Re: [PATCH 06/16] hw/arm/xlnx-zcu102: Don't enable PSCI conduit when booting guest in EL3

[Richard Henderson <richard.henderson@linaro.org>]

On 1/28/22 02:46, Peter Maydell wrote:
> Change the Xilinx ZynqMP-based board xlnx-zcu102 to use the new
> boot.c functionality to allow us to enable psci-conduit only if
> the guest is being booted in EL1 or EL2, so that if the user runs
> guest EL3 firmware code our PSCI emulation doesn't get in its
> way.
> 
> To do this we stop setting the psci-conduit property on the CPU
> objects in the SoC code, and instead set the psci_conduit field in
> the arm_boot_info struct to tell the common boot loader code that
> we'd like PSCI if the guest is starting at an EL that it makes
> sense with.
> 
> Note that this means that EL3 guest code will have no way
> to power on secondary cores, because we don't model any
> kind of power controller that does that on this SoC.
> 
> Signed-off-by: Peter Maydell<peter.maydell@linaro.org>
> ---
> Again, if anybody knows the real-hardware EL3 behaviour for
> CPUs that would be great.
> ---
>   hw/arm/xlnx-zcu102.c |  1 +
>   hw/arm/xlnx-zynqmp.c | 13 ++++++++-----
>   2 files changed, 9 insertions(+), 5 deletions(-)

Acked-by: Richard Henderson <richard.henderson@linaro.org>

r~