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
200 disable_ctrlc(1);
201 for (i = 0; i < cd_count[file]; i++) {
202 dev = console_devices[file][i];
203 if (dev->tstc != NULL) {
204 ret = dev->tstc(dev);
205 if (ret > 0) {
206 tstcdev = dev;
207 disable_ctrlc(0);
208 return ret;
209 }
210 }
211 }
212 disable_ctrlc(0);
213
214 return 0;
215 }
216
console_putc(int file,const char c)217 static void console_putc(int file, const char c)
218 {
219 int i;
220 struct stdio_dev *dev;
221
222 for (i = 0; i < cd_count[file]; i++) {
223 dev = console_devices[file][i];
224 if (dev->putc != NULL)
225 dev->putc(dev, c);
226 }
227 }
228
console_puts_noserial(int file,const char * s)229 static void console_puts_noserial(int file, const char *s)
230 {
231 int i;
232 struct stdio_dev *dev;
233
234 for (i = 0; i < cd_count[file]; i++) {
235 dev = console_devices[file][i];
236 if (dev->puts != NULL && !console_dev_is_serial(dev))
237 dev->puts(dev, s);
238 }
239 }
240
console_puts(int file,const char * s)241 static void console_puts(int file, const char *s)
242 {
243 int i;
244 struct stdio_dev *dev;
245
246 for (i = 0; i < cd_count[file]; i++) {
247 dev = console_devices[file][i];
248 if (dev->puts != NULL)
249 dev->puts(dev, s);
250 }
251 }
252
console_doenv(int file,struct stdio_dev * dev)253 static inline void console_doenv(int file, struct stdio_dev *dev)
254 {
255 iomux_doenv(file, dev->name);
256 }
257 #else
console_getc(int file)258 static inline int console_getc(int file)
259 {
260 return stdio_devices[file]->getc(stdio_devices[file]);
261 }
262
console_tstc(int file)263 static inline int console_tstc(int file)
264 {
265 return stdio_devices[file]->tstc(stdio_devices[file]);
266 }
267
console_putc(int file,const char c)268 static inline void console_putc(int file, const char c)
269 {
270 stdio_devices[file]->putc(stdio_devices[file], c);
271 }
272
console_puts_noserial(int file,const char * s)273 static inline void console_puts_noserial(int file, const char *s)
274 {
275 if (!console_dev_is_serial(stdio_devices[file]))
276 stdio_devices[file]->puts(stdio_devices[file], s);
277 }
278
console_puts(int file,const char * s)279 static inline void console_puts(int file, const char *s)
280 {
281 stdio_devices[file]->puts(stdio_devices[file], s);
282 }
283
console_doenv(int file,struct stdio_dev * dev)284 static inline void console_doenv(int file, struct stdio_dev *dev)
285 {
286 console_setfile(file, dev);
287 }
288 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */
289
290 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
291
serial_printf(const char * fmt,...)292 int serial_printf(const char *fmt, ...)
293 {
294 va_list args;
295 uint i;
296 char printbuffer[CONFIG_SYS_PBSIZE];
297
298 va_start(args, fmt);
299
300 /* For this to work, printbuffer must be larger than
301 * anything we ever want to print.
302 */
303 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
304 va_end(args);
305
306 serial_puts(printbuffer);
307 return i;
308 }
309
fgetc(int file)310 int fgetc(int file)
311 {
312 if (file < MAX_FILES) {
313 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
314 /*
315 * Effectively poll for input wherever it may be available.
316 */
317 for (;;) {
318 WATCHDOG_RESET();
319 /*
320 * Upper layer may have already called tstc() so
321 * check for that first.
322 */
323 if (tstcdev != NULL)
324 return console_getc(file);
325 console_tstc(file);
326 #ifdef CONFIG_WATCHDOG
327 /*
328 * If the watchdog must be rate-limited then it should
329 * already be handled in board-specific code.
