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c609719b WD |
1 | /* |
2 | * (C) Copyright 2000 | |
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 | ||
a6c7ad2f WD |
24 | /* #define DEBUG */ |
25 | ||
c609719b WD |
26 | #include <common.h> |
27 | #include <watchdog.h> | |
28 | #include <command.h> | |
c609719b | 29 | #include <malloc.h> |
c609719b WD |
30 | |
31 | #ifdef CFG_HUSH_PARSER | |
32 | #include <hush.h> | |
33 | #endif | |
34 | ||
bdccc4fe WD |
35 | #include <post.h> |
36 | ||
8bde7f77 WD |
37 | #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY) |
38 | extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* for do_reset() prototype */ | |
39 | #endif | |
40 | ||
41 | extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); | |
42 | ||
43 | ||
c609719b WD |
44 | #define MAX_DELAY_STOP_STR 32 |
45 | ||
46 | static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen); | |
47 | static int parse_line (char *, char *[]); | |
48 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
49 | static int abortboot(int); | |
50 | #endif | |
51 | ||
52 | #undef DEBUG_PARSER | |
53 | ||
54 | char console_buffer[CFG_CBSIZE]; /* console I/O buffer */ | |
55 | ||
56 | static char erase_seq[] = "\b \b"; /* erase sequence */ | |
57 | static char tab_seq[] = " "; /* used to expand TABs */ | |
58 | ||
59 | #ifdef CONFIG_BOOT_RETRY_TIME | |
60 | static uint64_t endtime = 0; /* must be set, default is instant timeout */ | |
61 | static int retry_time = -1; /* -1 so can call readline before main_loop */ | |
62 | #endif | |
63 | ||
64 | #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk()) | |
65 | ||
66 | #ifndef CONFIG_BOOT_RETRY_MIN | |
67 | #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME | |
68 | #endif | |
69 | ||
70 | #ifdef CONFIG_MODEM_SUPPORT | |
71 | int do_mdm_init = 0; | |
72 | extern void mdm_init(void); /* defined in board.c */ | |
73 | #endif | |
74 | ||
75 | /*************************************************************************** | |
76 | * Watch for 'delay' seconds for autoboot stop or autoboot delay string. | |
77 | * returns: 0 - no key string, allow autoboot | |
78 | * 1 - got key string, abort | |
79 | */ | |
80 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
81 | # if defined(CONFIG_AUTOBOOT_KEYED) | |
82 | static __inline__ int abortboot(int bootdelay) | |
83 | { | |
84 | int abort = 0; | |
85 | uint64_t etime = endtick(bootdelay); | |
86 | struct | |
87 | { | |
88 | char* str; | |
89 | u_int len; | |
90 | int retry; | |
91 | } | |
92 | delaykey [] = | |
93 | { | |
94 | { str: getenv ("bootdelaykey"), retry: 1 }, | |
95 | { str: getenv ("bootdelaykey2"), retry: 1 }, | |
96 | { str: getenv ("bootstopkey"), retry: 0 }, | |
97 | { str: getenv ("bootstopkey2"), retry: 0 }, | |
98 | }; | |
99 | ||
100 | char presskey [MAX_DELAY_STOP_STR]; | |
101 | u_int presskey_len = 0; | |
102 | u_int presskey_max = 0; | |
103 | u_int i; | |
104 | ||
105 | # ifdef CONFIG_AUTOBOOT_PROMPT | |
106 | printf (CONFIG_AUTOBOOT_PROMPT, bootdelay); | |
107 | # endif | |
108 | ||
109 | # ifdef CONFIG_AUTOBOOT_DELAY_STR | |
110 | if (delaykey[0].str == NULL) | |
111 | delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; | |
112 | # endif | |
113 | # ifdef CONFIG_AUTOBOOT_DELAY_STR2 | |
114 | if (delaykey[1].str == NULL) | |
115 | delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; | |
116 | # endif | |
117 | # ifdef CONFIG_AUTOBOOT_STOP_STR | |
118 | if (delaykey[2].str == NULL) | |
119 | delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; | |
120 | # endif | |
121 | # ifdef CONFIG_AUTOBOOT_STOP_STR2 | |
122 | if (delaykey[3].str == NULL) | |
123 | delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; | |
