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 #ifdef CONFIG_SPL_BUILD
25 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_FSL_IFC)
26 #define CONFIG_SYS_NAND_SELF_INIT
29 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\
30 || defined(CONFIG_NAND_FSL_IFC)
31 #define CONFIG_SYS_NAND_SELF_INIT
35 extern void nand_init(void);
37 #include <linux/compat.h>
38 #include <linux/mtd/mtd.h>
39 #include <linux/mtd/nand.h>
41 #ifdef CONFIG_SYS_NAND_SELF_INIT
42 void board_nand_init(void);
43 int nand_register(int devnum
);
45 extern int board_nand_init(struct nand_chip
*nand
);
48 typedef struct mtd_info nand_info_t
;
50 extern int nand_curr_device
;
51 extern nand_info_t nand_info
[];
53 static inline int nand_read(nand_info_t
*info
, loff_t ofs
, size_t *len
, u_char
*buf
)
55 return mtd_read(info
, ofs
, *len
, (size_t *)len
, buf
);
58 static inline int nand_write(nand_info_t
*info
, loff_t ofs
, size_t *len
, u_char
*buf
)
60 return mtd_write(info
, ofs
, *len
, (size_t *)len
, buf
);
63 static inline int nand_block_isbad(nand_info_t
*info
, loff_t ofs
)
65 return mtd_block_isbad(info
, ofs
);
68 static inline int nand_erase(nand_info_t
*info
, loff_t off
, size_t size
)
70 struct erase_info instr
;
77 return mtd_erase(info
, &instr
);
81 /*****************************************************************************
82 * declarations from nand_util.c
83 ****************************************************************************/
85 struct nand_write_options
{
86 u_char
*buffer
; /* memory block containing image to write */
87 ulong length
; /* number of bytes to write */
88 ulong offset
; /* start address in NAND */
89 int quiet
; /* don't display progress messages */
90 int autoplace
; /* if true use auto oob layout */
91 int forcejffs2
; /* force jffs2 oob layout */
92 int forceyaffs
; /* force yaffs oob layout */
93 int noecc
; /* write without ecc */
94 int writeoob
; /* image contains oob data */
95 int pad
; /* pad to page size */
96 int blockalign
; /* 1|2|4 set multiple of eraseblocks
100 typedef struct nand_write_options nand_write_options_t
;
101 typedef struct mtd_oob_ops mtd_oob_ops_t
;
103 struct nand_read_options
{
104 u_char
*buffer
; /* memory block in which read image is written*/
105 ulong length
; /* number of bytes to read */
106 ulong offset
; /* start address in NAND */
107 int quiet
; /* don't display progress messages */
108 int readoob
; /* put oob data in image */
111 typedef struct nand_read_options nand_read_options_t
;
113 struct nand_erase_options
{
114 loff_t length
; /* number of bytes to erase */
115 loff_t offset
; /* first address in NAND to erase */
116 int quiet
; /* don't display progress messages */
117 int jffs2
; /* if true: format for jffs2 usage
118 * (write appropriate cleanmarker blocks) */
119 int scrub
; /* if true, really clean NAND by erasing
120 * bad blocks (UNSAFE) */
122 /* Don't include skipped bad blocks in size to be erased */
124 /* maximum size that actual may be in order to not exceed the buf */
128 typedef struct nand_erase_options nand_erase_options_t
;
130 int nand_read_skip_bad(nand_info_t
*nand
, loff_t offset
, size_t *length
,
131 size_t *actual
, loff_t lim
, u_char
*buffer
);
133 #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag
134 * is a 'mode' meaning it cannot be mixed with
136 #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */
138 int nand_write_skip_bad(nand_info_t
*nand
, loff_t offset
, size_t *length
,
139 size_t *actual
, loff_t lim
, u_char
*buffer
, int flags
);
140 int nand_erase_opts(nand_info_t
*meminfo
, const nand_erase_options_t
*opts
);
141 int nand_torture(nand_info_t
*nand
, loff_t offset
);
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
);