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#ifndef CYGONCE_HAL_MEM_H

#define CYGONCE_HAL_MEM_H

//=============================================================================

//

//      hal_mem.h

//

//      HAL memory control API

//

//=============================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

// -------------------------------------------

// This file is part of eCos, the Embedded Configurable Operating System.

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.

// Copyright (C) 2003 Gary Thomas

//

// eCos 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 2 or (at your option) any later version.

//

// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

//

// As a special exception, if other files instantiate templates or use macros

// or inline functions from this file, or you compile this file and link it

// with other works to produce a work based on this file, this file does not

// by itself cause the resulting work to be covered by the GNU General Public

// License. However the source code for this file must still be made available

// in accordance with section (3) of the GNU General Public License.

//

// This exception does not invalidate any other reasons why a work based on

// this file might be covered by the GNU General Public License.

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

// -------------------------------------------

//####ECOSGPLCOPYRIGHTEND####

//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):   nickg

// Contributors:nickg, jskov, hmt

// Date:        2000-02-11

// Purpose:     Memory control API

// Description: The macros defined here provide the HAL APIs for handling

//              simple memory management operations.

// Usage:

//              #include <cyg/hal/hal_mem.h>

//              ...

//              

//

//####DESCRIPTIONEND####

//

//=============================================================================

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>

//=============================================================================

// Memory mapping

typedef struct {

    CYG_ADDRESS  virtual_addr;

    CYG_ADDRESS  physical_addr;

    cyg_int32    size;

    cyg_uint8    flags;

} cyg_memdesc_t;

// each variant HAL must provide these functions for mapping/clearing

// (simple BAT/TLB) memory mappings.

externC int

cyg_hal_map_memory (int id,CYG_ADDRESS virt, CYG_ADDRESS phys,

                    cyg_int32 size, cyg_uint8 flags);

externC void

cyg_hal_clear_MMU (void);

// each platform HAL must provide one of these to describe how memory

// should be mapped/cached, ideally weak aliased so that apps can override:

externC cyg_memdesc_t cyg_hal_mem_map[];

#define CYGARC_MEMDESC_CI       1       // cache inhibit

#define CYGARC_MEMDESC_GUARDED  2       // guarded

// these macros should ease that task, and ease any future extension of the

// structure (physical == virtual addresses):

#define CYGARC_MEMDESC_CACHE( _va_, _sz_ ) \

        { (_va_), (_va_), (_sz_), 0 }

#define CYGARC_MEMDESC_NOCACHE( _va_, _sz_ ) \

        { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_CI }

#define CYGARC_MEMDESC_NOCACHE_PA( _va_, _pa_, _sz_ ) \

        { (_va_), (_pa_), (_sz_), CYGARC_MEMDESC_CI }

#define CYGARC_MEMDESC_CACHEGUARD( _va_, _sz_ ) \

        { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_GUARDED }

#define CYGARC_MEMDESC_NOCACHEGUARD( _va_, _sz_ ) \

        { (_va_), (_va_), (_sz_), CYGARC_MEMDESC_GUARDED|CYGARC_MEMDESC_CI }

#define CYGARC_MEMDESC_TABLE_END      {0, 0, 0, 0}

#define CYGARC_MEMDESC_TABLE          cyg_memdesc_t cyg_hal_mem_map[]

#define CYGARC_MEMDESC_EMPTY_TABLE    { CYGARC_MEMDESC_TABLE_END }

//-----------------------------------------------------------------------------

#endif // ifndef CYGONCE_HAL_MEM_H

// End of hal_mem.h