[J-u-boot.git] / common / autoboot.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2000
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 */

#include <common.h>
#include <autoboot.h>
#include <bootretry.h>
#include <cli.h>
#include <command.h>
#include <console.h>
#include <env.h>
#include <fdtdec.h>
#include <hash.h>
#include <log.h>
#include <malloc.h>
#include <memalign.h>
#include <menu.h>
#include <post.h>
#include <time.h>
#include <asm/global_data.h>
#include <linux/delay.h>
#include <u-boot/sha256.h>
#include <bootcount.h>

DECLARE_GLOBAL_DATA_PTR;

#define MAX_DELAY_STOP_STR 64

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

/* Stored value of bootdelay, used by autoboot_command() */
static int stored_bootdelay;
static int menukey;

#ifdef CONFIG_AUTOBOOT_ENCRYPTION
#define AUTOBOOT_STOP_STR_SHA256 CONFIG_AUTOBOOT_STOP_STR_SHA256
#else
#define AUTOBOOT_STOP_STR_SHA256 ""
#endif

#ifdef CONFIG_USE_AUTOBOOT_MENUKEY
#define AUTOBOOT_MENUKEY CONFIG_USE_AUTOBOOT_MENUKEY
#else
#define AUTOBOOT_MENUKEY 0
#endif

/*
 * Use a "constant-length" time compare function for this
 * hash compare:
 *
 * https://crackstation.net/hashing-security.htm
 */
static int slow_equals(u8 *a, u8 *b, int len)
{
	int diff = 0;
	int i;

	for (i = 0; i < len; i++)
		diff |= a[i] ^ b[i];

	return diff == 0;
}

/**
 * passwd_abort_sha256() - check for a hashed key sequence to abort booting
 *
 * This checks for the user entering a SHA256 hash within a given time.
 *
 * @etime: Timeout value ticks (stop when get_ticks() reachs this)
 * @return 0 if autoboot should continue, 1 if it should stop
 */
static int passwd_abort_sha256(uint64_t etime)
{
	const char *sha_env_str = env_get("bootstopkeysha256");
	u8 sha_env[SHA256_SUM_LEN];
	u8 *sha;
	char *presskey;
	char *c;
	const char *algo_name = "sha256";
	u_int presskey_len = 0;
	int abort = 0;
	int size = sizeof(sha);
	int ret;

	if (sha_env_str == NULL)
		sha_env_str = AUTOBOOT_STOP_STR_SHA256;

	presskey = malloc_cache_aligned(MAX_DELAY_STOP_STR);
	c = strstr(sha_env_str, ":");
	if (c && (c - sha_env_str < MAX_DELAY_STOP_STR)) {
		/* preload presskey with salt */
		memcpy(presskey, sha_env_str, c - sha_env_str);
		presskey_len = c - sha_env_str;
		sha_env_str = c + 1;
	}
	/*
	 * Generate the binary value from the environment hash value
	 * so that we can compare this value with the computed hash
	 * from the user input
	 */
	ret = hash_parse_string(algo_name, sha_env_str, sha_env);
	if (ret) {
		printf("Hash %s not supported!\n", algo_name);
		return 0;
	}

	sha = malloc_cache_aligned(SHA256_SUM_LEN);
	size = SHA256_SUM_LEN;
	/*
	 * We don't know how long the stop-string is, so we need to
	 * generate the sha256 hash upon each input character and
	 * compare the value with the one saved in the environment
	 */
	do {
		if (tstc()) {
			/* Check for input string overflow */
			if (presskey_len >= MAX_DELAY_STOP_STR) {
				free(presskey);
				free(sha);
				return 0;
			}

			presskey[presskey_len++] = getchar();

			/* Calculate sha256 upon each new char */
			hash_block(algo_name, (const void *)presskey,
				   presskey_len, sha, &size);

			/* And check if sha matches saved value in env */
			if (slow_equals(sha, sha_env, SHA256_SUM_LEN))
				abort = 1;
		}
	} while (!abort && get_ticks() <= etime);

	free(presskey);
	free(sha);
	return abort;
}

/**
 * passwd_abort_key() - check for a key sequence to aborted booting
 *
 * This checks for the user entering a string within a given time.
 *
 * @etime: Timeout value ticks (stop when get_ticks() reachs this)
 * @return 0 if autoboot should continue, 1 if it should stop
 */
static int passwd_abort_key(uint64_t etime)
{
	int abort = 0;
	struct {
		char *str;
		u_int len;
		int retry;
	}
	delaykey[] = {
		{ .str = env_get("bootdelaykey"),  .retry = 1 },
		{ .str = env_get("bootstopkey"),   .retry = 0 },
	};

