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8bde7f77 WD |
1 | /* |
2 | * (C) Copyright 2000-2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Serial up- and download support | |
26 | */ | |
27 | #include <common.h> | |
28 | #include <command.h> | |
8bde7f77 WD |
29 | #include <s_record.h> |
30 | #include <net.h> | |
31 | #include <syscall.h> | |
32 | ||
33 | ||
34 | #if (CONFIG_COMMANDS & CFG_CMD_LOADS) | |
35 | static ulong load_serial (ulong offset); | |
36 | static int read_record (char *buf, ulong len); | |
37 | # if (CONFIG_COMMANDS & CFG_CMD_SAVES) | |
38 | static int save_serial (ulong offset, ulong size); | |
39 | static int write_record (char *buf); | |
40 | # endif /* CFG_CMD_SAVES */ | |
41 | ||
42 | static int do_echo = 1; | |
43 | #endif /* CFG_CMD_LOADS */ | |
44 | ||
45 | /* -------------------------------------------------------------------- */ | |
46 | ||
47 | #if (CONFIG_COMMANDS & CFG_CMD_LOADS) | |
48 | int do_load_serial (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
49 | { | |
50 | ulong offset = 0; | |
51 | ulong addr; | |
52 | int i; | |
53 | char *env_echo; | |
54 | int rcode = 0; | |
55 | #ifdef CFG_LOADS_BAUD_CHANGE | |
56 | DECLARE_GLOBAL_DATA_PTR; | |
57 | int load_baudrate, current_baudrate; | |
58 | ||
59 | load_baudrate = current_baudrate = gd->baudrate; | |
60 | #endif | |
61 | ||
62 | if (((env_echo = getenv("loads_echo")) != NULL) && (*env_echo == '1')) { | |
63 | do_echo = 1; | |
64 | } else { | |
65 | do_echo = 0; | |
66 | } | |
67 | ||
68 | #ifdef CFG_LOADS_BAUD_CHANGE | |
69 | if (argc >= 2) { | |
70 | offset = simple_strtoul(argv[1], NULL, 16); | |
71 | } | |
72 | if (argc == 3) { | |
73 | load_baudrate = (int)simple_strtoul(argv[2], NULL, 10); | |
74 | ||
75 | /* default to current baudrate */ | |
76 | if (load_baudrate == 0) | |
77 | load_baudrate = current_baudrate; | |
78 | } | |
79 | if (load_baudrate != current_baudrate) { | |
80 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
81 | load_baudrate); | |
82 | udelay(50000); | |
83 | gd->baudrate = load_baudrate; | |
84 | serial_setbrg (); | |
85 | udelay(50000); | |
86 | for (;;) { | |
87 | if (getc() == '\r') | |
88 | break; | |
89 | } | |
90 | } | |
91 | #else /* ! CFG_LOADS_BAUD_CHANGE */ | |
92 | if (argc == 2) { | |
93 | offset = simple_strtoul(argv[1], NULL, 16); | |
94 | } | |
95 | #endif /* CFG_LOADS_BAUD_CHANGE */ | |
96 | ||
97 | printf ("## Ready for S-Record download ...\n"); | |
98 | ||
99 | addr = load_serial (offset); | |
100 | ||
101 | /* | |
102 | * Gather any trailing characters (for instance, the ^D which | |
103 | * is sent by 'cu' after sending a file), and give the | |
104 | * box some time (100 * 1 ms) | |
105 | */ | |
106 | for (i=0; i<100; ++i) { | |
107 | if (serial_tstc()) { | |
108 | (void) serial_getc(); | |
109 | } | |
110 | udelay(1000); | |
111 | } | |
112 | ||
113 | if (addr == ~0) { | |
114 | printf ("## S-Record download aborted\n"); | |
115 | rcode = 1; | |
116 | } else { | |
117 | printf ("## Start Addr = 0x%08lX\n", addr); | |
118 | load_addr = addr; | |
119 | } | |
120 | ||
121 | #ifdef CFG_LOADS_BAUD_CHANGE | |
122 | if (load_baudrate != current_baudrate) { | |
123 | printf ("## Switch baudrate to %d bps and press ESC ...\n", | |
124 | current_baudrate); | |
125 | udelay (50000); | |
126 | gd->baudrate = current_baudrate; | |
127 | serial_setbrg (); | |
128 | udelay (50000); | |
129 | for (;;) { | |
130 | if (getc() == 0x1B) /* ESC */ | |
131 | break; | |
132 | } | |
133 | } | |
134 | #endif | |
135 | return rcode; | |
136 | } | |
137 | ||
138 | static ulong | |
139 | load_serial (ulong offset) | |
140 | { | |
141 | char record[SREC_MAXRECLEN + 1]; /* buffer for one S-Record */ | |
142 | char binbuf[SREC_MAXBINLEN]; /* buffer for binary data */ | |
143 | int binlen; /* no. of data bytes in S-Rec. */ | |
144 | int type; /* return code for record type */ | |
145 | ulong addr; /* load address from S-Record */ | |
146 | ulong size; /* number of bytes transferred */ | |
147 | char buf[32]; | |
148 | ulong store_addr; | |
149 | ulong start_addr = ~0; | |
150 | ulong end_addr = 0; | |
151 | int line_count = 0; | |
152 | ||
153 | while (read_record(record, SREC_MAXRECLEN + 1) >= 0) { | |
