[U-Boot] bootm command in U-boot

[Manukumar]

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-out-ddr-ram-size-when-bootargss-mem-not-specified-948165/

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