3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <cmd_nvedit.h>
30 #include <cmd_bootm.h>
32 #if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
33 #include <cmd_boot.h> /* for do_reset() prototype */
36 #ifdef CFG_HUSH_PARSER
40 #define MAX_DELAY_STOP_STR 32
42 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
);
43 static int parse_line (char *, char *[]);
44 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
45 static int abortboot(int);
50 char console_buffer
[CFG_CBSIZE
]; /* console I/O buffer */
52 static char erase_seq
[] = "\b \b"; /* erase sequence */
53 static char tab_seq
[] = " "; /* used to expand TABs */
55 #ifdef CONFIG_BOOT_RETRY_TIME
56 static uint64_t endtime
= 0; /* must be set, default is instant timeout */
57 static int retry_time
= -1; /* -1 so can call readline before main_loop */
60 #define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
62 #ifndef CONFIG_BOOT_RETRY_MIN
63 #define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
66 #ifdef CONFIG_MODEM_SUPPORT
68 extern void mdm_init(void); /* defined in board.c */
71 /***************************************************************************
72 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
73 * returns: 0 - no key string, allow autoboot
74 * 1 - got key string, abort
76 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
77 # if defined(CONFIG_AUTOBOOT_KEYED)
78 static __inline__
int abortboot(int bootdelay
)
81 uint64_t etime
= endtick(bootdelay
);
90 { str
: getenv ("bootdelaykey"), retry
: 1 },
91 { str
: getenv ("bootdelaykey2"), retry
: 1 },
92 { str
: getenv ("bootstopkey"), retry
: 0 },
93 { str
: getenv ("bootstopkey2"), retry
: 0 },
96 char presskey
[MAX_DELAY_STOP_STR
];
97 u_int presskey_len
= 0;
98 u_int presskey_max
= 0;
101 # ifdef CONFIG_AUTOBOOT_PROMPT
102 printf (CONFIG_AUTOBOOT_PROMPT
, bootdelay
);
105 # ifdef CONFIG_AUTOBOOT_DELAY_STR
106 if (delaykey
[0].str
== NULL
)
107 delaykey
[0].str
= CONFIG_AUTOBOOT_DELAY_STR
;
109 # ifdef CONFIG_AUTOBOOT_DELAY_STR2
110 if (delaykey
[1].str
== NULL
)
111 delaykey
[1].str
= CONFIG_AUTOBOOT_DELAY_STR2
;
113 # ifdef CONFIG_AUTOBOOT_STOP_STR
114 if (delaykey
[2].str
== NULL
)
115 delaykey
[2].str
= CONFIG_AUTOBOOT_STOP_STR
;
117 # ifdef CONFIG_AUTOBOOT_STOP_STR2
118 if (delaykey
[3].str
== NULL
)
119 delaykey
[3].str
= CONFIG_AUTOBOOT_STOP_STR2
;
122 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
123 delaykey
[i
].len
= delaykey
[i
].str
== NULL
?
124 0 : strlen (delaykey
[i
].str
);
125 delaykey
[i
].len
= delaykey
[i
].len
> MAX_DELAY_STOP_STR
?
126 MAX_DELAY_STOP_STR
: delaykey
[i
].len
;
128 presskey_max
= presskey_max
> delaykey
[i
].len
?
