bootconfig.c

MPC8241:本程序是freescale的824*系列的BSP源程序

    if ((bootString != NULL) && (*bootString != EOS))
	strcpy (BOOT_LINE_ADRS, bootString);

    /* interpret boot command */

    if (usrBootLineCrack (BOOT_LINE_ADRS, &params) != OK)
	return (ERROR);

    /* Display boot parameters */

    bootParamsShow (BOOT_LINE_ADRS);

    /* set our processor number: may establish vme access, etc. */

    sysFlags = params.flags;
    sysProcNumSet (params.procNum);

#ifdef	INCLUDE_SCSI_BOOT

    /*
     * initialize either the SCSI1 or SCSI2 interface; initialize SCSI2 when
     * the SCSI2 interface is available.
     */

#ifndef INCLUDE_SCSI2
    scsi1IfInit ();
#else
    scsi2IfInit ();
#endif

    if (strncmp (params.bootDev, "scsi", 4) == 0)
	{
	int bootDevId = NONE;
	int bootDevLUN = NONE;

#ifdef INCLUDE_SCSI2
        /* Set all devices to asynchronous data transfer */

        which = SCSI_SET_OPT_XFER_PARAMS;
        options.maxOffset = 0;
        options.minPeriod = SCSI_SYNC_XFER_MIN_PERIOD;

        for (devBusId = 0; devBusId < 8; devBusId++)
            {
            scsiTargetOptionsSet (pSysScsiCtrl, devBusId, &options, which);
            }
#endif /* INCLUDE_SCSI2 */

	/* check for absence of bus ID and LUN, in which case
	 * auto-configure and display results
	 */

	if (strlen (params.bootDev) == 4)
	    {
	    if (!scsiInitialized)
		{
	    	if (sysScsiInit () == ERROR)
		    {
		    printErr ("Could not initialize SCSI.\n");
		    return (ERROR);
		    }
		scsiInitialized = TRUE;
		}

	    scsiAutoConfig (pSysScsiCtrl);
	    scsiShow (pSysScsiCtrl);

	    /* return ERROR to indicate that no file was loaded */
	    return (ERROR);
	    }

	sscanf (params.bootDev, "%*4s%*c%d%*c%d", &bootDevId, &bootDevLUN);

	if (scsiLoad (bootDevId, bootDevLUN, params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif	/* INCLUDE_SCSI_BOOT */

#ifdef  INCLUDE_FD

    if (strncmp (params.bootDev, "fd", 2) == 0)
	{
	int type = 0;
	int drive = 0;

	if (strlen (params.bootDev) == 2)
	    return (ERROR);
	else
	    sscanf (params.bootDev, "%*2s%*c%d%*c%d", &drive, &type);

	if (fdLoad (drive, type, params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif  /* INCLUDE_FD */

#ifdef	INCLUDE_IDE

    if (strncmp (params.bootDev, "ide", 3) == 0)
	{
	int type = 0;
	int drive = 0;

	if (strlen (params.bootDev) == 3)
	    return (ERROR);
	else
	    sscanf (params.bootDev, "%*3s%*c%d%*c%d", &drive, &type);

	if (ideLoad (drive, type, params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif	/* INCLUDE_IDE */

#ifdef	INCLUDE_ATA

    if (strncmp (params.bootDev, "ata", 3) == 0)
	{
	int ctrl  = 0;
	int drive = 0;

	if (strlen (params.bootDev) == 3)
	    return (ERROR);
	else
	    sscanf (params.bootDev, "%*3s%*c%d%*c%d", &ctrl, &drive);

	if (ataLoad (ctrl, drive, params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif	/* INCLUDE_ATA */

