syslib.c

S3C2410的DM9000驱动。在优龙的开发板子上调试成功

    PLLFEED = 0x55;

    /* 设置存储器加速模块 */
    /* Set memory accelerater module*/
    MAMCR = 0;
#if Fcclk < 20000000
    MAMTIM = 1;
#else
#if Fcclk < 40000000
    MAMTIM = 2;
#else
#if Fcclk < 60000000
    MAMTIM = 3;
#else
#if Fcclk < 80000000
    MAMTIM = 4;
#else
#if Fcclk < 100000000
    MAMTIM = 5;
#else
#if Fcclk < 120000000
    MAMTIM = 6;
#else
    MAMTIM = 7;
#endif
#endif
#endif
#endif
#endif
#endif


    /* initialize the interrupt library and interrupt driver */
    intLibInit (LPC2210_INTNUMLEVELS, LPC2210_INTNUMLEVELS, INT_MODE);
    lpc2210IntDevInit();

    /* connect sys clock interrupt and auxiliary clock interrupt */
    (void)intConnect(INT_VEC_TIMER0, sysClkInt, 0);
	/* VICVectCntl0 = (0x20 | 4);
	VICVectAddr0 = (FUNCPTR)sysClkInt;
	VICIntEnable = (1 << 4); */


    /*(void)intConnect(INT_VEC_TIMER1, sysAuxClkInt, 0);*/
    /* (void)intConnect(INT_VEC_EXTINT3, (VOIDFUNCPTR)IRQ_Eint3, 0); */
    
    /* connect serial interrupt */
    sysSerialHwInit2();

#if defined (INCLUDE_USB)
    /* Low level init for usb */

    sysUsbPciInit();

#endif
}

/******************************************************************************
*
* sysPhysMemTop - get the address of the top of physical memory
*
* This routine returns the address of the first missing byte of memory,
* which indicates the top of memory.
*
* Normally, the user specifies the amount of physical memory with the
* macro LOCAL_MEM_SIZE in config.h.  BSPs that support run-time
* memory sizing do so only if the macro LOCAL_MEM_AUTOSIZE is defined.
* If not defined, then LOCAL_MEM_SIZE is assumed to be, and must be, the
* true size of physical memory.
*
* NOTE: Do no adjust LOCAL_MEM_SIZE to reserve memory for application
* use.  See sysMemTop() for more information on reserving memory.
*
* RETURNS: The address of the top of physical memory.
*
* SEE ALSO: sysMemTop()
*/

char * sysPhysMemTop (void)
    {
    static char * physTop = NULL;

    if (physTop == NULL)
        {
#ifdef LOCAL_MEM_AUTOSIZE

        /* If auto-sizing is possible, this would be the spot.  */

#    error   "Dynamic memory sizing not supported"

#else
        /* Don't do autosizing, if size is given */

        physTop = (char *)(LOCAL_MEM_LOCAL_ADRS + LOCAL_MEM_SIZE);

#endif /* LOCAL_MEM_AUTOSIZE */
        }

    return physTop;
    }

/******************************************************************************
*
* sysMemTop - get the address of the top of VxWorks memory
*
* This routine returns a pointer to the first byte of memory not
* controlled or used by VxWorks.
*
* The user can reserve memory space by defining the macro USER_RESERVED_MEM
* in config.h.  This routine returns the address of the reserved memory
* area.  The value of USER_RESERVED_MEM is in bytes.
*
* RETURNS: The address of the top of VxWorks memory.
*/

char * sysMemTop (void)
    {
    static char * memTop = NULL;

    if (memTop == NULL)
        {
        memTop = sysPhysMemTop () - USER_RESERVED_MEM;
        }

    return memTop;
    }

/******************************************************************************
*
* sysToMonitor - transfer control to the ROM monitor
*
* This routine transfers control to the ROM monitor.  It is usually called
* only by reboot() -- which services ^X -- and bus errors at interrupt
* level.  However, in some circumstances, the user may wish to introduce a
* new <startType> to enable special boot ROM facilities.
*
* RETURNS: Does not return.
*/

STATUS sysToMonitor
    (
    int startType    /* passed to ROM to tell it how to boot */
    )
    {
    FUNCPTR     pRom;
    UINT32 *    p = (UINT32 *)ROM_TEXT_ADRS;
#ifdef INCLUDE_SNGKS32C_END
    END_OBJ *   pEnd;
#endif

    /*
     * Examine ROM - if it's a VxWorks boot ROM, jump to the warm boot entry
     * point; otherwise jump to the start of the ROM.
     * A VxWorks boot ROM begins
     *    MOV    R0,#BOOT_COLD
     *    B    ...
     *    DCB    "Copyright"
     * We check the first and third words only. This could be tightened up
     * if required (see romInit.s).
     */

#if (_BYTE_ORDER == _LITTLE_ENDIAN)
    if (p[0] == 0xE3A00002 && p[2] == 0x79706F43)
        pRom = (FUNCPTR)(ROM_TEXT_ADRS + 4);    /* warm boot address */
    else
        pRom = (FUNCPTR)ROM_TEXT_ADRS;        /* start of ROM */
#else /* (_BYTE_ORDER == _LITTLE_ENDIAN) */
    if (p[0] == 0xE3A00002 && p[2] == 0x436F7079)
        pRom = (FUNCPTR)(ROM_TEXT_ADRS + 4);    /* warm boot address */
    else
        pRom = (FUNCPTR)ROM_TEXT_ADRS;        /* start of ROM */
#endif /* (_BYTE_ORDER == _LITTLE_ENDIAN) */

