Layerscape LS1012A

saleshin — Thu, 26 Mar 2026 14:55:02 GMT

I'm working with development board FRWY-LS1012A with board getting started guide.
I've prepared boot SD card and development board have been started with it.
Ethernet ports doesn't works, but it works only in u-boot mode. What should i do with it.
Bootlog and u-boot logs are in attachment.

Re: Layerscape LS1012A

Bio_TICFSL — Thu, 26 Mar 2026 22:39:13 GMT

Hello,

For the

FRWY-LS1012A development board, the most common reason Ethernet works in U-Boot but not in Linux is a failure to load the Packet Forwarding Engine (PFE) firmware or a conflict with the PFE state between the bootloader and the kernel.

Immediate Solutions to Try

Stop PFE in U-Boot: Before booting Linux, you must ensure the PFE is stopped in the bootloader so the Linux driver can take control cleanly.
- In the U-Boot prompt, run: => pfe stop
- Then proceed with your boot command (e.g., run bootcmd).
Verify PFE Firmware Files: The Linux driver requires specific firmware files in your root filesystem to initialize the Ethernet ports.
- Ensure the following file exists: /lib/firmware/ppfe_class_ls1012a.elf.
- If missing, you may need to copy them from your SDK or download the NXP PFE firmware package.
Check Device Tree (FDT): Ensure your boot sequence is loading the correct Device Tree Blob (DTB) for the FRWY board specifically, as using a generic LS1012A-RDB or FRDM tree can cause interface mismatches.
- Confirm your U-Boot fdt_addr points to fsl-ls1012a-frwy.dtb (or similar) during the booti or bootm command.

Regards

LayerscapeのトピックLayerscape LS1012A

Layerscape LS1012A

Re: Layerscape LS1012A