[people/ms/u-boot.git] / common / autoboot.c

/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <cli.h>
#include <fdtdec.h>
#include <menu.h>
#include <post.h>

DECLARE_GLOBAL_DATA_PTR;

#define MAX_DELAY_STOP_STR 32

#ifndef DEBUG_BOOTKEYS
#define DEBUG_BOOTKEYS 0
#endif
#define debug_bootkeys(fmt, args...)		\
	debug_cond(DEBUG_BOOTKEYS, fmt, ##args)

/***************************************************************************
 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
 * returns: 0 -  no key string, allow autoboot 1 - got key string, abort
 */
# if defined(CONFIG_AUTOBOOT_KEYED)
static int abortboot_keyed(int bootdelay)
{
	int abort = 0;
	uint64_t etime = endtick(bootdelay);
	struct {
		char *str;
		u_int len;
		int retry;
	}
	delaykey[] = {
		{ str: getenv("bootdelaykey"),  retry: 1 },
		{ str: getenv("bootdelaykey2"), retry: 1 },
		{ str: getenv("bootstopkey"),   retry: 0 },
		{ str: getenv("bootstopkey2"),  retry: 0 },
	};

	char presskey[MAX_DELAY_STOP_STR];
	u_int presskey_len = 0;
	u_int presskey_max = 0;
	u_int i;

#ifndef CONFIG_ZERO_BOOTDELAY_CHECK
	if (bootdelay == 0)
		return 0;
#endif

#  ifdef CONFIG_AUTOBOOT_PROMPT
	printf(CONFIG_AUTOBOOT_PROMPT);
#  endif

#  ifdef CONFIG_AUTOBOOT_DELAY_STR
	if (delaykey[0].str == NULL)
		delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
#  endif
#  ifdef CONFIG_AUTOBOOT_DELAY_STR2
	if (delaykey[1].str == NULL)
		delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
#  endif
#  ifdef CONFIG_AUTOBOOT_STOP_STR
	if (delaykey[2].str == NULL)
		delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
#  endif
#  ifdef CONFIG_AUTOBOOT_STOP_STR2
	if (delaykey[3].str == NULL)
		delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
#  endif

	for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
		delaykey[i].len = delaykey[i].str == NULL ?
				    0 : strlen(delaykey[i].str);
		delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
				    MAX_DELAY_STOP_STR : delaykey[i].len;

		presskey_max = presskey_max > delaykey[i].len ?
				    presskey_max : delaykey[i].len;

		debug_bootkeys("%s key:<%s>\n",
			       delaykey[i].retry ? "delay" : "stop",
			       delaykey[i].str ? delaykey[i].str : "NULL");
	}

	/* In order to keep up with incoming data, check timeout only
	 * when catch up.
	 */
	do {
		if (tstc()) {
			if (presskey_len < presskey_max) {
				presskey[presskey_len++] = getc();
			} else {
				for (i = 0; i < presskey_max - 1; i++)
					presskey[i] = presskey[i + 1];

				presskey[i] = getc();
			}
		}

		for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
			if (delaykey[i].len > 0 &&
			    presskey_len >= delaykey[i].len &&
				memcmp(presskey + presskey_len -
					delaykey[i].len, delaykey[i].str,
					delaykey[i].len) == 0) {
					debug_bootkeys("got %skey\n",
						delaykey[i].retry ? "delay" :
						"stop");

#  ifdef CONFIG_BOOT_RETRY_TIME
				/* don't retry auto boot */
				if (!delaykey[i].retry)
					bootretry_dont_retry();
#  endif
				abort = 1;
			}
		}
	} while (!abort && get_ticks() <= etime);

	if (!abort)
		debug_bootkeys("key timeout\n");

#ifdef CONFIG_SILENT_CONSOLE
	if (abort)
		gd->flags &= ~GD_FLG_SILENT;
#endif

	return abort;
}

# else	/* !defined(CONFIG_AUTOBOOT_KEYED) */

#ifdef CONFIG_MENUKEY
static int menukey;
#endif

static int abortboot_normal(int bootdelay)
{
	int abort = 0;
	unsigned long ts;

#ifdef CONFIG_MENUPROMPT
	printf(CONFIG_MENUPROMPT);
#else
	if (bootdelay >= 0)
		printf("Hit any key to stop autoboot: %2d ", bootdelay);
#endif

