blob: 78523654eb95316361d16b7172c72bbb3f414fb8 [file] [log] [blame]
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +02001/*
2 * (C) Copyright 2005 2N TELEKOMUNIKACE, Ladislav Michl
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24
25#if (CONFIG_COMMANDS & CFG_CMD_NAND)
26
27#include <nand.h>
28
29/*
30 * hardware specific access to control-lines
31 */
32#define MASK_CLE 0x02
33#define MASK_ALE 0x04
34
35static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd)
36{
37 struct nand_chip *this = mtd->priv;
38 ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
39
40 IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
41 switch (cmd) {
42 case NAND_CTL_SETCLE: IO_ADDR_W |= MASK_CLE; break;
43 case NAND_CTL_SETALE: IO_ADDR_W |= MASK_ALE; break;
44 }
45 this->IO_ADDR_W = (void *) IO_ADDR_W;
46}
47
48/*
49 * chip R/B detection
50 */
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +010051/***
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020052static int netstar_nand_ready(struct mtd_info *mtd)
53{
54 return (*(volatile ushort *)GPIO_DATA_INPUT_REG) & 0x02;
55}
Wolfgang Denkd52fb7e2006-03-11 22:53:33 +010056***/
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020057
Heiko Schocherfa230442006-12-21 17:17:02 +010058int board_nand_init(struct nand_chip *nand)
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020059{
Wolfgang Denkb9365a22006-07-21 11:56:05 +020060 nand->options = NAND_SAMSUNG_LP_OPTIONS;
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020061 nand->eccmode = NAND_ECC_SOFT;
Wolfgang Denkb9365a22006-07-21 11:56:05 +020062 nand->hwcontrol = netstar_nand_hwcontrol;
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020063/* nand->dev_ready = netstar_nand_ready; */
64 nand->chip_delay = 18;
Heiko Schocherfa230442006-12-21 17:17:02 +010065 return 0;
Wolfgang Denkac7eb8a32005-09-14 23:53:32 +020066}
67#endif