uboot mmc fat命令

fatload mmc 0:1 80800000 zImage 

reading zImage
4164040 bytes read in 228 ms (17.4 MiB/s)

读文件 读取mmc0 第一个分区的在Image文件到0x80800000

fatwrite mmc 1:1 80800000 zImage 3f89c8 

writing zImage
4164040 bytes written

写文件  从0x8080000 地址开始0x3f89c8字节长度 写入到mmc1的第一个分区，文件名为zImage

 

fatload mmc 0:1 83000000 imx6ull-14x14-emmc-4.3-480x272-c.dtb

reading imx6ull-14x14-emmc-4.3-480x272-c.dtb
33315 bytes read in 19 ms (1.7 MiB/s)

fatwrite mmc 1:1 83000000 imx6ull-14x14-emmc-4.4-480x272-c.dtb 8223

writing imx6ull-14x14-emmc-4.4-480x272-c.dtb
33315 bytes written