common/console.c

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