* Patch by Thomas Elste, 10 Feb 2004:

  Add support for NET+50 CPU and ModNET50 board

* Patch by Sam Song, 10 Feb 2004:
  Fix typos in cfi_flash.c

* Patch by Leon Kukovec, 10 Feb 2004
  Fixed long dir entry slot id calculation in get_vfatname

* Patch by Robin Gilks, 10 Feb 2004:
  add "itest" command (operators: -eq, -ne, -lt, -gt, -le, -ge, ==,
  !=, <>, <, >, <=, >=)

6 files changed, 936 insertions, 0 deletions

diff --git a/board/modnet50/Makefile b/board/modnet50/Makefile
new file mode 100644
index 0000000000..7dbcc1c937
--- /dev/null
+++ b/board/modnet50/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	:= modnet50.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/modnet50/config.mk b/board/modnet50/config.mk
new file mode 100644
index 0000000000..49d4836c0a
--- /dev/null
+++ b/board/modnet50/config.mk
@@ -0,0 +1,29 @@
+#
+# (C) Copyright 2000
+# Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+# Marius Groeger <mgroeger@sysgo.de>
+#
+# (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 = 0x00f00000
+#CROSS_COMPILE = arm-elf-
diff --git a/board/modnet50/flash.c b/board/modnet50/flash.c
new file mode 100644
index 0000000000..fc04d9124e
--- /dev/null
+++ b/board/modnet50/flash.c
@@ -0,0 +1,536 @@
+/*
+ * (C) Copyright 2002
+ * MAZeT GmbH <www.mazet.de>
+ * Stephan Linz <linz@mazet.de>, <linz@li-pro.net>
+ *
+ * The most stuff comes from PPCBoot and Linux.
+ *
+ * IMMS gGmbH <www.imms.de>
+ * Thomas Elste <info@elste.org>
+ *
+ * Modifications for ModNET50 Board
+ *
+ * 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/arch/netarm_registers.h>
+
+#define SCR   (*(volatile unsigned int *)(NETARM_GEN_MODULE_BASE + NETARM_GEN_SYSTEM_CONTROL))
+
+#define ALIGN_ABORT_OFF		SCR = SCR & ~NETARM_GEN_SYS_CFG_ALIGN_ABORT
+#define ALIGN_ABORT_ON		SCR = SCR |  NETARM_GEN_SYS_CFG_ALIGN_ABORT
+
+#define PROG_ADDR		(0x555*2)
+#define SETUP_ADDR		(0x555*2)
+#define ID_ADDR			(0x555*2)
+#define UNLOCK_ADDR1		(0x555*2)
+#define UNLOCK_ADDR2		(0x2AA*2)
+
+#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 SECERASE_CMD		(0x30)
+#define CHIPERASE_CMD		(0x10)
+#define PROG_CMD		(0xa0)
+#define SETUP_CMD		(0x80)
+
+#define DQ2			(0x04)
+#define DQ3			(DQ2*2)
+#define DQ5			(DQ3*4)
+#define DQ6			(DQ5*2)
+
+#define WRITE_UNLOCK(addr) { \
+  *(volatile __u16*)(addr + UNLOCK_ADDR1) = (__u16)UNLOCK_CMD1; \
+  *(volatile __u16*)(addr + UNLOCK_ADDR2) = (__u16)UNLOCK_CMD2; \
+}
+
+#define CONFIG_AM29_RESERVED	(0)
+#define K			(1024)
+#define MB			(4)
+
+#define CELL_SIZE		(64*K)
+#define DEVICE_SIZE		(MB*K*K)
+#define CELLS_PER_DEVICE	(DEVICE_SIZE/CELL_SIZE)
+#define RESERVED_CELLS		(CONFIG_AM29_RESERVED*K)/CELL_SIZE
+#define MAX_FLASH_DEVICES	(1)
+#define AVAIL_SIZE		(DEVICE_SIZE*MAX_FLASH_DEVICES - RESERVED_CELLS*CELL_SIZE)
+
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
+static __u16 toggling_bits;
+
+
+/*-----------------------------------------------------------------------
+ */
+ulong flash_get_size (ulong baseaddr, flash_info_t * info)
+{
+	short i;
+	__u16 flashtest;
+
+	/* Write auto select command sequence and test FLASH answer */
+	WRITE_UNLOCK (baseaddr);
+	*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) ID_CMD;
+	flashtest /* manufacturer ID */  = *(volatile __u16 *) (baseaddr);
+	*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) RESET_CMD;
+
+	switch ((__u32) ((flashtest << 16) + flashtest)) {
+	case AMD_MANUFACT:
+		info->flash_id = FLASH_MAN_AMD & FLASH_VENDMASK;
+		break;
+	case FUJ_MANUFACT:
+		info->flash_id = FLASH_MAN_FUJ & FLASH_VENDMASK;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);	/* no or unknown flash */
