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Add a circular memory buffer implementation
[thirdparty/u-boot.git] / common / console.c
CommitLineData
47d1a6e1
WD
1/*
2 * (C) Copyright 2000
3 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
4 *
1a459660 5 * SPDX-License-Identifier: GPL-2.0+
47d1a6e1
WD
6 */
7
8#include <common.h>
24b852a7 9#include <console.h>
d6ea5307 10#include <debug_uart.h>
47d1a6e1 11#include <stdarg.h>
482f4691 12#include <iomux.h>
47d1a6e1 13#include <malloc.h>
91b136c7 14#include <os.h>
849d5d9c 15#include <serial.h>
52cb4d4f 16#include <stdio_dev.h>
27b207fd 17#include <exports.h>
849d5d9c 18#include <environment.h>
47d1a6e1 19
d87080b7
WD
20DECLARE_GLOBAL_DATA_PTR;
21
849d5d9c
JH
22static int on_console(const char *name, const char *value, enum env_op op,
23 int flags)
24{
25 int console = -1;
26
27 /* Check for console redirection */
28 if (strcmp(name, "stdin") == 0)
29 console = stdin;
30 else if (strcmp(name, "stdout") == 0)
31 console = stdout;
32 else if (strcmp(name, "stderr") == 0)
33 console = stderr;
34
35 /* if not actually setting a console variable, we don't care */
36 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
37 return 0;
38
39 switch (op) {
40 case env_op_create:
41 case env_op_overwrite:
42
43#ifdef CONFIG_CONSOLE_MUX
44 if (iomux_doenv(console, value))
45 return 1;
46#else
47 /* Try assigning specified device */
48 if (console_assign(console, value) < 0)
49 return 1;
50#endif /* CONFIG_CONSOLE_MUX */
51 return 0;
52
53 case env_op_delete:
54 if ((flags & H_FORCE) == 0)
55 printf("Can't delete \"%s\"\n", name);
56 return 1;
57
58 default:
59 return 0;
60 }
61}
62U_BOOT_ENV_CALLBACK(console, on_console);
63
e080d545
JH
64#ifdef CONFIG_SILENT_CONSOLE
65static int on_silent(const char *name, const char *value, enum env_op op,
66 int flags)
67{
68#ifndef CONFIG_SILENT_CONSOLE_UPDATE_ON_SET
69 if (flags & H_INTERACTIVE)
70 return 0;
71#endif
72#ifndef CONFIG_SILENT_CONSOLE_UPDATE_ON_RELOC
73 if ((flags & H_INTERACTIVE) == 0)
74 return 0;
75#endif
76
77 if (value != NULL)
78 gd->flags |= GD_FLG_SILENT;
79 else
80 gd->flags &= ~GD_FLG_SILENT;
81
82 return 0;
83}
84U_BOOT_ENV_CALLBACK(silent, on_silent);
85#endif
86
6d0f6bcf 87#ifdef CONFIG_SYS_CONSOLE_IS_IN_ENV
47d1a6e1
WD
88/*
89 * if overwrite_console returns 1, the stdin, stderr and stdout
90 * are switched to the serial port, else the settings in the
91 * environment are used
92 */
6d0f6bcf 93#ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
ec6f1499
JCPV
94extern int overwrite_console(void);
95#define OVERWRITE_CONSOLE overwrite_console()
47d1a6e1 96#else
83e40ba7 97#define OVERWRITE_CONSOLE 0
6d0f6bcf 98#endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
47d1a6e1 99
6d0f6bcf 100#endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
47d1a6e1 101
52cb4d4f 102static int console_setfile(int file, struct stdio_dev * dev)
47d1a6e1
WD
103{
104 int error = 0;
105
106 if (dev == NULL)
107 return -1;
108
109 switch (file) {
110 case stdin:
111 case stdout:
112 case stderr:
113 /* Start new device */
114 if (dev->start) {
709ea543 115 error = dev->start(dev);
47d1a6e1
WD
116 /* If it's not started dont use it */
117 if (error < 0)
118 break;
119 }
120
121 /* Assign the new device (leaving the existing one started) */
122 stdio_devices[file] = dev;
123
124 /*
125 * Update monitor functions
126 * (to use the console stuff by other applications)
127 */
128 switch (file) {
129 case stdin:
49cad547
MD
130 gd->jt->getc = getc;
131 gd->jt->tstc = tstc;
47d1a6e1
WD
132 break;
133 case stdout:
49cad547
MD
134 gd->jt->putc = putc;
135 gd->jt->puts = puts;
136 gd->jt->printf = printf;
47d1a6e1
WD
137 break;
138 }
139 break;
140
141 default: /* Invalid file ID */
142 error = -1;
143 }
144 return error;
145}
146
16a28ef2
GJ
147#if defined(CONFIG_CONSOLE_MUX)
148/** Console I/O multiplexing *******************************************/
149
52cb4d4f
JCPV
150static struct stdio_dev *tstcdev;
151struct stdio_dev **console_devices[MAX_FILES];
16a28ef2
GJ
152int cd_count[MAX_FILES];
153
154/*
155 * This depends on tstc() always being called before getc().
