Re: changing kernel config in Morty build

[Greg Wilson-Lindberg <GWilson@sakuraus.com>]

Hi Bruce,
Thanks for all of your help in looking into this. I did get another response that detailed using an out of tree defconfig. They didn't know if it would work with Morty, they are using it with Sumo. I'll have to try it with Morty.
Thanks again,
Greg Wilson-Lindberg  
Principal Firmware Engineer | Sakura Finetek USA, Inc.  

> -----Original Message-----
> From: Bruce Ashfield [mailto:bruce.ashfield@windriver.com]
> Sent: Tuesday, October 09, 2018 08:16 PM
> To: Greg Wilson-Lindberg <GWilson@sakuraus.com>; yocto@yoctoproject.org
> Subject: Re: [yocto] changing kernel config in Morty build
> 
> On 2018-10-05 7:26 PM, Greg Wilson-Lindberg wrote:
> > Hi Bruce,
> > I've been able to reproduce the problem in a more minimal environment.
> >
> > To build a basic Yocto Raspberry Pi environment I based my build on the
> instructions found here:
> > https://themeaningfulengineer.github.io/exploring-yocto-with-raspberry
> > pi/
> >
> > The steps that I actually executed are:
> >
> > git clone -b morty --single-branch git://git.yoctoproject.org/poky cd
> > poky/ git clone -b morty
> > http://git.yoctoproject.org/git/meta-raspberrypi
> > source oe-init-build-env rpi-build
> >
> > In rpi-build/conf/local.conf I changed the MACHINE assignment to "raspberrypi2"
> from "qemu86"
> >
> > In rpi-build/conf/bblayers.conf I added "  /home/gwilson/Qt/poky/meta-raspberrypi
> \" to pick up the raspberry layer.
> >
> > At this point I ran:
> > bitbake rpi-hwup-image
> >
> > to verify that the environment was correct. The build finished with only a couple of
> warnings about checksum problems and using alternate mirrors.
> >
> > I then copied in my kernel scripts and added in the directory to the bblayers file.
> >
> > When I rebuilt with these changes I get the same warnings/errors about changing
> the kernel config that I get with my full build environment.
> >
> > I've attached my meta-test directory with the kernel configuration .bbappend and
> .scc & .cfg files, and the final bblayers.conf & local.conf files.
> 
> Thanks for the layers and cut & paste instructions. They helped a lot.
> 
> .. even with that start, it took me a bit to figure things out.
> 
> In the end, I can't actually figure out how to get the fragment working with the rpi
> kernel configuration routines as they stand in the morty timeframe.
> 
> in recipes-kernel/linux/linux-rpi.inc, there's a do_configure_prepend routine who's
> first action is to clear ${B}/.config .. which is where the kernel-yocto bbclass would
> have put the merged config + fragment.
> (The defconfig is also a placeholder defconfig, I could work around that, but in the
> end, it doesn't matter since that routine zeros out anything that has merged).
> 
> So as I see it, you'll either need to carry your own defconfig, patch the in-tree
> defconfig that is used, or write routines in your bbappend to modify the configuration
> directly. I admit to not looking to see if the techniques to do this are described
> anywhere, since I was just trying to sort out why the fragment wasn't being properly
> applied.
> 
> Sorry I couldn't be of more help.
> 
> Cheers,
> 
> Bruce
> 
> >
> > Thank you for taking a look at this.
> >
> > Regards,
> >
> > Greg Wilson-Lindberg
> >
> >
> >
> > ----------------------------------------------------------------------
> > --
> > *From:* yocto-bounces@yoctoproject.org
> > <yocto-bounces@yoctoproject.org> on behalf of Greg Wilson-Lindberg
> > <GWilson@sakuraus.com>
> > *Sent:* Friday, October 5, 2018 9:23:52 AM
> > *To:* Bruce Ashfield; yocto@yoctoproject.org
> > *Subject:* Re: [yocto] changing kernel config in Morty build Hi Bruce,
> > I'll do my best to get something for you.
> > Thanks,
> >
> > Greg Wilson-Lindberg
> > Principal Firmware Engineer | Sakura Finetek USA, Inc.
> >
> > 1750 W 214th Street | Torrance, CA 90501 | U.S.A.
> > T: +1 310 783 5075
> > F: +1 310 618 6902 | E: gwilson@sakuraus.com www.sakuraus.com
> > <http://www.sakuraus.com>
> >
> >
> >
> >
> >
> > Confidentiality Notice: This e-mail transmission may contain
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> > Finetek USA, Inc. can arrange for proper delivery, and then please
> > delete the message from your inbox. Thank you.