+	}
+
+	/* Write auto select command sequence and test FLASH answer */
+	WRITE_UNLOCK (baseaddr);
+	*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) ID_CMD;
+	flashtest /* device ID */  = *(volatile __u16 *) (baseaddr + 2);
+	*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) RESET_CMD;
+
+	/* toggling_bits = (flashtest == TOSHIBA)?(DQ6):(DQ2|DQ6); */
+	toggling_bits = (DQ2 | DQ6);
+
+	switch ((__u32) ((flashtest << 16) + flashtest)) {
+	case AMD_ID_LV160B:
+		info->flash_id +=
+			(FLASH_AM160LV | FLASH_AM160B) & FLASH_TYPEMASK;
+		info->sector_count = CFG_MAX_FLASH_SECT;
+		info->size = CFG_FLASH_SIZE;
+		/* 1*16K Boot Block
+		   2*8K Parameter Block
+		   1*32K Small Main Block */
+		info->start[0] = baseaddr;
+		info->start[1] = baseaddr + 0x4000;
+		info->start[2] = baseaddr + 0x6000;
+		info->start[3] = baseaddr + 0x8000;
+		for (i = 1; i < info->sector_count; i++)
+			info->start[3 + i] = baseaddr + i * CFG_MAIN_SECT_SIZE;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);	/* no or unknown flash */
+	}
+
+	for (i = 0; i < info->sector_count; i++) {
+		/* Write auto select command sequence and test FLASH answer */
+		WRITE_UNLOCK (info->start[i]);
+		*(volatile __u16 *) (info->start[i] + ID_ADDR) = (__u16) ID_CMD;
+		flashtest /* protected verify */  = *(volatile __u16 *) (info->start[i] + 4);
+		*(volatile __u16 *) (info->start[i] + ID_ADDR) = (__u16) RESET_CMD;
+		if (flashtest & 0x0001) {
+			info->protect[i] = 1;	/* D0 = 1 if protected */
+		} else {
+			info->protect[i] = 0;
+		}
+	}
+	return (info->size);
+}
+
+/*-----------------------------------------------------------------------
+ */
+ulong flash_init (void)
+{
+	ulong size = 0;
+	int i;
+
+	/* Init: no FLASHes known */
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+	}
+
+	/* Static FLASH Bank configuration here (only one bank) */
+	size = flash_get_size (CFG_FLASH_BASE, &flash_info[0]);
+
+	if (flash_info[0].flash_id == FLASH_UNKNOWN || size == 0) {
+		printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
+			size, size >> 20);
+	}
+
+	/*
+	 * protect monitor and environment sectors
+	 */
+	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;
+
+	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;
+	case FLASH_MAN_FUJ:
+		printf ("Fujitsu ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AMDL323B:
+		printf ("29DL323B (32 M, bottom sector)\n");
+		break;
+	case (FLASH_AM160LV | FLASH_AM160B):
+		printf ("29LV160BE (1M x 16, bottom sector)\n");
+		break;
+	default:
+		printf ("Unknown Chip Type\n");
+		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 % 4) == 0)
+			printf ("\n   ");
+		printf (" S%02d @ 0x%08lX%s", i,
+			info->start[i], info->protect[i] ? " !" : "  ");
+	}
+	printf ("\n");
+	return;
+}
+
+/*-----------------------------------------------------------------------
+ */
+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])
+			prot++;
+	if (prot)
+		printf ("- can't erase %d protected sectors\n", prot);
+	return prot;
+}
+
+/*-----------------------------------------------------------------------
+ */
+int flash_check_erase_amd (ulong start)
+{
+	__u16 v1, v2;
+
+	v1 = *(volatile __u16 *) (start);
+	v2 = *(volatile __u16 *) (start);
+
+	if (((v1 ^ v2) & toggling_bits) == toggling_bits) {
+		if (((v1 | v2) & DQ5) == DQ5) {
+			printf ("[DQ5] ");
+			/* OOPS: exceeded timing limits */
+
+			v1 = *(volatile __u16 *) (start);
+			v2 = *(volatile __u16 *) (start);
+
+			if (((v1 ^ v2) & toggling_bits) == toggling_bits) {
+
+				printf ("[%s] ",
+					((toggling_bits & (DQ2 | DQ6)) ==
