Add support for MP2USB board.

Patch by Eric Benard, 07 Apr 2005
20 years ago · 0e4018d244
parent c570b2fdf5
commit 0e4018d244
10 changed files with 1203 additions and 4 deletions
--- a/3
+++ b/3
@ -2,6 +2,9 @@
 Changes for U-Boot 1.1.4:
 ======================================================================

+* Add support for MP2USB board.
+  Patch by Eric Benard, 07 Apr 2005
+
 * Add board support for armadillo HT1070
  Patch by Rowel Atienza, 06 Apr 2005

--- a/8
+++ b/8
@ -179,10 +179,10 @@ LIST_ARM9="	\
 	integratorcp_CM920T_ETM		integratorcp_CM922T_XA10	\
 	integratorcp_CM926EJ_S		integratorcp_CM940T		\
 	integratorcp_CM946E_S		integratorcp_CM966E_S		\
-	lpd7a400	mx1ads		mx1fs2		omap1510inn	\
-	omap1610h2	omap1610inn	omap730p2	scb9328		\
-	smdk2400	smdk2410	trab		VCMA9		\
-	versatile	voiceblue					\
+	lpd7a400	mp2usb		mx1ads		mx1fs2		\
+	omap1510inn	omap1610h2	omap1610inn	omap730p2	\
+	scb9328		smdk2400	smdk2410	trab		\
+	VCMA9		versatile	voiceblue			\
 "

 #########################################################################
--- a/3
+++ b/3
@ -1390,6 +1390,9 @@ at91rm9200dk_config	:	unconfig
 cmc_pu2_config	:	unconfig
 	@./mkconfig $(@:_config=) arm arm920t cmc_pu2 NULL at91rm9200

+mp2usb_config	:	unconfig
+	@./mkconfig $(@:_config=) arm arm920t mp2usb NULL at91rm9200
+
 ########################################################################
 ## ARM Integrator boards
 ## There are two variants /AP && /CP
--- a/board/mp2usb/Makefile
+++ b/board/mp2usb/Makefile
@ -0,0 +1,46 @@
+#
+# (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	:= mp2usb.o dm9161.o flash.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
+
+#########################################################################
--- a/board/mp2usb/config.mk
+++ b/board/mp2usb/config.mk
@ -0,0 +1,3 @@
+TEXT_BASE = 0x27F00000
+## For testing: load at 0x20100000 and "go" at 0x201000A4
+#TEXT_BASE = 0x20100000
--- a/board/mp2usb/dm9161.c
+++ b/board/mp2usb/dm9161.c
@ -0,0 +1,243 @@
+/*
+ * (C) Copyright 2003
+ * Author : Hamid Ikdoumi (Atmel)
+ *
+ * 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 <at91rm9200_net.h>
+#include <net.h>
+#include <dm9161.h>
+
+#ifdef CONFIG_DRIVER_ETHER
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET)
+
+/*
+ * Name:
+ *	dm9161_IsPhyConnected
+ * Description:
+ *	Reads the 2 PHY ID registers
+ * Arguments:
+ *	p_mac - pointer to AT91S_EMAC struct
+ * Return value:
+ *	TRUE - if id read successfully
+ *	FALSE- if error
+ */
+static unsigned int dm9161_IsPhyConnected (AT91PS_EMAC p_mac)
+{
+	unsigned short Id1, Id2;
+
+	at91rm9200_EmacEnableMDIO (p_mac);
+	at91rm9200_EmacReadPhy (p_mac, DM9161_PHYID1, &Id1);
+	at91rm9200_EmacReadPhy (p_mac, DM9161_PHYID2, &Id2);
+	at91rm9200_EmacDisableMDIO (p_mac);
+
+	if ((Id1 == (DM9161_PHYID1_OUI >> 6)) &&
+		((Id2 >> 10) == (DM9161_PHYID1_OUI & DM9161_LSB_MASK)))
+		return TRUE;
+
+	return FALSE;
+}
+
+/*
+ * Name:
+ *	dm9161_GetLinkSpeed
+ * Description:
+ *	Link parallel detection status of MAC is checked and set in the
+ *	MAC configuration registers
+ * Arguments:
+ *	p_mac - pointer to MAC
+ * Return value:
+ *	TRUE - if link status set succesfully
+ *	FALSE - if link status not set
+ */
+static UCHAR dm9161_GetLinkSpeed (AT91PS_EMAC p_mac)
+{
+	unsigned short stat1, stat2;
+
+	if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMSR, &stat1))
+		return FALSE;
+
+	if (!(stat1 & DM9161_LINK_STATUS))	/* link status up? */
