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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 */
Jens Scharsig30dc1652010-04-09 19:02:38 +0200733 WATCHDOG_RESET();
Andreas Engel00ac50e2008-01-09 17:10:56 +0100734 }
735#endif
736
Wolfgang Denk501090a2006-07-21 11:33:45 +0200737 ichar = getcmd_getch();
738
739 if ((ichar == '\n') || (ichar == '\r')) {
Wolfgang Denkdd9f06f2006-07-21 11:34:34 +0200740 putc('\n');
Wolfgang Denk501090a2006-07-21 11:33:45 +0200741 break;
742 }
743
744 /*
745 * handle standard linux xterm esc sequences for arrow key, etc.
746 */
747 if (esc_len != 0) {
748 if (esc_len == 1) {
749 if (ichar == '[') {
750 esc_save[esc_len] = ichar;
751 esc_len = 2;
752 } else {
753 cread_add_str(esc_save, esc_len, insert,
754 &num, &eol_num, buf, *len);
755 esc_len = 0;
756 }
757 continue;
758 }
759
760 switch (ichar) {
761
762 case 'D': /* <- key */
763 ichar = CTL_CH('b');
764 esc_len = 0;
765 break;
766 case 'C': /* -> key */
767 ichar = CTL_CH('f');
768 esc_len = 0;
769 break; /* pass off to ^F handler */
770 case 'H': /* Home key */
771 ichar = CTL_CH('a');
772 esc_len = 0;
773 break; /* pass off to ^A handler */
774 case 'A': /* up arrow */
775 ichar = CTL_CH('p');
776 esc_len = 0;
777 break; /* pass off to ^P handler */
778 case 'B': /* down arrow */
779 ichar = CTL_CH('n');
780 esc_len = 0;
781 break; /* pass off to ^N handler */
782 default:
783 esc_save[esc_len++] = ichar;
784 cread_add_str(esc_save, esc_len, insert,
785 &num, &eol_num, buf, *len);
786 esc_len = 0;
787 continue;
788 }
789 }
790
791 switch (ichar) {
792 case 0x1b:
793 if (esc_len == 0) {
794 esc_save[esc_len] = ichar;
795 esc_len = 1;
796 } else {
Wolfgang Denkdd9f06f2006-07-21 11:34:34 +0200797 puts("impossible condition #876\n");
Wolfgang Denk501090a2006-07-21 11:33:45 +0200798 esc_len = 0;
799 }
800 break;
801
802 case CTL_CH('a'):
803 BEGINNING_OF_LINE();
804 break;
805 case CTL_CH('c'): /* ^C - break */
806 *buf = '\0'; /* discard input */
807 return (-1);
808 case CTL_CH('f'):
809 if (num < eol_num) {
810 getcmd_putch(buf[num]);
811 num++;
812 }
813 break;
814 case CTL_CH('b'):
815 if (num) {
816 getcmd_putch(CTL_BACKSPACE);
817 num--;
818 }
819 break;
820 case CTL_CH('d'):
821 if (num < eol_num) {
822 wlen = eol_num - num - 1;
823 if (wlen) {
824 memmove(&buf[num], &buf[num+1], wlen);
825 putnstr(buf + num, wlen);
826 }
827
828 getcmd_putch(' ');
829 do {
830 getcmd_putch(CTL_BACKSPACE);
831 } while (wlen--);
832 eol_num--;
833 }
834 break;
835 case CTL_CH('k'):
836 ERASE_TO_EOL();
837 break;
838 case CTL_CH('e'):
839 REFRESH_TO_EOL();
840 break;
841 case CTL_CH('o'):
842 insert = !insert;
843 break;
844 case CTL_CH('x'):
Jean-Christophe PLAGNIOL-VILLARD23d0baf2007-12-22 15:52:58 +0100845 case CTL_CH('u'):
Wolfgang Denk501090a2006-07-21 11:33:45 +0200846 BEGINNING_OF_LINE();
847 ERASE_TO_EOL();
848 break;
849 case DEL:
850 case DEL7:
851 case 8:
852 if (num) {
853 wlen = eol_num - num;
854 num--;
855 memmove(&buf[num], &buf[num+1], wlen);
856 getcmd_putch(CTL_BACKSPACE);
