[U-Boot-Users] [PATCH 1/6] AT572D940HF-EB Support

Antonio R. Costa costa.antonior at gmail.com
Wed Jun 11 14:56:53 CEST 2008


Logic unit: boart/atmel/at572d940hfeb (except atmel_mci.c)
Purpose:    AT572D940HF-EB core files
Author:     Antnoio R. Costa <antonio.costa <at> atmel.com>
Date  :     11 Jun 2008

Status:
  - USB,MACB,MCI,DBGU,USARTS working
  - Introduced interrput handling on reset to work around
    a bug on SDRAM controller
  - Introduced a function to compute system frequency at run-time
  - Flashes initialised but not recognised
  - Environment is built-in and temporarly stored in SDRAM

Signed-off-by: Antonio R. Costa <antonio.costa at atmel.com>

diff --git a/board/atmel/at572d940hfeb/Makefile b/board/atmel/at572d940hfeb/Makefile
new file mode 100644
index 0000000..c91bea6
--- /dev/null
+++ b/board/atmel/at572d940hfeb/Makefile
@@ -0,0 +1,55 @@
+#
+# (C) Copyright 2003-2008
+# Wolfgang Denk, DENX Software Engineering, wd <at> 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	= $(obj)lib$(BOARD).a
+
+COBJS-y	+= at572d940hfeb.o
+COBJS-y	+= partition.o
+COBJS-y += flash.o
+COBJS-$(CONFIG_CMD_NAND) += nand.o
+COBJS-$(CONFIG_CMD_MMC)  += atmel_mci.o
+COBJS-$(CONFIG_USE_IRQ)	 += interrupts.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/atmel/at572d940hfeb/at572d940hfeb.c b/board/atmel/at572d940hfeb/at572d940hfeb.c
new file mode 100644
index 0000000..68a9e24
--- /dev/null
+++ b/board/atmel/at572d940hfeb/at572d940hfeb.c
@@ -0,0 +1,267 @@
+/* (C) 2008 Copyright Atmel Corporation 
+ *
+ * Antonio R. Costa <antonio.costa  <at> atmel.com>
+ *                  <costa.antonior <at> gmail.com>
+ * 
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop <at> leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.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/at572d940hf.h>
+#include <asm/arch/at572d940hf_matrix.h>
+#include <asm/arch/at572d940hf_mc.h>
+#include <asm/arch/at91_pmc.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/io.h>
+#include <asm/arch/at91_aic.h>
+#include <asm/arch/interrupts.h>
+#if defined(CONFIG_RESET_PHY_R) && defined(CONFIG_MACB)
+#include <net.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* ------------------------------------------------------------------------- */
+/*
+ * Miscelaneous platform dependent initialisations
+ */
+
+static void AT572D940HFEB_serial_hw_init(void)
+{
+#ifdef CONFIG_USART0
+	at91_set_A_periph(AT91_PIN_PA8, 1);		/* TXD0 */
+	at91_set_A_periph(AT91_PIN_PA7, 0);		/* RXD0 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US0);
+#endif
+
+#ifdef CONFIG_USART1
+	at91_set_A_periph(AT91_PIN_PC10, 1);		/* TXD1 */
+	at91_set_A_periph(AT91_PIN_PC9, 0);		/* RXD1 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US1);
+#endif
+
+#ifdef CONFIG_USART2
+	at91_set_A_periph(AT91_PIN_PC15, 1);		/* TXD2 */
+	at91_set_A_periph(AT91_PIN_PC14, 0);		/* RXD2 */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_US2);
+#endif
+
+#ifdef CONFIG_USART3	/* DBGU */
+	at91_set_A_periph(AT91_PIN_PC30, 0);		/* DRXD */
