+ if (!fdtfile) {
+ fprintf(stderr, "%s: Missing fdt file\n", *argv);
+ usage(*argv);
+ }
+ if (!nodename) {
+ fprintf(stderr, "%s: Missing node name\n", *argv);
+ usage(*argv);
+ }
+ if (!propertyname) {
+ fprintf(stderr, "%s: Missing property name\n", *argv);
+ usage(*argv);
+ }