+		return FALSE;
+
+	if (!at91rm9200_EmacReadPhy (p_mac, DM9161_DSCSR, &stat2))
+		return FALSE;
+
+	if ((stat1 & DM9161_100BASE_TX_FD) && (stat2 & DM9161_100FDX)) {
+		/*set Emac for 100BaseTX and Full Duplex  */
+		p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
+		return TRUE;
+	}
+
+	if ((stat1 & DM9161_10BASE_T_FD) && (stat2 & DM9161_10FDX)) {
+		/*set MII for 10BaseT and Full Duplex  */
+		p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
+				~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
+				| AT91C_EMAC_FD;
+		return TRUE;
+	}
+
+	if ((stat1 & DM9161_100BASE_T4_HD) && (stat2 & DM9161_100HDX)) {
+		/*set MII for 100BaseTX and Half Duplex  */
+		p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
+				~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
+				| AT91C_EMAC_SPD;
+		return TRUE;
+	}
+
+	if ((stat1 & DM9161_10BASE_T_HD) && (stat2 & DM9161_10HDX)) {
+		/*set MII for 10BaseT and Half Duplex  */
+		p_mac->EMAC_CFG &= ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
+		return TRUE;
+	}
+	return FALSE;
+}
+
+
+/*
+ * Name:
+ *	dm9161_InitPhy
+ * Description:
+ *	MAC starts checking its link by using parallel detection and
+ *	Autonegotiation and the same is set in the MAC configuration registers
+ * Arguments:
+ *	p_mac - pointer to struct AT91S_EMAC
+ * Return value:
+ *	TRUE - if link status set succesfully
+ *	FALSE - if link status not set
+ */
+static UCHAR dm9161_InitPhy (AT91PS_EMAC p_mac)
+{
+	UCHAR ret = TRUE;
+	unsigned short IntValue;
+
+	at91rm9200_EmacEnableMDIO (p_mac);
+
+	if (!dm9161_GetLinkSpeed (p_mac)) {
+		/* Try another time */
+		ret = dm9161_GetLinkSpeed (p_mac);
+	}
+
+	/* Disable PHY Interrupts */
+	at91rm9200_EmacReadPhy (p_mac, DM9161_MDINTR, &IntValue);
+	/* clear FDX, SPD, Link, INTR masks */
+	IntValue &= ~(DM9161_FDX_MASK | DM9161_SPD_MASK |
+		      DM9161_LINK_MASK | DM9161_INTR_MASK);
+	at91rm9200_EmacWritePhy (p_mac, DM9161_MDINTR, &IntValue);
+	at91rm9200_EmacDisableMDIO (p_mac);
+
+	return (ret);
+}
+
+
+/*
+ * Name:
+ *	dm9161_AutoNegotiate
+ * Description:
+ *	MAC Autonegotiates with the partner status of same is set in the
+ *	MAC configuration registers
+ * Arguments:
+ *	dev - pointer to struct net_device
+ * Return value:
+ *	TRUE - if link status set successfully
+ *	FALSE - if link status not set
+ */
+static UCHAR dm9161_AutoNegotiate (AT91PS_EMAC p_mac, int *status)
+{
+	unsigned short value;
+	unsigned short PhyAnar;
+	unsigned short PhyAnalpar;
+
+	/* Set dm9161 control register */
+	if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMCR, &value))
+		return FALSE;
+	value &= ~DM9161_AUTONEG;	/* remove autonegotiation enable */
+	value |= DM9161_ISOLATE;	/* Electrically isolate PHY */
+	if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
+		return FALSE;
+
+	/* Set the Auto_negotiation Advertisement Register */
+	/* MII advertising for Next page, 100BaseTxFD and HD, 10BaseTFD and HD, IEEE 802.3 */
+	PhyAnar = DM9161_NP | DM9161_TX_FDX | DM9161_TX_HDX |
+		  DM9161_10_FDX | DM9161_10_HDX | DM9161_AN_IEEE_802_3;
+	if (!at91rm9200_EmacWritePhy (p_mac, DM9161_ANAR, &PhyAnar))
+		return FALSE;
+
+	/* Read the Control Register     */
+	if (!at91rm9200_EmacReadPhy (p_mac, DM9161_BMCR, &value))
+		return FALSE;
+
+	value |= DM9161_SPEED_SELECT | DM9161_AUTONEG | DM9161_DUPLEX_MODE;
+	if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
+		return FALSE;
+	/* Restart Auto_negotiation  */
