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Wolfgang Denk932394a2005-08-17 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
Wolfgang Denkac7eb8a2005-09-14 23:53:32 +020027#include <linux/mtd/compat.h>
Wolfgang Denk932394a2005-08-17 12:55:25 +020028#include <linux/mtd/mtd.h>
29#include <linux/mtd/nand.h>
30
31typedef struct mtd_info nand_info_t;
32
33extern int nand_curr_device;
34extern nand_info_t nand_info[];
Mike Frysingerd677b322007-06-22 10:34:12 +020035extern void nand_init(void);
Wolfgang Denk932394a2005-08-17 12:55:25 +020036
37static inline int nand_read(nand_info_t *info, ulong ofs, ulong *len, u_char *buf)
38{
Bartlomiej Sieka038ccac2006-02-24 09:37:22 +010039 return info->read(info, ofs, *len, (size_t *)len, buf);
Wolfgang Denk932394a2005-08-17 12:55:25 +020040}
41
42static inline int nand_write(nand_info_t *info, ulong ofs, ulong *len, u_char *buf)
43{
Bartlomiej Sieka038ccac2006-02-24 09:37:22 +010044 return info->write(info, ofs, *len, (size_t *)len, buf);
Wolfgang Denk932394a2005-08-17 12:55:25 +020045}
46
47static inline int nand_block_isbad(nand_info_t *info, ulong ofs)
48{
49 return info->block_isbad(info, ofs);
50}
51
52static inline int nand_erase(nand_info_t *info, ulong off, ulong size)
53{
Wolfgang Denk8e9655f2005-11-02 14:29:12 +010054 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);
Wolfgang Denk932394a2005-08-17 12:55:25 +020062}
63
Stefan Roese2255b2d2006-10-10 12:36:02 +020064
65/*****************************************************************************
66 * declarations from nand_util.c
67 ****************************************************************************/
68
69struct 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
84typedef struct nand_write_options nand_write_options_t;
85
86struct 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
94typedef struct nand_read_options nand_read_options_t;
95
96struct 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
106typedef struct nand_erase_options nand_erase_options_t;
107
108int nand_write_opts(nand_info_t *meminfo, const nand_write_options_t *opts);
109
110int nand_read_opts(nand_info_t *meminfo, const nand_read_options_t *opts);
111int 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
117int nand_lock( nand_info_t *meminfo, int tight );
118int nand_unlock( nand_info_t *meminfo, ulong start, ulong length );
119int nand_get_lock_status(nand_info_t *meminfo, ulong offset);
120
Stefan Roese43a2b0e2006-10-20 14:28:52 +0200121#ifdef CFG_NAND_SELECT_DEVICE
122void board_nand_select_device(struct nand_chip *nand, int chip);
123#endif
124
Wolfgang Denk932394a2005-08-17 12:55:25 +0200125#endif