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 CFG_HUSH_PARSER
43 #ifdef CONFIG_SILENT_CONSOLE
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
[]);
60 #define MAX_DELAY_STOP_STR 32
62 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
63 static int abortboot(int);
68 char console_buffer
[CFG_CBSIZE
]; /* console I/O buffer */
70 #ifndef CONFIG_CMDLINE_EDITING
71 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
72 static char erase_seq
[] = "\b \b"; /* erase sequence */
73 static char tab_seq
[] = " "; /* used to expand TABs */
74 #endif /* CONFIG_CMDLINE_EDITING */
76 #ifdef CONFIG_BOOT_RETRY_TIME
77 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
78 static int retry_time
= -1; /* -1 so can call readline before main_loop */
81 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
83 #ifndef CONFIG_BOOT_RETRY_MIN
84 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
87 #ifdef CONFIG_MODEM_SUPPORT
89 extern void mdm_init(void); /* defined in board.c */
92 /***************************************************************************
93 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
94 * returns: 0 - no key string, allow autoboot
95 * 1 - got key string, abort
97 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
98 # if defined(CONFIG_AUTOBOOT_KEYED)
99 static __inline__
int abortboot(int bootdelay
)
102 uint64_t etime
= endtick(bootdelay
);
109 { str
: getenv ("bootdelaykey"), retry
: 1 },
110 { str
: getenv ("bootdelaykey2"), retry
: 1 },
111 { str
: getenv ("bootstopkey"), retry
: 0 },
112 { str
: getenv ("bootstopkey2"), retry
: 0 },
115 char presskey
[MAX_DELAY_STOP_STR
];
116 u_int presskey_len
= 0;
117 u_int presskey_max
= 0;
120 # ifdef CONFIG_AUTOBOOT_PROMPT
121 printf(CONFIG_AUTOBOOT_PROMPT
, bootdelay
);
124 # ifdef CONFIG_AUTOBOOT_DELAY_STR
125 if (delaykey
[0].str
== NULL
)
126 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
128 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
129 if (delaykey
[1].str
== NULL
)
130 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
132 # ifdef CONFIG_AUTOBOOT_STOP_STR
133 if (delaykey
[2].str
== NULL
)
134 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
136 # ifdef CONFIG_AUTOBOOT_STOP_STR2
137 if (delaykey
[3].str
== NULL
)
138 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
141 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
142 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
143 0 : strlen (delaykey
[i
].str
);
144 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
145 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
147 presskey_max
= presskey_max
> delaykey
[i
].len
?
148 presskey_max
: delaykey
[i
].len
;
151 printf("%s key:<%s>\n",
152 delaykey
[i
].retry
? "delay" : "stop",
153 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
157 /* In order to keep up with incoming data, check timeout only
160 while (!abort
&& get_ticks() <= etime
) {
161 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
162 if (delaykey
[i
].len
> 0 &&
163 presskey_len
>= delaykey
[i
].len
&&
164 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
166 delaykey
[i
].len
) == 0) {
168 printf("got %skey\n",
169 delaykey
[i
].retry
? "delay" : "stop");
172 # ifdef CONFIG_BOOT_RETRY_TIME
173 /* don't retry auto boot */
174 if (! delaykey
[i
].retry
)
182 if (presskey_len
< presskey_max
) {
183 presskey
[presskey_len
++] = getc();
186 for (i
= 0; i
< presskey_max
- 1; i
++)
187 presskey
[i
] = presskey
[i
+ 1];
189 presskey
[i
] = getc();
195 puts("key timeout\n");
