[U-Boot] [PATCH 01/10] ARM Add New Board GEC2410

* [U-Boot]  [PATCH 01/10] ARM Add New Board GEC2410
@ 2009-10-30 10:39 Hui.Tang
  2009-10-30 10:39 ` [U-Boot] [PATCH 02/10] " Hui.Tang
  2009-10-31 19:52 ` [U-Boot] [PATCH 01/10] " Wolfgang Denk
  0 siblings, 2 replies; 28+ messages in thread
From: Hui.Tang @ 2009-10-30 10:39 UTC (permalink / raw)
  To: u-boot

New Board GEC2410 Setup.

Signed-off-by: Hui.Tang <zetalabs@gmail.com>
---
 board/gec/gec2410/Makefile        |   54 +++++
 board/gec/gec2410/README          |   85 ++++++++
 board/gec/gec2410/config.mk       |   32 +++
 board/gec/gec2410/flash.c         |  417 +++++++++++++++++++++++++++++++++++++
 board/gec/gec2410/gec2410.c       |  150 +++++++++++++
 board/gec/gec2410/lowlevel_init.S |  171 +++++++++++++++
 board/gec/gec2410/u-boot-nand.lds |   61 ++++++
 7 files changed, 970 insertions(+), 0 deletions(-)
 create mode 100644 board/gec/gec2410/Makefile
 create mode 100644 board/gec/gec2410/README
 create mode 100644 board/gec/gec2410/config.mk
 create mode 100644 board/gec/gec2410/flash.c
 create mode 100644 board/gec/gec2410/gec2410.c
 create mode 100644 board/gec/gec2410/lowlevel_init.S
 create mode 100644 board/gec/gec2410/u-boot-nand.lds

diff --git a/board/gec/gec2410/Makefile b/board/gec/gec2410/Makefile
new file mode 100644
index 0000000..b0a216f
--- /dev/null
+++ b/board/gec/gec2410/Makefile
@@ -0,0 +1,54 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+#
+# (C) Copyright 2009
+# Hui Tang <zetalabs@gmail.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 $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS	:= gec2410.o flash.o
+SOBJS	:= lowlevel_init.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/gec/gec2410/README b/board/gec/gec2410/README
new file mode 100644
index 0000000..952aae8
--- /dev/null
+++ b/board/gec/gec2410/README
@@ -0,0 +1,85 @@
+U-Boot for GEC2410
+
+------------------------------------------------
+The supported features of the GEC2410 board are:
+    CPU (Samsung S3C2410 SoC)
+    SDRAM (64 MB , 2 pcs K4S561632, 32 bit)
+    NAND FLASH (64MB , 1 pcs K9F1208)
+    NOR FLASH (only on rev1.1 board, 2MB , 1 pcs SST39VF1601)
+    ETHERNET (10M , 1 pcs CS8900)
+
+
+------------------------------------------------
+Memory Map from CPU point of view:
+
+for NAND FLASH boot:
+    Start	 Size	Access to
+    -----------------------------------------------------
+    0x00000000	 64MB	NAND FLASH (first 4K SRAM for stepptingstone)
+    0x19000300		CS8900 I/O base
+    0x30000000	 64MB	SDRAM
+    0x48000000	 128MB	Special Function Registers Area
+
+
+for NOR FLASH boot:
+    Start	 Size	Access to
+    -----------------------------------------------------
+    0x00000000	 2MB	NOR FLASH
+    0x19000300		CS8900 I/O base
+    0x30000000	 64MB	SDRAM
+    0x40000000	 4KB	BootSRAM
+    0x48000000	 128MB	Special Function Registers Area
+
+
+------------------------------------------------
+Setting the board Jumpers & Switches:
+
+   In order to get the board running with the default configuration the
+   jumpers need to be set as follows:
+
+  Core board Jumpers:
+   JP1	close	(Set boot mode, close for booting from NAND FLASH,
+		 otherwise from NOR FLASH)
+
+  Main board Jumpers:
+   J1		close	(Set beep, close for enabling beep, or disabling beep)
+   J18		1-2	(1-2 set RXD2 as UART; 2-3 set RXD2 as IrDA)
+   J9,J10	2-3	(1-2 set USB HOST 1 to Host mode;
+			 2-3 set USB HOST 1 to Device mode)
+   J13		1-2	(1-2 set LCD working power to 5V;
+			 2-3 set LCD working power to 3.3V)
+
+  Core board Switches:
+   S1		open	(Reset button)
+
+  Main board Switches:
+   K1~K16	open	(4x4 keyboard)
+
+
+------------------------------------------------
+LED & Connector Interfaces:
+
+  Core board LEDs:
+   D1,D2	I/O port
+   D3		PWREN pin LED
+   D4		Core board power
+
+  Main board LEDs:
+   D1~D4	GPIO
+   D5,D6	Ethernet
+   D11		Main board power
+
+  Core board Connector Interfaces:
+   J1		JTAG (20 pins)
+
+  Main board Connector Interfaces:
+   RJ1		Ethernet (RJ45)
+   J2		Audio In
+   J3		Audio Out
+   J4		Serial Port 1
+   J5		Serial Port 2
+   U4		IrDA Port
+   J7		USB HOST 0
+   J9		USB HOST 1 / USB DEVICE
+   J11		USB DEVICE
+   J20		GPIO Pins
diff --git a/board/gec/gec2410/config.mk b/board/gec/gec2410/config.mk
new file mode 100644
index 0000000..9c8e291
--- /dev/null
+++ b/board/gec/gec2410/config.mk
@@ -0,0 +1,32 @@
+#
+# (C) Copyright 2002
+# Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+# David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+#
+# GuangDong Embedded Software Center GEC2410 board with S3C2410X (ARM920T) cpu
+#
+# see http://www.gd-emb.com/sales_detail/menu-2410.html for more information on GEC2410
+#
+
+#
+# GEC2410 has 1 bank of 64 MB DRAM
+#
+# 3000'0000 to 3400'0000
+#
+# Linux-Kernel is expected to be at 3000'8000, entry 3000'8000
+# optionally with a ramdisk at 3080'0000
+#
+# we load ourself to 33e0'0000
+#
+# download area is 3300'c000
+#
+
+sinclude $(OBJTREE)/board/$(BOARDDIR)/config.tmp
+
+ifndef CONFIG_NAND_SPL
+TEXT_BASE = $(RAM_TEXT)
+else
+TEXT_BASE = 0
+endif
+
+LDSCRIPT := $(SRCTREE)/board/$(BOARDDIR)/u-boot-nand.lds
diff --git a/board/gec/gec2410/flash.c b/board/gec/gec2410/flash.c
new file mode 100644
index 0000000..ab418b1
--- /dev/null
+++ b/board/gec/gec2410/flash.c
@@ -0,0 +1,417 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * (C) Copyright 2009
+ * Hui Tang <zetalabs@gmail.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>
+
+#define FLASH_BANK_SIZE	PHYS_FLASH_SIZE
+#define MAIN_SECT_SIZE  0x10000	/* 64 KB */
+
+flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
+
+#define CMD_READ_ARRAY		0x000000F0
+#define CMD_UNLOCK1		0x000000AA
+#define CMD_UNLOCK2		0x00000055
+#define CMD_ERASE_SETUP		0x00000080
+#define CMD_ERASE_CONFIRM	0x00000030
+#define CMD_PROGRAM		0x000000A0
+#define CMD_UNLOCK_BYPASS	0x00000020
+
+#define MEM_FLASH_ADDR1		(*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 1)))
+#define MEM_FLASH_ADDR2		(*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA << 1)))
+
+#define BIT_ERASE_DONE		0x00000080
+#define BIT_RDY_MASK		0x00000080
+#define BIT_PROGRAM_ERROR	0x00000020
+#define BIT_TIMEOUT		0x80000000	/* our flag */
+
+#define READY 1