124 | # endif | |
125 | ||
126 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
127 | delaykey[i].len = delaykey[i].str == NULL ? | |
128 | 0 : strlen (delaykey[i].str); | |
129 | delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? | |
130 | MAX_DELAY_STOP_STR : delaykey[i].len; | |
131 | ||
132 | presskey_max = presskey_max > delaykey[i].len ? | |
133 | presskey_max : delaykey[i].len; | |
134 | ||
135 | # if DEBUG_BOOTKEYS | |
136 | printf("%s key:<%s>\n", | |
137 | delaykey[i].retry ? "delay" : "stop", | |
138 | delaykey[i].str ? delaykey[i].str : "NULL"); | |
139 | # endif | |
140 | } | |
141 | ||
142 | /* In order to keep up with incoming data, check timeout only | |
143 | * when catch up. | |
144 | */ | |
145 | while (!abort && get_ticks() <= etime) { | |
146 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) { | |
147 | if (delaykey[i].len > 0 && | |
148 | presskey_len >= delaykey[i].len && | |
149 | memcmp (presskey + presskey_len - delaykey[i].len, | |
8bde7f77 | 150 | delaykey[i].str, |
c609719b WD |
151 | delaykey[i].len) == 0) { |
152 | # if DEBUG_BOOTKEYS | |
153 | printf("got %skey\n", | |
154 | delaykey[i].retry ? "delay" : "stop"); | |
155 | # endif | |
156 | ||
157 | # ifdef CONFIG_BOOT_RETRY_TIME | |
158 | /* don't retry auto boot */ | |
159 | if (! delaykey[i].retry) | |
160 | retry_time = -1; | |
161 | # endif | |
162 | abort = 1; | |
163 | } | |
164 | } | |
165 | ||
166 | if (tstc()) { | |
167 | if (presskey_len < presskey_max) { | |
168 | presskey [presskey_len ++] = getc(); | |
169 | } | |
170 | else { | |
171 | for (i = 0; i < presskey_max - 1; i ++) | |
172 | presskey [i] = presskey [i + 1]; | |
173 | ||
174 | presskey [i] = getc(); | |
175 | } | |
176 | } | |
177 | } | |
178 | # if DEBUG_BOOTKEYS | |
179 | if (!abort) | |
180 | printf("key timeout\n"); | |
181 | # endif | |
182 | ||
183 | return abort; | |
184 | } | |
185 | ||
186 | # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ | |
187 | ||
c7de829c WD |
188 | #ifdef CONFIG_MENUKEY |
189 | static int menukey = 0; | |
190 | #endif | |
191 | ||
c609719b WD |
192 | static __inline__ int abortboot(int bootdelay) |
193 | { | |
194 | int abort = 0; | |
195 | ||
f72da340 WD |
196 | #ifdef CONFIG_SILENT_CONSOLE |
197 | { | |
198 | DECLARE_GLOBAL_DATA_PTR; | |
199 | ||
200 | if (gd->flags & GD_FLG_SILENT) { | |
201 | /* Restore serial console */ | |
202 | console_assign (stdout, "serial"); | |
203 | console_assign (stderr, "serial"); | |
204 | } | |
205 | } | |
206 | #endif | |
207 | ||
c7de829c WD |
208 | #ifdef CONFIG_MENUPROMPT |
209 | printf(CONFIG_MENUPROMPT, bootdelay); | |
210 | #else | |
c609719b | 211 | printf("Hit any key to stop autoboot: %2d ", bootdelay); |
c7de829c | 212 | #endif |
c609719b WD |
213 | |
214 | #if defined CONFIG_ZERO_BOOTDELAY_CHECK | |
8bde7f77 WD |
215 | /* |
216 | * Check if key already pressed | |
217 | * Don't check if bootdelay < 0 | |
218 | */ | |
c609719b WD |
219 | if (bootdelay >= 0) { |
220 | if (tstc()) { /* we got a key press */ | |
221 | (void) getc(); /* consume input */ | |
f72da340 WD |
222 | printf ("\b\b\b 0"); |
223 | abort = 1; /* don't auto boot */ | |
c609719b | 224 | } |
8bde7f77 | 225 | } |
c609719b WD |
226 | #endif |
227 | ||
f72da340 | 228 | while ((bootdelay > 0) && (!abort)) { |
c609719b WD |
229 | int i; |
230 | ||
231 | --bootdelay; | |
232 | /* delay 100 * 10ms */ | |
233 | for (i=0; !abort && i<100; ++i) { | |
234 | if (tstc()) { /* we got a key press */ | |
235 | abort = 1; /* don't auto boot */ | |
236 | bootdelay = 0; /* no more delay */ | |
c7de829c WD |
237 | # ifdef CONFIG_MENUKEY |
238 | menukey = getc(); | |
239 | # else | |
c609719b | 240 | (void) getc(); /* consume input */ |
