Patch by Reinhard Meyer, 28 Dec 2003:

Add initial support for TOP5200 board

5 files changed, 905 insertions, 0 deletions

diff --git a/board/emk/top5200/Makefile b/board/emk/top5200/Makefile
new file mode 100644
index 0000000..eb5ed59
--- /dev/null
+++ b/board/emk/top5200/Makefile
@@ -0,0 +1,47 @@
+
+#
+# (C) Copyright 2003
+# 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	:= $(BOARD).o flash.o
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) crv $@ $(OBJS)
+
+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) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/emk/top5200/config.mk b/board/emk/top5200/config.mk
new file mode 100644
index 0000000..14af97a
--- /dev/null
+++ b/board/emk/top5200/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2003
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# TOP5200 board, on optional MINI5200 and EVAL5200 boards
+#
+
+TEXT_BASE = 0xfff00000
+#TEXT_BASE = 0x00100000
+
+PLATFORM_CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) -I$(TOPDIR)/board
diff --git a/board/emk/top5200/flash.c b/board/emk/top5200/flash.c
new file mode 100644
index 0000000..b951b5f
--- /dev/null
+++ b/board/emk/top5200/flash.c
@@ -0,0 +1,489 @@
+/*
+ * (C) Copyright 2003
+ * 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 <common.h>
+
+flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+
+typedef unsigned char FLASH_PORT_WIDTH;
+typedef volatile unsigned char FLASH_PORT_WIDTHV;
+#define	FLASH_ID_MASK	0xFF
+
+#define FPW	FLASH_PORT_WIDTH
+#define FPWV	FLASH_PORT_WIDTHV
+
+#define FLASH_CYCLE1	0x0aaa
+#define FLASH_CYCLE2	0x0555
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size(FPWV *addr, flash_info_t *info);
+static void flash_reset(flash_info_t *info);
+static int write_word_amd(flash_info_t *info, FPWV *dest, FPW data);
+static flash_info_t *flash_get_info(ulong base);
+
+/*-----------------------------------------------------------------------
+ * flash_init()
+ *
+ * sets up flash_info and returns size of FLASH (bytes)
+ */
+unsigned long flash_init (void)
+{
+	unsigned long size = 0;
+	int i;
+	extern void flash_preinit(void);
+	extern void flash_afterinit(uint, ulong, ulong);
+	ulong flashbase = CFG_FLASH_BASE;
+
+	flash_preinit();
+
+	/* There is only ONE FLASH device */
+	memset(&flash_info[0], 0, sizeof(flash_info_t));
+	flash_info[0].size =
+			flash_get_size((FPW *)flashbase, &flash_info[0]);
+	size += flash_info[0].size;
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	/* monitor protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_MONITOR_BASE,
+		      CFG_MONITOR_BASE+monitor_flash_len-1,
+		      flash_get_info(CFG_MONITOR_BASE));
+#endif
+
+#ifdef	CFG_ENV_IS_IN_FLASH
+	/* ENV protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_ENV_ADDR,
+		      CFG_ENV_ADDR+CFG_ENV_SIZE-1,
+		      flash_get_info(CFG_ENV_ADDR));
+#endif
+
+
+	flash_afterinit(0, flash_info[0].start[0], flash_info[0].size);
+	return size ? size : 1;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_reset(flash_info_t *info)
+{
+	FPWV *base = (FPWV *)(info->start[0]);
+
+	/* Put FLASH back in read mode */
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
+		*base = (FPW)0x00FF00FF;	/* Intel Read Mode */
+	else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD)
+		*base = (FPW)0x00F000F0;	/* AMD Read Mode */
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+static flash_info_t *flash_get_info(ulong base)
+{
+	int i;
+	flash_info_t * info;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
+		info = & flash_info[i];
+		if (info->size &&
+			info->start[0] <= base && base <= info->start[0] + info->size - 1)
+			break;
+	}
+
+	return i == CFG_MAX_FLASH_BANKS ? 0 : info;
