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 <debug_uart.h> 10 #include <stdarg.h> 11 #include <iomux.h> 12 #include <malloc.h> 13 #include <os.h> 14 #include <serial.h> 15 #include <stdio_dev.h> 16 #include <exports.h> 17 #include <environment.h> 18 19 DECLARE_GLOBAL_DATA_PTR; 20 21 static int on_console(const char *name, const char *value, enum env_op op, 22 int flags) 23 { 24 int console = -1; 25 26 /* Check for console redirection */ 27 if (strcmp(name, "stdin") == 0) 28 console = stdin; 29 else if (strcmp(name, "stdout") == 0) 30 console = stdout; 31 else if (strcmp(name, "stderr") == 0) 32 console = stderr; 33 34 /* if not actually setting a console variable, we don't care */ 35 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0) 36 return 0; 37 38 switch (op) { 39 case env_op_create: 40 case env_op_overwrite: 41 42 #ifdef CONFIG_CONSOLE_MUX 43 if (iomux_doenv(console, value)) 44 return 1; 45 #else 46 /* Try assigning specified device */ 47 if (console_assign(console, value) < 0) 48 return 1; 49 #endif /* CONFIG_CONSOLE_MUX */ 50 return 0; 51 52 case env_op_delete: 53 if ((flags & H_FORCE) == 0) 54 printf("Can't delete \"%s\"\n", name); 55 return 1; 56 57 default: 58 return 0; 59 } 60 } 61 U_BOOT_ENV_CALLBACK(console, on_console); 62 63 #ifdef CONFIG_SILENT_CONSOLE 64 static int on_silent(const char *name, const char *value, enum env_op op, 65 int flags) 66 { 67 #ifndef CONFIG_SILENT_CONSOLE_UPDATE_ON_SET 68 if (flags & H_INTERACTIVE) 69 return 0; 70 #endif 71 #ifndef CONFIG_SILENT_CONSOLE_UPDATE_ON_RELOC 72 if ((flags & H_INTERACTIVE) == 0) 73 return 0; 74 #endif 75 76 if (value != NULL) 77 gd->flags |= GD_FLG_SILENT; 78 else 79 gd->flags &= ~GD_FLG_SILENT; 80 81 return 0; 82 } 83 U_BOOT_ENV_CALLBACK(silent, on_silent); 84 #endif 85 86 #ifdef CONFIG_SYS_CONSOLE_IS_IN_ENV 87 /* 88 * if overwrite_console returns 1, the stdin, stderr and stdout 89 * are switched to the serial port, else the settings in the 90 * environment are used 91 */ 92 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE 93 extern int overwrite_console(void); 94 #define OVERWRITE_CONSOLE overwrite_console() 95 #else 96 #define OVERWRITE_CONSOLE 0 97 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */ 98 99 #endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */ 100 101 static int console_setfile(int file, struct stdio_dev * dev) 102 { 103 int error = 0; 104 105 if (dev == NULL) 106 return -1; 107 108 switch (file) { 109 case stdin: 110 case stdout: 111 case stderr: 112 /* Start new device */ 113 if (dev->start) { 114 error = dev->start(dev); 115 /* If it's not started dont use it */ 116 if (error < 0) 117 break; 118 } 119 120 /* Assign the new device (leaving the existing one started) */ 121 stdio_devices[file] = dev; 122 123 /* 124 * Update monitor functions 125 * (to use the console stuff by other applications) 126 */ 127 switch (file) { 128 case stdin: 129 gd->jt->getc = getc; 130 gd->jt->tstc = tstc; 131 break; 132 case stdout: 133 gd->jt->putc = putc; 134 gd->jt->puts = puts; 135 gd->jt->printf = printf; 136 break; 137 } 138 break; 139 140 default: /* Invalid file ID */ 141 error = -1; 142 } 143 return error; 144 } 145 146 #if defined(CONFIG_CONSOLE_MUX) 147 /** Console I/O multiplexing *******************************************/ 148 149 static struct stdio_dev *tstcdev; 150 struct stdio_dev **console_devices[MAX_FILES]; 151 int cd_count[MAX_FILES]; 152 153 /* 154 * This depends on tstc() always being called before getc(). 155 * This is guaranteed to be true because this routine is called 156 * only from fgetc() which assures it. 157 * No attempt is made to demultiplex multiple input sources. 