On Thursday 26 October 2017 09:27:59 Pavel Machek wrote:

Hi!

On Thu 2017-10-26 09:21:13, Pali Roh?r wrote:

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On Thursday 26 October 2017 09:08:15 Pavel Machek wrote:

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On Thu 2017-10-26 08:25:02, Filip Matijevi? wrote:

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Last time I couldn't get output on serial I used CONFIG_DEBUG_LL,
CONFIG_DEBUG_OMAP3UART3, CONFIG_EARLY_PRINTK... and ignore_loglevel
earlyprintk kernel params to get output early enough - I guess you
already tried that.

I realized I'm not getting output from the decompessor (even on "S"
machine), and enabled that.

That is because you have not enabled those EARLY PRINK or DEBUG LL.
Similar thing is needed for N900 and IIRC in some of my linux-n900
branches I have config for it. Plus it needs patching some arch/arm
source files to make it working.

Do you have a patch? That would be very useful.

Yes, in v4.9-n900 branch, see:
https://github.com/pali/linux-n900/commit/66b22ba4132ca90f7efc3f9e8ece8d4b9adddcdc

Seems like debugging in uncompressor was broken some time ago:

config DEBUG_UNCOMPRESS
        bool
		depends on ARCH_MULTIPLATFORM || PLAT_SAMSUNG ||         ARM_SINGLE_ARMV7M
	        default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && 
		                     (!DEBUG_TEGRA_UART || !ZBOOT_ROM)
        && \!DEBUG_BRCMSTB_UART
			     

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But I'm _still_ not getting any output on decompressor... early
printing works ok on "S" but not on "P".

I guess there can be either problem with memory mapping and RAM size or
with OMAP HS mode?

RAM size should be ok... how do I check for OMAP HS problems?

For problems with smc or any other it is needed to look into kernel log :-(

-- 
Pali Roh?r
pali.rohar at gmail.com