Post-Silicon Code Coverage for Multiprocessor System-on-Chip Designs

作者：Balston Kyle^*; Karimibiuki Mehdi; Hu Alan J; Ivanov Andre; Wilton Steven J E

来源：IEEE Transactions on Computers, 2013, 62(2): 242-246.

DOI：10.1109/TC.2012.163

• FPGA emulation
• pre-silicon validation
• post-silicon validation
• code coverage

Effective techniques for post-silicon validation are required to better evaluate functional correctness of increasingly complex multi and many-core SoCs. However, there is little data evaluating the coverage of post-silicon validation efforts on industrial-scale designs. In this paper, we address this knowledge gap by instrumenting a nontrivial SoC with on-chip coverage monitors to measure the coverage achieved by typical post-silicon validation tests, such as booting the operating system (OS). We compare coverage achieved pre and post-silicon, and also measure the area overhead required to monitor post-silicon coverage. Our results show that the typical test of booting the OS often achieves high coverage, well correlated to what is achieved by pre-silicon directed tests, but in some blocks the coverage can be low or markedly different between pre and post-silicon, highlighting the importance of post-silicon validation in general and post-silicon coverage measurement in particular.

• 出版日期2013-2