158 */ 159 static int console_getc(int file) 160 { 161 unsigned char ret; 162 163 /* This is never called with testcdev == NULL */ 164 ret = tstcdev->getc(tstcdev); 165 tstcdev = NULL; 166 return ret; 167 } 168 169 static int console_tstc(int file) 170 { 171 int i, ret; 172 struct stdio_dev *dev; 173 174 disable_ctrlc(1); 175 for (i = 0; i < cd_count[file]; i++) { 176 dev = console_devices[file][i]; 177 if (dev->tstc != NULL) { 178 ret = dev->tstc(dev); 179 if (ret > 0) { 180 tstcdev = dev; 181 disable_ctrlc(0); 182 return ret; 183 } 184 } 185 } 186 disable_ctrlc(0); 187 188 return 0; 189 } 190 191 static void console_putc(int file, const char c) 192 { 193 int i; 194 struct stdio_dev *dev; 195 196 for (i = 0; i < cd_count[file]; i++) { 197 dev = console_devices[file][i]; 198 if (dev->putc != NULL) 199 dev->putc(dev, c); 200 } 201 } 202 203 #ifdef CONFIG_PRE_CONSOLE_BUFFER 204 static void console_puts_noserial(int file, const char *s) 205 { 206 int i; 207 struct stdio_dev *dev; 208 209 for (i = 0; i < cd_count[file]; i++) { 210 dev = console_devices[file][i]; 211 if (dev->puts != NULL && strcmp(dev->name, "serial") != 0) 212 dev->puts(dev, s); 213 } 214 } 215 #endif 216 217 static void console_puts(int file, const char *s) 218 { 219 int i; 220 struct stdio_dev *dev; 221 222 for (i = 0; i < cd_count[file]; i++) { 223 dev = console_devices[file][i]; 224 if (dev->puts != NULL) 225 dev->puts(dev, s); 226 } 227 } 228 229 static inline void console_printdevs(int file) 230 { 231 iomux_printdevs(file); 232 } 233 234 static inline void console_doenv(int file, struct stdio_dev *dev) 235 { 236 iomux_doenv(file, dev->name); 237 } 238 #else 239 static inline int console_getc(int file) 240 { 241 return stdio_devices[file]->getc(stdio_devices[file]); 242 } 243 244 static inline int console_tstc(int file) 245 { 246 return stdio_devices[file]->tstc(stdio_devices[file]); 247 } 248 249 static inline void console_putc(int file, const char c) 250 { 251 stdio_devices[file]->putc(stdio_devices[file], c); 252 } 253 254 #ifdef CONFIG_PRE_CONSOLE_BUFFER 255 static inline void console_puts_noserial(int file, const char *s) 256 { 257 if (strcmp(stdio_devices[file]->name, "serial") != 0) 258 stdio_devices[file]->puts(stdio_devices[file], s); 259 } 260 #endif 261 262 static inline void console_puts(int file, const char *s) 263 { 264 stdio_devices[file]->puts(stdio_devices[file], s); 265 } 266 267 static inline void console_printdevs(int file) 268 { 269 printf("%s\n", stdio_devices[file]->name); 270 } 271 272 static inline void console_doenv(int file, struct stdio_dev *dev) 273 { 274 console_setfile(file, dev); 275 } 276 #endif /* defined(CONFIG_CONSOLE_MUX) */ 277 278 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/ 279 280 int serial_printf(const char *fmt, ...) 281 { 282 va_list args; 283 uint i; 284 char printbuffer[CONFIG_SYS_PBSIZE]; 285 286 va_start(args, fmt); 287 288 /* For this to work, printbuffer must be larger than 289 * anything we ever want to print. 290 */ 291 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 292 va_end(args); 293 294 serial_puts(printbuffer); 295 return i; 296 } 297 298 int fgetc(int file) 299 { 300 if (file < MAX_FILES) { 301 #if defined(CONFIG_CONSOLE_MUX) 302 /* 303 * Effectively poll for input wherever it may be available. 304 */ 305 for (;;) { 306 /* 307 * Upper layer may have already called tstc() so 308 * check for that first. 309 */ 310 if (tstcdev != NULL) 311 return console_getc(file); 312 console_tstc(file); 313 #ifdef CONFIG_WATCHDOG 314 /* 315 * If the watchdog must be rate-limited then it should 316 * already be handled in board-specific code. 317 */ 318 udelay(1); 319 #endif 320 } 321 #else 322 return console_getc(file); 323 #endif 324 } 325 326 return -1; 327 } 328 329 int ftstc(int file) 330 { 331 if (file < MAX_FILES) 332 return console_tstc(file); 333 334 return -1; 335 } 336 337 void fputc(int file, const char c) 338 { 339 if (file < MAX_FILES) 340 console_putc(file, c); 341 } 342 343 void fputs(int file, const char *s) 344 { 345 if (file < MAX_FILES) 346 console_puts(file, s); 347 } 348 349 int fprintf(int file, const char *fmt, ...) 