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/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
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 *
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 * this software without specific prior written permission.
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 */
 
//------------------------------------------------------------------------------
/// \unit
///
/// !Purpose
/// 
/// Methods to manage the Coprocessor 15. Coprocessor 15, or System Control 
/// Coprocessor CP15, is used to configure and control all the items in the 
/// list below:
/// • ARM core
/// • Caches (ICache, DCache and write buffer)
/// • TCM
/// • MMU
/// • Other system options
/// 
/// !Usage
///
/// -# Enable or disable D cache with Enable_D_Cache and Disable_D_Cache
/// -# Enable or disable I cache with Enable_I_Cache and Disable_I_Cache
///
//------------------------------------------------------------------------------
 
#ifndef _CP15_H
#define _CP15_H
 
#ifdef CP15_PRESENT
 
//-----------------------------------------------------------------------------
//         Exported functions
//-----------------------------------------------------------------------------
extern void CP15_Enable_I_Cache(void);
extern unsigned int CP15_Is_I_CacheEnabled(void);
extern void CP15_Enable_I_Cache(void);
extern void CP15_Disable_I_Cache(void);
extern unsigned int CP15_Is_MMUEnabled(void);
extern void CP15_EnableMMU(void);
extern void CP15_DisableMMU(void);
extern unsigned int CP15_Is_DCacheEnabled(void);
extern void CP15_Enable_D_Cache(void);
extern void CP15_Disable_D_Cache(void);
 
//-----------------------------------------------------------------------------
//         External functions defined in cp15.S
//-----------------------------------------------------------------------------
extern unsigned int _readControlRegister(void);
extern void _writeControlRegister(unsigned int value);
extern void _waitForInterrupt(void);
extern void _writeTTB(unsigned int value);
extern void _writeDomain(unsigned int value);
extern void _writeITLBLockdown(unsigned int value);
extern void _prefetchICacheLine(unsigned int value);
 
#endif // CP15_PRESENT
 
#endif // #ifndef _CP15_H