+					 (DQ2 | DQ6)) ? "DQ2,DQ6" : "DQ6");
+
+				/* OOPS: there is an erasure in progress,
+				 *       try to reset chip */
+				*(volatile __u16 *) (start) =
+					(__u16) RESET_CMD;
+
+				return 1;	/* still busy */
+			}
+		}
+		return 1;	/* still busy */
+	}
+	return 0;		/* be free */
+}
+
+/*-----------------------------------------------------------------------
+ */
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	int flag, sect, setup_offset = 0;
+	int rc = ERR_OK;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		printf ("- missing\n");
+		return ERR_UNKNOWN_FLASH_TYPE;
+	}
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		printf ("- no sectors to erase\n");
+		return ERR_INVAL;
+	}
+
+	if (flash_check_protection (info, s_first, s_last))
+		return ERR_PROTECTED;
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_FUJ:
+	case FLASH_MAN_AMD:
+		switch (info->flash_id & FLASH_TYPEMASK) {
+		case (FLASH_AM160LV | FLASH_AM160B):
+			setup_offset = UNLOCK_ADDR1;	/* just the adress for setup_cmd differs */
+		case FLASH_AMDL323B:
+			/* 
+			 * 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.
+			 */
+			flag = disable_interrupts ();
+			/* Start erase on unprotected sectors */
+			for (sect = s_first; sect <= s_last && !ctrlc ();
+			     sect++) {
+				printf ("Erasing sector %2d ... ", sect);
+
+				if (info->protect[sect] == 0) {
+					/* not protected */
+					/* Write sector erase command sequence */
+					WRITE_UNLOCK (info->start[0]);
+					*(volatile __u16 *) (info->start[0] +
+							     setup_offset) =
+						(__u16) SETUP_CMD;
+					WRITE_UNLOCK (info->start[0]);
+					*(volatile __u16 *) (info->
+							     start[sect]) =
+						(__u16) SECERASE_CMD;
+
+					/* wait some time */
+					reset_timer_masked ();
+					while (get_timer_masked () < 1000) {
+					}
+
+					/* arm simple, non interrupt dependent timer */
+					reset_timer_masked ();
+					while (flash_check_erase_amd (info->start[sect])) {
+						if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+							printf ("timeout!\n");
+							/* OOPS: reach timeout,
+							 * try to reset chip
+							 */
+							*(volatile __u16 *) (info-> start[sect]) = (__u16) RESET_CMD;
+							rc = ERR_TIMOUT;
+							goto outahere_323B;
+						}
+					}
+					printf ("ok.\n");
+				} else {
+					printf ("protected!\n");
+				}
+			}
+			if (ctrlc ())
+				printf ("User Interrupt!\n");
+outahere_323B:
+			/* allow flash to settle - wait 10 ms */
+			udelay_masked (10000);
+			if (flag)
+				enable_interrupts ();
+			return rc;
+		default:
+			printf ("- unknown chip type\n");
+			return ERR_UNKNOWN_FLASH_TYPE;
+		}
+		break;
+	default:
+		printf ("- unknown vendor ");
+		return ERR_UNKNOWN_FLASH_VENDOR;
+	}
+}
+
+/*-----------------------------------------------------------------------
+ */
+int flash_check_write_amd (ulong dest)
+{
+	__u16 v1, v2;
+
+	v1 = *(volatile __u16 *) (dest);
+	v2 = *(volatile __u16 *) (dest);
+
+	/* DQ6 toggles during write */
+	if (((v1 ^ v2) & DQ6) == DQ6) {
+		if (((v1 | v2) & DQ5) == DQ5) {
+			printf ("[DQ5] @ %08lX\n", dest);
+
+			/* OOPS: exceeded timing limits,
+			 *       try to reset chip */
+			*(volatile __u16 *) (dest) = (__u16) RESET_CMD;
+			return 0;	/* be free */
+		}
+		return 1;	/* still busy */
+	}
+
+	return 0;		/* be free */
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+static int write_word (flash_info_t * info, ulong dest, ushort data)
+{
+	int rc = ERR_OK;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*(__u16 *) (dest) & 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.
