[ARM] 5338/1: Add Nuvoton W90P910 Platform support

Add Nuvoton W90X900 ARM9 plat support to linux arm tree,
Now, this patch include only W90P910 EVB of W90P910 CPU,
Its driver is nothing.

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

23 files changed, 986 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 93c5bebcd10..4546f8b2ce8 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -572,6 +572,13 @@ config ARCH_MSM
 	  interface to the ARM9 modem processor which runs the baseband stack
 	  and controls some vital subsystems (clock and power control, etc).
 
+config ARCH_W90X900
+	bool "Nuvoton W90X900 CPU"
+	select CPU_ARM926T
+	help
+		Support for Nuvoton (Winbond logic dept.) ARM9 processor,You
+		can login www.mcuos.com or www.nuvoton.com to know more.
+
 endchoice
 
 source "arch/arm/mach-clps711x/Kconfig"
@@ -650,6 +657,8 @@ source "arch/arm/mach-ks8695/Kconfig"
 
 source "arch/arm/mach-msm/Kconfig"
 
+source "arch/arm/mach-w90x900/Kconfig"
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 2eca2998f93..69d3038b35e 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -143,6 +143,7 @@ endif
  machine-$(CONFIG_ARCH_MSM)	   := msm
  machine-$(CONFIG_ARCH_LOKI)       := loki
  machine-$(CONFIG_ARCH_MV78XX0)    := mv78xx0
+ machine-$(CONFIG_ARCH_W90X900)    := w90x900
 
 ifeq ($(CONFIG_ARCH_EBSA110),y)
 # This is what happens if you forget the IOCS16 line.
diff --git a/arch/arm/mach-w90x900/Kconfig b/arch/arm/mach-w90x900/Kconfig
new file mode 100644
index 00000000000..8e4178fe5ec
--- /dev/null
+++ b/arch/arm/mach-w90x900/Kconfig
@@ -0,0 +1,19 @@
+if ARCH_W90X900
+
+config CPU_W90P910
+	bool
+	help
+	  Support for W90P910 of Nuvoton W90X900 CPUs.
+
+menu "W90P910 Machines"
+
+config MACH_W90P910EVB
+	bool "Nuvoton W90P910 Evaluation Board"
+	default y
+	select CPU_W90P910
+	help
+	   Say Y here if you are using the Nuvoton W90P910EVB
+
+endmenu
+
+endif
diff --git a/arch/arm/mach-w90x900/Makefile b/arch/arm/mach-w90x900/Makefile
new file mode 100644
index 00000000000..0c0c1d63f1c
--- /dev/null
+++ b/arch/arm/mach-w90x900/Makefile
@@ -0,0 +1,15 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Object file lists.
+
+obj-y				:= irq.o time.o
+
+# W90X900 CPU support files
+
+obj-$(CONFIG_CPU_W90P910)	+= w90p910.o
+
+# machine support
+
+obj-$(CONFIG_MACH_W90P910EVB)	+= mach-w90p910evb.o
diff --git a/arch/arm/mach-w90x900/Makefile.boot b/arch/arm/mach-w90x900/Makefile.boot
new file mode 100644
index 00000000000..a057b546b6e
--- /dev/null
+++ b/arch/arm/mach-w90x900/Makefile.boot
@@ -0,0 +1,3 @@
+zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100
+
diff --git a/arch/arm/mach-w90x900/cpu.h b/arch/arm/mach-w90x900/cpu.h
new file mode 100644
index 00000000000..40ff40845df
--- /dev/null
+++ b/arch/arm/mach-w90x900/cpu.h
@@ -0,0 +1,77 @@
+/*
+ * arch/arm/mach-w90x900/cpu.h
+ *
+ * Based on linux/include/asm-arm/plat-s3c24xx/cpu.h by Ben Dooks
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Header file for W90X900 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)W90X900_VA_##y,       \
+       .pfn     = __phys_to_pfn(W90X900_PA_##y),       \
+       .length  = W90X900_SZ_##y,                      \
+       .type    = MT_DEVICE,                           \
+}
+
+/*Cpu identifier register*/
+
+#define W90X900PDID	W90X900_VA_GCR
+#define W90P910_CPUID	0x02900910
+#define W90P920_CPUID	0x02900920
