1 /*
2 * (C) Copyright 2000
3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
4 *
5 * SPDX-License-Identifier: GPL-2.0+
6 */
7
8 #include <common.h>
9 #include <console.h>
10 #include <debug_uart.h>
11 #include <dm.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 <environment.h>
21 #include <watchdog.h>
22 #include <vsprintf.h>
23
24 #ifdef CONFIG_PSTORE
25 #include <asm/arch/pstore.h>
26 #endif
27
28 DECLARE_GLOBAL_DATA_PTR;
29
30 static uspinlock_t console_lock;
31
on_console(const char * name,const char * value,enum env_op op,int flags)32 static int on_console(const char *name, const char *value, enum env_op op,
33 int flags)
34 {
35 int console = -1;
36
37 /* Check for console redirection */
38 if (strcmp(name, "stdin") == 0)
39 console = stdin;
40 else if (strcmp(name, "stdout") == 0)
41 console = stdout;
42 else if (strcmp(name, "stderr") == 0)
43 console = stderr;
44
45 /* if not actually setting a console variable, we don't care */
46 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
47 return 0;
48
49 switch (op) {
50 case env_op_create:
51 case env_op_overwrite:
52
53 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
54 if (iomux_doenv(console, value))
55 return 1;
56 #else
57 /* Try assigning specified device */
58 if (console_assign(console, value) < 0)
59 return 1;
60 #endif
61 return 0;
62
63 case env_op_delete:
64 if ((flags & H_FORCE) == 0)
65 printf("Can't delete \"%s\"\n", name);
66 return 1;
67
68 default:
69 return 0;
70 }
71 }
72 U_BOOT_ENV_CALLBACK(console, on_console);
73
74 #ifdef CONFIG_SILENT_CONSOLE
on_silent(const char * name,const char * value,enum env_op op,int flags)75 static int on_silent(const char *name, const char *value, enum env_op op,
76 int flags)
77 {
78 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET)
79 if (flags & H_INTERACTIVE)
80 return 0;
81 #endif
82 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC)
83 if ((flags & H_INTERACTIVE) == 0)
84 return 0;
85 #endif
86
87 if (value != NULL)
88 gd->flags |= GD_FLG_SILENT;
89 else
90 gd->flags &= ~GD_FLG_SILENT;
91
92 return 0;
93 }
94 U_BOOT_ENV_CALLBACK(silent, on_silent);
95 #endif
96
97 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
98 /*
99 * if overwrite_console returns 1, the stdin, stderr and stdout
100 * are switched to the serial port, else the settings in the
101 * environment are used
102 */
103 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
104 extern int overwrite_console(void);
105 #define OVERWRITE_CONSOLE overwrite_console()
106 #else
107 #define OVERWRITE_CONSOLE 0
108 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
109
110 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
111
console_setfile(int file,struct stdio_dev * dev)112 static int console_setfile(int file, struct stdio_dev * dev)
113 {
114 int error = 0;
115
116 if (dev == NULL)
117 return -1;
118
119 switch (file) {
120 case stdin:
121 case stdout:
122 case stderr:
123 /* Start new device */
124 if (dev->start) {
125 error = dev->start(dev);
126 /* If it's not started dont use it */
127 if (error < 0)
128 break;
129 }
130
131 /* Assign the new device (leaving the existing one started) */
132 stdio_devices[file] = dev;
133
134 /*
135 * Update monitor functions
136 * (to use the console stuff by other applications)
137 */
138 switch (file) {
139 case stdin:
140 gd->jt->getc = getc;
141 gd->jt->tstc = tstc;
142 break;
143 case stdout:
144 gd->jt->putc = putc;
145 gd->jt->puts = puts;
146 gd->jt->printf = printf;
147 break;
148 }
149 break;
150
151 default: /* Invalid file ID */
152 error = -1;
153 }
154 return error;
155 }
156
157 /**
158 * console_dev_is_serial() - Check if a stdio device is a serial device
159 *
160 * @sdev: Device to check
161 * @return true if this device is in the serial uclass (or for pre-driver-model,
162 * whether it is called "serial".
