* [U-Boot] Disable tftp and access
@ 2015-01-20 19:09 Jakub Jančo
2015-01-21 7:11 ` Albert ARIBAUD
0 siblings, 1 reply; 5+ messages in thread
From: Jakub Jančo @ 2015-01-20 19:09 UTC (permalink / raw)
To: u-boot
Hello,
I want to disable uboot tftp on my device and if uboot allow some
login/access(eg. by console) then disable it too.
My aim is to lock uboot except booting image(OS), I want manage it only
from OS(changing env variables only from OS)
I want to ask what env variables I should change to disable tftp functions
and access?
Thanks,
Kubco
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] Disable tftp and access
2015-01-20 19:09 [U-Boot] Disable tftp and access Jakub Jančo
@ 2015-01-21 7:11 ` Albert ARIBAUD
2015-01-23 17:41 ` Jakub Jančo
0 siblings, 1 reply; 5+ messages in thread
From: Albert ARIBAUD @ 2015-01-21 7:11 UTC (permalink / raw)
To: u-boot
Hello Jakub,
On Tue, 20 Jan 2015 20:09:21 +0100, Jakub Jan?o <kubco2@gmail.com>
wrote:
> Hello,
>
> I want to disable uboot tftp on my device and if uboot allow some
> login/access(eg. by console) then disable it too.
>
> My aim is to lock uboot except booting image(OS), I want manage it only
> from OS(changing env variables only from OS)
>
> I want to ask what env variables I should change to disable tftp functions
> and access?
Basically, you should look into the bootdelay and stdin variables.
> Thanks,
> Kubco
Amicalement,
--
Albert.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] Disable tftp and access
2015-01-21 7:11 ` Albert ARIBAUD
@ 2015-01-23 17:41 ` Jakub Jančo
2015-01-31 17:00 ` Jakub Jančo
0 siblings, 1 reply; 5+ messages in thread
From: Jakub Jančo @ 2015-01-23 17:41 UTC (permalink / raw)
To: u-boot
Thanks for answer,
according to http://www.denx.de/wiki/view/DULG/UBootEnvVariables
if I set bootdelay=0, then will not be possible to tftp image by dhcp or by
push?
I can't find information about possible options for stdin.
Thanks.
--
S pozdravom Jakub Janco
2015-01-21 8:11 GMT+01:00 Albert ARIBAUD <albert.u.boot@aribaud.net>:
> Hello Jakub,
>
> On Tue, 20 Jan 2015 20:09:21 +0100, Jakub Jan?o <kubco2@gmail.com>
> wrote:
> > Hello,
> >
> > I want to disable uboot tftp on my device and if uboot allow some
> > login/access(eg. by console) then disable it too.
> >
> > My aim is to lock uboot except booting image(OS), I want manage it only
> > from OS(changing env variables only from OS)
> >
> > I want to ask what env variables I should change to disable tftp
> functions
> > and access?
>
> Basically, you should look into the bootdelay and stdin variables.
>
> > Thanks,
> > Kubco
>
> Amicalement,
> --
> Albert.
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] Disable tftp and access
2015-01-23 17:41 ` Jakub Jančo
@ 2015-01-31 17:00 ` Jakub Jančo
2015-01-31 22:04 ` Nable
0 siblings, 1 reply; 5+ messages in thread
From: Jakub Jančo @ 2015-01-31 17:00 UTC (permalink / raw)
To: u-boot
Hello,
can someone help me disable serial access to uboot?
--
S pozdravom Jakub Janco
2015-01-23 18:41 GMT+01:00 Jakub Jan?o <kubco2@gmail.com>:
> Thanks for answer,
>
> according to http://www.denx.de/wiki/view/DULG/UBootEnvVariables
> if I set bootdelay=0, then will not be possible to tftp image by dhcp or
> by push?
>
> I can't find information about possible options for stdin.
>
> Thanks.
>
>
>
> --
> S pozdravom Jakub Janco
>
> 2015-01-21 8:11 GMT+01:00 Albert ARIBAUD <albert.u.boot@aribaud.net>:
>
>> Hello Jakub,
>>
>> On Tue, 20 Jan 2015 20:09:21 +0100, Jakub Jan?o <kubco2@gmail.com>
>> wrote:
>> > Hello,
>> >
>> > I want to disable uboot tftp on my device and if uboot allow some
>> > login/access(eg. by console) then disable it too.
>> >
>> > My aim is to lock uboot except booting image(OS), I want manage it only
>> > from OS(changing env variables only from OS)
>> >
>> > I want to ask what env variables I should change to disable tftp
>> functions
>> > and access?
>>
>> Basically, you should look into the bootdelay and stdin variables.
>>
>> > Thanks,
>> > Kubco
>>
>> Amicalement,
>> --
>> Albert.
>> _______________________________________________
>> U-Boot mailing list
>> U-Boot at lists.denx.de
>> http://lists.denx.de/mailman/listinfo/u-boot
>>
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* [U-Boot] Disable tftp and access
2015-01-31 17:00 ` Jakub Jančo
@ 2015-01-31 22:04 ` Nable
0 siblings, 0 replies; 5+ messages in thread
From: Nable @ 2015-01-31 22:04 UTC (permalink / raw)
To: u-boot
Hi!
I haven't tested this approach, but you can define the following variables
in your board config (see include/configs/mimc200.h for example):
#define CONFIG_SILENT_CONSOLE /* enable silent startup */
#define CONFIG_DISABLE_CONSOLE /* disable console */
#define CONFIG_SYS_DEVICE_NULLDEV /* include nulldev device */
Then you can set "stdin=nulldev\0" in your environment. I hope it helps.
I should also mention that if you are going to sell devices and want to
completely disable access to the firmware/software, then you should also
somehow disable debug ports (such as JTAG).
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2015-01-31 22:04 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2015-01-20 19:09 [U-Boot] Disable tftp and access Jakub Jančo
2015-01-21 7:11 ` Albert ARIBAUD
2015-01-23 17:41 ` Jakub Jančo
2015-01-31 17:00 ` Jakub Jančo
2015-01-31 22:04 ` Nable
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