Patch by Sam Song, 09 Jun 2004:

- Add support for RPXlite_DW board
- Update FLASH driver for 4*AM29DL323DB90VI
- Add option configuration of CFG_ENV_IS_IN_NVRAM on RPXlite_DW board

7 files changed, 1109 insertions, 0 deletions

diff --git a/board/RPXlite_dw/Makefile b/board/RPXlite_dw/Makefile
new file mode 100644
index 0000000..d457020
--- /dev/null
+++ b/board/RPXlite_dw/Makefile
@@ -0,0 +1,40 @@
+#
+# (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	= $(BOARD).o flash.o
+
+$(LIB):	.depend $(OBJS)
+	$(AR) crv $@ $(OBJS)
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+sinclude .depend
+
+#########################################################################
diff --git a/board/RPXlite_dw/README b/board/RPXlite_dw/README
new file mode 100644
index 0000000..bf44f17
--- /dev/null
+++ b/board/RPXlite_dw/README
@@ -0,0 +1,96 @@
+
+After following the step of Yoo. Jonghoon and Wolfgang Denk,
+I ported u-boot on RPXlite DW version board: RPXlite_DW or LITE_DW.
+
+There are three differences between the Yoo-ported RPXlite and the RPXlite_DW.
+
+Board(in U-BOOT)	version(in EmbeddedPlanet)	CPU	SDRAM	FLASH
+RPXlite				RPXlite CW		850	16MB	4MB
+RPXlite_DW			RPXlite DW		823e	64MB	16MB
+
+This fireware is specially coded for EmbeddedPlanet Co. Software Development
+Platform(RPXlite DW),which has a NEC NL6448BC20-08 LCD panel.
+
+It has the following three features:
+
+1. 64MHz/48MHz system frequence setting options.
+The default setting is 48MHz.To get a 64MHz u-boot,just add
+'64' in make command,like
+
+make RPXlite_DW_64_config
+make all
+
+2. CFG_ENV_IS_IN_FLASH/CFG_ENV_IS_IN_NVRAM
+
+The default environment parameter is stored in FLASH because it is a common choice for
+environment parameter.So I make NVRAM as backup parameter storeage.The reason why I
+didn't use EEPROM for ENV is that PlanetCore V2.0 use EEPROM as environment parameter
+home.Because of the possibility of using two firewares on this board,I didn't
+'disturb' EEPROM.To get NVRAM support,you may use the following build command:
+
+make RPXlite_DW_NVRAM_config
+make all
+
+3. LCD panel support
+
+To support the Platform better,I added LCD panel(NL6448BC20-08) function.But bewear of
+the fact that once you build this support and program it to FLASH,you should make sure
+you put workable kernel and ramdisk at the right place in FLASH or through NFS.
+Otherwise, you must erase this fireware manually via BDI2000 or ICE tools.So this
+function is used for deployment and demo only.Pls look before you leap.
+
+To get a LCD support u-boot,you can do the following:
+
+make RPXlite_DW_LCD_config
+make all
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The basic make commands could be:
+
+make RPXlite_DW_config
+make RPXlite_DW_64_config
+make RPXlite_DW_LCD_config
+make RPXlite_DW_NVRAM_config
+
+BTW,you can combine the above features together and get a workable u-boot to meet your need.
+For example,to get a 64MHZ && ENV_IS_IN_FLASH && LCD panel support u-boot,you can type:
+
+make RPXlite_DW_NVRAM_64_LCD_config
+make all
+
+So other combining make commands could be:
+
+make RPXlite_DW_NVRAM_64_config
+make RPXlite_DW_NVRAM_LCD_config
+make RPXlite_DW_64_LCD_config
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+The boot process by "make RPXlite_DW_config" could be:
+
+U-Boot 1.1.1 (Jun  8 2004 - 11:16:30)
+
+CPU:   PPC823EZTnnB2 at 48 MHz: 16 kB I-Cache 8 kB D-Cache
+Board: RPXlite_DW
+DRAM:  64 MB
+FLASH: 16 MB
+*** Warning - bad CRC, using default environment
+
+In:    serial
+Out:   serial
+Err:   serial
+Net:   SCC ETHERNET
+u-boot>
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+I'd like to extend my heartfelt gratitute to kind people for helping me work it out.
