edk2-nvidia-202603.0

New Features

• AVB: Enable AVB UI to display a warning picture for 5 seconds based on AVB validation result before booting to kernel
• FwImage: Add EraseBlockSize field to FwPartition and FwImage attributes, allowing FmpDeviceLib to use the actual flash erase block size to optimize capsule update writes
• edk2-stable202505: Upgrade to edk2-stable202505

Performance Improvements

• Capsule Update: Skip partition writes when the target already contains the correct data, reducing capsule update time

Bug Fixes

• NIC Boot Filtering: Fix hex input handling for PCIe segment/bus/device/function values, which were incorrectly treated as decimal
• StandaloneMM (T234): Include header size in MeasSize for forward compatibility
• TH500: Reduce HTTP buffer size for boards with limited network bandwidth
• PCIe: Fix integer overflow in bounds check when Register + Length exceeds maximum value
• XusbControllerDxe: Add NULL checks and bounds validation for USB descriptor array accesses
• EQOS / PHY: Add status checks for all PHY register read operations across multiple PHY drivers to prevent use of uninitialized data
• Display: Initialize variables and add ROM data validation in NvDisplayController, NvDisplayControllerT234, NvDisplayControllerT264, and NonDiscoverablePciDeviceIo
• Device Tree: Add NULL checks after memory allocation and initialize variables in TegraDeviceTreeOverlayLib and DeviceTreeHelperLibParser
• Security: Add explicit error checks after ASSERT macros in VarIntCheck, UserAuthenticationMm, and NvVarIntLibrary to ensure correctness in release builds
• StandaloneMM: Add variable initialization and error checks in StandaloneMmOpteeLib, StandaloneMmCoreEntryPoint, and PrePiMemory for release build correctness
• Platform: Initialize variables in DeviceDiscoveryLib, CommonFloorSweepingLib, and RegulatorDxe
• Utility Libraries: Add defensive programming to BaseDebugLibSerialPort, DebugLogScratchRegLib, QspiControllerLib, WildcardStringLib, ConfigurationManagerDataLib, and UfsControllerDxe

Deprecations

• T410: The T410 platform is deprecated as of this release and will no longer be tested.

Refactoring and Maintenance

• FdtLib: Migrate from deprecated EmbeddedPkg/Library/FdtLib to MdePkg/Library/BaseFdtLib (update headers, API calls, and byte conversion functions)
• L4TLauncher: Replace memcpy with CopyMem() and strlen with AsciiStrLen following FdtLib migration