/* * (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/at91cap9.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 at91cap9adk_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_PD15, 1); break; case NAND_CTL_SETNCE: at91_set_gpio_value(AT91_PIN_PD15, 0); break; } this->IO_ADDR_W = (void *) IO_ADDR_W; } int board_nand_init(struct nand_chip *nand) { nand->eccmode = NAND_ECC_SOFT; nand->hwcontrol = at91cap9adk_nand_hwcontrol; nand->chip_delay = 20; return 0; }