sysmotcpmend.c

MPC850的bootrom。使用后可以直接启动boot程序

/* sysMotCpmEnd.c - system configuration module for motCpmEnd driver */
 
/* Copyright 1984-1999 Wind River Systems, Inc. */
#include "copyright_wrs.h"
 
/*
modification history
--------------------
01a,18mar99, cn  created from pc386/sysEl3c90xEnd.c (SPR# 25839).
*/
 
/*
DESCRIPTION
This is the WRS-supplied configuration module for the VxWorks
motCpmEnd END driver.

It performs the dynamic parameterization of the motCpmEnd driver.
This technique of 'just-in-time' parameterization allows driver
parameter values to be declared as any other defined constants rather
than as static strings.
*/

#include "vxWorks.h"
#include "config.h"
 
#include "vmLib.h"
#include "stdio.h"
#include "sysLib.h"
#include "logLib.h"
#include "stdlib.h"
#include "string.h"
#include "end.h"
#include "intLib.h"
 
#include "drv/end/motCpmEnd.h"

/* defines */

#ifdef INCLUDE_CPM

#define CPM_TBD_NUM	0x10	/* number of transmit buffer descriptors (TBD)*/
#define CPM_RBD_NUM	0x10	/* number of receive buffer descriptors (RBD)*/
/*#define CPM_TBD_BASE	0x2000*/	/* offset in DPRAM of TBD table */
/*#define CPM_RBD_BASE	0x2100*/	/* offset in DPRAM of RBD table */
#define CPM_TBD_BASE	0x3000	/* offset in DPRAM of TBD table */
#define CPM_RBD_BASE	0x3100	/* offset in DPRAM of RBD table */

/* imports */
 
IMPORT END_OBJ *	motCpmEndLoad (char *);

/******************************************************************************
*
* sysMotCpmEndLoad - load an istance of the motCpmEnd driver
*
* This routine loads the motCpmEnd driver with proper parameters. 
*
* The END device load string formed by this routine is in the following
* format.
* <motCpmAddr>:<ivec>:<sccNum>:<txBdNum>:<rxBdNum>:<txBdBase>:<rxBdBase>:
* <bufBase>
*
* .IP <motCpmAddr>
* Internal memory address
* .IP <ivec>
* Interrupt vector 
* .IP <sccNum>
* SCC number being used
* .IP <txBdNum>
* number of TBDs or NULL
* .IP <rxBdNum>
* number of RBDs or NULL
* .IP <txBdBase>
* base location of the TBDs
* .IP <rxBdBase>
* base location of the RBDs
* .IP <bufBase>
* address of the shared memory region
*
* This routine only loads and initializes one instance of the device.
* If the user wishes to use more than one motCpmEnd devices, this routine
* should be changed.
*
* RETURNS: pointer to END object or ERROR.
*
* SEE ALSO: motCpmEndLoad ()
*/
 
END_OBJ * sysMotCpmEndLoad
    (
    char * pParamStr,   /* ptr to initialization parameter string */
    void * unused       /* unused optional argument */
    )
    {
    /*
     * The motCpmEnd driver END_LOAD_STRING should be:
     * <motCpmAddr>:<ivec>:<sccNum>:<txBdNum>:<rxBdNum>:<txBdBase>:
     * <rxBdBase>:<bufBase>
     * Note that unit string is prepended by the mux, so we
     * don't put it here.
     */

    char * pStr = NULL;
    char paramStr [200];
    UINT8 sccNum;
    int intVec;
    static char motCpmEndParamTemplate [] = 
			"0x%x:0x%x:%d:0x%x:0x%x:0x%x:0x%x:-1";
    END_OBJ * pEnd;
            
    if (strlen (pParamStr) == 0)
        {
        /*
         * muxDevLoad() calls us twice.  If the string is
         * zero length, then this is the first time through
         * this routine.
         */
 
        pEnd = (END_OBJ *) motCpmEndLoad  (pParamStr);
         }
    else
        {
        /*
         * On the second pass through here, we actually create
         * the initialization parameter string on the fly.
         * Note that we will be handed our unit number on the
         * second pass and we need to preserve that information.
         * So we use the unit number handed from the input string.
         */
 
        pStr = strcpy (paramStr, pParamStr);
 
        /* Now, we get to the end of the string */ 
        pStr += strlen (paramStr);
 
	/* If running an 823 or an 850, use SCC2 */
#ifdef MPC850_BSP
	       intVec = (int) IV_SCC2;
	       sccNum = 2;
#else
	       intVec = (int) IV_SCC1;
	       sccNum = 1;
#endif
 
        /* finish off the initialization parameter string */
        sprintf(pStr, motCpmEndParamTemplate,
		                     (UINT) vxImmrGet (),
		                     intVec,
		                     sccNum,
		                     CPM_TBD_NUM,  	
		                     CPM_RBD_NUM,  	
		                     CPM_TBD_BASE,  	
		                     CPM_RBD_BASE  	
		              );
 
        if ((pEnd = (END_OBJ *) motCpmEndLoad  (paramStr)) == (END_OBJ *)ERROR)
            {
            logMsg ("Error: motCpmEndLoad  failed to load driver\n",
		                                                    0, 0, 0, 0, 0, 0);
            }
        }
 
    return (pEnd);
    }
#endif /* INCLUDE_CPM */