154 | type = srec_decode (record, &binlen, &addr, binbuf); | |
155 | ||
156 | if (type < 0) { | |
157 | return (~0); /* Invalid S-Record */ | |
158 | } | |
159 | ||
160 | switch (type) { | |
161 | case SREC_DATA2: | |
162 | case SREC_DATA3: | |
163 | case SREC_DATA4: | |
164 | store_addr = addr + offset; | |
165 | #ifndef CFG_NO_FLASH | |
166 | if (addr2info(store_addr)) { | |
167 | int rc; | |
168 | ||
169 | rc = flash_write((uchar *)binbuf,store_addr,binlen); | |
170 | if (rc != 0) { | |
171 | flash_perror (rc); | |
172 | return (~0); | |
173 | } | |
174 | } else | |
175 | #endif | |
176 | { | |
177 | memcpy ((char *)(store_addr), binbuf, binlen); | |
178 | } | |
179 | if ((store_addr) < start_addr) | |
180 | start_addr = store_addr; | |
181 | if ((store_addr + binlen - 1) > end_addr) | |
182 | end_addr = store_addr + binlen - 1; | |
183 | break; | |
184 | case SREC_END2: | |
185 | case SREC_END3: | |
186 | case SREC_END4: | |
187 | udelay (10000); | |
188 | size = end_addr - start_addr + 1; | |
189 | printf ("\n" | |
190 | "## First Load Addr = 0x%08lX\n" | |
191 | "## Last Load Addr = 0x%08lX\n" | |
192 | "## Total Size = 0x%08lX = %ld Bytes\n", | |
193 | start_addr, end_addr, size, size | |
194 | ); | |
195 | flush_cache (addr, size); | |
196 | sprintf(buf, "%lX", size); | |
197 | setenv("filesize", buf); | |
198 | return (addr); | |
199 | case SREC_START: | |
200 | break; | |
201 | default: | |
202 | break; | |
203 | } | |
204 | if (!do_echo) { /* print a '.' every 100 lines */ | |
205 | if ((++line_count % 100) == 0) | |
206 | putc ('.'); | |
207 | } | |
208 | } | |
209 | ||
210 | return (~0); /* Download aborted */ | |
211 | } | |
212 | ||
213 | static int | |
214 | read_record (char *buf, ulong len) | |
215 | { | |
216 | char *p; | |
217 | char c; | |
218 | ||
219 | --len; /* always leave room for terminating '\0' byte */ | |
220 | ||
221 | for (p=buf; p < buf+len; ++p) { | |
222 | c = serial_getc(); /* read character */ | |
223 | if (do_echo) | |
224 | serial_putc (c); /* ... and echo it */ | |
225 | ||
226 | switch (c) { | |
227 | case '\r': | |
228 | case '\n': | |
229 | *p = '\0'; | |
230 | return (p - buf); | |
231 | case '\0': | |
232 | case 0x03: /* ^C - Control C */ | |
233 | return (-1); | |
234 | default: | |
235 | *p = c; | |
236 | } | |
237 | ||
238 | /* Check for the console hangup (if any different from serial) */ | |
239 | #ifdef CONFIG_PPC /* we don't have syscall_tbl anywhere else */ | |
240 | if (syscall_tbl[SYSCALL_GETC] != serial_getc) { | |
241 | if (ctrlc()) { | |
242 | return (-1); | |
243 | } | |
244 | } | |
245 | #endif | |
246 | } | |
247 | ||
248 | /* line too long - truncate */ | |
249 | *p = '\0'; | |
250 | return (p - buf); | |
251 | } | |
252 | ||
253 | #if (CONFIG_COMMANDS & CFG_CMD_SAVES) | |
254 | ||
255 | int do_save_serial (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
256 | { | |
257 | ulong offset = 0; | |
258 | ulong size = 0; | |
259 | #ifdef CFG_LOADS_BAUD_CHANGE | |
260 | DECLARE_GLOBAL_DATA_PTR; | |
261 | int save_baudrate, current_baudrate; | |
262 | ||
263 | save_baudrate = current_baudrate = gd->baudrate; | |
264 | #endif | |
265 | ||
266 | if (argc >= 2) { | |
267 | offset = simple_strtoul(argv[1], NULL, 16); | |
268 | } | |
269 | #ifdef CFG_LOADS_BAUD_CHANGE | |
270 | if (argc >= 3) { | |
271 | size = simple_strtoul(argv[2], NULL, 16); | |
272 | } | |
273 | if (argc == 4) { | |
274 | save_baudrate = (int)simple_strtoul(argv[3], NULL, 10); | |
275 | ||
276 | /* default to current baudrate */ | |
277 | if (save_baudrate == 0) | |
278 | save_baudrate = current_baudrate; | |
279 | } | |
280 | if (save_baudrate != current_baudrate) { | |
281 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
282 | save_baudrate); | |
283 | udelay(50000); | |
284 | gd->baudrate = save_baudrate; | |
285 | serial_setbrg (); | |
286 | udelay(50000); | |
287 | for (;;) { | |
288 | if (getc() == '\r') | |
289 | break; | |
290 | } | |
291 | } | |
292 | #else /* ! CFG_LOADS_BAUD_CHANGE */ | |
293 | if (argc == 3) { | |
294 | size = simple_strtoul(argv[2], NULL, 16); | |
295 | } | |
296 | #endif /* CFG_LOADS_BAUD_CHANGE */ | |
297 | ||
