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 #include <vsprintf.h> 23 24 DECLARE_GLOBAL_DATA_PTR; 25 26 static int on_console(const char *name, const char *value, enum env_op op, 27 int flags) 28 { 29 int console = -1; 30 31 /* Check for console redirection */ 32 if (strcmp(name, "stdin") == 0) 33 console = stdin; 34 else if (strcmp(name, "stdout") == 0) 35 console = stdout; 36 else if (strcmp(name, "stderr") == 0) 37 console = stderr; 38 39 /* if not actually setting a console variable, we don't care */ 40 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0) 41 return 0; 42 43 switch (op) { 44 case env_op_create: 45 case env_op_overwrite: 46 47 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 48 if (iomux_doenv(console, value)) 49 return 1; 50 #else 51 /* Try assigning specified device */ 52 if (console_assign(console, value) < 0) 53 return 1; 54 #endif 55 return 0; 56 57 case env_op_delete: 58 if ((flags & H_FORCE) == 0) 59 printf("Can't delete \"%s\"\n", name); 60 return 1; 61 62 default: 63 return 0; 64 } 65 } 66 U_BOOT_ENV_CALLBACK(console, on_console); 67 68 #ifdef CONFIG_SILENT_CONSOLE 69 static int on_silent(const char *name, const char *value, enum env_op op, 70 int flags) 71 { 72 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET) 73 if (flags & H_INTERACTIVE) 74 return 0; 75 #endif 76 #if !CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC) 77 if ((flags & H_INTERACTIVE) == 0) 78 return 0; 79 #endif 80 81 if (value != NULL) 82 gd->flags |= GD_FLG_SILENT; 83 else 84 gd->flags &= ~GD_FLG_SILENT; 85 86 return 0; 87 } 88 U_BOOT_ENV_CALLBACK(silent, on_silent); 89 #endif 90 91 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) 92 /* 93 * if overwrite_console returns 1, the stdin, stderr and stdout 94 * are switched to the serial port, else the settings in the 95 * environment are used 96 */ 97 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 98 extern int overwrite_console(void); 99 #define OVERWRITE_CONSOLE overwrite_console() 100 #else 101 #define OVERWRITE_CONSOLE 0 102 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */ 103 104 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 105 106 static int console_setfile(int file, struct stdio_dev * dev) 107 { 108 int error = 0; 109 110 if (dev == NULL) 111 return -1; 112 113 switch (file) { 114 case stdin: 115 case stdout: 116 case stderr: 117 /* Start new device */ 118 if (dev->start) { 119 error = dev->start(dev); 120 /* If it's not started dont use it */ 121 if (error < 0) 122 break; 123 } 124 125 /* Assign the new device (leaving the existing one started) */ 126 stdio_devices[file] = dev; 127 128 /* 129 * Update monitor functions 130 * (to use the console stuff by other applications) 131 */ 132 switch (file) { 133 case stdin: 134 gd->jt->getc = getc; 135 gd->jt->tstc = tstc; 136 break; 137 case stdout: 138 gd->jt->putc = putc; 139 gd->jt->puts = puts; 140 gd->jt->printf = printf; 141 break; 142 } 143 break; 144 145 default: /* Invalid file ID */ 146 error = -1; 147 } 148 return error; 149 } 150 151 /** 152 * console_dev_is_serial() - Check if a stdio device is a serial device 153 * 154 * @sdev: Device to check 155 * @return true if this device is in the serial uclass (or for pre-driver-model, 156 * whether it is called "serial". 157 */ 158 static bool console_dev_is_serial(struct stdio_dev *sdev) 159 { 160 bool is_serial; 161 162 #ifdef CONFIG_DM_SERIAL 163 if (sdev->flags & DEV_FLAGS_DM) { 164 struct udevice *dev = sdev->priv; 165 166 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL; 167 } else 168 #endif 169 is_serial = !strcmp(sdev->name, "serial"); 170 171 return is_serial; 172 } 173 174 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 175 /** Console I/O multiplexing *******************************************/ 176 177 static struct stdio_dev *tstcdev; 178 struct stdio_dev **console_devices[MAX_FILES]; 179 int cd_count[MAX_FILES]; 180 181 /* 182 * This depends on tstc() always being called before getc(). 