Hi everone: hope you are doing well I'm having some difficulties with full system emulation of ARM using gem5. My aim is to change the bus protocols in the ARM system to achieve higher transfer efficiency by linking different devices to different bus protocols. The machine model used is: VExpress_GEM5,I would like to use axi_bus, apb_bus bus models but I don't know how to create them and link them to the devices correctly. My working path: gem\configs\example\arm\device,fs_bigLITTLE.py, using gem5 version 22.1.0.