11ac559d4STsiChungLiew /* 21ac559d4STsiChungLiew * (C) Copyright 2000-2003 31ac559d4STsiChungLiew * Wolfgang Denk, DENX Software Engineering, wd@denx.de. 41ac559d4STsiChungLiew * 5*aa0d99fcSAlison Wang * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc. 61ac559d4STsiChungLiew * TsiChung Liew (Tsi-Chung.Liew@freescale.com) 71ac559d4STsiChungLiew * 81ac559d4STsiChungLiew * See file CREDITS for list of people who contributed to this 91ac559d4STsiChungLiew * project. 101ac559d4STsiChungLiew * 111ac559d4STsiChungLiew * This program is free software; you can redistribute it and/or 121ac559d4STsiChungLiew * modify it under the terms of the GNU General Public License as 131ac559d4STsiChungLiew * published by the Free Software Foundation; either version 2 of 141ac559d4STsiChungLiew * the License, or (at your option) any later version. 151ac559d4STsiChungLiew * 161ac559d4STsiChungLiew * This program is distributed in the hope that it will be useful, 171ac559d4STsiChungLiew * but WITHOUT ANY WARRANTY; without even the implied warranty of 181ac559d4STsiChungLiew * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 191ac559d4STsiChungLiew * GNU General Public License for more details. 201ac559d4STsiChungLiew * 211ac559d4STsiChungLiew * You should have received a copy of the GNU General Public License 221ac559d4STsiChungLiew * along with this program; if not, write to the Free Software 231ac559d4STsiChungLiew * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 241ac559d4STsiChungLiew * MA 02111-1307 USA 251ac559d4STsiChungLiew */ 261ac559d4STsiChungLiew 271ac559d4STsiChungLiew #include <config.h> 281ac559d4STsiChungLiew #include <common.h> 291ac559d4STsiChungLiew #include <asm/io.h> 301ac559d4STsiChungLiew #include <asm/immap.h> 311ac559d4STsiChungLiew 321ac559d4STsiChungLiew DECLARE_GLOBAL_DATA_PTR; 331ac559d4STsiChungLiew 341ac559d4STsiChungLiew #if defined(CONFIG_CMD_NAND) 351ac559d4STsiChungLiew #include <nand.h> 361ac559d4STsiChungLiew #include <linux/mtd/mtd.h> 371ac559d4STsiChungLiew 381ac559d4STsiChungLiew #define SET_CLE 0x10 391ac559d4STsiChungLiew #define SET_ALE 0x08 401ac559d4STsiChungLiew 41f64cb652SScott Wood static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl) 421ac559d4STsiChungLiew { 431ac559d4STsiChungLiew struct nand_chip *this = mtdinfo->priv; 44e4f69d1bSTsiChung Liew volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR; 451ac559d4STsiChungLiew 46f64cb652SScott Wood if (ctrl & NAND_CTRL_CHANGE) { 47f64cb652SScott Wood ulong IO_ADDR_W = (ulong) this->IO_ADDR_W; 48f64cb652SScott Wood 49e4f69d1bSTsiChung Liew IO_ADDR_W &= ~(SET_ALE | SET_CLE); 50e4f69d1bSTsiChung Liew 51e4f69d1bSTsiChung Liew if (ctrl & NAND_NCE) 529017d932STsiChung Liew *nCE &= 0xFFFB; 539017d932STsiChung Liew else 54e4f69d1bSTsiChung Liew *nCE |= 0x0004; 559017d932STsiChung Liew 56f64cb652SScott Wood if (ctrl & NAND_CLE) 57f64cb652SScott Wood IO_ADDR_W |= SET_CLE; 58f64cb652SScott Wood if (ctrl & NAND_ALE) 59f64cb652SScott Wood IO_ADDR_W |= SET_ALE; 60f64cb652SScott Wood 61f64cb652SScott Wood this->IO_ADDR_W = (void *)IO_ADDR_W; 62f64cb652SScott Wood 631ac559d4STsiChungLiew } 641ac559d4STsiChungLiew 65f64cb652SScott Wood if (cmd != NAND_CMD_NONE) 66f64cb652SScott Wood writeb(cmd, this->IO_ADDR_W); 671ac559d4STsiChungLiew } 681ac559d4STsiChungLiew 691ac559d4STsiChungLiew int board_nand_init(struct nand_chip *nand) 701ac559d4STsiChungLiew { 71*aa0d99fcSAlison Wang gpio_t *gpio = (gpio_t *) MMAP_GPIO; 72*aa0d99fcSAlison Wang fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS; 731ac559d4STsiChungLiew 74*aa0d99fcSAlison Wang clrbits_be32(&fbcs->csmr2, FBCS_CSMR_WP); 751ac559d4STsiChungLiew 76e4f69d1bSTsiChung Liew /* 77e4f69d1bSTsiChung Liew * set up pin configuration - enabled 2nd output buffer's signals 78e4f69d1bSTsiChung Liew * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc) 79e4f69d1bSTsiChung Liew * to use nCE signal 80e4f69d1bSTsiChung Liew */ 81*aa0d99fcSAlison Wang clrbits_8(&gpio->par_timer, GPIO_PAR_TIN3_TIN3); 82*aa0d99fcSAlison Wang setbits_8(&gpio->pddr_timer, 0x08); 83*aa0d99fcSAlison Wang setbits_8(&gpio->ppd_timer, 0x08); 84*aa0d99fcSAlison Wang out_8(&gpio->pclrr_timer, 0); 85*aa0d99fcSAlison Wang out_8(&gpio->podr_timer, 0); 861ac559d4STsiChungLiew 879017d932STsiChung Liew nand->chip_delay = 60; 88f64cb652SScott Wood nand->ecc.mode = NAND_ECC_SOFT; 89f64cb652SScott Wood nand->cmd_ctrl = nand_hwcontrol; 901ac559d4STsiChungLiew 911ac559d4STsiChungLiew return 0; 921ac559d4STsiChungLiew } 931ac559d4STsiChungLiew #endif 94