On Tue, Apr 21, 2015 at 1:51 PM, Zhi Li <lznuaa@xxxxxxxxx> wrote:
> On Tue, Apr 21, 2015 at 12:31 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
>>> +static void __init imx_ca7_smp_init_cpus(void)
>>> +{
>>> + int i, ncores;
>>> + unsigned long val;
>>> +
>>> + asm volatile("mrc p15, 1, %0, c9, c0, 2" : "=r" (val));
>>> + ncores = ((val >> 24) & 0x3) + 1;
>>> + if (setup_max_cpus < ncores)
>>> + ncores = (setup_max_cpus) ? setup_max_cpus : 1;
>>> +
>>> + for (i = ncores; i < NR_CPUS; i++)
>>> + set_cpu_possible(i, false);
>>> +}
>>
>> NAK.
>>
>> The set of available CPUs should come from the DT, as with other
>> platforms.
>
> Can you give me a reference platform implement?
All of the ones with no smp_operations.
Rob
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