diff --git a/mmc/flash.cpp b/mmc/flash.cpp
new file mode 100644
index 0000000..afaadfb
--- /dev/null
+++ b/mmc/flash.cpp
@@ -0,0 +1,24 @@
+#include "flash.hpp"
+
+#include "activation.hpp"
+
+namespace phosphor
+{
+namespace software
+{
+namespace updater
+{
+
+void Activation::flashWrite()
+{
+    // Empty
+}
+
+void Activation::onStateChanges(sdbusplus::message::message& /*msg*/)
+{
+    // Empty
+}
+
+} // namespace updater
+} // namespace software
+} // namespace phosphor
diff --git a/mmc/item_updater_helper.cpp b/mmc/item_updater_helper.cpp
new file mode 100644
index 0000000..8ef5749
--- /dev/null
+++ b/mmc/item_updater_helper.cpp
@@ -0,0 +1,47 @@
+#include "item_updater_helper.hpp"
+
+namespace phosphor
+{
+namespace software
+{
+namespace updater
+{
+
+void Helper::setEntry(const std::string& /* entryId */, uint8_t /* value */)
+{
+    // Empty
+}
+
+void Helper::clearEntry(const std::string& /* entryId */)
+{
+    // Empty
+}
+
+void Helper::cleanup()
+{
+    // Empty
+}
+
+void Helper::factoryReset()
+{
+    // Empty
+}
+
+void Helper::removeVersion(const std::string& /* versionId */)
+{
+    // Empty
+}
+
+void Helper::updateUbootVersionId(const std::string& /* versionId */)
+{
+    // Empty
+}
+
+void Helper::mirrorAlt()
+{
+    // Empty
+}
+
+} // namespace updater
+} // namespace software
+} // namespace phosphor
diff --git a/mmc/meson.build b/mmc/meson.build
new file mode 100644
index 0000000..5045dee
--- /dev/null
+++ b/mmc/meson.build
@@ -0,0 +1,4 @@
+image_updater_sources += files(
+    'flash.cpp',
+    'item_updater_helper.cpp'
+)