diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..d4be386
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "rocket-chip"]
+	path = rocket-chip
+	url = git@github.com:chipsalliance/rocket-chip.git
diff --git a/rocket-chip b/rocket-chip
new file mode 160000
index 0000000..47f7b71
--- /dev/null
+++ b/rocket-chip
@@ -0,0 +1 @@
+Subproject commit 47f7b7144727f0340d511d35b9f6c7a91b2a276f