + 0x08)
+#define REG_PLLCON0	(CLK_BA + 0x0C)
+#define REG_PLLCON1	(CLK_BA + 0x10)
+#define REG_PMCON	(CLK_BA + 0x14)
+#define REG_IRQWAKECON	(CLK_BA + 0x18)
+#define REG_IRQWAKEFLAG	(CLK_BA + 0x1C)
+#define REG_IPSRST	(CLK_BA + 0x20)
+#define REG_CLKEN1	(CLK_BA + 0x24)
+#define REG_CLKDIV1	(CLK_BA + 0x28)
+
+/* Define PLL freq setting */
+#define PLL_DISABLE		0x12B63
+#define	PLL_66MHZ		0x2B63
+#define	PLL_100MHZ		0x4F64
+#define PLL_120MHZ		0x4F63
+#define	PLL_166MHZ		0x4124
+#define	PLL_200MHZ		0x4F24
+
+/* Define AHB:CPUFREQ ratio */
+#define	AHB_CPUCLK_1_1		0x00
+#define	AHB_CPUCLK_1_2		0x01
+#define	AHB_CPUCLK_1_4		0x02
+#define	AHB_CPUCLK_1_8		0x03
+
+/* Define APB:AHB ratio */
+#define APB_AHB_1_2		0x01
+#define APB_AHB_1_4		0x02
+#define APB_AHB_1_8		0x03
+
+/* Define clock skew */
+#define DEFAULTSKEW		0x48
+
+#endif /*  __ASM_ARCH_REGS_CLOCK_H */

arch/arm/mach-nuc93x/include/mach/regs-ebi.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/regs-ebi.h
+ *
+ * Copyright (c) 2009 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#ifndef __ASM_ARCH_REGS_EBI_H
+#define __ASM_ARCH_REGS_EBI_H
+
+/* EBI Control Registers */
+
+#define EBI_BA		NUC93X_VA_EBI
+#define REG_EBICON	(EBI_BA + 0x00)
+#define REG_ROMCON	(EBI_BA + 0x04)
+#define REG_SDCONF0	(EBI_BA + 0x08)
+#define REG_SDCONF1	(EBI_BA + 0x0C)
+#define REG_SDTIME0	(EBI_BA + 0x10)
+#define REG_SDTIME1	(EBI_BA + 0x14)
+#define REG_EXT0CON	(EBI_BA + 0x18)
+#define REG_EXT1CON	(EBI_BA + 0x1C)
+#define REG_EXT2CON	(EBI_BA + 0x20)
+#define REG_EXT3CON	(EBI_BA + 0x24)
+#define REG_EXT4CON	(EBI_BA + 0x28)
+#define REG_CKSKEW	(EBI_BA + 0x2C)
+
+#endif /*  __ASM_ARCH_REGS_EBI_H */

arch/arm/mach-nuc93x/include/mach/regs-irq.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/regs-irq.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef ___ASM_ARCH_REGS_IRQ_H
+#define ___ASM_ARCH_REGS_IRQ_H
+
+/* Advance Interrupt Controller (AIC) Registers */
+
+#define AIC_BA    		NUC93X_VA_IRQ
+
+#define REG_AIC_IRQSC		(AIC_BA+0x80)
+#define REG_AIC_GEN		(AIC_BA+0x84)
+#define REG_AIC_GASR		(AIC_BA+0x88)
+#define REG_AIC_GSCR		(AIC_BA+0x8C)
+#define REG_AIC_IRSR		(AIC_BA+0x100)
+#define REG_AIC_IASR		(AIC_BA+0x104)
+#define REG_AIC_ISR		(AIC_BA+0x108)
+#define REG_AIC_IPER		(AIC_BA+0x10C)
+#define REG_AIC_ISNR		(AIC_BA+0x110)
+#define REG_AIC_IMR		(AIC_BA+0x114)
+#define REG_AIC_OISR		(AIC_BA+0x118)
+#define REG_AIC_MECR		(AIC_BA+0x120)
+#define REG_AIC_MDCR		(AIC_BA+0x124)
+#define REG_AIC_SSCR		(AIC_BA+0x128)
+#define REG_AIC_SCCR		(AIC_BA+0x12C)
+#define REG_AIC_EOSCR		(AIC_BA+0x130)
+#define AIC_IPER		(0x10C)
+#define AIC_ISNR		(0x110)
+
+#endif /* ___ASM_ARCH_REGS_IRQ_H */

