1 // SPDX-License-Identifier: GPL-2.0+
3  * Copyright 2010-2011 Calxeda, Inc.
25 	"default-" CONFIG_SYS_ARCH "-" CONFIG_SYS_SOC,
27 	"default-" CONFIG_SYS_ARCH,
29 	NULL
54  * filenames based on mac addresses. Convert's ':' to '-', and adds "01-" to
59  * Returns 1 for success, -ENOENT if 'ethaddr' is undefined in the
69 		return -EINVAL;  in format_mac_pxe()
73 		return -ENOENT;  in format_mac_pxe()
75 	sprintf(outbuf, "01-%02x-%02x-%02x-%02x-%02x-%02x",  in format_mac_pxe()
85  * in. If bootfile isn't defined in the environment, return NULL, which should
105 	if (last_slash == NULL)  in get_bootfile_path()
108 	path_len = (last_slash - bootfile) + 1;  in get_bootfile_path()
114 		return -1;  in get_bootfile_path()
130 	char *tftp_argv[] = {"tftp", NULL, NULL, NULL};  in do_get_tftp()
136 		return -ENOENT;  in do_get_tftp()
154 	return -ENOENT;  in do_get_ext2()
167 	return -ENOENT;  in do_get_fat()
180 	return -ENOENT;  in do_get_any()
187  * the bootfile path is NULL, we use file_path as is.
212 		return -ENAMETOOLONG;  in get_relfile()
251 		return -ENOENT;  in get_pxe_file()
254 		return -EINVAL;  in get_pxe_file()
283 		return -ENAMETOOLONG;  in get_pxelinux_path()
303 		return -ENOENT;  in pxe_uuid_path()
341 	for (mask_pos = 7; mask_pos >= 0;  mask_pos--) {  in pxe_ipaddr_paths()
350 	return -ENOENT;  in pxe_ipaddr_paths()
431 		return -ENOENT;  in get_relfile_envaddr()
434 		return -EINVAL;  in get_relfile_envaddr()
443  * String literals must be recognized based on context - there is no
461  * name - the name of the menu as given on the 'menu label' line.
462  * kernel - the path to the kernel file to use for this label.
463  * append - kernel command line to use when booting this label
464  * initrd - path to the initrd to use for this label.
465  * attempted - 0 if we haven't tried to boot this label, 1 if we have.
466  * localboot - 1 if this label specified 'localboot', 0 otherwise.
467  * list - lets these form a list, which a pxe_menu struct will hold.
489  * title - the name of the menu as given by a 'menu title' line.
490  * default_label - the name of the default label, if any.
491  * timeout - time in tenths of a second to wait for a user key-press before
493  * prompt - if 0, don't prompt for a choice unless the timeout period is
496  * labels - a list of labels defined for the menu.
510  * Returns NULL if malloc fails.
519 		return NULL;  in label_create()
528  * kernel, append and initrd members, if they're non NULL.
530  * So - be sure to only use dynamically allocated memory for the members of
536 	if (label->name)  in label_destroy()
537 		free(label->name);  in label_destroy()
539 	if (label->kernel)  in label_destroy()
540 		free(label->kernel);  in label_destroy()
542 	if (label->config)  in label_destroy()
543 		free(label->config);  in label_destroy()
545 	if (label->append)  in label_destroy()
546 		free(label->append);  in label_destroy()
548 	if (label->initrd)  in label_destroy()
549 		free(label->initrd);  in label_destroy()
551 	if (label->fdt)  in label_destroy()
552 		free(label->fdt);  in label_destroy()
554 	if (label->fdtdir)  in label_destroy()
555 		free(label->fdtdir);  in label_destroy()
569 	const char *c = label->menu ? label->menu : label->name;  in label_print()
571 	printf("%s:\t%s\n", label->num, c);  in label_print()
576  * environment variable is defined. Its contents will be executed as U-Boot
590 		return -ENOENT;  in label_localboot()
592 	if (label->append) {  in label_localboot()
595 		cli_simple_process_macros(label->append, bootargs);  in label_localboot()
621 	char *bootm_argv[] = { "bootm", NULL, NULL, NULL, NULL };  in label_boot()
625 	char *fit_addr = NULL;  in label_boot()
633 	label->attempted = 1;  in label_boot()
635 	if (label->localboot) {  in label_boot()
636 		if (label->localboot_val >= 0)  in label_boot()
641 	if (label->kernel == NULL) {  in label_boot()
643 				label->name);  in label_boot()
