systimer.s

bsp for px270 SCAL的bsp 已经调试通过 for vxworks5.5

/* sysTimer.s - pxa270 low level system timer support for sysTimer.c */

/* Copyright 2002 Wind River Systems, Inc. */

/*
TODO -  Remove the pxa270 modification history and begin a new history
        starting with version 01a and growing the history upward with
        each revision.

modification history
--------------------
01a,21may02,scm  written.
*/

/*
DESCRIPTION
This module contains low level system timer support routines written in assembly
language for sysTimer.c.
*/

#define _ASMLANGUAGE

#include "vxWorks.h"
#include "regs.h"
#include "arch/arm/arm.h"
#include "arch/arm/mmuArmLib.h"
#include "arch/arm/excArmLib.h"
#include "sysLib.h"
#include "config.h"

        .data
        .globl   VAR(copyright_wind_river)
        .long    VAR(copyright_wind_river)

/*
 * TODO - add low level system timer support routines
 * for the timer controller.
 */

        /* internals */

        /* Read/Write Timer Mode Registers */
        .globl  FUNC(sysRead_TMR0)
        .globl  FUNC(sysRead_TMR1)

        .globl  FUNC(sysWrite_TMR0)
        .globl  FUNC(sysWrite_TMR1)

        /* Enable/Disable Timer */
        .globl  FUNC(sysEnable_TMR0)
        .globl  FUNC(sysEnable_TMR1)

        .globl  FUNC(sysDisable_TMR0)
        .globl  FUNC(sysDisable_TMR1)

        /* Enable/Disable Timer Auto Reload */
        .globl  FUNC(sysEnable_Reload_TMR0)
        .globl  FUNC(sysEnable_Reload_TMR1)

        .globl  FUNC(sysDisable_Reload_TMR0)
        .globl  FUNC(sysDisable_Reload_TMR1)

        /* Enable/Disable Timer Privileged Write Control for User Mode */
        .globl  FUNC(sysEnable_PU_Mode_TMR0)
        .globl  FUNC(sysEnable_PU_Mode_TMR1)

        .globl  FUNC(sysDisable_U_Mode_TMR0)
        .globl  FUNC(sysDisable_U_Mode_TMR1)

        /* Read Timer Terminal Count Status */
        .globl  FUNC(sysRead_TCS_TMR0)
        .globl  FUNC(sysRead_TCS_TMR1)

        /* Read/Write Timer Input Clock Select */
        .globl  FUNC(sysRead_CSel_TMR0)
        .globl  FUNC(sysRead_CSel_TMR1)

        .globl  FUNC(sysWrite_CSel_TMR0)
        .globl  FUNC(sysWrite_CSel_TMR1)

        /* Read/Write Timer Count Registers */
        .globl  FUNC(sysRead_TCR0)
        .globl  FUNC(sysRead_TCR1)

        .globl  FUNC(sysWrite_TCR0)
        .globl  FUNC(sysWrite_TCR1)

        /* Read/Write Timer Reload Registers */
        .globl  FUNC(sysRead_TRR0)
        .globl  FUNC(sysRead_TRR1)

        .globl  FUNC(sysWrite_TRR0)
        .globl  FUNC(sysWrite_TRR1)

        /* Read/Clear Timer Interrupt Status Registers */
        .globl  FUNC(sysRead_TISR0)
        .globl  FUNC(sysRead_TISR1)

        .globl  FUNC(sysClear_TISR0)
        .globl  FUNC(sysClear_TISR1)

        /* Enable/Read Watch Dog Timer */
        .globl  FUNC(sysEnable_WDTCR)
        .globl  FUNC(sysRead_WDTCR)

	.text
	.align 4

/*****************************************************************************
* sysRead_TMR0 - Read Timer 0 Mode Register.
*
* RETURNS:       UINT32 containing the current TMR0 settings.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TMR0)

        /* Read Timer 0 Mode Register */
        /* clear reserved bits        */
        mov     pc, lr

/*****************************************************************************
* sysRead_TMR1 - Read Timer 1 Mode Register.
*
* RETURNS:       UINT32 containing the current TMR1 settings.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TMR1)

        /* Read Timer 1 Mode Register */
        /* clear reserved bits        */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TMR0 - Write Timer 0 Mode Register.
*
* R0:            UINT32 containing the current TMR0 settings.
*
* RETURNS:                                                   
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TMR0)

        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TMR1 - Write Timer 1 Mode Register.
*
* R0:            UINT32 containing the current TMR1 settings.
*
* RETURNS:                                                   
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TMR1)

        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_TMR0 - Enable Timer 0.
*
* RETURNS: 
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Enable Bit              */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_TMR1 - Enable Timer 1.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Enable Bit              */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_TMR0 - Disable Timer 0.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Disable Bit             */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_TMR1 - Disable Timer 1.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Disable Bit             */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_Reload_TMR0 - Enable Timer 0 Auto Reload.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_Reload_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Enable Auto Reload Bit  */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_Reload_TMR1 - Enable Timer 1 Auto Reload.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_Reload_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Enable Auto Reload Bit  */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_Reload_TMR0 - Disable Timer 0 Auto Reload.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_Reload_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Disable Auto Reload Bit */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_Reload_TMR1 - Disable Timer 1 Auto Reload.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_Reload_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Disable Auto Reload Bit */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_PU_Mode_TMR0 - Privileged and User Mode Write Enable for Timer 0.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_PU_Mode_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Privileged Write Control Bit  */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_PU_Mode_TMR1 - Privileged and User Mode Write Enable for Timer 1.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_PU_Mode_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Privileged Write Control Bit  */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_U_Mode_TMR0 - Disable User Mode Write Enable for Timer 0.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_U_Mode_TMR0)

