3 * 2N Telekomunikace, a.s. <www.2n.cz>
4 * Ladislav Michl <michl@2n.cz>
6 * See file CREDITS for list of people who contributed to this
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.
19 extern void nand_init(void);
21 #include <linux/compat.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/nand.h>
25 #ifdef CONFIG_SYS_NAND_SELF_INIT
26 void board_nand_init(void);
27 int nand_register(int devnum);
29 extern int board_nand_init(struct nand_chip *nand);
32 typedef struct mtd_info nand_info_t;
34 extern int nand_curr_device;
35 extern nand_info_t nand_info[];
37 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
39 return mtd_read(info, ofs, *len, (size_t *)len, buf);
42 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
44 return mtd_write(info, ofs, *len, (size_t *)len, buf);
47 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
49 return mtd_block_isbad(info, ofs);
52 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
54 struct erase_info instr;
61 return mtd_erase(info, &instr);
65 /*****************************************************************************
66 * declarations from nand_util.c
67 ****************************************************************************/
69 typedef struct mtd_oob_ops mtd_oob_ops_t;
71 struct nand_erase_options {
72 loff_t length; /* number of bytes to erase */
73 loff_t offset; /* first address in NAND to erase */
74 int quiet; /* don't display progress messages */
75 int jffs2; /* if true: format for jffs2 usage
76 * (write appropriate cleanmarker blocks) */
77 int scrub; /* if true, really clean NAND by erasing
78 * bad blocks (UNSAFE) */
80 /* Don't include skipped bad blocks in size to be erased */
82 /* maximum size that actual may be in order to not exceed the buf */
86 typedef struct nand_erase_options nand_erase_options_t;
88 int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
89 size_t *actual, loff_t lim, u_char *buffer);
91 #define WITH_DROP_FFS (1 << 0) /* drop trailing all-0xff pages */
92 #define WITH_WR_VERIFY (1 << 1) /* verify data was written correctly */
94 int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
95 size_t *actual, loff_t lim, u_char *buffer, int flags);
96 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
97 int nand_torture(nand_info_t *nand, loff_t offset);
98 int nand_verify_page_oob(nand_info_t *nand, struct mtd_oob_ops *ops,
100 int nand_verify(nand_info_t *nand, 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(nand_info_t *meminfo, int tight);
106 int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length,
108 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
110 int nand_spl_load_image(uint32_t offs, unsigned int size, 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);
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(nand_info_t *nand, unsigned long *result);
129 int spl_nand_erase_one(int block, int page);