> On Nov 3, 2022, at 12:11 PM, d.meneses via groups.io wrote: > > Yes I also believe I'm threading a XY problem. > > Let's simplify my learning and set the goal to: add an UEFI application to OVMF so that it runs natively on startup. > > Does this make more sense? > > I followed the same process and I can use UEFITool to confirm there's an UefiApplication inside the OVMF image. > > How can I make it run? Do you need to run it from FLASH? Or do you just want to run it? What I usually do with QEMU is pass -hda fat:rw:Build/OvmfX64/DEBUG_XCODE5/X64 to mount a directory on my system in QEMU. This should show up in the UEFI Shell as FS0: if you don’t have any other disks. The path is the build output, so you need to match what you built. So DEBUG_GCC??? Vs DEBUG_XCODE, as this path encodes the build target, compiler, etc. Then when you boot to the UEFI Shell you just need to mount the disk and run your app. Fs0: MyApp.efi You can also redirect the text output of your app to a file, and since fs0: is just your build directory you can get the output out of the VM. >From the UEFI Shell you can `reset -s` to shut down the VM. If you place a startup.nsh the UEFI Shell command should run those commands when launched. It is also possible to make a FAT32 disk image and boot your app directly, just like an OS loader[1]. Just copy your app to /EFI/BOOT/BOOTx64.EFI in the disk image and mount the disk image from the QEMU command line. [1] https://uefi.org/specs/UEFI/2.10/03_Boot_Manager.html#removable-media-boot-behavior Thanks, Andrew Fish >