+int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
+ int *seqp)
+{
+ int base_len = strlen(base);
+ const char *find_name;
+ int find_namelen;
+ int prop_offset;
+ int aliases;
+
+ find_name = fdt_get_name(blob, offset, &find_namelen);
+ debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
+
+ aliases = fdt_path_offset(blob, "/aliases");
+ for (prop_offset = fdt_first_property_offset(blob, aliases);
+ prop_offset > 0;
+ prop_offset = fdt_next_property_offset(blob, prop_offset)) {
+ const char *prop;
+ const char *name;
+ const char *slash;
+ const char *p;
+ int len;
+
+ prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
+ debug(" - %s, %s\n", name, prop);
+ if (len < find_namelen || *prop != '/' || prop[len - 1] ||
+ strncmp(name, base, base_len))
+ continue;
+
+ slash = strrchr(prop, '/');
+ if (strcmp(slash + 1, find_name))
+ continue;
+ for (p = name + strlen(name) - 1; p > name; p--) {
+ if (!isdigit(*p)) {
+ *seqp = simple_strtoul(p + 1, NULL, 10);
+ debug("Found seq %d\n", *seqp);
+ return 0;
+ }
+ }
+ }
+
+ debug("Not found\n");
+ return -ENOENT;
+}
+
+int fdtdec_get_chosen_node(const void *blob, const char *name)
+{
+ const char *prop;
+ int chosen_node;
+ int len;
+
+ if (!blob)
+ return -FDT_ERR_NOTFOUND;
+ chosen_node = fdt_path_offset(blob, "/chosen");
+ prop = fdt_getprop(blob, chosen_node, name, &len);
+ if (!prop)
+ return -FDT_ERR_NOTFOUND;
+ return fdt_path_offset(blob, prop);
+}
+