ron_madrid@sbcglobal.net wrote:
--- On Thu, 7/16/09, Ben Warren biggerbadderben@gmail.com wrote:
From: Ben Warren biggerbadderben@gmail.com Subject: Re: [U-Boot] Initial environment variables To: "Ron Madrid" ron_madrid@sbcglobal.net Cc: u-boot@lists.denx.de, "Mike Frysinger" vapier@gentoo.org Date: Thursday, July 16, 2009, 2:08 PM Ron Madrid wrote:
--- On Thu, 7/16/09, Mike Frysinger vapier@gentoo.org
wrote:
the board maintainer decides the default env
values, not
board users. Ben's comment was probably on
the assumption that you are in the
latter category.
Ah, that could be why. Thankfully I am the
maintainer for the board. So I
am going to assume then that it would be OK for me to
add these variable
settings to my board's include/configs file and submit
a patch for it,
unless I here other objections.
Ron
No, there should be no default net parameters, because you're making likely-bogus assumptions about the network that your board's going to go into. Just because your LAN uses '192.168.0.x' doesn't mean anybody else's does. It's even worse for MAC addresses - what if I buy two of your boards and plug them into the same switch? If the addresses are identical all sorts of bad things can happen. Not to mention that public MAC addresses are assigned (and paid for) and should be guaranteed to be unique. And private (bit 41 set) addresses are used in many different ways. One systems company that I worked at would program these dynamically based on which shelf/slot the board was plugged into. It's best to fail loudly (a printf stating that MAC addresses haven't been programmed) than to silently cause network issues. I could go on and on, but hopefully you get the point.
I do understand your points. I am confused then as to why there are around 100 different board configurations that include these variables.
Ron
Sorry, before my time :) They should be cleaned up.
regards, Ben