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
43 #include <linux/ctype.h>
45 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
46 DECLARE_GLOBAL_DATA_PTR;
50 * Board-specific Platform code can reimplement show_boot_progress () if needed
52 void inline __show_boot_progress (int val) {}
53 void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress")));
55 #if defined(CONFIG_UPDATE_TFTP)
56 int update_tftp (ulong addr);
57 #endif /* CONFIG_UPDATE_TFTP */
59 #define MAX_DELAY_STOP_STR 32
63 char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */
65 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
66 static const char erase_seq[] = "\b \b"; /* erase sequence */
67 static const char tab_seq[] = " "; /* used to expand TABs */
69 #ifdef CONFIG_BOOT_RETRY_TIME
70 static uint64_t endtime = 0; /* must be set, default is instant timeout */
71 static int retry_time = -1; /* -1 so can call readline before main_loop */
74 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
76 #ifndef CONFIG_BOOT_RETRY_MIN
77 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
80 #ifdef CONFIG_MODEM_SUPPORT
82 extern void mdm_init(void); /* defined in board.c */
85 /***************************************************************************
86 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
87 * returns: 0 - no key string, allow autoboot 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 */
270 * Return 0 on success, or != 0 on error.
272 #ifndef CONFIG_CMD_PXE
275 int run_command2(const char *cmd, int flag)
277 #ifndef CONFIG_SYS_HUSH_PARSER
279 * run_command can return 0 or 1 for success, so clean up its result.
281 if (run_command(cmd, flag) == -1)
286 return parse_string_outer(cmd,
287 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP);
291 /****************************************************************************/
293 void main_loop (void)
295 #ifndef CONFIG_SYS_HUSH_PARSER
296 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, };
302 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
306 #ifdef CONFIG_PREBOOT
309 #ifdef CONFIG_BOOTCOUNT_LIMIT
310 unsigned long bootcount = 0;
311 unsigned long bootlimit = 0;
314 #endif /* CONFIG_BOOTCOUNT_LIMIT */
316 #ifdef CONFIG_BOOTCOUNT_LIMIT
317 bootcount = bootcount_load();
319 bootcount_store (bootcount);
320 sprintf (bcs_set, "%lu", bootcount);
321 setenv ("bootcount", bcs_set);
322 bcs = getenv ("bootlimit");
323 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
324 #endif /* CONFIG_BOOTCOUNT_LIMIT */
326 #ifdef CONFIG_MODEM_SUPPORT
327 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init);
329 char *str = strdup(getenv("mdm_cmd"));
330 setenv ("preboot", str); /* set or delete definition */
333 mdm_init(); /* wait for modem connection */
335 #endif /* CONFIG_MODEM_SUPPORT */
337 #ifdef CONFIG_VERSION_VARIABLE
339 setenv ("ver", version_string); /* set version variable */
341 #endif /* CONFIG_VERSION_VARIABLE */
343 #ifdef CONFIG_SYS_HUSH_PARSER
344 u_boot_hush_start ();
347 #if defined(CONFIG_HUSH_INIT_VAR)
351 #ifdef CONFIG_PREBOOT
352 if ((p = getenv ("preboot")) != NULL) {
353 # ifdef CONFIG_AUTOBOOT_KEYED
354 int prev = disable_ctrlc(1); /* disable Control C checking */
359 # ifdef CONFIG_AUTOBOOT_KEYED
360 disable_ctrlc(prev); /* restore Control C checking */
363 #endif /* CONFIG_PREBOOT */
365 #if defined(CONFIG_UPDATE_TFTP)
367 #endif /* CONFIG_UPDATE_TFTP */
369 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
370 s = getenv ("bootdelay");
371 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
373 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
375 # ifdef CONFIG_BOOT_RETRY_TIME
377 # endif /* CONFIG_BOOT_RETRY_TIME */
380 if (gd->flags & GD_FLG_POSTFAIL) {
381 s = getenv("failbootcmd");
384 #endif /* CONFIG_POST */
385 #ifdef CONFIG_BOOTCOUNT_LIMIT
386 if (bootlimit && (bootcount > bootlimit)) {
387 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
388 (unsigned)bootlimit);
389 s = getenv ("altbootcmd");
392 #endif /* CONFIG_BOOTCOUNT_LIMIT */
393 s = getenv ("bootcmd");
395 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
397 if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
398 # ifdef CONFIG_AUTOBOOT_KEYED
399 int prev = disable_ctrlc(1); /* disable Control C checking */
404 # ifdef CONFIG_AUTOBOOT_KEYED
405 disable_ctrlc(prev); /* restore Control C checking */
409 # ifdef CONFIG_MENUKEY
410 if (menukey == CONFIG_MENUKEY) {
411 s = getenv("menucmd");
415 #endif /* CONFIG_MENUKEY */
416 #endif /* CONFIG_BOOTDELAY */
419 * Main Loop for Monitor Command Processing
421 #ifdef CONFIG_SYS_HUSH_PARSER
423 /* This point is never reached */
427 #ifdef CONFIG_BOOT_RETRY_TIME
429 /* Saw enough of a valid command to
430 * restart the timeout.
