//==========================================================================
//
//      caches.c
//
//      RedBoot cache control functions
//
//==========================================================================
// ####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
// Date:         2002-08-06
// Purpose:      
// Description:  
//              
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================

#include <redboot.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/hal_intr.h>
#include <cyg/hal/hal_cache.h>

RedBoot_cmd("cache", 
            "Manage machine caches", 
            "[ON | OFF]",
            do_caches 
    );

void
do_caches(int argc, char *argv[])
{
    unsigned long oldints;
    int dcache_on=0, icache_on=0;

    if (argc == 2) {
        if (strcasecmp(argv[1], "on") == 0) {
            HAL_DISABLE_INTERRUPTS(oldints);
            HAL_ICACHE_ENABLE();
            HAL_DCACHE_ENABLE();
            HAL_RESTORE_INTERRUPTS(oldints);
        } else if (strcasecmp(argv[1], "off") == 0) {
            HAL_DISABLE_INTERRUPTS(oldints);
            HAL_DCACHE_SYNC();
            HAL_ICACHE_DISABLE();
            HAL_DCACHE_DISABLE();
            HAL_DCACHE_SYNC();
            HAL_ICACHE_INVALIDATE_ALL();
            HAL_DCACHE_INVALIDATE_ALL();
            HAL_RESTORE_INTERRUPTS(oldints);
        } else {
            diag_printf("Invalid cache mode: %s\n", argv[1]);
        }
    } else {
#ifdef HAL_DCACHE_IS_ENABLED
        HAL_DCACHE_IS_ENABLED(dcache_on);
#endif
#ifdef HAL_ICACHE_IS_ENABLED
        HAL_ICACHE_IS_ENABLED(icache_on);
#endif
        diag_printf("Data cache: %s, Instruction cache: %s\n", 
                    dcache_on?"On":"Off", icache_on?"On":"Off");
    }
}