Jimmy's RISC-V Rocket Core Project

This is a RISC-V project of Rocket Core

Configures

• Define design hierarchy, for more design notes, please refer to Notes.md
  • Shell, override shell function if FPAG board is reworked
    • Usually extends a FPGA Shell directly
    • Override some resource, e.g. add daughter board, reworked pin out etc.
  • Chip, top level of an FPGA chip, same board project can be reused
    • Connect FPGA shell resource to platform design here, e.g. reset, clock, pll etc.
    • Chip cannot generate RTL by itself since it depend on FPGA Shell resource
  • Platform, which include all design IPs here, this platform can be reused by other ASIC/FPGA project
    • New module of System
    • AXI4 base IPs can be placed here
    • Tie off unused pins here
  • System, extends RocketSubsystem, which include all SoC design.
    • It should be ready reused by and other project base on rocket core(s)
    • Override design function here
    • TestHarness takes this module as DUT, for verification test

ASIC Compose Flow

• Generate RTL for ASIC flow

  make -f Makefile.asic verilog

  All SRAM IPs is described *.conf file

• *.behav_srams.v is SRAM IP behavior model

• Release all files to ASIC flow by using

  make -f Makefile.asic release

FPGA Compose Flow

• Default FPGA board

  • Generate FPGA RTL for a common FPGA platform by

    make -f Makefile.examplefpga verilog

  • Clock, reset, PLL may need to be done by manually FPGA flow

• MiZ701N

  • Taobao shop is here

  • Generate FPGA bitstream

    make -f Makefile.miz701n bit

  • FPGA Emulation

    • Program the FPGA device with the bit file, which is placed in builds/miz701n/obj/*.bit

    • Launch OpenOCD

      openocd -f <jtag_interface.cfg> -f <board.cfg>

      Notes for W-JTAG-SJ

      1. Taobao shop of W-JTAG-SJ is here
      2. Compile and use this openocd, branch w-jtag-sj
      3. Interface file of w-jtag-sj.cfg can be found under openocd/tcl/interface

    • Launch GDB

      riscv64-unknown-elf-gdb <your_program> 

      In the GDB shell

      (gdb) target remote localhost:3333
      (gdb) load