#ifdef INCLUDE_SNGKS32C_END
    /*
     * Reset Ethernet controller to prevent it doing anything
     * before jumping to the bootrom.
     */

    pEnd = endFindByName ("sng", 0);

    if (pEnd != NULL)
        pEnd->pFuncTable->stop(pEnd->devObject.pDevice);
#endif /* INCLUDE_SNGKS32C_END */

    (*pRom)(startType);    /* jump to bootrom */

    return OK;        /* in case we ever continue from ROM monitor */
    }

/****************************************************************************
*
* sysProcNumGet - get the processor number
*
* This routine returns the processor number for the CPU board, which is
* set with sysProcNumSet().
*
* RETURNS: The processor number for the CPU board.
*
* SEE ALSO: sysProcNumSet()
*/

int sysProcNumGet (void)
    {
    return 0;
    }

/****************************************************************************
*
* sysProcNumSet - set the processor number
*
* Set the processor number for the CPU board.  Processor numbers should be
* unique on a single backplane.
*
* NOTE
* By convention, only processor 0 should dual-port its memory.
*
* RETURNS: N/A
*
* SEE ALSO: sysProcNumGet()
*/

void sysProcNumSet
    (
    int procNum        /* processor number */
    )
    {
    sysProcNum = procNum;
    }

#ifdef INCLUDE_FLASH

/* default procedures assume static ram with no special r/w routines */
#ifndef NV_RAM_WR_ENBL
#   define NV_RAM_WR_ENBL    /* no write enable procedure */
#endif /*NV_RAM_WR_ENBL*/

#ifndef NV_RAM_WR_DSBL
#   define NV_RAM_WR_DSBL    /* no write disable procedure */
#endif /*NV_RAM_WR_DSBL*/

#ifndef NV_RAM_READ
#   define NV_RAM_READ(x) \
    (*(UCHAR *)((int)NV_RAM_ADRS + ((x) * NV_RAM_INTRVL)))
#endif /*NV_RAM_READ*/

#ifndef NV_RAM_WRITE
#   define NV_RAM_WRITE(x,y) \
    (*(UCHAR *)((int)NV_RAM_ADRS + ((x) * NV_RAM_INTRVL)) = (y))
#endif /*NV_RAM_WRITE*/
    
/******************************************************************************
*
* sysNvRamGet - get the contents of non-volatile RAM
*
* This routine copies the contents of non-volatile memory into a specified
* string.  The string is terminated with an EOS.
*
* RETURNS: OK, or ERROR if access is outside the non-volatile RAM range.
*
* SEE ALSO: sysNvRamSet()
*/

STATUS sysNvRamGet
    (
    char *string,    /* where to copy non-volatile RAM    */
    int   strLen,      /* maximum number of bytes to copy   */
    int   offset       /* byte offset into non-volatile RAM */
    )

    {
    STATUS retVal;

    offset += NV_BOOT_OFFSET;   /* boot line begins at <offset> = 0 */

    if ((offset < 0)
     || (strLen < 0)
     || ((offset + strLen) > NV_RAM_SIZE))
        return (ERROR);

    retVal = sysFlashGet (string, strLen, offset);
    string [strLen] = EOS;

    return (OK);
    }

/******************************************************************************
*
* sysNvRamSet - write to non-volatile RAM
*
* This routine copies a specified string into non-volatile RAM.
*
* RETURNS: OK, or ERROR if access is outside the non-volatile RAM range.
*
* SEE ALSO: sysNvRamGet()
*/

STATUS sysNvRamSet
    (
    char *string,     /* string to be copied into non-volatile RAM */
    int strLen,       /* maximum number of bytes to copy           */
    int offset        /* byte offset into non-volatile RAM         */
    )

    {
    offset += NV_BOOT_OFFSET;   /* boot line begins at <offset> = 0 */

    if ((offset < 0)
     || (strLen < 0)
     || ((offset + strLen) > NV_RAM_SIZE))
        return ERROR;

    NV_RAM_WR_ENBL;

    return (sysFlashSet (string, strLen, offset));

    }

/******************************************************************************
*
* sysFlashBoardDelay - create a delay
*
* This routine is used by flashMem.c to produce specified delays. It
* appears that the Flash driver cannot use taskDelay() at certain
* points.
*
* RETURNS: N/A
*/

void sysFlashBoardDelay (void)
    {
    return;
    }
#endif /* INCLUDE_FLASH */

#ifdef DEBUG
/******************************************************************************
*
* sysDebug - print message using polled serial driver
*
* Use the polled driver to print debug messages.  Useful before the full
* hardware initialization is complete (but only after sysHwInit).
*
* RETURNS: N/A.
*
* NOMANUAL
*/

void sysDebug
    (
    char *str
    )
    {
    int msgSize;
    int msgIx;
    LOCAL SIO_CHAN * pSioChan;        /* serial I/O channel */
    LOCAL BOOL beenHere = FALSE;

    msgSize = strlen (str);

    if (!beenHere)
        {
        sysSerialHwInit ();

        pSioChan = sysSerialChanGet (0);

        sioIoctl (pSioChan, SIO_BAUD_SET, (void *)CONSOLE_BAUD_RATE);

        sioIoctl (pSioChan, SIO_MODE_SET, (void *) SIO_MODE_POLL);

        beenHere = TRUE;
	}

    for (msgIx = 0; msgIx < msgSize; msgIx++)
        {
        while (sioPollOutput (pSioChan, str[msgIx]) == EAGAIN)
            /* do nothing */;
        }
    }
#endif /* DEBUG */