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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
*/
#include <common.h>
#include <malloc.h>
#include <errno.h>
#include <div64.h>
#include <dfu.h>
#include <spi.h>
#include <spi_flash.h>
#include <jffs2/load_kernel.h>
#include <linux/mtd/mtd.h>
static int dfu_get_medium_size_sf(struct dfu_entity *dfu, u64 *size)
{
*size = dfu->data.sf.size;
return 0;
}
static int dfu_read_medium_sf(struct dfu_entity *dfu, u64 offset, void *buf,
long *len)
{
return spi_flash_read(dfu->data.sf.dev, dfu->data.sf.start + offset,
*len, buf);
}
static u64 find_sector(struct dfu_entity *dfu, u64 start, u64 offset)
{
return (lldiv((start + offset), dfu->data.sf.dev->sector_size)) *
dfu->data.sf.dev->sector_size;
}
static int dfu_write_medium_sf(struct dfu_entity *dfu,
u64 offset, void *buf, long *len)
{
int ret;
ret = spi_flash_erase(dfu->data.sf.dev,
find_sector(dfu, dfu->data.sf.start, offset),
dfu->data.sf.dev->sector_size);
if (ret)
return ret;
ret = spi_flash_write(dfu->data.sf.dev, dfu->data.sf.start + offset,
*len, buf);
if (ret)
return ret;
return 0;
}
static int dfu_flush_medium_sf(struct dfu_entity *dfu)
{
u64 off, length;
if (!CONFIG_IS_ENABLED(DFU_SF_PART) || !dfu->data.sf.ubi)
return 0;
/* in case of ubi partition, erase rest of the partition */
off = find_sector(dfu, dfu->data.sf.start, dfu->offset);
/* last write ended with unaligned length jump to next */
if (off != dfu->data.sf.start + dfu->offset)
off += dfu->data.sf.dev->sector_size;
length = dfu->data.sf.start + dfu->data.sf.size - off;
if (length)
return spi_flash_erase(dfu->data.sf.dev, off, length);
return 0;
}
static unsigned int dfu_polltimeout_sf(struct dfu_entity *dfu)
{
/*
* Currently, Poll Timeout != 0 is only needed on nand
* ubi partition, as sectors which are not used need
* to be erased
*/
if (CONFIG_IS_ENABLED(DFU_SF_PART) && dfu->data.sf.ubi)
return DFU_MANIFEST_POLL_TIMEOUT;
return DFU_DEFAULT_POLL_TIMEOUT;
}
static void dfu_free_entity_sf(struct dfu_entity *dfu)
{
spi_flash_free(dfu->data.sf.dev);
}
static struct spi_flash *parse_dev(char *devstr)
{
unsigned int bus;
unsigned int cs;
unsigned int speed = CONFIG_SF_DEFAULT_SPEED;
unsigned int mode = CONFIG_SF_DEFAULT_MODE;
char *s, *endp;
struct spi_flash *dev;
s = strsep(&devstr, ":");
if (!s || !*s || (bus = simple_strtoul(s, &endp, 0), *endp)) {
printf("Invalid SPI bus %s\n", s);
return NULL;
}
s = strsep(&devstr, ":");
if (!s || !*s || (cs = simple_strtoul(s, &endp, 0), *endp)) {
printf("Invalid SPI chip-select %s\n", s);
return NULL;
}
s = strsep(&devstr, ":");
if (s && *s) {
speed = simple_strtoul(s, &endp, 0);
if (*endp || !speed) {
printf("Invalid SPI speed %s\n", s);
return NULL;
}
}
s = strsep(&devstr, ":");
if (s && *s) {
mode = simple_strtoul(s, &endp, 0);
if (*endp || mode > 3) {
printf("Invalid SPI mode %s\n", s);
return NULL;
}
}
dev = spi_flash_probe(bus, cs, speed, mode);
if (!dev) {
printf("Failed to create SPI flash at %d:%d:%d:%d\n",
bus, cs, speed, mode);
return NULL;
}
return dev;
}
int dfu_fill_entity_sf(struct dfu_entity *dfu, char *devstr, char *s)
{
char *st;
char *devstr_bkup = strdup(devstr);
dfu->data.sf.dev = parse_dev(devstr_bkup);
free(devstr_bkup);
if (!dfu->data.sf.dev)
return -ENODEV;
dfu->dev_type = DFU_DEV_SF;
dfu->max_buf_size = dfu->data.sf.dev->sector_size;
st = strsep(&s, " ");
if (!strcmp(st, "raw")) {
dfu->layout = DFU_RAW_ADDR;
dfu->data.sf.start = simple_strtoul(s, &s, 16);
s++;
dfu->data.sf.size = simple_strtoul(s, &s, 16);
} else if (CONFIG_IS_ENABLED(DFU_SF_PART) &&
(!strcmp(st, "part") || !strcmp(st, "partubi"))) {
char mtd_id[32];
struct mtd_device *mtd_dev;
u8 part_num;
struct part_info *pi;
int ret, dev, part;
dfu->layout = DFU_RAW_ADDR;
dev = simple_strtoul(s, &s, 10);
s++;
part = simple_strtoul(s, &s, 10);
sprintf(mtd_id, "%s%d,%d", "nor", dev, part - 1);
printf("using id '%s'\n", mtd_id);
mtdparts_init();
ret = find_dev_and_part(mtd_id, &mtd_dev, &part_num, &pi);
if (ret != 0) {
printf("Could not locate '%s'\n", mtd_id);
return -1;
}
dfu->data.sf.start = pi->offset;
dfu->data.sf.size = pi->size;
if (!strcmp(st, "partubi"))
dfu->data.sf.ubi = 1;
} else {
printf("%s: Memory layout (%s) not supported!\n", __func__, st);
spi_flash_free(dfu->data.sf.dev);
return -1;
}
dfu->get_medium_size = dfu_get_medium_size_sf;
dfu->read_medium = dfu_read_medium_sf;
dfu->write_medium = dfu_write_medium_sf;
dfu->flush_medium = dfu_flush_medium_sf;
dfu->poll_timeout = dfu_polltimeout_sf;
dfu->free_entity = dfu_free_entity_sf;
/* initial state */
dfu->inited = 0;
return 0;
}
|