298 | printf ("## Ready for S-Record upload, press ENTER to proceed ...\n"); | |
299 | for (;;) { | |
300 | if (getc() == '\r') | |
301 | break; | |
302 | } | |
303 | if(save_serial (offset, size)) { | |
304 | printf ("## S-Record upload aborted\n"); | |
305 | } else { | |
306 | printf ("## S-Record upload complete\n"); | |
307 | } | |
308 | #ifdef CFG_LOADS_BAUD_CHANGE | |
309 | if (save_baudrate != current_baudrate) { | |
310 | printf ("## Switch baudrate to %d bps and press ESC ...\n", | |
311 | (int)current_baudrate); | |
312 | udelay (50000); | |
313 | gd->baudrate = current_baudrate; | |
314 | serial_setbrg (); | |
315 | udelay (50000); | |
316 | for (;;) { | |
317 | if (getc() == 0x1B) /* ESC */ | |
318 | break; | |
319 | } | |
320 | } | |
321 | #endif | |
322 | return 0; | |
323 | } | |
324 | ||
325 | #define SREC3_START "S0030000FC\n" | |
326 | #define SREC3_FORMAT "S3%02X%08lX%s%02X\n" | |
327 | #define SREC3_END "S70500000000FA\n" | |
328 | #define SREC_BYTES_PER_RECORD 16 | |
329 | ||
330 | static int save_serial (ulong address, ulong count) | |
331 | { | |
332 | int i, c, reclen, checksum, length; | |
333 | char *hex = "0123456789ABCDEF"; | |
334 | char record[2*SREC_BYTES_PER_RECORD+16]; /* buffer for one S-Record */ | |
335 | char data[2*SREC_BYTES_PER_RECORD+1]; /* buffer for hex data */ | |
336 | ||
337 | reclen = 0; | |
338 | checksum = 0; | |
339 | ||
340 | if(write_record(SREC3_START)) /* write the header */ | |
341 | return (-1); | |
342 | do { | |
343 | if(count) { /* collect hex data in the buffer */ | |
344 | c = *(volatile uchar*)(address + reclen); /* get one byte */ | |
345 | checksum += c; /* accumulate checksum */ | |
346 | data[2*reclen] = hex[(c>>4)&0x0f]; | |
347 | data[2*reclen+1] = hex[c & 0x0f]; | |
348 | data[2*reclen+2] = '\0'; | |
349 | ++reclen; | |
350 | --count; | |
351 | } | |
352 | if(reclen == SREC_BYTES_PER_RECORD || count == 0) { | |
353 | /* enough data collected for one record: dump it */ | |
354 | if(reclen) { /* build & write a data record: */ | |
355 | /* address + data + checksum */ | |
356 | length = 4 + reclen + 1; | |
357 | ||
358 | /* accumulate length bytes into checksum */ | |
359 | for(i = 0; i < 2; i++) | |
360 | checksum += (length >> (8*i)) & 0xff; | |
361 | ||
362 | /* accumulate address bytes into checksum: */ | |
363 | for(i = 0; i < 4; i++) | |
364 | checksum += (address >> (8*i)) & 0xff; | |
365 | ||
366 | /* make proper checksum byte: */ | |
367 | checksum = ~checksum & 0xff; | |
368 | ||
369 | /* output one record: */ | |
370 | sprintf(record, SREC3_FORMAT, length, address, data, checksum); | |
371 | if(write_record(record)) | |
372 | return (-1); | |
373 | } | |
374 | address += reclen; /* increment address */ | |
375 | checksum = 0; | |
376 | reclen = 0; | |
377 | } | |
378 | } | |
379 | while(count); | |
380 | if(write_record(SREC3_END)) /* write the final record */ | |
381 | return (-1); | |
382 | return(0); | |
383 | } | |
384 | ||
385 | static int | |
386 | write_record (char *buf) | |
387 | { | |
388 | char c; | |
389 | ||
390 | while((c = *buf++)) | |
391 | serial_putc(c); | |
392 | ||
393 | /* Check for the console hangup (if any different from serial) */ | |
394 | ||
395 | if (ctrlc()) { | |
396 | return (-1); | |
397 | } | |
398 | return (0); | |
399 | } | |
400 | # endif /* CFG_CMD_SAVES */ | |
401 | ||
402 | #endif /* CFG_CMD_LOADS */ | |
403 | ||
404 | ||
405 | #if (CONFIG_COMMANDS & CFG_CMD_LOADB) /* loadb command (load binary) included */ | |
406 | ||
407 | #define XON_CHAR 17 | |
408 | #define XOFF_CHAR 19 | |
409 | #define START_CHAR 0x01 | |
410 | #define ETX_CHAR 0x03 | |
411 | #define END_CHAR 0x0D | |
412 | #define SPACE 0x20 | |
413 | #define K_ESCAPE 0x23 | |
414 | #define SEND_TYPE 'S' | |
415 | #define DATA_TYPE 'D' | |
416 | #define ACK_TYPE 'Y' | |
417 | #define NACK_TYPE 'N' | |
418 | #define BREAK_TYPE 'B' | |
419 | #define tochar(x) ((char) (((x) + SPACE) & 0xff)) | |
420 | #define untochar(x) ((int) (((x) - SPACE) & 0xff)) | |
421 | ||
422 | extern int os_data_count; | |
423 | extern int os_data_header[8]; | |
424 | ||
425 | static void set_kerm_bin_mode(unsigned long *); | |
426 | static int k_recv(void); | |
427 | static ulong load_serial_bin (ulong offset); | |
