devmem2 <physical_address> # if devmem is available or check kernel logs for:
dmesg | grep -i "machine\|tag\|ktag" Fix Bootloader Configuration (U-Boot example) Switch from ATAGs to Device Tree or update the machine ID: ktag hardware configuration not supported
Would you like a sample kernel patch to add a new hardware revision to a board’s tag validation logic, or guidance on extracting the ktag value from memory? devmem2 <physical_address> # if devmem is available or