+#define W90P950_CPUID	0x02900950
+#define W90N960_CPUID	0x02900960
+
+struct w90x900_uartcfg;
+struct map_desc;
+struct sys_timer;
+
+/* core initialisation functions */
+
+extern void w90x900_init_irq(void);
+extern void w90p910_init_io(struct map_desc *mach_desc, int size);
+extern void w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no);
+extern void w90p910_init_clocks(int xtal);
+extern void w90p910_map_io(struct map_desc *mach_desc, int size);
+extern struct sys_timer w90x900_timer;
+
+#define W90X900_RES(name)				\
+struct resource w90x900_##name##_resource[] = {		\
+	[0] = {						\
+		.start = name##_PA,			\
+		.end   = name##_PA + 0x0ff,		\
+		.flags = IORESOURCE_MEM,		\
+	},						\
+	[1] = {						\
+		.start = IRQ_##name,			\
+		.end   = IRQ_##name,			\
+		.flags = IORESOURCE_IRQ,		\
+	}						\
+}
+
+#define W90X900_DEVICE(devname, regname, devid, platdevname)		\
+struct platform_device w90x900_##devname = {				\
+	.name		= platdevname,					\
+	.id		= devid,					\
+	.num_resources 	= ARRAY_SIZE(w90x900_##regname##_resource),	\
+	.resource 	= w90x900_##regname##_resource,			\
+}
+
+#define W90X900_UARTCFG(port, flag, uc, ulc, ufc)	\
+{							\
+		.hwport	= port,				\
+		.flags	= flag,				\
+		.ucon	= uc,				\
+		.ulcon	= ulc,				\
+		.ufcon	= ufc,				\
+}
diff --git a/arch/arm/mach-w90x900/include/mach/entry-macro.S b/arch/arm/mach-w90x900/include/mach/entry-macro.S
new file mode 100644
index 00000000000..d39aca5be9e
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/entry-macro.S
@@ -0,0 +1,34 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/entry-macro.S
+ *
+ * Low-level IRQ helper macros for W90P910-based platforms
+ *
+ * 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
diff --git a/arch/arm/mach-w90x900/include/mach/hardware.h b/arch/arm/mach-w90x900/include/mach/hardware.h
new file mode 100644
index 00000000000..fe3c6265a46
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/hardware.h
@@ -0,0 +1,24 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/hardware.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/hardware.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_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <asm/sizes.h>
+#include <mach/map.h>
+
+#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/mach-w90x900/include/mach/io.h b/arch/arm/mach-w90x900/include/mach/io.h
new file mode 100644
index 00000000000..d96ab99df05
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/io.h
@@ -0,0 +1,30 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/io.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/io.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_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
diff --git a/arch/arm/mach-w90x900/include/mach/irqs.h b/arch/arm/mach-w90x900/include/mach/irqs.h
new file mode 100644
index 00000000000..1c583f9cbcd
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/irqs.h
@@ -0,0 +1,45 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/irqs.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/irqs.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_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+/*
+ * we keep the first set of CPU IRQs out of the range of
+ * the ISA space, so that the PC104 has them to itself
+ * and we don't end up having to do horrible things to the
+ * standard ISA drivers....