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

#  ifdef CONFIG_AUTOBOOT_DELAY_STR
	if (delaykey[0].str == NULL)
		delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
#  endif
#  ifdef CONFIG_AUTOBOOT_STOP_STR
	if (delaykey[1].str == NULL)
		delaykey[1].str = CONFIG_AUTOBOOT_STOP_STR;
#  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++] = getchar();
			} else {
				for (i = 0; i < presskey_max - 1; i++)
					presskey[i] = presskey[i + 1];

				presskey[i] = getchar();
			}
		}

		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");

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

	return abort;
}

/***************************************************************************
 * Watch for 'delay' seconds for autoboot stop or autoboot delay string.
 * returns: 0 -  no key string, allow autoboot 1 - got key string, abort
 */
static int abortboot_key_sequence(int bootdelay)
{
	int abort;
	uint64_t etime = endtick(bootdelay);

#  ifdef CONFIG_AUTOBOOT_PROMPT
	/*
	 * CONFIG_AUTOBOOT_PROMPT includes the %d for all boards.
	 * To print the bootdelay value upon bootup.
	 */
	printf(CONFIG_AUTOBOOT_PROMPT, bootdelay);
#  endif

	if (IS_ENABLED(CONFIG_AUTOBOOT_ENCRYPTION))
		abort = passwd_abort_sha256(etime);
	else
		abort = passwd_abort_key(etime);
	if (!abort)
		debug_bootkeys("key timeout\n");

	return abort;
}

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

	printf("Hit any key to stop autoboot: %2d ", bootdelay);

	/*
	 * Check if key already pressed
	 */
	if (tstc()) {	/* we got a key press	*/
		getchar();	/* consume input	*/
		puts("\b\b\b 0");
		abort = 1;	/* don't auto boot	*/
	}

	while ((bootdelay > 0) && (!abort)) {
		--bootdelay;
		/* delay 1000 ms */
		ts = get_timer(0);
		do {
			if (tstc()) {	/* we got a key press	*/
				int key;

				abort  = 1;	/* don't auto boot	*/
				bootdelay = 0;	/* no more delay	*/
				key = getchar();/* consume input	*/
				if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY))
					menukey = key;
				break;
			}
			udelay(10000);
		} while (!abort && get_timer(ts) < 1000);

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

	putc('\n');

	return abort;
}

static int abortboot(int bootdelay)
{
	int abort = 0;

	if (bootdelay >= 0) {
		if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
			abort = abortboot_key_sequence(bootdelay);
		else
			abort = abortboot_single_key(bootdelay);
	}

	if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && abort)
		gd->flags &= ~GD_FLG_SILENT;

	return abort;
}

static void process_fdt_options(const void *blob)
{
#ifdef CONFIG_SYS_TEXT_BASE
	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)
		env_set_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)
		env_set_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
#endif /* CONFIG_SYS_TEXT_BASE */
}

const char *bootdelay_process(void)
{
	char *s;
	int bootdelay;

	bootcount_inc();

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

	if (IS_ENABLED(CONFIG_OF_CONTROL))
		bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
						  bootdelay);

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

	if (IS_ENABLED(CONFIG_AUTOBOOT_MENU_SHOW))
		bootdelay = menu_show(bootdelay);
	bootretry_init_cmd_timeout();

#ifdef CONFIG_POST
	if (gd->flags & GD_FLG_POSTFAIL) {
		s = env_get("failbootcmd");
	} else
#endif /* CONFIG_POST */
	if (bootcount_error())
		s = env_get("altbootcmd");
	else
		s = env_get("bootcmd");

	if (IS_ENABLED(CONFIG_OF_CONTROL))
		process_fdt_options(gd->fdt_blob);
	stored_bootdelay = bootdelay;

	return s;
}

void autoboot_command(const char *s)
{
	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");

	if (s && (stored_bootdelay == -2 ||
		 (stored_bootdelay != -1 && !abortboot(stored_bootdelay)))) {
		bool lock;
		int prev;

		lock = IS_ENABLED(CONFIG_AUTOBOOT_KEYED) &&
			!IS_ENABLED(CONFIG_AUTOBOOT_KEYED_CTRLC);
		if (lock)
			prev = disable_ctrlc(1); /* disable Ctrl-C checking */

		run_command_list(s, -1, 0);

