[U-Boot] [PATCH 1/4 v4] s5pc1xx: support Samsung s5pc1xx SoC

[Minkyu Kang <mk7.kang@samsung.com>]

This patch adds support for the Samsung s5pc100 and s5pc110
SoCs. The s5pc1xx SoC is an ARM Cortex A8 processor.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: HeungJun, Kim <riverful.kim@samsung.com>
---
Changes since v1:
- make C struct instead of base+offset
- use writel/readl function
- use the strmhz function
- fix some comments

Changes since v2:
- use function pointer for separate Soc
- provide two separate functions for each Soc
- remove not helpful cpu informations
- modify to lower case letter in C struct
- remove unnecessary Macro and header files

Changes since v3:
- N/A

 cpu/arm_cortexa8/s5pc1xx/Makefile    |   53 ++++++
 cpu/arm_cortexa8/s5pc1xx/cache.c     |   43 +++++
 cpu/arm_cortexa8/s5pc1xx/clock.c     |  308 ++++++++++++++++++++++++++++++++++
 cpu/arm_cortexa8/s5pc1xx/cpu_info.c  |   57 +++++++
 cpu/arm_cortexa8/s5pc1xx/reset.S     |   47 +++++
 cpu/arm_cortexa8/s5pc1xx/timer.c     |  195 +++++++++++++++++++++
 include/asm-arm/arch-s5pc1xx/clk.h   |   32 ++++
 include/asm-arm/arch-s5pc1xx/clock.h |   94 ++++++++++
 include/asm-arm/arch-s5pc1xx/cpu.h   |   72 ++++++++
 include/asm-arm/arch-s5pc1xx/gpio.h  |  129 ++++++++++++++
 include/asm-arm/arch-s5pc1xx/power.h |   42 +++++
 include/asm-arm/arch-s5pc1xx/pwm.h   |   59 +++++++
 include/asm-arm/arch-s5pc1xx/uart.h  |   47 +++++
 13 files changed, 1178 insertions(+), 0 deletions(-)
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/Makefile
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/cache.c
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/clock.c
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/cpu_info.c
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/reset.S
 create mode 100644 cpu/arm_cortexa8/s5pc1xx/timer.c
 create mode 100644 include/asm-arm/arch-s5pc1xx/clk.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/clock.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/cpu.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/gpio.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/power.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/pwm.h
 create mode 100644 include/asm-arm/arch-s5pc1xx/uart.h

diff --git a/cpu/arm_cortexa8/s5pc1xx/Makefile b/cpu/arm_cortexa8/s5pc1xx/Makefile
new file mode 100644
index 0000000..e08d9d8
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/Makefile
@@ -0,0 +1,53 @@
+#
+# (C) Copyright 2000-2003
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# (C) Copyright 2008
+# Guennadi Liakhovetki, DENX Software Engineering, <lg@denx.de>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# 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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(SOC).a
+
+SOBJS	= reset.o
+
+COBJS	+= cache.o
+COBJS	+= clock.o
+COBJS	+= cpu_info.o
+COBJS	+= timer.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
+
+all:	 $(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS)
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/cpu/arm_cortexa8/s5pc1xx/cache.c b/cpu/arm_cortexa8/s5pc1xx/cache.c
new file mode 100644
index 0000000..8652a45
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/cache.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+#include <asm/cache.h>
+
+void l2_cache_enable(void)
+{
+	unsigned long i;
+
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
+	__asm__ __volatile__("orr %0, %0, #0x2":"=r"(i));
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
+}
+
+void l2_cache_disable(void)
+{
+	unsigned long i;
+
+	__asm__ __volatile__("mrc p15, 0, %0, c1, c0, 1":"=r"(i));
+	__asm__ __volatile__("bic %0, %0, #0x2":"=r"(i));