163 */
console_dev_is_serial(struct stdio_dev * sdev)164 static bool console_dev_is_serial(struct stdio_dev *sdev)
165 {
166 bool is_serial;
167
168 #ifdef CONFIG_DM_SERIAL
169 if (sdev->flags & DEV_FLAGS_DM) {
170 struct udevice *dev = sdev->priv;
171
172 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL;
173 } else
174 #endif
175 is_serial = !strcmp(sdev->name, "serial");
176
177 return is_serial;
178 }
179
180 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
181 /** Console I/O multiplexing *******************************************/
182
183 static struct stdio_dev *tstcdev;
184 struct stdio_dev **console_devices[MAX_FILES];
185 int cd_count[MAX_FILES];
186
187 /*
188 * This depends on tstc() always being called before getc().
189 * This is guaranteed to be true because this routine is called
190 * only from fgetc() which assures it.
191 * No attempt is made to demultiplex multiple input sources.
192 */
console_getc(int file)193 static int console_getc(int file)
194 {
195 unsigned char ret;
196
197 /* This is never called with testcdev == NULL */
198 ret = tstcdev->getc(tstcdev);
199 tstcdev = NULL;
200 return ret;
201 }
202
console_tstc(int file)203 static int console_tstc(int file)
204 {
205 int i, ret;
206 struct stdio_dev *dev;
207
208 disable_ctrlc(1);
209 for (i = 0; i < cd_count[file]; i++) {
210 dev = console_devices[file][i];
211 if (dev->tstc != NULL) {
212 ret = dev->tstc(dev);
213 if (ret > 0) {
214 tstcdev = dev;
215 disable_ctrlc(0);
216 return ret;
217 }
218 }
219 }
220 disable_ctrlc(0);
221
222 return 0;
223 }
224
console_putc(int file,const char c)225 static void console_putc(int file, const char c)
226 {
227 int i;
228 struct stdio_dev *dev;
229
230 for (i = 0; i < cd_count[file]; i++) {
231 dev = console_devices[file][i];
232 if (dev->putc != NULL)
233 dev->putc(dev, c);
234 }
235 }
236
console_puts_noserial(int file,const char * s)237 static void console_puts_noserial(int file, const char *s)
238 {
239 int i;
240 struct stdio_dev *dev;
241
242 for (i = 0; i < cd_count[file]; i++) {
243 dev = console_devices[file][i];
244 if (dev->puts != NULL && !console_dev_is_serial(dev))
245 dev->puts(dev, s);
246 }
247 }
248
console_puts(int file,const char * s)249 static void console_puts(int file, const char *s)
250 {
251 int i;
252 struct stdio_dev *dev;
253
254 for (i = 0; i < cd_count[file]; i++) {
255 dev = console_devices[file][i];
256 if (dev->puts != NULL)
257 dev->puts(dev, s);
258 }
259 }
260
console_doenv(int file,struct stdio_dev * dev)261 static inline void console_doenv(int file, struct stdio_dev *dev)
262 {
263 iomux_doenv(file, dev->name);
264 }
265
console_clear(int file)266 static void console_clear(int file)
267 {
268 int i;
269 struct stdio_dev *dev;
270
271 for (i = 0; i < cd_count[file]; i++) {
272 dev = console_devices[file][i];
273 if (dev->clear != NULL)
274 dev->clear(dev);
275 }
276 }
277 #else
console_getc(int file)278 static inline int console_getc(int file)
279 {
280 return stdio_devices[file]->getc(stdio_devices[file]);
281 }
282
console_tstc(int file)283 static inline int console_tstc(int file)
284 {
285 return stdio_devices[file]->tstc(stdio_devices[file]);
286 }
287
console_putc(int file,const char c)288 static inline void console_putc(int file, const char c)
289 {
290 stdio_devices[file]->putc(stdio_devices[file], c);
291 }
292
console_puts_noserial(int file,const char * s)293 static inline void console_puts_noserial(int file, const char *s)
294 {
295 if (!console_dev_is_serial(stdio_devices[file]))
296 stdio_devices[file]->puts(stdio_devices[file], s);
297 }
298
console_puts(int file,const char * s)299 static inline void console_puts(int file, const char *s)
300 {
301 stdio_devices[file]->puts(stdio_devices[file], s);
302 }
303
console_clear(int file)304 static inline void console_clear(int file)
305 {
306 if (stdio_devices[file]->clear)
307 stdio_devices[file]->clear(stdio_devices[file]);
308 }
309
console_doenv(int file,struct stdio_dev * dev)310 static inline void console_doenv(int file, struct stdio_dev *dev)
311 {
312 console_setfile(file, dev);
313 }
314 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */
315
316 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
317
serial_printf(const char * fmt,...)318 int serial_printf(const char *fmt, ...)
