ebiemisc.c

这是单板上DPRAM的驱动程序

#include <psos.h>
#include "board.h"
#include "sdev.h"
#include "ebiemisc.h"

static void BieMiscInit(void *pDataBuf, BieMiscCfgStruct *cfg )
{
    BieMiscCfgStruct*   pCfg =(BieMiscCfgStruct *)(pDataBuf);
    memmove(pCfg,cfg,sizeof(*cfg));
}

static int BieMiscCntrl(void *pDataBuf, int cmd, void *pParam, int maxlen)
{
    int ret;
    BieMiscCfgStruct*  pCfg =(BieMiscCfgStruct *)(pDataBuf);
    switch(cmd)
    {
        case SDC_REINIT:
            BieMiscInit(pDataBuf,pCfg);
            break;

        default: 
            return SDE_UNKNOW_CMD;

    }/* end of switch(cmd) */
    return SDE_OK;
}

char *BieMiscBspInit(int DEV, char *FreeMemPtr, BieMiscCfgStruct *cfg)
{
    InstallSD(DEV,NULL,NULL,BieMiscCntrl,FreeMemPtr);
    BieMiscInit(FreeMemPtr, cfg); 
    FreeMemPtr += sizeof(BieMiscCfgStruct);
    memcpy(FreeMemPtr,"*BieMisc",8);
    FreeMemPtr += 8;
    return FreeMemPtr;
}