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>
46 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
47 DECLARE_GLOBAL_DATA_PTR
;
51 * Board-specific Platform code can reimplement show_boot_progress () if needed
53 void inline __show_boot_progress (int val
) {}
54 void show_boot_progress (int val
) __attribute__((weak
, alias("__show_boot_progress")));
56 #if defined(CONFIG_UPDATE_TFTP)
57 int update_tftp (ulong addr
);
58 #endif /* CONFIG_UPDATE_TFTP */
60 #define MAX_DELAY_STOP_STR 32
64 char console_buffer
[CONFIG_SYS_CBSIZE
+ 1]; /* console I/O buffer */
66 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
67 static const char erase_seq
[] = "\b \b"; /* erase sequence */
68 static const char tab_seq
[] = " "; /* used to expand TABs */
70 #ifdef CONFIG_BOOT_RETRY_TIME
71 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
72 static int retry_time
= -1; /* -1 so can call readline before main_loop */
75 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
77 #ifndef CONFIG_BOOT_RETRY_MIN
78 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
81 #ifdef CONFIG_MODEM_SUPPORT
83 extern void mdm_init(void); /* defined in board.c */
86 /***************************************************************************
87 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
88 * returns: 0 - no key string, allow autoboot 1 - got key string, abort
90 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
91 # if defined(CONFIG_AUTOBOOT_KEYED)
95 int abortboot(int bootdelay
)
98 uint64_t etime
= endtick(bootdelay
);
105 { str
: getenv ("bootdelaykey"), retry
: 1 },
106 { str
: getenv ("bootdelaykey2"), retry
: 1 },
107 { str
: getenv ("bootstopkey"), retry
: 0 },
108 { str
: getenv ("bootstopkey2"), retry
: 0 },
111 char presskey
[MAX_DELAY_STOP_STR
];
112 u_int presskey_len
= 0;
113 u_int presskey_max
= 0;
116 # ifdef CONFIG_AUTOBOOT_PROMPT
117 printf(CONFIG_AUTOBOOT_PROMPT
);
120 # ifdef CONFIG_AUTOBOOT_DELAY_STR
121 if (delaykey
[0].str
== NULL
)
122 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
124 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
125 if (delaykey
[1].str
== NULL
)
126 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
128 # ifdef CONFIG_AUTOBOOT_STOP_STR
129 if (delaykey
[2].str
== NULL
)
130 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
132 # ifdef CONFIG_AUTOBOOT_STOP_STR2
133 if (delaykey
[3].str
== NULL
)
134 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
137 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
138 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
139 0 : strlen (delaykey
[i
].str
);
140 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
141 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
143 presskey_max
= presskey_max
> delaykey
[i
].len
?
144 presskey_max
: delaykey
[i
].len
;
147 printf("%s key:<%s>\n",
148 delaykey
[i
].retry
? "delay" : "stop",
149 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
153 /* In order to keep up with incoming data, check timeout only
158 if (presskey_len
< presskey_max
) {
159 presskey
[presskey_len
++] = getc();
162 for (i
= 0; i
< presskey_max
- 1; i
++)
163 presskey
[i
] = presskey
[i
+ 1];
165 presskey
[i
] = getc();
169 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
170 if (delaykey
[i
].len
> 0 &&
171 presskey_len
>= delaykey
[i
].len
&&
172 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
174 delaykey
[i
].len
) == 0) {
176 printf("got %skey\n",
177 delaykey
[i
].retry
? "delay" : "stop");
180 # ifdef CONFIG_BOOT_RETRY_TIME
181 /* don't retry auto boot */
182 if (! delaykey
[i
].retry
)
188 } while (!abort
&& get_ticks() <= etime
);
192 puts("key timeout\n");
195 #ifdef CONFIG_SILENT_CONSOLE
197 gd
->flags
&= ~GD_FLG_SILENT
;
203 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
205 #ifdef CONFIG_MENUKEY
206 static int menukey
= 0;
212 int abortboot(int bootdelay
)
