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 buf = malloc(utf16_utf8_strlen(string) + 1);
141 ret = EFI_OUT_OF_RESOURCES;
145 utf16_utf8_strcpy(&pos, string);
150 * Update the cursor position.
152 * The UEFI spec provides advance rules for U+0000, U+0008, U+000A,
153 * and U000D. All other characters, including control characters
154 * U+0007 (BEL) and U+0009 (TAB), have to increase the column by one.
156 for (p = string; *p; ++p) {
158 case '\b': /* U+0008, backspace */
159 con->cursor_column = max(0, con->cursor_column - 1);
161 case '\n': /* U+000A, newline */
162 con->cursor_column = 0;
165 case '\r': /* U+000D, carriage-return */
166 con->cursor_column = 0;
168 case 0xd800 ... 0xdbff:
170 * Ignore high surrogates, we do not want to count a
171 * Unicode character twice.
175 con->cursor_column++;
178 if (con->cursor_column >= mode->columns) {
179 con->cursor_column = 0;
182 con->cursor_row = min(con->cursor_row, (s32)mode->rows - 1);
186 return EFI_EXIT(ret);
189 static efi_status_t EFIAPI efi_cout_test_string(
190 struct efi_simple_text_output_protocol *this,
191 const efi_string_t string)
193 EFI_ENTRY("%p, %p", this, string);
194 return EFI_EXIT(EFI_SUCCESS);
197 static bool cout_mode_matches(struct cout_mode *mode, int rows, int cols)
202 return (mode->rows == rows) && (mode->columns == cols);
206 * query_console_serial() - query console size
208 * @rows pointer to return number of rows
209 * @columns pointer to return number of columns
210 * Returns 0 on success
212 static int query_console_serial(int *rows, int *cols)
217 /* Empty input buffer */
222 * Not all terminals understand CSI [18t for querying the console size.
223 * We should adhere to escape sequences documented in the console_codes
224 * man page and the ECMA-48 standard.
226 * So here we follow a different approach. We position the cursor to the
227 * bottom right and query its position. Before leaving the function we
228 * restore the original cursor position.
230 printf(ESC "7" /* Save cursor position */
231 ESC "[r" /* Set scrolling region to full window */
232 ESC "[999;999H" /* Move to bottom right corner */
233 ESC "[6n"); /* Query cursor position */
235 /* Read {rows,cols} */
236 if (term_read_reply(n, 2, 'R')) {
244 printf(ESC "8"); /* Restore cursor position */
249 * Update the mode table.
251 * By default the only mode available is 80x25. If the console has at least 50
252 * lines, enable mode 80x50. If we can query the console size and it is neither
253 * 80x25 nor 80x50, set it as an additional mode.
255 static void query_console_size(void)
257 const char *stdout_name = env_get("stdout");
258 int rows = 25, cols = 80;
260 if (stdout_name && !strcmp(stdout_name, "vidconsole") &&
261 IS_ENABLED(CONFIG_DM_VIDEO)) {
262 struct stdio_dev *stdout_dev =
263 stdio_get_by_name("vidconsole");
264 struct udevice *dev = stdout_dev->priv;
265 struct vidconsole_priv *priv =
266 dev_get_uclass_priv(dev);
269 } else if (query_console_serial(&rows, &cols)) {
273 /* Test if we can have Mode 1 */
274 if (cols >= 80 && rows >= 50) {
275 efi_cout_modes[1].present = 1;
276 efi_con_mode.max_mode = 2;
280 * Install our mode as mode 2 if it is different
281 * than mode 0 or 1 and set it as the currently selected mode
