diff --git a/arch/xtensa/include/asm/processor.h b/arch/xtensa/include/asm/processor.h
index a6d09fe04831..5e4f4a474131 100644
--- a/arch/xtensa/include/asm/processor.h
+++ b/arch/xtensa/include/asm/processor.h
@@ -14,6 +14,8 @@
 
 #include <linux/compiler.h>
 #include <linux/stringify.h>
+
+#include <asm/bootparam.h>
 #include <asm/ptrace.h>
 #include <asm/types.h>
 #include <asm/regs.h>
@@ -217,6 +219,8 @@ struct mm_struct;
 
 extern unsigned long __get_wchan(struct task_struct *p);
 
+void init_arch(bp_tag_t *bp_start);
+
 #define KSTK_EIP(tsk)		(task_pt_regs(tsk)->pc)
 #define KSTK_ESP(tsk)		(task_pt_regs(tsk)->areg[1])