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[people/ms/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
9854a874
SG
381#ifdef CONFIG_CONSOLE_RECORD
382 if (gd->console_in.start) {
383 int ch;
384
385 ch = membuff_getbyte(&gd->console_in);
386 if (ch != -1)
387 return 1;
388 }
389#endif
47d1a6e1
WD
390 if (gd->flags & GD_FLG_DEVINIT) {
391 /* Get from the standard input */
ec6f1499 392 return fgetc(stdin);
47d1a6e1
WD
393 }
394
395 /* Send directly to the handler */
ec6f1499 396 return serial_getc();
47d1a6e1
WD
397}
398
ec6f1499 399int tstc(void)
47d1a6e1 400{
f5c3ba79
MJ
401#ifdef CONFIG_DISABLE_CONSOLE
402 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
403 return 0;
404#endif
405
e3e454cd
GR
406 if (!gd->have_console)
407 return 0;
9854a874
SG
408#ifdef CONFIG_CONSOLE_RECORD
409 if (gd->console_in.start) {
410 if (membuff_peekbyte(&gd->console_in) != -1)
411 return 1;
412 }
413#endif
47d1a6e1
WD
414 if (gd->flags & GD_FLG_DEVINIT) {
415 /* Test the standard input */
ec6f1499 416 return ftstc(stdin);
47d1a6e1
WD
417 }
418
419 /* Send directly to the handler */
ec6f1499 420 return serial_tstc();
47d1a6e1
WD
421}
422
27669667
SS
423#define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
424#define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
425
3fa4977a 426#ifdef CONFIG_PRE_CONSOLE_BUFFER
9558b48a
GR
427#define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ)
428
429static void pre_console_putc(const char c)
430{
431 char *buffer = (char *)CONFIG_PRE_CON_BUF_ADDR;
432
433 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
434}
435
436static void pre_console_puts(const char *s)
437{
438 while (*s)
439 pre_console_putc(*s++);
440}
441
27669667 442static void print_pre_console_buffer(int flushpoint)
9558b48a 443{
a8552c7c
HG
444 unsigned long in = 0, out = 0;
445 char *buf_in = (char *)CONFIG_PRE_CON_BUF_ADDR;
446 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1];
9558b48a
GR
447
448 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ)
a8552c7c 449 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ;
9558b48a 450
a8552c7c
HG
451 while (in < gd->precon_buf_idx)
452 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
453
454 buf_out[out] = 0;
455
456 switch (flushpoint) {
457 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
458 puts(buf_out);
459 break;
460 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
461 console_puts_noserial(stdout, buf_out);
462 break;
463 }
9558b48a
GR
464}
465#else
466static inline void pre_console_putc(const char c) {}
467static inline void pre_console_puts(const char *s) {}
27669667 468static inline void print_pre_console_buffer(int flushpoint) {}
9558b48a
GR
469#endif
470
ec6f1499 471void putc(const char c)
47d1a6e1 472{
91b136c7 473#ifdef CONFIG_SANDBOX
da229e4e 474 /* sandbox can send characters to stdout before it has a console */
093f79ab 475 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
91b136c7
SG
476 os_putc(c);
477 return;
478 }
479#endif
d6ea5307
SG
480#ifdef CONFIG_DEBUG_UART
481 /* if we don't have a console yet, use the debug UART */
482 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
483 printch(c);
484 return;
485 }
486#endif
9854a874
SG
487#ifdef CONFIG_CONSOLE_RECORD
488 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start)
489 membuff_putbyte(&gd->console_out, c);
490#endif
a6cccaea
WD
491#ifdef CONFIG_SILENT_CONSOLE
492 if (gd->flags & GD_FLG_SILENT)
f6e20fc6 493 return;
a6cccaea
WD
494#endif
495
f5c3ba79
MJ
496#ifdef CONFIG_DISABLE_CONSOLE
497 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
498 return;
499#endif
500
e3e454cd 501 if (!gd->have_console)
9558b48a 502 return pre_console_putc(c);
e3e454cd 503
47d1a6e1
