add firmware inventory support
Add support to display the firmware version using the Firmware version
register from EM configuration. The version will be exposed as
xyz.openbmc_project.Software.Version interface on the Dbus.
Tested:
Unit Test -
```
> meson test -t 10 -C builddir/ --print-errorlogs --wrapper="valgrind --error-exitcode=1" test_firmware
ninja: Entering directory `/host/repos/Modbus/phosphor-modbus/builddir'
ninja: no work to do.
1/1 test_firmware OK 3.37s
Ok: 1
Fail: 0
```
Tested on Qemu -
```
> busctl tree xyz.openbmc_project.ModbusRTU
`- /xyz
`- /xyz/openbmc_project
|- /xyz/openbmc_project/inventory_source
| |- /xyz/openbmc_project/inventory_source/Heat_Exchanger_12_DevTTYUSB0
| |- /xyz/openbmc_project/inventory_source/Heat_Exchanger_12_DevTTYUSB1
| |- /xyz/openbmc_project/inventory_source/Reservoir_Pumping_Unit_12_DevTTYUSB0
| `- /xyz/openbmc_project/inventory_source/Reservoir_Pumping_Unit_12_DevTTYUSB1
|- /xyz/openbmc_project/sensors
| `- /xyz/openbmc_project/sensors/temperature
| |- /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_Coolant_Inlet_Temp_C
| |- /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_Coolant_Outlet_Temp_C
| |- /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_Coolant_Inlet_Temp_C
| `- /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_Coolant_Outlet_Temp_C
`- /xyz/openbmc_project/software
|- /xyz/openbmc_project/software/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_PLC_FW_Revision_9071
`- /xyz/openbmc_project/software/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_PLC_FW_Revision_8053
> busctl introspect xyz.openbmc_project.ModbusRTU /xyz/openbmc_project/software/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_PLC_FW_Revision_9071
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.DBus.Introspectable interface - - -
.Introspect method - s -
org.freedesktop.DBus.Peer interface - - -
.GetMachineId method - s -
.Ping method - - -
org.freedesktop.DBus.Properties interface - - -
.Get method ss v -
.GetAll method s a{sv} -
.Set method ssv - -
.PropertiesChanged signal sa{sv}as - -
xyz.openbmc_project.Association.Definitions interface - - -
.Associations property a(sss) 1 "running" "ran_on" "/xyz/openbmc_pr... emits-change writable
xyz.openbmc_project.Software.Activation interface - - -
.Activation property s "xyz.openbmc_project.Software.Activat... emits-change writable
.RequestedActivation property s "xyz.openbmc_project.Software.Activat... emits-change writable
xyz.openbmc_project.Software.Version interface - - -
.Purpose property s "xyz.openbmc_project.Software.Version... emits-change writable
.Version property s "ABABABAB" emits-change writable
```
Change-Id: I985e12ef88547585cca93569b083f347e74a8695
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/rtu/firmware/device_firmware.hpp b/rtu/firmware/device_firmware.hpp
new file mode 100644
index 0000000..c3839f4
--- /dev/null
+++ b/rtu/firmware/device_firmware.hpp
@@ -0,0 +1,55 @@
+#pragma once
+
+#include "device/base_config.hpp"
+#include "port/base_port.hpp"
+
+#include <sdbusplus/async.hpp>
+#include <sdbusplus/async/server.hpp>
+#include <xyz/openbmc_project/Association/Definitions/aserver.hpp>
+#include <xyz/openbmc_project/Software/Activation/aserver.hpp>
+#include <xyz/openbmc_project/Software/Version/aserver.hpp>
+
+namespace phosphor::modbus::rtu::device
+{
+
+namespace config
+{
+
+struct Config;
+
+} // namespace config
+
+namespace config_intf = phosphor::modbus::rtu::device::config;
+using PortIntf = phosphor::modbus::rtu::port::BasePort;
+
+class DeviceFirmware;
+
+using FirmwareIntf = sdbusplus::async::server_t<
+ DeviceFirmware, sdbusplus::aserver::xyz::openbmc_project::software::Version,
+ sdbusplus::aserver::xyz::openbmc_project::software::Activation,
+ sdbusplus::aserver::xyz::openbmc_project::association::Definitions>;
+
+class DeviceFirmware
+{
+ public:
+ DeviceFirmware() = delete;
+
+ explicit DeviceFirmware(sdbusplus::async::context& ctx,
+ const config_intf::Config& config,
+ PortIntf& serialPort);
+
+ auto readVersionRegister() -> sdbusplus::async::task<void>;
+
+ protected:
+ // Object path of current firmware object
+ // TODO: check if its possible to get rid off this via mocking since its
+ // only used in tests
+ const sdbusplus::message::object_path objectPath;
+
+ private:
+ std::unique_ptr<FirmwareIntf> currentFirmware;
+ const config_intf::Config config;
+ PortIntf& serialPort;
+};
+
+} // namespace phosphor::modbus::rtu::device