bsp.s

基于nucleus操作系统的GPRS无线数据传输终端全套源文件。包括支持ARM7的BSP,操作系统

;/*************************************************************************/
;/*                                                                       */
;/*            Copyright (c) 2002 - 2004 Digiway, Inc.                    */
;/*                                                                       */
;/* PROPRIETARY RIGHTS of Watertek are involved in the subject matter of  */
;/* this material.  All manufacturing, reproduction, use, and sales       */
;/* rights pertaining to this subject matter are governed by the license  */
;/* agreement.  The recipient of this software implicitly accepts the     */
;/* terms of the license.                                                 */
;/*                                                                       */
;/*************************************************************************/
;
;/*************************************************************************/
;/*                                                                       */
;/* FILE NAME                                            VERSION          */
;/*                                                                       */
;/*      int.s                                       KS32C41100 1.0       */
;/*                                                                       */
;/* COMPONENT                                                             */
;/*                                                                       */
;/*      IN - Initialization                                              */
;/*                                                                       */
;/* DESCRIPTION                                                           */
;/*                                                                       */
;/*      This file contains the target processor dependent initialization */
;/*      routines and data.                                               */
;/*                                                                       */
;/* AUTHOR                                                                */
;/*      Gai, Feng, Watertek, Inc.                                        */
;/*                                                                       */
;/* DATA STRUCTURES                                                       */
;/*                                                                       */
;/*      INT_Vectors                         Interrupt vector table       */
;/*                                                                       */
;/* FUNCTIONS                                                             */
;/*                                                                       */
;/*      INT_Initialize                      Target initialization        */
;/*      INT_Vectors_Loaded                  Returns a NU_TRUE if all the */
;/*                                            default vectors are loaded */
;/*      INT_Setup_Vector                    Sets up an actual vector     */
;/*                                                                       */
;/* DEPENDENCIES                                                          */
;/*                                                                       */
;/*      nucleus.h                           System constants             */
;/*                                                                       */
;/* HISTORY                                                               */
;/*                                                                       */
;/*         NAME            DATE                    REMARKS               */
;/*                                                                       */
;/*        F. Gai         2000-04-03      Created initial version 1.0     */
;/*		   M. Chen		  2002-07-12	  Modified for 41100		      */
;/*                                                                       */
;/*************************************************************************/

;
;#include        "nucleus.h"                 /* System constants          */
;


;/* Vector Table Address at The Top of Memory */
EXPHDL_TBLBASE	EQU		0x0c7fff00

;/* Interrupt Controller Register */ 
I_ISPR			EQU		0x01e00020
I_ISPC			EQU		0x01e00024
TIMER0_MASK_BIT	EQU		0x00002000			; bit 13 in INTMSK

;
;/* Define constants used in low-level initialization.  */
;
;
LOCKOUT			EQU		&C0				; Interrupt lockout value
LOCK_MSK		EQU     &C0				; Interrupt lockout mask value
MODE_MASK		EQU     &1F				; Processor Mode Mask
SUP_MODE		EQU     &13				; Supervisor Mode (SVC)

IRQ_MODE		EQU     &12				; Interrupt Mode (IRQ)
FIQ_MODE		EQU     &11				; Fast Interrupt Mode (FIQ)
I_BIT			EQU		0x80			; Interrupt bit of CPSR and SPSR
F_BIT			EQU     0x40			; Interrupt bit of CPSR and SPSR

;
; /* Constants used in NU+ */
;
IRQ_STACK_SIZE  EQU     512                 ; Number of bytes in IRQ stack
                                            ; -Note that the IRQ interrupt,
                                            ; by default, is managed by 
                                            ; Nucleus PLUS.  Only several
                                            ; words are actually used.  The 
                                            ; system stack is what will 
                                            ; actually be used for Nuclues
                                            ; PLUS managed IRQ interrupts.
FIQ_STACK_SIZE  EQU     512                 ; Number of bytes in FIQ stack.
                                            ; This value is application 
                                            ; specific.  By default, Nucleus
                                            ; does not manage FIQ interrupts
                                            ; and furthermore, leaves them
                                            ; enabled virtually all the time.
SYSTEM_SIZE     EQU     1024                ; Define the system stack size
TIMER_SIZE      EQU     1024                ; Define timer HISR stack size
TIMER_PRIORITY  EQU     2                   ; Timer HISR priority (values from
                                            ; 0 to 2, where 0 is highest)

;
;/* End of low-level initialization constants.  */
;

	AREA |C$$data|,DATA
|x$dataseg|

;/* Define the initialization flag that indicates whether or not all of the
;   default vectors have been loaded during initialization.  */
;
;INT    INT_Loaded_Flag;

