1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000
4 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
5 */
6
7 #include <common.h>
8 #include <console.h>
9 #include <debug_uart.h>
10 #include <dm.h>
11 #include <stdarg.h>
12 #include <iomux.h>
13 #include <malloc.h>
14 #include <mapmem.h>
15 #include <os.h>
16 #include <serial.h>
17 #include <stdio_dev.h>
18 #include <exports.h>
19 #include <environment.h>
20 #include <watchdog.h>
21
22 DECLARE_GLOBAL_DATA_PTR;
23
on_console(const char * name,const char * value,enum env_op op,int flags)24 static int on_console(const char *name, const char *value, enum env_op op,
25 int flags)
26 {
27 int console = -1;
28
29 /* Check for console redirection */
30 if (strcmp(name, "stdin") == 0)
31 console = stdin;
32 else if (strcmp(name, "stdout") == 0)
33 console = stdout;
34 else if (strcmp(name, "stderr") == 0)
35 console = stderr;
36
37 /* if not actually setting a console variable, we don't care */
38 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
39 return 0;
40
41 switch (op) {
42 case env_op_create:
43 case env_op_overwrite:
44
45 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
46 if (iomux_doenv(console, value))
47 return 1;
48 #else
49 /* Try assigning specified device */
50 if (console_assign(console, value) < 0)
51 return 1;
52 #endif
53 return 0;
54
55 case env_op_delete:
56 if ((flags & H_FORCE) == 0)
57 printf("Can't delete \"%s\"\n", name);
58 return 1;
59
60 default:
61 return 0;
62 }
63 }
64 U_BOOT_ENV_CALLBACK(console, on_console);
65
66 #ifdef CONFIG_SILENT_CONSOLE
on_silent(const char * name,const char * value,enum env_op op,int flags)67 static int on_silent(const char *name, const char *value, enum env_op op,
68 int flags)
69 {
70 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET)
71 if (flags & H_INTERACTIVE)
72 return 0;
73 #endif
74 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC)
75 if ((flags & H_INTERACTIVE) == 0)
76 return 0;
77 #endif
78
79 if (value != NULL)
80 gd->flags |= GD_FLG_SILENT;
81 else
82 gd->flags &= ~GD_FLG_SILENT;
83
84 return 0;
85 }
86 U_BOOT_ENV_CALLBACK(silent, on_silent);
87 #endif
88
89 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
90 /*
91 * if overwrite_console returns 1, the stdin, stderr and stdout
92 * are switched to the serial port, else the settings in the
93 * environment are used
94 */
95 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
96 extern int overwrite_console(void);
97 #define OVERWRITE_CONSOLE overwrite_console()
98 #else
99 #define OVERWRITE_CONSOLE 0
100 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
101
102 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
103
console_setfile(int file,struct stdio_dev * dev)104 static int console_setfile(int file, struct stdio_dev * dev)
105 {
106 int error = 0;
107
108 if (dev == NULL)
109 return -1;
110
111 switch (file) {
112 case stdin:
113 case stdout:
114 case stderr:
115 /* Start new device */
116 if (dev->start) {
117 error = dev->start(dev);
118 /* If it's not started dont use it */
119 if (error < 0)
120 break;
121 }
122
123 /* Assign the new device (leaving the existing one started) */
124 stdio_devices[file] = dev;
125
126 /*
127 * Update monitor functions
128 * (to use the console stuff by other applications)
129 */
130 switch (file) {
131 case stdin:
132 gd->jt->getc = getc;
133 gd->jt->tstc = tstc;
134 break;
135 case stdout:
136 gd->jt->putc = putc;
137 gd->jt->puts = puts;
138 gd->jt->printf = printf;
139 break;
140 }
141 break;
142
143 default: /* Invalid file ID */
144 error = -1;
145 }
146 return error;
147 }
148
149 /**
150 * console_dev_is_serial() - Check if a stdio device is a serial device
151 *
152 * @sdev: Device to check
153 * @return true if this device is in the serial uclass (or for pre-driver-model,
154 * whether it is called "serial".
