AT91SAM9261EK support

This patch adds support for the AT91SAM9261 chip and the AT91SAM9261EK
board.

Signed-off-by: Stelian Pop <stelian@popies.net>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 79 insertions, 0 deletions

diff --git a/board/atmel/at91sam9261ek/nand.c b/board/atmel/at91sam9261ek/nand.c
new file mode 100644
index 0000000..35b26db
--- /dev/null
+++ b/board/atmel/at91sam9261ek/nand.c
@@ -0,0 +1,79 @@
+/*
+ * (C) Copyright 2007-2008
+ * Stelian Pop <stelian.pop@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/at91sam9261.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 << 22)	/* our ALE is AD22 */
+#define	MASK_CLE	(1 << 21)	/* our CLE is AD21 */
+
+static void at91sam9261ek_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 at91sam9261ek_nand_ready(struct mtd_info *mtd)
+{
+	return at91_get_gpio_value(AT91_PIN_PC15);
+}
+
+int board_nand_init(struct nand_chip *nand)
+{
+	nand->eccmode = NAND_ECC_SOFT;
+#ifdef CFG_NAND_DBW_16
+	nand->options = NAND_BUSWIDTH_16;
+#endif
+	nand->hwcontrol = at91sam9261ek_nand_hwcontrol;
+	nand->dev_ready = at91sam9261ek_nand_ready;
+	nand->chip_delay = 20;
+
+	return 0;
+}