projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| cd84423a MF |
1 | /* |
| 2 | * Genericish driver for memory mapped NAND devices | |
| 3 | * | |
| 4 | * Copyright (c) 2006-2009 Analog Devices Inc. | |
| 5 | * Licensed under the GPL-2 or later. | |
| 6 | */ | |
| 7 | ||
| 8 | /* Your board must implement the following macros: | |
| 9 | * NAND_PLAT_WRITE_CMD(chip, cmd) | |
| 10 | * NAND_PLAT_WRITE_ADR(chip, cmd) | |
| 11 | * NAND_PLAT_INIT() | |
| 12 | * | |
| 13 | * It may also implement the following: | |
| 14 | * NAND_PLAT_DEV_READY(chip) | |
| 15 | */ | |
| 16 | ||
| 17 | #include <common.h> | |
| 18 | #include <asm/io.h> | |
| 19 | ||
| 20 | #include <nand.h> | |
| 21 | ||
| 22 | static void plat_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) | |
| 23 | { | |
| 24 | struct nand_chip *this = mtd->priv; | |
| 25 | ||
| 26 | if (cmd == NAND_CMD_NONE) | |
| 27 | return; | |
| 28 | ||
| 29 | if (ctrl & NAND_CLE) | |
| 30 | NAND_PLAT_WRITE_CMD(this, cmd); | |
| 31 | else | |
| 32 | NAND_PLAT_WRITE_ADR(this, cmd); | |
| 33 | } | |
| 34 | ||
| 35 | #ifdef NAND_PLAT_DEV_READY | |
| 36 | static int plat_dev_ready(struct mtd_info *mtd) | |
| 37 | { | |
| 38 | return NAND_PLAT_DEV_READY((struct nand_chip *)mtd->priv); | |
| 39 | } | |
| 40 | #else | |
| 41 | # define plat_dev_ready NULL | |
| 42 | #endif | |
| 43 | ||
| 44 | int board_nand_init(struct nand_chip *nand) | |
| 45 | { | |
| 46 | NAND_PLAT_INIT(); | |
| 47 | ||
| 48 | nand->cmd_ctrl = plat_cmd_ctrl; | |
| 49 | nand->dev_ready = plat_dev_ready; | |
| 50 | nand->ecc.mode = NAND_ECC_SOFT; | |
| 51 | ||
| 52 | return 0; | |
| 53 | } |