+I would particually thank Wolfgang Denk for his nice help.
+
+Enjoy,
+
+Sam Song, samsongshu@yahoo.com.cn
+Institute of Electrical Machinery and Controls
+Shanghai University
+
+June 8,2004
diff --git a/board/RPXlite_dw/RPXlite_dw.c b/board/RPXlite_dw/RPXlite_dw.c
new file mode 100644
index 0000000..86cf6c1
--- /dev/null
+++ b/board/RPXlite_dw/RPXlite_dw.c
@@ -0,0 +1,180 @@
+/*
+ * (C) Copyright 2004
+ * Sam Song, IEMC. SHU, samsongshu@yahoo.com.cn
+ *
+ * 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
+ */
+
+/*
+ * Sam Song
+ * U-Boot port on RPXlite DW board : RPXlite_DW or LITE_DW
+ * Tested on working at 64MHz(CPU)/32MHz(BUS),48MHz/24MHz
+ * with 64MB, 2 SDRAM Micron chips,MT48LC16M16A2-75.
+ */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+/* ------------------------------------------------------------------------- */
+static long int dram_size (long int, long int *, long int);
+/* ------------------------------------------------------------------------- */
+
+#define	_NOT_USED_	0xFFFFCC25
+
+const uint sdram_table[] =
+{
+	/*
+	 * Single Read. (Offset 00h in UPMA RAM)
+	 */
+	0x0F03CC04, 0x00ACCC24, 0x1FF74C20, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_,
+
+	/*
+	 * Burst Read. (Offset 08h in UPMA RAM)
+	 */
+	0x0F03CC04, 0x00ACCC24, 0x00FFCC20, 0x00FFCC20,
+	0x01FFCC20, 0x1FF74C20, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Single Write. (Offset 18h in UPMA RAM)
+	 */
+	0x0F03CC02, 0x00AC0C24, 0x1FF74C25, /* last */
+	_NOT_USED_, _NOT_USED_, 0x0FA00C34,0x0FFFCC35,
+	_NOT_USED_,
+
+	/*
+	 * Burst Write. (Offset 20h in UPMA RAM)
+	 */
+	0x0F03CC00, 0x00AC0C20, 0x00FFFC20, 0x00FFFC22,
+	0x01FFFC24, 0x1FF74C25, /* last */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_,
+
+	/*
+	 * Refresh. (Offset 30h in UPMA RAM)
+	 */
+	0x0FF0CC24, 0xFFFFCC24, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, 0xEFFB8C34, 0x0FF74C34,
+	0x0FFACCB4, 0x0FF5CC34, 0x0FFFCC34, 0x0FFFCCB4,
+	/* INIT sequence RAM WORDS
+	 * SDRAM Initialization (offset 0x36 in UPMA RAM)
+	 * The above definition uses the remaining space
+	 * to establish an initialization sequence,
+	 * which is executed by a RUN command.
+	 * The sequence is COMMAND INHIBIT(NOP),Precharge,
+	 * Load Mode Register,NOP,Auto Refresh.
