For recent X86 CPUs, the 0x15 CPUID instruction will return Time Stamp
Counter Frequence. For CPUs that do not support this instruction, EDK2
must include a different library which is the reason why this must be
configured at build time.
If this is enabled, and the CPU doesn't support 0x15, it will fail to
boot. If is not enabled, and the CPU does support 0x15, it will still
boot but without support for the leaf. Consequently, disabled it by
default.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I4f0f43ce50c4f6f7eb03063fff34d015468f6daa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65950
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Upstream edk2 doesn't work, but we still have the option for it
for testing.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I6ec9f4746640baa030762650ab7b83d85ab8c1e1
Reviewed-on: https://review.coreboot.org/c/coreboot/+/67780
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Until recently, there were two options to build edk2, UefiPayloadPkg and
CorebootPayloadPkg. Now, there is only one, UefiPayloadPkg but soon,
there will be Universal Payload.
It makes more sense, as the official edk2 repository doesn't work with
coreboot, to have the build target and repository separate. That will
allow for building either UefiPayloadPkg or Universal Payload from the
official repository, MrChromebox' fork or a custom repository.
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: If7f12423058ef69838741f384495ca766ccea083
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66080
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
coreboot uses TianoCore interchangeably with EDK II, and whilst the
meaning is generally clear, it's not the payload it uses. EDK II is
commonly written as edk2.
coreboot builds edk2 directly from the edk2 repository. Whilst it
can build some components from edk2-platforms, the target is still
edk2.
[1] tianocore.org - "Welcome to TianoCore, the community supporting"
[2] tianocore.org - "EDK II is a modern, feature-rich, cross-platform
firmware development environment for the UEFI and UEFI Platform
Initialization (PI) specifications."
Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I4de125d92ae38ff8dfd0c4c06806c2d2921945ab
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65820
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2022-08-13 16:35:18 +00:00
Renamed from payloads/external/tianocore/Kconfig (Browse further)
Sean Rhodes