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This commit protects the core_busy_o signal using a multi-bit encoding to reduce the chances of an adversary for glitching this signal to low, thereby putting the core to sleep and e.g. not handling an alert. Without this commit, the glitch would only be detected once both the main core and the shadow core wake up again and the comparison of the core_busy_o signals continues. This resolves lowRISC/Ibex#1827. Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org> |
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fpga/artya7 | ||
simple_system | ||
sw |