activation.cpp - openbmc/phosphor-bmc-code-mgmt - Gitiles

 #include "activation.hpp"

 #include "images.hpp"
 #include "item_updater.hpp"
 #include "msl_verify.hpp"
 #include "serialize.hpp"

 #include <boost/asio/io_context.hpp>
 #include <boost/asio/post.hpp>
 #include <phosphor-logging/elog-errors.hpp>
 #include <phosphor-logging/elog.hpp>
 #include <phosphor-logging/lg2.hpp>
 #include <sdbusplus/exception.hpp>
 #include <xyz/openbmc_project/Common/error.hpp>
 #include <xyz/openbmc_project/Software/Version/error.hpp>

 #ifdef WANT_SIGNATURE_VERIFY
 #include "image_verify.hpp"
 #endif

 extern boost::asio::io_context& getIOContext();

 namespace phosphor
 {
 namespace software
 {
 namespace updater
 {

 namespace softwareServer = sdbusplus::server::xyz::openbmc_project::software;

 PHOSPHOR_LOG2_USING;
 using namespace phosphor::logging;
 using InternalFailure =
     sdbusplus::error::xyz::openbmc_project::common::InternalFailure;

 #ifdef WANT_SIGNATURE_VERIFY
 namespace control = sdbusplus::server::xyz::openbmc_project::control;
 #endif

 void Activation::subscribeToSystemdSignals()
 {
     auto method = this->bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                             SYSTEMD_INTERFACE, "Subscribe");
     try
     {
         this->bus.call_noreply(method);
     }
     catch (const sdbusplus::exception_t& e)
     {
         if (e.name() != nullptr &&
             strcmp("org.freedesktop.systemd1.AlreadySubscribed", e.name()) == 0)
         {
             // If an Activation attempt fails, the Unsubscribe method is not
             // called. This may lead to an AlreadySubscribed error if the
             // Activation is re-attempted.
         }
         else
         {
             error("Error subscribing to systemd: {ERROR}", "ERROR", e);
         }
     }

     return;
 }

 void Activation::unsubscribeFromSystemdSignals()
 {
     auto method = this->bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                             SYSTEMD_INTERFACE, "Unsubscribe");
     try
     {
         this->bus.call_noreply(method);
     }
     catch (const sdbusplus::exception_t& e)
     {
         error("Error unsubscribing from systemd signals: {ERROR}", "ERROR", e);
     }

     return;
 }

 auto Activation::activation(Activations value) -> Activations
 {
     if ((value != softwareServer::Activation::Activations::Active) &&
         (value != softwareServer::Activation::Activations::Activating))
     {
         redundancyPriority.reset(nullptr);
     }

     if (value == softwareServer::Activation::Activations::Activating)
     {
 #ifdef WANT_SIGNATURE_VERIFY
         fs::path uploadDir(IMG_UPLOAD_DIR);
         if (!verifySignature(uploadDir / versionId, SIGNED_IMAGE_CONF_PATH))
         {
             using InvalidSignatureErr = sdbusplus::error::xyz::openbmc_project::
                 software::version::InvalidSignature;
             report<InvalidSignatureErr>();
             // Stop the activation process, if fieldMode is enabled.
             if (parent.control::FieldMode::fieldModeEnabled())
             {
                 return softwareServer::Activation::activation(
                     softwareServer::Activation::Activations::Failed);
             }
         }
 #endif

         auto versionStr = parent.versions.find(versionId)->second->version();

         if (!minimum_ship_level::verify(versionStr))
         {
             return softwareServer::Activation::activation(
                 softwareServer::Activation::Activations::Failed);
         }

         if (!activationProgress)
         {
             activationProgress = std::make_unique<ActivationProgress>(bus,
                                                                       path);
         }

         if (!activationBlocksTransition)
         {
             activationBlocksTransition =
                 std::make_unique<ActivationBlocksTransition>(bus, path);
         }

 #ifdef HOST_BIOS_UPGRADE
         auto purpose = parent.versions.find(versionId)->second->purpose();
         if (purpose == VersionPurpose::Host)
         {
             // Enable systemd signals
             subscribeToSystemdSignals();

             // Set initial progress
             activationProgress->progress(20);

             // Initiate image writing to flash
             flashWriteHost();

             return softwareServer::Activation::activation(value);
         }
 #endif

         activationProgress->progress(10);

         parent.freeSpace(*this);

         // Enable systemd signals
         Activation::subscribeToSystemdSignals();

         flashWrite();

