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Author SHA1 Message Date
Jeff Brasen via groups.io 01e1bc2894 ArmPkg/ArmPsciMpServices: Add EFI_NOT_READY return 
Add EFI_NOT_READY return if the CPU can not be enabled because 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@nvidia.com>
Reviewed-by: Rebecca Cran <rebecca@bsdio.com>
 2023-10-18 09:00:09 +00:00
Rebecca Cran e7aac7fc13 ArmPkg: implement EFI_MP_SERVICES_PROTOCOL based on PSCI calls 
Add support for EFI_MP_SERVICES_PROTOCOL during the DXE phase under
AArch64.

PSCI_CPU_ON is called to power on the core, the supplied procedure is
executed and PSCI_CPU_OFF is called to power off the core.

Fixes contributed by Ard Biesheuvel.

Signed-off-by: Rebecca Cran <rebecca@quicinc.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Kun Qin <kun.qin@microsoft.com>
 2023-01-27 14:18:56 +00:00