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Re: [Xen-devel] [ARM:PATCH v1 1/1] Add Odroid-XU (Exynos5410) support
On Tue, Jul 29, 2014 at 12:30 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Mon, 2014-07-28 at 15:25 -0700, Suriyan Ramasami wrote:
>> So, why is any other CPU other than CPU0 not able to read the CNTFRQ
>> register? Is my CPU turn on code causing this issue, or is something
>> extra needed to be done to the other CPUs in the bring up code?
>
> Are you sure you are writing CNTFRQ on every pCPU? This is a processor
> local register so it needs setting everywhere, not just once.
>
Ah! I didn't know that. I was setting it only once on the booting CPU
in u-boot through am smc call.
> You symptoms are sounding very much like it is only set on the boot CPU.
>
Thanks for pointing this out. I am wondering if I should go the psci
route for the Exynos 5410 or add an smc call in the cpu bring up code.
> Ian.
>
>
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