647 	if (label->initrd) {  in label_boot()
648 		if (get_relfile_envaddr(cmdtp, label->initrd, "ramdisk_addr_r") < 0) {  in label_boot()
650 					label->name);  in label_boot()
660 	if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {  in label_boot()
662 				label->name);  in label_boot()
666 	if (label->ipappend & 0x1) {  in label_boot()
673 	if (label->ipappend & 0x2) {  in label_boot()
676 		err = format_mac_pxe(mac_str + 8, sizeof(mac_str) - 8);  in label_boot()
682 	if ((label->ipappend & 0x3) || label->append) {  in label_boot()
686 		if (strlen(label->append ?: "") +  in label_boot()
689 			       strlen(label->append ?: ""),  in label_boot()
694 			if (label->append)  in label_boot()
695 				strncpy(bootargs, label->append,  in label_boot()
708 	if (label->config) {  in label_boot()
709 		int len = strlen(bootm_argv[1]) + strlen(label->config) + 1;  in label_boot()
716 		snprintf(fit_addr, len, "%s%s", bootm_argv[1], label->config);  in label_boot()
737 		char *fdtfile = NULL;  in label_boot()
738 		char *fdtfilefree = NULL;  in label_boot()
740 		if (label->fdt) {  in label_boot()
741 			fdtfile = label->fdt;  in label_boot()
742 		} else if (label->fdtdir) {  in label_boot()
759 				f2 = "-";  in label_boot()
764 			len = strlen(label->fdtdir);  in label_boot()
767 			else if (label->fdtdir[len - 1] != '/')  in label_boot()
772 			len = strlen(label->fdtdir) + strlen(slash) +  in label_boot()
782 				 label->fdtdir, slash, f1, f2, f3, f4);  in label_boot()
791 						label->name);  in label_boot()
795 			bootm_argv[3] = NULL;  in label_boot()
804 			bootm_argv[2] = "-";  in label_boot()
857  * A token - given by a value and a type.
886 	{NULL, T_INVALID}
906  * Characters from *p are copied into t-val until a character equal to
915  * of the token - the ending delimiter.
917  * On success, the new value of t->val is returned. Memory for t->val is
919  * memory is available, NULL is returned.
930 	 * is reached. Then, we take e - b to find the length of the token.  in get_string()
940 	len = e - b;  in get_string()
946 	t->val = malloc(len + 1);  in get_string()
947 	if (!t->val)  in get_string()
948 		return NULL;  in get_string()
952 			t->val[i] = tolower(*b);  in get_string()
954 			t->val[i] = *b;  in get_string()
957 	t->val[len] = '\0';  in get_string()
964 	t->type = T_STRING;  in get_string()
966 	return t->val;  in get_string()
977 		if (!strcmp(t->val, keywords[i].val)) {  in get_keyword()
978 			t->type = keywords[i].type;  in get_keyword()
994 	t->type = T_INVALID;  in get_token()
1010 		t->type = T_EOL;  in get_token()
1013 		t->type = T_EOF;  in get_token()
1020 		 * token delimited by whitespace, and then check if it  in get_token()
1060 		printf("Expected string literal: %.*s\n", (int)(*c - s), s);  in parse_sliteral()
1061 		return -EINVAL;  in parse_sliteral()
1080 		printf("Expected string: %.*s\n", (int)(*c - s), s);  in parse_integer()
1081 		return -EINVAL;  in parse_integer()
1084 	*dst = simple_strtol(t.val, NULL, 10);  in parse_integer()
1115 				 (int)(*c - s), s);  in handle_include()
1154 		err = parse_sliteral(c, &cfg->title);  in parse_menu()
1165 				(int)(*c - s), s);  in parse_menu()
1191 		if (!cfg->default_label)  in parse_label_menu()
1192 			cfg->default_label = strdup(label->name);  in parse_label_menu()
1194 		if (!cfg->default_label)  in parse_label_menu()
1195 			return -ENOMEM;  in parse_label_menu()
1199 		parse_sliteral(c, &label->menu);  in parse_label_menu()
1203 				(int)(*c - s), s);  in parse_label_menu()
1220 	err = parse_sliteral(c, &label->kernel);  in parse_label_kernel()
1224 	s = strstr(label->kernel, "#");  in parse_label_kernel()
1228 	label->config = malloc(strlen(s) + 1);  in parse_label_kernel()
1229 	if (!label->config)  in parse_label_kernel()
1230 		return -ENOMEM;  in parse_label_kernel()
1232 	strcpy(label->config, s);  in parse_label_kernel()
1256 		return -ENOMEM;  in parse_label()
1258 	err = parse_sliteral(c, &label->name);  in parse_label()
