01698af3 |
1 | /* |
2 | * Tool for Saturn USB DataLink device |
3 | * Copyright (c) 2014 notaz |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining |
6 | * a copy of this software and associated documentation files (the |
7 | * "Software"), to deal in the Software without restriction, including |
8 | * without limitation the rights to use, copy, modify, merge, publish, |
9 | * distribute, sublicense, and/or sell copies of the Software, and to |
10 | * permit persons to whom the Software is furnished to do so, subject to |
11 | * the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be |
14 | * included in all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
17 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
19 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
20 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
21 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
22 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
23 | * SOFTWARE. |
24 | */ |
25 | |
26 | #include <stdio.h> |
27 | #include <string.h> |
28 | #include <stdlib.h> |
29 | #include <string.h> |
30 | #include <stdint.h> |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> |
33 | #include <fcntl.h> |
34 | #include <sys/ioctl.h> |
35 | #include <unistd.h> |
36 | |
37 | // ugh.. avoid conflicting winsize/termio from sys/ioctl.h |
38 | #define winsize winsize_ |
39 | #define termio termio_ |
40 | #include <linux/termios.h> |
41 | |
42 | #define BAUD_RATE 375000 |
43 | #define MAX_DATA_SIZE 191 |
d6a44ec7 |
44 | #define PROGRESS_STEP (4 * 1024) |
01698af3 |
45 | |
46 | static int setup(int fd) |
47 | { |
48 | struct termios2 tty; |
49 | //struct termios tty; |
50 | int ret; |
51 | |
52 | memset(&tty, 0, sizeof(tty)); |
53 | |
54 | //ret = tcgetattr(fd, &tty); |
55 | ret = ioctl(fd, TCGETS2, &tty); |
56 | if (ret != 0) { |
57 | perror("TCGETS2"); |
58 | return ret; |
59 | } |
60 | |
61 | tty.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP |
62 | | INLCR | IGNCR | ICRNL | IXON); |
63 | tty.c_oflag &= ~OPOST; |
64 | tty.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN); |
65 | tty.c_cflag &= ~(CSIZE | PARENB); |
66 | tty.c_cflag |= CS8 | CSTOPB | CREAD; |
67 | tty.c_cflag &= ~CBAUD; |
68 | tty.c_cflag |= BOTHER; |
69 | tty.c_ispeed = |
70 | tty.c_ospeed = BAUD_RATE; |
71 | |
72 | tty.c_cc[VMIN] = 1; |
73 | tty.c_cc[VTIME] = 0; // read timeout deciseconds |
74 | |
75 | //ret = tcsetattr(fd, TCSANOW, &tty); |
76 | ret = ioctl(fd, TCSETS2, &tty); |
77 | if (ret != 0) { |
78 | perror("TCSETS2"); |
79 | return ret; |
80 | } |
81 | |
82 | memset(&tty, 0, sizeof(tty)); |
83 | ret = ioctl(fd, TCGETS2, &tty); |
84 | if (ret != 0) { |
85 | perror("TCGETS2"); |
86 | return ret; |
87 | } |
88 | |
89 | if (tty.c_ispeed != BAUD_RATE || tty.c_ospeed != BAUD_RATE) { |
90 | fprintf(stderr, "warning: could not set %d baud, got:\n", |
91 | BAUD_RATE); |
92 | fprintf(stderr, "c_ispeed: %d\n", tty.c_ispeed); |
93 | fprintf(stderr, "c_ospeed: %d\n", tty.c_ospeed); |
94 | fprintf(stderr, "c_cflag: 0%o\n", tty.c_cflag); |
95 | } |
96 | |
97 | return 0; |
98 | } |
99 | |
d6a44ec7 |
100 | static void print_progress(int done, int total) |
101 | { |
102 | int i, step; |
103 | |
104 | printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"); |
105 | printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b"); /* 20 */ |
106 | printf("\b\b\b\b\b\b"); |
107 | printf("%06x/%06x |", done, total); |
108 | |
109 | step = total / 20; |
