How/where to send UEFI/EDK2 Core code and Open Platform Package patches.
Submit all patches through the EDK2 Developer Mailing list
https://lists.01.org/mailman/listinfo/edk2-devel
Note: Additional contribution information can be found here in each package folder (Contribution.txt)
Submit all patches through the Linaro UEFI Mailing list
https://lists.linaro.org/mailman/listinfo/linaro-uefi
Note: Plans underway for moving this under Tianocore gitub, for now this is the contribution process.