Comment 4 for bug 1811496

Note that this grub entry already shows up in UEFI and is not working at all (since it's just linux16).
So making it work under UEFI, even with secure boot disabled, is definitely an improvement.

Additionally, four days ago, the developer of ipxe mentioned on IRC that:
> (02:44:57 πμ) mcb30: I finally managed to get my new UEFI Secure Boot key registered with Microsoft's new UI
> (02:46:52 πμ) mcb30: As I'm about to start submitting https://github.com/ipxe/ProxyLoaderPkg for signing, I discover that the whole Coverity Scan service went offline last week, so I have no static analysis results to show for the submission

I believe that secure boot support in iPXE may take some time, but it'll be available eventually.