Problem about replace SRAM when using Nutshell on pynq-z2 board

[Gwins7]

I'm trying to use Nutshell compiled by Chisel 6.2.0, and boot linux kernel using it on Pynq-z2 board. The SRAM arrays generated by Chisel itself somehow do not function properly, and cause read-0-operation on board, which leads to boot fault. In the former version of Nutshell (compiled by Chisel 3), the "./scripts/vlsi_mem_gen" python script is used to substitute SRAM arrays, and there are "--infer-rw" and "--repl-seq-mem" options in Makefile. I have tried substituting Chisel-6-generated array with vlsi_mem_gen's array manually, and it works. As the process of substitution is deprecated in Chisel 6, what should I do if I want to do this substitution automatically (by changing option or scripts)?