1 // SPDX-License-Identifier: GPL-2.0+
3 * EFI application console interface
5 * Copyright (c) 2016 Alexander Graf
10 #include <dm/device.h>
11 #include <efi_loader.h>
12 #include <stdio_dev.h>
13 #include <video_console.h>
15 #define EFI_COUT_MODE_2 2
16 #define EFI_MAX_COUT_MODE 3
19 unsigned long columns;
24 static struct cout_mode efi_cout_modes[] = {
25 /* EFI Mode 0 is 80x25 and always present */
31 /* EFI Mode 1 is always 80x50 */
37 /* Value are unknown until we query the console */
45 const efi_guid_t efi_guid_text_input_ex_protocol =
46 EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID;
47 const efi_guid_t efi_guid_text_input_protocol =
48 EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID;
49 const efi_guid_t efi_guid_text_output_protocol =
50 EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID;
55 /* Default to mode 0 */
56 static struct simple_text_output_mode efi_con_mode = {
65 static int term_get_char(s32 *c)
69 /* Wait up to 100 ms for a character */
70 timeout = timer_get_us() + 100000;
73 if (timer_get_us() > timeout)
81 * Receive and parse a reply from the terminal.
83 * @n: array of return values
84 * @num: number of return values expected
85 * @end_char: character indicating end of terminal message
86 * @return: non-zero indicates error
88 static int term_read_reply(int *n, int num, char end_char)
93 if (term_get_char(&c) || c != cESC)
96 if (term_get_char(&c) || c != '[')
101 if (!term_get_char(&c)) {
108 } else if (c == end_char) {
110 } else if (c > '9' || c < '0') {
114 /* Read one more decimal position */
127 static efi_status_t EFIAPI efi_cout_output_string(
128 struct efi_simple_text_output_protocol *this,
129 const efi_string_t string)
131 struct simple_text_output_mode *con = &efi_con_mode;
132 struct cout_mode *mode = &efi_cout_modes[con->mode];
135 efi_status_t ret = EFI_SUCCESS;
137 EFI_ENTRY("%p, %p", this, string);
139 if (!this || !string) {
140 ret = EFI_INVALID_PARAMETER;
144 buf = malloc(utf16_utf8_strlen(string) + 1);
146 ret = EFI_OUT_OF_RESOURCES;
150 utf16_utf8_strcpy(&pos, string);
155 * Update the cursor position.
157 * The UEFI spec provides advance rules for U+0000, U+0008, U+000A,
158 * and U000D. All other characters, including control characters
159 * U+0007 (BEL) and U+0009 (TAB), have to increase the column by one.
161 for (p = string; *p; ++p) {
163 case '\b': /* U+0008, backspace */
164 con->cursor_column = max(0, con->cursor_column - 1);
166 case '\n': /* U+000A, newline */
167 con->cursor_column = 0;
170 case '\r': /* U+000D, carriage-return */
171 con->cursor_column = 0;
173 case 0xd800 ... 0xdbff:
175 * Ignore high surrogates, we do not want to count a
176 * Unicode character twice.
180 con->cursor_column++;
183 if (con->cursor_column >= mode->columns) {
184 con->cursor_column = 0;
187 con->cursor_row = min(con->cursor_row, (s32)mode->rows - 1);
191 return EFI_EXIT(ret);
194 static efi_status_t EFIAPI efi_cout_test_string(
195 struct efi_simple_text_output_protocol *this,
196 const efi_string_t string)
198 EFI_ENTRY("%p, %p", this, string);
199 return EFI_EXIT(EFI_SUCCESS);
202 static bool cout_mode_matches(struct cout_mode *mode, int rows, int cols)
207 return (mode->rows == rows) && (mode->columns == cols);
211 * query_console_serial() - query console size
213 * @rows pointer to return number of rows
214 * @columns pointer to return number of columns
215 * Returns 0 on success
217 static int query_console_serial(int *rows, int *cols)
222 /* Empty input buffer */
227 * Not all terminals understand CSI [18t for querying the console size.