155 */
console_dev_is_serial(struct stdio_dev * sdev)156 static bool console_dev_is_serial(struct stdio_dev *sdev)
157 {
158 bool is_serial;
159
160 #ifdef CONFIG_DM_SERIAL
161 if (sdev->flags & DEV_FLAGS_DM) {
162 struct udevice *dev = sdev->priv;
163
164 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL;
165 } else
166 #endif
167 is_serial = !strcmp(sdev->name, "serial");
168
169 return is_serial;
170 }
171
172 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
173 /** Console I/O multiplexing *******************************************/
174
175 static struct stdio_dev *tstcdev;
176 struct stdio_dev **console_devices[MAX_FILES];
177 int cd_count[MAX_FILES];
178
179 /*
180 * This depends on tstc() always being called before getc().
181 * This is guaranteed to be true because this routine is called
182 * only from fgetc() which assures it.
183 * No attempt is made to demultiplex multiple input sources.
184 */
console_getc(int file)185 static int console_getc(int file)
186 {
187 unsigned char ret;
188
189 /* This is never called with testcdev == NULL */
190 ret = tstcdev->getc(tstcdev);
191 tstcdev = NULL;
192 return ret;
193 }
194
console_tstc(int file)195 static int console_tstc(int file)
196 {
197 int i, ret;
198 struct stdio_dev *dev;
199 int prev;
200
201 prev = disable_ctrlc(1);
202 for (i = 0; i < cd_count[file]; i++) {
203 dev = console_devices[file][i];
204 if (dev->tstc != NULL) {
205 ret = dev->tstc(dev);
206 if (ret > 0) {
207 tstcdev = dev;
208 disable_ctrlc(prev);
209 return ret;
210 }
211 }
212 }
213 disable_ctrlc(prev);
214
215 return 0;
216 }
217
console_putc(int file,const char c)218 static void console_putc(int file, const char c)
219 {
220 int i;
221 struct stdio_dev *dev;
222
223 for (i = 0; i < cd_count[file]; i++) {
224 dev = console_devices[file][i];
225 if (dev->putc != NULL)
226 dev->putc(dev, c);
227 }
228 }
229
console_puts_noserial(int file,const char * s)230 static void console_puts_noserial(int file, const char *s)
231 {
232 int i;
233 struct stdio_dev *dev;
234
235 for (i = 0; i < cd_count[file]; i++) {
236 dev = console_devices[file][i];
237 if (dev->puts != NULL && !console_dev_is_serial(dev))
238 dev->puts(dev, s);
239 }
240 }
241
console_puts(int file,const char * s)242 static void console_puts(int file, const char *s)
243 {
244 int i;
245 struct stdio_dev *dev;
246
247 for (i = 0; i < cd_count[file]; i++) {
248 dev = console_devices[file][i];
249 if (dev->puts != NULL)
250 dev->puts(dev, s);
251 }
252 }
253
console_doenv(int file,struct stdio_dev * dev)254 static inline void console_doenv(int file, struct stdio_dev *dev)
255 {
256 iomux_doenv(file, dev->name);
257 }
258 #else
console_getc(int file)259 static inline int console_getc(int file)
260 {
261 return stdio_devices[file]->getc(stdio_devices[file]);
262 }
263
console_tstc(int file)264 static inline int console_tstc(int file)
265 {
266 return stdio_devices[file]->tstc(stdio_devices[file]);
267 }
268
console_putc(int file,const char c)269 static inline void console_putc(int file, const char c)
270 {
271 stdio_devices[file]->putc(stdio_devices[file], c);
272 }
273
console_puts_noserial(int file,const char * s)274 static inline void console_puts_noserial(int file, const char *s)
275 {
276 if (!console_dev_is_serial(stdio_devices[file]))
277 stdio_devices[file]->puts(stdio_devices[file], s);
278 }
279
console_puts(int file,const char * s)280 static inline void console_puts(int file, const char *s)
281 {
282 stdio_devices[file]->puts(stdio_devices[file], s);
283 }
284
console_doenv(int file,struct stdio_dev * dev)285 static inline void console_doenv(int file, struct stdio_dev *dev)
286 {
287 console_setfile(file, dev);
288 }
289 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */
290
291 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
292
serial_printf(const char * fmt,...)293 int serial_printf(const char *fmt, ...)