		if (lock)
			disable_ctrlc(prev);	/* restore Ctrl-C checking */
	}

	if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY) &&
	    menukey == AUTOBOOT_MENUKEY) {
		s = env_get("menucmd");
		if (s)
			run_command_list(s, -1, 0);
	}
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
66ded17d SG	2	/*
	3	* (C) Copyright 2000
	4	* Wolfgang Denk, DENX Software Engineering, [email protected].
66ded17d SG	5	*/
	6
	7	#include <common.h>
39e1230e	8	#include <autoboot.h>
0098e179	9	#include <bootretry.h>
66ded17d	10	#include <cli.h>
288b29e4	11	#include <command.h>
24b852a7	12	#include <console.h>
c7694dd4	13	#include <env.h>
66ded17d	14	#include <fdtdec.h>
e8c78056	15	#include <hash.h>
f7ae49fc	16	#include <log.h>
336d4615	17	#include <malloc.h>
ecaae801	18	#include <memalign.h>
66ded17d SG	19	#include <menu.h>
66ded17d SG	20	#include <post.h>
1045315d	21	#include <time.h>
401d1c4f	22	#include <asm/global_data.h>
c05ed00a	23	#include <linux/delay.h>
8f0b1e24	24	#include <u-boot/sha256.h>
bc8c440f	25	#include <bootcount.h>
66ded17d SG	26
	27	DECLARE_GLOBAL_DATA_PTR;
	28
652b504f	29	#define MAX_DELAY_STOP_STR 64
66ded17d SG	30
	31	#ifndef DEBUG_BOOTKEYS
	32	#define DEBUG_BOOTKEYS 0
	33	#endif
	34	#define debug_bootkeys(fmt, args...) \
	35	debug_cond(DEBUG_BOOTKEYS, fmt, ##args)
	36
affb2156 SG	37	/* Stored value of bootdelay, used by autoboot_command() */
affb2156 SG	38	static int stored_bootdelay;
d915ad27	39	static int menukey;
affb2156	40
0c4bd318 SG	41	#ifdef CONFIG_AUTOBOOT_ENCRYPTION
	42	#define AUTOBOOT_STOP_STR_SHA256 CONFIG_AUTOBOOT_STOP_STR_SHA256
	43	#else
	44	#define AUTOBOOT_STOP_STR_SHA256 ""
	45	#endif
	46
d915ad27 SG	47	#ifdef CONFIG_USE_AUTOBOOT_MENUKEY
	48	#define AUTOBOOT_MENUKEY CONFIG_USE_AUTOBOOT_MENUKEY
	49	#else
	50	#define AUTOBOOT_MENUKEY 0
	51	#endif
	52
8f0b1e24 SR	53	/*
	54	* Use a "constant-length" time compare function for this
	55	* hash compare:
	56	*
	57	* https://crackstation.net/hashing-security.htm
66ded17d	58	*/
8f0b1e24 SR	59	static int slow_equals(u8 a, u8 b, int len)
	60	{
	61	int diff = 0;
	62	int i;
	63
	64	for (i = 0; i < len; i++)
	65	diff \|= a[i] ^ b[i];
	66
	67	return diff == 0;
	68	}
	69
88fa4beb SG	70	/**
	71	* passwd_abort_sha256() - check for a hashed key sequence to abort booting
	72	*
	73	* This checks for the user entering a SHA256 hash within a given time.
	74	*
	75	* @etime: Timeout value ticks (stop when get_ticks() reachs this)
	76	* @return 0 if autoboot should continue, 1 if it should stop
	77	*/
e8c78056	78	static int passwd_abort_sha256(uint64_t etime)
8f0b1e24	79	{
00caae6d	80	const char *sha_env_str = env_get("bootstopkeysha256");
8f0b1e24	81	u8 sha_env[SHA256_SUM_LEN];
ecaae801 HS	82	u8 *sha;
ecaae801 HS	83	char *presskey;
652b504f	84	char *c;
8f0b1e24 SR	85	const char *algo_name = "sha256";
	86	u_int presskey_len = 0;
	87	int abort = 0;
2d06fd83	88	int size = sizeof(sha);
8f0b1e24 SR	89	int ret;
	90
	91	if (sha_env_str == NULL)
0c4bd318	92	sha_env_str = AUTOBOOT_STOP_STR_SHA256;
8f0b1e24	93
652b504f JP	94	presskey = malloc_cache_aligned(MAX_DELAY_STOP_STR);
	95	c = strstr(sha_env_str, ":");
	96	if (c && (c - sha_env_str < MAX_DELAY_STOP_STR)) {
	97	/* preload presskey with salt */
