blob: 21f353ffd3c76cdaf2aa1bdd3f7fc05a9faa62a2 [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Pali Roháre7abe912013-03-23 14:53:08 +00002/*
3 * (C) Copyright 2011-2013 Pali Rohár <pali.rohar@gmail.com>
Pali Roháre7abe912013-03-23 14:53:08 +00004 */
5
6#include <common.h>
7#include <command.h>
8#include <ansi.h>
9#include <menu.h>
Pali Roháre7abe912013-03-23 14:53:08 +000010#include <watchdog.h>
11#include <malloc.h>
12#include <linux/string.h>
13
14/* maximum bootmenu entries */
15#define MAX_COUNT 99
16
17/* maximal size of bootmenu env
18 * 9 = strlen("bootmenu_")
19 * 2 = strlen(MAX_COUNT)
20 * 1 = NULL term
21 */
22#define MAX_ENV_SIZE (9 + 2 + 1)
23
24struct bootmenu_entry {
25 unsigned short int num; /* unique number 0 .. MAX_COUNT */
26 char key[3]; /* key identifier of number */
27 char *title; /* title of entry */
28 char *command; /* hush command of entry */
29 struct bootmenu_data *menu; /* this bootmenu */
30 struct bootmenu_entry *next; /* next menu entry (num+1) */
31};
32
33struct bootmenu_data {
34 int delay; /* delay for autoboot */
35 int active; /* active menu entry */
36 int count; /* total count of menu entries */
37 struct bootmenu_entry *first; /* first menu entry */
38};
39
40enum bootmenu_key {
41 KEY_NONE = 0,
42 KEY_UP,
43 KEY_DOWN,
44 KEY_SELECT,
45};
46
47static char *bootmenu_getoption(unsigned short int n)
48{
Lan Yixun (dlan)0eb33ad2013-06-27 18:58:53 +080049 char name[MAX_ENV_SIZE];
Pali Roháre7abe912013-03-23 14:53:08 +000050
51 if (n > MAX_COUNT)
52 return NULL;
53
Lan Yixun (dlan)0eb33ad2013-06-27 18:58:53 +080054 sprintf(name, "bootmenu_%d", n);
Simon Glass00caae62017-08-03 12:22:12 -060055 return env_get(name);
Pali Roháre7abe912013-03-23 14:53:08 +000056}
57
58static void bootmenu_print_entry(void *data)
59{
60 struct bootmenu_entry *entry = data;
61 int reverse = (entry->menu->active == entry->num);
62
63 /*
64 * Move cursor to line where the entry will be drown (entry->num)
65 * First 3 lines contain bootmenu header + 1 empty line
66 */
67 printf(ANSI_CURSOR_POSITION, entry->num + 4, 1);
68
69 puts(" ");
70
71 if (reverse)
72 puts(ANSI_COLOR_REVERSE);
73
74 puts(entry->title);
75
76 if (reverse)
77 puts(ANSI_COLOR_RESET);
78}
79
80static void bootmenu_autoboot_loop(struct bootmenu_data *menu,
81 enum bootmenu_key *key, int *esc)
82{
83 int i, c;
84
85 if (menu->delay > 0) {
86 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
87 printf(" Hit any key to stop autoboot: %2d ", menu->delay);
88 }
89
90 while (menu->delay > 0) {
91 for (i = 0; i < 100; ++i) {
92 if (!tstc()) {
93 WATCHDOG_RESET();
94 mdelay(10);
95 continue;
96 }
97
98 menu->delay = -1;
99 c = getc();
100
101 switch (c) {
102 case '\e':
103 *esc = 1;
104 *key = KEY_NONE;
105 break;
106 case '\r':
107 *key = KEY_SELECT;
108 break;
109 default:
110 *key = KEY_NONE;
111 break;
112 }
113
114 break;
115 }
116
117 if (menu->delay < 0)
118 break;
119
120 --menu->delay;
121 printf("\b\b\b%2d ", menu->delay);
122 }
123
124 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
125 puts(ANSI_CLEAR_LINE);
126
127 if (menu->delay == 0)
128 *key = KEY_SELECT;
129}
130
131static void bootmenu_loop(struct bootmenu_data *menu,
132 enum bootmenu_key *key, int *esc)
133{
134 int c;
135
136 while (!tstc()) {
137 WATCHDOG_RESET();
138 mdelay(10);
139 }
140
141 c = getc();
142
143 switch (*esc) {
144 case 0:
145 /* First char of ANSI escape sequence '\e' */
146 if (c == '\e') {
147 *esc = 1;
148 *key = KEY_NONE;
149 }
150 break;
151 case 1:
152 /* Second char of ANSI '[' */
153 if (c == '[') {
154 *esc = 2;
155 *key = KEY_NONE;
156 } else {
157 *esc = 0;
158 }
159 break;
160 case 2:
161 case 3:
162 /* Third char of ANSI (number '1') - optional */
