DRAM_DDR_INFO_MASK
mr5 = response[MSG_ARG0 + 1] & DRAM_DDR_INFO_MASK;
mr6 = response[MSG_ARG0 + 2] & DRAM_DDR_INFO_MASK;
mr7 = response[MSG_ARG0 + 3] & DRAM_DDR_INFO_MASK;
mr8 = response[MSG_ARG0 + 4] & DRAM_DDR_INFO_MASK;
err = response[MSG_ARG0 + 5] & DRAM_DDR_INFO_MASK;