129 presskey_max
: delaykey
[i
].len
;
132 printf("%s key:<%s>\n",
133 delaykey
[i
].retry
? "delay" : "stop",
134 delaykey
[i
].str
? delaykey
[i
].str
: "NULL");
138 /* In order to keep up with incoming data, check timeout only
141 while (!abort
&& get_ticks() <= etime
) {
142 for (i
= 0; i
< sizeof(delaykey
) / sizeof(delaykey
[0]); i
++) {
143 if (delaykey
[i
].len
> 0 &&
144 presskey_len
>= delaykey
[i
].len
&&
145 memcmp (presskey
+ presskey_len
- delaykey
[i
].len
,
147 delaykey
[i
].len
) == 0) {
149 printf("got %skey\n",
150 delaykey
[i
].retry
? "delay" : "stop");
153 # ifdef CONFIG_BOOT_RETRY_TIME
154 /* don't retry auto boot */
155 if (! delaykey
[i
].retry
)
163 if (presskey_len
< presskey_max
) {
164 presskey
[presskey_len
++] = getc();
167 for (i
= 0; i
< presskey_max
- 1; i
++)
168 presskey
[i
] = presskey
[i
+ 1];
170 presskey
[i
] = getc();
176 printf("key timeout\n");
182 # else /* !defined(CONFIG_AUTOBOOT_KEYED) */
184 #ifdef CONFIG_MENUKEY
185 static int menukey
= 0;
188 static __inline__
int abortboot(int bootdelay
)
192 #ifdef CONFIG_MENUPROMPT
193 printf(CONFIG_MENUPROMPT
, bootdelay
);
195 printf("Hit any key to stop autoboot: %2d ", bootdelay
);
198 #if defined CONFIG_ZERO_BOOTDELAY_CHECK
200 * Check if key already pressed
201 * Don't check if bootdelay < 0
203 if (bootdelay
>= 0) {
204 if (tstc()) { /* we got a key press */
205 (void) getc(); /* consume input */
206 printf ("\b\b\b 0\n");
207 return 1; /* don't auto boot */
212 while (bootdelay
> 0) {
216 /* delay 100 * 10ms */
217 for (i
=0; !abort
&& i
<100; ++i
) {
218 if (tstc()) { /* we got a key press */
219 abort
= 1; /* don't auto boot */
220 bootdelay
= 0; /* no more delay */
221 # ifdef CONFIG_MENUKEY
224 (void) getc(); /* consume input */
231 printf ("\b\b\b%2d ", bootdelay
);
238 # endif /* CONFIG_AUTOBOOT_KEYED */
239 #endif /* CONFIG_BOOTDELAY >= 0 */
241 /****************************************************************************/
243 void main_loop (void)
245 #ifndef CFG_HUSH_PARSER
246 static char lastcommand
[CFG_CBSIZE
] = { 0, };
252 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
256 #ifdef CONFIG_PREBOOT
260 #if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
261 ulong bmp
= 0; /* default bitmap */
262 extern int trab_vfd (ulong bitmap
);
264 #ifdef CONFIG_MODEM_SUPPORT
266 bmp
= 1; /* alternate bitmap */
269 #endif /* CONFIG_VFD && VFD_TEST_LOGO */
271 #ifdef CONFIG_MODEM_SUPPORT
272 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init
);
274 uchar
*str
= strdup(getenv("mdm_cmd"));
275 setenv ("preboot", str
); /* set or delete definition */
278 mdm_init(); /* wait for modem connection */
280 #endif /* CONFIG_MODEM_SUPPORT */
282 #ifdef CONFIG_VERSION_VARIABLE
284 extern char version_string
[];
285 char *str
= getenv("ver");
288 setenv ("ver", version_string
); /* set version variable */
290 #endif /* CONFIG_VERSION_VARIABLE */
292 #ifdef CFG_HUSH_PARSER
293 u_boot_hush_start ();
296 #ifdef CONFIG_PREBOOT
297 if ((p
= getenv ("preboot")) != NULL
) {
