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TMS320C6678: my program can boot by spi,but,the main core stopped at res_mgr_init_pass() in the process of ethernet iinitialization

Part Number: TMS320C6678

hello~I need your help. my program that has 8 cores  can work through SPI boot. but the main core,core number 0 stopped at PA_resetcontrol. other core work well.the main core's program has ethernet iinitialization which copy C:\ti\mcsdk_2_01_02_05\examples\ndk\helloWorld。it stopped at PA_resetcontrol of res_mgr_init_pass() process. would you tell me what's wrong. by the way, the program can work on 8 cores without  ethernet iinitialization.

iu