CapsuleReset.c

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#include "CapsuleService.h"
 
BOOLEAN
IsPersistAcrossResetCapsuleSupported (
  VOID
  )
{
  //
  // ARM requires the capsule payload to be cleaned to the point of coherency
  // (PoC), but only permits doing so using cache maintenance instructions that
  // operate on virtual addresses. Since at runtime, we don't know the virtual
  // addresses of the data structures that make up the scatter/gather list, we
  // cannot perform the maintenance, and all we can do is give up.
  //
  return FeaturePcdGet (PcdSupportUpdateCapsuleReset) && !EfiAtRuntime ();
}