298 # ifdef CONFIG_AUTOBOOT_KEYED
299 int prev
= disable_ctrlc(1); /* disable Control C checking */
302 # ifndef CFG_HUSH_PARSER
305 parse_string_outer(p
, FLAG_PARSE_SEMICOLON
|
306 FLAG_EXIT_FROM_LOOP
);
309 # ifdef CONFIG_AUTOBOOT_KEYED
310 disable_ctrlc(prev
); /* restore Control C checking */
313 #endif /* CONFIG_PREBOOT */
315 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
316 s
= getenv ("bootdelay");
317 bootdelay
= s
? (int)simple_strtol(s
, NULL
, 10) : CONFIG_BOOTDELAY
;
319 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay
);
321 # ifdef CONFIG_BOOT_RETRY_TIME
322 s
= getenv ("bootretry");
324 retry_time
= (int)simple_strtoul(s
, NULL
, 10);
326 retry_time
= CONFIG_BOOT_RETRY_TIME
;
327 if (retry_time
>= 0 && retry_time
< CONFIG_BOOT_RETRY_MIN
)
328 retry_time
= CONFIG_BOOT_RETRY_MIN
;
329 # endif /* CONFIG_BOOT_RETRY_TIME */
331 s
= getenv ("bootcmd");
333 debug ("### main_loop: bootcmd=\"%s\"\n", s
? s
: "<UNDEFINED>");
335 if (bootdelay
>= 0 && s
&& !abortboot (bootdelay
)) {
336 # ifdef CONFIG_AUTOBOOT_KEYED
337 int prev
= disable_ctrlc(1); /* disable Control C checking */
340 # ifndef CFG_HUSH_PARSER
343 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
344 FLAG_EXIT_FROM_LOOP
);
347 # ifdef CONFIG_AUTOBOOT_KEYED
348 disable_ctrlc(prev
); /* restore Control C checking */
352 # ifdef CONFIG_MENUKEY
353 if (menukey
== CONFIG_MENUKEY
) {
354 s
= getenv("menucmd");
356 # ifndef CFG_HUSH_PARSER
357 run_command (s
, bd
, 0);
359 parse_string_outer(s
, FLAG_PARSE_SEMICOLON
|
360 FLAG_EXIT_FROM_LOOP
);
364 #endif /* CONFIG_MENUKEY */
365 #endif /* CONFIG_BOOTDELAY */
367 #ifdef CONFIG_AMIGAONEG3SE
369 extern void video_banner(void);
375 * Main Loop for Monitor Command Processing
377 #ifdef CFG_HUSH_PARSER
379 /* This point is never reached */
383 #ifdef CONFIG_BOOT_RETRY_TIME
385 /* Saw enough of a valid command to
386 * restart the timeout.
391 len
= readline (CFG_PROMPT
);
393 flag
= 0; /* assume no special flags for now */
395 strcpy (lastcommand
, console_buffer
);
397 flag
|= CMD_FLAG_REPEAT
;
398 #ifdef CONFIG_BOOT_RETRY_TIME
399 else if (len
== -2) {
400 /* -2 means timed out, retry autoboot
402 printf("\nTimed out waiting for command\n");
403 # ifdef CONFIG_RESET_TO_RETRY
404 /* Reinit board to run initialization code again */
405 do_reset (NULL
, 0, 0, NULL
);
407 return; /* retry autoboot */
413 printf ("<INTERRUPT>\n");
415 rc
= run_command (lastcommand
, flag
);
418 /* invalid command or not repeatable, forget it */
422 #endif /*CFG_HUSH_PARSER*/
425 /***************************************************************************
426 * reset command line timeout to retry_time seconds
428 #ifdef CONFIG_BOOT_RETRY_TIME
429 void reset_cmd_timeout(void)
431 endtime
= endtick(retry_time
);
435 /****************************************************************************/
438 * Prompt for input and read a line.
439 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
440 * time out when time goes past endtime (timebase time in ticks).
