serial: Ensure DLAB off before initiatialisation
diff --git a/common/drivers/serial.s2.c b/common/drivers/serial.s2.c
index 20cfa6a2..4141dc4c 100644
--- a/common/drivers/serial.s2.c
+++ b/common/drivers/serial.s2.c
@@ -34,6 +34,7 @@ static void serial_initialise(void) {
#if bios == 1
// Init com1
+ outb(0x3f8 + 3, 0x00);
outb(0x3f8 + 1, 0x00);
outb(0x3f8 + 3, 0x80);
outb(0x3f8 + 0, 0x0c); // 9600 baud
