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ac7eb8a3 WD |
1 | /* |
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 | ||
3fe00109 | 25 | #if defined(CONFIG_CMD_NAND) |
ac7eb8a3 WD |
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 | ||
35 | static 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 | */ | |
d52fb7e3 | 51 | /*** |
ac7eb8a3 WD |
52 | static int netstar_nand_ready(struct mtd_info *mtd) |
53 | { | |
54 | return (*(volatile ushort *)GPIO_DATA_INPUT_REG) & 0x02; | |
55 | } | |
d52fb7e3 | 56 | ***/ |
ac7eb8a3 | 57 | |
fa230445 | 58 | int board_nand_init(struct nand_chip *nand) |
ac7eb8a3 | 59 | { |
b9365a26 | 60 | nand->options = NAND_SAMSUNG_LP_OPTIONS; |
ac7eb8a3 | 61 | nand->eccmode = NAND_ECC_SOFT; |
b9365a26 | 62 | nand->hwcontrol = netstar_nand_hwcontrol; |
ac7eb8a3 WD |
63 | /* nand->dev_ready = netstar_nand_ready; */ |
64 | nand->chip_delay = 18; | |
fa230445 | 65 | return 0; |
ac7eb8a3 WD |
66 | } |
67 | #endif |