summaryrefslogtreecommitdiffstats
path: root/include/nand.h
blob: dded4e27f059d6c6fb4e3987009a722433cf2ad6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
/*
 * (C) Copyright 2005
 * 2N Telekomunikace, a.s. <www.2n.cz>
 * Ladislav Michl <michl@2n.cz>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#ifndef _NAND_H_
#define _NAND_H_

#include <config.h>

/*
 * All boards using a given driver must convert to self-init
 * at the same time, so do it here.  When all drivers are
 * converted, this will go away.
 */
#if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)
#define CONFIG_SYS_NAND_SELF_INIT
#endif

extern void nand_init(void);

#include <linux/compat.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/nand.h>

#ifdef CONFIG_SYS_NAND_SELF_INIT
void board_nand_init(void);
int nand_register(int devnum);
#else
extern int board_nand_init(struct nand_chip *nand);
#endif

typedef struct mtd_info nand_info_t;

extern int nand_curr_device;
extern nand_info_t nand_info[];

static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
{
	return info->read(info, ofs, *len, (size_t *)len, buf);
}

static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
{
	return info->write(info, ofs, *len, (size_t *)len, buf);
}

static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
{
	return info->block_isbad(info, ofs);
}

static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
{
	struct erase_info instr;

	instr.mtd = info;
	instr.addr = off;
	instr.len = size;
	instr.callback = 0;

	return info->erase(info, &instr);
}


/*****************************************************************************
 * declarations from nand_util.c
 ****************************************************************************/

struct nand_write_options {
	u_char *buffer;		/* memory block containing image to write */
	ulong length;		/* number of bytes to write */
	ulong offset;		/* start address in NAND */
	int quiet;		/* don't display progress messages */
	int autoplace;		/* if true use auto oob layout */
	int forcejffs2;		/* force jffs2 oob layout */
	int forceyaffs;		/* force yaffs oob layout */
	int noecc;		/* write without ecc */
	int writeoob;		/* image contains oob data */
	int pad;		/* pad to page size */
	int blockalign;		/* 1|2|4 set multiple of eraseblocks
				 * to align to */
};

typedef struct nand_write_options nand_write_options_t;
typedef struct mtd_oob_ops mtd_oob_ops_t;

struct nand_read_options {
	u_char *buffer;		/* memory block in which read image is written*/
	ulong length;		/* number of bytes to read */
	ulong offset;		/* start address in NAND */
	int quiet;		/* don't display progress messages */
	int readoob;		/* put oob data in image */
};

typedef struct nand_read_options nand_read_options_t;

struct nand_erase_options {
	loff_t length;		/* number of bytes to erase */
	loff_t offset;		/* first address in NAND to erase */
	int quiet;		/* don't display progress messages */
	int jffs2;		/* if true: format for jffs2 usage
				 * (write appropriate cleanmarker blocks) */
	int scrub;		/* if true, really clean NAND by erasing
				 * bad blocks (UNSAFE) */

	/* Don't include skipped bad blocks in size to be erased */
	int spread;
};

typedef struct nand_erase_options nand_erase_options_t;

int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
		       u_char *buffer);

#define WITH_YAFFS_OOB	(1 << 0) /* whether write with yaffs format. This flag
				  * is a 'mode' meaning it cannot be mixed with
				  * other flags */
#define WITH_DROP_FFS	(1 << 1) /* drop trailing all-0xff pages */

int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
			u_char *buffer, int flags);
int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
int nand_torture(nand_info_t *nand, loff_t offset);

#define NAND_LOCK_STATUS_TIGHT	0x01
#define NAND_LOCK_STATUS_UNLOCK 0x04

int nand_lock(nand_info_t *meminfo, int tight);
int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length,
	int allexcept);
int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);

int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
void nand_deselect(void);

#ifdef CONFIG_SYS_NAND_SELECT_DEVICE
void board_nand_select_device(struct nand_chip *nand, int chip);
#endif

__attribute__((noreturn)) void nand_boot(void);

#endif

#ifdef CONFIG_ENV_OFFSET_OOB
#define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
				    as block number*/
#define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
					stored as byte number */
#define ENV_OFFSET_SIZE 8
int get_nand_env_oob(nand_info_t *nand, unsigned long *result);
#endif
OpenPOWER on IntegriCloud