#if defined CONFIG_ZERO_BOOTDELAY_CHECK
	/*
	 * Check if key already pressed
	 * Don't check if bootdelay < 0
	 */
	if (bootdelay >= 0) {
		if (tstc()) {	/* we got a key press	*/
			(void) getc();  /* consume input	*/
			puts("\b\b\b 0");
			abort = 1;	/* don't auto boot	*/
		}
	}
#endif

	while ((bootdelay > 0) && (!abort)) {
		--bootdelay;
		/* delay 1000 ms */
		ts = get_timer(0);
		do {
			if (tstc()) {	/* we got a key press	*/
				abort  = 1;	/* don't auto boot	*/
				bootdelay = 0;	/* no more delay	*/
# ifdef CONFIG_MENUKEY
				menukey = getc();
# else
				(void) getc();  /* consume input	*/
# endif
				break;
			}
			udelay(10000);
		} while (!abort && get_timer(ts) < 1000);

		printf("\b\b\b%2d ", bootdelay);
	}

	putc('\n');

#ifdef CONFIG_SILENT_CONSOLE
	if (abort)
		gd->flags &= ~GD_FLG_SILENT;
#endif

	return abort;
}
# endif	/* CONFIG_AUTOBOOT_KEYED */

static int abortboot(int bootdelay)
{
#ifdef CONFIG_AUTOBOOT_KEYED
	return abortboot_keyed(bootdelay);
#else
	return abortboot_normal(bootdelay);
#endif
}

/*
 * Runs the given boot command securely.  Specifically:
 * - Doesn't run the command with the shell (run_command or parse_string_outer),
 *   since that's a lot of code surface that an attacker might exploit.
 *   Because of this, we don't do any argument parsing--the secure boot command
 *   has to be a full-fledged u-boot command.
 * - Doesn't check for keypresses before booting, since that could be a
 *   security hole; also disables Ctrl-C.
 * - Doesn't allow the command to return.
 *
 * Upon any failures, this function will drop into an infinite loop after
 * printing the error message to console.
 */

#if defined(CONFIG_OF_CONTROL)
static void secure_boot_cmd(char *cmd)
{
	cmd_tbl_t *cmdtp;
	int rc;

	if (!cmd) {
		printf("## Error: Secure boot command not specified\n");
		goto err;
	}

	/* Disable Ctrl-C just in case some command is used that checks it. */
	disable_ctrlc(1);

	/* Find the command directly. */
	cmdtp = find_cmd(cmd);
	if (!cmdtp) {
		printf("## Error: \"%s\" not defined\n", cmd);
		goto err;
	}

	/* Run the command, forcing no flags and faking argc and argv. */
	rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd);

	/* Shouldn't ever return from boot command. */
	printf("## Error: \"%s\" returned (code %d)\n", cmd, rc);

err:
	/*
	 * Not a whole lot to do here.  Rebooting won't help much, since we'll
	 * just end up right back here.  Just loop.
	 */
	hang();
}

static void process_fdt_options(const void *blob)
{
	ulong addr;

	/* Add an env variable to point to a kernel payload, if available */
	addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0);
	if (addr)
		setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));

	/* Add an env variable to point to a root disk, if available */
	addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0);
	if (addr)
		setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
}
#endif /* CONFIG_OF_CONTROL */

void bootdelay_process(void)
{
#ifdef CONFIG_OF_CONTROL
	char *env;
#endif
	char *s;
	int bootdelay;
#ifdef CONFIG_BOOTCOUNT_LIMIT
	unsigned long bootcount = 0;
	unsigned long bootlimit = 0;
#endif /* CONFIG_BOOTCOUNT_LIMIT */

#ifdef CONFIG_BOOTCOUNT_LIMIT
	bootcount = bootcount_load();
	bootcount++;
	bootcount_store(bootcount);
	setenv_ulong("bootcount", bootcount);
	bootlimit = getenv_ulong("bootlimit", 10, 0);
#endif /* CONFIG_BOOTCOUNT_LIMIT */

	s = getenv("bootdelay");
	bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;

#ifdef CONFIG_OF_CONTROL
	bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
			bootdelay);
#endif

	debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);

#if defined(CONFIG_MENU_SHOW)
	bootdelay = menu_show(bootdelay);
#endif
# ifdef CONFIG_BOOT_RETRY_TIME
	init_cmd_timeout();
# endif	/* CONFIG_BOOT_RETRY_TIME */

