1 // SPDX-License-Identifier: GPL-2.0+
7 #define LOG_CATEGORY LOGC_CONSOLE
10 #include <debug_uart.h>
11 #include <display_options.h>
20 #include <stdio_dev.h>
22 #include <env_internal.h>
23 #include <video_console.h>
25 #include <asm/global_data.h>
26 #include <linux/delay.h>
28 DECLARE_GLOBAL_DATA_PTR;
32 static int on_console(const char *name, const char *value, enum env_op op,
37 /* Check for console redirection */
38 if (strcmp(name, "stdin") == 0)
40 else if (strcmp(name, "stdout") == 0)
42 else if (strcmp(name, "stderr") == 0)
45 /* if not actually setting a console variable, we don't care */
46 if (console == -1 || (gd->flags & GD_FLG_DEVINIT) == 0)
51 case env_op_overwrite:
53 if (CONFIG_IS_ENABLED(CONSOLE_MUX)) {
54 if (iomux_doenv(console, value))
57 /* Try assigning specified device */
58 if (console_assign(console, value) < 0)
65 if ((flags & H_FORCE) == 0)
66 printf("Can't delete \"%s\"\n", name);
73 U_BOOT_ENV_CALLBACK(console, on_console);
75 #ifdef CONFIG_SILENT_CONSOLE
76 static int on_silent(const char *name, const char *value, enum env_op op,
79 if (!CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_SET))
80 if (flags & H_INTERACTIVE)
83 if (!CONFIG_IS_ENABLED(SILENT_CONSOLE_UPDATE_ON_RELOC))
84 if ((flags & H_INTERACTIVE) == 0)
88 gd->flags |= GD_FLG_SILENT;
90 gd->flags &= ~GD_FLG_SILENT;
94 U_BOOT_ENV_CALLBACK(silent, on_silent);
97 #ifdef CONFIG_CONSOLE_RECORD
98 /* helper function: access to gd->console_out and gd->console_in */
99 static void console_record_putc(const char c)
101 if (!(gd->flags & GD_FLG_RECORD))
103 if (gd->console_out.start &&
104 !membuff_putbyte((struct membuff *)&gd->console_out, c))
105 gd->flags |= GD_FLG_RECORD_OVF;
108 static void console_record_puts(const char *s)
110 if (!(gd->flags & GD_FLG_RECORD))
112 if (gd->console_out.start) {
115 if (membuff_put((struct membuff *)&gd->console_out, s, len) !=
117 gd->flags |= GD_FLG_RECORD_OVF;
121 static int console_record_getc(void)
123 if (!(gd->flags & GD_FLG_RECORD))
125 if (!gd->console_in.start)
128 return membuff_getbyte((struct membuff *)&gd->console_in);
131 static int console_record_tstc(void)
133 if (!(gd->flags & GD_FLG_RECORD))
135 if (gd->console_in.start) {
136 if (membuff_peekbyte((struct membuff *)&gd->console_in) != -1)
142 static void console_record_putc(char c)
146 static void console_record_puts(const char *s)
150 static int console_record_getc(void)
155 static int console_record_tstc(void)
161 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
163 * if overwrite_console returns 1, the stdin, stderr and stdout
164 * are switched to the serial port, else the settings in the
165 * environment are used
167 #ifdef CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
168 extern int overwrite_console(void);
169 #define OVERWRITE_CONSOLE overwrite_console()
171 #define OVERWRITE_CONSOLE 0
172 #endif /* CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE */
174 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
176 static int console_setfile(int file, struct stdio_dev * dev)
187 error = console_start(file, dev);
191 /* Assign the new device (leaving the existing one started) */
192 stdio_devices[file] = dev;
194 #ifndef CONFIG_XPL_BUILD
196 * Update monitor functions
197 * (to use the console stuff by other applications)
201 gd->jt->getc = getchar;
207 STDIO_DEV_ASSIGN_FLUSH(gd->jt, flush);
208 gd->jt->printf = printf;
213 default: /* Invalid file ID */
220 * console_dev_is_serial() - Check if a stdio device is a serial device
222 * @sdev: Device to check
223 * Return: true if this device is in the serial uclass (or for pre-driver-model,
224 * whether it is called "serial".
