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,
33 #ifdef CONFIG_MODEM_SUPPORT
34 #include <malloc.h> /* for free() prototype */
37 #ifdef CONFIG_SYS_HUSH_PARSER
43 #if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
44 DECLARE_GLOBAL_DATA_PTR
;
48 * Board-specific Platform code can reimplement show_boot_progress () if needed
50 void inline __show_boot_progress (int val
) {}
51 void inline show_boot_progress (int val
) __attribute__((weak
, alias("__show_boot_progress")));
53 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
54 extern int do_reset (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]); /* for do_reset() prototype */
57 extern int do_bootd (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[]);
59 #if defined(CONFIG_UPDATE_TFTP)
60 void update_tftp (void);
61 #endif /* CONFIG_UPDATE_TFTP */
63 #define MAX_DELAY_STOP_STR 32
65 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
66 static int abortboot(int);
71 char console_buffer
[CONFIG_SYS_CBSIZE
]; /* console I/O buffer */
73 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
74 static char erase_seq
[] = "\b \b"; /* erase sequence */
75 static char tab_seq
[] = " "; /* used to expand TABs */
77 #ifdef CONFIG_BOOT_RETRY_TIME
78 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
79 static int retry_time
= -1; /* -1 so can call readline before main_loop */
82 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
84 #ifndef CONFIG_BOOT_RETRY_MIN
85 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
88 #ifdef CONFIG_MODEM_SUPPORT
90 extern void mdm_init(void); /* defined in board.c */
93 /***************************************************************************
94 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
95 * returns: 0 - no key string, allow autoboot
96 * 1 - got key string, abort
98 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
99 # if defined(CONFIG_AUTOBOOT_KEYED)
100 static __inline__
int abortboot(int bootdelay
)
103 uint64_t etime
= endtick(bootdelay
);
110 { str
: getenv ("bootdelaykey"), retry
: 1 },
111 { str
: getenv ("bootdelaykey2"), retry
: 1 },
112 { str
: getenv ("bootstopkey"), retry
: 0 },
113 { str
: getenv ("bootstopkey2"), retry
: 0 },
116 char presskey
[MAX_DELAY_STOP_STR
];
117 u_int presskey_len
= 0;
118 u_int presskey_max
= 0;
121 # ifdef CONFIG_AUTOBOOT_PROMPT
122 printf(CONFIG_AUTOBOOT_PROMPT
);
125 # ifdef CONFIG_AUTOBOOT_DELAY_STR
126 if (delaykey
[0].str
== NULL
)
127 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
129 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
130 if (delaykey
[1].str
== NULL
)
131 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
133 # ifdef CONFIG_AUTOBOOT_STOP_STR
134 if (delaykey
[2].str
== NULL
)
135 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
137 # ifdef CONFIG_AUTOBOOT_STOP_STR2
138 if (delaykey
[3].str
== NULL
)
139 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
142 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
143 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
144 0 : strlen (delaykey
[i
].str
);
145 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
146 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
148 presskey_max
= presskey_max
> delaykey
[i
].len
?
149 presskey_max
: delaykey
[i
].len
;
152 printf("%s key:<%s>\n",
153 delaykey
[i
].retry
? "delay" : "stop",
154 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
158 /* In order to keep up with incoming data, check timeout only
161 while (!abort
&& get_ticks() <= etime
) {
162 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
163 if (delaykey
[i
].len
> 0 &&
164 presskey_len
>= delaykey
[i
].len
&&
165 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
167 delaykey
[i
].len
) == 0) {
169 printf("got %skey\n",
170 delaykey
[i
].retry
? "delay" : "stop");
173 # ifdef CONFIG_BOOT_RETRY_TIME
174 /* don't retry auto boot */
175 if (! delaykey
[i
].retry
)
183 if (presskey_len
< presskey_max
) {
184 presskey
[presskey_len
++] = getc();
187 for (i
= 0; i
< presskey_max
- 1; i
++)
188 presskey
[i
] = presskey
[i
+ 1];
190 presskey
[i
] = getc();
196 puts("key timeout\n");
199 #ifdef CONFIG_SILENT_CONSOLE
201 gd
->flags
&= ~GD_FLG_SILENT
;
207 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
209 #ifdef CONFIG_MENUKEY
210 static int menukey
= 0;
213 static __inline__
int abortboot(int bootdelay
)
217 #ifdef CONFIG_MENUPROMPT
218 printf(CONFIG_MENUPROMPT
);
220 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