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+void flash_print_info (flash_info_t *info)
+{
+	int i;
+	uchar *boottype;
+	uchar *bootletter;
+	uchar *fmt;
+	uchar botbootletter[] = "B";
+	uchar topbootletter[] = "T";
+	uchar botboottype[] = "bottom boot sector";
+	uchar topboottype[] = "top boot sector";
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf ("missing or unknown FLASH type\n");
+		return;
+	}
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_AMD:	printf ("AMD ");		break;
+#if 0
+	case FLASH_MAN_BM:	printf ("BRIGHT MICRO ");	break;
+	case FLASH_MAN_FUJ:	printf ("FUJITSU ");		break;
+	case FLASH_MAN_SST:	printf ("SST ");		break;
+	case FLASH_MAN_STM:	printf ("STM ");		break;
+	case FLASH_MAN_INTEL:	printf ("INTEL ");		break;
+#endif
+	default:		printf ("Unknown Vendor ");	break;
+	}
+
+	/* check for top or bottom boot, if it applies */
+	if (info->flash_id & FLASH_BTYPE) {
+		boottype = botboottype;
+		bootletter = botbootletter;
+	} else {
+		boottype = topboottype;
+		bootletter = topbootletter;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM160T:
+	case FLASH_AM160B:
+		fmt = "29LV160%s (16 Mbit, %s)\n";
+		break;
+	case FLASH_AMDLV065D:
+		fmt = "29LV065 (64 Mbit, uniform sectors)\n";
+		break;
+	default:
+		fmt = "Unknown Chip Type\n";
+		break;
+	}
+
+	printf (fmt, bootletter, boottype);
+
+	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");
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+
+ulong flash_get_size (FPWV *addr, flash_info_t *info)
+{
+	int		i;
+	ulong	offset;
+
+	/* Write auto select command: read Manufacturer ID */
+	/* Write auto select command sequence and test FLASH answer */
+	addr[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* for AMD, Intel ignores this */
+	addr[FLASH_CYCLE2] = (FPW)0x00550055;	/* for AMD, Intel ignores this */
+	addr[FLASH_CYCLE1] = (FPW)0x00900090;	/* selects Intel or AMD */
+
+	/* The manufacturer codes are only 1 byte, so just use 1 byte.
+	 * This works for any bus width and any FLASH device width.
+	 */
+	udelay(100);
+	switch (addr[0] & 0xff) {
+
+	case (uchar)AMD_MANUFACT:
+		info->flash_id = FLASH_MAN_AMD;
+		break;
+
+#if 0
+	case (uchar)INTEL_MANUFACT:
+		info->flash_id = FLASH_MAN_INTEL;
+		break;
+#endif
+
+	default:
+		printf ("unknown vendor=%x ", addr[0] & 0xff);
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		break;
+	}
+
+	/* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
+	if (info->flash_id != FLASH_UNKNOWN) switch ((FPW)addr[2]) {
+
+	case (FPW)AMD_ID_LV160B:
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00200000;
+		offset = 0x00e00000;
+		info->start[0] = (ulong)addr + offset;
+		info->start[1] = (ulong)addr + offset + 0x4000;
+		info->start[2] = (ulong)addr + offset + 0x6000;
+		info->start[3] = (ulong)addr + offset + 0x8000;
+		for (i = 4; i < info->sector_count; i++) {
+			info->start[i] = (ulong)addr + offset + 0x10000 * (i-3);
+		}
+		break;
+
+	case (FPW)AMD_ID_LV065D:
+		info->flash_id += FLASH_AMDLV065D;
+		info->sector_count = 128;
+		info->size = 0x00800000;
+		offset = 0x00800000;
+		for (i = 0; i < info->sector_count; i++)
+			info->start[i] = (ulong)addr + offset + (i * 0x10000);
+		break;				/* => 8 or 16 MB	*/
+
+	default:
+		printf ("unknown AMD device=%x ", (FPW)addr[2]);
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);			/* => no or unknown flash */
+	}
+
+	/* Put FLASH back in read mode */
+	flash_reset(info);
+
+	return (info->size);
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	FPWV *addr;
+	int flag, prot, sect;
+	int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
+	ulong start, now, last;
+	int rcode = 0;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		if (info->flash_id == FLASH_UNKNOWN) {