428 | ||
429 | ||
430 | char his_eol; /* character he needs at end of packet */ | |
431 | int his_pad_count; /* number of pad chars he needs */ | |
432 | char his_pad_char; /* pad chars he needs */ | |
433 | char his_quote; /* quote chars he'll use */ | |
434 | ||
435 | int do_load_serial_bin (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
436 | { | |
437 | DECLARE_GLOBAL_DATA_PTR; | |
438 | ||
439 | ulong offset = 0; | |
440 | ulong addr; | |
441 | int load_baudrate, current_baudrate; | |
442 | int rcode = 0; | |
443 | char *s; | |
444 | ||
445 | /* pre-set offset from CFG_LOAD_ADDR */ | |
446 | offset = CFG_LOAD_ADDR; | |
447 | ||
448 | /* pre-set offset from $loadaddr */ | |
449 | if ((s = getenv("loadaddr")) != NULL) { | |
450 | offset = simple_strtoul(s, NULL, 16); | |
451 | } | |
452 | ||
453 | load_baudrate = current_baudrate = gd->baudrate; | |
454 | ||
455 | if (argc >= 2) { | |
456 | offset = simple_strtoul(argv[1], NULL, 16); | |
457 | } | |
458 | if (argc == 3) { | |
459 | load_baudrate = (int)simple_strtoul(argv[2], NULL, 10); | |
460 | ||
461 | /* default to current baudrate */ | |
462 | if (load_baudrate == 0) | |
463 | load_baudrate = current_baudrate; | |
464 | } | |
465 | ||
466 | if (load_baudrate != current_baudrate) { | |
467 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
468 | load_baudrate); | |
469 | udelay(50000); | |
470 | gd->baudrate = load_baudrate; | |
471 | serial_setbrg (); | |
472 | udelay(50000); | |
473 | for (;;) { | |
474 | if (getc() == '\r') | |
475 | break; | |
476 | } | |
477 | } | |
478 | ||
479 | printf ("## Ready for binary (kermit) download " | |
480 | "to 0x%08lX at %d bps...\n", | |
481 | offset, | |
482 | current_baudrate); | |
483 | addr = load_serial_bin (offset); | |
484 | ||
485 | if (addr == ~0) { | |
486 | load_addr = 0; | |
487 | printf ("## Binary (kermit) download aborted\n"); | |
488 | rcode = 1; | |
489 | } else { | |
490 | printf ("## Start Addr = 0x%08lX\n", addr); | |
491 | load_addr = addr; | |
492 | } | |
493 | ||
494 | if (load_baudrate != current_baudrate) { | |
495 | printf ("## Switch baudrate to %d bps and press ESC ...\n", | |
496 | current_baudrate); | |
497 | udelay (50000); | |
498 | gd->baudrate = current_baudrate; | |
499 | serial_setbrg (); | |
500 | udelay (50000); | |
501 | for (;;) { | |
502 | if (getc() == 0x1B) /* ESC */ | |
503 | break; | |
504 | } | |
505 | } | |
506 | ||
507 | #ifdef CONFIG_AUTOSCRIPT | |
508 | if (load_addr) { | |
509 | char *s; | |
510 | ||
511 | if (((s = getenv("autoscript")) != NULL) && (strcmp(s,"yes") == 0)) { | |
512 | printf("Running autoscript at addr 0x%08lX ...\n", load_addr); | |
513 | rcode = autoscript (load_addr); | |
514 | } | |
515 | } | |
516 | #endif | |
517 | return rcode; | |
518 | } | |
519 | ||
520 | ||
521 | static ulong load_serial_bin (ulong offset) | |
522 | { | |
523 | int size, i; | |
524 | char buf[32]; | |
525 | ||
526 | set_kerm_bin_mode ((ulong *) offset); | |
527 | size = k_recv (); | |
528 | ||
529 | /* | |
530 | * Gather any trailing characters (for instance, the ^D which | |
531 | * is sent by 'cu' after sending a file), and give the | |
532 | * box some time (100 * 1 ms) | |
533 | */ | |
534 | for (i=0; i<100; ++i) { | |
535 | if (serial_tstc()) { | |
536 | (void) serial_getc(); | |
537 | } | |
538 | udelay(1000); | |
539 | } | |
540 | ||
541 | flush_cache (offset, size); | |
542 | ||
543 | printf("## Total Size = 0x%08x = %d Bytes\n", size, size); | |
544 | sprintf(buf, "%X", size); | |
545 | setenv("filesize", buf); | |
546 | ||
547 | return offset; | |
548 | } | |
549 | ||
550 | void send_pad (void) | |
551 | { | |
552 | int count = his_pad_count; | |
553 | ||
554 | while (count-- > 0) | |
555 | serial_putc (his_pad_char); | |
556 | } | |
557 | ||
558 | /* converts escaped kermit char to binary char */ | |
559 | char ktrans (char in) | |
560 | { | |
561 | if ((in & 0x60) == 0x40) { | |
562 | return (char) (in & ~0x40); | |
563 | } else if ((in & 0x7f) == 0x3f) { | |
564 | return (char) (in | 0x40); | |
565 | } else | |
566 | return in; | |
567 | } | |
568 | ||
569 | int chk1 (char *buffer) | |
570 | { | |
571 | int total = 0; | |
572 | ||
