Index: kernel/arch/arm32/src/asm.S
===================================================================
--- kernel/arch/arm32/src/asm.S	(revision c685fc8841d46e4d5001a1ed3d6df9ad5b9e5bb4)
+++ kernel/arch/arm32/src/asm.S	(revision 62bb73e0e1ca128b403d64d051cdc90441629f5a)
@@ -36,4 +36,5 @@
 .global memcpy_from_uspace_failover_address
 .global memcpy_to_uspace_failover_address
+.global early_putchar
 
 memsetb:
@@ -108,2 +109,5 @@
 	mov r0, #0
 	ldmia sp!, {r4, r5, pc}
+
+early_putchar:
+	mov pc, lr