198 #ifdef CONFIG_SILENT_CONSOLE
200 gd
->flags
&= ~GD_FLG_SILENT
;
206 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
208 #ifdef CONFIG_MENUKEY
209 static int menukey
= 0;
212 static __inline__
int abortboot(int bootdelay
)
216 #ifdef CONFIG_MENUPROMPT
217 printf(CONFIG_MENUPROMPT
, bootdelay
);
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 CFG_HUSH_PARSER
275 static char lastcommand
[CFG_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 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
296 ulong bmp
= 0; /* default bitmap */
297 extern int trab_vfd (ulong bitmap
);
299 #ifdef CONFIG_MODEM_SUPPORT
301 bmp
= 1; /* alternate bitmap */
304 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
306 #ifdef CONFIG_BOOTCOUNT_LIMIT
307 bootcount
= bootcount_load();
309 bootcount_store (bootcount
);
310 sprintf (bcs_set
, "%lu", bootcount
);
311 setenv ("bootcount", bcs_set
);
312 bcs
= getenv ("bootlimit");
313 bootlimit
= bcs
? simple_strtoul (bcs
, NULL
, 10) : 0;
314 #endif /* CONFIG_BOOTCOUNT_LIMIT */
316 #ifdef CONFIG_MODEM_SUPPORT
317 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
319 char *str
= strdup(getenv("mdm_cmd"));
320 setenv ("preboot", str
); /* set or delete definition */
323 mdm_init(); /* wait for modem connection */
325 #endif /* CONFIG_MODEM_SUPPORT */
327 #ifdef CONFIG_VERSION_VARIABLE
329 extern char version_string
[];
331 setenv ("ver", version_string
); /* set version variable */
333 #endif /* CONFIG_VERSION_VARIABLE */
335 #ifdef CFG_HUSH_PARSER
336 u_boot_hush_start ();
339 #ifdef CONFIG_AUTO_COMPLETE
340 install_auto_complete();
343 #ifdef CONFIG_PREBOOT
344 if ((p
= getenv ("preboot")) != NULL
) {
345 # ifdef CONFIG_AUTOBOOT_KEYED
346 int prev
= disable_ctrlc(1); /* disable Control C checking */
349 # ifndef CFG_HUSH_PARSER
352 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
353 FLAG_EXIT_FROM_LOOP
);
356 # ifdef CONFIG_AUTOBOOT_KEYED
357 disable_ctrlc(prev
); /* restore Control C checking */
360 #endif /* CONFIG_PREBOOT */
362 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
363 s
= getenv ("bootdelay");
364 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
366 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
368 # ifdef CONFIG_BOOT_RETRY_TIME
370 # endif /* CONFIG_BOOT_RETRY_TIME */
372 #ifdef CONFIG_BOOTCOUNT_LIMIT
373 if (bootlimit
&& (bootcount
> bootlimit
)) {
374 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
375 (unsigned)bootlimit
);
376 s
= getenv ("altbootcmd");
379 #endif /* CONFIG_BOOTCOUNT_LIMIT */
380 s
= getenv ("bootcmd");
382 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
384 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
385 # ifdef CONFIG_AUTOBOOT_KEYED
386 int prev
= disable_ctrlc(1); /* disable Control C checking */
389 # ifndef CFG_HUSH_PARSER
392 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
393 FLAG_EXIT_FROM_LOOP
);
396 # ifdef CONFIG_AUTOBOOT_KEYED
397 disable_ctrlc(prev
); /* restore Control C checking */
401 # ifdef CONFIG_MENUKEY
402 if (menukey
== CONFIG_MENUKEY
) {
403 s
= getenv("menucmd");
405 # ifndef CFG_HUSH_PARSER
408 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
409 FLAG_EXIT_FROM_LOOP
);
413 #endif /* CONFIG_MENUKEY */
414 #endif /* CONFIG_BOOTDELAY */
416 #ifdef CONFIG_AMIGAONEG3SE
418 extern void video_banner(void);
424 * Main Loop for Monitor Command Processing
426 #ifdef CFG_HUSH_PARSER
428 /* This point is never reached */
432 #ifdef CONFIG_BOOT_RETRY_TIME
434 /* Saw enough of a valid command to
435 * restart the timeout.
