edk2-nvidia-202506.3 (r38.4)

Release Notes

New Features

• T26x Per-Boot-Chain GPT: Capsule updates support partition layout changes.
• PCIe Controller:
  • PERST asserted at UEFI exit (avoids USB errors).
  • Supports all 32-bit PCI memory ranges.
  • 100ms delay after link training per spec.
• I2C: Device initialization from DTB.
• OP-TEE fTPM: Added FF-A support; refactored SMC handling.
• NvDisplayControllerDxe:
  • Thor display clocks can be disabled.
  • HW info (clocks, bandwidth) updated in DT.
  • HW-specific context struct added.
• ISP: Floorsweeping support in overlays.
• FMP: DTS files for image type ID (T234/T264).
• FF-A MEM_SHARE ABI: Added; enables var store protection on T264.
• Build System:
  • Added "simple" build configs for T23x/T26x.
  • Renamed "embedded" build class to "minimal".
  • Added t26x_general_igx.defconfig.
  • GitHub workflow auto-builds all defconfigs.

Improvements

• Boot Menu: Handles disabled menu/apps gracefully.
• Shell PCD: Follows Kconfig setting.
• RCM: Non-secure variable support enabled.
• EqosDeviceDxe: Updated nvethernetrm; stats initialized.
• Memory Handling: Improved init and freeing in PlatformBm.c.
• FmpDeviceLib: Avoids uninitialized pointer.
• Thermals: T264 cooling-device list floorsweeping.

Bug Fixes

• MMU: Prevents disable during table updates.
• STMM: Uses NV_ASSERT for errors.
• Status Codes: OemDescStatusCodeDxe ignores debug logs.
• BPMP: Proper token/status initialization.
• QSPI: Improved tap delay handling and reset checks.
• OP-TEE: Correct service ID; return value checks.
• Measurement Partition: Cache reset on erase.
• Var Store: Explicit reserved partition erase.
• PCIe: Splits 32-bit memory aperture.
• UFS: Conditional init for T26x.
• NvDisplayControllerDxe:
  • Keeps EMC floor if display active.
  • Forces max EMC during UEFI.
  • Allows null pointer for DT property truncation.

Maintenance

• NvDisplayControllerDxe: Refactored clock functions.
• EqosDeviceDxe: Code cleanups.