330 */
331 udelay(1);
332 #endif
333 }
334 #else
335 return console_getc(file);
336 #endif
337 }
338
339 return -1;
340 }
341
ftstc(int file)342 int ftstc(int file)
343 {
344 if (file < MAX_FILES)
345 return console_tstc(file);
346
347 return -1;
348 }
349
fputc(int file,const char c)350 void fputc(int file, const char c)
351 {
352 if (file < MAX_FILES)
353 console_putc(file, c);
354 }
355
fputs(int file,const char * s)356 void fputs(int file, const char *s)
357 {
358 if (file < MAX_FILES)
359 console_puts(file, s);
360 }
361
fprintf(int file,const char * fmt,...)362 int fprintf(int file, const char *fmt, ...)
363 {
364 va_list args;
365 uint i;
366 char printbuffer[CONFIG_SYS_PBSIZE];
367
368 va_start(args, fmt);
369
370 /* For this to work, printbuffer must be larger than
371 * anything we ever want to print.
372 */
373 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
374 va_end(args);
375
376 /* Send to desired file */
377 fputs(file, printbuffer);
378 return i;
379 }
380
381 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
382
getc(void)383 int getc(void)
384 {
385 #ifdef CONFIG_DISABLE_CONSOLE
386 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
387 return 0;
388 #endif
389
390 if (!gd->have_console)
391 return 0;
392
393 #ifdef CONFIG_CONSOLE_RECORD
394 if (gd->console_in.start) {
395 int ch;
396
397 ch = membuff_getbyte(&gd->console_in);
398 if (ch != -1)
399 return 1;
400 }
401 #endif
402 if (gd->flags & GD_FLG_DEVINIT) {
403 /* Get from the standard input */
404 return fgetc(stdin);
405 }
406
407 /* Send directly to the handler */
408 return serial_getc();
409 }
410
tstc(void)411 int tstc(void)
412 {
413 #ifdef CONFIG_DISABLE_CONSOLE
414 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
415 return 0;
416 #endif
417
418 if (!gd->have_console)
419 return 0;
420 #ifdef CONFIG_CONSOLE_RECORD
421 if (gd->console_in.start) {
422 if (membuff_peekbyte(&gd->console_in) != -1)
423 return 1;
424 }
425 #endif
426 if (gd->flags & GD_FLG_DEVINIT) {
427 /* Test the standard input */
428 return ftstc(stdin);
429 }
430
431 /* Send directly to the handler */
432 return serial_tstc();
433 }
434
435 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
436 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
437
438 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
439 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
440
pre_console_putc(const char c)441 static void pre_console_putc(const char c)
442 {
443 char *buffer;
444
445 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
446
447 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
448
449 unmap_sysmem(buffer);
450 }
451
pre_console_puts(const char * s)452 static void pre_console_puts(const char *s)
453 {
454 while (*s)
455 pre_console_putc(*s++);
456 }
457
print_pre_console_buffer(int flushpoint)458 static void print_pre_console_buffer(int flushpoint)
459 {
460 unsigned long in = 0, out = 0;
461 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
462 char *buf_in;
463
464 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
465 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
466 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
467
468 while (in < gd->precon_buf_idx)
469 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
470 unmap_sysmem(buf_in);
471
472 buf_out[out] = 0;
473
474 switch (flushpoint) {
475 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
476 puts(buf_out);
477 break;
478 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
479 console_puts_noserial(stdout, buf_out);
480 break;
481 }
482 }
483 #else
pre_console_putc(const char c)484 static inline void pre_console_putc(const char c) {}
pre_console_puts(const char * s)485 static inline void pre_console_puts(const char *s) {}