+	 */
+	flag = disable_interrupts ();
+
+	/* Write program command sequence */
+	WRITE_UNLOCK (info->start[0]);
+
+	/* Flash dependend program seqence */
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case FLASH_MAN_FUJ:
+	case FLASH_MAN_AMD:
+		switch (info->flash_id & FLASH_TYPEMASK) {
+		case (FLASH_AM160LV | FLASH_AM160B):
+			*(volatile __u16 *) (info->start[0] + UNLOCK_ADDR1) =
+				(__u16) PROG_CMD;
+			*(volatile __u16 *) (dest) = (__u16) data;
+			break;
+		case FLASH_AMDL323B:
+			*(volatile __u16 *) (dest) = (__u16) PROG_CMD;
+			*(volatile __u16 *) (dest) = (__u16) data;
+			break;
+		}
+	}
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked ();
+
+	while (flash_check_write_amd (dest)) {
+		if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
+			printf ("timeout! @ %08lX\n", dest);
+			/* OOPS: reach timeout,
+			 *       try to reset chip */
+			*(volatile __u16 *) (dest) = (__u16) RESET_CMD;
+
+			rc = ERR_TIMOUT;
+			goto outahere_323B;
+		}
+	}
+
+	/* Check if Flash was (accurately) written */
+	if (*(__u16 *) (dest) != data)
+		rc = ERR_PROG_ERROR;
+
+outahere_323B:
+	if (flag)
+		enable_interrupts ();
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	ulong cp, wp;
+	ushort data;
+	int l;
+	int i, rc;
+
+	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_word (info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 2;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 2) {
+		data = *((ushort *) src);
+		if ((rc = write_word (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_word (info, wp, data);
+}
diff --git a/board/modnet50/memsetup.S b/board/modnet50/memsetup.S
new file mode 100644
index 0000000000..674b1d2e05
--- /dev/null
+++ b/board/modnet50/memsetup.S
@@ -0,0 +1,204 @@
+/*
+ * Memory Setup stuff - taken from Linux
+ *
+ * Copyright (c) 2002	Stephan Linz <linz@mazet.de>, <linz@li-pro.net>
+ * (c) 2004 IMMS gGmbH <www.imms.de>, Thomas Elste <info@elste.org>
+ *
+ * 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/arch/netarm_registers.h>
+
+
+/* some parameters for the board */
+#define FLASH_90ns_WAIT_STATES	((NETARM_PLL_COUNT_VAL + 2) / 3)
+#define FLASH_70ns_WAIT_STATES	4
+
+#define NETARM_MMAP_CS0_BASE	(PHYS_FLASH_1)
+#if 1
+#define NETARM_MMAP_CS0_MASK	(~(PHYS_FLASH_1_SIZE - 1))
+#else
+#define NETARM_MMAP_CS0_MASK	(~(1000000 - 1))
+#endif
+#define NETARM_MMAP_CS1_BASE	(PHYS_SDRAM_1)
+#define NETARM_MMAP_CS1_MASK	(~(PHYS_SDRAM_1_SIZE - 1))
+#define NETARM_MMAP_CS2_BASE	(PHYS_SDRAM_2)
+#define NETARM_MMAP_CS2_MASK	(~(PHYS_SDRAM_2_SIZE - 1))
+#if defined(CONFIG_NETARM_EEPROM) && defined(PHYS_NVRAM_1) && defined(PHYS_NVRAM_SIZE)