283 if (!cout_mode_matches(&efi_cout_modes[0], rows, cols) &&
284 !cout_mode_matches(&efi_cout_modes[1], rows, cols)) {
285 efi_cout_modes[EFI_COUT_MODE_2].columns = cols;
286 efi_cout_modes[EFI_COUT_MODE_2].rows = rows;
287 efi_cout_modes[EFI_COUT_MODE_2].present = 1;
288 efi_con_mode.max_mode = EFI_MAX_COUT_MODE;
289 efi_con_mode.mode = EFI_COUT_MODE_2;
293 static efi_status_t EFIAPI efi_cout_query_mode(
294 struct efi_simple_text_output_protocol *this,
295 unsigned long mode_number, unsigned long *columns,
298 EFI_ENTRY("%p, %ld, %p, %p", this, mode_number, columns, rows);
300 if (mode_number >= efi_con_mode.max_mode)
301 return EFI_EXIT(EFI_UNSUPPORTED);
303 if (efi_cout_modes[mode_number].present != 1)
304 return EFI_EXIT(EFI_UNSUPPORTED);
307 *columns = efi_cout_modes[mode_number].columns;
309 *rows = efi_cout_modes[mode_number].rows;
311 return EFI_EXIT(EFI_SUCCESS);
314 static efi_status_t EFIAPI efi_cout_set_mode(
315 struct efi_simple_text_output_protocol *this,
316 unsigned long mode_number)
318 EFI_ENTRY("%p, %ld", this, mode_number);
321 if (mode_number > efi_con_mode.max_mode)
322 return EFI_EXIT(EFI_UNSUPPORTED);
324 efi_con_mode.mode = mode_number;
325 efi_con_mode.cursor_column = 0;
326 efi_con_mode.cursor_row = 0;
328 return EFI_EXIT(EFI_SUCCESS);
331 static const struct {
335 { 30, 40 }, /* 0: black */
336 { 34, 44 }, /* 1: blue */
337 { 32, 42 }, /* 2: green */
338 { 36, 46 }, /* 3: cyan */
339 { 31, 41 }, /* 4: red */
340 { 35, 45 }, /* 5: magenta */
341 { 33, 43 }, /* 6: brown, map to yellow as EDK2 does*/
342 { 37, 47 }, /* 7: light gray, map to white */
345 /* See EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.SetAttribute(). */
346 static efi_status_t EFIAPI efi_cout_set_attribute(
347 struct efi_simple_text_output_protocol *this,
348 unsigned long attribute)
350 unsigned int bold = EFI_ATTR_BOLD(attribute);
351 unsigned int fg = EFI_ATTR_FG(attribute);
352 unsigned int bg = EFI_ATTR_BG(attribute);
354 EFI_ENTRY("%p, %lx", this, attribute);
357 printf(ESC"[%u;%u;%um", bold, color[fg].fg, color[bg].bg);
359 printf(ESC"[0;37;40m");
361 return EFI_EXIT(EFI_SUCCESS);
364 static efi_status_t EFIAPI efi_cout_clear_screen(
365 struct efi_simple_text_output_protocol *this)
367 EFI_ENTRY("%p", this);
370 efi_con_mode.cursor_column = 0;
371 efi_con_mode.cursor_row = 0;
373 return EFI_EXIT(EFI_SUCCESS);
376 static efi_status_t EFIAPI efi_cout_reset(
377 struct efi_simple_text_output_protocol *this,
378 char extended_verification)
380 EFI_ENTRY("%p, %d", this, extended_verification);
383 EFI_CALL(efi_cout_clear_screen(this));
384 /* Set default colors */
385 printf(ESC "[0;37;40m");
387 return EFI_EXIT(EFI_SUCCESS);
390 static efi_status_t EFIAPI efi_cout_set_cursor_position(
391 struct efi_simple_text_output_protocol *this,
392 unsigned long column, unsigned long row)
394 efi_status_t ret = EFI_SUCCESS;
395 struct simple_text_output_mode *con = &efi_con_mode;
396 struct cout_mode *mode = &efi_cout_modes[con->mode];
398 EFI_ENTRY("%p, %ld, %ld", this, column, row);
400 /* Check parameters */
402 ret = EFI_INVALID_PARAMETER;
405 if (row >= mode->rows || column >= mode->columns) {
406 ret = EFI_UNSUPPORTED;
411 * Set cursor position by sending CSI H.
412 * EFI origin is [0, 0], terminal origin is [1, 1].