228 * We should adhere to escape sequences documented in the console_codes
229 * man page and the ECMA-48 standard.
231 * So here we follow a different approach. We position the cursor to the
232 * bottom right and query its position. Before leaving the function we
233 * restore the original cursor position.
235 printf(ESC "7" /* Save cursor position */
236 ESC "[r" /* Set scrolling region to full window */
237 ESC "[999;999H" /* Move to bottom right corner */
238 ESC "[6n"); /* Query cursor position */
240 /* Read {rows,cols} */
241 if (term_read_reply(n, 2, 'R')) {
249 printf(ESC "8"); /* Restore cursor position */
254 * Update the mode table.
256 * By default the only mode available is 80x25. If the console has at least 50
257 * lines, enable mode 80x50. If we can query the console size and it is neither
258 * 80x25 nor 80x50, set it as an additional mode.
260 static void query_console_size(void)
262 const char *stdout_name = env_get("stdout");
263 int rows = 25, cols = 80;
265 if (stdout_name && !strcmp(stdout_name, "vidconsole") &&
266 IS_ENABLED(CONFIG_DM_VIDEO)) {
267 struct stdio_dev *stdout_dev =
268 stdio_get_by_name("vidconsole");
269 struct udevice *dev = stdout_dev->priv;
270 struct vidconsole_priv *priv =
271 dev_get_uclass_priv(dev);
274 } else if (query_console_serial(&rows, &cols)) {
278 /* Test if we can have Mode 1 */
279 if (cols >= 80 && rows >= 50) {
280 efi_cout_modes[1].present = 1;
281 efi_con_mode.max_mode = 2;
285 * Install our mode as mode 2 if it is different
286 * than mode 0 or 1 and set it as the currently selected mode
288 if (!cout_mode_matches(&efi_cout_modes[0], rows, cols) &&
289 !cout_mode_matches(&efi_cout_modes[1], rows, cols)) {
290 efi_cout_modes[EFI_COUT_MODE_2].columns = cols;
291 efi_cout_modes[EFI_COUT_MODE_2].rows = rows;
292 efi_cout_modes[EFI_COUT_MODE_2].present = 1;
293 efi_con_mode.max_mode = EFI_MAX_COUT_MODE;
294 efi_con_mode.mode = EFI_COUT_MODE_2;
298 static efi_status_t EFIAPI efi_cout_query_mode(
299 struct efi_simple_text_output_protocol *this,
300 unsigned long mode_number, unsigned long *columns,
303 EFI_ENTRY("%p, %ld, %p, %p", this, mode_number, columns, rows);
305 if (mode_number >= efi_con_mode.max_mode)
306 return EFI_EXIT(EFI_UNSUPPORTED);
308 if (efi_cout_modes[mode_number].present != 1)
309 return EFI_EXIT(EFI_UNSUPPORTED);
312 *columns = efi_cout_modes[mode_number].columns;
314 *rows = efi_cout_modes[mode_number].rows;
316 return EFI_EXIT(EFI_SUCCESS);
319 static efi_status_t EFIAPI efi_cout_set_mode(
320 struct efi_simple_text_output_protocol *this,
321 unsigned long mode_number)
323 EFI_ENTRY("%p, %ld", this, mode_number);
326 if (mode_number > efi_con_mode.max_mode)
327 return EFI_EXIT(EFI_UNSUPPORTED);
329 efi_con_mode.mode = mode_number;
330 efi_con_mode.cursor_column = 0;
331 efi_con_mode.cursor_row = 0;
333 return EFI_EXIT(EFI_SUCCESS);
336 static const struct {
340 { 30, 40 }, /* 0: black */
341 { 34, 44 }, /* 1: blue */
342 { 32, 42 }, /* 2: green */
343 { 36, 46 }, /* 3: cyan */
344 { 31, 41 }, /* 4: red */
345 { 35, 45 }, /* 5: magenta */
346 { 33, 43 }, /* 6: brown, map to yellow as EDK2 does*/
347 { 37, 47 }, /* 7: light gray, map to white */
350 /* See EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute(). */
351 static efi_status_t EFIAPI efi_cout_set_attribute(
352 struct efi_simple_text_output_protocol *this,
353 unsigned long attribute)
