main.inc

嵌入式系统启动代码

;------------------------------------------------------------------------------
;
;  COPYRIGHT (C) 2000, 2001 Intel Corporation.
;
;  This software as well as the software described in it is furnished under 
;  license and may only be used or copied in accordance with the terms of the 
;  license. The information in this file is furnished for informational use 
;  only, is subject to change without notice, and should not be construed as 
;  a commitment by Intel Corporation. Intel Corporation assumes no 
;  responsibility or liability for any errors or inaccuracies that may appear 
;  in this document or any software that may be provided in association with 
;  this document. 
;  Except as permitted by such license, no part of this document may be 
;  reproduced, stored in a retrieval system, or transmitted in any form or by 
;  any means without the express written consent of Intel Corporation. 
;
;  FILENAME: main.inc
;
;  PURPOSE: This file contains the platform dependent startup code definitions.
;
;  LAST MODIFIED: $Modtime: $
;------------------------------------------------------------------------------

    IF :LNOT: :DEF: _main_inc_
_main_inc_   EQU     1


;
; Default stack location
;
ROM_Base          		EQU    	0x00000000
ROM_Size          		EQU    	0x00180000
RAM_Base          		EQU    	0xA0000000 
Globe_Variable_Size		EQU		4*32*1024
STACK_SIZE        		EQU    	1024*8
RAM_Source_Base			EQU 	RAM_Base + Globe_Variable_Size +STACK_SIZE
STACK_LOCATION			EQU		RAM_Source_Base


RELOCATE_ROM	  EQU	 1 	


;________________________ROM_Base (0x0000,0000)
;|                     |
;|                     |
;|                     |
;|       ROM           |
;|                     | 
;|                     |
;________________________ROM_Base + ROM_Size
;|                     |
;|                     |
;|                     |
;|                     |
;~                     ~  
;|                     |
;|                     |
;|                     |
;________________________RAM_Base, R9 ---
;|                     |           |  
;|       Globe         |          \|/
;|     Variable        |
;========================RAM_Base + Globe_Variable_Size
;|                     |          
;|       Stack         |          /|\;
;|                     |           |
;________________________RAM_Source_Base
;|                     |
;|  RAM_Source_Base    |
;|                     |
;|                     |
;________________________





;
; CPSR definitions
;
; 31  30   29  28  27  26................8  7   6   5   4    3    2   1     0  
;+---+---+---+---+---+--------------------+---+---+---+----+----+----+----+----+
;| N | Z | C | V | Q |       DNM(RAZ) b   | I | F | T | M4 | M3 | M2 | M1 | M0 |
;+-----------------------------------------------------------------------------+
; Where:
;     N - Negative, Z - Zero, C - Carry, V - Overflow, Q - DSP Overflow
;     I - Disables IRQ, F - Disables FIQ, T - Thumb
;     M4 - M0 - 10000 - User, 10001 - FIQ, 10010 - IRQ, 10011 - Supervisor
;             - 10111 - Abort, 11011 - Undefined, 11111 - System
;
CPSR_Mode_FIQ    EQU    0x11
CPSR_Mode_IRQ    EQU    0x12
CPSR_Mode_SVC    EQU    0x13
CPSR_Mode_ABT    EQU    0x17
CPSR_Mode_UND    EQU    0x1B
CPSR_Mode_SYS    EQU    0x1F
CPSR_Mode_Mask   EQU    0x1F

CPSR_I_Bit       EQU    0x80
CPSR_F_Bit       EQU    0x40
CPSR_Int_Mask    EQU    0xC0

    ENDIF

    END