441 * Return: number of read characters
445 int readline (const char *const prompt
)
447 char *p
= console_buffer
;
448 int n
= 0; /* buffer index */
449 int plen
= 0; /* prompt length */
450 int col
; /* output column cnt */
455 plen
= strlen (prompt
);
461 #ifdef CONFIG_BOOT_RETRY_TIME
462 while (!tstc()) { /* while no incoming data */
463 if (retry_time
>= 0 && get_ticks() > endtime
)
464 return (-2); /* timed out */
467 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
469 #ifdef CONFIG_SHOW_ACTIVITY
471 extern void show_activity(int arg
);
478 * Special character handling
481 case '\r': /* Enter */
485 return (p
- console_buffer
);
487 case 0x03: /* ^C - break */
488 console_buffer
[0] = '\0'; /* discard input */
491 case 0x15: /* ^U - erase line */
500 case 0x17: /* ^W - erase word */
501 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
502 while ((n
> 0) && (*p
!= ' ')) {
503 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
507 case 0x08: /* ^H - backspace */
508 case 0x7F: /* DEL - backspace */
509 p
=delete_char(console_buffer
, p
, &col
, &n
, plen
);
514 * Must be a normal character then
516 if (n
< CFG_CBSIZE
-2) {
517 if (c
== '\t') { /* expand TABs */
518 puts (tab_seq
+(col
&07));
521 ++col
; /* echo input */
526 } else { /* Buffer full */
533 /****************************************************************************/
535 static char * delete_char (char *buffer
, char *p
, int *colp
, int *np
, int plen
)
543 if (*(--p
) == '\t') { /* will retype the whole line */
544 while (*colp
> plen
) {
548 for (s
=buffer
; s
<p
; ++s
) {
550 puts (tab_seq
+((*colp
) & 07));
551 *colp
+= 8 - ((*colp
) & 07);
565 /****************************************************************************/
567 int parse_line (char *line
, char *argv
[])
572 printf ("parse_line: \"%s\"\n", line
);
574 while (nargs
< CFG_MAXARGS
) {
576 /* skip any white space */
577 while ((*line
== ' ') || (*line
== '\t')) {
581 if (*line
== '\0') { /* end of line, no more args */
584 printf ("parse_line: nargs=%d\n", nargs
);
589 argv
[nargs
++] = line
; /* begin of argument string */
591 /* find end of string */
592 while (*line
&& (*line
!= ' ') && (*line
!= '\t')) {
596 if (*line
== '\0') { /* end of line, no more args */
599 printf ("parse_line: nargs=%d\n", nargs
);
604 *line
++ = '\0'; /* terminate current arg */
607 printf ("** Too many args (max. %d) **\n", CFG_MAXARGS
);
610 printf ("parse_line: nargs=%d\n", nargs
);
615 /****************************************************************************/
617 static void process_macros (const char *input
, char *output
)
620 const char *varname_start
= NULL
;
621 int inputcnt
= strlen (input
);
622 int outputcnt
= CFG_CBSIZE
;
623 int state
= 0; /* 0 = waiting for '$' */
624 /* 1 = waiting for '(' */
625 /* 2 = waiting for ')' */
626 /* 3 = waiting for ''' */
628 char *output_start
= output
;
630 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen(input
), input
);
633 prev
= '\0'; /* previous character */
635 while (inputcnt
&& outputcnt
) {
640 /* remove one level of escape characters */
641 if ((c
== '\\') && (prev
!= '\\')) {
650 case 0: /* Waiting for (unescaped) $ */
651 if ((c
== '\'') && (prev
!= '\\')) {
655 if ((c
== '$') && (prev
!= '\\')) {
662 case 1: /* Waiting for ( */
665 varname_start
= input
;
677 case 2: /* Waiting for ) */
680 char envname
[CFG_CBSIZE
], *envval
;
681 int envcnt
= input
-varname_start
-1; /* Varname # of chars */
683 /* Get the varname */
684 for (i
= 0; i
< envcnt
; i
++) {
685 envname
[i
] = varname_start
[i
];
690 envval
= getenv (envname
);
692 /* Copy into the line if it exists */
694 while ((*envval
) && outputcnt
) {
695 *(output
++) = *(envval
++);
698 /* Look for another '$' */
702 case 3: /* Waiting for ' */
703 if ((c
== '\'') && (prev
!= '\\')) {
718 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
719 strlen(output_start
), output_start
);
723 /****************************************************************************
725 * 1 - command executed, repeatable
726 * 0 - command executed but not repeatable, interrupted commands are
727 * always considered not repeatable
728 * -1 - not executed (unrecognized, bootd recursion or too many args)
729 * (If cmd is NULL or "" or longer than CFG_CBSIZE-1 it is
730 * considered unrecognized)
734 * We must create a temporary copy of the command since the command we get
735 * may be the result from getenv(), which returns a pointer directly to
736 * the environment data, which may change magicly when the command we run
737 * creates or modifies environment variables (like "bootp" does).
