1 /* SPDX-License-Identifier: GPL-2.0 */
4 * 2N Telekomunikace, a.s. <www.2n.cz>
13 extern void nand_init(void);
14 void nand_reinit(void);
15 unsigned long nand_size(void);
16 unsigned int nand_page_size(void);
18 #include <linux/compat.h>
19 #include <linux/mtd/mtd.h>
21 int nand_mtd_to_devnum(struct mtd_info *mtd);
23 #if CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
24 void board_nand_init(void);
25 int nand_register(int devnum, struct mtd_info *mtd);
26 void nand_unregister(struct mtd_info *mtd);
30 extern int board_nand_init(struct nand_chip *nand);
33 extern int nand_curr_device;
35 static inline int nand_read(struct mtd_info *info, loff_t ofs, size_t *len,
38 return mtd_read(info, ofs, *len, (size_t *)len, buf);
41 static inline int nand_write(struct mtd_info *info, loff_t ofs, size_t *len,
44 return mtd_write(info, ofs, *len, (size_t *)len, buf);
47 static inline int nand_block_isbad(struct mtd_info *info, loff_t ofs)
49 return mtd_block_isbad(info, ofs);
52 static inline int nand_erase(struct mtd_info *info, loff_t off, size_t size)
54 struct erase_info instr;
60 return mtd_erase(info, &instr);
64 /*****************************************************************************
65 * declarations from nand_util.c
66 ****************************************************************************/
68 typedef struct mtd_oob_ops mtd_oob_ops_t;
70 struct nand_erase_options {
71 loff_t length; /* number of bytes to erase */
72 loff_t offset; /* first address in NAND to erase */
73 int quiet; /* don't display progress messages */
74 int jffs2; /* if true: format for jffs2 usage
75 * (write appropriate cleanmarker blocks) */
76 int scrub; /* if true, really clean NAND by erasing
77 * bad blocks (UNSAFE) */
79 /* Don't include skipped bad blocks in size to be erased */
81 /* maximum size that actual may be in order to not exceed the buf */
85 typedef struct nand_erase_options nand_erase_options_t;
87 int nand_read_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
88 size_t *actual, loff_t lim, u_char *buffer);
90 #define WITH_DROP_FFS (1 << 0) /* drop trailing all-0xff pages */
91 #define WITH_WR_VERIFY (1 << 1) /* verify data was written correctly */
93 int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
94 size_t *actual, loff_t lim, u_char *buffer, int flags);
95 int nand_erase_opts(struct mtd_info *mtd,
96 const nand_erase_options_t *opts);
97 int nand_torture(struct mtd_info *mtd, loff_t offset);
98 int nand_verify_page_oob(struct mtd_info *mtd, struct mtd_oob_ops *ops,
100 int nand_verify(struct mtd_info *mtd, loff_t ofs, size_t len, u_char *buf);
102 #define NAND_LOCK_STATUS_TIGHT 0x01
103 #define NAND_LOCK_STATUS_UNLOCK 0x04
105 int nand_lock(struct mtd_info *mtd, int tight);
106 int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length,
108 int nand_get_lock_status(struct mtd_info *mtd, loff_t offset);
110 u32 nand_spl_adjust_offset(u32 sector, u32 offs);
111 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
112 int nand_spl_read_block(int block, int offset, int len, void *dst);
113 void nand_deselect(void);
115 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
116 void board_nand_select_device(struct nand_chip *nand, int chip);
119 __attribute__((noreturn)) void nand_boot(void);
121 #ifdef CONFIG_ENV_OFFSET_OOB
122 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
124 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
125 stored as byte number */
126 #define ENV_OFFSET_SIZE 8
127 int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result);
129 int spl_nand_erase_one(int block, int page);
131 /* platform specific init functions */
132 void sunxi_nand_init(void);
135 * get_nand_dev_by_index - Get the nand info based in index.
137 * @dev - index to the nand device.
139 * returns pointer to the nand device info structure or NULL on failure.
141 struct mtd_info *get_nand_dev_by_index(int dev);
143 #endif /* _NAND_H_ */