#ifdef	INCLUDE_PCMCIA

    pcmciaInit ();			/* init PCMCIA Lib */

    if (strncmp (params.bootDev, "pcmcia", 6) == 0)
	{
	int sock	= NONE;

	if (strlen (params.bootDev) == 6)
	    return (ERROR);
	else
	    sscanf (params.bootDev, "%*6s%*c%d", &sock);

	if (pcmciaLoad (sock, params.bootFile, pEntry) == OK)
	    return (OK);

	/* fall through if the PC card is not a block device.
	 * let's try to boot it from an ethernet device.
	 */
	}

#endif	/* INCLUDE_PCMCIA */

#ifdef  INCLUDE_TFFS

    if (strncmp (params.bootDev, "tffs", 4) == 0)
	{
	int drive = 0;
	int removable = 0;

	if (strlen (params.bootDev) == 4)
	    return (ERROR);
	else
	    sscanf (params.bootDev, "%*4s%*c%d%*c%d", &drive, &removable);

	/* tffsLoad () should be after pcmciaInit () */

	if (tffsLoad (drive, removable, params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif  /* INCLUDE_TFFS */

#ifdef  INCLUDE_TSFS_BOOT

    if (strncmp (params.bootDev, "tsfs", 4) == 0)
	{
	if (tsfsLoad (params.bootFile, pEntry) != OK)
	    {
	    printErr ("\nError loading file: errno = 0x%x.\n", errno);
	    return (ERROR);
	    }

	return (OK);
	}

#endif  /* INCLUDE_TSFS_BOOT */

#ifndef  INCLUDE_NETWORK

    printf ("\nError loading file: networking code not present.\n");
    return (ERROR);
    }

#else  /* INCLUDE_NETWORK */

    /* start the network */

    /* initialize the generic socket library */

    if (sockLibInit (NUM_FILES) == ERROR)
        return (ERROR);

#if defined(INCLUDE_STREAMS) || defined(INCLUDE_STREAMS_ALL)
    if (usrStrmInit() == ERROR)         /* init Streams subsystem */
        return (ERROR);
#endif   

#if defined(INCLUDE_BSD) || defined(INCLUDE_BSD_SOCKET)
    /* add the BSD socket library interface */

    if (sockLibAdd ((FUNCPTR) bsdSockLibInit, AF_INET_BSD, AF_INET) == ERROR)
        return (ERROR);
    if (sockLibAdd ((FUNCPTR) bsdSockLibInit, AF_ROUTE, AF_ROUTE) == ERROR)
        return (ERROR);
#endif  /* INCLUDE_BSD || INCLUDE_BSD_SOCKET */

    /* install default socket library interface */

#ifndef DEFAULT_STREAMS_SOCKET
    if (sockLibAdd ((FUNCPTR) bsdSockLibInit, AF_INET, AF_INET) == ERROR)
        return (ERROR);
#endif  /* DEFAULT_STREAMS_SOCKET */
 
    hostTblInit ();		/* initialize host table */
    usrNetProtoInit ();         /* initialize various protocols */
    netLibInit ();

#ifdef	INCLUDE_PPP
#ifdef	INCLUDE_PPP_CRYPT 
    cryptRtnInit (&pppCryptRtn);	/* install crypt() routine */ 
#endif	/* INCLUDE_PPP_CRYPT */
#endif	/* INCLUDE_PPP */

    /* attach and configure boot interface */

    if (strncmp (params.bootDev, "ppp", 3) == 0)
        {
        /* booting via ppp */

        if (usrPPPInit (params.bootDev, params.unitNum, params.ead, 
                        ((params.gad[0] == EOS)? params.had : params.gad)) 
                        == ERROR)
            return (ERROR);
        }
    else if (strncmp (params.bootDev, "sl", 2) == 0)
	{
  	if (usrSlipInit (params.bootDev, params.unitNum, params.ead, 
                         ((params.gad[0] == EOS)? params.had : params.gad)) 
                         == ERROR)
	    return (ERROR);
        }
    else
	{
        strncpy (bootDev, params.bootDev, sizeof (bootDev));