294 {
295 va_list args;
296 uint i;
297 char printbuffer[CONFIG_SYS_PBSIZE];
298
299 va_start(args, fmt);
300
301 /* For this to work, printbuffer must be larger than
302 * anything we ever want to print.
303 */
304 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
305 va_end(args);
306
307 serial_puts(printbuffer);
308 return i;
309 }
310
fgetc(int file)311 int fgetc(int file)
312 {
313 if (file < MAX_FILES) {
314 /*
315 * Effectively poll for input wherever it may be available.
316 */
317 for (;;) {
318 WATCHDOG_RESET();
319 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
320 /*
321 * Upper layer may have already called tstc() so
322 * check for that first.
323 */
324 if (tstcdev != NULL)
325 return console_getc(file);
326 console_tstc(file);
327 #else
328 if (console_tstc(file))
329 return console_getc(file);
330 #endif
331 #ifdef CONFIG_WATCHDOG
332 /*
333 * If the watchdog must be rate-limited then it should
334 * already be handled in board-specific code.
335 */
336 udelay(1);
337 #endif
338 }
339 }
340
341 return -1;
342 }
343
ftstc(int file)344 int ftstc(int file)
345 {
346 if (file < MAX_FILES)
347 return console_tstc(file);
348
349 return -1;
350 }
351
fputc(int file,const char c)352 void fputc(int file, const char c)
353 {
354 if (file < MAX_FILES)
355 console_putc(file, c);
356 }
357
fputs(int file,const char * s)358 void fputs(int file, const char *s)
359 {
360 if (file < MAX_FILES)
361 console_puts(file, s);
362 }
363
fprintf(int file,const char * fmt,...)364 int fprintf(int file, const char *fmt, ...)
365 {
366 va_list args;
367 uint i;
368 char printbuffer[CONFIG_SYS_PBSIZE];
369
370 va_start(args, fmt);
371
372 /* For this to work, printbuffer must be larger than
373 * anything we ever want to print.
374 */
375 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
376 va_end(args);
377
378 /* Send to desired file */
379 fputs(file, printbuffer);
380 return i;
381 }
382
383 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
384
getc(void)385 int getc(void)
386 {
387 #ifdef CONFIG_DISABLE_CONSOLE
388 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
389 return 0;
390 #endif
391
392 if (!gd->have_console)
393 return 0;
394
395 #ifdef CONFIG_CONSOLE_RECORD
396 if (gd->console_in.start) {
397 int ch;
398
399 ch = membuff_getbyte(&gd->console_in);
400 if (ch != -1)
401 return 1;
402 }
403 #endif
404 if (gd->flags & GD_FLG_DEVINIT) {
405 /* Get from the standard input */
406 return fgetc(stdin);
407 }
408
409 /* Send directly to the handler */
410 return serial_getc();
411 }
412
tstc(void)413 int tstc(void)
414 {
415 #ifdef CONFIG_DISABLE_CONSOLE
416 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
417 return 0;
418 #endif
419
420 if (!gd->have_console)
421 return 0;
422 #ifdef CONFIG_CONSOLE_RECORD
423 if (gd->console_in.start) {
424 if (membuff_peekbyte(&gd->console_in) != -1)
425 return 1;
426 }
427 #endif
428 if (gd->flags & GD_FLG_DEVINIT) {
429 /* Test the standard input */
430 return ftstc(stdin);
431 }
432
433 /* Send directly to the handler */
434 return serial_tstc();
435 }
436
437 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
438 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
439
440 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
441 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
442
pre_console_putc(const char c)443 static void pre_console_putc(const char c)
444 {
445 char *buffer;
446
447 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
448
449 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
450
451 unmap_sysmem(buffer);
452 }
453
pre_console_puts(const char * s)454 static void pre_console_puts(const char *s)
455 {
456 while (*s)
457 pre_console_putc(*s++);
458 }
459
print_pre_console_buffer(int flushpoint)460 static void print_pre_console_buffer(int flushpoint)
461 {
462 unsigned long in = 0, out = 0;
463 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
464 char *buf_in;
465
466 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
467 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
