diff --git a/include/asm-arm/arch-arm720t/s3c4510b.h b/include/asm-arm/arch-arm720t/s3c4510b.h
new file mode 100644
index 0000000..7acbec4
--- /dev/null
+++ b/include/asm-arm/arch-arm720t/s3c4510b.h
@@ -0,0 +1,231 @@
+#ifndef __HW_S3C4510_H
+#define __HW_S3C4510_H
+
+/*
+ * Copyright (c) 2004	Cucy Systems (http://www.cucy.com)
+ * Curt Brune <curt@cucy.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
+ *
+ * Description:   Samsung S3C4510B register layout
+ */
+
+/*------------------------------------------------------------------------
+ *	  ASIC Address Definition
+ *----------------------------------------------------------------------*/
+
+/* L1 8KB on chip SRAM base address */
+#define SRAM_BASE       (0x03fe0000)
+
+/* Special Register Start Address After System Reset */
+#define REG_BASE	(0x03ff0000)
+#define SPSTR      	(REG_BASE)
+
+/* *********************** */
+/* System Manager Register */
+/* *********************** */
+#define REG_SYSCFG	(REG_BASE+0x0000)
+
+#define REG_CLKCON      (REG_BASE+0x3000)
+#define REG_EXTACON0	(REG_BASE+0x3008)
+#define REG_EXTACON1	(REG_BASE+0x300c)
+#define REG_EXTDBWTH	(REG_BASE+0x3010)
+#define REG_ROMCON0	(REG_BASE+0x3014)
+#define REG_ROMCON1	(REG_BASE+0x3018)
+#define REG_ROMCON2	(REG_BASE+0x301c)
+#define REG_ROMCON3	(REG_BASE+0x3020)
+#define REG_ROMCON4	(REG_BASE+0x3024)
+#define REG_ROMCON5	(REG_BASE+0x3028)
+#define REG_DRAMCON0	(REG_BASE+0x302c)
+#define REG_DRAMCON1	(REG_BASE+0x3030)
+#define REG_DRAMCON2	(REG_BASE+0x3034)
+#define REG_DRAMCON3	(REG_BASE+0x3038)
+#define REG_REFEXTCON	(REG_BASE+0x303c)
+
+/* *********************** */
+/* Ethernet BDMA Register  */
+/* *********************** */
+#define REG_BDMATXCON	(REG_BASE+0x9000)
+#define REG_BDMARXCON	(REG_BASE+0x9004)
+#define REG_BDMATXPTR	(REG_BASE+0x9008)
+#define REG_BDMARXPTR	(REG_BASE+0x900c)
+#define REG_BDMARXLSZ	(REG_BASE+0x9010)
+#define REG_BDMASTAT	(REG_BASE+0x9014)
+
+/* Content Address Memory */
+#define REG_CAM_BASE	(REG_BASE+0x9100)
+
+#define REG_BDMATXBUF	(REG_BASE+0x9200)
+#define REG_BDMARXBUF	(REG_BASE+0x9800)
+
+/* *********************** */
+/* Ethernet MAC Register   */
+/* *********************** */
+#define REG_MACCON	(REG_BASE+0xa000)
+#define REG_CAMCON	(REG_BASE+0xa004)
+#define REG_MACTXCON	(REG_BASE+0xa008)
+#define REG_MACTXSTAT	(REG_BASE+0xa00c)
+#define REG_MACRXCON	(REG_BASE+0xa010)
+#define REG_MACRXSTAT	(REG_BASE+0xa014)
+#define REG_STADATA	(REG_BASE+0xa018)
+#define REG_STACON	(REG_BASE+0xa01c)
+#define REG_CAMEN	(REG_BASE+0xa028)
+#define REG_EMISSCNT	(REG_BASE+0xa03c)
+#define REG_EPZCNT	(REG_BASE+0xa040)
+#define REG_ERMPZCNT	(REG_BASE+0xa044)
+#define REG_ETXSTAT	(REG_BASE+0x9040)
+#define REG_MACRXDESTR	(REG_BASE+0xa064)
+#define REG_MACRXSTATEM	(REG_BASE+0xa090)
+#define REG_MACRXFIFO	(REG_BASE+0xa200)
+
+/********************/
+/* I2C Bus Register */
+/********************/
+#define REG_I2C_CON	(REG_BASE+0xf000)
+#define REG_I2C_BUF	(REG_BASE+0xf004)
+#define REG_I2C_PS	(REG_BASE+0xf008)
+#define REG_I2C_COUNT 	(REG_BASE+0xf00c)
+
+/********************/
+/*    GDMA 0        */
+/********************/
+#define REG_GDMACON0	(REG_BASE+0xb000)
+#define REG_GDMA0_RUN_ENABLE (REG_BASE+0xb020)
+#define REG_GDMASRC0	(REG_BASE+0xb004)
+#define REG_GDMADST0	(REG_BASE+0xb008)
+#define REG_GDMACNT0	(REG_BASE+0xb00c)
+
+/********************/
+/*    GDMA 1        */
+/********************/
+#define REG_GDMACON1	(REG_BASE+0xc000)
+#define REG_GDMA1_RUN_ENABLE (REG_BASE+0xc020)
+#define REG_GDMASRC1	(REG_BASE+0xc004)
+#define REG_GDMADST1	(REG_BASE+0xc008)
+#define REG_GDMACNT1	(REG_BASE+0xc00c)
+
+/********************/
+/*      UART 0      */
+/********************/
+#define UART0_BASE       (REG_BASE+0xd000)
+#define REG_UART0_LCON   (REG_BASE+0xd000)
+#define REG_UART0_CTRL   (REG_BASE+0xd004)
+#define REG_UART0_STAT   (REG_BASE+0xd008)