> >
> >
> >
> >> -----Original Message-----
> >> From: Bruce Ashfield [mailto:bruce.ashfield@windriver.com]
> >> Sent: Friday, October 05, 2018 08:46 AM
> >> To: Greg Wilson-Lindberg <GWilson@sakuraus.com>;
> >> yocto@yoctoproject.org
> >> Subject: Re: [yocto] changing kernel config in Morty build
> >>
> >> On 2018-10-04 4:38 PM, Greg Wilson-Lindberg wrote:
> >> > Does anybody else have any idea about what is going on here?
> >> >
> >>
> >> I can't tell from the information provided.
> >>
> >> But if you can send me a set of layers to clone, and configure
> >> locally, I can figure it out.
> >>
> >> Cheers,
> >>
> >> Bruce
> >>
> >> > Yocto is seeing my request to change the kernel config, suggests
> >> > that the change is acceptable, but then doesn't make it.
> >> >
> >> > Thanks in advance for any insight,
> >> >
> >> > Greg
> >> >
> >> > **
> >> >
> >> > *From:*Greg Wilson-Lindberg
> >> > *Sent:* Tuesday, October 02, 2018 02:22 PM
> >> > *To:* yocto@yoctoproject.org
> >> > *Subject:* changing kernel config in Morty build
> >> >
> >> > I'm trying to change some kernel configuration flags in a
> >> > raspberrypi3 Morty build and I get warnings that it isn't working.
> >> >
> >> > Here is the build info and warnings:
> >> >
> >> > Build Configuration:
> >> >
> >> > BB_VERSION        = "1.32.0"
> >> >
> >> > BUILD_SYS         = "x86_64-linux"
> >> >
> >> > NATIVELSBSTRING   = "universal"
> >> >
> >> > TARGET_SYS        = "arm-poky-linux-gnueabi"
> >> >
> >> > MACHINE           = "raspberrypi3"
> >> >
> >> > DISTRO            = "b2qt"
> >> >
> >> > DISTRO_VERSION    = "2.2.4"
> >> >
> >> > TUNE_FEATURES     = "arm armv7ve vfp thumb neon vfpv4
> >> > callconvention-hard cortexa7"
> >> >
> >> > TARGET_FPU        = "hard"
> >> >
> >> > SDKMACHINE        = "x86_64"
> >> >
> >> > meta
> >> >
> >> > meta-poky         = "HEAD:df76669bdd70aa0d903c4211dde731221c7e756d"
> >> >
> >> > meta-raspberrypi  = "HEAD:2a192261a914892019f4f428d7462bb3c585ebac"
> >> >
> >> > meta-oe
> >> >
> >> > meta-python
> >> >
> >> > meta-networking
> >> >
> >> > meta-initramfs
> >> >
> >> > meta-multimedia   = "HEAD:b40116cf457b88a2db14b86fda9627fb34d56ae6"
> >> >
> >> > meta-boot2qt
> >> >
> >> > meta-raspberrypi-extras = "<unknown>:<unknown>"
> >> >
> >> > meta-mingw        = "HEAD:1c2e155111dce94423cc227ea69f7f50f316c78e"
> >> >
> >> > meta-qt5          = "HEAD:49e9d9a73b5c6e3d6eab88dc0005305e85b1a62d"
> >> >
> >> > meta-sakura       = "<unknown>:<unknown>"
> >> >
> >> > Initialising tasks: 100%
> >> >
> >>
> |###################################################################
> >> ##
> >> >
> >>
> |###################################################################
> >> ##
> >> > |###|
> >> > Time: 0:00:00
> >> >
> >> > NOTE: Executing SetScene Tasks
> >> >
> >> > NOTE: Executing RunQueue Tasks
> >> >
> >> > WARNING: linux-raspberrypi-1_4.4.50+gitAUTOINC+04c8e47067-r0
> >> > do_kernel_configcheck: [kernel config]: specified values did not
> >> > make it into the kernel's final configuration:
> >> >
> >> > ---------- CONFIG_SND_SOC_MAX9768 -----------------
> >> >
> >> > Config: CONFIG_SND_SOC_MAX9768
> >> >
> >> > From:
> >> > /home/gwilson/Qt/Qt-5.9.6/Yocto-build-RPi3/build-raspberrypi3/tmp/w
> >> > ork
> >> > -shared/raspberrypi3/kernel-source/.kernel-meta/configs/Scribe.cfg
