-ifeq ($(CONFIG_X86_32),y)
-include ${srctree}/arch/x86/kernel/acpi/Makefile_32
-else
-include ${srctree}/arch/x86/kernel/acpi/Makefile_64
+subdir- := realmode
+
+obj-$(CONFIG_ACPI) += boot.o
+obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_rm.o wakeup_$(BITS).o
+
+ifneq ($(CONFIG_ACPI_PROCESSOR),)
+obj-y += cstate.o processor.o
endif
+
+$(obj)/wakeup_rm.o: $(obj)/realmode/wakeup.bin
+
+$(obj)/realmode/wakeup.bin: FORCE
+ $(Q)$(MAKE) $(build)=$(obj)/realmode $@
+