1 /* SPDX-License-Identifier: GPL-2.0 */
4 * 2N Telekomunikace, a.s. <www.2n.cz>
11 extern void nand_init(void);
12 void nand_reinit(void);
13 unsigned long nand_size(void);
14 unsigned int nand_page_size(void);
16 #include <linux/compat.h>
17 #include <linux/mtd/mtd.h>
19 int nand_mtd_to_devnum(struct mtd_info *mtd);
21 #if CONFIG_IS_ENABLED(SYS_NAND_SELF_INIT)
22 void board_nand_init(void);
23 int nand_register(int devnum, struct mtd_info *mtd);
24 void nand_unregister(struct mtd_info *mtd);
28 extern int board_nand_init(struct nand_chip *nand);
31 extern int nand_curr_device;
33 static inline int nand_read(struct mtd_info *info, loff_t ofs, size_t *len,
36 return mtd_read(info, ofs, *len, (size_t *)len, buf);
39 static inline int nand_write(struct mtd_info *info, loff_t ofs, size_t *len,
42 return mtd_write(info, ofs, *len, (size_t *)len, buf);
45 static inline int nand_block_isbad(struct mtd_info *info, loff_t ofs)
47 return mtd_block_isbad(info, ofs);
50 static inline int nand_erase(struct mtd_info *info, loff_t off, size_t size)
52 struct erase_info instr;
58 return mtd_erase(info, &instr);
62 /*****************************************************************************
63 * declarations from nand_util.c
64 ****************************************************************************/
66 typedef struct mtd_oob_ops mtd_oob_ops_t;
68 struct nand_erase_options {
69 loff_t length; /* number of bytes to erase */
70 loff_t offset; /* first address in NAND to erase */
71 int quiet; /* don't display progress messages */
72 int jffs2; /* if true: format for jffs2 usage
73 * (write appropriate cleanmarker blocks) */
74 int scrub; /* if true, really clean NAND by erasing
75 * bad blocks (UNSAFE) */
77 /* Don't include skipped bad blocks in size to be erased */
79 /* maximum size that actual may be in order to not exceed the buf */
83 typedef struct nand_erase_options nand_erase_options_t;
85 int nand_read_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
86 size_t *actual, loff_t lim, u_char *buffer);
88 #define WITH_DROP_FFS (1 << 0) /* drop trailing all-0xff pages */
89 #define WITH_WR_VERIFY (1 << 1) /* verify data was written correctly */
91 int nand_write_skip_bad(struct mtd_info *mtd, loff_t offset, size_t *length,
92 size_t *actual, loff_t lim, u_char *buffer, int flags);
93 int nand_erase_opts(struct mtd_info *mtd,
94 const nand_erase_options_t *opts);
95 int nand_torture(struct mtd_info *mtd, loff_t offset);
96 int nand_verify_page_oob(struct mtd_info *mtd, struct mtd_oob_ops *ops,
98 int nand_verify(struct mtd_info *mtd, loff_t ofs, size_t len, u_char *buf);
100 #define NAND_LOCK_STATUS_TIGHT 0x01
101 #define NAND_LOCK_STATUS_UNLOCK 0x04
103 int nand_lock(struct mtd_info *mtd, int tight);
104 int nand_unlock(struct mtd_info *mtd, loff_t start, size_t length,
106 int nand_get_lock_status(struct mtd_info *mtd, loff_t offset);
108 u32 nand_spl_adjust_offset(u32 sector, u32 offs);
109 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
110 int nand_spl_read_block(int block, int offset, int len, void *dst);
111 void nand_deselect(void);
113 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
114 void board_nand_select_device(struct nand_chip *nand, int chip);
117 __attribute__((noreturn)) void nand_boot(void);
119 #ifdef CONFIG_ENV_OFFSET_OOB
120 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
122 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
123 stored as byte number */
124 #define ENV_OFFSET_SIZE 8
125 int get_nand_env_oob(struct mtd_info *mtd, unsigned long *result);
127 int spl_nand_erase_one(int block, int page);
129 /* platform specific init functions */
130 void sunxi_nand_init(void);
133 * get_nand_dev_by_index - Get the nand info based in index.
135 * @dev - index to the nand device.
137 * returns pointer to the nand device info structure or NULL on failure.
139 struct mtd_info *get_nand_dev_by_index(int dev);
141 #endif /* _NAND_H_ */