#ifdef CONFIG_POST
	if (gd->flags & GD_FLG_POSTFAIL) {
		s = getenv("failbootcmd");
	} else
#endif /* CONFIG_POST */
#ifdef CONFIG_BOOTCOUNT_LIMIT
	if (bootlimit && (bootcount > bootlimit)) {
		printf("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
		       (unsigned)bootlimit);
		s = getenv("altbootcmd");
	} else
#endif /* CONFIG_BOOTCOUNT_LIMIT */
		s = getenv("bootcmd");
#ifdef CONFIG_OF_CONTROL
	/* Allow the fdt to override the boot command */
	env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd");
	if (env)
		s = env;

	process_fdt_options(gd->fdt_blob);

	/*
	 * If the bootsecure option was chosen, use secure_boot_cmd().
	 * Always use 'env' in this case, since bootsecure requres that the
	 * bootcmd was specified in the FDT too.
	 */
	if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0))
		secure_boot_cmd(env);

#endif /* CONFIG_OF_CONTROL */

	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");

	if (bootdelay != -1 && s && !abortboot(bootdelay)) {
#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
		int prev = disable_ctrlc(1);	/* disable Control C checking */
#endif

		run_command_list(s, -1, 0);

#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
		disable_ctrlc(prev);	/* restore Control C checking */
#endif
	}

