24.18. gem5 ARM platforms

The gem5 platform is selectable with the --machine option, which is named after the analogous QEMU -machine option, and which sets the --machine-type.

Each platform represents a different system with different devices, memory and interrupt setup.

TODO: describe the main characteristics of each platform, as of gem5 5e83d703522a71ec4f3eb61a01acd8c53f6f3860:

  • VExpress_GEM5_V1: good sane base platform

  • VExpress_GEM5_V1_DPU: VExpress_GEM5_V1 with DP650 instead of HDLCD, selected automatically by ./run --dp650, see also: gem5 graphic mode DP650

  • VExpress_GEM5_V2: VExpress_GEM5_V1 with GICv3, uses a different bootloader arm/aarch64_bootloader/boot_emm_v2.arm64 TODO is it because of GICv3?

  • anything that does not start with: VExpress_GEM5_: old and bad, don’t use them

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