diff --git a/conf/linux_defconfig b/conf/linux_defconfig
index 1a8c670..cd87340 100644
--- a/conf/linux_defconfig
+++ b/conf/linux_defconfig
@@ -47,6 +47,10 @@ CONFIG_MICROSEMI_PHY=y
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_VT is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+# CONFIG_SERIAL_8250_PCI is not set
+CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_SERIAL_SIFIVE=y
 CONFIG_SERIAL_SIFIVE_CONSOLE=y
 # CONFIG_HVC_RISCV_SBI is not set