K2GICE: Booting from sd card

Nancy,

It looks like the Boot ROM on the device is able to load the secondary bootloader(SBL) but for some reason the SBL copies the application and passes control but the application is not starting. In this case, what helps most is by connecting a JTAG to the ARM core (without GEL file) and loading the symbols from the ARM .out. check to see the program counter and indicate if this is in MSMC or DDR memory and use the map file for application and sBL to see which function the core is hung in.

There are some useful debug tips for debugging SBL based application boot in the article here:

http://software-dl.ti.com/processor-sdk-rtos/esd/docs/latest/rtos/index_Foundational_Components.html#software-debug-steps

SBL is like any other user defined code that can be debugged by setting break points. SBL is provided in full source so we would need the customer to provide some insight into whether the code is hung in SBL or when starting the application. Also ensure the application code/data sections don`t overlap over SBL memory sections.

Hope this helps.

Regards,

Rahul 

Nancy, 

This definitely indicates that the SBL has passed control to the SYSBIOS application on the ARM and an exception occurred in the application. Do we know if the exception occured before entering main or after entering main in the SYSBIOS application.

what application are they trying to boot? Is this their custom application or one of the SDK examples. I would recommend testing with SDK examples first and then testing custom application. also, please ask the customer to provide Processor SDK release version used so I can check if there are any known issues.

Regards,

Rahul 

Thanks for that info. Let me check internally with system test if there is any known issue as the boot should not fail with SDK example.

Can you please confirm that the SBL image for SD boot that was used was from the following folder and not the prebuilt one that is part of the SD card image.

pdk_k2g_1_0_xx\packages\ti\boot\sbl\binary\iceK2G\mmcsd\bin

Was there any modifications made to the SBL source ?

Regards.

Rahul