+	at91_set_A_periph(AT91_PIN_PC31, 1);		/* DTXD */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
+#endif
+}
+
+#ifdef CONFIG_CMD_NAND
+static void AT572D940HFEB_nand_hw_init(void)
+{
+	unsigned long csa;
+
+	/* Enable CS3 */
+	csa = at91_sys_read(AT91_MATRIX_EBICSA);
+	at91_sys_write(AT91_MATRIX_EBICSA,
+		       csa | AT91_MATRIX_CS3A_SMC_SMARTMEDIA);
+
+	/* Configure SMC CS3 for NAND/SmartMedia */
+	at91_sys_write(AT91_SMC_SETUP(3),
+		       AT91_SMC_NWESETUP_(0) | AT91_SMC_NCS_WRSETUP_(0) |
+		       AT91_SMC_NRDSETUP_(0) | AT91_SMC_NCS_RDSETUP_(0));
+	at91_sys_write(AT91_SMC_PULSE(3),
+		       AT91_SMC_NWEPULSE_(3) | AT91_SMC_NCS_WRPULSE_(3) |
+		       AT91_SMC_NRDPULSE_(3) | AT91_SMC_NCS_RDPULSE_(3));
+	at91_sys_write(AT91_SMC_CYCLE(3),
+		       AT91_SMC_NWECYCLE_(5) | AT91_SMC_NRDCYCLE_(5));
+	at91_sys_write(AT91_SMC_MODE(3),
+		       AT91_SMC_READMODE | AT91_SMC_WRITEMODE |
+		       AT91_SMC_EXNWMODE_DISABLE |
+		       AT91_SMC_DBW_8 | AT91_SMC_TDF_(2));
+
+	at91_sys_write(AT91_PMC_PCER, 1 << AT572D940HF_ID_PIOC);
+
+	/* Configure RDY/BSY */
+	at91_set_gpio_input(AT91_PIN_PC16, 1);
+
+	/* Enable NandFlash */
+	/* By DIP switch on AT572D940HFEB */ 
+	at91_set_gpio_output(AT91_PIN_PC14, 1);
+}
+#endif
+
+#ifdef CONFIG_HAS_DATAFLASH
+static void AT572D940HFEB_spi_hw_init(void)
+{
+	at91_set_A_periph(AT91_PIN_PA3, 0);	/* SPI0_NPCS0 */
+	at91_set_A_periph(AT91_PIN_PA4, 0);	/* SPI0_NPCS1 */
+
+	at91_set_A_periph(AT91_PIN_PA0, 0);	/* SPI0_MISO */
+	at91_set_A_periph(AT91_PIN_PA1, 0);	/* SPI0_MOSI */
+	at91_set_A_periph(AT91_PIN_PA2, 0);	/* SPI0_SPCK */
+
+	/* Enable clock */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT572D940HF_ID_SPI0);
+}
+#endif
+
+#ifdef CONFIG_MACB
+static void AT572D940HFEB_macb_hw_init(void)
+{
+	/* Enable clock */
+	at91_sys_write(AT91_PMC_PCER, 1 << AT572D940HF_ID_EMAC);
+
+	/* Need to reset PHY -> 500ms reset */
+#if 0
+	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
+				     (AT91_RSTC_ERSTL & (0x0D << 8)) |
+				     AT91_RSTC_URSTEN);
+
+	at91_sys_write(AT91_RSTC_CR, AT91_RSTC_KEY | AT91_RSTC_EXTRST);
+
+	/* Wait for end hardware reset */
+	while (!(at91_sys_read(AT91_RSTC_SR) & AT91_RSTC_NRSTL));
+
+	/* Restore NRST value */
+	at91_sys_write(AT91_RSTC_MR, AT91_RSTC_KEY |
+				     (AT91_RSTC_ERSTL & (0x0 << 8)) |
+				     AT91_RSTC_URSTEN);
+#endif
+
+	at91_set_A_periph(AT91_PIN_PA16, 0);	/* ETXCK_EREFCK */
+	at91_set_A_periph(AT91_PIN_PA17, 0);	/* ERXDV */
+	at91_set_A_periph(AT91_PIN_PA18, 0);	/* ERX0 */
+	at91_set_A_periph(AT91_PIN_PA19, 0);	/* ERX1 */
+	at91_set_A_periph(AT91_PIN_PA20, 0);	/* ERXER */
+	at91_set_A_periph(AT91_PIN_PA23, 0);	/* ETXEN */
+	at91_set_A_periph(AT91_PIN_PA21, 0);	/* ETX0 */
+	at91_set_A_periph(AT91_PIN_PA22, 0);	/* ETX1 */
+	at91_set_A_periph(AT91_PIN_PA13, 0);	/* EMDIO */
+	at91_set_A_periph(AT91_PIN_PA14, 0);	/* EMDC */
+	at91_set_A_periph(AT91_PIN_PA15, 0);	/* EFCE100 */
+}
+#endif
+
+#ifdef CONFIG_MMC
+static void AT572D940HFEB_mci_hw_init(void)
+{
