From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Date: Wed, 12 Jun 2019 16:49:01 +0300 Subject: [U-Boot] Regression in U-boot v2019-07-rcX In-Reply-To: <20190612132337.GM9224@smile.fi.intel.com> References: <20190612131825.GL9224@smile.fi.intel.com> <20190612132337.GM9224@smile.fi.intel.com> Message-ID: <20190612134901.GN9224@smile.fi.intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wed, Jun 12, 2019 at 04:23:37PM +0300, Andy Shevchenko wrote: > 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 The culprit commit is: commit 665cb18ea64aabbeb03d27a4c92ddec1baccb87a Author: Simon Glass Date: Thu Apr 25 21:59:06 2019 -0600 x86: Don't set up MTRRs in SPL Please revert ASAP before release, thanks! -- With Best Regards, Andy Shevchenko