c7de829c | 241 | # endif |
c609719b WD |
242 | break; |
243 | } | |
244 | udelay (10000); | |
245 | } | |
246 | ||
247 | printf ("\b\b\b%2d ", bootdelay); | |
248 | } | |
249 | ||
250 | putc ('\n'); | |
251 | ||
f72da340 WD |
252 | #ifdef CONFIG_SILENT_CONSOLE |
253 | { | |
254 | DECLARE_GLOBAL_DATA_PTR; | |
255 | ||
256 | if (abort) { | |
257 | /* permanently enable normal console output */ | |
258 | gd->flags &= ~(GD_FLG_SILENT); | |
259 | } else if (gd->flags & GD_FLG_SILENT) { | |
260 | /* Restore silent console */ | |
261 | console_assign (stdout, "nulldev"); | |
262 | console_assign (stderr, "nulldev"); | |
263 | } | |
264 | } | |
265 | #endif | |
266 | ||
c609719b WD |
267 | return abort; |
268 | } | |
269 | # endif /* CONFIG_AUTOBOOT_KEYED */ | |
270 | #endif /* CONFIG_BOOTDELAY >= 0 */ | |
271 | ||
272 | /****************************************************************************/ | |
273 | ||
274 | void main_loop (void) | |
275 | { | |
276 | #ifndef CFG_HUSH_PARSER | |
277 | static char lastcommand[CFG_CBSIZE] = { 0, }; | |
278 | int len; | |
279 | int rc = 1; | |
280 | int flag; | |
281 | #endif | |
282 | ||
283 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
284 | char *s; | |
285 | int bootdelay; | |
286 | #endif | |
287 | #ifdef CONFIG_PREBOOT | |
288 | char *p; | |
289 | #endif | |
bdccc4fe WD |
290 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
291 | unsigned long bootcount = 0; | |
292 | unsigned long bootlimit = 0; | |
293 | char *bcs; | |
294 | char bcs_set[16]; | |
295 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
c609719b WD |
296 | |
297 | #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO) | |
298 | ulong bmp = 0; /* default bitmap */ | |
299 | extern int trab_vfd (ulong bitmap); | |
300 | ||
301 | #ifdef CONFIG_MODEM_SUPPORT | |
302 | if (do_mdm_init) | |
303 | bmp = 1; /* alternate bitmap */ | |
304 | #endif | |
305 | trab_vfd (bmp); | |
306 | #endif /* CONFIG_VFD && VFD_TEST_LOGO */ | |
307 | ||
bdccc4fe WD |
308 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
309 | bootcount = bootcount_load(); | |
310 | bootcount++; | |
311 | bootcount_store (bootcount); | |
312 | sprintf (bcs_set, "%lu", bootcount); | |
313 | setenv ("bootcount", bcs_set); | |
314 | bcs = getenv ("bootlimit"); | |
315 | bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0; | |
316 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
317 | ||
c609719b WD |
318 | #ifdef CONFIG_MODEM_SUPPORT |
319 | debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init); | |
320 | if (do_mdm_init) { | |
321 | uchar *str = strdup(getenv("mdm_cmd")); | |
322 | setenv ("preboot", str); /* set or delete definition */ | |
323 | if (str != NULL) | |
324 | free (str); | |
325 | mdm_init(); /* wait for modem connection */ | |
326 | } | |
327 | #endif /* CONFIG_MODEM_SUPPORT */ | |
328 | ||
0587597c SR |
329 | #ifdef CONFIG_VERSION_VARIABLE |
330 | { | |
331 | extern char version_string[]; | |
0587597c | 332 | |
155cb010 | 333 | setenv ("ver", version_string); /* set version variable */ |
0587597c SR |
334 | } |
335 | #endif /* CONFIG_VERSION_VARIABLE */ | |
336 | ||
c609719b WD |
337 | #ifdef CFG_HUSH_PARSER |
338 | u_boot_hush_start (); | |
339 | #endif | |
340 | ||
341 | #ifdef CONFIG_PREBOOT | |
342 | if ((p = getenv ("preboot")) != NULL) { | |
343 | # ifdef CONFIG_AUTOBOOT_KEYED | |
344 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
345 | # endif | |
346 | ||
347 | # ifndef CFG_HUSH_PARSER | |
348 | run_command (p, 0); | |
349 | # else | |
350 | parse_string_outer(p, FLAG_PARSE_SEMICOLON | | |
351 | FLAG_EXIT_FROM_LOOP); | |
352 | # endif | |
353 | ||
354 | # ifdef CONFIG_AUTOBOOT_KEYED | |