226 static bool console_dev_is_serial(struct stdio_dev *sdev)
230 if (IS_ENABLED(CONFIG_DM_SERIAL) && (sdev->flags & DEV_FLAGS_DM)) {
231 struct udevice *dev = sdev->priv;
233 is_serial = device_get_uclass_id(dev) == UCLASS_SERIAL;
235 is_serial = !strcmp(sdev->name, "serial");
241 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
242 /** Console I/O multiplexing *******************************************/
244 /* tstcdev: save the last stdio device with pending characters, with tstc != 0 */
245 static struct stdio_dev *tstcdev;
246 struct stdio_dev **console_devices[MAX_FILES];
247 int cd_count[MAX_FILES];
249 static void console_devices_set(int file, struct stdio_dev *dev)
251 console_devices[file][0] = dev;
256 * console_needs_start_stop() - check if we need to start or stop the STDIO device
258 * @sdev: STDIO device in question
260 * This function checks if we need to start or stop the stdio device used for
261 * a console. For IOMUX case it simply enforces one time start and one time
262 * stop of the device independently of how many STDIO files are using it. In
263 * other words, we start console once before first STDIO device wants it and
264 * stop after the last is gone.
266 static bool console_needs_start_stop(int file, struct stdio_dev *sdev)
270 for (i = 0; i < ARRAY_SIZE(cd_count); i++) {
274 if (iomux_match_device(console_devices[i], cd_count[i], sdev) >= 0)
281 * This depends on tstc() always being called before getchar().
282 * This is guaranteed to be true because this routine is called
283 * only from fgetc() which assures it.
284 * No attempt is made to demultiplex multiple input sources.
286 static int console_getc(int file)
290 /* This is never called with testcdev == NULL */
291 ret = tstcdev->getc(tstcdev);
296 /* Upper layer may have already called tstc(): check the saved result */
297 static bool console_has_tstc(void)
302 static int console_tstc(int file)
305 struct stdio_dev *dev;
308 prev = disable_ctrlc(1);
309 for_each_console_dev(i, file, dev) {
310 if (dev->tstc != NULL) {
311 ret = dev->tstc(dev);
324 static void console_putc(int file, const char c)
327 struct stdio_dev *dev;
329 for_each_console_dev(i, file, dev) {
330 if (dev->putc != NULL)
336 * console_puts_select() - Output a string to all console devices
338 * @file: File number to output to (e,g, stdout, see stdio.h)
339 * @serial_only: true to output only to serial, false to output to everything
341 * @s: String to output
343 static void console_puts_select(int file, bool serial_only, const char *s)
346 struct stdio_dev *dev;
348 for_each_console_dev(i, file, dev) {
349 bool is_serial = console_dev_is_serial(dev);
351 if (dev->puts && serial_only == is_serial)
356 void console_puts_select_stderr(bool serial_only, const char *s)
358 if (gd->flags & GD_FLG_DEVINIT)
359 console_puts_select(stderr, serial_only, s);
362 static void console_puts(int file, const char *s)
365 struct stdio_dev *dev;
367 for_each_console_dev(i, file, dev) {
368 if (dev->puts != NULL)
373 #ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
374 static void console_flush(int file)
377 struct stdio_dev *dev;
379 for_each_console_dev(i, file, dev) {
380 if (dev->flush != NULL)
386 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
387 static inline void console_doenv(int file, struct stdio_dev *dev)
389 iomux_doenv(file, dev->name);
394 static void console_devices_set(int file, struct stdio_dev *dev)
398 static inline bool console_needs_start_stop(int file, struct stdio_dev *sdev)
403 static inline int console_getc(int file)
405 return stdio_devices[file]->getc(stdio_devices[file]);
408 static bool console_has_tstc(void)
413 static inline int console_tstc(int file)
415 return stdio_devices[file]->tstc(stdio_devices[file]);
418 static inline void console_putc(int file, const char c)
420 stdio_devices[file]->putc(stdio_devices[file], c);
423 void console_puts_select(int file, bool serial_only, const char *s)
425 if ((gd->flags & GD_FLG_DEVINIT) &&
426 serial_only == console_dev_is_serial(stdio_devices[file]))
427 stdio_devices[file]->puts(stdio_devices[file], s);
430 static inline void console_puts(int file, const char *s)
432 stdio_devices[file]->puts(stdio_devices[file], s);
435 #ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
436 static inline void console_flush(int file)
438 if (stdio_devices[file]->flush)
439 stdio_devices[file]->flush(stdio_devices[file]);
443 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
444 static inline void console_doenv(int file, struct stdio_dev *dev)
446 console_setfile(file, dev);
449 #endif /* CONIFIG_IS_ENABLED(CONSOLE_MUX) */
451 static void __maybe_unused console_setfile_and_devices(int file, struct stdio_dev *dev)
453 console_setfile(file, dev);
454 console_devices_set(file, dev);
457 int console_start(int file, struct stdio_dev *sdev)
461 if (!console_needs_start_stop(file, sdev))
464 /* Start new device */
466 error = sdev->start(sdev);
467 /* If it's not started don't use it */
474 void console_stop(int file, struct stdio_dev *sdev)
476 if (!console_needs_start_stop(file, sdev))
483 /** U-Boot INITIAL CONSOLE-NOT COMPATIBLE FUNCTIONS *************************/
485 int serial_printf(const char *fmt, ...)