+	value |= DM9161_RESTART_AUTONEG;
+	if (!at91rm9200_EmacWritePhy (p_mac, DM9161_BMCR, &value))
+		return FALSE;
+
+	/*check AutoNegotiate complete */
+	udelay (10000);
+	at91rm9200_EmacReadPhy (p_mac, DM9161_BMSR, &value);
+	if (!(value & DM9161_AUTONEG_COMP))
+		return FALSE;
+
+	/* Get the AutoNeg Link partner base page */
+	if (!at91rm9200_EmacReadPhy (p_mac, DM9161_ANLPAR, &PhyAnalpar))
+		return FALSE;
+
+	if ((PhyAnar & DM9161_TX_FDX) && (PhyAnalpar & DM9161_TX_FDX)) {
+		/*set MII for 100BaseTX and Full Duplex  */
+		p_mac->EMAC_CFG |= AT91C_EMAC_SPD | AT91C_EMAC_FD;
+		return TRUE;
+	}
+
+	if ((PhyAnar & DM9161_10_FDX) && (PhyAnalpar & DM9161_10_FDX)) {
+		/*set MII for 10BaseT and Full Duplex  */
+		p_mac->EMAC_CFG = (p_mac->EMAC_CFG &
+				~(AT91C_EMAC_SPD | AT91C_EMAC_FD))
+				| AT91C_EMAC_FD;
+		return TRUE;
+	}
+	return FALSE;
+}
+
+
+/*
+ * Name:
+ *	at91rm92000_GetPhyInterface
+ * Description:
+ *	Initialise the interface functions to the PHY
+ * Arguments:
+ *	None
+ * Return value:
+ *	None
+ */
+void at91rm92000_GetPhyInterface(AT91PS_PhyOps p_phyops)
+{
+	p_phyops->Init = dm9161_InitPhy;
+	p_phyops->IsPhyConnected = dm9161_IsPhyConnected;
+	p_phyops->GetLinkSpeed = dm9161_GetLinkSpeed;
+	p_phyops->AutoNegotiate = dm9161_AutoNegotiate;
+}
+
+#endif	/* CONFIG_COMMANDS & CFG_CMD_NET */
+
+#endif	/* CONFIG_DRIVER_ETHER */
--- a/board/mp2usb/flash.c
+++ b/board/mp2usb/flash.c
@ -0,0 +1,557 @@
+/*
+ * (C) Copyright 2001
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
+ * ebenard@eukrea.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 <linux/byteorder/swab.h>
+
+#define CFG_MAX_FLASH_BANKS	1
+#define PHYS_FLASH_SECT_SIZE	0x00020000 /* 128 KB sectors (x1) */
+
+flash_info_t flash_info[CFG_MAX_FLASH_BANKS];	/* info for FLASH chips */
+
+#define FLASH_PORT_WIDTH	ushort
+#define FLASH_PORT_WIDTHV	vu_short
+#define SWAP(x)			__swab16(x)
+
+#define FPW			FLASH_PORT_WIDTH
+#define FPWV			FLASH_PORT_WIDTHV
+
+#define mb() __asm__ __volatile__ ("" : : : "memory")
+
+/* Intel-compatible flash commands */
+#define INTEL_PROGRAM	0x00100010
+#define INTEL_ERASE	0x00200020
+#define INTEL_PROG	0x00400040
+#define INTEL_CLEAR	0x00500050
+#define INTEL_LOCKBIT	0x00600060
+#define INTEL_PROTECT	0x00010001
+#define INTEL_STATUS	0x00700070
+#define INTEL_READID	0x00900090
+#define INTEL_SUSPEND	0x00B000B0
+#define INTEL_CONFIRM	0x00D000D0
+#define INTEL_RESET	0xFFFFFFFF
+
+/* Intel-compatible flash status bits */
+#define INTEL_FINISHED	0x00800080
+#define INTEL_OK	0x00800080
+
+/*-----------------------------------------------------------------------
+ * Functions
+ */
+static ulong flash_get_size (FPW *addr, flash_info_t *info);
+static int write_data (flash_info_t *info, ulong dest, FPW data);
+static void flash_get_offsets (ulong base, flash_info_t *info);
+void inline spin_wheel (void);
+
+/*-----------------------------------------------------------------------
+ */
+
+unsigned long flash_init (void)
+{
+	int i;
+	ulong size = 0;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+		switch (i) {
+		case 0:
+			flash_get_size ((FPW *) PHYS_FLASH_1, &flash_info[i]);
+			flash_get_offsets (PHYS_FLASH_1, &flash_info[i]);
+			break;
+		default:
+			panic ("configured too many flash banks!\n");
+			break;
+		}
+		size += flash_info[i].size;
+	}
+
+	/* 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;
+}
+
+/*-----------------------------------------------------------------------