WD
504 if (gd->flags & GD_FLG_DEVINIT) {
505 /* Send to the standard output */
ec6f1499 506 fputc(stdout, c);
47d1a6e1
WD
507 } else {
508 /* Send directly to the handler */
27669667 509 pre_console_putc(c);
ec6f1499 510 serial_putc(c);
47d1a6e1
WD
511 }
512}
513
ec6f1499 514void puts(const char *s)
47d1a6e1 515{
91b136c7 516#ifdef CONFIG_SANDBOX
093f79ab 517 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
91b136c7
SG
518 os_puts(s);
519 return;
520 }
521#endif
d6ea5307
SG
522#ifdef CONFIG_DEBUG_UART
523 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) {
524 while (*s) {
525 int ch = *s++;
91b136c7 526
d6ea5307
SG
527 printch(ch);
528 if (ch == '\n')
529 printch('\r');
530 }
531 return;
532 }
533#endif
9854a874
SG
534#ifdef CONFIG_CONSOLE_RECORD
535 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start)
536 membuff_put(&gd->console_out, s, strlen(s));
537#endif
a6cccaea
WD
538#ifdef CONFIG_SILENT_CONSOLE
539 if (gd->flags & GD_FLG_SILENT)
540 return;
541#endif
542
f5c3ba79
MJ
543#ifdef CONFIG_DISABLE_CONSOLE
544 if (gd->flags & GD_FLG_DISABLE_CONSOLE)
545 return;
546#endif
547
e3e454cd 548 if (!gd->have_console)
9558b48a 549 return pre_console_puts(s);
e3e454cd 550
47d1a6e1
WD
551 if (gd->flags & GD_FLG_DEVINIT) {
552 /* Send to the standard output */
ec6f1499 553 fputs(stdout, s);
47d1a6e1
WD
554 } else {
555 /* Send directly to the handler */
27669667 556 pre_console_puts(s);
ec6f1499 557 serial_puts(s);
47d1a6e1
WD
558 }
559}
560
9854a874
SG
561#ifdef CONFIG_CONSOLE_RECORD
562int console_record_init(void)
563{
564 int ret;
565
566 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE);
567 if (ret)
568 return ret;
569 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE);
570
571 return ret;
572}
573
574void console_record_reset(void)
575{
576 membuff_purge(&gd->console_out);
577 membuff_purge(&gd->console_in);
578}
579
580void console_record_reset_enable(void)
581{
582 console_record_reset();
583 gd->flags |= GD_FLG_RECORD;
584}
585#endif
586
47d1a6e1
WD
587/* test if ctrl-c was pressed */
588static int ctrlc_disabled = 0; /* see disable_ctrl() */
589static int ctrlc_was_pressed = 0;
ec6f1499 590int ctrlc(void)
47d1a6e1 591{
8969ea3e 592#ifndef CONFIG_SANDBOX
47d1a6e1 593 if (!ctrlc_disabled && gd->have_console) {
ec6f1499
JCPV
594 if (tstc()) {
595 switch (getc()) {
47d1a6e1
WD
596 case 0x03: /* ^C - Control C */
597 ctrlc_was_pressed = 1;
598 return 1;
599 default:
600 break;
601 }
602 }
603 }
8969ea3e
SG
604#endif
605
47d1a6e1
WD
606 return 0;
607}
a5dffa4b
PA
608/* Reads user's confirmation.
609 Returns 1 if user's input is "y", "Y", "yes" or "YES"
610*/
611int confirm_yesno(void)
612{
613 int i;
614 char str_input[5];
615
616 /* Flush input */
617 while (tstc())
618 getc();
619 i = 0;
620 while (i < sizeof(str_input)) {
621 str_input[i] = getc();
622 putc(str_input[i]);
623 if (str_input[i] == '\r')
624 break;
625 i++;
626 }
627 putc('\n');
628 if (strncmp(str_input, "y\r", 2) == 0 ||
629 strncmp(str_input, "Y\r", 2) == 0 ||
630 strncmp(str_input, "yes\r", 4) == 0 ||
631 strncmp(str_input, "YES\r", 4) == 0)
632 return 1;
633 return 0;
634}
47d1a6e1
WD
635/* pass 1 to disable ctrlc() checking, 0 to enable.
636 * returns previous state
637 */
ec6f1499 638int disable_ctrlc(int disable)
47d1a6e1
WD
639{
640 int prev = ctrlc_disabled; /* save previous state */
641
642 ctrlc_disabled = disable;
643 return prev;
644}
645
646int had_ctrlc (void)
647{
648 return ctrlc_was_pressed;
649}
650
ec6f1499 651void clear_ctrlc(void)
47d1a6e1
WD
652{
653 ctrlc_was_pressed = 0;
654}
655
656#ifdef CONFIG_MODEM_SUPPORT_DEBUG
657char screen[1024];
658char *cursor = screen;
659int once = 0;
660inline void dbg(const char *fmt, ...)