350 { 351 va_list args; 352 uint i; 353 char printbuffer[CONFIG_SYS_PBSIZE]; 354 355 va_start(args, fmt); 356 357 /* For this to work, printbuffer must be larger than 358 * anything we ever want to print. 359 */ 360 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 361 va_end(args); 362 363 /* Send to desired file */ 364 fputs(file, printbuffer); 365 return i; 366 } 367 368 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/ 369 370 int getc(void) 371 { 372 #ifdef CONFIG_DISABLE_CONSOLE 373 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 374 return 0; 375 #endif 376 377 if (!gd->have_console) 378 return 0; 379 380 if (gd->flags & GD_FLG_DEVINIT) { 381 /* Get from the standard input */ 382 return fgetc(stdin); 383 } 384 385 /* Send directly to the handler */ 386 return serial_getc(); 387 } 388 389 int tstc(void) 390 { 391 #ifdef CONFIG_DISABLE_CONSOLE 392 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 393 return 0; 394 #endif 395 396 if (!gd->have_console) 397 return 0; 398 399 if (gd->flags & GD_FLG_DEVINIT) { 400 /* Test the standard input */ 401 return ftstc(stdin); 402 } 403 404 /* Send directly to the handler */ 405 return serial_tstc(); 406 } 407 408 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0 409 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1 410 411 #ifdef CONFIG_PRE_CONSOLE_BUFFER 412 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_PRE_CON_BUF_SZ) 413 414 static void pre_console_putc(const char c) 415 { 416 char *buffer = (char *)CONFIG_PRE_CON_BUF_ADDR; 417 418 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c; 419 } 420 421 static void pre_console_puts(const char *s) 422 { 423 while (*s) 424 pre_console_putc(*s++); 425 } 426 427 static void print_pre_console_buffer(int flushpoint) 428 { 429 unsigned long in = 0, out = 0; 430 char *buf_in = (char *)CONFIG_PRE_CON_BUF_ADDR; 431 char buf_out[CONFIG_PRE_CON_BUF_SZ + 1]; 432 433 if (gd->precon_buf_idx > CONFIG_PRE_CON_BUF_SZ) 434 in = gd->precon_buf_idx - CONFIG_PRE_CON_BUF_SZ; 435 436 while (in < gd->precon_buf_idx) 437 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)]; 438 439 buf_out[out] = 0; 440 441 switch (flushpoint) { 442 case PRE_CONSOLE_FLUSHPOINT1_SERIAL: 443 puts(buf_out); 444 break; 445 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL: 446 console_puts_noserial(stdout, buf_out); 447 break; 448 } 449 } 450 #else 451 static inline void pre_console_putc(const char c) {} 452 static inline void pre_console_puts(const char *s) {} 453 static inline void print_pre_console_buffer(int flushpoint) {} 454 #endif 455 456 void putc(const char c) 457 { 458 #ifdef CONFIG_SANDBOX 459 /* sandbox can send characters to stdout before it has a console */ 460 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 461 os_putc(c); 462 return; 463 } 464 #endif 465 #ifdef CONFIG_DEBUG_UART 466 /* if we don't have a console yet, use the debug UART */ 467 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 468 printch(c); 469 return; 470 } 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 #ifdef CONFIG_SANDBOX 498 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 499 os_puts(s); 500 return; 501 } 502 #endif 503 #ifdef CONFIG_DEBUG_UART 504 if (!gd || !(gd->flags & GD_FLG_SERIAL_READY)) { 505 while (*s) { 506 int ch = *s++; 507 508 printch(ch); 509 if (ch == '\n') 510 printch('\r'); 511 } 512 return; 513 } 514 #endif 515 #ifdef CONFIG_SILENT_CONSOLE 516 if (gd->flags & GD_FLG_SILENT) 517 return; 518 #endif 519 520 #ifdef CONFIG_DISABLE_CONSOLE 521 if (gd->flags & GD_FLG_DISABLE_CONSOLE) 522 return; 523 #endif 524 525 if (!gd->have_console) 526 return pre_console_puts(s); 527 528 if (gd->flags & GD_FLG_DEVINIT) { 529 /* Send to the standard output */ 530 fputs(stdout, s); 531 } else { 532 /* Send directly to the handler */ 533 pre_console_puts(s); 534 serial_puts(s); 535 } 536 } 537 538 int printf(const char *fmt, ...) 