ArmLib.c

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#include <Base.h>
 
#include <Library/ArmLib.h>
 
#include "ArmLibPrivate.h"
 
VOID
EFIAPI
ArmSetAuxCrBit (
  IN  UINT32  Bits
  )
{
  ArmWriteAuxCr (ArmReadAuxCr () | Bits);
}
 
VOID
EFIAPI
ArmUnsetAuxCrBit (
  IN  UINT32  Bits
  )
{
  ArmWriteAuxCr (ArmReadAuxCr () & ~Bits);
}
 
//
// Helper functions for accessing CPUACTLR
//
 
VOID
EFIAPI
ArmSetCpuActlrBit (
  IN  UINTN  Bits
  )
{
  ArmWriteCpuActlr (ArmReadCpuActlr () | Bits);
}
 
VOID
EFIAPI
ArmUnsetCpuActlrBit (
  IN  UINTN  Bits
  )
{
  ArmWriteCpuActlr (ArmReadCpuActlr () & ~Bits);
}
 
UINTN
EFIAPI
ArmDataCacheLineLength (
  VOID
  )
{
  return 4 << ((ArmCacheInfo () >> 16) & 0xf); // CTR_EL0.DminLine
}
 
UINTN
EFIAPI
ArmInstructionCacheLineLength (
  VOID
  )
{
  return 4 << (ArmCacheInfo () & 0xf); // CTR_EL0.IminLine
}
 
UINTN
EFIAPI
ArmCacheWritebackGranule (
  VOID
  )
{
  UINTN  CWG;
 
  CWG = (ArmCacheInfo () >> 24) & 0xf; // CTR_EL0.CWG
 
  if (CWG == 0) {
    return SIZE_2KB;
  }
 
  return 4 << CWG;
}