440 len
= readline (CFG_PROMPT
);
442 flag
= 0; /* assume no special flags for now */
444 strcpy (lastcommand
, console_buffer
);
446 flag
|= CMD_FLAG_REPEAT
;
447 #ifdef CONFIG_BOOT_RETRY_TIME
448 else if (len
== -2) {
449 /* -2 means timed out, retry autoboot
451 puts ("\nTimed out waiting for command\n");
452 # ifdef CONFIG_RESET_TO_RETRY
453 /* Reinit board to run initialization code again */
454 do_reset (NULL
, 0, 0, NULL
);
456 return; /* retry autoboot */
462 puts ("<INTERRUPT>\n");
464 rc
= run_command (lastcommand
, flag
);
467 /* invalid command or not repeatable, forget it */
471 #endif /*CFG_HUSH_PARSER*/
474 #ifdef CONFIG_BOOT_RETRY_TIME
475 /***************************************************************************
476 * initialize command line timeout
478 void init_cmd_timeout(void)
480 char *s
= getenv ("bootretry");
483 retry_time
= (int)simple_strtol(s
, NULL
, 10);
485 retry_time
= CONFIG_BOOT_RETRY_TIME
;
487 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
488 retry_time
= CONFIG_BOOT_RETRY_MIN
;
491 /***************************************************************************
492 * reset command line timeout to retry_time seconds
494 void reset_cmd_timeout(void)
496 endtime
= endtick(retry_time
);
500 #ifdef CONFIG_CMDLINE_EDITING
503 * cmdline-editing related codes from vivi.
504 * Author: Janghoon Lyu <nandy@mizi.com>
507 #define putnstr(str,n) do { \
508 printf ("%.*s", n, str); \
511 #define CTL_CH(c) ((c) - 'a' + 1)
513 #define MAX_CMDBUF_SIZE 256
515 #define CTL_BACKSPACE ('\b')
516 #define DEL ((char)255)
517 #define DEL7 ((char)127)
518 #define CREAD_HIST_CHAR ('!')
520 #define getcmd_putch(ch) putc(ch)
521 #define getcmd_getch() getc()
522 #define getcmd_cbeep() getcmd_putch('\a')
525 #define HIST_SIZE MAX_CMDBUF_SIZE
527 static int hist_max
= 0;
528 static int hist_add_idx
= 0;
529 static int hist_cur
= -1;
530 unsigned hist_num
= 0;
532 char* hist_list
[HIST_MAX
];
533 char hist_lines
[HIST_MAX
][HIST_SIZE
];
535 #define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
537 static void hist_init(void)
546 for (i
= 0; i
< HIST_MAX
; i
++) {
547 hist_list
[i
] = hist_lines
[i
];
548 hist_list
[i
][0] = '\0';
552 static void cread_add_to_hist(char *line
)
554 strcpy(hist_list
[hist_add_idx
], line
);
556 if (++hist_add_idx
>= HIST_MAX
)
559 if (hist_add_idx
> hist_max
)
560 hist_max
= hist_add_idx
;
565 static char* hist_prev(void)
577 if (hist_cur
== hist_add_idx
) {
581 ret
= hist_list
[hist_cur
];
586 static char* hist_next(void)
593 if (hist_cur
== hist_add_idx
)
596 if (++hist_cur
> hist_max
)
599 if (hist_cur
== hist_add_idx
) {
602 ret
= hist_list
[hist_cur
];
607 #ifndef CONFIG_CMDLINE_EDITING
608 static void cread_print_hist_list(void)
613 n
= hist_num
- hist_max
;
615 i
= hist_add_idx
+ 1;
619 if (i
== hist_add_idx
)
621 printf("%s\n", hist_list
[i
]);
626 #endif /* CONFIG_CMDLINE_EDITING */
628 #define BEGINNING_OF_LINE() { \
630 getcmd_putch(CTL_BACKSPACE); \
635 #define ERASE_TO_EOL() { \
636 if (num < eol_num) { \
638 for (tmp = num; tmp < eol_num; tmp++) \
