[U-Boot-Users] decrease boot time

Wolfgang Denk wd at denx.de
Sat Feb 12 01:34:25 CET 2005

In message <20050211223035.GA10412 at ku-gbr.de> you wrote:
> I am trying to improve boot time of my linux system on my motorola i.MX
> system as much as possible. Therefore I tried to omit the copying and
> decompressing the linux kernel image ba using XIP, but the code runs

Are you sure that this is where you spend a significant part of  your
boot  time?  I  guess you did run some analysis on which steps of the
boot procedure take how long etc.???

> I wonder how to make use of sync burst mode with u-boot in conjunction

What makes you think that this would solve a problem?

> How do I disable serial support in u-boot? My u-boot is currently 60k
> big, in my opinion a simple bootloader which does something like
> memsetup and starting kernel afterwards should not be much bigger than
> 10k. Or is that wrong?

Your assumption may be of for "a simple bootloader", but then  U-Boot
is not such a beast.

Also, which problem do you try to solve? Boot time? Image size?

What makes you think that disabling the serial  console  would  solve
either of these problems? [If these actually are problems.]

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
There is a time in the tides of men, Which, taken at its flood, leads
on to success. On the other hand, don't count on it.   - T. K. Lawson

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