i.MX6ULL ERR010449 states that :
When authenticating image, DCP write the result HASH value of the boot image into OCRAM,
but ROM does not invalidate D-Cache when reading back the HASH. Thus getting wrong value,
and finally wrongly ‘think’ the image is invalid.
There are two workarounds:
- Disable MMU/D-Cache using in BootROM by setting Boot_Config “BT_MMU_DISABLE”, or
- Specify engine as “HAB_ENG_SW” instead of “HAB_ENG_DCP” by SCT tool. This will force HAB use the software hash engine.
We use the CAAM (HAB_ENG_CAAM) engine, in other words, the "[Header]" section of our CSF file contains:
"Engine = CAAM"
Does the issue also occur for the CAAM engine or does it *only* occur with the DCP (HAB_ENG_DCP) engine ?
