We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
GIC-500 how connects to CPU cores?
在GIC-500 中CPU Interface 是GIC的一部分还是cluster 的一部分？
Hi,
the GIC-500 is compatible with Cores compliant to the ARMv8 Architecture Specification. These cores have integrated what is called a "CPU Interface" that is used to communicate with the GIC controller.
HTH,
Carmelo
Thank you very much!
BUt , I am also feel uncertain about "CPU Interface"， whear the“CPU Interface” is a part of the CPU or a part of the GIC ?
The CPU Interface is part of the processor itself. Practically speaking, it has to be as the CPU Interface registers are now accessed as system registers rather than memory mapped registers.
The CPU Interface(s) in the processor connects to GIC-500 using AXI Stream interface. The protocol used over this connection is described in the GICv3/GICv4 specification.