AArch64Lib.c

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#include <Base.h>
 
#include <Library/ArmLib.h>
#include <Library/DebugLib.h>
 
#include <AArch64/AArch64.h>
 
#include "AArch64Lib.h"
#include "ArmLibPrivate.h"
 
BOOLEAN
EFIAPI
ArmHasGicSystemRegisters (
  VOID
  )
{
  return ((ArmReadIdAA64Pfr0 () & AARCH64_PFR0_GIC) != 0);
}
 
BOOLEAN
EFIAPI
ArmHasGicV5SystemRegisters (
  VOID
  )
{
  return ((ArmReadIdAA64Pfr2 () & AARCH64_PFR2_GCIE) != 0);
}
 
BOOLEAN
EFIAPI
ArmHasCcidx (
  VOID
  )
{
  UINTN  Mmfr2;
 
  Mmfr2 = ArmReadIdAA64Mmfr2 ();
  return (((Mmfr2 >> 20) & 0xF) == 1) ? TRUE : FALSE;
}
 
BOOLEAN
EFIAPI
ArmHasVhe (
  VOID
  )
{
  return ((ArmReadIdAA64Mmfr1 () & AARCH64_MMFR1_VH) != 0);
}
 
BOOLEAN
EFIAPI
ArmHasTrbe (
  VOID
  )
{
  return ((ArmReadIdAA64Dfr0 () & AARCH64_DFR0_TRBE) != 0);
}
 
BOOLEAN
EFIAPI
ArmHasEte (
  VOID
  )
{
  // The ID_AA64DFR0_EL1.TraceVer field identifies the presence of FEAT_ETE.
  return ((ArmReadIdAA64Dfr0 () & AARCH64_DFR0_TRACEVER) != 0);
}
 
BOOLEAN
EFIAPI
ArmHas52BitTgran4 (
  VOID
  )
{
  UINT64  Mmfr0;
 
  Mmfr0 = ArmReadIdAA64Mmfr0 ();
 
  return ((Mmfr0 & AARCH64_MMFR0_TGRAN4_MASK) == AARCH64_MMFR0_TGRAN4_52BITS);
}