3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Add to readline cmdline-editing by
7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
34 #ifdef CONFIG_MODEM_SUPPORT
35 #include <malloc.h> /* for free() prototype */
38 #ifdef CONFIG_SYS_HUSH_PARSER
44 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
45 DECLARE_GLOBAL_DATA_PTR;
49 * Board-specific Platform code can reimplement show_boot_progress () if needed
51 void inline __show_boot_progress (int val) {}
52 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress")));
54 #if defined(CONFIG_UPDATE_TFTP)
55 int update_tftp (ulong addr);
56 #endif /* CONFIG_UPDATE_TFTP */
58 #define MAX_DELAY_STOP_STR 32
62 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */
64 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
65 static const char erase_seq[] = "\b \b"; /* erase sequence */
66 static const char tab_seq[] = " "; /* used to expand TABs */
68 #ifdef CONFIG_BOOT_RETRY_TIME
69 static uint64_t endtime = 0; /* must be set, default is instant timeout */
70 static int retry_time = -1; /* -1 so can call readline before main_loop */
73 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
75 #ifndef CONFIG_BOOT_RETRY_MIN
76 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
79 #ifdef CONFIG_MODEM_SUPPORT
81 extern void mdm_init(void); /* defined in board.c */
84 /***************************************************************************
85 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
86 * returns: 0 - no key string, allow autoboot
87 * 1 - got key string, abort
89 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
90 # if defined(CONFIG_AUTOBOOT_KEYED)
94 int abortboot(int bootdelay)
97 uint64_t etime = endtick(bootdelay);
104 { str: getenv ("bootdelaykey"), retry: 1 },
105 { str: getenv ("bootdelaykey2"), retry: 1 },
106 { str: getenv ("bootstopkey"), retry: 0 },
107 { str: getenv ("bootstopkey2"), retry: 0 },
110 char presskey [MAX_DELAY_STOP_STR];
111 u_int presskey_len = 0;
112 u_int presskey_max = 0;
115 # ifdef CONFIG_AUTOBOOT_PROMPT
116 printf(CONFIG_AUTOBOOT_PROMPT);
119 # ifdef CONFIG_AUTOBOOT_DELAY_STR
120 if (delaykey[0].str == NULL)
121 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
123 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
124 if (delaykey[1].str == NULL)
125 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
127 # ifdef CONFIG_AUTOBOOT_STOP_STR
128 if (delaykey[2].str == NULL)
129 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
131 # ifdef CONFIG_AUTOBOOT_STOP_STR2
132 if (delaykey[3].str == NULL)
133 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
136 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
137 delaykey[i].len = delaykey[i].str == NULL ?
138 0 : strlen (delaykey[i].str);
139 delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
140 MAX_DELAY_STOP_STR : delaykey[i].len;
142 presskey_max = presskey_max > delaykey[i].len ?
143 presskey_max : delaykey[i].len;
146 printf("%s key:<%s>\n",
147 delaykey[i].retry ? "delay" : "stop",
148 delaykey[i].str ? delaykey[i].str : "NULL");
152 /* In order to keep up with incoming data, check timeout only
157 if (presskey_len < presskey_max) {
158 presskey [presskey_len ++] = getc();
161 for (i = 0; i < presskey_max - 1; i ++)
162 presskey [i] = presskey [i + 1];
164 presskey [i] = getc();
168 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
169 if (delaykey[i].len > 0 &&
170 presskey_len >= delaykey[i].len &&
171 memcmp (presskey + presskey_len - delaykey[i].len,
173 delaykey[i].len) == 0) {
175 printf("got %skey\n",
176 delaykey[i].retry ? "delay" : "stop");
179 # ifdef CONFIG_BOOT_RETRY_TIME
180 /* don't retry auto boot */
181 if (! delaykey[i].retry)
187 } while (!abort && get_ticks() <= etime);
191 puts("key timeout\n");
194 #ifdef CONFIG_SILENT_CONSOLE
196 gd->flags &= ~GD_FLG_SILENT;
202 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
204 #ifdef CONFIG_MENUKEY
205 static int menukey = 0;
211 int abortboot(int bootdelay)
215 #ifdef CONFIG_MENUPROMPT
216 printf(CONFIG_MENUPROMPT);
218 printf("Hit any key to stop autoboot: %2d ", bootdelay);
