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 <dm.h> 12 #include <stdarg.h> 13 #include <iomux.h> 14 #include <malloc.h> 15 #include <mapmem.h> 16 #include <os.h> 17 #include <serial.h> 18 #include <stdio_dev.h> 19 #include <exports.h> 20 #include <environment.h> 21 #include <watchdog.h> 22 23 DECLARE_GLOBAL_DATA_PTR; 24 25 static int on_console(const char *name, const char *value, enum env_op op, 26 int flags) 27 { 28 int console = -1; 29 30 /* Check for console redirection */ 31 if (strcmp(name, "stdin") == 0) 32 console = stdin; 33 else if (strcmp(name, "stdout") == 0) 34 console = stdout; 35 else if (strcmp(name, "stderr") == 0) 36 console = stderr; 37 38 /* if not actually setting a console variable, we don't care */ 39 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0) 40 return 0; 41 42 switch (op) { 43 case env_op_create: 44 case env_op_overwrite: 45 46 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 47 if (iomux_doenv(console, value)) 48 return 1; 49 #else 50 /* Try assigning specified device */ 51 if (console_assign(console, value) < 0) 52 return 1; 53 #endif 54 return 0; 55 56 case env_op_delete: 57 if ((flags & H_FORCE) == 0) 58 printf("Can't delete \"%s\"\n", name); 59 return 1; 60 61 default: 62 return 0; 63 } 64 } 65 U_BOOT_ENV_CALLBACK(console, on_console); 66 67 #ifdef CONFIG_SILENT_CONSOLE 68 static int on_silent(const char *name, const char *value, enum env_op op, 69 int flags) 70 { 71 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET) 72 if (flags & H_INTERACTIVE) 73 return 0; 74 #endif 75 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC) 76 if ((flags & H_INTERACTIVE) == 0) 77 return 0; 78 #endif 79 80 if (value != NULL) 81 gd->flags |= GD_FLG_SILENT; 82 else 83 gd->flags &= ~GD_FLG_SILENT; 84 85 return 0; 86 } 87 U_BOOT_ENV_CALLBACK(silent, on_silent); 88 #endif 89 90 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) 91 /* 92 * if overwrite_console returns 1, the stdin, stderr and stdout 93 * are switched to the serial port, else the settings in the 94 * environment are used 95 */ 96 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 97 extern int overwrite_console(void); 98 #define OVERWRITE_CONSOLE overwrite_console() 99 #else 100 #define OVERWRITE_CONSOLE 0 101 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */ 102 103 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 104 105 static int console_setfile(int file, struct stdio_dev * dev) 106 { 107 int error = 0; 108 109 if (dev == NULL) 110 return -1; 111 112 switch (file) { 113 case stdin: 114 case stdout: 115 case stderr: 116 /* Start new device */ 117 if (dev->start) { 118 error = dev->start(dev); 119 /* If it's not started dont use it */ 120 if (error < 0) 121 break; 122 } 123 124 /* Assign the new device (leaving the existing one started) */ 125 stdio_devices[file] = dev; 126 127 /* 128 * Update monitor functions 129 * (to use the console stuff by other applications) 130 */ 131 switch (file) { 132 case stdin: 133 gd->jt->getc = getc; 134 gd->jt->tstc = tstc; 135 break; 136 case stdout: 137 gd->jt->putc = putc; 138 gd->jt->puts = puts; 139 gd->jt->printf = printf; 140 break; 141 } 142 break; 143 144 default: /* Invalid file ID */ 145 error = -1; 146 } 147 return error; 148 } 149 150 /** 151 * console_dev_is_serial() - Check if a stdio device is a serial device 152 * 153 * @sdev: Device to check 154 * @return true if this device is in the serial uclass (or for pre-driver-model, 155 * whether it is called "serial". 