Index: boot/arch/arm32/Makefile.inc
===================================================================
--- boot/arch/arm32/Makefile.inc	(revision 7de184188e72503fed6ae5a5c2ed087b3fe184f4)
+++ boot/arch/arm32/Makefile.inc	(revision 29a38862b6cc96276502b777fad3e3293d542fe2)
@@ -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 7de184188e72503fed6ae5a5c2ed087b3fe184f4)
+++ boot/arch/ppc32/Makefile.inc	(revision 29a38862b6cc96276502b777fad3e3293d542fe2)
@@ -42,5 +42,5 @@
 	$(USPACE_PATH)/srv/hw/bus/cuda_adb/cuda_adb
 
-RD_DRVS += \
+RD_DRVS_ESSENTIAL += \
 	infrastructure/rootmac \
 	bus/pci/pciintel \