Re: AM335x EVM and core-image-sato

[Denys Dmytriyenko <denys@ti.com>]

Now I'm just wondering what PG version of the board you've got, if it fails in 
the same way with our 3.8 kernel and a known good set of 3.12 images...


On Mon, Oct 21, 2013 at 11:19:35PM +0100, Rudolf Streif wrote:
> Thanks, Denys.
> 
> Interesting point about gcc. It's version 4.8.1 which is the default for
> poky master. Which is what I used all along.
> 
> Thanks for sending your binaries. They fail too with the exact same
> problem. See attached log. I found [1] on gmane which exactly describes the
> problem I am seeing.
> 
> If that is the case then I was wondering why my earlier builds with
> 3.12-rc3 actually worked. And I tried them again and they are now failing
> too. Of course I don't know anything about the specifics of the gpio and
> the timers on the chip but it looks like a weird hardware initialization
> condition. And I don't know if the proposed patch in [1] was ever
> incorporated in your kernel tree.
> 
> I don't think it's the hardware (or at least not alone) because the SD that
> ships with it with the 3.2 kernel works just fine.
> 
> Cheers,
> Rudi
> 
> 
> [1]  http://permalink.gmane.org/gmane.linux.ports.arm.omap/96044
> 
> 
> On Mon, Oct 21, 2013 at 10:15 PM, Denys Dmytriyenko <denis@denix.org> wrote:
> 
> > Rudi,
> >
> > As we discussed earlier today, let my send you my binaries for the kernel
> > and
> > u-boot to try on your board. I just wanted to ask you about the toolchain
> > that
> > you used to build yours. In our builds we use Linaro gcc-4.7 hardfp
> > toolchain
> > and I vaguely remember hearing about some problems with the recent gcc-4.8
> > toolchain from oe-core... I'm wondering if you are having the same issue.
> >
> > --
> > Denys
> >
> >
> > On Mon, Oct 21, 2013 at 10:42:35AM -0700, Rudolf Streif wrote:
> > > Since the 3.12-rc5 kernel does not work I decided to give the 3.8 kernel
> > a
> > > try. The issue with this one is that the linux-ti-staging_3.8.bb recipe
> > > explicitly sets KERNEL_IMAGETYPE="uImage". However, the u-boot
> > environment
> > > has now moved on to using zImage which consequently means u-boot will not
> > > find the kernel file.
> > >
> > > I do not know why KERNEL_IMAGETYPE = "uImage" was hacked into the
> > > linux-ti-staging_3.8.bb recipe but whoever did it did not think about
> > > u-boot. Does zImage not work with 3.8? I did not try it but it should
> > > normally have no effect. Since there is no dependency of the u-boot
> > recipes
> > > on the kernel image types changes to the kernel image type for newer
> > > versions of the kernel then automatically means that it must be changed
> > for
> > > the previous versions too.
> > >
> > > I mocked around with the u-boot environment and booted the 3.8 uImage
> > > kernel. To my surprise the 3.8 kernel from the TI staging repository
> > fails
> > > with the exact same problem and stops booting with a kernel not syncing
> > > message during the init calls. Apparently a patch must have been applied
> > to
> > > the kernel repo that breaks it. It has nothing possibly to do with the
> > > build system.
> > >
> > > I would appreciate any hints to get this kernel built and boot on the
> > board.
> > >
> > > Thanks,
> > > Rudi
> > >
> > >
> > > On Mon, Oct 21, 2013 at 1:16 AM, Rudolf Streif
> > > <rstreif@linuxfoundation.org>wrote:
> > >
> > > > Denys,
> > > >
> > > > I recompiled the 3.12-rc5 kernel again but it still stalls during
> > > > initialization. I attached the boot log. I don't know much about the
> > > > platform details but maybe that's an issue you know about.
> > > >
> > > > Thanks,
> > > > Rudi
> > > >
> > > >
> > > >
> > > >>
> > > >> [1]
> > > >> Build Configuration:
> > > >> BB_VERSION        = "1.21.0"
> > > >> BUILD_SYS         = "x86_64-linux"
> > > >> NATIVELSBSTRING   = "Fedora-18"
> > > >> TARGET_SYS        = "arm-poky-linux-gnueabi"
> > > >> MACHINE           = "am335x-evm"
> > > >> DISTRO            = "poky"
> > > >> DISTRO_VERSION    = "1.5+snapshot-20131019"
> > > >> TUNE_FEATURES     = "armv7a vfp neon"
> > > >> TARGET_FPU        = "vfp-neon"
> > > >> meta-yocto        = "master:9a1dce10bdc9254bb38e0e54199f23ae55e209a4"
> > > >> meta-ti           = "master:c11504664990f007c3903d349e7cc135a904f8e2"
> > > >> meta-oe           = "master:f8903f53db717294d63a8d79b5ef7ca34b3c189e"
> > > >> meta              = "master:9a1dce10bdc9254bb38e0e54199f23ae55e209a4"
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >
> > > --
> > > --
> > > *Rudolf J. Streif*
> > > Director of Embedded Solutions
> > > The Linux Foundation
> > >
> > > rudolf.streif@linux.com
> > > Phone: +1.619.537.6646
> > > Skype: rudolfstreif
> > > PGP: RSA 2048/2048 D6E7D28B
> > >
> > > Linux Foundation Events Schedule:  events.linuxfoundation.org
> > > Linux Foundation Training Schedule: training.linuxfoundation.org
> >
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> >
> >
> 
> 
> -- 
> -- 
> *Rudolf J. Streif*
> Director of Embedded Solutions
> The Linux Foundation
> 
> rudolf.streif@linux.com
> Phone: +1.619.537.6646
> Skype: rudolfstreif
> PGP: RSA 2048/2048 D6E7D28B
> 
> Linux Foundation Events Schedule:  events.linuxfoundation.org
> Linux Foundation Training Schedule: training.linuxfoundation.org