319 {
320 va_list args;
321 uint i;
322 char printbuffer[CONFIG_SYS_PBSIZE];
323
324 va_start(args, fmt);
325
326 /* For this to work, printbuffer must be larger than
327 * anything we ever want to print.
328 */
329 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
330 va_end(args);
331
332 serial_puts(printbuffer);
333 return i;
334 }
335
fgetc(int file)336 int fgetc(int file)
337 {
338 if (file < MAX_FILES) {
339 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
340 /*
341 * Effectively poll for input wherever it may be available.
342 */
343 for (;;) {
344 WATCHDOG_RESET();
345 /*
346 * Upper layer may have already called tstc() so
347 * check for that first.
348 */
349 if (tstcdev != NULL)
350 return console_getc(file);
351 console_tstc(file);
352 #ifdef CONFIG_WATCHDOG
353 /*
354 * If the watchdog must be rate-limited then it should
355 * already be handled in board-specific code.
356 */
357 udelay(1);
358 #endif
359 }
360 #else
361 return console_getc(file);
362 #endif
363 }
364
365 return -1;
366 }
367
ftstc(int file)368 int ftstc(int file)
369 {
370 if (file < MAX_FILES)
371 return console_tstc(file);
372
373 return -1;
374 }
375
fputc(int file,const char c)376 void fputc(int file, const char c)
377 {
378 if (file < MAX_FILES)
379 console_putc(file, c);
380 }
381
fputs(int file,const char * s)382 void fputs(int file, const char *s)
383 {
384 if (file < MAX_FILES)
385 console_puts(file, s);
386 }
387
fclear(int file)388 void fclear(int file)
389 {
390 if (file < MAX_FILES)
391 console_clear(file);
392 }
393
fprintf(int file,const char * fmt,...)394 int fprintf(int file, const char *fmt, ...)
395 {
396 va_list args;
397 uint i;
398 char printbuffer[CONFIG_SYS_PBSIZE];
399
400 va_start(args, fmt);
401
402 /* For this to work, printbuffer must be larger than
403 * anything we ever want to print.