857 putnstr(buf + num, wlen);
858 getcmd_putch(' ');
859 do {
860 getcmd_putch(CTL_BACKSPACE);
861 } while (wlen--);
862 eol_num--;
863 }
864 break;
865 case CTL_CH('p'):
866 case CTL_CH('n'):
867 {
868 char * hline;
869
870 esc_len = 0;
871
872 if (ichar == CTL_CH('p'))
873 hline = hist_prev();
874 else
875 hline = hist_next();
876
877 if (!hline) {
878 getcmd_cbeep();
879 continue;
880 }
881
882 /* nuke the current line */
883 /* first, go home */
884 BEGINNING_OF_LINE();
885
886 /* erase to end of line */
887 ERASE_TO_EOL();
888
889 /* copy new line into place and display */
890 strcpy(buf, hline);
891 eol_num = strlen(buf);
892 REFRESH_TO_EOL();
893 continue;
894 }
Jean-Christophe PLAGNIOL-VILLARD23d0baf2007-12-22 15:52:58 +0100895#ifdef CONFIG_AUTO_COMPLETE
896 case '\t': {
897 int num2, col;
898
899 /* do not autocomplete when in the middle */
900 if (num < eol_num) {
901 getcmd_cbeep();
902 break;
903 }
904
905 buf[num] = '\0';
906 col = strlen(prompt) + eol_num;
907 num2 = num;
908 if (cmd_auto_complete(prompt, buf, &num2, &col)) {
909 col = num2 - num;
910 num += col;
911 eol_num += col;
912 }
913 break;
914 }
915#endif
Wolfgang Denk501090a2006-07-21 11:33:45 +0200916 default:
917 cread_add_char(ichar, insert, &num, &eol_num, buf, *len);
918 break;
919 }
920 }
921 *len = eol_num;
922 buf[eol_num] = '\0'; /* lose the newline */
923
924 if (buf[0] && buf[0] != CREAD_HIST_CHAR)
925 cread_add_to_hist(buf);
926 hist_cur = hist_add_idx;
927
Peter Tyserf9239432009-10-25 15:12:53 -0500928 return 0;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200929}
930
931#endif /* CONFIG_CMDLINE_EDITING */
932
wdenkc6097192002-11-03 00:24:07 +0000933/****************************************************************************/
934
935/*
936 * Prompt for input and read a line.
937 * If CONFIG_BOOT_RETRY_TIME is defined and retry_time >= 0,
938 * time out when time goes past endtime (timebase time in ticks).
939 * Return: number of read characters
940 * -1 if break
941 * -2 if timed out
942 */
943int readline (const char *const prompt)
944{
Peter Tyserecc55002009-10-25 15:12:54 -0500945 /*
946 * If console_buffer isn't 0-length the user will be prompted to modify
947 * it instead of entering it from scratch as desired.
948 */
949 console_buffer[0] = '\0';
950
James Yang6636b622008-01-09 11:17:49 -0600951 return readline_into_buffer(prompt, console_buffer);
952}
953
954
955int readline_into_buffer (const char *const prompt, char * buffer)
956{
957 char *p = buffer;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200958#ifdef CONFIG_CMDLINE_EDITING
Wolfgang Denk501090a2006-07-21 11:33:45 +0200959 unsigned int len=MAX_CMDBUF_SIZE;
Stefan Roesed8f961b2006-08-07 15:08:44 +0200960 int rc;
Wolfgang Denk501090a2006-07-21 11:33:45 +0200961 static int initted = 0;
962
James Yang597f6c22008-05-05 10:22:53 -0500963 /*
964 * History uses a global array which is not
965 * writable until after relocation to RAM.
966 * Revert to non-history version if still
967 * running from flash.
