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wdenkc6097192002-11-03 00:24:07 +00001/*
2 * (C) Copyright 2000
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
Wolfgang Denk501090a2006-07-21 11:33:45 +02005 * Add to readline cmdline-editing by
6 * (C) Copyright 2005
7 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
8 *
wdenkc6097192002-11-03 00:24:07 +00009 * See file CREDITS for list of people who contributed to this
10 * project.
11 *
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.
16 *
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.
21 *
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,
25 * MA 02111-1307 USA
26 */
27
wdenka6c7ad22002-12-03 21:28:10 +000028/* #define DEBUG */
29
wdenkc6097192002-11-03 00:24:07 +000030#include <common.h>
31#include <watchdog.h>
32#include <command.h>
Wolfgang Denkd9631ec2005-09-30 15:18:23 +020033#ifdef CONFIG_MODEM_SUPPORT
34#include <malloc.h> /* for free() prototype */
35#endif
wdenkc6097192002-11-03 00:24:07 +000036
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020037#ifdef CONFIG_SYS_HUSH_PARSER
wdenkc6097192002-11-03 00:24:07 +000038#include <hush.h>
39#endif
40
wdenkbdccc4f2003-08-05 17:43:17 +000041#include <post.h>
42
James Yang597f6c22008-05-05 10:22:53 -050043#if defined(CONFIG_SILENT_CONSOLE) || defined(CONFIG_POST) || defined(CONFIG_CMDLINE_EDITING)
Wolfgang Denkd87080b2006-03-31 18:32:53 +020044DECLARE_GLOBAL_DATA_PTR;
45#endif
46
Heiko Schocherfad63402007-07-13 09:54:17 +020047/*
48 * Board-specific Platform code can reimplement show_boot_progress () if needed
49 */
50void inline __show_boot_progress (int val) {}
Emil Medve5e2c08c2009-05-12 13:48:32 -050051void show_boot_progress (int val) __attribute__((weak, alias("__show_boot_progress")));
Heiko Schocherfad63402007-07-13 09:54:17 +020052
wdenk8bde7f72003-06-27 21:31:46 +000053#if defined(CONFIG_BOOT_RETRY_TIME) && defined(CONFIG_RESET_TO_RETRY)
54extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); /* for do_reset() prototype */
55#endif
56
57extern int do_bootd (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
58
Bartlomiej Sieka4bae9092008-10-01 15:26:31 +020059#if defined(CONFIG_UPDATE_TFTP)
60void update_tftp (void);
61#endif /* CONFIG_UPDATE_TFTP */
wdenk8bde7f72003-06-27 21:31:46 +000062
wdenkc6097192002-11-03 00:24:07 +000063#define MAX_DELAY_STOP_STR 32
64
wdenkc6097192002-11-03 00:24:07 +000065#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
66static int abortboot(int);
67#endif
68
69#undef DEBUG_PARSER
70
John Schmoller6475b9f2010-03-12 09:49:23 -060071char console_buffer[CONFIG_SYS_CBSIZE + 1]; /* console I/O buffer */
wdenkc6097192002-11-03 00:24:07 +000072
Stefan Roese3ca91222006-07-27 16:11:19 +020073static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen);
wdenkc6097192002-11-03 00:24:07 +000074static char erase_seq[] = "\b \b"; /* erase sequence */
75static char tab_seq[] = " "; /* used to expand TABs */
76
77#ifdef CONFIG_BOOT_RETRY_TIME
78static uint64_t endtime = 0; /* must be set, default is instant timeout */
79static int retry_time = -1; /* -1 so can call readline before main_loop */
80#endif
81
82#define endtick(seconds) (get_ticks() + (uint64_t)(seconds) * get_tbclk())
83
84#ifndef CONFIG_BOOT_RETRY_MIN
85#define CONFIG_BOOT_RETRY_MIN CONFIG_BOOT_RETRY_TIME
86#endif
87
88#ifdef CONFIG_MODEM_SUPPORT
89int do_mdm_init = 0;
90extern void mdm_init(void); /* defined in board.c */
91#endif
92
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
97 */
98#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
99# if defined(CONFIG_AUTOBOOT_KEYED)
100static __inline__ int abortboot(int bootdelay)
101{
102 int abort = 0;
103 uint64_t etime = endtick(bootdelay);
Wolfgang Denk19973b62006-10-28 00:38:39 +0200104 struct {
wdenkc6097192002-11-03 00:24:07 +0000105 char* str;
106 u_int len;
107 int retry;
108 }
Wolfgang Denk19973b62006-10-28 00:38:39 +0200109 delaykey [] = {
wdenkc6097192002-11-03 00:24:07 +0000110 { str: getenv ("bootdelaykey"), retry: 1 },
111 { str: getenv ("bootdelaykey2"), retry: 1 },
112 { str: getenv ("bootstopkey"), retry: 0 },
113 { str: getenv ("bootstopkey2"), retry: 0 },
114 };
115
116 char presskey [MAX_DELAY_STOP_STR];
117 u_int presskey_len = 0;
118 u_int presskey_max = 0;
119 u_int i;
120
121# ifdef CONFIG_AUTOBOOT_PROMPT
Stefan Roesef2302d42008-08-06 14:05:38 +0200122 printf(CONFIG_AUTOBOOT_PROMPT);
wdenkc6097192002-11-03 00:24:07 +0000123# endif
124
125# ifdef CONFIG_AUTOBOOT_DELAY_STR
126 if (delaykey[0].str == NULL)
127 delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
128# endif
129# ifdef CONFIG_AUTOBOOT_DELAY_STR2
130 if (delaykey[1].str == NULL)
131 delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
132# endif
133# ifdef CONFIG_AUTOBOOT_STOP_STR
134 if (delaykey[2].str == NULL)
135 delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
136# endif
137# ifdef CONFIG_AUTOBOOT_STOP_STR2
138 if (delaykey[3].str == NULL)
139 delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
140# endif
141
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;
147
148 presskey_max = presskey_max > delaykey[i].len ?
149 presskey_max : delaykey[i].len;
150
151# if DEBUG_BOOTKEYS
152 printf("%s key:<%s>\n",
153 delaykey[i].retry ? "delay" : "stop",
154 delaykey[i].str ? delaykey[i].str : "NULL");
155# endif
156 }
157
158 /* In order to keep up with incoming data, check timeout only
159 * when catch up.