 #if defined UBIFS_LAYOUT || defined MMC_LAYOUT

         return softwareServer::Activation::activation(value);

 #else // STATIC_LAYOUT

         if (parent.runningImageSlot == 0)
         {
             // On primary, update it as before
             onFlashWriteSuccess();
             return softwareServer::Activation::activation(
                 softwareServer::Activation::Activations::Active);
         }
         // On secondary, wait for the service to complete
 #endif
     }
     else
     {
         activationBlocksTransition.reset(nullptr);
     }
     return softwareServer::Activation::activation(value);
 }

 void Activation::onFlashWriteSuccess()
 {
     activationProgress->progress(100);

     activationBlocksTransition.reset(nullptr);
     activationProgress.reset(nullptr);

     rwVolumeCreated = false;
     roVolumeCreated = false;
     ubootEnvVarsUpdated = false;
     Activation::unsubscribeFromSystemdSignals();

     auto flashId = parent.versions.find(versionId)->second->path();
     storePurpose(flashId, parent.versions.find(versionId)->second->purpose());

     if (!redundancyPriority)
     {
         redundancyPriority = std::make_unique<RedundancyPriority>(bus, path,
                                                                   *this, 0);
     }

     // Remove version object from image manager
     Activation::deleteImageManagerObject();

     // Create active association
     parent.createActiveAssociation(path);

     // Create updateable association as this
     // can be re-programmed.
     parent.createUpdateableAssociation(path);

     if (Activation::checkApplyTimeImmediate() == true)
     {
         info("Image Active and ApplyTime is immediate; rebooting BMC.");
         Activation::rebootBmc();
     }
     else
     {
         info("BMC image ready; need reboot to get activated.");
     }

     activation(softwareServer::Activation::Activations::Active);
 }

 void Activation::deleteImageManagerObject()
 {
     // Call the Delete object for <versionID> inside image_manager if the object
     // has not already been deleted due to a successful update or Delete call
     const std::string interface = std::string{VERSION_IFACE};
     auto method = this->bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH,
                                             MAPPER_BUSNAME, "GetObject");
     method.append(path.c_str());
     method.append(std::vector<std::string>({interface}));

     std::map<std::string, std::vector<std::string>> response;

     try
     {
         auto reply = bus.call(method);
         reply.read(response);
         auto it = response.find(VERSION_IFACE);
         if (it != response.end())
         {
             auto deleteMethod = this->bus.new_method_call(
                 VERSION_BUSNAME, path.c_str(),
                 "xyz.openbmc_project.Object.Delete", "Delete");
             try
             {
                 bus.call_noreply(deleteMethod);
             }
             catch (const sdbusplus::exception_t& e)
             {
                 error(
                     "Error deleting image ({PATH}) from image manager: {ERROR}",
                     "PATH", path, "ERROR", e);
                 return;
             }
         }
     }
     catch (const sdbusplus::exception_t& e)
     {
         error("Error in mapper method call for ({PATH}, {INTERFACE}: {ERROR}",
               "ERROR", e, "PATH", path, "INTERFACE", interface);
     }
     return;
 }

 auto Activation::requestedActivation(RequestedActivations value)
     -> RequestedActivations
 {
     rwVolumeCreated = false;
     roVolumeCreated = false;
     ubootEnvVarsUpdated = false;

     if ((value == softwareServer::Activation::RequestedActivations::Active) &&
         (softwareServer::Activation::requestedActivation() !=
          softwareServer::Activation::RequestedActivations::Active))
     {
         if ((softwareServer::Activation::activation() ==
              softwareServer::Activation::Activations::Ready) ||
             (softwareServer::Activation::activation() ==
              softwareServer::Activation::Activations::Failed))
         {
             Activation::activation(
                 softwareServer::Activation::Activations::Activating);
         }
     }
     return softwareServer::Activation::requestedActivation(value);
 }

 uint8_t RedundancyPriority::priority(uint8_t value)
 {
     // Set the priority value so that the freePriority() function can order
     // the versions by priority.
     auto newPriority = softwareServer::RedundancyPriority::priority(value);
     parent.parent.savePriority(parent.versionId, value);
     parent.parent.freePriority(value, parent.versionId);
     return newPriority;
 }

 uint8_t RedundancyPriority::sdbusPriority(uint8_t value)
 {
     parent.parent.savePriority(parent.versionId, value);
     return softwareServer::RedundancyPriority::priority(value);
 }

 void Activation::unitStateChange(sdbusplus::message_t& msg)
 {
     if (softwareServer::Activation::activation() !=
         softwareServer::Activation::Activations::Activating)
     {
         return;
     }

