topic Re: [LX2160A] How can Secure Boot be properly implemented?” in Layerscape

[LX2160A] How can Secure Boot be properly implemented?”

DohwanAhn — Fri, 02 Jan 2026 02:39:56 GMT

We are using the LX2160ARDB and LSDK 20.04.
We are currently testing Secure Boot. When we flash the firmware_lx2160ardb_rev2_uboot_xspiboot_secure.img image generated using the command flex-builder -i auto -a arm64 -m lx2160ardb_rev2 and attempt to boot, no serial messages are displayed. What could be the cause of this issue?
Could you explain the correct procedure and debug method for applying Secure Boot?

Re: [LX2160A] How can Secure Boot be properly implemented?”

Oswalag — Fri, 09 Jan 2026 06:02:19 GMT

Hello,

Did you build using the "-s" at the end of your flex-builder command? it is for secure boot images, please refer to the LSDK users guide.

Re: [LX2160A] How can Secure Boot be properly implemented?”

DohwanAhn — Fri, 09 Jan 2026 08:26:24 GMT

It seems that flex-builder automatically generates secure images when the option is "auto".(SECURE=y)

Re: [LX2160A] How can Secure Boot be properly implemented?”

Oswalag — Thu, 15 Jan 2026 16:26:18 GMT

It is correct, please refer to section 5.1.1.2 Secure boot process in the LLDPUG, to check the flow and you can debug to define in which stage it fails, please also read chapter 5.1.1.3.1.3 ISBC validation error codes it shows some hunts of the issue in the boot process.