[U-Boot] [RFC][PATCH 00/19] arm: add full relocation / cache support

Wolfgang Denk wd at denx.de
Sat Aug 7 23:41:13 CEST 2010


Dear =?ISO-8859-1?Q?Matthias_Wei=DFer?=,

In message <4C5AAB4C.9010209 at arcor.de> you wrote:
> 
> As my board is not mainlined (still waiting for any review on V5) this 
> doesn't make sense from my point of view.

I just sent a few reviews to one of the patches. As soon as you
resubmit this patch, I'll pull the stuff into u-boot-arm and then into
mainline.

> Here are some numbers:
> 
> Test:                      old (icache)  new (i+d cache)
> image size                  191k         204k             x 1.06
> copy 32MB NOR -> RAM        7.0s         6.5s             x 1.07
> iminfo of 1.2MiB image      0.5s         0.1s             x 5.0
> bootm of 1.2MiB gz image    5.4s         0.5s             x 10.8
> bootm of 0.8MiB lzma image 17.1s         1.5s             x 11.4
> bootm of 1.6MiB lzo image   3.2s         0.2s             x 16.0
> 
> The three images have all the same payload. Just tested the three 
> different compression methods.
> 
> Boot time limit into application code is 5s so u-boot image compression 
> was not an option. But now it is.

Indeed - that's an impressive set of results. Thanks for the testing.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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