 #ifdef HOST_BIOS_UPGRADE
     auto purpose = parent.versions.find(versionId)->second->purpose();
     if (purpose == VersionPurpose::Host)
     {
         onStateChangesBios(msg);
         return;
     }
 #endif

     onStateChanges(msg);

     return;
 }

 #ifdef WANT_SIGNATURE_VERIFY
 bool Activation::verifySignature(const fs::path& imageDir,
                                  const fs::path& confDir)
 {
     using Signature = phosphor::software::image::Signature;

     Signature signature(imageDir, confDir);

     return signature.verify();
 }
 #endif

 void ActivationBlocksTransition::enableRebootGuard()
 {
     info("BMC image activating - BMC reboots are disabled.");

     auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                       SYSTEMD_INTERFACE, "StartUnit");
     method.append("reboot-guard-enable.service", "replace");
     bus.call_noreply(method);
 }

 void ActivationBlocksTransition::disableRebootGuard()
 {
     info("BMC activation has ended - BMC reboots are re-enabled.");

     auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                       SYSTEMD_INTERFACE, "StartUnit");
     method.append("reboot-guard-disable.service", "replace");
     bus.call_noreply(method);
 }

 bool Activation::checkApplyTimeImmediate()
 {
     auto service = utils::getService(bus, applyTimeObjPath, applyTimeIntf);
     if (service.empty())
     {
         info("Error getting the service name for BMC image ApplyTime. "
              "The BMC needs to be manually rebooted to complete the image "
              "activation if needed immediately.");
     }
     else
     {
         auto method = bus.new_method_call(service.c_str(), applyTimeObjPath,
                                           dbusPropIntf, "Get");
         method.append(applyTimeIntf, applyTimeProp);

         try
         {
             auto reply = bus.call(method);

             std::variant<std::string> result;
             reply.read(result);
             auto applyTime = std::get<std::string>(result);
             if (applyTime == applyTimeImmediate)
             {
                 return true;
             }
         }
         catch (const sdbusplus::exception_t& e)
         {
             error("Error in getting ApplyTime: {ERROR}", "ERROR", e);
         }
     }
     return false;
 }

 #ifdef HOST_BIOS_UPGRADE
 void Activation::flashWriteHost()
 {
     auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                       SYSTEMD_INTERFACE, "StartUnit");
     auto biosServiceFile = "obmc-flash-host-bios@" + versionId + ".service";
     method.append(biosServiceFile, "replace");
     try
     {
         auto reply = bus.call(method);
     }
     catch (const sdbusplus::exception_t& e)
     {
         error("Error in trying to upgrade Host Bios: {ERROR}", "ERROR", e);
         report<InternalFailure>();
     }
 }

 void Activation::onStateChangesBios(sdbusplus::message_t& msg)
 {
     uint32_t newStateID{};
     sdbusplus::message::object_path newStateObjPath;
     std::string newStateUnit{};
     std::string newStateResult{};

     // Read the msg and populate each variable
     msg.read(newStateID, newStateObjPath, newStateUnit, newStateResult);

     auto biosServiceFile = "obmc-flash-host-bios@" + versionId + ".service";

     if (newStateUnit == biosServiceFile)
     {
         // unsubscribe to systemd signals
         unsubscribeFromSystemdSignals();

         if (newStateResult == "done")
         {
             // Set activation progress to 100
             activationProgress->progress(100);

             // Set Activation value to active
             activation(softwareServer::Activation::Activations::Active);

             info("Bios upgrade completed successfully.");
             parent.biosVersion->version(
                 parent.versions.find(versionId)->second->version());

             // Delete the uploaded activation
             boost::asio::post(getIOContext(), [this]() {
                 this->parent.erase(this->versionId);
             });
         }
         else if (newStateResult == "failed")
         {
             // Set Activation value to Failed
             activation(softwareServer::Activation::Activations::Failed);

             error("Bios upgrade failed.");
         }
     }

     return;
 }

 #endif

 void Activation::rebootBmc()
 {
     auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
                                       SYSTEMD_INTERFACE, "StartUnit");
     method.append("force-reboot.service", "replace");
     try
     {
         auto reply = bus.call(method);
     }
     catch (const sdbusplus::exception_t& e)
     {
         alert("Error in trying to reboot the BMC. The BMC needs to be manually "
               "rebooted to complete the image activation. {ERROR}",
               "ERROR", e);
         report<InternalFailure>();
     }
 }