+	at91_sys_write(AT91_PMC_PCER, (1 << AT572D940HF_ID_MCI));
+	
+	at91_set_A_periph(AT91_PIN_PC22,0);
+	at91_set_A_periph(AT91_PIN_PC23,0);
+	at91_set_A_periph(AT91_PIN_PC24,0);
+	at91_set_A_periph(AT91_PIN_PC25,0);
+	at91_set_A_periph(AT91_PIN_PC26,0);
+	at91_set_A_periph(AT91_PIN_PC27,0);
+}
+#endif
+
+#ifdef CONFIG_USBH
+static void AT572D940HFEB_usbh_hw_init(void)
+{
+	at91_sys_write(AT91_PMC_PCER, (1 << AT572D940HF_ID_UHP));
+	at91_sys_write(AT91_PMC_SCER, AT572D940HF_PMC_UHP);
+}
+
+int rstc_init(void)
+{
+	/* Reads the SR to clean from
+	 * previous resets
+	 */
+	at91_sys_read(AT91_RSTC_SR);
+	
+	/* Disble the USR_RST line,
+	 * enable USR_RST_INT and
+	 * sets the EXT_RST length to 2^14
+	 * (500ms needed by the phy)
+	 */
+	at91_sys_write(AT91_RSTC_MR, (0xa5<<24) | (13<<8) | AT91_RSTC_URSTIEN);
+	return 0;
+}
+
+int board_init(void)
+{
+
+	/* Init the reset controller */
+	rstc_init();
+
+	/* Init interrupts */
+	interrupts_init();
+
+	/* Enable Ctrlc */
+	console_init_f();
+
+	/* arch number of AT572D940HFEB-Board */
+	gd->bd->bi_arch_number = MACH_TYPE_AT572D940HFEB;
+	/* adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	AT572D940HFEB_serial_hw_init();
+
+#ifdef CONFIG_CMD_NAND
+	AT572D940HFEB_nand_hw_init();
+#endif
+
+#ifdef CONFIG_HAS_DATAFLASH
+	AT572D940HFEB_spi_hw_init();
+#endif
+
+#ifdef CONFIG_MACB
+	AT572D940HFEB_macb_hw_init();
+#endif
+
+#ifdef CONFIG_MMC
+	AT572D940HFEB_mci_hw_init();
+#endif
+
+#ifdef CONFIG_USBH
+	AT572D940HFEB_usbh_hw_init();
+#endif	
+
+#endif
+	gd->flags |= GD_FLG_RELOC;
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	gd->bd->bi_dram[0].start = PHYS_SDRAM;
+	gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
+	return 0;
+}
+
+#ifdef CONFIG_CMD_NET 
+#ifdef CONFIG_RESET_PHY_R
+void reset_phy(void)
+{
+#ifdef CONFIG_MACB
+	/*
+	 * Initialize ethernet HW addr prior to starting Linux,
+	 * needed for nfsroot
+	 */
+	eth_init(gd->bd);
+#endif /* CONFIG_MACB */
+}
+#endif /* CONFIG_RESET_PHY_R */
+
+#endif /* CONFIG_CMD_NET */
diff --git a/board/atmel/at572d940hfeb/config.mk b/board/atmel/at572d940hfeb/config.mk
new file mode 100644
index 0000000..ff2cfd1
--- /dev/null
+++ b/board/atmel/at572d940hfeb/config.mk
@@ -0,0 +1 @@
+TEXT_BASE = 0x23f00000
diff --git a/board/atmel/at572d940hfeb/flash.c b/board/atmel/at572d940hfeb/flash.c
new file mode 100644
index 0000000..0d06dae
--- /dev/null
+++ b/board/atmel/at572d940hfeb/flash.c
@@ -0,0 +1,509 @@
+/*
+ * (C) Copyright 2002
+ * Lineo, Inc. <www.lineo.com>
+ * Bernhard Kuhn <bkuhn at lineo.com>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu at sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+ulong myflush(void);
+
+
+/* Flash Organization Structure */
+typedef struct OrgDef
+{
+	unsigned int sector_number;
+	unsigned int sector_size;
+} OrgDef;
+
+
+/* Flash Organizations */
+
+OrgDef OrgAT49BV642D[] =
+{
+	{  8,   4*1024 },
+	{ 58,  32*1024 },
+};
+
+OrgDef OrgAT49BV16x4[] =
+{
+	{  8,  8*1024 },	/*   8 *  8 kBytes sectors */
+	{  2, 32*1024 },	/*   2 * 32 kBytes sectors */