468 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
469
470 while (in < gd->precon_buf_idx)
471 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
472 unmap_sysmem(buf_in);
473
474 buf_out[out] = 0;
475
476 switch (flushpoint) {
477 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
478 puts(buf_out);
479 break;
480 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
481 console_puts_noserial(stdout, buf_out);
482 break;
483 }
484 }
485 #else
pre_console_putc(const char c)486 static inline void pre_console_putc(const char c) {}
pre_console_puts(const char * s)487 static inline void pre_console_puts(const char *s) {}
print_pre_console_buffer(int flushpoint)488 static inline void print_pre_console_buffer(int flushpoint) {}
489 #endif
490
putc(const char c)491 void putc(const char c)
492 {
493 #ifdef CONFIG_SANDBOX
494 /* sandbox can send characters to stdout before it has a console */
495 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
496 os_putc(c);
497 return;
498 }
499 #endif
500 #ifdef CONFIG_DEBUG_UART
501 /* if we don't have a console yet, use the debug UART */
502 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
503 printch(c);
504 return;
505 }
506 #endif
507 if (!gd)
508 return;
509 #ifdef CONFIG_CONSOLE_RECORD
510 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
511 membuff_putbyte(&gd->console_out, c);
512 #endif
513 #ifdef CONFIG_SILENT_CONSOLE
514 if (gd->flags & GD_FLG_SILENT)
515 return;
516 #endif
517
518 #ifdef CONFIG_DISABLE_CONSOLE
519 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
520 return;
521 #endif
522
523 if (!gd->have_console)
524 return pre_console_putc(c);
525
526 if (gd->flags & GD_FLG_DEVINIT) {
527 /* Send to the standard output */
528 fputc(stdout, c);
529 } else {
530 /* Send directly to the handler */
531 pre_console_putc(c);
532 serial_putc(c);
533 }
534 }
535
puts(const char * s)536 void puts(const char *s)
537 {
538 #ifdef CONFIG_SANDBOX
539 /* sandbox can send characters to stdout before it has a console */
540 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
541 os_puts(s);
542 return;
543 }
544 #endif
545 #ifdef CONFIG_DEBUG_UART
546 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
547 while (*s) {
548 int ch = *s++;
549
550 printch(ch);
551 }
552 return;
553 }
554 #endif
555 if (!gd)
556 return;
557 #ifdef CONFIG_CONSOLE_RECORD
558 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
559 membuff_put(&gd->console_out, s, strlen(s));
560 #endif
561 #ifdef CONFIG_SILENT_CONSOLE
562 if (gd->flags & GD_FLG_SILENT)
563 return;
564 #endif
565
566 #ifdef CONFIG_DISABLE_CONSOLE
567 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
568 return;
569 #endif
570
571 if (!gd->have_console)
572 return pre_console_puts(s);
573
574 if (gd->flags & GD_FLG_DEVINIT) {
575 /* Send to the standard output */
576 fputs(stdout, s);
577 } else {
578 /* Send directly to the handler */
579 pre_console_puts(s);
580 serial_puts(s);
581 }
582 }
583
584 #ifdef CONFIG_CONSOLE_RECORD
console_record_init(void)585 int console_record_init(void)
586 {
587 int ret;
588
589 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE);
590 if (ret)
591 return ret;
592 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE);
593
594 return ret;
595 }
596
console_record_reset(void)597 void console_record_reset(void)
598 {
599 membuff_purge(&gd->console_out);
600 membuff_purge(&gd->console_in);
601 }
602
console_record_reset_enable(void)603 void console_record_reset_enable(void)
604 {
605 console_record_reset();
606 gd->flags |= GD_FLG_RECORD;
607 }
608 #endif
609
610 /* test if ctrl-c was pressed */
611 static int ctrlc_disabled = 0; /* see disable_ctrl() */
612 static int ctrlc_was_pressed = 0;
ctrlc(void)613 int ctrlc(void)
614 {
615 if (!ctrlc_disabled && gd->have_console) {
616 if (tstc()) {
617 switch (getc()) {
618 case 0x03: /* ^C - Control C */
619 ctrlc_was_pressed = 1;
620 return 1;
621 default:
622 break;
623 }
624 }
625 }
626
627 return 0;
628 }
629 /* Reads user's confirmation.