110 | for (i = step; i <= total; i += step) |
111 | printf("%c", done >= i ? '=' : '-'); |
112 | printf("| %3d%%", done * 100 / total); |
113 | fflush(stdout); |
114 | |
115 | if (done == total) |
116 | printf("\n"); |
117 | } |
118 | |
01698af3 |
119 | static void dump_pkt(const uint8_t *buf, size_t size, const char *msg) |
120 | { |
121 | size_t i; |
122 | |
123 | printf("%s\n", msg); |
124 | |
125 | for (i = 0; i < size; ) { |
126 | printf("%02zx:", i); |
127 | while (i < size) { |
128 | printf(" %02x", buf[i]); |
129 | i++; |
130 | if ((i & 15) == 0) |
131 | break; |
132 | } |
133 | printf("\n"); |
134 | } |
135 | } |
136 | |
137 | static uint8_t sum(const uint8_t *buf, size_t size) |
138 | { |
139 | uint8_t ret = 0; |
140 | size_t i; |
141 | |
142 | for (i = 0; i < size; i++) |
143 | ret += buf[i]; |
144 | |
145 | return ret; |
146 | } |
147 | |
148 | static int send_pkt(int fd, uint8_t cmd, uint32_t addr, uint8_t len, |
149 | const void *data, size_t data_size) |
150 | { |
151 | uint8_t pkt[200]; |
152 | int ret; |
153 | |
154 | pkt[0] = 0x5a; |
155 | pkt[1] = 9 - 2 + data_size; |
156 | pkt[2] = cmd; |
157 | pkt[3] = addr >> 24; |
158 | pkt[4] = addr >> 16; |
159 | pkt[5] = addr >> 8; |
160 | pkt[6] = addr; |
161 | pkt[7] = len; |
162 | if (data_size > 0) |
163 | memcpy(&pkt[8], data, data_size); |
164 | pkt[8 + data_size] = sum(&pkt[1], 8 + data_size - 1); |
165 | |
166 | // dump_pkt(pkt, 9 + data_size, "send:"); |
167 | |
168 | ret = write(fd, pkt, 9 + data_size); |
169 | if (ret != 9 + data_size) { |
170 | fprintf(stderr, "write: %d/%zd, cmd %02x, addr %08x: ", |
171 | ret, 9 + data_size, cmd, addr); |
172 | perror(""); |
173 | dump_pkt(pkt, 9 + data_size, ""); |
174 | return -1; |
175 | } |
176 | |
177 | return 0; |
178 | } |
179 | |
180 | static int recv_pkt(int fd, uint8_t cmd, uint32_t addr, |
181 | void *data, size_t data_size) |
182 | { |
183 | size_t size = 9 + data_size; |
184 | size_t got; |
185 | uint8_t pkt[200]; |
186 | uint8_t csum; |
187 | int ret; |
188 | |
189 | for (got = 0; got < size; ) { |
190 | ret = read(fd, pkt + got, size); |
191 | if (ret <= 0) { |
192 | fprintf(stderr, "read: %d, %zd/%zd, " |
193 | "cmd %02x, addr %08x: ", |
194 | ret, got, size, cmd, addr); |
195 | perror(""); |
196 | if (got > 0) |
197 | dump_pkt(pkt, got, "received data:"); |
198 | return -1; |
199 | } |
200 | got += ret; |
201 | } |
202 | |
203 | csum = sum(&pkt[1], size - 2); |
204 | if (csum != pkt[size - 1]) { |
205 | fprintf(stderr, "read: %zd, cmd %02x, addr %08x: " |
206 | "checksum incorrect, expected %02x\n", |
207 | got, cmd, addr, csum); |
208 | dump_pkt(pkt, got, ""); |
209 | return -2; |
210 | } |
211 | |
212 | if (pkt[0] != 0xa5 || pkt[1] != size - 2 || pkt[2] != 0xff) { |
213 | fprintf(stderr, "read: %zd, cmd %02x, addr %08x: " |
214 | "unexpected response header\n", |
215 | got, cmd, addr); |
216 | dump_pkt(pkt, got, ""); |
217 | return -2; |
218 | } |
219 | |
220 | if (data_size != 0) |
221 | memcpy(data, &pkt[8], data_size); |
222 | |
223 | // dump_pkt(pkt, got, "recv:"); |
224 | |
225 | return 0; |
226 | } |
227 | |
228 | static int do_rx(int fd, uint32_t addr, void *buf, size_t size) |
229 | { |
d6a44ec7 |
230 | size_t size_total = size; |
231 | int progress_bytes = 0; |
01698af3 |
232 | char *cbuf = buf; |
233 | int ret; |
234 | int len; |
235 | |
236 | /* must use at least 2 packets */ |
237 | if (size <= MAX_DATA_SIZE) |
238 | len = size / 2; |
239 | else |
240 | len = MAX_DATA_SIZE; |
