linux-xlnx won't build in devtool

Updated: May 15, 2023

This post is a summary of an error that I hit when trying to use devtool to rebuild the Linux kernel using PetaLinux 2018.2 from Xilinx: "could not find kconf openamp.cfg, included from /opt/pkg/petalinux/components/yocto/source/arm/workspace/sources/linux-xlnx/oe-local-files/openamp.scc."

Steps to Reproduce

1 BUILD THE LINUX KERNEL FROM SOURCE AND SAVE CHANGES

1.1 PULL IN PETALINUX TOOLS

1.1.1 Steps

1. Open a new terminal.

2. Type cd ~/plxprjs/xilinx-zc706-2018.2/

3. Type source /opt/pkg/petalinux/settings.sh

I see:

1.2 PULL IN BITBAKE

1.2.1 Note

I'm placed into ~/plxprjs/xilinx-zc706-2018.2/build/ after this sequence.

1.2.2 Steps

1. Type cd ~/plxprjs/xilinx-zc706-2018.2/

2. Type the following:

source /opt/pkg/petalinux/components/yocto/source/arm/environment-setup-cortexa9hf-neon-xilinx-linux-gnueabi

I see:

source /opt/pkg/petalinux/components/yocto/source/arm/layers/core/oe-init-build-env

I see:

# this ^^^ puts you into PLXPROJ/build

# stay here to run BitBake commands

export PATH=/opt/pkg/petalinux/tools/hsm/bin:$PATH

export BB_ENV_EXTRAWHITE="$BB_ENV_EXTRAWHITE PETALINUX"

1.3 PULL U-BOOT-XLNX INTO DEVTOOL

1.3.1 Steps

1. Type cd ~/plxprjs/xilinx-zc706-2018.2/build/

2. Type devtool modify linux-xlnx

I see:

1.4 MAKE A CHANGE

1.4.1 Steps

1. Type cd /opt/pkg/petalinux/components/yocto/source/arm/workspace/sources/linux-xlnx

2. Type vi init/main.c

3. Make this change:

1.5 BUILD THE CHANGE

1.5.1 Steps

1. Type cd ~/plxprjs/xilinx-zc706-2018.2/build/

2. Type bitbake linux-xlnx

I see:

1.6 EXIT DEVTOOL

1.6.1 Steps

1. Type cd ~/plxprjs/xilinx-zc706-2018.2/build/

2. Type devtool reset --no-clean linux-xlnx

I see:

3. Type cd /opt/pkg/petalinux/components/yocto/source/arm/workspace/sources

4. Type rm-rf linux-xlnx

Reference

Xilinx logo clipped from xilinx.com