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 pre_console_puts(const char *s) 430 { 431 while (*s) 432 pre_console_putc(*s++); 433 } 434 435 static void print_pre_console_buffer(int flushpoint) 436 { 437 unsigned long in = 0, out = 0; 438 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1]; 439 char *buf_in; 440 441 buf_in = map_sysmem(CONFIG_PRE_CON_BUF_ADDR, CONFIG_PRE_CON_BUF_SZ); 442 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ) 443 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ; 444 445 while (in < gd->precon_buf_idx) 446 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)]; 447 unmap_sysmem(buf_in); 448 449 buf_out[out] = 0; 450 451 switch (flushpoint) { 452 case PRE_CONSOLE_FLUSHPOINT1_SERIAL: 453 puts(buf_out); 454 break; 455 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL: 456 console_puts_noserial(stdout, buf_out); 457 break; 458 } 459 } 460 #else 461 static inline void pre_console_putc(const char c) {} 462 static inline void pre_console_puts(const char *s) {} 463 static inline void print_pre_console_buffer(int flushpoint) {} 464 #endif 465 466 void putc(const char c) 467 { 468 #ifdef CONFIG_DEBUG_UART 469 /* if we don't have a console yet, use the debug UART */ 470 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 471 printch(c); 472 return; 473 } 474 #endif 475 #ifdef CONFIG_CONSOLE_RECORD 476 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start) 477 membuff_putbyte(&gd->console_out, c); 478 #endif 479 #ifdef CONFIG_SILENT_CONSOLE 480 if (gd->flags & GD_FLG_SILENT) 481 return; 482 #endif 483 484 #ifdef CONFIG_DISABLE_CONSOLE 485 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 486 return; 487 #endif 488 489 if (!gd->have_console) 490 return pre_console_putc(c); 491 492 if (gd->flags & GD_FLG_DEVINIT) { 493 /* Send to the standard output */ 494 fputc(stdout, c); 495 } else { 496 /* Send directly to the handler */ 497 pre_console_putc(c); 498 serial_putc(c); 499 } 500 } 501 502 void puts(const char *s) 503 { 504 #ifdef CONFIG_DEBUG_UART 505 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 506 while (*s) { 507 int ch = *s++; 508 509 printch(ch); 510 } 511 return; 512 } 513 #endif 514 #ifdef CONFIG_CONSOLE_RECORD 515 if (gd && (gd->flags & GD_FLG_RECORD) && gd->console_out.start) 516 membuff_put(&gd->console_out, s, strlen(s)); 517 #endif 518 #ifdef CONFIG_SILENT_CONSOLE 519 if (gd->flags & GD_FLG_SILENT) 520 return; 521 #endif 522 523 #ifdef CONFIG_DISABLE_CONSOLE 524 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 525 return; 526 #endif 527 528 if (!gd->have_console) 529 return pre_console_puts(s); 530 531 if (gd->flags & GD_FLG_DEVINIT) { 532 /* Send to the standard output */ 533 fputs(stdout, s); 534 } else { 535 /* Send directly to the handler */ 536 pre_console_puts(s); 537 serial_puts(s); 538 } 539 } 540 541 #ifdef CONFIG_CONSOLE_RECORD 542 int console_record_init(void) 543 { 544 int ret; 545 546 ret = membuff_new(&gd->console_out, CONFIG_CONSOLE_RECORD_OUT_SIZE); 547 if (ret) 548 return ret; 549 ret = membuff_new(&gd->console_in, CONFIG_CONSOLE_RECORD_IN_SIZE); 550 551 return ret; 552 } 553 554 void console_record_reset(void) 555 { 556 membuff_purge(&gd->console_out); 557 membuff_purge(&gd->console_in); 558 } 559 560 void console_record_reset_enable(void) 561 { 562 console_record_reset(); 563 gd->flags |= GD_FLG_RECORD; 564 } 565 #endif 566 567 /* test if ctrl-c was pressed */ 568 static int ctrlc_disabled = 0; /* see disable_ctrl() */ 569 static int ctrlc_was_pressed = 0; 570 int ctrlc(void) 571 { 572 #ifndef CONFIG_SANDBOX 573 if (!ctrlc_disabled && gd->have_console) { 574 if (tstc()) { 575 switch (getc()) { 576 case 0x03: /* ^C - Control C */ 577 ctrlc_was_pressed = 1; 578 return 1; 579 default: 580 break; 581 } 582 } 583 } 584 #endif 585 586 return 0; 587 } 588 /* Reads user's confirmation. 589 Returns 1 if user's input is "y", "Y", "yes" or "YES" 590 */ 591 int confirm_yesno(void) 592 { 593 int i; 594 char str_input[5]; 595 596 /* Flush input */ 597 while (tstc()) 598 getc(); 599 i = 0; 600 while (i < sizeof(str_input)) { 601 str_input[i] = getc(); 602 putc(str_input[i]); 603 if (str_input[i] == '\r') 604 break; 605 i++; 606 } 607 putc('\n'); 608 if (strncmp(str_input, "y\r", 2) == 0 || 609 strncmp(str_input, "Y\r", 2) == 0 || 610 strncmp(str_input, "yes\r", 4) == 0 || 611 strncmp(str_input, "YES\r", 4) == 0) 612 return 1; 613 return 0; 614 } 615 /* pass 1 to disable ctrlc() checking, 0 to enable. 