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2026/4/21 16:24:13
文章目录
- 1.说明
- 2.分析代码
- 2.1 `phosphor-bmc-code-mgmt-master/bmc/image_manager_main.cpp`
- 2.2 `phosphor-bmc-code-mgmt-master/bmc/download_manager_main.cpp`
- 2.3 `phosphor-bmc-code-mgmt-master/bmc/sync_manager_main.cpp`
- 2.4 `phosphor-bmc-code-mgmt-master/bmc/software_manager.cpp`
- 2.5 `phosphor-bmc-code-mgmt-master/bmc/item_updater_main.cpp`
- 2.6 `web`--> 底层链路过程
- 2.6.1 `redfish`端(版本信息获取)
- 3.升级`bmc`固件
- 3.1 `bmc`固件升级操作
- 3.1.1 遵循`systemd`框架的升级方法
- 3.1.2 执行原理
- 3.2 遵循`redfish`规范操作方法
- 3.3 使用`tftp`方法
- 4. 固件打包步骤原理
1.说明
本节是分析介绍phosphor-bmc-code-mgmt仓库的代码的一些基本的流程逻辑。(持续更新)
参考资源:
- docs/designs/code-update文档
- code update
- https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/yaml/xyz/openbmc_project/Software/README.md
2.分析代码
2.1phosphor-bmc-code-mgmt-master/bmc/image_manager_main.cpp
代码流程如下:
intmain()--->sdbusplus::server::manager_tobjManager(bus,SOFTWARE_OBJPATH);--->bus.request_name(VERSION_BUSNAME);--->phosphor::software::manager::ManagerimageManager(bus);--->phosphor::software::manager::Watchwatch(loop,std::bind(std::mem_fn(&Manager::processImage),&imageManager,std::placeholders::_1));其中，定义了:
conf.set_quoted('SOFTWARE_OBJPATH','/xyz/openbmc_project/software')conf.set_quoted('VERSION_BUSNAME','xyz.openbmc_project.Software.Version')conf.set_quoted('IMG_UPLOAD_DIR',get_option('img-upload-dir'))///tmp/imagesconf.set_quoted('MANIFEST_FILE_NAME',get_option('manifest-file-name'))//MANIFEST实际dbus如下：
~# busctl introspect xyz.openbmc_project.Software.Version/xyz/openbmc_project/software NAME TYPE SIGNATURE RESULT/VALUE FLAGS org.freedesktop.DBus.Introspectable interface---.Introspect method-s-org.freedesktop.DBus.ObjectManager interface---.GetManagedObjects method-a{oa{sa{sv}}}-.InterfacesAdded signal oa{sa{sv}}--.InterfacesRemoved signal oas--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--采取tar命令解压压缩包文件。
2.2phosphor-bmc-code-mgmt-master/bmc/download_manager_main.cpp
代码流程如下:
intmain()--->sdbusplus::server::manager_tobjManager(bus,SOFTWARE_OBJPATH);///xyz/openbmc_project/software--->phosphor::software::manager::Downloadmanager(bus,SOFTWARE_OBJPATH);--->bus.request_name(DOWNLOAD_BUSNAME);//xyz.openbmc_project.Software.Download实际dbus如下图：
~# busctl introspect xyz.openbmc_project.Software.Download/xyz/openbmc_project/software NAME TYPE SIGNATURE RESULT/VALUE FLAGS org.freedesktop.DBus.Introspectable interface---.Introspect method-s-org.freedesktop.DBus.ObjectManager interface---.GetManagedObjects method-a{oa{sa{sv}}}-.InterfacesAdded signal oa{sa{sv}}--.InterfacesRemoved signal oas