diff --git a/arch/sparc/mm/init.c b/arch/sparc/mm/init.c
index 8986697..cfa7d34 100644
--- a/arch/sparc/mm/init.c
+++ b/arch/sparc/mm/init.c
@@ -31,6 +31,7 @@
 #include <asm/vaddrs.h>
 #include <asm/pgalloc.h>	/* bug in asm-generic/tlb.h: check_pgt_cache */
 #include <asm/tlb.h>
+#include <asm/prom.h>
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 
@@ -349,6 +350,7 @@
 	protection_map[14] = PAGE_SHARED;
 	protection_map[15] = PAGE_SHARED;
 	btfixup();
+	prom_build_devicetree();
 	device_scan();
 }