diff --git a/bsp/allwinner/d1s/mksdcard.sh b/bsp/allwinner/d1s/mksdcard.sh
new file mode 100755
index 0000000000..2f465bc4c1
--- /dev/null
+++ b/bsp/allwinner/d1s/mksdcard.sh
@@ -0,0 +1,7 @@
+if [ ! -f "sdroot.bin" ]; then
+dd if=/dev/zero of=sdroot.bin bs=1M count=4
+fi
+
+mkfs.fat sdroot.bin
+mcopy -i sdroot.bin root/bin/* ::
+