435 len = readline (CONFIG_SYS_PROMPT);
437 flag = 0; /* assume no special flags for now */
439 strcpy (lastcommand, console_buffer);
441 flag |= CMD_FLAG_REPEAT;
442 #ifdef CONFIG_BOOT_RETRY_TIME
443 else if (len == -2) {
444 /* -2 means timed out, retry autoboot
446 puts ("\nTimed out waiting for command\n");
447 # ifdef CONFIG_RESET_TO_RETRY
448 /* Reinit board to run initialization code again */
449 do_reset (NULL, 0, 0, NULL);
451 return; /* retry autoboot */
457 puts ("<INTERRUPT>\n");
459 rc = run_command (lastcommand, flag);
462 /* invalid command or not repeatable, forget it */
466 #endif /*CONFIG_SYS_HUSH_PARSER*/
469 #ifdef CONFIG_BOOT_RETRY_TIME
470 /***************************************************************************
471 * initialize command line timeout
473 void init_cmd_timeout(void)
475 char *s = getenv ("bootretry");
478 retry_time = (int)simple_strtol(s, NULL, 10);
480 retry_time = CONFIG_BOOT_RETRY_TIME;
482 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
483 retry_time = CONFIG_BOOT_RETRY_MIN;
486 /***************************************************************************
487 * reset command line timeout to retry_time seconds
489 void reset_cmd_timeout(void)
491 endtime = endtick(retry_time);
495 #ifdef CONFIG_CMDLINE_EDITING
498 * cmdline-editing related codes from vivi.
499 * Author: Janghoon Lyu <nandy@mizi.com>
502 #define putnstr(str,n) do { \
503 printf ("%.*s", (int)n, str); \
506 #define CTL_CH(c) ((c) - 'a' + 1)
507 #define CTL_BACKSPACE ('\b')
508 #define DEL ((char)255)
509 #define DEL7 ((char)127)
510 #define CREAD_HIST_CHAR ('!')
512 #define getcmd_putch(ch) putc(ch)
513 #define getcmd_getch() getc()
514 #define getcmd_cbeep() getcmd_putch('\a')
517 #define HIST_SIZE CONFIG_SYS_CBSIZE
519 static int hist_max = 0;
520 static int hist_add_idx = 0;
521 static int hist_cur = -1;
522 unsigned hist_num = 0;
524 char* hist_list[HIST_MAX];
525 char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */
527 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
529 static void hist_init(void)
538 for (i = 0; i < HIST_MAX; i++) {
539 hist_list[i] = hist_lines[i];
540 hist_list[i][0] = '\0';
544 static void cread_add_to_hist(char *line)
546 strcpy(hist_list[hist_add_idx], line);
548 if (++hist_add_idx >= HIST_MAX)
551 if (hist_add_idx > hist_max)
552 hist_max = hist_add_idx;
557 static char* hist_prev(void)
569 if (hist_cur == hist_add_idx) {
573 ret = hist_list[hist_cur];
578 static char* hist_next(void)
585 if (hist_cur == hist_add_idx)
588 if (++hist_cur > hist_max)
591 if (hist_cur == hist_add_idx) {
594 ret = hist_list[hist_cur];
599 #ifndef CONFIG_CMDLINE_EDITING
600 static void cread_print_hist_list(void)
605 n = hist_num - hist_max;
607 i = hist_add_idx + 1;
611 if (i == hist_add_idx)
613 printf("%s\n", hist_list[i]);
618 #endif /* CONFIG_CMDLINE_EDITING */
620 #define BEGINNING_OF_LINE() { \
622 getcmd_putch(CTL_BACKSPACE); \
627 #define ERASE_TO_EOL() { \
628 if (num < eol_num) { \
629 printf("%*s", (int)(eol_num - num), ""); \
631 getcmd_putch(CTL_BACKSPACE); \
632 } while (--eol_num > num); \
636 #define REFRESH_TO_EOL() { \
637 if (num < eol_num) { \
638 wlen = eol_num - num; \
