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 36 static inline int nand_read(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) 37 { 38 return info->read(info, ofs, *len, (size_t *)len, buf); 39 } 40 41 static inline int nand_write(nand_info_t *info, ulong ofs, ulong *len, u_char *buf) 42 { 43 return info->write(info, ofs, *len, (size_t *)len, buf); 44 } 45 46 static inline int nand_block_isbad(nand_info_t *info, ulong ofs) 47 { 48 return info->block_isbad(info, ofs); 49 } 50 51 static inline int nand_erase(nand_info_t *info, ulong off, ulong size) 52 { 53 struct erase_info instr; 54 55 instr.mtd = info; 56 instr.addr = off; 57 instr.len = size; 58 instr.callback = 0; 59 60 return info->erase(info, &instr); 61 } 62 63 64 /***************************************************************************** 65 * declarations from nand_util.c 66 ****************************************************************************/ 67 68 struct nand_write_options { 69 u_char *buffer; /* memory block containing image to write */ 70 ulong length; /* number of bytes to write */ 71 ulong offset; /* start address in NAND */ 72 int quiet; /* don't display progress messages */ 73 int autoplace; /* if true use auto oob layout */ 74 int forcejffs2; /* force jffs2 oob layout */ 75 int forceyaffs; /* force yaffs oob layout */ 76 int noecc; /* write without ecc */ 77 int writeoob; /* image contains oob data */ 78 int pad; /* pad to page size */ 79 int blockalign; /* 1|2|4 set multiple of eraseblocks 80 * to align to */ 81 }; 82 83 typedef struct nand_write_options nand_write_options_t; 84 85 struct nand_read_options { 86 u_char *buffer; /* memory block in which read image is written*/ 87 ulong length; /* number of bytes to read */ 88 ulong offset; /* start address in NAND */ 89 int quiet; /* don't display progress messages */ 90 int readoob; /* put oob data in image */ 91 }; 92 93 typedef struct nand_read_options nand_read_options_t; 94 95 struct nand_erase_options { 96 ulong length; /* number of bytes to erase */ 97 ulong offset; /* first address in NAND to erase */ 98 int quiet; /* don't display progress messages */ 99 int jffs2; /* if true: format for jffs2 usage 100 * (write appropriate cleanmarker blocks) */ 101 int scrub; /* if true, really clean NAND by erasing 102 * bad blocks (UNSAFE) */ 103 }; 104 105 typedef struct nand_erase_options nand_erase_options_t; 106 107 int nand_write_opts(nand_info_t *meminfo, const nand_write_options_t *opts); 108 109 int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts); 110 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts); 111 112 #define NAND_LOCK_STATUS_TIGHT 0x01 113 #define NAND_LOCK_STATUS_LOCK 0x02 114 #define NAND_LOCK_STATUS_UNLOCK 0x04 115 116 int nand_lock( nand_info_t *meminfo, int tight ); 117 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length ); 118 int nand_get_lock_status(nand_info_t *meminfo, ulong offset); 119 120 #ifdef CFG_NAND_SELECT_DEVICE 121 void board_nand_select_device(struct nand_chip *nand, int chip); 122 #endif 123 124 #endif 125