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) || defined(CONFIG_NAND_ATMEL)
35 #define CONFIG_SYS_NAND_SELF_INIT
38 extern void nand_init(void);
40 #include <linux/compat.h>
41 #include <linux/mtd/mtd.h>
42 #include <linux/mtd/nand.h>
44 #ifdef CONFIG_SYS_NAND_SELF_INIT
45 void board_nand_init(void);
46 int nand_register(int devnum);
48 extern int board_nand_init(struct nand_chip *nand);
51 typedef struct mtd_info nand_info_t;
53 extern int nand_curr_device;
54 extern nand_info_t nand_info[];
56 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
58 return info->read(info, ofs, *len, (size_t *)len, buf);
61 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
63 return info->write(info, ofs, *len, (size_t *)len, buf);
66 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
68 return info->block_isbad(info, ofs);
71 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
73 struct erase_info instr;
80 return info->erase(info, &instr);
84 /*****************************************************************************
85 * declarations from nand_util.c
86 ****************************************************************************/
88 struct nand_write_options {
89 u_char *buffer; /* memory block containing image to write */
90 ulong length; /* number of bytes to write */
91 ulong offset; /* start address in NAND */
92 int quiet; /* don't display progress messages */
93 int autoplace; /* if true use auto oob layout */
94 int forcejffs2; /* force jffs2 oob layout */
95 int forceyaffs; /* force yaffs oob layout */
96 int noecc; /* write without ecc */
97 int writeoob; /* image contains oob data */
98 int pad; /* pad to page size */
99 int blockalign; /* 1|2|4 set multiple of eraseblocks
103 typedef struct nand_write_options nand_write_options_t;
104 typedef struct mtd_oob_ops mtd_oob_ops_t;
106 struct nand_read_options {
107 u_char *buffer; /* memory block in which read image is written*/
108 ulong length; /* number of bytes to read */
109 ulong offset; /* start address in NAND */
110 int quiet; /* don't display progress messages */
111 int readoob; /* put oob data in image */
114 typedef struct nand_read_options nand_read_options_t;
116 struct nand_erase_options {
117 loff_t length; /* number of bytes to erase */
118 loff_t offset; /* first address in NAND to erase */
119 int quiet; /* don't display progress messages */
120 int jffs2; /* if true: format for jffs2 usage
121 * (write appropriate cleanmarker blocks) */
122 int scrub; /* if true, really clean NAND by erasing
123 * bad blocks (UNSAFE) */
125 /* Don't include skipped bad blocks in size to be erased */
129 typedef struct nand_erase_options nand_erase_options_t;
131 int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
134 #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag
135 * is a 'mode' meaning it cannot be mixed with
137 #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */
139 int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
140 u_char *buffer, int flags);
141 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
143 #define NAND_LOCK_STATUS_TIGHT 0x01
144 #define NAND_LOCK_STATUS_UNLOCK 0x04
146 int nand_lock(nand_info_t *meminfo, int tight);
147 int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length,
149 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
151 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
152 void nand_deselect(void);
154 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
155 void board_nand_select_device(struct nand_chip *nand, int chip);
158 __attribute__((noreturn)) void nand_boot(void);
162 #ifdef CONFIG_ENV_OFFSET_OOB
163 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
165 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
166 stored as byte number */
167 #define ENV_OFFSET_SIZE 8
168 int get_nand_env_oob(nand_info_t *nand, unsigned long *result);