+#define REG_UART0_TXB    (REG_BASE+0xd00c)
+#define REG_UART0_RXB    (REG_BASE+0xd010)
+#define REG_UART0_BAUD_DIV    (REG_BASE+0xd014)
+#define REG_UART0_BAUD_CNT    (REG_BASE+0xd018)
+#define REG_UART0_BAUD_CLK    (REG_BASE+0xd01C)
+
+/********************/
+/*     UART 1       */
+/********************/
+#define UART1_BASE       (REG_BASE+0xe000)
+#define REG_UART1_LCON   (REG_BASE+0xe000)
+#define REG_UART1_CTRL   (REG_BASE+0xe004)
+#define REG_UART1_STAT   (REG_BASE+0xe008)
+#define REG_UART1_TXB    (REG_BASE+0xe00c)
+#define REG_UART1_RXB    (REG_BASE+0xe010)
+#define REG_UART1_BAUD_DIV    (REG_BASE+0xe014)
+#define REG_UART1_BAUD_CNT    (REG_BASE+0xe018)
+#define REG_UART1_BAUD_CLK    (REG_BASE+0xe01C)
+
+/********************/
+/*  Timer Register  */
+/********************/
+#define REG_TMOD  	(REG_BASE+0x6000)
+#define REG_TDATA0	(REG_BASE+0x6004)
+#define REG_TDATA1	(REG_BASE+0x6008)
+#define REG_TCNT0	(REG_BASE+0x600c)
+#define REG_TCNT1	(REG_BASE+0x6010)
+
+/**********************/
+/* I/O Port Interface */
+/**********************/
+#define REG_IOPMODE	(REG_BASE+0x5000)
+#define REG_IOPCON  	(REG_BASE+0x5004)
+#define REG_IOPDATA 	(REG_BASE+0x5008)
+
+/*********************************/
+/* Interrupt Controller Register */
+/*********************************/
+#define REG_INTMODE     (REG_BASE+0x4000)
+#define REG_INTPEND     (REG_BASE+0x4004)
+#define REG_INTMASK     (REG_BASE+0x4008)
+
+#define REG_INTPRI0     (REG_BASE+0x400c)
+#define REG_INTPRI1	(REG_BASE+0x4010)
+#define REG_INTPRI2	(REG_BASE+0x4014)
+#define REG_INTPRI3	(REG_BASE+0x4018)
+#define REG_INTPRI4	(REG_BASE+0x401c)
+#define REG_INTPRI5	(REG_BASE+0x4020)
+#define REG_INTOFFSET	(REG_BASE+0x4024)
+#define REG_INTPNDPRI	(REG_BASE+0x4028)
+#define REG_INTPNDTST	(REG_BASE+0x402C)
+
+/*********************************/
+/* CACHE CONTROL MASKS           */
+/*********************************/
+#define CACHE_STALL      (0x00000001)
+#define CACHE_ENABLE     (0x00000002)
+#define CACHE_WRITE_BUFF (0x00000004)
+#define CACHE_MODE       (0x00000030)
+#define CACHE_MODE_00    (0x00000000)
+#define CACHE_MODE_01    (0x00000010)
+#define CACHE_MODE_10    (0x00000020)
+
+/*********************************/
+/* CACHE RAM BASE ADDRESSES      */
+/*********************************/
+#define CACHE_SET0_RAM   (0x10000000)
+#define CACHE_SET1_RAM   (0x10800000)
+#define CACHE_TAG_RAM    (0x11000000)
+
+/*********************************/
+/* CACHE_DISABLE MASK            */
+/*********************************/
+#define CACHE_DISABLE_MASK (0x04000000)
+
+#define GET_REG(reg)       (*((volatile u32 *)(reg)))
+#define PUT_REG(reg, val)  (*((volatile u32 *)(reg)) = ((u32)(val)))
+#define SET_REG(reg, mask) (PUT_REG((reg), GET_REG((reg)) |  mask))
+#define CLR_REG(reg, mask) (PUT_REG((reg), GET_REG((reg)) & ~mask))
+#define PUT_U16(reg, val)  (*((volatile u16 *)(reg)) = ((u16)(val)))
+#define PUT__U8(reg, val)  (*((volatile u8  *)(reg)) = (( u8)((val)&0xFF)))
+#define GET__U8(reg)       (*((volatile u8  *)(reg)))
+
+/***********************************/
+/* CLOCK CONSTANTS -- 50 MHz Clock */
+/***********************************/
+
+#define CLK_FREQ_MHZ       (50)
+#define t_data_us(t)       ((t)*CLK_FREQ_MHZ-1)   /* t is time tick,unit[us] */
+#define t_data_ms(t)       (t_data_us((t)*1000))  /* t is time tick,unit[ms] */
+
+/*********************************************************/
+/*	       TIMER MODE REGISTER                       */
+/*********************************************************/
+#define  TM0_RUN      0x01  /* Timer 0 enable */
+#define  TM0_TOGGLE   0x02  /* 0, interval mode */
+#define  TM0_OUT_1    0x04  /* Timer 0 Initial TOUT0 value */
+#define  TM1_RUN      0x08  /* Timer 1 enable */
+#define  TM1_TOGGLE   0x10  /* 0, interval mode */
+#define  TM1_OUT_1    0x20  /* Timer 0 Initial TOUT0 value */
+
+#endif /* __S3C4510_h */