include/nand.h

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