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 <env.h>
12 #include <stdarg.h>
13 #include <iomux.h>
14 #include <malloc.h>
15 #include <mapmem.h>
16 #include <os.h>
17 #include <serial.h>
18 #include <stdio_dev.h>
19 #include <exports.h>
20 #include <env_internal.h>
21 #include <watchdog.h>
22
23 DECLARE_GLOBAL_DATA_PTR;
24
on_console(const char * name,const char * value,enum env_op op,int flags)25 static int on_console(const char *name, const char *value, enum env_op op,
26 int flags)
27 {
28 int console = -1;
29
30 /* Check for console redirection */
31 if (strcmp(name, "stdin") == 0)
32 console = stdin;
33 else if (strcmp(name, "stdout") == 0)
34 console = stdout;
35 else if (strcmp(name, "stderr") == 0)
36 console = stderr;
37
38 /* if not actually setting a console variable, we don't care */
39 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
40 return 0;
41
42 switch (op) {
43 case env_op_create:
44 case env_op_overwrite:
45
46 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
47 if (iomux_doenv(console, value))
48 return 1;
49 #else
50 /* Try assigning specified device */
51 if (console_assign(console, value) < 0)
52 return 1;
53 #endif
54 return 0;
55
56 case env_op_delete:
57 if ((flags & H_FORCE) == 0)
58 printf("Can't delete \"%s\"\n", name);
59 return 1;
60
61 default:
62 return 0;
63 }
64 }
65 U_BOOT_ENV_CALLBACK(console, on_console);
66
67 #ifdef CONFIG_SILENT_CONSOLE
on_silent(const char * name,const char * value,enum env_op op,int flags)68 static int on_silent(const char *name, const char *value, enum env_op op,
69 int flags)
70 {
71 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET)
72 if (flags & H_INTERACTIVE)
73 return 0;
74 #endif
75 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC)
76 if ((flags & H_INTERACTIVE) == 0)
77 return 0;
78 #endif
79
80 if (value != NULL)
81 gd->flags |= GD_FLG_SILENT;
82 else
83 gd->flags &= ~GD_FLG_SILENT;
84
85 return 0;
86 }
87 U_BOOT_ENV_CALLBACK(silent, on_silent);
88 #endif
89
90 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
91 /*
92 * if overwrite_console returns 1, the stdin, stderr and stdout
93 * are switched to the serial port, else the settings in the
94 * environment are used
95 */
96 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
97 extern int overwrite_console(void);
98 #define OVERWRITE_CONSOLE overwrite_console()
99 #else
100 #define OVERWRITE_CONSOLE 0
101 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
102
103 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
104
console_setfile(int file,struct stdio_dev * dev)105 static int console_setfile(int file, struct stdio_dev * dev)
106 {
107 int error = 0;
108
109 if (dev == NULL)
110 return -1;
111
112 switch (file) {
113 case stdin:
114 case stdout:
115 case stderr:
116 /* Start new device */
117 if (dev->start) {
118 error = dev->start(dev);
119 /* If it's not started dont use it */
120 if (error < 0)
121 break;
122 }
123
124 /* Assign the new device (leaving the existing one started) */
125 stdio_devices[file] = dev;
126
127 /*
128 * Update monitor functions
129 * (to use the console stuff by other applications)
130 */
131 switch (file) {
132 case stdin:
133 gd->jt->getc = getc;
134 gd->jt->tstc = tstc;
135 break;
136 case stdout:
137 gd->jt->putc = putc;
138 gd->jt->puts = puts;
139 gd->jt->printf = printf;
140 break;
141 }
142 break;
143
144 default: /* Invalid file ID */
145 error = -1;
146 }
147 return error;
148 }
149
150 /**
151 * console_dev_is_serial() - Check if a stdio device is a serial device
152 *
153 * @sdev: Device to check
154 * @return true if this device is in the serial uclass (or for pre-driver-model,
155 * whether it is called "serial".
156 */
console_dev_is_serial(struct stdio_dev * sdev)157 static bool console_dev_is_serial(struct stdio_dev *sdev)
158 {
159 bool is_serial;
160
161 #ifdef CONFIG_DM_SERIAL
162 if (sdev->flags & DEV_FLAGS_DM) {
163 struct udevice *dev = sdev->priv;
164
165 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL;
166 } else
167 #endif
168 is_serial = !strcmp(sdev->name, "serial");
169
170 return is_serial;
171 }
172
173 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
174 /** Console I/O multiplexing *******************************************/
175
176 static struct stdio_dev *tstcdev;
177 struct stdio_dev **console_devices[MAX_FILES];
178 int cd_count[MAX_FILES];
179
180 /*
181 * This depends on tstc() always being called before getc().
