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