+	{ 30, 64*1024 },	/*  30 * 64 kBytes sectors */
+};
+
+OrgDef OrgAT49BV16x4A[] =
+{
+	{  8,  8*1024 },	/*   8 *  8 kBytes sectors */
+	{ 31, 64*1024 },	/*  31 * 64 kBytes sectors */
+};
+
+OrgDef OrgAT49BV6416[] =
+{
+	{   8,  8*1024 },	/*   8 *  8 kBytes sectors */
+	{ 127, 64*1024 },	/* 127 * 64 kBytes sectors */
+};
+
+flash_info_t    flash_info[CFG_MAX_FLASH_BANKS];
+
+/* AT49BV1614A Codes */
+#define FLASH_CODE1		0xAA
+#define FLASH_CODE2		0x55
+#define ID_IN_CODE		0x90
+#define ID_OUT_CODE		0xF0
+
+
+#define CMD_READ_ARRAY		0x00F0
+#define CMD_UNLOCK1		0x00AA
+#define CMD_UNLOCK2		0x0055
+#define CMD_ERASE_SETUP		0x0080
+#define CMD_ERASE_CONFIRM	0x0030
+#define CMD_PROGRAM		0x00A0
+#define CMD_UNLOCK_BYPASS	0x0020
+#define CMD_SECTOR_UNLOCK	0x0070
+
+#define MEM_FLASH_ADDR1		(*(volatile u16 *)(CFG_FLASH_BASE + (0x00005555<<1)))
+#define MEM_FLASH_ADDR2		(*(volatile u16 *)(CFG_FLASH_BASE + (0x00002AAA<<1)))
+
+#define BIT_ERASE_DONE		0x0080
+#define BIT_RDY_MASK		0x0080
+#define BIT_PROGRAM_ERROR	0x0020
+#define BIT_TIMEOUT		0x80000000 /* our flag */
+
+#define READY 1
+#define ERR   2
+#define TMO   4
+
+/*-----------------------------------------------------------------------
+ */
+void flash_identification (flash_info_t * info)
+{
+	volatile u16 manuf_code, device_code, add_device_code;
+
+	MEM_FLASH_ADDR1 = FLASH_CODE1;
+	MEM_FLASH_ADDR2 = FLASH_CODE2;
+	MEM_FLASH_ADDR1 = ID_IN_CODE;
+
+	manuf_code = *(volatile u16 *) CFG_FLASH_BASE;
+	device_code = *(volatile u16 *) (CFG_FLASH_BASE + 2);
+	add_device_code = *(volatile u16 *) (CFG_FLASH_BASE + (3 << 1));
+
+	MEM_FLASH_ADDR1 = FLASH_CODE1;
+	MEM_FLASH_ADDR2 = FLASH_CODE2;
+	MEM_FLASH_ADDR1 = ID_OUT_CODE;
+
+	/* Vendor type */
+	info->flash_id = ATM_MANUFACT & FLASH_VENDMASK;
+	printf ("Atmel: ");
+
+	if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
+
+		if ((add_device_code & FLASH_TYPEMASK) ==
+			(ATM_ID_BV1614A & FLASH_TYPEMASK)) {
+			info->flash_id |= ATM_ID_BV1614A & FLASH_TYPEMASK;
+			printf ("AT49BV1614A (16Mbit)\n");
+		} else {				/* AT49BV1614 Flash */
+			info->flash_id |= ATM_ID_BV1614 & FLASH_TYPEMASK;
+			printf ("AT49BV1614 (16Mbit)\n");
+		}
+
+	} else if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV6416 & FLASH_TYPEMASK)) {
+		info->flash_id |= ATM_ID_BV6416 & FLASH_TYPEMASK;
+		printf ("AT49BV6416 (64Mbit)\n");
+	}
+}
+
+ushort flash_number_sector(OrgDef *pOrgDef, unsigned int nb_blocks)
+{
+	int i, nb_sectors = 0;
+
+	for (i=0; i<nb_blocks; i++){
+		nb_sectors += pOrgDef[i].sector_number;
+	}
+
+	return nb_sectors;
+}
+
+void flash_unlock_sector(flash_info_t * info, unsigned int sector)
+{
+	volatile u16 *addr = (volatile u16 *) (info->start[sector]);
+
+	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+	*addr = CMD_SECTOR_UNLOCK;
+}
+
+
+ulong flash_init (void)
+{
+	int i, j, k;
+	unsigned int flash_nb_blocks, sector;
+	unsigned int start_address;
+	OrgDef *pOrgDef;
+
+	ulong size = 0;
+
+	for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
+		ulong flashbase = 0;
+