160 */
Peter Korsgaardc3284b02008-12-10 16:24:16 +0100161 do {
162 if (tstc()) {
163 if (presskey_len < presskey_max) {
164 presskey [presskey_len ++] = getc();
165 }
166 else {
167 for (i = 0; i < presskey_max - 1; i ++)
168 presskey [i] = presskey [i + 1];
169
170 presskey [i] = getc();
171 }
172 }
173
wdenkc6097192002-11-03 00:24:07 +0000174 for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i ++) {
175 if (delaykey[i].len > 0 &&
176 presskey_len >= delaykey[i].len &&
177 memcmp (presskey + presskey_len - delaykey[i].len,
wdenk8bde7f72003-06-27 21:31:46 +0000178 delaykey[i].str,
wdenkc6097192002-11-03 00:24:07 +0000179 delaykey[i].len) == 0) {
180# if DEBUG_BOOTKEYS
181 printf("got %skey\n",
182 delaykey[i].retry ? "delay" : "stop");
183# endif
184
185# ifdef CONFIG_BOOT_RETRY_TIME
186 /* don't retry auto boot */
187 if (! delaykey[i].retry)
188 retry_time = -1;
189# endif
190 abort = 1;
191 }
192 }
Peter Korsgaardc3284b02008-12-10 16:24:16 +0100193 } while (!abort && get_ticks() <= etime);
wdenkc6097192002-11-03 00:24:07 +0000194
wdenkc6097192002-11-03 00:24:07 +0000195# if DEBUG_BOOTKEYS
196 if (!abort)
Ladislav Michlada4d402007-04-25 16:01:26 +0200197 puts("key timeout\n");
wdenkc6097192002-11-03 00:24:07 +0000198# endif
199
dzu8cb81432003-10-24 13:14:45 +0000200#ifdef CONFIG_SILENT_CONSOLE
Ladislav Michl4ec5bd52007-04-25 16:01:26 +0200201 if (abort)
202 gd->flags &= ~GD_FLG_SILENT;
dzu8cb81432003-10-24 13:14:45 +0000203#endif
204
wdenkc6097192002-11-03 00:24:07 +0000205 return abort;
206}
207
208# else /* !defined(CONFIG_AUTOBOOT_KEYED) */
209
wdenkc7de8292002-11-19 11:04:11 +0000210#ifdef CONFIG_MENUKEY
211static int menukey = 0;
212#endif
213
wdenkc6097192002-11-03 00:24:07 +0000214static __inline__ int abortboot(int bootdelay)
215{
216 int abort = 0;
217
wdenkc7de8292002-11-19 11:04:11 +0000218#ifdef CONFIG_MENUPROMPT
Stefan Roesef2302d42008-08-06 14:05:38 +0200219 printf(CONFIG_MENUPROMPT);
wdenkc7de8292002-11-19 11:04:11 +0000220#else
wdenkc6097192002-11-03 00:24:07 +0000221 printf("Hit any key to stop autoboot: %2d ", bootdelay);
wdenkc7de8292002-11-19 11:04:11 +0000222#endif
wdenkc6097192002-11-03 00:24:07 +0000223
224#if defined CONFIG_ZERO_BOOTDELAY_CHECK
wdenk8bde7f72003-06-27 21:31:46 +0000225 /*
226 * Check if key already pressed
227 * Don't check if bootdelay < 0
228 */
wdenkc6097192002-11-03 00:24:07 +0000229 if (bootdelay >= 0) {
230 if (tstc()) { /* we got a key press */
231 (void) getc(); /* consume input */
wdenk4b9206e2004-03-23 22:14:11 +0000232 puts ("\b\b\b 0");
Ladislav Michl4ec5bd52007-04-25 16:01:26 +0200233 abort = 1; /* don't auto boot */
wdenkc6097192002-11-03 00:24:07 +0000234 }
wdenk8bde7f72003-06-27 21:31:46 +0000235 }
wdenkc6097192002-11-03 00:24:07 +0000236#endif
237
wdenkf72da342003-10-10 10:05:42 +0000238 while ((bootdelay > 0) && (!abort)) {
wdenkc6097192002-11-03 00:24:07 +0000239 int i;
240
241 --bootdelay;
242 /* delay 100 * 10ms */
243 for (i=0; !abort && i<100; ++i) {
244 if (tstc()) { /* we got a key press */
245 abort = 1; /* don't auto boot */
246 bootdelay = 0; /* no more delay */
wdenkc7de8292002-11-19 11:04:11 +0000247# ifdef CONFIG_MENUKEY
248 menukey = getc();
249# else
wdenkc6097192002-11-03 00:24:07 +0000250 (void) getc(); /* consume input */
wdenkc7de8292002-11-19 11:04:11 +0000251# endif
wdenkc6097192002-11-03 00:24:07 +0000252 break;
253 }
Ladislav Michlada4d402007-04-25 16:01:26 +0200254 udelay(10000);
wdenkc6097192002-11-03 00:24:07 +0000255 }
256
Ladislav Michlada4d402007-04-25 16:01:26 +0200257 printf("\b\b\b%2d ", bootdelay);
wdenkc6097192002-11-03 00:24:07 +0000258 }
259
Ladislav Michlada4d402007-04-25 16:01:26 +0200260 putc('\n');
wdenkc6097192002-11-03 00:24:07 +0000261
wdenkf72da342003-10-10 10:05:42 +0000262#ifdef CONFIG_SILENT_CONSOLE
Ladislav Michl4ec5bd52007-04-25 16:01:26 +0200263 if (abort)
264 gd->flags &= ~GD_FLG_SILENT;
wdenkf72da342003-10-10 10:05:42 +0000265#endif
266
wdenkc6097192002-11-03 00:24:07 +0000267 return abort;
268}
269# endif /* CONFIG_AUTOBOOT_KEYED */
270#endif /* CONFIG_BOOTDELAY >= 0 */
271
272/****************************************************************************/
273
274void main_loop (void)
275{
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200276#ifndef CONFIG_SYS_HUSH_PARSER
277 static char lastcommand[CONFIG_SYS_CBSIZE] = { 0, };
wdenkc6097192002-11-03 00:24:07 +0000278 int len;
279 int rc = 1;
280 int flag;
281#endif
282
283#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
284 char *s;
285 int bootdelay;
286#endif
287#ifdef CONFIG_PREBOOT
288 char *p;
289#endif
wdenkbdccc4f2003-08-05 17:43:17 +0000290#ifdef CONFIG_BOOTCOUNT_LIMIT
291 unsigned long bootcount = 0;
292 unsigned long bootlimit = 0;
293 char *bcs;
294 char bcs_set[16];
295#endif /* CONFIG_BOOTCOUNT_LIMIT */
wdenkc6097192002-11-03 00:24:07 +0000296
297#if defined(CONFIG_VFD) && defined(VFD_TEST_LOGO)
298 ulong bmp = 0; /* default bitmap */
299 extern int trab_vfd (ulong bitmap);
300
301#ifdef CONFIG_MODEM_SUPPORT
302 if (do_mdm_init)
303 bmp = 1; /* alternate bitmap */
304#endif
305 trab_vfd (bmp);
306#endif /* CONFIG_VFD && VFD_TEST_LOGO */
307
wdenkbdccc4f2003-08-05 17:43:17 +0000308#ifdef CONFIG_BOOTCOUNT_LIMIT
