Browsing by Author "Özkurt, Ö."

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    Enabling difference-based dynamic partial self reconfiguration for large differences
    (IEEE, 2013) Gören, S.; Özkurt, Ö.; Türk, Y.; Yıldız, A.; Uğurdağ, Hasan Fatih; Electrical & Electronics Engineering; UĞURDAĞ, Hasan Fatih
    This paper presents a new Dynamic Partial Self Reconfiguration (DPSR) flow for Xilinx FPGAs. Leveraging the Xilinx FPGA Editor and PlanAhead tools, we provide two implementation approaches that enable partial reconfiguration for large configuration changes without Xilinx's paid tool. The flow is difference-based but still allows a modular design, which is made up of Partial Reconfiguration (PR) modules and a static design. It works regardless of the amount of difference between PR modules. We call this flow DPSR-LD, where LD stands for Large Differences. DPSR-LD is an enabler especially for Spartan-6 FPGA family., as Xilinx currently supports PR on Spartan-6 only through the difference-based flow and only for small differences. DPSR-LD also includes an ICAP controller that makes DPSR possible and offers bitstream compression.
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    FPGA bitstream protection with PUFs, obfuscation, and multi-boot
    (IEEE, 2011) Gören, S.; Özkurt, Ö.; Yıldız, Abdullah; Uğurdağ, Hasan Fatih; Electrical & Electronics Engineering; UĞURDAĞ, Hasan Fatih; Yıldız, Abdullah
    With the combination of PUFs, obfuscation, and multi-boot, we are able to do the equivalent of partial bitstream encryption on low-cost FPGAs, which is only featured on high-end FPGAs. Low-cost FPGAs do not even have built-in support for encrypted (full) bitstreams. Our particular PUF implementation does not steal valuable FPGA real estate from the actual design with the help of multi-boot. We favor multi-boot over self partial reconfiguration as it is easier to implement.