+#define ERR   2
+#define TMO   4
+
+/*-----------------------------------------------------------------------
+ */
+
+ulong flash_init(void)
+{
+	int i, j;
+	ulong size = 0;
+
+	for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
+		ulong flashbase = 0;
+
+		flash_info[i].flash_id =
+			(SST_MANUFACT & FLASH_VENDMASK) |
+			(SST_ID_xF1601 & FLASH_TYPEMASK);
+			flash_info[i].size = FLASH_BANK_SIZE;
+		flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
+		memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
+		if (i == 0)
+			flashbase = PHYS_FLASH_1;
+		else
+			panic("configured too many flash banks!\n");
+		for (j = 0; j < flash_info[i].sector_count; j++) {
+			if (j <= 3) {
+				/* 1st one is 16 KB */
+				if (j == 0) {
+					flash_info[i].start[j] =
+						flashbase + 0;
+				}
+
+				/* 2nd and 3rd are both 8 KB */
+				if ((j == 1) || (j == 2)) {
+					flash_info[i].start[j] =
+						flashbase + 0x4000 + (j -
+								      1) *
+						0x2000;
+				}
+
+				/* 4th 32 KB */
+				if (j == 3) {
+					flash_info[i].start[j] =
+						flashbase + 0x8000;
+				}
+			} else {
+				flash_info[i].start[j] =
+					flashbase + (j - 3) * MAIN_SECT_SIZE;
+			}
+		}
+		size += flash_info[i].size;
+	}
+
+	flash_protect(FLAG_PROTECT_SET,
+		      CONFIG_SYS_FLASH_BASE,
+		      CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
+		      &flash_info[0]);
+
+	flash_protect(FLAG_PROTECT_SET,
+		      CONFIG_ENV_ADDR,
+		      CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info(flash_info_t *info)
+{
+	int i;
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case (SST_MANUFACT & FLASH_VENDMASK):
+		printf("SST: ");
+		break;
+	default:
+		printf("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case (SST_ID_xF1601 & FLASH_TYPEMASK):
+		printf("1x SST39xF1601 (16Mbit)\n");
+		break;
+	default:
+		printf("Unknown Chip Type\n");
+		goto Done;
+		break;
+	}
+
+	printf("  Size: %ld MB in %d Sectors\n",
+		info->size >> 20, info->sector_count);
+
+	printf("  Sector Start Addresses:");
+	for (i = 0; i < info->sector_count; i++) {
+		if ((i % 5) == 0)
+			printf("\n   ");
+		printf(" %08lX%s", info->start[i],
+			info->protect[i] ? " (RO)" : "     ");
+	}
+	printf("\n");
+
+Done:;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase(flash_info_t *info, int s_first, int s_last)
+{
+	ushort result;
+	int iflag, cflag, prot, sect;
+	int rc = ERR_OK;
+	int chip;
+
+	/* first look for protection bits */
+
+	if (info->flash_id == FLASH_UNKNOWN)
+		return ERR_UNKNOWN_FLASH_TYPE;
+
+	if ((s_first < 0) || (s_first > s_last))
+		return ERR_INVAL;
+
+	if ((info->flash_id & FLASH_VENDMASK) !=
+	    (SST_MANUFACT & FLASH_VENDMASK))
+		return ERR_UNKNOWN_FLASH_VENDOR;
+
+	prot = 0;
+	for (sect = s_first; sect <= s_last; ++sect) {
+		if (info->protect[sect])
+			prot++;
+	}
+	if (prot)
+		return ERR_PROTECTED;
+
+	/*
+	 * Disable interrupts which might cause a timeout
+	 * here. Remember that our exception vectors are
+	 * at address 0 in the flash, and we don't want a
+	 * (ticker) exception to happen while the flash
+	 * chip is in programming mode.
