nand.h 4.0 KB

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  1. /*
  2. * (C) Copyright 2005
  3. * 2N Telekomunikace, a.s. <www.2n.cz>
  4. * Ladislav Michl <michl@2n.cz>
  5. *
  6. * See file CREDITS for list of people who contributed to this
  7. * project.
  8. *
  9. * This program is free software; you can redistribute it and/or
  10. * modify it under the terms of the GNU General Public License
  11. * version 2 as published by the Free Software Foundation.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program; if not, write to the Free Software
  20. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21. * MA 02111-1307 USA
  22. */
  23. #ifndef _NAND_H_
  24. #define _NAND_H_
  25. extern void nand_init(void);
  26. #include <linux/mtd/compat.h>
  27. #include <linux/mtd/mtd.h>
  28. #include <linux/mtd/nand.h>
  29. extern int board_nand_init(struct nand_chip *nand);
  30. typedef struct mtd_info nand_info_t;
  31. extern int nand_curr_device;
  32. extern nand_info_t nand_info[];
  33. static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
  34. {
  35. return info->read(info, ofs, *len, (size_t *)len, buf);
  36. }
  37. static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
  38. {
  39. return info->write(info, ofs, *len, (size_t *)len, buf);
  40. }
  41. static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
  42. {
  43. return info->block_isbad(info, ofs);
  44. }
  45. static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
  46. {
  47. struct erase_info instr;
  48. instr.mtd = info;
  49. instr.addr = off;
  50. instr.len = size;
  51. instr.callback = 0;
  52. return info->erase(info, &instr);
  53. }
  54. /*****************************************************************************
  55. * declarations from nand_util.c
  56. ****************************************************************************/
  57. struct nand_write_options {
  58. u_char *buffer; /* memory block containing image to write */
  59. ulong length; /* number of bytes to write */
  60. ulong offset; /* start address in NAND */
  61. int quiet; /* don't display progress messages */
  62. int autoplace; /* if true use auto oob layout */
  63. int forcejffs2; /* force jffs2 oob layout */
  64. int forceyaffs; /* force yaffs oob layout */
  65. int noecc; /* write without ecc */
  66. int writeoob; /* image contains oob data */
  67. int pad; /* pad to page size */
  68. int blockalign; /* 1|2|4 set multiple of eraseblocks
  69. * to align to */
  70. };
  71. typedef struct nand_write_options nand_write_options_t;
  72. typedef struct mtd_oob_ops mtd_oob_ops_t;
  73. struct nand_read_options {
  74. u_char *buffer; /* memory block in which read image is written*/
  75. ulong length; /* number of bytes to read */
  76. ulong offset; /* start address in NAND */
  77. int quiet; /* don't display progress messages */
  78. int readoob; /* put oob data in image */
  79. };
  80. typedef struct nand_read_options nand_read_options_t;
  81. struct nand_erase_options {
  82. ulong length; /* number of bytes to erase */
  83. ulong offset; /* first address in NAND to erase */
  84. int quiet; /* don't display progress messages */
  85. int jffs2; /* if true: format for jffs2 usage
  86. * (write appropriate cleanmarker blocks) */
  87. int scrub; /* if true, really clean NAND by erasing
  88. * bad blocks (UNSAFE) */
  89. };
  90. typedef struct nand_erase_options nand_erase_options_t;
  91. int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
  92. u_char *buffer);
  93. int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
  94. u_char *buffer);
  95. int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
  96. #define NAND_LOCK_STATUS_TIGHT 0x01
  97. #define NAND_LOCK_STATUS_LOCK 0x02
  98. #define NAND_LOCK_STATUS_UNLOCK 0x04
  99. int nand_lock( nand_info_t *meminfo, int tight );
  100. int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
  101. int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
  102. #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
  103. void board_nand_select_device(struct nand_chip *nand, int chip);
  104. #endif
  105. __attribute__((noreturn)) void nand_boot(void);
  106. #endif