309 bootcount = bootcount_load();
310 bootcount++;
311 bootcount_store (bootcount);
312 sprintf (bcs_set, "%lu", bootcount);
313 setenv ("bootcount", bcs_set);
314 bcs = getenv ("bootlimit");
315 bootlimit = bcs ? simple_strtoul (bcs, NULL, 10) : 0;
316#endif /* CONFIG_BOOTCOUNT_LIMIT */
317
wdenkc6097192002-11-03 00:24:07 +0000318#ifdef CONFIG_MODEM_SUPPORT
319 debug ("DEBUG: main_loop: do_mdm_init=%d\n", do_mdm_init);
320 if (do_mdm_init) {
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200321 char *str = strdup(getenv("mdm_cmd"));
wdenkc6097192002-11-03 00:24:07 +0000322 setenv ("preboot", str); /* set or delete definition */
323 if (str != NULL)
324 free (str);
325 mdm_init(); /* wait for modem connection */
326 }
327#endif /* CONFIG_MODEM_SUPPORT */
328
stroese05875972003-04-04 15:44:49 +0000329#ifdef CONFIG_VERSION_VARIABLE
330 {
331 extern char version_string[];
stroese05875972003-04-04 15:44:49 +0000332
stroese155cb012003-07-11 08:00:33 +0000333 setenv ("ver", version_string); /* set version variable */
stroese05875972003-04-04 15:44:49 +0000334 }
335#endif /* CONFIG_VERSION_VARIABLE */
336
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200337#ifdef CONFIG_SYS_HUSH_PARSER
wdenkc6097192002-11-03 00:24:07 +0000338 u_boot_hush_start ();
339#endif
340
Heiko Schocher81473f62008-10-15 09:40:28 +0200341#if defined(CONFIG_HUSH_INIT_VAR)
342 hush_init_var ();
343#endif
344
wdenk04a85b32004-04-15 18:22:41 +0000345#ifdef CONFIG_AUTO_COMPLETE
346 install_auto_complete();
347#endif
348
wdenkc6097192002-11-03 00:24:07 +0000349#ifdef CONFIG_PREBOOT
350 if ((p = getenv ("preboot")) != NULL) {
351# ifdef CONFIG_AUTOBOOT_KEYED
352 int prev = disable_ctrlc(1); /* disable Control C checking */
353# endif
354
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200355# ifndef CONFIG_SYS_HUSH_PARSER
wdenkc6097192002-11-03 00:24:07 +0000356 run_command (p, 0);
357# else
358 parse_string_outer(p, FLAG_PARSE_SEMICOLON |
359 FLAG_EXIT_FROM_LOOP);
360# endif
361
362# ifdef CONFIG_AUTOBOOT_KEYED
363 disable_ctrlc(prev); /* restore Control C checking */
364# endif
365 }
366#endif /* CONFIG_PREBOOT */
367
Wolfgang Denk143cd212010-03-11 23:56:03 +0100368#if defined(CONFIG_UPDATE_TFTP)
369 update_tftp ();
370#endif /* CONFIG_UPDATE_TFTP */
371
wdenkc6097192002-11-03 00:24:07 +0000372#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
373 s = getenv ("bootdelay");
374 bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
375
wdenka6c7ad22002-12-03 21:28:10 +0000376 debug ("### main_loop entered: bootdelay=%d\n\n", bootdelay);
wdenkc6097192002-11-03 00:24:07 +0000377
378# ifdef CONFIG_BOOT_RETRY_TIME
wdenk6dd652f2003-06-19 23:40:20 +0000379 init_cmd_timeout ();
wdenkc6097192002-11-03 00:24:07 +0000380# endif /* CONFIG_BOOT_RETRY_TIME */
381
Yuri Tikhonovb428f6a2008-02-04 14:11:03 +0100382#ifdef CONFIG_POST
383 if (gd->flags & GD_FLG_POSTFAIL) {
384 s = getenv("failbootcmd");
385 }
386 else
387#endif /* CONFIG_POST */
wdenkbdccc4f2003-08-05 17:43:17 +0000388#ifdef CONFIG_BOOTCOUNT_LIMIT
389 if (bootlimit && (bootcount > bootlimit)) {
390 printf ("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
391 (unsigned)bootlimit);
392 s = getenv ("altbootcmd");
393 }
394 else
395#endif /* CONFIG_BOOTCOUNT_LIMIT */
396 s = getenv ("bootcmd");
wdenka6c7ad22002-12-03 21:28:10 +0000397
398 debug ("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
399
wdenkc6097192002-11-03 00:24:07 +0000400 if (bootdelay >= 0 && s && !abortboot (bootdelay)) {
401# ifdef CONFIG_AUTOBOOT_KEYED
402 int prev = disable_ctrlc(1); /* disable Control C checking */
403# endif
404
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200405# ifndef CONFIG_SYS_HUSH_PARSER
wdenkc6097192002-11-03 00:24:07 +0000406 run_command (s, 0);
407# else
408 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
409 FLAG_EXIT_FROM_LOOP);
410# endif
411
412# ifdef CONFIG_AUTOBOOT_KEYED
413 disable_ctrlc(prev); /* restore Control C checking */
414# endif
415 }
wdenkc7de8292002-11-19 11:04:11 +0000416
417# ifdef CONFIG_MENUKEY
wdenka6c7ad22002-12-03 21:28:10 +0000418 if (menukey == CONFIG_MENUKEY) {
wdenkc7de8292002-11-19 11:04:11 +0000419 s = getenv("menucmd");
wdenka6c7ad22002-12-03 21:28:10 +0000420 if (s) {
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200421# ifndef CONFIG_SYS_HUSH_PARSER
wdenk6225c5d2005-01-09 23:33:49 +0000422 run_command (s, 0);
wdenkc7de8292002-11-19 11:04:11 +0000423# else
424 parse_string_outer(s, FLAG_PARSE_SEMICOLON |
425 FLAG_EXIT_FROM_LOOP);
426# endif
427 }
428 }
429#endif /* CONFIG_MENUKEY */
wdenkc6097192002-11-03 00:24:07 +0000430#endif /* CONFIG_BOOTDELAY */
431
wdenkc7de8292002-11-19 11:04:11 +0000432#ifdef CONFIG_AMIGAONEG3SE
433 {
434 extern void video_banner(void);
435 video_banner();
436 }
437#endif
438
wdenkc6097192002-11-03 00:24:07 +0000439 /*
440 * Main Loop for Monitor Command Processing
441 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200442#ifdef CONFIG_SYS_HUSH_PARSER
wdenkc6097192002-11-03 00:24:07 +0000443 parse_file_outer();
444 /* This point is never reached */
445 for (;;);
446#else
447 for (;;) {
448#ifdef CONFIG_BOOT_RETRY_TIME
449 if (rc >= 0) {
450 /* Saw enough of a valid command to
451 * restart the timeout.
