memdef_depend.h

T-kernel 的extension源代码

/*
 *----------------------------------------------------------------------
 *    T-Kernel / Standard Extension
 *
 *    Copyright (C) 2006 by Ken Sakamura. All rights reserved.
 *    T-Kernel / Standard Extension is distributed 
 *      under the T-License for T-Kernel / Standard Extension.
 *----------------------------------------------------------------------
 *
 *    Version:   1.00.00
 *    Released by T-Engine Forum(http://www.t-engine.org) at 2006/8/11.
 *
 *----------------------------------------------------------------------
 */

/*
 *	memdef.h
 *
 *	Memory map definitions
 */

#ifndef __SYS_MEMDEF_DEPEND_H__
#define __SYS_MEMDEF_DEPEND_H__

#include <tk/sysdef.h>

#define	PAGESIZE	4096		/* Page size (number of bytes) */

/*
 * Memory map of T-Engine/MC9328
 *
 *   0x00000000	+-------------------------------+    -- 0x10000000
 *		|Boot ROM	  (1MB)		|*3  |	Same as first 1MB of ROM
 *   0x00100000	+-------------------------------+    -- 0x10100000
 *		|(Not used)			|*1
 *   0x00200000	+-------------------------------+
 *		|Internal register		|*2
 *		|(Incl unused area)		|
 *   0x00300000	+-------------------------------+
 *		|Built-in SRAM	(128KB)		|
 *		|(Incl unused area)		|
 *   0x00400000	+-------------------------------+
 *		|(Not used)			|*1
 *   0x08000000	+-------------------------------+
 *		|RAM	         (64MB)		|
 *   0x0c000000	+-------------------------------+
 *		|(Not usable)			|*1
 *   0x10000000	+-------------------------------+
 *		|ROM		 (16MB)		|*3
 *   0x12000000	+-------------------------------+
 *		|(Not used)			|*1
 *   0x13000000	+-------------------------------+
 *		|(Not usable)			|*1
 *   0x14000000	+-------------------------------+
 *		|Peripheral device		|*2
 *   0x16000000	+-------------------------------+
 *		|(Open to user)			|*2
 *   0x17000000	+-------------------------------+
 *		|(Not used)			|*1
 *   0x40000000	+-------------------------------+    --
 *		|Task-specific space		|    ^
 *   0x50000000	+-------------------------------+    |
 *		|(Reserved task-specific space)	|    |	Virtual memory
 *   0x80000000	+-------------------------------+    |
 *		|Shared memory space		|    |
 *   0xc0000000	+-------------------------------+    |
 *		|For program map		|    |
 *   0xd0000000	+-------------------------------+    |
 *		|For memory map			|    v
 *   0xe0000000	+-------------------------------+    --
 *		|(Not used)			|*1
 *   0xffffffff	+-------------------------------+
 *
 *    * In virtual memory areas, mapping of logical and physical addresses is dynamically
 *	changed by OS. In the other areas, logical and physical addresses are mapped to the
 *	same areas and the mapping is not dynamically changed.
 *    * In areas other than virtual memory area, T-Monitor performs
 *	mapping at startup (initialization) to enable MMU, cache and
 *	write buffer.
 *	  In areas indicated by *1 and virtual memory areas, do not perform mapping and disable
 *	  access.
 *	  In areas indicated by *2, turn off cache and write buffer.
 *	  Areas indicated by *3 must be made read-only.
 *	Perform mapping on a section (1MB) basis. All domains must be zero.
 *	Disable any user-level access.
 *    * The built-in SRAM is located in an area that is not used by OS or monitor.
 */

/*
 * Conversion between physical and logical addresses in real memory area
 */
#define	toLogicalAddress(paddr)		(VP)(paddr)
#define	toPhysicalAddress(laddr)	(VP)(laddr)

/*
 * Range of address in real memory area
 */
#define	REALMEMORY_TOP			0x08000000U
#define	REALMEMORY_END			0x0c000000U

/*
 * Range of address in local space (0x40000000  -  0x50000000)
 */
#define	LOCALSPACE_TOP			( TOP_PDIR_ENTRIES * 0x00100000U )
#define	LOCALSPACE_END			( (TOP_PDIR_ENTRIES + NUM_PDIR_ENTRIES) * 0x00100000U )

/*
 * Range of address in shared/system memory space
 */
#define	SYSSPACE_TOP			0x80000000U
#define	SYSSPACE_END			0xc0000000U

/*
 * Range of address in system program map space
 */
#define	SYSPRGSPACE_TOP			0xc0000000U
#define	SYSPRGSPACE_END			0xd0000000U

/*
 * Range of address in I/O space
 */
#define	IOSPACE_TOP			0xd0000000U
#define	IOSPACE_END			0xe0000000U

/*
 * Within ROM area: True
 */
#define	isROM(addr)			( ((UW)(addr) < 0x00100000U) \
					|| ( ((UW)(addr) >= 0x10000000U) \
					  && ((UW)(addr) <  0x12000000U) ) )

/*
 * Within logical space: True
 */
#define	isLogicalSpace(addr)		(  ((UW)(addr) >= 0x40000000U) \
					&& ((UW)(addr) <  0xe0000000U) )

/*
 * Range of section corresponding to logical space
 */
#define	LOGICALSPACE_SECTION_TOP	( 0x40000000U / (1024 * 1024) )
#define	LOGICALSPACE_SECTION_END	( 0xe0000000U / (1024 * 1024) )

#endif