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CoreSight / ETM / CTI等等,它们之间的关系?

hi, experts:

在看ARMv7/v8 ARM手册的时候,总是不太明白CoreSight / ETM / CTI等等,它们之间的关系。

以Cortex-A57 MPCore TRM的Figure 2-1为例:

它展示了CA57's block diagram

1. 如果仅仅使用JTAG tool,通过HW/SW breakpoint进行debug

    只需要:Debug-->APB --> Debug and CTI --> Debug path

    ATB --> Trace --> ETM这条路径,是不需要的??

2. CoreSight是一个generic concept?

    它包含了所有debug 相关的IP? (比如:ETM / CTI)

best wishes,