414 printf(ESC "[%d;%dH", (int)row + 1, (int)column + 1);
415 efi_con_mode.cursor_column = column;
416 efi_con_mode.cursor_row = row;
418 return EFI_EXIT(ret);
421 static efi_status_t EFIAPI efi_cout_enable_cursor(
422 struct efi_simple_text_output_protocol *this,
425 EFI_ENTRY("%p, %d", this, enable);
427 printf(ESC"[?25%c", enable ? 'h' : 'l');
429 return EFI_EXIT(EFI_SUCCESS);
432 struct efi_simple_text_output_protocol efi_con_out = {
433 .reset = efi_cout_reset,
434 .output_string = efi_cout_output_string,
435 .test_string = efi_cout_test_string,
436 .query_mode = efi_cout_query_mode,
437 .set_mode = efi_cout_set_mode,
438 .set_attribute = efi_cout_set_attribute,
439 .clear_screen = efi_cout_clear_screen,
440 .set_cursor_position = efi_cout_set_cursor_position,
441 .enable_cursor = efi_cout_enable_cursor,
442 .mode = (void*)&efi_con_mode,
446 * struct efi_cin_notify_function - registered console input notify function
448 * @link: link to list
449 * @data: key to notify
450 * @function: function to call
452 struct efi_cin_notify_function {
453 struct list_head link;
454 struct efi_key_data key;
455 efi_status_t (EFIAPI *function)
456 (struct efi_key_data *key_data);
459 static bool key_available;
460 static struct efi_key_data next_key;
461 static LIST_HEAD(cin_notify_functions);
464 * set_shift_mask() - set shift mask
466 * @mod: Xterm shift mask
468 void set_shift_mask(int mod, struct efi_key_state *key_state)
470 key_state->key_shift_state = EFI_SHIFT_STATE_VALID;
474 key_state->key_shift_state |= EFI_LEFT_SHIFT_PRESSED;
476 key_state->key_shift_state |= EFI_LEFT_ALT_PRESSED;
478 key_state->key_shift_state |= EFI_LEFT_CONTROL_PRESSED;
480 key_state->key_shift_state |= EFI_LEFT_LOGO_PRESSED;
482 key_state->key_shift_state |= EFI_LEFT_LOGO_PRESSED;
487 * analyze_modifiers() - analyze modifiers (shift, alt, ctrl) for function keys
489 * This gets called when we have already parsed CSI.
491 * @modifiers: bit mask (shift, alt, ctrl)
492 * @return: the unmodified code
494 static int analyze_modifiers(struct efi_key_state *key_state)
496 int c, mod = 0, ret = 0;
520 set_shift_mask(mod, key_state);
527 * efi_cin_read_key() - read a key from the console input
529 * @key: - key received
530 * Return: - status code
532 static efi_status_t efi_cin_read_key(struct efi_key_data *key)
534 struct efi_input_key pressed_key = {
540 if (console_read_unicode(&ch))
541 return EFI_NOT_READY;
543 key->key_state.key_shift_state = EFI_SHIFT_STATE_INVALID;
544 key->key_state.key_toggle_state = EFI_TOGGLE_STATE_INVALID;
546 /* We do not support multi-word codes */
553 * Xterm Control Sequences
554 * https://www.xfree86.org/4.8.0/ctlseqs.html
559 pressed_key.scan_code = 23;
561 case 'O': /* F1 - F4 */
563 /* consider modifiers */
565 set_shift_mask(ch - '0', &key->key_state);
568 pressed_key.scan_code = ch - 'P' + 11;
573 case 'A'...'D': /* up, down right, left */
574 pressed_key.scan_code = ch - 'A' + 1;
577 pressed_key.scan_code = 6;
580 pressed_key.scan_code = 5;
583 ch = analyze_modifiers(&key->key_state);
585 case '1'...'5': /* F1 - F5 */
586 pressed_key.scan_code = ch - '1' + 11;
588 case '7'...'9': /* F6 - F8 */
589 pressed_key.scan_code = ch - '7' + 16;
591 case 'A'...'D': /* up, down right, left */
592 pressed_key.scan_code = ch - 'A' + 1;
595 pressed_key.scan_code = 6; /* End */
598 pressed_key.scan_code = 5; /* Home */
603 ch = analyze_modifiers(&key->key_state);
605 case '0'...'1': /* F9 - F10 */
606 pressed_key.scan_code = ch - '0' + 19;
608 case '3'...'4': /* F11 - F12 */
609 pressed_key.scan_code = ch - '3' + 21;
612 pressed_key.scan_code = 7;
617 pressed_key.scan_code = 8;
618 analyze_modifiers(&key->key_state);
620 case '5': /* PG UP */
621 pressed_key.scan_code = 9;
622 analyze_modifiers(&key->key_state);
624 case '6': /* PG DOWN */
625 pressed_key.scan_code = 10;
626 analyze_modifiers(&key->key_state);
632 set_shift_mask(3, &key->key_state);
639 if (pressed_key.scan_code) {
640 key->key_state.key_shift_state |= EFI_SHIFT_STATE_VALID;
642 pressed_key.unicode_char = ch;
645 * Assume left control key for control characters typically
646 * entered using the control key.