223 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
225 * Check if key already pressed
226 * Don't check if bootdelay < 0
228 if (bootdelay
>= 0) {
229 if (tstc()) { /* we got a key press */
230 (void) getc(); /* consume input */
232 abort
= 1; /* don't auto boot */
237 while ((bootdelay
> 0) && (!abort
)) {
241 /* delay 100 * 10ms */
242 for (i
=0; !abort
&& i
<100; ++i
) {
243 if (tstc()) { /* we got a key press */
244 abort
= 1; /* don't auto boot */
245 bootdelay
= 0; /* no more delay */
246 # ifdef CONFIG_MENUKEY
249 (void) getc(); /* consume input */
256 printf("\b\b\b%2d ", bootdelay
);
261 #ifdef CONFIG_SILENT_CONSOLE
263 gd
->flags
&= ~GD_FLG_SILENT
;
268 # endif /* CONFIG_AUTOBOOT_KEYED */
269 #endif /* CONFIG_BOOTDELAY >= 0 */
271 /****************************************************************************/
273 void main_loop (void)
275 #ifndef CONFIG_SYS_HUSH_PARSER
276 static char lastcommand
[CONFIG_SYS_CBSIZE
] = { 0, };
282 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
286 #ifdef CONFIG_PREBOOT
289 #ifdef CONFIG_BOOTCOUNT_LIMIT
290 unsigned long bootcount
= 0;
291 unsigned long bootlimit
= 0;
294 #endif /* CONFIG_BOOTCOUNT_LIMIT */
296 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
297 ulong bmp
= 0; /* default bitmap */
298 extern int trab_vfd (ulong bitmap
);
300 #ifdef CONFIG_MODEM_SUPPORT
302 bmp
= 1; /* alternate bitmap */
305 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
307 #if defined(CONFIG_UPDATE_TFTP)
309 #endif /* CONFIG_UPDATE_TFTP */
311 #ifdef CONFIG_BOOTCOUNT_LIMIT
312 bootcount
= bootcount_load();
314 bootcount_store (bootcount
);
315 sprintf (bcs_set
, "%lu", bootcount
);
316 setenv ("bootcount", bcs_set
);
317 bcs
= getenv ("bootlimit");
318 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
319 #endif /* CONFIG_BOOTCOUNT_LIMIT */
321 #ifdef CONFIG_MODEM_SUPPORT
322 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
324 char *str
= strdup(getenv("mdm_cmd"));
325 setenv ("preboot", str
); /* set or delete definition */
328 mdm_init(); /* wait for modem connection */
330 #endif /* CONFIG_MODEM_SUPPORT */
332 #ifdef CONFIG_VERSION_VARIABLE
334 extern char version_string
[];
336 setenv ("ver", version_string
); /* set version variable */
338 #endif /* CONFIG_VERSION_VARIABLE */
340 #ifdef CONFIG_SYS_HUSH_PARSER
341 u_boot_hush_start ();
344 #if defined(CONFIG_HUSH_INIT_VAR)
348 #ifdef CONFIG_AUTO_COMPLETE
349 install_auto_complete();
352 #ifdef CONFIG_PREBOOT
353 if ((p
= getenv ("preboot")) != NULL
) {
354 # ifdef CONFIG_AUTOBOOT_KEYED
355 int prev
= disable_ctrlc(1); /* disable Control C checking */
358 # ifndef CONFIG_SYS_HUSH_PARSER
361 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
362 FLAG_EXIT_FROM_LOOP
);
365 # ifdef CONFIG_AUTOBOOT_KEYED
366 disable_ctrlc(prev
); /* restore Control C checking */
369 #endif /* CONFIG_PREBOOT */
371 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
372 s
= getenv ("bootdelay");
373 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
375 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
377 # ifdef CONFIG_BOOT_RETRY_TIME
379 # endif /* CONFIG_BOOT_RETRY_TIME */
382 if (gd
->flags
& GD_FLG_POSTFAIL
) {
383 s
= getenv("failbootcmd");
386 #endif /* CONFIG_POST */
387 #ifdef CONFIG_BOOTCOUNT_LIMIT
388 if (bootlimit
&& (bootcount
> bootlimit
)) {
389 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
390 (unsigned)bootlimit
);
391 s
= getenv ("altbootcmd");
394 #endif /* CONFIG_BOOTCOUNT_LIMIT */
395 s
= getenv ("bootcmd");
397 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
399 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
400 # ifdef CONFIG_AUTOBOOT_KEYED
401 int prev
= disable_ctrlc(1); /* disable Control C checking */
404 # ifndef CONFIG_SYS_HUSH_PARSER
407 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
408 FLAG_EXIT_FROM_LOOP
);
411 # ifdef CONFIG_AUTOBOOT_KEYED
412 disable_ctrlc(prev
); /* restore Control C checking */
416 # ifdef CONFIG_MENUKEY
417 if (menukey
== CONFIG_MENUKEY
) {
418 s
= getenv("menucmd");
420 # ifndef CONFIG_SYS_HUSH_PARSER
423 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
424 FLAG_EXIT_FROM_LOOP
);
428 #endif /* CONFIG_MENUKEY */
429 #endif /* CONFIG_BOOTDELAY */
431 #ifdef CONFIG_AMIGAONEG3SE
433 extern void video_banner(void);
439 * Main Loop for Monitor Command Processing
441 #ifdef CONFIG_SYS_HUSH_PARSER
443 /* This point is never reached */
447 #ifdef CONFIG_BOOT_RETRY_TIME
449 /* Saw enough of a valid command to
450 * restart the timeout.