355 unsigned int bold = EFI_ATTR_BOLD(attribute);
356 unsigned int fg = EFI_ATTR_FG(attribute);
357 unsigned int bg = EFI_ATTR_BG(attribute);
359 EFI_ENTRY("%p, %lx", this, attribute);
362 printf(ESC"[%u;%u;%um", bold, color[fg].fg, color[bg].bg);
364 printf(ESC"[0;37;40m");
366 return EFI_EXIT(EFI_SUCCESS);
369 static efi_status_t EFIAPI efi_cout_clear_screen(
370 struct efi_simple_text_output_protocol *this)
372 EFI_ENTRY("%p", this);
375 efi_con_mode.cursor_column = 0;
376 efi_con_mode.cursor_row = 0;
378 return EFI_EXIT(EFI_SUCCESS);
381 static efi_status_t EFIAPI efi_cout_reset(
382 struct efi_simple_text_output_protocol *this,
383 char extended_verification)
385 EFI_ENTRY("%p, %d", this, extended_verification);
388 EFI_CALL(efi_cout_clear_screen(this));
389 /* Set default colors */
390 printf(ESC "[0;37;40m");
392 return EFI_EXIT(EFI_SUCCESS);
395 static efi_status_t EFIAPI efi_cout_set_cursor_position(
396 struct efi_simple_text_output_protocol *this,
397 unsigned long column, unsigned long row)
399 efi_status_t ret = EFI_SUCCESS;
400 struct simple_text_output_mode *con = &efi_con_mode;
401 struct cout_mode *mode = &efi_cout_modes[con->mode];
403 EFI_ENTRY("%p, %ld, %ld", this, column, row);
405 /* Check parameters */
407 ret = EFI_INVALID_PARAMETER;
410 if (row >= mode->rows || column >= mode->columns) {
411 ret = EFI_UNSUPPORTED;
416 * Set cursor position by sending CSI H.
417 * EFI origin is [0, 0], terminal origin is [1, 1].
419 printf(ESC "[%d;%dH", (int)row + 1, (int)column + 1);
420 efi_con_mode.cursor_column = column;
421 efi_con_mode.cursor_row = row;
423 return EFI_EXIT(ret);
426 static efi_status_t EFIAPI efi_cout_enable_cursor(
427 struct efi_simple_text_output_protocol *this,
430 EFI_ENTRY("%p, %d", this, enable);
432 printf(ESC"[?25%c", enable ? 'h' : 'l');
434 return EFI_EXIT(EFI_SUCCESS);
437 struct efi_simple_text_output_protocol efi_con_out = {
438 .reset = efi_cout_reset,
439 .output_string = efi_cout_output_string,
440 .test_string = efi_cout_test_string,
441 .query_mode = efi_cout_query_mode,
442 .set_mode = efi_cout_set_mode,
443 .set_attribute = efi_cout_set_attribute,
444 .clear_screen = efi_cout_clear_screen,
445 .set_cursor_position = efi_cout_set_cursor_position,
446 .enable_cursor = efi_cout_enable_cursor,
447 .mode = (void*)&efi_con_mode,
451 * struct efi_cin_notify_function - registered console input notify function
453 * @link: link to list
454 * @data: key to notify
455 * @function: function to call
457 struct efi_cin_notify_function {
458 struct list_head link;
459 struct efi_key_data key;
460 efi_status_t (EFIAPI *function)
461 (struct efi_key_data *key_data);
464 static bool key_available;
465 static struct efi_key_data next_key;
466 static LIST_HEAD(cin_notify_functions);
469 * set_shift_mask() - set shift mask
471 * @mod: Xterm shift mask
473 void set_shift_mask(int mod, struct efi_key_state *key_state)
475 key_state->key_shift_state = EFI_SHIFT_STATE_VALID;
479 key_state->key_shift_state |= EFI_LEFT_SHIFT_PRESSED;
481 key_state->key_shift_state |= EFI_LEFT_ALT_PRESSED;
483 key_state->key_shift_state |= EFI_LEFT_CONTROL_PRESSED;
485 key_state->key_shift_state |= EFI_LEFT_LOGO_PRESSED;
487 key_state->key_shift_state |= EFI_LEFT_LOGO_PRESSED;
492 * analyze_modifiers() - analyze modifiers (shift, alt, ctrl) for function keys
494 * This gets called when we have already parsed CSI.
