systffs.c

vxworks MPC8541 BSP

    )
    {
    }

#ifdef SOCKET_12_VOLTS

/*******************************************************************************
*
* glueVppOn - turns on Vpp (12 Volts)
*
* This routine turns on Vpp (12 Volts). Vpp must be known to be good on exit.
*
* RETURNS: flOK always.
*/

LOCAL FLStatus glueVppOn
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    return (flOK);
    }

/*******************************************************************************
*
* glueVppOff - turns off Vpp (12 Volts)
*
* This routine turns off Vpp (12 Volts).
*
* RETURNS: N/A
*/

LOCAL void glueVppOff
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    }

#endif	/* SOCKET_12_VOLTS */

/*******************************************************************************
*
* glueInitSocket - perform all necessary initializations of the socket
*
* This routine performs all necessary initializations of the socket.
*
* RETURNS: flOK always.
*/

LOCAL FLStatus glueInitSocket
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    vol.cardChanged = FALSE;
    glueSetWindow (&vol);

    return (flOK);
    }

/*******************************************************************************
*
* glueSetWindow - set current window attributes, Base address, size, etc
*
* This routine sets current window hardware attributes: Base address, size,
* speed and bus width.  The requested settings are given in the 'vol.window'
* structure.  If it is not possible to set the window size requested in
* 'vol.window.size', the window size should be set to a larger value,
* if possible. In any case, 'vol.window.size' should contain the
* actual window size (in 4 KB units) on exit.
*
* RETURNS: N/A
*/

LOCAL void glueSetWindow
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    UINT32   devAddr,devSize;
    unsigned int winSize;
    unsigned     volNo = vol.volNo;

    switch (volNo)
        {
        case 0:
	    devAddr = g_tffs_DataBase;
        devSize = g_tffs_DataSize;
            break;
        default:
        devAddr = 0;
        devSize = 0;

            printf("volNo failure!!! volNo = %d\n",volNo);
            break;
        }
 
    /*FLASH_DEV *dev = FLASH_DEV_FS;*/

    /* Physical base as a 4K page */

    vol.window.baseAddress = devAddr >> 12;
    winSize = devSize;
    if (winSize & (winSize - 1))
        {
        winSize = devSize * 2 - 1;
        while (winSize & (winSize - 1))
            winSize &= winSize - 1;
        }

    flSetWindowSize (&vol, winSize >> 12);
    }


/*******************************************************************************
*
* glueSetMappingContext - sets the window mapping register to a card address
*
* This routine sets the window mapping register to a card address.
* The window should be set to the value of 'vol.window.currentPage',
* which is the card address divided by 4 KB. An address over 128MB,
* (page over 32K) specifies an attribute-space address. On entry to this
* routine vol.window.currentPage is the page already mapped into the window.
* (In otherwords the page that was mapped by the last call to this routine.)
*
* The page to map is guaranteed to be on a full window-size boundary.
*
* RETURNS: N/A
*/

LOCAL void glueSetMappingContext
    (
    FLSocket vol,		/* pointer identifying drive */
    unsigned page		/* page to be mapped */
    )
    {
    }

/*******************************************************************************
*
* glueGetAndClearCardChangeIndicator - return the hardware card-change indicator
*
* This routine returns the hardware card-change indicator and clears it if set.
*
* RETURNS: FALSE, or TRUE if the card has been changed
*/

LOCAL FLBoolean glueGetAndClearCardChangeIndicator
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    return (FALSE);
    }

/*******************************************************************************
*
* glueWriteProtected - return the write-protect state of the media
*
* This routine returns the write-protect state of the media
*
* RETURNS: FALSE, or TRUE if the card is write-protected
*/

LOCAL FLBoolean glueWriteProtected
    (
    FLSocket vol		/* pointer identifying drive */
    )
    {
    return (FALSE);
    }
#endif	/* INCLUDE_SOCKET_GLUE */

/*******************************************************************************
*
* flFitInSocketWindow - check whether the flash array fits in the socket window
*
* This routine checks whether the flash array fits in the socket window.
*
* RETURNS: A chip size guaranteed to fit in the socket window.
*/

long int flFitInSocketWindow
    (
    long int chipSize,		/* size of single physical chip in bytes */
    int      interleaving,	/* flash chip interleaving (1,2,4 etc) */
    long int windowSize		/* socket window size in bytes */
    )
    {
    if (chipSize*interleaving > windowSize) /* doesn't fit in socket window */
        {
        int  roundedSizeBits;

        /* fit chip in the socket window */
        chipSize = windowSize / interleaving;

        /* round chip size at powers of 2 */
        for (roundedSizeBits = 0; (0x1L << roundedSizeBits) <= chipSize;
             roundedSizeBits++)
	    ;

        chipSize = (0x1L << (roundedSizeBits - 1));
        }

    return (chipSize);
    }


/*******************************************************************************
*
* flDelayMsecs - wait for specified number of milliseconds
*
* This routine waits for specified number of milliseconds.
*
* RETURNS: N/A
*
* NOMANUAL
*/

void flDelayMsecs
    (
    unsigned milliseconds       /* milliseconds to wait */
    )
    {
    UINT32 ix;
    UINT32 iy = 1;
    UINT32 iz = 2;

    /* it doesn't count time consumed in interrupt level */

    for (ix = 0; ix < milliseconds; ix++)
        for (iz = 1; iz < sysTffsMsecLoopCount; iz++)
	    {
	    tickGet ();			/* dummy */
	    iy = KILL_TIME_FUNC;	/* consume time */
	    }
    }

/*******************************************************************************
*
* flDelayLoop - consume the specified time
*
* This routine consumes the specified time.
*
* RETURNS: N/A
*/

void flDelayLoop
    (
    int  cycles
    )
    {
    while (--cycles)
	;
    }

/*******************************************************************************
*
* sysTffsFormat - format the flash memory above an offset
*
* This routine formats the flash memory.  Because this function defines
* the symbolic constant, HALF_FORMAT, the lower half of the specified flash
* memory is left unformatted.  If the lower half of the flash memory was
* previously formated by TrueFFS, and you are trying to format the upper half,
* you need to erase the lower half of the flash memory before you format the
* upper half.  To do this, you could use:
* .CS
* tffsRawio(0, 3, 0, 8)
* .CE
* The first argument in the tffsRawio() command shown above is the TrueFFS
* drive number, 0.  The second argument, 3, is the function number (also
* known as TFFS_PHYSICAL_ERASE).  The third argument, 0, specifies the unit
* number of the first erase unit you want to erase.  The fourth argument, 8,
* specifies how many erase units you want to erase.
*
* RETURNS: OK, or ERROR if it fails.
*/

STATUS sysTffsFormat (void)
    {
    STATUS status;
    tffsDevFormatParams params  =
	{
      /*lint -e620*/
      {0x80000l, 99, 1, 0x10000l, NULL, {0,0,0,0}, NULL, 2, 0, NULL},
      /*lint +e620*/
      FTL_FORMAT_IF_NEEDED 
    };

    status = tffsDevFormat(0, (int)&params);
    return (status);
    }

#endif /* INCLUDE_TFFS */