639 putnstr(buf + num, wlen); \
644 static void cread_add_char(char ichar, int insert, unsigned long *num,
645 unsigned long *eol_num, char *buf, unsigned long len)
650 if (insert || *num == *eol_num) {
651 if (*eol_num > len - 1) {
659 wlen = *eol_num - *num;
661 memmove(&buf[*num+1], &buf[*num], wlen-1);
665 putnstr(buf + *num, wlen);
668 getcmd_putch(CTL_BACKSPACE);
671 /* echo the character */
674 putnstr(buf + *num, wlen);
679 static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
680 unsigned long *eol_num, char *buf, unsigned long len)
683 cread_add_char(*str, insert, num, eol_num, buf, len);
688 static int cread_line(const char *const prompt, char *buf, unsigned int *len,
691 unsigned long num = 0;
692 unsigned long eol_num = 0;
698 int init_len = strlen(buf);
702 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
705 #ifdef CONFIG_BOOT_RETRY_TIME
706 while (!tstc()) { /* while no incoming data */
707 if (retry_time >= 0 && get_ticks() > endtime)
708 return (-2); /* timed out */
712 if (first && timeout) {
713 uint64_t etime = endtick(timeout);
715 while (!tstc()) { /* while no incoming data */
716 if (get_ticks() >= etime)
717 return -2; /* timed out */
723 ichar = getcmd_getch();
725 if ((ichar == '\n') || (ichar == '\r')) {
731 * handle standard linux xterm esc sequences for arrow key, etc.
736 esc_save[esc_len] = ichar;
739 cread_add_str(esc_save, esc_len, insert,
740 &num, &eol_num, buf, *len);
748 case 'D': /* <- key */
752 case 'C': /* -> key */
755 break; /* pass off to ^F handler */
756 case 'H': /* Home key */
759 break; /* pass off to ^A handler */
760 case 'A': /* up arrow */
763 break; /* pass off to ^P handler */
764 case 'B': /* down arrow */
767 break; /* pass off to ^N handler */
769 esc_save[esc_len++] = ichar;
770 cread_add_str(esc_save, esc_len, insert,
771 &num, &eol_num, buf, *len);
780 esc_save[esc_len] = ichar;
783 puts("impossible condition #876\n");
791 case CTL_CH('c'): /* ^C - break */
792 *buf = '\0'; /* discard input */
796 getcmd_putch(buf[num]);
802 getcmd_putch(CTL_BACKSPACE);
808 wlen = eol_num - num - 1;
810 memmove(&buf[num], &buf[num+1], wlen);
811 putnstr(buf + num, wlen);
816 getcmd_putch(CTL_BACKSPACE);
839 wlen = eol_num - num;
841 memmove(&buf[num], &buf[num+1], wlen);
842 getcmd_putch(CTL_BACKSPACE);
843 putnstr(buf + num, wlen);
846 getcmd_putch(CTL_BACKSPACE);
858 if (ichar == CTL_CH('p'))
868 /* nuke the current line */
872 /* erase to end of line */
875 /* copy new line into place and display */
877 eol_num = strlen(buf);
881 #ifdef CONFIG_AUTO_COMPLETE
885 /* do not autocomplete when in the middle */
892 col = strlen(prompt) + eol_num;
894 if (cmd_auto_complete(prompt, buf, &num2, &col)) {
903 cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
908 buf[eol_num] = '\0'; /* lose the newline */
910 if (buf[0] && buf[0] != CREAD_HIST_CHAR)
911 cread_add_to_hist(buf);
912 hist_cur = hist_add_idx;
917 #endif /* CONFIG_CMDLINE_EDITING */
919 /****************************************************************************/
922 * Prompt for input and read a line.
923 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
924 * time out when time goes past endtime (timebase time in ticks).