156 * This is guaranteed to be true because this routine is called
157 * only from fgetc() which assures it.
158 * No attempt is made to demultiplex multiple input sources.
159 */
5f032010 160static int console_getc(int file)
16a28ef2
GJ
161{
162 unsigned char ret;
163
164 /* This is never called with testcdev == NULL */
709ea543 165 ret = tstcdev->getc(tstcdev);
16a28ef2
GJ
166 tstcdev = NULL;
167 return ret;
168}
169
5f032010 170static int console_tstc(int file)
16a28ef2
GJ
171{
172 int i, ret;
52cb4d4f 173 struct stdio_dev *dev;
16a28ef2
GJ
174
175 disable_ctrlc(1);
176 for (i = 0; i < cd_count[file]; i++) {
177 dev = console_devices[file][i];
178 if (dev->tstc != NULL) {
709ea543 179 ret = dev->tstc(dev);
16a28ef2
GJ
180 if (ret > 0) {
181 tstcdev = dev;
182 disable_ctrlc(0);
183 return ret;
184 }
185 }
186 }
187 disable_ctrlc(0);
188
189 return 0;
190}
191
5f032010 192static void console_putc(int file, const char c)
16a28ef2
GJ
193{
194 int i;
52cb4d4f 195 struct stdio_dev *dev;
16a28ef2
GJ
196
197 for (i = 0; i < cd_count[file]; i++) {
198 dev = console_devices[file][i];
199 if (dev->putc != NULL)
709ea543 200 dev->putc(dev, c);
16a28ef2
GJ
201 }
202}
203
27669667 204#ifdef CONFIG_PRE_CONSOLE_BUFFER
a8552c7c 205static void console_puts_noserial(int file, const char *s)
27669667
SS
206{
207 int i;
208 struct stdio_dev *dev;
209
210 for (i = 0; i < cd_count[file]; i++) {
211 dev = console_devices[file][i];
a8552c7c
HG
212 if (dev->puts != NULL && strcmp(dev->name, "serial") != 0)
213 dev->puts(dev, s);
27669667
SS
214 }
215}
216#endif
217
5f032010 218static void console_puts(int file, const char *s)
16a28ef2
GJ
219{
220 int i;
52cb4d4f 221 struct stdio_dev *dev;
16a28ef2
GJ
222
223 for (i = 0; i < cd_count[file]; i++) {
224 dev = console_devices[file][i];
225 if (dev->puts != NULL)
709ea543 226 dev->puts(dev, s);
16a28ef2
GJ
227 }
228}
5f032010
JCPV
229
230static inline void console_printdevs(int file)
231{
232 iomux_printdevs(file);
233}
234
52cb4d4f 235static inline void console_doenv(int file, struct stdio_dev *dev)
5f032010
JCPV
236{
237 iomux_doenv(file, dev->name);
238}
239#else
240static inline int console_getc(int file)
241{
709ea543 242 return stdio_devices[file]->getc(stdio_devices[file]);
5f032010
JCPV
243}
244
245static inline int console_tstc(int file)
246{
709ea543 247 return stdio_devices[file]->tstc(stdio_devices[file]);
5f032010
JCPV
248}
249
250static inline void console_putc(int file, const char c)
251{
709ea543 252 stdio_devices[file]->putc(stdio_devices[file], c);
5f032010
JCPV
253}
254
