Hi
I am facing below error, while trying to bring-up custom board with Dstream ds-5 tool(5.27)
Error message shown below while trying to load the code and connect the core
Unable to connect to device Cortex-A9, Debug is not enable for this core
Kindly find the attachment
Hi,
Many thanks for the screenshot, it helps a lot.
This error basically means that the DSTREAM unit tried to enable halting-debug mode on the Cortex-A9, but failed to do so because the Debug Status Control Register (DSCR) Halting Debug Enable (HDBGen) stayed low.
As you mention this is a custom board, can you just check that the DBGEN signal on the Cortex-A9 is tied to b1 to enable non-secure debug.
If your device is a multi-core Cortex-A9 then remember that this signal is per processor core, so if you have a 4xCortex-A9 MPCore then there will be 4 instances of this signal, one of for each core.
For more information on these signals, take a look at section A.13.1 'Authentication signals' of the Cortex-A9 Technical Reference Manual r4p1.
I hope this helps ?
Regards,
Stuart