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