27669667 255#ifdef CONFIG_PRE_CONSOLE_BUFFER
a8552c7c 256static inline void console_puts_noserial(int file, const char *s)
27669667
SS
257{
258 if (strcmp(stdio_devices[file]->name, "serial") != 0)
a8552c7c 259 stdio_devices[file]->puts(stdio_devices[file], s);
27669667
SS
260}
261#endif
262
5f032010
JCPV
263static inline void console_puts(int file, const char *s)
264{
709ea543 265 stdio_devices[file]->puts(stdio_devices[file], s);
5f032010
JCPV
266}
267
268static inline void console_printdevs(int file)
269{
270 printf("%s\n", stdio_devices[file]->name);
271}
272
52cb4d4f 273static inline void console_doenv(int file, struct stdio_dev *dev)
5f032010
JCPV
274{
275 console_setfile(file, dev);
276}
16a28ef2
GJ
277#endif /* defined(CONFIG_CONSOLE_MUX) */
278
47d1a6e1
WD
279/** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
280
d9c27253 281int serial_printf(const char *fmt, ...)
47d1a6e1
WD
282{
283 va_list args;
284 uint i;
6d0f6bcf 285 char printbuffer[CONFIG_SYS_PBSIZE];
47d1a6e1 286
ec6f1499 287 va_start(args, fmt);
47d1a6e1
WD
288
289 /* For this to work, printbuffer must be larger than
290 * anything we ever want to print.
291 */
068af6f8 292 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
ec6f1499 293 va_end(args);
47d1a6e1 294
ec6f1499 295 serial_puts(printbuffer);
d9c27253 296 return i;
47d1a6e1
WD
297}
298
ec6f1499 299int fgetc(int file)
47d1a6e1 300{
16a28ef2
GJ
301 if (file < MAX_FILES) {
302#if defined(CONFIG_CONSOLE_MUX)
303 /*
304 * Effectively poll for input wherever it may be available.
305 */
306 for (;;) {
307 /*
308 * Upper layer may have already called tstc() so
309 * check for that first.
310 */
311 if (tstcdev != NULL)
5f032010
JCPV
312 return console_getc(file);
313 console_tstc(file);
16a28ef2
GJ
314#ifdef CONFIG_WATCHDOG
315 /*
316 * If the watchdog must be rate-limited then it should
317 * already be handled in board-specific code.
318 */
319 udelay(1);
320#endif
321 }
322#else
5f032010 323 return console_getc(file);
16a28ef2
GJ
324#endif
325 }
47d1a6e1
WD
326
327 return -1;
328}
329
ec6f1499 330int ftstc(int file)
47d1a6e1
WD
331{
332 if (file < MAX_FILES)
5f032010 333 return console_tstc(file);
47d1a6e1
WD
334
335 return -1;
336}
337
ec6f1499 338void fputc(int file, const char c)
47d1a6e1
WD
339{
340 if (file < MAX_FILES)
5f032010 341 console_putc(file, c);
47d1a6e1
WD
342}
343
ec6f1499 344void fputs(int file, const char *s)
47d1a6e1
WD
345{
346 if (file < MAX_FILES)
5f032010 347 console_puts(file, s);
47d1a6e1
WD
348}
349
d9c27253 350int fprintf(int file, const char *fmt, ...)
