#ifndef CYGONCE_HAL_PLATFORM_EXTRAS_H
#define CYGONCE_HAL_PLATFORM_EXTRAS_H

/*=============================================================================
//
//      hal_platform_extras.h
//
//      Platform specific support for HAL (assembly code)
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// 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.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 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 v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    gthomas
// Contributors: gthomas, msalter
// Date:         1999-12-02
// Purpose:      Cogent CMA222 platform extras, in particular MMU tables
// Description: 
// Usage:       #include <cyg/hal/hal_platform_extras.h>
//
//####DESCRIPTIONEND####
//
//===========================================================================*/

        .section ".mmu_tables","aw"

#define NEXT_PAGE                \
        .long   PTE                     ; \
        .set    PTE,PTE+MMU_PAGE_SIZE

_PT_0x0:
        .set    PTE,DRAM_PA_START|MMU_L2_TYPE_Small\
                    |MMU_AP_Any|MMU_Bufferable|MMU_Cacheable
        .rept   (0x2000000)/0x1000
        NEXT_PAGE
        .endr
        .balign 0x0400

// Too bad these macros don't work ['as' bug?] :-(

#define NEXT_SECTION                                            \
        .long   PTE+OFF                                        ;\
        .set    OFF,OFF+(MMU_SECTION_SIZE/MMU_PAGE_SIZE)*4

#define FILL_SEGMENT_(base)                     \
        .set    PTE,base                        \
        .set    OFF,0x00000000                  \
        .rept   0x10000000/MMU_SECTION_SIZE     \
            NEXT_SECTION                        \
        .endr

#define OFF     ((MMU_SECTION_SIZE/MMU_PAGE_SIZE)*4)

#define FILL_8M_SEGMENT(base,seg)               \
        .long   base+(OFF*(seg+0x00));          \
        .long   base+(OFF*(seg+0x01));          \
        .long   base+(OFF*(seg+0x02));          \
        .long   base+(OFF*(seg+0x03));          \
        .long   base+(OFF*(seg+0x04));          \
        .long   base+(OFF*(seg+0x05));          \
        .long   base+(OFF*(seg+0x06));          \
        .long   base+(OFF*(seg+0x07));          \
        .long   base+(OFF*(seg+0x08));

#define FILL_16M_SEGMENT(base,seg)              \
        .long   base+(OFF*(seg+0x00));          \
        .long   base+(OFF*(seg+0x01));          \
        .long   base+(OFF*(seg+0x02));          \
        .long   base+(OFF*(seg+0x03));          \
        .long   base+(OFF*(seg+0x04));          \
        .long   base+(OFF*(seg+0x05));          \
        .long   base+(OFF*(seg+0x06));          \
        .long   base+(OFF*(seg+0x07));          \
        .long   base+(OFF*(seg+0x08));          \
        .long   base+(OFF*(seg+0x09));          \
        .long   base+(OFF*(seg+0x0A));          \
        .long   base+(OFF*(seg+0x0B));          \
        .long   base+(OFF*(seg+0x0C));          \
        .long   base+(OFF*(seg+0x0D));          \
        .long   base+(OFF*(seg+0x0E));          \
        .long   base+(OFF*(seg+0x0F));

#define FILL_32M_SEGMENT(base,seg)              \
        FILL_16M_SEGMENT(base,0x00);            \
        FILL_16M_SEGMENT(base,0x10);

#define FILL_256M_SEGMENT(base)                 \
        FILL_16M_SEGMENT(base,0x00);            \
        FILL_16M_SEGMENT(base,0x10);            \
        FILL_16M_SEGMENT(base,0x20);            \
        FILL_16M_SEGMENT(base,0x30);            \
        FILL_16M_SEGMENT(base,0x40);            \
        FILL_16M_SEGMENT(base,0x50);            \
        FILL_16M_SEGMENT(base,0x60);            \
        FILL_16M_SEGMENT(base,0x70);            \
        FILL_16M_SEGMENT(base,0x80);            \
        FILL_16M_SEGMENT(base,0x90);            \
        FILL_16M_SEGMENT(base,0xA0);            \
        FILL_16M_SEGMENT(base,0xB0);            \
        FILL_16M_SEGMENT(base,0xC0);            \
        FILL_16M_SEGMENT(base,0xD0);            \
        FILL_16M_SEGMENT(base,0xE0);            \
        FILL_16M_SEGMENT(base,0xF0);

        .balign 0x4000
_MMU_table:     
        FILL_32M_SEGMENT(_PT_0x0+MMU_L1_TYPE_Page,0x00)
        FILL_32M_SEGMENT(MMU_L1_TYPE_Fault,0x00)
        FILL_32M_SEGMENT(PCIMEM_PA|MMU_L1_TYPE_Section|MMU_AP_Any)
        FILL_32M_SEGMENT(MMU_L1_TYPE_Fault,0x00)
        FILL_32M_SEGMENT(MMU_L1_TYPE_Fault,0x00)
        FILL_32M_SEGMENT(MMU_L1_TYPE_Fault,0x00)
        FILL_32M_SEGMENT(MMU_L1_TYPE_Fault,0x00)
        FILL_8M_SEGMENT(ROM_PA|MMU_L1_TYPE_Section|MMU_AP_Any)
        FILL_16M_SEGMENT(MBIO_PA|MMU_L1_TYPE_Section|MMU_AP_Any)
        FILL_8M_SEGMENT(FLASH_PA|MMU_L1_TYPE_Section|MMU_AP_Any)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)
        FILL_256M_SEGMENT(MMU_L1_TYPE_Fault)

#endif // CYGONCE_HAL_PLATFORM_EXTRAS_H