156 */ 157 static bool console_dev_is_serial(struct stdio_dev *sdev) 158 { 159 bool is_serial; 160 161 #ifdef CONFIG_DM_SERIAL 162 if (sdev->flags & DEV_FLAGS_DM) { 163 struct udevice *dev = sdev->priv; 164 165 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL; 166 } else 167 #endif 168 is_serial = !strcmp(sdev->name, "serial"); 169 170 return is_serial; 171 } 172 173 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 174 /** Console I/O multiplexing *******************************************/ 175 176 static struct stdio_dev *tstcdev; 177 struct stdio_dev **console_devices[MAX_FILES]; 178 int cd_count[MAX_FILES]; 179 180 /* 181 * This depends on tstc() always being called before getc(). 182 * This is guaranteed to be true because this routine is called 183 * only from fgetc() which assures it. 184 * No attempt is made to demultiplex multiple input sources. 185 */ 186 static int console_getc(int file) 187 { 188 unsigned char ret; 189 190 /* This is never called with testcdev == NULL */ 191 ret = tstcdev->getc(tstcdev); 192 tstcdev = NULL; 193 return ret; 194 } 195 196 static int console_tstc(int file) 197 { 198 int i, ret; 199 struct stdio_dev *dev; 200 201 disable_ctrlc(1); 202 for (i = 0; i < cd_count[file]; i++) { 203 dev = console_devices[file][i]; 204 if (dev->tstc != NULL) { 205 ret = dev->tstc(dev); 206 if (ret > 0) { 207 tstcdev = dev; 208 disable_ctrlc(0); 209 return ret; 210 } 211 } 212 } 213 disable_ctrlc(0); 214 215 return 0; 216 } 217 218 static void console_putc(int file, const char c) 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->putc != NULL) 226 dev->putc(dev, c); 227 } 228 } 229 230 static void console_puts_noserial(int file, const char *s) 231 { 232 int i; 233 struct stdio_dev *dev; 234 235 for (i = 0; i < cd_count[file]; i++) { 236 dev = console_devices[file][i]; 237 if (dev->puts != NULL && !console_dev_is_serial(dev)) 238 dev->puts(dev, s); 239 } 240 } 241 242 static void console_puts(int file, const char *s) 243 { 244 int i; 245 struct stdio_dev *dev; 246 247 for (i = 0; i < cd_count[file]; i++) { 248 dev = console_devices[file][i]; 249 if (dev->puts != NULL) 250 dev->puts(dev, s); 251 } 252 } 253 254 static inline void console_doenv(int file, struct stdio_dev *dev) 255 { 256 iomux_doenv(file, dev->name); 257 } 258 #else 259 static inline int console_getc(int file) 260 { 261 return stdio_devices[file]->getc(stdio_devices[file]); 262 } 263 264 static inline int console_tstc(int file) 265 { 266 return stdio_devices[file]->tstc(stdio_devices[file]); 267 } 268 269 static inline void console_putc(int file, const char c) 270 { 271 stdio_devices[file]->putc(stdio_devices[file], c); 272 } 273 274 static inline void console_puts_noserial(int file, const char *s) 275 { 276 if (!console_dev_is_serial(stdio_devices[file])) 277 stdio_devices[file]->puts(stdio_devices[file], s); 278 } 279 280 static inline void console_puts(int file, const char *s) 281 { 282 stdio_devices[file]->puts(stdio_devices[file], s); 283 } 284 285 static inline void console_doenv(int file, struct stdio_dev *dev) 286 { 287 console_setfile(file, dev); 288 } 289 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */ 290 291 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/ 292 293 int serial_printf(const char *fmt, ...) 294 { 295 va_list args; 296 uint i; 297 char printbuffer[CONFIG_SYS_PBSIZE]; 298 299 va_start(args, fmt); 300 301 /* For this to work, printbuffer must be larger than 302 * anything we ever want to print. 303 */ 304 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 305 va_end(args); 306 307 serial_puts(printbuffer); 308 return i; 309 } 310 311 int fgetc(int file) 312 { 313 if (file < MAX_FILES) { 314 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 315 /* 316 * Effectively poll for input wherever it may be available. 317 */ 318 for (;;) { 319 WATCHDOG_RESET(); 320 /* 321 * Upper layer may have already called tstc() so 322 * check for that first. 