Build instructions

How to build EdgeBSD/lm32:

• Fetch the source:

  $ git clone http://git.edgebsd.org/EdgeBSD/edgebsd-src.git

• Go to my branch:

  $ cd edgebsd-src && git checkout fallen-port-milkymist

• Build the lm32 cross toolchain:

  $ ./build.sh -m milkymist -U tools

• Build EdgeBSD kernel:

  $ ./build.sh -m milkymist -U kernel=GENERIC

Note, if you are rebuilding after a modification or a git pull, this is faster:

$ ./build.sh -m milkymist -U -u kernel=GENERIC

Test instructions

Build Qemu for Milkymist SoC with support for lm32-mmu:

$ git clone https://github.com/fallen/qemu.git
$ cd qemu
$ ./configure --target-list=lm32-softmmu
$ gmake

Run EdgeBSD/lm32 in qemu:

$ ./lm32-softmmu/qemu-system-lm32 -M milkymist -cpu lm32-full-mmu -nographic -kernel /path/to/edgebsd-src/sys/arch/milkymist/compile/obj/GENERIC/netbsd

Debug with Qemu and GDB:

• Build EdgeBSD kernel with debug information:

  $ DEBUG=-g ./build.sh -m milkymist -U kernel=GENERIC
  $ ./lm32-softmmu/qemu-system-lm32 -M milkymist -cpu lm32-full-mmu -nographic -s -S -kernel /path/to/edgebsd-src/sys/arch/milkymist/compile/obj/GENERIC/netbsd.gdb
  $ gdb -x /path/to/edgebsd-src/sys/arch/milkymist/compile/obj/GENERIC/.gdbinit /path/to/edgebsd-src/sys/arch/milkymist/compile/obj/GENERIC/netbsd.gdb

  and then inside gdb:

   target remote :1234