U-Boot prints a list of enabled Ethernet interfaces. Set up Ethernet connection between the board (for example, LX2160ARDB) and host machine on which you have configured the TFTP server.itb image from TFTP server to Layerscape board For example, lsdk2004_yocto_tiny_LS_b file. This generates lsdk2_yocto_tiny_LS_b file. Copy the Image and Image.gz files from the /flexbuild_/packages/linux/linux/arch/arm64/boot folder and to the /flexbuild_/build/linux/kernel/arm64/LS folder.itb file, which includes stress package and thermal monitoring unit installed, for kernel booting. Build kernel image and device tree image.Load the changed configuration for Layerscape Armv8 platform in 64-bit mode for LSDK. Copy the configuration file to arch/arm64/configs folder.įor example, $ cp nfig arch/arm64/configs/.Exit to come out of the Kernel Configuration prompt.For example, save the configuration file as nfig. After you include all options as mentioned in the above table, save the configuration with a file name.Similarly, include the following options to enable thermal management framework.symbol indicates the option is included (shown in below figure). Navigate to Device Drivers -> Generic Thermal sysfs driver -> Generic CPU cooling support option.Use the Arrow keys to navigate the menu and Enter to select the submenu. The command opens the kernel configuration prompt. Run make menuconfig command to configure settings to enable thermal monitoring unit.$ export CROSS_COMPILE=aarch64-linux-gnu. Run the following commands on Ubuntu Linux: For example, compiling an Armv8 kernel on an X86 computer. The following setting is applicable when you configure and build kernel on a different architecture from the target. Enable environmental setting for cross-compiling.

Change directory to flexbuild_/packages/linux/linux.Step 3 Enable system monitoring unit and build kernel This generates the following images: rootfs_lsdk_yocto_tiny_ (~22M), lsdk_yocto_tiny_LS_b, and firmware_uboot_sdboot.img.įor example: rootfs_lsdk2004_yocto_tiny_ (~22M), lsdk2004_yocto_tiny_LS_b, and firmware_lx2160ardb_rev2_uboot_sdboot.img Run the following commands to generate Yocto-based tiny userland: This step is needed in case source/config has changed. Add “stress” package to ' IMAGE_INSTALL_append' parameter of local_arm64_nf file available in flexbuild_/configs/yocto/ folder.Run the following commands to extract Flexbuild files from tar archived file.Enter login details, accept the agreement to download the Flexbuild source tarball in the name format flexbuild_.tgz.

On a Linux machine, download Layerscape Software Development Kit.Step 1: Download Flexbuild and add packages in Yocto tiny Validate stress package and measure CPU temperature before and after stress

Enable thermal monitoring unit and build kernel.

Download Flexbuild and add packages in Yocto tiny.

However, these steps are applicable to all Layerscape devices. Steps are explained with an example of LX2160A SoC. The below steps describe how to measure CPU temperature and how to stress individual cores of CPU.

Linux temperature monitor gui