BroadcomTimer.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 __LIBARCH_ARM_BROADCOMTIMER_H
#define __LIBARCH_ARM_BROADCOMTIMER_H
 
#include <Types.h>
#include <Macros.h>
#include <Timer.h>
#include <arm/ARMIO.h>
 
#define SYSTIMER_BASE 0x3000
 
#define SYSTIMER_CS   (SYSTIMER_BASE + 0x0)
#define SYSTIMER_CLO  (SYSTIMER_BASE + 0x4)
 
#define SYSTIMER_C0   (SYSTIMER_BASE + 0xC)
#define SYSTIMER_C1   (SYSTIMER_BASE + 0x10)
 
#define SYSTIMER_C2   (SYSTIMER_BASE + 0x14)
#define SYSTIMER_C3   (SYSTIMER_BASE + 0x18)
    #define M3 3
    #define M2 2
    #define M1 1
    #define M0 0
 
#define BCM_SYSTIMER_FREQ 1000000
 
class BroadcomTimer : public Timer
{
  public:
 
    virtual Result setFrequency(Size hertz);
 
    virtual Result tick();
 
  private:
 
    u32 m_cycles;
 
    ARMIO m_io;
};
 
#endif /* __LIBARCH_ARM_BROADCOMTIMER_H */