Add MMC layout

Add support for eMMC layout. The actual update of the image will
be handled by the BMC updater since the image file will be
packaged in a single tarball, but the eMMC still needs to have
some services to setup the host firmware mounts for the virtual
pnor configuration to use. Therefore the functions are empty.

Change-Id: Iaa052342a2bb66e46ab7b59bdcd5631f3dfc2999
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/mmc/item_updater_mmc.hpp b/mmc/item_updater_mmc.hpp
new file mode 100644
index 0000000..76dfcaa
--- /dev/null
+++ b/mmc/item_updater_mmc.hpp
@@ -0,0 +1,86 @@
+#pragma once
+
+#include "item_updater.hpp"
+
+namespace openpower
+{
+namespace software
+{
+namespace updater
+{
+
+class GardResetMMC : public GardReset
+{
+  public:
+    using GardReset::GardReset;
+    virtual ~GardResetMMC() = default;
+
+  protected:
+    /**
+     * @brief GARD factory reset - clears the PNOR GARD partition.
+     */
+    void reset() override;
+};
+
+/** @class ItemUpdaterMMC
+ *  @brief Manages the activation of the host version items for static layout
+ */
+class ItemUpdaterMMC : public ItemUpdater
+{
+  public:
+    ItemUpdaterMMC(sdbusplus::bus::bus& bus, const std::string& path) :
+        ItemUpdater(bus, path)
+    {
+        processPNORImage();
+        gardReset = std::make_unique<GardResetMMC>(bus, GARD_PATH);
+        volatileEnable = std::make_unique<ObjectEnable>(bus, volatilePath);
+
+        // Emit deferred signal.
+        emit_object_added();
+    }
+    virtual ~ItemUpdaterMMC() = default;
+
+    void freePriority(uint8_t value, const std::string& versionId) override;
+
+    void processPNORImage() override;
+
+    void deleteAll() override;
+
+    bool freeSpace() override;
+
+    void updateFunctionalAssociation(const std::string& versionId) override;
+
+    bool isVersionFunctional(const std::string& versionId) override;
+
+  private:
+    /** @brief Create Activation object */
+    std::unique_ptr<Activation> createActivationObject(
+        const std::string& path, const std::string& versionId,
+        const std::string& extVersion,
+        sdbusplus::xyz::openbmc_project::Software::server::Activation::
+            Activations activationStatus,
+        AssociationList& assocs) override;
+
+    /** @brief Create Version object */
+    std::unique_ptr<Version>
+        createVersionObject(const std::string& objPath,
+                            const std::string& versionId,
+                            const std::string& versionString,
+                            sdbusplus::xyz::openbmc_project::Software::server::
+                                Version::VersionPurpose versionPurpose,
+                            const std::string& filePath) override;
+
+    /** @brief Validate if image is valid or not */
+    bool validateImage(const std::string& path);
+
+    /** @brief Host factory reset - clears PNOR partitions for each
+     * Activation D-Bus object */
+    void reset() override;
+
+    /** @brief The functional version ID */
+    std::string functionalVersionId;
+};
+
+} // namespace updater
+} // namespace software
+} // namespace openpower