452 */
453 reset_cmd_timeout();
454 }
455#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200456 len = readline (CONFIG_SYS_PROMPT);
wdenkc6097192002-11-03 00:24:07 +0000457
458 flag = 0; /* assume no special flags for now */
459 if (len > 0)
460 strcpy (lastcommand, console_buffer);
461 else if (len == 0)
462 flag |= CMD_FLAG_REPEAT;
463#ifdef CONFIG_BOOT_RETRY_TIME
464 else if (len == -2) {
465 /* -2 means timed out, retry autoboot
466 */
wdenk4b9206e2004-03-23 22:14:11 +0000467 puts ("\nTimed out waiting for command\n");
wdenkc6097192002-11-03 00:24:07 +0000468# ifdef CONFIG_RESET_TO_RETRY
469 /* Reinit board to run initialization code again */
470 do_reset (NULL, 0, 0, NULL);
471# else
472 return; /* retry autoboot */
473# endif
474 }
475#endif
476
477 if (len == -1)
wdenk4b9206e2004-03-23 22:14:11 +0000478 puts ("<INTERRUPT>\n");
wdenkc6097192002-11-03 00:24:07 +0000479 else
480 rc = run_command (lastcommand, flag);
481
482 if (rc <= 0) {
483 /* invalid command or not repeatable, forget it */
484 lastcommand[0] = 0;
485 }
486 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200487#endif /*CONFIG_SYS_HUSH_PARSER*/
wdenkc6097192002-11-03 00:24:07 +0000488}
489
wdenk6dd652f2003-06-19 23:40:20 +0000490#ifdef CONFIG_BOOT_RETRY_TIME
491/***************************************************************************
Wolfgang Denk19973b62006-10-28 00:38:39 +0200492 * initialize command line timeout
wdenk6dd652f2003-06-19 23:40:20 +0000493 */
494void init_cmd_timeout(void)
495{
496 char *s = getenv ("bootretry");
497
498 if (s != NULL)
wdenkb028f712003-12-07 21:39:28 +0000499 retry_time = (int)simple_strtol(s, NULL, 10);
wdenk6dd652f2003-06-19 23:40:20 +0000500 else
501 retry_time = CONFIG_BOOT_RETRY_TIME;
502
503 if (retry_time >= 0 && retry_time < CONFIG_BOOT_RETRY_MIN)
504 retry_time = CONFIG_BOOT_RETRY_MIN;
505}
506
wdenkc6097192002-11-03 00:24:07 +0000507/***************************************************************************
508 * reset command line timeout to retry_time seconds
509 */
wdenkc6097192002-11-03 00:24:07 +0000510void reset_cmd_timeout(void)
511{
512 endtime = endtick(retry_time);
513}
514#endif
515
Wolfgang Denk501090a2006-07-21 11:33:45 +0200516#ifdef CONFIG_CMDLINE_EDITING
517
518/*
519 * cmdline-editing related codes from vivi.
520 * Author: Janghoon Lyu <nandy@mizi.com>
521 */
522
Wolfgang Denk501090a2006-07-21 11:33:45 +0200523#define putnstr(str,n) do { \
Andrew Klossnerdc4b0b32008-07-07 06:41:14 -0700524 printf ("%.*s", (int)n, str); \
Wolfgang Denk501090a2006-07-21 11:33:45 +0200525 } while (0)
Wolfgang Denk501090a2006-07-21 11:33:45 +0200526
527#define CTL_CH(c) ((c) - 'a' + 1)
528
John Schmollerd6112952010-03-12 09:49:24 -0600529#define MAX_CMDBUF_SIZE CONFIG_SYS_CBSIZE
Wolfgang Denk501090a2006-07-21 11:33:45 +0200530
531#define CTL_BACKSPACE ('\b')
532#define DEL ((char)255)
533#define DEL7 ((char)127)
534#define CREAD_HIST_CHAR ('!')
535
536#define getcmd_putch(ch) putc(ch)
537#define getcmd_getch() getc()
538#define getcmd_cbeep() getcmd_putch('\a')
539
540#define HIST_MAX 20
541#define HIST_SIZE MAX_CMDBUF_SIZE
542
543static int hist_max = 0;
544static int hist_add_idx = 0;
545static int hist_cur = -1;
546unsigned hist_num = 0;
547
548char* hist_list[HIST_MAX];
John Schmoller6475b9f2010-03-12 09:49:23 -0600549char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */
Wolfgang Denk501090a2006-07-21 11:33:45 +0200550
551#define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
552
553static void hist_init(void)
554{
555 int i;
556
557 hist_max = 0;
558 hist_add_idx = 0;
559 hist_cur = -1;
560 hist_num = 0;
561
562 for (i = 0; i < HIST_MAX; i++) {
563 hist_list[i] = hist_lines[i];
564 hist_list[i][0] = '\0';
565 }
566}
567
568static void cread_add_to_hist(char *line)
569{
570 strcpy(hist_list[hist_add_idx], line);
571
572 if (++hist_add_idx >= HIST_MAX)
573 hist_add_idx = 0;
574
575 if (hist_add_idx > hist_max)
576 hist_max = hist_add_idx;
577
578 hist_num++;
579}
580
581static char* hist_prev(void)
582{
583 char *ret;
584 int old_cur;
585
586 if (hist_cur < 0)
587 return NULL;
588
589 old_cur = hist_cur;
590 if (--hist_cur < 0)
591 hist_cur = hist_max;
592
593 if (hist_cur == hist_add_idx) {
594 hist_cur = old_cur;
595 ret = NULL;
596 } else
597 ret = hist_list[hist_cur];
598
599 return (ret);
600}
601
602static char* hist_next(void)
603{
604 char *ret;
605
606 if (hist_cur < 0)
607 return NULL;
608
609 if (hist_cur == hist_add_idx)
610 return NULL;
611
612 if (++hist_cur > hist_max)
613 hist_cur = 0;
614
615 if (hist_cur == hist_add_idx) {
616 ret = "";
617 } else
618 ret = hist_list[hist_cur];
619
620 return (ret);
621}
622
Stefan Roese3ca91222006-07-27 16:11:19 +0200623#ifndef CONFIG_CMDLINE_EDITING
Wolfgang Denk501090a2006-07-21 11:33:45 +0200624static void cread_print_hist_list(void)
625{
626 int i;
627 unsigned long n;
628
629 n = hist_num - hist_max;
630
631 i = hist_add_idx + 1;
632 while (1) {
633 if (i > hist_max)
634 i = 0;
635 if (i == hist_add_idx)
636 break;
637 printf("%s\n", hist_list[i]);
638 n++;
639 i++;
640 }
641}
Stefan Roese3ca91222006-07-27 16:11:19 +0200642#endif /* CONFIG_CMDLINE_EDITING */
Wolfgang Denk501090a2006-07-21 11:33:45 +0200643
644#define BEGINNING_OF_LINE() { \
645 while (num) { \
646 getcmd_putch(CTL_BACKSPACE); \
647 num--; \
648 } \
649}
650
651#define ERASE_TO_EOL() { \
652 if (num < eol_num) { \
653 int tmp; \
654 for (tmp = num; tmp < eol_num; tmp++) \
655 getcmd_putch(' '); \
656 while (tmp-- > num) \
657 getcmd_putch(CTL_BACKSPACE); \
658 eol_num = num; \
659 } \
660}
661
662#define REFRESH_TO_EOL() { \
663 if (num < eol_num) { \
664 wlen = eol_num - num; \
665 putnstr(buf + num, wlen); \
666 num = eol_num; \
667 } \
668}
669
670static void cread_add_char(char ichar, int insert, unsigned long *num,
671 unsigned long *eol_num, char *buf, unsigned long len)
672{
673 unsigned long wlen;
674
675 /* room ??? */
676 if (insert || *num == *eol_num) {
677 if (*eol_num > len - 1) {
678 getcmd_cbeep();
679 return;
680 }
681 (*eol_num)++;
682 }
683
684 if (insert) {
685 wlen = *eol_num - *num;
686 if (wlen > 1) {
