On Wed, Jun 12, 2019 at 9:49 PM Andy Shevchenko <andriy.shevche...@linux.intel.com> wrote: > > 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@ff3fc000: 0, mmc@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 <s...@chromium.org> > Date: Thu Apr 25 21:59:06 2019 -0600 > > x86: Don't set up MTRRs in SPL > > > Please revert ASAP before release, thanks!
So it looks that MTRRs are not programmed for Intel Edison to enable cache? Simon, would you please take a look? I suspect simply revert this will break the Chromebook SPL build? Regards, Bin _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
