onenand_uboot.c 1.4 KB

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  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. * OneNAND initialization at U-Boot
  13. */
  14. #include <common.h>
  15. #include <linux/compat.h>
  16. #include <linux/mtd/mtd.h>
  17. #include <linux/mtd/onenand.h>
  18. struct mtd_info onenand_mtd;
  19. struct onenand_chip onenand_chip;
  20. static __attribute__((unused)) char dev_name[] = "onenand0";
  21. void onenand_init(void)
  22. {
  23. int err = 0;
  24. memset(&onenand_mtd, 0, sizeof(struct mtd_info));
  25. memset(&onenand_chip, 0, sizeof(struct onenand_chip));
  26. onenand_mtd.priv = &onenand_chip;
  27. #ifdef CONFIG_USE_ONENAND_BOARD_INIT
  28. /* It's used for some board init required */
  29. err = onenand_board_init(&onenand_mtd);
  30. #else
  31. onenand_chip.base = (void *) CONFIG_SYS_ONENAND_BASE;
  32. #endif
  33. if (!err && !(onenand_scan(&onenand_mtd, 1))) {
  34. if (onenand_chip.device_id & DEVICE_IS_FLEXONENAND)
  35. puts("Flex-");
  36. puts("OneNAND: ");
  37. #ifdef CONFIG_MTD_DEVICE
  38. /*
  39. * Add MTD device so that we can reference it later
  40. * via the mtdcore infrastructure (e.g. ubi).
  41. */
  42. onenand_mtd.name = dev_name;
  43. add_mtd_device(&onenand_mtd);
  44. #endif
  45. }
  46. print_size(onenand_chip.chipsize, "\n");
  47. }