Index: boot/arch/mips32/Makefile.inc
===================================================================
--- boot/arch/mips32/Makefile.inc	(revision 235d31de52ec23ea2a4cb3b7837814333820b9cd)
+++ boot/arch/mips32/Makefile.inc	(revision b402cf95fcf52d258a17133c75e93a242b252ce6)
@@ -64,4 +64,9 @@
 endif
 
+ifeq ($(MACHINE),msim)
+	RD_DRVS_ESSENTIAL += \
+		platform/msim
+endif
+
 SOURCES = \
 	arch/$(BARCH)/src/asm.S \