241 | |
242 | ret = send_pkt(fd, 0x01, addr, len, NULL, 0); |
243 | if (ret != 0) |
244 | return ret; |
245 | |
246 | ret = recv_pkt(fd, 0x01, addr, cbuf, len); |
247 | if (ret != 0) |
248 | return ret; |
249 | |
250 | addr += len; |
251 | cbuf += len; |
252 | size -= len; |
253 | |
254 | while (size > 0) { |
255 | uint8_t cmd = size > MAX_DATA_SIZE ? 0x11 : 0x21; |
256 | |
257 | len = size; |
258 | if (len > MAX_DATA_SIZE) |
259 | len = MAX_DATA_SIZE; |
260 | |
261 | ret = send_pkt(fd, cmd, addr, len, NULL, 0); |
262 | if (ret != 0) |
263 | return ret; |
264 | |
265 | ret = recv_pkt(fd, 0x01, addr, cbuf, len); |
266 | if (ret != 0) |
267 | return ret; |
268 | |
269 | addr += len; |
270 | cbuf += len; |
271 | size -= len; |
d6a44ec7 |
272 | |
273 | progress_bytes -= len; |
274 | if (progress_bytes <= 0 || size == 0) { |
275 | print_progress(size_total - size, size_total); |
276 | progress_bytes = PROGRESS_STEP; |
277 | } |
01698af3 |
278 | } |
279 | |
280 | return 0; |
281 | } |
282 | |
283 | static int do_tx(int fd, uint32_t addr, void *buf, size_t size, int exe) |
284 | { |
d6a44ec7 |
285 | int progress_bytes = 0; |
286 | size_t size_total = size; |
01698af3 |
287 | size_t size_last = size; |
288 | uint32_t addr_last = addr; |
289 | char *cbuf = buf; |
290 | uint8_t cmd = 0x09; |
291 | int ret; |
292 | int len; |
293 | |
294 | if (size > MAX_DATA_SIZE) { |
295 | /* skip first packet, we'll send it last */ |
296 | size_last = MAX_DATA_SIZE; |
297 | addr += size_last; |
298 | cbuf += size_last; |
299 | size -= size_last; |
300 | |
301 | while (size > 0) { |
302 | len = size; |
303 | if (len > MAX_DATA_SIZE) |
304 | len = MAX_DATA_SIZE; |
305 | |
306 | ret = send_pkt(fd, cmd, addr, len, cbuf, len); |
307 | if (ret != 0) |
308 | return ret; |
309 | |
310 | ret = recv_pkt(fd, cmd, addr, NULL, 0); |
311 | if (ret != 0) |
312 | return ret; |
313 | |
314 | addr += len; |
315 | cbuf += len; |
316 | size -= len; |
d6a44ec7 |
317 | |
318 | progress_bytes -= len; |
319 | if (progress_bytes <= 0) { |
320 | print_progress(size_total - size - size_last, |
321 | size_total); |
322 | progress_bytes = PROGRESS_STEP; |
323 | } |
01698af3 |
324 | } |
325 | } |
326 | |
327 | if (exe) |
328 | cmd = 0x19; |
329 | |
330 | ret = send_pkt(fd, cmd, addr_last, size_last, buf, size_last); |
331 | if (ret != 0) |
332 | return ret; |
333 | |
334 | ret = recv_pkt(fd, cmd, addr_last, NULL, 0); |
335 | if (ret != 0) |
336 | return ret; |
337 | |
d6a44ec7 |
338 | print_progress(size_total, size_total); |
339 | |
01698af3 |
340 | return 0; |
341 | } |
342 | |
343 | static void usage(const char *argv0) |
344 | { |
345 | printf("usage:\n" |
346 | "%s [dev <device>] command(s)\n" |
347 | "commands:\n" |
348 | " rx <addr> <size> <outfile>\n" |
349 | " tx <addr> <size> <infile> [x]\n" |
350 | " <outfile> can be \"/hd/\" for a hexdump\n" |
351 | " x instructs to execute uploaded data\n" |
d6a44ec7 |
352 | " for tx, size 0 asks to use filesize\n\n" |
353 | "useful regions (addr size):\n" |
354 | " 0x00000000 0x080000 - BIOS\n" |
355 | " 0x00180000 0x010000 - Backup-RAM\n" |
356 | " 0x00200000 0x100000 - Work-RAM-L\n" |
357 | " 0x05a00000 0x080000 - 68000-RAM\n" |
358 | " 0x05c00000 0x080000 - VDP1-VRAM\n" |
359 | " 0x05c80000 0x040000 - VDP1-FB\n" |
360 | " 0x05e00000 0x080000 - VDP2-VRAM\n" |
361 | " 0x05f00000 0x001000 - VDP2-CRAM\n" |
362 | " 0x06000000 0x100000 - Work-RAM-H\n" |
363 | , argv0); |
01698af3 |
364 | exit(1); |
365 | } |
366 | |
