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

[Matthias Weißer]

Hello Heiko

>> images which was not possible due to boot time restrictions in older
>> versions. So it would be great if this stuff could go mainline.
>
> I hope so ;-) So, could you send a patch for this board, based on my
> RFC patches? I pick them up at first, and it will then go in mainline
> when it is time for this step ...

As my board is not mainlined (still waiting for any review on V5) this 
doesn't make sense from my point of view.

> (And it would be nice if you could send some testsresults, how "faster"
> let your boot time ;-)

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.

Matthias