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.
20 * All boards using a given driver must convert to self-init
21 * at the same time, so do it here. When all drivers are
22 * converted, this will go away.
24 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\
25 || defined(CONFIG_NAND_FSL_IFC)
26 #define CONFIG_SYS_NAND_SELF_INIT
29 extern void nand_init(void);
31 #include <linux/compat.h>
32 #include <linux/mtd/mtd.h>
33 #include <linux/mtd/nand.h>
35 #ifdef CONFIG_SYS_NAND_SELF_INIT
36 void board_nand_init(void);
37 int nand_register(int devnum);
39 extern int board_nand_init(struct nand_chip *nand);
42 typedef struct mtd_info nand_info_t;
44 extern int nand_curr_device;
45 extern nand_info_t nand_info[];
47 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
49 return mtd_read(info, ofs, *len, (size_t *)len, buf);
52 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf)
54 return mtd_write(info, ofs, *len, (size_t *)len, buf);
57 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs)
59 return mtd_block_isbad(info, ofs);
62 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size)
64 struct erase_info instr;
71 return mtd_erase(info, &instr);
75 /*****************************************************************************
76 * declarations from nand_util.c
77 ****************************************************************************/
79 struct nand_write_options {
80 u_char *buffer; /* memory block containing image to write */
81 ulong length; /* number of bytes to write */
82 ulong offset; /* start address in NAND */
83 int quiet; /* don't display progress messages */
84 int autoplace; /* if true use auto oob layout */
85 int forcejffs2; /* force jffs2 oob layout */
86 int forceyaffs; /* force yaffs oob layout */
87 int noecc; /* write without ecc */
88 int writeoob; /* image contains oob data */
89 int pad; /* pad to page size */
90 int blockalign; /* 1|2|4 set multiple of eraseblocks
94 typedef struct nand_write_options nand_write_options_t;
95 typedef struct mtd_oob_ops mtd_oob_ops_t;
97 struct nand_read_options {
98 u_char *buffer; /* memory block in which read image is written*/
99 ulong length; /* number of bytes to read */
100 ulong offset; /* start address in NAND */
101 int quiet; /* don't display progress messages */
102 int readoob; /* put oob data in image */
105 typedef struct nand_read_options nand_read_options_t;
107 struct nand_erase_options {
108 loff_t length; /* number of bytes to erase */
109 loff_t offset; /* first address in NAND to erase */
110 int quiet; /* don't display progress messages */
111 int jffs2; /* if true: format for jffs2 usage
112 * (write appropriate cleanmarker blocks) */
113 int scrub; /* if true, really clean NAND by erasing
114 * bad blocks (UNSAFE) */
116 /* Don't include skipped bad blocks in size to be erased */
118 /* maximum size that actual may be in order to not exceed the buf */
122 typedef struct nand_erase_options nand_erase_options_t;
124 int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
125 size_t *actual, loff_t lim, u_char *buffer);
127 #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag
128 * is a 'mode' meaning it cannot be mixed with
130 #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */
132 int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
133 size_t *actual, loff_t lim, u_char *buffer, int flags);
134 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
135 int nand_torture(nand_info_t *nand, loff_t offset);
137 #define NAND_LOCK_STATUS_TIGHT 0x01
138 #define NAND_LOCK_STATUS_UNLOCK 0x04
140 int nand_lock(nand_info_t *meminfo, int tight);
141 int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length,
143 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset);
145 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst);
146 void nand_deselect(void);
148 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
149 void board_nand_select_device(struct nand_chip *nand, int chip);
152 __attribute__((noreturn)) void nand_boot(void);
156 #ifdef CONFIG_ENV_OFFSET_OOB
157 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored
159 #define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is
160 stored as byte number */
161 #define ENV_OFFSET_SIZE 8
162 int get_nand_env_oob(nand_info_t *nand, unsigned long *result);