1 /* 2 * (C) Copyright 2005 3 * 2N Telekomunikace, a.s. <www.2n.cz> 4 * Ladislav Michl <michl@2n.cz> 5 * 6 * See file CREDITS for list of people who contributed to this 7 * project. 8 * 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. 12 */ 13 14 #ifndef _NAND_H_ 15 #define _NAND_H_ 16 17 #include <config.h> 18 19 /* 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. 23 */ 24 #ifdef CONFIG_SPL_BUILD 25 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_FSL_IFC) 26 #define CONFIG_SYS_NAND_SELF_INIT 27 #endif 28 #else 29 #if defined(CONFIG_NAND_FSL_ELBC) || defined(CONFIG_NAND_ATMEL)\ 30 || defined(CONFIG_NAND_FSL_IFC) 31 #define CONFIG_SYS_NAND_SELF_INIT 32 #endif 33 #endif 34 35 extern void nand_init(void); 36 37 #include <linux/compat.h> 38 #include <linux/mtd/mtd.h> 39 #include <linux/mtd/nand.h> 40 41 #ifdef CONFIG_SYS_NAND_SELF_INIT 42 void board_nand_init(void); 43 int nand_register(int devnum); 44 #else 45 extern int board_nand_init(struct nand_chip *nand); 46 #endif 47 48 typedef struct mtd_info nand_info_t; 49 50 extern int nand_curr_device; 51 extern nand_info_t nand_info[]; 52 53 static inline int nand_read(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) 54 { 55 return mtd_read(info, ofs, *len, (size_t *)len, buf); 56 } 57 58 static inline int nand_write(nand_info_t *info, loff_t ofs, size_t *len, u_char *buf) 59 { 60 return mtd_write(info, ofs, *len, (size_t *)len, buf); 61 } 62 63 static inline int nand_block_isbad(nand_info_t *info, loff_t ofs) 64 { 65 return mtd_block_isbad(info, ofs); 66 } 67 68 static inline int nand_erase(nand_info_t *info, loff_t off, size_t size) 69 { 70 struct erase_info instr; 71 72 instr.mtd = info; 73 instr.addr = off; 74 instr.len = size; 75 instr.callback = 0; 76 77 return mtd_erase(info, &instr); 78 } 79 80 81 /***************************************************************************** 82 * declarations from nand_util.c 83 ****************************************************************************/ 84 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 97 * to align to */ 98 }; 99 100 typedef struct nand_write_options nand_write_options_t; 101 typedef struct mtd_oob_ops mtd_oob_ops_t; 102 103 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 */ 109 }; 110 111 typedef struct nand_read_options nand_read_options_t; 112 113 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) */ 121 122 /* Don't include skipped bad blocks in size to be erased */ 123 int spread; 124 /* maximum size that actual may be in order to not exceed the buf */ 125 loff_t lim; 126 }; 127 128 typedef struct nand_erase_options nand_erase_options_t; 129 130 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); 132 133 #define WITH_YAFFS_OOB (1 << 0) /* whether write with yaffs format. This flag 134 * is a 'mode' meaning it cannot be mixed with 135 * other flags */ 136 #define WITH_DROP_FFS (1 << 1) /* drop trailing all-0xff pages */ 137 138 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); 142 143 #define NAND_LOCK_STATUS_TIGHT 0x01 144 #define NAND_LOCK_STATUS_UNLOCK 0x04 145 146 int nand_lock(nand_info_t *meminfo, int tight); 147 int nand_unlock(nand_info_t *meminfo, loff_t start, size_t length, 148 int allexcept); 149 int nand_get_lock_status(nand_info_t *meminfo, loff_t offset); 150 151 int nand_spl_load_image(uint32_t offs, unsigned int size, void *dst); 152 void nand_deselect(void); 153 154 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE 155 void board_nand_select_device(struct nand_chip *nand, int chip); 156 #endif 157 158 __attribute__((noreturn)) void nand_boot(void); 159 160 #endif 161 162 #ifdef CONFIG_ENV_OFFSET_OOB 163 #define ENV_OOB_MARKER 0x30425645 /*"EVB0" in little-endian -- offset is stored 164 as block number*/ 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); 169 #endif 170