©　2018,　Springer　Science+Business　Media,　LLC,　part　of　Springer　Nature.　In　system-on-chips　(SoCs),　DMA,　as　a　peripheral　module,　plays　an　important　role　in　data　transmission.　However,　the　structure　shrinking　of　SoC　leads　to　its　proneness　to　radiation-induced　soft　errors,　especially　for　DMA.　This　paper　presents　a　fine-grained　software-implemented　fault　tolerance　for　SoC,　named　DCRH,　to　enhance　the　reliability　of　DMA　against　soft　errors.　DCRH　achieves　fine-grained　selective　fault　tolerance,　protecting　DMA　without　interfering　other　modules　of　SoC.　Furthermore,　it　is　transparent　to　the　user　application　because　it　performs　on　driver　layer.　In　this　paper,　we　present　our　fault　source　analysis　for　DMA　based　on　Xilinx　Zynq-7010　SoC　and　the　detailed　design　of　DCRH.　The　method　is　then　applied　to　bare-metal　MicroZed　so　that　a　DCRH-enhanced　DMA　driver　is　developed.　Finally,　SSIFFI　is　engaged　in　the　simulated　DMA　fault　injection　experiments　to　validate　DCRH.　The　experimental　results　prove　that　DCRH　can　achieve　high　fault　coverage　for　DMA,　above　97%,　with　stable　performance.