616 * returns previous state 617 */ 618 int disable_ctrlc(int disable) 619 { 620 int prev = ctrlc_disabled; /* save previous state */ 621 622 ctrlc_disabled = disable; 623 return prev; 624 } 625 626 int had_ctrlc (void) 627 { 628 return ctrlc_was_pressed; 629 } 630 631 void clear_ctrlc(void) 632 { 633 ctrlc_was_pressed = 0; 634 } 635 636 /** U-Boot INIT FUNCTIONS *************************************************/ 637 638 struct stdio_dev *search_device(int flags, const char *name) 639 { 640 struct stdio_dev *dev; 641 642 dev = stdio_get_by_name(name); 643 #ifdef CONFIG_VIDCONSOLE_AS_LCD 644 if (!dev && !strcmp(name, "lcd")) 645 dev = stdio_get_by_name("vidconsole"); 646 #endif 647 648 if (dev && (dev->flags & flags)) 649 return dev; 650 651 return NULL; 652 } 653 654 int console_assign(int file, const char *devname) 655 { 656 int flag; 657 struct stdio_dev *dev; 658 659 /* Check for valid file */ 660 switch (file) { 661 case stdin: 662 flag = DEV_FLAGS_INPUT; 663 break; 664 case stdout: 665 case stderr: 666 flag = DEV_FLAGS_OUTPUT; 667 break; 668 default: 669 return -1; 670 } 671 672 /* Check for valid device name */ 673 674 dev = search_device(flag, devname); 675 676 if (dev) 677 return console_setfile(file, dev); 678 679 return -1; 680 } 681 682 static void console_update_silent(void) 683 { 684 #ifdef CONFIG_SILENT_CONSOLE 685 if (getenv("silent") != NULL) 686 gd->flags |= GD_FLG_SILENT; 687 else 688 gd->flags &= ~GD_FLG_SILENT; 689 #endif 690 } 691 692 int console_announce_r(void) 693 { 694 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER) 695 char buf[DISPLAY_OPTIONS_BANNER_LENGTH]; 696 697 display_options_get_banner(false, buf, sizeof(buf)); 698 699 console_puts_noserial(stdout, buf); 700 #endif 701 702 return 0; 703 } 704 705 /* Called before relocation - use serial functions */ 706 int console_init_f(void) 707 { 708 gd->have_console = 1; 709 710 console_update_silent(); 711 712 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL); 713 714 return 0; 715 } 716 717 void stdio_print_current_devices(void) 718 { 719 /* Print information */ 720 puts("In: "); 721 if (stdio_devices[stdin] == NULL) { 722 puts("No input devices available!\n"); 723 } else { 724 printf ("%s\n", stdio_devices[stdin]->name); 725 } 726 727 puts("Out: "); 728 if (stdio_devices[stdout] == NULL) { 729 puts("No output devices available!\n"); 730 } else { 731 printf ("%s\n", stdio_devices[stdout]->name); 732 } 733 734 puts("Err: "); 735 if (stdio_devices[stderr] == NULL) { 736 puts("No error devices available!\n"); 737 } else { 738 printf ("%s\n", stdio_devices[stderr]->name); 739 } 740 } 741 742 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) 743 /* Called after the relocation - use desired console functions */ 744 int console_init_r(void) 745 { 746 char *stdinname, *stdoutname, *stderrname; 747 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL; 748 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 749 int i; 750 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 751 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 752 int iomux_err = 0; 753 #endif 754 755 /* set default handlers at first */ 756 gd->jt->getc = serial_getc; 757 gd->jt->tstc = serial_tstc; 758 gd->jt->putc = serial_putc; 759 gd->jt->puts = serial_puts; 760 gd->jt->printf = serial_printf; 761 762 /* stdin stdout and stderr are in environment */ 763 /* scan for it */ 764 stdinname = getenv("stdin"); 765 stdoutname = getenv("stdout"); 766 stderrname = getenv("stderr"); 767 768 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */ 769 inputdev = search_device(DEV_FLAGS_INPUT, stdinname); 770 outputdev = search_device(DEV_FLAGS_OUTPUT, stdoutname); 771 errdev = search_device(DEV_FLAGS_OUTPUT, stderrname); 772 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 773 iomux_err = iomux_doenv(stdin, stdinname); 774 iomux_err += iomux_doenv(stdout, stdoutname); 775 iomux_err += iomux_doenv(stderr, stderrname); 776 if (!iomux_err) 