489 char printbuffer[CONFIG_SYS_PBSIZE];
493 /* For this to work, printbuffer must be larger than
494 * anything we ever want to print.
496 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
499 serial_puts(printbuffer);
505 if ((unsigned int)file < MAX_FILES) {
507 * Effectively poll for input wherever it may be available.
511 if (CONFIG_IS_ENABLED(CONSOLE_MUX)) {
513 * Upper layer may have already called tstc() so
514 * check for that first.
516 if (console_has_tstc())
517 return console_getc(file);
520 if (console_tstc(file))
521 return console_getc(file);
525 * If the watchdog must be rate-limited then it should
526 * already be handled in board-specific code.
528 if (IS_ENABLED(CONFIG_WATCHDOG))
538 if ((unsigned int)file < MAX_FILES)
539 return console_tstc(file);
544 void fputc(int file, const char c)
546 if ((unsigned int)file < MAX_FILES)
547 console_putc(file, c);
550 void fputs(int file, const char *s)
552 if ((unsigned int)file < MAX_FILES)
553 console_puts(file, s);
556 #ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
557 void fflush(int file)
559 if ((unsigned int)file < MAX_FILES)
564 int fprintf(int file, const char *fmt, ...)
568 char printbuffer[CONFIG_SYS_PBSIZE];
572 /* For this to work, printbuffer must be larger than
573 * anything we ever want to print.
575 i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
578 /* Send to desired file */
579 fputs(file, printbuffer);
583 /** U-Boot INITIAL CONSOLE-COMPATIBLE FUNCTION *****************************/
589 if (IS_ENABLED(CONFIG_DISABLE_CONSOLE) && (gd->flags & GD_FLG_DISABLE_CONSOLE))
592 if (!(gd->flags & GD_FLG_HAVE_CONSOLE))
595 ch = console_record_getc();
599 if (gd->flags & GD_FLG_DEVINIT) {
600 /* Get from the standard input */
604 /* Send directly to the handler */
605 return serial_getc();
610 if (IS_ENABLED(CONFIG_DISABLE_CONSOLE) && (gd->flags & GD_FLG_DISABLE_CONSOLE))
613 if (!(gd->flags & GD_FLG_HAVE_CONSOLE))
616 if (console_record_tstc())
619 if (gd->flags & GD_FLG_DEVINIT) {
620 /* Test the standard input */
624 /* Send directly to the handler */
625 return serial_tstc();
628 #define PRE_CONSOLE_FLUSHPOINT1_SERIAL 0
629 #define PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL 1
631 #if CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
632 #define CIRC_BUF_IDX(idx) ((idx) % (unsigned long)CONFIG_VAL(PRE_CON_BUF_SZ))
634 static void pre_console_putc(const char c)
638 if (gd->precon_buf_idx < 0)
641 buffer = map_sysmem(CONFIG_VAL(PRE_CON_BUF_ADDR), CONFIG_VAL(PRE_CON_BUF_SZ));
643 buffer[CIRC_BUF_IDX(gd->precon_buf_idx++)] = c;
645 unmap_sysmem(buffer);
648 static void pre_console_puts(const char *s)
650 if (gd->precon_buf_idx < 0)
654 pre_console_putc(*s++);
657 static void print_pre_console_buffer(int flushpoint)
659 long in = 0, out = 0;
660 char buf_out[CONFIG_VAL(PRE_CON_BUF_SZ) + 1];
663 if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && (gd->flags & GD_FLG_SILENT))