+			printf ("- missing\n");
+		} else {
+			printf ("- no sectors to erase\n");
+		}
+		return 1;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AMDLV065D:
+		break;
+	case FLASH_UNKNOWN:
+	default:
+		printf ("Can't erase unknown flash type %08lx - aborted\n",
+			info->flash_id);
+		return 1;
+	}
+
+	prot = 0;
+	for (sect=s_first; sect<=s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+
+	if (prot) {
+		printf ("- Warning: %d protected sectors will not be erased!\n",
+			prot);
+	} else {
+		printf ("\n");
+	}
+
+	last  = get_timer(0);
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last && rcode == 0; sect++) {
+
+		if (info->protect[sect] != 0)	/* protected, skip it */
+			continue;
+
+		/* Disable interrupts which might cause a timeout here */
+		flag = disable_interrupts();
+
+		addr = (FPWV *)(info->start[sect]);
+		if (intel) {
+			*addr = (FPW)0x00500050; /* clear status register */
+			*addr = (FPW)0x00200020; /* erase setup */
+			*addr = (FPW)0x00D000D0; /* erase confirm */
+		}
+		else {
+			/* must be AMD style if not Intel */
+			FPWV *base;		/* first address in bank */
+
+			base = (FPWV *)(info->start[0]);
+			base[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* unlock */
+			base[FLASH_CYCLE2] = (FPW)0x00550055;	/* unlock */
+			base[FLASH_CYCLE1] = (FPW)0x00800080;	/* erase mode */
+			base[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* unlock */
+			base[FLASH_CYCLE2] = (FPW)0x00550055;	/* unlock */
+			*addr = (FPW)0x00300030;	/* erase sector */
+		}
+
+		/* re-enable interrupts if necessary */
+		if (flag)
+			enable_interrupts();
+
+		start = get_timer(0);
+
+		/* wait at least 50us for AMD, 80us for Intel.
+		 * Let's wait 1 ms.
+		 */
+		udelay (1000);
+
+		while ((*addr & (FPW)0x00800080) != (FPW)0x00800080) {
+			if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+				printf ("Timeout\n");
+
+				if (intel) {
+					/* suspend erase	*/
+					*addr = (FPW)0x00B000B0;
+				}
+
+				flash_reset(info);	/* reset to read mode */
+				rcode = 1;		/* failed */
+				break;
+			}
+
+			/* show that we're waiting */
+			if ((get_timer(last)) > CFG_HZ) {/* every second */
+				putc ('.');
+				last = get_timer(0);
+			}
+		}
+
+		/* show that we're waiting */
+		if ((get_timer(last)) > CFG_HZ) {	/* every second */
+			putc ('.');
+			last = get_timer(0);
+		}
+
+		flash_reset(info);	/* reset to read mode	*/
+	}
+
+	printf (" done\n");
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+	FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
+	int bytes;	  /* number of bytes to program in current word		*/
+	int left;	  /* number of bytes left to program			*/
+	int i, res;
+
+	for (left = cnt, res = 0;
+		 left > 0 && res == 0;
+		 addr += sizeof(data), left -= sizeof(data) - bytes) {
+
+		bytes = addr & (sizeof(data) - 1);
+		addr &= ~(sizeof(data) - 1);
+
+		/* combine source and destination data so can program
+		 * an entire word of 16 or 32 bits
+		 */
+		for (i = 0; i < sizeof(data); i++) {
+			data <<= 8;
+			if (i < bytes || i - bytes >= left )
+				data += *((uchar *)addr + i);
+			else
+				data += *src++;
+		}
+
+		/* write one word to the flash */
+		switch (info->flash_id & FLASH_VENDMASK) {
+		case FLASH_MAN_AMD:
+			res = write_word_amd(info, (FPWV *)addr, data);
+			break;
+		default:
+			/* unknown flash type, error! */
+			printf ("missing or unknown FLASH type\n");
+			res = 1;	/* not really a timeout, but gives error */
+			break;
+		}
+	}
+
+	return (res);
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash for AMD FLASH
+ * A word is 16 or 32 bits, whichever the bus width of the flash bank
+ * (not an individual chip) is.
