meta-rpi4b-dev Yocto Layer

Description

This is an application layer for the Raspberry Pi 4B which has some basic Linux Dev Utilities installed. Also, this Yocto Distro has the Real-Time Kernel Patch applied along with aptitude package management.

Dependencies

This layer depends on:

• URI: git://git.yoctoproject.org/poky
  • branch: kirkstone
  • revision: HEAD
• URI: https://github.com/agherzan/meta-raspberrypi
  • branch: kirkstone
  • revision: HEAD

Usage

This layer is meant to be used along side the official meta-raspberrypi bsp yocto layer.

Deployment to SD-CARD

Install the bmaptool to copy the generated .wic file to the SD card

sudo apt install bmap-tools 

Insert the microSD into your workstation and note where it shows up.

lsblk is convenient for finding the microSD card.

For example

user@host:~/$ lsblk

NAME    MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda       8:0    0 931.5G  0 disk
|-sda1    8:1    0  93.1G  0 part /
|-sda2    8:2    0  93.1G  0 part /home
sdb       8:16   1   7.4G  0 disk
|-sdb1    8:17   1    64M  0 part
|-sdb2    8:18   1   7.3G  0 part

Unmount the sdcard with the following command (in this example the sdcard has two partitions that are unmounted individually)

umount /dev/sdb1
umount /dev/sdb2

Change directories to the location of the yocto build image .wic and .wic.bmap file. Then run the bmaptool command as below. Note that this should be done outside of the container.

cd <path_to_yocto_build_dir>/build-pi4/tmp/deploy/images/raspberrypi4-64

sudo bmaptool copy --bmap rpi4-dev-raspberrypi4-64-20220928230009.rootfs.wic.bmap \ 
rpi4-dev-raspberrypi4-64-20220928230009.rootfs.wic /dev/sdb

Maintainer

• Eric Owusu <[email protected]>