+	 */
+	cflag = icache_status();
+	icache_disable();
+	iflag = disable_interrupts();
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last && !ctrlc(); sect++) {
+		printf("Erasing sector %2d ... ", sect);
+
+		/* arm simple, non interrupt dependent timer */
+		reset_timer_masked();
+
+		if (info->protect[sect] == 0) {	/* not protected */
+			vu_short *addr = (vu_short *) (info->start[sect]);
+
+			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+			MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+
+			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+			*addr = CMD_ERASE_CONFIRM;
+
+			/* wait until flash is ready */
+			chip = 0;
+
+			do {
+				result = *addr;
+
+				/* check timeout */
+				if (get_timer_masked() >
+				    CONFIG_SYS_FLASH_ERASE_TOUT) {
+					MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+					chip = TMO;
+					break;
+				}
+
+				if (!chip
+				    && (result & 0xFFFF) & BIT_ERASE_DONE)
+					chip = READY;
+
+				if (!chip
+				    && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
+					chip = ERR;
+
+			} while (!chip);
+
+			MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+			if (chip == ERR) {
+				rc = ERR_PROG_ERROR;
+				goto outahere;
+			}
+			if (chip == TMO) {
+				rc = ERR_TIMOUT;
+				goto outahere;
+			}
+
+			printf("ok.\n");
+		} else {	/* it was protected */
+
+			printf("protected!\n");
+		}
+	}
+
+	if (ctrlc())
+		printf("User Interrupt!\n");
+
+outahere:
+	/* allow flash to settle - wait 10 ms */
+	udelay_masked(10000);
+
+	if (iflag)
+		enable_interrupts();
+
+	if (cflag)
+		icache_enable();
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+static int write_hword(flash_info_t *info, ulong dest, ushort data)
+{
+	vu_short *addr = (vu_short *) dest;
+	ushort result;
+	int rc = ERR_OK;
+	int cflag, iflag;
+	int chip;
+
+	/*
+	 * Check if Flash is (sufficiently) erased
+	 */
+	result = *addr;
+	if ((result & data) != data)
+		return ERR_NOT_ERASED;
+
+
+	/*
+	 * Disable interrupts which might cause a timeout
+	 * here. Remember that our exception vectors are
+	 * at address 0 in the flash, and we don't want a
+	 * (ticker) exception to happen while the flash
+	 * chip is in programming mode.
+	 */
+	cflag = icache_status();
+	icache_disable();
+	iflag = disable_interrupts();
+
+	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+	MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
+	*addr = CMD_PROGRAM;
+	*addr = data;
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked();
+
+	/* wait until flash is ready */
+	chip = 0;
+	do {
+		result = *addr;
+
+		/* check timeout */
+		if (get_timer_masked() > CONFIG_SYS_FLASH_ERASE_TOUT) {
+			chip = ERR | TMO;
+			break;
+		}
+		if (!chip && ((result & 0x80) == (data & 0x80)))
+			chip = READY;
+
+		if (!chip && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) {
+			result = *addr;
+
+			if ((result & 0x80) == (data & 0x80))
+				chip = READY;
+			else
+				chip = ERR;
+		}
+
+	} while (!chip);
+
+	*addr = CMD_READ_ARRAY;
+
+	if (chip == ERR || *addr != data)
+		rc = ERR_PROG_ERROR;
+
+	if (iflag)
