diff --git a/src/bsp/lk/include/kernel/debug.h b/src/bsp/lk/include/kernel/debug.h
new file mode 100644
index 0000000..3677caf
--- /dev/null
+++ b/src/bsp/lk/include/kernel/debug.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2012-2014 Travis Geiselbrecht
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#ifndef __KERNEL_DEBUG_H
+#define __KERNEL_DEBUG_H
+
+#include <compiler.h>
+
+__BEGIN_CDECLS;
+
+#include <debug.h>
+
+/* kernel event log */
+#if WITH_KERNEL_EVLOG
+
+#include <lib/evlog.h>
+
+#ifndef KERNEL_EVLOG_LEN
+#define KERNEL_EVLOG_LEN 1024
+#endif
+
+void kernel_evlog_init(void);
+
+void kernel_evlog_add(uintptr_t id, uintptr_t arg0, uintptr_t arg1);
+void kernel_evlog_dump(void);
+
+#else // !WITH_KERNEL_EVLOG
+
+/* do nothing versions */
+static inline void kernel_evlog_init(void) {}
+static inline void kernel_evlog_add(uintptr_t id, uintptr_t arg0, uintptr_t arg1) {}
+static inline void kernel_evlog_dump(void) {}
+
+#endif
+
+enum {
+	KERNEL_EVLOG_NULL = 0,
+	KERNEL_EVLOG_CONTEXT_SWITCH,
+	KERNEL_EVLOG_PREEMPT,
+	KERNEL_EVLOG_TIMER_TICK,
+	KERNEL_EVLOG_TIMER_CALL,
+	KERNEL_EVLOG_IRQ_ENTER,
+	KERNEL_EVLOG_IRQ_EXIT,
+};
+
+#define KEVLOG_THREAD_SWITCH(from, to) kernel_evlog_add(KERNEL_EVLOG_CONTEXT_SWITCH, (uintptr_t)from, (uintptr_t)to)
+#define KEVLOG_THREAD_PREEMPT(thread) kernel_evlog_add(KERNEL_EVLOG_PREEMPT, (uintptr_t)thread, 0)
+#define KEVLOG_TIMER_TICK() kernel_evlog_add(KERNEL_EVLOG_TIMER_TICK, 0, 0)
+#define KEVLOG_TIMER_CALL(ptr, arg) kernel_evlog_add(KERNEL_EVLOG_TIMER_CALL, (uintptr_t)ptr, (uintptr_t)arg)
+#define KEVLOG_IRQ_ENTER(irqn) kernel_evlog_add(KERNEL_EVLOG_IRQ_ENTER, (uintptr_t)irqn, 0)
+#define KEVLOG_IRQ_EXIT(irqn) kernel_evlog_add(KERNEL_EVLOG_IRQ_EXIT, (uintptr_t)irqn, 0)
+
+__END_CDECLS;
+
+#endif
+