183 * This is guaranteed to be true because this routine is called 184 * only from fgetc() which assures it. 185 * No attempt is made to demultiplex multiple input sources. 186 */ 187 static int console_getc(int file) 188 { 189 unsigned char ret; 190 191 /* This is never called with testcdev == NULL */ 192 ret = tstcdev->getc(tstcdev); 193 tstcdev = NULL; 194 return ret; 195 } 196 197 static int console_tstc(int file) 198 { 199 int i, ret; 200 struct stdio_dev *dev; 201 202 disable_ctrlc(1); 203 for (i = 0; i < cd_count[file]; i++) { 204 dev = console_devices[file][i]; 205 if (dev->tstc != NULL) { 206 ret = dev->tstc(dev); 207 if (ret > 0) { 208 tstcdev = dev; 209 disable_ctrlc(0); 210 return ret; 211 } 212 } 213 } 214 disable_ctrlc(0); 215 216 return 0; 217 } 218 219 static void console_putc(int file, const char c) 220 { 221 int i; 222 struct stdio_dev *dev; 223 224 for (i = 0; i < cd_count[file]; i++) { 225 dev = console_devices[file][i]; 226 if (dev->putc != NULL) 227 dev->putc(dev, c); 228 } 229 } 230 231 static void console_puts_noserial(int file, const char *s) 232 { 233 int i; 234 struct stdio_dev *dev; 235 236 for (i = 0; i < cd_count[file]; i++) { 237 dev = console_devices[file][i]; 238 if (dev->puts != NULL && !console_dev_is_serial(dev)) 239 dev->puts(dev, s); 240 } 241 } 242 243 static void console_puts(int file, const char *s) 244 { 245 int i; 246 struct stdio_dev *dev; 247 248 for (i = 0; i < cd_count[file]; i++) { 249 dev = console_devices[file][i]; 250 if (dev->puts != NULL) 251 dev->puts(dev, s); 252 } 253 } 254 255 static inline void console_doenv(int file, struct stdio_dev *dev) 256 { 257 iomux_doenv(file, dev->name); 258 } 259 260 static void console_clear(int file) 261 { 262 int i; 263 struct stdio_dev *dev; 264 265 for (i = 0; i < cd_count[file]; i++) { 266 dev = console_devices[file][i]; 267 if (dev->clear != NULL) 268 dev->clear(dev); 269 } 270 } 271 #else 272 static inline int console_getc(int file) 273 { 274 return stdio_devices[file]->getc(stdio_devices[file]); 275 } 276 277 static inline int console_tstc(int file) 278 { 279 return stdio_devices[file]->tstc(stdio_devices[file]); 280 } 281 282 static inline void console_putc(int file, const char c) 283 { 284 stdio_devices[file]->putc(stdio_devices[file], c); 285 } 286 287 static inline void console_puts_noserial(int file, const char *s) 288 { 289 if (!console_dev_is_serial(stdio_devices[file])) 290 stdio_devices[file]->puts(stdio_devices[file], s); 291 } 292 293 static inline void console_puts(int file, const char *s) 294 { 295 stdio_devices[file]->puts(stdio_devices[file], s); 296 } 297 298 static inline void console_clear(int file) 299 { 300 if (stdio_devices[file]->clear) 301 stdio_devices[file]->clear(stdio_devices[file]); 302 } 303 304 static inline void console_doenv(int file, struct stdio_dev *dev) 305 { 306 console_setfile(file, dev); 307 } 308 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */ 309 310 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/ 311 312 int serial_printf(const char *fmt, ...) 313 { 314 va_list args; 315 uint i; 316 char printbuffer[CONFIG_SYS_PBSIZE]; 317 318 va_start(args, fmt); 319 320 /* For this to work, printbuffer must be larger than 321 * anything we ever want to print. 322 */ 323 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 324 va_end(args); 325 326 serial_puts(printbuffer); 327 return i; 328 } 329 330 int fgetc(int file) 331 { 332 if (file < MAX_FILES) { 333 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 334 /* 335 * Effectively poll for input wherever it may be available. 336 */ 337 for (;;) { 338 WATCHDOG_RESET(); 339 /* 340 * Upper layer may have already called tstc() so 341 * check for that first. 