HDL_workflow/microwatt.mdwn

   1 # Build instructions for Microwatt
   2
   3 TODO integrate from <https://libre-soc.org/irclog/%23libre-soc.2022-01-26.log.html>
   4
   5 After installing ghdl-yosys-plugin use schroot to switch environment
   6
   7     schroot -c bullseye_ghdl
   8     git clone https://git.libre-soc.org/git/microwatt.git
   9     git checkout verilator_trace
  10     export FPGA_TARGET=verilator
  11     make microwatt-verilator
  12
  13 Then run the resulting binary
  14
  15     time ./microwatt-verilator
  16
  17 If everything works correcly it will print out an light bulb in ascii art
  18 with the message Microwatt, it works. On my ASUS KGPE D16 this takes
  19
  20      real       1m4.986s
  21      user       1m4.373s
  22      sys        0m0.013s
  23
  24 ## Building the kernel
  25 On a POWER9 there is no need to install gcc-powerpc64le-linux-gnu,
  26 you can omit CROSS_COMPILE and ARCH in this case
  27
  28         apt install gcc-powerpc64le-linux-gnu
  29         apt install flex bison lz4
  30         git clone -b microwatt-5.7 https://git.kernel.org/pub/scm/linux/kernel/git/joel/microwatt.git
  31         cd microwatt
  32         wget http://ftp.libre-soc.org/rootfs.cpio
  33         CROSS_COMPILE="ccache powerpc64le-linux-gnu-" ARCH=powerpc make -j8 O=microwatt microwatt_defconfig
  34         CROSS_COMPILE="ccache powerpc64le-linux-gnu-" ARCH=powerpc make -j8 O=microwatt
  35
  36 This will produce a file
  37         microwatt/arch/powerpc/boot/dtbImage.microwatt