#ifdef CONFIG_MENUKEY
	if (menukey == CONFIG_MENUKEY) {
		s = getenv("menucmd");
		if (s)
			run_command_list(s, -1, 0);
	}
#endif /* CONFIG_MENUKEY */
}
Commit	Line	Data
66ded17d SG	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 <cli.h>
	10	#include <fdtdec.h>
	11	#include <menu.h>
	12	#include <post.h>
	13
	14	DECLARE_GLOBAL_DATA_PTR;
	15
	16	#define MAX_DELAY_STOP_STR 32
	17
	18	#ifndef DEBUG_BOOTKEYS
	19	#define DEBUG_BOOTKEYS 0
	20	#endif
	21	#define debug_bootkeys(fmt, args...) \
	22	debug_cond(DEBUG_BOOTKEYS, fmt, ##args)
	23
	24	/***************************************************************************
	25	* Watch for 'delay' seconds for autoboot stop or autoboot delay string.
	26	* returns: 0 - no key string, allow autoboot 1 - got key string, abort
	27	*/
	28	# if defined(CONFIG_AUTOBOOT_KEYED)
	29	static int abortboot_keyed(int bootdelay)
	30	{
	31	int abort = 0;
	32	uint64_t etime = endtick(bootdelay);
	33	struct {
	34	char *str;
	35	u_int len;
	36	int retry;
	37	}
	38	delaykey[] = {
	39	{ str: getenv("bootdelaykey"), retry: 1 },
	40	{ str: getenv("bootdelaykey2"), retry: 1 },
	41	{ str: getenv("bootstopkey"), retry: 0 },
	42	{ str: getenv("bootstopkey2"), retry: 0 },
	43	};
	44
	45	char presskey[MAX_DELAY_STOP_STR];
	46	u_int presskey_len = 0;
	47	u_int presskey_max = 0;
	48	u_int i;
	49
	50	#ifndef CONFIG_ZERO_BOOTDELAY_CHECK
	51	if (bootdelay == 0)
	52	return 0;
	53	#endif
	54
	55	# ifdef CONFIG_AUTOBOOT_PROMPT
	56	printf(CONFIG_AUTOBOOT_PROMPT);
	57	# endif
	58
	59	# ifdef CONFIG_AUTOBOOT_DELAY_STR
	60	if (delaykey[0].str == NULL)
	61	delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
	62	# endif
	63	# ifdef CONFIG_AUTOBOOT_DELAY_STR2
	64	if (delaykey[1].str == NULL)
65	delaykey[1].str = CONFIG_AUTOBOOT_DELAY_STR2;
66	# endif
67	# ifdef CONFIG_AUTOBOOT_STOP_STR
68	if (delaykey[2].str == NULL)
69	delaykey[2].str = CONFIG_AUTOBOOT_STOP_STR;
70	# endif
71	# ifdef CONFIG_AUTOBOOT_STOP_STR2
72	if (delaykey[3].str == NULL)
73	delaykey[3].str = CONFIG_AUTOBOOT_STOP_STR2;
74	# endif
75
76	for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
77	delaykey[i].len = delaykey[i].str == NULL ?
78	0 : strlen(delaykey[i].str);
79	delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
80	MAX_DELAY_STOP_STR : delaykey[i].len;
81
82	presskey_max = presskey_max > delaykey[i].len ?
83	presskey_max : delaykey[i].len;
84
85	debug_bootkeys("%s key:<%s>\n",
86	delaykey[i].retry ? "delay" : "stop",
87	delaykey[i].str ? delaykey[i].str : "NULL");
88	}
89
90	/* In order to keep up with incoming data, check timeout only
91	* when catch up.
92	*/
93	do {
94	if (tstc()) {
95	if (presskey_len < presskey_max) {
96	presskey[presskey_len++] = getc();
97	} else {
98	for (i = 0; i < presskey_max - 1; i++)
99	presskey[i] = presskey[i + 1];
100
101	presskey[i] = getc();
102	}
103	}
104
105	for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
106	if (delaykey[i].len > 0 &&
107	presskey_len >= delaykey[i].len &&
108	memcmp(presskey + presskey_len -
109	delaykey[i].len, delaykey[i].str,
110	delaykey[i].len) == 0) {
111	debug_bootkeys("got %skey\n",
112	delaykey[i].retry ? "delay" :
113	"stop");
114
115	# ifdef CONFIG_BOOT_RETRY_TIME
116	/* don't retry auto boot */
117	if (!delaykey[i].retry)
118	bootretry_dont_retry();
119	# endif
120	abort = 1;
121	}
122	}
123	} while (!abort && get_ticks() <= etime);
124
125	if (!abort)
126	debug_bootkeys("key timeout\n");
127
128	#ifdef CONFIG_SILENT_CONSOLE
129	if (abort)
130	gd->flags &= ~GD_FLG_SILENT;
131	#endif
132
133	return abort;
134	}
135
136	# else /* !defined(CONFIG_AUTOBOOT_KEYED) */
137
138	#ifdef CONFIG_MENUKEY
139	static int menukey;
140	#endif
141
142	static int abortboot_normal(int bootdelay)
143	{
144	int abort = 0;
145	unsigned long ts;
146
147	#ifdef CONFIG_MENUPROMPT
148	printf(CONFIG_MENUPROMPT);
149	#else
150	if (bootdelay >= 0)
151	printf("Hit any key to stop autoboot: %2d ", bootdelay);
152	#endif
153
154	#if defined CONFIG_ZERO_BOOTDELAY_CHECK
155	/*
156	* Check if key already pressed
157	* Don't check if bootdelay < 0
158	*/
159	if (bootdelay >= 0) {
160	if (tstc()) { /* we got a key press */
161	(void) getc(); /* consume input */
162	puts("\b\b\b 0");
163	abort = 1; /* don't auto boot */
164	}
165	}
166	#endif
167
168	while ((bootdelay > 0) && (!abort)) {
169	--bootdelay;
170	/* delay 1000 ms */
171	ts = get_timer(0);
172	do {
173	if (tstc()) { /* we got a key press */
174	abort = 1; /* don't auto boot */
175	bootdelay = 0; /* no more delay */
176	# ifdef CONFIG_MENUKEY
177	menukey = getc();
178	# else
179	(void) getc(); /* consume input */
180	# endif
181	break;
182	}
183	udelay(10000);
184	} while (!abort && get_timer(ts) < 1000);
185
186	printf("\b\b\b%2d ", bootdelay);
187	}
188
189	putc('\n');
190
191	#ifdef CONFIG_SILENT_CONSOLE
192	if (abort)
193	gd->flags &= ~GD_FLG_SILENT;
194	#endif
195
196	return abort;
197	}