968 */
969 if (gd->flags & GD_FLG_RELOC) {
970 if (!initted) {
971 hist_init();
972 initted = 1;
973 }
974
Peter Tysere491a712009-10-25 15:12:52 -0500975 if (prompt)
976 puts (prompt);
James Yang597f6c22008-05-05 10:22:53 -0500977
978 rc = cread_line(prompt, p, &len);
979 return rc < 0 ? rc : len;
980
981 } else {
982#endif /* CONFIG_CMDLINE_EDITING */
Kumar Gala0ec59522008-01-10 02:22:05 -0600983 char * p_buf = p;
wdenkc6097192002-11-03 00:24:07 +0000984 int n = 0; /* buffer index */
985 int plen = 0; /* prompt length */
986 int col; /* output column cnt */
987 char c;
988
989 /* print prompt */
990 if (prompt) {
991 plen = strlen (prompt);
992 puts (prompt);
993 }
994 col = plen;
995
996 for (;;) {
997#ifdef CONFIG_BOOT_RETRY_TIME
998 while (!tstc()) { /* while no incoming data */
999 if (retry_time >= 0 && get_ticks() > endtime)
1000 return (-2); /* timed out */
Jens Scharsig30dc1652010-04-09 19:02:38 +02001001 WATCHDOG_RESET();
wdenkc6097192002-11-03 00:24:07 +00001002 }
1003#endif
1004 WATCHDOG_RESET(); /* Trigger watchdog, if needed */
1005
1006#ifdef CONFIG_SHOW_ACTIVITY
1007 while (!tstc()) {
1008 extern void show_activity(int arg);
1009 show_activity(0);
Jens Scharsig30dc1652010-04-09 19:02:38 +02001010 WATCHDOG_RESET();
wdenkc6097192002-11-03 00:24:07 +00001011 }
1012#endif
1013 c = getc();
1014
1015 /*
1016 * Special character handling
1017 */
1018 switch (c) {
1019 case '\r': /* Enter */
1020 case '\n':
1021 *p = '\0';
1022 puts ("\r\n");
James Yang6636b622008-01-09 11:17:49 -06001023 return (p - p_buf);
wdenkc6097192002-11-03 00:24:07 +00001024
wdenk27aa8182004-03-23 22:37:33 +00001025 case '\0': /* nul */
1026 continue;
1027
wdenkc6097192002-11-03 00:24:07 +00001028 case 0x03: /* ^C - break */
James Yang6636b622008-01-09 11:17:49 -06001029 p_buf[0] = '\0'; /* discard input */
wdenkc6097192002-11-03 00:24:07 +00001030 return (-1);
1031
1032 case 0x15: /* ^U - erase line */
1033 while (col > plen) {
1034 puts (erase_seq);
1035 --col;
1036 }
James Yang6636b622008-01-09 11:17:49 -06001037 p = p_buf;
wdenkc6097192002-11-03 00:24:07 +00001038 n = 0;
1039 continue;
1040
Wolfgang Denk1636d1c2007-06-22 23:59:00 +02001041 case 0x17: /* ^W - erase word */
James Yang6636b622008-01-09 11:17:49 -06001042 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001043 while ((n > 0) && (*p != ' ')) {
James Yang6636b622008-01-09 11:17:49 -06001044 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001045 }
1046 continue;
1047
1048 case 0x08: /* ^H - backspace */
1049 case 0x7F: /* DEL - backspace */
James Yang6636b622008-01-09 11:17:49 -06001050 p=delete_char(p_buf, p, &col, &n, plen);
wdenkc6097192002-11-03 00:24:07 +00001051 continue;
1052
1053 default:
1054 /*
1055 * Must be a normal character then
1056 */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001057 if (n < CONFIG_SYS_CBSIZE-2) {
wdenkc6097192002-11-03 00:24:07 +00001058 if (c == '\t') { /* expand TABs */
wdenk04a85b32004-04-15 18:22:41 +00001059#ifdef CONFIG_AUTO_COMPLETE
1060 /* if auto completion triggered just continue */
1061 *p = '\0';
1062 if (cmd_auto_complete(prompt, console_buffer, &n, &col)) {
James Yang6636b622008-01-09 11:17:49 -06001063 p = p_buf + n; /* reset */
wdenk04a85b32004-04-15 18:22:41 +00001064 continue;
1065 }
1066#endif
wdenkc6097192002-11-03 00:24:07 +00001067 puts (tab_seq+(col&07));
1068 col += 8 - (col&07);
1069 } else {
1070 ++col; /* echo input */
1071 putc (c);
1072 }
1073 *p++ = c;
1074 ++n;
1075 } else { /* Buffer full */
