1. Libreroot – Deblobbing Buildroot
GNU Hackers Meeting 2017
Tobias Platen

2. Buildroot Tool to generate embedded Linux systems [sic]
Automates cross-compilation using the Linux build system
Downloads sources via http or git checkout
Supports many Single Board Computers
Also includes blobs other than those from Linux
Displays licences and copyright holders of all packages
No reproducible builds yet, offline building works

3. Blobs in Buildroot
Kernel is not GNU Linux-Libre, downloaded from Kernel.org
Nonfree TI SGX graphics drivers in beaglebone_qt5_defconfig
Wifi Firmware for many different chipsets
Firmware for Raspberry Pi (bootcode.bin and Bluetooth)
Many X11 Fonts are non-free
Software Patents and DRM in Audio and Video Codecs
Many companies add their own proprietary packages

4. Automated Deblobbing Enumerate all packages and their licenses
Blacklist known non-free packages
Whiltelist for known free licences and free packages
Manually verify remaining packages, some could be non-free
Python script performs removal of offending things
Allow users to report non-free packages to be removed
git clone

5. Use Cases Telephony devices that Respect Your Freedom
Crosscompile packages for Parabola GNU/Linux ARM
Small systems that fit into the Thinkpads 7.5 M flash memory
Porting the GNU Hurd to other architectures
Run programs in a chroot environment
Educational use
Testing modified kernels, glibc and other low level software

6. Supported Hardware Beaglebone Black with Audio Cape and HDMI
Other Ti Omap based devices including DragonBox Pyra
Allwinner SoCs (A13/A20) including video decoder hardware
Rasperry Pi with experimental free firmware replacement
GNU Internet of Things (Extensa GCC needed)
Upcoming RISC-V based freedom SoCs (SiFive)

7. Phreedom2600 Webshop Webshop https://shop.phreedom2600.net/
AGPL, written using Python and Flask
GNU Taler support may be added in the future
Beaglebone Black and SDcards with Parabola GNU/Linux
Analog Telephone Adapters with a free hardware design
Board support package will be based on Libreroot
Respects your freedom certification pending for Knochenreiter

8. Prototype of Libreroot based ATA