455 len
= readline (CONFIG_SYS_PROMPT
);
457 flag
= 0; /* assume no special flags for now */
459 strcpy (lastcommand
, console_buffer
);
461 flag
|= CMD_FLAG_REPEAT
;
462 #ifdef CONFIG_BOOT_RETRY_TIME
463 else if (len
== -2) {
464 /* -2 means timed out, retry autoboot
466 puts ("\nTimed out waiting for command\n");
467 # ifdef CONFIG_RESET_TO_RETRY
468 /* Reinit board to run initialization code again */
469 do_reset (NULL
, 0, 0, NULL
);
471 return; /* retry autoboot */
477 puts ("<INTERRUPT>\n");
479 rc
= run_command (lastcommand
, flag
);
482 /* invalid command or not repeatable, forget it */
486 #endif /*CONFIG_SYS_HUSH_PARSER*/
489 #ifdef CONFIG_BOOT_RETRY_TIME
490 /***************************************************************************
491 * initialize command line timeout
493 void init_cmd_timeout(void)
495 char *s
= getenv ("bootretry");
498 retry_time
= (int)simple_strtol(s
, NULL
, 10);
500 retry_time
= CONFIG_BOOT_RETRY_TIME
;
502 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
503 retry_time
= CONFIG_BOOT_RETRY_MIN
;
506 /***************************************************************************
507 * reset command line timeout to retry_time seconds
509 void reset_cmd_timeout(void)
511 endtime
= endtick(retry_time
);
515 #ifdef CONFIG_CMDLINE_EDITING
518 * cmdline-editing related codes from vivi.
519 * Author: Janghoon Lyu <nandy@mizi.com>
522 #define putnstr(str,n) do { \
523 printf ("%.*s", (int)n, str); \
526 #define CTL_CH(c) ((c) - 'a' + 1)
528 #define MAX_CMDBUF_SIZE 256
530 #define CTL_BACKSPACE ('\b')
531 #define DEL ((char)255)
532 #define DEL7 ((char)127)
533 #define CREAD_HIST_CHAR ('!')
535 #define getcmd_putch(ch) putc(ch)
536 #define getcmd_getch() getc()
537 #define getcmd_cbeep() getcmd_putch('\a')
540 #define HIST_SIZE MAX_CMDBUF_SIZE
542 static int hist_max
= 0;
543 static int hist_add_idx
= 0;
544 static int hist_cur
= -1;
545 unsigned hist_num
= 0;
547 char* hist_list
[HIST_MAX
];
548 char hist_lines
[HIST_MAX
][HIST_SIZE
];
550 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
552 static void hist_init(void)
561 for (i
= 0; i
< HIST_MAX
; i
++) {
562 hist_list
[i
] = hist_lines
[i
];
563 hist_list
[i
][0] = '\0';
567 static void cread_add_to_hist(char *line
)
569 strcpy(hist_list
[hist_add_idx
], line
);
571 if (++hist_add_idx
>= HIST_MAX
)
574 if (hist_add_idx
> hist_max
)
575 hist_max
= hist_add_idx
;
580 static char* hist_prev(void)
592 if (hist_cur
== hist_add_idx
) {
596 ret
= hist_list
[hist_cur
];
601 static char* hist_next(void)
608 if (hist_cur
== hist_add_idx
)
611 if (++hist_cur
> hist_max
)
614 if (hist_cur
== hist_add_idx
) {
617 ret
= hist_list
[hist_cur
];
622 #ifndef CONFIG_CMDLINE_EDITING
623 static void cread_print_hist_list(void)
628 n
= hist_num
- hist_max
;
630 i
= hist_add_idx
+ 1;
634 if (i
== hist_add_idx
)
636 printf("%s\n", hist_list
[i
]);
641 #endif /* CONFIG_CMDLINE_EDITING */
643 #define BEGINNING_OF_LINE() { \
645 getcmd_putch(CTL_BACKSPACE); \
650 #define ERASE_TO_EOL() { \
651 if (num < eol_num) { \
653 for (tmp = num; tmp < eol_num; tmp++) \
655 while (tmp-- > num) \
