| /* |
| * (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/at91sam9260.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; |
| } |