> >> >
> >> > Requested value:  CONFIG_SND_SOC_MAX9768=y
> >> >
> >> > Actual value:
> >> >
> >> > Config 'SND_SOC_MAX9768' has the following conditionals:
> >> >
> >> > Dependency values are:
> >> >
> >> > ---------- CONFIG_MAX1363 -----------------
> >> >
> >> > Config: CONFIG_MAX1363
> >> >
> >> > From:
> >> > /home/gwilson/Qt/Qt-5.9.6/Yocto-build-RPi3/build-raspberrypi3/tmp/w
> >> > ork
> >> > -shared/raspberrypi3/kernel-source/.kernel-meta/configs/Scribe.cfg
> >> >
> >> > Requested value:  CONFIG_MAX1363=m
> >> >
> >> > Actual value:     # CONFIG_MAX1363 is not set
> >> >
> >> > Config 'MAX1363' has the following conditionals:
> >> >
> >> >    I2C (value: "y")
> >> >
> >> > Dependency values are:
> >> >
> >> >    I2C [y]
> >> >
> >> > ---------- CONFIG_CAN_EMS_USB -----------------
> >> >
> >> > Config: CONFIG_CAN_EMS_USB
> >> >
> >> > From:
> >> > /home/gwilson/Qt/Qt-5.9.6/Yocto-build-RPi3/build-raspberrypi3/tmp/w
> >> > ork
> >> > -shared/raspberrypi3/kernel-source/.kernel-meta/configs/Scribe.cfg
> >> >
> >> > Requested value:  CONFIG_CAN_EMS_USB=m
> >> >
> >> > Actual value:     # CONFIG_CAN_EMS_USB is not set
> >> >
> >> > Config 'CAN_EMS_USB' has the following conditionals:
> >> >
> >> >    (none)
> >> >
> >> > Dependency values are:
> >> >
> >> > Here is my
> >> >
> >> > linux-raspberrypi_4.4.bbappend for the kernel:
> >> >
> >> > # Scribe additions to Kernel configuration
> >> >
> >> > FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/files:"
> >> >
> >> > FILESEXTRAPATHS_prepend := "${FILE_DIRNAME}/${PN}:"
> >> >
> >> > SRC_URI += "file://Scribe.scc <file:///%5C%5CScribe.scc>"
> >> >
> >> > SRC_URI += "file://mcp251x.c.patch <file:///%5C%5Cmcp251x.c.patch>"
> >> >
> >> > The Scribe.scc file:
> >> >
> >> > # Scribe additions to kernel configuration
> >> >
> >> > kconf hardware Scribe.cfg
> >> >
> >> > And the Scribe.cfg file:
> >> >
> >> > # Scribe additions to kernel configuration
> >> >
> >> > # Enable MAX9768
> >> >
> >> > #CONFIG_SOC_ALL_CODECS=m
> >> >
> >> > #CONFIG_COMPILE_TEST=y
> >> >
> >> > CONFIG_SND_SOC_MAX9768=y
> >> >
> >> > # Enable MAX11606
> >> >
> >> > #IIO=y
> >> >
> >> > CONFIG_MAX1363=m
> >> >
> >> > # Enable EMS CPC-USB
> >> >
> >> > CONFIG_CAN_EMS_USB=m
> >> >
> >> > Here is my directory tree:
> >> >
> >> > Qt-5.9.6
> >> >
> >> >       Yocto-mirror
> >> > # Yocto build mirror
> >> >
> >> >       Yocto-build-RPi3
> >> >#  Yocto build root
> >> >
> >> >                  build-raspberrypi
> >> >#  build directory
> >> >
> >> >                  sources
> >> >   # yocto sources
> >> >
> >> >                         meta-sakura  # our recipes
> >> >
> >> >                                 recipes-kernel  # directory for
> >> >kernel changes
> >> >
> >> >                                         linux
> >> >     # directory that contains linux-raspberrypi_4.4.bbappend
> >> >
> >> >                                                files
> >> >       # directory that contains .scc & .cfg files
> >> >
> >> > As seen above none of the changes are accepted although there is
> >> > nothing that blocks any of them.
> >> >
> >> > Any help understanding this would be greatly appreciated.
> >> >
> >> > Regards,
> >> >
> >> > Greg Wilson-Lindberg
> >> >
> >> >
> >> >
> >
> > --
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