source: SVN/rincon/u-boot/cpu/at32ap/cache.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 22 months ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.7 KB
Line 
1/*
2 * Copyright (C) 2004-2006 Atmel Corporation
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20 * MA 02111-1307 USA
21 */
22
23#include <common.h>
24
25#include <asm/cacheflush.h>
26
27void dcache_clean_range(volatile void *start, size_t size)
28{
29        unsigned long v, begin, end, linesz;
30
31        linesz = CFG_DCACHE_LINESZ;
32
33        /* You asked for it, you got it */
34        begin = (unsigned long)start & ~(linesz - 1);
35        end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
36
37        for (v = begin; v < end; v += linesz)
38                dcache_clean_line((void *)v);
39
40        sync_write_buffer();
41}
42
43void dcache_invalidate_range(volatile void *start, size_t size)
44{
45        unsigned long v, begin, end, linesz;
46
47        linesz = CFG_DCACHE_LINESZ;
48
49        /* You asked for it, you got it */
50        begin = (unsigned long)start & ~(linesz - 1);
51        end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
52
53        for (v = begin; v < end; v += linesz)
54                dcache_invalidate_line((void *)v);
55}
56
57void dcache_flush_range(volatile void *start, size_t size)
58{
59        unsigned long v, begin, end, linesz;
60
61        linesz = CFG_DCACHE_LINESZ;
62
63        /* You asked for it, you got it */
64        begin = (unsigned long)start & ~(linesz - 1);
65        end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
66
67        for (v = begin; v < end; v += linesz)
68                dcache_flush_line((void *)v);
69
70        sync_write_buffer();
71}
72
73void icache_invalidate_range(volatile void *start, size_t size)
74{
75        unsigned long v, begin, end, linesz;
76
77        linesz = CFG_ICACHE_LINESZ;
78
79        /* You asked for it, you got it */
80        begin = (unsigned long)start & ~(linesz - 1);
81        end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
82
83        for (v = begin; v < end; v += linesz)
84                icache_invalidate_line((void *)v);
85}
86
87/*
88 * This is called after loading something into memory.  We need to
89 * make sure that everything that was loaded is actually written to
90 * RAM, and that the icache will look for it. Cleaning the dcache and
91 * invalidating the icache will do the trick.
92 */
93void  flush_cache (unsigned long start_addr, unsigned long size)
94{
95        dcache_clean_range((void *)start_addr, size);
96        icache_invalidate_range((void *)start_addr, size);
97}
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