SD Monolitic image build and flashing steps for BPI R4.

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Build instructions for SD image for BPIR4

repo init -u https://code.rdkcentral.com/r/manifests -b kirkstone -m rdkb-bpi-extsrc.xml
repo sync -j `nproc` --no-clone-bundle --no-tags
MACHINE=bananapi4-rdk-broadband source meta-cmf-bananapi/setup-environment-refboard-rdkb
#After giving machine command select the option based of your flashing mode.
# Option 1 to generate sdcard image.


jenkins@build-yocto-persistent-rdkm-hkumar343:~/jenkinsroot/workspace/Heam/BPIR4_SD$ MACHINE=bananapi4-rdk-broadband source meta-cmf-bananapi/setup-environment-refboard-rdkb
You had no conf/local.conf file. This configuration file has therefore been
created for you from /home/jenkins/jenkinsroot/workspace/Heam/BPIR4_SD/meta-rdk/conf/local.conf.sample
You may wish to edit it to, for example, select a different MACHINE (target
hardware). See conf/local.conf for more information as common configuration
options are commented.

You had no conf/bblayers.conf file. This configuration file has therefore been
created for you from /home/jenkins/jenkinsroot/workspace/Heam/BPIR4_SD/meta-rdk/conf/bblayers.conf.sample
To add additional metadata layers into your configuration please add entries
to conf/bblayers.conf.

The Yocto Project has extensive documentation about OE including a reference
manual which can be found at:
    https://docs.yoctoproject.org

For more information about OpenEmbedded see the website:
    https://www.openembedded.org/

Common targets are:
    core-image-minimal
    rdk-oss-image
    rdk-generic-hybrid-image
    rdk-generic-mediaclient-image
    rdk-generic-broadband-image
    rdk-generic-camera-image
    rdk-generic-broadband-tdk-image
    rdk-generic-broadband-dev-image
    rdk-generic-hybrid-dev-image
    rdk-generic-mediaclient-dev-image

You can also run generated qemu images with a command like 'runqemu qemuarm'

Configuration files have been created for the following configuration:

 DISTRO: rdkb
 MACHINE: bananapi4-rdk-broadband

Manifest Name = rdkb-bpi-extsrc.xml
kirkstone tune-cortexa53.inc
kirkstone whitelist.inc
#########################################################
### Which Format image you want to generate for BPIR4 ###
#########################################################
1) SD
2) EMMC
3) NOR
Choose image format(1-SD, 2-EMMC, 3-NOR): 1

bitbake rdk-generic-broadband-image

Image generating steps for BPIR4
-Execute script in build folder to generate final image.

Flashing Steps of BPIR4 image to sdcard.

-Image can be flashed to sdcard using dd command and balenaEtcher.