47d1a6e1
WD
351{
352 va_list args;
353 uint i;
6d0f6bcf 354 char printbuffer[CONFIG_SYS_PBSIZE];
47d1a6e1 355
ec6f1499 356 va_start(args, fmt);
47d1a6e1
WD
357
358 /* For this to work, printbuffer must be larger than
359 * anything we ever want to print.
360 */
068af6f8 361 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
ec6f1499 362 va_end(args);
47d1a6e1
WD
363
364 /* Send to desired file */
ec6f1499 365 fputs(file, printbuffer);
d9c27253 366 return i;
47d1a6e1
WD
367}
368
369/** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
370
ec6f1499 371int getc(void)
47d1a6e1 372{
f5c3ba79
MJ
373#ifdef CONFIG_DISABLE_CONSOLE
374 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
375 return 0;
376#endif
377
e3e454cd
GR
378 if (!gd->have_console)
379 return 0;
380
47d1a6e1
WD
381 if (gd->flags & GD_FLG_DEVINIT) {
382 /* Get from the standard input */
ec6f1499 383 return fgetc(stdin);
47d1a6e1
WD
384 }
385
386 /* Send directly to the handler */
ec6f1499 387 return serial_getc();
47d1a6e1
WD
388}
389
ec6f1499 390int tstc(void)
47d1a6e1 391{
f5c3ba79
MJ
392#ifdef CONFIG_DISABLE_CONSOLE
393 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
394 return 0;
395#endif
396
e3e454cd
GR
397 if (!gd->have_console)
398 return 0;
399
47d1a6e1
WD
400 if (gd->flags & GD_FLG_DEVINIT) {
401 /* Test the standard input */
ec6f1499 402 return ftstc(stdin);
47d1a6e1
WD
403 }
404
405 /* Send directly to the handler */
ec6f1499 406 return serial_tstc();
47d1a6e1
WD
407}
408
27669667
SS
409#define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
410#define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
411
3fa4977a 412#ifdef CONFIG_PRE_CONSOLE_BUFFER
9558b48a
GR
413#define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
414
415static void pre_console_putc(const char c)
416{
417 char *buffer = (char *)CONFIG_PRE_CON_BUF_ADDR;
418
419 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
420}
421
422static void pre_console_puts(const char *s)
423{
424 while (*s)
425 pre_console_putc(*s++);
426}
427
27669667 428static void print_pre_console_buffer(int flushpoint)
9558b48a 429{
a8552c7c
HG
430 unsigned long in = 0, out = 0;
431 char *buf_in = (char *)CONFIG_PRE_CON_BUF_ADDR;
432 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
9558b48a
GR
433
434 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
a8552c7c 435 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
9558b48a 436
a8552c7c
HG
437 while (in < gd->precon_buf_idx)
438 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
439
440 buf_out[out] = 0;
441
442 switch (flushpoint) {
443 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
444 puts(buf_out);
445 break;
446 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
447 console_puts_noserial(stdout, buf_out);
448 break;
449 }
9558b48a
GR
450}
451#else
452static inline void pre_console_putc(const char c) {}
453static inline void pre_console_puts(const char *s) {}
27669667 454static inline void print_pre_console_buffer(int flushpoint) {}
9558b48a
GR
455#endif
456
ec6f1499 457void putc(const char c)
47d1a6e1 458{
91b136c7 459#ifdef CONFIG_SANDBOX
da229e4e 460 /* sandbox can send characters to stdout before it has a console */
093f79ab 461 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
91b136c7
SG
462 os_putc(c);
463 return;
464 }
465#endif
d6ea5307
SG
466#ifdef CONFIG_DEBUG_UART
467 /* if we don't have a console yet, use the debug UART */