661{
662 va_list args;
663 uint i;
6d0f6bcf 664 char printbuffer[CONFIG_SYS_PBSIZE];
47d1a6e1
WD
665
666 if (!once) {
667 memset(screen, 0, sizeof(screen));
668 once++;
669 }
670
671 va_start(args, fmt);
672
673 /* For this to work, printbuffer must be larger than
674 * anything we ever want to print.
675 */
068af6f8 676 i = vsnprintf(printbuffer, sizeof(printbuffer), fmt, args);
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WD
677 va_end(args);
678
ec6f1499
JCPV
679 if ((screen + sizeof(screen) - 1 - cursor)
680 < strlen(printbuffer) + 1) {
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WD
681 memset(screen, 0, sizeof(screen));
682 cursor = screen;
683 }
684 sprintf(cursor, printbuffer);
685 cursor += strlen(printbuffer);
686
687}
688#else
482f4691 689static inline void dbg(const char *fmt, ...)
47d1a6e1
WD
690{
691}
692#endif
693
694/** U-Boot INIT FUNCTIONS *************************************************/
695
d7be3056 696struct stdio_dev *search_device(int flags, const char *name)
c1de7a6d 697{
52cb4d4f 698 struct stdio_dev *dev;
c1de7a6d 699
52cb4d4f 700 dev = stdio_get_by_name(name);
c1de7a6d 701
ec6f1499 702 if (dev && (dev->flags & flags))
c1de7a6d
JCPV
703 return dev;
704
705 return NULL;
706}
707
d7be3056 708int console_assign(int file, const char *devname)
47d1a6e1 709{
c1de7a6d 710 int flag;
52cb4d4f 711 struct stdio_dev *dev;
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WD
712
713 /* Check for valid file */
714 switch (file) {
715 case stdin:
716 flag = DEV_FLAGS_INPUT;
717 break;
718 case stdout:
719 case stderr:
720 flag = DEV_FLAGS_OUTPUT;
721 break;
722 default:
723 return -1;
724 }
725
726 /* Check for valid device name */
727
c1de7a6d 728 dev = search_device(flag, devname);
47d1a6e1 729
ec6f1499
JCPV
730 if (dev)
731 return console_setfile(file, dev);
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WD
732
733 return -1;
734}
735
736/* Called before relocation - use serial functions */
ec6f1499 737int console_init_f(void)
47d1a6e1 738{
47d1a6e1 739 gd->have_console = 1;
f72da340
WD
740
741#ifdef CONFIG_SILENT_CONSOLE
742 if (getenv("silent") != NULL)
743 gd->flags |= GD_FLG_SILENT;
744#endif
745
27669667 746 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
9558b48a 747
ec6f1499 748 return 0;
47d1a6e1
WD
749}
750
7e3be7cf
JCPV
751void stdio_print_current_devices(void)
752{
7e3be7cf
JCPV
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 }
7e3be7cf
JCPV
774}
775
6d0f6bcf 776#ifdef CONFIG_SYS_CONSOLE_IS_IN_ENV
47d1a6e1 777/* Called after the relocation - use desired console functions */
ec6f1499 778int console_init_r(void)
47d1a6e1
WD
779{
780 char *stdinname, *stdoutname, *stderrname;
52cb4d4f 781 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
6d0f6bcf 782#ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
6e592385 783 int i;
6d0f6bcf 784#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
16a28ef2
GJ
785#ifdef CONFIG_CONSOLE_MUX
786 int iomux_err = 0;
787#endif
47d1a6e1
WD
788
789 /* set default handlers at first */
49cad547
MD
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;
47d1a6e1
WD
795
796 /* stdin stdout and stderr are in environment */
797 /* scan for it */
ec6f1499
JCPV
798 stdinname = getenv("stdin");
799 stdoutname = getenv("stdout");
800 stderrname = getenv("stderr");
47d1a6e1 801
53677ef1 802 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
ec6f1499
JCPV
803 inputdev = search_device(DEV_FLAGS_INPUT, stdinname);
804 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname);
805 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname);
16a28ef2
GJ
806#ifdef CONFIG_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
47d1a6e1
WD
814 }
815 /* if the devices are overwritten or not found, use default device */
816 if (inputdev == NULL) {
ec6f1499 817 inputdev = search_device(DEV_FLAGS_INPUT, "serial");
47d1a6e1
WD
818 }
819 if (outputdev == NULL) {
ec6f1499 820 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial");
47d1a6e1
WD
821 }
822 if (errdev == NULL) {
ec6f1499 823 errdev = search_device(DEV_FLAGS_OUTPUT, "serial");
47d1a6e1
WD
824 }
825 /* Initializes output console first */
