Tianocore/edk2.git/OvmfPkg, branch dependabot/github_actions/actions/setup-python-7

OvmfPkg/IntelTdx: Add memory debug logging support for TDX guests

2026-07-22T09:00:42+00:00

OVMF already supports MemDebugLogLib for capturing firmware debug output in a runtime memory buffer. Align the TDX peiless boot path with OVMF by integrating the same library, so that TDX guests can use memory-based debug logging. In PeilessStartupLib, allocate a runtime buffer for the debug log during PeilessStartup() and copy any early SEC-phase logs from the pre-allocated FDF region into it. Register the early debug log memory region in the TDX metadata as TEMP_MEM so the TDX module accepts it during guest initialization. Move PlatformDxe/Platform.inf from NCCFV to DXEFV because it exposes the memory debug log HOB to the guest. Signed-off-by: Luigi Leonardi

OvmfPkg/MemDebugLogLib: Add MemDebugLogInit/Copy stubs to Null instance

2026-07-22T09:00:42+00:00

The Null instance of MemDebugLogLib only provides MemDebugLogWrite(), MemDebugLogPages(), and MemDebugLogEnabled(). Any module that references MemDebugLogInit() or MemDebugLogCopy() cannot link against the Null instance, forcing the feature to be gated at the build-system level rather than at runtime. Add no-op stubs for MemDebugLogInit() and MemDebugLogCopy(). This will be used by the following commit to add memory debug log support in TDX. Signed-off-by: Luigi Leonardi

OvmfPkg: Introduce a Virtio MMIO probe lib

2026-07-21T10:25:17+00:00

Introduce a Virtio MMIO probe library that discovers virtio-mmio nodes from the FDT and maps their MMIO ranges before the virtio transport driver creates virtio devices and accesses the device MMIO regions. Signed-off-by: Sami Mujawar

OvmfPkg/FdtPciHostBridgeLib: Map PCI MMIO windows in GCD

2026-07-21T10:25:17+00:00

Map the PCI MMIO32 and MMIO64 windows into the GCD memory map after parsing the DT ranges property. This makes the PCI memory apertures available as MMIO regions. Signed-off-by: Sami Mujawar

OvmfPkg/FdtPciHostBridgeLib: Use MapMmioLib for MMIO mapping

2026-07-21T10:25:17+00:00

Replace the local GCD MMIO mapping helper with MapMmioMemory() when mapping the PCI ECAM region and the translated I/O MMIO window. This keeps the FDT PCI host bridge code aligned with the common MMIO mapping helper and avoids duplicating AddMemorySpace() and SetMemorySpaceAttributes() handling. Signed-off-by: Sami Mujawar

OvmfPkg/MapMmioLib: Support runtime drivers

2026-07-21T10:25:17+00:00

Allow MapMmioLib to be consumed by DXE_RUNTIME_DRIVER modules. MapMmioMemory() depends on DXE services, so it cannot map new ranges after ExitBootServices(). Return EFI_ACCESS_DENIED when called at runtime. This allows runtime drivers such as ArmVirtPkg/Library/KvmtoolRtcFdtClientLib to use MapMmioLib for boot-time MMIO setup. Signed-off-by: Sami Mujawar

OvmfPkg/MapMmioLib: Introduce a library for mapping MMIO regions

2026-07-21T10:25:17+00:00

Introduce MapMmioLib to add MMIO regions to the GCD memory map. MapMmioMemory() normalizes the requested range to page boundaries, adds missing MMIO descriptors, and updates attributes for new and existing MMIO descriptors. Existing descriptors of any other type are reported as conflicts. Signed-off-by: Sami Mujawar

OvmfPkg: Resolve GptLib library class

2026-07-20T21:50:57+00:00

GptLib is a new library class consumed both by PartitionDxe (built by essentially every platform) and by DxeTpm2MeasureBootLib. Any platform DSC that builds either module must resolve the GptLib library class, otherwise the build fails with "Instance of library class [GptLib] is not found". Resolve GptLib in each OVMF DSC. Every OVMF DSC builds PartitionDxe. IntelTdx, LoongArchVirt and RiscVVirt additionally link DxeTpm2MeasureBootLib directly; AmdSev, Bhyve, CloudHv, Microvm, OvmfPkgX64 and OvmfPkgIa32X64 pull it in through OvmfTpmSecurityStub.dsc.inc. Out-of-tree platforms consuming either module need the same one-line resolution. Signed-off-by: Richard Lyu

OvmfPkg: document DebugLevel runtime config

2026-07-20T16:53:45+00:00

Add documentation for the DebugLevel runtime config that sets the verbosity of the serial debug log level on ArmVirt. Signed-off-by: Luigi Leonardi

OvmfPkg/QemuFwCfgSimpleParserLib: export QemuFwCfgGetAsString()

2026-07-20T16:53:45+00:00

Make QemuFwCfgGetAsString() a public EFIAPI entry point instead of a STATIC helper, so it can be used by consumers that need the raw fw_cfg string value rather than a parsed boolean or integer. Signed-off-by: Luigi Leonardi