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ARM Cortex A8 : Enabling D Cache aborts

Gopu

I am using Omap3515 (Arm Cortex A8). Enabled I-Cache, D-Cache, Branch Prediction and MMU.

I am getting a data abort, if I try to copy a frame buffer of 600KB from an external memory region to another external memory region. After the data abort, I could notice that the SDR i.e SDRAM is not accessible.

I have enabled MMU in such a way that PA=VA.

There is no issue if I copy less amount data.

And also, If I disable D-Cache then there is no abort and it works fine. But I would like to enable D-Cache for faster access.

Thanks and regards,

Gopu

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