diff --git a/configs/nsim_700be_defconfig b/configs/nsim_700be_defconfig
index 9188ab2..6f03145 100644
--- a/configs/nsim_700be_defconfig
+++ b/configs/nsim_700be_defconfig
@@ -4,6 +4,7 @@
 CONFIG_SYS_TEXT_BASE=0x81000000
 CONFIG_SYS_CLK_FREQ=70000000
 CONFIG_DEFAULT_DEVICE_TREE="nsim"
+CONFIG_DEBUG_UART=y
 CONFIG_BOOTDELAY=3
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttyARC0,115200n8"
@@ -14,5 +15,8 @@
 CONFIG_OF_EMBED=y
 CONFIG_DM=y
 CONFIG_DM_SERIAL=y
+CONFIG_DEBUG_ARC_SERIAL=y
+CONFIG_DEBUG_UART_BASE=0xc0fc1000
+CONFIG_DEBUG_UART_CLOCK=70000000
 CONFIG_ARC_SERIAL=y
 CONFIG_USE_PRIVATE_LIBGCC=y