+		flash_identification (&flash_info[i]);
+
+		if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
+			(ATM_ID_BV1614 & FLASH_TYPEMASK)) {
+
+			pOrgDef = OrgAT49BV16x4;
+			flash_nb_blocks = sizeof (OrgAT49BV16x4) / sizeof (OrgDef);
+		} else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
+			(ATM_ID_BV1614A & FLASH_TYPEMASK)){	/* AT49BV1614A Flash */
+
+			pOrgDef = OrgAT49BV16x4A;
+			flash_nb_blocks = sizeof (OrgAT49BV16x4A) / sizeof (OrgDef);
+		} else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
+			(ATM_ID_BV6416 & FLASH_TYPEMASK)){	/* AT49BV6416 Flash */
+
+			pOrgDef = OrgAT49BV6416;
+			flash_nb_blocks = sizeof (OrgAT49BV6416) / sizeof (OrgDef);
+		} else {
+			flash_nb_blocks = 0;
+			pOrgDef = OrgAT49BV16x4;
+		}
+
+		flash_info[i].sector_count = flash_number_sector(pOrgDef, flash_nb_blocks);
+		memset (flash_info[i].protect, 0, flash_info[i].sector_count);
+
+		if (i == 0)
+			flashbase = PHYS_FLASH_1;
+		else
+			panic ("configured too many flash banks!\n");
+
+		sector = 0;
+		start_address = flashbase;
+		flash_info[i].size = 0;
+
+		for (j = 0; j < flash_nb_blocks; j++) {
+			for (k = 0; k < pOrgDef[j].sector_number; k++) {
+				flash_info[i].start[sector++] = start_address;
+				start_address += pOrgDef[j].sector_size;
+				flash_info[i].size += pOrgDef[j].sector_size;
+			}
+		}
+
+		size += flash_info[i].size;
+
+		if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
+			(ATM_ID_BV6416 & FLASH_TYPEMASK)){	/* AT49BV6416 Flash */
+
+			/* Unlock all sectors at reset */
+			for (j=0; j<flash_info[i].sector_count; j++){
+				flash_unlock_sector(&flash_info[i], j);
+			}
+		}
+	}
+
+	/* Protect binary boot image */
+	flash_protect (FLAG_PROTECT_SET,
+		       CFG_FLASH_BASE,
+		       CFG_FLASH_BASE + CFG_BOOT_SIZE - 1, &flash_info[0]);
+
+	/* Protect environment variables */
+	flash_protect (FLAG_PROTECT_SET,
+		       CFG_ENV_ADDR,
+		       CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+
+	/* Protect U-Boot gzipped image */
+	flash_protect (FLAG_PROTECT_SET,
+		       CFG_U_BOOT_BASE,
+		       CFG_U_BOOT_BASE + CFG_U_BOOT_SIZE - 1, &flash_info[0]);
+
+	return size;
+}
+
+/*-----------------------------------------------------------------------
+ */
+void flash_print_info (flash_info_t * info)
+{
+	int i;
+
+	switch (info->flash_id & FLASH_VENDMASK) {
+	case (ATM_MANUFACT & FLASH_VENDMASK):
+		printf ("Atmel: ");
+		break;
+	default:
+		printf ("Unknown Vendor ");
+		break;
+	}
+
+	switch (info->flash_id & FLASH_TYPEMASK) {
+	case (ATM_ID_BV1614 & FLASH_TYPEMASK):
+		printf ("AT49BV1614 (16Mbit)\n");
+		break;
+	case (ATM_ID_BV1614A & FLASH_TYPEMASK):
+		printf ("AT49BV1614A (16Mbit)\n");
+		break;
+	case (ATM_ID_BV6416 & FLASH_TYPEMASK):
+		printf ("AT49BV6416 (64Mbit)\n");
+		break;
+	default:
+		printf ("Unknown Chip Type\n");
+		return;
+	}
+
+	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");
+}
+
+/*-----------------------------------------------------------------------
+ */
+
+int flash_erase (flash_info_t * info, int s_first, int s_last)
+{
+	ulong result;
+	int iflag, cflag, prot, sect;
+	int rc = ERR_OK;
+	int chip1;
+
+	/* first look for protection bits */
+
+	if (info->flash_id == FLASH_UNKNOWN)
+		return ERR_UNKNOWN_FLASH_TYPE;
+
+	if ((s_first < 0) || (s_first > s_last)) {
+		return ERR_INVAL;
+	}
+
+	if ((info->flash_id & FLASH_VENDMASK) !=
+		(ATM_MANUFACT & FLASH_VENDMASK)) {
+		return ERR_UNKNOWN_FLASH_VENDOR;
+	}
+
+	prot = 0;
+	for (sect = s_first; sect <= s_last; ++sect) {
+		if (info->protect[sect]) {
+			prot++;
+		}
+	}
+	if (prot)
+		return ERR_PROTECTED;
+
+	/*
+	 * Disable interrupts which might cause a timeout
+	 * here. Remember that our exception vectors are
+	 * at address 0 in the flash, and we don't want a
+	 * (ticker) exception to happen while the flash
+	 * chip is in programming mode.
+	 */
+	cflag = icache_status ();
+	icache_disable ();
+	iflag = disable_interrupts ();
+
+	/* Start erase on unprotected sectors */
+	for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
+		printf ("Erasing sector %2d ... ", sect);
+
+		/* arm simple, non interrupt dependent timer */
+		reset_timer_masked ();
+
+		if (info->protect[sect] == 0) {	/* not protected */
+			volatile u16 *addr = (volatile u16 *) (info->start[sect]);
+
+			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+			MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
+
+			MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+			MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+			*addr = CMD_ERASE_CONFIRM;
+
+			/* wait until flash is ready */
+			chip1 = 0;
+
+			do {
+				result = *addr;
+
+				/* check timeout */
+				if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+					MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+					chip1 = TMO;
+					break;
+				}
+
+				if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
+					chip1 = READY;
+
+			} while (!chip1);
+
+			MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
+
+			if (chip1 == ERR) {
+				rc = ERR_PROG_ERROR;
+				goto outahere;
+			}
+			if (chip1 == TMO) {
+				rc = ERR_TIMOUT;
+				goto outahere;
+			}
+
+			printf ("ok.\n");
+		} else {			/* it was protected */
+			printf ("protected!\n");
+		}
+	}
+
+	if (ctrlc ())
+		printf ("User Interrupt!\n");
+
+outahere:
+	/* allow flash to settle - wait 10 ms */
+	udelay_masked (10000);
+
+	if (iflag)
+		enable_interrupts ();
+
+	if (cflag)
+		icache_enable ();
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash
+ */
+
+static int write_word (flash_info_t * info, ulong dest, ulong data)
+{
+	volatile u16 *addr = (volatile u16 *) dest;
+	ulong result;
+	int rc = ERR_OK;
+	int cflag, iflag;
+	int chip1;
+
+	/*
+	 * Check if Flash is (sufficiently) erased
+	 */
+	result = *addr;
+	if ((result & data) != data)
+		return ERR_NOT_ERASED;
+
+	/*
+	 * Disable interrupts which might cause a timeout
+	 * here. Remember that our exception vectors are
+	 * at address 0 in the flash, and we don't want a
+	 * (ticker) exception to happen while the flash
+	 * chip is in programming mode.