648 if (ch >= 0x01 && ch <= 0x1f) {
649 key->key_state.key_shift_state |=
650 EFI_SHIFT_STATE_VALID;
655 key->key_state.key_shift_state |=
656 EFI_LEFT_CONTROL_PRESSED;
660 key->key = pressed_key;
666 * efi_cin_notify() - notify registered functions
668 static void efi_cin_notify(void)
670 struct efi_cin_notify_function *item;
672 list_for_each_entry(item, &cin_notify_functions, link) {
675 /* We do not support toggle states */
676 if (item->key.key.unicode_char || item->key.key.scan_code) {
677 if (item->key.key.unicode_char !=
678 next_key.key.unicode_char ||
679 item->key.key.scan_code != next_key.key.scan_code)
682 if (item->key.key_state.key_shift_state &&
683 item->key.key_state.key_shift_state !=
684 next_key.key_state.key_shift_state)
688 /* We don't bother about the return code */
689 EFI_CALL(item->function(&next_key));
694 * efi_cin_check() - check if keyboard input is available
696 static void efi_cin_check(void)
701 efi_signal_event(efi_con_in.wait_for_key, true);
706 ret = efi_cin_read_key(&next_key);
707 if (ret == EFI_SUCCESS) {
708 key_available = true;
710 /* Notify registered functions */
713 /* Queue the wait for key event */
715 efi_signal_event(efi_con_in.wait_for_key, true);
721 * efi_cin_empty_buffer() - empty input buffer
723 static void efi_cin_empty_buffer(void)
727 key_available = false;
731 * efi_cin_reset_ex() - reset console input
733 * @this: - the extended simple text input protocol
734 * @extended_verification: - extended verification
736 * This function implements the reset service of the
737 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
739 * See the Unified Extensible Firmware Interface (UEFI) specification for
742 * Return: old value of the task priority level
744 static efi_status_t EFIAPI efi_cin_reset_ex(
745 struct efi_simple_text_input_ex_protocol *this,
746 bool extended_verification)
748 efi_status_t ret = EFI_SUCCESS;
750 EFI_ENTRY("%p, %d", this, extended_verification);
752 /* Check parameters */
754 ret = EFI_INVALID_PARAMETER;
758 efi_cin_empty_buffer();
760 return EFI_EXIT(ret);
764 * efi_cin_read_key_stroke_ex() - read key stroke
766 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
767 * @key_data: key read from console
768 * Return: status code
770 * This function implements the ReadKeyStrokeEx service of the
771 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
773 * See the Unified Extensible Firmware Interface (UEFI) specification for
776 static efi_status_t EFIAPI efi_cin_read_key_stroke_ex(
777 struct efi_simple_text_input_ex_protocol *this,
778 struct efi_key_data *key_data)
780 efi_status_t ret = EFI_SUCCESS;
782 EFI_ENTRY("%p, %p", this, key_data);
784 /* Check parameters */
785 if (!this || !key_data) {
786 ret = EFI_INVALID_PARAMETER;
790 /* We don't do interrupts, so check for timers cooperatively */
793 /* Enable console input after ExitBootServices */
796 if (!key_available) {
801 * CTRL+A - CTRL+Z have to be signaled as a - z.
802 * SHIFT+CTRL+A - SHIFT+CTRL+Z have to be signaled as A - Z.
804 switch (next_key.key.unicode_char) {
808 if (!(next_key.key_state.key_toggle_state &
809 EFI_CAPS_LOCK_ACTIVE) ^
810 !(next_key.key_state.key_shift_state &
811 (EFI_LEFT_SHIFT_PRESSED | EFI_RIGHT_SHIFT_PRESSED)))
812 next_key.key.unicode_char += 0x40;
814 next_key.key.unicode_char += 0x60;
816 *key_data = next_key;
817 key_available = false;
818 efi_con_in.wait_for_key->is_signaled = false;
821 return EFI_EXIT(ret);
825 * efi_cin_set_state() - set toggle key state
827 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
828 * @key_toggle_state: key toggle state
829 * Return: status code
831 * This function implements the SetState service of the
832 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
834 * See the Unified Extensible Firmware Interface (UEFI) specification for
837 static efi_status_t EFIAPI efi_cin_set_state(
838 struct efi_simple_text_input_ex_protocol *this,
841 EFI_ENTRY("%p, %u", this, key_toggle_state);
843 * U-Boot supports multiple console input sources like serial and
844 * net console for which a key toggle state cannot be set at all.