221 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
223 * Check if key already pressed
224 * Don't check if bootdelay < 0
226 if (bootdelay >= 0) {
227 if (tstc()) { /* we got a key press */
228 (void) getc(); /* consume input */
230 abort = 1; /* don't auto boot */
235 while ((bootdelay > 0) && (!abort)) {
239 /* delay 100 * 10ms */
240 for (i=0; !abort && i<100; ++i) {
241 if (tstc()) { /* we got a key press */
242 abort = 1; /* don't auto boot */
243 bootdelay = 0; /* no more delay */
244 # ifdef CONFIG_MENUKEY
247 (void) getc(); /* consume input */
254 printf("\b\b\b%2d ", bootdelay);
259 #ifdef CONFIG_SILENT_CONSOLE
261 gd->flags &= ~GD_FLG_SILENT;
266 # endif /* CONFIG_AUTOBOOT_KEYED */
267 #endif /* CONFIG_BOOTDELAY >= 0 */
269 /****************************************************************************/
271 void main_loop (void)
273 #ifndef CONFIG_SYS_HUSH_PARSER
274 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, };
280 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
284 #ifdef CONFIG_PREBOOT
287 #ifdef CONFIG_BOOTCOUNT_LIMIT
288 unsigned long bootcount = 0;
289 unsigned long bootlimit = 0;
292 #endif /* CONFIG_BOOTCOUNT_LIMIT */
294 #ifdef CONFIG_BOOTCOUNT_LIMIT
295 bootcount = bootcount_load();
297 bootcount_store (bootcount);
298 sprintf (bcs_set, "%lu", bootcount);
299 setenv ("bootcount", bcs_set);
300 bcs = getenv ("bootlimit");
301 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
302 #endif /* CONFIG_BOOTCOUNT_LIMIT */
304 #ifdef CONFIG_MODEM_SUPPORT
305 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init);
307 char *str = strdup(getenv("mdm_cmd"));
308 setenv ("preboot", str); /* set or delete definition */
311 mdm_init(); /* wait for modem connection */
313 #endif /* CONFIG_MODEM_SUPPORT */
315 #ifdef CONFIG_VERSION_VARIABLE
317 setenv ("ver", version_string); /* set version variable */
319 #endif /* CONFIG_VERSION_VARIABLE */
321 #ifdef CONFIG_SYS_HUSH_PARSER
322 u_boot_hush_start ();
325 #if defined(CONFIG_HUSH_INIT_VAR)
329 #ifdef CONFIG_PREBOOT
330 if ((p = getenv ("preboot")) != NULL) {
331 # ifdef CONFIG_AUTOBOOT_KEYED
332 int prev = disable_ctrlc(1); /* disable Control C checking */
335 # ifndef CONFIG_SYS_HUSH_PARSER
338 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
339 FLAG_EXIT_FROM_LOOP);
342 # ifdef CONFIG_AUTOBOOT_KEYED
343 disable_ctrlc(prev); /* restore Control C checking */
346 #endif /* CONFIG_PREBOOT */
348 #if defined(CONFIG_UPDATE_TFTP)
350 #endif /* CONFIG_UPDATE_TFTP */
352 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
353 s = getenv ("bootdelay");
354 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
356 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
358 # ifdef CONFIG_BOOT_RETRY_TIME
360 # endif /* CONFIG_BOOT_RETRY_TIME */
363 if (gd->flags & GD_FLG_POSTFAIL) {
364 s = getenv("failbootcmd");
367 #endif /* CONFIG_POST */
368 #ifdef CONFIG_BOOTCOUNT_LIMIT
369 if (bootlimit && (bootcount > bootlimit)) {
370 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
371 (unsigned)bootlimit);
372 s = getenv ("altbootcmd");
375 #endif /* CONFIG_BOOTCOUNT_LIMIT */
376 s = getenv ("bootcmd");
378 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
380 if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
381 # ifdef CONFIG_AUTOBOOT_KEYED
382 int prev = disable_ctrlc(1); /* disable Control C checking */
385 # ifndef CONFIG_SYS_HUSH_PARSER
388 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
389 FLAG_EXIT_FROM_LOOP);
392 # ifdef CONFIG_AUTOBOOT_KEYED
393 disable_ctrlc(prev); /* restore Control C checking */
397 # ifdef CONFIG_MENUKEY
398 if (menukey == CONFIG_MENUKEY) {
399 s = getenv("menucmd");
401 # ifndef CONFIG_SYS_HUSH_PARSER
404 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
405 FLAG_EXIT_FROM_LOOP);
409 #endif /* CONFIG_MENUKEY */
410 #endif /* CONFIG_BOOTDELAY */
413 * Main Loop for Monitor Command Processing
415 #ifdef CONFIG_SYS_HUSH_PARSER
417 /* This point is never reached */
421 #ifdef CONFIG_BOOT_RETRY_TIME
423 /* Saw enough of a valid command to
424 * restart the timeout.