468 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
469 printch(c);
470 return;
471 }
472#endif
a6cccaea
WD
473#ifdef CONFIG_SILENT_CONSOLE
474 if (gd->flags & GD_FLG_SILENT)
f6e20fc6 475 return;
a6cccaea
WD
476#endif
477
f5c3ba79
MJ
478#ifdef CONFIG_DISABLE_CONSOLE
479 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
480 return;
481#endif
482
e3e454cd 483 if (!gd->have_console)
9558b48a 484 return pre_console_putc(c);
e3e454cd 485
47d1a6e1
WD
486 if (gd->flags & GD_FLG_DEVINIT) {
487 /* Send to the standard output */
ec6f1499 488 fputc(stdout, c);
47d1a6e1
WD
489 } else {
490 /* Send directly to the handler */
27669667 491 pre_console_putc(c);
ec6f1499 492 serial_putc(c);
47d1a6e1
WD
493 }
494}
495
ec6f1499 496void puts(const char *s)
47d1a6e1 497{
91b136c7 498#ifdef CONFIG_SANDBOX
093f79ab 499 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
91b136c7
SG
500 os_puts(s);
501 return;
502 }
503#endif
d6ea5307
SG
504#ifdef CONFIG_DEBUG_UART
505 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
506 while (*s) {
507 int ch = *s++;
91b136c7 508
d6ea5307
SG
509 printch(ch);
510 if (ch == '\n')
511 printch('\r');
512 }
513 return;
514 }
515#endif
a6cccaea
WD
516#ifdef CONFIG_SILENT_CONSOLE
517 if (gd->flags & GD_FLG_SILENT)
518 return;
519#endif
520
f5c3ba79
MJ
521#ifdef CONFIG_DISABLE_CONSOLE
522 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
523 return;
524#endif
525
e3e454cd 526 if (!gd->have_console)
9558b48a 527 return pre_console_puts(s);
e3e454cd 528
47d1a6e1
WD
529 if (gd->flags & GD_FLG_DEVINIT) {
530 /* Send to the standard output */
ec6f1499 531 fputs(stdout, s);
47d1a6e1
WD
532 } else {
533 /* Send directly to the handler */
27669667 534 pre_console_puts(s);
ec6f1499 535 serial_puts(s);
47d1a6e1
WD
536 }
537}
538
d9c27253 539int printf(const char *fmt, ...)
47d1a6e1
WD
540{
541 va_list args;
542 uint i;
6d0f6bcf 543 char printbuffer[CONFIG_SYS_PBSIZE];
47d1a6e1 544
ec6f1499 545 va_start(args, fmt);
47d1a6e1
WD
546
547 /* For this to work, printbuffer must be larger than
548 * anything we ever want to print.
549 */
068af6f8 550 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
ec6f1499 551 va_end(args);
47d1a6e1
WD
552
553 /* Print the string */
ec6f1499 554 puts(printbuffer);
d9c27253 555 return i;
47d1a6e1
WD
556}
557
d9c27253 558int vprintf(const char *fmt, va_list args)
6dd652fa
WD
559{
560 uint i;
6d0f6bcf 561 char printbuffer[CONFIG_SYS_PBSIZE];
6dd652fa 562
7793ac96 563#if defined(CONFIG_PRE_CONSOLE_BUFFER) && !defined(CONFIG_SANDBOX)
e3e454cd
GR
564 if (!gd->have_console)
565 return 0;
9558b48a 566#endif
e3e454cd 567
6dd652fa
WD
568 /* For this to work, printbuffer must be larger than
569 * anything we ever want to print.
570 */
068af6f8 571 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
6dd652fa
WD
572
573 /* Print the string */
ec6f1499 574 puts(printbuffer);
d9c27253 575 return i;
6dd652fa
WD
576}
577
47d1a6e1
WD
578/* test if ctrl-c was pressed */
579static int ctrlc_disabled = 0; /* see disable_ctrl() */
580static int ctrlc_was_pressed = 0;
ec6f1499 581int ctrlc(void)
47d1a6e1 582{
8969ea3e 583#ifndef CONFIG_SANDBOX
47d1a6e1 584 if (!ctrlc_disabled && gd->have_console) {
ec6f1499
JCPV
585 if (tstc()) {
586 switch (getc()) {
47d1a6e1
WD
587 case 0x03: /* ^C - Control C */
588 ctrlc_was_pressed = 1;
589 return 1;
590 default:
591 break;
592 }
593 }
594 }
8969ea3e
SG
595#endif
596
47d1a6e1
WD
597 return 0;
598}
a5dffa4b
PA
599/* Reads user's confirmation.
