Copy all sections as strings are otherwise missing.

payload/Makefile

@@ -2,7 +2,6 @@ TARGET = payload
 OBJS = start.o payload.o
 
 CC = gcc
-AS = as
 OBJCOPY = objcopy
 CFLAGS = -Os -fno-stack-protector
 LDFLAGS = -T linker.x -nostdlib -nostartfiles
@@ -10,7 +9,7 @@ LDFLAGS = -T linker.x -nostdlib -nostartfiles
 all: $(TARGET).bin
 
 %.bin: %.elf
-	$(OBJCOPY) -S -j .text -j .data -j .rodata -j .bss -O binary $^ $@
+	$(OBJCOPY) -S -O binary $^ $@
 
 $(TARGET).elf: $(OBJS)
 	$(CC) $(CFLAGS) $^ -o $@ $(LDFLAGS)