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1 /*
2 * (C) Copyright 2011-2013 Pali Rohár <pali.rohar@gmail.com>
3 *
4 * SPDX-License-Identifier: GPL-2.0+
5 */
6
7 #include <common.h>
8 #include <command.h>
9 #include <ansi.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
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 getenv(name);
57 }
58
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
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
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
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
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
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 struct bootmenu_entry *entry;
258
259 menu = malloc(sizeof(struct bootmenu_data));
260 if (!menu)
261 return NULL;
262
263 menu->delay = delay;
264 menu->active = 0;
265 menu->first = NULL;
266
267 while ((option = bootmenu_getoption(i))) {
268 sep = strchr(option, '=');
269 if (!sep) {
270 printf("Invalid bootmenu entry: %s\n", option);
271 break;
272 }
273
274 entry = malloc(sizeof(struct bootmenu_entry));
275 if (!entry)
276 goto cleanup;
277
278 len = sep-option;
279 entry->title = malloc(len + 1);
280 if (!entry->title) {
281 free(entry);
282 goto cleanup;
283 }
284 memcpy(entry->title, option, len);
285 entry->title[len] = 0;
286
287 len = strlen(sep + 1);
288 entry->command = malloc(len + 1);
289 if (!entry->command) {
290 free(entry->title);
291 free(entry);
292 goto cleanup;
293 }
294 memcpy(entry->command, sep + 1, len);
295 entry->command[len] = 0;
296
297 sprintf(entry->key, "%d", i);
298
299 entry->num = i;
300 entry->menu = menu;
301 entry->next = NULL;
302
303 if (!iter)
304 menu->first = entry;
305 else
306 iter->next = entry;
307
308 iter = entry;
309 ++i;
310
311 if (i == MAX_COUNT - 1)
312 break;
313 }
314
315 /* Add U-Boot console entry at the end */
316 if (i <= MAX_COUNT - 1) {
317 entry = malloc(sizeof(struct bootmenu_entry));
318 if (!entry)
319 goto cleanup;
320
321 entry->title = strdup("U-Boot console");
322 if (!entry->title) {
323 free(entry);
324 goto cleanup;
325 }
326
327 entry->command = strdup("");
328 if (!entry->command) {
329 free(entry->title);
330 free(entry);
331 goto cleanup;
332 }
333
334 sprintf(entry->key, "%d", i);
335
336 entry->num = i;
337 entry->menu = menu;
338 entry->next = NULL;
339
340 if (!iter)
341 menu->first = entry;
342 else
343 iter->next = entry;
344
345 iter = entry;
346 ++i;
347 }
348
349 menu->count = i;
350 return menu;
351
352 cleanup:
353 bootmenu_destroy(menu);
354 return NULL;
355 }
356
357 static void bootmenu_show(int delay)
358 {
359 int init = 0;
360 void *choice = NULL;
361 char *title = NULL;
362 char *command = NULL;
363 struct menu *menu;
364 struct bootmenu_data *bootmenu;
365 struct bootmenu_entry *iter;
366 char *option, *sep;
367
368 /* If delay is 0 do not create menu, just run first entry */
369 if (delay == 0) {
370 option = bootmenu_getoption(0);
371 if (!option) {
372 puts("bootmenu option 0 was not found\n");
373 return;
374 }
375 sep = strchr(option, '=');
376 if (!sep) {
377 puts("bootmenu option 0 is invalid\n");
378 return;
379 }
380 run_command(sep+1, 0);
381 return;
382 }
383
384 bootmenu = bootmenu_create(delay);
385 if (!bootmenu)
386 return;
387
388 menu = menu_create(NULL, bootmenu->delay, 1, bootmenu_print_entry,
389 bootmenu_choice_entry, bootmenu);
390 if (!menu) {
391 bootmenu_destroy(bootmenu);
392 return;
393 }
394
395 for (iter = bootmenu->first; iter; iter = iter->next) {
396 if (!menu_item_add(menu, iter->key, iter))
397 goto cleanup;
398 }
399
400 /* Default menu entry is always first */
401 menu_default_set(menu, "0");
402
403 puts(ANSI_CURSOR_HIDE);
404 puts(ANSI_CLEAR_CONSOLE);
405 printf(ANSI_CURSOR_POSITION, 1, 1);
406
407 init = 1;
408
409 if (menu_get_choice(menu, &choice)) {
410 iter = choice;
411 title = strdup(iter->title);
412 command = strdup(iter->command);
413 }
414
415 cleanup:
416 menu_destroy(menu);
417 bootmenu_destroy(bootmenu);
418
419 if (init) {
420 puts(ANSI_CURSOR_SHOW);
421 puts(ANSI_CLEAR_CONSOLE);
422 printf(ANSI_CURSOR_POSITION, 1, 1);
423 }
424
425 if (title && command) {
426 debug("Starting entry '%s'\n", title);
427 free(title);
428 run_command(command, 0);
429 free(command);
430 }
431
432 #ifdef CONFIG_POSTBOOTMENU
433 run_command(CONFIG_POSTBOOTMENU, 0);
434 #endif
435 }
436
437 void menu_display_statusline(struct menu *m)
438 {
439 struct bootmenu_entry *entry;
440 struct bootmenu_data *menu;
441
442 if (menu_default_choice(m, (void *)&entry) < 0)
443 return;
444
445 menu = entry->menu;
446
447 printf(ANSI_CURSOR_POSITION, 1, 1);
448 puts(ANSI_CLEAR_LINE);
449 printf(ANSI_CURSOR_POSITION, 2, 1);
450 puts(" *** U-Boot Boot Menu ***");
451 puts(ANSI_CLEAR_LINE_TO_END);
452 printf(ANSI_CURSOR_POSITION, 3, 1);
453 puts(ANSI_CLEAR_LINE);
454
455 /* First 3 lines are bootmenu header + 2 empty lines between entries */
456 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
457 puts(ANSI_CLEAR_LINE);
458 printf(ANSI_CURSOR_POSITION, menu->count + 6, 1);
459 puts(" Press UP/DOWN to move, ENTER to select");
460 puts(ANSI_CLEAR_LINE_TO_END);
461 printf(ANSI_CURSOR_POSITION, menu->count + 7, 1);
462 puts(ANSI_CLEAR_LINE);
463 }
464
465 #ifdef CONFIG_MENU_SHOW
466 int menu_show(int bootdelay)
467 {
468 bootmenu_show(bootdelay);
469 return -1; /* -1 - abort boot and run monitor code */
470 }
471 #endif
472
473 int do_bootmenu(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
474 {
475 char *delay_str = NULL;
476 int delay = 10;
477
478 #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
479 delay = CONFIG_BOOTDELAY;
480 #endif
481
482 if (argc >= 2)
483 delay_str = argv[1];
484
485 if (!delay_str)
486 delay_str = getenv("bootmenu_delay");
487
488 if (delay_str)
489 delay = (int)simple_strtol(delay_str, NULL, 10);
490
491 bootmenu_show(delay);
492 return 0;
493 }
494
495 U_BOOT_CMD(
496 bootmenu, 2, 1, do_bootmenu,
497 "ANSI terminal bootmenu",
498 "[delay]\n"
499 " - show ANSI terminal bootmenu with autoboot delay"
500 );