323 */ 324 if (tstcdev != NULL) 325 return console_getc(file); 326 console_tstc(file); 327 #ifdef CONFIG_WATCHDOG 328 /* 329 * If the watchdog must be rate-limited then it should 330 * already be handled in board-specific code. 331 */ 332 udelay(1); 333 #endif 334 } 335 #else 336 return console_getc(file); 337 #endif 338 } 339 340 return -1; 341 } 342 343 int ftstc(int file) 344 { 345 if (file < MAX_FILES) 346 return console_tstc(file); 347 348 return -1; 349 } 350 351 void fputc(int file, const char c) 352 { 353 if (file < MAX_FILES) 354 console_putc(file, c); 355 } 356 357 void fputs(int file, const char *s) 358 { 359 if (file < MAX_FILES) 360 console_puts(file, s); 361 } 362 363 int fprintf(int file, const char *fmt, ...) 364 { 365 va_list args; 366 uint i; 367 char printbuffer[CONFIG_SYS_PBSIZE]; 368 369 va_start(args, fmt); 370 371 /* For this to work, printbuffer must be larger than 372 * anything we ever want to print. 373 */ 374 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 375 va_end(args); 376 377 /* Send to desired file */ 378 fputs(file, printbuffer); 379 return i; 380 } 381 382 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/ 383 384 int getc(void) 385 { 386 #ifdef CONFIG_DISABLE_CONSOLE 387 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 388 return 0; 389 #endif 390 391 if (!gd->have_console) 392 return 0; 393 394 #ifdef CONFIG_CONSOLE_RECORD 395 if (gd->console_in.start) { 396 int ch; 397 398 ch = membuff_getbyte(&gd->console_in); 399 if (ch != -1) 400 return 1; 401 } 402 #endif 403 if (gd->flags & GD_FLG_DEVINIT) { 404 /* Get from the standard input */ 405 return fgetc(stdin); 406 } 407 408 /* Send directly to the handler */ 409 return serial_getc(); 410 } 411 412 int tstc(void) 413 { 414 #ifdef CONFIG_DISABLE_CONSOLE 415 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 416 return 0; 417 #endif 418 419 if (!gd->have_console) 420 return 0; 421 #ifdef CONFIG_CONSOLE_RECORD 422 if (gd->console_in.start) { 423 if (membuff_peekbyte(&gd->console_in) != -1) 424 return 1; 425 } 426 #endif 427 if (gd->flags & GD_FLG_DEVINIT) { 428 /* Test the standard input */ 429 return ftstc(stdin); 430 } 431 432 /* Send directly to the handler */ 433 return serial_tstc(); 434 } 435 436 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0 437 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1 438 439 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 440 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ) 441 442 static void pre_console_putc(const char c) 443 { 444 char *buffer; 445 446 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ); 447 448 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c; 449 450 unmap_sysmem(buffer); 451 } 452 453 static void pre_console_puts(const char *s) 454 { 455 while (*s) 456 pre_console_putc(*s++); 457 } 458 459 static void print_pre_console_buffer(int flushpoint) 460 { 461 unsigned long in = 0, out = 0; 462 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1]; 463 char *buf_in; 464 465 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ); 466 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ) 467 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ; 468 469 while (in < gd->precon_buf_idx) 470 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)]; 471 unmap_sysmem(buf_in); 472 473 buf_out[out] = 0; 474 475 switch (flushpoint) { 476 case PRE_CONSOLE_FLUSHPOINT1_SERIAL: 477 puts(buf_out); 478 break; 479 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL: 480 console_puts_noserial(stdout, buf_out); 481 break; 482 } 483 } 484 #else 485 static inline void pre_console_putc(const char c) {} 486 static inline void pre_console_puts(const char *s) {} 487 static inline void print_pre_console_buffer(int flushpoint) {} 488 #endif 489 490 void putc(const char c) 491 { 492 #ifdef CONFIG_DEBUG_UART 493 /* if we don't have a console yet, use the debug UART */ 494 