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 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #ifndef _NAND_H_ 25 #define _NAND_H_ 26 27 #include <linux/mtd/compat.h> 28 #include <linux/mtd/mtd.h> 29 #include <linux/mtd/nand.h> 30 31 typedef struct mtd_info nand_info_t; 32 33 extern int nand_curr_device; 34 extern nand_info_t nand_info[]; 35 extern void nand_init(void); 36 37 static inline int nand_read(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) 38 { 39 return info->read(info, ofs, *len, (size_t *)len, buf); 40 } 41 42 static inline int nand_write(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) 43 { 44 return info->write(info, ofs, *len, (size_t *)len, buf); 45 } 46 47 static inline int nand_block_isbad(nand_info_t *info, ulong ofs) 48 { 49 return info->block_isbad(info, ofs); 50 } 51 52 static inline int nand_erase(nand_info_t *info, ulong off, ulong size) 53 { 54 struct erase_info instr; 55 56 instr.mtd = info; 57 instr.addr = off; 58 instr.len = size; 59 instr.callback = 0; 60 61 return info->erase(info, &instr); 62 } 63 64 65 /***************************************************************************** 66 * declarations from nand_util.c 67 ****************************************************************************/ 68 69 struct nand_write_options { 70 u_char *buffer; /* memory block containing image to write */ 71 ulong length; /* number of bytes to write */ 72 ulong offset; /* start address in NAND */ 73 int quiet; /* don't display progress messages */ 74 int autoplace; /* if true use auto oob layout */ 75 int forcejffs2; /* force jffs2 oob layout */ 76 int forceyaffs; /* force yaffs oob layout */ 77 int noecc; /* write without ecc */ 78 int writeoob; /* image contains oob data */ 79 int pad; /* pad to page size */ 80 int blockalign; /* 1|2|4 set multiple of eraseblocks 81 * to align to */ 82 }; 83 84 typedef struct nand_write_options nand_write_options_t; 85 86 struct nand_read_options { 87 u_char *buffer; /* memory block in which read image is written*/ 88 ulong length; /* number of bytes to read */ 89 ulong offset; /* start address in NAND */ 90 int quiet; /* don't display progress messages */ 91 int readoob; /* put oob data in image */ 92 }; 93 94 typedef struct nand_read_options nand_read_options_t; 95 96 struct nand_erase_options { 97 ulong length; /* number of bytes to erase */ 98 ulong offset; /* first address in NAND to erase */ 99 int quiet; /* don't display progress messages */ 100 int jffs2; /* if true: format for jffs2 usage 101 * (write appropriate cleanmarker blocks) */ 102 int scrub; /* if true, really clean NAND by erasing 103 * bad blocks (UNSAFE) */ 104 }; 105 106 typedef struct nand_erase_options nand_erase_options_t; 107 108 int nand_write_opts(nand_info_t *meminfo, const nand_write_options_t *opts); 109 110 int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts); 111 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts); 112 113 #define NAND_LOCK_STATUS_TIGHT 0x01 114 #define NAND_LOCK_STATUS_LOCK 0x02 115 #define NAND_LOCK_STATUS_UNLOCK 0x04 116 117 int nand_lock( nand_info_t *meminfo, int tight ); 118 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length ); 119 int nand_get_lock_status(nand_info_t *meminfo, ulong offset); 120 121 #ifdef CFG_NAND_SELECT_DEVICE 122 void board_nand_select_device(struct nand_chip *nand, int chip); 123 #endif 124 125 #endif 126