404 */
405 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
406 va_end(args);
407
408 /* Send to desired file */
409 fputs(file, printbuffer);
410 return i;
411 }
412
413 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
414
getc(void)415 int getc(void)
416 {
417 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE)
418 return 0;
419
420 if (!gd->have_console)
421 return 0;
422
423 #ifdef CONFIG_CONSOLE_RECORD
424 if (gd->console_in.start) {
425 int ch;
426
427 ch = membuff_getbyte((struct membuff *)&gd->console_in);
428 if (ch != -1)
429 return 1;
430 }
431 #endif
432 if (gd->flags & GD_FLG_DEVINIT) {
433 /* Get from the standard input */
434 return fgetc(stdin);
435 }
436
437 /* Send directly to the handler */
438 return serial_getc();
439 }
440
tstc(void)441 int tstc(void)
442 {
443 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE)
444 return 0;
445
446 if (!gd->have_console)
447 return 0;
448 #ifdef CONFIG_CONSOLE_RECORD
449 if (gd->console_in.start) {
450 if (membuff_peekbyte((struct membuff *)&gd->console_in) != -1)
451 return 1;
452 }
453 #endif
454 if (gd->flags & GD_FLG_DEVINIT) {
455 /* Test the standard input */
456 return ftstc(stdin);
457 }
458
459 /* Send directly to the handler */
460 return serial_tstc();
461 }
462
flushc(void)463 void flushc(void)
464 {
465 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE)
466 return;
467
468 #ifdef CONFIG_DEBUG_UART_NS16550
469 debug_uart_flushc();
470 #endif
471 }
472
473 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
474 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
475
476 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
477 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
478
pre_console_putc(const char c)479 static void pre_console_putc(const char c)
480 {
481 char *buffer;
482
483 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
484
485 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
486
487 unmap_sysmem(buffer);
488 }
489
print_pre_console_buffer(int flushpoint)490 static void print_pre_console_buffer(int flushpoint)
491 {
492 unsigned long in = 0, out = 0;
493 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
494 char *buf_in;
495
496 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ);
497 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
498 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
499
500 while (in < gd->precon_buf_idx)
501 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
502 unmap_sysmem(buf_in);
503
504 buf_out[out] = 0;
505
506 switch (flushpoint) {
507 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
508 puts(buf_out);
509 break;
510 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
511 console_puts_noserial(stdout, buf_out);
512 break;
513 }
514 }
515 #else
pre_console_putc(const char c)516 static inline void pre_console_putc(const char c) {}
print_pre_console_buffer(int flushpoint)517 static inline void print_pre_console_buffer(int flushpoint) {}
518 #endif
519
putc(const char c)520 void putc(const char c)
521 {
522 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE)
523 return;
524
525 #ifdef CONFIG_PSTORE
526 putc_to_ram(c);
527 #endif
528
529 #ifdef CONFIG_CONSOLE_RECORD
530 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start)
531 membuff_putbyte((struct membuff *)&gd->console_out, c);
532 #endif
533 #ifdef CONFIG_SILENT_CONSOLE
534 if (gd->flags & GD_FLG_SILENT)
535 return;
536 #endif
537
538 #ifdef CONFIG_DEBUG_UART
539 /* if we don't have a console yet, use the debug UART */
540 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
541 printch(c);
542 return;
543 }
544 #endif
545 if (!gd->have_console)
546 return pre_console_putc(c);
547
548 if (gd->flags & GD_FLG_DEVINIT) {
549 /* Send to the standard output */
550 fputc(stdout, c);
551 } else {
552 /* Send directly to the handler */
553 pre_console_putc(c);
554 serial_putc(c);
555 }
556 }
557
558 #if ((!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_USE_TINY_PRINTF)) && \
559 defined(CONFIG_BOOTSTAGE_PRINTF_TIMESTAMP))
vspfunc(char * buf,size_t size,char * format,...)560 static void vspfunc(char *buf, size_t size, char *format, ...)