600 Returns 1 if user's input is "y", "Y", "yes" or "YES"
601*/
602int confirm_yesno(void)
603{
604 int i;
605 char str_input[5];
606
607 /* Flush input */
608 while (tstc())
609 getc();
610 i = 0;
611 while (i < sizeof(str_input)) {
612 str_input[i] = getc();
613 putc(str_input[i]);
614 if (str_input[i] == '\r')
615 break;
616 i++;
617 }
618 putc('\n');
619 if (strncmp(str_input, "y\r", 2) == 0 ||
620 strncmp(str_input, "Y\r", 2) == 0 ||
621 strncmp(str_input, "yes\r", 4) == 0 ||
622 strncmp(str_input, "YES\r", 4) == 0)
623 return 1;
624 return 0;
625}
47d1a6e1
WD
626/* pass 1 to disable ctrlc() checking, 0 to enable.
627 * returns previous state
628 */
ec6f1499 629int disable_ctrlc(int disable)
47d1a6e1
WD
630{
631 int prev = ctrlc_disabled; /* save previous state */
632
633 ctrlc_disabled = disable;
634 return prev;
635}
636
637int had_ctrlc (void)
638{
639 return ctrlc_was_pressed;
640}
641
ec6f1499 642void clear_ctrlc(void)
47d1a6e1
WD
643{
644 ctrlc_was_pressed = 0;
645}
646
647#ifdef CONFIG_MODEM_SUPPORT_DEBUG
648char screen[1024];
649char *cursor = screen;
650int once = 0;
651inline void dbg(const char *fmt, ...)
652{
653 va_list args;
654 uint i;
6d0f6bcf 655 char printbuffer[CONFIG_SYS_PBSIZE];
47d1a6e1
WD
656
657 if (!once) {
658 memset(screen, 0, sizeof(screen));
659 once++;
660 }
661
662 va_start(args, fmt);
663
664 /* For this to work, printbuffer must be larger than
665 * anything we ever want to print.
666 */
068af6f8 667 i = vsnprintf(printbuffer, sizeof(printbuffer), fmt, args);
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WD
668 va_end(args);
669
ec6f1499
JCPV
670 if ((screen + sizeof(screen) - 1 - cursor)
671 < strlen(printbuffer) + 1) {
47d1a6e1
WD
672 memset(screen, 0, sizeof(screen));
673 cursor = screen;
674 }
675 sprintf(cursor, printbuffer);
676 cursor += strlen(printbuffer);
677
678}
679#else
482f4691 680static inline void dbg(const char *fmt, ...)
