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

[DohwanAhn]

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?

[Oswalag]

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. 

[DohwanAhn]

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

[Oswalag]

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.