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 extern void nand_init(void); 28 29 #ifndef CONFIG_NAND_LEGACY 30 #include <linux/mtd/compat.h> 31 #include <linux/mtd/mtd.h> 32 #include <linux/mtd/nand.h> 33 34 extern int board_nand_init(struct nand_chip *nand); 35 36 typedef struct mtd_info nand_info_t; 37 38 extern int nand_curr_device; 39 extern nand_info_t nand_info[]; 40 41 static inline int nand_read(nand_info_t *info, off_t ofs, size_t *len, u_char *buf) 42 { 43 return info->read(info, ofs, *len, (size_t *)len, buf); 44 } 45 46 static inline int nand_write(nand_info_t *info, off_t ofs, size_t *len, u_char *buf) 47 { 48 return info->write(info, ofs, *len, (size_t *)len, buf); 49 } 50 51 static inline int nand_block_isbad(nand_info_t *info, off_t ofs) 52 { 53 return info->block_isbad(info, ofs); 54 } 55 56 static inline int nand_erase(nand_info_t *info, off_t off, size_t size) 57 { 58 struct erase_info instr; 59 60 instr.mtd = info; 61 instr.addr = off; 62 instr.len = size; 63 instr.callback = 0; 64 65 return info->erase(info, &instr); 66 } 67 68 69 /***************************************************************************** 70 * declarations from nand_util.c 71 ****************************************************************************/ 72 73 struct nand_write_options { 74 u_char *buffer; /* memory block containing image to write */ 75 ulong length; /* number of bytes to write */ 76 ulong offset; /* start address in NAND */ 77 int quiet; /* don't display progress messages */ 78 int autoplace; /* if true use auto oob layout */ 79 int forcejffs2; /* force jffs2 oob layout */ 80 int forceyaffs; /* force yaffs oob layout */ 81 int noecc; /* write without ecc */ 82 int writeoob; /* image contains oob data */ 83 int pad; /* pad to page size */ 84 int blockalign; /* 1|2|4 set multiple of eraseblocks 85 * to align to */ 86 }; 87 88 typedef struct nand_write_options nand_write_options_t; 89 typedef struct mtd_oob_ops mtd_oob_ops_t; 90 91 struct nand_read_options { 92 u_char *buffer; /* memory block in which read image is written*/ 93 ulong length; /* number of bytes to read */ 94 ulong offset; /* start address in NAND */ 95 int quiet; /* don't display progress messages */ 96 int readoob; /* put oob data in image */ 97 }; 98 99 typedef struct nand_read_options nand_read_options_t; 100 101 struct nand_erase_options { 102 ulong length; /* number of bytes to erase */ 103 ulong offset; /* first address in NAND to erase */ 104 int quiet; /* don't display progress messages */ 105 int jffs2; /* if true: format for jffs2 usage 106 * (write appropriate cleanmarker blocks) */ 107 int scrub; /* if true, really clean NAND by erasing 108 * bad blocks (UNSAFE) */ 109 }; 110 111 typedef struct nand_erase_options nand_erase_options_t; 112 113 int nand_read_skip_bad(nand_info_t *nand, size_t offset, size_t *length, 114 u_char *buffer); 115 int nand_write_skip_bad(nand_info_t *nand, size_t offset, size_t *length, 116 u_char *buffer); 117 int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts); 118 119 #define NAND_LOCK_STATUS_TIGHT 0x01 120 #define NAND_LOCK_STATUS_LOCK 0x02 121 #define NAND_LOCK_STATUS_UNLOCK 0x04 122 123 int nand_lock( nand_info_t *meminfo, int tight ); 124 int nand_unlock( nand_info_t *meminfo, ulong start, ulong length ); 125 int nand_get_lock_status(nand_info_t *meminfo, ulong offset); 126 127 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE 128 void board_nand_select_device(struct nand_chip *nand, int chip); 129 #endif 130 131 __attribute__((noreturn)) void nand_boot(void); 132 133 #endif /* !CONFIG_NAND_LEGACY */ 134 #endif 135