[U-Boot-Users] BDI vs. Lauterbach

[Wolfgang Denk]

Dear Andrey,

in message <1618325846.20060410201725 at varma-el.com> you wrote:
> 
> > This does not mean anything. I haven't seen a single case  where  the
> > network  speed  was  the limiting factor. Shuffeling the data through
> > the JTAG is usually much slower.
> Not always. As ex.:  allowable MPC5200 JTAG's clock is ... 25 MHz,
> clock of 10 Mbit eth is ... + tcp stack overhead. And now we run
> memory dump command and measure.

But the 25 MHz also includes a LOT of JTAG communication overhead.  I
think you won't get even close to a raw 10 Mbps data rate, but I have
to  admit  that  I  never  actually  measured  it yet. Did you really
measure this? For example,  what  difference  do  you  get  when  you
connect your Lauterbach to a 10 Mbps port vs. a 100 Mbps port?

[This is a serious question; I have never been able  to  run  such  a
test myself yet.]

> Don't asking them for a help, since my BDI work as predicted,
> so it may be pros also :).

I remember a case when somebody here on the list had the data pins of
his flash device swapped and Abatron came up with a special  firmware
that  allowed  flashing  the  devices  anyway. And just recently They
helped us to get support for a new processor (Intel Monahans) working
- without ever seeing such a chip or much of the documentation.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
I must follow the people.  Am I not their leader? - Benjamin Disraeli