+	 */
+
+	/*
+	 * Exception. (Offset 3Ch in UPMA RAM)
+	 */
+	0x0FEA8C34, 0x1FB54C34, 0xFFFFCC34, _NOT_USED_
+};
+
+/*
+ * Check Board Identity:
+ */
+
+int checkboard (void)
+{
+	puts ("Board: RPXlite_DW\n") ;
+	return (0) ;
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram (int board_type)
+{
+	volatile immap_t     *immap  = (immap_t *)CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+	long int size9;
+
+	upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint));
+
+	/* Refresh clock prescalar */
+	memctl->memc_mptpr = CFG_MPTPR ;
+
+	memctl->memc_mar  = 0x00000088;
+
+	/* Map controller banks 1 to the SDRAM bank */
+	memctl->memc_or1 = CFG_OR1_PRELIM;
+	memctl->memc_br1 = CFG_BR1_PRELIM;
+
+	memctl->memc_mamr = CFG_MAMR_9COL & (~(MAMR_PTAE)); /* no refresh yet */
+	/*Disable Periodic timer A. */
+
+ 	udelay(200);
+
+	/* perform SDRAM initializsation sequence */
+
+	memctl->memc_mcr  = 0x80002236; /* SDRAM bank 0 - refresh twice */
+
+	udelay(1);
+
+	memctl->memc_mamr |= MAMR_PTAE;	/* enable refresh */
+
+	/*Enable Periodic timer A */
+
+	udelay (1000);
+
+	 /* Check Bank 0 Memory Size
+	  * try 9 column mode
+	  */
+
+	size9 = dram_size (CFG_MAMR_9COL, (ulong *)SDRAM_BASE_PRELIM, SDRAM_MAX_SIZE);
+
+	/*
+	 * Final mapping:
+	 */
+
+	memctl->memc_or1 = ((-size9) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
+
+	udelay (1000);
+
+	return (size9);
+}
+
+void rpxlite_init (void)
+{
+	/* Enable NVRAM */
+	*((uchar *) BCSR0) |= BCSR0_ENNVRAM;
+}
+
+/*
+ * Check memory range for valid RAM. A simple memory test determines
+ * the actually available RAM size between addresses `base' and
+ * `base + maxsize'. Some (not all) hardware errors are detected:
+ * - short between address lines
+ * - short between data lines
+ */
+static long int dram_size (long int mamr_value, long int *base,
+			   long int maxsize)
+{
+	volatile immap_t *immap = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+	memctl->memc_mamr = mamr_value;
+
+	return (get_ram_size (base, maxsize));
+}
diff --git a/board/RPXlite_dw/config.mk b/board/RPXlite_dw/config.mk
new file mode 100644
index 0000000..7970910
--- /dev/null
+++ b/board/RPXlite_dw/config.mk
@@ -0,0 +1,29 @@
+#
+# (C) Copyright 2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+# Sam Song, IEMC. SHU, samsongshu@yahoo.com.cn
+#
+# 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
+#
+
+#
+# RPXlite dw boards : lite_dw
+#
+
+TEXT_BASE = 0xff000000
diff --git a/board/RPXlite_dw/flash.c b/board/RPXlite_dw/flash.c
new file mode 100644
index 0000000..1cbd537
--- /dev/null
+++ b/board/RPXlite_dw/flash.c
@@ -0,0 +1,490 @@
+/*
+ * (C) Copyright 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
+ */
+
+/*
+ * Yoo. Jonghoon, IPone, yooth@ipone.co.kr
+ * U-Boot port on RPXlite board
+ *
+ * Some of flash control words are modified. (from 2x16bit device
+ * to 4x8bit device)
+ * RPXLite board I tested has only 4 AM29LV800BB devices. Other devices
+ * are not tested.
+ *
+ * (?) Does an RPXLite board which
+ * 	does not use AM29LV800 flash memory exist ?
+ *	I don't know...
+ */
+
+/* Yes,Yoo.They do use other FLASH for the board.
+ *
+ * Sam Song, IEMC. SHU, samsongshu@yahoo.com.cn
+ * U-Boot port on RPXlite DW version board
+ *
+ * By now,it uses 4 AM29DL323DB90VI devices(4x8bit).
+ * The total FLASH has 16MB(4x4MB).
+ * I just made some necessary changes on the basis of Wolfgang and Yoo's job.