342 */ 343 if (tstcdev != NULL) 344 return console_getc(file); 345 console_tstc(file); 346 #ifdef CONFIG_WATCHDOG 347 /* 348 * If the watchdog must be rate-limited then it should 349 * already be handled in board-specific code. 350 */ 351 udelay(1); 352 #endif 353 } 354 #else 355 return console_getc(file); 356 #endif 357 } 358 359 return -1; 360 } 361 362 int ftstc(int file) 363 { 364 if (file < MAX_FILES) 365 return console_tstc(file); 366 367 return -1; 368 } 369 370 void fputc(int file, const char c) 371 { 372 if (file < MAX_FILES) 373 console_putc(file, c); 374 } 375 376 void fputs(int file, const char *s) 377 { 378 if (file < MAX_FILES) 379 console_puts(file, s); 380 } 381 382 void fclear(int file) 383 { 384 if (file < MAX_FILES) 385 console_clear(file); 386 } 387 388 int fprintf(int file, const char *fmt, ...) 389 { 390 va_list args; 391 uint i; 392 char printbuffer[CONFIG_SYS_PBSIZE]; 393 394 va_start(args, fmt); 395 396 /* For this to work, printbuffer must be larger than 397 * anything we ever want to print. 398 */ 399 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 400 va_end(args); 401 402 /* Send to desired file */ 403 fputs(file, printbuffer); 404 return i; 405 } 406 407 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/ 408 409 int getc(void) 410 { 411 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE) 412 return 0; 413 414 if (!gd->have_console) 415 return 0; 416 417 #ifdef CONFIG_CONSOLE_RECORD 418 if (gd->console_in.start) { 419 int ch; 420 421 ch = membuff_getbyte((struct membuff *)&gd->console_in); 422 if (ch != -1) 423 return 1; 424 } 425 #endif 426 if (gd->flags & GD_FLG_DEVINIT) { 427 /* Get from the standard input */ 428 return fgetc(stdin); 429 } 430 431 /* Send directly to the handler */ 432 return serial_getc(); 433 } 434 435 int tstc(void) 436 { 437 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE) 438 return 0; 439 440 if (!gd->have_console) 441 return 0; 442 #ifdef CONFIG_CONSOLE_RECORD 443 if (gd->console_in.start) { 444 if (membuff_peekbyte((struct membuff *)&gd->console_in) != -1) 445 return 1; 446 } 447 #endif 448 if (gd->flags & GD_FLG_DEVINIT) { 449 /* Test the standard input */ 450 return ftstc(stdin); 451 } 452 453 /* Send directly to the handler */ 454 return serial_tstc(); 455 } 456 457 void flushc(void) 458 { 459 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE) 460 return; 461 462 if (gd->flags & GD_FLG_DEVINIT) 463 fclear(stdout); 464 else 465 serial_clear(); 466 } 467 468 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0 469 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1 470 471 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 472 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ) 473 474 static void pre_console_putc(const char c) 475 { 476 char *buffer; 477 478 buffer = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ); 479 480 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c; 481 482 unmap_sysmem(buffer); 483 } 484 485 static void print_pre_console_buffer(int flushpoint) 486 { 487 unsigned long in = 0, out = 0; 488 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1]; 489 char *buf_in; 490 491 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ); 492 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ) 493 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ; 494 495 while (in < gd->precon_buf_idx) 496 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)]; 497 unmap_sysmem(buf_in); 498 499 buf_out[out] = 0; 500 501 switch (flushpoint) { 502 case PRE_CONSOLE_FLUSHPOINT1_SERIAL: 503 puts(buf_out); 504 break; 505 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL: 506 console_puts_noserial(stdout, buf_out); 507 break; 508 } 509 } 510 #else 511 static inline void pre_console_putc(const char c) {} 512 static inline void print_pre_console_buffer(int flushpoint) {} 513 #endif 514 515 void putc(const char c) 516 { 517 if (!gd || gd->flags & GD_FLG_DISABLE_CONSOLE) 518 return; 519 520 #ifdef CONFIG_DEBUG_UART 521 /* if we don't have a console yet, use the debug UART */ 522 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 523 printch(c); 524 return; 525 } 526 #endif 527 #ifdef CONFIG_CONSOLE_RECORD 528 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start) 