diff --git a/arch/x86/cpu/start.S b/arch/x86/cpu/start.S
index e5c1733e594b0a4b2be7ae7f0f1849433382aedd..313fa3ff969f9c48c732c0e1fb2694e1bfc9de4f 100644
--- a/arch/x86/cpu/start.S
+++ b/arch/x86/cpu/start.S
@@ -128,6 +128,15 @@ car_init_ret:
 	andl	$0xfffffff0, %esp
 	post_code(POST_START_STACK)
 
+	/*
+	 * Debug UART is available here although it may not be plumbed out
+	 * to pins depending on the board. To use it:
+	 *
+	 * call  debug_uart_init
+	 * mov   $'a', %eax
+	 * call  printch
+	 */
+
 	/* Zero the global data since it won't happen later */
 	xorl	%eax, %eax
 	movl	$GENERATED_GBL_DATA_SIZE, %ecx
diff --git a/configs/minnowmax_defconfig b/configs/minnowmax_defconfig
index e98f5eb5cee3b9f4bd325ddfb3b52d781d83df8a..a67597d8d6635a24104f61e7b2041061c0de7947 100644
--- a/configs/minnowmax_defconfig
+++ b/configs/minnowmax_defconfig
@@ -24,3 +24,7 @@ CONFIG_FRAMEBUFFER_VESA_MODE_11A=y
 CONFIG_DM_RTC=y
 CONFIG_USE_PRIVATE_LIBGCC=y
 CONFIG_SYS_VSNPRINTF=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_NS16550=y
+CONFIG_DEBUG_UART_BASE=0x3f8
+CONFIG_DEBUG_UART_CLOCK=1843200