666 buf_in = map_sysmem(CONFIG_VAL(PRE_CON_BUF_ADDR), CONFIG_VAL(PRE_CON_BUF_SZ));
667 if (gd->precon_buf_idx > CONFIG_VAL(PRE_CON_BUF_SZ))
668 in = gd->precon_buf_idx - CONFIG_VAL(PRE_CON_BUF_SZ);
670 while (in < gd->precon_buf_idx)
671 buf_out[out++] = buf_in[CIRC_BUF_IDX(in++)];
672 unmap_sysmem(buf_in);
676 gd->precon_buf_idx = -1;
677 switch (flushpoint) {
678 case PRE_CONSOLE_FLUSHPOINT1_SERIAL:
681 case PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL:
682 console_puts_select(stdout, false, buf_out);
685 gd->precon_buf_idx = in;
688 static inline void pre_console_putc(const char c) {}
689 static inline void pre_console_puts(const char *s) {}
690 static inline void print_pre_console_buffer(int flushpoint) {}
693 void putc(const char c)
698 console_record_putc(c);
700 /* sandbox can send characters to stdout before it has a console */
701 if (IS_ENABLED(CONFIG_SANDBOX) && !(gd->flags & GD_FLG_SERIAL_READY)) {
706 /* if we don't have a console yet, use the debug UART */
707 if (IS_ENABLED(CONFIG_DEBUG_UART) && !(gd->flags & GD_FLG_SERIAL_READY)) {
712 if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && (gd->flags & GD_FLG_SILENT)) {
713 if (!(gd->flags & GD_FLG_DEVINIT))
718 if (IS_ENABLED(CONFIG_DISABLE_CONSOLE) && (gd->flags & GD_FLG_DISABLE_CONSOLE))
721 if (!(gd->flags & GD_FLG_HAVE_CONSOLE))
722 return pre_console_putc(c);
724 if (gd->flags & GD_FLG_DEVINIT) {
725 /* Send to the standard output */
728 /* Send directly to the handler */
734 void puts(const char *s)
739 console_record_puts(s);
741 /* sandbox can send characters to stdout before it has a console */
742 if (IS_ENABLED(CONFIG_SANDBOX) && !(gd->flags & GD_FLG_SERIAL_READY)) {
747 if (IS_ENABLED(CONFIG_DEBUG_UART) && !(gd->flags & GD_FLG_SERIAL_READY)) {
752 if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && (gd->flags & GD_FLG_SILENT)) {
753 if (!(gd->flags & GD_FLG_DEVINIT))
758 if (IS_ENABLED(CONFIG_DISABLE_CONSOLE) && (gd->flags & GD_FLG_DISABLE_CONSOLE))
761 if (!(gd->flags & GD_FLG_HAVE_CONSOLE))
762 return pre_console_puts(s);
764 if (gd->flags & GD_FLG_DEVINIT) {
765 /* Send to the standard output */
768 /* Send directly to the handler */
774 #ifdef CONFIG_CONSOLE_FLUSH_SUPPORT
780 /* sandbox can send characters to stdout before it has a console */
781 if (IS_ENABLED(CONFIG_SANDBOX) && !(gd->flags & GD_FLG_SERIAL_READY)) {
786 if (IS_ENABLED(CONFIG_DEBUG_UART) && !(gd->flags & GD_FLG_SERIAL_READY))
789 if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && (gd->flags & GD_FLG_SILENT))
792 if (IS_ENABLED(CONFIG_DISABLE_CONSOLE) && (gd->flags & GD_FLG_DISABLE_CONSOLE))
795 if (!(gd->flags & GD_FLG_HAVE_CONSOLE))
798 if (gd->flags & GD_FLG_DEVINIT) {
799 /* Send to the standard output */
802 /* Send directly to the handler */
808 #ifdef CONFIG_CONSOLE_RECORD
809 int console_record_init(void)
813 ret = membuff_new((struct membuff *)&gd->console_out,
814 gd->flags & GD_FLG_RELOC ?