561 {
562 va_list ap;
563
564 va_start(ap, format);
565 vsnprintf(buf, size, format, ap);
566 va_end(ap);
567 }
568
puts(const char * s)569 void puts(const char *s)
570 {
571 unsigned long ts_sec, ts_msec, us, delta_ms;
572 char pr_timestamp[32], *p;
573 int cpu;
574
575 u_spin_lock(&console_lock);
576
577 while (*s) {
578 if (*s == '\n') {
579 gd->new_line = 1;
580 putc(*s++);
581 continue;
582 }
583
584 if (gd->new_line) {
585 us = (get_ticks() / (gd->arch.timer_rate_hz / 1000000));
586 if (gd->last_us)
587 delta_ms = DIV_ROUND_UP(us - gd->last_us, 1000);
588 else
589 delta_ms = 0;
590 gd->last_us = us;
591 gd->new_line = 0;
592
593 ts_sec = us / 1000000;
594 ts_msec = us % 1000000;
595 cpu = read_mpidr() & 0xfff;
596 vspfunc(pr_timestamp, sizeof(pr_timestamp),
597 "[%5lu.%06lu:%x:%03d] ", ts_sec, ts_msec, cpu, delta_ms);
598 p = pr_timestamp;
599 while (*p)
600 putc(*p++);
601 }
602
603 putc(*s++);
604 }
605
606 u_spin_unlock(&console_lock);
607 }
608 #else
puts(const char * s)609 void puts(const char *s)
610 {
611 u_spin_lock(&console_lock);
612
613 while (*s)
614 putc(*s++);
615
616 u_spin_unlock(&console_lock);
617 }
618 #endif
619
620
621 #ifdef CONFIG_CONSOLE_RECORD
console_record_init(void)622 int console_record_init(void)
623 {
624 int ret;
625
626 ret = membuff_new((struct membuff *)&gd->console_out,
627 CONFIG_CONSOLE_RECORD_OUT_SIZE);
628 if (ret)
629 return ret;
630 ret = membuff_new((struct membuff *)&gd->console_in,
631 CONFIG_CONSOLE_RECORD_IN_SIZE);
632
633 return ret;
634 }
635
console_record_reset(void)636 void console_record_reset(void)
637 {
638 membuff_purge((struct membuff *)&gd->console_out);
639 membuff_purge((struct membuff *)&gd->console_in);
640 }
641
console_record_reset_enable(void)642 void console_record_reset_enable(void)
643 {
644 console_record_reset();
645 gd->flags |= GD_FLG_RECORD;
646 }
647
648 /* Print and remove data from buffer */
console_record_print_purge(void)649 void console_record_print_purge(void)
650 {
651 unsigned long flags;
652 char c;
653
654 if (!gd || !(gd->flags & GD_FLG_RECORD))
655 return;
656
657 /* Remove some bits to avoid running unexpected branch in putc() */
658 flags = gd->flags;
659 gd->flags &= ~(GD_FLG_RECORD | GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE);
660
661 printf("\n\n## Console Record: \n");
662 while (!membuff_isempty((struct membuff *)&gd->console_out)) {
663 c = membuff_getbyte((struct membuff *)&gd->console_out);
664 putc(c);
665 }
666
667 gd->flags = flags;
668 }
669 #endif
670
671 /* test if ctrl-c was pressed */
672 static int ctrlc_disabled = 0; /* see disable_ctrl() */
673 static int ctrlc_was_pressed = 0;
ctrlc(void)674 int ctrlc(void)
675 {
676 #ifndef CONFIG_SANDBOX
677 if (!ctrlc_disabled && gd->have_console) {
678 if (tstc()) {
679 switch (getc()) {
680 case 0x03: /* ^C - Control C */
681 ctrlc_was_pressed = 1;
682 return 1;
683 default:
684 break;
685 }
686 }
687 }
688 #endif
689
690 return 0;
691 }
692 /* Reads user's confirmation.
693 Returns 1 if user's input is "y", "Y", "yes" or "YES"
694 */
confirm_yesno(void)695 int confirm_yesno(void)
696 {
697 int i;
698 char str_input[5];
699
700 /* Flush input */
701 while (tstc())
702 getc();
703 i = 0;
704 while (i < sizeof(str_input)) {
705 str_input[i] = getc();
706 putc(str_input[i]);
707 if (str_input[i] == '\r')
708 break;
709 i++;
710 }
711 putc('\n');
712 if (strncmp(str_input, "y\r", 2) == 0 ||
713 strncmp(str_input, "Y\r", 2) == 0 ||
714 strncmp(str_input, "yes\r", 4) == 0 ||
715 strncmp(str_input, "YES\r", 4) == 0)
716 return 1;
717 return 0;
718 }
719 /* pass 1 to disable ctrlc() checking, 0 to enable.