 } // namespace updater
 } // namespace software
 } // namespace phosphor
	#include "activation.hpp"

	#include "images.hpp"
	#include "item_updater.hpp"
	#include "msl_verify.hpp"
	#include "serialize.hpp"

	#include <boost/asio/io_context.hpp>
	#include <boost/asio/post.hpp>
	#include <phosphor-logging/elog-errors.hpp>
	#include <phosphor-logging/elog.hpp>
	#include <phosphor-logging/lg2.hpp>
	#include <sdbusplus/exception.hpp>
	#include <xyz/openbmc_project/Common/error.hpp>
	#include <xyz/openbmc_project/Software/Version/error.hpp>

	#ifdef WANT_SIGNATURE_VERIFY
	#include "image_verify.hpp"
	#endif

	extern boost::asio::io_context& getIOContext();

	namespace phosphor
	{
	namespace software
	{
	namespace updater
	{

	namespace softwareServer = sdbusplus::server::xyz::openbmc_project::software;

	PHOSPHOR_LOG2_USING;
	using namespace phosphor::logging;
	using InternalFailure =
	sdbusplus::error::xyz::openbmc_project::common::InternalFailure;

	#ifdef WANT_SIGNATURE_VERIFY
	namespace control = sdbusplus::server::xyz::openbmc_project::control;
	#endif

	void Activation::subscribeToSystemdSignals()
	{
	auto method = this->bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "Subscribe");
	try
	{
	this->bus.call_noreply(method);
	}
	catch (const sdbusplus::exception_t& e)
	{
	if (e.name() != nullptr &&
	strcmp("org.freedesktop.systemd1.AlreadySubscribed", e.name()) == 0)
	{
	// If an Activation attempt fails, the Unsubscribe method is not
	// called. This may lead to an AlreadySubscribed error if the
	// Activation is re-attempted.
	}
	else
	{
	error("Error subscribing to systemd: {ERROR}", "ERROR", e);
	}
	}

	return;
	}

	void Activation::unsubscribeFromSystemdSignals()
	{
	auto method = this->bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "Unsubscribe");
	try
	{
	this->bus.call_noreply(method);
	}
	catch (const sdbusplus::exception_t& e)
	{
	error("Error unsubscribing from systemd signals: {ERROR}", "ERROR", e);
	}

	return;
	}

	auto Activation::activation(Activations value) -> Activations
	{
	if ((value != softwareServer::Activation::Activations::Active) &&
	(value != softwareServer::Activation::Activations::Activating))
	{
	redundancyPriority.reset(nullptr);
	}

	if (value == softwareServer::Activation::Activations::Activating)
	{
	#ifdef WANT_SIGNATURE_VERIFY
	fs::path uploadDir(IMG_UPLOAD_DIR);
	if (!verifySignature(uploadDir / versionId, SIGNED_IMAGE_CONF_PATH))
	{
	using InvalidSignatureErr = sdbusplus::error::xyz::openbmc_project::
	software::version::InvalidSignature;
	report<InvalidSignatureErr>();
	// Stop the activation process, if fieldMode is enabled.
	if (parent.control::FieldMode::fieldModeEnabled())
	{
	return softwareServer::Activation::activation(
	softwareServer::Activation::Activations::Failed);
	}
	}
	#endif

	auto versionStr = parent.versions.find(versionId)->second->version();

	if (!minimum_ship_level::verify(versionStr))
	{
	return softwareServer::Activation::activation(
	softwareServer::Activation::Activations::Failed);
	}

	if (!activationProgress)
	{
	activationProgress = std::make_unique<ActivationProgress>(bus,
	path);
	}

	if (!activationBlocksTransition)
	{
	activationBlocksTransition =
	std::make_unique<ActivationBlocksTransition>(bus, path);
	}

	#ifdef HOST_BIOS_UPGRADE
	auto purpose = parent.versions.find(versionId)->second->purpose();
	if (purpose == VersionPurpose::Host)
	{
	// Enable systemd signals
	subscribeToSystemdSignals();

	// Set initial progress
	activationProgress->progress(20);

	// Initiate image writing to flash
	flashWriteHost();

	return softwareServer::Activation::activation(value);
	}
	#endif

	activationProgress->progress(10);

	parent.freeSpace(*this);

	// Enable systemd signals
	Activation::subscribeToSystemdSignals();

	flashWrite();

	#if defined UBIFS_LAYOUT \|\| defined MMC_LAYOUT

	return softwareServer::Activation::activation(value);