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WD
681{
682}
683#endif
684
685/** U-Boot INIT FUNCTIONS *************************************************/
686
d7be3056 687struct stdio_dev *search_device(int flags, const char *name)
c1de7a6d 688{
52cb4d4f 689 struct stdio_dev *dev;
c1de7a6d 690
52cb4d4f 691 dev = stdio_get_by_name(name);
c1de7a6d 692
ec6f1499 693 if (dev && (dev->flags & flags))
c1de7a6d
JCPV
694 return dev;
695
696 return NULL;
697}
698
d7be3056 699int console_assign(int file, const char *devname)
47d1a6e1 700{
c1de7a6d 701 int flag;
52cb4d4f 702 struct stdio_dev *dev;
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WD
703
704 /* Check for valid file */
705 switch (file) {
706 case stdin:
707 flag = DEV_FLAGS_INPUT;
708 break;
709 case stdout:
710 case stderr:
711 flag = DEV_FLAGS_OUTPUT;
712 break;
713 default:
714 return -1;
715 }
716
717 /* Check for valid device name */
718
c1de7a6d 719 dev = search_device(flag, devname);
47d1a6e1 720
ec6f1499
JCPV
721 if (dev)
722 return console_setfile(file, dev);
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WD
723
724 return -1;
725}
726
727/* Called before relocation - use serial functions */
ec6f1499 728int console_init_f(void)
47d1a6e1 729{
47d1a6e1 730 gd->have_console = 1;
f72da340
WD
731
732#ifdef CONFIG_SILENT_CONSOLE
733 if (getenv("silent") != NULL)
734 gd->flags |= GD_FLG_SILENT;
735#endif
736
27669667 737 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
9558b48a 738
ec6f1499 739 return 0;
47d1a6e1
WD
740}
741
7e3be7cf
JCPV
742void stdio_print_current_devices(void)
743{
7e3be7cf
JCPV
744 /* Print information */
745 puts("In: ");
746 if (stdio_devices[stdin] == NULL) {
747 puts("No input devices available!\n");
748 } else {
749 printf ("%s\n", stdio_devices[stdin]->name);
750 }
751
752 puts("Out: ");
753 if (stdio_devices[stdout] == NULL) {
754 puts("No output devices available!\n");
755 } else {
756 printf ("%s\n", stdio_devices[stdout]->name);
757 }
758
759 puts("Err: ");
760 if (stdio_devices[stderr] == NULL) {
761 puts("No error devices available!\n");
762 } else {
763 printf ("%s\n", stdio_devices[stderr]->name);
764 }
7e3be7cf
JCPV
765}
766
6d0f6bcf 767#ifdef CONFIG_SYS_CONSOLE_IS_IN_ENV
47d1a6e1 768/* Called after the relocation - use desired console functions */
ec6f1499 769int console_init_r(void)
47d1a6e1
WD
770{
771 char *stdinname, *stdoutname, *stderrname;
52cb4d4f 772 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
6d0f6bcf 773#ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
6e592385 774 int i;
6d0f6bcf 775#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
16a28ef2
GJ
776#ifdef CONFIG_CONSOLE_MUX
777 int iomux_err = 0;
778#endif
47d1a6e1
WD
779
780 /* set default handlers at first */
49cad547
MD
781 gd->jt->getc = serial_getc;
782 gd->jt->tstc = serial_tstc;
783 gd->jt->putc = serial_putc;
784 gd->jt->puts = serial_puts;
785 gd->jt->printf = serial_printf;
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WD
786
787 /* stdin stdout and stderr are in environment */
788 /* scan for it */
ec6f1499
JCPV
789 stdinname = getenv("stdin");
790 stdoutname = getenv("stdout");
791 stderrname = getenv("stderr");
47d1a6e1 792
53677ef1 793 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
ec6f1499
JCPV
794 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
795 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
796 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
16a28ef2
GJ
797#ifdef CONFIG_CONSOLE_MUX
798 iomux_err = iomux_doenv(stdin, stdinname);
799 iomux_err += iomux_doenv(stdout, stdoutname);
800 iomux_err += iomux_doenv(stderr, stderrname);
801 if (!iomux_err)
802 /* Successful, so skip all the code below. */
803 goto done;
804#endif
47d1a6e1
WD
805 }
806 /* if the devices are overwritten or not found, use default device */
807 if (inputdev == NULL) {
ec6f1499 808 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
47d1a6e1
WD
809 }
810 if (outputdev == NULL) {
ec6f1499 811 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
47d1a6e1
WD
812 }
813 if (errdev == NULL) {
ec6f1499 814 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
47d1a6e1
WD
815 }
