DCR_SDRAM0_CFGDATA
val = mfdcr(DCR_SDRAM0_CFGDATA);
esr = mfdcr(DCR_SDRAM0_CFGDATA);
ear = mfdcr(DCR_SDRAM0_CFGDATA);
mtdcr(DCR_SDRAM0_CFGDATA, 0xffffffff);
esr = mfdcr(DCR_SDRAM0_CFGDATA);
mtdcr(DCR_SDRAM0_CFGDATA, 0xffffffff);
esr = mfdcr(DCR_SDRAM0_CFGDATA);