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://git.libre-soc.org/git/microwatt.git
   7     git checkout verilator_trace
   8     export FPGA_TARGET=verilator
   9     make microwatt-verilator
  10
  11 Then run the resulting binary
  12
  13     time ./microwatt-verilator
  14
  15 If everything works correcly it will print out an light bulb in ascii art
  16 with the message Microwatt, it works. On my ASUS KGPE D16 this takes
  17
  18      real       1m4.986s
  19      user       1m4.373s
  20      sys        0m0.013s
  21
  22 ## Building the kernel
  23 On a POWER9 there is no need to install gcc-powerpc64le-linux-gnu,
  24 you can omit CROSS_COMPILE and ARCH in this case
  25
  26         apt install gcc-powerpc64le-linux-gnu
  27         apt install flex bison lz4
  28         git clone -b microwatt-5.7 https://git.kernel.org/pub/scm/linux/kernel/git/joel/microwatt.git
  29         cd microwatt
  30         wget http://ftp.libre-soc.org/rootfs.cpio
  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
  33
  34 This will produce a file
  35         microwatt/arch/powerpc/boot/dtbImage.microwatt