Re: [Qemu-arm] [Qemu-devel] [PATCH 7/8] hw/arm/iotkit-sysctl: Implement CPUWAIT and INITSVTOR*

[Richard Henderson]

On 2/19/19 4:58 AM, Peter Maydell wrote:
> The CPUWAIT register acts as a sort of power-control: if a bit
> in it is 1 then the CPU will have been forced into waiting
> when the system was reset (which in QEMU we model as the
> CPU starting powered off). Writing a 0 to the register will
> allow the CPU to boot (for QEMU, we model this as powering
> it on). Note that writing 0 to the register does not power
> off a CPU.
> 
> For this to work correctly we need to also honour the
> INITSVTOR* registers, which let the guest control where the
> CPU will load its SP and PC from when it comes out of reset.
> 
> Signed-off-by: Peter Maydell <address@hidden>
> ---
>  hw/misc/iotkit-sysctl.c | 41 +++++++++++++++++++++++++++++++++++++----
>  1 file changed, 37 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <address@hidden>


r~