496 * @modifiers: bit mask (shift, alt, ctrl)
497 * @return: the unmodified code
499 static int analyze_modifiers(struct efi_key_state *key_state)
501 int c, mod = 0, ret = 0;
525 set_shift_mask(mod, key_state);
532 * efi_cin_read_key() - read a key from the console input
534 * @key: - key received
535 * Return: - status code
537 static efi_status_t efi_cin_read_key(struct efi_key_data *key)
539 struct efi_input_key pressed_key = {
545 if (console_read_unicode(&ch))
546 return EFI_NOT_READY;
548 key->key_state.key_shift_state = EFI_SHIFT_STATE_INVALID;
549 key->key_state.key_toggle_state = EFI_TOGGLE_STATE_INVALID;
551 /* We do not support multi-word codes */
558 * Xterm Control Sequences
559 * https://www.xfree86.org/4.8.0/ctlseqs.html
564 pressed_key.scan_code = 23;
566 case 'O': /* F1 - F4 */
568 /* consider modifiers */
570 set_shift_mask(ch - '0', &key->key_state);
573 pressed_key.scan_code = ch - 'P' + 11;
578 case 'A'...'D': /* up, down right, left */
579 pressed_key.scan_code = ch - 'A' + 1;
582 pressed_key.scan_code = 6;
585 pressed_key.scan_code = 5;
588 ch = analyze_modifiers(&key->key_state);
590 case '1'...'5': /* F1 - F5 */
591 pressed_key.scan_code = ch - '1' + 11;
593 case '7'...'9': /* F6 - F8 */
594 pressed_key.scan_code = ch - '7' + 16;
596 case 'A'...'D': /* up, down right, left */
597 pressed_key.scan_code = ch - 'A' + 1;
600 pressed_key.scan_code = 6; /* End */
603 pressed_key.scan_code = 5; /* Home */
608 ch = analyze_modifiers(&key->key_state);
610 case '0'...'1': /* F9 - F10 */
611 pressed_key.scan_code = ch - '0' + 19;
613 case '3'...'4': /* F11 - F12 */
614 pressed_key.scan_code = ch - '3' + 21;
617 pressed_key.scan_code = 7;
622 pressed_key.scan_code = 8;
623 analyze_modifiers(&key->key_state);
625 case '5': /* PG UP */
626 pressed_key.scan_code = 9;
627 analyze_modifiers(&key->key_state);
629 case '6': /* PG DOWN */
630 pressed_key.scan_code = 10;
631 analyze_modifiers(&key->key_state);
637 set_shift_mask(3, &key->key_state);
644 if (pressed_key.scan_code) {
645 key->key_state.key_shift_state |= EFI_SHIFT_STATE_VALID;
647 pressed_key.unicode_char = ch;
650 * Assume left control key for control characters typically
651 * entered using the control key.
