1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2011-2013 Pali Rohár <pali.rohar@gmail.com>
4 */
5
6 #include <common.h>
7 #include <command.h>
8 #include <ansi.h>
9 #include <env.h>
10 #include <menu.h>
11 #include <watchdog.h>
12 #include <malloc.h>
13 #include <linux/string.h>
14
15 /* maximum bootmenu entries */
16 #define MAX_COUNT 99
17
18 /* maximal size of bootmenu env
19 * 9 = strlen("bootmenu_")
20 * 2 = strlen(MAX_COUNT)
21 * 1 = NULL term
22 */
23 #define MAX_ENV_SIZE (9 + 2 + 1)
24
25 struct bootmenu_entry {
26 unsigned short int num; /* unique number 0 .. MAX_COUNT */
27 char key[3]; /* key identifier of number */
28 char *title; /* title of entry */
29 char *command; /* hush command of entry */
30 struct bootmenu_data *menu; /* this bootmenu */
31 struct bootmenu_entry *next; /* next menu entry (num+1) */
32 };
33
34 struct bootmenu_data {
35 int delay; /* delay for autoboot */
36 int active; /* active menu entry */
37 int count; /* total count of menu entries */
38 struct bootmenu_entry *first; /* first menu entry */
39 };
40
41 enum bootmenu_key {
42 KEY_NONE = 0,
43 KEY_UP,
44 KEY_DOWN,
45 KEY_SELECT,
46 };
47
bootmenu_getoption(unsigned short int n)48 static char *bootmenu_getoption(unsigned short int n)
49 {
50 char name[MAX_ENV_SIZE];
51
52 if (n > MAX_COUNT)
53 return NULL;
54
55 sprintf(name, "bootmenu_%d", n);
56 return env_get(name);
57 }
58
bootmenu_print_entry(void * data)59 static void bootmenu_print_entry(void *data)
60 {
61 struct bootmenu_entry *entry = data;
62 int reverse = (entry->menu->active == entry->num);
63
64 /*
65 * Move cursor to line where the entry will be drown (entry->num)
66 * First 3 lines contain bootmenu header + 1 empty line
67 */
68 printf(ANSI_CURSOR_POSITION, entry->num + 4, 1);
69
70 puts(" ");
71
72 if (reverse)
73 puts(ANSI_COLOR_REVERSE);
74
75 puts(entry->title);
76
77 if (reverse)
78 puts(ANSI_COLOR_RESET);
79 }
80
bootmenu_autoboot_loop(struct bootmenu_data * menu,enum bootmenu_key * key,int * esc)81 static void bootmenu_autoboot_loop(struct bootmenu_data *menu,
82 enum bootmenu_key *key, int *esc)
83 {
84 int i, c;
85
86 if (menu->delay > 0) {
87 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
88 printf(" Hit any key to stop autoboot: %2d ", menu->delay);
89 }
90
91 while (menu->delay > 0) {
92 for (i = 0; i < 100; ++i) {
93 if (!tstc()) {
94 WATCHDOG_RESET();
95 mdelay(10);
96 continue;
97 }
98
99 menu->delay = -1;
100 c = getc();
101
102 switch (c) {
103 case '\e':
104 *esc = 1;
105 *key = KEY_NONE;
106 break;
107 case '\r':
108 *key = KEY_SELECT;
109 break;
110 default:
111 *key = KEY_NONE;
112 break;
113 }
114
115 break;
116 }
117
118 if (menu->delay < 0)
119 break;
120
121 --menu->delay;
122 printf("\b\b\b%2d ", menu->delay);
123 }
124
125 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
126 puts(ANSI_CLEAR_LINE);
127
128 if (menu->delay == 0)
129 *key = KEY_SELECT;
130 }
131
bootmenu_loop(struct bootmenu_data * menu,enum bootmenu_key * key,int * esc)132 static void bootmenu_loop(struct bootmenu_data *menu,
133 enum bootmenu_key *key, int *esc)
134 {
135 int c;
136
137 while (!tstc()) {
138 WATCHDOG_RESET();
139 mdelay(10);
140 }
141
142 c = getc();
143
144 switch (*esc) {
145 case 0:
146 /* First char of ANSI escape sequence '\e' */
147 if (c == '\e') {
148 *esc = 1;
149 *key = KEY_NONE;
150 }
151 break;
152 case 1:
153 /* Second char of ANSI '[' */
154 if (c == '[') {
155 *esc = 2;
156 *key = KEY_NONE;
157 } else {
158 *esc = 0;
159 }
160 break;
161 case 2:
162 case 3:
163 /* Third char of ANSI (number '1') - optional */
164 if (*esc == 2 && c == '1') {
165 *esc = 3;
166 *key = KEY_NONE;
167 break;
168 }
169
170 *esc = 0;
171
172 /* ANSI 'A' - key up was pressed */
173 if (c == 'A')
174 *key = KEY_UP;
175 /* ANSI 'B' - key down was pressed */
176 else if (c == 'B')
177 *key = KEY_DOWN;
