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

//

//      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 Red Hat, Inc.

// Copyright (C) 2002 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):    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");

    }

}