816 /* Initializes output console first */
817 if (outputdev != NULL) {
16a28ef2 818 /* need to set a console if not done above. */
5f032010 819 console_doenv(stdout, outputdev);
47d1a6e1
WD
820 }
821 if (errdev != NULL) {
16a28ef2 822 /* need to set a console if not done above. */
5f032010 823 console_doenv(stderr, errdev);
47d1a6e1
WD
824 }
825 if (inputdev != NULL) {
16a28ef2 826 /* need to set a console if not done above. */
5f032010 827 console_doenv(stdin, inputdev);
47d1a6e1
WD
828 }
829
16a28ef2
GJ
830#ifdef CONFIG_CONSOLE_MUX
831done:
832#endif
833
78c112c9 834#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
7e3be7cf 835 stdio_print_current_devices();
78c112c9 836#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
47d1a6e1 837
6d0f6bcf 838#ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
47d1a6e1
WD
839 /* set the environment variables (will overwrite previous env settings) */
840 for (i = 0; i < 3; i++) {
ec6f1499 841 setenv(stdio_names[i], stdio_devices[i]->name);
47d1a6e1 842 }
6d0f6bcf 843#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
47d1a6e1 844
c4e0057f
JH
845 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
846
47d1a6e1
WD
847#if 0
848 /* If nothing usable installed, use only the initial console */
849 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
ec6f1499 850 return 0;
47d1a6e1 851#endif
27669667 852 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
ec6f1499 853 return 0;
47d1a6e1
WD
854}
855
6d0f6bcf 856#else /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
47d1a6e1
WD
857
858/* Called after the relocation - use desired console functions */
ec6f1499 859int console_init_r(void)
47d1a6e1 860{
52cb4d4f 861 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
c1de7a6d 862 int i;
52cb4d4f 863 struct list_head *list = stdio_get_list();
c1de7a6d 864 struct list_head *pos;
52cb4d4f 865 struct stdio_dev *dev;
47d1a6e1 866
d791b1dc 867#ifdef CONFIG_SPLASH_SCREEN
ec6f1499
JCPV
868 /*
869 * suppress all output if splash screen is enabled and we have
a7490816
AG
870 * a bmp to display. We redirect the output from frame buffer
871 * console to serial console in this case or suppress it if
872 * "silent" mode was requested.
ec6f1499 873 */
a7490816
AG
874 if (getenv("splashimage") != NULL) {
875 if (!(gd->flags & GD_FLG_SILENT))
876 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
877 }
f72da340
WD
878#endif
879
47d1a6e1 880 /* Scan devices looking for input and output devices */
c1de7a6d 881 list_for_each(pos, list) {
52cb4d4f 882 dev = list_entry(pos, struct stdio_dev, list);
47d1a6e1
WD
883
884 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
885 inputdev = dev;
886 }
887 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
888 outputdev = dev;
889 }
c1de7a6d
JCPV
890 if(inputdev && outputdev)
891 break;
47d1a6e1
WD
892 }
893
894 /* Initializes output console first */
895 if (outputdev != NULL) {
ec6f1499
JCPV
896 console_setfile(stdout, outputdev);
897 console_setfile(stderr, outputdev);
16a28ef2
GJ
898#ifdef CONFIG_CONSOLE_MUX
899 console_devices[stdout][0] = outputdev;
900 console_devices[stderr][0] = outputdev;
901#endif
47d1a6e1
WD
902 }
903
904 /* Initializes input console */
905 if (inputdev != NULL) {
ec6f1499 906 console_setfile(stdin, inputdev);
16a28ef2
GJ
907#ifdef CONFIG_CONSOLE_MUX
908 console_devices[stdin][0] = inputdev;
909#endif
47d1a6e1
WD
910 }
911
78c112c9 912#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
7e3be7cf 913 stdio_print_current_devices();
78c112c9 914#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
47d1a6e1
WD
915
916 /* Setting environment variables */
917 for (i = 0; i < 3; i++) {
ec6f1499 918 setenv(stdio_names[i], stdio_devices[i]->name);
47d1a6e1
WD
919 }
920
c4e0057f
JH
921 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
922
47d1a6e1
WD
923#if 0
924 /* If nothing usable installed, use only the initial console */
925 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
ec6f1499 926 return 0;
47d1a6e1 927#endif
27669667 928 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
ec6f1499 929 return 0;
47d1a6e1
WD
930}
931
6d0f6bcf 932#endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */