BELK-TN-006: Using PetaLinux to Build BELK/BXELK Software Components

Info Box Applies to Bora Applies to BORA Xpress

History

Version	Date	Notes
1.0.0	September 2018	First public release

Introduction

As explained here, BELK/BXELK structure is not based on PetaLinux build system. Instead, BELK/BXELK make use of a standardized Yocto-based build system to build all the software components—U-Boot, Linux kernel, and root filesystem—that run on the Processing System (PS). This choice is more flexible and more modularized but it requires a little bit more knowledge of embedded Linux systems.

That being said, there are cases in which it can be convenient to build such components with PetaLinux build system, however. This technical note shows how to build the Linux kernel image released with BELK/BXELK with PetaLinux build system.

The procedure was tested with the following configuration.

Component	Version
PetaLinux	2017.2
BELK/BXELK	4.0.0

Building the Linux kernel

petalinux-create --type project --template zynq --name bora1

petalinux-config --get-hw-description=/home/dvdk/devel/bora/bora-minimal/bora-minimal.sdk/

kernel directory

DTS include directory

Add in build/conf/plnxtool.conf LINUX_VERSION_EXTENSION = "-belk-4.0.0"

dvdk@osboxes:~/devel/bora/prj/bora1/components/ext_sources/linux-xlnx$ cd arch/arm/configs/ dvdk@osboxes:~/devel/bora/prj/bora1/components/ext_sources/linux-xlnx/arch/arm/configs$ rm xilinx_zynq_defconfig dvdk@osboxes:~/devel/bora/prj/bora1/components/ext_sources/linux-xlnx/arch/arm/configs$ ln -s bora_defconfig xilinx_zynq_defconfig dvdk@osboxes:~/devel/bora/prj/bora1/components/ext_sources/linux-xlnx/arch/arm/configs$ ll xilinx_zynq_defconfig lrwxrwxrwx 1 dvdk dvdk 14 set 21 10:30 xilinx_zynq_defconfig -> bora_defconfig

project-spec/meta-user/conf/petalinuxbsp.conf KERNEL_DEVICETREE = "bora.dtb"