	if ((strncmp (params.bootDev, "bp", 2) != 0) &&
            (strncmp (params.bootDev, "sm", 2) != 0))
	    {
	    pBootAddr = params.ead;
	    backplaneBoot = FALSE;
	    }
        else
	    {
	    if (sysProcNumGet () == 0)
		{
                printf (
                  "Error: processor number must be non-zero to boot from bp\n");
	        return (ERROR);
                }

	    if (usrBpInit (bootDev, params.unitNum, 0) == ERROR)
		return (ERROR);

	    pBootAddr = params.bad;
	    backplaneBoot = TRUE;
	    }

        /* Save requested lease length, if any. Ignore lease origin value. */

        result = bootLeaseExtract (pBootAddr, &leaseLen, NULL);
        if (result < 0)
            {
            printf ("Error reading target address information.\n");
            return (ERROR);
            }

        /* Handle any lease information attached to the address entry. */

        if (result == 2)
            {
            /* 
             * The current address contains both a duration value and a start
             * time, indicating that it was assigned by a DHCP server.
             */

            if (leaseLen != (ULONG)~0)
                {
                /* Handle a finite address assignment. */

                if (sysFlags & SYSFLG_AUTOCONFIG)
                    *pBootAddr = EOS;    /* Remove for later replacement. */
                else
                    {
                    /* 
                     * Technically, this address is invalid since it contains
                     * a finite interval that requires DHCP for verification
                     * and the automatic configuration flag is not set.
                     * However, this situation can only occur if caused 
                     * deliberately by the user. So, just ignore the timing
                     * information and assign the address permanently.
                     */

                    result = 0;    /* Prevents restoration of time values. */
                    }
                }
            }

#ifdef INCLUDE_DHCPC
        /* Set the DHCP lease information, if needed. */

        if (sysFlags & SYSFLG_AUTOCONFIG)
            {
            /* Save the requested lease length if entered by the user. */

            if (result == 1)
                dhcpLease.lease_duration = leaseLen;
            else
                {
                /* 
                 * The lease length is either not present or left over from
                 * an earlier lease. Use the default value.
                 */

                dhcpLease.lease_duration = DHCPC_DEFAULT_LEASE;
                }
            dhcpLease.lease_origin = 0;
            }
#endif  /* INCLUDE_DHCPC */

        netmask = 0;
        bootNetmaskExtract (pBootAddr, &netmask);

	/* start of network attachment code block */

#ifdef INCLUDE_END

	/* Try an END device first */

	pEnd = endFindByName (bootDev, params.unitNum);

	if (!attached && (pEnd != NULL))
	    {
            if (muxDevStart (pEnd) != OK)
                {
                printf("Failed to start device %s\n", bootDev);
                return (ERROR);
                }

	    if (muxIoctl (pEnd, EIOCGMIB2, (char *)&endM2Tbl)
		    == ERROR)
		return (ERROR);

	    /* Add our default address resolution functions. */

	    muxAddrResFuncAdd (M2_ifType_ethernet_csmacd, 0x800, arpresolve);

	    if (ipAttach (params.unitNum, bootDev) != OK)
		{
		printf ("Failed to attach TCP/IP to device %s", muxDevName);
		return (ERROR);
		}

	    printf ("Attached TCP/IP interface to %s%d.\n", bootDev,
		     params.unitNum);

	    attached = TRUE;
	    }
#endif /*INCLUDE_END*/

#ifdef INCLUDE_BSD

	/* Try a BSD 4.4 device attach sequence */

        if (!attached)
	    {
	    if (usrNetIfAttach (bootDev, params.unitNum, pBootAddr) == OK)
		{
		attached = TRUE;
		}
	    else
		return ERROR;
	    }
            
#endif /* INCLUDE_BSD */

	if (!attached)
	    return ERROR;	/* attachment failed */

        /*
         * Now that any extra parameters following an "=" sign have
         * been removed (e.g.