note_br

blackbox ~ # login user

* Setup output folder
$ mkdir br_ppc64

* Get sources
$ wget https://buildroot.uclibc.org/downloads/snapshots/buildroot-snapshot.tar.bz2

* Extract
$ tar xf buildroot-snapshot.tar.bz2

* Move into
$ cd buildroot

* We build out-of-tree, just setup once, don't bother saving now
$ make O=/path/to/your/output/folder

* Move back, now we have the Makefile to build out-of-tree!
$ cd ../br_ppc64

### we TARGET a (real or emulated) pp64
* Import a cfg
make defconfig BR2_DEFCONFIG=/path/to/valid/buildroot/defconfig

* Make changes
make menuconfig

### build
* We build kernel and initramfs as compressed cpio
$ make

### Optional
* Strip kernel
$ export PATH=${PATH}:/path/to/br_ppc64/host/usr/bin
$ powerpc64-linux-strip -s images/vmlinux

* Or
$ host/usr/bin/powerpc64-linux-strip -s images/vmlinux


### Booting on real TARGET
* Use current bootloaded (yaboot, GRUB2)
* From OpenFirmware (Forth command prompt, TFTP)


### Emulating
* Test on emulated qemu-system-TARGET
qemu-system-ppc64 \
  -kernel images/vmlinux \
  -initrd images/rootfs.cpio.xz \
  -vnc :2 -vga std -m 512 \
  -netdev user,id=net0 -device virtio-net-pci,netdev=net0 \
  -device virtio-keyboard-pci

### Now bootstrap Fedora ppc64
* Todo