print_pre_console_buffer(int flushpoint)486 static inline void print_pre_console_buffer(int flushpoint) {}
487 #endif
488
putc(const char c)489 void putc(const char c)
490 {
491 #ifdef CONFIG_SANDBOX
492 /* sandbox can send characters to stdout before it has a console */
493 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
494 os_putc(c);
495 return;
496 }
497 #endif
498 #ifdef CONFIG_DEBUG_UART
499 /* if we don't have a console yet, use the debug UART */
500 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
501 printch(c);
502 return;
503 }
504 #endif
505 if (!gd)
506 return;
507 #ifdef CONFIG_CONSOLE_RECORD
508 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
509 membuff_putbyte(&gd->console_out, c);
510 #endif
511 #ifdef CONFIG_SILENT_CONSOLE
512 if (gd->flags & GD_FLG_SILENT)
513 return;
514 #endif
515
516 #ifdef CONFIG_DISABLE_CONSOLE
517 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
518 return;
519 #endif
520
521 if (!gd->have_console)
522 return pre_console_putc(c);
523
524 if (gd->flags & GD_FLG_DEVINIT) {
525 /* Send to the standard output */
526 fputc(stdout, c);
527 } else {
528 /* Send directly to the handler */
529 pre_console_putc(c);
530 serial_putc(c);
531 }
532 }
533
puts(const char * s)534 void puts(const char *s)
535 {
536 #ifdef CONFIG_DEBUG_UART
537 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
538 while (*s) {
539 int ch = *s++;
540
541 printch(ch);
542 }
543 return;
544 }
545 #endif
546 if (!gd)
547 return;
548 #ifdef CONFIG_CONSOLE_RECORD
549 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
550 membuff_put(&gd->console_out, s, strlen(s));
551 #endif
552 #ifdef CONFIG_SILENT_CONSOLE
553 if (gd->flags & GD_FLG_SILENT)
554 return;
555 #endif
556
557 #ifdef CONFIG_DISABLE_CONSOLE
558 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
559 return;
560 #endif
561
562 if (!gd->have_console)
563 return pre_console_puts(s);
564
565 if (gd->flags & GD_FLG_DEVINIT) {
566 /* Send to the standard output */
567 fputs(stdout, s);
568 } else {
569 /* Send directly to the handler */
570 pre_console_puts(s);
571 serial_puts(s);
572 }
573 }
574
575 #ifdef CONFIG_CONSOLE_RECORD
console_record_init(void)576 int console_record_init(void)
577 {
578 int ret;
579
580 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE);
581 if (ret)
582 return ret;
583 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE);
584
585 return ret;
586 }
587
console_record_reset(void)588 void console_record_reset(void)
589 {
590 membuff_purge(&gd->console_out);
591 membuff_purge(&gd->console_in);
592 }
593
console_record_reset_enable(void)594 void console_record_reset_enable(void)
595 {
596 console_record_reset();
597 gd->flags |= GD_FLG_RECORD;
598 }
599 #endif
600
601 /* test if ctrl-c was pressed */
602 static int ctrlc_disabled = 0; /* see disable_ctrl() */
603 static int ctrlc_was_pressed = 0;
ctrlc(void)604 int ctrlc(void)
605 {
606 #ifndef CONFIG_SANDBOX
607 if (!ctrlc_disabled && gd->have_console) {
608 if (tstc()) {
609 switch (getc()) {
610 case 0x03: /* ^C - Control C */
611 ctrlc_was_pressed = 1;
612 return 1;
613 default:
614 break;
615 }
616 }
617 }
618 #endif
619
620 return 0;
621 }
622 /* Reads user's confirmation.
623 Returns 1 if user's input is "y", "Y", "yes" or "YES"
624 */
confirm_yesno(void)625 int confirm_yesno(void)
626 {
627 int i;
628 char str_input[5];
629
630 /* Flush input */
631 while (tstc())
632 getc();
633 i = 0;
634 while (i < sizeof(str_input)) {
635 str_input[i] = getc();
636 putc(str_input[i]);
637 if (str_input[i] == '\r')
638 break;
639 i++;
640 }
641 putc('\n');
642 if (strncmp(str_input, "y\r", 2) == 0 ||
643 strncmp(str_input, "Y\r", 2) == 0 ||
644 strncmp(str_input, "yes\r", 4) == 0 ||
645 strncmp(str_input, "YES\r", 4) == 0)
646 return 1;
647 return 0;
648 }
649 /* pass 1 to disable ctrlc() checking, 0 to enable.
