Add support for building iPXE as an EFI target and including it in
the EDK2 payload as a boot option. This allows network booting
directly from the UEFI boot menu without requiring a separate iPXE
ROM file, as it is integrated into the payload.
As the required payload-side changes are not yet upstream, guard
the option on !EDK2_REPO_OFFICIAL.
Adjust PXE Kconfig defaults so that PXE is built from source as
ipxe.efi when EDK2_ENABLE_IPXE is selected.
TEST=build/boot iPXE from edk2 boot menu on google/fizz.
Change-Id: Ied61c7b8aa7a34261d6c6f7fd089b1affdc7d3f6
Signed-off-by: Michał Kopeć <michal.kopec@3mdeb.com>
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82721
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Reviewed-by: Walter Sonius <walterav1984@gmail.com>
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