740 int run_command (const char *cmd
, int flag
)
743 char cmdbuf
[CFG_CBSIZE
]; /* working copy of cmd */
744 char *token
; /* start of token in cmdbuf */
745 char *sep
; /* end of token (separator) in cmdbuf */
746 char finaltoken
[CFG_CBSIZE
];
748 char *argv
[CFG_MAXARGS
+ 1]; /* NULL terminated */
754 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd
);
755 puts (cmd
? cmd
: "NULL"); /* use puts - string may be loooong */
759 clear_ctrlc(); /* forget any previous Control C */
762 return -1; /* empty command */
765 if (strlen(cmd
) >= CFG_CBSIZE
) {
766 puts ("## Command too long!\n");
770 strcpy (cmdbuf
, cmd
);
772 /* Process separators and check for invalid
773 * repeatable commands
777 printf ("[PROCESS_SEPARATORS] %s\n", cmd
);
782 * Find separator, or string end
783 * Allow simple escape of ';' by writing "\;"
785 for (inquotes
= 0, sep
= str
; *sep
; sep
++) {
791 (*sep
== ';') && /* separator */
792 ( sep
!= str
) && /* past string start */
793 (*(sep
-1) != '\\')) /* and NOT escaped */
798 * Limit the token to data between separators
802 str
= sep
+ 1; /* start of command for next pass */
806 str
= sep
; /* no more commands for next pass */
808 printf ("token: \"%s\"\n", token
);
811 /* find macros in this token and replace them */
812 process_macros (token
, finaltoken
);
814 /* Extract arguments */
815 argc
= parse_line (finaltoken
, argv
);
817 /* Look up command in command table */
818 if ((cmdtp
= find_cmd(argv
[0])) == NULL
) {
819 printf ("Unknown command '%s' - try 'help'\n", argv
[0]);
820 rc
= -1; /* give up after bad command */
824 /* found - check max args */
825 if (argc
> cmdtp
->maxargs
) {
826 printf ("Usage:\n%s\n", cmdtp
->usage
);
831 #if (CONFIG_COMMANDS & CFG_CMD_BOOTD)
832 /* avoid "bootd" recursion */
833 if (cmdtp
->cmd
== do_bootd
) {
835 printf ("[%s]\n", finaltoken
);
837 if (flag
& CMD_FLAG_BOOTD
) {
838 printf ("'bootd' recursion detected\n");
843 flag
|= CMD_FLAG_BOOTD
;
845 #endif /* CFG_CMD_BOOTD */
847 /* OK - call function to do the command */
848 if ((cmdtp
->cmd
) (cmdtp
, flag
, argc
, argv
) != 0) {
852 repeatable
&= cmdtp
->repeatable
;
854 /* Did the user stop this? */
856 return 0; /* if stopped then not repeatable */
859 return rc
? rc
: repeatable
;
862 /****************************************************************************/
864 #if (CONFIG_COMMANDS & CFG_CMD_RUN)
865 int do_run (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
870 printf ("Usage:\n%s\n", cmdtp
->usage
);
874 for (i
=1; i
<argc
; ++i
) {
877 if ((arg
= getenv (argv
[i
])) == NULL
) {
878 printf ("## Error: \"%s\" not defined\n", argv
[i
]);
881 #ifndef CFG_HUSH_PARSER
882 if (run_command (arg
, flag
) == -1)
885 if (parse_string_outer(arg
,
886 FLAG_PARSE_SEMICOLON
| FLAG_EXIT_FROM_LOOP
) != 0)
892 #endif /* CFG_CMD_RUN */