216 #ifdef CONFIG_MENUPROMPT
217 printf(CONFIG_MENUPROMPT
);
219 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
222 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
224 * Check if key already pressed
225 * Don't check if bootdelay < 0
227 if (bootdelay
>= 0) {
228 if (tstc()) { /* we got a key press */
229 (void) getc(); /* consume input */
231 abort
= 1; /* don't auto boot */
236 while ((bootdelay
> 0) && (!abort
)) {
240 /* delay 100 * 10ms */
241 for (i
=0; !abort
&& i
<100; ++i
) {
242 if (tstc()) { /* we got a key press */
243 abort
= 1; /* don't auto boot */
244 bootdelay
= 0; /* no more delay */
245 # ifdef CONFIG_MENUKEY
248 (void) getc(); /* consume input */
255 printf("\b\b\b%2d ", bootdelay
);
260 #ifdef CONFIG_SILENT_CONSOLE
262 gd
->flags
&= ~GD_FLG_SILENT
;
267 # endif /* CONFIG_AUTOBOOT_KEYED */
268 #endif /* CONFIG_BOOTDELAY >= 0 */
270 /****************************************************************************/
272 void main_loop (void)
274 #ifndef CONFIG_SYS_HUSH_PARSER
275 static char lastcommand
[CONFIG_SYS_CBSIZE
] = { 0, };
281 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
285 #ifdef CONFIG_PREBOOT
288 #ifdef CONFIG_BOOTCOUNT_LIMIT
289 unsigned long bootcount
= 0;
290 unsigned long bootlimit
= 0;
293 #endif /* CONFIG_BOOTCOUNT_LIMIT */
295 #ifdef CONFIG_BOOTCOUNT_LIMIT
296 bootcount
= bootcount_load();
298 bootcount_store (bootcount
);
299 sprintf (bcs_set
, "%lu", bootcount
);
300 setenv ("bootcount", bcs_set
);
301 bcs
= getenv ("bootlimit");
302 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
303 #endif /* CONFIG_BOOTCOUNT_LIMIT */
305 #ifdef CONFIG_MODEM_SUPPORT
306 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
308 char *str
= strdup(getenv("mdm_cmd"));
309 setenv ("preboot", str
); /* set or delete definition */
312 mdm_init(); /* wait for modem connection */
314 #endif /* CONFIG_MODEM_SUPPORT */
316 #ifdef CONFIG_VERSION_VARIABLE
318 setenv ("ver", version_string
); /* set version variable */
320 #endif /* CONFIG_VERSION_VARIABLE */
322 #ifdef CONFIG_SYS_HUSH_PARSER
323 u_boot_hush_start ();
326 #if defined(CONFIG_HUSH_INIT_VAR)
330 #ifdef CONFIG_PREBOOT
331 if ((p
= getenv ("preboot")) != NULL
) {
332 # ifdef CONFIG_AUTOBOOT_KEYED
333 int prev
= disable_ctrlc(1); /* disable Control C checking */
338 # ifdef CONFIG_AUTOBOOT_KEYED
339 disable_ctrlc(prev
); /* restore Control C checking */
342 #endif /* CONFIG_PREBOOT */
344 #if defined(CONFIG_UPDATE_TFTP)
346 #endif /* CONFIG_UPDATE_TFTP */
348 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
349 s
= getenv ("bootdelay");
350 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
352 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
354 #if defined(CONFIG_MENU_SHOW)
355 bootdelay
= menu_show(bootdelay
);
357 # ifdef CONFIG_BOOT_RETRY_TIME
359 # endif /* CONFIG_BOOT_RETRY_TIME */
362 if (gd
->flags
& GD_FLG_POSTFAIL
) {
363 s
= getenv("failbootcmd");
366 #endif /* CONFIG_POST */
367 #ifdef CONFIG_BOOTCOUNT_LIMIT
368 if (bootlimit
&& (bootcount
> bootlimit
)) {
369 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
370 (unsigned)bootlimit
);
371 s
= getenv ("altbootcmd");
374 #endif /* CONFIG_BOOTCOUNT_LIMIT */
375 s
= getenv ("bootcmd");
377 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
379 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
380 # ifdef CONFIG_AUTOBOOT_KEYED
381 int prev
= disable_ctrlc(1); /* disable Control C checking */
386 # ifdef CONFIG_AUTOBOOT_KEYED
387 disable_ctrlc(prev
); /* restore Control C checking */
391 # ifdef CONFIG_MENUKEY
392 if (menukey
== CONFIG_MENUKEY
) {
393 s
= getenv("menucmd");
397 #endif /* CONFIG_MENUKEY */
398 #endif /* CONFIG_BOOTDELAY */
401 * Main Loop for Monitor Command Processing
403 #ifdef CONFIG_SYS_HUSH_PARSER
405 /* This point is never reached */
409 #ifdef CONFIG_BOOT_RETRY_TIME
411 /* Saw enough of a valid command to
412 * restart the timeout.