1260 		printf("Expected label name: %.*s\n", (int)(*c - s), s);  in parse_label()
1262 		return -EINVAL;  in parse_label()
1265 	list_add_tail(&label->list, &cfg->labels);  in parse_label()
1283 			err = parse_sliteral(c, &label->append);  in parse_label()
1284 			if (label->initrd)  in parse_label()
1286 			s = strstr(label->append, "initrd=");  in parse_label()
1290 			len = (int)(strchr(s, ' ') - s);  in parse_label()
1291 			label->initrd = malloc(len + 1);  in parse_label()
1292 			strncpy(label->initrd, s, len);  in parse_label()
1293 			label->initrd[len] = '\0';  in parse_label()
1298 			if (!label->initrd)  in parse_label()
1299 				err = parse_sliteral(c, &label->initrd);  in parse_label()
1303 			if (!label->fdt)  in parse_label()
1304 				err = parse_sliteral(c, &label->fdt);  in parse_label()
1308 			if (!label->fdtdir)  in parse_label()
1309 				err = parse_sliteral(c, &label->fdtdir);  in parse_label()
1313 			label->localboot = 1;  in parse_label()
1314 			err = parse_integer(c, &label->localboot_val);  in parse_label()
1318 			err = parse_integer(c, &label->ipappend);  in parse_label()
1326 			 * put the token back! we don't want it - it's the end  in parse_label()
1364 		return -EMLINK;  in parse_pxefile_top()
1375 			cfg->prompt = 1;  in parse_pxefile_top()
1382 			err = parse_integer(&p, &cfg->timeout);  in parse_pxefile_top()
1394 				if (cfg->default_label)  in parse_pxefile_top()
1395 					free(cfg->default_label);  in parse_pxefile_top()
1397 				cfg->default_label = label_name;  in parse_pxefile_top()
1420 							(int)(p - s), s);  in parse_pxefile_top()
1437 	if (cfg->title)  in destroy_pxe_menu()
1438 		free(cfg->title);  in destroy_pxe_menu()
1440 	if (cfg->default_label)  in destroy_pxe_menu()
1441 		free(cfg->default_label);  in destroy_pxe_menu()
1443 	list_for_each_safe(pos, n, &cfg->labels) {  in destroy_pxe_menu()
1456  * Returns NULL if there is an error, otherwise, returns a pointer to a
1470 		return NULL;  in parse_pxefile()
1474 	INIT_LIST_HEAD(&cfg->labels);  in parse_pxefile()
1482 		return NULL;  in parse_pxefile()
1489  * Converts a pxe_menu struct into a menu struct for use with U-Boot's generic
1499 	char *default_num = NULL;  in pxe_menu_to_menu()
1504 	m = menu_create(cfg->title, DIV_ROUND_UP(cfg->timeout, 10),  in pxe_menu_to_menu()
1505 			cfg->prompt, label_print, NULL, NULL);  in pxe_menu_to_menu()
1508 		return NULL;  in pxe_menu_to_menu()
1510 	list_for_each(pos, &cfg->labels) {  in pxe_menu_to_menu()
1513 		sprintf(label->num, "%d", i++);  in pxe_menu_to_menu()
1514 		if (menu_item_add(m, label->num, label) != 1) {  in pxe_menu_to_menu()
1516 			return NULL;  in pxe_menu_to_menu()
1518 		if (cfg->default_label &&  in pxe_menu_to_menu()
1519 		    (strcmp(label->name, cfg->default_label) == 0))  in pxe_menu_to_menu()
1520 			default_num = label->num;  in pxe_menu_to_menu()
1531 			if (err != -ENOENT) {  in pxe_menu_to_menu()
1533 				return NULL;  in pxe_menu_to_menu()
1536 			printf("Missing default: %s\n", cfg->default_label);  in pxe_menu_to_menu()
1551 	list_for_each(pos, &cfg->labels) {  in boot_unattempted_labels()
1554 		if (!label->attempted)  in boot_unattempted_labels()
1588 	 * err == -ENOENT if the menu was setup to select the default but no  in handle_pxe_menu()
1600 	} else if (err != -ENOENT) {  in handle_pxe_menu()
1640 	if (cfg == NULL) {  in do_pxe_boot()
1669 	argc--;  in do_pxe()
1675 		return cp->cmd(cmdtp, flag, argc, argv);  in do_pxe()
1683 	"get - try to retrieve a pxe file using tftp\npxe "
1684 	"boot [pxefile_addr_r] - boot from the pxe file at pxefile_addr_r\n"
1703 	if (argc > 1 && strstr(argv[1], "-p")) {  in do_sysboot()
1705 		argc--;  in do_sysboot()
1752 	if (cfg == NULL) {  in do_sysboot()
1758 		cfg->prompt = 1;  in do_sysboot()
1770 	"[-p] <interface> <dev[:part]> <ext2|fat|any> [addr] [filename]\n"
1771 	"    - load and parse syslinux menu file 'filename' from ext2, fat\n"