178 /* other key was pressed */
179 else
180 *key = KEY_NONE;
181
182 break;
183 }
184
185 /* enter key was pressed */
186 if (c == '\r')
187 *key = KEY_SELECT;
188 }
189
bootmenu_choice_entry(void * data)190 static char *bootmenu_choice_entry(void *data)
191 {
192 struct bootmenu_data *menu = data;
193 struct bootmenu_entry *iter;
194 enum bootmenu_key key = KEY_NONE;
195 int esc = 0;
196 int i;
197
198 while (1) {
199 if (menu->delay >= 0) {
200 /* Autoboot was not stopped */
201 bootmenu_autoboot_loop(menu, &key, &esc);
202 } else {
203 /* Some key was pressed, so autoboot was stopped */
204 bootmenu_loop(menu, &key, &esc);
205 }
206
207 switch (key) {
208 case KEY_UP:
209 if (menu->active > 0)
210 --menu->active;
211 /* no menu key selected, regenerate menu */
212 return NULL;
213 case KEY_DOWN:
214 if (menu->active < menu->count - 1)
215 ++menu->active;
216 /* no menu key selected, regenerate menu */
217 return NULL;
218 case KEY_SELECT:
219 iter = menu->first;
220 for (i = 0; i < menu->active; ++i)
221 iter = iter->next;
222 return iter->key;
223 default:
224 break;
225 }
226 }
227
228 /* never happens */
229 debug("bootmenu: this should not happen");
230 return NULL;
231 }
232
bootmenu_destroy(struct bootmenu_data * menu)233 static void bootmenu_destroy(struct bootmenu_data *menu)
234 {
235 struct bootmenu_entry *iter = menu->first;
236 struct bootmenu_entry *next;
237
238 while (iter) {
239 next = iter->next;
240 free(iter->title);
241 free(iter->command);
242 free(iter);
243 iter = next;
244 }
245 free(menu);
246 }
247
bootmenu_create(int delay)248 static struct bootmenu_data *bootmenu_create(int delay)
249 {
250 unsigned short int i = 0;
251 const char *option;
252 struct bootmenu_data *menu;
253 struct bootmenu_entry *iter = NULL;
254
255 int len;
256 char *sep;
257 char *default_str;
258 struct bootmenu_entry *entry;
259
260 menu = malloc(sizeof(struct bootmenu_data));
261 if (!menu)
262 return NULL;
263
264 menu->delay = delay;
265 menu->active = 0;
266 menu->first = NULL;
267
268 default_str = env_get("bootmenu_default");
269 if (default_str)
270 menu->active = (int)simple_strtol(default_str, NULL, 10);
271
272 while ((option = bootmenu_getoption(i))) {
273 sep = strchr(option, '=');
274 if (!sep) {
275 printf("Invalid bootmenu entry: %s\n", option);
276 break;
277 }
278
279 entry = malloc(sizeof(struct bootmenu_entry));
280 if (!entry)
281 goto cleanup;
282
283 len = sep-option;
284 entry->title = malloc(len + 1);
285 if (!entry->title) {
286 free(entry);
287 goto cleanup;
288 }
289 memcpy(entry->title, option, len);
290 entry->title[len] = 0;
291
292 len = strlen(sep + 1);
293 entry->command = malloc(len + 1);
294 if (!entry->command) {
295 free(entry->title);
296 free(entry);
297 goto cleanup;
298 }
299 memcpy(entry->command, sep + 1, len);
300 entry->command[len] = 0;
301
302 sprintf(entry->key, "%d", i);
303
304 entry->num = i;
305 entry->menu = menu;
306 entry->next = NULL;
307
308 if (!iter)
309 menu->first = entry;
310 else
311 iter->next = entry;
312
313 iter = entry;
314 ++i;
315
316 if (i == MAX_COUNT - 1)
317 break;
318 }
319
320 /* Add U-Boot console entry at the end */
321 if (i <= MAX_COUNT - 1) {
322 entry = malloc(sizeof(struct bootmenu_entry));
323 if (!entry)
324 goto cleanup;
325
326 entry->title = strdup("U-Boot console");
327 if (!entry->title) {
328 free(entry);
329 goto cleanup;
330 }
331
332 entry->command = strdup("");
333 if (!entry->command) {
334 free(entry->title);
335 free(entry);
336 goto cleanup;
337 }
338
339 sprintf(entry->key, "%d", i);
340
341 entry->num = i;
342 entry->menu = menu;
343 entry->next = NULL;
344
345 if (!iter)
346 menu->first = entry;
347 else
348 iter->next = entry;
349
350 iter = entry;
351 ++i;
352 }
353
354 menu->count = i;
355
356 if ((menu->active >= menu->count)||(menu->active < 0)) { //ensure active menuitem is inside menu