+ *
+ */
+
+#define W90X900_IRQ(x)	(x)
+
+/* Main cpu interrupts */
+
+#define IRQ_WDT		W90X900_IRQ(1)
+#define IRQ_UART0	W90X900_IRQ(7)
+#define IRQ_UART1	W90X900_IRQ(8)
+#define IRQ_UART2	W90X900_IRQ(9)
+#define IRQ_UART3	W90X900_IRQ(10)
+#define IRQ_UART4	W90X900_IRQ(11)
+#define IRQ_TIMER0	W90X900_IRQ(12)
+#define IRQ_TIMER1	W90X900_IRQ(13)
+#define IRQ_T_INT_GROUP	W90X900_IRQ(14)
+#define IRQ_ADC		W90X900_IRQ(31)
+#define NR_IRQS		(IRQ_ADC+1)
+
+#endif /* __ASM_ARCH_IRQ_H */
diff --git a/arch/arm/mach-w90x900/include/mach/map.h b/arch/arm/mach-w90x900/include/mach/map.h
new file mode 100644
index 00000000000..79320ebe614
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/map.h
@@ -0,0 +1,76 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/map.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/map.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_MAP_H
+#define __ASM_ARCH_MAP_H
+
+#ifndef __ASSEMBLY__
+#define W90X900_ADDR(x)		((void __iomem *)(0xF0000000 + (x)))
+#else
+#define W90X900_ADDR(x)		(0xF0000000 + (x))
+#endif
+
+#define AHB_IO_BASE		0xB0000000
+#define APB_IO_BASE		0xB8000000
+#define CLOCKPW_BASE		(APB_IO_BASE+0x200)
+#define AIC_IO_BASE		(APB_IO_BASE+0x2000)
+#define TIMER_IO_BASE		(APB_IO_BASE+0x1000)
+
+/*
+ * interrupt controller is the first thing we put in, to make
+ * the assembly code for the irq detection easier
+ */
+
+#define W90X900_VA_IRQ		W90X900_ADDR(0x00000000)
+#define W90X900_PA_IRQ		(0xB8002000)
+#define W90X900_SZ_IRQ		SZ_4K
+
+#define W90X900_VA_GCR		W90X900_ADDR(0x08002000)
+#define W90X900_PA_GCR		(0xB0000000)
+#define W90X900_SZ_GCR		SZ_4K
+
+/* Clock and Power management */
+
+#define W90X900_VA_CLKPWR	(W90X900_VA_GCR+0x200)
+#define W90X900_PA_CLKPWR	(0xB0000200)
+#define W90X900_SZ_CLKPWR	SZ_4K
+
+/* EBI management */
+
+#define W90X900_VA_EBI		W90X900_ADDR(0x00001000)
+#define W90X900_PA_EBI		(0xB0001000)
+#define W90X900_SZ_EBI		SZ_4K
+
+/* UARTs */
+
+#define W90X900_VA_UART		W90X900_ADDR(0x08000000)
+#define W90X900_PA_UART		(0xB8000000)
+#define W90X900_SZ_UART		SZ_4K
+
+/* Timers */
+
+#define W90X900_VA_TIMER	W90X900_ADDR(0x08001000)
+#define W90X900_PA_TIMER	(0xB8001000)
+#define W90X900_SZ_TIMER	SZ_4K
+
+/* GPIO ports */
+
+#define W90X900_VA_GPIO		W90X900_ADDR(0x08003000)
+#define W90X900_PA_GPIO		(0xB8003000)
+#define W90X900_SZ_GPIO		SZ_4K
+
+#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-w90x900/include/mach/memory.h b/arch/arm/mach-w90x900/include/mach/memory.h
new file mode 100644
index 00000000000..971b80702c2
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/memory.h
@@ -0,0 +1,23 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/memory.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/memory.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_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#define PHYS_OFFSET	UL(0x00000000)
+
+#endif
diff --git a/arch/arm/mach-w90x900/include/mach/regs-irq.h b/arch/arm/mach-w90x900/include/mach/regs-irq.h
new file mode 100644
index 00000000000..8a3185fbc9c
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/regs-irq.h