+	__asm__ __volatile__("mcr p15, 0, %0, c1, c0, 1":"=r"(i));
+}
diff --git a/cpu/arm_cortexa8/s5pc1xx/clock.c b/cpu/arm_cortexa8/s5pc1xx/clock.c
new file mode 100644
index 0000000..a9e78dd
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/clock.c
@@ -0,0 +1,308 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ * Heungjun Kim <riverful.kim@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+
+#define APLL	0
+#define MPLL	1
+#define EPLL	2
+#define HPLL	3
+#define VPLL	4
+
+#define CLK_M	0
+#define CLK_D	1
+#define CLK_P	2
+
+#ifndef CONFIG_SYS_CLK_FREQ_C100
+#define CONFIG_SYS_CLK_FREQ_C100	12000000
+#endif
+#ifndef CONFIG_SYS_CLK_FREQ_C110
+#define CONFIG_SYS_CLK_FREQ_C110	24000000
+#endif
+
+unsigned long (*get_pclk)(void);
+unsigned long (*get_arm_clk)(void);
+unsigned long (*get_pll_clk)(int);
+
+/* s5pc110: return pll clock frequency */
+static unsigned long s5pc100_get_pll_clk(int pllreg)
+{
+	struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long r, m, p, s, mask, fout;
+	unsigned int freq;
+
+	switch (pllreg) {
+	case APLL:
+		r = readl(&clk->apll_con);
+		break;
+	case MPLL:
+		r = readl(&clk->mpll_con);
+		break;
+	case EPLL:
+		r = readl(&clk->epll_con);
+		break;
+	case HPLL:
+		r = readl(&clk->hpll_con);
+		break;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	/*
+	 * APLL_CON: MIDV [25:16]
+	 * MPLL_CON: MIDV [23:16]
+	 * EPLL_CON: MIDV [23:16]
+	 * HPLL_CON: MIDV [23:16]
+	 */
+	if (pllreg == APLL)
+		mask = 0x3ff;
+	else
+		mask = 0x0ff;
+
+	m = (r >> 16) & mask;
+
+	/* PDIV [13:8] */
+	p = (r >> 8) & 0x3f;
+	/* SDIV [2:0] */
+	s = r & 0x7;
+
+	/* FOUT = MDIV * FIN / (PDIV * 2^SDIV) */
+	freq = CONFIG_SYS_CLK_FREQ_C100;
+	fout = m * (freq / (p * (1 << s)));
+
+	return fout;
+}
+
+/* s5pc100: return pll clock frequency */
+static unsigned long s5pc110_get_pll_clk(int pllreg)
+{
+	struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long r, m, p, s, mask, fout;
+	unsigned int freq;
+
+	switch (pllreg) {
+	case APLL:
+		r = readl(&clk->apll_con);
+		break;
+	case MPLL:
+		r = readl(&clk->mpll_con);
+		break;
+	case EPLL:
+		r = readl(&clk->epll_con);
+		break;
+	case VPLL:
+		r = readl(&clk->vpll_con);
+		break;
+	default:
+		printf("Unsupported PLL (%d)\n", pllreg);
+		return 0;
+	}
+
+	/*
+	 * APLL_CON: MIDV [25:16]
+	 * MPLL_CON: MIDV [25:16]
+	 * EPLL_CON: MIDV [24:16]
+	 * VPLL_CON: MIDV [24:16]
+	 */
+	if (pllreg == APLL || pllreg == MPLL)
+		mask = 0x3ff;
+	else
+		mask = 0x1ff;
+
+	m = (r >> 16) & mask;
+
+	/* PDIV [13:8] */
+	p = (r >> 8) & 0x3f;
+	/* SDIV [2:0] */
+	s = r & 0x7;
+
+	freq = CONFIG_SYS_CLK_FREQ_C110;
+	if (pllreg == APLL) {
+		if (s < 1)
+			s = 1;
+		/* FOUT = MDIV * FIN / (PDIV * 2^(SDIV - 1)) */
+		fout = m * (freq / (p * (1 << (s - 1))));
+	} else
+		/* FOUT = MDIV * FIN / (PDIV * 2^SDIV) */
+		fout = m * (freq / (p * (1 << s)));
+
+	return fout;
+}
+
+/* s5pc110: return ARM clock frequency */
+static unsigned long s5pc110_get_arm_clk(void)
+{
+	struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long div;
+	unsigned long dout_apll, armclk;
+	unsigned int apll_ratio;
+
+	div = readl(&clk->div0);
+
+	/* APLL_RATIO: [2:0] */
+	apll_ratio = div & 0x7;
+
+	dout_apll = get_pll_clk(APLL) / (apll_ratio + 1);
+	armclk = dout_apll;
+
+	return armclk;
+}
+
+/* s5pc100: return ARM clock frequency */
+static unsigned long s5pc100_get_arm_clk(void)
+{
+	struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long div;
+	unsigned long dout_apll, armclk;
+	unsigned int apll_ratio, arm_ratio;
+
+	div = readl(&clk->div0);
+
+	/* ARM_RATIO: [6:4] */
+	arm_ratio = (div >> 4) & 0x7;
+	/* APLL_RATIO: [0] */
+	apll_ratio = div & 0x1;
+
+	dout_apll = get_pll_clk(APLL) / (apll_ratio + 1);
