gpio connection with Rocket Chip

[Uzair540]

I want to connect gpio with my rocket chip can you elaborate me which module of verilog I have to target ? These are the module list of generated verilog of rocket chip.
module AXI4Buffer
module AXI4UserYanker
module AXI4Deinterleaver
module AXI4IdIndexer
module TLToAXI4
module AXI4UserYanker_1
module AXI4Fragmenter
module AXI4IdIndexer_1
module AXI4UserYanker_2
module AXI4IdIndexer_2
module AXI4RAM
module AXI4Xbar
module AXI4Buffer_1
module AXI4Fragmenter_1
module AXI4RAM_1
module AXI4Xbar_1
module AXI4Buffer_2
module AXI4Fragmenter_2

[tamood]

@Uzair540 Do not look into emitted Verilog listings. GPIO is connected to rocket-chip with HasPeripheralGPIO and HasPeripheralGPIOImp mix-ins.

[Uzair540]

@tamood I have attached gpio block from sifive to my rocket chip.Can you help me how can I connect my gpio with rocket chip.As When I connect gpio and run rocket chip it is giving me I/O errors as I haven't connect them in code Just below

I have do the following steps
In ExampleRocketSystem I have made the following changes

And in Config subsystem file I made the following changes

If you help me How can I connect gpio So that my I/O reduces