429 len = readline (CONFIG_SYS_PROMPT);
431 flag = 0; /* assume no special flags for now */
433 strcpy (lastcommand, console_buffer);
435 flag |= CMD_FLAG_REPEAT;
436 #ifdef CONFIG_BOOT_RETRY_TIME
437 else if (len == -2) {
438 /* -2 means timed out, retry autoboot
440 puts ("\nTimed out waiting for command\n");
441 # ifdef CONFIG_RESET_TO_RETRY
442 /* Reinit board to run initialization code again */
443 do_reset (NULL, 0, 0, NULL);
445 return; /* retry autoboot */
451 puts ("<INTERRUPT>\n");
453 rc = run_command (lastcommand, flag);
456 /* invalid command or not repeatable, forget it */
460 #endif /*CONFIG_SYS_HUSH_PARSER*/
463 #ifdef CONFIG_BOOT_RETRY_TIME
464 /***************************************************************************
465 * initialize command line timeout
467 void init_cmd_timeout(void)
469 char *s = getenv ("bootretry");
472 retry_time = (int)simple_strtol(s, NULL, 10);
474 retry_time = CONFIG_BOOT_RETRY_TIME;
476 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
477 retry_time = CONFIG_BOOT_RETRY_MIN;
480 /***************************************************************************
481 * reset command line timeout to retry_time seconds
483 void reset_cmd_timeout(void)
485 endtime = endtick(retry_time);
489 #ifdef CONFIG_CMDLINE_EDITING
492 * cmdline-editing related codes from vivi.
493 * Author: Janghoon Lyu <nandy@mizi.com>
496 #define putnstr(str,n) do { \
497 printf ("%.*s", (int)n, str); \
500 #define CTL_CH(c) ((c) - 'a' + 1)
501 #define CTL_BACKSPACE ('\b')
502 #define DEL ((char)255)
503 #define DEL7 ((char)127)
504 #define CREAD_HIST_CHAR ('!')
506 #define getcmd_putch(ch) putc(ch)
507 #define getcmd_getch() getc()
508 #define getcmd_cbeep() getcmd_putch('\a')
511 #define HIST_SIZE CONFIG_SYS_CBSIZE
513 static int hist_max = 0;
514 static int hist_add_idx = 0;
515 static int hist_cur = -1;
516 unsigned hist_num = 0;
518 char* hist_list[HIST_MAX];
519 char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */
521 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
523 static void hist_init(void)
532 for (i = 0; i < HIST_MAX; i++) {
533 hist_list[i] = hist_lines[i];
534 hist_list[i][0] = '\0';
538 static void cread_add_to_hist(char *line)
540 strcpy(hist_list[hist_add_idx], line);
542 if (++hist_add_idx >= HIST_MAX)
545 if (hist_add_idx > hist_max)
546 hist_max = hist_add_idx;
551 static char* hist_prev(void)
563 if (hist_cur == hist_add_idx) {
567 ret = hist_list[hist_cur];
572 static char* hist_next(void)
579 if (hist_cur == hist_add_idx)
582 if (++hist_cur > hist_max)
585 if (hist_cur == hist_add_idx) {
588 ret = hist_list[hist_cur];
593 #ifndef CONFIG_CMDLINE_EDITING
594 static void cread_print_hist_list(void)
599 n = hist_num - hist_max;
601 i = hist_add_idx + 1;
605 if (i == hist_add_idx)
607 printf("%s\n", hist_list[i]);
612 #endif /* CONFIG_CMDLINE_EDITING */
614 #define BEGINNING_OF_LINE() { \
616 getcmd_putch(CTL_BACKSPACE); \
621 #define ERASE_TO_EOL() { \
622 if (num < eol_num) { \
623 printf("%*s", (int)(eol_num - num), ""); \
625 getcmd_putch(CTL_BACKSPACE); \
626 } while (--eol_num > num); \
630 #define REFRESH_TO_EOL() { \
631 if (num < eol_num) { \
632 wlen = eol_num - num; \
633 putnstr(buf + num, wlen); \