573 | while (*buffer) { | |
574 | total += *buffer++; | |
575 | } | |
576 | return (int) ((total + ((total >> 6) & 0x03)) & 0x3f); | |
577 | } | |
578 | ||
579 | void s1_sendpacket (char *packet) | |
580 | { | |
581 | send_pad (); | |
582 | while (*packet) { | |
583 | serial_putc (*packet++); | |
584 | } | |
585 | } | |
586 | ||
587 | static char a_b[24]; | |
588 | void send_ack (int n) | |
589 | { | |
590 | a_b[0] = START_CHAR; | |
591 | a_b[1] = tochar (3); | |
592 | a_b[2] = tochar (n); | |
593 | a_b[3] = ACK_TYPE; | |
594 | a_b[4] = '\0'; | |
595 | a_b[4] = tochar (chk1 (&a_b[1])); | |
596 | a_b[5] = his_eol; | |
597 | a_b[6] = '\0'; | |
598 | s1_sendpacket (a_b); | |
599 | } | |
600 | ||
601 | void send_nack (int n) | |
602 | { | |
603 | a_b[0] = START_CHAR; | |
604 | a_b[1] = tochar (3); | |
605 | a_b[2] = tochar (n); | |
606 | a_b[3] = NACK_TYPE; | |
607 | a_b[4] = '\0'; | |
608 | a_b[4] = tochar (chk1 (&a_b[1])); | |
609 | a_b[5] = his_eol; | |
610 | a_b[6] = '\0'; | |
611 | s1_sendpacket (a_b); | |
612 | } | |
613 | ||
614 | ||
615 | /* os_data_* takes an OS Open image and puts it into memory, and | |
616 | puts the boot header in an array named os_data_header | |
617 | ||
618 | if image is binary, no header is stored in os_data_header. | |
619 | */ | |
620 | void (*os_data_init) (void); | |
621 | void (*os_data_char) (char new_char); | |
622 | static int os_data_state, os_data_state_saved; | |
623 | int os_data_count; | |
624 | static int os_data_count_saved; | |
625 | static char *os_data_addr, *os_data_addr_saved; | |
626 | static char *bin_start_address; | |
627 | int os_data_header[8]; | |
628 | static void bin_data_init (void) | |
629 | { | |
630 | os_data_state = 0; | |
631 | os_data_count = 0; | |
632 | os_data_addr = bin_start_address; | |
633 | } | |
634 | static void os_data_save (void) | |
635 | { | |
636 | os_data_state_saved = os_data_state; | |
637 | os_data_count_saved = os_data_count; | |
638 | os_data_addr_saved = os_data_addr; | |
639 | } | |
640 | static void os_data_restore (void) | |
641 | { | |
642 | os_data_state = os_data_state_saved; | |
643 | os_data_count = os_data_count_saved; | |
644 | os_data_addr = os_data_addr_saved; | |
645 | } | |
646 | static void bin_data_char (char new_char) | |
647 | { | |
648 | switch (os_data_state) { | |
649 | case 0: /* data */ | |
650 | *os_data_addr++ = new_char; | |
651 | --os_data_count; | |
652 | break; | |
653 | } | |
654 | } | |
655 | static void set_kerm_bin_mode (unsigned long *addr) | |
656 | { | |
657 | bin_start_address = (char *) addr; | |
658 | os_data_init = bin_data_init; | |
659 | os_data_char = bin_data_char; | |
660 | } | |
661 | ||
662 | ||
663 | /* k_data_* simply handles the kermit escape translations */ | |
664 | static int k_data_escape, k_data_escape_saved; | |
665 | void k_data_init (void) | |
666 | { | |
667 | k_data_escape = 0; | |
668 | os_data_init (); | |
669 | } | |
670 | void k_data_save (void) | |
671 | { | |
672 | k_data_escape_saved = k_data_escape; | |
673 | os_data_save (); | |
674 | } | |
675 | void k_data_restore (void) | |
676 | { | |
677 | k_data_escape = k_data_escape_saved; | |
678 | os_data_restore (); | |
679 | } | |
680 | void k_data_char (char new_char) | |
681 | { | |
682 | if (k_data_escape) { | |
683 | /* last char was escape - translate this character */ | |
684 | os_data_char (ktrans (new_char)); | |
685 | k_data_escape = 0; | |
686 | } else { | |
687 | if (new_char == his_quote) { | |
688 | /* this char is escape - remember */ | |
689 | k_data_escape = 1; | |
690 | } else { | |
691 | /* otherwise send this char as-is */ | |
692 | os_data_char (new_char); | |
693 | } | |
694 | } | |
695 | } | |
696 | ||
697 | #define SEND_DATA_SIZE 20 | |
698 | char send_parms[SEND_DATA_SIZE]; | |
699 | char *send_ptr; | |
700 | ||
701 | /* handle_send_packet interprits the protocol info and builds and | |
702 | sends an appropriate ack for what we can do */ | |
703 | void handle_send_packet (int n) | |
704 | { | |
705 | int length = 3; | |
706 | int bytes; | |
707 | ||
708 | /* initialize some protocol parameters */ | |
709 | his_eol = END_CHAR; /* default end of line character */ | |
710 | his_pad_count = 0; | |