@@ -0,0 +1,51 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/regs-irq.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/regs-irq.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_REGS_IRQ_H
+#define ___ASM_ARCH_REGS_IRQ_H
+
+/* Advance Interrupt Controller (AIC) Registers */
+
+#define AIC_BA    		W90X900_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)
+
+/*16-18 bits of REG_AIC_GEN define irq(2-4) group*/
+
+#define TIMER2_IRQ		(1 << 16)
+#define TIMER3_IRQ		(1 << 17)
+#define TIMER4_IRQ		(1 << 18)
+#define TIME_GROUP_IRQ		(TIMER2_IRQ|TIMER3_IRQ|TIMER4_IRQ)
+
+#endif /* ___ASM_ARCH_REGS_IRQ_H */
diff --git a/arch/arm/mach-w90x900/include/mach/regs-serial.h b/arch/arm/mach-w90x900/include/mach/regs-serial.h
new file mode 100644
index 00000000000..f08fa0d75e1
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/regs-serial.h
@@ -0,0 +1,59 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/regs-serial.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/regs-serial.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_ARM_REGS_SERIAL_H
+#define __ASM_ARM_REGS_SERIAL_H
+
+#define UART0_BA	W90X900_VA_UART
+#define UART1_BA	(W90X900_VA_UART+0x100)
+#define UART2_BA	(W90X900_VA_UART+0x200)
+#define UART3_BA	(W90X900_VA_UART+0x300)
+#define UART4_BA	(W90X900_VA_UART+0x400)
+
+#define UART0_PA	W90X900_PA_UART
+#define UART1_PA	(W90X900_PA_UART+0x100)
+#define UART2_PA	(W90X900_PA_UART+0x200)
+#define UART3_PA	(W90X900_PA_UART+0x300)
+#define UART4_PA	(W90X900_PA_UART+0x400)
+
+#ifndef __ASSEMBLY__
+
+struct w90x900_uart_clksrc {
+	const char	*name;
+	unsigned int	divisor;
+	unsigned int	min_baud;
+	unsigned int	max_baud;
+};
+
+struct w90x900_uartcfg {
+	unsigned char	hwport;
+	unsigned char	unused;
+	unsigned short	flags;
+	unsigned long	uart_flags;
+
+	unsigned long	ucon;
+	unsigned long	ulcon;
+	unsigned long	ufcon;
+
+	struct w90x900_uart_clksrc *clocks;
+	unsigned int	clocks_size;
+};
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ASM_ARM_REGS_SERIAL_H */
+
diff --git a/arch/arm/mach-w90x900/include/mach/regs-timer.h b/arch/arm/mach-w90x900/include/mach/regs-timer.h
new file mode 100644
index 00000000000..8f390620c0e
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/regs-timer.h
@@ -0,0 +1,42 @@
+/*
+ * arch/arm/mach-w90x900/include/mach/regs-timer.h
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * Based on arch/arm/mach-s3c2410/include/mach/regs-timer.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_REGS_TIMER_H
+#define __ASM_ARCH_REGS_TIMER_H
+
+/* Timer Registers */
+
+#define TMR_BA			W90X900_VA_TIMER
+#define REG_TCSR0		(TMR_BA+0x00)
+#define REG_TCSR1		(TMR_BA+0x04)
+#define REG_TICR0		(TMR_BA+0x08)
+#define REG_TICR1		(TMR_BA+0x0C)
+#define REG_TDR0		(TMR_BA+0x10)
+#define REG_TDR1		(TMR_BA+0x14)
+#define REG_TISR		(TMR_BA+0x18)
+#define REG_WTCR		(TMR_BA+0x1C)
+#define REG_TCSR2		(TMR_BA+0x20)
+#define REG_TCSR3		(TMR_BA+0x24)
+#define REG_TICR2		(TMR_BA+0x28)
+#define REG_TICR3		(TMR_BA+0x2C)
+#define REG_TDR2		(TMR_BA+0x30)
+#define REG_TDR3		(TMR_BA+0x34)
+#define REG_TCSR4		(TMR_BA+0x40)
+#define REG_TICR4		(TMR_BA+0x48)
+#define REG_TDR4		(TMR_BA+0x50)
+
+#endif /*  __ASM_ARCH_REGS_TIMER_H */
diff --git a/arch/arm/mach-w90x900/include/mach/system.h b/arch/arm/mach-w90x900/include/mach/system.h
