diff --git a/src/system/kernel/arch/ppc/arch_cpu_asm.S b/src/system/kernel/arch/ppc/arch_cpu_asm.S
index a13ae7e480..e90b01ff35 100644
--- a/src/system/kernel/arch/ppc/arch_cpu_asm.S
+++ b/src/system/kernel/arch/ppc/arch_cpu_asm.S
@@ -170,3 +170,9 @@ FUNCTION(reset_dbats):
 	mtdbatl 3, %r3
 	blr
 
+/* void __eieio(void)
+ */
+FUNCTION(__eieio):
+	eieio
+	blr
+