446  * when a label section completes. We deal with that by ending a label
458  * Describes a single label given in a pxe file.
462  * name - the name of the menu as given on the 'menu label' line.
463  * kernel - the path to the kernel file to use for this label.
464  * append - kernel command line to use when booting this label
465  * initrd - path to the initrd to use for this label.
466  * attempted - 0 if we haven't tried to boot this label, 1 if we have.
467  * localboot - 1 if this label specified 'localboot', 0 otherwise.
490  * default_label - the name of the default label, if any.
492  *           booting the default label.
514 	struct pxe_label *label;  in label_create()  local
516 	label = malloc(sizeof(struct pxe_label));  in label_create()
518 	if (!label)  in label_create()
521 	memset(label, 0, sizeof(struct pxe_label));  in label_create()
523 	return label;  in label_create()
534 static void label_destroy(struct pxe_label *label)  in label_destroy()  argument
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->append)  in label_destroy()
543 		free(label->append);  in label_destroy()
545 	if (label->initrd)  in label_destroy()
546 		free(label->initrd);  in label_destroy()
548 	if (label->fdt)  in label_destroy()
549 		free(label->fdt);  in label_destroy()
551 	if (label->fdtdir)  in label_destroy()
552 		free(label->fdtdir);  in label_destroy()
554 	free(label);  in label_destroy()
558  * Print a label and its string members if they're defined.
565 	struct pxe_label *label = data;  in label_print()  local
566 	const char *c = label->menu ? label->menu : label->name;  in label_print()
568 	printf("%s:\t%s\n", label->num, c);  in label_print()
572  * Boot a label that specified 'localboot'. This requires that the 'localcmd'
574  * command.  If the label specified an 'append' line, its contents will be
580 static int label_localboot(struct pxe_label *label)  in label_localboot()  argument
589 	if (label->append) {  in label_localboot()
592 		cli_simple_process_macros(label->append, bootargs);  in label_localboot()
610  * If the label specifies an initrd file, it will be stored in the location
613  * If the label specifies an 'append' line, its contents will overwrite that
616 static int label_boot(cmd_tbl_t *cmdtp, struct pxe_label *label)  in label_boot()  argument
627 	label_print(label);  in label_boot()
629 	label->attempted = 1;  in label_boot()
631 	if (label->localboot) {  in label_boot()
632 		if (label->localboot_val >= 0)  in label_boot()
633 			label_localboot(label);  in label_boot()
637 	if (label->kernel == NULL) {  in label_boot()
639 				label->name);  in label_boot()
643 	if (label->initrd) {  in label_boot()
644 		if (get_relfile_envaddr(cmdtp, label->initrd, "ramdisk_addr_r") < 0) {  in label_boot()
646 					label->name);  in label_boot()
656 	if (get_relfile_envaddr(cmdtp, label->kernel, "kernel_addr_r") < 0) {  in label_boot()
658 				label->name);  in label_boot()
662 	if (label->ipappend & 0x1) {  in label_boot()
669 	if (label->ipappend & 0x2) {  in label_boot()
678 	if ((label->ipappend & 0x3) || label->append) {  in label_boot()
682 		if (strlen(label->append ?: "") +  in label_boot()
685 			       strlen(label->append ?: ""),  in label_boot()
690 			if (label->append)  in label_boot()
691 				strncpy(bootargs, label->append,  in label_boot()
708 	 * Scenario 1: If fdt_addr_r specified and "fdt" label is defined in  in label_boot()
719 	/* if fdt label is defined then get fdt from server */  in label_boot()
724 		if (label->fdt) {  in label_boot()
725 			fdtfile = label->fdt;  in label_boot()
726 		} else if (label->fdtdir) {  in label_boot()
748 			len = strlen(label->fdtdir);  in label_boot()
751 			else if (label->fdtdir[len - 1] != '/')  in label_boot()
756 			len = strlen(label->fdtdir) + strlen(slash) +  in label_boot()
766 				 label->fdtdir, slash, f1, f2, f3, f4);  in label_boot()
775 						label->name);  in label_boot()
853 	{"label", T_LABEL},
1157  * Handles parsing a 'menu line' when we're parsing a label.
1160 				struct pxe_label *label)  in parse_label_menu()  argument
1172 			cfg->default_label = strdup(label->name);  in parse_label_menu()
1179 		parse_sliteral(c, &label->menu);  in parse_label_menu()
1192  * Parses a label and adds it to the list of labels for a menu.
1194  * A label ends when we either get to the end of a file, or
1204 	struct pxe_label *label;  in parse_label()  local
1207 	label = label_create();  in parse_label()
1208 	if (!label)  in parse_label()
1211 	err = parse_sliteral(c, &label->name);  in parse_label()
1213 		printf("Expected label name: %.*s\n", (int)(*c - s), s);  in parse_label()
1214 		label_destroy(label);  in parse_label()
1218 	list_add_tail(&label->list, &cfg->labels);  in parse_label()
1227 			err = parse_label_menu(c, cfg, label);  in parse_label()
1232 			err = parse_sliteral(c, &label->kernel);  in parse_label()
1236 			err = parse_sliteral(c, &label->append);  in parse_label()
1237 			if (label->initrd)  in parse_label()
1239 			s = strstr(label->append, "initrd=");  in parse_label()
1244 			label->initrd = malloc(len + 1);  in parse_label()
1245 			strncpy(label->initrd, s, len);  in parse_label()
1246 			label->initrd[len] = '\0';  in parse_label()
1251 			if (!label->initrd)  in parse_label()
1252 				err = parse_sliteral(c, &label->initrd);  in parse_label()
1256 			if (!label->fdt)  in parse_label()
1257 				err = parse_sliteral(c, &label->fdt);  in parse_label()
1261 			if (!label->fdtdir)  in parse_label()
1262 				err = parse_sliteral(c, &label->fdtdir);  in parse_label()
1266 			label->localboot = 1;  in parse_label()
1267 			err = parse_integer(c, &label->localboot_val);  in parse_label()
1271 			err = parse_integer(c, &label->ipappend);  in parse_label()
1280 			 * of a label and whatever token this is, it's  in parse_label()
1388 	struct pxe_label *label;  in destroy_pxe_menu()  local
1397 		label = list_entry(pos, struct pxe_label, list);  in destroy_pxe_menu()
1399 		label_destroy(label);  in destroy_pxe_menu()
1447 	struct pxe_label *label;  in pxe_menu_to_menu()  local
1464 		label = list_entry(pos, struct pxe_label, list);  in pxe_menu_to_menu()
1466 		sprintf(label->num, "%d", i++);  in pxe_menu_to_menu()
1467 		if (menu_item_add(m, label->num, label) != 1) {  in pxe_menu_to_menu()
1472 		    (strcmp(label->name, cfg->default_label) == 0))  in pxe_menu_to_menu()
1473 			default_num = label->num;  in pxe_menu_to_menu()
1478 	 * After we've created items for each label in the menu, set the  in pxe_menu_to_menu()
1479 	 * menu's default label if one was specified.  in pxe_menu_to_menu()
1502 	struct pxe_label *label;  in boot_unattempted_labels()  local
1505 		label = list_entry(pos, struct pxe_label, list);  in boot_unattempted_labels()
1507 		if (!label->attempted)  in boot_unattempted_labels()
1508 			label_boot(cmdtp, label);  in boot_unattempted_labels()