Multi-core support for iMX6DQ (DualCore / QuadCore Cortex-A9)
J-Link script files are necessary to connect to the different A9 cores of the device. As a first step, it is mandatory to connect to the first A9 core (Core 0) and enable any other A9 core (Core 1-3) which the user would like to debug. It is the responsibility of the user to execute this first step.
A9 Core 0: Can be debugged without a script file, just select "Cortex-A9" as device.
The following commander file can be used to activate Cores 1-3. The file serves as an example and may be altered for specific use cases.
A9 Core 0: File:NXP iMX6DQ Activate4Cores.jlink
A9 Core 1: File:NXP iMX6DQ Core1.JLinkScript
A9 Core 2: File:NXP iMX6DQ Core2.JLinkScript
A9 Core 3: File:NXP iMX6DQ Core3.JLinkScript
How to use script files: Please refer to J-Link User Guide (UM08001), chapter 5.10 "J-Link script files"
Startup procedure is:
1) Start debug session that connects to Core 0 and activate the other cores.
This can be done by passing the following parameters to J-Link Commander:
-commanderscript PATHTOFILE/iMX6DQ_Activate4Cores.jlink -jtagconf -1,-1 2) Start debug session that connects to Core 1, 2 or 3 by using the respective provided script file 3) Start debug session that connects to Core 1, 2 or 3 by using the respective provided script file if required [...] x) Close all debug session(s) that connect to Core 1, 2 or 3. x + 1) Close debug session that connects to Core 0