Design Concepts for a Virtualizable Embedded MPSoC by Alexander Biedermann

By Alexander Biedermann

Alexander Biedermann offers a well-known hardware-based virtualization method, that can remodel an array of any off-the-shelf embedded processors right into a multi-processor approach with excessive execution dynamism. in line with this technique, he highlights ideas for the layout of strength acutely aware platforms, self-healing structures in addition to parallelized platforms. For the latter, the unconventional so-called Agile Processing scheme is brought through the writer, which permits a unbroken transition among sequential and parallel execution schemes. The layout of such virtualizable platforms is additional aided by way of creation of a committed layout framework, which integrates into current, advertisement workflows. consequently, this e-book presents entire layout flows for the layout of embedded multi-processor systems-on-chip.

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7 In its default configuration, the MicroBlaze features 32 general purpose registers as well as the MSR. Instead of 33 consecutive reads, 1 read would be sufficient to extract the complete context. 1: Comparing Static and Virtualizable 3-Processor Solutions for a Virtex-5 LX110T FPGA. Conventional System SystemȱFrequency Resource Overhead Virtualizable System 125ௗMHz 96ௗMHz — 4,649ௗLUT 3,222ௗFF The TCMs are implemented in flip-flop memory. The overhead introduced by the Virtualization Layer occupies just about 5 % of the available resources on the employed Virtex-5 LX110T FPGA.

Otherwise, the instruction in the delay slot would be marked to be the instruction to be executed right after the task’s reactivation. While this would be the correct address, the program would then continue with the instruction following the delay slot. The original branch target addressed by the branch instruction would be lost. In delaying the procedure by one clock cycle, i. , by interrupting the execution after the delay slot entered the pipeline, the instruction at which the task’s execution will resume is the one addressed by the branch instruction.

Mem. Ctrl. Mem. Ctrl. Mem. Ctrl. MicroBlaze Soft-Core Processor MicroBlaze Soft-Core Processor R1: 0x 00 00 00 FF R2: 0x 00 00 00 CC R1: 0x 00 00 00 17 R2: 0x 00 00 00 CC R31: 0x 00 00 0F 00 R31: 0x 00 00 0F 00 MSR: 0x 10 01 01 01 MSR: 0x 10 01 01 11 … (a) Point in Time t1 . … (b) Point in Time t2 . 4: Dynamic Context of a Task over Time. Upon this task’s reactivation, the content is read back into the processor’s register set. Accordingly, the proposed virtualization solution aims at extracting a task’s context during the deactivation phase and at restoring this context during its reactivation.

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