355 | disable_ctrlc(prev); /* restore Control C checking */ | |
356 | # endif | |
357 | } | |
358 | #endif /* CONFIG_PREBOOT */ | |
359 | ||
360 | #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0) | |
361 | s = getenv ("bootdelay"); | |
362 | bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; | |
363 | ||
a6c7ad2f | 364 | debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay); |
c609719b WD |
365 | |
366 | # ifdef CONFIG_BOOT_RETRY_TIME | |
6dd652fa | 367 | init_cmd_timeout (); |
c609719b WD |
368 | # endif /* CONFIG_BOOT_RETRY_TIME */ |
369 | ||
bdccc4fe WD |
370 | #ifdef CONFIG_BOOTCOUNT_LIMIT |
371 | if (bootlimit && (bootcount > bootlimit)) { | |
372 | printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", | |
373 | (unsigned)bootlimit); | |
374 | s = getenv ("altbootcmd"); | |
375 | } | |
376 | else | |
377 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
378 | s = getenv ("bootcmd"); | |
a6c7ad2f WD |
379 | |
380 | debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); | |
381 | ||
c609719b WD |
382 | if (bootdelay >= 0 && s && !abortboot (bootdelay)) { |
383 | # ifdef CONFIG_AUTOBOOT_KEYED | |
384 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
385 | # endif | |
386 | ||
387 | # ifndef CFG_HUSH_PARSER | |
388 | run_command (s, 0); | |
389 | # else | |
390 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
391 | FLAG_EXIT_FROM_LOOP); | |
392 | # endif | |
393 | ||
394 | # ifdef CONFIG_AUTOBOOT_KEYED | |
395 | disable_ctrlc(prev); /* restore Control C checking */ | |
396 | # endif | |
397 | } | |
c7de829c WD |
398 | |
399 | # ifdef CONFIG_MENUKEY | |
a6c7ad2f | 400 | if (menukey == CONFIG_MENUKEY) { |
c7de829c | 401 | s = getenv("menucmd"); |
a6c7ad2f | 402 | if (s) { |
c7de829c WD |
403 | # ifndef CFG_HUSH_PARSER |
404 | run_command (s, bd, 0); | |
405 | # else | |
406 | parse_string_outer(s, FLAG_PARSE_SEMICOLON | | |
407 | FLAG_EXIT_FROM_LOOP); | |
408 | # endif | |
409 | } | |
410 | } | |
411 | #endif /* CONFIG_MENUKEY */ | |
c609719b WD |
412 | #endif /* CONFIG_BOOTDELAY */ |
413 | ||
c7de829c WD |
414 | #ifdef CONFIG_AMIGAONEG3SE |
415 | { | |
416 | extern void video_banner(void); | |
417 | video_banner(); | |
418 | } | |
419 | #endif | |
420 | ||
c609719b WD |
421 | /* |
422 | * Main Loop for Monitor Command Processing | |
423 | */ | |
424 | #ifdef CFG_HUSH_PARSER | |
425 | parse_file_outer(); | |
426 | /* This point is never reached */ | |
427 | for (;;); | |
428 | #else | |
429 | for (;;) { | |
430 | #ifdef CONFIG_BOOT_RETRY_TIME | |
431 | if (rc >= 0) { | |
432 | /* Saw enough of a valid command to | |
433 | * restart the timeout. | |
434 | */ | |
435 | reset_cmd_timeout(); | |
436 | } | |
437 | #endif | |
438 | len = readline (CFG_PROMPT); | |
439 | ||
440 | flag = 0; /* assume no special flags for now */ | |
441 | if (len > 0) | |
442 | strcpy (lastcommand, console_buffer); | |
443 | else if (len == 0) | |
444 | flag |= CMD_FLAG_REPEAT; | |
445 | #ifdef CONFIG_BOOT_RETRY_TIME | |
446 | else if (len == -2) { | |
447 | /* -2 means timed out, retry autoboot | |
448 | */ | |
449 | printf("\nTimed out waiting for command\n"); | |
450 | # ifdef CONFIG_RESET_TO_RETRY | |
451 | /* Reinit board to run initialization code again */ | |
452 | do_reset (NULL, 0, 0, NULL); | |
453 | # else | |
454 | return; /* retry autoboot */ | |
455 | # endif | |
456 | } | |
457 | #endif | |
458 | ||
459 | if (len == -1) | |
460 | printf ("<INTERRUPT>\n"); | |
461 | else | |
462 | rc = run_command (lastcommand, flag); | |
463 | ||
464 | if (rc <= 0) { | |
465 | /* invalid command or not repeatable, forget it */ | |
466 | lastcommand[0] = 0; | |
467 | } | |
468 | } | |
469 | #endif /*CFG_HUSH_PARSER*/ | |
470 | } | |
471 | ||
