sendfile

MIPS处理器的bootloader,龙芯就是用的修改过的PMON2

	Sending a File Using a Terminal Emulator
	Sending a File Using a Terminal Emulator

You must use Motorola S-records when using the
"send File" feature of your Terminal Emulator.
In addition the Monitor's environment variable 'hostport' must be set to 'tty0'. In some situations it might be
necessary to use a flow-control protocol in
order to guarantee that your Host does not send the data faster than
the Target is able to accept it.