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
|
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2011
* Texas Instruments, <www.ti.com>
*
* Matt Porter <mporter@ti.com>
*/
#include <common.h>
#include <spl.h>
#include <xyzModem.h>
#include <asm/u-boot.h>
#include <linux/libfdt.h>
#define BUF_SIZE 1024
/*
* Information required to load image using ymodem.
*
* @image_read: Now of bytes read from the image.
* @buf: pointer to the previous read block.
*/
struct ymodem_fit_info {
int image_read;
char *buf;
};
static int getcymodem(void) {
if (tstc())
return (getc());
return -1;
}
static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
ulong size, void *addr)
{
int res, err;
struct ymodem_fit_info *info = load->priv;
char *buf = info->buf;
while (info->image_read < offset) {
res = xyzModem_stream_read(buf, BUF_SIZE, &err);
if (res <= 0)
return res;
info->image_read += res;
}
if (info->image_read > offset) {
res = info->image_read - offset;
memcpy(addr, &buf[BUF_SIZE - res], res);
addr = addr + res;
}
while (info->image_read < offset + size) {
res = xyzModem_stream_read(buf, BUF_SIZE, &err);
if (res <= 0)
return res;
memcpy(addr, buf, res);
info->image_read += res;
addr += res;
}
return size;
}
static int spl_ymodem_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
ulong size = 0;
int err;
int res;
int ret;
connection_info_t info;
char buf[BUF_SIZE];
struct image_header *ih = NULL;
ulong addr = 0;
info.mode = xyzModem_ymodem;
ret = xyzModem_stream_open(&info, &err);
if (ret) {
printf("spl: ymodem err - %s\n", xyzModem_error(err));
return ret;
}
res = xyzModem_stream_read(buf, BUF_SIZE, &err);
if (res <= 0)
goto end_stream;
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
addr = CONFIG_SYS_LOAD_ADDR;
ih = (struct image_header *)addr;
memcpy((void *)addr, buf, res);
size += res;
addr += res;
while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
memcpy((void *)addr, buf, res);
size += res;
addr += res;
}
ret = spl_parse_image_header(spl_image, ih);
if (ret)
return ret;
} else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
struct spl_load_info load;
struct ymodem_fit_info info;
debug("Found FIT\n");
load.dev = NULL;
load.priv = (void *)&info;
load.filename = NULL;
load.bl_len = 1;
info.buf = buf;
info.image_read = BUF_SIZE;
load.read = ymodem_read_fit;
ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
size = info.image_read;
while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
size += res;
} else {
ih = (struct image_header *)buf;
ret = spl_parse_image_header(spl_image, ih);
if (ret)
goto end_stream;
#ifdef CONFIG_SPL_GZIP
if (ih->ih_comp == IH_COMP_GZIP)
addr = CONFIG_SYS_LOAD_ADDR;
else
#endif
addr = spl_image->load_addr;
memcpy((void *)addr, buf, res);
ih = (struct image_header *)addr;
size += res;
addr += res;
while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
memcpy((void *)addr, buf, res);
size += res;
addr += res;
}
}
end_stream:
xyzModem_stream_close(&err);
xyzModem_stream_terminate(false, &getcymodem);
printf("Loaded %lu bytes\n", size);
#ifdef CONFIG_SPL_GZIP
if (!(IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic((struct image_header *)buf) == FDT_MAGIC) &&
(ih->ih_comp == IH_COMP_GZIP)) {
if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)),
CONFIG_SYS_BOOTM_LEN,
(void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)),
&size)) {
puts("Uncompressing error\n");
return -EIO;
}
}
#endif
return ret;
}
SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);
|