	#else // STATIC_LAYOUT

	if (parent.runningImageSlot == 0)
	{
	// On primary, update it as before
	onFlashWriteSuccess();
	return softwareServer::Activation::activation(
	softwareServer::Activation::Activations::Active);
	}
	// On secondary, wait for the service to complete
	#endif
	}
	else
	{
	activationBlocksTransition.reset(nullptr);
	}
	return softwareServer::Activation::activation(value);
	}

	void Activation::onFlashWriteSuccess()
	{
	activationProgress->progress(100);

	activationBlocksTransition.reset(nullptr);
	activationProgress.reset(nullptr);

	rwVolumeCreated = false;
	roVolumeCreated = false;
	ubootEnvVarsUpdated = false;
	Activation::unsubscribeFromSystemdSignals();

	auto flashId = parent.versions.find(versionId)->second->path();
	storePurpose(flashId, parent.versions.find(versionId)->second->purpose());

	if (!redundancyPriority)
	{
	redundancyPriority = std::make_unique<RedundancyPriority>(bus, path,
	*this, 0);
	}

	// Remove version object from image manager
	Activation::deleteImageManagerObject();

	// Create active association
	parent.createActiveAssociation(path);

	// Create updateable association as this
	// can be re-programmed.
	parent.createUpdateableAssociation(path);

	if (Activation::checkApplyTimeImmediate() == true)
	{
	info("Image Active and ApplyTime is immediate; rebooting BMC.");
	Activation::rebootBmc();
	}
	else
	{
	info("BMC image ready; need reboot to get activated.");
	}

	activation(softwareServer::Activation::Activations::Active);
	}

	void Activation::deleteImageManagerObject()
	{
	// Call the Delete object for <versionID> inside image_manager if the object
	// has not already been deleted due to a successful update or Delete call
	const std::string interface = std::string{VERSION_IFACE};
	auto method = this->bus.new_method_call(MAPPER_BUSNAME, MAPPER_PATH,
	MAPPER_BUSNAME, "GetObject");
	method.append(path.c_str());
	method.append(std::vector<std::string>({interface}));

	std::map<std::string, std::vector<std::string>> response;

	try
	{
	auto reply = bus.call(method);
	reply.read(response);
	auto it = response.find(VERSION_IFACE);
	if (it != response.end())
	{
	auto deleteMethod = this->bus.new_method_call(
	VERSION_BUSNAME, path.c_str(),
	"xyz.openbmc_project.Object.Delete", "Delete");
	try
	{
	bus.call_noreply(deleteMethod);
	}
	catch (const sdbusplus::exception_t& e)
	{
	error(
	"Error deleting image ({PATH}) from image manager: {ERROR}",
	"PATH", path, "ERROR", e);
	return;
	}
	}
	}
	catch (const sdbusplus::exception_t& e)
	{
	error("Error in mapper method call for ({PATH}, {INTERFACE}: {ERROR}",
	"ERROR", e, "PATH", path, "INTERFACE", interface);
	}
	return;
	}

	auto Activation::requestedActivation(RequestedActivations value)
	-> RequestedActivations
	{
	rwVolumeCreated = false;
	roVolumeCreated = false;
	ubootEnvVarsUpdated = false;

	if ((value == softwareServer::Activation::RequestedActivations::Active) &&
	(softwareServer::Activation::requestedActivation() !=
	softwareServer::Activation::RequestedActivations::Active))
	{
	if ((softwareServer::Activation::activation() ==
	softwareServer::Activation::Activations::Ready) \|\|
	(softwareServer::Activation::activation() ==
	softwareServer::Activation::Activations::Failed))
	{
	Activation::activation(
	softwareServer::Activation::Activations::Activating);
	}
	}
	return softwareServer::Activation::requestedActivation(value);
	}

	uint8_t RedundancyPriority::priority(uint8_t value)
	{
	// Set the priority value so that the freePriority() function can order
	// the versions by priority.
	auto newPriority = softwareServer::RedundancyPriority::priority(value);
	parent.parent.savePriority(parent.versionId, value);
	parent.parent.freePriority(value, parent.versionId);
	return newPriority;
	}

	uint8_t RedundancyPriority::sdbusPriority(uint8_t value)
	{
	parent.parent.savePriority(parent.versionId, value);
	return softwareServer::RedundancyPriority::priority(value);
	}

	void Activation::unitStateChange(sdbusplus::message_t& msg)
	{
	if (softwareServer::Activation::activation() !=
	softwareServer::Activation::Activations::Activating)
	{
	return;
	}