777 /* Successful, so skip all the code below. */ 778 goto done; 779 #endif 780 } 781 /* if the devices are overwritten or not found, use default device */ 782 if (inputdev == NULL) { 783 inputdev = search_device(DEV_FLAGS_INPUT, "serial"); 784 } 785 if (outputdev == NULL) { 786 outputdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 787 } 788 if (errdev == NULL) { 789 errdev = search_device(DEV_FLAGS_OUTPUT, "serial"); 790 } 791 /* Initializes output console first */ 792 if (outputdev != NULL) { 793 /* need to set a console if not done above. */ 794 console_doenv(stdout, outputdev); 795 } 796 if (errdev != NULL) { 797 /* need to set a console if not done above. */ 798 console_doenv(stderr, errdev); 799 } 800 if (inputdev != NULL) { 801 /* need to set a console if not done above. */ 802 console_doenv(stdin, inputdev); 803 } 804 805 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 806 done: 807 #endif 808 809 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 810 stdio_print_current_devices(); 811 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 812 #ifdef CONFIG_VIDCONSOLE_AS_LCD 813 if (strstr(stdoutname, "lcd")) 814 printf("Warning: Please change 'lcd' to 'vidconsole' in stdout/stderr environment vars\n"); 815 #endif 816 817 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 818 /* set the environment variables (will overwrite previous env settings) */ 819 for (i = 0; i < 3; i++) { 820 setenv(stdio_names[i], stdio_devices[i]->name); 821 } 822 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 823 824 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 825 826 #if 0 827 /* If nothing usable installed, use only the initial console */ 828 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 829 return 0; 830 #endif 831 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 832 return 0; 833 } 834 835 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 836 837 /* Called after the relocation - use desired console functions */ 838 int console_init_r(void) 839 { 840 struct stdio_dev *inputdev = NULL, *outputdev = NULL; 841 int i; 842 struct list_head *list = stdio_get_list(); 843 struct list_head *pos; 844 struct stdio_dev *dev; 845 846 console_update_silent(); 847 848 #ifdef CONFIG_SPLASH_SCREEN 849 /* 850 * suppress all output if splash screen is enabled and we have 851 * a bmp to display. We redirect the output from frame buffer 852 * console to serial console in this case or suppress it if 853 * "silent" mode was requested. 854 */ 855 if (getenv("splashimage") != NULL) { 856 if (!(gd->flags & GD_FLG_SILENT)) 857 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial"); 858 } 859 #endif 860 861 /* Scan devices looking for input and output devices */ 862 list_for_each(pos, list) { 863 dev = list_entry(pos, struct stdio_dev, list); 864 865 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) { 866 inputdev = dev; 867 } 868 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) { 869 outputdev = dev; 870 } 871 if(inputdev && outputdev) 872 break; 873 } 874 875 /* Initializes output console first */ 876 if (outputdev != NULL) { 877 console_setfile(stdout, outputdev); 878 console_setfile(stderr, outputdev); 879 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 880 console_devices[stdout][0] = outputdev; 881 console_devices[stderr][0] = outputdev; 882 #endif 883 } 884 885 /* Initializes input console */ 886 if (inputdev != NULL) { 887 console_setfile(stdin, inputdev); 888 #if CONFIG_IS_ENABLED(CONSOLE_MUX) 889 console_devices[stdin][0] = inputdev; 890 #endif 891 } 892 893 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 894 stdio_print_current_devices(); 895 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 896 897 /* Setting environment variables */ 898 for (i = 0; i < 3; i++) { 899 setenv(stdio_names[i], stdio_devices[i]->name); 900 } 901 902 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 903 904 #if 0 905 /* If nothing usable installed, use only the initial console */ 906 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 907 return 0; 908 #endif 909 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 910 return 0; 911 } 912 913 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */ 914