640 while (tmp-- > num) \
641 getcmd_putch(CTL_BACKSPACE); \
646 #define REFRESH_TO_EOL() { \
647 if (num < eol_num) { \
648 wlen = eol_num - num; \
649 putnstr(buf + num, wlen); \
654 static void cread_add_char(char ichar
, int insert
, unsigned long *num
,
655 unsigned long *eol_num
, char *buf
, unsigned long len
)
660 if (insert
|| *num
== *eol_num
) {
661 if (*eol_num
> len
- 1) {
669 wlen
= *eol_num
- *num
;
671 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
675 putnstr(buf
+ *num
, wlen
);
678 getcmd_putch(CTL_BACKSPACE
);
681 /* echo the character */
684 putnstr(buf
+ *num
, wlen
);
689 static void cread_add_str(char *str
, int strsize
, int insert
, unsigned long *num
,
690 unsigned long *eol_num
, char *buf
, unsigned long len
)
693 cread_add_char(*str
, insert
, num
, eol_num
, buf
, len
);
698 static int cread_line(const char *const prompt
, char *buf
, unsigned int *len
)
700 unsigned long num
= 0;
701 unsigned long eol_num
= 0;
712 #ifdef CONFIG_BOOT_RETRY_TIME
713 while (!tstc()) { /* while no incoming data */
714 if (retry_time
>= 0 && get_ticks() > endtime
)
715 return (-2); /* timed out */
719 ichar
= getcmd_getch();
721 if ((ichar
== '\n') || (ichar
== '\r')) {
727 * handle standard linux xterm esc sequences for arrow key, etc.
732 esc_save
[esc_len
] = ichar
;
735 cread_add_str(esc_save
, esc_len
, insert
,
736 &num
, &eol_num
, buf
, *len
);
744 case 'D': /* <- key */
748 case 'C': /* -> key */
751 break; /* pass off to ^F handler */
752 case 'H': /* Home key */
755 break; /* pass off to ^A handler */
756 case 'A': /* up arrow */
759 break; /* pass off to ^P handler */
760 case 'B': /* down arrow */
763 break; /* pass off to ^N handler */
765 esc_save
[esc_len
++] = ichar
;
766 cread_add_str(esc_save
, esc_len
, insert
,
767 &num
, &eol_num
, buf
, *len
);
776 esc_save
[esc_len
] = ichar
;
779 puts("impossible condition #876\n");
787 case CTL_CH('c'): /* ^C - break */
788 *buf
= '\0'; /* discard input */
792 getcmd_putch(buf
[num
]);
798 getcmd_putch(CTL_BACKSPACE
);
804 wlen
= eol_num
- num
- 1;
806 memmove(&buf
[num
], &buf
[num
+1], wlen
);
807 putnstr(buf
+ num
, wlen
);
812 getcmd_putch(CTL_BACKSPACE
);
835 wlen
= eol_num
- num
;
837 memmove(&buf
[num
], &buf
[num
+1], wlen
);
838 getcmd_putch(CTL_BACKSPACE
);
839 putnstr(buf
+ num
, wlen
);
842 getcmd_putch(CTL_BACKSPACE
);
854 if (ichar
== CTL_CH('p'))
864 /* nuke the current line */
868 /* erase to end of line */
871 /* copy new line into place and display */
873 eol_num
= strlen(buf
);
877 #ifdef CONFIG_AUTO_COMPLETE
881 /* do not autocomplete when in the middle */
888 col
= strlen(prompt
) + eol_num
;
890 if (cmd_auto_complete(prompt
, buf
, &num2
, &col
)) {
899 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, *len
);
904 buf
[eol_num
] = '\0'; /* lose the newline */
906 if (buf
[0] && buf
[0] != CREAD_HIST_CHAR
)
907 cread_add_to_hist(buf
);
908 hist_cur
= hist_add_idx
;
913 #endif /* CONFIG_CMDLINE_EDITING */
915 /****************************************************************************/
918 * Prompt for input and read a line.