826 if (outputdev != NULL) {
16a28ef2 827 /* need to set a console if not done above. */
5f032010 828 console_doenv(stdout, outputdev);
47d1a6e1
WD
829 }
830 if (errdev != NULL) {
16a28ef2 831 /* need to set a console if not done above. */
5f032010 832 console_doenv(stderr, errdev);
47d1a6e1
WD
833 }
834 if (inputdev != NULL) {
16a28ef2 835 /* need to set a console if not done above. */
5f032010 836 console_doenv(stdin, inputdev);
47d1a6e1
WD
837 }
838
16a28ef2
GJ
839#ifdef CONFIG_CONSOLE_MUX
840done:
841#endif
842
78c112c9 843#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
7e3be7cf 844 stdio_print_current_devices();
78c112c9 845#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
47d1a6e1 846
6d0f6bcf 847#ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE
47d1a6e1
WD
848 /* set the environment variables (will overwrite previous env settings) */
849 for (i = 0; i < 3; i++) {
ec6f1499 850 setenv(stdio_names[i], stdio_devices[i]->name);
47d1a6e1 851 }
6d0f6bcf 852#endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */
47d1a6e1 853
c4e0057f
JH
854 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
855
47d1a6e1
WD
856#if 0
857 /* If nothing usable installed, use only the initial console */
858 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
ec6f1499 859 return 0;
47d1a6e1 860#endif
27669667 861 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
ec6f1499 862 return 0;
47d1a6e1
WD
863}
864
6d0f6bcf 865#else /* CONFIG_SYS_CONSOLE_IS_IN_ENV */
47d1a6e1
WD
866
867/* Called after the relocation - use desired console functions */
ec6f1499 868int console_init_r(void)
47d1a6e1 869{
52cb4d4f 870 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
c1de7a6d 871 int i;
52cb4d4f 872 struct list_head *list = stdio_get_list();
c1de7a6d 873 struct list_head *pos;
52cb4d4f 874 struct stdio_dev *dev;
47d1a6e1 875
d791b1dc 876#ifdef CONFIG_SPLASH_SCREEN
ec6f1499
JCPV
877 /*
878 * suppress all output if splash screen is enabled and we have
a7490816
AG
879 * a bmp to display. We redirect the output from frame buffer
880 * console to serial console in this case or suppress it if
881 * "silent" mode was requested.
ec6f1499 882 */
a7490816
AG
883 if (getenv("splashimage") != NULL) {
884 if (!(gd->flags & GD_FLG_SILENT))
885 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial");
886 }
f72da340
WD
887#endif
888
47d1a6e1 889 /* Scan devices looking for input and output devices */
c1de7a6d 890 list_for_each(pos, list) {
52cb4d4f 891 dev = list_entry(pos, struct stdio_dev, list);
47d1a6e1
WD
892
893 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
894 inputdev = dev;
895 }
896 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
897 outputdev = dev;
898 }
c1de7a6d
JCPV
899 if(inputdev && outputdev)
900 break;
47d1a6e1
WD
901 }
902
903 /* Initializes output console first */
904 if (outputdev != NULL) {
ec6f1499
JCPV
905 console_setfile(stdout, outputdev);
906 console_setfile(stderr, outputdev);
16a28ef2
GJ
907#ifdef CONFIG_CONSOLE_MUX
908 console_devices[stdout][0] = outputdev;
909 console_devices[stderr][0] = outputdev;
910#endif
47d1a6e1
WD
911 }
912
913 /* Initializes input console */
914 if (inputdev != NULL) {
ec6f1499 915 console_setfile(stdin, inputdev);
16a28ef2
GJ
916#ifdef CONFIG_CONSOLE_MUX
917 console_devices[stdin][0] = inputdev;
918#endif
47d1a6e1
WD
919 }
920
78c112c9 921#ifndef CONFIG_SYS_CONSOLE_INFO_QUIET
7e3be7cf 922 stdio_print_current_devices();
78c112c9 923#endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */
47d1a6e1
WD
924
925 /* Setting environment variables */
926 for (i = 0; i < 3; i++) {
ec6f1499 927 setenv(stdio_names[i], stdio_devices[i]->name);
47d1a6e1
WD
928 }
929
c4e0057f
JH
930 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
931
47d1a6e1
WD
932#if 0
933 /* If nothing usable installed, use only the initial console */
934 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL))
ec6f1499 935 return 0;
47d1a6e1 936#endif
27669667 937 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL);
ec6f1499 938 return 0;
47d1a6e1
WD
939}
940
6d0f6bcf 941#endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */