* Code cleanup (ARM mostly)

* Patch by Curt Brune, 17 May 2004:
  - Add support for Samsung S3C4510B CPU (ARM7tdmi based SoC)
  - Add support for ESPD-Inc. EVB4510 Board

6 files changed, 925 insertions, 0 deletions

diff --git a/board/evb4510/Makefile b/board/evb4510/Makefile
new file mode 100644
index 0000000..1ab4dfb
--- /dev/null
+++ b/board/evb4510/Makefile
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@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 $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	:= evb4510.o flash.o
+SOBJS	:= memsetup.o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $^
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/evb4510/config.mk b/board/evb4510/config.mk
new file mode 100644
index 0000000..4d1a019
--- /dev/null
+++ b/board/evb4510/config.mk
@@ -0,0 +1,27 @@
+#
+# Copyright (c) 2004	Cucy Systems (http://www.cucy.com)
+# Curt Brune <curt@cucy.com>
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@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
+#
+
+TEXT_BASE = 0x007d0000
diff --git a/board/evb4510/evb4510.c b/board/evb4510/evb4510.c
new file mode 100644
index 0000000..72d1f4e
--- /dev/null
+++ b/board/evb4510/evb4510.c
@@ -0,0 +1,86 @@
+/*
+ * 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
+ */
+
+#include <common.h>
+#include <asm/hardware.h>
+#include <command.h>
+
+/* ------------------------------------------------------------------------- */
+
+
+#define PUT_LED(val)       (PUT_REG(REG_IOPDATA, (~val)&0xFF))
+#define GET_LED()          ((~GET_REG( REG_IOPDATA)) & 0xFF)
+#define SET_LED(val)       { u32 led = GET_LED(); led |= 1 << (val);  PUT_LED( led); }
+#define CLR_LED(val)       { u32 led = GET_LED(); led &= ~(1 << (val));  PUT_LED( led); }
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	icache_enable();
+
+	/* address for the kernel command line */
+	gd->bd->bi_boot_params = 0x800;
+
+	/* enable board LEDs for output */
+	PUT_REG( REG_IOPDATA, 0x0);
+	PUT_REG( REG_IOPMODE, 0xFFFF);
+	PUT_REG( REG_IOPDATA, 0xFF);
+
+	/* enable LED 7 to show we're alive */
+	SET_LED( 7);
+
+	/* configure free running timer 1 */
+	/* Stop timer 1 */
+	CLR_REG( REG_TMOD, TM1_RUN);
+
+	/* Configure for toggle mode */
+	SET_REG( REG_TMOD, TM1_TOGGLE);
+
+	/* Load Timer data register with count down value */
+	PUT_REG( REG_TDATA1, 0xFFFFFFFF);
+
+	/* Clear timer counter register */
+	PUT_REG( REG_TCNT1, 0x0);
+
+	/* Start timer -- count down timer */
+	SET_REG( REG_TMOD, TM1_RUN);
+
+	return 0;
+}
+
+int dram_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size  = PHYS_SDRAM_1_SIZE;
+#if CONFIG_NR_DRAM_BANKS == 2
+	gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+	gd->bd->bi_dram[1].size  = PHYS_SDRAM_2_SIZE;
+#endif
+	return 0;
+}
diff --git a/board/evb4510/flash.c b/board/evb4510/flash.c
new file mode 100644
index 0000000..5491827
--- /dev/null
+++ b/board/evb4510/flash.c
@@ -0,0 +1,540 @@
+/*
+ *
+ * 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
+ */
+
+#include <common.h>
+#include <asm/hardware.h>
+#include <flash.h>
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+
+typedef enum {
+	FLASH_DEV_U9_512KB = 0,
+	FLASH_DEV_U7_2MB = 1
+} FLASH_DEV;
+
+#define FLASH_DQ7		(0x80)
+#define FLASH_DQ5		(0x20)
+
+#define PROG_ADDR		(0xAAA)
+#define SETUP_ADDR		(0xAAA)
+#define ID_ADDR			(0xAAA)
+#define UNLOCK_ADDR1		(0xAAA)
+#define UNLOCK_ADDR2		(0x555)
+
+#define UNLOCK_CMD1		(0xAA)
+#define UNLOCK_CMD2		(0x55)
+#define ERASE_SUSPEND_CMD	(0xB0)
+#define ERASE_RESUME_CMD	(0x30)
+#define RESET_CMD		(0xF0)
+#define ID_CMD			(0x90)
+#define SELECT_CMD		(0x90)
+#define CHIPERASE_CMD		(0x10)
+#define BYPASS_CMD		(0x20)
+#define SECERASE_CMD		(0x30)
+#define PROG_CMD		(0xa0)
+#define SETUP_CMD		(0x80)
+
+#if 0
+#define WRITE_UNLOCK(addr) { \
+	PUT__U8( addr + UNLOCK_ADDR1, UNLOCK_CMD1); \
+	PUT__U8( addr + UNLOCK_ADDR2, UNLOCK_CMD2); \
+}
+
+/* auto select command */
+#define CMD_ID(addr) WRITE_UNLOCK(addr); { \
+	PUT__U8( addr + ID_ADDR, ID_CMD); \
+}
+
+#define CMD_RESET(addr) WRITE_UNLOCK(addr); { \
+	PUT__U8( addr + ID_ADDR, RESET_CMD); \
+}
+
+#define CMD_ERASE_SEC(base, addr) WRITE_UNLOCK(base); \
+	PUT__U8( base + SETUP_ADDR, SETUP_CMD); \
+	WRITE_UNLOCK(base); \
+	PUT__U8( addr, SECERASE_CMD);
+
+#define CMD_ERASE_CHIP(base) WRITE_UNLOCK(base); \
+	PUT__U8( base + SETUP_ADDR, SETUP_CMD); \
+	WRITE_UNLOCK(base); \
+	PUT__U8( base + SETUP_ADDR, CHIPERASE_CMD);
+
+/* prepare for bypass programming */
+#define CMD_UNLOCK_BYPASS(addr) WRITE_UNLOCK(addr); { \
+	PUT__U8( addr + ID_ADDR, 0x20); \
+}
+
+/* terminate bypass programming */
+#define CMD_BYPASS_RESET(addr) { \
+	PUT__U8(addr, 0x90); \
+	PUT__U8(addr, 0x00); \
+}
+#endif
+
+inline static void FLASH_CMD_UNLOCK (FLASH_DEV dev, u32 base)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		PUT__U8 (base + 0xAAA, 0xAA);
+		PUT__U8 (base + 0x555, 0x55);
+		break;
+	case FLASH_DEV_U9_512KB:
+		PUT__U8 (base + 0x555, 0xAA);
+		PUT__U8 (base + 0x2AA, 0x55);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_SELECT (FLASH_DEV dev, u32 base)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0xAAA, SELECT_CMD);
+		break;
+	case FLASH_DEV_U9_512KB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0x555, SELECT_CMD);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_RESET (FLASH_DEV dev, u32 base)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0xAAA, RESET_CMD);
+		break;
+	case FLASH_DEV_U9_512KB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0x555, RESET_CMD);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_ERASE_SEC (FLASH_DEV dev, u32 base, u32 addr)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0xAAA, SETUP_CMD);
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (addr, SECERASE_CMD);
+		break;
+	case FLASH_DEV_U9_512KB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0x555, SETUP_CMD);
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (addr, SECERASE_CMD);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_ERASE_CHIP (FLASH_DEV dev, u32 base)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0xAAA, SETUP_CMD);
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base, CHIPERASE_CMD);
+		break;
+	case FLASH_DEV_U9_512KB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0x555, SETUP_CMD);
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base, CHIPERASE_CMD);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_UNLOCK_BYPASS (FLASH_DEV dev, u32 base)
+{
+	switch (dev) {
+	case FLASH_DEV_U7_2MB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0xAAA, BYPASS_CMD);
+		break;
+	case FLASH_DEV_U9_512KB:
+		FLASH_CMD_UNLOCK (dev, base);
+		PUT__U8 (base + 0x555, BYPASS_CMD);
+		break;
+	}
+}
+
+inline static void FLASH_CMD_BYPASS_RESET (FLASH_DEV dev, u32 base)
+{
+	PUT__U8 (base, SELECT_CMD);
+	PUT__U8 (base, 0x0);
+}
+
+/* poll for flash command completion */
+static u16 _flash_poll (FLASH_DEV dev, u32 addr, u16 data, ulong timeOut)
+{
+	u32 done = 0;
+	ulong t0;
+
+	u16 error = 0;
+	volatile u16 flashData;
+
+	data = data & 0xFF;
+	t0 = get_timer (0);
+	while (get_timer (t0) < timeOut) {
+		/*	for( i = 0; i < POLL_LOOPS; i++) { */
+		/*  Read the Data */
+		flashData = GET__U8 (addr);
+
+		/*  FLASH_DQ7 = Data? */
+		if ((flashData & FLASH_DQ7) == (data & FLASH_DQ7)) {
+			done = 1;
+			break;
+		}
+
+		/*  Check Timeout (FLASH_DQ5==1) */
+		if (flashData & FLASH_DQ5) {
+			/*  Read the Data */
+			flashData = GET__U8 (addr);
+
+			/*  FLASH_DQ7 = Data? */
+			if (!((flashData & FLASH_DQ7) == (data & FLASH_DQ7))) {
+				printf ("_flash_poll(): FLASH_DQ7 & flashData not equal to write value\n");
+				error = ERR_PROG_ERROR;
+			}
+			FLASH_CMD_RESET (dev, addr);
+			done = 1;
+			break;
+		}
+		/*  spin delay */
+		udelay (10);
+	}
+
+
+	/*  error update */
+	if (!done) {
+		printf ("_flash_poll(): Timeout\n");
+		error = ERR_TIMOUT;
+	}
+
+	/*  Check the data */
+	if (!error) {
+		/*  Read the Data */
+		flashData = GET__U8 (addr);
+		if (flashData != data) {
+			error = ERR_PROG_ERROR;
+			printf ("_flash_poll(): flashData(0x%04x) not equal to data(0x%04x)\n",
+				flashData, data);
+		}
+	}
+
+	return error;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static int _flash_check_protection (flash_info_t * info, int s_first, int s_last)
+{
+	int sect, prot = 0;
+
+	for (sect = s_first; sect <= s_last; sect++)
+		if (info->protect[sect]) {
+			printf ("  Flash sector %d protected.\n", sect);
+			prot++;
+		}
+	return prot;
+}
+
+static int _detectFlash (FLASH_DEV dev, u32 base, u8 venId, u8 devId)
+{
+
+	u32 baseAddr = base | CACHE_DISABLE_MASK;
+	u8 vendorId, deviceId;
+
+	/*	printf(__FUNCTION__"(): detecting flash @ 0x%08x\n", base); */
+
+	/* Send auto select command and read manufacturer info */
+	FLASH_CMD_SELECT (dev, baseAddr);
+	vendorId = GET__U8 (baseAddr);
+	FLASH_CMD_RESET (dev, baseAddr);
+
+	/* Send auto select command and read device info */
+	FLASH_CMD_SELECT (dev, baseAddr);
+
+	if (dev == FLASH_DEV_U7_2MB) {
+		deviceId = GET__U8 (baseAddr + 2);
+	} else if (dev == FLASH_DEV_U9_512KB) {
+		deviceId = GET__U8 (baseAddr + 1);
+	} else {
+		return 0;
+	}
+
+	FLASH_CMD_RESET (dev, baseAddr);
+
+	/* printf (__FUNCTION__"(): found vendorId 0x%04x, deviceId 0x%04x\n",
+		vendorId, deviceId);
+	 */
+
+	return (vendorId == venId) && (deviceId == devId);
+
+}
+
+/******************************************************************************
+ *
+ * Public u-boot interface functions below
+ *
+ *****************************************************************************/
+
+/***************************************************************************
+ *
+ * Flash initialization
+ *
+ * This board has two banks of flash, but the base addresses depend on
+ * how the board is jumpered.
+ *
+ * The two flash types are:
+ *
+ *   AMD Am29LV160DB (2MB) sectors layout 16KB, 2x8KB, 32KB, 31x64KB
+ *
+ *   AMD Am29LV040B  (512KB)  sectors: 8x64KB
+ *****************************************************************************/
+
+unsigned long flash_init (void)
+{
+	flash_info_t *info;
+	u16 i;
+	u32 flashtest;
+	s16 amd160 = -1;
+	u32 amd160base = 0;
+
+#if CFG_MAX_FLASH_BANKS == 2
+	s16 amd040 = -1;
+	u32 amd040base = 0;
+#endif
+
+	/* configure PHYS_FLASH_1 */
+	if (_detectFlash (FLASH_DEV_U7_2MB, PHYS_FLASH_1, 0x1, 0x49)) {
+		amd160 = 0;
+		amd160base = PHYS_FLASH_1;
+#if CFG_MAX_FLASH_BANKS == 1
+	}
+#else
+		if (_detectFlash
+		    (FLASH_DEV_U9_512KB, PHYS_FLASH_2, 0x1, 0x4F)) {
+			amd040 = 1;
+			amd040base = PHYS_FLASH_2;
+		} else {
+			printf (__FUNCTION__
+				"(): Unable to detect PHYS_FLASH_2: 0x%08x\n",
+				PHYS_FLASH_2);
+		}
+	} else if (_detectFlash (FLASH_DEV_U9_512KB, PHYS_FLASH_1, 0x1, 0x4F)) {
+		amd040 = 0;
+		amd040base = PHYS_FLASH_1;
+		if (_detectFlash (FLASH_DEV_U7_2MB, PHYS_FLASH_2, 0x1, 0x49)) {
+			amd160 = 1;
+			amd160base = PHYS_FLASH_2;
+		} else {
+			printf (__FUNCTION__
+				"(): Unable to detect PHYS_FLASH_2: 0x%08x\n",
+				PHYS_FLASH_2);
+		}
+	}
+#endif
+	else {
+		printf (__FUNCTION__
+			"(): Unable to detect PHYS_FLASH_1: 0x%08x\n",
+			PHYS_FLASH_1);
+	}
+
+	/* Configure AMD Am29LV160DB (2MB) */
+	info = &flash_info[amd160];
+	info->flash_id = FLASH_DEV_U7_2MB;
+	info->sector_count = 35;
+	info->size = 2 * 1024 * 1024;	/* 2MB */
+	/* 1*16K Boot Block
+	   2*8K Parameter Block
+	   1*32K Small Main Block */
+	info->start[0] = amd160base;
+	info->start[1] = amd160base + 0x4000;
+	info->start[2] = amd160base + 0x6000;
+	info->start[3] = amd160base + 0x8000;
+	for (i = 1; i < info->sector_count; i++)
+		info->start[3 + i] = amd160base + i * (64 * 1024);
+
+	for (i = 0; i < info->sector_count; i++) {
+		/* Write auto select command sequence and query sector protection */
+		FLASH_CMD_SELECT (info->flash_id,
+				  info->start[i] | CACHE_DISABLE_MASK);
+		flashtest =
+			GET__U8 (((info->start[i] + 4) | CACHE_DISABLE_MASK));
+		FLASH_CMD_RESET (info->flash_id,
+				 amd160base | CACHE_DISABLE_MASK);
+		info->protect[i] = (flashtest & 0x0001);
+	}
+
+	/*
+	 * protect monitor and environment sectors in 2MB flash
+	 */
+	flash_protect (FLAG_PROTECT_SET,
+		       amd160base, amd160base + monitor_flash_len - 1, info);
+
+	flash_protect (FLAG_PROTECT_SET,
+		       CFG_ENV_ADDR, CFG_ENV_ADDR + CFG_ENV_SIZE - 1, info);
+
+#if CFG_MAX_FLASH_BANKS == 2
+	/* Configure AMD Am29LV040B (512KB) */
+	info = &flash_info[amd040];
+	info->flash_id = FLASH_DEV_U9_512KB;
+	info->sector_count = 8;
+	info->size = 512 * 1024;	/* 512KB, 8 x 64KB */
+	for (i = 0; i < info->sector_count; i++) {
+		info->start[i] = amd040base + i * (64 * 1024);
+		/* Write auto select command sequence and query sector protection */
+		FLASH_CMD_SELECT (info->flash_id,
+				  info->start[i] | CACHE_DISABLE_MASK);
+		flashtest =
+			GET__U8 (((info->start[i] + 2) | CACHE_DISABLE_MASK));
+		FLASH_CMD_RESET (info->flash_id,
+				 amd040base | CACHE_DISABLE_MASK);
+		info->protect[i] = (flashtest & 0x0001);
+	}
+#endif
+
+	return flash_info[0].size
+#if CFG_MAX_FLASH_BANKS == 2
+		+ flash_info[1].size
+#endif
+		;
+}
+
+void flash_print_info (flash_info_t * info)
+{
+	int i;
+
+	if (info->flash_id == FLASH_DEV_U7_2MB) {
+		printf ("AMD Am29LV160DB (2MB) 16KB,2x8KB,32KB,31x64KB\n");
+	} else if (info->flash_id == FLASH_DEV_U9_512KB) {
+		printf ("AMD Am29LV040B	 (512KB) 8x64KB\n");
+	} else {
+		printf ("Unknown flash_id ...\n");
+		return;
+	}
+
+	printf ("  Size: %ld KB in %d Sectors\n",
+		info->size >> 10, info->sector_count);
+	printf ("  Sector Start Addresses:");
+	for (i = 0; i < info->sector_count; i++) {
+		if ((i % 4) == 0)
+			printf ("\n   ");
+		printf (" S%02d @ 0x%08lX%s", i,
+			info->start[i], info->protect[i] ? " !" : "  ");
+	}
+	printf ("\n");
+}
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	u16 i, error = 0;
+
+	printf ("\n");
+
+	/* check flash protection bits */
+	if (_flash_check_protection (info, s_first, s_last)) {
+		printf ("  Flash erase aborted due to protected sectors\n");
+		return ERR_PROTECTED;
+	}
+
+	if ((s_first < info->sector_count) && (s_first <= s_last)) {
+		for (i = s_first; i <= s_last && !error; i++) {
+			printf ("  Erasing Sector %d @ 0x%08lx ... ", i,
+				info->start[i]);
+			/* bypass the cache to access the flash memory */
+			FLASH_CMD_ERASE_SEC (info->flash_id,
+					     (info->
+					      start[0] | CACHE_DISABLE_MASK),
+					     (info->
+					      start[i] | CACHE_DISABLE_MASK));
+			/* look for sector to become 0xFF after erase */
+			error = _flash_poll (info->flash_id,
+					     info->
+					     start[i] | CACHE_DISABLE_MASK,
+					     0xFF, CFG_FLASH_ERASE_TOUT);
+			FLASH_CMD_RESET (info->flash_id,
+					 (info->
+					  start[0] | CACHE_DISABLE_MASK));
+			printf ("done\n");
+			if (error) {
+				break;
+			}
+		}
+	} else
+		error = ERR_INVAL;
+
+	return error;
+}
+
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	u16 error = 0, i;
+	u32 n;
+	u8 *bp, *bps;
+
+	/*  Write Setup */
+	/* bypass the cache to access the flash memory */
+	FLASH_CMD_UNLOCK_BYPASS (info->flash_id,
+				 (info->start[0] | CACHE_DISABLE_MASK));
+
+	/*  Write the Data to Flash */
+
+	bp = (u8 *) (addr | CACHE_DISABLE_MASK);
+	bps = (u8 *) src;
+
+	for (n = 0; n < cnt && !error; n++, bp++, bps++) {
+
+		if (!(n % (cnt / 15))) {
+			printf (".");
+		}
+
+		/*  write the flash command for flash memory */
+		*bp = 0xA0;
+
+		/*  Write the data */
+		*bp = *bps;
+
+		/*  Check if the write is done */
+		for (i = 0; i < 0xff; i++);
+		error = _flash_poll (info->flash_id, (u32) bp, *bps,
+				     CFG_FLASH_WRITE_TOUT);
+		if (error) {
+			return error;
+		}
+	}
+
+	/*  Reset the Flash Mode to read */
+	FLASH_CMD_BYPASS_RESET (info->flash_id, info->start[0]);
+
+	printf (" ");
+
+	return error;
+}
diff --git a/board/evb4510/memsetup.S b/board/evb4510/memsetup.S
new file mode 100644
index 0000000..915af1e
--- /dev/null
+++ b/board/evb4510/memsetup.S
@@ -0,0 +1,157 @@
+/*
+ * 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
+ */
+
+
+#include <config.h>
+#include <version.h>
+#include <asm/hardware.h>
+
+/***********************************************************************
+ * Configure Memory Map
+ *
+ * This memory map allows us to relocate from FLASH to SRAM.  After
+ * power-on reset the CPU only knows about the FLASH memory at address
+ * 0x00000000.	After memsetup completes the memory map will be:
+ *
+ * Memory Addr
+ * 0x00000000
+ *     to	8MB SRAM (U5) -- 8MB Map
+ * 0x00800000
+ *
+ * 0x01000000
+ *     to	2MB Flash @ 0x00000000 (U7) -- 2MB Map
+ * 0x01200000
+ *
+ * 0x02000000
+ *     to	512KB Flash @ 0x02000000 (U9) -- 2MB Map
+ * 0x02080000
+ *
+ * Load all 12 memory registers with the STMIA instruction since
+ * memory access is disabled once these registers are written.	The
+ * last register written re-enables memory access.  For more info see
+ * the user's manual for the S3C4510B, available from Samsung's web
+ * site.  Search for part number "S3C4510B".
+ *
+ ***********************************************************************/
+
+.globl memsetup
+memsetup:
+
+	/* preserve the temp register (r12 AKA ip) and remap it. */
+	ldr r1, =SRAM_BASE+0xC
+	add r0, r12, #0x01000000
+	str r0, [r1]
+
+	/* remap the link register for when we return */
+	add lr, lr, #0x01000000
+
+	/* store a short program in the on chip SRAM, which is
+	 * unaffected when remapping memory.  Note the cache must be
+	 * disabled for the on chip SRAM to be available.
+	 */
+	ldr r1, =SRAM_BASE
+	ldr r0, =0xe8801ffe  /* stmia r0, {r1-r12} */
+	str r0, [r1]
+	add r1, r1, #4
+	ldr r0, =0xe59fc000  /* ldr r12, [pc, #0]  */
+	str r0, [r1]
+	add r1, r1, #4
+	ldr r0, =0xe1a0f00e  /* mov pc, lr	   */
+	str r0, [r1]
+
+	adr   r0, memory_map_data
+	ldmia r0, {r1-r12}
+	ldr   r0, =REG_EXTDBWTH
+
+	ldr pc, =SRAM_BASE
+
+.globl reset_cpu
+reset_cpu:
+	/*
+	 * reset the cpu by re-mapping FLASH 0 to 0x0 and jumping to
+	 * address 0x0.	 We accomplish this by storing a few
+	 * instructions into the on chip SRAM (8KB) and run from
+	 * there.  Note the cache must be disabled for the on chip
+	 * SRAM to be available.
