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