RTEMS 7.0-rc1
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mmu.h
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1/* SPDX-License-Identifier: BSD-2-Clause */
2
9/*
10 * Copyright (C) 2004 Cogent Computer Systems
11 * Written by Jay Monkman <jtm@lopingdog.com>
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef __LIBCPU_MMU_H__
36#define __LIBCPU_MMU_H__
37
38#include <stdint.h>
39
40#define MMU_SECT_SIZE 0x100000
41
42#define MMU_CACHE_NONE 0x0
43#define MMU_CACHE_BUFFERED 0x1
44#define MMU_CACHE_WTHROUGH 0x2
45#define MMU_CACHE_WBACK 0x3
46
47typedef struct {
48 uint32_t paddr;
49 uint32_t vaddr;
50 uint32_t size; /* in MB */
51 uint8_t cache_flags;
53
54void mmu_init(mmu_sect_map_t *map);
55void mmu_set_cpu_async_mode(void);
56
57#endif /* __MMU_H__ */
Definition: mm.c:62
Definition: mmu.h:47