[edk2-devel] [PATCH] ArmPkg/ArmPsciMpServices Add EFI_NOT_READY return

[Rebecca Cran]

Reviewed-by: Rebecca Cran <rebecca at bsdio.com>


Looks like this is still waiting to be merged by an ArmPkg maintainer.


-- 
Rebecca Cran


On 6/29/23 14:46, Jeff Brasen wrote:
> Add EFI_NOT_READY return if the CPU can not be enabled if the
> processor is already on.
>
> This can occur in normal use if the CPU is still being turned off from
> a previous call when this is called again.
>
> Signed-off-by: Jeff Brasen <jbrasen at nvidia.com>
> ---
>   ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c b/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> index f822a9877c..e7f4223513 100644
> --- a/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> +++ b/ArmPkg/Drivers/ArmPsciMpServicesDxe/ArmPsciMpServicesDxe.c
> @@ -103,7 +103,9 @@ DispatchCpu (
>   
>     ArmCallSmc (&Args);
>   
> -  if (Args.Arg0 != ARM_SMC_PSCI_RET_SUCCESS) {
> +  if (Args.Arg0 == ARM_SMC_PSCI_RET_ALREADY_ON) {
> +    Status = EFI_NOT_READY;
> +  } else if (Args.Arg0 != ARM_SMC_PSCI_RET_SUCCESS) {
>       DEBUG ((DEBUG_ERROR, "PSCI_CPU_ON call failed: %d\n", Args.Arg0));
>       Status = EFI_DEVICE_ERROR;
>     }


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