NXP Semiconductors Layerscape LS1028A BSP, Руководство пользователя, Страница: 27 / 136

2. Configure url/branch/tag/commit info for new <component_name>in configs/build_xx.cfg, default remote. Component git
repository is specified by GIT_REPOSITORY_URL by default if <component>_url is not specified, user also can directly
create the new component git repository in packages/apps directory.
3. Add build support of new component in packages/apps/Makefile..
4. Run flex-builder -c <component-name> -a <arch>' to build the new component.
5. Run flex-builder -i merge-component -a <arch> to merge the new component package into target distro userland.
How to update existing Linux kernel with new custom kernel for Ubuntu on target board in case of non secure boot
User can quickly install custom kernel and lib modules after Ubuntu had been deployed in SD card on target board in case of non
secure boot, follow the steps below.
After modify Linux kernel source code in $FBDIR/packages/linux/<kernel-repo> on demand, rebuild kernel
as below
$ flex-builder -c linux:custom (optional, to customize kernel config in interactive menu)
$ flex-builder -c linux
$ flex-builder -i mkbootpartition -a arm64
The new kernel image tarball $FBDIR/build/images/linux_4.14_LS_arm64_<timestamp>.tgz will be generated.
Then login Ubuntu system on target board, update kernel image (take LS1028ARDB for example) as below:
root@localhost:/# dhclient -i eno0
root@localhost:~# cd /
root@localhost:/# wget <path>/linux_4.14_LS_arm64_<timestamp>.tgz (or by scp command)
root@localhost:/# tar xf linux_4.14_LS_arm64_<timestamp>.tgz
root@localhost:/# reboot
System will reboot and automatically boot to Ubuntu with new custom kernel.
Rebuild images after modifying the source code of NXP user space components locally
Flexbuild supports building specific components after the source code is changed. Flexbuild then deploys the changes to the
target board.
1. Modify source code of user space components in the directory packages/apps/<apps-component> on demand.
2. Clean old build footprint under user space component.
$ make clean -C $FBDIR/packages/apps/<app-component>
$ rm -rf $FBDIR/build/apps/components_LS_arm64
3. Build the user space component and generate the compressed component tarball.
$ flex-builder -c <apps-component> -a arm64
$ flex-builder -i compressapps -a arm64
4. Upload and deploy the newly generated app_components_LS_arm64.tgz to target board on which Ubuntu distro had been
installed in SD card.
=> run sd_bootcmd (or run xspi_bootcmd to enter Tiny distro Linux environment)
Download app_components_LS_arm64.tgz via wget or scp command
root@TinyDistro:~# tar xf app_components_LS_arm64.tgz
root@TinyDistro:~# cp -a components_LS_arm64/* /run/media/mmcblk0p3
root@TinyDistro:~# reboot
How to build LS1028A BSP with Flexbuild
Layerscape LS1028A BSP User Guide, Rev. 0.3, 04/2019
NXP Semiconductors
27