417 len
= readline (CONFIG_SYS_PROMPT
);
419 flag
= 0; /* assume no special flags for now */
421 strcpy (lastcommand
, console_buffer
);
423 flag
|= CMD_FLAG_REPEAT
;
424 #ifdef CONFIG_BOOT_RETRY_TIME
425 else if (len
== -2) {
426 /* -2 means timed out, retry autoboot
428 puts ("\nTimed out waiting for command\n");
429 # ifdef CONFIG_RESET_TO_RETRY
430 /* Reinit board to run initialization code again */
431 do_reset (NULL
, 0, 0, NULL
);
433 return; /* retry autoboot */
439 puts ("<INTERRUPT>\n");
441 rc
= run_command(lastcommand
, flag
);
444 /* invalid command or not repeatable, forget it */
448 #endif /*CONFIG_SYS_HUSH_PARSER*/
451 #ifdef CONFIG_BOOT_RETRY_TIME
452 /***************************************************************************
453 * initialize command line timeout
455 void init_cmd_timeout(void)
457 char *s
= getenv ("bootretry");
460 retry_time
= (int)simple_strtol(s
, NULL
, 10);
462 retry_time
= CONFIG_BOOT_RETRY_TIME
;
464 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
465 retry_time
= CONFIG_BOOT_RETRY_MIN
;
468 /***************************************************************************
469 * reset command line timeout to retry_time seconds
471 void reset_cmd_timeout(void)
473 endtime
= endtick(retry_time
);
477 #ifdef CONFIG_CMDLINE_EDITING
480 * cmdline-editing related codes from vivi.
481 * Author: Janghoon Lyu <nandy@mizi.com>
484 #define putnstr(str,n) do { \
485 printf ("%.*s", (int)n, str); \
488 #define CTL_CH(c) ((c) - 'a' + 1)
489 #define CTL_BACKSPACE ('\b')
490 #define DEL ((char)255)
491 #define DEL7 ((char)127)
492 #define CREAD_HIST_CHAR ('!')
494 #define getcmd_putch(ch) putc(ch)
495 #define getcmd_getch() getc()
496 #define getcmd_cbeep() getcmd_putch('\a')
499 #define HIST_SIZE CONFIG_SYS_CBSIZE
501 static int hist_max
= 0;
502 static int hist_add_idx
= 0;
503 static int hist_cur
= -1;
504 unsigned hist_num
= 0;
506 char* hist_list
[HIST_MAX
];
507 char hist_lines
[HIST_MAX
][HIST_SIZE
+ 1]; /* Save room for NULL */
509 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
511 static void hist_init(void)
520 for (i
= 0; i
< HIST_MAX
; i
++) {
521 hist_list
[i
] = hist_lines
[i
];
522 hist_list
[i
][0] = '\0';
526 static void cread_add_to_hist(char *line
)
528 strcpy(hist_list
[hist_add_idx
], line
);
530 if (++hist_add_idx
>= HIST_MAX
)
533 if (hist_add_idx
> hist_max
)
534 hist_max
= hist_add_idx
;
539 static char* hist_prev(void)
551 if (hist_cur
== hist_add_idx
) {
555 ret
= hist_list
[hist_cur
];
560 static char* hist_next(void)
567 if (hist_cur
== hist_add_idx
)
570 if (++hist_cur
> hist_max
)
573 if (hist_cur
== hist_add_idx
) {
576 ret
= hist_list
[hist_cur
];
581 #ifndef CONFIG_CMDLINE_EDITING
582 static void cread_print_hist_list(void)
587 n
= hist_num
- hist_max
;
589 i
= hist_add_idx
+ 1;
593 if (i
== hist_add_idx
)
595 printf("%s\n", hist_list
[i
]);
600 #endif /* CONFIG_CMDLINE_EDITING */
602 #define BEGINNING_OF_LINE() { \
604 getcmd_putch(CTL_BACKSPACE); \
609 #define ERASE_TO_EOL() { \
610 if (num < eol_num) { \
611 printf("%*s", (int)(eol_num - num), ""); \
613 getcmd_putch(CTL_BACKSPACE); \
614 } while (--eol_num > num); \
618 #define REFRESH_TO_EOL() { \
619 if (num < eol_num) { \
620 wlen = eol_num - num; \
621 putnstr(buf + num, wlen); \
626 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
627 unsigned long *eol_num
, char *buf
, unsigned long len
)
632 if (insert
|| *num
== *eol_num
) {
633 if (*eol_num
> len
- 1) {
641 wlen
= *eol_num
- *num
;
643 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
647 putnstr(buf
+ *num
, wlen
);
650 getcmd_putch(CTL_BACKSPACE
);
653 /* echo the character */
656 putnstr(buf
+ *num
, wlen
);
661 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
662 unsigned long *eol_num
, char *buf
, unsigned long len
)
665 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
670 static int cread_line(const char *const prompt