687 memmove(&buf[*num+1], &buf[*num], wlen-1);
688 }
689
690 buf[*num] = ichar;
691 putnstr(buf + *num, wlen);
692 (*num)++;
693 while (--wlen) {
694 getcmd_putch(CTL_BACKSPACE);
695 }
696 } else {
697 /* echo the character */
698 wlen = 1;
699 buf[*num] = ichar;
700 putnstr(buf + *num, wlen);
701 (*num)++;
702 }
703}
704
705static void cread_add_str(char *str, int strsize, int insert, unsigned long *num,
706 unsigned long *eol_num, char *buf, unsigned long len)
707{
708 while (strsize--) {
709 cread_add_char(*str, insert, num, eol_num, buf, len);
710 str++;
711 }
712}
713
Jean-Christophe PLAGNIOL-VILLARD23d0baf2007-12-22 15:52:58 +0100714static int cread_line(const char *const prompt, char *buf, unsigned int *len)
Wolfgang Denk501090a2006-07-21 11:33:45 +0200715{
716 unsigned long num = 0;
717 unsigned long eol_num = 0;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200718 unsigned long wlen;
719 char ichar;
720 int insert = 1;
721 int esc_len = 0;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200722 char esc_save[8];
Peter Tyserecc55002009-10-25 15:12:54 -0500723 int init_len = strlen(buf);
724
725 if (init_len)
726 cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
Wolfgang Denk501090a2006-07-21 11:33:45 +0200727
728 while (1) {
Andreas Engel00ac50e2008-01-09 17:10:56 +0100729#ifdef CONFIG_BOOT_RETRY_TIME
730 while (!tstc()) { /* while no incoming data */
731 if (retry_time >= 0 && get_ticks() > endtime)
732 return (-2); /* timed out */
733 }
734#endif
735
Wolfgang Denk501090a2006-07-21 11:33:45 +0200736 ichar = getcmd_getch();
737
738 if ((ichar == '\n') || (ichar == '\r')) {
Wolfgang Denkdd9f06f2006-07-21 11:34:34 +0200739 putc('\n');
Wolfgang Denk501090a2006-07-21 11:33:45 +0200740 break;
741 }
742
743 /*
744 * handle standard linux xterm esc sequences for arrow key, etc.
745 */
746 if (esc_len != 0) {
747 if (esc_len == 1) {
748 if (ichar == '[') {
749 esc_save[esc_len] = ichar;
750 esc_len = 2;
751 } else {
752 cread_add_str(esc_save, esc_len, insert,
753 &num, &eol_num, buf, *len);
754 esc_len = 0;
755 }
756 continue;
757 }
758
759 switch (ichar) {
760
761 case 'D': /* <- key */
762 ichar = CTL_CH('b');
763 esc_len = 0;
764 break;
765 case 'C': /* -> key */
766 ichar = CTL_CH('f');
767 esc_len = 0;
768 break; /* pass off to ^F handler */
769 case 'H': /* Home key */
770 ichar = CTL_CH('a');
771 esc_len = 0;
772 break; /* pass off to ^A handler */
773 case 'A': /* up arrow */
774 ichar = CTL_CH('p');
775 esc_len = 0;
776 break; /* pass off to ^P handler */
777 case 'B': /* down arrow */
778 ichar = CTL_CH('n');
779 esc_len = 0;
780 break; /* pass off to ^N handler */
781 default:
782 esc_save[esc_len++] = ichar;
783 cread_add_str(esc_save, esc_len, insert,
784 &num, &eol_num, buf, *len);
785 esc_len = 0;
786 continue;
787 }
788 }
789
790 switch (ichar) {
791 case 0x1b:
792 if (esc_len == 0) {
793 esc_save[esc_len] = ichar;
794 esc_len = 1;
795 } else {
Wolfgang Denkdd9f06f2006-07-21 11:34:34 +0200796 puts("impossible condition #876\n");
Wolfgang Denk501090a2006-07-21 11:33:45 +0200797 esc_len = 0;
798 }
799 break;
800
801 case CTL_CH('a'):
802 BEGINNING_OF_LINE();
803 break;
804 case CTL_CH('c'): /* ^C - break */
805 *buf = '\0'; /* discard input */
806 return (-1);
807 case CTL_CH('f'):
808 if (num < eol_num) {
809 getcmd_putch(buf[num]);
810 num++;
811 }
812 break;
813 case CTL_CH('b'):
814 if (num) {
815 getcmd_putch(CTL_BACKSPACE);
816 num--;
817 }
818 break;
819 case CTL_CH('d'):
820 if (num < eol_num) {
821 wlen = eol_num - num - 1;
822 if (wlen) {
823 memmove(&buf[num], &buf[num+1], wlen);
824 putnstr(buf + num, wlen);
825 }
826
827 getcmd_putch(' ');
828 do {
829 getcmd_putch(CTL_BACKSPACE);
830 } while (wlen--);
831 eol_num--;
832 }
833 break;
834 case CTL_CH('k'):
835 ERASE_TO_EOL();
836 break;
837 case CTL_CH('e'):
838 REFRESH_TO_EOL();
839 break;
840 case CTL_CH('o'):
841 insert = !insert;
842 break;
843 case CTL_CH('x'):
Jean-Christophe PLAGNIOL-VILLARD23d0baf2007-12-22 15:52:58 +0100844 case CTL_CH('u'):
Wolfgang Denk501090a2006-07-21 11:33:45 +0200845 BEGINNING_OF_LINE();
846 ERASE_TO_EOL();
847 break;
848 case DEL:
849 case DEL7:
850 case 8:
851 if (num) {
852 wlen = eol_num - num;
853 num--;
854 memmove(&buf[num], &buf[num+1], wlen);
855 getcmd_putch(CTL_BACKSPACE);
856 putnstr(buf + num, wlen);
857 getcmd_putch(' ');
858 do {
859 getcmd_putch(CTL_BACKSPACE);
860 } while (wlen--);
861 eol_num--;
862 }
863 break;
864 case CTL_CH('p'):
865 case CTL_CH('n'):
866 {
867 char * hline;
868
869 esc_len = 0;
870
871 if (ichar == CTL_CH('p'))
872 hline = hist_prev();
873 else
874 hline = hist_next();
875
876 if (!hline) {
877 getcmd_cbeep();
878 continue;
879 }
880
881 /* nuke the current line */
882 /* first, go home */
883 BEGINNING_OF_LINE();
884
885 /* erase to end of line */
886 ERASE_TO_EOL();
887
888 /* copy new line into place and display */
889 strcpy(buf, hline);
890 eol_num = strlen(buf);
891 REFRESH_TO_EOL();
892 continue;
893 }
Jean-Christophe PLAGNIOL-VILLARD23d0baf2007-12-22 15:52:58 +0100894#ifdef CONFIG_AUTO_COMPLETE
895 case '\t': {
896 int num2, col;
897
898 /* do not autocomplete when in the middle */
899 if (num < eol_num) {
900 getcmd_cbeep();
901 break;
902 }
903
904 buf[num] = '\0';
905 col = strlen(prompt) + eol_num;
906 num2 = num;
907 if (cmd_auto_complete(prompt, buf, &num2, &col)) {
908 col = num2 - num;
909 num += col;
910 eol_num += col;
911 }
912 break;
913 }
914#endif
Wolfgang Denk501090a2006-07-21 11:33:45 +0200915 default:
916 cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
917 break;
918 }
919 }
920 *len = eol_num;
921 buf[eol_num] = '\0'; /* lose the newline */
922
923 if (buf[0] && buf[0] != CREAD_HIST_CHAR)
924 cread_add_to_hist(buf);
925 hist_cur = hist_add_idx;
926
Peter Tyserf9239432009-10-25 15:12:53 -0500927 return 0;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200928}
929
930#endif /* CONFIG_CMDLINE_EDITING */
931
wdenkc6097192002-11-03 00:24:07 +0000932/****************************************************************************/
933
934/*
935 * Prompt for input and read a line.