+		enable_interrupts();
+
+	if (cflag)
+		icache_enable();
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+	ulong cp, wp;
+	int l;
+	int i, rc;
+	ushort data;
+
+	wp = (addr & ~1);	/* get lower word aligned address */
+
+	/*
+	 * handle unaligned start bytes
+	 */
+	l = addr - wp;
+	if (l != 0) {
+		data = 0;
+		for (i = 0, cp = wp; i < l; ++i, ++cp)
+			data = (data >> 8) | (*(uchar *) cp << 8);
+
+		for (; i < 2 && cnt > 0; ++i) {
+			data = (data >> 8) | (*src++ << 8);
+			--cnt;
+			++cp;
+		}
+
+		for (; cnt == 0 && i < 2; ++i, ++cp)
+			data = (data >> 8) | (*(uchar *) cp << 8);
+
+		rc = write_hword(info, wp, data);
+		if (rc != 0)
+			return rc;
+		wp += 2;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 2) {
+		data = *((vu_short *) src);
+		rc = write_hword(info, wp, data);
+		if (rc != 0)
+			return rc;
+		src += 2;
+		wp += 2;
+		cnt -= 2;
+	}
+
+	if (cnt == 0)
+		return ERR_OK;
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
+		data = (data >> 8) | (*src++ << 8);
+		--cnt;
+	}
+	for (; i < 2; ++i, ++cp)
+		data = (data >> 8) | (*(uchar *) cp << 8);
+
+	return write_hword(info, wp, data);
+}
diff --git a/board/gec/gec2410/gec2410.c b/board/gec/gec2410/gec2410.c
new file mode 100644
index 0000000..543ceeb
--- /dev/null
+++ b/board/gec/gec2410/gec2410.c
@@ -0,0 +1,150 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+ *
+ * (C) Copyright 2009
+ * Hui Tang, <zetalabs@gmail.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 <netdev.h>
+#include <s3c2410.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define FCLK_SPEED 1
+
+#if FCLK_SPEED == 0		/* Fout = 203MHz, Fin = 12MHz for Audio */
+#define M_MDIV	0xC3
+#define M_PDIV	0x4
+#define M_SDIV	0x1
+#elif FCLK_SPEED == 1		/* Fout = 202.8MHz */
+#define M_MDIV	0xA1
+#define M_PDIV	0x3
+#define M_SDIV	0x1
+#endif
+
+#define USB_CLOCK 1
+
+#if USB_CLOCK == 0
+#define U_M_MDIV	0xA1
+#define U_M_PDIV	0x3
+#define U_M_SDIV	0x1
+#elif USB_CLOCK == 1
+#define U_M_MDIV	0x48
+#define U_M_PDIV	0x3
+#define U_M_SDIV	0x2
+#endif
+
+static inline void delay(unsigned long loops)
+{
+	__asm__ volatile ("1:\n"
+	  "subs %0, %1, #1\n"
+	  "bne 1b" : "=r" (loops) : "0" (loops));
+}
+
+/*
+ * Miscellaneous platform dependent initialisations
+ */
+
+int board_init(void)
+{
+	struct s3c24x0_clock_power * const clk_power =
+					s3c24x0_get_base_clock_power();
+	struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
+
+	/* to reduce PLL lock time, adjust the LOCKTIME register */
+	clk_power->LOCKTIME = 0xFFFFFF;
+
+	/* configure MPLL */
+	clk_power->MPLLCON = ((M_MDIV << 12) + (M_PDIV << 4) + M_SDIV);
+
+	/* some delay between MPLL and UPLL */
+	delay(4000);
+
+	/* configure UPLL */
+	clk_power->UPLLCON = ((U_M_MDIV << 12) + (U_M_PDIV << 4) + U_M_SDIV);
+
+	/* some delay between MPLL and UPLL */
+	delay(8000);
+
+	/* set up the I/O ports */
+	gpio->GPACON = 0x007FFFFF;
+	gpio->GPBCON = 0x00044555;
+	gpio->GPBUP = 0x000007FF;
+	gpio->GPCCON = 0xAAAAAAAA;
+	gpio->GPCUP = 0x0000FFFF;
+	gpio->GPDCON = 0xAAAAAAAA;
+	gpio->GPDUP = 0x0000FFFF;
+	gpio->GPECON = 0xAAAAAAAA;
+	gpio->GPEUP = 0x0000FFFF;