650 * returns previous state
651 */
disable_ctrlc(int disable)652 int disable_ctrlc(int disable)
653 {
654 int prev = ctrlc_disabled; /* save previous state */
655
656 ctrlc_disabled = disable;
657 return prev;
658 }
659
had_ctrlc(void)660 int had_ctrlc (void)
661 {
662 return ctrlc_was_pressed;
663 }
664
clear_ctrlc(void)665 void clear_ctrlc(void)
666 {
667 ctrlc_was_pressed = 0;
668 }
669
670 /** U-Boot INIT FUNCTIONS *************************************************/
671
search_device(int flags,const char * name)672 struct stdio_dev *search_device(int flags, const char *name)
673 {
674 struct stdio_dev *dev;
675
676 dev = stdio_get_by_name(name);
677 #ifdef CONFIG_VIDCONSOLE_AS_LCD
678 if (!dev && !strcmp(name, "lcd"))
679 dev = stdio_get_by_name("vidconsole");
680 #endif
681
682 if (dev && (dev->flags & flags))
683 return dev;
684
685 return NULL;
686 }
687
console_assign(int file,const char * devname)688 int console_assign(int file, const char *devname)
689 {
690 int flag;
691 struct stdio_dev *dev;
692
693 /* Check for valid file */
694 switch (file) {
695 case stdin:
696 flag = DEV_FLAGS_INPUT;
697 break;
698 case stdout:
699 case stderr:
700 flag = DEV_FLAGS_OUTPUT;
701 break;
702 default:
703 return -1;
704 }
705
706 /* Check for valid device name */
707
708 dev = search_device(flag, devname);
709
710 if (dev)
711 return console_setfile(file, dev);
712
713 return -1;
714 }
715
console_update_silent(void)716 static void console_update_silent(void)
717 {
718 #ifdef CONFIG_SILENT_CONSOLE
719 if (env_get("silent") != NULL)
720 gd->flags |= GD_FLG_SILENT;
721 else
722 gd->flags &= ~GD_FLG_SILENT;
723 #endif
724 }
725
console_announce_r(void)726 int console_announce_r(void)
727 {
728 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
729 char buf[DISPLAY_OPTIONS_BANNER_LENGTH];
730
731 display_options_get_banner(false, buf, sizeof(buf));
732
733 console_puts_noserial(stdout, buf);
734 #endif
735
736 return 0;
737 }
738
739 /* Called before relocation - use serial functions */
console_init_f(void)740 int console_init_f(void)
741 {
742 gd->have_console = 1;
743
744 console_update_silent();
745
746 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
747
748 return 0;
749 }
750
stdio_print_current_devices(void)751 void stdio_print_current_devices(void)
752 {
753 /* Print information */
754 puts("In: ");
755 if (stdio_devices[stdin] == NULL) {
756 puts("No input devices available!\n");
757 } else {
758 printf ("%s\n", stdio_devices[stdin]->name);
759 }
760
761 puts("Out: ");
762 if (stdio_devices[stdout] == NULL) {
763 puts("No output devices available!\n");
764 } else {
765 printf ("%s\n", stdio_devices[stdout]->name);
766 }
767
768 puts("Err: ");
769 if (stdio_devices[stderr] == NULL) {
770 puts("No error devices available!\n");
771 } else {
772 printf ("%s\n", stdio_devices[stderr]->name);
773 }
774 }
775
776 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
777 /* Called after the relocation - use desired console functions */
console_init_r(void)778 int console_init_r(void)
779 {
780 char *stdinname, *stdoutname, *stderrname;
781 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
782 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
783 int i;
784 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
785 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
786 int iomux_err = 0;
787 #endif
788
789 /* set default handlers at first */
790 gd->jt->getc = serial_getc;
791 gd->jt->tstc = serial_tstc;
792 gd->jt->putc = serial_putc;
793 gd->jt->puts = serial_puts;
794 gd->jt->printf = serial_printf;
795
796 /* stdin stdout and stderr are in environment */
797 /* scan for it */
798 stdinname = env_get("stdin");
799 stdoutname = env_get("stdout");
800 stderrname = env_get("stderr");
801
802 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
803 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
804 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
805 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
806 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
807 iomux_err = iomux_doenv(stdin, stdinname);
808 iomux_err += iomux_doenv(stdout, stdoutname);
809 iomux_err += iomux_doenv(stderr, stderrname);
810 if (!iomux_err)