630 Returns 1 if user's input is "y", "Y", "yes" or "YES"
631 */
confirm_yesno(void)632 int confirm_yesno(void)
633 {
634 int i;
635 char str_input[5];
636
637 /* Flush input */
638 while (tstc())
639 getc();
640 i = 0;
641 while (i < sizeof(str_input)) {
642 str_input[i] = getc();
643 putc(str_input[i]);
644 if (str_input[i] == '\r')
645 break;
646 i++;
647 }
648 putc('\n');
649 if (strncmp(str_input, "y\r", 2) == 0 ||
650 strncmp(str_input, "Y\r", 2) == 0 ||
651 strncmp(str_input, "yes\r", 4) == 0 ||
652 strncmp(str_input, "YES\r", 4) == 0)
653 return 1;
654 return 0;
655 }
656 /* pass 1 to disable ctrlc() checking, 0 to enable.
657 * returns previous state
658 */
disable_ctrlc(int disable)659 int disable_ctrlc(int disable)
660 {
661 int prev = ctrlc_disabled; /* save previous state */
662
663 ctrlc_disabled = disable;
664 return prev;
665 }
666
had_ctrlc(void)667 int had_ctrlc (void)
668 {
669 return ctrlc_was_pressed;
670 }
671
clear_ctrlc(void)672 void clear_ctrlc(void)
673 {
674 ctrlc_was_pressed = 0;
675 }
676
677 /** U-Boot INIT FUNCTIONS *************************************************/
678
search_device(int flags,const char * name)679 struct stdio_dev *search_device(int flags, const char *name)
680 {
681 struct stdio_dev *dev;
682
683 dev = stdio_get_by_name(name);
684 #ifdef CONFIG_VIDCONSOLE_AS_LCD
685 if (!dev && !strcmp(name, "lcd"))
686 dev = stdio_get_by_name("vidconsole");
687 #endif
688
689 if (dev && (dev->flags & flags))
690 return dev;
691
692 return NULL;
693 }
694
console_assign(int file,const char * devname)695 int console_assign(int file, const char *devname)
696 {
697 int flag;
698 struct stdio_dev *dev;
699
700 /* Check for valid file */
701 switch (file) {
702 case stdin:
703 flag = DEV_FLAGS_INPUT;
704 break;
705 case stdout:
706 case stderr:
707 flag = DEV_FLAGS_OUTPUT;
708 break;
709 default:
710 return -1;
711 }
712
713 /* Check for valid device name */
714
715 dev = search_device(flag, devname);
716
717 if (dev)
718 return console_setfile(file, dev);
719
720 return -1;
721 }
722
console_update_silent(void)723 static void console_update_silent(void)
724 {
725 #ifdef CONFIG_SILENT_CONSOLE
726 if (env_get("silent") != NULL)
727 gd->flags |= GD_FLG_SILENT;
728 else
729 gd->flags &= ~GD_FLG_SILENT;
730 #endif
731 }
732
console_announce_r(void)733 int console_announce_r(void)
734 {
735 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
736 char buf[DISPLAY_OPTIONS_BANNER_LENGTH];
737
738 display_options_get_banner(false, buf, sizeof(buf));
739
740 console_puts_noserial(stdout, buf);
741 #endif
742
743 return 0;
744 }
745
746 /* Called before relocation - use serial functions */
console_init_f(void)747 int console_init_f(void)
748 {
749 gd->have_console = 1;
750
751 console_update_silent();
752
753 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
754
755 return 0;
756 }
757
stdio_print_current_devices(void)758 void stdio_print_current_devices(void)
759 {
760 /* Print information */
761 puts("In: ");
762 if (stdio_devices[stdin] == NULL) {
763 puts("No input devices available!\n");
764 } else {
765 printf ("%s\n", stdio_devices[stdin]->name);
766 }
767
768 puts("Out: ");
769 if (stdio_devices[stdout] == NULL) {
770 puts("No output devices available!\n");
771 } else {
772 printf ("%s\n", stdio_devices[stdout]->name);
773 }
774
775 puts("Err: ");
776 if (stdio_devices[stderr] == NULL) {
777 puts("No error devices available!\n");
778 } else {
779 printf ("%s\n", stdio_devices[stderr]->name);
780 }
781 }
782
783 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
784 /* Called after the relocation - use desired console functions */
console_init_r(void)785 int console_init_r(void)
786 {
787 char *stdinname, *stdoutname, *stderrname;
788 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
789 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
790 int i;
791 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
792 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
793 int iomux_err = 0;
794 #endif
795
796 /* set default handlers at first */
797 gd->jt->getc = serial_getc;
798 gd->jt->tstc = serial_tstc;
799 gd->jt->putc = serial_putc;
800 gd->jt->puts = serial_puts;
801 gd->jt->printf = serial_printf;
802
803 /* stdin stdout and stderr are in environment */
804 /* scan for it */
805 stdinname = env_get("stdin");
806 stdoutname = env_get("stdout");
807 stderrname = env_get("stderr");
808
809 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
810 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
