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Linux/AM4379: SPL debug issue with CCS

Part Number: AM4379

Tool/software: Linux

   My linux host version is: ubuntu16.0.4

   CCS version is :7.3 

   u-boot version is: u-boot-2017.01+gitAUTOINC+590c7d7fe1-g590c7d7fe1

   I debugged u-boot based on this guide  “processors.wiki.ti.com/.../Sitara_Linux_Training:_uboot_linux_debug_with_ccsv5_sdk7     

   It is normal at the initial stage until the jump to _main

   

The execution of this phase is very successful at this stage until the execution of “memset”

After I execute the step over ,program  jump to the hang up interrupt

     

If I use "step into" into the "memset", i find the parameter “count” of memset is 310856.  So I have to take a continuous execution“step over” 

Please give me some advice. Thank you.