LXR uboot/drivers/mtd/onenand/onenand

   1/*
   2 *  drivers/mtd/onenand/onenand_uboot.c
   3 *
   4 *  Copyright (C) 2005-2008 Samsung Electronics
   5 *  Kyungmin Park <kyungmin.park@samsung.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 */
  11
  12/*
  13 * OneNAND initialization at U-Boot
  14 */
  15
  16#include <common.h>
  17#include <linux/compat.h>
  18#include <linux/mtd/mtd.h>
  19#include <linux/mtd/onenand.h>
  20
  21struct mtd_info onenand_mtd;
  22struct onenand_chip onenand_chip;
  23static __attribute__((unused)) char dev_name[] = "onenand0";
  24
  25void onenand_init(void)
  26{
  27        int err = 0;
  28        memset(&onenand_mtd, 0, sizeof(struct mtd_info));
  29        memset(&onenand_chip, 0, sizeof(struct onenand_chip));
  30
  31        onenand_mtd.priv = &onenand_chip;
  32
  33#ifdef CONFIG_USE_ONENAND_BOARD_INIT
  34        /* It's used for some board init required */
  35        err = onenand_board_init(&onenand_mtd);
  36#else
  37        onenand_chip.base = (void *) CONFIG_SYS_ONENAND_BASE;
  38#endif
  39
  40        if (!err && !(onenand_scan(&onenand_mtd, 1))) {
  41
  42                if (onenand_chip.device_id & DEVICE_IS_FLEXONENAND)
  43                        puts("Flex-");
  44                puts("OneNAND: ");
  45
  46#ifdef CONFIG_MTD
  47                /*
  48                 * Add MTD device so that we can reference it later
  49                 * via the mtdcore infrastructure (e.g. ubi).
  50                 */
  51                onenand_mtd.name = dev_name;
  52                add_mtd_device(&onenand_mtd);
  53#endif
  54        }
  55        print_size(onenand_chip.chipsize, "\n");
  56}
  57