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11#include <common.h>
12#include <gzip.h>
13#include <image.h>
14#include <log.h>
15#include <spl.h>
16#include <xyzModem.h>
17#include <asm/u-boot.h>
18#include <linux/libfdt.h>
19
20#define BUF_SIZE 1024
21
22
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26
27
28struct ymodem_fit_info {
29 int image_read;
30 char *buf;
31};
32
33static int getcymodem(void) {
34 if (tstc())
35 return (getchar());
36 return -1;
37}
38
39static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
40 ulong size, void *addr)
41{
42 int res, err, buf_offset;
43 struct ymodem_fit_info *info = load->priv;
44 char *buf = info->buf;
45 ulong copy_size = size;
46
47 while (info->image_read < offset) {
48 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
49 if (res <= 0)
50 break;
51
52 info->image_read += res;
53 }
54
55 if (info->image_read > offset) {
56 res = info->image_read - offset;
57 if (info->image_read % BUF_SIZE)
58 buf_offset = (info->image_read % BUF_SIZE);
59 else
60 buf_offset = BUF_SIZE;
61
62 if (res > copy_size) {
63 memcpy(addr, &buf[buf_offset - res], copy_size);
64 goto done;
65 }
66 memcpy(addr, &buf[buf_offset - res], res);
67 addr = addr + res;
68 copy_size -= res;
69 }
70
71 while (info->image_read < offset + size) {
72 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
73 if (res <= 0)
74 break;
75
76 info->image_read += res;
77 if (res > copy_size) {
78 memcpy(addr, buf, copy_size);
79 goto done;
80 }
81 memcpy(addr, buf, res);
82 addr += res;
83 copy_size -= res;
84 }
85
86done:
87 return size;
88}
89
90int spl_ymodem_load_image(struct spl_image_info *spl_image,
91 struct spl_boot_device *bootdev)
92{
93 ulong size = 0;
94 int err;
95 int res;
96 int ret;
97 connection_info_t info;
98 char buf[BUF_SIZE];
99 struct image_header *ih = NULL;
100 ulong addr = 0;
101
102 info.mode = xyzModem_ymodem;
103 ret = xyzModem_stream_open(&info, &err);
104 if (ret) {
105 printf("spl: ymodem err - %s\n", xyzModem_error(err));
106 return ret;
107 }
108
109 res = xyzModem_stream_read(buf, BUF_SIZE, &err);
110 if (res <= 0)
111 goto end_stream;
112
113 if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
114 image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
115 addr = CONFIG_SYS_LOAD_ADDR;
116 ih = (struct image_header *)addr;
117
118 memcpy((void *)addr, buf, res);
119 size += res;
120 addr += res;
121
122 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
123 memcpy((void *)addr, buf, res);
124 size += res;
125 addr += res;
126 }
127
128 ret = spl_parse_image_header(spl_image, bootdev, ih);
129 if (ret)
130 return ret;
131 } else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
132 image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
133 struct spl_load_info load;
134 struct ymodem_fit_info info;
135
136 debug("Found FIT\n");
137 load.dev = NULL;
138 load.priv = (void *)&info;
139 load.filename = NULL;
140 load.bl_len = 1;
141 info.buf = buf;
142 info.image_read = BUF_SIZE;
143 load.read = ymodem_read_fit;
144 ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
145 size = info.image_read;
146
147 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
148 size += res;
149 } else {
150 ih = (struct image_header *)buf;
151 ret = spl_parse_image_header(spl_image, bootdev, ih);
152 if (ret)
153 goto end_stream;
154#ifdef CONFIG_SPL_GZIP
155 if (ih->ih_comp == IH_COMP_GZIP)
156 addr = CONFIG_SYS_LOAD_ADDR;
157 else
158#endif
159 addr = spl_image->load_addr;
160 memcpy((void *)addr, buf, res);
161 ih = (struct image_header *)addr;
162 size += res;
163 addr += res;
164
165 while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
166 memcpy((void *)addr, buf, res);
167 size += res;
168 addr += res;
169 }
170 }
171
172end_stream:
173 xyzModem_stream_close(&err);
174 xyzModem_stream_terminate(false, &getcymodem);
175
176 printf("Loaded %lu bytes\n", size);
177
178#ifdef CONFIG_SPL_GZIP
179 if (!(IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
180 image_get_magic((struct image_header *)buf) == FDT_MAGIC) &&
181 (ih->ih_comp == IH_COMP_GZIP)) {
182 if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)),
183 CONFIG_SYS_BOOTM_LEN,
184 (void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)),
185 &size)) {
186 puts("Uncompressing error\n");
187 return -EIO;
188 }
189 }
190#endif
191
192 return ret;
193}
194SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);
195
