[U-Boot] Regression in U-boot v2019-07-rcX

Andy Shevchenko andriy.shevchenko at linux.intel.com
Wed Jun 12 13:23:37 UTC 2019

On Wed, Jun 12, 2019 at 04:18:25PM +0300, Andy Shevchenko wrote:
> Hi!
> I have noticed today the regression in newer U-Boot.
> For now I'm not sure which version is affected first. At least v2019.07-rc4
> behaves badly.
> Under badly I mean the following. Consider the output at the boot time:
> U-Boot 2019.07-rc4-00012-gcea7942d57 (Jun 12 2019 - 16:08:09 +0300)
> CPU:   Intel(R) Atom(TM) CPU  U1000  @  500MHz
> DRAM:  980.6 MiB
> MMC:   mmc at ff3fc000: 0, mmc at ff3fa000: 1
> Loading Environment from MMC... OK
> In:    serial
> Out:   serial
> Err:   serial
> Net:   No ethernet found.
> Hit any key to stop autoboot:  0 
> Note lines started with DRAM: and MMC:. Now the 4 seconds (!) time is passed
> between them.
> On top of that DFU seems twice slower (on the glance, I haven't measure with
> `time` yet).
> Any ideas, while I'll try to allocate some time to investigate myself?
> P.S. The board I'm testing with is Intel Edison. I think no need to tell that
> nothing has been changed except the base (I'm rebased my stuff on top of latest
> and greatest U-Boot releases).

v2019.07-rc1 is NOT affected!

The time difference with DFU:
-rc1: real    0m1.114s
-rc4: real    0m2.691s

With Best Regards,
Andy Shevchenko

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