+	 */
+	cflag = icache_status ();
+	icache_disable ();
+	iflag = disable_interrupts ();
+
+	MEM_FLASH_ADDR1 = CMD_UNLOCK1;
+	MEM_FLASH_ADDR2 = CMD_UNLOCK2;
+	MEM_FLASH_ADDR1 = CMD_PROGRAM;
+	*addr = data;
+
+	/* arm simple, non interrupt dependent timer */
+	reset_timer_masked ();
+
+	/* wait until flash is ready */
+	chip1 = 0;
+	do {
+		result = *addr;
+
+		/* check timeout */
+		if (get_timer_masked () > CFG_FLASH_ERASE_TOUT) {
+			chip1 = ERR | TMO;
+			break;
+		}
+		if (!chip1 && ((result & 0x80) == (data & 0x80)))
+			chip1 = READY;
+
+	} while (!chip1);
+
+	*addr = CMD_READ_ARRAY;
+
+	if (chip1 == ERR || *addr != data)
+		rc = ERR_PROG_ERROR;
+
+	if (iflag)
+		enable_interrupts ();
+
+	if (cflag)
+		icache_enable ();
+
+	return rc;
+}
+
+/*-----------------------------------------------------------------------
+ * Copy memory to flash.
+ */
+
+int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
+{
+	ulong wp, data;
+	int rc;
+
+	if (addr & 1) {
+		printf ("unaligned destination not supported\n");
+		return ERR_ALIGN;
+	};
+
+	if ((int) src & 1) {
+		printf ("unaligned source not supported\n");
+		return ERR_ALIGN;
+	};
+
+	wp = addr;
+
+	while (cnt >= 2) {
+		data = *((volatile u16 *) src);
+		if ((rc = write_word (info, wp, data)) != 0) {
+			return (rc);
+		}
+		src += 2;
+		wp += 2;
+		cnt -= 2;
+	}
+
+	if (cnt == 1) {
+		data = (*((volatile u8 *) src)) | (*((volatile u8 *) (wp + 1)) <<
+										   8);
+		if ((rc = write_word (info, wp, data)) != 0) {
+			return (rc);
+		}
+		src += 1;
+		wp += 1;
+		cnt -= 1;
+	};
+
+	return ERR_OK;
+}
diff --git a/board/atmel/at572d940hfeb/interrupts.c b/board/atmel/at572d940hfeb/interrupts.c
new file mode 100644
index 0000000..c96e75e
--- /dev/null
+++ b/board/atmel/at572d940hfeb/interrupts.c
@@ -0,0 +1,81 @@
+/*
+ * board/atmel/at572d940hfeb/interrupts.c
+ * Copyright 2008 (C) ATMEL
+ * Antonio R. Costa <antonio.costa  <at> atmel.com>
+ *                  <costa.antonior <at> gmail.com> 
+ *
+ * Advanced Interrupt Controller (AIC).
+ * Based on AT572D940HF datasheet.
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <asm/arch/at572d940hf.h>
+#include <asm/arch/io.h>
+#include <asm/arch/at91_rstc.h>
+#include <asm/arch/at91_aic.h>
+#include <asm/arch/interrupts.h>
+
+irq_handler_t handler_reset(void)
+{
+	unsigned long rstc_sr=0;
+
+	rstc_sr = at91_sys_read(AT91_RSTC_SR);
+	if(rstc_sr & AT91_RSTC_URSTS) {
+		while(!(at91_sys_read(AT91_RSTC_SR) & (1<<16)));
+		reset_cpu(1);
+	};
+}
+
+irq_handler_t handler_ext1(void)
+{
+	puts("--- EXT1 IRQ ---\n");
+}
+
+
+int reset_irqs(void) {
+	unsigned long ul = 0;
+	volatile unsigned long * psrc = _armboot_start;
+	volatile unsigned long * pdest = 0x0;
+
+	// Relocates U-Boot ARM IRQ vectors to 0
+	// This is an ugly way to do it.
