| Wolfgang Denk | ac7eb8a | 2005-09-14 23:53:32 +0200 | [diff] [blame] | 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 | |
| 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 | |
| 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 | */ |
| 51 | static int netstar_nand_ready(struct mtd_info *mtd) |
| 52 | { |
| 53 | return (*(volatile ushort *)GPIO_DATA_INPUT_REG) & 0x02; |
| 54 | } |
| 55 | |
| 56 | void board_nand_init(struct nand_chip *nand) |
| 57 | { |
| 58 | nand->options = NAND_SAMSUNG_LP_OPTIONS; |
| 59 | nand->eccmode = NAND_ECC_SOFT; |
| 60 | nand->hwcontrol = netstar_nand_hwcontrol; |
| 61 | /* nand->dev_ready = netstar_nand_ready; */ |
| 62 | nand->chip_delay = 18; |
| 63 | } |
| 64 | #endif |