+ *
+ * returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_word_amd (flash_info_t *info, FPWV *dest, FPW data)
+{
+	ulong start;
+	int flag;
+	int res = 0;	/* result, assume success	*/
+	FPWV *base;		/* first address in flash bank	*/
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*dest & data) != data) {
+		return (2);
+	}
+
+
+	base = (FPWV *)(info->start[0]);
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	base[FLASH_CYCLE1] = (FPW)0x00AA00AA;	/* unlock */
+	base[FLASH_CYCLE2] = (FPW)0x00550055;	/* unlock */
+	base[FLASH_CYCLE1] = (FPW)0x00A000A0;	/* selects program mode */
+
+	*dest = data;		/* start programming the data	*/
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	start = get_timer (0);
+
+	/* data polling for D7 */
+	while (res == 0 && (*dest & (FPW)0x00800080) != (data & (FPW)0x00800080)) {
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			*dest = (FPW)0x00F000F0;	/* reset bank */
+			res = 1;
+		}
+	}
+
+	return (res);
+}
diff --git a/board/emk/top5200/top5200.c b/board/emk/top5200/top5200.c
new file mode 100644
index 0000000..536a515
--- /dev/null
+++ b/board/emk/top5200/top5200.c
@@ -0,0 +1,216 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2003
+ * Reinhard Meyer, EMK Elektronik GmbH, r.meyer@emk-elektronik.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>
+#include <mpc5xxx.h>
+#include <pci.h>
+
+/*****************************************************************************
+ * initialize SDRAM/DDRAM controller.
+ * TBD: get data from I2C EEPROM
+ *****************************************************************************/
+long int initdram (int board_type)
+{
+	ulong dramsize = 0;
+#ifndef CFG_RAMBOOT
+	ulong	t;
+	ulong	tap_del;
+
+	#define	MODE_EN		0x80000000
+	#define	SOFT_PRE	2
+	#define	SOFT_REF	4
+
+	/* configure SDRAM start/end */
+	*(vu_long *)MPC5XXX_SDRAM_CS0CFG = (CFG_SDRAM_BASE & 0xFFF00000) | CFG_DRAM_RAM_SIZE;
+	*(vu_long *)MPC5XXX_SDRAM_CS1CFG = 0x80000000;	/* disabled */
+
+	/* setup config registers */
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG1 = CFG_DRAM_CONFIG1;
+	*(vu_long *)MPC5XXX_SDRAM_CONFIG2 = CFG_DRAM_CONFIG2;
+
+	/* unlock mode register */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = CFG_DRAM_CONTROL | MODE_EN;
+	/* precharge all banks */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = CFG_DRAM_CONTROL | MODE_EN | SOFT_PRE;
+#if CFG_DRAM_DDR
+	/* set extended mode register */
+	*(vu_short *)MPC5XXX_SDRAM_MODE = CFG_DRAM_EMODE;
+#endif
+	/* set mode register */
+	*(vu_short *)MPC5XXX_SDRAM_MODE = CFG_DRAM_MODE | 0x0400;
+	/* precharge all banks */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = CFG_DRAM_CONTROL | MODE_EN | SOFT_PRE;
+	/* auto refresh */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = CFG_DRAM_CONTROL | MODE_EN | SOFT_REF;
+	/* set mode register */
+	*(vu_short *)MPC5XXX_SDRAM_MODE = CFG_DRAM_MODE;
+	/* normal operation */
+	*(vu_long *)MPC5XXX_SDRAM_CTRL = CFG_DRAM_CONTROL;
+	/* write default TAP delay */
+	*(vu_long *)MPC5XXX_CDM_PORCFG = CFG_DRAM_TAP_DEL << 24;
+
+#if 0
+	for (tap_del = 0; tap_del < 32; tap_del++) {