6dd652fa WD |
472 | #ifdef CONFIG_BOOT_RETRY_TIME |
473 | /*************************************************************************** | |
474 | * initialise command line timeout | |
475 | */ | |
476 | void init_cmd_timeout(void) | |
477 | { | |
478 | char *s = getenv ("bootretry"); | |
479 | ||
480 | if (s != NULL) | |
481 | retry_time = (int)simple_strtoul(s, NULL, 10); | |
482 | else | |
483 | retry_time = CONFIG_BOOT_RETRY_TIME; | |
484 | ||
485 | if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN) | |
486 | retry_time = CONFIG_BOOT_RETRY_MIN; | |
487 | } | |
488 | ||
c609719b WD |
489 | /*************************************************************************** |
490 | * reset command line timeout to retry_time seconds | |
491 | */ | |
c609719b WD |
492 | void reset_cmd_timeout(void) |
493 | { | |
494 | endtime = endtick(retry_time); | |
495 | } | |
496 | #endif | |
497 | ||
498 | /****************************************************************************/ | |
499 | ||
500 | /* | |
501 | * Prompt for input and read a line. | |
502 | * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0, | |
503 | * time out when time goes past endtime (timebase time in ticks). | |
504 | * Return: number of read characters | |
505 | * -1 if break | |
506 | * -2 if timed out | |
507 | */ | |
508 | int readline (const char *const prompt) | |
509 | { | |
510 | char *p = console_buffer; | |
511 | int n = 0; /* buffer index */ | |
512 | int plen = 0; /* prompt length */ | |
513 | int col; /* output column cnt */ | |
514 | char c; | |
515 | ||
516 | /* print prompt */ | |
517 | if (prompt) { | |
518 | plen = strlen (prompt); | |
519 | puts (prompt); | |
520 | } | |
521 | col = plen; | |
522 | ||
523 | for (;;) { | |
524 | #ifdef CONFIG_BOOT_RETRY_TIME | |
525 | while (!tstc()) { /* while no incoming data */ | |
526 | if (retry_time >= 0 && get_ticks() > endtime) | |
527 | return (-2); /* timed out */ | |
528 | } | |
529 | #endif | |
530 | WATCHDOG_RESET(); /* Trigger watchdog, if needed */ | |
531 | ||
532 | #ifdef CONFIG_SHOW_ACTIVITY | |
533 | while (!tstc()) { | |
534 | extern void show_activity(int arg); | |
535 | show_activity(0); | |
536 | } | |
537 | #endif | |
538 | c = getc(); | |
539 | ||
540 | /* | |
541 | * Special character handling | |
542 | */ | |
543 | switch (c) { | |
544 | case '\r': /* Enter */ | |
545 | case '\n': | |
546 | *p = '\0'; | |
547 | puts ("\r\n"); | |
548 | return (p - console_buffer); | |
549 | ||
550 | case 0x03: /* ^C - break */ | |
551 | console_buffer[0] = '\0'; /* discard input */ | |
552 | return (-1); | |
553 | ||
554 | case 0x15: /* ^U - erase line */ | |
555 | while (col > plen) { | |
556 | puts (erase_seq); | |
557 | --col; | |
558 | } | |
559 | p = console_buffer; | |
560 | n = 0; | |
561 | continue; | |
562 | ||
563 | case 0x17: /* ^W - erase word */ | |
564 | p=delete_char(console_buffer, p, &col, &n, plen); | |
565 | while ((n > 0) && (*p != ' ')) { | |
566 | p=delete_char(console_buffer, p, &col, &n, plen); | |
567 | } | |
568 | continue; | |
569 | ||
570 | case 0x08: /* ^H - backspace */ | |
571 | case 0x7F: /* DEL - backspace */ | |
572 | p=delete_char(console_buffer, p, &col, &n, plen); | |
573 | continue; | |
574 | ||
575 | default: | |
576 | /* | |
577 | * Must be a normal character then | |
578 | */ | |
579 | if (n < CFG_CBSIZE-2) { | |
580 | if (c == '\t') { /* expand TABs */ | |
581 | puts (tab_seq+(col&07)); | |
582 | col += 8 - (col&07); | |
583 | } else { | |
584 | ++col; /* echo input */ | |
585 | putc (c); | |
586 | } | |
587 | *p++ = c; | |
588 | ++n; | |
589 | } else { /* Buffer full */ | |
590 | putc ('\a'); | |
591 | } | |
592 | } | |
593 | } | |
594 | } | |
595 | ||