529 membuff_putbyte((struct membuff *)&gd->console_out, c); 530 #endif 531 #ifdef CONFIG_SILENT_CONSOLE 532 if (gd->flags & GD_FLG_SILENT) 533 return; 534 #endif 535 536 if (!gd->have_console) 537 return pre_console_putc(c); 538 539 if (gd->flags & GD_FLG_DEVINIT) { 540 /* Send to the standard output */ 541 fputc(stdout, c); 542 } else { 543 /* Send directly to the handler */ 544 pre_console_putc(c); 545 serial_putc(c); 546 } 547 } 548 549 #if ((!defined(CONFIG_SPL_BUILD) || !defined(CONFIG_USE_TINY_PRINTF)) && \ 550 defined(CONFIG_BOOTSTAGE_PRINTF_TIMESTAMP)) 551 static void vspfunc(char *buf, size_t size, char *format, ...) 552 { 553 va_list ap; 554 555 va_start(ap, format); 556 vsnprintf(buf, size, format, ap); 557 va_end(ap); 558 } 559 560 void puts(const char *s) 561 { 562 unsigned long ts_sec, ts_msec, ticks; 563 char pr_timestamp[32], *p; 564 565 while (*s) { 566 if (*s == '\n') { 567 gd->new_line = 1; 568 putc(*s++); 569 continue; 570 } 571 572 if (gd->new_line) { 573 gd->new_line = 0; 574 ticks = (get_ticks() / 24ULL); 575 ts_sec = ticks / 1000000; 576 ts_msec = ticks % 1000000; 577 vspfunc(pr_timestamp, sizeof(pr_timestamp), 578 "[%5lu.%06lu] ", ts_sec, ts_msec); 579 p = pr_timestamp; 580 while (*p) 581 putc(*p++); 582 } 583 584 putc(*s++); 585 } 586 } 587 #else 588 void puts(const char *s) 589 { 590 while (*s) 591 putc(*s++); 592 } 593 #endif 594 595 596 #ifdef CONFIG_CONSOLE_RECORD 597 int console_record_init(void) 598 { 599 int ret; 600 601 ret = membuff_new((struct membuff *)&gd->console_out, 602 CONFIG_CONSOLE_RECORD_OUT_SIZE); 603 if (ret) 604 return ret; 605 ret = membuff_new((struct membuff *)&gd->console_in, 606 CONFIG_CONSOLE_RECORD_IN_SIZE); 607 608 return ret; 609 } 610 611 void console_record_reset(void) 612 { 613 membuff_purge((struct membuff *)&gd->console_out); 614 membuff_purge((struct membuff *)&gd->console_in); 615 } 616 617 void console_record_reset_enable(void) 618 { 619 console_record_reset(); 620 gd->flags |= GD_FLG_RECORD; 621 } 622 623 /* Print and remove data from buffer */ 624 void console_record_print_purge(void) 625 { 626 unsigned long flags; 627 char c; 628 629 if (!gd || !(gd->flags & GD_FLG_RECORD)) 630 return; 631 632 /* Remove some bits to avoid running unexpected branch in putc() */ 633 flags = gd->flags; 634 gd->flags &= ~(GD_FLG_RECORD | GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE); 635 636 printf("\n\n## Console Record: \n"); 637 while (!membuff_isempty((struct membuff *)&gd->console_out)) { 638 c = membuff_getbyte((struct membuff *)&gd->console_out); 639 putc(c); 640 } 641 642 gd->flags = flags; 643 } 644 #endif 645 646 /* test if ctrl-c was pressed */ 647 static int ctrlc_disabled = 0; /* see disable_ctrl() */ 648 static int ctrlc_was_pressed = 0; 649 int ctrlc(void) 650 { 651 #ifndef CONFIG_SANDBOX 652 if (!ctrlc_disabled && gd->have_console) { 653 if (tstc()) { 654 switch (getc()) { 655 case 0x03: /* ^C - Control C */ 656 ctrlc_was_pressed = 1; 657 return 1; 658 default: 659 break; 660 } 661 } 662 } 663 #endif 664 665 return 0; 666 } 667 /* Reads user's confirmation. 668 Returns 1 if user's input is "y", "Y", "yes" or "YES" 669 */ 670 int confirm_yesno(void) 671 { 672 int i; 673 char str_input[5]; 674 675 /* Flush input */ 676 while (tstc()) 677 getc(); 678 i = 0; 679 while (i < sizeof(str_input)) { 680 str_input[i] = getc(); 681 putc(str_input[i]); 682 if (str_input[i] == '\r') 683 break; 684 i++; 685 } 686 putc('\n'); 687 if (strncmp(str_input, "y\r", 2) == 0 || 688 strncmp(str_input, "Y\r", 2) == 0 || 689 strncmp(str_input, "yes\r", 4) == 0 || 690 strncmp(str_input, "YES\r", 4) == 0) 691 return 1; 692 return 0; 693 } 694 /* pass 1 to disable ctrlc() checking, 0 to enable. 