regions.h

ARM嵌入式系统开发--软件设计与优化随书源代码。开发环境asm+c

/*
 *  ____________________________________________________________________
 * 
 *  Copyright (c) 2002, Andrew N. Sloss, Chris Wright and Dominic Symes
 *  All rights reserved.
 *  ____________________________________________________________________
 * 
 *  NON-COMMERCIAL USE License
 *  
 *  Redistribution and use in source and binary forms, with or without 
 *  modification, are permitted provided that the following conditions 
 *  are met: 
 *  
 *  1. For NON-COMMERCIAL USE only.
 * 
 *  2. Redistributions of source code must retain the above copyright 
 *     notice, this list of conditions and the following disclaimer. 
 * 
 *  3. 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. 
 * 
 *  4. All advertising materials mentioning features or use of this 
 *     software must display the following acknowledgement:
 * 
 *     This product includes software developed by Andrew N. Sloss,
 *     Chris Wright and Dominic Symes. 
 * 
 *   THIS SOFTWARE IS PROVIDED BY THE 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 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. 
 * 
 *  If you have questions about this license or would like a different
 *  license please email :
 * 
 * 	[e-mail]
 * 
 * 
 */
 
/*****************************************************************************
 * Simple Little Operating System - mpuSLOS
 *****************************************************************************/

/*****************************************************************************
 *
 * Module      : regions.h
 * Description : standards defines for the MPU
 * Platform    : CM940IAP
 * History     :
 *
 * 4 July 2002 (Independence Day) Andrew N. Sloss 
 * - taken from Chris Wright MPU example
 *
 *****************************************************************************/

/*****************************************************************************
 * MACROS
 *****************************************************************************/

/* Region Size */
#define SIZE_4G   31
#define SIZE_2G   30
#define SIZE_1G   29
#define SIZE_512M 28
#define SIZE_256M 27
#define SIZE_128M 26
#define SIZE_64M  25
#define SIZE_32M  24
#define SIZE_16M  23
#define SIZE_8M   22
#define SIZE_4M   21
#define SIZE_2M   20
#define SIZE_1M   19
#define SIZE_512K 18
#define SIZE_256K 17
#define SIZE_128K 16
#define SIZE_64K  15
#define SIZE_32K  14
#define SIZE_16K  13
#define SIZE_8K   12
#define SIZE_4K   11

/* CB = ICache[2], DCache[1], Write Buffer[0] */
#define CCB 7
#define CCb 6
#define CcB 5
#define Ccb 4
#define cCB 3
#define cCb 2
#define ccB 1
#define ccb 0

/* CB by function */
/* ICache[2], WB[1:0] = writeback, WT[1:0] = writethrough */
#define CWB 7
#define CWT 6
#define cWB 3
#define cWT 2

/* Data Permissions */
#define rwrw 0
#define RWrw 1 
#define RWRw 2 
#define RWRW 3 

/* Instruction Permissions */
#define xx 0
#define Xx 1 
#define XX 3


/* Std System Permissions = (inst[7:4] + data[3:0]) */
#define rwxrwx (xx << 4) + (rwrw)
#define RWxrwx (xx << 4) + (RWrw)
#define RWxRwx (xx << 4) + (RWRw)
#define RWxRWx (xx << 4) + (RWRW)

#define rwXrwx (Xx << 4) + (rwrw)
#define RWXrwx (Xx << 4) + (RWrw)
#define RWXRwx (Xx << 4) + (RWRw)
#define RWXRWx (Xx << 4) + (RWRW)

#define rwXrwX (XX << 4) + (rwrw)
#define RWXrwX (XX << 4) + (RWrw)
#define RWXRwX (XX << 4) + (RWRw)
#define RWXRWX (XX << 4) + (RWRW)

#define R_ENABLE 1
#define R_DISABLE 0


/* Region Number Assignment */
#define  BACKGROUND 0 
#define  PROTECTED_SYSTEM 1 
#define  TASK  2 
#define  SHARED_SYSTEM 3 
#define  PERIPHERAL  4 
#define  LEDPERIPHERAL  5 


/* Define Task starting Address */

#define dfltBASE 0x00000000