[U-Boot] Faster boot time

Wolfgang Denk wd at denx.de
Mon Sep 26 19:56:47 CEST 2011


Dear Dat Tran,

In message <CAMCSx6YwUFRTzpkOjKSbfDTk5_x4_HraSy_Naq2oy0+DpfR-GA at mail.gmail.com> you wrote:
>
> Also running the latest X-Loader 1.50 and U-Boot 2011.09-rc1, it takes about
> 2 seconds from power on to starting the Linux Kernel. My Kernel takes 1
> second to load and my file system takes another 1.5 seconds for a total of
> 4.5 seconds from power on to the login prompt on serial. I assume the
> U-Boot-SPL will only speed up the first half of my boot time. If so, how
> much of a difference do you think I will see with this patch.

It may speed up more than just the first half, because, if done right,
you will have the caches enabled in the new setup, which may speed up
NAND loading by a factor of 10 or more...


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
Two wrongs don't make a right, but three rights make a left.


More information about the U-Boot mailing list