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1 | /* | |
2 | * (C) Copyright 2000 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <bootretry.h> | |
10 | #include <cli.h> | |
11 | #include <fdtdec.h> | |
12 | #include <menu.h> | |
13 | #include <post.h> | |
14 | ||
15 | DECLARE_GLOBAL_DATA_PTR; | |
16 | ||
17 | #define MAX_DELAY_STOP_STR 32 | |
18 | ||
19 | #ifndef DEBUG_BOOTKEYS | |
20 | #define DEBUG_BOOTKEYS 0 | |
21 | #endif | |
22 | #define debug_bootkeys(fmt, args...) \ | |
23 | debug_cond(DEBUG_BOOTKEYS, fmt, ##args) | |
24 | ||
25 | /* Stored value of bootdelay, used by autoboot_command() */ | |
26 | static int stored_bootdelay; | |
27 | ||
28 | /*************************************************************************** | |
29 | * Watch for 'delay' seconds for autoboot stop or autoboot delay string. | |
30 | * returns: 0 - no key string, allow autoboot 1 - got key string, abort | |
31 | */ | |
32 | # if defined(CONFIG_AUTOBOOT_KEYED) | |
33 | static int abortboot_keyed(int bootdelay) | |
34 | { | |
35 | int abort = 0; | |
36 | uint64_t etime = endtick(bootdelay); | |
37 | struct { | |
38 | char *str; | |
39 | u_int len; | |
40 | int retry; | |
41 | } | |
42 | delaykey[] = { | |
43 | { .str = getenv("bootdelaykey"), .retry = 1 }, | |
44 | { .str = getenv("bootdelaykey2"), .retry = 1 }, | |
45 | { .str = getenv("bootstopkey"), .retry = 0 }, | |
46 | { .str = getenv("bootstopkey2"), .retry = 0 }, | |
47 | }; | |
48 | ||
49 | char presskey[MAX_DELAY_STOP_STR]; | |
50 | u_int presskey_len = 0; | |
51 | u_int presskey_max = 0; | |
52 | u_int i; | |
53 | ||
54 | #ifndef CONFIG_ZERO_BOOTDELAY_CHECK | |
55 | if (bootdelay == 0) | |
56 | return 0; | |
57 | #endif | |
58 | ||
59 | # ifdef CONFIG_AUTOBOOT_PROMPT | |
60 | printf(CONFIG_AUTOBOOT_PROMPT); | |
61 | # endif | |
62 | ||
63 | # ifdef CONFIG_AUTOBOOT_DELAY_STR | |
64 | if (delaykey[0].str == NULL) | |
65 | delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR; | |
66 | # endif | |
67 | # ifdef CONFIG_AUTOBOOT_DELAY_STR2 | |
68 | if (delaykey[1].str == NULL) | |
69 | delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2; | |
70 | # endif | |
71 | # ifdef CONFIG_AUTOBOOT_STOP_STR | |
72 | if (delaykey[2].str == NULL) | |
73 | delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR; | |
74 | # endif | |
75 | # ifdef CONFIG_AUTOBOOT_STOP_STR2 | |
76 | if (delaykey[3].str == NULL) | |
77 | delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2; | |
78 | # endif | |
79 | ||
80 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) { | |
81 | delaykey[i].len = delaykey[i].str == NULL ? | |
82 | 0 : strlen(delaykey[i].str); | |
83 | delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ? | |
84 | MAX_DELAY_STOP_STR : delaykey[i].len; | |
85 | ||
86 | presskey_max = presskey_max > delaykey[i].len ? | |
87 | presskey_max : delaykey[i].len; | |
88 | ||
89 | debug_bootkeys("%s key:<%s>\n", | |
90 | delaykey[i].retry ? "delay" : "stop", | |
91 | delaykey[i].str ? delaykey[i].str : "NULL"); | |
92 | } | |
93 | ||
94 | /* In order to keep up with incoming data, check timeout only | |
95 | * when catch up. | |
96 | */ | |
97 | do { | |
98 | if (tstc()) { | |