arch/arm/mach-nuc93x/include/mach/regs-serial.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/regs-serial.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef __ASM_ARM_REGS_SERIAL_H
+#define __ASM_ARM_REGS_SERIAL_H
+
+#define UART0_BA	NUC93X_VA_UART
+#define UART1_BA	(NUC93X_VA_UART+0x100)
+
+#define UART0_PA	NUC93X_PA_UART
+#define UART1_PA	(NUC93X_PA_UART+0x100)
+
+
+#ifndef __ASSEMBLY__
+
+struct nuc93x_uart_clksrc {
+	const char	*name;
+	unsigned int	divisor;
+	unsigned int	min_baud;
+	unsigned int	max_baud;
+};
+
+struct nuc93x_uartcfg {
+	unsigned char	hwport;
+	unsigned char	unused;
+	unsigned short	flags;
+	unsigned long	uart_flags;
+
+	unsigned long	ucon;
+	unsigned long	ulcon;
+	unsigned long	ufcon;
+
+	struct nuc93x_uart_clksrc *clocks;
+	unsigned int	clocks_size;
+};
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_ARM_REGS_SERIAL_H */
+

arch/arm/mach-nuc93x/include/mach/regs-timer.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/regs-timer.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#ifndef __ASM_ARCH_REGS_TIMER_H
+#define __ASM_ARCH_REGS_TIMER_H
+
+/* Timer Registers */
+
+#define TMR_BA			NUC93X_VA_TIMER
+#define REG_TCSR0		(TMR_BA+0x00)
+#define REG_TICR0		(TMR_BA+0x08)
+#define REG_TDR0		(TMR_BA+0x10)
+#define REG_TISR		(TMR_BA+0x18)
+#define REG_WTCR		(TMR_BA+0x1C)
+
+#endif /*  __ASM_ARCH_REGS_TIMER_H */

arch/arm/mach-nuc93x/include/mach/system.h

+/*
+ * arch/arm/machnuc93x/include/mach/system.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/system.h
+ *
+ * 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.
+ *
+ */
+
+#include <asm/proc-fns.h>
+
+static void arch_idle(void)
+{
+}
+
+static void arch_reset(char mode, const char *cmd)
+{
+	cpu_reset(0);
+}
+

arch/arm/mach-nuc93x/include/mach/timex.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/timex.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/timex.h
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+
+/* CLOCK_TICK_RATE Now, I don't use it. */
+
+#define CLOCK_TICK_RATE 27000000
+
+#endif /* __ASM_ARCH_TIMEX_H */

arch/arm/mach-nuc93x/include/mach/uncompress.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/uncompress.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/uncompress.h
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+/* Defines for UART registers */
+
+#include <mach/regs-serial.h>
+#include <mach/map.h>
+#include <linux/serial_reg.h>
+
+#define arch_decomp_wdog()
+
+#define TX_DONE	(UART_LSR_TEMT | UART_LSR_THRE)
+static u32 * uart_base = (u32 *)UART0_PA;
+
+static void putc(int ch)
+{
+	/* Check THRE and TEMT bits before we transmit the character.
+	 */
+	while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
+		barrier();
+
+	*uart_base = ch;
+}
+
+static inline void flush(void)
+{
+}
+
+static void arch_decomp_setup(void)
+{
+}
+
+#endif/* __ASM_NUC93X_UNCOMPRESS_H */