	98	memcpy(presskey, sha_env_str, c - sha_env_str);
	99	presskey_len = c - sha_env_str;
	100	sha_env_str = c + 1;
	101	}
8f0b1e24 SR	102	/*
	103	* Generate the binary value from the environment hash value
	104	* so that we can compare this value with the computed hash
	105	* from the user input
	106	*/
	107	ret = hash_parse_string(algo_name, sha_env_str, sha_env);
	108	if (ret) {
	109	printf("Hash %s not supported!\n", algo_name);
	110	return 0;
	111	}
	112
ecaae801 HS	113	sha = malloc_cache_aligned(SHA256_SUM_LEN);
ecaae801 HS	114	size = SHA256_SUM_LEN;
8f0b1e24 SR	115	/*
	116	* We don't know how long the stop-string is, so we need to
	117	* generate the sha256 hash upon each input character and
	118	* compare the value with the one saved in the environment
	119	*/
	120	do {
	121	if (tstc()) {
	122	/* Check for input string overflow */
ecaae801 HS	123	if (presskey_len >= MAX_DELAY_STOP_STR) {
	124	free(presskey);
	125	free(sha);
8f0b1e24	126	return 0;
ecaae801	127	}
8f0b1e24	128
c670aeee	129	presskey[presskey_len++] = getchar();
8f0b1e24 SR	130
	131	/* Calculate sha256 upon each new char */
	132	hash_block(algo_name, (const void *)presskey,
	133	presskey_len, sha, &size);
	134
	135	/* And check if sha matches saved value in env */
	136	if (slow_equals(sha, sha_env, SHA256_SUM_LEN))
	137	abort = 1;
	138	}
	139	} while (!abort && get_ticks() <= etime);
	140
ecaae801 HS	141	free(presskey);
ecaae801 HS	142	free(sha);
8f0b1e24 SR	143	return abort;
8f0b1e24 SR	144	}
e8c78056	145
88fa4beb SG	146	/**
	147	* passwd_abort_key() - check for a key sequence to aborted booting
	148	*
	149	* This checks for the user entering a string within a given time.
	150	*
	151	* @etime: Timeout value ticks (stop when get_ticks() reachs this)
	152	* @return 0 if autoboot should continue, 1 if it should stop
	153	*/
e8c78056	154	static int passwd_abort_key(uint64_t etime)
66ded17d SG	155	{
66ded17d SG	156	int abort = 0;
66ded17d SG	157	struct {
	158	char *str;
	159	u_int len;
	160	int retry;
	161	}
	162	delaykey[] = {
00caae6d SG	163	{ .str = env_get("bootdelaykey"), .retry = 1 },
00caae6d SG	164	{ .str = env_get("bootstopkey"), .retry = 0 },
66ded17d SG	165	};
	166
	167	char presskey[MAX_DELAY_STOP_STR];
e088f0c3 YM	168	int presskey_len = 0;
	169	int presskey_max = 0;
	170	int i;
66ded17d	171
66ded17d SG	172	# ifdef CONFIG_AUTOBOOT_DELAY_STR
	173	if (delaykey[0].str == NULL)
	174	delaykey[0].str = CONFIG_AUTOBOOT_DELAY_STR;
	175	# endif
66ded17d	176	# ifdef CONFIG_AUTOBOOT_STOP_STR
2d908fa0 SR	177	if (delaykey[1].str == NULL)
2d908fa0 SR	178	delaykey[1].str = CONFIG_AUTOBOOT_STOP_STR;
66ded17d SG	179	# endif
	180
	181	for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
	182	delaykey[i].len = delaykey[i].str == NULL ?
	183	0 : strlen(delaykey[i].str);
	184	delaykey[i].len = delaykey[i].len > MAX_DELAY_STOP_STR ?
	185	MAX_DELAY_STOP_STR : delaykey[i].len;
	186
	187	presskey_max = presskey_max > delaykey[i].len ?
	188	presskey_max : delaykey[i].len;
	189
	190	debug_bootkeys("%s key:<%s>\n",
	191	delaykey[i].retry ? "delay" : "stop",
	192	delaykey[i].str ? delaykey[i].str : "NULL");
	193	}
	194
	195	/* In order to keep up with incoming data, check timeout only
