bootable_clock

A clock that displays time having booted from EFI.

• It is x86_64 code built with FASM.
• Needs qemu and ovfm.
• It uses UEFI spec 2.8.

1. Create a directory called drive
2. Assemble like fasm clock_fasm.asm drive/clock
3. Run qemu like qemu-system-x86_64 -bios /usr/share/qemu/OVMF.fd -net none -drive format=raw,file=fat:rw:drive/ -monitor stdio
4. Once you have the EFI console on qemu, run it like this FS0:\clock.
5. If you want it to run automatically, replace ret with jmp $ in main, assemble & place the binary at this location/name drive/EFI/BOOT/BOOTx64.EFI.