1076 putc ('\a');
1077 }
1078 }
1079 }
James Yang597f6c22008-05-05 10:22:53 -05001080#ifdef CONFIG_CMDLINE_EDITING
1081 }
1082#endif
wdenkc6097192002-11-03 00:24:07 +00001083}
1084
1085/****************************************************************************/
1086
1087static char * delete_char (char *buffer, char *p, int *colp, int *np, int plen)
1088{
1089 char *s;
1090
1091 if (*np == 0) {
1092 return (p);
1093 }
1094
1095 if (*(--p) == '\t') { /* will retype the whole line */
1096 while (*colp > plen) {
1097 puts (erase_seq);
1098 (*colp)--;
1099 }
1100 for (s=buffer; s<p; ++s) {
1101 if (*s == '\t') {
1102 puts (tab_seq+((*colp) & 07));
1103 *colp += 8 - ((*colp) & 07);
1104 } else {
1105 ++(*colp);
1106 putc (*s);
1107 }
1108 }
1109 } else {
1110 puts (erase_seq);
1111 (*colp)--;
1112 }
1113 (*np)--;
1114 return (p);
1115}
1116
1117/****************************************************************************/
1118
1119int parse_line (char *line, char *argv[])
1120{
1121 int nargs = 0;
1122
1123#ifdef DEBUG_PARSER
1124 printf ("parse_line: \"%s\"\n", line);
1125#endif
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001126 while (nargs < CONFIG_SYS_MAXARGS) {
wdenkc6097192002-11-03 00:24:07 +00001127
1128 /* skip any white space */
1129 while ((*line == ' ') || (*line == '\t')) {
1130 ++line;
1131 }
1132
1133 if (*line == '\0') { /* end of line, no more args */
1134 argv[nargs] = NULL;
1135#ifdef DEBUG_PARSER
1136 printf ("parse_line: nargs=%d\n", nargs);
1137#endif
1138 return (nargs);
1139 }
1140
1141 argv[nargs++] = line; /* begin of argument string */
1142
1143 /* find end of string */
1144 while (*line && (*line != ' ') && (*line != '\t')) {
1145 ++line;
1146 }
1147
1148 if (*line == '\0') { /* end of line, no more args */
1149 argv[nargs] = NULL;
1150#ifdef DEBUG_PARSER
1151 printf ("parse_line: nargs=%d\n", nargs);
1152#endif
1153 return (nargs);
1154 }
1155
1156 *line++ = '\0'; /* terminate current arg */
1157 }
1158
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001159 printf ("** Too many args (max. %d) **\n", CONFIG_SYS_MAXARGS);
wdenkc6097192002-11-03 00:24:07 +00001160
1161#ifdef DEBUG_PARSER
1162 printf ("parse_line: nargs=%d\n", nargs);
1163#endif
1164 return (nargs);
1165}
1166
1167/****************************************************************************/
1168
1169static void process_macros (const char *input, char *output)
1170{
1171 char c, prev;
1172 const char *varname_start = NULL;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001173 int inputcnt = strlen (input);
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001174 int outputcnt = CONFIG_SYS_CBSIZE;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001175 int state = 0; /* 0 = waiting for '$' */
1176
1177 /* 1 = waiting for '(' or '{' */
1178 /* 2 = waiting for ')' or '}' */
1179 /* 3 = waiting for ''' */
wdenkc6097192002-11-03 00:24:07 +00001180#ifdef DEBUG_PARSER
1181 char *output_start = output;
1182
Wolfgang Denk19973b62006-10-28 00:38:39 +02001183 printf ("[PROCESS_MACROS] INPUT len %d: \"%s\"\n", strlen (input),
1184 input);
wdenkc6097192002-11-03 00:24:07 +00001185#endif
1186
Wolfgang Denk19973b62006-10-28 00:38:39 +02001187 prev = '\0'; /* previous character */
wdenkc6097192002-11-03 00:24:07 +00001188
1189 while (inputcnt && outputcnt) {
wdenk8bde7f72003-06-27 21:31:46 +00001190 c = *input++;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001191 inputcnt--;
wdenkc6097192002-11-03 00:24:07 +00001192