	196	* when catch up.
	197	*/
	198	do {
	199	if (tstc()) {
	200	if (presskey_len < presskey_max) {
c670aeee	201	presskey[presskey_len++] = getchar();
66ded17d SG	202	} else {
	203	for (i = 0; i < presskey_max - 1; i++)
	204	presskey[i] = presskey[i + 1];
	205
c670aeee	206	presskey[i] = getchar();
66ded17d SG	207	}
	208	}
	209
	210	for (i = 0; i < sizeof(delaykey) / sizeof(delaykey[0]); i++) {
	211	if (delaykey[i].len > 0 &&
	212	presskey_len >= delaykey[i].len &&
	213	memcmp(presskey + presskey_len -
	214	delaykey[i].len, delaykey[i].str,
	215	delaykey[i].len) == 0) {
	216	debug_bootkeys("got %skey\n",
	217	delaykey[i].retry ? "delay" :
	218	"stop");
	219
66ded17d SG	220	/* don't retry auto boot */
	221	if (!delaykey[i].retry)
	222	bootretry_dont_retry();
66ded17d SG	223	abort = 1;
	224	}
	225	}
	226	} while (!abort && get_ticks() <= etime);
	227
8f0b1e24 SR	228	return abort;
8f0b1e24 SR	229	}
8f0b1e24 SR	230
	231	/***************************************************************************
	232	* Watch for 'delay' seconds for autoboot stop or autoboot delay string.
	233	* returns: 0 - no key string, allow autoboot 1 - got key string, abort
	234	*/
e79e4b25	235	static int abortboot_key_sequence(int bootdelay)
8f0b1e24 SR	236	{
	237	int abort;
	238	uint64_t etime = endtick(bootdelay);
	239
8f0b1e24 SR	240	# ifdef CONFIG_AUTOBOOT_PROMPT
	241	/*
	242	* CONFIG_AUTOBOOT_PROMPT includes the %d for all boards.
	243	* To print the bootdelay value upon bootup.
	244	*/
	245	printf(CONFIG_AUTOBOOT_PROMPT, bootdelay);
	246	# endif
	247
e8c78056 SG	248	if (IS_ENABLED(CONFIG_AUTOBOOT_ENCRYPTION))
	249	abort = passwd_abort_sha256(etime);
	250	else
	251	abort = passwd_abort_key(etime);
66ded17d SG	252	if (!abort)
	253	debug_bootkeys("key timeout\n");
	254
66ded17d SG	255	return abort;
	256	}
	257
e79e4b25	258	static int abortboot_single_key(int bootdelay)
66ded17d SG	259	{
	260	int abort = 0;
	261	unsigned long ts;
	262
46327392	263	printf("Hit any key to stop autoboot: %2d ", bootdelay);
66ded17d	264
66ded17d SG	265	/*
66ded17d SG	266	* Check if key already pressed
66ded17d	267	*/
46327392	268	if (tstc()) { /* we got a key press */
c670aeee	269	getchar(); /* consume input */
46327392 MY	270	puts("\b\b\b 0");
46327392 MY	271	abort = 1; /* don't auto boot */
66ded17d	272	}
66ded17d SG	273
	274	while ((bootdelay > 0) && (!abort)) {
	275	--bootdelay;
	276	/* delay 1000 ms */
	277	ts = get_timer(0);
	278	do {
	279	if (tstc()) { /* we got a key press */
d915ad27 SG	280	int key;
d915ad27 SG	281
66ded17d SG	282	abort = 1; /* don't auto boot */
66ded17d SG	283	bootdelay = 0; /* no more delay */
c670aeee	284	key = getchar();/* consume input */
d915ad27 SG	285	if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY))
d915ad27 SG	286	menukey = key;
66ded17d SG	287	break;
	288	}
	289	udelay(10000);
	290	} while (!abort && get_timer(ts) < 1000);
	291
	292	printf("\b\b\b%2d ", bootdelay);
	293	}
	294
	295	putc('\n');
	296
66ded17d SG	297	return abort;
66ded17d SG	298	}
66ded17d SG	299
	300	static int abortboot(int bootdelay)
	301	{
46327392	302	int abort = 0;
09b9d9e5	303
e79e4b25 SG	304	if (bootdelay >= 0) {
	305	if (IS_ENABLED(CONFIG_AUTOBOOT_KEYED))
