[U-Boot-Users] How to use tftp to book kernel image and mount remote root fs

[Steven Woody]

On Tue, May 13, 2008 at 2:07 PM, Wolfgang Denk <wd at denx.de> wrote:
> Dear Steven,
>
> in message <ed4892840805121852t46d4c4d0rd52a9eb129121f7b at mail.gmail.com> you wrote:
>>
>> Q1:
>>
>> Both 5.9.5.1 (
http://www.denx.de/wiki/view/DULG/UBootCmdGroupDownload#Section_5.9.5.1.
>> ) and 5.9.5.6 (
>> http://www.denx.de/wiki/view/DULG/UBootCmdGroupDownload#Section_5.9.5.6.
>> ) talk about booting image via network, but there are only few lines
>> of description about these commands.  I don't know which one I should
>> use, tftpboot or bootp? And, for each one, what's the requirement on
>
> That depends on what you want to do. Do you understand the differecne
> between TFTP and BOOTP (resp. DHCP) protocols?

I understand tftp and bootp as a function of current DHCP, but I don't
know how tftp and bootp is related.  Would you suggest me something to
read? Thank you.

>
>> server side?  I've done works described in 4.6, 4.7, 4.8 to setup the
>> server, but I don't sure which one ( tftp, dhcp, nfs ) will really be
>> used.
>
> You can use any of these, depending on what you want to do.
>
> If in doubt, just follow the detailed instructions in section
> "7.  Booting Embedded Linux".

Okay, I will re-read section 7 and 9 and go back here if still have
questions.  So much thank you for your help.


>
>> Q2:
>>
>> in 9.6.3 ( Root File System on a cramfs File System ), the manual
>> taught how to make a root filesystem image (cramfs), but in the
>> installation ISO, i dont find necessary files rootfs.tar.gz and
>> devices.tar.gz mentioned in the instructions.  Where should I get
>
> Please re-read section "9.6. Root File System: Design and  Building";
> it contains a detailed step-by-step instruction.
>
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
> Too many people are ready to carry the stool when the piano needs  to
> be moved.
>



-- 
woody

then sun rose thinly from the sea and the old man could see the other
boats, low on the water and well in toward the shore, spread out
across the current.