mirror of https://github.com/acidanthera/audk.git
100 lines
1.4 KiB
C
100 lines
1.4 KiB
C
/** @file
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Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
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Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Base.h>
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#include <Library/ArmLib.h>
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#include "ArmLibPrivate.h"
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VOID
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EFIAPI
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ArmSetAuxCrBit (
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IN UINT32 Bits
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)
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{
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UINT32 val = ArmReadAuxCr();
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val |= Bits;
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ArmWriteAuxCr(val);
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}
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VOID
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EFIAPI
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ArmUnsetAuxCrBit (
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IN UINT32 Bits
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)
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{
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UINT32 val = ArmReadAuxCr();
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val &= ~Bits;
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ArmWriteAuxCr(val);
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}
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//
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// Helper functions for accessing CPUACTLR
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//
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VOID
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EFIAPI
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ArmSetCpuActlrBit (
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IN UINTN Bits
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)
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{
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UINTN Value;
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Value = ArmReadCpuActlr ();
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Value |= Bits;
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ArmWriteCpuActlr (Value);
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}
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VOID
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EFIAPI
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ArmUnsetCpuActlrBit (
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IN UINTN Bits
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)
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{
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UINTN Value;
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Value = ArmReadCpuActlr ();
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Value &= ~Bits;
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ArmWriteCpuActlr (Value);
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}
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UINTN
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EFIAPI
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ArmDataCacheLineLength (
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VOID
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)
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{
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return 4 << ((ArmCacheInfo () >> 16) & 0xf); // CTR_EL0.DminLine
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}
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UINTN
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EFIAPI
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ArmInstructionCacheLineLength (
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VOID
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)
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{
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return 4 << (ArmCacheInfo () & 0xf); // CTR_EL0.IminLine
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}
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UINTN
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EFIAPI
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ArmCacheWritebackGranule (
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VOID
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)
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{
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UINTN CWG;
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CWG = (ArmCacheInfo () >> 24) & 0xf; // CTR_EL0.CWG
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if (CWG == 0) {
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return SIZE_2KB;
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}
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return 4 << CWG;
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}
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