+	gpio->GPFCON = 0x000055AA;
+	gpio->GPFUP = 0x000000FF;
+	gpio->GPGCON = 0xFF95FFBA;
+	gpio->GPGUP = 0x0000FFFF;
+	gpio->GPHCON = 0x002AFAAA;
+	gpio->GPHUP = 0x000007FF;
+
+	/* arch number of GEC2410-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_GEC2410;
+
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = 0x30000100;
+
+	icache_enable();
+	dcache_enable();
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
+
+	return 0;
+}
+
+ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
+{
+	if (banknum == 0) {	/* non-CFI boot flash */
+		info->portwidth = FLASH_CFI_16BIT;
+		info->chipwidth = FLASH_CFI_BY16;
+		info->interface = FLASH_CFI_X16;
+		return 1;
+	} else
+		return 0;
+}
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_CS8900
+	rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
+#endif
+	return rc;
+}
+#endif
diff --git a/board/gec/gec2410/lowlevel_init.S b/board/gec/gec2410/lowlevel_init.S
new file mode 100644
index 0000000..4664ac4
--- /dev/null
+++ b/board/gec/gec2410/lowlevel_init.S
@@ -0,0 +1,171 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw at its.tudelft.nl) and
+ *                     Jan-Derk Bakker (J.D.Bakker at its.tudelft.nl)
+ *
+ * Modified for the Samsung SMDK2410 by
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+ *
+ * Copyright (C) 2009 Hui Tang <zetalabs@gmail.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>
+
+
+/* some parameters for the board */
+
+/*
+ *
+ * Taken from linux/arch/arm/boot/compressed/head-s3c2410.S
+ *
+ * Copyright (C) 2002 Samsung Electronics SW.LEE  <hitchcar@sec.samsung.com>
+ *
+ */
+
+#define BWSCON	0x48000000
+
+/* BWSCON */
+#define DW8			(0x0)
+#define DW16			(0x1)
+#define DW32			(0x2)
+#define WAIT			(0x1<<2)
+#define UBLB			(0x1<<3)
+
+#define B1_BWSCON		(DW32)
+#define B2_BWSCON		(DW16)
+#define B3_BWSCON		(DW16 + WAIT + UBLB)
+#define B4_BWSCON		(DW16)
+#define B5_BWSCON		(DW16)
+#define B6_BWSCON		(DW32)
+#define B7_BWSCON		(DW32)
+
+/* BANK0CON */
+#define B0_Tacs			0x0	/*  0clk */
+#define B0_Tcos			0x0	/*  0clk */
+#define B0_Tacc			0x7	/* 14clk */
+#define B0_Tcoh			0x0	/*  0clk */
+#define B0_Tah			0x0	/*  0clk */
+#define B0_Tacp			0x0
+#define B0_PMC			0x0	/* normal */
+
+/* BANK1CON */
+#define B1_Tacs			0x0	/*  0clk */
+#define B1_Tcos			0x0	/*  0clk */
+#define B1_Tacc			0x7	/* 14clk */
+#define B1_Tcoh			0x0	/*  0clk */
+#define B1_Tah			0x0	/*  0clk */
+#define B1_Tacp			0x0
+#define B1_PMC			0x0
+
+#define B2_Tacs			0x0
+#define B2_Tcos			0x0
+#define B2_Tacc			0x7
+#define B2_Tcoh			0x0
+#define B2_Tah			0x0
+#define B2_Tacp			0x0
+#define B2_PMC			0x0
+
+#define B3_Tacs			0x0	/*  0clk */
+#define B3_Tcos			0x3	/*  4clk */
+#define B3_Tacc			0x7	/* 14clk */
+#define B3_Tcoh			0x1	/*  1clk */
+#define B3_Tah			0x0	/*  0clk */
+#define B3_Tacp			0x3     /*  6clk */
+#define B3_PMC			0x0	/* normal */
+
+#define B4_Tacs			0x0	/*  0clk */
+#define B4_Tcos			0x0	/*  0clk */
+#define B4_Tacc			0x7	/* 14clk */
+#define B4_Tcoh			0x0	/*  0clk */
+#define B4_Tah			0x0	/*  0clk */
+#define B4_Tacp			0x0
+#define B4_PMC			0x0	/* normal */
