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.
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.
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,
30 * All boards using a given driver must convert to self-init
31 * at the same time, so do it here. When all drivers are
32 * converted, this will go away.
34 #if defined(CONFIG_NAND_FSL_ELBC)
35 #define CONFIG_SYS_NAND_SELF_INIT
37 #if defined(CONFIG_NAND_MXC)
38 #define CONFIG_SYS_NAND_SELF_INIT
41 extern void nand_init(void);
43 #include <linux/compat.h>
44 #include <linux/mtd/mtd.h>
45 #include <linux/mtd/nand.h>
47 #ifdef CONFIG_SYS_NAND_SELF_INIT
48 void board_nand_init(void);
49 int nand_register(int devnum);
51 extern int board_nand_init(struct nand_chip *nand);
54 typedef struct mtd_info nand_info_t;
56 extern int nand_curr_device;
57 extern nand_info_t nand_info[];
59 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
61 return info->read(info, ofs, *len, (size_t *)len, buf);
64 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
66 return info->write(info, ofs, *len, (size_t *)len, buf);
69 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
71 return info->block_isbad(info, ofs);
74 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
76 struct erase_info instr;
83 return info->erase(info, &instr);
87 /*****************************************************************************
88 * declarations from nand_util.c
89 ****************************************************************************/
91 struct nand_write_options {
92 u_char *buffer; /* memory block containing image to write */
93 ulong length; /* number of bytes to write */
94 ulong offset; /* start address in NAND */
95 int quiet; /* don't display progress messages */
96 int autoplace; /* if true use auto oob layout */
97 int forcejffs2; /* force jffs2 oob layout */
98 int forceyaffs; /* force yaffs oob layout */
99 int noecc; /* write without ecc */
100 int writeoob; /* image contains oob data */
101 int pad; /* pad to page size */
102 int blockalign; /* 1|2|4 set multiple of eraseblocks
106 typedef struct nand_write_options nand_write_options_t;
107 typedef struct mtd_oob_ops mtd_oob_ops_t;
109 struct nand_read_options {
110 u_char *buffer; /* memory block in which read image is written*/
111 ulong length; /* number of bytes to read */
112 ulong offset; /* start address in NAND */
113 int quiet; /* don't display progress messages */
114 int readoob; /* put oob data in image */
117 typedef struct nand_read_options nand_read_options_t;
119 struct nand_erase_options {
120 loff_t length; /* number of bytes to erase */
121 loff_t offset; /* first address in NAND to erase */
122 int quiet; /* don't display progress messages */
123 int jffs2; /* if true: format for jffs2 usage
124 * (write appropriate cleanmarker blocks) */
125 int scrub; /* if true, really clean NAND by erasing
126 * bad blocks (UNSAFE) */
128 /* Don't include skipped bad blocks in size to be erased */
132 typedef struct nand_erase_options nand_erase_options_t;
134 int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
137 #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag
138 * is a 'mode' meaning it cannot be mixed with
140 #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */
142 int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
143 u_char *buffer, int flags);
144 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
146 #define NAND_LOCK_STATUS_TIGHT 0x01
147 #define NAND_LOCK_STATUS_LOCK 0x02
148 #define NAND_LOCK_STATUS_UNLOCK 0x04
150 int nand_lock( nand_info_t *meminfo, int tight );
151 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
152 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
154 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
155 void nand_deselect(void);
157 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
158 void board_nand_select_device(struct nand_chip *nand, int chip);
161 __attribute__((noreturn)) void nand_boot(void);
165 #ifdef CONFIG_ENV_OFFSET_OOB
166 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
168 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
169 stored as byte number */
170 #define ENV_OFFSET_SIZE 8
171 int get_nand_env_oob(nand_info_t *nand, unsigned long *result);