You’re trying to run a full-system simulation there and that requires specifying a disk image. The \`src/base/loader/image_file_data.cc:110: fatal: fatal condition fd < 0 occurred: Failed to open file None.\` error you are receiving is because you didn’t specify this.
I’d recommend using the gem5 standard library: https://www.gem5.org/documentation/gem5-stdlib/overview. If you go through this tutorial you can see how to setup a gem5 simulation and run some simple binaries in SE mode.
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