RFC arm: add full relocation / cache support
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Cover letter [U-Boot] [RFC][PATCH 00/19] arm: add full relocation / cache support
Hello Heiko
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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.
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(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