Configuring Project Components - 2021.2 English

PetaLinux Tools Documentation: Reference Guide

Document ID
UG1144
Release Date
2021-10-27
Version
2021.2 English

If you want to perform advanced PetaLinux project configuration such as enabling Linux kernel options or modifying flash partitions, use the petalinux-config tool with the appropriate -c COMPONENT option.

Important: Only Xilinx® drivers or optimizations in the Linux kernel configuration are supported by Xilinx technical support. For more information on Xilinx drivers for Linux, see https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841873/Linux+Drivers.

The examples below demonstrate how to use petalinux-config to review or modify your PetaLinux project configuration.

  1. Change into the root directory of your PetaLinux project.
    $ cd <plnx-proj-root>
  2. Launch the top level system configuration menu and configure it to meet your requirements:
    $ petalinux-config
  3. Launch the Linux kernel configuration menu and configure it to meet your requirements:
    $ petalinux-config -c kernel
  4. Launch the root file system configuration menu and configure it to meet your requirements:
    $ petalinux-config -c rootfs
  5. Use --silentconfig for the components when you do not have Kconfig/Menuconfig support or to skip the launching of configuration menu
    $ petalinux-config -c <COMPONENT> --silentconfig

Warning Message for petalinux-config or petalinux-build Commands

The following warning message appears when you run the petalinux-config or petalinux-build for components (Ex: petalinux-build -c u-boot) and this can be ignored.

WARNING: SRC_URI is conditionally overridden in this recipe, thus several devtool-override-* branches have been created, one for each override that makes changes to SRC_URI. It is recommended that you make changes to the devtool branch first, then checkout and rebase each devtool-override-* branch and update any unique patches there (duplicates on those branches will be ignored by devtool finish/update-recipe).
Tip: Set U-Boot target in petalinux-config menuconfig as required, for your custom board. Set $ petalinux-config > U-Boot Configuration > u-boot config target as required. Possible values for Xilinx evaluation boards which are default set are as follows:
  • For Zynq-7000 devices, xilinx_zynq_virt_defconfig
  • For Zynq UltraScale+ MPSoC, xilinx_zynqmp_virt_defconfig
  • For MicroBlaze processors, microblaze-generic_defconfig
  • For Versal devices, xilinx_versal_virt_defconfig
Note: Please make sure board and user specific dtsi entries are added to project-spec/meta-user/recipes-bsp/device-tree/files/system-user.dtsi.
Using template flow, for zcu102 and zcu106 boards, add the following line to <plnx-proj-root>/project-spec/meta-user/recipes-bsp/embeddedsw/fsbl-firmware_%.bbappend for FSBL initializations.
YAML_COMPILER_FLAGS_append = " -DXPS_BOARD_ZCU102" #for zcu102
YAML_COMPILER_FLAGS_append = " -DXPS_BOARD_ZCU106" # for zcu106