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/*
ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio.
This file is part of ChibiOS.
ChibiOS is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file mmu.h
* @brief MMU macros and structures.
*
* @addtogroup MMU
* @{
*/
#ifndef MMU_H
#define MMU_H
#if defined(CH_CFG_USE_MMU) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Module constants. */
/*===========================================================================*/
#define DCISW_INVALIDATE 0
#define DCISW_CLEAN 1
#define DCISW_CLEAN_AND_INV 2
/*===========================================================================*/
/* Module pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Module data structures and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Module macros. */
/*===========================================================================*/
/*
* Translation Table Entry descriptor macros
*
* Type Section layout:
* +---------+--+-+--+-+-----+--------+-------+-+------+--+-+-+-+---+
* |3 2|1 |1|1 |1|1 |1 1|1 1| | | | | | | |
* |1 0|9 |8|7 |6|5 |4 2|1 0|9|8 5|4 |3|2|1|0 |
* +---------+--+-+--+-+-----+--------+-------+-+------+--+-+-+-+---+
* | section |NS|0|nG|S|AP[2]|TEX[2:0]|AP[1:0]| |domain|XN|C|B|1|PXN|
* +---------+--+-+--+-+-----+--------+-------+-+------+--+-+-+-+---+
*
*/
#define TTE_TYPE_SECT (0x01 << 1)
#define TTE_SECT_B (0x01 << 2)
#define TTE_SECT_C (0x01 << 3)
#define TTE_SECT_XN (0x01 << 4)
#define TTE_SECT_DOM(x) ((x) << 5)
#define TTE_SECT_AP0 (0x01 << 10)
#define TTE_SECT_AP1 (0x01 << 11)
#define TTE_SECT_TEX(x) ((x) << 12)
#define TTE_SECT_AP2 (0x01 << 15)
#define TTE_SECT_S (0x01 << 16)
#define TTE_SECT_NG (0x01 << 17)
#define TTE_SECT_NS (0x01 << 19)
#define TTE_SECT_MEM_CACHEABLE (TTE_SECT_TEX(0b111)|TTE_SECT_B|TTE_SECT_C)
#define TTE_SECT_MEM_NO_CACHEABLE (TTE_SECT_TEX(0b100))
#define TTE_SECT_MEM_STRONGLY_ORD (TTE_SECT_TEX(0b000))
#define TTE_SECT_DEVICE (TTE_SECT_B)
#define TTE_SECT_EXE_NEVER (TTE_SECT_XN)
#define TTE_SECT_RW_ACCESS (TTE_SECT_AP1|TTE_SECT_AP0)
#define TTE_SECT_RO_ACCESS (TTE_SECT_AP1)
#define TTE_SECT_UNDEF (0)
#define TTE_SECT_SECTION(addr) ((addr) & 0xFFF00000)
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void __mmu_init(void);
#ifdef __cplusplus
}
#endif
/*===========================================================================*/
/* Module inline functions. */
/*===========================================================================*/
#endif /* CH_CFG_USE_MMU */
#endif /* MMU_H */
/** @} */
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