+#define NETARM_MMAP_CS3_BASE	(PHYS_NVRAM_1)
+#define NETARM_MMAP_CS3_MASK	(~(PHYS_NVRAM_SIZE - 1))
+#endif
+#define NETARM_MMAP_CS4_BASE	(PHYS_EXT_1)
+#define NETARM_MMAP_CS4_MASK	(~(PHYS_EXT_SIZE - 1))
+
+/* setting up the memory */
+.globl memsetup
+memsetup:
+
+#if defined(CONFIG_MODNET50)
+	ldr	pc, =(_jump_to_high + NETARM_MMAP_CS0_BASE - TEXT_BASE)
+
+_jump_to_high:
+	/*
+	 * MEM Config Reg
+	 * ---------------------------------------------------
+	 */
+	ldr	r0, =NETARM_MEM_MODULE_BASE
+	ldr	r1, =(	NETARM_MEM_REFR_PERIOD_USEC(16) | \
+			NETARM_MEM_CFG_REFRESH_EN | \
+			NETARM_MEM_CFG_REFR_CYCLE_5CLKS )
+	str	r1, [r0, #+NETARM_MEM_MODULE_CONFIG]
+
+
+memsetup_cs0:
+	/*
+	 * Base Addr / Option Reg 0 (Flash)
+	 * ---------------------------------------------------
+	 */
+	ldr	r1, =(	NETARM_MEM_BAR_BASE(NETARM_MMAP_CS0_BASE) | \
+			NETARM_MEM_BAR_DRAM_FP | \
+			NETARM_MEM_BAR_DRAM_MUX_INT | \
+			NETARM_MEM_BAR_DRAM_MUX_BAL | \
+			NETARM_MEM_BAR_VALID )
+	str	r1, [r0, #+NETARM_MEM_CS0_BASE_ADDR]
+
+	/* trust that the bus size for flash was strapped correctly */
+	/* this saves the bus width in r2 and then ORs it back in */
+	/* it's pretty safe assumption, otherwise it wouldn't boot */
+	ldr	r2, [r0, #+NETARM_MEM_CS0_OPTIONS]
+	and	r2, r2, #NETARM_MEM_OPT_BUS_SIZE_MASK
+
+/*	just a test: assume 32 bit flash mem */
+/*	mov	r2, #NETARM_MEM_OPT_32BIT */
+
+	ldr	r1, =(	NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS0_MASK) | \
+			NETARM_MEM_OPT_WAIT_STATES(FLASH_70ns_WAIT_STATES) | \
+			NETARM_MEM_OPT_BCYC_4 | \
+			NETARM_MEM_OPT_BSIZE_16 | \
+			NETARM_MEM_OPT_16BIT | \
+			NETARM_MEM_OPT_READ_ASYNC | \
+			NETARM_MEM_OPT_WRITE_ASYNC )
+
+	orr	r1, r1, r2
+	str	r1, [r0, #+NETARM_MEM_CS0_OPTIONS]
+
+
+memsetup_cs1:
+	/*
+	 * Base Addr / Option Reg 1 (DRAM #1)
+	 * ---------------------------------------------------
+	 */
+#ifdef CONFIG_NETARM_NET40_REV2
+	/* we have to config SDRAM in burst mode */
+	ldr	r1, =(	NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS1_MASK) | \
+			NETARM_MEM_OPT_BCYC_2 | \
+			NETARM_MEM_OPT_BSIZE_16 | \
+			NETARM_MEM_OPT_WAIT_STATES(0) | \
+			NETARM_MEM_OPT_32BIT | \
+			NETARM_MEM_OPT_READ_ASYNC | \
+			NETARM_MEM_OPT_WRITE_ASYNC )
+	str	r1, [r0, #+NETARM_MEM_CS1_OPTIONS]
+
+	ldr	r1, =(	NETARM_MEM_BAR_BASE(NETARM_MMAP_CS1_BASE) | \
+			NETARM_MEM_BAR_DRAM_SYNC | \
+			NETARM_MEM_BAR_DRAM_MUX_INT | \
+			NETARM_MEM_BAR_DRAM_MUX_UNBAL | \
+			NETARM_MEM_BAR_DRAM_SEL | \
+			NETARM_MEM_BAR_BURST_EN | \
+			NETARM_MEM_BAR_VALID )
+	str	r1, [r0, #+NETARM_MEM_CS1_BASE_ADDR]
+#else
+	/* we have to config FPDRAM in burst mode with smaller burst access size */
