include/nand.h

   1 /*
   2  * (C) Copyright 2005
   3  * 2N Telekomunikace, a.s. <www.2n.cz>
   4  * Ladislav Michl <michl@2n.cz>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0
   7  */
   8
   9 #ifndef _NAND_H_
  10 #define _NAND_H_
  11
  12 #include <config.h>
  13
  14 /*
  15  * All boards using a given driver must convert to self-init
  16  * at the same time, so do it here.  When all drivers are
  17  * converted, this will go away.
  18  */
  19 #ifdef CONFIG_SPL_BUILD
  20 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_FSL_IFC)
  21 #define CONFIG_SYS_NAND_SELF_INIT
  22 #endif
  23 #else
  24 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\
  25         || defined(CONFIG_NAND_FSL_IFC)
  26 #define CONFIG_SYS_NAND_SELF_INIT
  27 #endif
  28 #endif
  29
  30 extern void nand_init(void);
  31 unsigned long nand_size(void);
  32
  33 #include <linux/compat.h>
  34 #include <linux/mtd/mtd.h>
  35 #include <linux/mtd/nand.h>
  36
  37 int nand_mtd_to_devnum(struct mtd_info *mtd);
  38
  39 #ifdef CONFIG_SYS_NAND_SELF_INIT
  40 void board_nand_init(void);
  41 int nand_register(int devnum, struct mtd_info *mtd);
  42 #else
  43 extern int board_nand_init(struct nand_chip *nand);
  44 #endif
  45
  46 extern int nand_curr_device;
  47
  48 static inline int nand_read(struct mtd_info *info, loff_t ofs, size_t *len,
  49                             u_char *buf)
  50 {
  51         return mtd_read(info, ofs, *len, (size_t *)len, buf);
  52 }
  53
  54 static inline int nand_write(struct mtd_info *info, loff_t ofs, size_t *len,
  55                              u_char *buf)
  56 {
  57         return mtd_write(info, ofs, *len, (size_t *)len, buf);
  58 }
  59
  60 static inline int nand_block_isbad(struct mtd_info *info, loff_t ofs)
  61 {
  62         return mtd_block_isbad(info, ofs);
  63 }
  64
  65 static inline int nand_erase(struct mtd_info *info, loff_t off, size_t size)
  66 {
  67         struct erase_info instr;
  68
  69         instr.mtd = info;
  70         instr.addr = off;
  71         instr.len = size;
  72         instr.callback = 0;
  73
  74         return mtd_erase(info, &instr);
  75 }
  76
  77
  78 /*****************************************************************************
  79  * declarations from nand_util.c
  80  ****************************************************************************/
  81
  82 typedef struct mtd_oob_ops mtd_oob_ops_t;
  83
  84 struct nand_erase_options {
  85         loff_t length;          /* number of bytes to erase */
  86         loff_t offset;          /* first address in NAND to erase */
  87         int quiet;              /* don't display progress messages */
  88         int jffs2;              /* if true: format for jffs2 usage
  89                                  * (write appropriate cleanmarker blocks) */
  90         int scrub;              /* if true, really clean NAND by erasing
  91                                  * bad blocks (UNSAFE) */
  92
  93         /* Don't include skipped bad blocks in size to be erased */
  94         int spread;
  95         /* maximum size that actual may be in order to not exceed the buf */
  96         loff_t lim;
  97 };
  98
  99 typedef struct nand_erase_options nand_erase_options_t;
 100
 101 int nand_read_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
 102                        size_t *actual, loff_t lim, u_char *buffer);
 103
 104 #define WITH_DROP_FFS   (1 << 0) /* drop trailing all-0xff pages */
 105 #define WITH_WR_VERIFY  (1 << 1) /* verify data was written correctly */
 106
 107 int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
 108                         size_t *actual, loff_t lim, u_char *buffer, int flags);
 109 int nand_erase_opts(struct mtd_info *mtd,
 110                     const nand_erase_options_t *opts);
 111 int nand_torture(struct mtd_info *mtd, loff_t offset);
 112 int nand_verify_page_oob(struct mtd_info *mtd, struct mtd_oob_ops *ops,
 113                          loff_t ofs);
 114 int nand_verify(struct mtd_info *mtd, loff_t ofs, size_t len, u_char *buf);
 115
 116 #define NAND_LOCK_STATUS_TIGHT  0x01
 117 #define NAND_LOCK_STATUS_UNLOCK 0x04
 118
 119 int nand_lock(struct mtd_info *mtd, int tight);
 120 int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length,
 121                 int allexcept);
 122 int nand_get_lock_status(struct mtd_info *mtd, loff_t offset);
 123
 124 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
 125 int nand_spl_read_block(int block, int offset, int len, void *dst);
 126 void nand_deselect(void);
 127
 128 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
 129 void board_nand_select_device(struct nand_chip *nand, int chip);
 130 #endif
 131
 132 __attribute__((noreturn)) void nand_boot(void);
 133
 134 #ifdef CONFIG_ENV_OFFSET_OOB
 135 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
 136                                     as block number*/
 137 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
 138                                         stored as byte number */
 139 #define ENV_OFFSET_SIZE 8
 140 int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result);
 141 #endif
 142 int spl_nand_erase_one(int block, int page);
 143
 144 /* platform specific init functions */
 145 void sunxi_nand_init(void);
 146
 147 /*
 148  * get_nand_dev_by_index - Get the nand info based in index.
 149  *
 150  * @dev - index to the nand device.
 151  *
 152  * returns pointer to the nand device info structure or NULL on failure.
 153  */
 154 struct mtd_info *get_nand_dev_by_index(int dev);
 155
 156 #endif /* _NAND_H_ */