Wolfgang Denk19973b62006-10-28 00:38:39 +02001193 if (state != 3) {
1194 /* remove one level of escape characters */
1195 if ((c == '\\') && (prev != '\\')) {
1196 if (inputcnt-- == 0)
1197 break;
1198 prev = c;
1199 c = *input++;
1200 }
wdenka25f8622003-01-02 23:57:29 +00001201 }
wdenkc6097192002-11-03 00:24:07 +00001202
Wolfgang Denk19973b62006-10-28 00:38:39 +02001203 switch (state) {
1204 case 0: /* Waiting for (unescaped) $ */
1205 if ((c == '\'') && (prev != '\\')) {
1206 state = 3;
1207 break;
1208 }
1209 if ((c == '$') && (prev != '\\')) {
1210 state++;
1211 } else {
wdenkc6097192002-11-03 00:24:07 +00001212 *(output++) = c;
1213 outputcnt--;
1214 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001215 break;
1216 case 1: /* Waiting for ( */
1217 if (c == '(' || c == '{') {
1218 state++;
1219 varname_start = input;
1220 } else {
1221 state = 0;
1222 *(output++) = '$';
1223 outputcnt--;
wdenkc6097192002-11-03 00:24:07 +00001224
Wolfgang Denk19973b62006-10-28 00:38:39 +02001225 if (outputcnt) {
1226 *(output++) = c;
wdenkc6097192002-11-03 00:24:07 +00001227 outputcnt--;
1228 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001229 }
1230 break;
1231 case 2: /* Waiting for ) */
1232 if (c == ')' || c == '}') {
1233 int i;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001234 char envname[CONFIG_SYS_CBSIZE], *envval;
Wolfgang Denk19973b62006-10-28 00:38:39 +02001235 int envcnt = input - varname_start - 1; /* Varname # of chars */
1236
1237 /* Get the varname */
1238 for (i = 0; i < envcnt; i++) {
1239 envname[i] = varname_start[i];
1240 }
1241 envname[i] = 0;
1242
1243 /* Get its value */
1244 envval = getenv (envname);
1245
1246 /* Copy into the line if it exists */
1247 if (envval != NULL)
1248 while ((*envval) && outputcnt) {
1249 *(output++) = *(envval++);
1250 outputcnt--;
1251 }
1252 /* Look for another '$' */
1253 state = 0;
1254 }
1255 break;
1256 case 3: /* Waiting for ' */
1257 if ((c == '\'') && (prev != '\\')) {
1258 state = 0;
1259 } else {
1260 *(output++) = c;
1261 outputcnt--;
1262 }
1263 break;
wdenkc6097192002-11-03 00:24:07 +00001264 }
Wolfgang Denk19973b62006-10-28 00:38:39 +02001265 prev = c;
wdenkc6097192002-11-03 00:24:07 +00001266 }
1267
1268 if (outputcnt)
1269 *output = 0;
Bartlomiej Sieka9160b962007-05-27 17:04:18 +02001270 else
1271 *(output - 1) = 0;
wdenkc6097192002-11-03 00:24:07 +00001272
1273#ifdef DEBUG_PARSER
1274 printf ("[PROCESS_MACROS] OUTPUT len %d: \"%s\"\n",
Wolfgang Denk19973b62006-10-28 00:38:39 +02001275 strlen (output_start), output_start);
wdenkc6097192002-11-03 00:24:07 +00001276#endif
1277}
1278
1279/****************************************************************************
1280 * returns:
1281 * 1 - command executed, repeatable
1282 * 0 - command executed but not repeatable, interrupted commands are
1283 * always considered not repeatable
1284 * -1 - not executed (unrecognized, bootd recursion or too many args)
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001285 * (If cmd is NULL or "" or longer than CONFIG_SYS_CBSIZE-1 it is
wdenkc6097192002-11-03 00:24:07 +00001286 * considered unrecognized)
1287 *
1288 * WARNING:
1289 *
1290 * We must create a temporary copy of the command since the command we get
1291 * may be the result from getenv(), which returns a pointer directly to
1292 * the environment data, which may change magicly when the command we run
1293 * creates or modifies environment variables (like "bootp" does).