+		*(vu_long *)MPC5XXX_CDM_PORCFG = tap_del << 24;
+
+		printf ("\nTAP Delay:%x Filling DRAM...", *(vu_long *)MPC5XXX_CDM_PORCFG);
+		for (t = 0; t < 0x04000000; t+=4)
+			*(vu_long *) t = t;
+		printf ("Checking DRAM...\n");
+		for (t = 0; t < 0x04000000; t+=4) {
+			ulong	rval = *(vu_long *) t;
+			if (rval != t) {
+				printf ("mismatch at %x: ", t);
+				printf (" 1.read %x", rval);
+				printf (" 2.read %x", *(vu_long *) t);
+				printf (" 3.read %x", *(vu_long *) t);
+				break;
+			}
+		}
+	}
+#endif
+#endif /* CFG_RAMBOOT */
+
+	dramsize = ((1 << (*(vu_long *)MPC5XXX_SDRAM_CS0CFG - 0x13)) << 20);
+
+	/* return total ram size */
+	return dramsize;
+}
+
+/*****************************************************************************
+ * print board identification
+ *****************************************************************************/
+int checkboard (void)
+{
+#if defined (CONFIG_EVAL5200)
+	puts ("Board: EMK TOP5200 on EVAL5200\n");
+#else
+#if defined (CONFIG_MINI5200)
+	puts ("Board: EMK TOP5200 on MINI5200\n");
+#else
+	puts ("Board: EMK TOP5200\n");
+#endif
+#endif
+	return 0;
+}
+
+/*****************************************************************************
+ * prepare for FLASH detection
+ *****************************************************************************/
+void flash_preinit(void)
+{
+	/*
+	 * Now, when we are in RAM, enable flash write
+	 * access for detection process.
+	 * Note that CS_BOOT cannot be cleared when
+	 * executing in flash.
+	 */
+	*(vu_long *)MPC5XXX_BOOTCS_CFG &= ~0x1; /* clear RO */
+}
+
+/*****************************************************************************
+ * finalize FLASH setup
+ *****************************************************************************/
+void flash_afterinit(uint bank, ulong start, ulong size)
+{
+	if (bank == 0) { /* adjust mapping */
+		*(vu_long *)MPC5XXX_BOOTCS_START =
+		*(vu_long *)MPC5XXX_CS0_START =	START_REG(start);
+		*(vu_long *)MPC5XXX_BOOTCS_STOP =
+		*(vu_long *)MPC5XXX_CS0_STOP = STOP_REG(start, size);
+	}
+}
+
+/*****************************************************************************
+ * otherinits after RAM is there and we are relocated to RAM
+ * note: though this is an int function, nobody cares for the result!
+ *****************************************************************************/
+int misc_init_r (void)
+{
+	/* read 'factory' part of EEPROM */
+	uchar buf[81];
+	uchar *p;
+	uint length;
+	uint addr;
+	uint len;
+
+	/* get length first */
+	addr = CFG_FACT_OFFSET;
+	if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, 2)) {
+bailout:
+		printf ("cannot read factory configuration\n");
+		printf ("be sure to set ethaddr	yourself!\n");
+		return 0;
+	}
+	length = buf[0] + (buf[1] << 8);
+	addr += 2;
+
+	/* sanity check */
+	if (length < 20 || length > CFG_FACT_SIZE - 2)
+		goto bailout;
+
+	/* read lines */
+	while (length > 0) {
+		/* read one line */
+		len = length > 80 ? 80 : length;
+		if (eeprom_read (CFG_I2C_FACT_ADDR, addr, buf, len))
+			goto bailout;
+		/* mark end of buffer */
+		buf[len] = 0;
+		/* search end of line */
+		for (p = buf; *p && *p != 0x0a; p++);
+		if (!*p)