815 CONFIG_CONSOLE_RECORD_OUT_SIZE :
816 CONFIG_CONSOLE_RECORD_OUT_SIZE_F);
819 ret = membuff_new((struct membuff *)&gd->console_in,
820 CONFIG_CONSOLE_RECORD_IN_SIZE);
822 /* Start recording from the beginning */
823 gd->flags |= GD_FLG_RECORD;
828 void console_record_reset(void)
830 membuff_purge((struct membuff *)&gd->console_out);
831 membuff_purge((struct membuff *)&gd->console_in);
832 gd->flags &= ~GD_FLG_RECORD_OVF;
835 int console_record_reset_enable(void)
837 console_record_reset();
838 gd->flags |= GD_FLG_RECORD;
843 int console_record_readline(char *str, int maxlen)
845 if (gd->flags & GD_FLG_RECORD_OVF)
847 if (console_record_isempty())
850 return membuff_readline((struct membuff *)&gd->console_out, str,
851 maxlen, '\0', false);
854 int console_record_avail(void)
856 return membuff_avail((struct membuff *)&gd->console_out);
859 bool console_record_isempty(void)
861 return membuff_isempty((struct membuff *)&gd->console_out);
864 int console_in_puts(const char *str)
866 return membuff_put((struct membuff *)&gd->console_in, str, strlen(str));
871 /* test if ctrl-c was pressed */
872 static int ctrlc_disabled = 0; /* see disable_ctrl() */
873 static int ctrlc_was_pressed = 0;
876 if (!ctrlc_disabled && (gd->flags & GD_FLG_HAVE_CONSOLE)) {
879 case 0x03: /* ^C - Control C */
880 ctrlc_was_pressed = 1;
890 /* Reads user's confirmation.
891 Returns 1 if user's input is "y", "Y", "yes" or "YES"
893 int confirm_yesno(void)
902 while (i < sizeof(str_input)) {
903 str_input[i] = getchar();
905 if (str_input[i] == '\r')
910 if (strncmp(str_input, "y\r", 2) == 0 ||
911 strncmp(str_input, "Y\r", 2) == 0 ||
912 strncmp(str_input, "yes\r", 4) == 0 ||
913 strncmp(str_input, "YES\r", 4) == 0)
917 /* pass 1 to disable ctrlc() checking, 0 to enable.
918 * returns previous state
920 int disable_ctrlc(int disable)
922 int prev = ctrlc_disabled; /* save previous state */
924 ctrlc_disabled = disable;
930 return ctrlc_was_pressed;
933 void clear_ctrlc(void)
935 ctrlc_was_pressed = 0;
938 /** U-Boot INIT FUNCTIONS *************************************************/
940 struct stdio_dev *console_search_dev(int flags, const char *name)
942 struct stdio_dev *dev;
944 dev = stdio_get_by_name(name);
945 #ifdef CONFIG_VIDCONSOLE_AS_LCD
946 if (!dev && !strcmp(name, CONFIG_VIDCONSOLE_AS_NAME))
947 dev = stdio_get_by_name("vidconsole");
950 if (dev && (dev->flags & flags))
956 int console_assign(int file, const char *devname)
959 struct stdio_dev *dev;
961 /* Check for valid file */
962 flag = stdio_file_to_flags(file);
966 /* Check for valid device name */
968 dev = console_search_dev(flag, devname);
971 return console_setfile(file, dev);
976 /* return true if the 'silent' flag is removed */
977 static bool console_update_silent(void)
979 unsigned long flags = gd->flags;
981 if (!IS_ENABLED(CONFIG_SILENT_CONSOLE))
984 if (IS_ENABLED(CONFIG_SILENT_CONSOLE_UNTIL_ENV) && !(gd->flags & GD_FLG_ENV_READY)) {
985 gd->flags |= GD_FLG_SILENT;
989 if (env_get("silent")) {
990 gd->flags |= GD_FLG_SILENT;
994 gd->flags &= ~GD_FLG_SILENT;
996 return !!(flags & GD_FLG_SILENT);
999 int console_announce_r(void)
1001 #if !CONFIG_IS_ENABLED(PRE_CONSOLE_BUFFER)
1002 char buf[DISPLAY_OPTIONS_BANNER_LENGTH];
1004 display_options_get_banner(false, buf, sizeof(buf));
1006 console_puts_select(stdout, false, buf);
1012 /* Called before relocation - use serial functions */