846 * According to the UEFI specification it is allowable to not implement
849 return EFI_EXIT(EFI_UNSUPPORTED);
853 * efi_cin_register_key_notify() - register key notification function
855 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
856 * @key_data: key to be notified
857 * @key_notify_function: function to be called if the key is pressed
858 * @notify_handle: handle for unregistering the notification
859 * Return: status code
861 * This function implements the SetState service of the
862 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
864 * See the Unified Extensible Firmware Interface (UEFI) specification for
867 static efi_status_t EFIAPI efi_cin_register_key_notify(
868 struct efi_simple_text_input_ex_protocol *this,
869 struct efi_key_data *key_data,
870 efi_status_t (EFIAPI *key_notify_function)(
871 struct efi_key_data *key_data),
872 void **notify_handle)
874 efi_status_t ret = EFI_SUCCESS;
875 struct efi_cin_notify_function *notify_function;
877 EFI_ENTRY("%p, %p, %p, %p",
878 this, key_data, key_notify_function, notify_handle);
880 /* Check parameters */
881 if (!this || !key_data || !key_notify_function || !notify_handle) {
882 ret = EFI_INVALID_PARAMETER;
886 EFI_PRINT("u+%04x, sc %04x, sh %08x, tg %02x\n",
887 key_data->key.unicode_char,
888 key_data->key.scan_code,
889 key_data->key_state.key_shift_state,
890 key_data->key_state.key_toggle_state);
892 notify_function = calloc(1, sizeof(struct efi_cin_notify_function));
893 if (!notify_function) {
894 ret = EFI_OUT_OF_RESOURCES;
897 notify_function->key = *key_data;
898 notify_function->function = key_notify_function;
899 list_add_tail(¬ify_function->link, &cin_notify_functions);
900 *notify_handle = notify_function;
902 return EFI_EXIT(ret);
906 * efi_cin_unregister_key_notify() - unregister key notification function
908 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
909 * @notification_handle: handle received when registering
910 * Return: status code
912 * This function implements the SetState service of the
913 * EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL.
915 * See the Unified Extensible Firmware Interface (UEFI) specification for
918 static efi_status_t EFIAPI efi_cin_unregister_key_notify(
919 struct efi_simple_text_input_ex_protocol *this,
920 void *notification_handle)
922 efi_status_t ret = EFI_INVALID_PARAMETER;
923 struct efi_cin_notify_function *item, *notify_function =
926 EFI_ENTRY("%p, %p", this, notification_handle);
928 /* Check parameters */
929 if (!this || !notification_handle)
932 list_for_each_entry(item, &cin_notify_functions, link) {
933 if (item == notify_function) {
938 if (ret != EFI_SUCCESS)
941 /* Remove the notify function */
942 list_del(¬ify_function->link);
943 free(notify_function);
945 return EFI_EXIT(ret);
950 * efi_cin_reset() - drain the input buffer
952 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
953 * @extended_verification: allow for exhaustive verification
954 * Return: status code
956 * This function implements the Reset service of the
957 * EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
959 * See the Unified Extensible Firmware Interface (UEFI) specification for
962 static efi_status_t EFIAPI efi_cin_reset
963 (struct efi_simple_text_input_protocol *this,
964 bool extended_verification)
966 efi_status_t ret = EFI_SUCCESS;
968 EFI_ENTRY("%p, %d", this, extended_verification);
970 /* Check parameters */
972 ret = EFI_INVALID_PARAMETER;
976 efi_cin_empty_buffer();
978 return EFI_EXIT(ret);
982 * efi_cin_read_key_stroke() - read key stroke
984 * @this: instance of the EFI_SIMPLE_TEXT_INPUT_PROTOCOL
985 * @key: key read from console
986 * Return: status code
988 * This function implements the ReadKeyStroke service of the
989 * EFI_SIMPLE_TEXT_INPUT_PROTOCOL.
