cache.c

来自「嵌入式操作系统T-Kernel 完整代码」· C语言 代码 · 共 41 行

/*
 *----------------------------------------------------------------------
 *    T-Kernel
 *
 *    Copyright (C) 2004 by Ken Sakamura. All rights reserved.
 *    T-Kernel is distributed under the T-License.
 *----------------------------------------------------------------------
 *
 *    Version:   1.01.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2004/6/28.
 *
 *----------------------------------------------------------------------
 */

/*
 *	cache.c (M32104)
 *	Cache Operation
 */

#include <basic.h>
#include <tk/tkernel.h>
#include <tk/sysdef.h>

/*
 * Cache flush
 *	Flush cache between 'laddr' and 'len' bytes areas.
 *	Writeback and disable cache
 */
EXPORT void FlushCache( VP laddr, INT len )
{
	UINT	imask;

	DI(imask);

	/* Flush the whole cache because only the whole cache
	   can be controlled */
	*(_UW*)CC_MCCR |= CC_DCB|CC_DIV|CC_IIV;

	EI(imask);
}