720 * returns previous state
721 */
disable_ctrlc(int disable)722 int disable_ctrlc(int disable)
723 {
724 int prev = ctrlc_disabled; /* save previous state */
725
726 ctrlc_disabled = disable;
727 return prev;
728 }
729
had_ctrlc(void)730 int had_ctrlc (void)
731 {
732 return ctrlc_was_pressed;
733 }
734
clear_ctrlc(void)735 void clear_ctrlc(void)
736 {
737 ctrlc_was_pressed = 0;
738 }
739
740 /** U-Boot INIT FUNCTIONS *************************************************/
741
search_device(int flags,const char * name)742 struct stdio_dev *search_device(int flags, const char *name)
743 {
744 struct stdio_dev *dev;
745
746 dev = stdio_get_by_name(name);
747 #ifdef CONFIG_VIDCONSOLE_AS_LCD
748 if (!dev && !strcmp(name, "lcd"))
749 dev = stdio_get_by_name("vidconsole");
750 #endif
751
752 if (dev && (dev->flags & flags))
753 return dev;
754
755 return NULL;
756 }
757
console_assign(int file,const char * devname)758 int console_assign(int file, const char *devname)
759 {
760 int flag;
761 struct stdio_dev *dev;
762
763 /* Check for valid file */
764 switch (file) {
765 case stdin:
766 flag = DEV_FLAGS_INPUT;
767 break;
768 case stdout:
769 case stderr:
770 flag = DEV_FLAGS_OUTPUT;
771 break;
772 default:
773 return -1;
774 }
775
776 /* Check for valid device name */
777
778 dev = search_device(flag, devname);
779
780 if (dev)
781 return console_setfile(file, dev);
782
783 return -1;
784 }
785
console_update_silent(void)786 static void console_update_silent(void)
787 {
788 #ifdef CONFIG_SILENT_CONSOLE
789 if (env_get("silent") != NULL) {
790 printf("U-Boot: enable silent console\n");
791 gd->flags |= GD_FLG_SILENT;
792 } else {
793 gd->flags &= ~GD_FLG_SILENT;
794 }
795 #endif
796 }
797
console_announce_r(void)798 int console_announce_r(void)
799 {
800 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
801 char buf[DISPLAY_OPTIONS_BANNER_LENGTH];
802
803 display_options_get_banner(false, buf, sizeof(buf));
804
805 console_puts_noserial(stdout, buf);
806 #endif
807
808 return 0;
809 }
810
811 /* Called before relocation - use serial functions */
console_init_f(void)812 int console_init_f(void)
813 {
814 gd->have_console = 1;
815
816 console_update_silent();
817
818 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
819
820 return 0;
821 }
822
stdio_print_current_devices(void)823 void stdio_print_current_devices(void)
824 {
825 /* Print information */
826 puts("In: ");
827 if (stdio_devices[stdin] == NULL) {
828 puts("No input devices available!\n");
829 } else {
830 printf ("%s\n", stdio_devices[stdin]->name);
831 }
832
833 puts("Out: ");
834 if (stdio_devices[stdout] == NULL) {
835 puts("No output devices available!\n");
836 } else {
837 printf ("%s\n", stdio_devices[stdout]->name);
838 }
839
840 puts("Err: ");
841 if (stdio_devices[stderr] == NULL) {
842 puts("No error devices available!\n");
843 } else {
844 printf ("%s\n", stdio_devices[stderr]->name);
845 }
846 }
847
848 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
849 /* Called after the relocation - use desired console functions */
console_init_r(void)850 int console_init_r(void)
851 {
852 char *stdinname, *stdoutname, *stderrname;
853 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
854 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
855 int i;
856 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
857 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
858 int iomux_err = 0;
859 #endif
860
861 /* set default handlers at first */
862 gd->jt->getc = serial_getc;
863 gd->jt->tstc = serial_tstc;
864 gd->jt->putc = serial_putc;
865 gd->jt->puts = serial_puts;
866 gd->jt->printf = serial_printf;
867
868 /* stdin stdout and stderr are in environment */
869 /* scan for it */
870 stdinname = env_get("stdin");
871 stdoutname = env_get("stdout");
872 stderrname = env_get("stderr");
873
874 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
875 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
876 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
877 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
878 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
879 iomux_err = iomux_doenv(stdin, stdinname);
880 iomux_err += iomux_doenv(stdout, stdoutname);
881 iomux_err += iomux_doenv(stderr, stderrname);