919 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
920 * time out when time goes past endtime (timebase time in ticks).
921 * Return: number of read characters
925 int readline (const char *const prompt
)
927 return readline_into_buffer(prompt
, console_buffer
);
931 int readline_into_buffer (const char *const prompt
, char * buffer
)
934 #ifdef CONFIG_CMDLINE_EDITING
935 unsigned int len
=MAX_CMDBUF_SIZE
;
937 static int initted
= 0;
946 rc
= cread_line(prompt
, p
, &len
);
947 return rc
< 0 ? rc
: len
;
950 int n
= 0; /* buffer index */
951 int plen
= 0; /* prompt length */
952 int col
; /* output column cnt */
957 plen
= strlen (prompt
);
963 #ifdef CONFIG_BOOT_RETRY_TIME
964 while (!tstc()) { /* while no incoming data */
965 if (retry_time
>= 0 && get_ticks() > endtime
)
966 return (-2); /* timed out */
969 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
971 #ifdef CONFIG_SHOW_ACTIVITY
973 extern void show_activity(int arg
);
980 * Special character handling
983 case '\r': /* Enter */
992 case 0x03: /* ^C - break */
993 p_buf
[0] = '\0'; /* discard input */
996 case 0x15: /* ^U - erase line */
1005 case 0x17: /* ^W - erase word */
1006 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1007 while ((n
> 0) && (*p
!= ' ')) {
1008 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1012 case 0x08: /* ^H - backspace */
1013 case 0x7F: /* DEL - backspace */
1014 p
=delete_char(p_buf
, p
, &col
, &n
, plen
);
1019 * Must be a normal character then
1021 if (n
< CFG_CBSIZE
-2) {
1022 if (c
== '\t') { /* expand TABs */
1023 #ifdef CONFIG_AUTO_COMPLETE
1024 /* if auto completion triggered just continue */
1026 if (cmd_auto_complete(prompt
, console_buffer
, &n
, &col
)) {
1027 p
= p_buf
+ n
; /* reset */
1031 puts (tab_seq
+(col
&07));
1032 col
+= 8 - (col
&07);
1034 ++col
; /* echo input */
1039 } else { /* Buffer full */
1044 #endif /* CONFIG_CMDLINE_EDITING */
1047 /****************************************************************************/
1049 #ifndef CONFIG_CMDLINE_EDITING
1050 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
1058 if (*(--p
) == '\t') { /* will retype the whole line */
1059 while (*colp
> plen
) {
1063 for (s
=buffer
; s
<p
; ++s
) {
1065 puts (tab_seq
+((*colp
) & 07));
1066 *colp
+= 8 - ((*colp
) & 07);
1079 #endif /* CONFIG_CMDLINE_EDITING */
1081 /****************************************************************************/
1083 int parse_line (char *line
, char *argv
[])
1088 printf ("parse_line: \"%s\"\n", line
);
1090 while (nargs
< CFG_MAXARGS
) {
1092 /* skip any white space */
1093 while ((*line
== ' ') || (*line
== '\t')) {
1097 if (*line
== '\0') { /* end of line, no more args */
1100 printf ("parse_line: nargs=%d\n", nargs
);
1105 argv
[nargs
++] = line
; /* begin of argument string */
1107 /* find end of string */
1108 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
1112 if (*line
== '\0') { /* end of line, no more args */
1115 printf ("parse_line: nargs=%d\n", nargs
);
1120 *line
++ = '\0'; /* terminate current arg */
1123 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS
);
1126 printf ("parse_line: nargs=%d\n", nargs
);
1131 /****************************************************************************/
1133 static void process_macros (const char *input
, char *output
)
1136 const char *varname_start
= NULL
;
1137 int inputcnt
= strlen (input
);
1138 int outputcnt
= CFG_CBSIZE
;
1139 int state
= 0; /* 0 = waiting for '$' */
1141 /* 1 = waiting for '(' or '{' */
1142 /* 2 = waiting for ')' or '}' */