+	ldr	r1, =(	NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS1_MASK) | \
+			NETARM_MEM_OPT_BCYC_2 | \
+			NETARM_MEM_OPT_BSIZE_16 | \
+			NETARM_MEM_OPT_WAIT_STATES(0) | \
+			NETARM_MEM_OPT_32BIT | \
+			NETARM_MEM_OPT_READ_ASYNC | \
+			NETARM_MEM_OPT_WRITE_ASYNC )
+	str	r1, [r0, #+NETARM_MEM_CS1_OPTIONS]
+
+	ldr	r1, =(	NETARM_MEM_BAR_BASE(NETARM_MMAP_CS1_BASE) | \
+			NETARM_MEM_BAR_DRAM_SYNC | \
+			NETARM_MEM_BAR_DRAM_MUX_INT | \
+			NETARM_MEM_BAR_DRAM_MUX_UNBAL | \
+			NETARM_MEM_BAR_DRAM_SEL | \
+			NETARM_MEM_BAR_BURST_EN | \
+			NETARM_MEM_BAR_VALID )
+	str	r1, [r0, #+NETARM_MEM_CS1_BASE_ADDR]
+
+#endif /* CONFIG_NETARM_NET40_REV2 */
+
+
+memsetup_cs3:
+	/*
+	 * Base Addr / Option Reg 3 (EEPROM, NVRAM)
+	 * ---------------------------------------------------
+	 */
+#if defined(CONFIG_NETARM_EEPROM) && defined(PHYS_NVRAM_1) && defined(PHYS_NVRAM_SIZE)
+	ldr	r1, =(	NETARM_MEM_OPT_BASE_USE(NETARM_MMAP_CS3_MASK) | \
+			NETARM_MEM_OPT_BCYC_3 | \
+			NETARM_MEM_OPT_BSIZE_2 | \
+			NETARM_MEM_OPT_WAIT_STATES(10) | \
+			NETARM_MEM_OPT_8BIT | \
+			NETARM_MEM_OPT_READ_ASYNC | \
+			NETARM_MEM_OPT_WRITE_ASYNC )
+	str	r1, [r0, #+NETARM_MEM_CS3_OPTIONS]
+
+	ldr	r1, =(	NETARM_MEM_BAR_BASE(NETARM_MMAP_CS3_BASE) | \
+			NETARM_MEM_BAR_DRAM_FP | \
+			NETARM_MEM_BAR_DRAM_MUX_INT | \
+			NETARM_MEM_BAR_DRAM_MUX_BAL | \
+			NETARM_MEM_BAR_VALID )
+	str	r1, [r0, #+NETARM_MEM_CS3_BASE_ADDR]
+#else
+	/* we don't need EEPROM --> no config */
+	ldr	r1, =( 0 )
+	str	r1, [r0, #+NETARM_MEM_CS3_OPTIONS]
+
+	ldr	r1, =( 0 )
+	str	r1, [r0, #+NETARM_MEM_CS3_BASE_ADDR]
+#endif
+
+
+#else
+/*
+#error "missing CONFIG_MODNET50 (see your config.h)"
+*/
+#endif /* CONFIG_MODNET50 */
+
+
+memsetup_end:
+	/*
+	 * manipulate address in lr and ip to match new
+	 * address space
+	 */
+	ldr	r3, =(NETARM_MMAP_CS0_BASE)
+	mov	r0, lr
+	add	r0, r3, r0
+	mov	lr, r0
+	mov	r0, ip
+	add	r0, r3, r0
+	mov	ip, r0
+
+	/* everything is fine now */
+	mov	pc, lr
diff --git a/board/modnet50/modnet50.c b/board/modnet50/modnet50.c
new file mode 100644
index 0000000000..448c6233e9
--- /dev/null
+++ b/board/modnet50/modnet50.c
@@ -0,0 +1,52 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@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>
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	/* address for the kernel command line */
+	gd->bd->bi_boot_params = 0x800;
+	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;
+	}
+	return (0);
+}
diff --git a/board/modnet50/u-boot.lds b/board/modnet50/u-boot.lds
new file mode 100644
index 0000000000..ac09f5fb7c
--- /dev/null
+++ b/board/modnet50/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) }
+}