, char *buf
, unsigned int *len
,
673 unsigned long num
= 0;
674 unsigned long eol_num
= 0;
680 int init_len
= strlen(buf
);
684 cread_add_str(buf
, init_len
, 1, &num
, &eol_num
, buf
, *len
);
687 #ifdef CONFIG_BOOT_RETRY_TIME
688 while (!tstc()) { /* while no incoming data */
689 if (retry_time
>= 0 && get_ticks() > endtime
)
690 return (-2); /* timed out */
694 if (first
&& timeout
) {
695 uint64_t etime
= endtick(timeout
);
697 while (!tstc()) { /* while no incoming data */
698 if (get_ticks() >= etime
)
699 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
, 0);
923 int readline_into_buffer(const char *const prompt
, char *buffer
, int timeout
)
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
, timeout
);
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
983 * Special character handling
986 case '\r': /* Enter */
995 case 0x03: /* ^C - break */
996 p_buf
[0] = '\0'; /* discard input */
999 case 0x15: /* ^U - erase line */
1000 while (col
> plen
) {
1008 case 0x17: /* ^W - erase word */
1009 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1010 while ((n
> 0) && (*p
!= ' ')) {
1011 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1015 case 0x08: /* ^H - backspace */
1016 case 0x7F: /* DEL - backspace */
1017 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1022 * Must be a normal character then
1024 if (n
< CONFIG_SYS_CBSIZE
-2) {
1025 if (c
== '\t') { /* expand TABs */
1026 #ifdef CONFIG_AUTO_COMPLETE
1027 /* if auto completion triggered just continue */
1029 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
1030 p
= p_buf
+ n
; /* reset */
1034 puts (tab_seq
+(col
&07));
1035 col
+= 8 - (col
&07);
1037 ++col
; /* echo input */
1042 } else { /* Buffer full */
1047 #ifdef CONFIG_CMDLINE_EDITING
1052 /****************************************************************************/
1054 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1062 if (*(--p
) == '\t') { /* will retype the whole line */
1063 while (*colp
> plen
) {
1067 for (s
=buffer
; s
<p
; ++s
) {
1069 puts (tab_seq
+((*colp
) & 07));
1070 *colp
+= 8 - ((*colp
) & 07);
1084 /****************************************************************************/
1086 int parse_line (char *line
, char *argv
[])
1091 printf ("parse_line: \"%s\"\n", line
);
1093 while (nargs
< CONFIG_SYS_MAXARGS
) {
1095 /* skip any white space */
1096 while (isblank(*line
))
1099 if (*line
== '\0') { /* end of line, no more args */
1102 printf ("parse_line: nargs=%d\n", nargs
);
1107 argv
[nargs
++] = line
; /* begin of argument string */
1109 /* find end of string */
1110 while (*line
&& !isblank(*line
))
1113 if (*line
== '\0') { /* end of line, no more args */
1116 printf ("parse_line: nargs=%d\n", nargs
);
1121 *line
++ = '\0'; /* terminate current arg */
1124 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS
);
1127 printf ("parse_line: nargs=%d\n", nargs
);
1132 /****************************************************************************/
1134 #ifndef CONFIG_SYS_HUSH_PARSER
1135 static void process_macros (const char *input
, char *output
)
1138 const char *varname_start
= NULL
;
1139 int inputcnt
= strlen (input
);
1140 int outputcnt
= CONFIG_SYS_CBSIZE
;
1141 int state
= 0; /* 0 = waiting for '$' */
1143 /* 1 = waiting for '(' or '{' */
1144 /* 2 = waiting for ')' or '}' */
1145 /* 3 = waiting for ''' */
1147 char *output_start
= output
;
1149 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1153 prev
= '\0'; /* previous character */
1155 while (inputcnt
&& outputcnt
) {
1160 /* remove one level of escape characters */
1161 if ((c
== '\\') && (prev
!= '\\')) {
1162 if (inputcnt
-- == 0)
1170 case 0: /* Waiting for (unescaped) $ */
1171 if ((c
== '\'') && (prev
!= '\\')) {
1175 if ((c
== '$') && (prev
!= '\\')) {
1182 case 1: /* Waiting for ( */
1183 if (c
== '(' || c
== '{') {
1185 varname_start
= input
;
1197 case 2: /* Waiting for ) */