653 if (ch >= 0x01 && ch <= 0x1f) {
654 key->key_state.key_shift_state |=
655 EFI_SHIFT_STATE_VALID;
660 key->key_state.key_shift_state |=
661 EFI_LEFT_CONTROL_PRESSED;
665 key->key = pressed_key;
671 * efi_cin_notify() - notify registered functions
673 static void efi_cin_notify(void)
675 struct efi_cin_notify_function *item;
677 list_for_each_entry(item, &cin_notify_functions, link) {
680 /* We do not support toggle states */
681 if (item->key.key.unicode_char || item->key.key.scan_code) {
682 if (item->key.key.unicode_char !=
683 next_key.key.unicode_char ||
684 item->key.key.scan_code != next_key.key.scan_code)
687 if (item->key.key_state.key_shift_state &&
688 item->key.key_state.key_shift_state !=
689 next_key.key_state.key_shift_state)
693 /* We don't bother about the return code */
694 EFI_CALL(item->function(&next_key));
699 * efi_cin_check() - check if keyboard input is available
701 static void efi_cin_check(void)
706 efi_signal_event(efi_con_in.wait_for_key, true);
711 ret = efi_cin_read_key(&next_key);
712 if (ret == EFI_SUCCESS) {
713 key_available = true;
715 /* Notify registered functions */
718 /* Queue the wait for key event */
720 efi_signal_event(efi_con_in.wait_for_key, true);
726 * efi_cin_empty_buffer() - empty input buffer
728 static void efi_cin_empty_buffer(void)
732 key_available = false;
736 * efi_cin_reset_ex() - reset console input
738 * @this: - the extended simple text input protocol
739 * @extended_verification: - extended verification
741 * This function implements the reset service of the
742 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
744 * See the Unified Extensible Firmware Interface (UEFI) specification for
747 * Return: old value of the task priority level
749 static efi_status_t EFIAPI efi_cin_reset_ex(
750 struct efi_simple_text_input_ex_protocol *this,
751 bool extended_verification)
753 efi_status_t ret = EFI_SUCCESS;
755 EFI_ENTRY("%p, %d", this, extended_verification);
757 /* Check parameters */
759 ret = EFI_INVALID_PARAMETER;
763 efi_cin_empty_buffer();
765 return EFI_EXIT(ret);
769 * efi_cin_read_key_stroke_ex() - read key stroke
771 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
772 * @key_data: key read from console
773 * Return: status code
775 * This function implements the ReadKeyStrokeEx service of the
776 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
778 * See the Unified Extensible Firmware Interface (UEFI) specification for
781 static efi_status_t EFIAPI efi_cin_read_key_stroke_ex(
782 struct efi_simple_text_input_ex_protocol *this,
783 struct efi_key_data *key_data)
785 efi_status_t ret = EFI_SUCCESS;
787 EFI_ENTRY("%p, %p", this, key_data);
789 /* Check parameters */
790 if (!this || !key_data) {
791 ret = EFI_INVALID_PARAMETER;
795 /* We don't do interrupts, so check for timers cooperatively */
798 /* Enable console input after ExitBootServices */
801 if (!key_available) {
806 * CTRL+A - CTRL+Z have to be signaled as a - z.
807 * SHIFT+CTRL+A - SHIFT+CTRL+Z have to be signaled as A - Z.
809 switch (next_key.key.unicode_char) {
813 if (!(next_key.key_state.key_toggle_state &
814 EFI_CAPS_LOCK_ACTIVE) ^
815 !(next_key.key_state.key_shift_state &
816 (EFI_LEFT_SHIFT_PRESSED | EFI_RIGHT_SHIFT_PRESSED)))
817 next_key.key.unicode_char += 0x40;
819 next_key.key.unicode_char += 0x60;
821 *key_data = next_key;
822 key_available = false;
823 efi_con_in.wait_for_key->is_signaled = false;
826 return EFI_EXIT(ret);
830 * efi_cin_set_state() - set toggle key state
832 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
833 * @key_toggle_state: pointer to key toggle state
834 * Return: status code
836 * This function implements the SetState service of the
837 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
839 * See the Unified Extensible Firmware Interface (UEFI) specification for
842 static efi_status_t EFIAPI efi_cin_set_state(
843 struct efi_simple_text_input_ex_protocol *this,
844 u8 *key_toggle_state)
846 EFI_ENTRY("%p, %p", this, key_toggle_state);
848 * U-Boot supports multiple console input sources like serial and
849 * net console for which a key toggle state cannot be set at all.
