Hi Fengze, Yeah, there's a lot of complicated and undocumented things you need to do when initializing a CPU.
Here's a couple of pointers that may help. However, this code was written a few years ago and is almost 4000 commits behind, so things have probably changed since then! Code: https://github.com/darchr/gem5/tree/simple-cpu/src/learning_gem5/part4 Notes: https://github.com/darchr/gem5/blob/simple-cpu/src/learning_gem5/part4/notes.rst I am certain that workload stuff has changed since I wrote the above code. Though, I hope that it can help you get started. Cheers, Jason On Wed, Nov 3, 2021 at 3:19 AM Fengze Yu via gem5-users <gem5-users@gem5.org> wrote: > Hi > > I was trying to add a new CPU inherit from BaseCPU: > > class MY_CPU: public BaseCPU > { > public: > > MY_CPU(const MY_CPUParams& p); > ~MY_CPU(){} > ... > private: > ... > } > > but incurs the following running error: fatal: Process system.cpu.workload > is not associated with any HW contexts! > > ... > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > warn: membus.slave is deprecated. `slave` is now called `cpu_side_ports` > Global frequency set at 1000000000000 ticks per second > warn: No dot file generated. Please install pydot to generate the dot file > and pdf. > build/RISCV/mem/mem_interface.cc:793: warn: DRAM device capacity (8192 > Mbytes) does not match the address range assigned (512 Mbytes) > build/RISCV/base/statistics.hh:277: warn: One of the stats is a legacy > stat. Legacy stat is a stat that does not belong to any statistics::Group. > Legacy stat is deprecated. > build/RISCV/arch/riscv/linux/se_workload.cc:60: warn: Unknown operating > system; assuming Linux. > build/RISCV/sim/process.cc:290: fatal: Process system.cpu.workload is not > associated with any HW contexts! > ... > > Did I miss anything essential when creating a new CPU class? > > > Thanks in advance > > Fengze > _______________________________________________ > gem5-users mailing list -- gem5-users@gem5.org > To unsubscribe send an email to gem5-users-le...@gem5.org > %(web_page_url)slistinfo%(cgiext)s/%(_internal_name)s
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