+	armclk = dout_apll / (arm_ratio + 1);
+
+	return armclk;
+}
+
+/* s5pc100: return HCLKD0 frequency */
+static unsigned long get_hclk(void)
+{
+	struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long hclkd0;
+	uint div, d0_bus_ratio;
+
+	div = readl(&clk->div0);
+	/* D0_BUS_RATIO: [10:8] */
+	d0_bus_ratio = (div >> 8) & 0x7;
+
+	hclkd0 = get_arm_clk() / (d0_bus_ratio + 1);
+
+	return hclkd0;
+}
+
+/* s5pc100: return PCLKD1 frequency */
+static unsigned long get_pclkd1(void)
+{
+	struct s5pc100_clock *clk = (struct s5pc100_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long d1_bus, pclkd1;
+	uint div, d1_bus_ratio, pclkd1_ratio;
+
+	div = readl(&clk->div0);
+	/* D1_BUS_RATIO: [14:12] */
+	d1_bus_ratio = (div >> 12) & 0x7;
+	/* PCLKD1_RATIO: [18:16] */
+	pclkd1_ratio = (div >> 16) & 0x7;
+
+	/* ASYNC Mode */
+	d1_bus = get_pll_clk(MPLL) / (d1_bus_ratio + 1);
+	pclkd1 = d1_bus / (pclkd1_ratio + 1);
+
+	return pclkd1;
+}
+
+/* s5pc110: return HCLKs frequency */
+static unsigned long get_hclk_sys(int dom)
+{
+	struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long hclk;
+	unsigned int div;
+	unsigned int offset;
+	unsigned int hclk_sys_ratio;
+
+	if (dom == CLK_M)
+		return get_hclk();
+
+	div = readl(&clk->div0);
+
+	/*
+	 * HCLK_MSYS_RATIO: [10:8]
+	 * HCLK_DSYS_RATIO: [19:16]
+	 * HCLK_PSYS_RATIO: [27:24]
+	 */
+	offset = 8 + (dom << 0x3);
+
+	hclk_sys_ratio = (div >> offset) & 0xf;
+
+	hclk = get_pll_clk(MPLL) / (hclk_sys_ratio + 1);
+
+	return hclk;
+}
+
+/* s5pc110: return PCLKs frequency */
+static unsigned long get_pclk_sys(int dom)
+{
+	struct s5pc110_clock *clk = (struct s5pc110_clock *)S5PC1XX_CLOCK_BASE;
+	unsigned long pclk;
+	unsigned int div;
+	unsigned int offset;
+	unsigned int pclk_sys_ratio;
+
+	div = readl(&clk->div0);
+
+	/*
+	 * PCLK_MSYS_RATIO: [14:12]
+	 * PCLK_DSYS_RATIO: [22:20]
+	 * PCLK_PSYS_RATIO: [30:28]
+	 */
+	offset = 12 + (dom << 0x3);
+
+	pclk_sys_ratio = (div >> offset) & 0x7;
+
+	pclk = get_hclk_sys(dom) / (pclk_sys_ratio + 1);
+
+	return pclk;
+}
+
+/* s5pc110: return peripheral clock frequency */
+static unsigned long s5pc110_get_pclk(void)
+{
+	return get_pclk_sys(CLK_P);
+}
+
+/* s5pc100: return peripheral clock frequency */
+static unsigned long s5pc100_get_pclk(void)
+{
+	return get_pclkd1();
+}
+
+void s5pc1xx_clock_init(void)
+{
+	if (cpu_is_s5pc110()) {
+		get_pll_clk = s5pc110_get_pll_clk;
+		get_arm_clk = s5pc110_get_arm_clk;
+		get_pclk = s5pc110_get_pclk;
+	} else {
+		get_pll_clk = s5pc100_get_pll_clk;
+		get_arm_clk = s5pc100_get_arm_clk;
+		get_pclk = s5pc100_get_pclk;
+	}
+}
diff --git a/cpu/arm_cortexa8/s5pc1xx/cpu_info.c b/cpu/arm_cortexa8/s5pc1xx/cpu_info.c
new file mode 100644
index 0000000..f16c0ff
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/cpu_info.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+#include <asm/io.h>
+#include <asm/arch/clk.h>
+
+/* Default is s5pc100 */
+unsigned int s5pc1xx_cpu_id = 0xC100;
+
+#ifdef CONFIG_ARCH_CPU_INIT
+int arch_cpu_init(void)
+{
+	s5pc1xx_cpu_id = readl(S5PC1XX_PRO_ID);
+	s5pc1xx_cpu_id = 0xC000 | ((s5pc1xx_cpu_id & 0x00FFF000) >> 12);
+
+	s5pc1xx_clock_init();
+
+	return 0;
+}
+#endif
+
+u32 get_device_type(void)
+{
+	return s5pc1xx_cpu_id;
+}
+
+#ifdef CONFIG_DISPLAY_CPUINFO
+int print_cpuinfo(void)
+{
+	char buf[32];
+
+	printf("CPU:\tS5P%X@%sMHz\n",
+			s5pc1xx_cpu_id, strmhz(buf, get_arm_clk()));
+
+	return 0;
+}
+#endif
diff --git a/cpu/arm_cortexa8/s5pc1xx/reset.S b/cpu/arm_cortexa8/s5pc1xx/reset.S
new file mode 100644
index 0000000..7f6ff9c
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/reset.S
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2009 Samsung Electronics.