182 * This is guaranteed to be true because this routine is called
183 * only from fgetc() which assures it.
184 * No attempt is made to demultiplex multiple input sources.
185 */
console_getc(int file)186 static int console_getc(int file)
187 {
188 unsigned char ret;
189
190 /* This is never called with testcdev == NULL */
191 ret = tstcdev->getc(tstcdev);
192 tstcdev = NULL;
193 return ret;
194 }
195
console_tstc(int file)196 static int console_tstc(int file)
197 {
198 int i, ret;
199 struct stdio_dev *dev;
200 int prev;
201
202 prev = disable_ctrlc(1);
203 for (i = 0; i < cd_count[file]; i++) {
204 dev = console_devices[file][i];
205 if (dev->tstc != NULL) {
206 ret = dev->tstc(dev);
207 if (ret > 0) {
208 tstcdev = dev;
209 disable_ctrlc(prev);
210 return ret;
211 }
212 }
213 }
214 disable_ctrlc(prev);
215
216 return 0;
217 }
218
console_putc(int file,const char c)219 static void console_putc(int file, const char c)
220 {
221 int i;
222 struct stdio_dev *dev;
223
224 for (i = 0; i < cd_count[file]; i++) {
225 dev = console_devices[file][i];
226 if (dev->putc != NULL)
227 dev->putc(dev, c);
228 }
229 }
230
console_puts_noserial(int file,const char * s)231 static void console_puts_noserial(int file, const char *s)
232 {
233 int i;
234 struct stdio_dev *dev;
235
236 for (i = 0; i < cd_count[file]; i++) {
237 dev = console_devices[file][i];
238 if (dev->puts != NULL && !console_dev_is_serial(dev))
239 dev->puts(dev, s);
240 }
241 }
242
console_puts(int file,const char * s)243 static void console_puts(int file, const char *s)
244 {
245 int i;
246 struct stdio_dev *dev;
247
248 for (i = 0; i < cd_count[file]; i++) {
249 dev = console_devices[file][i];
250 if (dev->puts != NULL)
251 dev->puts(dev, s);
252 }
253 }
254
255 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
console_doenv(int file,struct stdio_dev * dev)256 static inline void console_doenv(int file, struct stdio_dev *dev)
257 {
258 iomux_doenv(file, dev->name);
259 }
260 #endif
261 #else
console_getc(int file)262 static inline int console_getc(int file)
263 {
264 return stdio_devices[file]->getc(stdio_devices[file]);
265 }
266
console_tstc(int file)267 static inline int console_tstc(int file)
268 {
269 return stdio_devices[file]->tstc(stdio_devices[file]);
270 }
271
console_putc(int file,const char c)272 static inline void console_putc(int file, const char c)
273 {
274 stdio_devices[file]->putc(stdio_devices[file], c);
275 }
276
console_puts_noserial(int file,const char * s)277 static inline void console_puts_noserial(int file, const char *s)
278 {
279 if (!console_dev_is_serial(stdio_devices[file]))
280 stdio_devices[file]->puts(stdio_devices[file], s);
281 }
282
console_puts(int file,const char * s)283 static inline void console_puts(int file, const char *s)
284 {
285 stdio_devices[file]->puts(stdio_devices[file], s);
286 }
287
288 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
console_doenv(int file,struct stdio_dev * dev)289 static inline void console_doenv(int file, struct stdio_dev *dev)
290 {
291 console_setfile(file, dev);
292 }
293 #endif
294 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */
295
296 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
297
serial_printf(const char * fmt,...)298 int serial_printf(const char *fmt, ...)
299 {
300 va_list args;
301 uint i;
302 char printbuffer[CONFIG_SYS_PBSIZE];
303
304 va_start(args, fmt);
305
306 /* For this to work, printbuffer must be larger than
307 * anything we ever want to print.
308 */
309 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
310 va_end(args);
311
312 serial_puts(printbuffer);
313 return i;
314 }
315
fgetc(int file)316 int fgetc(int file)
317 {
318 if (file < MAX_FILES) {
319 /*
320 * Effectively poll for input wherever it may be available.