1198 if (c
== ')' || c
== '}') {
1200 char envname
[CONFIG_SYS_CBSIZE
], *envval
;
1201 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1203 /* Get the varname */
1204 for (i
= 0; i
< envcnt
; i
++) {
1205 envname
[i
] = varname_start
[i
];
1210 envval
= getenv (envname
);
1212 /* Copy into the line if it exists */
1214 while ((*envval
) && outputcnt
) {
1215 *(output
++) = *(envval
++);
1218 /* Look for another '$' */
1222 case 3: /* Waiting for ' */
1223 if ((c
== '\'') && (prev
!= '\\')) {
1240 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1241 strlen (output_start
), output_start
);
1245 /****************************************************************************
1247 * 1 - command executed, repeatable
1248 * 0 - command executed but not repeatable, interrupted commands are
1249 * always considered not repeatable
1250 * -1 - not executed (unrecognized, bootd recursion or too many args)
1251 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1252 * considered unrecognized)
1256 * We must create a temporary copy of the command since the command we get
1257 * may be the result from getenv(), which returns a pointer directly to
1258 * the environment data, which may change magicly when the command we run
1259 * creates or modifies environment variables (like "bootp" does).
1261 static int builtin_run_command(const char *cmd
, int flag
)
1263 char cmdbuf
[CONFIG_SYS_CBSIZE
]; /* working copy of cmd */
1264 char *token
; /* start of token in cmdbuf */
1265 char *sep
; /* end of token (separator) in cmdbuf */
1266 char finaltoken
[CONFIG_SYS_CBSIZE
];
1268 char *argv
[CONFIG_SYS_MAXARGS
+ 1]; /* NULL terminated */
1274 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
1275 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
1279 clear_ctrlc(); /* forget any previous Control C */
1281 if (!cmd
|| !*cmd
) {
1282 return -1; /* empty command */
1285 if (strlen(cmd
) >= CONFIG_SYS_CBSIZE
) {
1286 puts ("## Command too long!\n");
1290 strcpy (cmdbuf
, cmd
);
1292 /* Process separators and check for invalid
1293 * repeatable commands
1297 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
1302 * Find separator, or string end
1303 * Allow simple escape of ';' by writing "\;"
1305 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
1311 (*sep
== ';') && /* separator */
1312 ( sep
!= str
) && /* past string start */
1313 (*(sep
-1) != '\\')) /* and NOT escaped */
1318 * Limit the token to data between separators
1322 str
= sep
+ 1; /* start of command for next pass */
1326 str
= sep
; /* no more commands for next pass */
1328 printf ("token: \"%s\"\n", token
);
1331 /* find macros in this token and replace them */
1332 process_macros (token
, finaltoken
);
1334 /* Extract arguments */
1335 if ((argc
= parse_line (finaltoken
, argv
)) == 0) {
1336 rc
= -1; /* no command at all */
1340 if (cmd_process(flag
, argc
, argv
, &repeatable
))
1343 /* Did the user stop this? */
1345 return -1; /* if stopped then not repeatable */
1348 return rc
? rc
: repeatable
;
1353 * Run a command using the selected parser.
1355 * @param cmd Command to run
1356 * @param flag Execution flags (CMD_FLAG_...)
1357 * @return 0 on success, or != 0 on error.
1359 int run_command(const char *cmd
, int flag
)
1361 #ifndef CONFIG_SYS_HUSH_PARSER
1363 * builtin_run_command can return 0 or 1 for success, so clean up
1366 if (builtin_run_command(cmd
, flag
) == -1)
1371 return parse_string_outer(cmd
,
1372 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
);
1376 /****************************************************************************/
1378 #if defined(CONFIG_CMD_RUN)
1379 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1384 return CMD_RET_USAGE
;
1386 for (i
=1; i
<argc
; ++i
) {
1389 if ((arg
= getenv (argv
[i
])) == NULL
) {
1390 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1394 if (run_command(arg
, flag
) != 0)