DCR_L2C0_CFG
mtdcr(DCR_L2C0_CFG, L2C_CFG_RDBW | L2C_CFG_L2M | L2C_CFG_SS_256KB);
mtdcr(DCR_L2C0_CFG, L2C_CFG_RDBW | L2C_CFG_L2M | L2C_CFG_SS_256KB |
ibm4xx_460ex_l2_cfg = mfdcr(DCR_L2C0_CFG);