在KeystoneII构架的多核异构SoC应用中,系统异常处理必不可少,处理异常问题的能力也是衡量系统稳定性的一个重要标准。本文以高性能SoC TMS320C66AK2H的C66x内核为基础,利用C66x内核中断控制器和芯片的中断处理控制器实现一个系统异常处理的方法,能够准确、快速地定位系统运行出错的地方。最后,以DSP核0使用EDMA3模块非法访问共享内存MSMC为例,验证系统异常处理方法的可行性。经测试,该异常处理方法准确有效。

System exception handling is essential in the multi-core heterogeneous SoC application of KeystoneII architecture,and the ability to handle exception problems is also an important standard to measure system stability.Based on the C66x core of the high-performance SoC TMS320C66AK2H,this paper uses the C66x core interrupt controller and the chip interrupt processing controller to implement a system exception handling method,which can accurately and quickly locate the place where the system runs incorrectly.Finally,the DSP core 0 uses the EDMA3 module to illegally access the shared memory MSMC as an example to verify the feasibility of the system exception handling method.The test results show that the exception handling method is accurate and effective.