Worked on the flipperdevices/u-boot repository to enable OP-TEE support for RISC-V platforms, focusing on security and deployment reliability. Developed features allowing configurable load addresses and integrated OP-TEE OS image loading via binman, enhancing flexibility for downstream integrations. Improved memory handling by setting a default 64-byte cache line size in Kconfig, which aligns with RVA23U64 profile requirements and optimizes performance. Utilized C, DTS, and Kconfig to implement these changes, emphasizing maintainability through traceable patch-level documentation. The work addressed feature enablement rather than bug fixes, demonstrating depth in embedded systems, device tree configuration, and kernel-level performance tuning for RISC-V.