arch/arm/mach-nuc93x/include/mach/vmalloc.h

+/*
+ * arch/arm/mach-nuc93x/include/mach/vmalloc.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/vmalloc.h
+ *
+ * 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.
+ *
+ */
+
+#ifndef __ASM_ARCH_VMALLOC_H
+#define __ASM_ARCH_VMALLOC_H
+
+#define VMALLOC_END	  (0xE0000000)
+
+#endif /* __ASM_ARCH_VMALLOC_H */

arch/arm/mach-nuc93x/irq.c

+/*
+ * linux/arch/arm/mach-nuc93x/irq.c
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/ptrace.h>
+#include <linux/sysdev.h>
+#include <linux/io.h>
+
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+
+#include <mach/hardware.h>
+#include <mach/regs-irq.h>
+
+static void nuc93x_irq_mask(unsigned int irq)
+{
+	__raw_writel(1 << irq, REG_AIC_MDCR);
+}
+
+/*
+ * By the w90p910 spec,any irq,only write 1
+ * to REG_AIC_EOSCR for ACK
+ */
+
+static void nuc93x_irq_ack(unsigned int irq)
+{
+	__raw_writel(0x01, REG_AIC_EOSCR);
+}
+
+static void nuc93x_irq_unmask(unsigned int irq)
+{
+	__raw_writel(1 << irq, REG_AIC_MECR);
+
+}
+
+static struct irq_chip nuc93x_irq_chip = {
+	.ack	   = nuc93x_irq_ack,
+	.mask	   = nuc93x_irq_mask,
+	.unmask	   = nuc93x_irq_unmask,
+};
+
+void __init nuc93x_init_irq(void)
+{
+	int irqno;
+
+	__raw_writel(0xFFFFFFFE, REG_AIC_MDCR);
+
+	for (irqno = IRQ_WDT; irqno <= NR_IRQS; irqno++) {
+		set_irq_chip(irqno, &nuc93x_irq_chip);
+		set_irq_handler(irqno, handle_level_irq);
+		set_irq_flags(irqno, IRQF_VALID);
+	}
+}

arch/arm/mach-nuc93x/mach-nuc932evb.c

+/*
+ * linux/arch/arm/mach-w90x900/mach-nuc910evb.c
+ *
+ * Based on mach-s3c2410/mach-smdk2410.c by Jonas Dietsche
+ *
+ * Copyright (C) 2008 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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;version 2 of the License.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach-types.h>
+#include <mach/map.h>
+
+#include "nuc932.h"
+
+static void __init nuc932evb_map_io(void)
+{
+	nuc932_map_io();
+	nuc932_init_clocks();
+	nuc932_init_uartclk();
+}
+
+static void __init nuc932evb_init(void)
+{
+	nuc932_board_init();
+}
+
+MACHINE_START(NUC932EVB, "NUC932EVB")
+	/* Maintainer: Wan ZongShun */
+	.phys_io	= NUC93X_PA_UART,
+	.io_pg_offst	= (((u32)NUC93X_VA_UART) >> 18) & 0xfffc,
+	.boot_params	= 0,
+	.map_io		= nuc932evb_map_io,
+	.init_irq	= nuc93x_init_irq,
+	.init_machine	= nuc932evb_init,
+	.timer		= &nuc93x_timer,
+MACHINE_END

arch/arm/mach-nuc93x/nuc932.c

+/*
+ * linux/arch/arm/mach-nuc93x/nuc932.c
+ *
+ * Copyright (c) 2009 Nuvoton corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * NUC932 cpu support
+ *
+ * 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;version 2 of the License.
+ *
+ */
+
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+#include <asm/mach/map.h>
+#include <mach/hardware.h>
+
+#include "cpu.h"
+#include "clock.h"
+
+/* define specific CPU platform device */
+
+static struct platform_device *nuc932_dev[] __initdata = {
+};
+
+/* define specific CPU platform io map */
+
+static struct map_desc nuc932evb_iodesc[] __initdata = {
+};
+
+/*Init NUC932 evb io*/
+
+void __init nuc932_map_io(void)
+{
+	nuc93x_map_io(nuc932evb_iodesc, ARRAY_SIZE(nuc932evb_iodesc));
+}
+
+/*Init NUC932 clock*/
+
+void __init nuc932_init_clocks(void)
+{
+	nuc93x_init_clocks();
+}
+
+/*enable NUC932 uart clock*/
+
+void __init nuc932_init_uartclk(void)
+{
+	struct clk *ck_uart = clk_get(NULL, "uart");
+	BUG_ON(IS_ERR(ck_uart));
+
+	clk_enable(ck_uart);
+}
+
+/*Init NUC932 board info*/
+
+void __init nuc932_board_init(void)
+{
+	nuc93x_board_init(nuc932_dev, ARRAY_SIZE(nuc932_dev));
+}

