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24#ifndef _NAND_H_
25#define _NAND_H_
26
27#include <config.h>
28
29
30
31
32
33
34#if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)
35#define CONFIG_SYS_NAND_SELF_INIT
36#endif
37
38extern void nand_init(void);
39
40#include <linux/compat.h>
41#include <linux/mtd/mtd.h>
42#include <linux/mtd/nand.h>
43
44#ifdef CONFIG_SYS_NAND_SELF_INIT
45void board_nand_init(void);
46int nand_register(int devnum);
47#else
48extern int board_nand_init(struct nand_chip *nand);
49#endif
50
51typedef struct mtd_info nand_info_t;
52
53extern int nand_curr_device;
54extern nand_info_t nand_info[];
55
56static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
57{
58 return info->read(info, ofs, *len, (size_t *)len, buf);
59}
60
61static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
62{
63 return info->write(info, ofs, *len, (size_t *)len, buf);
64}
65
66static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
67{
68 return info->block_isbad(info, ofs);
69}
70
71static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
72{
73 struct erase_info instr;
74
75 instr.mtd = info;
76 instr.addr = off;
77 instr.len = size;
78 instr.callback = 0;
79
80 return info->erase(info, &instr);
81}
82
83
84
85
86
87
88struct nand_write_options {
89 u_char *buffer;
90 ulong length;
91 ulong offset;
92 int quiet;
93 int autoplace;
94 int forcejffs2;
95 int forceyaffs;
96 int noecc;
97 int writeoob;
98 int pad;
99 int blockalign;
100
101};
102
103typedef struct nand_write_options nand_write_options_t;
104typedef struct mtd_oob_ops mtd_oob_ops_t;
105
106struct nand_read_options {
107 u_char *buffer;
108 ulong length;
109 ulong offset;
110 int quiet;
111 int readoob;
112};
113
114typedef struct nand_read_options nand_read_options_t;
115
116struct nand_erase_options {
117 loff_t length;
118 loff_t offset;
119 int quiet;
120 int jffs2;
121
122 int scrub;
123
124
125
126 int spread;
127};
128
129typedef struct nand_erase_options nand_erase_options_t;
130
131int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
132 u_char *buffer);
133
134#define WITH_YAFFS_OOB (1 << 0)
135
136
137#define WITH_DROP_FFS (1 << 1)
138
139int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
140 u_char *buffer, int flags);
141int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
142
143#define NAND_LOCK_STATUS_TIGHT 0x01
144#define NAND_LOCK_STATUS_UNLOCK 0x04
145
146int nand_lock(nand_info_t *meminfo, int tight);
147int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length,
148 int allexcept);
149int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
150
151int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
152void nand_deselect(void);
153
154#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
155void board_nand_select_device(struct nand_chip *nand, int chip);
156#endif
157
158__attribute__((noreturn)) void nand_boot(void);
159
160#endif
161
162#ifdef CONFIG_ENV_OFFSET_OOB
163#define ENV_OOB_MARKER 0x30425645
164
165#define ENV_OOB_MARKER_OLD 0x30564e45
166
167#define ENV_OFFSET_SIZE 8
168int get_nand_env_oob(nand_info_t *nand, unsigned long *result);
169#endif
170