MsvmPkg/AARCH64: Make Hyper-V optional#89
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This needs #86 to actually work. |
Add PcdHvEnabled so the AARCH64 firmware can boot on platforms without Hyper-V. The loader passes an MSVM_SEC_PLATFORM_TYPE value in x2 at SEC entry (HyperV=0, Generic=1). SEC validates the value and installs a PPI. PlatformPei reads the PPI and sets PcdHvEnabled, which gates: - SetGuestOsId hypercall in SEC - EfiHvDxe initialization (exits early when disabled) - CrashLib VP register writes (PSCI reset and BiosDevice diagnostics still function) - Hypervisor vendor identity in FACP Config.c validates that VMBus is not enabled when Hv is disabled. Also restructure EventLogDxe to locate the IVM protocol before installing its own protocols, and delete SecEntry.masm (MSVC ARM64 toolchain is no longer supported). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Add PcdHvEnabled so the AARCH64 firmware can boot on platforms without Hyper-V.
The loader passes an MSVM_SEC_PLATFORM_TYPE value in x2 at SEC entry (HyperV=0, Generic=1). SEC validates the value and installs a PPI. PlatformPei reads the PPI and sets PcdHvEnabled, which gates:
Config.c validates that VMBus is not enabled when Hv is disabled.
Also restructure EventLogDxe to locate the IVM protocol before installing its own protocols, and delete SecEntry.masm (MSVC ARM64 toolchain is no longer supported).