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#1 (**permalink**) 01-18-2008, 08:10 AM

Hi,
I am building a kernel for my development board, my colleague left me
a kernel configuration file, and in that I see he has this define
"ip=off" in the command string in together with "root=" define.

From the name I guess he wanted to turned off the network support as
the network hardware on the board has some problem. But I can not find
the exact meaning of this, ip=off.

Google "boot argument" does give me the list of boot arguments, but
interesting enough, there is no such one.

My question is in configuring the kernel and I enable the network
support, will this "ip=off" turn off all network related
functionalities?

I ask this because it seems to me even with "ip=off" there, kernel is
still trying to access the ethernet PHY on the chip.

Thanks.

#2 (**permalink**) 01-18-2008, 08:10 AM

linq936@hotmail.com wrote:
> Hi,
> I am building a kernel for my development board, my colleague left me
> a kernel configuration file, and in that I see he has this define
> "ip=off" in the command string in together with "root=" define.
>
> From the name I guess he wanted to turned off the network support as
> the network hardware on the board has some problem. But I can not find
> the exact meaning of this, ip=off.
>
> Google "boot argument" does give me the list of boot arguments, but
> interesting enough, there is no such one.

See the Documentation directory in the kernel source matching your
kernel. There is no "one" list because things change.
>
> My question is in configuring the kernel and I enable the network
> support, will this "ip=off" turn off all network related
> functionalities?
>
> I ask this because it seems to me even with "ip=off" there, kernel is
> still trying to access the ethernet PHY on the chip.

--
bill davidsen
SBC/Prodigy Yorktown Heights NY data center
http://newsgroups.news.prodigy.com

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what exactly does "ip=off" do?