811 /* Successful, so skip all the code below. */
812 goto done;
813 #endif
814 }
815 /* if the devices are overwritten or not found, use default device */
816 if (inputdev == NULL) {
817 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
818 }
819 if (outputdev == NULL) {
820 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
821 }
822 if (errdev == NULL) {
823 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
824 }
825 /* Initializes output console first */
826 if (outputdev != NULL) {
827 /* need to set a console if not done above. */
828 console_doenv(stdout, outputdev);
829 }
830 if (errdev != NULL) {
831 /* need to set a console if not done above. */
832 console_doenv(stderr, errdev);
833 }
834 if (inputdev != NULL) {
835 /* need to set a console if not done above. */
836 console_doenv(stdin, inputdev);
837 }
838
839 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
840 done:
841 #endif
842
843 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
844 stdio_print_current_devices();
845 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
846 #ifdef CONFIG_VIDCONSOLE_AS_LCD
847 if (strstr(stdoutname, "lcd"))
848 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n");
849 #endif
850
851 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
852 /* set the environment variables (will overwrite previous env settings) */
853 for (i = 0; i < MAX_FILES; i++) {
854 env_set(stdio_names[i], stdio_devices[i]->name);
855 }
856 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
857
858 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
859
860 #if 0
861 /* If nothing usable installed, use only the initial console */
862 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
863 return 0;
864 #endif
865 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
866 return 0;
867 }
868
869 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
870
871 /* Called after the relocation - use desired console functions */
console_init_r(void)872 int console_init_r(void)
873 {
874 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
875 int i;
876 struct list_head *list = stdio_get_list();
877 struct list_head *pos;
878 struct stdio_dev *dev;
879
880 console_update_silent();
881
882 #ifdef CONFIG_SPLASH_SCREEN
883 /*
884 * suppress all output if splash screen is enabled and we have
885 * a bmp to display. We redirect the output from frame buffer
886 * console to serial console in this case or suppress it if
887 * "silent" mode was requested.
888 */
889 if (env_get("splashimage") != NULL) {
890 if (!(gd->flags & GD_FLG_SILENT))
891 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
892 }
893 #endif
894
895 /* Scan devices looking for input and output devices */
896 list_for_each(pos, list) {
897 dev = list_entry(pos, struct stdio_dev, list);
898
899 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
900 inputdev = dev;
901 }
902 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
903 outputdev = dev;
904 }
905 if(inputdev && outputdev)
906 break;
907 }
908
909 /* Initializes output console first */
910 if (outputdev != NULL) {
911 console_setfile(stdout, outputdev);
912 console_setfile(stderr, outputdev);
913 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
914 console_devices[stdout][0] = outputdev;
915 console_devices[stderr][0] = outputdev;
916 #endif
917 }
918
919 /* Initializes input console */
920 if (inputdev != NULL) {
921 console_setfile(stdin, inputdev);
922 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
923 console_devices[stdin][0] = inputdev;
924 #endif
925 }
926
927 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
928 stdio_print_current_devices();
929 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
930
931 /* Setting environment variables */
932 for (i = 0; i < MAX_FILES; i++) {
933 env_set(stdio_names[i], stdio_devices[i]->name);
934 }
935
936 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
937
938 #if 0
939 /* If nothing usable installed, use only the initial console */
940 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
941 return 0;
942 #endif
943 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
944 return 0;
945 }
946
947 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
948