936 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
937 * time out when time goes past endtime (timebase time in ticks).
938 * Return: number of read characters
939 * -1 if break
940 * -2 if timed out
941 */
942int readline (const char *const prompt)
943{
Peter Tyserecc55002009-10-25 15:12:54 -0500944 /*
945 * If console_buffer isn't 0-length the user will be prompted to modify
946 * it instead of entering it from scratch as desired.
947 */
948 console_buffer[0] = '\0';
949
James Yang6636b622008-01-09 11:17:49 -0600950 return readline_into_buffer(prompt, console_buffer);
951}
952
953
954int readline_into_buffer (const char *const prompt, char * buffer)
955{
956 char *p = buffer;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200957#ifdef CONFIG_CMDLINE_EDITING
Wolfgang Denk501090a2006-07-21 11:33:45 +0200958 unsigned int len=MAX_CMDBUF_SIZE;
Stefan Roesed8f961b2006-08-07 15:08:44 +0200959 int rc;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200960 static int initted = 0;
961
James Yang597f6c22008-05-05 10:22:53 -0500962 /*
963 * History uses a global array which is not
964 * writable until after relocation to RAM.
965 * Revert to non-history version if still
966 * running from flash.
967 */
968 if (gd->flags & GD_FLG_RELOC) {
969 if (!initted) {
970 hist_init();
971 initted = 1;
972 }
973
Peter Tysere491a712009-10-25 15:12:52 -0500974 if (prompt)
975 puts (prompt);
James Yang597f6c22008-05-05 10:22:53 -0500976
977 rc = cread_line(prompt, p, &len);
978 return rc < 0 ? rc : len;
979
980 } else {
981#endif /* CONFIG_CMDLINE_EDITING */
Kumar Gala0ec59522008-01-10 02:22:05 -0600982 char * p_buf = p;
wdenkc6097192002-11-03 00:24:07 +0000983 int n = 0; /* buffer index */
984 int plen = 0; /* prompt length */
985 int col; /* output column cnt */
986 char c;
987
988 /* print prompt */
989 if (prompt) {
990 plen = strlen (prompt);
991 puts (prompt);
992 }
993 col = plen;
994
995 for (;;) {
996#ifdef CONFIG_BOOT_RETRY_TIME
997 while (!tstc()) { /* while no incoming data */
998 if (retry_time >= 0 && get_ticks() > endtime)
999 return (-2); /* timed out */
1000 }
1001#endif
1002 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
1003
1004#ifdef CONFIG_SHOW_ACTIVITY
1005 while (!tstc()) {
1006 extern void show_activity(int arg);
1007 show_activity(0);
1008 }
1009#endif
1010 c = getc();
1011
1012 /*
1013 * Special character handling
1014 */
1015 switch (c) {
1016 case '\r': /* Enter */
1017 case '\n':
1018 *p = '\0';
1019 puts ("\r\n");
James Yang6636b622008-01-09 11:17:49 -06001020 return (p - p_buf);
wdenkc6097192002-11-03 00:24:07 +00001021
wdenk27aa8182004-03-23 22:37:33 +00001022 case '\0': /* nul */
1023 continue;
1024
wdenkc6097192002-11-03 00:24:07 +00001025 case 0x03: /* ^C - break */
James Yang6636b622008-01-09 11:17:49 -06001026 p_buf[0] = '\0'; /* discard input */
wdenkc6097192002-11-03 00:24:07 +00001027 return (-1);
1028
1029 case 0x15: /* ^U - erase line */
1030 while (col > plen) {
1031 puts (erase_seq);
1032 --col;
1033 }
James Yang6636b622008-01-09 11:17:49 -06001034 p = p_buf;
wdenkc6097192002-11-03 00:24:07 +00001035 n = 0;
1036 continue;
1037
Wolfgang Denk1636d1c2007-06-22 23:59:00 +02001038 case 0x17: /* ^W - erase word */
James Yang6636b622008-01-09 11:17:49 -06001039 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001040 while ((n > 0) && (*p != ' ')) {
James Yang6636b622008-01-09 11:17:49 -06001041 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001042 }
1043 continue;
1044
1045 case 0x08: /* ^H - backspace */
1046 case 0x7F: /* DEL - backspace */
James Yang6636b622008-01-09 11:17:49 -06001047 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001048 continue;
1049
1050 default:
1051 /*
1052 * Must be a normal character then
1053 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001054 if (n < CONFIG_SYS_CBSIZE-2) {
wdenkc6097192002-11-03 00:24:07 +00001055 if (c == '\t') { /* expand TABs */
wdenk04a85b32004-04-15 18:22:41 +00001056#ifdef CONFIG_AUTO_COMPLETE
1057 /* if auto completion triggered just continue */
1058 *p = '\0';
1059 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
James Yang6636b622008-01-09 11:17:49 -06001060 p = p_buf + n; /* reset */
wdenk04a85b32004-04-15 18:22:41 +00001061 continue;
1062 }
1063#endif
wdenkc6097192002-11-03 00:24:07 +00001064 puts (tab_seq+(col&07));
1065 col += 8 - (col&07);
1066 } else {
1067 ++col; /* echo input */
1068 putc (c);
1069 }
1070 *p++ = c;
1071 ++n;
1072 } else { /* Buffer full */
1073 putc ('\a');
1074 }
1075 }
1076 }
James Yang597f6c22008-05-05 10:22:53 -05001077#ifdef CONFIG_CMDLINE_EDITING
1078 }
1079#endif
wdenkc6097192002-11-03 00:24:07 +00001080}
1081
1082/****************************************************************************/
1083
1084static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1085{
1086 char *s;
1087
1088 if (*np == 0) {
1089 return (p);
1090 }
1091
1092 if (*(--p) == '\t') { /* will retype the whole line */
1093 while (*colp > plen) {
1094 puts (erase_seq);
1095 (*colp)--;
1096 }
1097 for (s=buffer; s<p; ++s) {
1098 if (*s == '\t') {
1099 puts (tab_seq+((*colp) & 07));
1100 *colp += 8 - ((*colp) & 07);
1101 } else {
1102 ++(*colp);
1103 putc (*s);
1104 }
1105 }
1106 } else {
1107 puts (erase_seq);
1108 (*colp)--;
1109 }
1110 (*np)--;
1111 return (p);
1112}
1113
1114/****************************************************************************/
1115
1116int parse_line (char *line, char *argv[])
1117{
1118 int nargs = 0;
1119
1120#ifdef DEBUG_PARSER
1121 printf ("parse_line: \"%s\"\n", line);
1122#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001123 while (nargs < CONFIG_SYS_MAXARGS) {
wdenkc6097192002-11-03 00:24:07 +00001124