596 | /****************************************************************************/ | |
597 | ||
598 | static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen) | |
599 | { | |
600 | char *s; | |
601 | ||
602 | if (*np == 0) { | |
603 | return (p); | |
604 | } | |
605 | ||
606 | if (*(--p) == '\t') { /* will retype the whole line */ | |
607 | while (*colp > plen) { | |
608 | puts (erase_seq); | |
609 | (*colp)--; | |
610 | } | |
611 | for (s=buffer; s<p; ++s) { | |
612 | if (*s == '\t') { | |
613 | puts (tab_seq+((*colp) & 07)); | |
614 | *colp += 8 - ((*colp) & 07); | |
615 | } else { | |
616 | ++(*colp); | |
617 | putc (*s); | |
618 | } | |
619 | } | |
620 | } else { | |
621 | puts (erase_seq); | |
622 | (*colp)--; | |
623 | } | |
624 | (*np)--; | |
625 | return (p); | |
626 | } | |
627 | ||
628 | /****************************************************************************/ | |
629 | ||
630 | int parse_line (char *line, char *argv[]) | |
631 | { | |
632 | int nargs = 0; | |
633 | ||
634 | #ifdef DEBUG_PARSER | |
635 | printf ("parse_line: \"%s\"\n", line); | |
636 | #endif | |
637 | while (nargs < CFG_MAXARGS) { | |
638 | ||
639 | /* skip any white space */ | |
640 | while ((*line == ' ') || (*line == '\t')) { | |
641 | ++line; | |
642 | } | |
643 | ||
644 | if (*line == '\0') { /* end of line, no more args */ | |
645 | argv[nargs] = NULL; | |
646 | #ifdef DEBUG_PARSER | |
647 | printf ("parse_line: nargs=%d\n", nargs); | |
648 | #endif | |
649 | return (nargs); | |
650 | } | |
651 | ||
652 | argv[nargs++] = line; /* begin of argument string */ | |
653 | ||
654 | /* find end of string */ | |
655 | while (*line && (*line != ' ') && (*line != '\t')) { | |
656 | ++line; | |
657 | } | |
658 | ||
659 | if (*line == '\0') { /* end of line, no more args */ | |
660 | argv[nargs] = NULL; | |
661 | #ifdef DEBUG_PARSER | |
662 | printf ("parse_line: nargs=%d\n", nargs); | |
663 | #endif | |
664 | return (nargs); | |
665 | } | |
666 | ||
667 | *line++ = '\0'; /* terminate current arg */ | |
668 | } | |
669 | ||
670 | printf ("** Too many args (max. %d) **\n", CFG_MAXARGS); | |
671 | ||
672 | #ifdef DEBUG_PARSER | |
673 | printf ("parse_line: nargs=%d\n", nargs); | |
674 | #endif | |
675 | return (nargs); | |
676 | } | |
677 | ||
678 | /****************************************************************************/ | |
679 | ||
680 | static void process_macros (const char *input, char *output) | |
681 | { | |
682 | char c, prev; | |
683 | const char *varname_start = NULL; | |
684 | int inputcnt = strlen (input); | |
685 | int outputcnt = CFG_CBSIZE; | |
686 | int state = 0; /* 0 = waiting for '$' */ | |
687 | /* 1 = waiting for '(' */ | |
688 | /* 2 = waiting for ')' */ | |
8bde7f77 | 689 | /* 3 = waiting for ''' */ |
c609719b WD |
690 | #ifdef DEBUG_PARSER |
691 | char *output_start = output; | |
692 | ||
693 | printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input), input); | |
694 | #endif | |
695 | ||
696 | prev = '\0'; /* previous character */ | |
697 | ||
698 | while (inputcnt && outputcnt) { | |
699 | c = *input++; | |
700 | inputcnt--; | |
701 | ||
a25f862b | 702 | if (state!=3) { |
c609719b WD |
703 | /* remove one level of escape characters */ |
704 | if ((c == '\\') && (prev != '\\')) { | |
705 | if (inputcnt-- == 0) | |
706 | break; | |
707 | prev = c; | |
8bde7f77 | 708 | c = *input++; |
c609719b | 709 | } |
a25f862b | 710 | } |
c609719b WD |
711 | |
712 | switch (state) { | |
713 | case 0: /* Waiting for (unescaped) $ */ | |
a25f862b WD |
714 | if ((c == '\'') && (prev != '\\')) { |
715 | state = 3; | |
a25f862b WD |
716 | break; |
717 | } | |
c609719b WD |
718 | if ((c == '$') && (prev != '\\')) { |
719 | state++; | |
720 | } else { | |
