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   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, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 /*
  22  * S3C24XX Series OpenOCD NAND Flash controller support.
  23  *
  24  * Many thanks to Simtec Electronics for sponsoring this work.
  25  */
  26
  27 #include "nand.h"
  28 #include "s3c24xx_regs_nand.h"
  29
  30 typedef struct s3c24xx_nand_controller_s
  31 {
  32         struct target_s *target;
  33
  34         /* register addresses */
  35         u32              cmd;
  36         u32              addr;
  37         u32              data;
  38         u32              nfstat;
  39 } s3c24xx_nand_controller_t;
  40
  41 /* Default to using the un-translated NAND register based address */
  42 #undef S3C2410_NFREG
  43 #define S3C2410_NFREG(x) ((x) + 0x4e000000)
  44
  45 extern s3c24xx_nand_controller_t *s3c24xx_nand_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct nand_device_s *device);
  46
  47 extern int s3c24xx_register_commands(struct command_context_s *cmd_ctx);
  48 extern int s3c24xx_reset(struct nand_device_s *device);
  49 extern int s3c24xx_command(struct nand_device_s *device, u8 command);
  50 extern int s3c24xx_address(struct nand_device_s *device, u8 address);
  51 extern int s3c24xx_write_data(struct nand_device_s *device, u16 data);
  52 extern int s3c24xx_read_data(struct nand_device_s *device, void *data);
  53 extern int s3c24xx_controller_ready(struct nand_device_s *device, int tout);
  54
  55 #define s3c24xx_write_page NULL
  56 #define s3c24xx_read_page NULL
  57
  58 /* code shared between different controllers */
  59
  60 extern int s3c2440_nand_ready(struct nand_device_s *device, int timeout);
  61
  62 extern int s3c2440_read_block_data(struct nand_device_s *, u8 *data, int data_size);
  63 extern int s3c2440_write_block_data(struct nand_device_s *, u8 *data, int data_size);