811 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
812 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
813 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
814 iomux_err = iomux_doenv(stdin, stdinname);
815 iomux_err += iomux_doenv(stdout, stdoutname);
816 iomux_err += iomux_doenv(stderr, stderrname);
817 if (!iomux_err)
818 /* Successful, so skip all the code below. */
819 goto done;
820 #endif
821 }
822 /* if the devices are overwritten or not found, use default device */
823 if (inputdev == NULL) {
824 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
825 }
826 if (outputdev == NULL) {
827 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
828 }
829 if (errdev == NULL) {
830 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
831 }
832 /* Initializes output console first */
833 if (outputdev != NULL) {
834 /* need to set a console if not done above. */
835 console_doenv(stdout, outputdev);
836 }
837 if (errdev != NULL) {
838 /* need to set a console if not done above. */
839 console_doenv(stderr, errdev);
840 }
841 if (inputdev != NULL) {
842 /* need to set a console if not done above. */
843 console_doenv(stdin, inputdev);
844 }
845
846 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
847 done:
848 #endif
849
850 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
851 stdio_print_current_devices();
852 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
853 #ifdef CONFIG_VIDCONSOLE_AS_LCD
854 if (strstr(stdoutname, "lcd"))
855 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n");
856 #endif
857
858 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
859 /* set the environment variables (will overwrite previous env settings) */
860 for (i = 0; i < MAX_FILES; i++) {
861 env_set(stdio_names[i], stdio_devices[i]->name);
862 }
863 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
864
865 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
866
867 #if 0
868 /* If nothing usable installed, use only the initial console */
869 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
870 return 0;
871 #endif
872 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
873 return 0;
874 }
875
876 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
877
878 /* Called after the relocation - use desired console functions */
console_init_r(void)879 int console_init_r(void)
880 {
881 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
882 int i;
883 struct list_head *list = stdio_get_list();
884 struct list_head *pos;
885 struct stdio_dev *dev;
886
887 console_update_silent();
888
889 #ifdef CONFIG_SPLASH_SCREEN
890 /*
891 * suppress all output if splash screen is enabled and we have
892 * a bmp to display. We redirect the output from frame buffer
893 * console to serial console in this case or suppress it if
894 * "silent" mode was requested.
895 */
896 if (env_get("splashimage") != NULL) {
897 if (!(gd->flags & GD_FLG_SILENT))
898 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
899 }
900 #endif
901
902 /* Scan devices looking for input and output devices */
903 list_for_each(pos, list) {
904 dev = list_entry(pos, struct stdio_dev, list);
905
906 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
907 inputdev = dev;
908 }
909 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
910 outputdev = dev;
911 }
912 if(inputdev && outputdev)
913 break;
914 }
915
916 /* Initializes output console first */
917 if (outputdev != NULL) {
918 console_setfile(stdout, outputdev);
919 console_setfile(stderr, outputdev);
920 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
921 console_devices[stdout][0] = outputdev;
922 console_devices[stderr][0] = outputdev;
923 #endif
924 }
925
926 /* Initializes input console */
927 if (inputdev != NULL) {
928 console_setfile(stdin, inputdev);
929 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
930 console_devices[stdin][0] = inputdev;
931 #endif
932 }
933
934 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
935 stdio_print_current_devices();
936 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
937
938 /* Setting environment variables */
939 for (i = 0; i < MAX_FILES; i++) {
940 env_set(stdio_names[i], stdio_devices[i]->name);
941 }
942
943 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
944
945 #if 0
946 /* If nothing usable installed, use only the initial console */
947 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
948 return 0;
949 #endif
950 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
951 return 0;
952 }
953
954 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
955