+ */
+static void flash_get_offsets (ulong base, flash_info_t *info)
+{
+	int i;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		return;
+	}
+
+	if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL) {
+		for (i = 0; i < info->sector_count; i++) {
+			info->start[i] = base + (i * PHYS_FLASH_SECT_SIZE);
+			info->protect[i] = 0;
+		}
+	}
+}
+
+/*-----------------------------------------------------------------------
+ */
+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_INTEL:
+		printf ("INTEL ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_28F640J3A:
+		printf ("28F640J3A\n");
+		break;
+	case FLASH_28F128J3A:
+		printf ("28F128J3A\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 % 5) == 0)
+			printf ("\n   ");
+		printf (" %08lX%s",
+			info->start[i],
+			info->protect[i] ? " (RO)" : "     ");
+	}
+	printf ("\n");
+	return;
+}
+
+/*
+ * The following code cannot be run from FLASH!
+ */
+static ulong flash_get_size (FPW *addr, flash_info_t *info)
+{
+	volatile FPW value;
+
+	/* Write auto select command: read Manufacturer ID */
+	addr[0x5555] = (FPW) 0x00AA00AA;
+	addr[0x2AAA] = (FPW) 0x00550055;
+	addr[0x5555] = (FPW) 0x00900090;
+
+	mb ();
+	value = addr[0];
+
+	switch (value) {
+
+	case (FPW) INTEL_MANUFACT:
+		info->flash_id = FLASH_MAN_INTEL;
+		break;
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		info->sector_count = 0;
+		info->size = 0;
+		addr[0] = (FPW) INTEL_RESET;	/* restore read mode */
+		return (0);			/* no or unknown flash  */
+	}
+
+	mb ();
+	value = addr[1];			/* device ID        */
+
+	switch (value) {
+
+	case (FPW) INTEL_ID_28F640J3A:
+		info->flash_id += FLASH_28F640J3A;
+		info->sector_count = 64;
+		info->size = 0x00800000;
+		break;				/* => 8 MB     */
+
+	case (FPW) INTEL_ID_28F128J3A:
+		info->flash_id += FLASH_28F128J3A;
+		info->sector_count = 128;
+		info->size = 0x01000000;
+		break;				/* => 16 MB     */
+
+	default:
+		info->flash_id = FLASH_UNKNOWN;
+		break;
+	}
+
+	if (info->sector_count > CFG_MAX_FLASH_SECT) {
+		printf ("** ERROR: sector count %d > max (%d) **\n",
+			info->sector_count, CFG_MAX_FLASH_SECT);
+		info->sector_count = CFG_MAX_FLASH_SECT;
+	}
+
+	addr[0] = (FPW) INTEL_RESET;		/* restore read mode */
+
+	return (info->size);
+}
+
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t *info, int s_first, int s_last)
+{
+	int flag, prot, sect;
+	ulong type, start, last;
+	int rcode = 0;
+	int cflag, iflag;
+
+	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;
+	}
+
+	type = (info->flash_id & FLASH_VENDMASK);
+	if ((type != FLASH_MAN_INTEL)) {
+		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");
+	}
+
+	start = get_timer (0);
+	last = start;
+
+	/*
+	 * 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 ();
+
+	/* Disable interrupts which might cause a timeout here */
+/*	flag = disable_interrupts (); */
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last; sect++) {
+		if (info->protect[sect] == 0) {	/* not protected */
+			FPWV *addr = (FPWV *) (info->start[sect]);
+			FPW status;
+
+			printf ("Erasing sector %2d ... ", sect);
+
+			/* arm simple, non interrupt dependent timer */
+			reset_timer_masked ();
+
+			*addr = (FPW) INTEL_CLEAR;	/* clear status register */
+			*addr = (FPW) INTEL_ERASE;	/* erase setup */
+			*addr = (FPW) INTEL_CONFIRM;	/* erase confirm */
+
+			while (((status = *addr) & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
