arch/arm/plat-s3c/include/plat/nand.h

   1 /* arch/arm/mach-s3c2410/include/mach/nand.h
   2  *
   3  * Copyright (c) 2004 Simtec Electronics
   4  *      Ben Dooks <ben@simtec.co.uk>
   5  *
   6  * S3C2410 - NAND device controller platfrom_device info
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 /**
  14  * struct s3c2410_nand_set - define a set of one or more nand chips
  15  * @disable_ecc:        Entirely disable ECC - Dangerous
  16  * @flash_bbt:          Openmoko u-boot can create a Bad Block Table
  17  *                      Setting this flag will allow the kernel to
  18  *                      look for it at boot time and also skip the NAND
  19  *                      scan.
  20  * @nr_chips:           Number of chips in this set
  21  * @nr_partitions:      Number of partitions pointed to by @partitions
  22  * @name:               Name of set (optional)
  23  * @nr_map:             Map for low-layer logical to physical chip numbers (option)
  24  * @partitions:         The mtd partition list
  25  *
  26  * define a set of one or more nand chips registered with an unique mtd. Also
  27  * allows to pass flag to the underlying NAND layer. 'disable_ecc' will trigger
  28  * a warning at boot time.
  29  */
  30 struct s3c2410_nand_set {
  31         unsigned int            disable_ecc:1;
  32         unsigned int            flash_bbt:1;
  33
  34         int                     nr_chips;
  35         int                     nr_partitions;
  36         char                    *name;
  37         int                     *nr_map;
  38         struct mtd_partition    *partitions;
  39         struct nand_ecclayout   *ecc_layout;
  40 };
  41
  42 struct s3c2410_platform_nand {
  43         /* timing information for controller, all times in nanoseconds */
  44
  45         int     tacls;  /* time for active CLE/ALE to nWE/nOE */
  46         int     twrph0; /* active time for nWE/nOE */
  47         int     twrph1; /* time for release CLE/ALE from nWE/nOE inactive */
  48
  49         unsigned int    ignore_unset_ecc:1;
  50
  51         int                     nr_sets;
  52         struct s3c2410_nand_set *sets;
  53
  54         void                    (*select_chip)(struct s3c2410_nand_set *,
  55                                                int chip);
  56 };
  57