My personal test tools used under UEFI Shell.
How to build it.
1,Download https://github.com/tianocore/edk2 and get ready for UEFI development.
2,Copy KrishnaTestPkg to your workspace(usually it is edk2-root-dir).
3,Run "edksetup.bat" to construct build environment.
4,Run "build -p KrishnaTestPkg\KrishnaTestPkg.dsc -a X64" to build it.
How to using it.
Please refer user-guides under document dir.
This tool(ReadHistory.efi) has got some idea from Z.t(http://www.lab-z.com/), thank you very much.