321 */
322 for (;;) {
323 WATCHDOG_RESET();
324 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
325 /*
326 * Upper layer may have already called tstc() so
327 * check for that first.
328 */
329 if (tstcdev != NULL)
330 return console_getc(file);
331 console_tstc(file);
332 #else
333 if (console_tstc(file))
334 return console_getc(file);
335 #endif
336 #ifdef CONFIG_WATCHDOG
337 /*
338 * If the watchdog must be rate-limited then it should
339 * already be handled in board-specific code.
340 */
341 udelay(1);
342 #endif
343 }
344 }
345
346 return -1;
347 }
348
ftstc(int file)349 int ftstc(int file)
350 {
351 if (file < MAX_FILES)
352 return console_tstc(file);
353
354 return -1;
355 }
356
fputc(int file,const char c)357 void fputc(int file, const char c)
358 {
359 if (file < MAX_FILES)
360 console_putc(file, c);
361 }
362
fputs(int file,const char * s)363 void fputs(int file, const char *s)
364 {
365 if (file < MAX_FILES)
366 console_puts(file, s);
367 }
368
fprintf(int file,const char * fmt,...)369 int fprintf(int file, const char *fmt, ...)
370 {
371 va_list args;
372 uint i;
373 char printbuffer[CONFIG_SYS_PBSIZE];
374
375 va_start(args, fmt);
376
377 /* For this to work, printbuffer must be larger than
378 * anything we ever want to print.
379 */
380 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
381 va_end(args);
382
383 /* Send to desired file */
384 fputs(file, printbuffer);
385 return i;
386 }
387
388 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
389
getc(void)390 int getc(void)
391 {
392 #ifdef CONFIG_DISABLE_CONSOLE
393 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
394 return 0;
395 #endif
396
397 if (!gd->have_console)
398 return 0;
399
400 #ifdef CONFIG_CONSOLE_RECORD
401 if (gd->console_in.start) {
402 int ch;
403
404 ch = membuff_getbyte(&gd->console_in);
405 if (ch != -1)
406 return 1;
407 }
408 #endif
409 if (gd->flags & GD_FLG_DEVINIT) {
410 /* Get from the standard input */
411 return fgetc(stdin);
412 }
413
414 /* Send directly to the handler */
415 return serial_getc();
416 }
417
tstc(void)418 int tstc(void)
419 {
420 #ifdef CONFIG_DISABLE_CONSOLE
421 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
422 return 0;
423 #endif
424
425 if (!gd->have_console)
426 return 0;
427 #ifdef CONFIG_CONSOLE_RECORD
428 if (gd->console_in.start) {
429 if (membuff_peekbyte(&gd->console_in) != -1)
430 return 1;
431 }
432 #endif
433 if (gd->flags & GD_FLG_DEVINIT) {
434 /* Test the standard input */
435 return ftstc(stdin);
436 }
437
438 /* Send directly to the handler */
439 return serial_tstc();
440 }
441
442 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
443 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
444
445 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
446 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
447
pre_console_putc(const char c)448 static void pre_console_putc(const char c)
449 {
450 char *buffer;
451
452 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
453
454 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
455
456 unmap_sysmem(buffer);
457 }
458
pre_console_puts(const char * s)459 static void pre_console_puts(const char *s)
460 {
461 while (*s)
462 pre_console_putc(*s++);
463 }
464
print_pre_console_buffer(int flushpoint)465 static void print_pre_console_buffer(int flushpoint)
466 {
467 unsigned long in = 0, out = 0;
468 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
469 char *buf_in;
470
471 #ifdef CONFIG_SILENT_CONSOLE
472 if (gd->flags & GD_FLG_SILENT)
473 return;
474 #endif
475
476 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
477 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
478 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
479
480 while (in < gd->precon_buf_idx)
481 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
482 unmap_sysmem(buf_in);
483
484 buf_out[out] = 0;
485
486 switch (flushpoint) {
487 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
488 puts(buf_out);
489 break;
490 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
491 console_puts_noserial(stdout, buf_out);
492 break;
493 }
494 }
495 #else
pre_console_putc(const char c)496 static inline void pre_console_putc(const char c) {}