	#ifdef HOST_BIOS_UPGRADE
	auto purpose = parent.versions.find(versionId)->second->purpose();
	if (purpose == VersionPurpose::Host)
	{
	onStateChangesBios(msg);
	return;
	}
	#endif

	onStateChanges(msg);

	return;
	}

	#ifdef WANT_SIGNATURE_VERIFY
	bool Activation::verifySignature(const fs::path& imageDir,
	const fs::path& confDir)
	{
	using Signature = phosphor::software::image::Signature;

	Signature signature(imageDir, confDir);

	return signature.verify();
	}
	#endif

	void ActivationBlocksTransition::enableRebootGuard()
	{
	info("BMC image activating - BMC reboots are disabled.");

	auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "StartUnit");
	method.append("reboot-guard-enable.service", "replace");
	bus.call_noreply(method);
	}

	void ActivationBlocksTransition::disableRebootGuard()
	{
	info("BMC activation has ended - BMC reboots are re-enabled.");

	auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "StartUnit");
	method.append("reboot-guard-disable.service", "replace");
	bus.call_noreply(method);
	}

	bool Activation::checkApplyTimeImmediate()
	{
	auto service = utils::getService(bus, applyTimeObjPath, applyTimeIntf);
	if (service.empty())
	{
	info("Error getting the service name for BMC image ApplyTime. "
	"The BMC needs to be manually rebooted to complete the image "
	"activation if needed immediately.");
	}
	else
	{
	auto method = bus.new_method_call(service.c_str(), applyTimeObjPath,
	dbusPropIntf, "Get");
	method.append(applyTimeIntf, applyTimeProp);

	try
	{
	auto reply = bus.call(method);

	std::variant<std::string> result;
	reply.read(result);
	auto applyTime = std::get<std::string>(result);
	if (applyTime == applyTimeImmediate)
	{
	return true;
	}
	}
	catch (const sdbusplus::exception_t& e)
	{
	error("Error in getting ApplyTime: {ERROR}", "ERROR", e);
	}
	}
	return false;
	}

	#ifdef HOST_BIOS_UPGRADE
	void Activation::flashWriteHost()
	{
	auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "StartUnit");
	auto biosServiceFile = "obmc-flash-host-bios@" + versionId + ".service";
	method.append(biosServiceFile, "replace");
	try
	{
	auto reply = bus.call(method);
	}
	catch (const sdbusplus::exception_t& e)
	{
	error("Error in trying to upgrade Host Bios: {ERROR}", "ERROR", e);
	report<InternalFailure>();
	}
	}

	void Activation::onStateChangesBios(sdbusplus::message_t& msg)
	{
	uint32_t newStateID{};
	sdbusplus::message::object_path newStateObjPath;
	std::string newStateUnit{};
	std::string newStateResult{};

	// Read the msg and populate each variable
	msg.read(newStateID, newStateObjPath, newStateUnit, newStateResult);

	auto biosServiceFile = "obmc-flash-host-bios@" + versionId + ".service";

	if (newStateUnit == biosServiceFile)
	{
	// unsubscribe to systemd signals
	unsubscribeFromSystemdSignals();

	if (newStateResult == "done")
	{
	// Set activation progress to 100
	activationProgress->progress(100);

	// Set Activation value to active
	activation(softwareServer::Activation::Activations::Active);

	info("Bios upgrade completed successfully.");
	parent.biosVersion->version(
	parent.versions.find(versionId)->second->version());

	// Delete the uploaded activation
	boost::asio::post(getIOContext(), [this]() {
	this->parent.erase(this->versionId);
	});
	}
	else if (newStateResult == "failed")
	{
	// Set Activation value to Failed
	activation(softwareServer::Activation::Activations::Failed);

	error("Bios upgrade failed.");
	}
	}

	return;
	}

	#endif

	void Activation::rebootBmc()
	{
	auto method = bus.new_method_call(SYSTEMD_BUSNAME, SYSTEMD_PATH,
	SYSTEMD_INTERFACE, "StartUnit");
	method.append("force-reboot.service", "replace");
	try
	{
	auto reply = bus.call(method);
	}
	catch (const sdbusplus::exception_t& e)
	{
	alert("Error in trying to reboot the BMC. The BMC needs to be manually "
	"rebooted to complete the image activation. {ERROR}",
	"ERROR", e);
	report<InternalFailure>();
	}
	}

	} // namespace updater
	} // namespace software
	} // namespace phosphor