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 495 printch(c); 496 return; 497 } 498 #endif 499 #ifdef CONFIG_CONSOLE_RECORD 500 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start) 501 membuff_putbyte(&gd->console_out, c); 502 #endif 503 #ifdef CONFIG_SILENT_CONSOLE 504 if (gd->flags & GD_FLG_SILENT) 505 return; 506 #endif 507 508 #ifdef CONFIG_DISABLE_CONSOLE 509 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 510 return; 511 #endif 512 513 if (!gd->have_console) 514 return pre_console_putc(c); 515 516 if (gd->flags & GD_FLG_DEVINIT) { 517 /* Send to the standard output */ 518 fputc(stdout, c); 519 } else { 520 /* Send directly to the handler */ 521 pre_console_putc(c); 522 serial_putc(c); 523 } 524 } 525 526 void puts(const char *s) 527 { 528 #ifdef CONFIG_DEBUG_UART 529 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 530 while (*s) { 531 int ch = *s++; 532 533 printch(ch); 534 } 535 return; 536 } 537 #endif 538 #ifdef CONFIG_CONSOLE_RECORD 539 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start) 540 membuff_put(&gd->console_out, s, strlen(s)); 541 #endif 542 #ifdef CONFIG_SILENT_CONSOLE 543 if (gd->flags & GD_FLG_SILENT) 544 return; 545 #endif 546 547 #ifdef CONFIG_DISABLE_CONSOLE 548 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 549 return; 550 #endif 551 552 if (!gd->have_console) 553 return pre_console_puts(s); 554 555 if (gd->flags & GD_FLG_DEVINIT) { 556 /* Send to the standard output */ 557 fputs(stdout, s); 558 } else { 559 /* Send directly to the handler */ 560 pre_console_puts(s); 561 serial_puts(s); 562 } 563 } 564 565 #ifdef CONFIG_CONSOLE_RECORD 566 int console_record_init(void) 567 { 568 int ret; 569 570 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE); 571 if (ret) 572 return ret; 573 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE); 574 575 return ret; 576 } 577 578 void console_record_reset(void) 579 { 580 membuff_purge(&gd->console_out); 581 membuff_purge(&gd->console_in); 582 } 583 584 void console_record_reset_enable(void) 585 { 586 console_record_reset(); 587 gd->flags |= GD_FLG_RECORD; 588 } 589 #endif 590 591 /* test if ctrl-c was pressed */ 592 static int ctrlc_disabled = 0; /* see disable_ctrl() */ 593 static int ctrlc_was_pressed = 0; 594 int ctrlc(void) 595 { 596 #ifndef CONFIG_SANDBOX 597 if (!ctrlc_disabled && gd->have_console) { 598 if (tstc()) { 599 switch (getc()) { 600 case 0x03: /* ^C - Control C */ 601 ctrlc_was_pressed = 1; 602 return 1; 603 default: 604 break; 605 } 606 } 607 } 608 #endif 609 610 return 0; 611 } 612 /* Reads user's confirmation. 613 Returns 1 if user's input is "y", "Y", "yes" or "YES" 614 */ 615 int confirm_yesno(void) 616 { 617 int i; 618 char str_input[5]; 619 620 /* Flush input */ 621 while (tstc()) 622 getc(); 623 i = 0; 624 while (i < sizeof(str_input)) { 625 str_input[i] = getc(); 626 putc(str_input[i]); 627 if (str_input[i] == '\r') 628 break; 629 i++; 630 } 631 putc('\n'); 632 if (strncmp(str_input, "y\r", 2) == 0 || 633 strncmp(str_input, "Y\r", 2) == 0 || 634 strncmp(str_input, "yes\r", 4) == 0 || 635 strncmp(str_input, "YES\r", 4) == 0) 636 return 1; 637 return 0; 638 } 639 /* pass 1 to disable ctrlc() checking, 0 to enable. 640 * returns previous state 641 */ 642 int disable_ctrlc(int disable) 643 { 644 int prev = ctrlc_disabled; /* save previous state */ 645 646 ctrlc_disabled = disable; 647 return prev; 648 } 649 650 int had_ctrlc (void) 651 { 652 return ctrlc_was_pressed; 653 } 654 655 void clear_ctrlc(void) 656 { 657 ctrlc_was_pressed = 0; 658 } 659 660 /** U-Boot INIT FUNCTIONS *************************************************/ 661 662 struct stdio_dev *search_device(int flags, const char *name) 663 { 664 struct stdio_dev *dev; 665 666 dev = stdio_get_by_name(name); 667 #ifdef CONFIG_VIDCONSOLE_AS_LCD 668 