711 | his_pad_char = '\0'; | |
712 | his_quote = K_ESCAPE; | |
713 | ||
714 | /* ignore last character if it filled the buffer */ | |
715 | if (send_ptr == &send_parms[SEND_DATA_SIZE - 1]) | |
716 | --send_ptr; | |
717 | bytes = send_ptr - send_parms; /* how many bytes we'll process */ | |
718 | do { | |
719 | if (bytes-- <= 0) | |
720 | break; | |
721 | /* handle MAXL - max length */ | |
722 | /* ignore what he says - most I'll take (here) is 94 */ | |
723 | a_b[++length] = tochar (94); | |
724 | if (bytes-- <= 0) | |
725 | break; | |
726 | /* handle TIME - time you should wait for my packets */ | |
727 | /* ignore what he says - don't wait for my ack longer than 1 second */ | |
728 | a_b[++length] = tochar (1); | |
729 | if (bytes-- <= 0) | |
730 | break; | |
731 | /* handle NPAD - number of pad chars I need */ | |
732 | /* remember what he says - I need none */ | |
733 | his_pad_count = untochar (send_parms[2]); | |
734 | a_b[++length] = tochar (0); | |
735 | if (bytes-- <= 0) | |
736 | break; | |
737 | /* handle PADC - pad chars I need */ | |
738 | /* remember what he says - I need none */ | |
739 | his_pad_char = ktrans (send_parms[3]); | |
740 | a_b[++length] = 0x40; /* He should ignore this */ | |
741 | if (bytes-- <= 0) | |
742 | break; | |
743 | /* handle EOL - end of line he needs */ | |
744 | /* remember what he says - I need CR */ | |
745 | his_eol = untochar (send_parms[4]); | |
746 | a_b[++length] = tochar (END_CHAR); | |
747 | if (bytes-- <= 0) | |
748 | break; | |
749 | /* handle QCTL - quote control char he'll use */ | |
750 | /* remember what he says - I'll use '#' */ | |
751 | his_quote = send_parms[5]; | |
752 | a_b[++length] = '#'; | |
753 | if (bytes-- <= 0) | |
754 | break; | |
755 | /* handle QBIN - 8-th bit prefixing */ | |
756 | /* ignore what he says - I refuse */ | |
757 | a_b[++length] = 'N'; | |
758 | if (bytes-- <= 0) | |
759 | break; | |
760 | /* handle CHKT - the clock check type */ | |
761 | /* ignore what he says - I do type 1 (for now) */ | |
762 | a_b[++length] = '1'; | |
763 | if (bytes-- <= 0) | |
764 | break; | |
765 | /* handle REPT - the repeat prefix */ | |
766 | /* ignore what he says - I refuse (for now) */ | |
767 | a_b[++length] = 'N'; | |
768 | if (bytes-- <= 0) | |
769 | break; | |
770 | /* handle CAPAS - the capabilities mask */ | |
771 | /* ignore what he says - I only do long packets - I don't do windows */ | |
772 | a_b[++length] = tochar (2); /* only long packets */ | |
773 | a_b[++length] = tochar (0); /* no windows */ | |
774 | a_b[++length] = tochar (94); /* large packet msb */ | |
775 | a_b[++length] = tochar (94); /* large packet lsb */ | |
776 | } while (0); | |
777 | ||
778 | a_b[0] = START_CHAR; | |
779 | a_b[1] = tochar (length); | |
780 | a_b[2] = tochar (n); | |
781 | a_b[3] = ACK_TYPE; | |
782 | a_b[++length] = '\0'; | |
783 | a_b[length] = tochar (chk1 (&a_b[1])); | |
784 | a_b[++length] = his_eol; | |
785 | a_b[++length] = '\0'; | |
786 | s1_sendpacket (a_b); | |
787 | } | |
788 | ||
789 | /* k_recv receives a OS Open image file over kermit line */ | |
790 | static int k_recv (void) | |
791 | { | |
792 | char new_char; | |
793 | char k_state, k_state_saved; | |
794 | int sum; | |
795 | int done; | |
796 | int length; | |
797 | int n, last_n; | |
798 | int z = 0; | |
799 | int len_lo, len_hi; | |
800 | ||
801 | /* initialize some protocol parameters */ | |
802 | his_eol = END_CHAR; /* default end of line character */ | |
803 | his_pad_count = 0; | |
804 | his_pad_char = '\0'; | |
805 | his_quote = K_ESCAPE; | |
806 | ||
807 | /* initialize the k_recv and k_data state machine */ | |
808 | done = 0; | |
809 | k_state = 0; | |
810 | k_data_init (); | |
811 | k_state_saved = k_state; | |
812 | k_data_save (); | |
813 | n = 0; /* just to get rid of a warning */ | |
814 | last_n = -1; | |
815 | ||
816 | /* expect this "type" sequence (but don't check): | |
817 | S: send initiate | |
818 | F: file header | |
819 | D: data (multiple) | |
820 | Z: end of file | |
821 | B: break transmission | |
822 | */ | |
823 | ||
824 | /* enter main loop */ | |
825 | while (!done) { | |
826 | /* set the send packet pointer to begining of send packet parms */ | |
