9d4436a6fb
This implements initial support for the SH7206 (SH-2A) and SH7619 (SH-2) MMU-less CPUs. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
58 lines
1.3 KiB
C
58 lines
1.3 KiB
C
/*
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* arch/sh/mm/cache-sh2.c
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*
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* Copyright (C) 2002 Paul Mundt
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*
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <asm/cache.h>
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#include <asm/addrspace.h>
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#include <asm/processor.h>
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#include <asm/cacheflush.h>
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#include <asm/io.h>
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void __flush_wback_region(void *start, int size)
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{
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unsigned long v;
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unsigned long begin, end;
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begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
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end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
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& ~(L1_CACHE_BYTES-1);
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for (v = begin; v < end; v+=L1_CACHE_BYTES) {
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/* FIXME cache purge */
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ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
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}
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}
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void __flush_purge_region(void *start, int size)
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{
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unsigned long v;
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unsigned long begin, end;
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begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
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end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
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& ~(L1_CACHE_BYTES-1);
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for (v = begin; v < end; v+=L1_CACHE_BYTES) {
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ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
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}
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}
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void __flush_invalidate_region(void *start, int size)
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{
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unsigned long v;
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unsigned long begin, end;
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begin = (unsigned long)start & ~(L1_CACHE_BYTES-1);
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end = ((unsigned long)start + size + L1_CACHE_BYTES-1)
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& ~(L1_CACHE_BYTES-1);
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for (v = begin; v < end; v+=L1_CACHE_BYTES) {
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ctrl_outl((v & 0x1ffffc00), (v & 0x00000ff0) | 0x00000008);
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}
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}
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