99 | if (presskey_len < presskey_max) { | |
100 | presskey[presskey_len++] = getc(); | |
101 | } else { | |
102 | for (i = 0; i < presskey_max - 1; i++) | |
103 | presskey[i] = presskey[i + 1]; | |
104 | ||
105 | presskey[i] = getc(); | |
106 | } | |
107 | } | |
108 | ||
109 | for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) { | |
110 | if (delaykey[i].len > 0 && | |
111 | presskey_len >= delaykey[i].len && | |
112 | memcmp(presskey + presskey_len - | |
113 | delaykey[i].len, delaykey[i].str, | |
114 | delaykey[i].len) == 0) { | |
115 | debug_bootkeys("got %skey\n", | |
116 | delaykey[i].retry ? "delay" : | |
117 | "stop"); | |
118 | ||
119 | /* don't retry auto boot */ | |
120 | if (!delaykey[i].retry) | |
121 | bootretry_dont_retry(); | |
122 | abort = 1; | |
123 | } | |
124 | } | |
125 | } while (!abort && get_ticks() <= etime); | |
126 | ||
127 | if (!abort) | |
128 | debug_bootkeys("key timeout\n"); | |
129 | ||
130 | #ifdef CONFIG_SILENT_CONSOLE | |
131 | if (abort) | |
132 | gd->flags &= ~GD_FLG_SILENT; | |
133 | #endif | |
134 | ||
135 | return abort; | |
136 | } | |
137 | ||
138 | # else /* !defined(CONFIG_AUTOBOOT_KEYED) */ | |
139 | ||
140 | #ifdef CONFIG_MENUKEY | |
141 | static int menukey; | |
142 | #endif | |
143 | ||
144 | static int abortboot_normal(int bootdelay) | |
145 | { | |
146 | int abort = 0; | |
147 | unsigned long ts; | |
148 | ||
149 | #ifdef CONFIG_MENUPROMPT | |
150 | printf(CONFIG_MENUPROMPT); | |
151 | #else | |
152 | if (bootdelay >= 0) | |
153 | printf("Hit any key to stop autoboot: %2d ", bootdelay); | |
154 | #endif | |
155 | ||
156 | #if defined CONFIG_ZERO_BOOTDELAY_CHECK | |
157 | /* | |
158 | * Check if key already pressed | |
159 | * Don't check if bootdelay < 0 | |
160 | */ | |
161 | if (bootdelay >= 0) { | |
162 | if (tstc()) { /* we got a key press */ | |
163 | (void) getc(); /* consume input */ | |
164 | puts("\b\b\b 0"); | |
165 | abort = 1; /* don't auto boot */ | |
166 | } | |
167 | } | |
168 | #endif | |
169 | ||
170 | while ((bootdelay > 0) && (!abort)) { | |
171 | --bootdelay; | |
172 | /* delay 1000 ms */ | |
173 | ts = get_timer(0); | |
174 | do { | |
175 | if (tstc()) { /* we got a key press */ | |
176 | abort = 1; /* don't auto boot */ | |
177 | bootdelay = 0; /* no more delay */ | |
178 | # ifdef CONFIG_MENUKEY | |
179 | menukey = getc(); | |
180 | # else | |
181 | (void) getc(); /* consume input */ | |
182 | # endif | |
183 | break; | |
184 | } | |
185 | udelay(10000); | |
186 | } while (!abort && get_timer(ts) < 1000); | |
187 | ||
188 | printf("\b\b\b%2d ", bootdelay); | |
189 | } | |
190 | ||
191 | putc('\n'); | |
192 | ||
193 | #ifdef CONFIG_SILENT_CONSOLE | |
194 | if (abort) | |
195 | gd->flags &= ~GD_FLG_SILENT; | |
196 | #endif | |
197 | ||
198 | return abort; | |
199 | } | |
200 | # endif /* CONFIG_AUTOBOOT_KEYED */ | |
201 | ||
202 | static int abortboot(int bootdelay) | |
203 | { | |
204 | #ifdef CONFIG_AUTOBOOT_KEYED | |
205 | return abortboot_keyed(bootdelay); | |
206 | #else | |
207 | return abortboot_normal(bootdelay); | |
208 | #endif | |
209 | } | |
210 | ||
211 | static void process_fdt_options(const void *blob) | |
212 | { | |