827 | send_ptr = send_parms; | |
828 | ||
829 | /* With each packet, start summing the bytes starting with the length. | |
830 | Save the current sequence number. | |
831 | Note the type of the packet. | |
832 | If a character less than SPACE (0x20) is received - error. | |
833 | */ | |
834 | ||
835 | #if 0 | |
836 | /* OLD CODE, Prior to checking sequence numbers */ | |
837 | /* first have all state machines save current states */ | |
838 | k_state_saved = k_state; | |
839 | k_data_save (); | |
840 | #endif | |
841 | ||
842 | /* get a packet */ | |
843 | /* wait for the starting character or ^C */ | |
844 | for (;;) { | |
845 | switch (serial_getc ()) { | |
846 | case START_CHAR: /* start packet */ | |
847 | goto START; | |
848 | case ETX_CHAR: /* ^C waiting for packet */ | |
849 | return (0); | |
850 | default: | |
851 | ; | |
852 | } | |
853 | } | |
854 | START: | |
855 | /* get length of packet */ | |
856 | sum = 0; | |
857 | new_char = serial_getc (); | |
858 | if ((new_char & 0xE0) == 0) | |
859 | goto packet_error; | |
860 | sum += new_char & 0xff; | |
861 | length = untochar (new_char); | |
862 | /* get sequence number */ | |
863 | new_char = serial_getc (); | |
864 | if ((new_char & 0xE0) == 0) | |
865 | goto packet_error; | |
866 | sum += new_char & 0xff; | |
867 | n = untochar (new_char); | |
868 | --length; | |
869 | ||
870 | /* NEW CODE - check sequence numbers for retried packets */ | |
871 | /* Note - this new code assumes that the sequence number is correctly | |
872 | * received. Handling an invalid sequence number adds another layer | |
873 | * of complexity that may not be needed - yet! At this time, I'm hoping | |
874 | * that I don't need to buffer the incoming data packets and can write | |
875 | * the data into memory in real time. | |
876 | */ | |
877 | if (n == last_n) { | |
878 | /* same sequence number, restore the previous state */ | |
879 | k_state = k_state_saved; | |
880 | k_data_restore (); | |
881 | } else { | |
882 | /* new sequence number, checkpoint the download */ | |
883 | last_n = n; | |
884 | k_state_saved = k_state; | |
885 | k_data_save (); | |
886 | } | |
887 | /* END NEW CODE */ | |
888 | ||
889 | /* get packet type */ | |
890 | new_char = serial_getc (); | |
891 | if ((new_char & 0xE0) == 0) | |
892 | goto packet_error; | |
893 | sum += new_char & 0xff; | |
894 | k_state = new_char; | |
895 | --length; | |
896 | /* check for extended length */ | |
897 | if (length == -2) { | |
898 | /* (length byte was 0, decremented twice) */ | |
899 | /* get the two length bytes */ | |
900 | new_char = serial_getc (); | |
901 | if ((new_char & 0xE0) == 0) | |
902 | goto packet_error; | |
903 | sum += new_char & 0xff; | |
904 | len_hi = untochar (new_char); | |
905 | new_char = serial_getc (); | |
906 | if ((new_char & 0xE0) == 0) | |
907 | goto packet_error; | |
908 | sum += new_char & 0xff; | |
909 | len_lo = untochar (new_char); | |
910 | length = len_hi * 95 + len_lo; | |
911 | /* check header checksum */ | |
912 | new_char = serial_getc (); | |
913 | if ((new_char & 0xE0) == 0) | |
914 | goto packet_error; | |
915 | if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f)) | |
916 | goto packet_error; | |
917 | sum += new_char & 0xff; | |
918 | /* --length; */ /* new length includes only data and block check to come */ | |
919 | } | |
920 | /* bring in rest of packet */ | |
921 | while (length > 1) { | |
922 | new_char = serial_getc (); | |
923 | if ((new_char & 0xE0) == 0) | |
924 | goto packet_error; | |
925 | sum += new_char & 0xff; | |
926 | --length; | |
927 | if (k_state == DATA_TYPE) { | |
928 | /* pass on the data if this is a data packet */ | |
929 | k_data_char (new_char); | |
930 | } else if (k_state == SEND_TYPE) { | |
931 | /* save send pack in buffer as is */ | |
932 | *send_ptr++ = new_char; | |
933 | /* if too much data, back off the pointer */ | |
934 | if (send_ptr >= &send_parms[SEND_DATA_SIZE]) | |
935 | --send_ptr; | |
936 | } | |
937 | } | |
938 | /* get and validate checksum character */ | |
939 | new_char = serial_getc (); | |
940 | if ((new_char & 0xE0) == 0) | |
941 | goto packet_error; | |
942 | if (new_char != tochar ((sum + ((sum >> 6) & 0x03)) & 0x3f)) | |