+ *
+ * June 8, 2004 */
+
+#include <common.h>
+#include <mpc8xx.h>
+
+flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
+
+/*-----------------------------------------------------------------------
+ * Functions   vu_long : volatile unsigned long IN include/common.h
+ */
+static ulong flash_get_size (vu_long *addr, flash_info_t *info);
+static int write_word (flash_info_t *info, ulong dest, ulong data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+
+unsigned long flash_init (void)
+{
+	unsigned long size_b0 ;
+	int i;
+
+	/* Init: no FLASHes known */
+	for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
+		flash_info[i].flash_id = FLASH_UNKNOWN;
+	}
+
+	size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
+	flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
+
+#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
+	/* If Monitor is in the cope of FLASH,then
+	 * protect this area by default in case for
+	 * other occupation. [SAM] */
+
+	/* monitor protection ON by default */
+	flash_protect(FLAG_PROTECT_SET,
+		      CFG_MONITOR_BASE,
+		      CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
+		      &flash_info[0]);
+#endif
+	flash_info[0].size = size_b0;
+	return (size_b0);
+}
+
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	int i;
+
+	/* set up sector start address table */
+	if (info->flash_id & FLASH_BTYPE) {
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00008000;
+		info->start[2] = base + 0x00010000;
+		info->start[3] = base + 0x00018000;
+		info->start[4] = base + 0x00020000;
+		info->start[5] = base + 0x00028000;
+		info->start[6] = base + 0x00030000;
+		info->start[7] = base + 0x00038000;
+
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + ((i-7) * 0x00040000);
+		}
+	} else {
+		i = info->sector_count - 1;
+		info->start[i--] = base + info->size - 0x00010000;
+		info->start[i--] = base + info->size - 0x00018000;
+		info->start[i--] = base + info->size - 0x00020000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00040000;
+		}
+	}
+
+}
+
+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_AM400B:	printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM400T:	printf ("AM29LV400T (4 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM800B:	printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM800T:	printf ("AM29LV800T (8 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM160B:	printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM160T:	printf ("AM29LV160T (16 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AM320B:	printf ("AM29LV320B (32 Mbit, bottom boot sect)\n");
+				break;
+	case FLASH_AM320T:	printf ("AM29LV320T (32 Mbit, top boot sector)\n");
+				break;
+	case FLASH_AMDL323B:    printf ("AM29DL323B (32 Mbit, bottom boot sector)\n");
+				break;
+	/* I just add the FLASH_AMDL323B for RPXlite_DW BOARD. [SAM]  */
+	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 % 5) == 0)
+			printf ("\n   ");
+		printf (" %08lX%s",info->start[i],info->protect[i] ? " (RO)" : "     ");
+	}
+	printf ("\n");
+	return;
+}
+
+static ulong flash_get_size (vu_long *addr, flash_info_t *info)
+{
+	short i;
+	ulong value;
+	ulong base = (ulong)addr;
+
+	/* Write auto select command: read Manufacturer ID */
+	addr[0xAAA] = 0x00AA00AA ;
+	addr[0x555] = 0x00550055 ;
+	addr[0xAAA] = 0x00900090 ;
+
+	value = addr[0] ;
+	switch (value & 0x00FF00FF) {
+	case AMD_MANUFACT:             		/* AMD_MANUFACT=0x00010001 in flash.h. */
+		info->flash_id = FLASH_MAN_AMD; /* FLASH_MAN_AMD=0x00000000 in flash.h.*/
+		break;
+	case FUJ_MANUFACT:
+		info->flash_id = FLASH_MAN_FUJ;
+		break;
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		return (0);			/* no or unknown flash	*/
+	}
+
+	value = addr[2] ;			/* device ID		*/
+	switch (value & 0x00FF00FF) {
+	case (AMD_ID_LV400T & 0x00FF00FF):
+		info->flash_id += FLASH_AM400T;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+	case (AMD_ID_LV400B & 0x00FF00FF):
+		info->flash_id += FLASH_AM400B;
+		info->sector_count = 11;
+		info->size = 0x00100000;
+		break;				/* => 1 MB		*/
+	case (AMD_ID_LV800T & 0x00FF00FF):
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00200000;
+		break;				/* => 2 MB		*/
+	case (AMD_ID_LV800B & 0x00FF00FF):
+		info->flash_id += FLASH_AM800B;
+		info->sector_count = 19;
+		info->size = 0x00400000;	/* Size doubled by yooth */
+		break;				/* => 4 MB		 */
+	case (AMD_ID_LV160T & 0x00FF00FF):
+		info->flash_id += FLASH_AM160T;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+	case (AMD_ID_LV160B & 0x00FF00FF):
+		info->flash_id += FLASH_AM160B;
+		info->sector_count = 35;
+		info->size = 0x00400000;
+		break;				/* => 4 MB		*/
+	case (AMD_ID_DL323B & 0x00FF00FF):
+		info->flash_id += FLASH_AMDL323B;
+		info->sector_count = 71;
+		info->size = 0x01000000;
+		break;                          /* => 16 MB(4x4MB)  */
+	/* AMD_ID_DL323B= 0x22532253  FLASH_AMDL323B= 0x0013
+	 * AMD_ID_DL323B could be found in <flash.h>.[SAM]
+	 * So we could get : flash_id = 0x00000013.