925 * Return: number of read characters
929 int readline (const char *const prompt)
932 * If console_buffer isn't 0-length the user will be prompted to modify
933 * it instead of entering it from scratch as desired.
935 console_buffer[0] = '\0';
937 return readline_into_buffer(prompt, console_buffer, 0);
941 int readline_into_buffer(const char *const prompt, char *buffer, int timeout)
944 #ifdef CONFIG_CMDLINE_EDITING
945 unsigned int len = CONFIG_SYS_CBSIZE;
947 static int initted = 0;
950 * History uses a global array which is not
951 * writable until after relocation to RAM.
952 * Revert to non-history version if still
953 * running from flash.
955 if (gd->flags & GD_FLG_RELOC) {
964 rc = cread_line(prompt, p, &len, timeout);
965 return rc < 0 ? rc : len;
968 #endif /* CONFIG_CMDLINE_EDITING */
970 int n = 0; /* buffer index */
971 int plen = 0; /* prompt length */
972 int col; /* output column cnt */
977 plen = strlen (prompt);
983 #ifdef CONFIG_BOOT_RETRY_TIME
984 while (!tstc()) { /* while no incoming data */
985 if (retry_time >= 0 && get_ticks() > endtime)
986 return (-2); /* timed out */
990 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
992 #ifdef CONFIG_SHOW_ACTIVITY
994 extern void show_activity(int arg);
1002 * Special character handling
1005 case '\r': /* Enter */
1011 case '\0': /* nul */
1014 case 0x03: /* ^C - break */
1015 p_buf[0] = '\0'; /* discard input */
1018 case 0x15: /* ^U - erase line */
1019 while (col > plen) {
1027 case 0x17: /* ^W - erase word */
1028 p=delete_char(p_buf, p, &col, &n, plen);
1029 while ((n > 0) && (*p != ' ')) {
1030 p=delete_char(p_buf, p, &col, &n, plen);
1034 case 0x08: /* ^H - backspace */
1035 case 0x7F: /* DEL - backspace */
1036 p=delete_char(p_buf, p, &col, &n, plen);
1041 * Must be a normal character then
1043 if (n < CONFIG_SYS_CBSIZE-2) {
1044 if (c == '\t') { /* expand TABs */
1045 #ifdef CONFIG_AUTO_COMPLETE
1046 /* if auto completion triggered just continue */
1048 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
1049 p = p_buf + n; /* reset */
1053 puts (tab_seq+(col&07));
1054 col += 8 - (col&07);
1056 ++col; /* echo input */
1061 } else { /* Buffer full */
1066 #ifdef CONFIG_CMDLINE_EDITING
1071 /****************************************************************************/
1073 static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1081 if (*(--p) == '\t') { /* will retype the whole line */
1082 while (*colp > plen) {
1086 for (s=buffer; s<p; ++s) {
1088 puts (tab_seq+((*colp) & 07));
1089 *colp += 8 - ((*colp) & 07);
1103 /****************************************************************************/
1105 int parse_line (char *line, char *argv[])
1110 printf ("parse_line: \"%s\"\n", line);
1112 while (nargs < CONFIG_SYS_MAXARGS) {
1114 /* skip any white space */
1115 while (isblank(*line))
1118 if (*line == '\0') { /* end of line, no more args */
1121 printf ("parse_line: nargs=%d\n", nargs);
1126 argv[nargs++] = line; /* begin of argument string */
1128 /* find end of string */
1129 while (*line && !isblank(*line))
1132 if (*line == '\0') { /* end of line, no more args */
1135 printf ("parse_line: nargs=%d\n", nargs);
1140 *line++ = '\0'; /* terminate current arg */
1143 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
1146 printf ("parse_line: nargs=%d\n", nargs);
1151 /****************************************************************************/
1153 static void process_macros (const char *input, char *output)
1156 const char *varname_start = NULL;
1157 int inputcnt = strlen (input);
1158 int outputcnt = CONFIG_SYS_CBSIZE;
1159 int state = 0; /* 0 = waiting for '$' */
1161 /* 1 = waiting for '(' or '{' */
1162 /* 2 = waiting for ')' or '}' */
1163 /* 3 = waiting for ''' */
1165 char *output_start = output;
1167 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1171 prev = '\0'; /* previous character */
1173 while (inputcnt && outputcnt) {
1178 /* remove one level of escape characters */
1179 if ((c == '\\') && (prev != '\\')) {
1180 if (inputcnt-- == 0)
1188 case 0: /* Waiting for (unescaped) $ */
1189 if ((c == '\'') && (prev != '\\')) {
