HDL_workflow/microwatt.mdwn

   1 # Build instructions for Microwatt
   2
   3 After installing ghdl-yosys-plugin use schroot to switch environment
   4
   5     schroot -c bullseye_ghdl
   6     git clone https://github.com/antonblanchard/microwatt
   7     export FPGA_TARGET=verilator
   8     make microwatt-verilator
   9
  10 Then run the resulting binary
  11
  12     time ./microwatt-verilator
  13
  14 If everything works correcly it will print out an light bulb in ascii art
  15 with the message Microwatt, it works. On my ASUS KGPE D16 this takes
  16
  17      real       1m4.986s
  18      user       1m4.373s
  19      sys        0m0.013s
  20
  21 ## Building the kernel
  22 On a POWER9 there is no need to install a cross compiler,
  23 you can omit CROSS_COMPILE and ARCH in this case
  24
  25         apt install gcc-powerpc64le-linux-gnu
  26         apt install flex bison
  27         git clone -b microwatt-5.7 https://git.kernel.org/pub/scm/linux/kernel/git/joel/microwatt.git
  28         cd microwatt
  29         wget https://ozlabs.org/~paulus/rootfs.cpio.xz FIXME 404
  30         unxz rootfs.cpio.xz
  31         CROSS_COMPILE="ccache powerpc64le-linux-gnu-" ARCH=powerpc make -j8 O=microwatt microwatt_defconfig
  32         CROSS_COMPILE="ccache powerpc64le-linux-gnu-" ARCH=powerpc make -j8 O=microwatt