+	 * The first four-bit represents VEDOR ID,leaving others for FLASH ID. */
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		return (0);			/* => no or unknown flash */
+
+	}
+	/* set up sector start address table */
+	if (info->flash_id & FLASH_BTYPE) {
+	/* FLASH_BTYPE=0x0001 mask for bottom boot sector type.If the last bit equals 1,
+	 * it means bottom boot flash. GOOD IDEA! [SAM]
+	 */
+
+	/* set sector offsets for bottom boot block type        */
+		info->start[0] = base + 0x00000000;
+		info->start[1] = base + 0x00008000;
+		info->start[2] = base + 0x00010000;
+		info->start[3] = base + 0x00018000;
+		info->start[4] = base + 0x00020000;
+		info->start[5] = base + 0x00028000;
+		info->start[6] = base + 0x00030000;
+		info->start[7] = base + 0x00038000;
+
+		for (i = 8; i < info->sector_count; i++) {
+			info->start[i] = base + ((i-7) * 0x00040000) ;
+		}
+	} else {
+		/* set sector offsets for top boot block type		*/
+		i = info->sector_count - 1;
+		info->start[i--] = base + info->size - 0x00010000;
+		info->start[i--] = base + info->size - 0x00018000;
+		info->start[i--] = base + info->size - 0x00020000;
+		for (; i >= 0; i--) {
+			info->start[i] = base + i * 0x00040000;
+		}
+	}
+
+	/* check for protected sectors */
+	for (i = 0; i < info->sector_count; i++) {
+		/* read sector protection at sector address, (A7 .. A0) = 0x02 */
+		/* D0 = 1 if protected */
+		addr = (volatile unsigned long *)(info->start[i]);
+		/* info->protect[i] = addr[4] & 1 ; */
+		/* Mask it for disorder FLASH protection **[Sam]** */
+	}
+
+	/*
+	 * Prevent writes to uninitialized FLASH.
+	 */
+	if (info->flash_id != FLASH_UNKNOWN) {
+		addr = (volatile unsigned long *)info->start[0];
+
+		*addr = 0xF0F0F0F0;	/* reset bank */
+	}
+	return (info->size);
+}
+
+int	flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	vu_long *addr = (vu_long*)(info->start[0]);
+	int flag, prot, sect, l_sect;
+	ulong start, now, last;
+
+	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;
+	}
+
+	if ((info->flash_id == FLASH_UNKNOWN) ||
+	    (info->flash_id > FLASH_AMD_COMP)) {
+		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");
+	}
+
+	l_sect = -1;
+
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	addr[0xAAA] = 0xAAAAAAAA;
+	addr[0x555] = 0x55555555;
+	addr[0xAAA] = 0x80808080;
+	addr[0xAAA] = 0xAAAAAAAA;
+	addr[0x555] = 0x55555555;
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect<=s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			addr = (vu_long *)(info->start[sect]) ;
+			addr[0] = 0x30303030 ;
+			l_sect = sect;
+		}
+	}
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* wait at least 80us - let's wait 1 ms */
+	udelay (1000);
+
+	/*
+	 * We wait for the last triggered sector
+	 */
+	if (l_sect < 0)
+		goto DONE;
+
+	start = get_timer (0);
+	last  = start;
+	addr = (vu_long *)(info->start[l_sect]);
+	while ((addr[0] & 0x80808080) != 0x80808080) {
+		if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
+			printf ("Timeout\n");
+			return 1;
+		}
+		/* show that we're waiting */
+		if ((now - last) > 1000) {	/* every second */
+			putc ('.');
+			last = now;
+		}
+	}
+
+DONE:
+	/* reset to read mode */
+	addr = (vu_long *)info->start[0];
+	addr[0] = 0xF0F0F0F0;	/* reset bank */
+
+	printf (" done\n");
+	return 0;
+}
+
+/*-----------------------------------------------------------------------
+ * 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)
+{
+	ulong cp, wp, data;
+	int i, l, rc;
+
+	wp = (addr & ~3);	/* 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);
