| /* |
| * (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> |
| #include <nand.h> |
| #include <errno.h> |
| #include <cmd_confdefs.h> |
| #include <config.h> |
| |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| int nand_curr_device = -1; |
| |
| |
| nand_info_t nand_info[CONFIG_SYS_MAX_NAND_DEVICE]; |
| |
| #ifndef CONFIG_SYS_NAND_SELF_INIT |
| static struct nand_chip nand_chip[CONFIG_SYS_MAX_NAND_DEVICE]; |
| static ulong base_address[CONFIG_SYS_MAX_NAND_DEVICE] = CONFIG_SYS_NAND_BASE_LIST; |
| #endif |
| |
| static char dev_name[CONFIG_SYS_MAX_NAND_DEVICE][8]; |
| |
| static unsigned long total_nand_size; /* in kiB */ |
| |
| /* Register an initialized NAND mtd device with the U-Boot NAND command. */ |
| int nand_register(int devnum) |
| { |
| struct mtd_info *mtd; |
| |
| if (devnum >= CONFIG_SYS_MAX_NAND_DEVICE) |
| return -EINVAL; |
| |
| mtd = &nand_info[devnum]; |
| |
| sprintf(dev_name[devnum], "nand%d", devnum); |
| mtd->name = dev_name[devnum]; |
| |
| #ifdef CONFIG_MTD_DEVICE |
| /* |
| * Add MTD device so that we can reference it later |
| * via the mtdcore infrastructure (e.g. ubi). |
| */ |
| add_mtd_device(mtd); |
| #endif |
| |
| total_nand_size += mtd->size / 1024; |
| |
| if (nand_curr_device == -1) |
| nand_curr_device = devnum; |
| |
| return 0; |
| } |
| |
| #ifndef CONFIG_SYS_NAND_SELF_INIT |
| static void nand_init_chip(int i) |
| { |
| struct mtd_info *mtd = &nand_info[i]; |
| struct nand_chip *nand = &nand_chip[i]; |
| ulong base_addr = base_address[i]; |
| int maxchips = CONFIG_SYS_NAND_MAX_CHIPS; |
| |
| if (maxchips < 1) |
| maxchips = 1; |
| |
| mtd->priv = nand; |
| nand->IO_ADDR_R = nand->IO_ADDR_W = (void __iomem *)base_addr; |
| |
| if (board_nand_init(nand)) |
| return; |
| |
| if (nand_scan(mtd, maxchips)) |
| return; |
| |
| nand_register(i); |
| } |
| #endif |
| |
| void nand_init(void) |
| { |
| #ifdef CONFIG_SYS_NAND_SELF_INIT |
| board_nand_init(); |
| #else |
| int i; |
| |
| for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) |
| nand_init_chip(i); |
| #endif |
| |
| printf("%lu MiB\n", total_nand_size / 1024); |
| |
| #ifdef CONFIG_SYS_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 |
| } |