1125 /* skip any white space */
1126 while ((*line == ' ') || (*line == '\t')) {
1127 ++line;
1128 }
1129
1130 if (*line == '\0') { /* end of line, no more args */
1131 argv[nargs] = NULL;
1132#ifdef DEBUG_PARSER
1133 printf ("parse_line: nargs=%d\n", nargs);
1134#endif
1135 return (nargs);
1136 }
1137
1138 argv[nargs++] = line; /* begin of argument string */
1139
1140 /* find end of string */
1141 while (*line && (*line != ' ') && (*line != '\t')) {
1142 ++line;
1143 }
1144
1145 if (*line == '\0') { /* end of line, no more args */
1146 argv[nargs] = NULL;
1147#ifdef DEBUG_PARSER
1148 printf ("parse_line: nargs=%d\n", nargs);
1149#endif
1150 return (nargs);
1151 }
1152
1153 *line++ = '\0'; /* terminate current arg */
1154 }
1155
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001156 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
wdenkc6097192002-11-03 00:24:07 +00001157
1158#ifdef DEBUG_PARSER
1159 printf ("parse_line: nargs=%d\n", nargs);
1160#endif
1161 return (nargs);
1162}
1163
1164/****************************************************************************/
1165
1166static void process_macros (const char *input, char *output)
1167{
1168 char c, prev;
1169 const char *varname_start = NULL;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001170 int inputcnt = strlen (input);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001171 int outputcnt = CONFIG_SYS_CBSIZE;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001172 int state = 0; /* 0 = waiting for '$' */
1173
1174 /* 1 = waiting for '(' or '{' */
1175 /* 2 = waiting for ')' or '}' */
1176 /* 3 = waiting for ''' */
wdenkc6097192002-11-03 00:24:07 +00001177#ifdef DEBUG_PARSER
1178 char *output_start = output;
1179
Wolfgang Denk19973b62006-10-28 00:38:39 +02001180 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1181 input);
wdenkc6097192002-11-03 00:24:07 +00001182#endif
1183
Wolfgang Denk19973b62006-10-28 00:38:39 +02001184 prev = '\0'; /* previous character */
wdenkc6097192002-11-03 00:24:07 +00001185
1186 while (inputcnt && outputcnt) {
wdenk8bde7f72003-06-27 21:31:46 +00001187 c = *input++;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001188 inputcnt--;
wdenkc6097192002-11-03 00:24:07 +00001189
Wolfgang Denk19973b62006-10-28 00:38:39 +02001190 if (state != 3) {
1191 /* remove one level of escape characters */
1192 if ((c == '\\') && (prev != '\\')) {
1193 if (inputcnt-- == 0)
1194 break;
1195 prev = c;
1196 c = *input++;
1197 }
wdenka25f8622003-01-02 23:57:29 +00001198 }
wdenkc6097192002-11-03 00:24:07 +00001199
Wolfgang Denk19973b62006-10-28 00:38:39 +02001200 switch (state) {
1201 case 0: /* Waiting for (unescaped) $ */
1202 if ((c == '\'') && (prev != '\\')) {
1203 state = 3;
1204 break;
1205 }
1206 if ((c == '$') && (prev != '\\')) {
1207 state++;
1208 } else {
wdenkc6097192002-11-03 00:24:07 +00001209 *(output++) = c;
1210 outputcnt--;
1211 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001212 break;
1213 case 1: /* Waiting for ( */
1214 if (c == '(' || c == '{') {
1215 state++;
1216 varname_start = input;
1217 } else {
1218 state = 0;
1219 *(output++) = '$';
1220 outputcnt--;
wdenkc6097192002-11-03 00:24:07 +00001221
Wolfgang Denk19973b62006-10-28 00:38:39 +02001222 if (outputcnt) {
1223 *(output++) = c;
wdenkc6097192002-11-03 00:24:07 +00001224 outputcnt--;
1225 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001226 }
1227 break;
1228 case 2: /* Waiting for ) */
1229 if (c == ')' || c == '}') {
1230 int i;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001231 char envname[CONFIG_SYS_CBSIZE], *envval;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001232 int envcnt = input - varname_start - 1; /* Varname # of chars */
1233
1234 /* Get the varname */
1235 for (i = 0; i < envcnt; i++) {
1236 envname[i] = varname_start[i];
1237 }
1238 envname[i] = 0;
1239
1240 /* Get its value */
1241 envval = getenv (envname);
1242
1243 /* Copy into the line if it exists */
1244 if (envval != NULL)
1245 while ((*envval) && outputcnt) {
1246 *(output++) = *(envval++);
1247 outputcnt--;
1248 }
1249 /* Look for another '$' */
1250 state = 0;
1251 }
1252 break;
1253 case 3: /* Waiting for ' */
1254 if ((c == '\'') && (prev != '\\')) {
1255 state = 0;
1256 } else {
1257 *(output++) = c;
1258 outputcnt--;
1259 }
1260 break;
wdenkc6097192002-11-03 00:24:07 +00001261 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001262 prev = c;
wdenkc6097192002-11-03 00:24:07 +00001263 }
1264
1265 if (outputcnt)
1266 *output = 0;
Bartlomiej Sieka9160b962007-05-27 17:04:18 +02001267 else
1268 *(output - 1) = 0;
wdenkc6097192002-11-03 00:24:07 +00001269
1270#ifdef DEBUG_PARSER
1271 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
Wolfgang Denk19973b62006-10-28 00:38:39 +02001272 strlen (output_start), output_start);
wdenkc6097192002-11-03 00:24:07 +00001273#endif
1274}
1275
1276/****************************************************************************
1277 * returns:
1278 * 1 - command executed, repeatable
1279 * 0 - command executed but not repeatable, interrupted commands are
1280 * always considered not repeatable
1281 * -1 - not executed (unrecognized, bootd recursion or too many args)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001282 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
wdenkc6097192002-11-03 00:24:07 +00001283 * considered unrecognized)
1284 *
1285 * WARNING:
1286 *
1287 * We must create a temporary copy of the command since the command we get
1288 * may be the result from getenv(), which returns a pointer directly to
1289 * the environment data, which may change magicly when the command we run
1290 * creates or modifies environment variables (like "bootp" does).
