forked from Mirrors/opensbi

A platform may have a specific method to bring-up secondary harts for the first time but may rely on generic WFI based approach for hart hotplug in absence of a platform specific hart hotplug method. Define a platform feature flag for such platforms. The platform needs to implement platform specific bring-up method in hart_start and not define hart_stop method in this case. They must only define SBI_PLATFORM_HAS_HART_SECONDARY_BOOT. SBI_PLATFORM_HAS_HART_HOTPLUG should only be defined when the platform intend to support both hart_start and hart_stop and do not intend to rely on generic WFI based approach. Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Anup Patel <anup.patel@wdc.com>