new file mode 100644
index 00000000000..93753f92261
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/system.h
@@ -0,0 +1,28 @@
+/*
+ * arch/arm/mach-w90x900/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)
+{
+	cpu_reset(0);
+}
+
diff --git a/arch/arm/mach-w90x900/include/mach/timex.h b/arch/arm/mach-w90x900/include/mach/timex.h
new file mode 100644
index 00000000000..164dce0b64d
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/timex.h
@@ -0,0 +1,25 @@
+/*
+ * arch/arm/mach-w90x900/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 15000000
+
+#endif /* __ASM_ARCH_TIMEX_H */
diff --git a/arch/arm/mach-w90x900/include/mach/uncompress.h b/arch/arm/mach-w90x900/include/mach/uncompress.h
new file mode 100644
index 00000000000..050d9fe5ae1
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/uncompress.h
@@ -0,0 +1,40 @@
+/*
+ * arch/arm/mach-w90x900/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>
+
+#define arch_decomp_wdog()
+
+static void putc(int ch)
+{
+}
+
+static inline void flush(void)
+{
+}
+
+static void arch_decomp_setup(void)
+{
+}
+
+#endif/* __ASM_W90X900_UNCOMPRESS_H */
diff --git a/arch/arm/mach-w90x900/include/mach/vmalloc.h b/arch/arm/mach-w90x900/include/mach/vmalloc.h
new file mode 100644
index 00000000000..2f9dfb92853
--- /dev/null
+++ b/arch/arm/mach-w90x900/include/mach/vmalloc.h
@@ -0,0 +1,23 @@
+/*
+ * arch/arm/mach-w90x900/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 */
diff --git a/arch/arm/mach-w90x900/irq.c b/arch/arm/mach-w90x900/irq.c
new file mode 100644
index 00000000000..0b4fc194729
--- /dev/null
+++ b/arch/arm/mach-w90x900/irq.c
@@ -0,0 +1,76 @@
+/*
+ * linux/arch/arm/mach-w90x900/irq.c
+ *
+ * based on linux/arch/arm/plat-s3c24xx/irq.c by Ben Dooks
+ *
+ * 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.
+ *
+ */
+
+#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 w90x900_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 w90x900_irq_ack(unsigned int irq)
+{
+	__raw_writel(0x01, REG_AIC_EOSCR);
+}
+
+static void w90x900_irq_unmask(unsigned int irq)
+{
+	unsigned long mask;
+
+	if (irq == IRQ_T_INT_GROUP) {
+		mask = __raw_readl(REG_AIC_GEN);
+		__raw_writel(TIME_GROUP_IRQ | mask, REG_AIC_GEN);
+		__raw_writel(1 << IRQ_T_INT_GROUP, REG_AIC_MECR);
+	}
+	__raw_writel(1 << irq, REG_AIC_MECR);
+}
+
+static struct irq_chip w90x900_irq_chip = {
+	.ack	   = w90x900_irq_ack,
+	.mask	   = w90x900_irq_mask,
+	.unmask	   = w90x900_irq_unmask,
+};
+
+void __init w90x900_init_irq(void)
+{
+	int irqno;
+
+	__raw_writel(0xFFFFFFFE, REG_AIC_MDCR);
+
+	for (irqno = IRQ_WDT; irqno <= IRQ_ADC; irqno++) {
+		set_irq_chip(irqno, &w90x900_irq_chip);
+		set_irq_handler(irqno, handle_level_irq);
+		set_irq_flags(irqno, IRQF_VALID);
+	}
+}
diff --git a/arch/arm/mach-w90x900/mach-w90p910evb.c b/arch/arm/mach-w90x900/mach-w90p910evb.c
new file mode 100644
index 00000000000..9307a247543
--- /dev/null
+++ b/arch/arm/mach-w90x900/mach-w90p910evb.c
@@ -0,0 +1,72 @@
+/*
+ * linux/arch/arm/mach-w90x900/mach-w90p910evb.c
+ *
+ * Based on mach-s3c2410/mach-smdk2410.c by Jonas Dietsche
+ *
+ * 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.