pre_console_puts(const char * s)497 static inline void pre_console_puts(const char *s) {}
print_pre_console_buffer(int flushpoint)498 static inline void print_pre_console_buffer(int flushpoint) {}
499 #endif
500
putc(const char c)501 void putc(const char c)
502 {
503 #ifdef CONFIG_SANDBOX
504 /* sandbox can send characters to stdout before it has a console */
505 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
506 os_putc(c);
507 return;
508 }
509 #endif
510 #ifdef CONFIG_DEBUG_UART
511 /* if we don't have a console yet, use the debug UART */
512 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
513 printch(c);
514 return;
515 }
516 #endif
517 if (!gd)
518 return;
519 #ifdef CONFIG_CONSOLE_RECORD
520 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
521 membuff_putbyte(&gd->console_out, c);
522 #endif
523 #ifdef CONFIG_SILENT_CONSOLE
524 if (gd->flags & GD_FLG_SILENT) {
525 if (!(gd->flags & GD_FLG_DEVINIT))
526 pre_console_putc(c);
527 return;
528 }
529 #endif
530
531 #ifdef CONFIG_DISABLE_CONSOLE
532 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
533 return;
534 #endif
535
536 if (!gd->have_console)
537 return pre_console_putc(c);
538
539 if (gd->flags & GD_FLG_DEVINIT) {
540 /* Send to the standard output */
541 fputc(stdout, c);
542 } else {
543 /* Send directly to the handler */
544 pre_console_putc(c);
545 serial_putc(c);
546 }
547 }
548
puts(const char * s)549 void puts(const char *s)
550 {
551 #ifdef CONFIG_SANDBOX
552 /* sandbox can send characters to stdout before it has a console */
553 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
554 os_puts(s);
555 return;
556 }
557 #endif
558 #ifdef CONFIG_DEBUG_UART
559 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
560 while (*s) {
561 int ch = *s++;
562
563 printch(ch);
564 }
565 return;
566 }
567 #endif
568 if (!gd)
569 return;
570 #ifdef CONFIG_CONSOLE_RECORD
571 if ((gd->flags & GD_FLG_RECORD) && gd->console_out.start)
572 membuff_put(&gd->console_out, s, strlen(s));
573 #endif
574 #ifdef CONFIG_SILENT_CONSOLE
575 if (gd->flags & GD_FLG_SILENT) {
576 if (!(gd->flags & GD_FLG_DEVINIT))
577 pre_console_puts(s);
578 return;
579 }
580 #endif
581
582 #ifdef CONFIG_DISABLE_CONSOLE
583 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
584 return;
585 #endif
586
587 if (!gd->have_console)
588 return pre_console_puts(s);
589
590 if (gd->flags & GD_FLG_DEVINIT) {
591 /* Send to the standard output */
592 fputs(stdout, s);
593 } else {
594 /* Send directly to the handler */
595 pre_console_puts(s);
596 serial_puts(s);
597 }
598 }
599
600 #ifdef CONFIG_CONSOLE_RECORD
console_record_init(void)601 int console_record_init(void)
602 {
603 int ret;
604
605 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE);
606 if (ret)
607 return ret;
608 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE);
609
610 return ret;
611 }
612
console_record_reset(void)613 void console_record_reset(void)
614 {
615 membuff_purge(&gd->console_out);
616 membuff_purge(&gd->console_in);
617 }
618
console_record_reset_enable(void)619 void console_record_reset_enable(void)
620 {
621 console_record_reset();
622 gd->flags |= GD_FLG_RECORD;
623 }
624 #endif
625
626 /* test if ctrl-c was pressed */
627 static int ctrlc_disabled = 0; /* see disable_ctrl() */
628 static int ctrlc_was_pressed = 0;
ctrlc(void)629 int ctrlc(void)
630 {
631 if (!ctrlc_disabled && gd->have_console) {
632 if (tstc()) {
633 switch (getc()) {
634 case 0x03: /* ^C - Control C */
635 ctrlc_was_pressed = 1;
636 return 1;
637 default:
638 break;
639 }
640 }
641 }
642
643 return 0;
644 }
645 /* Reads user's confirmation.
646 Returns 1 if user's input is "y", "Y", "yes" or "YES"
647 */
confirm_yesno(void)648 int confirm_yesno(void)
649 {
650 int i;
651 char str_input[5];
652
653 /* Flush input */
654 while (tstc())
655 getc();
656 i = 0;
657 while (i < sizeof(str_input)) {
658 str_input[i] = getc();
659 putc(str_input[i]);
660 if (str_input[i] == '\r')
661 break;
662 i++;
663 }
664 putc('\n');
665 if (strncmp(str_input, "y\r", 2) == 0 ||
666 strncmp(str_input, "Y\r", 2) == 0 ||
667 strncmp(str_input, "yes\r", 4) == 0 ||
668 strncmp(str_input, "YES\r", 4) == 0)
669 return 1;
670 return 0;
671 }
672 /* pass 1 to disable ctrlc() checking, 0 to enable.