1013 int console_init_f(void)
1015 gd->flags |= GD_FLG_HAVE_CONSOLE;
1017 console_update_silent();
1019 print_pre_console_buffer(PRE_CONSOLE_FLUSHPOINT1_SERIAL);
1024 int console_clear(void)
1027 * Send clear screen and home
1030 * through an API and only be written to serial terminals, not video
1033 printf(CSI "2J" CSI "1;1H");
1034 if (IS_ENABLED(CONFIG_VIDEO_ANSI))
1037 if (IS_ENABLED(CONFIG_VIDEO)) {
1038 struct udevice *dev;
1041 ret = uclass_first_device_err(UCLASS_VIDEO_CONSOLE, &dev);
1044 ret = vidconsole_clear_and_reset(dev);
1052 static char *get_stdio(const u8 std)
1054 return stdio_devices[std] ? stdio_devices[std]->name : "No devices available!";
1057 static void stdio_print_current_devices(void)
1059 char *stdinname = NULL;
1060 char *stdoutname = NULL;
1061 char *stderrname = NULL;
1063 if (CONFIG_IS_ENABLED(CONSOLE_MUX) &&
1064 CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)) {
1065 /* stdin stdout and stderr are in environment */
1066 stdinname = env_get("stdin");
1067 stdoutname = env_get("stdout");
1068 stderrname = env_get("stderr");
1071 stdinname = stdinname ? : get_stdio(stdin);
1072 stdoutname = stdoutname ? : get_stdio(stdout);
1073 stderrname = stderrname ? : get_stdio(stderr);
1075 /* Print information */
1077 printf("%s\n", stdinname);
1080 printf("%s\n", stdoutname);
1083 printf("%s\n", stderrname);
1086 #if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)
1087 /* Called after the relocation - use desired console functions */
1088 int console_init_r(void)
1090 char *stdinname, *stdoutname, *stderrname;
1091 struct stdio_dev *inputdev = NULL, *outputdev = NULL, *errdev = NULL;
1096 /* update silent for env loaded from flash (initr_env) */
1097 if (console_update_silent())
1098 flushpoint = PRE_CONSOLE_FLUSHPOINT1_SERIAL;
1100 flushpoint = PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL;
1102 /* set default handlers at first */
1103 gd->jt->getc = serial_getc;
1104 gd->jt->tstc = serial_tstc;
1105 gd->jt->putc = serial_putc;
1106 gd->jt->puts = serial_puts;
1107 gd->jt->printf = serial_printf;
1109 /* stdin stdout and stderr are in environment */
1111 stdinname = env_get("stdin");
1112 stdoutname = env_get("stdout");
1113 stderrname = env_get("stderr");
1115 if (OVERWRITE_CONSOLE == 0) { /* if not overwritten by config switch */
1116 inputdev = console_search_dev(DEV_FLAGS_INPUT, stdinname);
1117 outputdev = console_search_dev(DEV_FLAGS_OUTPUT, stdoutname);
1118 errdev = console_search_dev(DEV_FLAGS_OUTPUT, stderrname);
1119 if (CONFIG_IS_ENABLED(CONSOLE_MUX)) {
1120 iomux_err = iomux_doenv(stdin, stdinname);
1121 iomux_err += iomux_doenv(stdout, stdoutname);
1122 iomux_err += iomux_doenv(stderr, stderrname);
1124 /* Successful, so skip all the code below. */
1128 /* if the devices are overwritten or not found, use default device */
1129 if (inputdev == NULL) {
1130 inputdev = console_search_dev(DEV_FLAGS_INPUT, "serial");
1132 if (outputdev == NULL) {
1133 outputdev = console_search_dev(DEV_FLAGS_OUTPUT, "serial");
1135 if (errdev == NULL) {
1136 errdev = console_search_dev(DEV_FLAGS_OUTPUT, "serial");
1138 /* Initializes output console first */
1139 if (outputdev != NULL) {
1140 /* need to set a console if not done above. */
1141 console_doenv(stdout, outputdev);
1143 if (errdev != NULL) {
1144 /* need to set a console if not done above. */
