ARMControl.h

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/*
 * Copyright (C) 2015 Niek Linnenbank
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef __ARM_CONTROL_H
#define __ARM_CONTROL_H
 
#include <Types.h>
#include <Macros.h>
 
class ARMControl
{
  public:
 
    enum Register
    {
        MainID = 0,
        CoreID,
        SystemControl,
        AuxControl,
        DomainControl,
        TranslationTable0,
        TranslationTable1,
        TranslationTableCtrl,
        CacheClear,
        DataCacheClean,
        FlushPrefetchBuffer,
        InstructionCacheClear,
        InstructionTLBClear,
        DataTLBClear,
        UnifiedTLBClear,
        UserProcID,
        InstructionFaultAddress,
        InstructionFaultStatus,
        DataFaultAddress,
        DataFaultStatus,
        SystemFrequency
    };
 
    enum SystemControlFlags
    {
        MMUEnabled        = (1 << 0),
        InstructionCache  = (1 << 12),
        DataCache         = (1 << 2),
        ExtendedPaging    = (1 << 23),
        AccessPermissions = (1 << 29),
        BranchPrediction  = (1 << 11),
        AlignmentCorrect  = (1 << 22),
        AlignmentFaults   = (1 << 1),
#ifdef ARMV6
        BigEndian         = (1 << 7)
#else
        BigEndian         = (1 << 25)
#endif
    };
 
    enum AuxControlFlags
    {
        DisablePageColoring = (1 << 6),
        SMPBit              = (1 << 6)
    };
 
    enum DomainControlFlags
    {
        DomainClient  = 1,
        DomainManager = 3
    };
 
    ARMControl();
 
    virtual ~ARMControl();
 
    u32 read(Register reg) const;
 
    void write(Register reg, u32 value);
 
    void set(SystemControlFlags flags);
 
    void unset(SystemControlFlags flags);
 
    void set(AuxControlFlags flags);
 
    void set(DomainControlFlags flags);
 
  private:
 
    void set(Register reg, u32 flags);
 
    void unset(Register reg, u32 flags);
};
 
#endif /* __ARM_CONTROL_H */