[U-Boot] bootm command in U-boot

Dear all I have a query on bootm command. In the link provided below: http://www.linuxquestions.org/questions/linux-kernel-70/how-kernel-figure-ou...

They have given: bootm command will modify the dts/dtb file's memory section, and pass the memory size into Kernel by dts/dtb file.

please provide me information how dose bootm command is related to dts file.and how to overcome this issue.

manukumar signal-networks