src/flash/nand/s3c2412.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007, 2008 by Ben Dooks                                 *
   3  *   ben@fluff.org                                                         *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  17  ***************************************************************************/
  18
  19 /*
  20  * S3C2412 OpenOCD NAND Flash controller support.
  21  *
  22  * Many thanks to Simtec Electronics for sponsoring this work.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include "s3c24xx.h"
  30
  31 NAND_DEVICE_COMMAND_HANDLER(s3c2412_nand_device_command)
  32 {
  33         struct s3c24xx_nand_controller *info;
  34         CALL_S3C24XX_DEVICE_COMMAND(nand, &info);
  35
  36         /* fill in the address fields for the core device */
  37         info->cmd = S3C2440_NFCMD;
  38         info->addr = S3C2440_NFADDR;
  39         info->data = S3C2440_NFDATA;
  40         info->nfstat = S3C2412_NFSTAT;
  41
  42         return ERROR_OK;
  43 }
  44
  45 static int s3c2412_init(struct nand_device *nand)
  46 {
  47         struct target *target = nand->target;
  48
  49         target_write_u32(target, S3C2410_NFCONF,
  50                          S3C2440_NFCONF_TACLS(3) |
  51                          S3C2440_NFCONF_TWRPH0(7) |
  52                          S3C2440_NFCONF_TWRPH1(7));
  53
  54         target_write_u32(target, S3C2440_NFCONT,
  55                          S3C2412_NFCONT_INIT_MAIN_ECC |
  56                          S3C2440_NFCONT_ENABLE);
  57
  58         return ERROR_OK;
  59 }
  60
  61 struct nand_flash_controller s3c2412_nand_controller = {
  62         .name = "s3c2412",
  63         .nand_device_command = &s3c2412_nand_device_command,
  64         .init = &s3c2412_init,
  65         .reset = &s3c24xx_reset,
  66         .command = &s3c24xx_command,
  67         .address = &s3c24xx_address,
  68         .write_data = &s3c24xx_write_data,
  69         .read_data = &s3c24xx_read_data,
  70         .write_page = s3c24xx_write_page,
  71         .read_page = s3c24xx_read_page,
  72         .write_block_data = &s3c2440_write_block_data,
  73         .read_block_data = &s3c2440_read_block_data,
  74         .nand_ready = &s3c2440_nand_ready,
  75 };