blob: e5b7f3346e1e8a22456eb316f6bf7aceb9417ee3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
/*
* (C) Copyright 2005 2N TELEKOMUNIKACE, Ladislav Michl
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#if (CONFIG_COMMANDS & CFG_CMD_NAND)
#include <nand.h>
/*
* hardware specific access to control-lines
*/
#define MASK_CLE 0x02
#define MASK_ALE 0x04
static void netstar_nand_hwcontrol(struct mtd_info *mtd, int cmd)
{
struct nand_chip *this = mtd->priv;
ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
IO_ADDR_W &= ~(MASK_ALE|MASK_CLE);
switch (cmd) {
case NAND_CTL_SETCLE: IO_ADDR_W |= MASK_CLE; break;
case NAND_CTL_SETALE: IO_ADDR_W |= MASK_ALE; break;
}
this->IO_ADDR_W = (void *) IO_ADDR_W;
}
/*
* chip R/B detection
*/
static int netstar_nand_ready(struct mtd_info *mtd)
{
return (*(volatile ushort *)GPIO_DATA_INPUT_REG) & 0x02;
}
void board_nand_init(struct nand_chip *nand)
{
nand->options = NAND_SAMSUNG_LP_OPTIONS;
nand->eccmode = NAND_ECC_SOFT;
nand->hwcontrol = netstar_nand_hwcontrol;
/* nand->dev_ready = netstar_nand_ready; */
nand->chip_delay = 18;
}
#endif
|