1193 if ((c == '$') && (prev != '\\')) {
1200 case 1: /* Waiting for ( */
1201 if (c == '(' || c == '{') {
1203 varname_start = input;
1215 case 2: /* Waiting for ) */
1216 if (c == ')' || c == '}') {
1218 char envname[CONFIG_SYS_CBSIZE], *envval;
1219 int envcnt = input - varname_start - 1; /* Varname # of chars */
1221 /* Get the varname */
1222 for (i = 0; i < envcnt; i++) {
1223 envname[i] = varname_start[i];
1228 envval = getenv (envname);
1230 /* Copy into the line if it exists */
1232 while ((*envval) && outputcnt) {
1233 *(output++) = *(envval++);
1236 /* Look for another '$' */
1240 case 3: /* Waiting for ' */
1241 if ((c == '\'') && (prev != '\\')) {
1258 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1259 strlen (output_start), output_start);
1263 /****************************************************************************
1265 * 1 - command executed, repeatable
1266 * 0 - command executed but not repeatable, interrupted commands are
1267 * always considered not repeatable
1268 * -1 - not executed (unrecognized, bootd recursion or too many args)
1269 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1270 * considered unrecognized)
1274 * We must create a temporary copy of the command since the command we get
1275 * may be the result from getenv(), which returns a pointer directly to
1276 * the environment data, which may change magicly when the command we run
1277 * creates or modifies environment variables (like "bootp" does).
1280 int run_command (const char *cmd, int flag)
1283 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */
1284 char *token; /* start of token in cmdbuf */
1285 char *sep; /* end of token (separator) in cmdbuf */
1286 char finaltoken[CONFIG_SYS_CBSIZE];
1288 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
1294 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1295 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
1299 clear_ctrlc(); /* forget any previous Control C */
1301 if (!cmd || !*cmd) {
1302 return -1; /* empty command */
1305 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
1306 puts ("## Command too long!\n");
1310 strcpy (cmdbuf, cmd);
1312 /* Process separators and check for invalid
1313 * repeatable commands
1317 printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1322 * Find separator, or string end
1323 * Allow simple escape of ';' by writing "\;"
1325 for (inquotes = 0, sep = str; *sep; sep++) {
1331 (*sep == ';') && /* separator */
1332 ( sep != str) && /* past string start */
1333 (*(sep-1) != '\\')) /* and NOT escaped */
1338 * Limit the token to data between separators
1342 str = sep + 1; /* start of command for next pass */
1346 str = sep; /* no more commands for next pass */
1348 printf ("token: \"%s\"\n", token);
1351 /* find macros in this token and replace them */
1352 process_macros (token, finaltoken);
1354 /* Extract arguments */
1355 if ((argc = parse_line (finaltoken, argv)) == 0) {
1356 rc = -1; /* no command at all */
1360 /* Look up command in command table */
1361 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1362 printf ("Unknown command '%s' - try 'help'\n", argv[0]);
1363 rc = -1; /* give up after bad command */
1367 /* found - check max args */
1368 if (argc > cmdtp->maxargs) {
1374 #if defined(CONFIG_CMD_BOOTD)
1375 /* avoid "bootd" recursion */
1376 if (cmdtp->cmd == do_bootd) {
1378 printf ("[%s]\n", finaltoken);
1380 if (flag & CMD_FLAG_BOOTD) {
1381 puts ("'bootd' recursion detected\n");
1385 flag |= CMD_FLAG_BOOTD;
1390 /* OK - call function to do the command */
1391 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
1395 repeatable &= cmdtp->repeatable;
1397 /* Did the user stop this? */
1399 return -1; /* if stopped then not repeatable */
1402 return rc ? rc : repeatable;
1405 /****************************************************************************/
1407 #if defined(CONFIG_CMD_RUN)
1408 int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
1413 return cmd_usage(cmdtp);
1415 for (i=1; i<argc; ++i) {
1418 if ((arg = getenv (argv[i])) == NULL) {
1419 printf ("## Error: \"%s\" not defined\n", argv[i]);
1423 if (run_command2(arg, flag) != 0)