539 { 540 va_list args; 541 uint i; 542 char printbuffer[CONFIG_SYS_PBSIZE]; 543 544 va_start(args, fmt); 545 546 /* For this to work, printbuffer must be larger than 547 * anything we ever want to print. 548 */ 549 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 550 va_end(args); 551 552 /* Print the string */ 553 puts(printbuffer); 554 return i; 555 } 556 557 int vprintf(const char *fmt, va_list args) 558 { 559 uint i; 560 char printbuffer[CONFIG_SYS_PBSIZE]; 561 562 #if defined(CONFIG_PRE_CONSOLE_BUFFER) && !defined(CONFIG_SANDBOX) 563 if (!gd->have_console) 564 return 0; 565 #endif 566 567 /* For this to work, printbuffer must be larger than 568 * anything we ever want to print. 569 */ 570 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); 571 572 /* Print the string */ 573 puts(printbuffer); 574 return i; 575 } 576 577 /* test if ctrl-c was pressed */ 578 static int ctrlc_disabled = 0; /* see disable_ctrl() */ 579 static int ctrlc_was_pressed = 0; 580 int ctrlc(void) 581 { 582 #ifndef CONFIG_SANDBOX 583 if (!ctrlc_disabled && gd->have_console) { 584 if (tstc()) { 585 switch (getc()) { 586 case 0x03: /* ^C - Control C */ 587 ctrlc_was_pressed = 1; 588 return 1; 589 default: 590 break; 591 } 592 } 593 } 594 #endif 595 596 return 0; 597 } 598 /* Reads user's confirmation. 599 Returns 1 if user's input is "y", "Y", "yes" or "YES" 600 */ 601 int confirm_yesno(void) 602 { 603 int i; 604 char str_input[5]; 605 606 /* Flush input */ 607 while (tstc()) 608 getc(); 609 i = 0; 610 while (i < sizeof(str_input)) { 611 str_input[i] = getc(); 612 putc(str_input[i]); 613 if (str_input[i] == '\r') 614 break; 615 i++; 616 } 617 putc('\n'); 618 if (strncmp(str_input, "y\r", 2) == 0 || 619 strncmp(str_input, "Y\r", 2) == 0 || 620 strncmp(str_input, "yes\r", 4) == 0 || 621 strncmp(str_input, "YES\r", 4) == 0) 622 return 1; 623 return 0; 624 } 625 /* pass 1 to disable ctrlc() checking, 0 to enable. 626 * returns previous state 627 */ 628 int disable_ctrlc(int disable) 629 { 630 int prev = ctrlc_disabled; /* save previous state */ 631 632 ctrlc_disabled = disable; 633 return prev; 634 } 635 636 int had_ctrlc (void) 637 { 638 return ctrlc_was_pressed; 639 } 640 641 void clear_ctrlc(void) 642 { 643 ctrlc_was_pressed = 0; 644 } 645 646 #ifdef CONFIG_MODEM_SUPPORT_DEBUG 647 char screen[1024]; 648 char *cursor = screen; 649 int once = 0; 650 inline void dbg(const char *fmt, ...) 651 { 652 va_list args; 653 uint i; 654 char printbuffer[CONFIG_SYS_PBSIZE]; 655 656 if (!once) { 657 memset(screen, 0, sizeof(screen)); 658 once++; 659 } 660 661 va_start(args, fmt); 662 663 /* For this to work, printbuffer must be larger than 664 * anything we ever want to print. 665 */ 666 i = vsnprintf(printbuffer, sizeof(printbuffer), fmt, args); 667 va_end(args); 668 669 if ((screen + sizeof(screen) - 1 - cursor) 670 < strlen(printbuffer) + 1) { 671 memset(screen, 0, sizeof(screen)); 672 cursor = screen; 673 } 674 sprintf(cursor, printbuffer); 675 cursor += strlen(printbuffer); 676 677 } 678 #else 679 static inline void dbg(const char *fmt, ...) 