1143 /* 3 = waiting for ''' */
1145 char *output_start
= output
;
1147 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input
),
1151 prev
= '\0'; /* previous character */
1153 while (inputcnt
&& outputcnt
) {
1158 /* remove one level of escape characters */
1159 if ((c
== '\\') && (prev
!= '\\')) {
1160 if (inputcnt
-- == 0)
1168 case 0: /* Waiting for (unescaped) $ */
1169 if ((c
== '\'') && (prev
!= '\\')) {
1173 if ((c
== '$') && (prev
!= '\\')) {
1180 case 1: /* Waiting for ( */
1181 if (c
== '(' || c
== '{') {
1183 varname_start
= input
;
1195 case 2: /* Waiting for ) */
1196 if (c
== ')' || c
== '}') {
1198 char envname
[CFG_CBSIZE
], *envval
;
1199 int envcnt
= input
- varname_start
- 1; /* Varname # of chars */
1201 /* Get the varname */
1202 for (i
= 0; i
< envcnt
; i
++) {
1203 envname
[i
] = varname_start
[i
];
1208 envval
= getenv (envname
);
1210 /* Copy into the line if it exists */
1212 while ((*envval
) && outputcnt
) {
1213 *(output
++) = *(envval
++);
1216 /* Look for another '$' */
1220 case 3: /* Waiting for ' */
1221 if ((c
== '\'') && (prev
!= '\\')) {
1238 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
1239 strlen (output_start
), output_start
);
1243 /****************************************************************************
1245 * 1 - command executed, repeatable
1246 * 0 - command executed but not repeatable, interrupted commands are
1247 * always considered not repeatable
1248 * -1 - not executed (unrecognized, bootd recursion or too many args)
1249 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
1250 * considered unrecognized)
1254 * We must create a temporary copy of the command since the command we get
1255 * may be the result from getenv(), which returns a pointer directly to
1256 * the environment data, which may change magicly when the command we run
1257 * creates or modifies environment variables (like "bootp" does).
1260 int run_command (const char *cmd
, int flag
)
1263 char cmdbuf
[CFG_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
[CFG_CBSIZE
];
1268 char *argv
[CFG_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
) >= CFG_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 /* Look up command in command table */
1341 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
1342 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
1343 rc
= -1; /* give up after bad command */
1347 /* found - check max args */
1348 if (argc
> cmdtp
->maxargs
) {
1349 printf ("Usage:\n%s\n", cmdtp
->usage
);
1354 #if defined(CONFIG_CMD_BOOTD)
1355 /* avoid "bootd" recursion */
1356 if (cmdtp
->cmd
== do_bootd
) {
1358 printf ("[%s]\n", finaltoken
);
1360 if (flag
& CMD_FLAG_BOOTD
) {
1361 puts ("'bootd' recursion detected\n");
1365 flag
|= CMD_FLAG_BOOTD
;
1370 /* OK - call function to do the command */
1371 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
1375 repeatable
&= cmdtp
->repeatable
;
1377 /* Did the user stop this? */
1379 return -1; /* if stopped then not repeatable */
1382 return rc
? rc
: repeatable
;
1385 /****************************************************************************/
1387 #if defined(CONFIG_CMD_RUN)
1388 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
1393 printf ("Usage:\n%s\n", cmdtp
->usage
);
1397 for (i
=1; i
<argc
; ++i
) {
1400 if ((arg
= getenv (argv
[i
])) == NULL
) {
1401 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
1404 #ifndef CFG_HUSH_PARSER
1405 if (run_command (arg
, flag
) == -1)
1408 if (parse_string_outer(arg
,
1409 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)