Re: System Tick in QEMU

[Edgar E. Iglesias]

On Thu, Aug 19, 2021 at 10:07:24AM +0100, Peter Maydell wrote:
> On Thu, 19 Aug 2021 at 06:54, asif siddiqui <asifsiddiqui120@gmail.com> wrote:
> >
> > Hello All,
> >
> > We are using xlnx-zcu102 machine and following command to boot the QNX OS 
> > as guest on top of QEMU with WIndows as HOST OS.
> >
> > QEMU Command to boot QNX Image-
> > qemu-system-aarch64 -M xlnx-zcu102 -m 8G -serial mon:stdio -display none 
> > -device loader,file=E:\QNX-IFS.bin,cpu-num=0
> >
> > We are working on the gptp timing. To implement the gptp time we need to 
> > enable the system tick (Xilinx-zcu102 + QNX + QEMU).
> >
> > For getting the Timer Counter's value we are trying to read Counter_Value_1 
> > (TTC) Register as mentioned in the given link
> > https://www.xilinx.com/html_docs/registers/ug1087/ug1087-zynq-ultrascale-registers.html#ttc___counter_value_1.html
> >
> > Query -
> > How to enable the system tick in QEMU enviroment(Xilinx-zcu102 + QNX + 
> > QEMU). Do we need to configure any command line option in the QEMU command.
> 
> I have cc'd the maintainers of the xlnx-zcu102 machine model,
> who will probably know.
>

Hi,

The TTC is unfortunately missing from the ZCU102 model.

Best regards,
Edgar