	EXPORT  INT_Loaded_Flag
INT_Loaded_Flag
	DCD     &00000000
INT_Pending_Bit
	DCD		&00000000


	AREA |C$$code|, CODE, READONLY
|x$codeseg|
;
;
;/* Define the global data structures that need to be initialized by this
;   routine.  These structures are used to define the system timer management
;   HISR. 
; */ 
;extern VOID     *TMD_HISR_Stack_Ptr;
;extern UNSIGNED  TMD_HISR_Stack_Size;
;extern INT       TMD_HISR_Priority;
;
	IMPORT  TMD_HISR_Stack_Ptr
	IMPORT  TMD_HISR_Stack_Size
	IMPORT  TMD_HISR_Priority

;VOID   TCT_Interrupt_Context_Save(VOID);
;VOID   TCT_Interrupt_Context_Restore(VOID);
;VOID   TCC_Dispatch_LISR(INT vector_number);
;VOID   TMT_Timer_Interrupt(void);
;
	IMPORT	TCT_Interrupt_Context_Save
	IMPORT	TMT_Timer_Interrupt
	IMPORT	TCC_Dispatch_LISR
	IMPORT	TCT_Interrupt_Context_Restore

;/* Define the global system stack variable.  This is setup by the 
;   initialization routine.  
;*/
;extern VOID            *TCD_System_Stack;
;
	IMPORT  TCD_System_Stack
	IMPORT  TCT_System_Limit
	
	IMPORT	INC_Initialize
	IMPORT	Board_Init

    MACRO
$HandlerLabel HANDLER $HandleLabel

$HandlerLabel
    sub	    sp,sp,#4	    ;decrement sp(to store jump address)
    stmfd   sp!,{r0}	    ;PUSH the work register to stack(lr does't push because it return to original address)
    ldr	    r0,=$HandleLabel;load the address of HandleXXX to r0
    ldr	    r0,[r0]	    ;load the contents(service routine start address) of HandleXXX
    str	    r0,[sp,#4]	    ;store the contents(ISR) of HandleXXX to stack
    ldmfd   sp!,{r0,pc}	    ;POP the work register and pc(jump to ISR)
    MEND

;
;/* Define various data structure pointers so their addresses can be obtained 
;   in a PC-relative manner.  */
;

	B	INT_Initialize
	B 	HandlerUndef
	B	HandlerSWI	
	B	HandlerPabort
	B	HandlerDabort
	B   .		            ; NO LONGER USED
	B	HandlerIRQ	
	B	HandlerFIQ
	
	LTORG
	
HandlerFIQ		HANDLER HandleFIQ
HandlerIRQ		HANDLER HandleIRQ
HandlerUndef	HANDLER HandleUndef
HandlerSWI		HANDLER HandleSWI
HandlerDabort	HANDLER HandleDabort
HandlerPabort	HANDLER HandlePabort

INT_Table

INT_Initialize_Addr		DCD	INT_Initialize
Undef_Instr_Addr		DCD	Undef_Instr_ISR
SWI_Addr			    DCD	SWI_ISR	
Prefetch_Abort_Addr		DCD	Prefetch_Abort_ISR
Data_Abort_Addr			DCD	Data_Abort_ISR
Undefined_Addr			DCD	0	            ; NO LONGER USED
IRQ_Handler_Addr		DCD	INT_IRQ_Parse	
FIQ_Handler_Addr		DCD	INT_FIQ_Parse

Loaded_Flag
	DCD     INT_Loaded_Flag
;
HISR_Stack_Ptr
	DCD     TMD_HISR_Stack_Ptr
;
HISR_Stack_Size
	DCD     TMD_HISR_Stack_Size
;
HISR_Priority
	DCD     TMD_HISR_Priority
;
System_Stack
	DCD     TCD_System_Stack
;
System_Limit
	DCD     TCT_System_Limit
	
	
BSS_Start_Ptr
	IMPORT  |Image$$ZI$$Base|
	DCD     |Image$$ZI$$Base|
;
BSS_End_Ptr
	IMPORT  |Image$$ZI$$Limit|
	DCD     |Image$$ZI$$Limit|
;
ROM_Data_Start_Ptr
	IMPORT  |Image$$RO$$Limit|
	DCD     |Image$$RO$$Limit|
;
RAM_Start_Ptr
	IMPORT  |Image$$RW$$Base|
	DCD     |Image$$RW$$Base|
;
;
OLD_UNDEF_VECT
	DCD	&00000000
;
OLD_UNDEF_ADDR
	DCD	&00000000
;
OLD_SWI_VECT
	DCD	&00000000
;
OLD_SWI_ADDR
	DCD	&00000000
;
OLD_IRQ_VECT
	DCD	&00000000
;
OLD_IRQ_ADDR
	DCD	&00000000