Linux/AM4379: Kernel Logo

Tool/software: Linux

Hello,

I am trying to enable the kernel logo (the penguin).  After I successfully enable it, I will try to modify it.

I have a layer that looks like this...

meta-mine/

├── conf
│   └── layer.conf
├── mine-config.txt
├── recipes-core
│   ├── images
│   │   └── mine.bb
│   └── psplash
│       ├── psplash
│       │   └── psplash-poky-img.h
│       └── psplash_git.bbappend
└── recipes-kernel
    └── linux
        ├── files
        │   └── logo.cfg
        └── linux-ti-staging_%.bbappend

Inside meta-mine/mine-config.txt you can see what environment gets used for the build...

# This file takes repo entries in the format
# repo name,repo uri,repo branch,repo commit[,layers=layer1:layer2...:layern]

bitbake,git://git.openembedded.org/bitbake,1.30,HEAD,layers=
meta-arago,git://arago-project.org/git/meta-arago.git,krogoth,HEAD,layers=meta-arago-distro:meta-arago-extras
meta-qt5,git://github.com/meta-qt5/meta-qt5.git,krogoth,HEAD,layers=
meta-openembedded,git://git.openembedded.org/meta-openembedded,krogoth,HEAD,layers=meta-networking:meta-ruby:meta-python:meta-oe
meta-ti,git://git.yoctoproject.org/meta-ti,krogoth,HEAD,layers=
meta-linaro,git://git.linaro.org/openembedded/meta-linaro.git,krogoth,HEAD,layers=meta-linaro-toolchain:meta-optee
oe-core,git://git.openembedded.org/openembedded-core,krogoth,HEAD,layers=meta
meta-mine,./sources/meta-mine,master,HEAD,layers=
OECORELAYERCONF=./sample-files/bblayers.conf.sample
OECORELOCALCONF=./sample-files/local-arago64.conf.sample

Inside meta-mine/recipes-kernel/linux/linux-ti-staging_%.bbappend...

FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
SRC_URI += "file://logo.cfg"

...and inside meta-mine/recipes-kernel/linux/files/logo.cfg...

CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y

It all built fine, but when I boot it up, no kernel logo :(  

To make sure my kernel changes made it to the SD card I run this on target...

~# cat /proc/config.gz | gunzip | grep LOGO
# CONFIG_LOGO is not set

...hmm, kernel changes did not make it to target. :(

So I find an alternative, I use menuconfig to edit it...

<build_dir># MACHINE=am437x-evm bitbake linux-ti-staging -c menuconfig

I navigate to Device Drivers --> Graphics Support, scroll to the bottom and enable 'Bootup logo', save/exit, and then...

<build_dir># MACHINE=am437x-evm bitbake linux-ti-staging

<out_dir># sudo cp zImage /media/adb/rootfs/boot && sync

Then I boot it up and... no kernel logo. :(

~# cat /proc/config.gz | gunzip | grep LOGO

CONFIG_LOGO=y
CONFIG_LOGO_LINUX_MONO=y
CONFIG_LOGO_LINUX_VGA16=y
CONFIG_LOGO_LINUX_CLUT224=y

:) Well at the changes got there, even though they didn't seem to do anything.

Q1: Why didn't my customizations from logo.cfg get picked up in my layer?

Q2: Why didn't the kernel logo get displayed even with the options configured in the kernel?

Thanks,

Nathan