95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
/* -*-C++-*- $NetBSD: arm_mmu.h,v 1.1 2001/02/09 18:34:55 uch Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2001 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by UCHIYAMA Yasushi.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _HPCBOOT_ARM_MMU_H_
|
|
#define _HPCBOOT_ARM_MMU_H_
|
|
|
|
#include <arm/arm_arch.h>
|
|
#include <memory.h>
|
|
|
|
#define ARM_MMU_TABLEBASE_MASK 0xffffc000
|
|
#define ARM_MMU_TABLEINDEX_MASK 0x00003ffc
|
|
#define ARM_MMU_VADDR_TABLE_INDEX_MASK 0xfff00000
|
|
#define ARM_MMU_TABLEINDEX_SHIFT 18
|
|
#define ARM_MMU_TABLEINDEX(x) \
|
|
((((x) & ARM_MMU_VADDR_TABLE_INDEX_MASK) >> \
|
|
ARM_MMU_TABLEINDEX_SHIFT) & ARM_MMU_TABLEINDEX_MASK)
|
|
|
|
/*
|
|
* 1st level descriptor
|
|
*/
|
|
#define ARM_MMU_LEVEL1DESC_TRANSLATE_TYPE_MASK 0x3
|
|
#define ARM_MMU_LEVEL1DESC_TRANSLATE_TYPE(x) \
|
|
((x) & ARM_MMU_LEVEL1DESC_TRANSLATE_TYPE_MASK)
|
|
#define ARM_MMU_LEVEL1DESC_TRANSLATE_SECTION 0x2
|
|
#define ARM_MMU_LEVEL1DESC_TRANSLATE_PAGE 0x1
|
|
|
|
/*
|
|
* Section translation
|
|
*/
|
|
#define ARM_MMU_SECTION_BASE_MASK 0xfff00000
|
|
#define ARM_MMU_SECTION_BASE(x) \
|
|
((x) & ARM_MMU_SECTION_BASE_MASK)
|
|
#define ARM_MMU_VADDR_SECTION_INDEX_MASK 0x000fffff
|
|
#define ARM_MMU_VADDR_SECTION_INDEX(x) \
|
|
((x) & ARM_MMU_VADDR_SECTION_INDEX_MASK)
|
|
/*
|
|
* Page translation
|
|
*/
|
|
#define ARM_MMU_PTE_BASE_MASK 0xfffffc00
|
|
#define ARM_MMU_PTE_BASE(x) ((x) & ARM_MMU_PTE_BASE_MASK)
|
|
#define ARM_MMU_VADDR_PTE_INDEX_MASK 0x000003fc
|
|
#define ARM_MMU_VADDR_PTE_INDEX_SHIFT 10
|
|
#define ARM_MMU_VADDR_PTE_INDEX(x) \
|
|
(((x) >> ARM_MMU_VADDR_PTE_INDEX_SHIFT) & \
|
|
ARM_MMU_VADDR_PTE_INDEX_MASK)
|
|
|
|
class MemoryManager_ArmMMU : public MemoryManager {
|
|
private:
|
|
BOOL _kmode;
|
|
paddr_t _table_base;
|
|
|
|
public:
|
|
MemoryManager_ArmMMU(Console *&, size_t);
|
|
virtual ~MemoryManager_ArmMMU();
|
|
BOOL init(void);
|
|
paddr_t searchPage(vaddr_t vaddr);
|
|
};
|
|
|
|
#endif // _HPCBOOT_ARM_MMU_H_
|