721 | *(output++) = c; | |
722 | outputcnt--; | |
723 | } | |
724 | break; | |
725 | case 1: /* Waiting for ( */ | |
726 | if (c == '(') { | |
727 | state++; | |
728 | varname_start = input; | |
729 | } else { | |
730 | state = 0; | |
731 | *(output++) = '$'; | |
732 | outputcnt--; | |
733 | ||
734 | if (outputcnt) { | |
735 | *(output++) = c; | |
736 | outputcnt--; | |
737 | } | |
738 | } | |
739 | break; | |
740 | case 2: /* Waiting for ) */ | |
741 | if (c == ')') { | |
742 | int i; | |
743 | char envname[CFG_CBSIZE], *envval; | |
744 | int envcnt = input-varname_start-1; /* Varname # of chars */ | |
745 | ||
746 | /* Get the varname */ | |
747 | for (i = 0; i < envcnt; i++) { | |
748 | envname[i] = varname_start[i]; | |
749 | } | |
750 | envname[i] = 0; | |
751 | ||
752 | /* Get its value */ | |
753 | envval = getenv (envname); | |
754 | ||
755 | /* Copy into the line if it exists */ | |
756 | if (envval != NULL) | |
757 | while ((*envval) && outputcnt) { | |
758 | *(output++) = *(envval++); | |
759 | outputcnt--; | |
760 | } | |
761 | /* Look for another '$' */ | |
762 | state = 0; | |
763 | } | |
764 | break; | |
a25f862b WD |
765 | case 3: /* Waiting for ' */ |
766 | if ((c == '\'') && (prev != '\\')) { | |
767 | state = 0; | |
a25f862b WD |
768 | } else { |
769 | *(output++) = c; | |
770 | outputcnt--; | |
771 | } | |
772 | break; | |
c609719b | 773 | } |
c609719b WD |
774 | prev = c; |
775 | } | |
776 | ||
777 | if (outputcnt) | |
778 | *output = 0; | |
779 | ||
780 | #ifdef DEBUG_PARSER | |
781 | printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n", | |
782 | strlen(output_start), output_start); | |
783 | #endif | |
784 | } | |
785 | ||
786 | /**************************************************************************** | |
787 | * returns: | |
788 | * 1 - command executed, repeatable | |
789 | * 0 - command executed but not repeatable, interrupted commands are | |
790 | * always considered not repeatable | |
791 | * -1 - not executed (unrecognized, bootd recursion or too many args) | |
792 | * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is | |
793 | * considered unrecognized) | |
794 | * | |
795 | * WARNING: | |
796 | * | |
797 | * We must create a temporary copy of the command since the command we get | |
798 | * may be the result from getenv(), which returns a pointer directly to | |
799 | * the environment data, which may change magicly when the command we run | |
800 | * creates or modifies environment variables (like "bootp" does). | |
801 | */ | |
802 | ||
803 | int run_command (const char *cmd, int flag) | |
804 | { | |
805 | cmd_tbl_t *cmdtp; | |
806 | char cmdbuf[CFG_CBSIZE]; /* working copy of cmd */ | |
807 | char *token; /* start of token in cmdbuf */ | |
808 | char *sep; /* end of token (separator) in cmdbuf */ | |
809 | char finaltoken[CFG_CBSIZE]; | |
810 | char *str = cmdbuf; | |
811 | char *argv[CFG_MAXARGS + 1]; /* NULL terminated */ | |
f07771cc | 812 | int argc, inquotes; |
c609719b | 813 | int repeatable = 1; |
f07771cc | 814 | int rc = 0; |
c609719b WD |
815 | |
816 | #ifdef DEBUG_PARSER | |
817 | printf ("[RUN_COMMAND] cmd[%p]=\"", cmd); | |
818 | puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */ | |
819 | puts ("\"\n"); | |
820 | #endif | |
821 | ||
822 | clear_ctrlc(); /* forget any previous Control C */ | |
823 | ||
824 | if (!cmd || !*cmd) { | |
825 | return -1; /* empty command */ | |
826 | } | |
827 | ||
828 | if (strlen(cmd) >= CFG_CBSIZE) { | |
829 | puts ("## Command too long!\n"); | |
830 | return -1; | |
831 | } | |
832 | ||
833 | strcpy (cmdbuf, cmd); | |
834 | ||
835 | /* Process separators and check for invalid | |
836 | * repeatable commands | |
837 | */ | |
838 | ||