+				if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+					printf ("Timeout\n");
+					*addr = (FPW) INTEL_SUSPEND;	/* suspend erase     */
+					*addr = (FPW) INTEL_RESET;	/* reset to read mode */
+					rcode = 1;
+					break;
+				}
+			}
+
+			*addr = INTEL_CLEAR;	/* clear status register cmd.   */
+			*addr = INTEL_RESET;	/* resest to read mode          */
+
+			printf (" done\n");
+		}
+	}
+
+	if (iflag)
+		enable_interrupts ();
+
+	if (cflag)
+		icache_enable ();
+
+	return rcode;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ * 4 - Flash not identified
+ */
+
+int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
+{
+	ulong cp, wp;
+	FPW data;
+	int count, i, l, rc, port_width;
+
+	if (info->flash_id == FLASH_UNKNOWN) {
+		return 4;
+	}
+
+	/* get lower word aligned address */
+	wp = (addr & ~1);
+	port_width = 2;
+
+	/*
+	 * 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 < port_width && cnt > 0; ++i) {
+			data = (data << 8) | *src++;
+			--cnt;
+			++cp;
+		}
+		for (; cnt == 0 && i < port_width; ++i, ++cp) {
+			data = (data << 8) | (*(uchar *) cp);
+		}
+
+		if ((rc = write_data (info, wp, SWAP (data))) != 0) {
+			return (rc);
+		}
+		wp += port_width;
+	}
+
+	/*
+	 * handle word aligned part
+	 */
+	count = 0;
+	while (cnt >= port_width) {
+		data = 0;
+		for (i = 0; i < port_width; ++i) {
+			data = (data << 8) | *src++;
+		}
+		if ((rc = write_data (info, wp, SWAP (data))) != 0) {
+			return (rc);
+		}
+		wp += port_width;
+		cnt -= port_width;
+		if (count++ > 0x800) {
+			spin_wheel ();
+			count = 0;
+		}
+	}
+
+	if (cnt == 0) {
+		return (0);
+	}
+
+	/*
+	 * handle unaligned tail bytes
+	 */
+	data = 0;
+	for (i = 0, cp = wp; i < port_width && cnt > 0; ++i, ++cp) {
+		data = (data << 8) | *src++;
+		--cnt;
+	}
+	for (; i < port_width; ++i, ++cp) {
+		data = (data << 8) | (*(uchar *) cp);
+	}
+
+	return (write_data (info, wp, SWAP (data)));
+}
+
+/*-----------------------------------------------------------------------
+ * Write a word or halfword to Flash, returns:
+ * 0 - OK
+ * 1 - write timeout
+ * 2 - Flash not erased
+ */
+static int write_data (flash_info_t *info, ulong dest, FPW data)
+{
+	FPWV *addr = (FPWV *) dest;
+	ulong status;
+	int cflag, iflag;
+	int flag;
+
+	/* Check if Flash is (sufficiently) erased */
+	if ((*addr & data) != data) {
+		printf ("not erased at %08lx (%lx)\n", (ulong) addr, *addr);
+		return (2);
+	}
+	/*
+	 * 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 ();
+
+	/* Disable interrupts which might cause a timeout here */
+	/*flag = disable_interrupts (); */
+
+	*addr = (FPW) INTEL_PROG;	/* write setup */
+	*addr = data;
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked ();
+
+	/* wait while polling the status register */
+	while (((status = *addr) & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
+		if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
+			*addr = (FPW) INTEL_RESET;	/* restore read mode */
+			return (1);
+		}
+	}
+
+	*addr = (FPW) INTEL_RESET;	/* restore read mode */
+
+	if (iflag)
+		enable_interrupts ();
+
+	if (cflag)
+		icache_enable ();
+
+	return (0);
+}
+
+void inline spin_wheel (void)
+{
+	static int p = 0;
+	static char w[] = "\\/-";
+
+	printf ("\010%c", w[p]);
+	(++p == 3) ? (p = 0) : 0;
+}
+
+/*-----------------------------------------------------------------------
+ * Set/Clear sector's lock bit, returns:
+ * 0 - OK
+ * 1 - Error (timeout, voltage problems, etc.)
+ */
+int flash_real_protect(flash_info_t *info, long sector, int prot)
+{
+	int i;
+	int rc = 0;
+	FPWV *addr = (FPWV *)(info->start[sector]);
+	int flag = disable_interrupts();
+
+	*addr = (FPW) INTEL_CLEAR;	/* Clear status register */
+	if (prot) {			/* Set sector lock bit */
+		*addr = (FPW) INTEL_LOCKBIT;	/* Sector lock bit */
+		*addr = (FPW) INTEL_PROTECT;	/* set */
+	}
+	else {				/* Clear sector lock bit */
+		*addr = (FPW) INTEL_LOCKBIT;	/* All sectors lock bits */
+		*addr = (FPW) INTEL_CONFIRM;	/* clear */
+	}
+
+	reset_timer_masked ();
+
+	while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED) {
+		if (get_timer_masked () > CFG_FLASH_UNLOCK_TOUT) {
+			printf("Flash lock bit operation timed out\n");
+			rc = 1;
+			break;
+		}
+	}
+
+	if (*addr != (FPW) INTEL_OK) {
+		printf("Flash lock bit operation failed at %08X, CSR=%08X\n",
+		       (uint)addr, (uint)*addr);
+		rc = 1;
+	}
+
+	if (!rc)
+		info->protect[sector] = prot;
+
+	/*
+	 * Clear lock bit command clears all sectors lock bits, so
+	 * we have to restore lock bits of protected sectors.
+	 */
+	if (!prot)
+	{
+		for (i = 0; i < info->sector_count; i++)
+		{
+			if (info->protect[i])
+			{
+				reset_timer_masked ();
+				addr = (FPWV *) (info->start[i]);
+				*addr = (FPW) INTEL_LOCKBIT;	/* Sector lock bit */
+				*addr = (FPW) INTEL_PROTECT;	/* set */
+				while ((*addr & (FPW) INTEL_FINISHED) != (FPW) INTEL_FINISHED)
+				{
+					if (get_timer_masked () > CFG_FLASH_UNLOCK_TOUT)
+					{
+						printf("Flash lock bit operation timed out\n");
+						rc = 1;
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	if (flag)
+		enable_interrupts();
+
+	*addr = (FPW) INTEL_RESET;		/* Reset to read array mode */
+
+	return rc;
+}
--- a/board/mp2usb/mp2usb.c
+++ b/board/mp2usb/mp2usb.c
@ -0,0 +1,62 @@
+/*
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
+ * ebenard@eukrea.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 <asm/arch/AT91RM9200.h>
+#include <asm/mach-types.h>
+
+/* ------------------------------------------------------------------------- */
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+int board_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/* Enable Ctrlc */
+	console_init_f ();
+
+	/* memory and cpu-speed are setup before relocation */
+	/* so we do _nothing_ here */
+
+	/* arch number of MP2USB-Board. */
+	gd->bd->bi_arch_number = MACH_TYPE_MP2USB;
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}
+
+int dram_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	gd->bd->bi_dram[0].start = PHYS_SDRAM;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+	return 0;
+}
--- a/board/mp2usb/u-boot.lds
+++ b/board/mp2usb/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 = .;
+}
--- a/include/configs/mp2usb.h
+++ b/include/configs/mp2usb.h
@ -0,0 +1,226 @@
+/*
+ * 2004-2005 Gary Jennejohn <garyj@denx.de>
+ *
+ * Modified for the MP2USB by (C) Copyright 2005 Eric Benard
+ * ebenard@eukrea.com
+ *
+ * Configuration settings for the MP2USB 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
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/* ARM asynchronous clock */
+#define AT91C_MAIN_CLOCK	179712000	/* from 18.432 MHz crystal (18432000 / 4 * 45) */
+#define AT91C_MASTER_CLOCK	(AT91C_MAIN_CLOCK/3)	/* peripheral clock */
+
+#define AT91_SLOW_CLOCK		32768	/* slow clock */
+
+#define CONFIG_ARM920T		1	/* This is an ARM920T Core	*/
+#define CONFIG_AT91RM9200	1	/* It's an Atmel AT91RM9200 SoC	*/
+#define CONFIG_AT91RM9200DK	1	/* on an AT91RM9200DK Board	*/
+#define CONFIG_MP2USB		1	/* on an MP2USB Board		*/
+#undef  CONFIG_USE_IRQ			/* we don't need IRQ/FIQ stuff	*/
+#define USE_920T_MMU		1
+
+#define CONFIG_CMDLINE_TAG	1	/* enable passing of ATAGs	*/
+#define CONFIG_SETUP_MEMORY_TAGS 1
+#define CONFIG_INITRD_TAG	1
+
+#define CFG_ATMEL_PLL_INIT_BUG	1
+#ifndef CONFIG_SKIP_LOWLEVEL_INIT
+#define CFG_USE_MAIN_OSCILLATOR		1
+/* flash */
+#define MC_PUIA_VAL	0x00000000
+#define MC_PUP_VAL	0x00000000
+#define MC_PUER_VAL	0x00000000
+#define MC_ASR_VAL	0x00000000
+#define MC_AASR_VAL	0x00000000
+#define EBI_CFGR_VAL	0x00000000
+#define SMC2_CSR_VAL	0x00003084 /* 16bit, 2 TDF, 4 WS */
+
+/* clocks */
+#define PLLAR_VAL	0x20263E04 /* 180 MHz for PCK */
+#define PLLBR_VAL	0x10483E0E /* 48 MHz (divider by 2 for USB) */
+#define MCKR_VAL	0x00000202 /* PCK/3 = MCK Master Clock = 60MHz from PLLA */
+
+/* sdram */
+#define PIOC_ASR_VAL	0xFFFF0000 /* Configure PIOC as peripheral (D16/D31) */
+#define PIOC_BSR_VAL	0x00000000
+#define PIOC_PDR_VAL	0xFFFF0000
+#define EBI_CSA_VAL	0x00000002 /* CS1=SDRAM */
+#define SDRC_CR_VAL	0x3211295A /* set up the SDRAM */
+#define SDRAM		0x20000000 /* address of the SDRAM */
+#define SDRAM1		0x20000020 /* address of the SDRAM */
+#define SDRAM_VAL	0x00000000 /* value written to SDRAM */
+#define SDRC_MR_VAL	0x00000002 /* Precharge All */
+#define SDRC_MR_VAL1	0x00000004 /* refresh */
+#define SDRC_MR_VAL2	0x00000003 /* Load Mode Register */
+#define SDRC_MR_VAL3	0x00000000 /* Normal Mode */
+#define SDRC_TR_VAL	0x000002E0 /* Write refresh rate */
+#endif	/* CONFIG_SKIP_LOWLEVEL_INIT */
+
+/*
+ * Size of malloc() pool
+ */
+#define CFG_MALLOC_LEN	(CFG_ENV_SIZE + 128*1024)
+#define CFG_GBL_DATA_SIZE	128	/* size in bytes reserved for initial data */
+
+#define CONFIG_BAUDRATE		115200
+
+#define CFG_AT91C_BRGR_DIVISOR	33	/* hardcode so no __divsi3 : AT91C_MASTER_CLOCK /(baudrate * 16) */
+
+/*
+ * Hardware drivers
+ */
+
+/* define one of these to choose the DBGU, USART0  or USART1 as console */
+#define CONFIG_DBGU
+#undef CONFIG_USART0
+#undef CONFIG_USART1
+
+#undef	CONFIG_HWFLOW			/* don't include RTS/CTS flow control support	*/
+
+#undef	CONFIG_MODEM_SUPPORT		/* disable modem initialization stuff */
+
+#undef CONFIG_HARD_I2C
+
+#ifdef CONFIG_HARD_I2C
+#define CFG_I2C_SPEED		0	/* not used */
+#define CFG_I2C_SLAVE		0	/* not used */
+#define CONFIG_RTC_RS5C372A		/* RICOH I2C RTC */
+#define CFG_I2C_RTC_ADDR	0x32
+#define CFG_I2C_EEPROM_ADDR	0x50
+#define CFG_I2C_EEPROM_ADDR_LEN 1
+#define CFG_I2C_EEPROM_ADDR_OVERFLOW
+#endif
+/* still about 20 kB free with this defined */
+#define CFG_LONGHELP
+
+#define CONFIG_BOOTDELAY      3
+
+#ifdef CONFIG_HARD_I2C
+#define CONFIG_COMMANDS		\
+		       ((CONFIG_CMD_DFL	| \
+			CFG_CMD_DATE	| \
+			CFG_CMD_DHCP 	| \
+			CFG_CMD_EEPROM	| \
+			CFG_CMD_I2C	| \
+			CFG_CMD_NFS	| \
+			CFG_CMD_SNTP	| \
+			CFG_CMD_MISC))
+#else
+#define CONFIG_COMMANDS		\
+		       ((CONFIG_CMD_DFL	| \
+			CFG_CMD_DHCP 	| \
+			CFG_CMD_NFS	| \
+			CFG_CMD_SNTP	| \
+			CFG_CMD_CACHE)	& \
+		      ~(CFG_CMD_BDI | \
+			CFG_CMD_IMI | \
+			CFG_CMD_AUTOSCRIPT | \
+			CFG_CMD_FPGA | \
+			CFG_CMD_MISC | \
+			CFG_CMD_LOADS ))
+#define CONFIG_TIMESTAMP
+#endif
+#define CFG_LONGHELP
+
+/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
+#include <cmd_confdefs.h>
+
+#define CONFIG_NR_DRAM_BANKS	1
+#define PHYS_SDRAM		0x20000000
+#define PHYS_SDRAM_SIZE		0x08000000 	/* 128 megs */
+
+#define CFG_MEMTEST_START	PHYS_SDRAM
+#define CFG_MEMTEST_END		CFG_MEMTEST_START + PHYS_SDRAM_SIZE - 262144
+
+#define CONFIG_DRIVER_ETHER
+#define CONFIG_NET_RETRY_COUNT		20
+#undef CONFIG_AT91C_USE_RMII
+
+#define PHYS_FLASH_1			0x10000000
+#define PHYS_FLASH_SIZE			0x1000000  /* 16 megs main flash */
+#define CFG_FLASH_BASE			PHYS_FLASH_1
+#define CFG_MONITOR_BASE		CFG_FLASH_BASE
+#define CFG_MAX_FLASH_BANKS		1
+#define CFG_MAX_FLASH_SECT		256
+#define CFG_FLASH_ERASE_TOUT		(2 * CFG_HZ)	/* Timeout for Flash Erase */
+#define CFG_FLASH_WRITE_TOUT		(2 * CFG_HZ)	/* Timeout for Flash Write */
+#define CFG_FLASH_LOCK_TOUT		(10*CFG_HZ)	/* Timeout for Flash Set Lock Bit */
+#define CFG_FLASH_UNLOCK_TOUT		(10*CFG_HZ)	/* Timeout for Flash Clear Lock Bits */
+#define CFG_FLASH_PROTECTION				/* "Real" (hardware) sectors protection */
+
+#define CFG_ENV_IS_IN_FLASH		1
+#define CFG_ENV_OFFSET			0x20000		/* after u-boot.bin */
+#define CFG_ENV_ADDR			(CFG_FLASH_BASE+CFG_ENV_OFFSET)
+#define CFG_ENV_SIZE			0x20000
+
+#define CFG_LOAD_ADDR		0x21000000  /* default load address */
+
+#define CFG_BAUDRATE_TABLE	{ 115200, 57600, 38400, 19200, 9600 }
+
+#define CFG_PROMPT		"=> "		/* Monitor Command Prompt */
+#define CFG_CBSIZE		256		/* Console I/O Buffer Size */
+#define CFG_MAXARGS		32		/* max number of command args */
+#define CFG_PBSIZE		(CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
+
+#ifndef __ASSEMBLY__
+/*-----------------------------------------------------------------------
+ * Board specific extension for bd_info
+ *
+ * This structure is embedded in the global bd_info (bd_t) structure
+ * and can be used by the board specific code (eg board/...)
+ */
+
+struct bd_info_ext {
+	/* helper variable for board environment handling
+	 *
+	 * env_crc_valid == 0	 =>   uninitialised
+	 * env_crc_valid  > 0	 =>   environment crc in flash is valid
+	 * env_crc_valid  < 0	 =>   environment crc in flash is invalid
+	 */
+	int env_crc_valid;
+};
+#endif	/* __ASSEMBLY__ */
+
+#define CFG_HZ 1000
+#define CFG_HZ_CLOCK (AT91C_MASTER_CLOCK/2)	/* AT91C_TC0_CMR is implicitly set to */
+						/* AT91C_TC_TIMER_DIV1_CLOCK */
+
+#define CONFIG_STACKSIZE	(32*1024)	/* regular stack */
+
+#ifdef CONFIG_USE_IRQ
+#error CONFIG_USE_IRQ not supported
+#endif
+
+#define CFG_DEVICE_NULLDEV	 1	/* enble null device		*/
+#undef CONFIG_SILENT_CONSOLE		/* enable silent startup	*/
+
+#define CONFIG_AUTOBOOT_KEYED
+#define CONFIG_AUTOBOOT_PROMPT "Press SPACE to abort autoboot in %d seconds\n"
+#define CONFIG_AUTOBOOT_STOP_STR " "
+#define CONFIG_AUTOBOOT_DELAY_STR "d"
+
+#define CONFIG_VERSION_VARIABLE	1       /* include version env variable */
+
+#endif	/* __CONFIG_H */