arm/footbridge/footbridge_machdep.c

1.3.6.7  nathanw /*	$NetBSD: footbridge_machdep.c,v 1.3.6.7 2002/06/20 03:38:08 nathanw Exp $	*/
1.3.6.2  nathanw
1.3.6.2  nathanw /*
1.3.6.2  nathanw  * Copyright (c) 1997 Mark Brinicombe.
1.3.6.2  nathanw  * Copyright (c) 1997 Causality Limited
1.3.6.2  nathanw  * All rights reserved.
1.3.6.2  nathanw  *
1.3.6.2  nathanw  * Redistribution and use in source and binary forms, with or without
1.3.6.2  nathanw  * modification, are permitted provided that the following conditions
1.3.6.2  nathanw  * are met:
1.3.6.2  nathanw  * 1. Redistributions of source code must retain the above copyright
1.3.6.2  nathanw  *    notice, this list of conditions and the following disclaimer.
1.3.6.2  nathanw  * 2. Redistributions in binary form must reproduce the above copyright
1.3.6.2  nathanw  *    notice, this list of conditions and the following disclaimer in the
1.3.6.2  nathanw  *    documentation and/or other materials provided with the distribution.
1.3.6.2  nathanw  * 3. All advertising materials mentioning features or use of this software
1.3.6.2  nathanw  *    must display the following acknowledgement:
1.3.6.2  nathanw  *	This product includes software developed by Mark Brinicombe
1.3.6.2  nathanw  *	for the NetBSD Project.
1.3.6.2  nathanw  * 4. The name of the company nor the name of the author may be used to
1.3.6.2  nathanw  *    endorse or promote products derived from this software without specific
1.3.6.2  nathanw  *    prior written permission.
1.3.6.2  nathanw  *
1.3.6.2  nathanw  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
1.3.6.2  nathanw  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
1.3.6.2  nathanw  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
1.3.6.2  nathanw  * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
1.3.6.2  nathanw  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
1.3.6.2  nathanw  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
1.3.6.2  nathanw  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.3.6.2  nathanw  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.3.6.2  nathanw  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.3.6.2  nathanw  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.3.6.2  nathanw  * SUCH DAMAGE.
1.3.6.2  nathanw  */
1.3.6.2  nathanw
1.3.6.2  nathanw #include <sys/param.h>
1.3.6.2  nathanw #include <sys/systm.h>
1.3.6.2  nathanw #include <uvm/uvm_extern.h>
1.3.6.2  nathanw #include <machine/pmap.h>
1.3.6.3  nathanw #include <arm/footbridge/footbridge.h>
1.3.6.2  nathanw #include <arm/footbridge/dc21285mem.h>
1.3.6.2  nathanw
1.3.6.2  nathanw /*
1.3.6.2  nathanw  * For optimal cache cleaning we need two 16K banks of
1.3.6.2  nathanw  * virtual address space that NOTHING else will access
1.3.6.2  nathanw  * and then we alternate the cache cleaning between the
1.3.6.2  nathanw  * two banks.
1.3.6.2  nathanw  * The cache cleaning code requires requires 2 banks aligned
1.3.6.2  nathanw  * on total size boundry so the banks can be alternated by
1.3.6.2  nathanw  * eorring the size bit (assumes the bank size is a power of 2)
1.3.6.2  nathanw  *
1.3.6.2  nathanw  * On the DC21285 we have a special cache clean area so we will
1.3.6.2  nathanw  * use it.
1.3.6.2  nathanw  */
1.3.6.2  nathanw
1.3.6.7  nathanw extern unsigned int sa1_cache_clean_addr;
1.3.6.7  nathanw extern unsigned int sa1_cache_clean_size;
1.3.6.2  nathanw
1.3.6.2  nathanw void
1.3.6.2  nathanw footbridge_sa110_cc_setup(void)
1.3.6.2  nathanw {
1.3.6.7  nathanw 	sa1_cache_clean_addr = DC21285_CACHE_FLUSH_VBASE;
1.3.6.7  nathanw 	sa1_cache_clean_size = (NBPG * 4);
1.3.6.2  nathanw }