diff options
Diffstat (limited to 'drivers/mtd/nand/nand.c')
| -rw-r--r-- | drivers/mtd/nand/nand.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand.c b/drivers/mtd/nand/nand.c new file mode 100644 index 0000000..27b5792 --- /dev/null +++ b/drivers/mtd/nand/nand.c @@ -0,0 +1,83 @@ +/* + * (C) Copyright 2005 + * 2N Telekomunikace, a.s. <www.2n.cz> + * Ladislav Michl <michl@2n.cz> + * + * 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 + * version 2 as published by the Free Software Foundation. + * + * 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 defined(CONFIG_CMD_NAND) && !defined(CFG_NAND_LEGACY) + +#include <nand.h> + +#ifndef CFG_NAND_BASE_LIST +#define CFG_NAND_BASE_LIST { CFG_NAND_BASE } +#endif + +int nand_curr_device = -1; +nand_info_t nand_info[CFG_MAX_NAND_DEVICE]; + +static struct nand_chip nand_chip[CFG_MAX_NAND_DEVICE]; +static ulong base_address[CFG_MAX_NAND_DEVICE] = CFG_NAND_BASE_LIST; + +static const char default_nand_name[] = "nand"; + +extern int board_nand_init(struct nand_chip *nand); + +static void nand_init_chip(struct mtd_info *mtd, struct nand_chip *nand, + ulong base_addr) +{ + mtd->priv = nand; + + nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr; + if (board_nand_init(nand) == 0) { + if (nand_scan(mtd, 1) == 0) { + if (!mtd->name) + mtd->name = (char *)default_nand_name; + } else + mtd->name = NULL; + } else { + mtd->name = NULL; + mtd->size = 0; + } + +} + +void nand_init(void) +{ + int i; + unsigned int size = 0; + for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) { + nand_init_chip(&nand_info[i], &nand_chip[i], base_address[i]); + size += nand_info[i].size; + if (nand_curr_device == -1) + nand_curr_device = i; + } + printf("%lu MiB\n", size / (1024 * 1024)); + +#ifdef CFG_NAND_SELECT_DEVICE + /* + * Select the chip in the board/cpu specific driver + */ + board_nand_select_device(nand_info[nand_curr_device].priv, nand_curr_device); +#endif +} + +#endif |