638 static void cread_add_char(char ichar, int insert, unsigned long *num,
639 unsigned long *eol_num, char *buf, unsigned long len)
644 if (insert || *num == *eol_num) {
645 if (*eol_num > len - 1) {
653 wlen = *eol_num - *num;
655 memmove(&buf[*num+1], &buf[*num], wlen-1);
659 putnstr(buf + *num, wlen);
662 getcmd_putch(CTL_BACKSPACE);
665 /* echo the character */
668 putnstr(buf + *num, wlen);
673 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
674 unsigned long *eol_num, char *buf, unsigned long len)
677 cread_add_char(*str, insert, num, eol_num, buf, len);
682 static int cread_line(const char *const prompt, char *buf, unsigned int *len)
684 unsigned long num = 0;
685 unsigned long eol_num = 0;
691 int init_len = strlen(buf);
694 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
697 #ifdef CONFIG_BOOT_RETRY_TIME
698 while (!tstc()) { /* while no incoming data */
699 if (retry_time >= 0 && get_ticks() > endtime)
700 return (-2); /* timed out */
705 ichar = getcmd_getch();
707 if ((ichar == '\n') || (ichar == '\r')) {
713 * handle standard linux xterm esc sequences for arrow key, etc.
718 esc_save[esc_len] = ichar;
721 cread_add_str(esc_save, esc_len, insert,
722 &num, &eol_num, buf, *len);
730 case 'D': /* <- key */
734 case 'C': /* -> key */
737 break; /* pass off to ^F handler */
738 case 'H': /* Home key */
741 break; /* pass off to ^A handler */
742 case 'A': /* up arrow */
745 break; /* pass off to ^P handler */
746 case 'B': /* down arrow */
749 break; /* pass off to ^N handler */
751 esc_save[esc_len++] = ichar;
752 cread_add_str(esc_save, esc_len, insert,
753 &num, &eol_num, buf, *len);
762 esc_save[esc_len] = ichar;
765 puts("impossible condition #876\n");
773 case CTL_CH('c'): /* ^C - break */
774 *buf = '\0'; /* discard input */
778 getcmd_putch(buf[num]);
784 getcmd_putch(CTL_BACKSPACE);
790 wlen = eol_num - num - 1;
792 memmove(&buf[num], &buf[num+1], wlen);
793 putnstr(buf + num, wlen);
798 getcmd_putch(CTL_BACKSPACE);
821 wlen = eol_num - num;
823 memmove(&buf[num], &buf[num+1], wlen);
824 getcmd_putch(CTL_BACKSPACE);
825 putnstr(buf + num, wlen);
828 getcmd_putch(CTL_BACKSPACE);
840 if (ichar == CTL_CH('p'))
850 /* nuke the current line */
854 /* erase to end of line */
857 /* copy new line into place and display */
859 eol_num = strlen(buf);
863 #ifdef CONFIG_AUTO_COMPLETE
867 /* do not autocomplete when in the middle */
874 col = strlen(prompt) + eol_num;
876 if (cmd_auto_complete(prompt, buf, &num2, &col)) {
885 cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
890 buf[eol_num] = '\0'; /* lose the newline */
892 if (buf[0] && buf[0] != CREAD_HIST_CHAR)
893 cread_add_to_hist(buf);
894 hist_cur = hist_add_idx;
899 #endif /* CONFIG_CMDLINE_EDITING */
901 /****************************************************************************/
904 * Prompt for input and read a line.
905 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
906 * time out when time goes past endtime (timebase time in ticks).
907 * Return: number of read characters
911 int readline (const char *const prompt)
914 * If console_buffer isn't 0-length the user will be prompted to modify
915 * it instead of entering it from scratch as desired.
