On Thu, 2012-09-06 at 11:50 +0800, Guodong Xu wrote: > <guodong> I think there are two ways to access CCI from non-secure mode: > 1. In Hyp mode, issue an SMC instruction to enter Secure Monitor mode and > do the job. > 2. In secure mode (early stage in boot.S, or in monitor.S), change 'Secure Access Register' of CCI-400 > to enable non-secure access. But this compromises system's security. I tested this and it can work: I notice that the Linux cpu_idle code we have for TC2 contains functions which manipulates the CCI, so I think it would be good if we enabled non-secure access to it, otherwise I think we will have problems somewhere down the line. -- Tixy _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
