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
|
/*
* Copyright 2014 Broadcom Corporation.
* Copyright 2015 Free Electrons.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <common.h>
#include <fastboot.h>
#include <image-sparse.h>
#include <linux/mtd/mtd.h>
#include <jffs2/jffs2.h>
#include <nand.h>
static char *response_str;
struct fb_nand_sparse {
struct mtd_info *mtd;
struct part_info *part;
};
__weak int board_fastboot_erase_partition_setup(char *name)
{
return 0;
}
__weak int board_fastboot_write_partition_setup(char *name)
{
return 0;
}
static int fb_nand_lookup(const char *partname, char *response,
struct mtd_info **mtd,
struct part_info **part)
{
struct mtd_device *dev;
int ret;
u8 pnum;
ret = mtdparts_init();
if (ret) {
error("Cannot initialize MTD partitions\n");
fastboot_fail(response_str, "cannot init mtdparts");
return ret;
}
ret = find_dev_and_part(partname, &dev, &pnum, part);
if (ret) {
error("cannot find partition: '%s'", partname);
fastboot_fail(response_str, "cannot find partition");
return ret;
}
if (dev->id->type != MTD_DEV_TYPE_NAND) {
error("partition '%s' is not stored on a NAND device",
partname);
fastboot_fail(response_str, "not a NAND device");
return -EINVAL;
}
*mtd = nand_info[dev->id->num];
return 0;
}
static int _fb_nand_erase(struct mtd_info *mtd, struct part_info *part)
{
nand_erase_options_t opts;
int ret;
memset(&opts, 0, sizeof(opts));
opts.offset = part->offset;
opts.length = part->size;
opts.quiet = 1;
printf("Erasing blocks 0x%llx to 0x%llx\n",
part->offset, part->offset + part->size);
ret = nand_erase_opts(mtd, &opts);
if (ret)
return ret;
printf("........ erased 0x%llx bytes from '%s'\n",
part->size, part->name);
return 0;
}
static int _fb_nand_write(struct mtd_info *mtd, struct part_info *part,
void *buffer, unsigned int offset,
unsigned int length, size_t *written)
{
int flags = WITH_WR_VERIFY;
#ifdef CONFIG_FASTBOOT_FLASH_NAND_TRIMFFS
flags |= WITH_DROP_FFS;
#endif
return nand_write_skip_bad(mtd, offset, &length, written,
part->size - (offset - part->offset),
buffer, flags);
}
static lbaint_t fb_nand_sparse_write(struct sparse_storage *info,
lbaint_t blk, lbaint_t blkcnt, const void *buffer)
{
struct fb_nand_sparse *sparse = info->priv;
size_t written;
int ret;
ret = _fb_nand_write(sparse->mtd, sparse->part, (void *)buffer,
blk * info->blksz,
blkcnt * info->blksz, &written);
if (ret < 0) {
printf("Failed to write sparse chunk\n");
return ret;
}
/* TODO - verify that the value "written" includes the "bad-blocks" ... */
/*
* the return value must be 'blkcnt' ("good-blocks") plus the
* number of "bad-blocks" encountered within this space...
*/
return written / info->blksz;
}
void fb_nand_flash_write(const char *cmd, void *download_buffer,
unsigned int download_bytes, char *response)
{
struct part_info *part;
struct mtd_info *mtd = NULL;
int ret;
/* initialize the response buffer */
response_str = response;
ret = fb_nand_lookup(cmd, response, &mtd, &part);
if (ret) {
error("invalid NAND device");
fastboot_fail(response_str, "invalid NAND device");
return;
}
ret = board_fastboot_write_partition_setup(part->name);
if (ret)
return;
if (is_sparse_image(download_buffer)) {
struct fb_nand_sparse sparse_priv;
struct sparse_storage sparse;
sparse_priv.mtd = mtd;
sparse_priv.part = part;
sparse.blksz = mtd->writesize;
sparse.start = part->offset / sparse.blksz;
sparse.size = part->size / sparse.blksz;
sparse.write = fb_nand_sparse_write;
printf("Flashing sparse image at offset " LBAFU "\n",
sparse.start);
sparse.priv = &sparse_priv;
write_sparse_image(&sparse, cmd, download_buffer,
download_bytes, response_str);
} else {
printf("Flashing raw image at offset 0x%llx\n",
part->offset);
ret = _fb_nand_write(mtd, part, download_buffer, part->offset,
download_bytes, NULL);
printf("........ wrote %u bytes to '%s'\n",
download_bytes, part->name);
}
if (ret) {
fastboot_fail(response_str, "error writing the image");
return;
}
fastboot_okay(response_str, "");
}
void fb_nand_erase(const char *cmd, char *response)
{
struct part_info *part;
struct mtd_info *mtd = NULL;
int ret;
/* initialize the response buffer */
response_str = response;
ret = fb_nand_lookup(cmd, response, &mtd, &part);
if (ret) {
error("invalid NAND device");
fastboot_fail(response_str, "invalid NAND device");
return;
}
ret = board_fastboot_erase_partition_setup(part->name);
if (ret)
return;
ret = _fb_nand_erase(mtd, part);
if (ret) {
error("failed erasing from device %s", mtd->name);
fastboot_fail(response_str, "failed erasing from device");
return;
}
fastboot_okay(response_str, "");
}
|
