subdirs-y += ../../x86/tsc
-subdirs-y += ../../x86/fpu
subdirs-y += ../../x86/lapic
subdirs-y += ../../x86/cache
subdirs-y += ../../x86/smm
-driver-y += model_lx_init.o
-obj-y += cpubug.o
-obj-y += vsmsetup.o
+driver-y += model_lx_init.c
+ramstage-y += cpubug.c
+
+cpu_incs += $(src)/cpu/amd/model_lx/cache_as_ram.inc