Add support for friendly-arm SBC-2410X board

Patch by JinHua Luo, 01 Sep 2005

6 files changed, 903 insertions, 0 deletions

diff --git a/board/sbc2410x/Makefile b/board/sbc2410x/Makefile
new file mode 100644
index 0000000..ae8665e
--- /dev/null
+++ b/board/sbc2410x/Makefile
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2000, 2001, 2002
+# 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	:= sbc2410x.o flash.o
+SOBJS	:= lowlevel_init.o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $(OBJS) $(SOBJS)
+
+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/sbc2410x/config.mk b/board/sbc2410x/config.mk
new file mode 100644
index 0000000..f244e64
--- /dev/null
+++ b/board/sbc2410x/config.mk
@@ -0,0 +1,23 @@
+#
+# (C) Copyright 2002
+# Gary Jennejohn, DENX Software Engineering, <gj@denx.de>
+# David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+#
+# SAMSUNG SMDK2410 board with S3C2410X (ARM920T) cpu
+#
+# see http://www.samsung.com/ for more information on SAMSUNG
+#
+
+#
+# SMDK2410 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 33F8'0000
+#
+# download area is 3300'0000
+
+TEXT_BASE = 0x33F80000
diff --git a/board/sbc2410x/flash.c b/board/sbc2410x/flash.c
new file mode 100644
index 0000000..f2718f2
--- /dev/null
+++ b/board/sbc2410x/flash.c
@@ -0,0 +1,431 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.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 <common.h>
+
+ulong myflush (void);
+
+#define FLASH_BANK_SIZE	PHYS_FLASH_SIZE
+#define MAIN_SECT_SIZE  0x10000	/* 64 KB */
+
+flash_info_t flash_info[CFG_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 *)(CFG_FLASH_BASE + (0x00000555 << 1)))
+#define MEM_FLASH_ADDR2		(*(volatile u16 *)(CFG_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 < CFG_MAX_FLASH_BANKS; i++) {
+		ulong flashbase = 0;
+
+		flash_info[i].flash_id =
+#if defined(CONFIG_AMD_LV400)
+			(AMD_MANUFACT & FLASH_VENDMASK) |
+			(AMD_ID_LV400B & FLASH_TYPEMASK);
+#elif defined(CONFIG_AMD_LV800)
+			(AMD_MANUFACT & FLASH_VENDMASK) |
+			(AMD_ID_LV800B & FLASH_TYPEMASK);
+#else
+#error "Unknown flash configured"
+#endif
+			flash_info[i].size = FLASH_BANK_SIZE;
+		flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
+		memset (flash_info[i].protect, 0, CFG_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,
+		       CFG_FLASH_BASE,
+		       CFG_FLASH_BASE + monitor_flash_len - 1,
+		       &flash_info[0]);
+
+	flash_protect (FLAG_PROTECT_SET,
+		       CFG_ENV_ADDR,
+		       CFG_ENV_ADDR + CFG_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 (AMD_MANUFACT & FLASH_VENDMASK):
+		printf ("AMD: ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case (AMD_ID_LV400B & FLASH_TYPEMASK):
+		printf ("1x Amd29LV400BB (4Mbit)\n");
+		break;
+	case (AMD_ID_LV800B & FLASH_TYPEMASK):
+		printf ("1x Amd29LV800BB (8Mbit)\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) !=
+	    (AMD_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 () >
+				    CFG_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
+ */
+
+volatile 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 () > CFG_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
+	 */
+	if ((l = addr - wp) != 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);
+		}
+
+		if ((rc = write_hword (info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 2;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 2) {
+		data = *((vu_short *) src);
+		if ((rc = write_hword (info, wp, data)) != 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/sbc2410x/lowlevel_init.S b/board/sbc2410x/lowlevel_init.S
new file mode 100644
index 0000000..5bfa14a
--- /dev/null
+++ b/board/sbc2410x/lowlevel_init.S
@@ -0,0 +1,163 @@
+/*
+ * Memory Setup stuff - taken from blob memsetup.S
+ *
+ * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) and
+ *                     Jan-Derk Bakker (J.D.Bakker@its.tudelft.nl)
+ *
+ * Modified for the Samsung SMDK2410 by
+ * (C) Copyright 2002
+ * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
+ *
+ * Modified for the friendly-arm SBC-2410X by
+ * (C) Copyright 2005
+ * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.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>
+
+/*
+ * 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	  	(DW16)
