2 * (C) Copyright 2000-2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
6 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #include <asm/immap.h>
32 DECLARE_GLOBAL_DATA_PTR;
34 #if defined(CONFIG_CMD_NAND)
36 #include <linux/mtd/mtd.h>
41 static void nand_hwcontrol(struct mtd_info *mtdinfo, int cmd, unsigned int ctrl)
43 struct nand_chip *this = mtdinfo->priv;
44 volatile u16 *nCE = (u16 *) CONFIG_SYS_LATCH_ADDR;
46 if (ctrl & NAND_CTRL_CHANGE) {
47 ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
49 IO_ADDR_W &= ~(SET_ALE | SET_CLE);
61 this->IO_ADDR_W = (void *)IO_ADDR_W;
65 if (cmd != NAND_CMD_NONE)
66 writeb(cmd, this->IO_ADDR_W);
69 int board_nand_init(struct nand_chip *nand)
71 volatile gpio_t *gpio = (gpio_t *) MMAP_GPIO;
72 volatile fbcs_t *fbcs = (fbcs_t *) MMAP_FBCS;
74 fbcs->csmr2 &= ~FBCS_CSMR_WP;
77 * set up pin configuration - enabled 2nd output buffer's signals
78 * (nand_ngpio - nCE USB1/2_PWR_EN, LATCH_GPIOs, LCD_VEEEN, etc)
81 gpio->par_timer &= ~GPIO_PAR_TIN3_TIN3;
82 gpio->pddr_timer |= 0x08;
83 gpio->ppd_timer |= 0x08;
84 gpio->pclrr_timer = 0;
87 nand->chip_delay = 60;
88 nand->ecc.mode = NAND_ECC_SOFT;
89 nand->cmd_ctrl = nand_hwcontrol;