SunxiSystemControl.h

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/*
 * Copyright (C) 2020 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 __LIBARCH_ARM_SUNXI_SUNXISYSTEMCONTROL_H
#define __LIBARCH_ARM_SUNXI_SUNXISYSTEMCONTROL_H
 
#include <FreeNOS/System.h>
#include <Types.h>
 
class SunxiSystemControl
{
  private:
 
    static const Address IOBase = 0x01C00000;
 
  private:
 
    enum Registers
    {
        EmacClock = 0x30,
    };
 
    enum EmacClockFlags
    {
        EmacClockDefault  = 0x58000,
        EmacClockMask     = 0xffff8000,
        EmacClockPhyShift = 20,
        EmacClockLedPoll  = (1 << 17),
        EmacClockShutdown = (1 << 16),
        EmacClockSelect   = (1 << 15),
        EmacClockRmiiEn   = (1 << 13),
    };
 
  public:
 
    enum Result
    {
        Success,
        IOError,
        InvalidArgument
    };
 
    Result initialize();
 
    Result setupEmac(const uint phyAddr);
 
  private:
 
    Arch::IO m_io;
};
 
#endif /* __LIBARCH_ARM_SUNXI_SUNXISYSTEMCONTROL_H */