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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/arch/cpu.h>
+
+#define S5PC100_SWRESET			0xE0200000
+#define S5PC110_SWRESET			0xE0102000
+
+.globl reset_cpu
+reset_cpu:
+	ldr	r1, =S5PC1XX_PRO_ID
+	ldr	r2, [r1]
+	ldr	r4, =0x00010000
+	and	r4, r2, r4
+	cmp	r4, #0
+	bne	110f
+	/* S5PC100 */
+	ldr	r1, =S5PC100_SWRESET
+	ldr	r2, =0xC100
+	b	200f
+110:	/* S5PC110 */
+	ldr	r1, =S5PC110_SWRESET
+	mov	r2, #1
+200:
+	str	r2, [r1]
+_loop_forever:
+	b	_loop_forever
diff --git a/cpu/arm_cortexa8/s5pc1xx/timer.c b/cpu/arm_cortexa8/s5pc1xx/timer.c
new file mode 100644
index 0000000..cdba5d9
--- /dev/null
+++ b/cpu/arm_cortexa8/s5pc1xx/timer.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Heungjun Kim <riverful.kim@samsung.com>
+ * Inki Dae <inki.dae@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 <common.h>
+#include <asm/io.h>
+#include <asm/arch/pwm.h>
+#include <asm/arch/clk.h>
+
+#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */
+#define MUX_DIV_2		1		/* 1/2 period */
+#define MUX_DIV_4		2		/* 1/4 period */
+#define MUX_DIV_8		3		/* 1/8 period */
+#define MUX_DIV_16		4		/* 1/16 period */
+#define MUX4_DIV_SHIFT		16
+
+#define TCON_TIMER4_SHIFT	20
+
+static unsigned long count_value;
+
+/* Internal tick units */
+static unsigned long long timestamp;	/* Monotonic incrementing timer */
+static unsigned long lastdec;		/* Last decremneter snapshot */
+
+/* macro to read the 16 bit timer */
+static inline struct s5pc1xx_timer *s5pc1xx_get_base_timer(void)
+{
+	if (cpu_is_s5pc110())
+		return (struct s5pc1xx_timer *)S5PC110_TIMER_BASE;
+	else
+		return (struct s5pc1xx_timer *)S5PC100_TIMER_BASE;
+}
+
+int timer_init(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+	u32 val;
+
+	/*
+	 * @ PWM Timer 4
+	 * Timer Freq(HZ) =
+	 *	PCLK / { (prescaler_value + 1) * (divider_value) }
+	 */
+
+	/* set prescaler : 16 */
+	/* set divider : 2 */
+	writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
+	writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
+
+	if (count_value == 0) {
+		/* reset initial value */
+		/* count_value = 2085937.5(HZ) (per 1 sec)*/
+		count_value = get_pclk() / ((PRESCALER_1 + 1) *
+				(MUX_DIV_2 + 1));
+
+		/* count_value / 100 = 20859.375(HZ) (per 10 msec) */
+		count_value = count_value / 100;
+	}
+
+	/* set count value */
+	writel(count_value, &timer->tcntb4);
+	lastdec = count_value;
+
+	val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) |
+		S5PC1XX_TCON4_AUTO_RELOAD;
+
+	/* auto reload & manual update */
+	writel(val | S5PC1XX_TCON4_UPDATE, &timer->tcon);
+
+	/* start PWM timer 4 */
+	writel(val | S5PC1XX_TCON4_START, &timer->tcon);
+
+	timestamp = 0;
+
+	return 0;
+}
+
+/*
+ * timer without interrupts
+ */
+void reset_timer(void)
+{
+	reset_timer_masked();
+}
+
+unsigned long get_timer(unsigned long base)
+{
+	return get_timer_masked() - base;
+}
+
+void set_timer(unsigned long t)
+{
+	timestamp = t;
+}
+
+/* delay x useconds */
+void udelay(unsigned long usec)
+{
+	unsigned long tmo, tmp;
+
+	if (usec >= 1000) {
+		/*
+		 * if "big" number, spread normalization
+		 * to seconds
+		 * 1. start to normalize for usec to ticks per sec
+		 * 2. find number of "ticks" to wait to achieve target
+		 * 3. finish normalize.