+	 *
+	 * load r2 with REG_ROMCON0
+	 * load r3 with 0x12040060	   configure FLASH bank 0 @ 0x00000000
+	 * load r4 with REG_DRAMCON0
+	 * load r5 with 0x08000380	   configure   RAM bank 0 @ 0x01000000
+	 * load r6 with REG_REFEXTCON
+	 * load r7 with 0x9c218360
+	 * load r8 with 0x0
+	 * store str r3,[r2] @ SRAM_BASE
+	 * store str r5,[r4] @ SRAM_BASE + 0x4
+	 * store str r7,[r6] @ SRAM_BASE + 0x8
+	 * store mov pc,r8   @ SRAM_BASE + 0xC
+	 * mov pc, SRAM_BASE
+	 *
+	 */
+
+	/* disable cache */
+	ldr r0, =REG_SYSCFG
+	ldr r1, =0x83ffffa0	/* cache-disabled  */
+	str r1, [r0]
+
+	ldr r2, =REG_ROMCON0
+	ldr r3, =0x02000060	/* Bank0 2MB FLASH   @ 0x00000000 */
+	ldr r4, =REG_DRAMCON0
+	ldr r5, =0x18040380	/* DRAM0 8MB SRAM    @ 0x01000000 */
+	ldr r6, =REG_REFEXTCON
+	ldr r7, =0xce278360
+	ldr r8, =0x00000000
+	ldr r1, =SRAM_BASE
+	ldr r0, =0xe5823000	/* str	r3, [r2] */
+	str r0, [r1]
+	ldr r1, =SRAM_BASE+4
+	ldr r0, =0xe5845000	/* str	r5, [r4] */
+	str r0, [r1]
+	ldr r1, =SRAM_BASE+8
+	ldr r0, =0xe5867000	/* str	r7, [r6] */
+	str r0, [r1]
+	ldr r1, =SRAM_BASE+0xC
+	ldr r0, =0xe1a0f008	/* mov	pc, r8	 */
+	str r0, [r1]
+	ldr r1, =SRAM_BASE
+	mov pc, r1
+
+	/* never return */
+
+/************************************************************************
+ * Below are twelve 32-bit values for the twelve memory registers of
+ * the system manager, starting with register REG_EXTDBWTH.
+ ***********************************************************************/
+memory_map_data:
+	.long 0x00f03005     /* memory widths */
+	.long 0x12040060     /* Bank0 2MB FLASH	  @ 0x01000000 */
+	.long 0x22080060     /* Bank1 512KB FLASH @ 0x02000000 */
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x08000380     /* DRAM0 8MB SRAM	  @ 0x00000000 */
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x00000000
+	.long 0x9c218360     /* enable memory */
diff --git a/board/evb4510/u-boot.lds b/board/evb4510/u-boot.lds
new file mode 100644
index 0000000..9899790
--- /dev/null
+++ b/board/evb4510/u-boot.lds
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text	   :
+	{
+	  cpu/arm720t/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(.rodata) }
+
+	. = ALIGN(4);
+	.data : { *(.data) }
+
+	. = ALIGN(4);
+	.got : { *(.got) }
+
+	__u_boot_cmd_start = .;
+	.u_boot_cmd : { *(.u_boot_cmd) }
+	__u_boot_cmd_end = .;
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss : { *(.bss) }
+	_end = .;
+				  /* Stabs debugging sections.	  */
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug_abbrev 0 : { *(.debug_abbrev) }
+	.debug_info 0 : { *(.debug_info) }
+	.debug_line 0 : { *(.debug_line) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_aranges 0 : { *(.debug_aranges) }
+}