943 | goto packet_error; | |
944 | /* get END_CHAR */ | |
945 | new_char = serial_getc (); | |
946 | if (new_char != END_CHAR) { | |
947 | packet_error: | |
948 | /* restore state machines */ | |
949 | k_state = k_state_saved; | |
950 | k_data_restore (); | |
951 | /* send a negative acknowledge packet in */ | |
952 | send_nack (n); | |
953 | } else if (k_state == SEND_TYPE) { | |
954 | /* crack the protocol parms, build an appropriate ack packet */ | |
955 | handle_send_packet (n); | |
956 | } else { | |
957 | /* send simple acknowledge packet in */ | |
958 | send_ack (n); | |
959 | /* quit if end of transmission */ | |
960 | if (k_state == BREAK_TYPE) | |
961 | done = 1; | |
962 | } | |
963 | ++z; | |
964 | } | |
965 | return ((ulong) os_data_addr - (ulong) bin_start_address); | |
966 | } | |
967 | #endif /* CFG_CMD_LOADB */ | |
968 | ||
969 | /* -------------------------------------------------------------------- */ | |
970 | ||
971 | #if (CONFIG_COMMANDS & CFG_CMD_LOADS) | |
972 | ||
973 | #ifdef CFG_LOADS_BAUD_CHANGE | |
0d498393 WD |
974 | U_BOOT_CMD( |
975 | loads, 3, 0, do_load_serial, | |
8bde7f77 WD |
976 | "loads - load S-Record file over serial line\n", |
977 | "[ off ] [ baud ]\n" | |
978 | " - load S-Record file over serial line" | |
979 | " with offset 'off' and baudrate 'baud'\n" | |
980 | ); | |
981 | ||
982 | #else /* ! CFG_LOADS_BAUD_CHANGE */ | |
0d498393 WD |
983 | U_BOOT_CMD( |
984 | loads, 2, 0, do_load_serial, | |
8bde7f77 WD |
985 | "loads - load S-Record file over serial line\n", |
986 | "[ off ]\n" | |
987 | " - load S-Record file over serial line with offset 'off'\n" | |
988 | ); | |
989 | #endif /* CFG_LOADS_BAUD_CHANGE */ | |
990 | ||
991 | /* | |
992 | * SAVES always requires LOADS support, but not vice versa | |
993 | */ | |
994 | ||
995 | ||
996 | #if (CONFIG_COMMANDS & CFG_CMD_SAVES) | |
997 | #ifdef CFG_LOADS_BAUD_CHANGE | |
0d498393 WD |
998 | U_BOOT_CMD( |
999 | saves, 4, 0, do_save_serial, | |
8bde7f77 WD |
1000 | "saves - save S-Record file over serial line\n", |
1001 | "[ off ] [size] [ baud ]\n" | |
1002 | " - save S-Record file over serial line" | |
1003 | " with offset 'off', size 'size' and baudrate 'baud'\n" | |
1004 | ); | |
1005 | #else /* ! CFG_LOADS_BAUD_CHANGE */ | |
0d498393 WD |
1006 | U_BOOT_CMD( |
1007 | saves, 3, 0, do_save_serial, | |
8bde7f77 WD |
1008 | "saves - save S-Record file over serial line\n", |
1009 | "[ off ] [size]\n" | |
1010 | " - save S-Record file over serial line with offset 'off' and size 'size'\n" | |
1011 | ); | |
1012 | #endif /* CFG_LOADS_BAUD_CHANGE */ | |
1013 | #endif /* CFG_CMD_SAVES */ | |
1014 | #endif /* CFG_CMD_LOADS */ | |
1015 | ||
1016 | ||
1017 | #if (CONFIG_COMMANDS & CFG_CMD_LOADB) | |
0d498393 WD |
1018 | U_BOOT_CMD( |
1019 | loadb, 3, 0, do_load_serial_bin, | |
8bde7f77 WD |
1020 | "loadb - load binary file over serial line (kermit mode)\n", |
1021 | "[ off ] [ baud ]\n" | |
1022 | " - load binary file over serial line" | |
1023 | " with offset 'off' and baudrate 'baud'\n" | |
1024 | ); | |
1025 | ||
1026 | #endif /* CFG_CMD_LOADB */ | |
1027 | ||
1028 | /* -------------------------------------------------------------------- */ | |
1029 | ||
1030 | #if (CONFIG_COMMANDS & CFG_CMD_HWFLOW) | |
1031 | int do_hwflow (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
1032 | { | |
1033 | extern int hwflow_onoff(int); | |
1034 | ||
1035 | if (argc == 2) { | |
1036 | if (strcmp(argv[1], "off") == 0) | |
1037 | hwflow_onoff(-1); | |
1038 | else | |
1039 | if (strcmp(argv[1], "on") == 0) | |
1040 | hwflow_onoff(1); | |
1041 | else | |
1042 | printf("Usage: %s\n", cmdtp->usage); | |
1043 | } | |
1044 | printf("RTS/CTS hardware flow control: %s\n", hwflow_onoff(0) ? "on" : "off"); | |
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | /* -------------------------------------------------------------------- */ | |
1049 | ||
0d498393 | 1050 | U_BOOT_CMD( |
f12e568c | 1051 | hwflow, 2, 0, do_hwflow, |
8bde7f77 | 1052 | "hwflow - turn the harwdare flow control on/off\n", |
f12e568c | 1053 | "[on|off]\n - change RTS/CTS hardware flow control over serial line\n" |
8bde7f77 WD |
1054 | ); |
1055 | ||
1056 | #endif /* CFG_CMD_HWFLOW */ |