        /* Read Timer 0 Mode Register  */
        /* Set Privileged Write Control Bit */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysDisable_U_Mode_TMR1 - Disable User Mode Write Enable for Timer 1.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysDisable_U_Mode_TMR1)

        /* Read Timer 1 Mode Register  */
        /* Set Privileged Write Control Bit */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TCS_TMR0 - Read Timer 0 Terminal Count Status.
*
* RETURNS:       UINT32 containing the current TMR0 Terminal Count Status.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TCS_TMR0)

        /* Read Timer 0 Mode Register */
        /* clear all but TC bits      */
        mov     pc, lr

/*****************************************************************************
* sysRead_TCS_TMR1 - Read Timer 1 Terminal Count Status.
*
* RETURNS:       UINT32 containing the current TMR1 Terminal Count Status.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TCS_TMR1)

        /* Read Timer 1 Mode Register */
        /* clear all but TC bits      */
        mov     pc, lr

/*****************************************************************************
* sysRead_CSel_TMR0 - Read Timer 0 Input Clock Select.
*
* RETURNS:       UINT32 containing the current TMR0 Input Clock Select.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_CSel_TMR0)

        /* Read Timer 0 Mode Register */
        /* clear all but Clock Select */
        mov     pc, lr

/*****************************************************************************
* sysRead_CSel_TMR1 - Read Timer 1 Input Clock Select.
*
* RETURNS:       UINT32 containing the current TMR1 Input Clock Select.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_CSel_TMR1)

        /* Read Timer 1 Mode Register */
        /* clear all but Clock Select */
        mov     pc, lr

/*****************************************************************************
* sysWrite_CSel_TMR0 - Write Timer 0 Input Clock Select.
*
* R0:            UINT32 containing the current TMR0 Input Clock Select.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_CSel_TMR0)

        /* Read Timer 0 Mode Register */
        /* mask out clock select bits */
        /* Set Input Clock Select Bits */
        /* Write Timer 0 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_CSel_TMR1 - Write Timer 1 Input Clock Select.
*
* R0:            UINT32 containing the current TMR1 Input Clock Select.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_CSel_TMR1)

        /* Read Timer 1 Mode Register */
        /* mask out clock select bits */
        /* Set Input Clock Select Bits */
        /* Write Timer 1 Mode Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TCR0 - Read Timer 0 Count Register.
*
* RETURNS:       UINT32 containing the current TCR0 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TCR0)

        /* Read Timer 0 Count Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TCR1 - Read Timer 1Count Register.
*
* RETURNS:       UINT32 containing the current TCR1 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TCR1)

        /* Read Timer 1 Count Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TCR0 - Write Timer 0 Count Register.
*
* R0:            UINT32 containing the current TCR0 setting.
*
* RETURNS:                 
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TCR0)

        /* Write Timer 0 Count Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TCR1 - Write Timer 1 Count Register.
*
* R0:            UINT32 containing the current TCR1 setting.
*
* RETURNS:                 
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TCR1)

        /* Write Timer 1 Count Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TRR0 - Read Timer 0 Reload Register.
*
* RETURNS:       UINT32 containing the current TRR0 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TRR0)

        /* Read Timer 0 Reload Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TRR1 - Read Timer 1 Reload Register.
*
* RETURNS:       UINT32 containing the current TRR1 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TRR1)

        /* Read Timer 1 Reload Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TRR0 - Write Timer 0 Reload Register.
*
* R0:            UINT32 containing the current TRR0 setting.
*
* RETURNS:                
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TRR0)

        /* Write Timer 0 Reload Register */
        mov     pc, lr

/*****************************************************************************
* sysWrite_TRR1 - Write Timer 1 Reload Register.
*
* R0:            UINT32 containing the current TRR1 setting.
*
* RETURNS:                
*/

_ARM_FUNCTION_CALLED_FROM_C(sysWrite_TRR1)

        /* Write Timer 1 Reload Register */
        mov     pc, lr

/*****************************************************************************
* sysRead_TISR0 - Read Timer 0 Interrupt Status Register.
*
* RETURNS:       UINT32 containing the current TISR0 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TISR0)

        /* Read Timer 0 Interrupt Status Register */
        /* clear all but Timer 0 Interrupt Pending */
        mov     pc, lr

/*****************************************************************************
* sysRead_TISR1 - Read Timer 1 Interrupt Status Register.
*
* RETURNS:       UINT32 containing the current TISR1 setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_TISR1)

        /* Read Timer 1 Interrupt Status Register */
        /* clear all but Timer 1 Interrupt Pending */
        mov     pc, lr

/*****************************************************************************
* sysClear_TISR0 - Clear Timer 0 Interrupt Status Register.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysClear_TISR0)

        /* Clear Timer 0 Interrupt Status Register */
        mov     pc, lr

/*****************************************************************************
* sysClear_TISR1 - Clear Timer 1 Interrupt Status Register.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysClear_TISR1)

        /* Clear Timer 1 Interrupt Status Register */
        mov     pc, lr

/*****************************************************************************
* sysEnable_WDTCR - Enable Watch Dog Timer.
*
* RETURNS:
*/

_ARM_FUNCTION_CALLED_FROM_C(sysEnable_WDTCR)

        /* Write WDT initial sequence */
        /* Write WDT final sequence   */
        mov     pc, lr

/*****************************************************************************
* sysRead_WDTCR - Read Watch Dog Timer Register.
*
* RETURNS:       UINT32 containing the current WDTCR setting.
*/

_ARM_FUNCTION_CALLED_FROM_C(sysRead_WDTCR)

        /* Read Watch Dog Timer Register */
        mov     pc, lr

/***EOF***/