+		 */
+		tmo = usec / 1000;
+		tmo *= (CONFIG_SYS_HZ * count_value / 10);
+		tmo /= 1000;
+	} else {
+		/* else small number, don't kill it prior to HZ multiply */
+		tmo = usec * CONFIG_SYS_HZ * count_value / 10;
+		tmo /= (1000 * 1000);
+	}
+
+	/* get current timestamp */
+	tmp = get_timer(0);
+
+	/* if setting this fordward will roll time stamp */
+	/* reset "advancing" timestamp to 0, set lastdec value */
+	/* else, set advancing stamp wake up time */
+	if ((tmo + tmp + 1) < tmp)
+		reset_timer_masked();
+	else
+		tmo += tmp;
+
+	/* loop till event */
+	while (get_timer_masked() < tmo)
+		;	/* nop */
+}
+
+void reset_timer_masked(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+
+	/* reset time */
+	lastdec = readl(&timer->tcnto4);
+	timestamp = 0;
+}
+
+unsigned long get_timer_masked(void)
+{
+	struct s5pc1xx_timer *const timer = s5pc1xx_get_base_timer();
+	unsigned long now = readl(&timer->tcnto4);
+
+	if (lastdec >= now)
+		timestamp += lastdec - now;
+	else
+		timestamp += lastdec + count_value - now;
+
+	lastdec = now;
+
+	return timestamp;
+}
+
+/*
+ * This function is derived from PowerPC code (read timebase as long long).
+ * On ARM it just returns the timer value.
+ */
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+/*
+ * This function is derived from PowerPC code (timebase clock frequency).
+ * On ARM it returns the number of timer ticks per second.
+ */
+unsigned long get_tbclk(void)
+{
+	return CONFIG_SYS_HZ;
+}
diff --git a/include/asm-arm/arch-s5pc1xx/clk.h b/include/asm-arm/arch-s5pc1xx/clk.h
new file mode 100644
index 0000000..f1aa44f
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/clk.h
@@ -0,0 +1,32 @@
+/*
+ * (C) Copyright 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ * Heungjun Kim <riverful.kim@samsung.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_ARM_ARCH_CLK_H_
+#define __ASM_ARM_ARCH_CLK_H_
+
+void s5pc1xx_clock_init(void);
+
+extern unsigned long (*get_pll_clk)(int pllreg);
+extern unsigned long (*get_arm_clk)(void);
+extern unsigned long (*get_pclk)(void);
+
+#endif
diff --git a/include/asm-arm/arch-s5pc1xx/clock.h b/include/asm-arm/arch-s5pc1xx/clock.h
new file mode 100644
index 0000000..0cad922
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/clock.h
@@ -0,0 +1,94 @@
+/*
+ * (C) Copyright 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ * Heungjun Kim <riverful.kim@samsung.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_ARM_ARCH_CLOCK_H_
+#define __ASM_ARM_ARCH_CLOCK_H_
+
+#ifndef __ASSEMBLY__
+struct s5pc100_clock {
+	unsigned long	apll_lock;
+	unsigned long	mpll_lock;
+	unsigned long	epll_lock;
+	unsigned long	hpll_lock;
+	unsigned char	res1[0xf0];
+	unsigned long	apll_con;
+	unsigned long	mpll_con;
+	unsigned long	epll_con;
+	unsigned long	hpll_con;
+	unsigned char	res2[0xf0];
+	unsigned long	src0;
+	unsigned long	src1;
+	unsigned long	src2;
+	unsigned long	src3;
+	unsigned char	res3[0xf0];
+	unsigned long	div0;
+	unsigned long	div1;
+	unsigned long	div2;
+	unsigned long	div3;
+	unsigned long	div4;
+	unsigned char	res4[0x1ec];
+	unsigned long	gate_d00;
+	unsigned long	gate_d01;
+	unsigned long	gate_d02;
+	unsigned char	res5[0x54];
+	unsigned long	gate_sclk0;
+	unsigned long	gate_sclk1;