851 * According to the UEFI specification it is allowable to not implement
854 return EFI_EXIT(EFI_UNSUPPORTED);
858 * efi_cin_register_key_notify() - register key notification function
860 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
861 * @key_data: key to be notified
862 * @key_notify_function: function to be called if the key is pressed
863 * @notify_handle: handle for unregistering the notification
864 * Return: status code
866 * This function implements the SetState service of the
867 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
869 * See the Unified Extensible Firmware Interface (UEFI) specification for
872 static efi_status_t EFIAPI efi_cin_register_key_notify(
873 struct efi_simple_text_input_ex_protocol *this,
874 struct efi_key_data *key_data,
875 efi_status_t (EFIAPI *key_notify_function)(
876 struct efi_key_data *key_data),
877 void **notify_handle)
879 efi_status_t ret = EFI_SUCCESS;
880 struct efi_cin_notify_function *notify_function;
882 EFI_ENTRY("%p, %p, %p, %p",
883 this, key_data, key_notify_function, notify_handle);
885 /* Check parameters */
886 if (!this || !key_data || !key_notify_function || !notify_handle) {
887 ret = EFI_INVALID_PARAMETER;
891 EFI_PRINT("u+%04x, sc %04x, sh %08x, tg %02x\n",
892 key_data->key.unicode_char,
893 key_data->key.scan_code,
894 key_data->key_state.key_shift_state,
895 key_data->key_state.key_toggle_state);
897 notify_function = calloc(1, sizeof(struct efi_cin_notify_function));
898 if (!notify_function) {
899 ret = EFI_OUT_OF_RESOURCES;
902 notify_function->key = *key_data;
903 notify_function->function = key_notify_function;
904 list_add_tail(¬ify_function->link, &cin_notify_functions);
905 *notify_handle = notify_function;
907 return EFI_EXIT(ret);
911 * efi_cin_unregister_key_notify() - unregister key notification function
913 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
914 * @notification_handle: handle received when registering
915 * Return: status code
917 * This function implements the SetState service of the
918 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
920 * See the Unified Extensible Firmware Interface (UEFI) specification for
923 static efi_status_t EFIAPI efi_cin_unregister_key_notify(
924 struct efi_simple_text_input_ex_protocol *this,
925 void *notification_handle)
927 efi_status_t ret = EFI_INVALID_PARAMETER;
928 struct efi_cin_notify_function *item, *notify_function =
931 EFI_ENTRY("%p, %p", this, notification_handle);
933 /* Check parameters */
934 if (!this || !notification_handle)
937 list_for_each_entry(item, &cin_notify_functions, link) {
938 if (item == notify_function) {
943 if (ret != EFI_SUCCESS)
946 /* Remove the notify function */
947 list_del(¬ify_function->link);
948 free(notify_function);
950 return EFI_EXIT(ret);
955 * efi_cin_reset() - drain the input buffer
957 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
958 * @extended_verification: allow for exhaustive verification
959 * Return: status code
961 * This function implements the Reset service of the
962 * EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
964 * See the Unified Extensible Firmware Interface (UEFI) specification for
967 static efi_status_t EFIAPI efi_cin_reset
968 (struct efi_simple_text_input_protocol *this,
969 bool extended_verification)
971 efi_status_t ret = EFI_SUCCESS;
973 EFI_ENTRY("%p, %d", this, extended_verification);
975 /* Check parameters */
977 ret = EFI_INVALID_PARAMETER;
981 efi_cin_empty_buffer();
983 return EFI_EXIT(ret);
987 * efi_cin_read_key_stroke() - read key stroke
989 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
990 * @key: key read from console
991 * Return: status code