if (!dev && !strcmp(name, "lcd")) 669 dev = stdio_get_by_name("vidconsole"); 670 #endif 671 672 if (dev && (dev->flags & flags)) 673 return dev; 674 675 return NULL; 676 } 677 678 int console_assign(int file, const char *devname) 679 { 680 int flag; 681 struct stdio_dev *dev; 682 683 /* Check for valid file */ 684 switch (file) { 685 case stdin: 686 flag = DEV_FLAGS_INPUT; 687 break; 688 case stdout: 689 case stderr: 690 flag = DEV_FLAGS_OUTPUT; 691 break; 692 default: 693 return -1; 694 } 695 696 /* Check for valid device name */ 697 698 dev = search_device(flag, devname); 699 700 if (dev) 701 return console_setfile(file, dev); 702 703 return -1; 704 } 705 706 static void console_update_silent(void) 707 { 708 #ifdef CONFIG_SILENT_CONSOLE 709 if (env_get("silent") != NULL) 710 gd->flags |= GD_FLG_SILENT; 711 else 712 gd->flags &= ~GD_FLG_SILENT; 713 #endif 714 } 715 716 int console_announce_r(void) 717 { 718 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 719 char buf[DISPLAY_OPTIONS_BANNER_LENGTH]; 720 721 display_options_get_banner(false, buf, sizeof(buf)); 722 723 console_puts_noserial(stdout, buf); 724 #endif 725 726 return 0; 727 } 728 729 /* Called before relocation - use serial functions */ 730 int console_init_f(void) 731 { 732 gd->have_console = 1; 733 734 console_update_silent(); 735 736 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL); 737 738 return 0; 739 } 740 741 void stdio_print_current_devices(void) 742 { 743 /* Print information */ 744 puts("In: "); 745 if (stdio_devices[stdin] == NULL) { 746 puts("No input devices available!\n"); 747 } else { 748 printf ("%s\n", stdio_devices[stdin]->name); 749 } 750 751 puts("Out: "); 752 if (stdio_devices[stdout] == NULL) { 753 puts("No output devices available!\n"); 754 } else { 755 printf ("%s\n", stdio_devices[stdout]->name); 756 } 757 758 puts("Err: "); 759 if (stdio_devices[stderr] == NULL) { 760 puts("No error devices available!\n"); 761 } else { 762 printf ("%s\n", stdio_devices[stderr]->name); 763 } 764 } 765 766 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) 767 /* Called after the relocation - use desired console functions */ 768 int console_init_r(void) 769 { 770 char *stdinname, *stdoutname, *stderrname; 771 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL; 772 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 773 int i; 774 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 775 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 776 int iomux_err = 0; 777 #endif 778 779 /* set default handlers at first */ 780 gd->jt->getc = serial_getc; 781 gd->jt->tstc = serial_tstc; 782 gd->jt->putc = serial_putc; 783 gd->jt->puts = serial_puts; 784 gd->jt->printf = serial_printf; 785 786 /* stdin stdout and stderr are in environment */ 787 /* scan for it */ 788 stdinname = env_get("stdin"); 789 stdoutname = env_get("stdout"); 790 stderrname = env_get("stderr"); 791 792 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */ 793 inputdev = search_device(DEV_FLAGS_INPUT, stdinname); 794 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname); 795 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname); 796 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 797 iomux_err = iomux_doenv(stdin, stdinname); 798 iomux_err += iomux_doenv(stdout, stdoutname); 799 iomux_err += iomux_doenv(stderr, stderrname); 800 if (!iomux_err) 801 /* Successful, so skip all the code below. */ 802 goto done; 803 #endif 804 } 805 /* if the devices are overwritten or not found, use default device */ 806 if (inputdev == NULL) { 807 inputdev = search_device(DEV_FLAGS_INPUT, "serial"); 808 } 809 if (outputdev == NULL) { 810 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 811 } 812 if (errdev == NULL) { 813 errdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 