+};
+
+struct s5pc110_clock {
+	unsigned long	apll_lock;
+	unsigned char	res1[0x4];
+	unsigned long	mpll_lock;
+	unsigned char	res2[0x4];
+	unsigned long	epll_lock;
+	unsigned char	res3[0xc];
+	unsigned long	vpll_lock;
+	unsigned char	res4[0xdc];
+	unsigned long	apll_con;
+	unsigned char	res5[0x4];
+	unsigned long	mpll_con;
+	unsigned char	res6[0x4];
+	unsigned long	epll_con;
+	unsigned char	res7[0xc];
+	unsigned long	vpll_con;
+	unsigned char	res8[0xdc];
+	unsigned long	src0;
+	unsigned long	src1;
+	unsigned long	src2;
+	unsigned long	src3;
+	unsigned char	res9[0xf0];
+	unsigned long	div0;
+	unsigned long	div1;
+	unsigned long	div2;
+	unsigned long	div3;
+	unsigned long	div4;
+	unsigned char	res10[0x1ec];
+	unsigned long	gate_d00;
+	unsigned long	gate_d01;
+	unsigned long	gate_d02;
+	unsigned char	res11[0x54];
+	unsigned long	gate_sclk0;
+	unsigned long	gate_sclk1;
+};
+#endif
+
+#endif
diff --git a/include/asm-arm/arch-s5pc1xx/cpu.h b/include/asm-arm/arch-s5pc1xx/cpu.h
new file mode 100644
index 0000000..90485aa
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/cpu.h
@@ -0,0 +1,72 @@
+/*
+ * (C) Copyright 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ * Heungjun Kim <riverful.kim@samsung.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 _S5PC1XX_CPU_H
+#define _S5PC1XX_CPU_H
+
+#define S5PC1XX_ADDR_BASE	0xE0000000
+
+#define S5PC1XX_CLOCK_BASE	0xE0100000
+
+/* S5PC100 */
+#define S5PC100_GPIO_BASE	0xE0300000
+#define S5PC100_VIC0_BASE	0xE4000000
+#define S5PC100_VIC1_BASE	0xE4100000
+#define S5PC100_VIC2_BASE	0xE4200000
+#define S5PC100_DMC_BASE	0xE6000000
+#define S5PC100_SROMC_BASE	0xE7000000
+#define S5PC100_ONENAND_BASE	0xE7100000
+#define S5PC100_PWMTIMER_BASE	0xEA000000
+#define S5PC100_WATCHDOG_BASE	0xEA200000
+#define S5PC100_UART_BASE	0xEC000000
+
+/* S5PC110 */
+#define S5PC110_GPIO_BASE	0xE0200000
+#define S5PC110_PWMTIMER_BASE	0xE2500000
+#define S5PC110_WATCHDOG_BASE	0xE2700000
+#define S5PC110_UART_BASE	0xE2900000
+#define S5PC110_SROMC_BASE	0xE8000000
+#define S5PC110_DMC0_BASE	0xF0000000
+#define S5PC110_DMC1_BASE	0xF1400000
+#define S5PC110_VIC0_BASE	0xF2000000
+#define S5PC110_VIC1_BASE	0xF2100000
+#define S5PC110_VIC2_BASE	0xF2200000
+#define S5PC110_VIC3_BASE	0xF2300000
+
+/* Chip ID */
+#define S5PC1XX_PRO_ID		0xE0000000
+
+#ifndef __ASSEMBLY__
+/* CPU detection macros */
+extern unsigned int s5pc1xx_cpu_id;
+
+#define IS_SAMSUNG_TYPE(type, id)			\
+static inline int cpu_is_##type(void)			\
+{							\
+	return s5pc1xx_cpu_id == id ? 1 : 0;		\
+}
+
+IS_SAMSUNG_TYPE(s5pc100, 0xc100)
+IS_SAMSUNG_TYPE(s5pc110, 0xc110)
+#endif
+
+#endif	/* _S5PC1XX_CPU_H */
diff --git a/include/asm-arm/arch-s5pc1xx/gpio.h b/include/asm-arm/arch-s5pc1xx/gpio.h
new file mode 100644
index 0000000..0010405
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/gpio.h
@@ -0,0 +1,129 @@
+/*
+ * (C) Copyright 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.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_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#ifndef __ASSEMBLY__
+struct s5pc1xx_gpio_bank {
+	unsigned long	con;
+	unsigned long	dat;
+	unsigned long	pull;
+	unsigned long	drv;
+	unsigned long	pdn_con;
+	unsigned long	pdn_pull;
+	unsigned char	res1[8];
+};
+
+struct s5pc100_gpio {
+	struct s5pc1xx_gpio_bank gpio_a0;
+	struct s5pc1xx_gpio_bank gpio_a1;
+	struct s5pc1xx_gpio_bank gpio_b;
+	struct s5pc1xx_gpio_bank gpio_c;
+	struct s5pc1xx_gpio_bank gpio_d;
+	struct s5pc1xx_gpio_bank gpio_e0;
+	struct s5pc1xx_gpio_bank gpio_e1;
+	struct s5pc1xx_gpio_bank gpio_f0;
+	struct s5pc1xx_gpio_bank gpio_f1;
+	struct s5pc1xx_gpio_bank gpio_f2;
+	struct s5pc1xx_gpio_bank gpio_f3;
+	struct s5pc1xx_gpio_bank gpio_g0;
+	struct s5pc1xx_gpio_bank gpio_g1;
+	struct s5pc1xx_gpio_bank gpio_g2;
+	struct s5pc1xx_gpio_bank gpio_g3;
+	struct s5pc1xx_gpio_bank gpio_i;
+	struct s5pc1xx_gpio_bank gpio_j0;
+	struct s5pc1xx_gpio_bank gpio_j1;
+	struct s5pc1xx_gpio_bank gpio_j2;
+	struct s5pc1xx_gpio_bank gpio_j3;
+	struct s5pc1xx_gpio_bank gpio_j4;
+	struct s5pc1xx_gpio_bank gpio_k0;
+	struct s5pc1xx_gpio_bank gpio_k1;
+	struct s5pc1xx_gpio_bank gpio_k2;
+	struct s5pc1xx_gpio_bank gpio_k3;
+	struct s5pc1xx_gpio_bank gpio_l0;
+	struct s5pc1xx_gpio_bank gpio_l1;
+	struct s5pc1xx_gpio_bank gpio_l2;
+	struct s5pc1xx_gpio_bank gpio_l3;
+	struct s5pc1xx_gpio_bank gpio_l4;
+	struct s5pc1xx_gpio_bank gpio_h0;
+	struct s5pc1xx_gpio_bank gpio_h1;
+	struct s5pc1xx_gpio_bank gpio_h2;
+	struct s5pc1xx_gpio_bank gpio_h3;
+};
+
+struct s5pc110_gpio {
+	struct s5pc1xx_gpio_bank gpio_a0;
+	struct s5pc1xx_gpio_bank gpio_a1;
+	struct s5pc1xx_gpio_bank gpio_b;
+	struct s5pc1xx_gpio_bank gpio_c0;
+	struct s5pc1xx_gpio_bank gpio_c1;
+	struct s5pc1xx_gpio_bank gpio_d0;
+	struct s5pc1xx_gpio_bank gpio_d1;
+	struct s5pc1xx_gpio_bank gpio_e0;
+	struct s5pc1xx_gpio_bank gpio_e1;
+	struct s5pc1xx_gpio_bank gpio_f0;
+	struct s5pc1xx_gpio_bank gpio_f1;
+	struct s5pc1xx_gpio_bank gpio_f2;
+	struct s5pc1xx_gpio_bank gpio_f3;
+	struct s5pc1xx_gpio_bank gpio_g0;
+	struct s5pc1xx_gpio_bank gpio_g1;
+	struct s5pc1xx_gpio_bank gpio_g2;
+	struct s5pc1xx_gpio_bank gpio_g3;
+	struct s5pc1xx_gpio_bank gpio_i;
+	struct s5pc1xx_gpio_bank gpio_j0;
+	struct s5pc1xx_gpio_bank gpio_j1;
+	struct s5pc1xx_gpio_bank gpio_j2;
+	struct s5pc1xx_gpio_bank gpio_j3;
+	struct s5pc1xx_gpio_bank gpio_j4;
+	struct s5pc1xx_gpio_bank gpio_mp0_1;
+	struct s5pc1xx_gpio_bank gpio_mp0_2;
+	struct s5pc1xx_gpio_bank gpio_mp0_3;
+	struct s5pc1xx_gpio_bank gpio_mp0_4;
+	struct s5pc1xx_gpio_bank gpio_mp0_5;
+	struct s5pc1xx_gpio_bank gpio_mp0_6;
+	struct s5pc1xx_gpio_bank gpio_mp0_7;
+	struct s5pc1xx_gpio_bank gpio_mp1_0;
+	struct s5pc1xx_gpio_bank gpio_mp1_1;
+	struct s5pc1xx_gpio_bank gpio_mp1_2;
+	struct s5pc1xx_gpio_bank gpio_mp1_3;
+	struct s5pc1xx_gpio_bank gpio_mp1_4;
+	struct s5pc1xx_gpio_bank gpio_mp1_5;
+	struct s5pc1xx_gpio_bank gpio_mp1_6;
+	struct s5pc1xx_gpio_bank gpio_mp1_7;
+	struct s5pc1xx_gpio_bank gpio_mp1_8;
+	struct s5pc1xx_gpio_bank gpio_mp2_0;
+	struct s5pc1xx_gpio_bank gpio_mp2_1;
+	struct s5pc1xx_gpio_bank gpio_mp2_2;
+	struct s5pc1xx_gpio_bank gpio_mp2_3;
+	struct s5pc1xx_gpio_bank gpio_mp2_4;
+	struct s5pc1xx_gpio_bank gpio_mp2_5;
+	struct s5pc1xx_gpio_bank gpio_mp2_6;
+	struct s5pc1xx_gpio_bank gpio_mp2_7;
+	struct s5pc1xx_gpio_bank gpio_mp2_8;
+	struct s5pc1xx_gpio_bank res1[48];
+	struct s5pc1xx_gpio_bank gpio_h0;
+	struct s5pc1xx_gpio_bank gpio_h1;
