Blog from September, 2021

SECO provides an SD card image file that can be used to prepare the boot device in just one step. You can download the binary for your board from the following table:

Depending on whether your operating system is Linux or Windows the procedure is described below.

Linux

Insert the sd inside your host pc and find the device name the operating system assigned to it. In this guide we suppose the path of the device is /dev/sdX. Replace everywhere sdX with your device name.

Extract the sdcard image with the command

bzip2 -d <image-file-name>.sdcard.bz2

then unmount the device and write the image:

dd if=<image-file-name>.sdcard of=/dev/sdX bs=1M

The drive is now ready.

Windows

Use you preferred software to extract the downloaded image. We suggest to install 7zip or win-rar if you need one.

Then you can download Rufus, a tool to create bootable device, that will guide you with the creation of the image.

Now you are ready to insert the sd card inside the carrier slot and power it on, as explained here in the “How can I power on my module?” section.

INDEX

Introduction

This guideline provides instructions to setup and build Yocto Project for SECO boards only with SECO BSP9.0. The guideline is not valid using the community BSP.

Yocto Project Setup

The following example shows how to download the Freescale Yocto Project Community BSP recipe layers. Create a home directory in the root, for example, a directory called imx-yocto-bsp:

mkdir imx-yocto-bsp
cd imx-yocto-bsp
git config --global user.name "Your Name"
git config --global user.email "Your Email"

Now execute the following command to init yocto repository:

repo init -u https://git.seco.com/pub/i.mx/yocto/seco-yocto-manifest.git -m seco-imx-4.19.35-1.0.0.xml
repo sync

repo init -u https://git.seco.com/pub/i.mx/yocto/seco-yocto-manifest -b seco/release/imx_5.4.70_2.3.0 -m seco-5.4.70-2.3.0.xml
repo sync

End users may use seco-setup.sh help command -h to learn more about different possible configurations and their usage:

source seco-setup.sh -h

The output is the following:

Usage: source seco-setup.sh -m <machine> -r <ram-size> -d <distro> -b <build-dir>
Parameters: -r ram-size -d distro -b build-dir [-p download_folder] [-s sstate folder] [-t threads number] [-g]
* [-m] : Machine name, if unspecified script uses 'seco_uq7_962' as default 
* [-r] : Ram size of SECO board, if unspecified script uses '1G_4x256M' as default
* [-d] : Distro name, if unspecified script uses 'seco-imx-fb' as default
* [-b] : Build directory, if unspecified script uses 'build' as output directory
* [-g] : Sets project options via graphics wizard (requires python). With this each other arguments will be ignored
* [-h] : Prints this help and each other arguments will be ignored
* [-p] : Links the project to a different folder from the standard one, as Yocto Download folder (please see Yocto document for more info)
* [-s] : Links the project to a different folder from the standard one, as Yocto SSTATE project (please see Yocto document for more info)
* [-t] : set the number of threads used during the bitbake task (please see Yocto document for more info)
* [-u] : Configure boot device. (set UBOOT_CONFIG variable)
* [-f] : Add distro feature, like Docker support or Chromium.

Configurations:
-m [ seco-uq7-962 | seco-uq7-a75 | seco-q7-928 | seco-sbc-a62 | seco-sbc-b08 | seco-sbc-c23 | seco-imx8qxp-c57 | seco-imx8qm-c26 | seco-imx8mm-c61 | seco-imx8mq-c12 | seco-imx8mq-c20 | seco-imx8mq-c25 | seco-imx8mm-c72 | seco-imx8qm-c43 | seco-imx8mn-c72 ]
-r [ 256M_1x256M  | 512M_2x256M  | 512M_2x256M | 1G_4x256M | 1G_2x512M | 2G_4x512M ]
-d [ seco-imx-wayland | seco-imx-fb | seco-imx-x11 | seco-imx-xwayland ]
-u [ sd ]
-f [ docker,chromium ]

Once the target device configuration is selected you can prepare to build.

For i.MX6: RAM option should be named -r <ram-size>

source seco-setup.sh -m <machine> -r <ram-size> -d <distro> -b <build-dir>

For i.MX8: RAM is configured as dynamic so there’s no need to select the -r <ram-size> option , just add the -u <sd> option to recall the default configuration of the board.

source seco-setup.sh -m <machine> -u <sd> -d <distro> -b <build-dir>

The table below report supported machines and distros for BSP9 and BSP10:

Then build it using bitbake command, selecting the proper Image Name from the ones in the table below:

bitbake <Image Name> 

build sdk with:

bitbake -c populate_sdk <Image Name>

Compiled binaries will be available here:

<build folder>/tmp/deploy/images/seco-<board_name>

Once the build is complete, you can install an image in the µSD card:

<build folder>/tmp/deploy/images/<MACHINE>/seco-image-test-multimedia-<MACHINE>.wic.bz2

Extract the Image:

bunzip2 -dk -f <image_name>.wic.bz2

Copy the .wic image into the µSD card using dd command:

sudo dd if=tmp/deploy/images/<MACHINE>/<image_name>.wic of=/dev/sdX bs=1M conv=fsync