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Freescale i.MX6 Sabre SD boards
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This file documents the Buildroot support for the Freescale i.MX6 Sabre SD
boards based on i.MX6Q, i.MX6DL and iMX6QP.
Thanks to the SPL support in U-Boot it is possible to run a single
sdcard.img in all i.MX6 Sabre SD board variants.
This configuration uses U-Boot mainline and kernel mainline.
Build
=====
First, configure Buildroot for the i.MX6 Sabre SD board:
make imx6-sabresd_defconfig
Build all components:
make
You will find the following files in output/images/ :
- imx6q-sabresd.dtb
- imx6dl-sabresd.dtb
- imx6qp-sabresd.dtb
- rootfs.ext4
- rootfs.tar
- sdcard.img
- u-boot.imx
- zImage
Create a bootable SD card
=========================
To determine the device associated to the SD card have a look in the
/proc/partitions file:
cat /proc/partitions
Buildroot prepares a bootable "sdcard.img" image in the output/images/
directory, ready to be dumped on a SD card. Launch the following
command as root:
dd if=output/images/sdcard.img of=/dev/<your-sd-device>
*** WARNING! This will destroy all the card content. Use with care! ***
For details about the medium image layout, see the definition in
board/freescale/common/imx/genimage.cfg.template.
Boot the i.MX6 Sabre SD board
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To boot your newly created system:
- insert the SD card in the SD3 slot of the board (close to the HDMI connector);
- put a micro USB cable into the Debug USB Port and connect using a terminal
emulator at 115200 bps, 8n1;
- power on the board.
Testing graphics on the i.MX6 Sabre SD board
============================================
The imx6-sabresd_qt5_defconfig allows to quickly test the graphics
capabilities of i.MX6 using the opensource Etnaviv graphics stack
and kernel mainline.
In order to build it:
make imx6-sabresd_qt5_defconfig
make
Then flash the SD card as explained above.
Running kmscube application:
# kmscube
Running Qt5 Cinematic Demo:
# export QT_QPA_EGLFS_KMS_CONFIG=/root/sabresd.json
# /usr/share/Qt5/CinematicExperience/Qt5_CinematicExperience
Running gl2mark benchmark:
# glmark2-es2-drm
Enjoy!
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