814 } 815 /* Initializes output console first */ 816 if (outputdev != NULL) { 817 /* need to set a console if not done above. */ 818 console_doenv(stdout, outputdev); 819 } 820 if (errdev != NULL) { 821 /* need to set a console if not done above. */ 822 console_doenv(stderr, errdev); 823 } 824 if (inputdev != NULL) { 825 /* need to set a console if not done above. */ 826 console_doenv(stdin, inputdev); 827 } 828 829 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 830 done: 831 #endif 832 833 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 834 stdio_print_current_devices(); 835 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 836 #ifdef CONFIG_VIDCONSOLE_AS_LCD 837 if (strstr(stdoutname, "lcd")) 838 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n"); 839 #endif 840 841 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 842 /* set the environment variables (will overwrite previous env settings) */ 843 for (i = 0; i < 3; i++) { 844 env_set(stdio_names[i], stdio_devices[i]->name); 845 } 846 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 847 848 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 849 850 #if 0 851 /* If nothing usable installed, use only the initial console */ 852 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 853 return 0; 854 #endif 855 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 856 return 0; 857 } 858 859 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 860 861 /* Called after the relocation - use desired console functions */ 862 int console_init_r(void) 863 { 864 struct stdio_dev *inputdev = NULL, *outputdev = NULL; 865 int i; 866 struct list_head *list = stdio_get_list(); 867 struct list_head *pos; 868 struct stdio_dev *dev; 869 870 console_update_silent(); 871 872 #ifdef CONFIG_SPLASH_SCREEN 873 /* 874 * suppress all output if splash screen is enabled and we have 875 * a bmp to display. We redirect the output from frame buffer 876 * console to serial console in this case or suppress it if 877 * "silent" mode was requested. 878 */ 879 if (env_get("splashimage") != NULL) { 880 if (!(gd->flags & GD_FLG_SILENT)) 881 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial"); 882 } 883 #endif 884 885 /* Scan devices looking for input and output devices */ 886 list_for_each(pos, list) { 887 dev = list_entry(pos, struct stdio_dev, list); 888 889 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) { 890 inputdev = dev; 891 } 892 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) { 893 outputdev = dev; 894 } 895 if(inputdev && outputdev) 896 break; 897 } 898 899 /* Initializes output console first */ 900 if (outputdev != NULL) { 901 console_setfile(stdout, outputdev); 902 console_setfile(stderr, outputdev); 903 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 904 console_devices[stdout][0] = outputdev; 905 console_devices[stderr][0] = outputdev; 906 #endif 907 } 908 909 /* Initializes input console */ 910 if (inputdev != NULL) { 911 console_setfile(stdin, inputdev); 912 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 913 console_devices[stdin][0] = inputdev; 914 #endif 915 } 916 917 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 918 stdio_print_current_devices(); 919 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 920 921 /* Setting environment variables */ 922 for (i = 0; i < 3; i++) { 923 env_set(stdio_names[i], stdio_devices[i]->name); 924 } 925 926 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 927 928 #if 0 929 /* If nothing usable installed, use only the initial console */ 930 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 931 return 0; 932 #endif 933 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 934 return 0; 935 } 936 937 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 938