+	// More support must be offered by start.S
+	// on symbols and macros performing partial relocation
+
+	while(ul++ < 16)
+		*pdest++ = *psrc++;
+
+
+	// Reset IRQ vectors
+	for(ul=0;ul<32;ul++)
+		RESET_IRQ_HANDLER(ul);
+	return 0;
+}
+
+int interrupts_init(void)
+{
+	reset_irqs();
+	SET_IRQ_HANDLER(1 ,0x27,handler_reset);
+	SET_IRQ_HANDLER(30,0x27,handler_ext1);
+	return 0;
+}
+
+
+void do_irq(struct pt_regs* pregs) {
+
+	unsigned long int ivr = AIC_REG(AIC_IVR);
+	unsigned long int isr = AIC_REG(AIC_ISR);
+	void (*irq_handler)(unsigned long int) = (void(*)(unsigned long int)) ivr;
+
+	irq_handler(isr);
+	
+	/* Acknowledges irq */
+	IRQ_ACKNOWLEDGE(ivr);
+
+	return;
+};
diff --git a/board/atmel/at572d940hfeb/nand.c b/board/atmel/at572d940hfeb/nand.c
new file mode 100644
index 0000000..0f8dcb9
--- /dev/null
+++ b/board/atmel/at572d940hfeb/nand.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop <at> leadtechdesign.com>
+ * Lead Tech Design <www.leadtechdesign.com>
+ *
+ * (C) Copyright 2006 ATMEL Rousset, Lacressonniere Nicolas
+ *
+ * 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/at572d940hf.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/at91_pio.h>
+
+#include <nand.h>
+
+/*
+ *	hardware specific access to control-lines
+ */
+#define	MASK_ALE	(1 << 21)	/* our ALE is AD21 */
+#define	MASK_CLE	(1 << 22)	/* our CLE is AD22 */
+
+static void at91sam9260ek_nand_hwcontrol(struct mtd_info *mtd, int cmd)
+{
+	struct nand_chip *this = mtd->priv;
+	ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
+
+	IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
+	switch (cmd) {
+	case NAND_CTL_SETCLE:
+		IO_ADDR_W |= MASK_CLE;
+		break;
+	case NAND_CTL_SETALE:
+		IO_ADDR_W |= MASK_ALE;
+		break;
+	case NAND_CTL_CLRNCE:
+		at91_set_gpio_value(AT91_PIN_PC14, 1);
+		break;
+	case NAND_CTL_SETNCE:
+		at91_set_gpio_value(AT91_PIN_PC14, 0);
+		break;
+	}
+	this->IO_ADDR_W = (void *) IO_ADDR_W;
+}
+
+static int at91sam9260ek_nand_ready(struct mtd_info *mtd)
+{
+	return at91_get_gpio_value(AT91_PIN_PC13);
+}
+
+int board_nand_init(struct nand_chip *nand)
+{
+	nand->eccmode = NAND_ECC_SOFT;
+	nand->hwcontrol = at91sam9260ek_nand_hwcontrol;
+	nand->dev_ready = at91sam9260ek_nand_ready;
+	nand->chip_delay = 20;
+
+	return 0;
+}
diff --git a/board/atmel/at572d940hfeb/partition.c b/board/atmel/at572d940hfeb/partition.c
new file mode 100644
index 0000000..389fb2c
--- /dev/null
+++ b/board/atmel/at572d940hfeb/partition.c
@@ -0,0 +1,38 @@
+/*
+ *
+ * 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 <config.h>
+#include <asm/hardware.h>
+#include <dataflash.h>
+
+AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
+
+struct dataflash_addr cs[CFG_MAX_DATAFLASH_BANKS] = {
+	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
+	{CFG_DATAFLASH_LOGIC_ADDR_CS1, 1}
+};
+
+/*define the area offsets*/
+dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
+	{0x00000000, 0x000041FF, FLAG_PROTECT_SET,   0, "Bootstrap"},
+	{0x00004200, 0x000083FF, FLAG_PROTECT_CLEAR, 0, "Environment"},
+	{0x00008400, 0x00041FFF, FLAG_PROTECT_SET,   0, "U-Boot"},
+	{0x00042000, 0x00251FFF, FLAG_PROTECT_CLEAR, 0,	"Kernel"},
+	{0x00252000, 0xFFFFFFFF, FLAG_PROTECT_CLEAR, 0,	"FS"},
+};
diff --git a/board/atmel/at572d940hfeb/u-boot.lds b/board/atmel/at572d940hfeb/u-boot.lds
new file mode 100644
index 0000000..05a6d83
--- /dev/null
+++ b/board/atmel/at572d940hfeb/u-boot.lds
@@ -0,0 +1,57 @@
+/*
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <gj <at> 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/arm926ejs/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 = .;
+}
-- 
1.5.4.3





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