Re: [Minios-devel] [UNIKRAFT PATCHv5 40/46] plat/common: Implement CPU reset for arm64

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

On 10.08.2018 09:08, Wei Chen wrote:
> From: Wei Chen <Wei.Chen@xxxxxxx>
>
> Using PSCI despatch function to call PSCI_CPU_RESET
> function to reset CPU.
>
> Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
> ---
>   plat/common/arm/cpu_native.c        | 7 +++++++
>   plat/common/include/arm/arm64/cpu.h | 1 +
>   2 files changed, 8 insertions(+)
>
> diff --git a/plat/common/arm/cpu_native.c b/plat/common/arm/cpu_native.c
> index 2d1a1aa..429b172 100644
> --- a/plat/common/arm/cpu_native.c
> +++ b/plat/common/arm/cpu_native.c
> @@ -43,3 +43,10 @@ void halt(void)
>   {
>         __asm__ __volatile__("wfi");
>   }
> +
> +/* Systems support PSCI >= 0.2 can do system reset from PSCI */
> +void reset(void)
> +{
> +       UK_BUGON (!smcc_psci_call);
Maybe we should have failed earlier during boot when we failed to detect 
the mode. Then you could use UK_ASSERT() instead. What do you think?
> +       smcc_psci_call(PSCI_FNID_SYSTEM_RESET, 0, 0, 0);
> +}
> diff --git a/plat/common/include/arm/arm64/cpu.h 
> b/plat/common/include/arm/arm64/cpu.h
> index b231d32..c156fd3 100644
> --- a/plat/common/include/arm/arm64/cpu.h
> +++ b/plat/common/include/arm/arm64/cpu.h
> @@ -102,3 +102,4 @@ int32_t smcc_psci_smc_call(uint32_t, uint64_t, uint64_t, 
> uint64_t);
>   
>   /* CPU native APIs */
>   void halt(void);
> +void reset(void);
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