882 if (!iomux_err)
883 /* Successful, so skip all the code below. */
884 goto done;
885 #endif
886 }
887 /* if the devices are overwritten or not found, use default device */
888 if (inputdev == NULL) {
889 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
890 }
891 if (outputdev == NULL) {
892 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
893 }
894 if (errdev == NULL) {
895 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
896 }
897 /* Initializes output console first */
898 if (outputdev != NULL) {
899 /* need to set a console if not done above. */
900 console_doenv(stdout, outputdev);
901 }
902 if (errdev != NULL) {
903 /* need to set a console if not done above. */
904 console_doenv(stderr, errdev);
905 }
906 if (inputdev != NULL) {
907 /* need to set a console if not done above. */
908 console_doenv(stdin, inputdev);
909 }
910
911 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
912 done:
913 #endif
914
915 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
916 stdio_print_current_devices();
917 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
918 #ifdef CONFIG_VIDCONSOLE_AS_LCD
919 if (strstr(stdoutname, "lcd"))
920 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n");
921 #endif
922
923 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
924 /* set the environment variables (will overwrite previous env settings) */
925 for (i = 0; i < 3; i++) {
926 env_set(stdio_names[i], stdio_devices[i]->name);
927 }
928 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
929
930 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
931
932 #if 0
933 /* If nothing usable installed, use only the initial console */
934 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
935 return 0;
936 #endif
937 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
938 return 0;
939 }
940
941 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
942
943 /* Called after the relocation - use desired console functions */
console_init_r(void)944 int console_init_r(void)
945 {
946 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
947 int i;
948 struct list_head *list = stdio_get_list();
949 struct list_head *pos;
950 struct stdio_dev *dev;
951
952 console_update_silent();
953
954 #ifdef CONFIG_SPLASH_SCREEN
955 /*
956 * suppress all output if splash screen is enabled and we have
957 * a bmp to display. We redirect the output from frame buffer
958 * console to serial console in this case or suppress it if
959 * "silent" mode was requested.
960 */
961 if (env_get("splashimage") != NULL) {
962 if (!(gd->flags & GD_FLG_SILENT))
963 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
964 }
965 #endif
966
967 /* Scan devices looking for input and output devices */
968 list_for_each(pos, list) {
969 dev = list_entry(pos, struct stdio_dev, list);
970
971 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
972 inputdev = dev;
973 }
974 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
975 outputdev = dev;
976 }
977 if(inputdev && outputdev)
978 break;
979 }
980
981 /* Initializes output console first */
982 if (outputdev != NULL) {
983 console_setfile(stdout, outputdev);
984 console_setfile(stderr, outputdev);
985 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
986 console_devices[stdout][0] = outputdev;
987 console_devices[stderr][0] = outputdev;
988 #endif
989 }
990
991 /* Initializes input console */
992 if (inputdev != NULL) {
993 console_setfile(stdin, inputdev);
994 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
995 console_devices[stdin][0] = inputdev;
996 #endif
997 }
998
999 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
1000 stdio_print_current_devices();
1001 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
1002
1003 /* Setting environment variables */
1004 for (i = 0; i < 3; i++) {
1005 env_set(stdio_names[i], stdio_devices[i]->name);
1006 }
1007
1008 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
1009
1010 #if 0
1011 /* If nothing usable installed, use only the initial console */
1012 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
1013 return 0;
1014 #endif
1015 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
1016 return 0;
1017 }
1018
1019 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
1020