arch/arm/mach-nuc93x/nuc932.h

+/*
+ * arch/arm/mach-nuc93x/nuc932.h
+ *
+ * Copyright (c) 2008 Nuvoton corporation
+ *
+ * Header file for NUC93x CPU support
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+struct map_desc;
+struct sys_timer;
+
+/* core initialisation functions */
+
+extern void nuc93x_init_irq(void);
+extern struct sys_timer nuc93x_timer;
+
+/* extern file from nuc932.c */
+
+extern void nuc932_board_init(void);
+extern void nuc932_init_clocks(void);
+extern void nuc932_map_io(void);
+extern void nuc932_init_uartclk(void);

arch/arm/mach-nuc93x/time.c

+/*
+ * linux/arch/arm/mach-nuc93x/time.c
+ *
+ * Copyright (c) 2009 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.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.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/leds.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+
+#include <mach/system.h>
+#include <mach/map.h>
+#include <mach/regs-timer.h>
+
+#define RESETINT	0x01
+#define PERIOD		(0x01 << 27)
+#define ONESHOT		(0x00 << 27)
+#define COUNTEN		(0x01 << 30)
+#define INTEN		(0x01 << 29)
+
+#define TICKS_PER_SEC	100
+#define PRESCALE	0x63 /* Divider = prescale + 1 */
+
+unsigned int timer0_load;
+
+static unsigned long nuc93x_gettimeoffset(void)
+{
+	return 0;
+}
+
+/*IRQ handler for the timer*/
+
+static irqreturn_t nuc93x_timer_interrupt(int irq, void *dev_id)
+{
+	timer_tick();
+	__raw_writel(0x01, REG_TISR); /* clear TIF0 */
+	return IRQ_HANDLED;
+}
+
+static struct irqaction nuc93x_timer_irq = {
+	.name		= "nuc93x Timer Tick",
+	.flags		= IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler	= nuc93x_timer_interrupt,
+};
+
+/*Set up timer reg.*/
+
+static void nuc93x_timer_setup(void)
+{
+	struct clk *ck_ext = clk_get(NULL, "ext");
+	struct clk *ck_timer = clk_get(NULL, "timer");
+	unsigned int rate, val = 0;
+
+	BUG_ON(IS_ERR(ck_ext) || IS_ERR(ck_timer));
+
+	clk_enable(ck_timer);
+	rate = clk_get_rate(ck_ext);
+	clk_put(ck_ext);
+	rate = rate / (PRESCALE + 0x01);
+
+	 /* set a known state */
+	__raw_writel(0x00, REG_TCSR0);
+	__raw_writel(RESETINT, REG_TISR);
+
+	timer0_load = (rate / TICKS_PER_SEC);
+	__raw_writel(timer0_load, REG_TICR0);
+
+	val |= (PERIOD | COUNTEN | INTEN | PRESCALE);;
+	__raw_writel(val, REG_TCSR0);
+
+}
+
+static void __init nuc93x_timer_init(void)
+{
+	nuc93x_timer_setup();
+	setup_irq(IRQ_TIMER0, &nuc93x_timer_irq);
+}
+
+struct sys_timer nuc93x_timer = {
+	.init		= nuc93x_timer_init,
+	.offset		= nuc93x_gettimeoffset,
+	.resume		= nuc93x_timer_setup
+};