1291 */
1292
1293int run_command (const char *cmd, int flag)
1294{
1295 cmd_tbl_t *cmdtp;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001296 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */
wdenkc6097192002-11-03 00:24:07 +00001297 char *token; /* start of token in cmdbuf */
1298 char *sep; /* end of token (separator) in cmdbuf */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001299 char finaltoken[CONFIG_SYS_CBSIZE];
wdenkc6097192002-11-03 00:24:07 +00001300 char *str = cmdbuf;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001301 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
wdenkf07771c2003-05-28 08:06:31 +00001302 int argc, inquotes;
wdenkc6097192002-11-03 00:24:07 +00001303 int repeatable = 1;
wdenkf07771c2003-05-28 08:06:31 +00001304 int rc = 0;
wdenkc6097192002-11-03 00:24:07 +00001305
1306#ifdef DEBUG_PARSER
1307 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1308 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
1309 puts ("\"\n");
1310#endif
1311
1312 clear_ctrlc(); /* forget any previous Control C */
1313
1314 if (!cmd || !*cmd) {
1315 return -1; /* empty command */
1316 }
1317
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001318 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
wdenkc6097192002-11-03 00:24:07 +00001319 puts ("## Command too long!\n");
1320 return -1;
1321 }
1322
1323 strcpy (cmdbuf, cmd);
1324
1325 /* Process separators and check for invalid
1326 * repeatable commands
1327 */
1328
1329#ifdef DEBUG_PARSER
1330 printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1331#endif
1332 while (*str) {
1333
1334 /*
1335 * Find separator, or string end
1336 * Allow simple escape of ';' by writing "\;"
1337 */
wdenka25f8622003-01-02 23:57:29 +00001338 for (inquotes = 0, sep = str; *sep; sep++) {
1339 if ((*sep=='\'') &&
1340 (*(sep-1) != '\\'))
1341 inquotes=!inquotes;
1342
1343 if (!inquotes &&
1344 (*sep == ';') && /* separator */
wdenkc6097192002-11-03 00:24:07 +00001345 ( sep != str) && /* past string start */
1346 (*(sep-1) != '\\')) /* and NOT escaped */
1347 break;
1348 }
1349
1350 /*
1351 * Limit the token to data between separators
1352 */
1353 token = str;
1354 if (*sep) {
1355 str = sep + 1; /* start of command for next pass */
1356 *sep = '\0';
1357 }
1358 else
1359 str = sep; /* no more commands for next pass */
1360#ifdef DEBUG_PARSER
1361 printf ("token: \"%s\"\n", token);
1362#endif
1363
1364 /* find macros in this token and replace them */
1365 process_macros (token, finaltoken);
1366
1367 /* Extract arguments */
Wolfgang Denk1264b402006-03-12 02:20:55 +01001368 if ((argc = parse_line (finaltoken, argv)) == 0) {
1369 rc = -1; /* no command at all */
1370 continue;
1371 }
wdenkc6097192002-11-03 00:24:07 +00001372
1373 /* Look up command in command table */
1374 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1375 printf ("Unknown command '%s' - try 'help'\n", argv[0]);
wdenkf07771c2003-05-28 08:06:31 +00001376 rc = -1; /* give up after bad command */
1377 continue;
wdenkc6097192002-11-03 00:24:07 +00001378 }
1379
1380 /* found - check max args */
1381 if (argc > cmdtp->maxargs) {
Peter Tyser62c3ae72009-01-27 18:03:10 -06001382 cmd_usage(cmdtp);
wdenkf07771c2003-05-28 08:06:31 +00001383 rc = -1;
1384 continue;
wdenkc6097192002-11-03 00:24:07 +00001385 }
1386
Jon Loeligerc3517f92007-07-08 18:10:08 -05001387#if defined(CONFIG_CMD_BOOTD)
wdenkc6097192002-11-03 00:24:07 +00001388 /* avoid "bootd" recursion */
1389 if (cmdtp->cmd == do_bootd) {
1390#ifdef DEBUG_PARSER
1391 printf ("[%s]\n", finaltoken);
1392#endif
1393 if (flag & CMD_FLAG_BOOTD) {
wdenk4b9206e2004-03-23 22:14:11 +00001394 puts ("'bootd' recursion detected\n");
wdenkf07771c2003-05-28 08:06:31 +00001395 rc = -1;
1396 continue;
Wolfgang Denk1264b402006-03-12 02:20:55 +01001397 } else {
wdenkc6097192002-11-03 00:24:07 +00001398 flag |= CMD_FLAG_BOOTD;
Wolfgang Denk1264b402006-03-12 02:20:55 +01001399 }
wdenkc6097192002-11-03 00:24:07 +00001400 }
Jon Loeliger90253172007-07-10 11:02:44 -05001401#endif
wdenkc6097192002-11-03 00:24:07 +00001402
1403 /* OK - call function to do the command */
1404 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
wdenkf07771c2003-05-28 08:06:31 +00001405 rc = -1;
wdenkc6097192002-11-03 00:24:07 +00001406 }
1407
1408 repeatable &= cmdtp->repeatable;
1409
1410 /* Did the user stop this? */
1411 if (had_ctrlc ())
Detlev Zundel5afb2022007-05-23 18:47:48 +02001412 return -1; /* if stopped then not repeatable */
wdenkc6097192002-11-03 00:24:07 +00001413 }
1414
wdenkf07771c2003-05-28 08:06:31 +00001415 return rc ? rc : repeatable;
wdenkc6097192002-11-03 00:24:07 +00001416}
1417
1418/****************************************************************************/
1419
Jon Loeligerc3517f92007-07-08 18:10:08 -05001420#if defined(CONFIG_CMD_RUN)
wdenkc6097192002-11-03 00:24:07 +00001421int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
1422{
1423 int i;
wdenkc6097192002-11-03 00:24:07 +00001424
1425 if (argc < 2) {
Peter Tyser62c3ae72009-01-27 18:03:10 -06001426 cmd_usage(cmdtp);
wdenkc6097192002-11-03 00:24:07 +00001427 return 1;
1428 }
1429
1430 for (i=1; i<argc; ++i) {
wdenk3e386912003-04-05 00:53:31 +00001431 char *arg;
1432
1433 if ((arg = getenv (argv[i])) == NULL) {
1434 printf ("## Error: \"%s\" not defined\n", argv[i]);
1435 return 1;
1436 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001437#ifndef CONFIG_SYS_HUSH_PARSER
wdenk3e386912003-04-05 00:53:31 +00001438 if (run_command (arg, flag) == -1)
1439 return 1;
wdenkc6097192002-11-03 00:24:07 +00001440#else
wdenk3e386912003-04-05 00:53:31 +00001441 if (parse_string_outer(arg,
wdenk7aa78612003-05-03 15:50:43 +00001442 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
wdenk3e386912003-04-05 00:53:31 +00001443 return 1;
wdenkc6097192002-11-03 00:24:07 +00001444#endif
1445 }
wdenk3e386912003-04-05 00:53:31 +00001446 return 0;
wdenkc6097192002-11-03 00:24:07 +00001447}
Jon Loeliger90253172007-07-10 11:02:44 -05001448#endif