diff --git a/board/basis/README.md b/board/basis/README.md
new file mode 100644
index 0000000..61853f7
--- /dev/null
+++ b/board/basis/README.md
@@ -0,0 +1,6 @@
+Westermo Basis
+==============
+
+Basis is the collective Westermo platform name for an Arm CPU with a
+Marvell SoHo switchcore.
+
diff --git a/board/byron/README.md b/board/byron/README.md
new file mode 100644
index 0000000..3631945
--- /dev/null
+++ b/board/byron/README.md
@@ -0,0 +1,6 @@
+Westermo Byron
+==============
+
+Byron is the collective Westermo platform name for an Arm CPU with a
+Marvell SoHo or an Flexibilis switchcore.
+