+ *
+ */
+
+#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 <mach/regs-serial.h>
+
+#include "cpu.h"
+
+static struct map_desc w90p910_iodesc[] __initdata = {
+};
+
+static struct w90x900_uartcfg w90p910_uartcfgs[] = {
+	W90X900_UARTCFG(0, 0, 0, 0, 0),
+	W90X900_UARTCFG(1, 0, 0, 0, 0),
+	W90X900_UARTCFG(2, 0, 0, 0, 0),
+	W90X900_UARTCFG(3, 0, 0, 0, 0),
+	W90X900_UARTCFG(4, 0, 0, 0, 0),
+};
+
+/*Here should be your evb resourse,such as LCD*/
+
+static struct platform_device *w90p910evb_dev[] __initdata = {
+};
+
+static void __init w90p910evb_map_io(void)
+{
+	w90p910_map_io(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
+	w90p910_init_clocks(0);
+	w90p910_init_uarts(w90p910_uartcfgs, ARRAY_SIZE(w90p910_uartcfgs));
+}
+
+static void __init w90p910evb_init(void)
+{
+	platform_add_devices(w90p910evb_dev, ARRAY_SIZE(w90p910evb_dev));
+}
+
+MACHINE_START(W90P910EVB, "W90P910EVB")
+	/* Maintainer: Wan ZongShun */
+	.phys_io	= W90X900_PA_UART,
+	.io_pg_offst	= (((u32)W90X900_VA_UART) >> 18) & 0xfffc,
+	.boot_params	= 0,
+	.map_io		= w90p910evb_map_io,
+	.init_irq	= w90x900_init_irq,
+	.init_machine	= w90p910evb_init,
+	.timer		= &w90x900_timer,
+MACHINE_END
diff --git a/arch/arm/mach-w90x900/time.c b/arch/arm/mach-w90x900/time.c
new file mode 100644
index 00000000000..3a69e381f31
--- /dev/null
+++ b/arch/arm/mach-w90x900/time.c
@@ -0,0 +1,80 @@
+/*
+ * linux/arch/arm/mach-w90x900/time.c
+ *
+ * Based on linux/arch/arm/plat-s3c24xx/time.c by Ben Dooks
+ *
+ * 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.
+ *
+ */
+
+#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>
+
+static unsigned long w90x900_gettimeoffset(void)
+{
+	return 0;
+}
+
+/*IRQ handler for the timer*/
+
+static irqreturn_t
+w90x900_timer_interrupt(int irq, void *dev_id)
+{
+	timer_tick();
+	__raw_writel(0x01, REG_TISR); /* clear TIF0 */
+	return IRQ_HANDLED;
+}
+
+static struct irqaction w90x900_timer_irq = {
+	.name		= "w90x900 Timer Tick",
+	.flags		= IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
+	.handler	= w90x900_timer_interrupt,
+};
+
+/*Set up timer reg.*/
+
+static void w90x900_timer_setup(void)
+{
+	__raw_writel(0, REG_TCSR0);
+	__raw_writel(0, REG_TCSR1);
+	__raw_writel(0, REG_TCSR2);
+	__raw_writel(0, REG_TCSR3);
+	__raw_writel(0, REG_TCSR4);
+	__raw_writel(0x1F, REG_TISR);
+	__raw_writel(15000000/(100 * 100), REG_TICR0);
+	__raw_writel(0x68000063, REG_TCSR0);
+}
+
+static void __init w90x900_timer_init(void)
+{
+	w90x900_timer_setup();
+	setup_irq(IRQ_TIMER0, &w90x900_timer_irq);
+}
+
+struct sys_timer w90x900_timer = {
+	.init		= w90x900_timer_init,
+	.offset		= w90x900_gettimeoffset,
+	.resume		= w90x900_timer_setup
+};
diff --git a/arch/arm/mach-w90x900/w90p910.c b/arch/arm/mach-w90x900/w90p910.c