673 * returns previous state
674 */
disable_ctrlc(int disable)675 int disable_ctrlc(int disable)
676 {
677 int prev = ctrlc_disabled; /* save previous state */
678
679 ctrlc_disabled = disable;
680 return prev;
681 }
682
had_ctrlc(void)683 int had_ctrlc (void)
684 {
685 return ctrlc_was_pressed;
686 }
687
clear_ctrlc(void)688 void clear_ctrlc(void)
689 {
690 ctrlc_was_pressed = 0;
691 }
692
693 /** U-Boot INIT FUNCTIONS *************************************************/
694
search_device(int flags,const char * name)695 struct stdio_dev *search_device(int flags, const char *name)
696 {
697 struct stdio_dev *dev;
698
699 dev = stdio_get_by_name(name);
700 #ifdef CONFIG_VIDCONSOLE_AS_LCD
701 if (!dev && !strcmp(name, "lcd"))
702 dev = stdio_get_by_name("vidconsole");
703 #endif
704
705 if (dev && (dev->flags & flags))
706 return dev;
707
708 return NULL;
709 }
710
console_assign(int file,const char * devname)711 int console_assign(int file, const char *devname)
712 {
713 int flag;
714 struct stdio_dev *dev;
715
716 /* Check for valid file */
717 switch (file) {
718 case stdin:
719 flag = DEV_FLAGS_INPUT;
720 break;
721 case stdout:
722 case stderr:
723 flag = DEV_FLAGS_OUTPUT;
724 break;
725 default:
726 return -1;
727 }
728
729 /* Check for valid device name */
730
731 dev = search_device(flag, devname);
732
733 if (dev)
734 return console_setfile(file, dev);
735
736 return -1;
737 }
738
739 /* return true if the 'silent' flag is removed */
console_update_silent(void)740 static bool console_update_silent(void)
741 {
742 #ifdef CONFIG_SILENT_CONSOLE
743 if (env_get("silent")) {
744 gd->flags |= GD_FLG_SILENT;
745 } else {
746 unsigned long flags = gd->flags;
747
748 gd->flags &= ~GD_FLG_SILENT;
749
750 return !!(flags & GD_FLG_SILENT);
751 }
752 #endif
753
754 return false;
755 }
756
console_announce_r(void)757 int console_announce_r(void)
758 {
759 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
760 char buf[DISPLAY_OPTIONS_BANNER_LENGTH];
761
762 display_options_get_banner(false, buf, sizeof(buf));
763
764 console_puts_noserial(stdout, buf);
765 #endif
766
767 return 0;
768 }
769
770 /* Called before relocation - use serial functions */
console_init_f(void)771 int console_init_f(void)
772 {
773 gd->have_console = 1;
774
775 console_update_silent();
776
777 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
778
779 return 0;
780 }
781
stdio_print_current_devices(void)782 void stdio_print_current_devices(void)
783 {
784 /* Print information */
785 puts("In: ");
786 if (stdio_devices[stdin] == NULL) {
787 puts("No input devices available!\n");
788 } else {
789 printf ("%s\n", stdio_devices[stdin]->name);
790 }
791
792 puts("Out: ");
793 if (stdio_devices[stdout] == NULL) {
794 puts("No output devices available!\n");
795 } else {
796 printf ("%s\n", stdio_devices[stdout]->name);
797 }
798
799 puts("Err: ");
800 if (stdio_devices[stderr] == NULL) {
801 puts("No error devices available!\n");
802 } else {
803 printf ("%s\n", stdio_devices[stderr]->name);
804 }
805 }
806
807 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
808 /* Called after the relocation - use desired console functions */
console_init_r(void)809 int console_init_r(void)
810 {
811 char *stdinname, *stdoutname, *stderrname;
812 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
813 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
814 int i;
815 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
816 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
817 int iomux_err = 0;
818 #endif
819 int flushpoint;
820
821 /* update silent for env loaded from flash (initr_env) */
822 if (console_update_silent())
823 flushpoint = PRE_CONSOLE_FLUSHPOINT1_SERIAL;
824 else
825 flushpoint = PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL;
826
827 /* set default handlers at first */
828 gd->jt->getc = serial_getc;
829 gd->jt->tstc = serial_tstc;
830 gd->jt->putc = serial_putc;
831 gd->jt->puts = serial_puts;
832 gd->jt->printf = serial_printf;
833
834 /* stdin stdout and stderr are in environment */
835 /* scan for it */
836 stdinname = env_get("stdin");
837 stdoutname = env_get("stdout");
838 stderrname = env_get("stderr");
839
840 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
841 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
842 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
843 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
844 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
845 iomux_err = iomux_doenv(stdin, stdinname);
