oemwake.c

此压缩包为杰得开发得z228的BSP的源代码,可以实现很多功能,尤其是视频解码有很好的效果.

/*
*   The content of this file or document is CONFIDENTIAL and PROPRIETARY
*   to Jade Technologies Co., Ltd.  It is subjected to the terms of a
*   License Agreement between Licensee and Jade Technologies Co., Ltd.
*   restricting among other things, the use, reproduction, distribution
*   and transfer.  Each of the embodiments, including this information 
*   and any derivative work shall retain this copyright notice.
* 
*   Copyright (c) 2004 - 2005 Jade Technologies Co., Ltd. 
*   All rights reserved.
 * ----------------------------------------------------------------
 * File:     oemwake.c,v
 * Revision: 1.
 * ----------------------------------------------------------------
 * $
 */

//
// Power off/Suspend routines
//

#include <windows.h>
#include <nkintr.h>
#include <oalintr.h>
#include <oemwake.h>
#include <bldver.h>
#include <platform.h>
#include <board.h>
#include <pl190.h>
#include <oalfuncs.h>
//#include <apcharlcd.h>
#include <dma.h>
#include "dmakern.h"

extern CRITICAL_SECTION csWakeIntMask;

// What devices can wake us up - sysintr array and a physical IRQ enable mask
static BYTE fInterruptWakeupMask[SYSINTR_MAXIMUM];

// What device actually woke us up
static BYTE fInterruptWakeup[SYSINTR_MAXIMUM];

static DWORD dwLastWakeupSource = SYSWAKE_UNKNOWN;

DWORD OEMPowerManagerInit(void)
{
    memset(fInterruptWakeup,0,SYSINTR_MAXIMUM);
    memset(fInterruptWakeupMask,0,SYSINTR_MAXIMUM);

    // Setting of any default wakeup devices (e.g. Keyboard and mouse) should be done 
    //  via their relevent drivers using the IOCTL_HAL_ENABLE_WAKE kernel message. 
    // If this is not possible, then default set-up could be done here, but do not use
    //  the OEMSetWakeupSource() function as the critical section is not yet 
    //  initialised.
    
    return 0;
}

DWORD OEMSetWakeupSource(DWORD dwSysIntr)
{
    DWORD physInt = OEMTranslateSysIntr(dwSysIntr);

    if (physInt != LOGINTR_UNDEFINED) {
        EnterCriticalSection(&csWakeIntMask);
        fInterruptWakeupMask[dwSysIntr] = 1;
        LeaveCriticalSection(&csWakeIntMask);
        return 1;
    }

    return 0;
}

DWORD OEMResetWakeupSource(DWORD dwSysIntr)
{
    DWORD physInt = OEMTranslateSysIntr(dwSysIntr);

    if (physInt != LOGINTR_UNDEFINED) {
        EnterCriticalSection(&csWakeIntMask);
        fInterruptWakeupMask[dwSysIntr] = 0;
        LeaveCriticalSection(&csWakeIntMask);
        return 1;
    }

    return 0;
}

void OEMIndicateIntSource(DWORD dwSysIntr)
{
    if (dwSysIntr < SYSINTR_MAXIMUM )
    {
        fInterruptWakeup[dwSysIntr] = 1;
    }
}

DWORD OEMGetWakeupSource(void)
{
    return dwLastWakeupSource;
}

DWORD OEMFindFirstWakeSource()
{
    DWORD dwCount;
    DWORD dwWake = SYSWAKE_UNKNOWN;

    for (dwCount = 0; dwCount < SYSINTR_MAXIMUM; dwCount++)
    {
        if (fInterruptWakeup[dwCount] && fInterruptWakeupMask[dwCount])
        {
            dwWake = dwCount;
            break;
        }
    }

    return dwWake;
}

void OEMClearIntSources()
{
    memset(fInterruptWakeup,0,SYSINTR_MAXIMUM);
}


VOID OEMPowerOff(void)
{
#if 0//为防止软关机之前，该函数把所有中断关闭，故屏蔽 qzsu 2006-11-4
    volatile DWORD ulOldIntMask = 0;
    pvstVICRegs pVic = (pvstVICRegs)VA_VIC_BASE;
    DWORD irq, dwWake;

    /* Disable interrupts at the core */
    INTERRUPTS_OFF();
    
    /* Save current interrupt mask. */
    ulOldIntMask = pVic->IntEnable;

    /* Clear ALL enabled interrupts */
    pVic->IntEnClear = 0xffffffff;

    /* Clear any pending interrupts that may be around in the vector address 
     *  register. Actual values are unimportant, the read/write actions clears 
     *  the next pending interrupt 
     */
    for (irq = 0; irq < VIC_NUM_VECTIRQ_LINES; irq++)
    {
        pVic->VectAddr = pVic->VectAddr + 1;
    }
    
    /* We read/write once more to cover any non-vectored interrupts */
    pVic->VectAddr = pVic->VectAddr + 1;

    /* Wake on an RTC event and anything in the wake event mask 
     * NOTE: We use pHALir_EnableIrq() as the IRQ mappings need translating
     *  but if an invalid Irq is set a debug message will be produced
     *  possibly hanging this power down code.
     */
    pHALir_EnableIrq( LOGINTR_RTC );
    for( irq = 0; irq < SYSINTR_MAXIMUM; irq++ )
    {
        if( fInterruptWakeupMask[irq] )
        {
            pHALir_EnableIrq( OEMTranslateSysIntr(irq) );
        }
    }

  //  apCHARLCD_PrintXY( 0, 0, "-Standby-" );

    do
    {       
        /* Enable interrupts at the core */
        INTERRUPTS_ON();

#ifdef EXAMPLE_POWERDOWN
        /* Branch to assembly-based code in fw_utils.s */
        ARM_PowerOff(); 
#else
        /* Currently just enter idle until interrupt */
        CPUEnterIdle(0);
#endif        

        /* Disable interrupts at the core */
        INTERRUPTS_OFF();

        dwWake = OEMFindFirstWakeSource();
        
    } while( dwWake == SYSWAKE_UNKNOWN );

    dwLastWakeupSource = dwWake;

 //   apCHARLCD_PrintXY( 0, 0, "         " );
    
    /* Clear ALL enabled interrupts */
    pVic->IntEnClear = 0xffffffff;

    /*/ Restore the original interupt mask. */
    pVic->IntEnable = ulOldIntMask;

    /* Enable interrupts at the core */ 
    INTERRUPTS_ON();
    
#endif    
}