993 * This function implements the ReadKeyStroke service of the
994 * EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
996 * See the Unified Extensible Firmware Interface (UEFI) specification for
999 static efi_status_t EFIAPI efi_cin_read_key_stroke
1000 (struct efi_simple_text_input_protocol *this,
1001 struct efi_input_key *key)
1003 efi_status_t ret = EFI_SUCCESS;
1005 EFI_ENTRY("%p, %p", this, key);
1007 /* Check parameters */
1008 if (!this || !key) {
1009 ret = EFI_INVALID_PARAMETER;
1013 /* We don't do interrupts, so check for timers cooperatively */
1016 /* Enable console input after ExitBootServices */
1019 if (!key_available) {
1020 ret = EFI_NOT_READY;
1023 *key = next_key.key;
1024 key_available = false;
1025 efi_con_in.wait_for_key->is_signaled = false;
1027 return EFI_EXIT(ret);
1030 static struct efi_simple_text_input_ex_protocol efi_con_in_ex = {
1031 .reset = efi_cin_reset_ex,
1032 .read_key_stroke_ex = efi_cin_read_key_stroke_ex,
1033 .wait_for_key_ex = NULL,
1034 .set_state = efi_cin_set_state,
1035 .register_key_notify = efi_cin_register_key_notify,
1036 .unregister_key_notify = efi_cin_unregister_key_notify,
1039 struct efi_simple_text_input_protocol efi_con_in = {
1040 .reset = efi_cin_reset,
1041 .read_key_stroke = efi_cin_read_key_stroke,
1042 .wait_for_key = NULL,
1045 static struct efi_event *console_timer_event;
1048 * efi_console_timer_notify() - notify the console timer event
1050 * @event: console timer event
1051 * @context: not used
1053 static void EFIAPI efi_console_timer_notify(struct efi_event *event,
1056 EFI_ENTRY("%p, %p", event, context);
1058 EFI_EXIT(EFI_SUCCESS);
1062 * efi_key_notify() - notify the wait for key event
1064 * @event: wait for key event
1065 * @context: not used
1067 static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
1069 EFI_ENTRY("%p, %p", event, context);
1071 EFI_EXIT(EFI_SUCCESS);
1075 * efi_console_register() - install the console protocols
1077 * This function is called from do_bootefi_exec().
1079 * Return: status code
1081 efi_status_t efi_console_register(void)
1084 efi_handle_t console_output_handle;
1085 efi_handle_t console_input_handle;
1087 /* Set up mode information */
1088 query_console_size();
1090 /* Create handles */
1091 r = efi_create_handle(&console_output_handle);
1092 if (r != EFI_SUCCESS)
1095 r = efi_add_protocol(console_output_handle,
1096 &efi_guid_text_output_protocol, &efi_con_out);
1097 if (r != EFI_SUCCESS)
1099 systab.con_out_handle = console_output_handle;
1100 systab.stderr_handle = console_output_handle;
1102 r = efi_create_handle(&console_input_handle);
1103 if (r != EFI_SUCCESS)
1106 r = efi_add_protocol(console_input_handle,
1107 &efi_guid_text_input_protocol, &efi_con_in);
1108 if (r != EFI_SUCCESS)
1110 systab.con_in_handle = console_input_handle;
1111 r = efi_add_protocol(console_input_handle,
1112 &efi_guid_text_input_ex_protocol, &efi_con_in_ex);
1113 if (r != EFI_SUCCESS)
1116 /* Create console events */
1117 r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK, efi_key_notify,
1118 NULL, NULL, &efi_con_in.wait_for_key);
1119 if (r != EFI_SUCCESS) {
1120 printf("ERROR: Failed to register WaitForKey event\n");
1123 efi_con_in_ex.wait_for_key_ex = efi_con_in.wait_for_key;
1124 r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
1125 efi_console_timer_notify, NULL, NULL,
1126 &console_timer_event);
1127 if (r != EFI_SUCCESS) {
1128 printf("ERROR: Failed to register console event\n");
1131 /* 5000 ns cycle is sufficient for 2 MBaud */
1132 r = efi_set_timer(console_timer_event, EFI_TIMER_PERIODIC, 50);
1133 if (r != EFI_SUCCESS)
1134 printf("ERROR: Failed to set console timer\n");
1137 printf("ERROR: Out of memory\n");