Worked on aligning the Board Support Package (BSP) in the levizh/rt-thread repository with the latest Phytium SDK, focusing on supporting both AArch32 and AArch64 architectures. The work involved updating BSP configuration, kernel settings, and peripheral driver support, as well as cleaning up deprecated configurations to improve maintainability and reduce upgrade risks. Enabled symmetric multiprocessing (SMP) and CPU usage tracking to enhance multi-core scheduling visibility. Used C, Kconfig, and YAML to implement these changes, ensuring build stability and traceability for future audits. The updates provided a foundation for more robust cross-architecture embedded development and streamlined future SDK integration.