diff --git a/arch/sparc/prom/Makefile b/arch/sparc/prom/Makefile
index 8f7e18546c97..74ca9cceaeea 100644
--- a/arch/sparc/prom/Makefile
+++ b/arch/sparc/prom/Makefile
@@ -2,5 +2,16 @@
 # Linux.
 #
 
-lib-y := bootstr.o devmap.o devops.o init.o memory.o misc.o mp.o \
-	 palloc.o ranges.o segment.o console.o printf.o tree.o
+lib-y                 := bootstr_$(BITS).o
+lib-$(CONFIG_SPARC32) += devmap.o
+lib-y                 += devops_$(BITS).o
+lib-y                 += init_$(BITS).o
+lib-$(CONFIG_SPARC32) += memory.o
+lib-y                 += misc_$(BITS).o
+lib-$(CONFIG_SPARC32) += mp.o
+lib-$(CONFIG_SPARC32) += palloc.o
+lib-$(CONFIG_SPARC32) += ranges.o
+lib-$(CONFIG_SPARC32) += segment.o
+lib-y                 += console_$(BITS).o
+lib-y                 += printf_$(BITS).o
+lib-y                 += tree_$(BITS).o
diff --git a/arch/sparc/prom/bootstr.c b/arch/sparc/prom/bootstr_32.c
similarity index 100%
rename from arch/sparc/prom/bootstr.c
rename to arch/sparc/prom/bootstr_32.c
diff --git a/arch/sparc/prom/console.c b/arch/sparc/prom/console_32.c
similarity index 100%
rename from arch/sparc/prom/console.c
rename to arch/sparc/prom/console_32.c
diff --git a/arch/sparc/prom/devops.c b/arch/sparc/prom/devops_32.c
similarity index 100%
rename from arch/sparc/prom/devops.c
rename to arch/sparc/prom/devops_32.c
diff --git a/arch/sparc/prom/init.c b/arch/sparc/prom/init_32.c
similarity index 100%
rename from arch/sparc/prom/init.c
rename to arch/sparc/prom/init_32.c
diff --git a/arch/sparc/prom/misc.c b/arch/sparc/prom/misc_32.c
similarity index 100%
rename from arch/sparc/prom/misc.c
rename to arch/sparc/prom/misc_32.c
diff --git a/arch/sparc/prom/printf.c b/arch/sparc/prom/printf_32.c
similarity index 100%
rename from arch/sparc/prom/printf.c
rename to arch/sparc/prom/printf_32.c
diff --git a/arch/sparc/prom/tree.c b/arch/sparc/prom/tree_32.c
similarity index 100%
rename from arch/sparc/prom/tree.c
rename to arch/sparc/prom/tree_32.c