+#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)
+
+#define B0_Tacs		 	0x0	
+#define B0_Tcos		 	0x0	
+#define B0_Tacc		 	0x7	
+#define B0_Tcoh		 	0x0	
+#define B0_Tah		 	0x0
+#define B0_Tacp		 	0x0
+#define B0_PMC		 	0x0	
+
+#define B1_Tacs		 	0x0	
+#define B1_Tcos		 	0x0	
+#define B1_Tacc		 	0x7	
+#define B1_Tcoh		 	0x0	
+#define B1_Tah		 	0x0	
+#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		 	0xc
+#define B3_Tcos		 	0x7
+#define B3_Tacc		 	0xf
+#define B3_Tcoh		 	0x1
+#define B3_Tah		 	0x0
+#define B3_Tacp		 	0x0
+#define B3_PMC		 	0x0
+
+#define B4_Tacs		 	0x0
+#define B4_Tcos		 	0x0
+#define B4_Tacc		 	0x7
+#define B4_Tcoh		 	0x0
+#define B4_Tah		 	0x0
+#define B4_Tacp		 	0x0
+#define B4_PMC		 	0x0
+
+#define B5_Tacs		 	0xc
+#define B5_Tcos		 	0x7
+#define B5_Tacc		 	0xf
+#define B5_Tcoh		 	0x1
+#define B5_Tah		 	0x0
+#define B5_Tacp		 	0x0
+#define B5_PMC		 	0x0
+
+#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			0x0459
+/**************************************/
+
+_TEXT_BASE:
+	.word	TEXT_BASE
+
+.globl lowlevel_init
+lowlevel_init:
+	/* 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
+
+	/* 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 0xb2
+    .word 0x30
+    .word 0x30
diff --git a/board/sbc2410x/sbc2410x.c b/board/sbc2410x/sbc2410x.c
new file mode 100644
index 0000000..7030985
--- /dev/null
+++ b/board/sbc2410x/sbc2410x.c
@@ -0,0 +1,183 @@
+/*
+ * (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 2005
+ * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.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 <s3c2410.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+#include <linux/mtd/nand.h>
+#endif
+
+/* ------------------------------------------------------------------------- */
+
+#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	0x5c
+#define M_PDIV	0x4
+#define M_SDIV	0x0
+#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)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
+	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_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 = 0x00044556;
+	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 = 0xFF95FF3A;
+	gpio->GPGUP = 0x0000FFFF;
+	gpio->GPHCON = 0x0016FAAA;
+	gpio->GPHUP = 0x000007FF;
+
+	gpio->EXTINT0=0x22222222;
+	gpio->EXTINT1=0x22222222;
+	gpio->EXTINT2=0x22222222;
+
+	/* arch number of SMDK2410-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_SMDK2410;
+
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = 0x30000100;
+
+	icache_enable();
+	dcache_enable();
+
+	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;
+
+	return 0;
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_NAND)
+extern ulong nand_probe(ulong physadr);
+
+static inline void NF_Reset(void)
+{
+	int i;
+
+	NF_SetCE(NFCE_LOW);
+	NF_Cmd(0xFF);		/* reset command */
+	for(i = 0; i < 10; i++);	/* tWB = 100ns. */
+	NF_WaitRB();		/* wait 200~500us; */
+	NF_SetCE(NFCE_HIGH);
+}
+
+static inline void NF_Init(void)
+{
+#if 1
+#define TACLS   0
+#define TWRPH0  3
+#define TWRPH1  0
+#else
+#define TACLS   0
+#define TWRPH0  4
+#define TWRPH1  2
+#endif
+
+	NF_Conf((1<<15)|(0<<14)|(0<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0));
+	/*nand->NFCONF = (1<<15)|(1<<14)|(1<<13)|(1<<12)|(1<<11)|(TACLS<<8)|(TWRPH0<<4)|(TWRPH1<<0); */
+	/* 1  1    1     1,   1      xxx,  r xxx,   r xxx */
+	/* En 512B 4step ECCR nFCE=H tACLS   tWRPH0   tWRPH1 */
+
+	NF_Reset();
+}
+
+void nand_init(void)
+{
+	S3C2410_NAND * const nand = S3C2410_GetBase_NAND();
+
+	NF_Init();
+#ifdef DEBUG
+	printf("NAND flash probing at 0x%.8lX\n", (ulong)nand);
+#endif
+	printf ("%4lu MB\n", nand_probe((ulong)nand) >> 20);
+}
+#endif /* CONFIG_COMMANDS & CFG_CMD_NAND */
diff --git a/board/sbc2410x/u-boot.lds b/board/sbc2410x/u-boot.lds
new file mode 100644
index 0000000..76df6b2
--- /dev/null
+++ b/board/sbc2410x/u-boot.lds
@@ -0,0 +1,56 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj@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_FORMAT("elf32-arm", "elf32-arm", "elf32-arm")*/
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+	. = 0x00000000;
+
+	. = ALIGN(4);
+	.text      :
+	{
+	  cpu/arm920t/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 = .;
+}