680 { 681 } 682 #endif 683 684 /** U-Boot INIT FUNCTIONS *************************************************/ 685 686 struct stdio_dev *search_device(int flags, const char *name) 687 { 688 struct stdio_dev *dev; 689 690 dev = stdio_get_by_name(name); 691 692 if (dev && (dev->flags & flags)) 693 return dev; 694 695 return NULL; 696 } 697 698 int console_assign(int file, const char *devname) 699 { 700 int flag; 701 struct stdio_dev *dev; 702 703 /* Check for valid file */ 704 switch (file) { 705 case stdin: 706 flag = DEV_FLAGS_INPUT; 707 break; 708 case stdout: 709 case stderr: 710 flag = DEV_FLAGS_OUTPUT; 711 break; 712 default: 713 return -1; 714 } 715 716 /* Check for valid device name */ 717 718 dev = search_device(flag, devname); 719 720 if (dev) 721 return console_setfile(file, dev); 722 723 return -1; 724 } 725 726 /* Called before relocation - use serial functions */ 727 int console_init_f(void) 728 { 729 gd->have_console = 1; 730 731 #ifdef CONFIG_SILENT_CONSOLE 732 if (getenv("silent") != NULL) 733 gd->flags |= GD_FLG_SILENT; 734 #endif 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 #ifdef CONFIG_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 #ifdef CONFIG_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 = getenv("stdin"); 789 stdoutname = getenv("stdout"); 790 stderrname = getenv("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 #ifdef CONFIG_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 #ifdef CONFIG_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 */ 836 837 #ifdef CONFIG_SYS_CONSOLE_ENV_OVERWRITE 838 /* set the environment variables (will overwrite previous env settings) */ 839 for (i = 0; i < 3; i++) { 840 setenv(stdio_names[i], stdio_devices[i]->name); 841 } 842 #endif /* CONFIG_SYS_CONSOLE_ENV_OVERWRITE */ 843 844 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 845 846 #if 0 847 /* If nothing usable installed, use only the initial console */ 848 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 849 return 0; 850 #endif 851 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 852 return 0; 853 } 854 855 #else /* CONFIG_SYS_CONSOLE_IS_IN_ENV */ 856 857 /* Called after the relocation - use desired console functions */ 858 int console_init_r(void) 859 { 860 struct stdio_dev *inputdev = NULL, *outputdev = NULL; 861 int i; 862 struct list_head *list = stdio_get_list(); 863 struct list_head *pos; 864 struct stdio_dev *dev; 865 866 #ifdef CONFIG_SPLASH_SCREEN 867 /* 868 * suppress all output if splash screen is enabled and we have 869 * a bmp to display. We redirect the output from frame buffer 870 * console to serial console in this case or suppress it if 871 * "silent" mode was requested. 872 */ 873 if (getenv("splashimage") != NULL) { 874 if (!(gd->flags & GD_FLG_SILENT)) 875 outputdev = search_device (DEV_FLAGS_OUTPUT, "serial"); 876 } 877 #endif 878 879 /* Scan devices looking for input and output devices */ 880 list_for_each(pos, list) { 881 dev = list_entry(pos, struct stdio_dev, list); 882 883 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) { 884 inputdev = dev; 885 } 886 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) { 887 outputdev = dev; 888 } 889 if(inputdev && outputdev) 890 break; 891 } 892 893 /* Initializes output console first */ 894 if (outputdev != NULL) { 895 console_setfile(stdout, outputdev); 896 console_setfile(stderr, outputdev); 897 #ifdef CONFIG_CONSOLE_MUX 898 console_devices[stdout][0] = outputdev; 899 console_devices[stderr][0] = outputdev; 900 #endif 901 } 902 903 /* Initializes input console */ 904 if (inputdev != NULL) { 905 console_setfile(stdin, inputdev); 906 #ifdef CONFIG_CONSOLE_MUX 907 console_devices[stdin][0] = inputdev; 908 #endif 909 } 910 911 #ifndef CONFIG_SYS_CONSOLE_INFO_QUIET 912 stdio_print_current_devices(); 913 #endif /* CONFIG_SYS_CONSOLE_INFO_QUIET */ 914 915 /* Setting environment variables */ 916 for (i = 0; i < 3; i++) { 917 setenv(stdio_names[i], stdio_devices[i]->name); 918 } 919 920 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */ 921 922 #if 0 923 /* If nothing usable installed, use only the initial console */ 924 if ((stdio_devices[stdin] == NULL) && (stdio_devices[stdout] == NULL)) 925 return 0; 926 #endif 927 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL); 928 return 0; 929 } 930 931 #endif /* CONFIG_SYS_CONSOLE_IS_IN_ENV */ 932