1294 */
1295
1296int run_command (const char *cmd, int flag)
1297{
1298 cmd_tbl_t *cmdtp;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001299 char cmdbuf[CONFIG_SYS_CBSIZE]; /* working copy of cmd */
wdenkc6097192002-11-03 00:24:07 +00001300 char *token; /* start of token in cmdbuf */
1301 char *sep; /* end of token (separator) in cmdbuf */
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001302 char finaltoken[CONFIG_SYS_CBSIZE];
wdenkc6097192002-11-03 00:24:07 +00001303 char *str = cmdbuf;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001304 char *argv[CONFIG_SYS_MAXARGS + 1]; /* NULL terminated */
wdenkf07771c2003-05-28 08:06:31 +00001305 int argc, inquotes;
wdenkc6097192002-11-03 00:24:07 +00001306 int repeatable = 1;
wdenkf07771c2003-05-28 08:06:31 +00001307 int rc = 0;
wdenkc6097192002-11-03 00:24:07 +00001308
1309#ifdef DEBUG_PARSER
1310 printf ("[RUN_COMMAND] cmd[%p]=\"", cmd);
1311 puts (cmd ? cmd : "NULL"); /* use puts - string may be loooong */
1312 puts ("\"\n");
1313#endif
1314
1315 clear_ctrlc(); /* forget any previous Control C */
1316
1317 if (!cmd || !*cmd) {
1318 return -1; /* empty command */
1319 }
1320
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001321 if (strlen(cmd) >= CONFIG_SYS_CBSIZE) {
wdenkc6097192002-11-03 00:24:07 +00001322 puts ("## Command too long!\n");
1323 return -1;
1324 }
1325
1326 strcpy (cmdbuf, cmd);
1327
1328 /* Process separators and check for invalid
1329 * repeatable commands
1330 */
1331
1332#ifdef DEBUG_PARSER
1333 printf ("[PROCESS_SEPARATORS] %s\n", cmd);
1334#endif
1335 while (*str) {
1336
1337 /*
1338 * Find separator, or string end
1339 * Allow simple escape of ';' by writing "\;"
1340 */
wdenka25f8622003-01-02 23:57:29 +00001341 for (inquotes = 0, sep = str; *sep; sep++) {
1342 if ((*sep=='\'') &&
1343 (*(sep-1) != '\\'))
1344 inquotes=!inquotes;
1345
1346 if (!inquotes &&
1347 (*sep == ';') && /* separator */
wdenkc6097192002-11-03 00:24:07 +00001348 ( sep != str) && /* past string start */
1349 (*(sep-1) != '\\')) /* and NOT escaped */
1350 break;
1351 }
1352
1353 /*
1354 * Limit the token to data between separators
1355 */
1356 token = str;
1357 if (*sep) {
1358 str = sep + 1; /* start of command for next pass */
1359 *sep = '\0';
1360 }
1361 else
1362 str = sep; /* no more commands for next pass */
1363#ifdef DEBUG_PARSER
1364 printf ("token: \"%s\"\n", token);
1365#endif
1366
1367 /* find macros in this token and replace them */
1368 process_macros (token, finaltoken);
1369
1370 /* Extract arguments */
Wolfgang Denk1264b402006-03-12 02:20:55 +01001371 if ((argc = parse_line (finaltoken, argv)) == 0) {
1372 rc = -1; /* no command at all */
1373 continue;
1374 }
wdenkc6097192002-11-03 00:24:07 +00001375
1376 /* Look up command in command table */
1377 if ((cmdtp = find_cmd(argv[0])) == NULL) {
1378 printf ("Unknown command '%s' - try 'help'\n", argv[0]);
wdenkf07771c2003-05-28 08:06:31 +00001379 rc = -1; /* give up after bad command */
1380 continue;
