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Wolfgang Denk2f9b7e42005-08-17 12:55:25 +02001/*
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
Scott Wood8238dd42008-07-09 17:47:52 -050027extern void nand_init(void);
28
29#ifndef CFG_NAND_LEGACY
Wolfgang Denk7b9bc3a2005-09-14 23:53:32 +020030#include <linux/mtd/compat.h>
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020031#include <linux/mtd/mtd.h>
32#include <linux/mtd/nand.h>
33
34typedef struct mtd_info nand_info_t;
35
36extern int nand_curr_device;
37extern nand_info_t nand_info[];
38
Wolfgang Denk9a11ccd2008-04-28 12:08:18 +020039static inline int nand_read(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020040{
Bartlomiej Sieka6eed2ab2006-02-24 09:37:22 +010041 return info->read(info, ofs, *len, (size_t *)len, buf);
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020042}
43
Wolfgang Denk9a11ccd2008-04-28 12:08:18 +020044static inline int nand_write(nand_info_t *info, off_t ofs, size_t *len, u_char *buf)
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020045{
Bartlomiej Sieka6eed2ab2006-02-24 09:37:22 +010046 return info->write(info, ofs, *len, (size_t *)len, buf);
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020047}
48
Wolfgang Denk9a11ccd2008-04-28 12:08:18 +020049static inline int nand_block_isbad(nand_info_t *info, off_t ofs)
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020050{
51 return info->block_isbad(info, ofs);
52}
53
Wolfgang Denk9a11ccd2008-04-28 12:08:18 +020054static inline int nand_erase(nand_info_t *info, off_t off, size_t size)
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020055{
Wolfgang Denk9a08dd12005-11-02 14:29:12 +010056 struct erase_info instr;
57
58 instr.mtd = info;
59 instr.addr = off;
60 instr.len = size;
61 instr.callback = 0;
62
63 return info->erase(info, &instr);
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +020064}
65
Stefan Roesed351b2b2006-10-10 12:36:02 +020066
67/*****************************************************************************
68 * declarations from nand_util.c
69 ****************************************************************************/
70
71struct nand_write_options {
72 u_char *buffer; /* memory block containing image to write */
73 ulong length; /* number of bytes to write */
74 ulong offset; /* start address in NAND */
75 int quiet; /* don't display progress messages */
76 int autoplace; /* if true use auto oob layout */
77 int forcejffs2; /* force jffs2 oob layout */
78 int forceyaffs; /* force yaffs oob layout */
79 int noecc; /* write without ecc */
80 int writeoob; /* image contains oob data */
81 int pad; /* pad to page size */
82 int blockalign; /* 1|2|4 set multiple of eraseblocks
83 * to align to */
84};
85
86typedef struct nand_write_options nand_write_options_t;
87
88struct nand_read_options {
89 u_char *buffer; /* memory block in which read image is written*/
90 ulong length; /* number of bytes to read */
91 ulong offset; /* start address in NAND */
92 int quiet; /* don't display progress messages */
93 int readoob; /* put oob data in image */
94};
95
96typedef struct nand_read_options nand_read_options_t;
97
98struct nand_erase_options {
99 ulong length; /* number of bytes to erase */
100 ulong offset; /* first address in NAND to erase */
101 int quiet; /* don't display progress messages */
102 int jffs2; /* if true: format for jffs2 usage
103 * (write appropriate cleanmarker blocks) */
104 int scrub; /* if true, really clean NAND by erasing
105 * bad blocks (UNSAFE) */
106};
107
108typedef struct nand_erase_options nand_erase_options_t;
109
110int nand_write_opts(nand_info_t *meminfo, const nand_write_options_t *opts);
111
112int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts);
113int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts);
114
115#define NAND_LOCK_STATUS_TIGHT 0x01
116#define NAND_LOCK_STATUS_LOCK 0x02
117#define NAND_LOCK_STATUS_UNLOCK 0x04
118
119int nand_lock( nand_info_t *meminfo, int tight );
120int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
121int nand_get_lock_status(nand_info_t *meminfo, ulong offset);
122
Stefan Roese3cdd3fd2006-10-20 14:28:52 +0200123#ifdef CFG_NAND_SELECT_DEVICE
124void board_nand_select_device(struct nand_chip *nand, int chip);
125#endif
126
Scott Wood8238dd42008-07-09 17:47:52 -0500127#endif /* !CFG_NAND_LEGACY */
Wolfgang Denk2f9b7e42005-08-17 12:55:25 +0200128#endif