198	# endif /* CONFIG_AUTOBOOT_KEYED */
199
200	static int abortboot(int bootdelay)
201	{
202	#ifdef CONFIG_AUTOBOOT_KEYED
203	return abortboot_keyed(bootdelay);
204	#else
205	return abortboot_normal(bootdelay);
206	#endif
207	}
208
209	/*
210	* Runs the given boot command securely. Specifically:
211	* - Doesn't run the command with the shell (run_command or parse_string_outer),
212	* since that's a lot of code surface that an attacker might exploit.
213	* Because of this, we don't do any argument parsing--the secure boot command
214	* has to be a full-fledged u-boot command.
215	* - Doesn't check for keypresses before booting, since that could be a
216	* security hole; also disables Ctrl-C.
217	* - Doesn't allow the command to return.
218	*
219	* Upon any failures, this function will drop into an infinite loop after
220	* printing the error message to console.
221	*/
222
223	#if defined(CONFIG_OF_CONTROL)
224	static void secure_boot_cmd(char *cmd)
225	{
226	cmd_tbl_t *cmdtp;
227	int rc;
228
229	if (!cmd) {
230	printf("## Error: Secure boot command not specified\n");
231	goto err;
232	}
233
234	/* Disable Ctrl-C just in case some command is used that checks it. */
235	disable_ctrlc(1);
236
237	/* Find the command directly. */
238	cmdtp = find_cmd(cmd);
239	if (!cmdtp) {
240	printf("## Error: \"%s\" not defined\n", cmd);
241	goto err;
242	}
243
244	/* Run the command, forcing no flags and faking argc and argv. */
245	rc = (cmdtp->cmd)(cmdtp, 0, 1, &cmd);
246
247	/* Shouldn't ever return from boot command. */
248	printf("## Error: \"%s\" returned (code %d)\n", cmd, rc);
249
250	err:
251	/*
252	* Not a whole lot to do here. Rebooting won't help much, since we'll
253	* just end up right back here. Just loop.
254	*/
255	hang();
256	}
257
258	static void process_fdt_options(const void *blob)
259	{
260	ulong addr;
261
262	/* Add an env variable to point to a kernel payload, if available */
263	addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0);
264	if (addr)
265	setenv_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
266
267	/* Add an env variable to point to a root disk, if available */
268	addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0);
269	if (addr)
270	setenv_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
271	}
272	#endif /* CONFIG_OF_CONTROL */
273
274	void bootdelay_process(void)
275	{
276	#ifdef CONFIG_OF_CONTROL
277	char *env;
278	#endif
279	char *s;
280	int bootdelay;
281	#ifdef CONFIG_BOOTCOUNT_LIMIT
282	unsigned long bootcount = 0;
283	unsigned long bootlimit = 0;
284	#endif /* CONFIG_BOOTCOUNT_LIMIT */
285
286	#ifdef CONFIG_BOOTCOUNT_LIMIT
287	bootcount = bootcount_load();
288	bootcount++;
289	bootcount_store(bootcount);
290	setenv_ulong("bootcount", bootcount);
291	bootlimit = getenv_ulong("bootlimit", 10, 0);
292	#endif /* CONFIG_BOOTCOUNT_LIMIT */
293
294	s = getenv("bootdelay");
295	bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
296
297	#ifdef CONFIG_OF_CONTROL
298	bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
299	bootdelay);
300	#endif
301
302	debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);
303
304	#if defined(CONFIG_MENU_SHOW)
305	bootdelay = menu_show(bootdelay);
306	#endif
307	# ifdef CONFIG_BOOT_RETRY_TIME
308	init_cmd_timeout();
309	# endif /* CONFIG_BOOT_RETRY_TIME */
310
311	#ifdef CONFIG_POST
312	if (gd->flags & GD_FLG_POSTFAIL) {
313	s = getenv("failbootcmd");
314	} else
315	#endif /* CONFIG_POST */
316	#ifdef CONFIG_BOOTCOUNT_LIMIT
317	if (bootlimit && (bootcount > bootlimit)) {
318	printf("Warning: Bootlimit (%u) exceeded. Using altbootcmd.\n",
319	(unsigned)bootlimit);
320	s = getenv("altbootcmd");
321	} else
322	#endif /* CONFIG_BOOTCOUNT_LIMIT */
323	s = getenv("bootcmd");
324	#ifdef CONFIG_OF_CONTROL
325	/* Allow the fdt to override the boot command */
326	env = fdtdec_get_config_string(gd->fdt_blob, "bootcmd");
327	if (env)
328	s = env;
329
330	process_fdt_options(gd->fdt_blob);
331
332	/*
333	* If the bootsecure option was chosen, use secure_boot_cmd().
334	* Always use 'env' in this case, since bootsecure requres that the
335	* bootcmd was specified in the FDT too.
336	*/
337	if (fdtdec_get_config_int(gd->fdt_blob, "bootsecure", 0))
338	secure_boot_cmd(env);
339
340	#endif /* CONFIG_OF_CONTROL */
341
342	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
343
344	if (bootdelay != -1 && s && !abortboot(bootdelay)) {
345	#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
346	int prev = disable_ctrlc(1); /* disable Control C checking */
347	#endif
348
349	run_command_list(s, -1, 0);
350
351	#if defined(CONFIG_AUTOBOOT_KEYED) && !defined(CONFIG_AUTOBOOT_KEYED_CTRLC)
352	disable_ctrlc(prev); /* restore Control C checking */
353	#endif
354	}
355
356	#ifdef CONFIG_MENUKEY
357	if (menukey == CONFIG_MENUKEY) {
358	s = getenv("menucmd");
359	if (s)
360	run_command_list(s, -1, 0);
361	}
362	#endif /* CONFIG_MENUKEY */
363	}