new file mode 100644
index 00000000000..aa783bc9431
--- /dev/null
+++ b/arch/arm/mach-w90x900/w90p910.c
@@ -0,0 +1,134 @@
+/*
+ * linux/arch/arm/mach-w90x900/w90p910.c
+ *
+ * Based on linux/arch/arm/plat-s3c24xx/s3c244x.c by Ben Dooks
+ *
+ * Copyright (c) 2008 Nuvoton technology corporation
+ * All rights reserved.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * W90P910 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#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 <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 "cpu.h"
+
+/*W90P910 has five uarts*/
+
+#define MAX_UART_COUNT 5
+static int uart_count;
+static struct platform_device *uart_devs[MAX_UART_COUNT-1];
+
+/* Initial IO mappings */
+
+static struct map_desc w90p910_iodesc[] __initdata = {
+	IODESC_ENT(IRQ),
+	IODESC_ENT(GCR),
+	IODESC_ENT(UART),
+	IODESC_ENT(TIMER),
+	IODESC_ENT(EBI),
+	/*IODESC_ENT(LCD),*/
+};
+
+/*Init the dev resource*/
+
+static W90X900_RES(UART0);
+static W90X900_RES(UART1);
+static W90X900_RES(UART2);
+static W90X900_RES(UART3);
+static W90X900_RES(UART4);
+static W90X900_DEVICE(uart0, UART0, 0, "w90x900-uart");
+static W90X900_DEVICE(uart1, UART1, 1, "w90x900-uart");
+static W90X900_DEVICE(uart2, UART2, 2, "w90x900-uart");
+static W90X900_DEVICE(uart3, UART3, 3, "w90x900-uart");
+static W90X900_DEVICE(uart4, UART4, 4, "w90x900-uart");
+
+static struct platform_device *uart_devices[] __initdata = {
+	&w90x900_uart0,
+	&w90x900_uart1,
+	&w90x900_uart2,
+	&w90x900_uart3,
+	&w90x900_uart4
+};
+
+/*Init W90P910 uart device*/
+
+void __init w90p910_init_uarts(struct w90x900_uartcfg *cfg, int no)
+{
+	struct platform_device *platdev;
+	int uart, uartdev;
+
+	/*By min() to judge count of uart be used indeed*/
+
+	uartdev = ARRAY_SIZE(uart_devices);
+	no = min(uartdev, no);
+
+	for (uart = 0; uart < no; uart++, cfg++) {
+		if (cfg->hwport != uart)
+			printk(KERN_ERR "w90x900_uartcfg[%d] error\n", uart);
+		platdev = uart_devices[cfg->hwport];
+		uart_devs[uart] = platdev;
+		platdev->dev.platform_data = cfg;
+	}
+	uart_count = uart;
+}
+
+/*Init W90P910 evb io*/
+
+void __init w90p910_map_io(struct map_desc *mach_desc, int mach_size)
+{
+	unsigned long idcode = 0x0;
+
+	iotable_init(w90p910_iodesc, ARRAY_SIZE(w90p910_iodesc));
+
+	idcode = __raw_readl(W90X900PDID);
+	if (idcode != W90P910_CPUID)
+		printk(KERN_ERR "CPU type 0x%08lx is not W90P910\n", idcode);
+}
+
+/*Init W90P910 clock*/
+
+void __init w90p910_init_clocks(int xtal)
+{
+}
+
+static int __init w90p910_init_cpu(void)
+{
+	return 0;
+}
+
+static int __init w90x900_arch_init(void)
+{
+	int ret;
+
+	ret = w90p910_init_cpu();
+	if (ret != 0)
+		return ret;
+
+	return platform_add_devices(uart_devs, uart_count);
+
+}
+arch_initcall(w90x900_arch_init);