917 console_buffer[0] = '\0';
919 return readline_into_buffer(prompt, console_buffer);
923 int readline_into_buffer (const char *const prompt, char * buffer)
926 #ifdef CONFIG_CMDLINE_EDITING
927 unsigned int len = CONFIG_SYS_CBSIZE;
929 static int initted = 0;
932 * History uses a global array which is not
933 * writable until after relocation to RAM.
934 * Revert to non-history version if still
935 * running from flash.
937 if (gd->flags & GD_FLG_RELOC) {
946 rc = cread_line(prompt, p, &len);
947 return rc < 0 ? rc : len;
950 #endif /* CONFIG_CMDLINE_EDITING */
952 int n = 0; /* buffer index */
953 int plen = 0; /* prompt length */
954 int col; /* output column cnt */
959 plen = strlen (prompt);
965 #ifdef CONFIG_BOOT_RETRY_TIME
966 while (!tstc()) { /* while no incoming data */
967 if (retry_time >= 0 && get_ticks() > endtime)
968 return (-2); /* timed out */
972 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
974 #ifdef CONFIG_SHOW_ACTIVITY
976 extern void show_activity(int arg);
984 * Special character handling
987 case '\r': /* Enter */
996 case 0x03: /* ^C - break */
997 p_buf[0] = '\0'; /* discard input */
1000 case 0x15: /* ^U - erase line */
1001 while (col > plen) {
1009 case 0x17: /* ^W - erase word */
1010 p=delete_char(p_buf, p, &col, &n, plen);
1011 while ((n > 0) && (*p != ' ')) {
1012 p=delete_char(p_buf, p, &col, &n, plen);
1016 case 0x08: /* ^H - backspace */
1017 case 0x7F: /* DEL - backspace */
1018 p=delete_char(p_buf, p, &col, &n, plen);
1023 * Must be a normal character then
1025 if (n < CONFIG_SYS_CBSIZE-2) {
1026 if (c == '\t') { /* expand TABs */
1027 #ifdef CONFIG_AUTO_COMPLETE
1028 /* if auto completion triggered just continue */
1030 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
1031 p = p_buf + n; /* reset */
1035 puts (tab_seq+(col&07));
1036 col += 8 - (col&07);
1038 ++col; /* echo input */
1043 } else { /* Buffer full */
1048 #ifdef CONFIG_CMDLINE_EDITING
1053 /****************************************************************************/
1055 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1063 if (*(--p) == '\t') { /* will retype the whole line */
1064 while (*colp > plen) {
1068 for (s=buffer; s<p; ++s) {
1070 puts (tab_seq+((*colp) & 07));
1071 *colp += 8 - ((*colp) & 07);
1085 /****************************************************************************/
1087 int parse_line (char *line, char *argv[])
1092 printf ("parse_line: \"%s\"\n", line);
1094 while (nargs < CONFIG_SYS_MAXARGS) {
1096 /* skip any white space */
1097 while ((*line == ' ') || (*line == '\t')) {
1101 if (*line == '\0') { /* end of line, no more args */
1104 printf ("parse_line: nargs=%d\n", nargs);
1109 argv[nargs++] = line; /* begin of argument string */
1111 /* find end of string */
1112 while (*line && (*line != ' ') && (*line != '\t')) {
1116 if (*line == '\0') { /* end of line, no more args */
1119 printf ("parse_line: nargs=%d\n", nargs);
1124 *line++ = '\0'; /* terminate current arg */
1127 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
1130 printf ("parse_line: nargs=%d\n", nargs);
1135 /****************************************************************************/
1137 static void process_macros (const char *input, char *output)
1140 const char *varname_start = NULL;
1141 int inputcnt = strlen (input);
1142 int outputcnt = CONFIG_SYS_CBSIZE;
1143 int state = 0; /* 0 = waiting for '$' */
1145 /* 1 = waiting for '(' or '{' */
1146 /* 2 = waiting for ')' or '}' */
1147 /* 3 = waiting for ''' */
1149 char *output_start = output;
1151 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1155 prev = '\0'; /* previous character */
1157 while (inputcnt && outputcnt) {
1162 /* remove one level of escape characters */
1163 if ((c == '\\') && (prev != '\\')) {
1164 if (inputcnt-- == 0)
1172 case 0: /* Waiting for (unescaped) $ */
1173 if ((c == '\'') && (prev != '\\')) {
1177 if ((c == '$') && (prev != '\\')) {
1184 case 1: /* Waiting for ( */
1185 if (c == '(' || c == '{') {
1187 varname_start = input;
1199 case 2: /* Waiting for ) */
1200 if (c == ')' || c == '}') {