357 printf("active menuitem (%d) is outside menu (0..%d)\n",menu->active,menu->count-1);
358 menu->active=0;
359 }
360
361 return menu;
362
363 cleanup:
364 bootmenu_destroy(menu);
365 return NULL;
366 }
367
bootmenu_show(int delay)368 static void bootmenu_show(int delay)
369 {
370 int init = 0;
371 void *choice = NULL;
372 char *title = NULL;
373 char *command = NULL;
374 struct menu *menu;
375 struct bootmenu_data *bootmenu;
376 struct bootmenu_entry *iter;
377 char *option, *sep;
378
379 /* If delay is 0 do not create menu, just run first entry */
380 if (delay == 0) {
381 option = bootmenu_getoption(0);
382 if (!option) {
383 puts("bootmenu option 0 was not found\n");
384 return;
385 }
386 sep = strchr(option, '=');
387 if (!sep) {
388 puts("bootmenu option 0 is invalid\n");
389 return;
390 }
391 run_command(sep+1, 0);
392 return;
393 }
394
395 bootmenu = bootmenu_create(delay);
396 if (!bootmenu)
397 return;
398
399 menu = menu_create(NULL, bootmenu->delay, 1, bootmenu_print_entry,
400 bootmenu_choice_entry, bootmenu);
401 if (!menu) {
402 bootmenu_destroy(bootmenu);
403 return;
404 }
405
406 for (iter = bootmenu->first; iter; iter = iter->next) {
407 if (!menu_item_add(menu, iter->key, iter))
408 goto cleanup;
409 }
410
411 /* Default menu entry is always first */
412 menu_default_set(menu, "0");
413
414 puts(ANSI_CURSOR_HIDE);
415 puts(ANSI_CLEAR_CONSOLE);
416 printf(ANSI_CURSOR_POSITION, 1, 1);
417
418 init = 1;
419
420 if (menu_get_choice(menu, &choice)) {
421 iter = choice;
422 title = strdup(iter->title);
423 command = strdup(iter->command);
424 }
425
426 cleanup:
427 menu_destroy(menu);
428 bootmenu_destroy(bootmenu);
429
430 if (init) {
431 puts(ANSI_CURSOR_SHOW);
432 puts(ANSI_CLEAR_CONSOLE);
433 printf(ANSI_CURSOR_POSITION, 1, 1);
434 }
435
436 if (title && command) {
437 debug("Starting entry '%s'\n", title);
438 free(title);
439 run_command(command, 0);
440 free(command);
441 }
442
443 #ifdef CONFIG_POSTBOOTMENU
444 run_command(CONFIG_POSTBOOTMENU, 0);
445 #endif
446 }
447
menu_display_statusline(struct menu * m)448 void menu_display_statusline(struct menu *m)
449 {
450 struct bootmenu_entry *entry;
451 struct bootmenu_data *menu;
452
453 if (menu_default_choice(m, (void *)&entry) < 0)
454 return;
455
456 menu = entry->menu;
457
458 printf(ANSI_CURSOR_POSITION, 1, 1);
459 puts(ANSI_CLEAR_LINE);
460 printf(ANSI_CURSOR_POSITION, 2, 1);
461 puts(" *** U-Boot Boot Menu ***");
462 puts(ANSI_CLEAR_LINE_TO_END);
463 printf(ANSI_CURSOR_POSITION, 3, 1);
464 puts(ANSI_CLEAR_LINE);
465
466 /* First 3 lines are bootmenu header + 2 empty lines between entries */
467 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
468 puts(ANSI_CLEAR_LINE);
469 printf(ANSI_CURSOR_POSITION, menu->count + 6, 1);
470 puts(" Press UP/DOWN to move, ENTER to select");
471 puts(ANSI_CLEAR_LINE_TO_END);
472 printf(ANSI_CURSOR_POSITION, menu->count + 7, 1);
473 puts(ANSI_CLEAR_LINE);
474 }
475
476 #ifdef CONFIG_AUTOBOOT_MENU_SHOW
menu_show(int bootdelay)477 int menu_show(int bootdelay)
478 {
479 bootmenu_show(bootdelay);
480 return -1; /* -1 - abort boot and run monitor code */
481 }
482 #endif
483
do_bootmenu(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])484 int do_bootmenu(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
485 {
486 char *delay_str = NULL;
487 int delay = 10;
488
489 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
490 delay = CONFIG_BOOTDELAY;
491 #endif
492
493 if (argc >= 2)
494 delay_str = argv[1];
495
496 if (!delay_str)
497 delay_str = env_get("bootmenu_delay");
498
499 if (delay_str)
500 delay = (int)simple_strtol(delay_str, NULL, 10);
501
502 bootmenu_show(delay);
503 return 0;
504 }
505
506 U_BOOT_CMD(
507 bootmenu, 2, 1, do_bootmenu,
508 "ANSI terminal bootmenu",
509 "[delay]\n"
510 " - show ANSI terminal bootmenu with autoboot delay"
511 );
512