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Diffstat (limited to 'u-boot/include/nand.h')
| -rw-r--r-- | u-boot/include/nand.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/u-boot/include/nand.h b/u-boot/include/nand.h new file mode 100644 index 0000000..7459bd0 --- /dev/null +++ b/u-boot/include/nand.h @@ -0,0 +1,144 @@ +/* + * (C) Copyright 2005 + * 2N Telekomunikace, a.s. <www.2n.cz> + * Ladislav Michl <michl@2n.cz> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _NAND_H_ +#define _NAND_H_ + +extern void nand_init(void); + +#include <linux/mtd/compat.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> + +extern int board_nand_init(struct nand_chip *nand); + +typedef struct mtd_info nand_info_t; + +extern int nand_curr_device; +extern nand_info_t nand_info[]; + +static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) +{ + return info->read(info, ofs, *len, (size_t *)len, buf); +} + +static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) +{ + return info->write(info, ofs, *len, (size_t *)len, buf); +} + +static inline int nand_block_isbad(nand_info_t *info, loff_t ofs) +{ + return info->block_isbad(info, ofs); +} + +static inline int nand_erase(nand_info_t *info, loff_t off, size_t size) +{ + struct erase_info instr; + + instr.mtd = info; + instr.addr = off; + instr.len = size; + instr.callback = 0; + + return info->erase(info, &instr); +} + + +/***************************************************************************** + * declarations from nand_util.c + ****************************************************************************/ + +struct nand_write_options { + u_char *buffer; /* memory block containing image to write */ + ulong length; /* number of bytes to write */ + ulong offset; /* start address in NAND */ + int quiet; /* don't display progress messages */ + int autoplace; /* if true use auto oob layout */ + int forcejffs2; /* force jffs2 oob layout */ + int forceyaffs; /* force yaffs oob layout */ + int noecc; /* write without ecc */ + int writeoob; /* image contains oob data */ + int pad; /* pad to page size */ + int blockalign; /* 1|2|4 set multiple of eraseblocks + * to align to */ +}; + +typedef struct nand_write_options nand_write_options_t; +typedef struct mtd_oob_ops mtd_oob_ops_t; + +struct nand_read_options { + u_char *buffer; /* memory block in which read image is written*/ + ulong length; /* number of bytes to read */ + ulong offset; /* start address in NAND */ + int quiet; /* don't display progress messages */ + int readoob; /* put oob data in image */ +}; + +typedef struct nand_read_options nand_read_options_t; + +struct nand_erase_options { + loff_t length; /* number of bytes to erase */ + loff_t offset; /* first address in NAND to erase */ + int quiet; /* don't display progress messages */ + int jffs2; /* if true: format for jffs2 usage + * (write appropriate cleanmarker blocks) */ + int scrub; /* if true, really clean NAND by erasing + * bad blocks (UNSAFE) */ + + /* Don't include skipped bad blocks in size to be erased */ + int spread; +}; + +typedef struct nand_erase_options nand_erase_options_t; + +int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, + u_char *buffer); +int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, + u_char *buffer, int withoob); +int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts); + +#define NAND_LOCK_STATUS_TIGHT 0x01 +#define NAND_LOCK_STATUS_LOCK 0x02 +#define NAND_LOCK_STATUS_UNLOCK 0x04 + +int nand_lock( nand_info_t *meminfo, int tight ); +int nand_unlock( nand_info_t *meminfo, ulong start, ulong length ); +int nand_get_lock_status(nand_info_t *meminfo, loff_t offset); + +#ifdef CONFIG_SYS_NAND_SELECT_DEVICE +void board_nand_select_device(struct nand_chip *nand, int chip); +#endif + +__attribute__((noreturn)) void nand_boot(void); + +#endif + +#ifdef CONFIG_ENV_OFFSET_OOB +#define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored + as block number*/ +#define ENV_OOB_MARKER_OLD 0x30564e45 /*"ENV0" in little-endian -- offset is + stored as byte number */ +#define ENV_OFFSET_SIZE 8 +int get_nand_env_oob(nand_info_t *nand, unsigned long *result); +#endif |