163 if (*esc == 2 && c == '1') {
164 *esc = 3;
165 *key = KEY_NONE;
166 break;
167 }
168
169 *esc = 0;
170
171 /* ANSI 'A' - key up was pressed */
172 if (c == 'A')
173 *key = KEY_UP;
174 /* ANSI 'B' - key down was pressed */
175 else if (c == 'B')
176 *key = KEY_DOWN;
177 /* other key was pressed */
178 else
179 *key = KEY_NONE;
180
181 break;
182 }
183
184 /* enter key was pressed */
185 if (c == '\r')
186 *key = KEY_SELECT;
187}
188
189static char *bootmenu_choice_entry(void *data)
190{
191 struct bootmenu_data *menu = data;
192 struct bootmenu_entry *iter;
193 enum bootmenu_key key = KEY_NONE;
194 int esc = 0;
195 int i;
196
197 while (1) {
198 if (menu->delay >= 0) {
199 /* Autoboot was not stopped */
200 bootmenu_autoboot_loop(menu, &key, &esc);
201 } else {
202 /* Some key was pressed, so autoboot was stopped */
203 bootmenu_loop(menu, &key, &esc);
204 }
205
206 switch (key) {
207 case KEY_UP:
208 if (menu->active > 0)
209 --menu->active;
210 /* no menu key selected, regenerate menu */
211 return NULL;
212 case KEY_DOWN:
213 if (menu->active < menu->count - 1)
214 ++menu->active;
215 /* no menu key selected, regenerate menu */
216 return NULL;
217 case KEY_SELECT:
218 iter = menu->first;
219 for (i = 0; i < menu->active; ++i)
220 iter = iter->next;
221 return iter->key;
222 default:
223 break;
224 }
225 }
226
227 /* never happens */
228 debug("bootmenu: this should not happen");
229 return NULL;
230}
231
232static void bootmenu_destroy(struct bootmenu_data *menu)
233{
234 struct bootmenu_entry *iter = menu->first;
235 struct bootmenu_entry *next;
236
237 while (iter) {
238 next = iter->next;
239 free(iter->title);
240 free(iter->command);
241 free(iter);
242 iter = next;
243 }
244 free(menu);
245}
246
247static struct bootmenu_data *bootmenu_create(int delay)
248{
249 unsigned short int i = 0;
250 const char *option;
251 struct bootmenu_data *menu;
252 struct bootmenu_entry *iter = NULL;
253
254 int len;
255 char *sep;
256 struct bootmenu_entry *entry;
257
258 menu = malloc(sizeof(struct bootmenu_data));
259 if (!menu)
260 return NULL;
261
262 menu->delay = delay;
263 menu->active = 0;
264 menu->first = NULL;
265
266 while ((option = bootmenu_getoption(i))) {
267 sep = strchr(option, '=');
268 if (!sep) {
269 printf("Invalid bootmenu entry: %s\n", option);
270 break;
271 }
272
273 entry = malloc(sizeof(struct bootmenu_entry));
274 if (!entry)
275 goto cleanup;
276
277 len = sep-option;
278 entry->title = malloc(len + 1);
279 if (!entry->title) {
280 free(entry);
281 goto cleanup;
282 }
283 memcpy(entry->title, option, len);
284 entry->title[len] = 0;
285
286 len = strlen(sep + 1);
287 entry->command = malloc(len + 1);
288 if (!entry->command) {
289 free(entry->title);
290 free(entry);
291 goto cleanup;
292 }
293 memcpy(entry->command, sep + 1, len);
294 entry->command[len] = 0;
295
296 sprintf(entry->key, "%d", i);
297
298 entry->num = i;
299 entry->menu = menu;
300 entry->next = NULL;
301
302 if (!iter)
303 menu->first = entry;
304 else
305 iter->next = entry;
306
307 iter = entry;
308 ++i;
309
310 if (i == MAX_COUNT - 1)
311 break;
312 }
313
314 /* Add U-Boot console entry at the end */
315 if (i <= MAX_COUNT - 1) {
316 entry = malloc(sizeof(struct bootmenu_entry));
317 if (!entry)
318 goto cleanup;
319
320 entry->title = strdup("U-Boot console");
321 if (!entry->title) {
322 free(entry);
323 goto cleanup;
324 }
325
326 entry->command = strdup("");
327 if (!entry->command) {
328 free(entry->title);
329 free(entry);
330 goto cleanup;
331 }
332
333 sprintf(entry->key, "%d", i);
334
335 entry->num = i;
336 entry->menu = menu;
337 entry->next = NULL;
338
339 if (!iter)
340 menu->first = entry;
341 else
342 iter->next = entry;
