3 * Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com
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 esd405ep_nand_hwcontrol(struct mtd_info *mtdinfo, int cmd)
37 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CLE);
40 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CLE);
43 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_ALE);
46 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_ALE);
49 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~CFG_NAND_CE);
52 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
59 * read device ready pin
61 static int esd405ep_nand_device_ready(struct mtd_info *mtdinfo)
63 if (in_be32((void *)GPIO0_IR) & CFG_NAND_RDY)
69 int board_nand_init(struct nand_chip *nand)
72 * Set NAND-FLASH GPIO signals to defaults
74 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) & ~(CFG_NAND_CLE | CFG_NAND_ALE));
75 out_be32((void *)GPIO0_OR, in_be32((void *)GPIO0_OR) | CFG_NAND_CE);
78 * Initialize nand_chip structure
80 nand->hwcontrol = esd405ep_nand_hwcontrol;
81 nand->dev_ready = esd405ep_nand_device_ready;
82 nand->eccmode = NAND_ECC_SOFT;
83 nand->chip_delay = NAND_BIG_DELAY_US;
84 nand->options = NAND_SAMSUNG_LP_OPTIONS;