656 getcmd_putch(CTL_BACKSPACE); \
661 #define REFRESH_TO_EOL() { \
662 if (num < eol_num) { \
663 wlen = eol_num - num; \
664 putnstr(buf + num, wlen); \
669 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
670 unsigned long *eol_num
, char *buf
, unsigned long len
)
675 if (insert
|| *num
== *eol_num
) {
676 if (*eol_num
> len
- 1) {
684 wlen
= *eol_num
- *num
;
686 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
690 putnstr(buf
+ *num
, wlen
);
693 getcmd_putch(CTL_BACKSPACE
);
696 /* echo the character */
699 putnstr(buf
+ *num
, wlen
);
704 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
705 unsigned long *eol_num
, char *buf
, unsigned long len
)
708 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
713 static int cread_line(const char *const prompt
, char *buf
, unsigned int *len
)
715 unsigned long num
= 0;
716 unsigned long eol_num
= 0;
727 #ifdef CONFIG_BOOT_RETRY_TIME
728 while (!tstc()) { /* while no incoming data */
729 if (retry_time
>= 0 && get_ticks() > endtime
)
730 return (-2); /* timed out */
734 ichar
= getcmd_getch();
736 if ((ichar
== '\n') || (ichar
== '\r')) {
742 * handle standard linux xterm esc sequences for arrow key, etc.
747 esc_save
[esc_len
] = ichar
;
750 cread_add_str(esc_save
, esc_len
, insert
,
751 &num
, &eol_num
, buf
, *len
);
759 case 'D': /* <- key */
763 case 'C': /* -> key */
766 break; /* pass off to ^F handler */
767 case 'H': /* Home key */
770 break; /* pass off to ^A handler */
771 case 'A': /* up arrow */
774 break; /* pass off to ^P handler */
775 case 'B': /* down arrow */
778 break; /* pass off to ^N handler */
780 esc_save
[esc_len
++] = ichar
;
781 cread_add_str(esc_save
, esc_len
, insert
,
782 &num
, &eol_num
, buf
, *len
);
791 esc_save
[esc_len
] = ichar
;
794 puts("impossible condition #876\n");
802 case CTL_CH('c'): /* ^C - break */
803 *buf
= '\0'; /* discard input */
807 getcmd_putch(buf
[num
]);
813 getcmd_putch(CTL_BACKSPACE
);
819 wlen
= eol_num
- num
- 1;
821 memmove(&buf
[num
], &buf
[num
+1], wlen
);
822 putnstr(buf
+ num
, wlen
);
827 getcmd_putch(CTL_BACKSPACE
);
850 wlen
= eol_num
- num
;
852 memmove(&buf
[num
], &buf
[num
+1], wlen
);
853 getcmd_putch(CTL_BACKSPACE
);
854 putnstr(buf
+ num
, wlen
);
857 getcmd_putch(CTL_BACKSPACE
);
869 if (ichar
== CTL_CH('p'))
879 /* nuke the current line */
883 /* erase to end of line */
886 /* copy new line into place and display */
888 eol_num
= strlen(buf
);
892 #ifdef CONFIG_AUTO_COMPLETE
896 /* do not autocomplete when in the middle */
903 col
= strlen(prompt
) + eol_num
;
905 if (cmd_auto_complete(prompt
, buf
, &num2
, &col
)) {
914 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, *len
);
919 buf
[eol_num
] = '\0'; /* lose the newline */
921 if (buf
[0] && buf
[0] != CREAD_HIST_CHAR
)
922 cread_add_to_hist(buf
);
923 hist_cur
= hist_add_idx
;
928 #endif /* CONFIG_CMDLINE_EDITING */
930 /****************************************************************************/
933 * Prompt for input and read a line.
934 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
935 * time out when time goes past endtime (timebase time in ticks).
