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nand: Introduce CONFIG_SYS_NAND_SELF_INIT
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1 /*
2  * (C) Copyright 2005
3  * 2N Telekomunikace, a.s. <www.2n.cz>
4  * Ladislav Michl <michl@2n.cz>
5  *
6  * See file CREDITS for list of people who contributed to this
7  * project.
8  *
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.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23
24 #ifndef _NAND_H_
25 #define _NAND_H_
26
27 extern void nand_init(void);
28
29 #include <linux/mtd/compat.h>
30 #include <linux/mtd/mtd.h>
31 #include <linux/mtd/nand.h>
32
33 #ifdef CONFIG_SYS_NAND_SELF_INIT
34 void board_nand_init(void);
35 int nand_register(int devnum);
36 #else
37 extern int board_nand_init(struct nand_chip *nand);
38 #endif
39
40 typedef struct mtd_info nand_info_t;
41
42 extern int nand_curr_device;
43 extern nand_info_t nand_info[];
44
45 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
46 {
47         return info->read(info, ofs, *len, (size_t *)len, buf);
48 }
49
50 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
51 {
52         return info->write(info, ofs, *len, (size_t *)len, buf);
53 }
54
55 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
56 {
57         return info->block_isbad(info, ofs);
58 }
59
60 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
61 {
62         struct erase_info instr;
63
64         instr.mtd = info;
65         instr.addr = off;
66         instr.len = size;
67         instr.callback = 0;
68
69         return info->erase(info, &instr);
70 }
71
72
73 /*****************************************************************************
74  * declarations from nand_util.c
75  ****************************************************************************/
76
77 struct nand_write_options {
78         u_char *buffer;         /* memory block containing image to write */
79         ulong length;           /* number of bytes to write */
80         ulong offset;           /* start address in NAND */
81         int quiet;              /* don't display progress messages */
82         int autoplace;          /* if true use auto oob layout */
83         int forcejffs2;         /* force jffs2 oob layout */
84         int forceyaffs;         /* force yaffs oob layout */
85         int noecc;              /* write without ecc */
86         int writeoob;           /* image contains oob data */
87         int pad;                /* pad to page size */
88         int blockalign;         /* 1|2|4 set multiple of eraseblocks
89                                  * to align to */
90 };
91
92 typedef struct nand_write_options nand_write_options_t;
93 typedef struct mtd_oob_ops mtd_oob_ops_t;
94
95 struct nand_read_options {
96         u_char *buffer;         /* memory block in which read image is written*/
97         ulong length;           /* number of bytes to read */
98         ulong offset;           /* start address in NAND */
99         int quiet;              /* don't display progress messages */
100         int readoob;            /* put oob data in image */
101 };
102
103 typedef struct nand_read_options nand_read_options_t;
104
105 struct nand_erase_options {
106         loff_t length;          /* number of bytes to erase */
107         loff_t offset;          /* first address in NAND to erase */
108         int quiet;              /* don't display progress messages */
109         int jffs2;              /* if true: format for jffs2 usage
110                                  * (write appropriate cleanmarker blocks) */
111         int scrub;              /* if true, really clean NAND by erasing
112                                  * bad blocks (UNSAFE) */
113
114         /* Don't include skipped bad blocks in size to be erased */
115         int spread;
116 };
117
118 typedef struct nand_erase_options nand_erase_options_t;
119
120 int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
121                        u_char *buffer);
122
123 #define WITH_YAFFS_OOB  (1 << 0) /* whether write with yaffs format. This flag
124                                   * is a 'mode' meaning it cannot be mixed with
125                                   * other flags */
126 #define WITH_DROP_FFS   (1 << 1) /* drop trailing all-0xff pages */
127
128 int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
129                         u_char *buffer, int flags);
130 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
131
132 #define NAND_LOCK_STATUS_TIGHT  0x01
133 #define NAND_LOCK_STATUS_LOCK   0x02
134 #define NAND_LOCK_STATUS_UNLOCK 0x04
135
136 int nand_lock( nand_info_t *meminfo, int tight );
137 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
138 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
139
140 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
141 void nand_deselect(void);
142
143 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
144 void board_nand_select_device(struct nand_chip *nand, int chip);
145 #endif
146
147 __attribute__((noreturn)) void nand_boot(void);
148
149 #endif
150
151 #ifdef CONFIG_ENV_OFFSET_OOB
152 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
153                                     as block number*/
154 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
155                                         stored as byte number */
156 #define ENV_OFFSET_SIZE 8
157 int get_nand_env_oob(nand_info_t *nand, unsigned long *result);
158 #endif