343
344 iter = entry;
345 ++i;
346 }
347
348 menu->count = i;
349 return menu;
350
351cleanup:
352 bootmenu_destroy(menu);
353 return NULL;
354}
355
356static void bootmenu_show(int delay)
357{
358 int init = 0;
359 void *choice = NULL;
360 char *title = NULL;
361 char *command = NULL;
362 struct menu *menu;
363 struct bootmenu_data *bootmenu;
364 struct bootmenu_entry *iter;
365 char *option, *sep;
366
367 /* If delay is 0 do not create menu, just run first entry */
368 if (delay == 0) {
369 option = bootmenu_getoption(0);
370 if (!option) {
371 puts("bootmenu option 0 was not found\n");
372 return;
373 }
374 sep = strchr(option, '=');
375 if (!sep) {
376 puts("bootmenu option 0 is invalid\n");
377 return;
378 }
379 run_command(sep+1, 0);
380 return;
381 }
382
383 bootmenu = bootmenu_create(delay);
384 if (!bootmenu)
385 return;
386
387 menu = menu_create(NULL, bootmenu->delay, 1, bootmenu_print_entry,
388 bootmenu_choice_entry, bootmenu);
389 if (!menu) {
390 bootmenu_destroy(bootmenu);
391 return;
392 }
393
394 for (iter = bootmenu->first; iter; iter = iter->next) {
395 if (!menu_item_add(menu, iter->key, iter))
396 goto cleanup;
397 }
398
399 /* Default menu entry is always first */
400 menu_default_set(menu, "0");
401
402 puts(ANSI_CURSOR_HIDE);
403 puts(ANSI_CLEAR_CONSOLE);
404 printf(ANSI_CURSOR_POSITION, 1, 1);
405
406 init = 1;
407
408 if (menu_get_choice(menu, &choice)) {
409 iter = choice;
410 title = strdup(iter->title);
411 command = strdup(iter->command);
412 }
413
414cleanup:
415 menu_destroy(menu);
416 bootmenu_destroy(bootmenu);
417
418 if (init) {
419 puts(ANSI_CURSOR_SHOW);
420 puts(ANSI_CLEAR_CONSOLE);
421 printf(ANSI_CURSOR_POSITION, 1, 1);
422 }
423
424 if (title && command) {
425 debug("Starting entry '%s'\n", title);
426 free(title);
427 run_command(command, 0);
428 free(command);
429 }
430
431#ifdef CONFIG_POSTBOOTMENU
432 run_command(CONFIG_POSTBOOTMENU, 0);
433#endif
434}
435
436void menu_display_statusline(struct menu *m)
437{
438 struct bootmenu_entry *entry;
439 struct bootmenu_data *menu;
440
441 if (menu_default_choice(m, (void *)&entry) < 0)
442 return;
443
444 menu = entry->menu;
445
446 printf(ANSI_CURSOR_POSITION, 1, 1);
447 puts(ANSI_CLEAR_LINE);
448 printf(ANSI_CURSOR_POSITION, 2, 1);
449 puts(" *** U-Boot Boot Menu ***");
450 puts(ANSI_CLEAR_LINE_TO_END);
451 printf(ANSI_CURSOR_POSITION, 3, 1);
452 puts(ANSI_CLEAR_LINE);
453
454 /* First 3 lines are bootmenu header + 2 empty lines between entries */
455 printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
456 puts(ANSI_CLEAR_LINE);
457 printf(ANSI_CURSOR_POSITION, menu->count + 6, 1);
458 puts(" Press UP/DOWN to move, ENTER to select");
459 puts(ANSI_CLEAR_LINE_TO_END);
460 printf(ANSI_CURSOR_POSITION, menu->count + 7, 1);
461 puts(ANSI_CLEAR_LINE);
462}
463
464#ifdef CONFIG_MENU_SHOW
465int menu_show(int bootdelay)
466{
467 bootmenu_show(bootdelay);
468 return -1; /* -1 - abort boot and run monitor code */
469}
470#endif
471
472int do_bootmenu(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
473{
474 char *delay_str = NULL;
475 int delay = 10;
476
477#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
478 delay = CONFIG_BOOTDELAY;
479#endif
480
481 if (argc >= 2)
482 delay_str = argv[1];
483
484 if (!delay_str)
Simon Glass00caae62017-08-03 12:22:12 -0600485 delay_str = env_get("bootmenu_delay");
Pali Roháre7abe912013-03-23 14:53:08 +0000486
487 if (delay_str)
488 delay = (int)simple_strtol(delay_str, NULL, 10);
489
490 bootmenu_show(delay);
491 return 0;
492}
493
494U_BOOT_CMD(
495 bootmenu, 2, 1, do_bootmenu,
496 "ANSI terminal bootmenu",
497 "[delay]\n"
498 " - show ANSI terminal bootmenu with autoboot delay"
499);