cache.h

针对德州仪器DM270开发板的bootloader,其实现了内核的下载以及文件系统的下载

/*
 * File: cache.h
 *
 * This is an interface to processor specific cache control.
 * This is an abstraction of generic cache functionality presented 
 * by this interface is independent of the actual device utilized. 
 * The module which is implemented to expose this generic interface 
 * will handle the specifics of the physical processor being utilized.
 *
 * Copyright (C) 2003 Cadenux, LLC
 * Author: Cadenux, LLC  <[e-mail]>
 *
 *  This program 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 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS  PROVIDED  ``AS  IS''  AND   ANY  EXPRESS  OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT,  INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef CACHE_H
#define CACHE_H

#include "memconfig.h"

extern void cache_init(void);

  // --cache_init-- 
  //   Iinitializes and enables any supported caches.
  //   Only called after rrload has be moved to SD RAM.

extern void icache_enable(void);

  // --icache_enable-- 
  //   Enables icache

extern void icache_clear(void);

  // --icache_clear-- 
  //   Clears the icache contents

extern void icache_disable(void);

  // --icache_idsable-- 
  //   Disables icache

#endif //CACHE_H