Index: boot/arch/arm32/Makefile.inc
===================================================================
--- boot/arch/arm32/Makefile.inc	(revision 1b34360f5f571e1fd83499fdb1cc94d881f2548d)
+++ boot/arch/arm32/Makefile.inc	(revision a1ecb888dea12ffc2dfb77818301079cb446a24c)
@@ -57,5 +57,5 @@
 endif
 
-RD_DRVS += \
+RD_DRVS_ESSENTIAL += \
 	infrastructure/rootamdm37x \
 	fb/amdm37x_dispc \
Index: boot/arch/ppc32/Makefile.inc
===================================================================
--- boot/arch/ppc32/Makefile.inc	(revision 1b34360f5f571e1fd83499fdb1cc94d881f2548d)
+++ boot/arch/ppc32/Makefile.inc	(revision a1ecb888dea12ffc2dfb77818301079cb446a24c)
@@ -42,5 +42,5 @@
 	$(USPACE_PATH)/srv/hw/bus/cuda_adb/cuda_adb
 
-RD_DRVS += \
+RD_DRVS_ESSENTIAL += \
 	infrastructure/rootmac \
 	bus/pci/pciintel \