846 iomux_err += iomux_doenv(stdout, stdoutname);
847 iomux_err += iomux_doenv(stderr, stderrname);
848 if (!iomux_err)
849 /* Successful, so skip all the code below. */
850 goto done;
851 #endif
852 }
853 /* if the devices are overwritten or not found, use default device */
854 if (inputdev == NULL) {
855 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
856 }
857 if (outputdev == NULL) {
858 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
859 }
860 if (errdev == NULL) {
861 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
862 }
863 /* Initializes output console first */
864 if (outputdev != NULL) {
865 /* need to set a console if not done above. */
866 console_doenv(stdout, outputdev);
867 }
868 if (errdev != NULL) {
869 /* need to set a console if not done above. */
870 console_doenv(stderr, errdev);
871 }
872 if (inputdev != NULL) {
873 /* need to set a console if not done above. */
874 console_doenv(stdin, inputdev);
875 }
876
877 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
878 done:
879 #endif
880
881 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
882 stdio_print_current_devices();
883 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
884 #ifdef CONFIG_VIDCONSOLE_AS_LCD
885 if (strstr(stdoutname, "lcd"))
886 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n");
887 #endif
888
889 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
890 /* set the environment variables (will overwrite previous env settings) */
891 for (i = 0; i < MAX_FILES; i++) {
892 env_set(stdio_names[i], stdio_devices[i]->name);
893 }
894 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
895
896 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
897
898 #if 0
899 /* If nothing usable installed, use only the initial console */
900 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
901 return 0;
902 #endif
903 print_pre_console_buffer(flushpoint);
904 return 0;
905 }
906
907 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
908
909 /* Called after the relocation - use desired console functions */
console_init_r(void)910 int console_init_r(void)
911 {
912 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
913 int i;
914 struct list_head *list = stdio_get_list();
915 struct list_head *pos;
916 struct stdio_dev *dev;
917 int flushpoint;
918
919 /* update silent for env loaded from flash (initr_env) */
920 if (console_update_silent())
921 flushpoint = PRE_CONSOLE_FLUSHPOINT1_SERIAL;
922 else
923 flushpoint = PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL;
924
925 #ifdef CONFIG_SPLASH_SCREEN
926 /*
927 * suppress all output if splash screen is enabled and we have
928 * a bmp to display. We redirect the output from frame buffer
929 * console to serial console in this case or suppress it if
930 * "silent" mode was requested.
931 */
932 if (env_get("splashimage") != NULL) {
933 if (!(gd->flags & GD_FLG_SILENT))
934 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
935 }
936 #endif
937
938 /* Scan devices looking for input and output devices */
939 list_for_each(pos, list) {
940 dev = list_entry(pos, struct stdio_dev, list);
941
942 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
943 inputdev = dev;
944 }
945 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
946 outputdev = dev;
947 }
948 if(inputdev && outputdev)
949 break;
950 }
951
952 /* Initializes output console first */
953 if (outputdev != NULL) {
954 console_setfile(stdout, outputdev);
955 console_setfile(stderr, outputdev);
956 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
957 console_devices[stdout][0] = outputdev;
958 console_devices[stderr][0] = outputdev;
959 #endif
960 }
961
962 /* Initializes input console */
963 if (inputdev != NULL) {
964 console_setfile(stdin, inputdev);
965 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
966 console_devices[stdin][0] = inputdev;
967 #endif
968 }
969
970 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
971 stdio_print_current_devices();
972 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
973
974 /* Setting environment variables */
975 for (i = 0; i < MAX_FILES; i++) {
976 env_set(stdio_names[i], stdio_devices[i]->name);
977 }
978
979 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
980
981 #if 0
982 /* If nothing usable installed, use only the initial console */
983 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
984 return 0;
985 #endif
986 print_pre_console_buffer(flushpoint);
987 return 0;
988 }
989
990 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
991