11a33ce65STsiChungLiew /* 21a33ce65STsiChungLiew * (C) Copyright 2000-2003 31a33ce65STsiChungLiew * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 41a33ce65STsiChungLiew * 51a33ce65STsiChungLiew * Copyright (C) 2004-2007 Freescale Semiconductor, Inc. 61a33ce65STsiChungLiew * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 71a33ce65STsiChungLiew * 81a33ce65STsiChungLiew * See file CREDITS for list of people who contributed to this 91a33ce65STsiChungLiew * project. 101a33ce65STsiChungLiew * 111a33ce65STsiChungLiew * This program is free software; you can redistribute it and/or 121a33ce65STsiChungLiew * modify it under the terms of the GNU General Public License as 131a33ce65STsiChungLiew * published by the Free Software Foundation; either version 2 of 141a33ce65STsiChungLiew * the License, or (at your option) any later version. 151a33ce65STsiChungLiew * 161a33ce65STsiChungLiew * This program is distributed in the hope that it will be useful, 171a33ce65STsiChungLiew * but WITHOUT ANY WARRANTY; without even the implied warranty of 181a33ce65STsiChungLiew * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 191a33ce65STsiChungLiew * GNU General Public License for more details. 201a33ce65STsiChungLiew * 211a33ce65STsiChungLiew * You should have received a copy of the GNU General Public License 221a33ce65STsiChungLiew * along with this program; if not, write to the Free Software 231a33ce65STsiChungLiew * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 241a33ce65STsiChungLiew * MA 02111-1307 USA 251a33ce65STsiChungLiew */ 261a33ce65STsiChungLiew 271a33ce65STsiChungLiew #include <config.h> 281a33ce65STsiChungLiew #include <common.h> 291a33ce65STsiChungLiew #include <asm/io.h> 301a33ce65STsiChungLiew #include <asm/immap.h> 311a33ce65STsiChungLiew 321a33ce65STsiChungLiew DECLARE_GLOBAL_DATA_PTR; 331a33ce65STsiChungLiew 34ab77bc54STsiChungLiew #if defined(CONFIG_CMD_NAND) 351a33ce65STsiChungLiew #include <nand.h> 361a33ce65STsiChungLiew #include <linux/mtd/mtd.h> 371a33ce65STsiChungLiew 381a33ce65STsiChungLiew #define SET_CLE 0x10 391a33ce65STsiChungLiew #define SET_ALE 0x08 401a33ce65STsiChungLiew 41*e4f69d1bSTsiChung Liew static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl) 421a33ce65STsiChungLiew { 431a33ce65STsiChungLiew struct nand_chip *this = mtdinfo->priv; 44*e4f69d1bSTsiChung Liew volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR; 451a33ce65STsiChungLiew 46cfa460adSWilliam Juul if (ctrl & NAND_CTRL_CHANGE) { 47*e4f69d1bSTsiChung Liew ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; 48*e4f69d1bSTsiChung Liew 49*e4f69d1bSTsiChung Liew IO_ADDR_W &= ~(SET_ALE | SET_CLE); 50*e4f69d1bSTsiChung Liew *nCE &= 0xFFFB; 51*e4f69d1bSTsiChung Liew 52*e4f69d1bSTsiChung Liew if (ctrl & NAND_NCE) 53*e4f69d1bSTsiChung Liew *nCE |= 0x0004; 54cfa460adSWilliam Juul if (ctrl & NAND_CLE) 55*e4f69d1bSTsiChung Liew IO_ADDR_W |= SET_CLE; 56cfa460adSWilliam Juul if (ctrl & NAND_ALE) 57*e4f69d1bSTsiChung Liew IO_ADDR_W |= SET_ALE; 58*e4f69d1bSTsiChung Liew 59*e4f69d1bSTsiChung Liew this->IO_ADDR_W = (void *)IO_ADDR_W; 601a33ce65STsiChungLiew } 61cfa460adSWilliam Juul 62cfa460adSWilliam Juul if (cmd != NAND_CMD_NONE) 63cfa460adSWilliam Juul writeb(cmd, this->IO_ADDR_W); 641a33ce65STsiChungLiew } 651a33ce65STsiChungLiew 661a33ce65STsiChungLiew int board_nand_init(struct nand_chip *nand) 671a33ce65STsiChungLiew { 681a33ce65STsiChungLiew volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO; 691a33ce65STsiChungLiew 70*e4f69d1bSTsiChung Liew /* 71*e4f69d1bSTsiChung Liew * set up pin configuration - enabled 2nd output buffer's signals 72*e4f69d1bSTsiChung Liew * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc) 73*e4f69d1bSTsiChung Liew * to use nCE signal 74*e4f69d1bSTsiChung Liew */ 751a33ce65STsiChungLiew gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3; 761a33ce65STsiChungLiew gpio->pddr_timer |= 0x08; 771a33ce65STsiChungLiew gpio->ppd_timer |= 0x08; 781a33ce65STsiChungLiew gpio->pclrr_timer = 0; 791a33ce65STsiChungLiew gpio->podr_timer = 0; 801a33ce65STsiChungLiew 811a33ce65STsiChungLiew nand->chip_delay = 50; 82cfa460adSWilliam Juul nand->ecc.mode = NAND_ECC_SOFT; 83cfa460adSWilliam Juul nand->cmd_ctrl = nand_hwcontrol; 841a33ce65STsiChungLiew 851a33ce65STsiChungLiew return 0; 861a33ce65STsiChungLiew } 871a33ce65STsiChungLiew #endif 88