695 * returns previous state 696 */ 697 int disable_ctrlc(int disable) 698 { 699 int prev = ctrlc_disabled; /* save previous state */ 700 701 ctrlc_disabled = disable; 702 return prev; 703 } 704 705 int had_ctrlc (void) 706 { 707 return ctrlc_was_pressed; 708 } 709 710 void clear_ctrlc(void) 711 { 712 ctrlc_was_pressed = 0; 713 } 714 715 /** U-Boot INIT FUNCTIONS *************************************************/ 716 717 struct stdio_dev *search_device(int flags, const char *name) 718 { 719 struct stdio_dev *dev; 720 721 dev = stdio_get_by_name(name); 722 #ifdef CONFIG_VIDCONSOLE_AS_LCD 723 if (!dev && !strcmp(name, "lcd")) 724 dev = stdio_get_by_name("vidconsole"); 725 #endif 726 727 if (dev && (dev->flags & flags)) 728 return dev; 729 730 return NULL; 731 } 732 733 int console_assign(int file, const char *devname) 734 { 735 int flag; 736 struct stdio_dev *dev; 737 738 /* Check for valid file */ 739 switch (file) { 740 case stdin: 741 flag = DEV_FLAGS_INPUT; 742 break; 743 case stdout: 744 case stderr: 745 flag = DEV_FLAGS_OUTPUT; 746 break; 747 default: 748 return -1; 749 } 750 751 /* Check for valid device name */ 752 753 dev = search_device(flag, devname); 754 755 if (dev) 756 return console_setfile(file, dev); 757 758 return -1; 759 } 760 761 static void console_update_silent(void) 762 { 763 #ifdef CONFIG_SILENT_CONSOLE 764 if (env_get("silent") != NULL) { 765 printf("U-Boot: enable silent console\n"); 766 gd->flags |= GD_FLG_SILENT; 767 } else { 768 gd->flags &= ~GD_FLG_SILENT; 769 } 770 #endif 771 } 772 773 int console_announce_r(void) 774 { 775 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 776 char buf[DISPLAY_OPTIONS_BANNER_LENGTH]; 777 778 display_options_get_banner(false, buf, sizeof(buf)); 779 780 console_puts_noserial(stdout, buf); 781 #endif 782 783 return 0; 784 } 785 786 /* Called before relocation - use serial functions */ 787 int console_init_f(void) 788 { 789 gd->have_console = 1; 790 791 console_update_silent(); 792 793 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL); 794 795 return 0; 796 } 797 798 void stdio_print_current_devices(void) 799 { 800 /* Print information */ 801 puts("In: "); 802 if (stdio_devices[stdin] == NULL) { 803 puts("No input devices available!\n"); 804 } else { 805 printf ("%s\n", stdio_devices[stdin]->name); 806 } 807 808 puts("Out: "); 809 if (stdio_devices[stdout] == NULL) { 810 puts("No output devices available!\n"); 811 } else { 812 printf ("%s\n", stdio_devices[stdout]->name); 813 } 814 815 puts("Err: "); 816 if (stdio_devices[stderr] == NULL) { 817 puts("No error devices available!\n"); 818 } else { 819 printf ("%s\n", stdio_devices[stderr]->name); 820 } 821 } 822 823 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) 824 /* Called after the relocation - use desired console functions */ 825 int console_init_r(void) 826 { 827 char *stdinname, *stdoutname, *stderrname; 828 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL; 829 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 830 int i; 831 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 832 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 833 int iomux_err = 0; 834 #endif 835 836 /* set default handlers at first */ 837 gd->jt->getc = serial_getc; 838 gd->jt->tstc = serial_tstc; 839 gd->jt->putc = serial_putc; 840 gd->jt->puts = serial_puts; 841 gd->jt->printf = serial_printf; 842 843 /* stdin stdout and stderr are in environment */ 844 /* scan for it */ 845 stdinname = env_get("stdin"); 846 stdoutname = env_get("stdout"); 847 stderrname = env_get("stderr"); 848 849 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */ 850 inputdev = search_device(DEV_FLAGS_INPUT, stdinname); 851 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname); 852 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname); 853 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 854 iomux_err = iomux_doenv(stdin, stdinname); 855 iomux_err += iomux_doenv(stdout, stdoutname); 856 iomux_err += iomux_doenv(stderr, stderrname); 857 if (!iomux_err) 858 /* Successful, so skip all the code below. */ 859 goto done; 860 #endif 861 } 862 /* if the devices are overwritten or not found, use default device */ 863 if (inputdev == NULL) { 864 inputdev = search_device(DEV_FLAGS_INPUT, "serial"); 865 } 866 if (outputdev == NULL) { 867 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 868 } 869 if (errdev == NULL) { 870 errdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 871 } 872 /* Initializes output console first */ 873 if (outputdev != NULL) { 874 /* need to set a console if not done above. */ 875 console_doenv(stdout, outputdev); 876 } 877 if (errdev != NULL) { 878 /* need to set a console if not done above. */ 879 console_doenv(stderr, errdev); 880 } 881 if (inputdev != NULL) { 882 /* need to set a console if not done above. */ 883 console_doenv(stdin, inputdev); 884 } 885 886 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 887 done: 888 #endif 889 890 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 891 stdio_print_current_devices(); 892 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 893 #ifdef CONFIG_VIDCONSOLE_AS_LCD 894 if (strstr(stdoutname, "lcd")) 895 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n"); 896 #endif 897 898 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 899 /* set the environment variables (will overwrite previous env settings) */ 900 for (i = 0; i < 3; i++) { 901 env_set(stdio_names[i], stdio_devices[i]->name); 902 } 903 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 904 905 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 906 907 #if 0 908 /* If nothing usable installed, use only the initial console */ 909 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 910 return 0; 911 #endif 912 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 913 return 0; 914 } 915 916 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 917 918 /* Called after the relocation - use desired console functions */ 919 int console_init_r(void) 920 { 921 struct stdio_dev *inputdev = NULL, *outputdev = NULL; 922 int i; 923 struct list_head *list = stdio_get_list(); 924 struct list_head *pos; 925 struct stdio_dev *dev; 926 927 console_update_silent(); 928 929 #ifdef CONFIG_SPLASH_SCREEN 930 /* 931 * suppress all output if splash screen is enabled and we have 932 * a bmp to display. We redirect the output from frame buffer 933 * console to serial console in this case or suppress it if 934 * "silent" mode was requested. 935 */ 936 if (env_get("splashimage") != NULL) { 937 if (!(gd->flags & GD_FLG_SILENT)) 938 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial"); 939 } 940 #endif 941 942 /* Scan devices looking for input and output devices */ 943 list_for_each(pos, list) { 944 dev = list_entry(pos, struct stdio_dev, list); 945 946 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) { 947 inputdev = dev; 948 } 949 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) { 950 outputdev = dev; 951 } 952 if(inputdev && outputdev) 953 break; 954 } 955 956 /* Initializes output console first */ 957 if (outputdev != NULL) { 958 console_setfile(stdout, outputdev); 959 console_setfile(stderr, outputdev); 960 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 961 console_devices[stdout][0] = outputdev; 962 console_devices[stderr][0] = outputdev; 963 #endif 964 } 965 966 /* Initializes input console */ 967 if (inputdev != NULL) { 968 console_setfile(stdin, inputdev); 969 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 970 console_devices[stdin][0] = inputdev; 971 #endif 972 } 973 974 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 975 stdio_print_current_devices(); 976 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 977 978 /* Setting environment variables */ 979 for (i = 0; i < 3; i++) { 980 env_set(stdio_names[i], stdio_devices[i]->name); 981 } 982 983 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 984 985 #if 0 986 /* If nothing usable installed, use only the initial console */ 987 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 988 return 0; 989 #endif 990 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 991 return 0; 992 } 993 994 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 995