Re: AW: Compiling glibc-2.3.2 (debian) on mpc8xx ;-)

On Tuesday 09 March 2004 10:20, you wrote:

Dear David,
sadly I have got no answer to your question, but I want to ask you
something:
Are you using U-Boot for starting Linux?
If you do, can you give me a short roadmap, how to port to new
board?

Yes, we are using u-boot.
Well, here's a list of suggestions based on what we did:
1.- Read the README of u-boot.
2.- Assuming there are already other boards with the same CPU and at least a
more or less similar setup that are supported, pick one of them, and copy the
directory boards/xxxx to boards/yyyy (where yyyy is the name of your board).
3.- Go to include/configs and make a copy of the xxxx.h file. Don't forget to
add your board also to the Makefile.
4.- Watch out for special stuff for the board you are using as start, it could
get in your way.
5.- Check if the xxxx's config and board support files are indeed a good
starting point (clean documented sources, using the newest format of config
files and most important, get to fully understand the source).
6.- Look at several other examples to pick up ideas and learn from the
sources.
7.- Configure your board with the design information, and from what you
learned reading README and the examples.
8.- Leave SDRAM configuration for later (assuming you use a MPC8xx processor,
where SDRAM is a special issue), and look if you get something out of your
serial port first.
9.- Use Jtag or BDM interfaces to place the bootloader into flash.
(We used a homebrewed Jtag interface to program the on-board flash, although
everyone and ther brother in this list will probably say that you MUST do it
with the BDI2000 from abatron via the BDM port).
10.- Have a Scope at hand to examine the CS and address lines (if at all
possible). This may help to see what's going on before the serial port comes
into play.
11.- If you have a mpc8xx processor, read the technical notes from Micron
about how to interface SDRAM to the MPC8xx, and how to program the UPM
correctly. There's a tool from Motorola that let's you draw the waveforms on
screen and obtain the corresponding byte-code for the UPM. This might be
handy. Again look at and learn from what others did.

Good Luck!

Best regards,

--
David Jander
Protonic Holland.
tel.: +31 (0) 229 212928
fax.: +31 (0) 229 210930
Factorij 36 / 1628 AL Zwaag

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

I have a ppc 5100 that is currently running Linux. I also have downloaded
and looked at the ELDK. Neither appear to have a telnet nor a ssh daemon.
What daemon for remote access is recommended? Are there small versions
especially appropriate for embedded use? Versions that have Make files
conducive to cross-compilation for PPC?

Thanks,
Kevin Dankwardt


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

I'm using sshd (OpenSSH 3.8-p1 i believe) and sftp-server which are 394k
and 60k in size.
Their makefiles are not well adapted but if you have "Building embedded
linux systems" of O'Reilly, you'll build it without any problem

Kind regards,
Gerrit Van de Velde

Kevin P. Dankwardt wrote:

I have a ppc 5100 that is currently running Linux. I also have downloaded
and looked at the ELDK. Neither appear to have a telnet nor a ssh daemon.
What daemon for remote access is recommended? Are there small versions
especially appropriate for embedded use? Versions that have Make files
conducive to cross-compilation for PPC?

Thanks,
Kevin Dankwardt

--
Kind regards,
ing. Gerrit Van de Velde

Onderzoeksgroep Digitale Technieken
W & K, Campus De Nayer
J. De Nayerlaan 5
2860 Sint-Katelijne-Waver

Tel. 015 / 31 69 44
Fax. 015 / 31 74 53
http://emsys.denayer.wenk.be


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/