1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/***************************************************************************
* Copyright (C) 2007 by Dominic Rath <Dominic.Rath@gmx.de> *
* Copyright (C) 2002 Thomas Gleixner <tglx@linutronix.de> *
* Copyright (C) 2009 Zachary T Welch <zw@superlucidity.net> *
* *
* Partially based on drivers/mtd/nand_ids.c from Linux. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "core.h"
#include "fileio.h"
static struct nand_ecclayout nand_oob_16 = {
.eccbytes = 6,
.eccpos = {0, 1, 2, 3, 6, 7},
.oobfree = {
{.offset = 8,
.length = 8}
}
};
static struct nand_ecclayout nand_oob_64 = {
.eccbytes = 24,
.eccpos = {
40, 41, 42, 43, 44, 45, 46, 47,
48, 49, 50, 51, 52, 53, 54, 55,
56, 57, 58, 59, 60, 61, 62, 63
},
.oobfree = {
{.offset = 2,
.length = 38}
}
};
void nand_fileio_init(struct nand_fileio_state *state)
{
memset(state, 0, sizeof(*state));
state->oob_format = NAND_OOB_NONE;
}
int nand_fileio_start(struct command_context *cmd_ctx,
struct nand_device *nand, const char *filename, int filemode,
struct nand_fileio_state *state)
{
if (state->address % nand->page_size) {
command_print(cmd_ctx, "only page-aligned addresses are supported");
return ERROR_COMMAND_SYNTAX_ERROR;
}
duration_start(&state->bench);
if (NULL != filename) {
int retval = fileio_open(&state->fileio, filename, filemode, FILEIO_BINARY);
if (ERROR_OK != retval) {
const char *msg = (FILEIO_READ == filemode) ? "read" : "write";
command_print(cmd_ctx, "failed to open '%s' for %s access",
filename, msg);
return retval;
}
state->file_opened = true;
}
if (!(state->oob_format & NAND_OOB_ONLY)) {
state->page_size = nand->page_size;
state->page = malloc(nand->page_size);
}
if (state->oob_format & (NAND_OOB_RAW | NAND_OOB_SW_ECC | NAND_OOB_SW_ECC_KW)) {
if (nand->page_size == 512) {
state->oob_size = 16;
state->eccpos = nand_oob_16.eccpos;
} else if (nand->page_size == 2048) {
state->oob_size = 64;
state->eccpos = nand_oob_64.eccpos;
}
state->oob = malloc(state->oob_size);
}
return ERROR_OK;
}
int nand_fileio_cleanup(struct nand_fileio_state *state)
{
if (state->file_opened)
fileio_close(&state->fileio);
if (state->oob) {
free(state->oob);
state->oob = NULL;
}
if (state->page) {
free(state->page);
state->page = NULL;
}
return ERROR_OK;
}
int nand_fileio_finish(struct nand_fileio_state *state)
{
nand_fileio_cleanup(state);
return duration_measure(&state->bench);
}
COMMAND_HELPER(nand_fileio_parse_args, struct nand_fileio_state *state,
struct nand_device **dev, enum fileio_access filemode,
bool need_size, bool sw_ecc)
{
nand_fileio_init(state);
unsigned minargs = need_size ? 4 : 3;
if (CMD_ARGC < minargs)
return ERROR_COMMAND_SYNTAX_ERROR;
struct nand_device *nand;
int retval = CALL_COMMAND_HANDLER(nand_command_get_device, 0, &nand);
if (ERROR_OK != retval)
return retval;
if (NULL == nand->device) {
command_print(CMD_CTX, "#%s: not probed", CMD_ARGV[0]);
return ERROR_OK;
}
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[2], state->address);
if (need_size) {
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[3], state->size);
if (state->size % nand->page_size) {
command_print(CMD_CTX, "only page-aligned sizes are supported");
return ERROR_COMMAND_SYNTAX_ERROR;
}
}
if (CMD_ARGC > minargs) {
for (unsigned i = minargs; i < CMD_ARGC; i++) {
if (!strcmp(CMD_ARGV[i], "oob_raw"))
state->oob_format |= NAND_OOB_RAW;
else if (!strcmp(CMD_ARGV[i], "oob_only"))
state->oob_format |= NAND_OOB_RAW | NAND_OOB_ONLY;
else if (sw_ecc && !strcmp(CMD_ARGV[i], "oob_softecc"))
state->oob_format |= NAND_OOB_SW_ECC;
else if (sw_ecc && !strcmp(CMD_ARGV[i], "oob_softecc_kw"))
state->oob_format |= NAND_OOB_SW_ECC_KW;
else {
command_print(CMD_CTX, "unknown option: %s", CMD_ARGV[i]);
return ERROR_COMMAND_SYNTAX_ERROR;
}
}
}
retval = nand_fileio_start(CMD_CTX, nand, CMD_ARGV[1], filemode, state);
if (ERROR_OK != retval)
return retval;
if (!need_size) {
int filesize;
retval = fileio_size(&state->fileio, &filesize);
if (retval != ERROR_OK)
return retval;
state->size = filesize;
}
*dev = nand;
return ERROR_OK;
}
/**
* @returns If no error occurred, returns number of bytes consumed;
* otherwise, returns a negative error code.)
*/
int nand_fileio_read(struct nand_device *nand, struct nand_fileio_state *s)
{
size_t total_read = 0;
size_t one_read;
if (NULL != s->page) {
fileio_read(&s->fileio, s->page_size, s->page, &one_read);
if (one_read < s->page_size)
memset(s->page + one_read, 0xff, s->page_size - one_read);
total_read += one_read;
}
if (s->oob_format & NAND_OOB_SW_ECC) {
uint8_t ecc[3];
memset(s->oob, 0xff, s->oob_size);
for (uint32_t i = 0, j = 0; i < s->page_size; i += 256) {
nand_calculate_ecc(nand, s->page + i, ecc);
s->oob[s->eccpos[j++]] = ecc[0];
s->oob[s->eccpos[j++]] = ecc[1];
s->oob[s->eccpos[j++]] = ecc[2];
}
} else if (s->oob_format & NAND_OOB_SW_ECC_KW) {
/*
* In this case eccpos is not used as
* the ECC data is always stored contigously
* at the end of the OOB area. It consists
* of 10 bytes per 512-byte data block.
*/
uint8_t *ecc = s->oob + s->oob_size - s->page_size / 512 * 10;
memset(s->oob, 0xff, s->oob_size);
for (uint32_t i = 0; i < s->page_size; i += 512) {
nand_calculate_ecc_kw(nand, s->page + i, ecc);
ecc += 10;
}
} else if (NULL != s->oob) {
fileio_read(&s->fileio, s->oob_size, s->oob, &one_read);
if (one_read < s->oob_size)
memset(s->oob + one_read, 0xff, s->oob_size - one_read);
total_read += one_read;
}
return total_read;
}
|
