diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig
index 9bb593a..40adcfb 100644
--- a/board/sunxi/Kconfig
+++ b/board/sunxi/Kconfig
@@ -177,6 +177,18 @@ config SPL_FEL
 	depends on SPL
 	default n
 
+config UART0_PORT_F
+	bool "UART0 on MicroSD breakout board"
+	depends on SPL_FEL
+	default n
+	---help---
+	Repurpose the SD card slot for getting access to the UART0 serial
+	console. Primarily useful only for low level u-boot debugging on
+	tablets, where normal UART0 is difficult to access and requires
+	device disassembly and/or soldering. As the SD card can't be used
+	at the same time, the system can be only booted in the FEL mode.
+	Only enable this if you really know what you are doing.
+
 config FDTFILE
 	string "Default fdtfile env setting for this board"
 
diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h
index 3f890b2..f7e87a2 100644
--- a/include/configs/sunxi-common.h
+++ b/include/configs/sunxi-common.h
@@ -160,7 +160,10 @@
 #define CONFIG_SPL_MAX_SIZE		0x5fe0		/* 24KB on sun4i/sun7i */
 
 #define CONFIG_SPL_LIBDISK_SUPPORT
+
+#if !defined(CONFIG_UART0_PORT_F)
 #define CONFIG_SPL_MMC_SUPPORT
+#endif
 
 #define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/armv7/sunxi/u-boot-spl.lds"
 
diff --git a/scripts/multiconfig.sh b/scripts/multiconfig.sh
index 70f3a5d..366e8fa 100755
--- a/scripts/multiconfig.sh
+++ b/scripts/multiconfig.sh
@@ -168,7 +168,7 @@ do_board_felconfig () {
 	echo "$progname: Cannot felconfig a non-sunxi or non-SPL platform" >&2
 	exit 1
     fi
-    sed -i -e 's/\# CONFIG_SPL_FEL is not set/CONFIG_SPL_FEL=y/g' \
+    sed -i -e 's/\# CONFIG_SPL_FEL is not set/CONFIG_SPL_FEL=y\nCONFIG_UART0_PORT_F=n/g' \
 	.config spl/.config
 }