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 Jančo 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@lists.denx.de http://lists.denx.de/mailman/listinfo/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).