topic Re: LS1021A-TWR: Missing eth devices in Layerscape

LS1021A-TWR: Missing eth devices

z_v — Fri, 13 Jan 2017 11:10:34 GMT

Hello,

I compiled kernel 4.1.13 with ls1021a_defconfig.

The root file system is busybox 1.25.1.

For some reason, there are no eth devices. Only 'lo'

Can you explain why ?

With Yokto's kernel, it works fine.

I want to use a newer kernel from kernel.org

Thank you,

Z.V

Re: LS1021A-TWR: Missing eth devices

yipingwang — Mon, 16 Jan 2017 09:00:05 GMT

Hello Vered Zvi,

Have your tried whether Yocto Kernel worked fine with your built rootfs filesystem?

Would you please provide you Kernel 4.1.13 boot up console log?

Have a great day,
Yiping

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Re: LS1021A-TWR: Missing eth devices

yipingwang — Sun, 22 Jan 2017 05:09:05 GMT

Hello Vered Zvi,

As I answered you previously, please use the following procedure to build Linux Kernel image manually.

I assume that you have already installed the standalone Toolchain provided in SDK 2.0 ARMv7 Image ISO in the folder /opt/fsl-qoriq/2.0/.
1. Please execute the following commands to export CC and LD environment.
$source /opt/fsl-qoriq/2.0/environment-setup-cortexa7hf-vfp-neon-fsl-linux-gnueabi
2. Go to Kernel source folder, configure Linux Kernel
$ cp arch/arm/configs/ls1021a_defconfig .config
Configure Kernel according your requirement and save the configuration
$ make ARCH=arm menuconfig
3. Build uImage with the following command, and get uImage in the folder arch/arm/boot/.
$ make -j 4 uImage ARCH=arm LOADADDR=0x80008000
4. Build dtb file, and get the file ls1021a-twr.dtb in the folder arch/arm/boot/dts/.
$ make ARCH=arm ls1021a-twr.dtb

If your problem remains, please provide the whole UART console log.

Have a great day,
Yiping