+
+#define B5_Tacs			0x0	/*  0clk */
+#define B5_Tcos			0x0	/*  0clk */
+#define B5_Tacc			0x7	/* 14clk */
+#define B5_Tcoh			0x0	/*  0clk */
+#define B5_Tah			0x0	/*  0clk */
+#define B5_Tacp			0x0
+#define B5_PMC			0x0	/* normal */
+
+#define B6_MT			0x3	/* SDRAM */
+#define B6_Trcd			0x1
+#define B6_SCAN			0x1	/* 9bit */
+
+#define B7_MT			0x3	/* SDRAM */
+#define B7_Trcd			0x1	/* 3clk */
+#define B7_SCAN			0x1	/* 9bit */
+
+/* REFRESH parameter */
+#define REFEN			0x1	/* Refresh enable */
+#define TREFMD			0x0	/* CBR(CAS before RAS)/Auto refresh */
+#define Trp			0x0	/* 2clk */
+#define Trc			0x3	/* 7clk */
+#define Tchr			0x2	/* 3clk */
+#define REFCNT			1113	/* period=15.6us, HCLK=60Mhz, (2048+1-15.6*60) */
+/**************************************/
+
+_TEXT_BASE:
+	.word	TEXT_BASE
+
+.globl lowlevel_init
+lowlevel_init:
+#if defined(CONFIG_NAND_SPL) || !defined(CONFIG_BOOT_NAND)
+	/* memory control configuration */
+	/* make r0 relative the current location so that it */
+	/* reads SMRDATA out of FLASH rather than memory ! */
+	ldr     r0, =SMRDATA
+	ldr	r1, _TEXT_BASE
+	sub	r0, r0, r1
+	ldr	r1, =BWSCON	/* Bus Width Status Controller */
+	add     r2, r0, #13*4
+0:
+	ldr     r3, [r0], #4
+	str     r3, [r1], #4
+	cmp     r2, r0
+	bne     0b
+#endif /* CONFIG_NAND_SPL */
+
+	/* everything is fine now */
+	mov	pc, lr
+
+	.ltorg
+/* the literal pools origin */
+
+SMRDATA:
+    .word (0+(B1_BWSCON<<4)+(B2_BWSCON<<8)+(B3_BWSCON<<12)+(B4_BWSCON<<16)+(B5_BWSCON<<20)+(B6_BWSCON<<24)+(B7_BWSCON<<28))
+    .word ((B0_Tacs<<13)+(B0_Tcos<<11)+(B0_Tacc<<8)+(B0_Tcoh<<6)+(B0_Tah<<4)+(B0_Tacp<<2)+(B0_PMC))
+    .word ((B1_Tacs<<13)+(B1_Tcos<<11)+(B1_Tacc<<8)+(B1_Tcoh<<6)+(B1_Tah<<4)+(B1_Tacp<<2)+(B1_PMC))
+    .word ((B2_Tacs<<13)+(B2_Tcos<<11)+(B2_Tacc<<8)+(B2_Tcoh<<6)+(B2_Tah<<4)+(B2_Tacp<<2)+(B2_PMC))
+    .word ((B3_Tacs<<13)+(B3_Tcos<<11)+(B3_Tacc<<8)+(B3_Tcoh<<6)+(B3_Tah<<4)+(B3_Tacp<<2)+(B3_PMC))
+    .word ((B4_Tacs<<13)+(B4_Tcos<<11)+(B4_Tacc<<8)+(B4_Tcoh<<6)+(B4_Tah<<4)+(B4_Tacp<<2)+(B4_PMC))
+    .word ((B5_Tacs<<13)+(B5_Tcos<<11)+(B5_Tacc<<8)+(B5_Tcoh<<6)+(B5_Tah<<4)+(B5_Tacp<<2)+(B5_PMC))
+    .word ((B6_MT<<15)+(B6_Trcd<<2)+(B6_SCAN))
+    .word ((B7_MT<<15)+(B7_Trcd<<2)+(B7_SCAN))
+    .word ((REFEN<<23)+(TREFMD<<22)+(Trp<<20)+(Trc<<18)+(Tchr<<16)+REFCNT)
+    .word 0x32
+    .word 0x30
+    .word 0x30
diff --git a/board/gec/gec2410/u-boot-nand.lds b/board/gec/gec2410/u-boot-nand.lds
new file mode 100644
index 0000000..a30ece3
--- /dev/null
+++ b/board/gec/gec2410/u-boot-nand.lds
@@ -0,0 +1,61 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <garyj@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
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text      :
+	{
+	  cpu/arm920t/start.o	(.text)
+	  *(.text)
+	}
+
+	. = ALIGN(4);
+	.rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.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);
+	.mmudata : { *(.mmudata) }
+
+	. = ALIGN(4);
+	__bss_start = .;
+	.bss : { *(.bss) . = ALIGN(4); }
+	_end = .;
+}
-- 
1.6.0.4

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