936 * Return: number of read characters
940 int readline (const char *const prompt
)
942 return readline_into_buffer(prompt
, console_buffer
);
946 int readline_into_buffer (const char *const prompt
, char * buffer
)
949 #ifdef CONFIG_CMDLINE_EDITING
950 unsigned int len
=MAX_CMDBUF_SIZE
;
952 static int initted
= 0;
955 * History uses a global array which is not
956 * writable until after relocation to RAM.
957 * Revert to non-history version if still
958 * running from flash.
960 if (gd
->flags
& GD_FLG_RELOC
) {
968 rc
= cread_line(prompt
, p
, &len
);
969 return rc
< 0 ? rc
: len
;
972 #endif /* CONFIG_CMDLINE_EDITING */
974 int n
= 0; /* buffer index */
975 int plen
= 0; /* prompt length */
976 int col
; /* output column cnt */
981 plen
= strlen (prompt
);
987 #ifdef CONFIG_BOOT_RETRY_TIME
988 while (!tstc()) { /* while no incoming data */
989 if (retry_time
>= 0 && get_ticks() > endtime
)
990 return (-2); /* timed out */
993 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
995 #ifdef CONFIG_SHOW_ACTIVITY
997 extern void show_activity(int arg
);
1004 * Special character handling
1007 case '\r': /* Enter */
1013 case '\0': /* nul */
1016 case 0x03: /* ^C - break */
1017 p_buf
[0] = '\0'; /* discard input */
1020 case 0x15: /* ^U - erase line */
1021 while (col
> plen
) {
1029 case 0x17: /* ^W - erase word */
1030 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1031 while ((n
> 0) && (*p
!= ' ')) {
1032 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1036 case 0x08: /* ^H - backspace */
1037 case 0x7F: /* DEL - backspace */
1038 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1043 * Must be a normal character then
1045 if (n
< CONFIG_SYS_CBSIZE
-2) {
1046 if (c
== '\t') { /* expand TABs */
1047 #ifdef CONFIG_AUTO_COMPLETE
1048 /* if auto completion triggered just continue */
1050 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
1051 p
= p_buf
+ n
; /* reset */
1055 puts (tab_seq
+(col
&07));
1056 col
+= 8 - (col
&07);
1058 ++col
; /* echo input */
1063 } else { /* Buffer full */
1068 #ifdef CONFIG_CMDLINE_EDITING
1073 /****************************************************************************/
1075 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1083 if (*(--p
) == '\t') { /* will retype the whole line */
1084 while (*colp
> plen
) {
1088 for (s
=buffer
; s
<p
; ++s
) {
1090 puts (tab_seq
+((*colp
) & 07));
1091 *colp
+= 8 - ((*colp
) & 07);
1105 /****************************************************************************/
1107 int parse_line (char *line
, char *argv
[])
1112 printf ("parse_line: \"%s\"\n", line
);
1114 while (nargs
< CONFIG_SYS_MAXARGS
) {
1116 /* skip any white space */
1117 while ((*line
== ' ') || (*line
== '\t')) {
1121 if (*line
== '\0') { /* end of line, no more args */
1124 printf ("parse_line: nargs=%d\n", nargs
);
1129 argv
[nargs
++] = line
; /* begin of argument string */
1131 /* find end of string */
1132 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
1136 if (*line
== '\0') { /* end of line, no more args */
1139 printf ("parse_line: nargs=%d\n", nargs
);
1144 *line
++ = '\0'; /* terminate current arg */
1147 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS
);
1150 printf ("parse_line: nargs=%d\n", nargs
);
1155 /****************************************************************************/
1157 static void process_macros (const char *input
, char *output
)
1160 const char *varname_start
= NULL
;
1161 int inputcnt
= strlen (input
);
1162 int outputcnt
= CONFIG_SYS_CBSIZE
;
1163 int state
= 0; /* 0 = waiting for '$' */
1165 /* 1 = waiting for '(' or '{' */
1166 /* 2 = waiting for ')' or '}' */
1167 /* 3 = waiting for ''' */
1169 char *output_start
= output
;
1171 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1175 prev
= '\0'; /* previous character */
1177 while (inputcnt
&& outputcnt
) {
1182 /* remove one level of escape characters */
1183 if ((c
== '\\') && (prev
!= '\\')) {
1184 if (inputcnt
-- == 0)
1192 case 0: /* Waiting for (unescaped) $ */
1193 if ((c
== '\'') && (prev
!= '\\')) {
1197 if ((c
== '$') && (prev
!= '\\')) {
1204 case 1: /* Waiting for ( */
1205 if (c
== '(' || c
== '{') {
1207 varname_start
= input
;
1219 case 2: /* Waiting for ) */
