Microchip SAMA5 Buildroot External For WILC1000/3000

This buildroot external includes Microchip packages, patches, setup, and configuration to create the SAMA5 demo. This project provides an extension to buildroot to support these customizations outside of the standard buildroot tree.

Install System Dependencies

The external is tested on Ubuntu 16.04 LTS. The following system build dependencies are required.

sudo apt-get install subversion build-essential bison flex gettext \
libncurses5-dev texinfo autoconf automake libtool mercurial git-core \
gperf gawk expat curl cvs libexpat-dev bzr unzip bc python-dev

In some cases, buildroot will notify that additional host dependencies are required. It will let you know what those are.

Buildroot Dependencies

This buildroot external requires a new version of buildroot equal to or greater than 2018.02-at91.

Build

Clone, configure, and build. When building, use the appropriate defconfig in the buildroot-external-wilc/configs directory for your board.

git clone https://github.com/LeoZhang-Atmel/buildroot-external-wilc.git
git clone https://github.com/linux4sam/buildroot-at91.git -b linux4sam_6.0
cd buildroot-at91
BR2_EXTERNAL=../buildroot-external-wilc/ make sama5d27_som1_ek_wilc_defconfig
make

The resulting bootloader, kernel, and root filesystem will be put in the 'output/images' directory. There is also a complete sdcard.img.

Optionally Configure Packages and Kernel

Userspace packages and the Linux kernel, for example, can be optionally selected and configured using buildroot.

To configure userspace packages and build:

make menuconfig
make

To configure the kernel and build:

make linux-menuconfig
make

Create a list of software licenses used:

make legal-info

Create an SD Card

A SD card image is generated in the file sdcard.img. The first partition of this image contains a FAT filesystem with at91bootstrap, u-boot, a u-boot env, DTB files, and kernel. The second partition contains the root filesystem. This image can be written directly to an SD card.

You need at least a 1GB SD card. All the data on the SD card will be lost. Find the device node name for your card. To copy the image on the SD card:

cd output/images
sudo dd if=sdcard.img of=/dev/sdX bs=1M

Another method, which is cross platform, to write the SD card image is to use Etcher.

For more information on how these components are generated and what makes up a bootable SD card, see SDCardBootNotice.

Documentation

For more information on using and updating buildroot, see the buildroot documentation.

License

This project is licensed under the GPLv2 or later with exceptions. See the COPYING file for more information. Buildroot is licensed under the GPLv2 or later with exceptions. See the COPYING file in that project for more information.