wdenkc6097192002-11-03 00:24:07 +00001381 }
1382
1383 /* found - check max args */
1384 if (argc > cmdtp->maxargs) {
Peter Tyser62c3ae72009-01-27 18:03:10 -06001385 cmd_usage(cmdtp);
wdenkf07771c2003-05-28 08:06:31 +00001386 rc = -1;
1387 continue;
wdenkc6097192002-11-03 00:24:07 +00001388 }
1389
Jon Loeligerc3517f92007-07-08 18:10:08 -05001390#if defined(CONFIG_CMD_BOOTD)
wdenkc6097192002-11-03 00:24:07 +00001391 /* avoid "bootd" recursion */
1392 if (cmdtp->cmd == do_bootd) {
1393#ifdef DEBUG_PARSER
1394 printf ("[%s]\n", finaltoken);
1395#endif
1396 if (flag & CMD_FLAG_BOOTD) {
wdenk4b9206e2004-03-23 22:14:11 +00001397 puts ("'bootd' recursion detected\n");
wdenkf07771c2003-05-28 08:06:31 +00001398 rc = -1;
1399 continue;
Wolfgang Denk1264b402006-03-12 02:20:55 +01001400 } else {
wdenkc6097192002-11-03 00:24:07 +00001401 flag |= CMD_FLAG_BOOTD;
Wolfgang Denk1264b402006-03-12 02:20:55 +01001402 }
wdenkc6097192002-11-03 00:24:07 +00001403 }
Jon Loeliger90253172007-07-10 11:02:44 -05001404#endif
wdenkc6097192002-11-03 00:24:07 +00001405
1406 /* OK - call function to do the command */
1407 if ((cmdtp->cmd) (cmdtp, flag, argc, argv) != 0) {
wdenkf07771c2003-05-28 08:06:31 +00001408 rc = -1;
wdenkc6097192002-11-03 00:24:07 +00001409 }
1410
1411 repeatable &= cmdtp->repeatable;
1412
1413 /* Did the user stop this? */
1414 if (had_ctrlc ())
Detlev Zundel5afb2022007-05-23 18:47:48 +02001415 return -1; /* if stopped then not repeatable */
wdenkc6097192002-11-03 00:24:07 +00001416 }
1417
wdenkf07771c2003-05-28 08:06:31 +00001418 return rc ? rc : repeatable;
wdenkc6097192002-11-03 00:24:07 +00001419}
1420
1421/****************************************************************************/
1422
Jon Loeligerc3517f92007-07-08 18:10:08 -05001423#if defined(CONFIG_CMD_RUN)
wdenkc6097192002-11-03 00:24:07 +00001424int do_run (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
1425{
1426 int i;
wdenkc6097192002-11-03 00:24:07 +00001427
1428 if (argc < 2) {
Peter Tyser62c3ae72009-01-27 18:03:10 -06001429 cmd_usage(cmdtp);
wdenkc6097192002-11-03 00:24:07 +00001430 return 1;
1431 }
1432
1433 for (i=1; i<argc; ++i) {
wdenk3e386912003-04-05 00:53:31 +00001434 char *arg;
1435
1436 if ((arg = getenv (argv[i])) == NULL) {
1437 printf ("## Error: \"%s\" not defined\n", argv[i]);
1438 return 1;
1439 }
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +02001440#ifndef CONFIG_SYS_HUSH_PARSER
wdenk3e386912003-04-05 00:53:31 +00001441 if (run_command (arg, flag) == -1)
1442 return 1;
wdenkc6097192002-11-03 00:24:07 +00001443#else
wdenk3e386912003-04-05 00:53:31 +00001444 if (parse_string_outer(arg,
wdenk7aa78612003-05-03 15:50:43 +00001445 FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP) != 0)
wdenk3e386912003-04-05 00:53:31 +00001446 return 1;
wdenkc6097192002-11-03 00:24:07 +00001447#endif
1448 }
wdenk3e386912003-04-05 00:53:31 +00001449 return 0;
wdenkc6097192002-11-03 00:24:07 +00001450}
Jon Loeliger90253172007-07-10 11:02:44 -05001451#endif