1220 if (c
== ')' || c
== '}') {
1222 char envname
[CONFIG_SYS_CBSIZE
], *envval
;
1223 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1225 /* Get the varname */
1226 for (i
= 0; i
< envcnt
; i
++) {
1227 envname
[i
] = varname_start
[i
];
1232 envval
= getenv (envname
);
1234 /* Copy into the line if it exists */
1236 while ((*envval
) && outputcnt
) {
1237 *(output
++) = *(envval
++);
1240 /* Look for another '$' */
1244 case 3: /* Waiting for ' */
1245 if ((c
== '\'') && (prev
!= '\\')) {
1262 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1263 strlen (output_start
), output_start
);
1267 /****************************************************************************
1269 * 1 - command executed, repeatable
1270 * 0 - command executed but not repeatable, interrupted commands are
1271 * always considered not repeatable
1272 * -1 - not executed (unrecognized, bootd recursion or too many args)
1273 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
1274 * considered unrecognized)
1278 * We must create a temporary copy of the command since the command we get
1279 * may be the result from getenv(), which returns a pointer directly to
1280 * the environment data, which may change magicly when the command we run
1281 * creates or modifies environment variables (like "bootp" does).
1284 int run_command (const char *cmd
, int flag
)
1287 char cmdbuf
[CONFIG_SYS_CBSIZE
]; /* working copy of cmd */
1288 char *token
; /* start of token in cmdbuf */
1289 char *sep
; /* end of token (separator) in cmdbuf */
1290 char finaltoken
[CONFIG_SYS_CBSIZE
];
1292 char *argv
[CONFIG_SYS_MAXARGS
+ 1]; /* NULL terminated */
1298 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
1299 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
1303 clear_ctrlc(); /* forget any previous Control C */
1305 if (!cmd
|| !*cmd
) {
1306 return -1; /* empty command */
1309 if (strlen(cmd
) >= CONFIG_SYS_CBSIZE
) {
1310 puts ("## Command too long!\n");
1314 strcpy (cmdbuf
, cmd
);
1316 /* Process separators and check for invalid
1317 * repeatable commands
1321 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
1326 * Find separator, or string end
1327 * Allow simple escape of ';' by writing "\;"
1329 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
1335 (*sep
== ';') && /* separator */
1336 ( sep
!= str
) && /* past string start */
1337 (*(sep
-1) != '\\')) /* and NOT escaped */
1342 * Limit the token to data between separators
1346 str
= sep
+ 1; /* start of command for next pass */
1350 str
= sep
; /* no more commands for next pass */
1352 printf ("token: \"%s\"\n", token
);
1355 /* find macros in this token and replace them */
1356 process_macros (token
, finaltoken
);
1358 /* Extract arguments */
1359 if ((argc
= parse_line (finaltoken
, argv
)) == 0) {
1360 rc
= -1; /* no command at all */
1364 /* Look up command in command table */
1365 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
1366 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
1367 rc
= -1; /* give up after bad command */
1371 /* found - check max args */
1372 if (argc
> cmdtp
->maxargs
) {
1373 printf ("Usage:\n%s\n", cmdtp
->usage
);
1378 #if defined(CONFIG_CMD_BOOTD)
1379 /* avoid "bootd" recursion */
1380 if (cmdtp
->cmd
== do_bootd
) {
1382 printf ("[%s]\n", finaltoken
);
1384 if (flag
& CMD_FLAG_BOOTD
) {
1385 puts ("'bootd' recursion detected\n");
1389 flag
|= CMD_FLAG_BOOTD
;
1394 /* OK - call function to do the command */
1395 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
1399 repeatable
&= cmdtp
->repeatable
;
1401 /* Did the user stop this? */
1403 return -1; /* if stopped then not repeatable */
1406 return rc
? rc
: repeatable
;
1409 /****************************************************************************/
1411 #if defined(CONFIG_CMD_RUN)
1412 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
1417 printf ("Usage:\n%s\n", cmdtp
->usage
);
1421 for (i
=1; i
<argc
; ++i
) {
1424 if ((arg
= getenv (argv
[i
])) == NULL
) {
1425 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1428 #ifndef CONFIG_SYS_HUSH_PARSER
1429 if (run_command (arg
, flag
) == -1)
1432 if (parse_string_outer(arg
,
1433 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)