1202 char envname[CONFIG_SYS_CBSIZE], *envval;
1203 int envcnt = input - varname_start - 1; /* Varname # of chars */
1205 /* Get the varname */
1206 for (i = 0; i < envcnt; i++) {
1207 envname[i] = varname_start[i];
1212 envval = getenv (envname);
1214 /* Copy into the line if it exists */
1216 while ((*envval) && outputcnt) {
1217 *(output++) = *(envval++);
1220 /* Look for another '$' */
1224 case 3: /* Waiting for ' */
1225 if ((c == '\'') && (prev != '\\')) {
1242 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1243 strlen (output_start), output_start);
1247 /****************************************************************************
1249 * 1 - command executed, repeatable
1250 * 0 - command executed but not repeatable, interrupted commands are
1251 * always considered not repeatable
1252 * -1 - not executed (unrecognized, bootd recursion or too many args)
1253 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1254 * considered unrecognized)
1258 * We must create a temporary copy of the command since the command we get
1259 * may be the result from getenv(), which returns a pointer directly to
1260 * the environment data, which may change magicly when the command we run
1261 * creates or modifies environment variables (like "bootp" does).
1264 int run_command (const char *cmd, int flag)
1267 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */
1268 char *token; /* start of token in cmdbuf */
1269 char *sep; /* end of token (separator) in cmdbuf */
1270 char finaltoken[CONFIG_SYS_CBSIZE];
1272 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
1278 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1279 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
1283 clear_ctrlc(); /* forget any previous Control C */
1285 if (!cmd || !*cmd) {
1286 return -1; /* empty command */
1289 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
1290 puts ("## Command too long!\n");
1294 strcpy (cmdbuf, cmd);
1296 /* Process separators and check for invalid
1297 * repeatable commands
1301 printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1306 * Find separator, or string end
1307 * Allow simple escape of ';' by writing "\;"
1309 for (inquotes = 0, sep = str; *sep; sep++) {
1315 (*sep == ';') && /* separator */
1316 ( sep != str) && /* past string start */
1317 (*(sep-1) != '\\')) /* and NOT escaped */
1322 * Limit the token to data between separators
1326 str = sep + 1; /* start of command for next pass */
1330 str = sep; /* no more commands for next pass */
1332 printf ("token: \"%s\"\n", token);
1335 /* find macros in this token and replace them */
1336 process_macros (token, finaltoken);
1338 /* Extract arguments */
1339 if ((argc = parse_line (finaltoken, argv)) == 0) {
1340 rc = -1; /* no command at all */
1344 /* Look up command in command table */
1345 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1346 printf ("Unknown command '%s' - try 'help'\n", argv[0]);
1347 rc = -1; /* give up after bad command */
1351 /* found - check max args */
1352 if (argc > cmdtp->maxargs) {
1358 #if defined(CONFIG_CMD_BOOTD)
1359 /* avoid "bootd" recursion */
1360 if (cmdtp->cmd == do_bootd) {
1362 printf ("[%s]\n", finaltoken);
1364 if (flag & CMD_FLAG_BOOTD) {
1365 puts ("'bootd' recursion detected\n");
1369 flag |= CMD_FLAG_BOOTD;
1374 /* OK - call function to do the command */
1375 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
1379 repeatable &= cmdtp->repeatable;
1381 /* Did the user stop this? */
1383 return -1; /* if stopped then not repeatable */
1386 return rc ? rc : repeatable;
1389 /****************************************************************************/
1391 #if defined(CONFIG_CMD_RUN)
1392 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
1397 return cmd_usage(cmdtp);
1399 for (i=1; i<argc; ++i) {
1402 if ((arg = getenv (argv[i])) == NULL) {
1403 printf ("## Error: \"%s\" not defined\n", argv[i]);
1406 #ifndef CONFIG_SYS_HUSH_PARSER
1407 if (run_command (arg, flag) == -1)
1410 if (parse_string_outer(arg,
1411 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)