+		}
+		for (; i<4 && cnt>0; ++i) {
+			data = (data << 8) | *src++;
+			--cnt;
+			++cp;
+		}
+		for (; cnt==0 && i<4; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *)cp);
+		}
+
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp += 4;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	while (cnt >= 4) {
+		data = 0;
+		for (i=0; i<4; ++i) {
+			data = (data << 8) | *src++;
+		}
+		if ((rc = write_word(info, wp, data)) != 0) {
+			return (rc);
+		}
+		wp  += 4;
+		cnt -= 4;
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i<4; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *)cp);
+	}
+	return (write_word(info, wp, data));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_word (flash_info_t *info, ulong dest, ulong data)
+{
+	vu_long *addr = (vu_long *)(info->start[0]);
+	ulong start;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*((vu_long *)dest) & data) != data) {
+		return (2);
+	}
+	/* Disable interrupts which might cause a timeout here */
+	flag = disable_interrupts();
+
+	addr[0xAAA] = 0xAAAAAAAA;
+	addr[0x555] = 0x55555555;
+	addr[0xAAA] = 0xA0A0A0A0;
+
+	*((vu_long *)dest) = data;
+
+	/* re-enable interrupts if necessary */
+	if (flag)
+		enable_interrupts();
+
+	/* data polling for D7 */
+	start = get_timer (0);
+	while ((*((vu_long *)dest) & 0x80808080) != (data & 0x80808080)) {
+		if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
+			return (1);
+		}
+	}
+	return (0);
+}
diff --git a/board/RPXlite_dw/u-boot.lds b/board/RPXlite_dw/u-boot.lds
new file mode 100644
index 0000000..9f7da0b
--- /dev/null
+++ b/board/RPXlite_dw/u-boot.lds
@@ -0,0 +1,139 @@
+/*
+ * (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_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      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/mpc8xx/start.o	(.text)
+    common/dlmalloc.o	(.text)
+    lib_ppc/ppcstring.o	(.text)
+    lib_generic/vsprintf.o	(.text)
+    lib_generic/crc32.o		(.text)
+    lib_generic/zlib.o		(.text)
+/* XXX ?
+    . = env_offset;
+*/
+    common/environment.o(.text)
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+    *(.rodata.str1.4)
+  }
+  .fini      : { *(.fini)    } =0
+  .ctors     : { *(.ctors)   }
+  .dtors     : { *(.dtors)   }
+
+  /* Read-write section, merged into data segment: */
+  . = (. + 0x00FF) & 0xFFFFFF00;
+  _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(256);
+  __init_begin = .;
+  .text.init : { *(.text.init) }
+  .data.init : { *(.data.init) }
+  . = ALIGN(256);
+  __init_end = .;
+
+  __bss_start = .;
+  .bss       :
+  {
+   *(.sbss) *(.scommon)
+   *(.dynbss)
+   *(.bss)
+   *(COMMON)
+  }
+  _end = . ;
+  PROVIDE (end = .);
+}
diff --git a/board/RPXlite_dw/u-boot.lds.debug b/board/RPXlite_dw/u-boot.lds.debug
new file mode 100644
index 0000000..4e369d5
--- /dev/null
+++ b/board/RPXlite_dw/u-boot.lds.debug
@@ -0,0 +1,135 @@
+/*
+ * (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_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      :
+  {
+    /* WARNING - the following is hand-optimized to fit within	*/
+    /* the sector layout of our flash chips!	XXX FIXME XXX	*/
+
+    cpu/mpc8xx/start.o	(.text)
+    common/dlmalloc.o	(.text)
+    lib_generic/vsprintf.o	(.text)
+    lib_generic/crc32.o		(.text)
+
+    . = env_offset;
+    common/environment.o(.text)
+
+    *(.text)
+    *(.fixup)
+    *(.got1)
+  }
+  _etext = .;
+  PROVIDE (etext = .);
+  .rodata    :
+  {
+    *(.rodata)
+    *(.rodata1)
+  }
+  .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 = .);
+}