| /* |
| * (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. |
| */ |
| |
| #ifndef _NAND_H_ |
| #define _NAND_H_ |
| |
| #include <config.h> |
| |
| /* |
| * All boards using a given driver must convert to self-init |
| * at the same time, so do it here. When all drivers are |
| * converted, this will go away. |
| */ |
| #ifdef CONFIG_SPL_BUILD |
| #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_FSL_IFC) |
| #define CONFIG_SYS_NAND_SELF_INIT |
| #endif |
| #else |
| #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\ |
| || defined(CONFIG_NAND_FSL_IFC) |
| #define CONFIG_SYS_NAND_SELF_INIT |
| #endif |
| #endif |
| |
| extern void nand_init(void); |
| |
| #include <linux/compat.h> |
| #include <linux/mtd/mtd.h> |
| #include <linux/mtd/nand.h> |
| |
| #ifdef CONFIG_SYS_NAND_SELF_INIT |
| void board_nand_init(void); |
| int nand_register(int devnum); |
| #else |
| extern int board_nand_init(struct nand_chip *nand); |
| #endif |
| |
| 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 mtd_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 mtd_write(info, ofs, *len, (size_t *)len, buf); |
| } |
| |
| static inline int nand_block_isbad(nand_info_t *info, loff_t ofs) |
| { |
| return mtd_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 mtd_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; |
| /* maximum size that actual may be in order to not exceed the buf */ |
| loff_t lim; |
| }; |
| |
| typedef struct nand_erase_options nand_erase_options_t; |
| |
| int nand_read_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, |
| size_t *actual, loff_t lim, u_char *buffer); |
| |
| #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag |
| * is a 'mode' meaning it cannot be mixed with |
| * other flags */ |
| #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */ |
| int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length, |
| size_t *actual, loff_t lim, u_char *buffer, int flags); |
| int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts); |
| int nand_torture(nand_info_t *nand, loff_t offset); |
| |
| #define NAND_LOCK_STATUS_TIGHT 0x01 |
| #define NAND_LOCK_STATUS_UNLOCK 0x04 |
| |
| int nand_lock(nand_info_t *meminfo, int tight); |
| int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length, |
| int allexcept); |
| int nand_get_lock_status(nand_info_t *meminfo, loff_t offset); |
| |
| int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst); |
| void nand_deselect(void); |
| nand_info_t *get_nand_dev_by_index(int dev); |
| #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 |
| int spl_nand_erase_one(int block, int page); |