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  1. /*
  2. * Copyright (C) 2009 by David Brownell
  3. *
  4. * This program is free software; you can redistribute it and/or modify
  5. * it under the terms of the GNU General Public License as published by
  6. * the Free Software Foundation; either version 2 of the License, or
  7. * (at your option) any later version.
  8. *
  9. * This program is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. * GNU General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU General Public License
  15. * along with this program; if not, write to the
  16. * Free Software Foundation, Inc.,
  17. * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18. */
  19. #ifndef __ARM_NANDIO_H
  20. #define __ARM_NANDIO_H
  21. /**
  22. * Available operational states the arm_nand_data struct can be in.
  23. */
  24. enum arm_nand_op {
  25. ARM_NAND_NONE, /**< No operation performed. */
  26. ARM_NAND_READ, /**< Read operation performed. */
  27. ARM_NAND_WRITE, /**< Write operation performed. */
  28. };
  29. /**
  30. * The arm_nand_data struct is used for defining NAND I/O operations on an ARM
  31. * core.
  32. */
  33. struct arm_nand_data {
  34. /** Target is proxy for some ARM core. */
  35. struct target *target;
  36. /** The copy area holds code loop and data for I/O operations. */
  37. struct working_area *copy_area;
  38. /** The chunk size is the page size or ECC chunk. */
  39. unsigned chunk_size;
  40. /** Where data is read from or written to. */
  41. uint32_t data;
  42. /** Last operation executed using this struct. */
  43. enum arm_nand_op op;
  44. /* currently implicit: data width == 8 bits (not 16) */
  45. };
  46. int arm_nandwrite(struct arm_nand_data *nand, uint8_t *data, int size);
  47. int arm_nandread(struct arm_nand_data *nand, uint8_t *data, uint32_t size);
  48. #endif /* __ARM_NANDIO_H */