	306	abort = abortboot_key_sequence(bootdelay);
	307	else
	308	abort = abortboot_single_key(bootdelay);
	309	}
09b9d9e5	310
42b4d14e	311	if (IS_ENABLED(CONFIG_SILENT_CONSOLE) && abort)
09b9d9e5	312	gd->flags &= ~GD_FLG_SILENT;
09b9d9e5 MY	313
09b9d9e5 MY	314	return abort;
66ded17d SG	315	}
66ded17d SG	316
66ded17d SG	317	static void process_fdt_options(const void *blob)
66ded17d SG	318	{
5fa3fd25	319	#ifdef CONFIG_SYS_TEXT_BASE
66ded17d SG	320	ulong addr;
	321
	322	/* Add an env variable to point to a kernel payload, if available */
	323	addr = fdtdec_get_config_int(gd->fdt_blob, "kernel-offset", 0);
	324	if (addr)
018f5303	325	env_set_addr("kernaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
66ded17d SG	326
	327	/* Add an env variable to point to a root disk, if available */
	328	addr = fdtdec_get_config_int(gd->fdt_blob, "rootdisk-offset", 0);
	329	if (addr)
018f5303	330	env_set_addr("rootaddr", (void *)(CONFIG_SYS_TEXT_BASE + addr));
5fa3fd25	331	#endif /* CONFIG_SYS_TEXT_BASE */
affb2156	332	}
66ded17d	333
affb2156	334	const char *bootdelay_process(void)
66ded17d	335	{
66ded17d SG	336	char *s;
66ded17d SG	337	int bootdelay;
bc8c440f LM	338
bc8c440f LM	339	bootcount_inc();
66ded17d	340
00caae6d	341	s = env_get("bootdelay");
66ded17d SG	342	bootdelay = s ? (int)simple_strtol(s, NULL, 10) : CONFIG_BOOTDELAY;
66ded17d SG	343
5fa3fd25 SG	344	if (IS_ENABLED(CONFIG_OF_CONTROL))
	345	bootdelay = fdtdec_get_config_int(gd->fdt_blob, "bootdelay",
	346	bootdelay);
66ded17d SG	347
	348	debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);
	349
5fa3fd25 SG	350	if (IS_ENABLED(CONFIG_AUTOBOOT_MENU_SHOW))
5fa3fd25 SG	351	bootdelay = menu_show(bootdelay);
b26440f1	352	bootretry_init_cmd_timeout();
66ded17d SG	353
	354	#ifdef CONFIG_POST
	355	if (gd->flags & GD_FLG_POSTFAIL) {
00caae6d	356	s = env_get("failbootcmd");
66ded17d SG	357	} else
66ded17d SG	358	#endif /* CONFIG_POST */
bc8c440f	359	if (bootcount_error())
00caae6d	360	s = env_get("altbootcmd");
bc8c440f	361	else
00caae6d	362	s = env_get("bootcmd");
66ded17d	363
5fa3fd25 SG	364	if (IS_ENABLED(CONFIG_OF_CONTROL))
5fa3fd25 SG	365	process_fdt_options(gd->fdt_blob);
affb2156	366	stored_bootdelay = bootdelay;
66ded17d	367
affb2156 SG	368	return s;
affb2156 SG	369	}
66ded17d	370
affb2156 SG	371	void autoboot_command(const char *s)
affb2156 SG	372	{
66ded17d SG	373	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : "<UNDEFINED>");
66ded17d SG	374
6ebe6b38 HS	375	if (s && (stored_bootdelay == -2 \|\|
6ebe6b38 HS	376	(stored_bootdelay != -1 && !abortboot(stored_bootdelay)))) {
5ec35ff3 SG	377	bool lock;
	378	int prev;
	379
	380	lock = IS_ENABLED(CONFIG_AUTOBOOT_KEYED) &&
	381	!IS_ENABLED(CONFIG_AUTOBOOT_KEYED_CTRLC);
	382	if (lock)
	383	prev = disable_ctrlc(1); /* disable Ctrl-C checking */
66ded17d SG	384
	385	run_command_list(s, -1, 0);
	386
5ec35ff3 SG	387	if (lock)
5ec35ff3 SG	388	disable_ctrlc(prev); /* restore Ctrl-C checking */
66ded17d SG	389	}
66ded17d SG	390
d915ad27 SG	391	if (IS_ENABLED(CONFIG_USE_AUTOBOOT_MENUKEY) &&
d915ad27 SG	392	menukey == AUTOBOOT_MENUKEY) {
00caae6d	393	s = env_get("menucmd");
66ded17d SG	394	if (s)
	395	run_command_list(s, -1, 0);
	396	}
66ded17d	397	}