991 * See the Unified Extensible Firmware Interface (UEFI) specification for
994 static efi_status_t EFIAPI efi_cin_read_key_stroke
995 (struct efi_simple_text_input_protocol *this,
996 struct efi_input_key *key)
998 efi_status_t ret = EFI_SUCCESS;
1000 EFI_ENTRY("%p, %p", this, key);
1002 /* Check parameters */
1003 if (!this || !key) {
1004 ret = EFI_INVALID_PARAMETER;
1008 /* We don't do interrupts, so check for timers cooperatively */
1011 /* Enable console input after ExitBootServices */
1014 if (!key_available) {
1015 ret = EFI_NOT_READY;
1018 *key = next_key.key;
1019 key_available = false;
1020 efi_con_in.wait_for_key->is_signaled = false;
1022 return EFI_EXIT(ret);
1025 static struct efi_simple_text_input_ex_protocol efi_con_in_ex = {
1026 .reset = efi_cin_reset_ex,
1027 .read_key_stroke_ex = efi_cin_read_key_stroke_ex,
1028 .wait_for_key_ex = NULL,
1029 .set_state = efi_cin_set_state,
1030 .register_key_notify = efi_cin_register_key_notify,
1031 .unregister_key_notify = efi_cin_unregister_key_notify,
1034 struct efi_simple_text_input_protocol efi_con_in = {
1035 .reset = efi_cin_reset,
1036 .read_key_stroke = efi_cin_read_key_stroke,
1037 .wait_for_key = NULL,
1040 static struct efi_event *console_timer_event;
1043 * efi_console_timer_notify() - notify the console timer event
1045 * @event: console timer event
1046 * @context: not used
1048 static void EFIAPI efi_console_timer_notify(struct efi_event *event,
1051 EFI_ENTRY("%p, %p", event, context);
1053 EFI_EXIT(EFI_SUCCESS);
1057 * efi_key_notify() - notify the wait for key event
1059 * @event: wait for key event
1060 * @context: not used
1062 static void EFIAPI efi_key_notify(struct efi_event *event, void *context)
1064 EFI_ENTRY("%p, %p", event, context);
1066 EFI_EXIT(EFI_SUCCESS);
1070 * efi_console_register() - install the console protocols
1072 * This function is called from do_bootefi_exec().
1074 * Return: status code
1076 efi_status_t efi_console_register(void)
1079 efi_handle_t console_output_handle;
1080 efi_handle_t console_input_handle;
1082 /* Set up mode information */
1083 query_console_size();
1085 /* Create handles */
1086 r = efi_create_handle(&console_output_handle);
1087 if (r != EFI_SUCCESS)
1090 r = efi_add_protocol(console_output_handle,
1091 &efi_guid_text_output_protocol, &efi_con_out);
1092 if (r != EFI_SUCCESS)
1094 systab.con_out_handle = console_output_handle;
1095 systab.stderr_handle = console_output_handle;
1097 r = efi_create_handle(&console_input_handle);
1098 if (r != EFI_SUCCESS)
1101 r = efi_add_protocol(console_input_handle,
1102 &efi_guid_text_input_protocol, &efi_con_in);
1103 if (r != EFI_SUCCESS)
1105 systab.con_in_handle = console_input_handle;
1106 r = efi_add_protocol(console_input_handle,
1107 &efi_guid_text_input_ex_protocol, &efi_con_in_ex);
1108 if (r != EFI_SUCCESS)
1111 /* Create console events */
1112 r = efi_create_event(EVT_NOTIFY_WAIT, TPL_CALLBACK, efi_key_notify,
1113 NULL, NULL, &efi_con_in.wait_for_key);
1114 if (r != EFI_SUCCESS) {
1115 printf("ERROR: Failed to register WaitForKey event\n");
1118 efi_con_in_ex.wait_for_key_ex = efi_con_in.wait_for_key;
1119 r = efi_create_event(EVT_TIMER | EVT_NOTIFY_SIGNAL, TPL_CALLBACK,
1120 efi_console_timer_notify, NULL, NULL,
1121 &console_timer_event);
1122 if (r != EFI_SUCCESS) {
1123 printf("ERROR: Failed to register console event\n");
1126 /* 5000 ns cycle is sufficient for 2 MBaud */
1127 r = efi_set_timer(console_timer_event, EFI_TIMER_PERIODIC, 50);
1128 if (r != EFI_SUCCESS)
1129 printf("ERROR: Failed to set console timer\n");
1132 printf("ERROR: Out of memory\n");