diff --git a/kernel/cmos.h b/kernel/cmos.h
new file mode 100644
index 0000000..35f926c
--- /dev/null
+++ b/kernel/cmos.h
@@ -0,0 +1,18 @@
+#ifndef CMOS_H
+#define CMOS_H
+
+#include <stdint.h>
+
+typedef struct {
+    uint8_t second;
+    uint8_t minute;
+    uint8_t hour;
+    uint8_t day;
+    uint8_t month;
+    uint32_t year;
+} cmos_time_t;
+
+void cmos_read_time(cmos_time_t* time);
+void cmos_print_time(cmos_time_t* time);
+
+#endif