+	struct s5pc1xx_gpio_bank gpio_h2;
+	struct s5pc1xx_gpio_bank gpio_h3;
+};
+#endif
+
+#endif
diff --git a/include/asm-arm/arch-s5pc1xx/power.h b/include/asm-arm/arch-s5pc1xx/power.h
new file mode 100644
index 0000000..57e2a2b
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/power.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2009 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.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_ARM_ARCH_POWER_H_
+#define __ASM_ARM_ARCH_POWER_H_
+
+/*
+ * Power control
+ */
+#define S5PC100_OTHERS			0xE0108200
+#define S5PC100_RST_STAT		0xE0108300
+#define S5PC100_SLEEP_WAKEUP		(1 << 3)
+#define S5PC100_WAKEUP_STAT		0xE0108304
+#define S5PC100_INFORM0			0xE0108400
+
+#define S5PC110_RST_STAT		0xE010A000
+#define S5PC110_SLEEP_WAKEUP		(1 << 3)
+#define S5PC110_WAKEUP_STAT		0xE010C200
+#define S5PC110_OTHERS			0xE010E000
+#define S5PC110_USB_PHY_CON		0xE010E80C
+#define S5PC110_INFORM0			0xE010F000
+
+#endif
diff --git a/include/asm-arm/arch-s5pc1xx/pwm.h b/include/asm-arm/arch-s5pc1xx/pwm.h
new file mode 100644
index 0000000..53c23cd
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/pwm.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2009 Samsung Electronics
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ * Minkyu Kang <mk7.kang@samsung.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_ARM_ARCH_PWM_H_
+#define __ASM_ARM_ARCH_PWM_H_
+
+/* PWM timer addressing */
+#define S5PC100_TIMER_BASE	S5PC100_PWMTIMER_BASE
+#define S5PC110_TIMER_BASE	S5PC110_PWMTIMER_BASE
+
+/* Interval mode(Auto Reload) of PWM Timer 4 */
+#define S5PC1XX_TCON4_AUTO_RELOAD	(1 << 22)
+/* Update TCNTB4 */
+#define S5PC1XX_TCON4_UPDATE		(1 << 21)
+/* start bit of PWM Timer 4 */
+#define S5PC1XX_TCON4_START		(1 << 20)
+
+#ifndef __ASSEMBLY__
+struct s5pc1xx_timer {
+	unsigned long	tcfg0;
+	unsigned long	tcfg1;
+	unsigned long	tcon;
+	unsigned long	tcntb0;
+	unsigned long	tcmpb0;
+	unsigned long	tcnto0;
+	unsigned long	tcntb1;
+	unsigned long	tcmpb1;
+	unsigned long	tcnto1;
+	unsigned long	tcntb2;
+	unsigned long	tcmpb2;
+	unsigned long	tcnto2;
+	unsigned long	tcntb3;
+	unsigned long	res1;
+	unsigned long	tcnto3;
+	unsigned long	tcntb4;
+	unsigned long	tcnto4;
+	unsigned long	tintcstat;
+};
+#endif	/* __ASSEMBLY__ */
+
+#endif
diff --git a/include/asm-arm/arch-s5pc1xx/uart.h b/include/asm-arm/arch-s5pc1xx/uart.h
new file mode 100644
index 0000000..bd7d6b2
--- /dev/null
+++ b/include/asm-arm/arch-s5pc1xx/uart.h
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2009 Samsung Electronics
+ * Minkyu Kang <mk7.kang@samsung.com>
+ * Heungjun Kim <riverful.kim@samsung.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_UART_H_
+#define __ASM_ARCH_UART_H_
+
+#ifndef __ASSEMBLY__
+struct s5pc1xx_uart {
+	unsigned long	ulcon;
+	unsigned long	ucon;
+	unsigned long	ufcon;
+	unsigned long	umcon;
+	unsigned long	utrstat;
+	unsigned long	uerstat;
+	unsigned long	ufstat;
+	unsigned long	umstat;
+	unsigned char	utxh;
+	unsigned char	res1[3];
+	unsigned char	urxh;
+	unsigned char	res2[3];
+	unsigned long	ubrdiv;
+	unsigned short	udivslot;
+	unsigned char	res3[2];
+	unsigned char	res4[0x3d0];
+};
+#endif	/* __ASSEMBLY__ */
+
+#endif
-- 
1.5.4.3