Dear Bo Shen,
In message 1336036915-6422-1-git-send-email-voice.shen@gmail.com you wrote:
when using dhcp command with parameters as usage message, if DHCP server response contains bootfilename, it will overwrite the dhcp command parameters. So the dhcp command parameters can not be used.
This behaviour is not a bug, it is intentional. If the DHCP server returns any network configuration parameters, thise shall take precedence over any user-defined (default-) settings.
If you want to ignore the boot filename returned by the DHCP server, you can do so: set autoload to no, use DHCP to get the (rest of) the network configuration, and then use tftp to download the boot file of your choice. Similar for any other network parameters returned by the DHCP server.
We had a similar discussion not so long ago; please see here for reference: http://thread.gmane.org/gmane.comp.boot-loaders.u-boot/129689/focus=129987
Thanks for your patch, but we will not apply it, as the current behaviour is correct (or at least as intended).
Best regards,
Wolfgang Denk