+			goto bailout;
+		*p++ = 0;
+		/* advance to next line start */
+		length -= p - buf;
+		addr += p - buf;
+		/*printf ("%s\n", buf); */
+		/* search for our specific entry */
+		if (!strncmp ((char *) buf, "[RLA/lan/Ethernet] ", 19)) {
+			setenv ("ethaddr", buf + 19);
+		} else if (!strncmp ((char *) buf, "[BOARD/SERIAL] ", 15)) {
+			setenv ("serial#", buf + 15);
+		} else if (!strncmp ((char *) buf, "[BOARD/TYPE] ", 13)) {
+			setenv ("board_id", buf + 13);
+		}
+	}
+	return (0);
+}
+
+/*****************************************************************************
+ * initialize the PCI system
+ *****************************************************************************/
+#ifdef	CONFIG_PCI
+static struct pci_controller hose;
+
+extern void pci_mpc5xxx_init(struct pci_controller *);
+
+void pci_init_board(void)
+{
+	pci_mpc5xxx_init(&hose);
+}
+#endif
diff --git a/board/emk/top5200/u-boot.lds b/board/emk/top5200/u-boot.lds
new file mode 100644
index 0000000..d999dd1
--- /dev/null
+++ b/board/emk/top5200/u-boot.lds
@@ -0,0 +1,122 @@
+/*
+ * (C) Copyright 2003
+ * 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_ARCH(powerpc)
+SEARCH_DIR(/lib); SEARCH_DIR(/usr/lib); SEARCH_DIR(/usr/local/lib); SEARCH_DIR(/usr/local/powerpc-any-elf/lib);
+/* Do we need any of these for elf?
+   __DYNAMIC = 0;    */
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  . = + SIZEOF_HEADERS;
+  .interp : { *(.interp) }
+  .hash          : { *(.hash)		}
+  .dynsym        : { *(.dynsym)		}
+  .dynstr        : { *(.dynstr)		}
+  .rel.text      : { *(.rel.text)		}
+  .rela.text     : { *(.rela.text) 	}
+  .rel.data      : { *(.rel.data)		}
+  .rela.data     : { *(.rela.data) 	}
+  .rel.rodata    : { *(.rel.rodata) 	}
+  .rela.rodata   : { *(.rela.rodata) 	}
+  .rel.got       : { *(.rel.got)		}
+  .rela.got      : { *(.rela.got)		}
+  .rel.ctors     : { *(.rel.ctors)	}
+  .rela.ctors    : { *(.rela.ctors)	}
+  .rel.dtors     : { *(.rel.dtors)	}
+  .rela.dtors    : { *(.rela.dtors)	}
+  .rel.bss       : { *(.rel.bss)		}
+  .rela.bss      : { *(.rela.bss)		}
+  .rel.plt       : { *(.rel.plt)		}
+  .rela.plt      : { *(.rela.plt)		}
+  .init          : { *(.init)	}
+  .plt : { *(.plt) }
+  .text      :
+  {
+    cpu/mpc5xxx/start.o	(.text)
+    *(.text)
+    *(.fixup)
+    *(.got1)
+    . = ALIGN(16);
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x0FFF) & 0xFFFFF000;
+  _erotext = .;
+  PROVIDE (erotext = .);
+  .reloc   :
+  {
+    *(.got)
+    _GOT2_TABLE_ = .;
+    *(.got2)
+    _FIXUP_TABLE_ = .;
+    *(.fixup)
+  }
+  __got2_entries = (_FIXUP_TABLE_ - _GOT2_TABLE_) >> 2;
+  __fixup_entries = (. - _FIXUP_TABLE_) >> 2;
+
+  .data    :
+  {
+    *(.data)
+    *(.data1)
+    *(.sdata)
+    *(.sdata2)
+    *(.dynamic)
+    CONSTRUCTORS
+  }
+  _edata  =  .;
+  PROVIDE (edata = .);
+
+  __u_boot_cmd_start = .;
+  .u_boot_cmd : { *(.u_boot_cmd) }
+  __u_boot_cmd_end = .;
+
+
+  __start___ex_table = .;
+  __ex_table : { *(__ex_table) }
+  __stop___ex_table = .;
+
+  . = ALIGN(4096);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(4096);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}