367 | static void invarg(int argc, char *argv[], int arg) |
368 | { |
369 | if (arg < argc) |
370 | fprintf(stderr, "invalid arg %d: \"%s\"\n", arg, argv[arg]); |
371 | else |
372 | fprintf(stderr, "missing required argument %d\n", arg); |
373 | exit(1); |
374 | } |
375 | |
376 | int main(int argc, char *argv[]) |
377 | { |
378 | const char *portname = "/dev/ttyUSB0"; |
379 | const char *fname; |
380 | struct stat st; |
381 | void *buf = NULL; |
382 | FILE *f = NULL; |
383 | uint32_t addr; |
384 | size_t size; |
385 | char *endp; |
386 | int arg = 1; |
387 | int ret; |
388 | int fd; |
389 | |
390 | if (argc < 2 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) |
391 | usage(argv[0]); |
392 | |
393 | if (!strcmp(argv[arg], "dev")) { |
394 | arg++; |
395 | if (argv[arg] != NULL) |
396 | portname = argv[arg]; |
397 | else |
398 | invarg(argc, argv, arg); |
399 | arg++; |
400 | } |
401 | |
402 | fd = open(portname, O_RDWR | O_NOCTTY | O_SYNC); |
403 | if (fd < 0) { |
404 | fprintf(stderr, "open %s: ", portname); |
405 | perror(""); |
406 | return 1; |
407 | } |
408 | |
409 | ret = setup(fd); |
410 | if (ret) |
411 | return ret; |
412 | |
413 | while (arg < argc) |
414 | { |
415 | if (!strcmp(argv[arg], "rx") || |
416 | !strcmp(argv[arg], "tx")) |
417 | { |
418 | int tx = !strcmp(argv[arg], "tx"); |
419 | int exe = 0; |
420 | |
421 | if (argc - arg < 4) |
422 | invarg(argc, argv, argc); |
423 | |
424 | endp = NULL; |
425 | addr = strtoul(argv[++arg], &endp, 0); |
426 | if (endp == NULL || *endp != 0) |
427 | invarg(argc, argv, arg); |
428 | |
429 | endp = NULL; |
430 | size = strtoul(argv[++arg], &endp, 0); |
431 | if (endp == NULL || *endp != 0) |
432 | invarg(argc, argv, arg); |
433 | |
434 | fname = argv[++arg]; |
435 | if (tx || strcmp(fname, "/hd/") != 0) { |
436 | f = fopen(fname, tx ? "rb" : "wb"); |
437 | if (f == NULL) { |
438 | fprintf(stderr, "open %s: \n", |
439 | fname); |
440 | perror(""); |
441 | return 1; |
442 | } |
443 | } |
444 | |
445 | if (tx && size == 0) { |
446 | ret = fstat(fileno(f), &st); |
447 | if (ret != 0) { |
448 | fprintf(stderr, "fstat %s: \n", |
449 | fname); |
450 | perror("stat"); |
451 | return 1; |
452 | } |
453 | size = st.st_size; |
454 | } |
455 | |
456 | if (size == 0) { |
457 | fprintf(stderr, "size is 0\n"); |
458 | return 1; |
459 | } |
460 | |
461 | buf = realloc(buf, size); |
462 | if (buf == NULL) { |
463 | fprintf(stderr, "OOM\n"); |
464 | return 1; |
465 | } |
466 | |
467 | if (tx) { |
468 | ret = fread(buf, 1, size, f); |
469 | if (ret != size) { |
470 | fprintf(stderr, "read %s: \n", |
471 | fname); |
472 | perror(""); |
473 | return 1; |
474 | } |
475 | |
476 | if (arg + 1 < argc |
477 | && !strcmp(argv[arg + 1], "x")) |
478 | { |
479 | exe = 1; |
480 | arg++; |
481 | } |
482 | |
483 | ret = do_tx(fd, addr, buf, size, exe); |
484 | if (ret != 0) |
485 | return ret; |
486 | } |
487 | else { |
488 | ret = do_rx(fd, addr, buf, size); |
489 | if (ret != 0) |
490 | return ret; |
491 | |
492 | if (f != NULL) { |
493 | ret = fwrite(buf, 1, size, f); |
494 | if (ret != size) { |
495 | fprintf(stderr, |
496 | "write %s: \n", |
497 | fname); |
498 | perror(""); |
499 | return 1; |
500 | } |
501 | } |
502 | else { |
503 | dump_pkt(buf, size, ""); |
504 | } |
505 | } |
506 | |
507 | if (f != NULL) { |
508 | fclose(f); |
509 | f = NULL; |
510 | } |
511 | arg++; |
512 | } |
513 | else { |
514 | invarg(argc, argv, arg); |
515 | } |
516 | } |
517 | |
518 | return 0; |
519 | } |