Add: nonworking serial port driver implementation

serial.h

@@ -0,0 +1,20 @@
+#ifndef INCLUDE_SERIAL_H
+#define INCLUDE_SERIAL_H
+
+#define SERIAL_COM1_BASE              0x3F8
+#define SERIAL_DATA_PORT(base)        (base)
+#define SERIAL_FIFO_CMD_PORT(base)    (base + 2)
+#define SERIAL_LINE_CMD_PORT(base)    (base + 3)
+#define SERIAL_MODEM_CMD_PORT(base)   (base + 4)
+#define SERIAL_LINE_STATUS_PORT(base) (base + 5)
+
+#define SERIAL_LINE_ENABLE_DLAB       0x80
+
+void serial_configure_baud_rate(unsigned short com, unsigned short divisor);
+void serial_configure_line(unsigned short com);
+void serial_configure_buffer(unsigned short com);
+void serial_configure_modem(unsigned short com);
+int serial_is_transmit_fifo_empty(unsigned short com);
+void serial_write(const char* buf, unsigned short com);
+
+#endif