1145 console_doenv(stderr, errdev);
1147 if (inputdev != NULL) {
1148 /* need to set a console if not done above. */
1149 console_doenv(stdin, inputdev);
1154 if (!IS_ENABLED(CONFIG_SYS_CONSOLE_INFO_QUIET))
1155 stdio_print_current_devices();
1157 #ifdef CONFIG_VIDCONSOLE_AS_LCD
1158 if (strstr(stdoutname, CONFIG_VIDCONSOLE_AS_NAME))
1159 printf("Warning: Please change '%s' to 'vidconsole' in stdout/stderr environment vars\n",
1160 CONFIG_VIDCONSOLE_AS_NAME);
1163 if (IS_ENABLED(CONFIG_SYS_CONSOLE_ENV_OVERWRITE)) {
1164 /* set the environment variables (will overwrite previous env settings) */
1165 for (i = 0; i < MAX_FILES; i++)
1166 env_set(stdio_names[i], stdio_devices[i]->name);
1169 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
1171 print_pre_console_buffer(flushpoint);
1175 #else /* !CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
1177 /* Called after the relocation - use desired console functions */
1178 int console_init_r(void)
1180 struct stdio_dev *inputdev = NULL, *outputdev = NULL;
1182 struct list_head *list = stdio_get_list();
1183 struct list_head *pos;
1184 struct stdio_dev *dev;
1187 /* update silent for env loaded from flash (initr_env) */
1188 if (console_update_silent())
1189 flushpoint = PRE_CONSOLE_FLUSHPOINT1_SERIAL;
1191 flushpoint = PRE_CONSOLE_FLUSHPOINT2_EVERYTHING_BUT_SERIAL;
1194 * suppress all output if splash screen is enabled and we have
1195 * a bmp to display. We redirect the output from frame buffer
1196 * console to serial console in this case or suppress it if
1197 * "silent" mode was requested.
1199 if (IS_ENABLED(CONFIG_SPLASH_SCREEN) && env_get("splashimage")) {
1200 if (!(gd->flags & GD_FLG_SILENT))
1201 outputdev = console_search_dev (DEV_FLAGS_OUTPUT, "serial");
1204 /* Scan devices looking for input and output devices */
1205 list_for_each(pos, list) {
1206 dev = list_entry(pos, struct stdio_dev, list);
1208 if ((dev->flags & DEV_FLAGS_INPUT) && (inputdev == NULL)) {
1211 if ((dev->flags & DEV_FLAGS_OUTPUT) && (outputdev == NULL)) {
1214 if(inputdev && outputdev)
1218 /* Initializes output console first */
1219 if (outputdev != NULL) {
1220 console_setfile_and_devices(stdout, outputdev);
1221 console_setfile_and_devices(stderr, outputdev);
1224 /* Initializes input console */
1225 if (inputdev != NULL)
1226 console_setfile_and_devices(stdin, inputdev);
1228 if (!IS_ENABLED(CONFIG_SYS_CONSOLE_INFO_QUIET))
1229 stdio_print_current_devices();
1231 /* Setting environment variables */
1232 for (i = 0; i < MAX_FILES; i++) {
1233 env_set(stdio_names[i], stdio_devices[i]->name);
1236 gd->flags |= GD_FLG_DEVINIT; /* device initialization completed */
1238 print_pre_console_buffer(flushpoint);
1242 #endif /* CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV) */
1244 int console_remove_by_name(const char *name)
1248 #if CONFIG_IS_ENABLED(CONSOLE_MUX)
1251 log_debug("removing console device %s\n", name);
1252 for (fnum = 0; fnum < MAX_FILES; fnum++) {
1253 struct stdio_dev **src, **dest;
1256 log_debug("file %d: %d devices: ", fnum, cd_count[fnum]);
1257 src = console_devices[fnum];
1259 for (i = 0; i < cd_count[fnum]; i++, src++) {
1260 struct stdio_dev *sdev = *src;
1263 if (!strcmp(sdev->name, name))
1264 ret = stdio_deregister_dev(sdev, true);
1270 cd_count[fnum] = dest - console_devices[fnum];
1271 log_debug("now %d\n", cd_count[fnum]);
1273 #endif /* CONSOLE_MUX */