IWRL6432AOP: L3 RAM , From SBL to APP, always 0

Part Number: IWRL6432AOP

Tool/software:

Dear TI,

We have another strange issue  with using SDK 05.04.00.01's demo "motion_and_presence_detectio". We merge the SHARE MEMORY to L3, and got 512KB RAM. But when have a SBL, and switch from SBL to APP, we use the RAM, the first 256KB(L3 RAM) can't be written, no matter what we write, the value is always zero. The share memory part seems right.

If we don't use SBL, everything seems right.

We use this SBL:

MMWAVE_L_SDK_05_04_00_01\examples\drivers\boot

Please help review if we have any mistake.

Thanks very much.