3 * Gary Jennejohn, DENX Software Engineering GmbH, garyj@denx.de
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #if defined(CONFIG_CMD_NAND)
31 * hardware specific access to control-lines
33 static void quad100hd_hwcontrol(struct mtd_info *mtd, int cmd)
37 gpio_write_bit(CFG_NAND_CLE, 1);
40 gpio_write_bit(CFG_NAND_CLE, 0);
44 gpio_write_bit(CFG_NAND_ALE, 1);
47 gpio_write_bit(CFG_NAND_ALE, 0);
51 gpio_write_bit(CFG_NAND_CE, 0);
54 gpio_write_bit(CFG_NAND_CE, 1);
59 static int quad100hd_nand_ready(struct mtd_info *mtd)
61 return gpio_read_in_bit(CFG_NAND_RDY);
65 * Main initialization routine
67 int board_nand_init(struct nand_chip *nand)
69 /* Set address of hardware control function */
70 nand->hwcontrol = quad100hd_hwcontrol;
71 nand->dev_ready = quad100hd_nand_ready;
72 nand->eccmode = NAND_ECC_SOFT;
73 /* 15 us command delay time */
74 nand->chip_delay = 20;
79 #endif /* CONFIG_CMD_NAND */