213 | #if defined(CONFIG_OF_CONTROL) | |
214 | ulong addr; | |
215 | ||
216 | /* Add an env variable to point to a kernel payload, if available */ | |
217 | addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0); | |
218 | if (addr) | |
219 | setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); | |
220 | ||
221 | /* Add an env variable to point to a root disk, if available */ | |
222 | addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0); | |
223 | if (addr) | |
224 | setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr)); | |
225 | #endif /* CONFIG_OF_CONTROL */ | |
226 | } | |
227 | ||
228 | const char *bootdelay_process(void) | |
229 | { | |
230 | char *s; | |
231 | int bootdelay; | |
232 | #ifdef CONFIG_BOOTCOUNT_LIMIT | |
233 | unsigned long bootcount = 0; | |
234 | unsigned long bootlimit = 0; | |
235 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
236 | ||
237 | #ifdef CONFIG_BOOTCOUNT_LIMIT | |
238 | bootcount = bootcount_load(); | |
239 | bootcount++; | |
240 | bootcount_store(bootcount); | |
241 | setenv_ulong("bootcount", bootcount); | |
242 | bootlimit = getenv_ulong("bootlimit", 10, 0); | |
243 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
244 | ||
245 | s = getenv("bootdelay"); | |
246 | bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY; | |
247 | ||
248 | #ifdef CONFIG_OF_CONTROL | |
249 | bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay", | |
250 | bootdelay); | |
251 | #endif | |
252 | ||
253 | debug("### main_loop entered: bootdelay=%d\n\n", bootdelay); | |
254 | ||
255 | #if defined(CONFIG_MENU_SHOW) | |
256 | bootdelay = menu_show(bootdelay); | |
257 | #endif | |
258 | bootretry_init_cmd_timeout(); | |
259 | ||
260 | #ifdef CONFIG_POST | |
261 | if (gd->flags & GD_FLG_POSTFAIL) { | |
262 | s = getenv("failbootcmd"); | |
263 | } else | |
264 | #endif /* CONFIG_POST */ | |
265 | #ifdef CONFIG_BOOTCOUNT_LIMIT | |
266 | if (bootlimit && (bootcount > bootlimit)) { | |
267 | printf("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n", | |
268 | (unsigned)bootlimit); | |
269 | s = getenv("altbootcmd"); | |
270 | } else | |
271 | #endif /* CONFIG_BOOTCOUNT_LIMIT */ | |
272 | s = getenv("bootcmd"); | |
273 | ||
274 | process_fdt_options(gd->fdt_blob); | |
275 | stored_bootdelay = bootdelay; | |
276 | ||
277 | return s; | |
278 | } | |
279 | ||
280 | void autoboot_command(const char *s) | |
281 | { | |
282 | debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>"); | |
283 | ||
284 | if (stored_bootdelay != -1 && s && !abortboot(stored_bootdelay)) { | |
285 | #if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC) | |
286 | int prev = disable_ctrlc(1); /* disable Control C checking */ | |
287 | #endif | |
288 | ||
289 | run_command_list(s, -1, 0); | |
290 | ||
291 | #if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC) | |
292 | disable_ctrlc(prev); /* restore Control C checking */ | |
293 | #endif | |
294 | } | |
295 | ||
296 | #ifdef CONFIG_MENUKEY | |
297 | if (menukey == CONFIG_MENUKEY) { | |
298 | s = getenv("menucmd"); | |
299 | if (s) | |
300 | run_command_list(s, -1, 0); | |
301 | } | |
302 | #endif /* CONFIG_MENUKEY */ | |
303 | } |