839 | #ifdef DEBUG_PARSER | |
840 | printf ("[PROCESS_SEPARATORS] %s\n", cmd); | |
841 | #endif | |
842 | while (*str) { | |
843 | ||
844 | /* | |
845 | * Find separator, or string end | |
846 | * Allow simple escape of ';' by writing "\;" | |
847 | */ | |
a25f862b WD |
848 | for (inquotes = 0, sep = str; *sep; sep++) { |
849 | if ((*sep=='\'') && | |
850 | (*(sep-1) != '\\')) | |
851 | inquotes=!inquotes; | |
852 | ||
853 | if (!inquotes && | |
854 | (*sep == ';') && /* separator */ | |
c609719b WD |
855 | ( sep != str) && /* past string start */ |
856 | (*(sep-1) != '\\')) /* and NOT escaped */ | |
857 | break; | |
858 | } | |
859 | ||
860 | /* | |
861 | * Limit the token to data between separators | |
862 | */ | |
863 | token = str; | |
864 | if (*sep) { | |
865 | str = sep + 1; /* start of command for next pass */ | |
866 | *sep = '\0'; | |
867 | } | |
868 | else | |
869 | str = sep; /* no more commands for next pass */ | |
870 | #ifdef DEBUG_PARSER | |
871 | printf ("token: \"%s\"\n", token); | |
872 | #endif | |
873 | ||
874 | /* find macros in this token and replace them */ | |
875 | process_macros (token, finaltoken); | |
876 | ||
877 | /* Extract arguments */ | |
878 | argc = parse_line (finaltoken, argv); | |
879 | ||
880 | /* Look up command in command table */ | |
881 | if ((cmdtp = find_cmd(argv[0])) == NULL) { | |
882 | printf ("Unknown command '%s' - try 'help'\n", argv[0]); | |
f07771cc WD |
883 | rc = -1; /* give up after bad command */ |
884 | continue; | |
c609719b WD |
885 | } |
886 | ||
887 | /* found - check max args */ | |
888 | if (argc > cmdtp->maxargs) { | |
889 | printf ("Usage:\n%s\n", cmdtp->usage); | |
f07771cc WD |
890 | rc = -1; |
891 | continue; | |
c609719b WD |
892 | } |
893 | ||
894 | #if (CONFIG_COMMANDS & CFG_CMD_BOOTD) | |
895 | /* avoid "bootd" recursion */ | |
896 | if (cmdtp->cmd == do_bootd) { | |
897 | #ifdef DEBUG_PARSER | |
898 | printf ("[%s]\n", finaltoken); | |
899 | #endif | |
900 | if (flag & CMD_FLAG_BOOTD) { | |
901 | printf ("'bootd' recursion detected\n"); | |
f07771cc WD |
902 | rc = -1; |
903 | continue; | |
c609719b WD |
904 | } |
905 | else | |
906 | flag |= CMD_FLAG_BOOTD; | |
907 | } | |
908 | #endif /* CFG_CMD_BOOTD */ | |
909 | ||
910 | /* OK - call function to do the command */ | |
911 | if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) { | |
f07771cc | 912 | rc = -1; |
c609719b WD |
913 | } |
914 | ||
915 | repeatable &= cmdtp->repeatable; | |
916 | ||
917 | /* Did the user stop this? */ | |
918 | if (had_ctrlc ()) | |
919 | return 0; /* if stopped then not repeatable */ | |
920 | } | |
921 | ||
f07771cc | 922 | return rc ? rc : repeatable; |
c609719b WD |
923 | } |
924 | ||
925 | /****************************************************************************/ | |
926 | ||
927 | #if (CONFIG_COMMANDS & CFG_CMD_RUN) | |
928 | int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
929 | { | |
930 | int i; | |
c609719b WD |
931 | |
932 | if (argc < 2) { | |
933 | printf ("Usage:\n%s\n", cmdtp->usage); | |
934 | return 1; | |
935 | } | |
936 | ||
937 | for (i=1; i<argc; ++i) { | |
3e38691e WD |
938 | char *arg; |
939 | ||
940 | if ((arg = getenv (argv[i])) == NULL) { | |
941 | printf ("## Error: \"%s\" not defined\n", argv[i]); | |
942 | return 1; | |
943 | } | |
c609719b | 944 | #ifndef CFG_HUSH_PARSER |
3e38691e WD |
945 | if (run_command (arg, flag) == -1) |
946 | return 1; | |
c609719b | 947 | #else |
3e38691e | 948 | if (parse_string_outer(arg, |
7aa78614 | 949 | FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0) |
3e38691e | 950 | return 1; |
c609719b WD |
951 | #endif |
952 | } | |
3e38691e | 953 | return 0; |
c609719b | 954 | } |
3e38691e | 955 | #endif /* CFG_CMD_RUN */ |